Release v1.13.0

Stop getting users if we reach 2000 users. Slack will rate-limit us
even if we follow their limits.
This means that we now have to lookup every user that says a message
for the first time. This should be less intensive on the API.

This also disables partly fb713ed91b for now.
ChannelMembers will not be filled.

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,36 @@
+<!-- This is a bug report template. By following the instructions below and
+filling out the sections with your information, you will help the us to get all
+the necessary data to fix your issue.
+
+You can also preview your report before submitting it.
+
+Text between <!-- and --​> marks will be invisible in the report.
+-->
+
+<!-- If you have a configuration problem, please first try to create a basic configuration following the instructions on [the wiki](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) before filing an issue. -->
+
+
+### Environment
+<!-- run `matterbridge -version` -->
+<!-- If you're having problems with mattermost also specify the mattermost version. -->
+Version:
+
+<!-- What operating system are you using ? (be as specific as possible) -->
+Operating system:
+
+<!-- If you compiled matterbridge yourself:
+       * Specify the output of `go version` 
+       * Specify the output of `git rev-parse HEAD` -->
+
+### Please describe the expected behavior.
+
+
+### Please describe the actual behavior. 
+<!-- Use logs from running `matterbridge -debug` if possible. -->
+
+
+### Any steps to reproduce the behavior?
+
+
+### Please add your configuration file 
+<!-- (be sure to exclude or anonymize private data (tokens/passwords)) -->

.github/ISSUE_TEMPLATE/Bug_report.md

@@ -0,0 +1,26 @@
+---
+name: Bug report
+about: Create a report to help us improve. (Check the FAQ on the wiki first)
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior:
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots/debug logs**
+If applicable, add screenshots to help explain your problem.
+Use logs from running `matterbridge -debug` if possible.
+
+**Environment (please complete the following information):**
+ - OS: [e.g. linux]
+ - Matterbridge version: output of  `matterbridge -version`
+ - If self compiled: output of `git rev-parse HEAD`
+
+**Additional context**
+Please add your configuration file  (be sure to exclude or anonymize private data (tokens/passwords))

.github/ISSUE_TEMPLATE/Feature_request.md

@@ -0,0 +1,17 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.golangci.yaml

@@ -0,0 +1,213 @@
+# For full documentation of the configuration options please
+# see: https://github.com/golangci/golangci-lint#config-file.
+
+# options for analysis running
+run:
+  # default concurrency is the available CPU number
+  # concurrency: 4
+
+  # timeout for analysis, e.g. 30s, 5m, default is 1m
+  deadline: 1m
+
+  # exit code when at least one issue was found, default is 1
+  issues-exit-code: 1
+
+  # include test files or not, default is true
+  tests: true
+
+  # list of build tags, all linters use it. Default is empty list.
+  build-tags:
+
+  # which dirs to skip: they won't be analyzed;
+  # can use regexp here: generated.*, regexp is applied on full path;
+  # default value is empty list, but next dirs are always skipped independently
+  # from this option's value:
+  #   	vendor$, third_party$, testdata$, examples$, Godeps$, builtin$
+  skip-dirs:
+
+  # which files to skip: they will be analyzed, but issues from them
+  # won't be reported. Default value is empty list, but there is
+  # no need to include all autogenerated files, we confidently recognize
+  # autogenerated files. If it's not please let us know.
+  skip-files:
+
+
+# output configuration options
+output:
+  # colored-line-number|line-number|json|tab|checkstyle, default is "colored-line-number"
+  format: colored-line-number
+
+  # print lines of code with issue, default is true
+  print-issued-lines: true
+
+  # print linter name in the end of issue text, default is true
+  print-linter-name: true
+
+
+# all available settings of specific linters, we can set an option for
+# a given linter even if we deactivate that same linter at runtime
+linters-settings:
+  errcheck:
+    # report about not checking of errors in type assertions: `a := b.(MyStruct)`;
+    # default is false: such cases aren't reported by default.
+    check-type-assertions: false
+
+    # report about assignment of errors to blank identifier: `num, _ := strconv.Atoi(numStr)`;
+    # default is false: such cases aren't reported by default.
+    check-blank: false
+  govet:
+    # report about shadowed variables
+    check-shadowing: true
+  golint:
+    # minimal confidence for issues, default is 0.8
+    min-confidence: 0.8
+  gofmt:
+    # simplify code: gofmt with `-s` option, true by default
+    simplify: true
+  goimports:
+    # put imports beginning with prefix after 3rd-party packages;
+    # it's a comma-separated list of prefixes
+    local-prefixes: github.com
+  gocyclo:
+    # minimal code complexity to report, 30 by default (but we recommend 10-20)
+    min-complexity: 15
+  maligned:
+    # print struct with more effective memory layout or not, false by default
+    suggest-new: true
+  dupl:
+    # tokens count to trigger issue, 150 by default
+    threshold: 150
+  goconst:
+    # minimal length of string constant, 3 by default
+    min-len: 3
+    # minimal occurrences count to trigger, 3 by default
+    min-occurrences: 3
+  depguard:
+    list-type: blacklist
+    include-go-root: false
+    packages:
+    # List of packages that we would want to blacklist for... reasons.
+  misspell:
+    # Correct spellings using locale preferences for US or UK.
+    # Default is to use a neutral variety of English.
+    # Setting locale to US will correct the British spelling of 'colour' to 'color'.
+    locale: US
+  lll:
+    # max line length, lines longer will be reported. Default is 120.
+    # '\t' is counted as 1 character by default, and can be changed with the tab-width option
+    line-length: 150
+    # tab width in spaces. Default to 1.
+    tab-width: 1
+  unused:
+    # treat code as a program (not a library) and report unused exported identifiers; default is false.
+    # XXX: if you enable this setting, unused will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find funcs usages. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  unparam:
+    # call graph construction algorithm (cha, rta). In general, use cha for libraries,
+    # and rta for programs with main packages. Default is cha.
+    algo: rta
+
+    # Inspect exported functions, default is false. Set to true if no external program/library imports your code.
+    # XXX: if you enable this setting, unparam will report a lot of false-positives in text editors:
+    # if it's called for subdir of a project it can't find external interfaces. All text editor integrations
+    # with golangci-lint call it on a directory with the changed file.
+    check-exported: false
+  nakedret:
+    # make an issue if func has more lines of code than this setting and it has naked returns; default is 30
+    max-func-lines: 0 # Warn on all naked returns.
+  prealloc:
+    # XXX: we don't recommend using this linter before doing performance profiling.
+    # For most programs usage of prealloc will be a premature optimization.
+
+    # Report preallocation suggestions only on simple loops that have no returns/breaks/continues/gotos in them.
+    # True by default.
+    simple: true
+    range-loops: true # Report preallocation suggestions on range loops, true by default
+    for-loops: false # Report preallocation suggestions on for loops, false by default
+  gocritic:
+    # which checks should be enabled; can't be combined with 'disabled-checks';
+    # default are: [appendAssign assignOp caseOrder dupArg dupBranchBody dupCase flagDeref
+    # ifElseChain regexpMust singleCaseSwitch sloppyLen switchTrue typeSwitchVar underef
+    # unlambda unslice rangeValCopy defaultCaseOrder];
+    # all checks list: https://github.com/go-critic/checkers
+    enabled-checks:
+      - appendAssign
+      - assignOp
+      - boolExprSimplify
+      - builtinShadow
+      - captLocal
+      - caseOrder
+      - commentedOutImport
+      - defaultCaseOrder
+      - dupArg
+      - dupBranchBody
+      - dupCase
+      - dupSubExpr
+      - elseif
+      - emptyFallthrough
+      - hugeParam
+      - ifElseChain
+      - importShadow
+      - indexAlloc
+      - methodExprCall
+      - nestingReduce
+      - offBy1
+      - ptrToRefParam
+      - regexpMust
+      - singleCaseSwitch
+      - sloppyLen
+      - sloppyReassign
+      - switchTrue
+      - typeSwitchVar
+      - typeUnparen
+      - underef
+      - unlambda
+      - unnecessaryBlock
+      - unslice
+      - valSwap
+      - wrapperFunc
+      - yodaStyleExpr
+
+
+# linters that we should / shouldn't run
+linters:
+  enable-all: true
+  disable:
+    - gochecknoglobals
+    - lll
+    - maligned
+    - prealloc
+
+
+# rules to deal with reported isues
+issues:
+  # List of regexps of issue texts to exclude, empty list by default.
+  # But independently from this option we use default exclude patterns,
+  # it can be disabled by `exclude-use-default: false`. To list all
+  # excluded by default patterns execute `golangci-lint run --help`
+  exclude:
+
+  # Independently from option `exclude` we use default exclude patterns,
+  # it can be disabled by this option. To list all
+  # excluded by default patterns execute `golangci-lint run --help`.
+  # Default value for this option is true.
+  exclude-use-default: true
+
+  # Maximum issues count per one linter. Set to 0 to disable. Default is 50.
+  max-per-linter: 0
+
+  # Maximum count of issues with the same text. Set to 0 to disable. Default is 3.
+  max-same-issues: 0
+
+  # Show only new issues: if there are unstaged changes or untracked files,
+  # only those changes are analyzed, else only changes in HEAD~ are analyzed.
+  # It's a super-useful option for integration of golangci-lint into existing
+  # large codebase. It's not practical to fix all existing issues at the moment
+  # of integration: much better don't allow issues in new code.
+  # Default is false.
+  new: false
+
+  # Show only new issues created after git revision `REV`
+  new-from-rev: "HEAD~1"

.travis.yml

@@ -0,0 +1,57 @@
+language: go
+go:
+    - 1.11.x
+go_import_path: github.com/42wim/matterbridge
+
+# we have everything vendored
+install: true
+
+git:
+  depth: 200
+
+env:
+  global:
+    - GOOS=linux GOARCH=amd64
+    - GOLANGCI_VERSION="v1.12.3"
+
+matrix:
+  # It's ok if our code fails on unstable development versions of Go.
+  allow_failures:
+    - go: tip
+  # Don't wait for tip tests to finish. Mark the test run green if the
+  # tests pass on the stable versions of Go.
+  fast_finish: true
+
+notifications:
+      email: false
+
+before_script:
+  # Get version info from tags.
+  - MY_VERSION="$(git describe --tags)"
+  # Retrieve the golangci-lint linter binary.
+  - curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | bash -s -- -b ${GOPATH}/bin ${GOLANGCI_VERSION}
+  # Retrieve and prepare CodeClimate's test coverage reporter.
+  - curl -L https://codeclimate.com/downloads/test-reporter/test-reporter-latest-linux-amd64 > ./cc-test-reporter
+  - chmod +x ./cc-test-reporter
+  - ./cc-test-reporter before-build
+
+script:
+  # Run the linter.
+  - golangci-lint run
+  # Run all the tests with the race detector and generate coverage.
+  - go test -v -race -coverprofile c.out ./...
+  # Run the build script to generate the necessary binaries and images.
+  - /bin/bash ci/bintray.sh
+
+after_script:
+  # Upload test coverage to CodeClimate.
+  - ./cc-test-reporter after-build --exit-code ${TRAVIS_TEST_RESULT}
+
+deploy:
+  provider: bintray
+  edge:
+    branch: v1.8.47
+  file: ci/deploy.json
+  user: 42wim
+  key:
+     secure: "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"

Dockerfile

@@ -6,6 +6,6 @@ RUN apk update && apk add go git gcc musl-dev ca-certificates \
         && cd /go/src/github.com/42wim/matterbridge \
         && export GOPATH=/go \
         && go get \
-        && go build -o /bin/matterbridge \
+        && go build -x -ldflags "-X main.githash=$(git log --pretty=format:'%h' -n 1)" -o /bin/matterbridge \
         && rm -rf /go \
         && apk del --purge git go gcc musl-dev

README.md

@@ -1,43 +1,108 @@
+<div align="center">
+
 # matterbridge
 
-Simple bridge between mattermost, IRC, XMPP and Gitter
+![Matterbridge Logo](img/matterbridge-notext.gif)<br />
+   **A simple chat bridge**<br />
+   Letting people be where they want to be.<br />
+   <sub>Bridges between a growing number of protocols. Click below to demo.</sub>
 
-* Relays public channel messages between mattermost, IRC, XMPP and Gitter. Pick and mix.
-* Supports multiple channels.
-* Matterbridge -plus also works with private groups on your mattermost.
+   <sup>
 
-Look at [matterbridge.conf.sample] (https://github.com/42wim/matterbridge/blob/master/matterbridge.conf.sample) for documentation and an example.
+   [Gitter][mb-gitter] |
+   [IRC][mb-irc] |
+      [Discord][mb-discord] |
+      [Matrix][mb-matrix] |
+      [Slack][mb-slack] |
+      [Mattermost][mb-mattermost] |
+      [XMPP][mb-xmpp] |
+      [Twitch][mb-twitch] |
+      [Zulip][mb-zulip] |
+      And more...
+   </sup>
 
-## Changelog
-Since v0.6.1 support for XMPP, Gitter and Slack is added. More details in [changelog.md] (https://github.com/42wim/matterbridge/blob/master/changelog.md)
+----
+[![Download stable](https://img.shields.io/github/release/42wim/matterbridge.svg?label=download%20stable)](https://github.com/42wim/matterbridge/releases/latest)
+   [![Download dev](https://img.shields.io/bintray/v/42wim/nightly/Matterbridge.svg?label=download%20dev&colorB=007ec6)](https://bintray.com/42wim/nightly/Matterbridge/_latestVersion)
+   [![Maintainability](https://api.codeclimate.com/v1/badges/82dff70ef2ba85a6173a/maintainability)](https://codeclimate.com/github/42wim/matterbridge/maintainability)
+   [![Test Coverage](https://api.codeclimate.com/v1/badges/82dff70ef2ba85a6173a/test_coverage)](https://codeclimate.com/github/42wim/matterbridge/test_coverage)<br />
+  <hr />
+</div>
+<div align="right"><sup>
 
-## Requirements:
+**Note:** Matter<em>most</em> isn't required to run matter<em>bridge</em>.</sup></div>
+
+### Table of Contents
+ * [Features](https://github.com/42wim/matterbridge/wiki/Features)
+   * [API](#API)
+ * [Requirements](#requirements)
+ * [Screenshots](https://github.com/42wim/matterbridge/wiki/)
+ * [Installing](#installing)
+   * [Binaries](#binaries)
+   * [Building](#building)
+ * [Configuration](#configuration)
+   * [Howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config)
+   * [Examples](#examples)
+ * [Running](#running)
+   * [Docker](#docker)
+ * [Changelog](#changelog)
+ * [FAQ](#faq)
+ * [Related projects](#related-projects)
+ * [Articles](#articles)
+ * [Thanks](#thanks)
+
+## Features
+* [Support bridging between any protocols](https://github.com/42wim/matterbridge/wiki/Features#support-bridging-between-any-protocols)
+* [Support multiple gateways(bridges) for your protocols](https://github.com/42wim/matterbridge/wiki/Features#support-multiple-gatewaysbridges-for-your-protocols)
+* [Message edits and deletes](https://github.com/42wim/matterbridge/wiki/Features#message-edits-and-deletes)
+* Preserves threading when possible
+* [Attachment / files handling](https://github.com/42wim/matterbridge/wiki/Features#attachment--files-handling)
+* [Username and avatar spoofing](https://github.com/42wim/matterbridge/wiki/Features#username-and-avatar-spoofing)
+* [Private groups](https://github.com/42wim/matterbridge/wiki/Features#private-groups)
+* [API](https://github.com/42wim/matterbridge/wiki/Features#api)
+
+### API
+The API is very basic at the moment.   
+More info and examples on the [wiki](https://github.com/42wim/matterbridge/wiki/Api).
+
+Used by at least 3 projects. Feel free to make a PR to add your project to this list.
+
+* [MatterLink](https://github.com/elytra/MatterLink) (Matterbridge link for Minecraft Server chat)
+* [pyCord](https://github.com/NikkyAI/pyCord) (crossplatform chatbot)
+* [Mattereddit](https://github.com/bonehurtingjuice/mattereddit) (Reddit chat support)
+
+## Requirements
 Accounts to one of the supported bridges
-* [Mattermost] (https://github.com/mattermost/platform/)
-* [IRC] (http://www.mirc.com/servers.html)
-* [XMPP] (https://jabber.org)
-* [Gitter] (https://gitter.im)
+* [Mattermost](https://github.com/mattermost/mattermost-server/) 4.x, 5.x
+* [IRC](http://www.mirc.com/servers.html)
+* [XMPP](https://xmpp.org)
+* [Gitter](https://gitter.im)
+* [Slack](https://slack.com)
+* [Discord](https://discordapp.com)
+* [Telegram](https://telegram.org)
+* [Hipchat](https://www.hipchat.com)
+* [Rocket.chat](https://rocket.chat)
+* [Matrix](https://matrix.org)
+* [Steam](https://store.steampowered.com/)
+* [Twitch](https://twitch.tv)
+* [Ssh-chat](https://github.com/shazow/ssh-chat)
+* [Zulip](https://zulipchat.com)
 
-## binaries
-Binaries can be found [here] (https://github.com/42wim/matterbridge/releases/)
-* For use with mattermost 3.3.0+ [v0.6.1](https://github.com/42wim/matterircd/releases/tag/v0.6.1)
-* For use with mattermost 3.0.0-3.2.0 [v0.5.0](https://github.com/42wim/matterircd/releases/tag/v0.5.0)
+## Screenshots
+See https://github.com/42wim/matterbridge/wiki
 
-## Compatibility
-### Mattermost 
-* Matterbridge v0.6.1 works with mattermost 3.3.0 and higher [3.3.0 release](https://github.com/mattermost/platform/releases/tag/v3.3.0)
-* Matterbridge v0.5.0 works with mattermost 3.0.0 - 3.2.0 [3.2.0 release](https://github.com/mattermost/platform/releases/tag/v3.2.0)
+## Installing
+### Binaries
+* Latest stable release [v1.12.2](https://github.com/42wim/matterbridge/releases/latest)
+* Development releases (follows master) can be downloaded [here](https://dl.bintray.com/42wim/nightly/)
 
+### Packages
+* [Overview](https://repology.org/metapackage/matterbridge/versions)
 
-#### Webhooks version
-* Configured incoming/outgoing [webhooks](https://www.mattermost.org/webhooks/) on your mattermost instance.
+### Building
+Go 1.8+ is required. Make sure you have [Go](https://golang.org/doc/install) properly installed, including setting up your [GOPATH](https://golang.org/doc/code.html#GOPATH).
 
-#### Plus (API) version
-* A dedicated user(bot) on your mattermost instance.
-
-
-## building
-Go 1.6+ is required. Make sure you have [Go](https://golang.org/doc/install) properly installed, including setting up your [GOPATH] (https://golang.org/doc/code.html#GOPATH)
+After Go is setup, download matterbridge to your $GOPATH directory.
 
 ```
 cd $GOPATH
@@ -51,56 +116,149 @@ $ ls bin/
 matterbridge
 ```
 
-## running
-1) Copy the matterbridge.conf.sample to matterbridge.conf in the same directory as the matterbridge binary.  
-2) Edit matterbridge.conf with the settings for your environment. See below for more config information.  
-3) Now you can run matterbridge. 
+## Configuration
+### Basic configuration
+See [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
+
+### Advanced configuration
+* [matterbridge.toml.sample](https://github.com/42wim/matterbridge/blob/master/matterbridge.toml.sample) for documentation and an example.
+
+### Examples
+#### Bridge mattermost (off-topic) - irc (#testing)
+```toml
+[irc]
+    [irc.freenode]
+    Server="irc.freenode.net:6667"
+    Nick="yourbotname"
+
+[mattermost]
+    [mattermost.work]
+    Server="yourmattermostserver.tld"
+    Team="yourteam"
+    Login="yourlogin"
+    Password="yourpass"
+    PrefixMessagesWithNick=true
+    RemoteNickFormat="[{PROTOCOL}] <{NICK}> "
+
+[[gateway]]
+name="mygateway"
+enable=true
+    [[gateway.inout]]
+    account="irc.freenode"
+    channel="#testing"
+
+    [[gateway.inout]]
+    account="mattermost.work"
+    channel="off-topic"
+```
+
+#### Bridge slack (#general) - discord (general)
+```toml
+[slack]
+[slack.test]
+Token="yourslacktoken"
+PrefixMessagesWithNick=true
+
+[discord]
+[discord.test]
+Token="yourdiscordtoken"
+Server="yourdiscordservername"
+
+[general]
+RemoteNickFormat="[{PROTOCOL}/{BRIDGE}] <{NICK}> "
+
+[[gateway]]
+    name = "mygateway"
+    enable=true
+
+    [[gateway.inout]]
+    account = "discord.test"
+    channel="general"
+
+    [[gateway.inout]]
+    account ="slack.test"
+    channel = "general"
+```
+
+## Running
+
+See [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
 
 ```
 Usage of ./matterbridge:
   -conf string
-        config file (default "matterbridge.conf")
+        config file (default "matterbridge.toml")
   -debug
         enable debug
-  -plus
-        running using API instead of webhooks (deprecated, set Plus flag in [general] config)
+  -gops
+        enable gops agent
   -version
         show version
 ```
 
-## config
-### matterbridge
-matterbridge looks for matterbridge.conf in current directory. (use -conf to specify another file)
+### Docker
+Create your matterbridge.toml file locally eg in `/tmp/matterbridge.toml`
+```
+docker run -ti -v /tmp/matterbridge.toml:/matterbridge.toml 42wim/matterbridge
+```
 
-Look at [matterbridge.conf.sample] (https://github.com/42wim/matterbridge/blob/master/matterbridge.conf.sample) for an example.
-
-### mattermost
-#### webhooks version
-You'll have to configure the incoming and outgoing webhooks. 
-
-* incoming webhooks
-Go to "account settings" - integrations - "incoming webhooks".  
-Choose a channel at "Add a new incoming webhook", this will create a webhook URL right below.  
-This URL should be set in the matterbridge.conf in the [mattermost] section (see above)  
-
-* outgoing webhooks
-Go to "account settings" - integrations - "outgoing webhooks".  
-Choose a channel (the same as the one from incoming webhooks) and fill in the address and port of the server matterbridge will run on.  
-
-e.g. http://192.168.1.1:9999 (192.168.1.1:9999 is the BindAddress specified in [mattermost] section of matterbridge.conf)
-
-#### plus version
-You'll have to create a new dedicated user on your mattermost instance.
-Specify the login and password in [mattermost] section of matterbridge.conf
+## Changelog
+See [changelog.md](https://github.com/42wim/matterbridge/blob/master/changelog.md)
 
 ## FAQ
-Please look at [matterbridge.conf.sample] (https://github.com/42wim/matterbridge/blob/master/matterbridge.conf.sample) for more information first. 
-### Mattermost doesn't show the IRC nicks
-If you're running the webhooks version, this can be fixed by either:
-* enabling "override usernames". See [mattermost documentation](http://docs.mattermost.com/developer/webhooks-incoming.html#enabling-incoming-webhooks)
-* setting ```PrefixMessagesWithNick``` to ```true``` in ```mattermost``` section of your matterbridge.conf.
 
-If you're running the plus version you'll need to:
-* setting ```PrefixMessagesWithNick``` to ```true``` in ```mattermost``` section of your matterbridge.conf.
+See [FAQ](https://github.com/42wim/matterbridge/wiki/FAQ)
 
-Also look at the ```RemoteNickFormat``` setting.
+Want to tip ?
+* eth: 0xb3f9b5387c66ad6be892bcb7bbc67862f3abc16f
+* btc: 1N7cKHj5SfqBHBzDJ6kad4BzeqUBBS2zhs
+
+## Related projects
+* [FOSSRIT/infrastructure - roles/matterbridge](https://github.com/FOSSRIT/infrastructure/tree/master/roles/matterbridge) (Ansible role used to automate deployments of Matterbridge)
+* [matterbridge autoconfig](https://github.com/patcon/matterbridge-autoconfig)
+* [matterbridge config viewer](https://github.com/patcon/matterbridge-heroku-viewer)
+* [matterbridge-heroku](https://github.com/cadecairos/matterbridge-heroku)
+* [mattereddit](https://github.com/bonehurtingjuice/mattereddit)
+* [matterlink](https://github.com/elytra/MatterLink)
+* [mattermost-plugin](https://github.com/matterbridge/mattermost-plugin) - Run matterbridge as a plugin in mattermost
+* [pyCord](https://github.com/NikkyAI/pyCord) (crossplatform chatbot)
+
+## Articles
+* [matterbridge on kubernetes](https://medium.freecodecamp.org/using-kubernetes-to-deploy-a-chat-gateway-or-when-technology-works-like-its-supposed-to-a169a8cd69a3)
+* https://mattermost.com/blog/connect-irc-to-mattermost/
+* https://blog.valvin.fr/2016/09/17/mattermost-et-un-channel-irc-cest-possible/
+* https://blog.brightscout.com/top-10-mattermost-integrations/
+* http://bencey.co.nz/2018/09/17/bridge/
+* https://www.algoo.fr/blog/2018/01/19/recouvrez-votre-liberte-en-quittant-slack-pour-un-mattermost-auto-heberge/
+* https://kopano.com/blog/matterbridge-bridging-mattermost-chat/
+* https://www.stitcher.com/s/?eid=52382713
+
+## Thanks
+[![Digitalocean](https://snag.gy/3LVifX.jpg)](https://www.digitalocean.com/) for sponsoring demo/testing droplets.
+
+Matterbridge wouldn't exist without these libraries:
+* discord - https://github.com/bwmarrin/discordgo
+* echo - https://github.com/labstack/echo
+* gitter - https://github.com/sromku/go-gitter
+* gops - https://github.com/google/gops
+* gozulipbot - https://github.com/ifo/gozulipbot
+* irc - https://github.com/lrstanley/girc
+* mattermost - https://github.com/mattermost/mattermost-server
+* matrix - https://github.com/matrix-org/gomatrix
+* slack - https://github.com/nlopes/slack
+* steam - https://github.com/Philipp15b/go-steam
+* telegram - https://github.com/go-telegram-bot-api/telegram-bot-api
+* xmpp - https://github.com/mattn/go-xmpp
+* zulip - https://github.com/ifo/gozulipbot
+
+<!-- Links -->
+
+   [mb-gitter]: https://gitter.im/42wim/matterbridge
+   [mb-irc]: https://webchat.freenode.net/?channels=matterbridgechat
+   [mb-discord]: https://discord.gg/AkKPtrQ
+   [mb-matrix]: https://riot.im/app/#/room/#matterbridge:matrix.org
+   [mb-slack]: https://join.slack.com/matterbridgechat/shared_invite/MjEwODMxNjU1NDMwLTE0OTk2MTU3NTMtMzZkZmRiNDZhOA
+   [mb-mattermost]: https://framateam.org/signup_user_complete/?id=tfqm33ggop8x3qgu4boeieta6e
+   [mb-xmpp]: https://inverse.chat/
+   [mb-twitch]: https://www.twitch.tv/matterbridge
+   [mb-zulip]: https://matterbridge.zulipchat.com/register/

bridge/api/api.go

@@ -0,0 +1,136 @@
+package api
+
+import (
+	"encoding/json"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/labstack/echo"
+	"github.com/labstack/echo/middleware"
+	"github.com/zfjagann/golang-ring"
+)
+
+type API struct {
+	Messages ring.Ring
+	sync.RWMutex
+	*bridge.Config
+}
+
+type Message struct {
+	Text     string `json:"text"`
+	Username string `json:"username"`
+	UserID   string `json:"userid"`
+	Avatar   string `json:"avatar"`
+	Gateway  string `json:"gateway"`
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &API{Config: cfg}
+	e := echo.New()
+	e.HideBanner = true
+	e.HidePort = true
+	b.Messages = ring.Ring{}
+	if b.GetInt("Buffer") != 0 {
+		b.Messages.SetCapacity(b.GetInt("Buffer"))
+	}
+	if b.GetString("Token") != "" {
+		e.Use(middleware.KeyAuth(func(key string, c echo.Context) (bool, error) {
+			return key == b.GetString("Token"), nil
+		}))
+	}
+	e.GET("/api/health", b.handleHealthcheck)
+	e.GET("/api/messages", b.handleMessages)
+	e.GET("/api/stream", b.handleStream)
+	e.POST("/api/message", b.handlePostMessage)
+	go func() {
+		if b.GetString("BindAddress") == "" {
+			b.Log.Fatalf("No BindAddress configured.")
+		}
+		b.Log.Infof("Listening on %s", b.GetString("BindAddress"))
+		b.Log.Fatal(e.Start(b.GetString("BindAddress")))
+	}()
+	return b
+}
+
+func (b *API) Connect() error {
+	return nil
+}
+func (b *API) Disconnect() error {
+	return nil
+
+}
+func (b *API) JoinChannel(channel config.ChannelInfo) error {
+	return nil
+
+}
+
+func (b *API) Send(msg config.Message) (string, error) {
+	b.Lock()
+	defer b.Unlock()
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+	b.Messages.Enqueue(&msg)
+	return "", nil
+}
+
+func (b *API) handleHealthcheck(c echo.Context) error {
+	return c.String(http.StatusOK, "OK")
+}
+
+func (b *API) handlePostMessage(c echo.Context) error {
+	message := config.Message{}
+	if err := c.Bind(&message); err != nil {
+		return err
+	}
+	// these values are fixed
+	message.Channel = "api"
+	message.Protocol = "api"
+	message.Account = b.Account
+	message.ID = ""
+	message.Timestamp = time.Now()
+	b.Log.Debugf("Sending message from %s on %s to gateway", message.Username, "api")
+	b.Remote <- message
+	return c.JSON(http.StatusOK, message)
+}
+
+func (b *API) handleMessages(c echo.Context) error {
+	b.Lock()
+	defer b.Unlock()
+	c.JSONPretty(http.StatusOK, b.Messages.Values(), " ")
+	b.Messages = ring.Ring{}
+	return nil
+}
+
+func (b *API) handleStream(c echo.Context) error {
+	c.Response().Header().Set(echo.HeaderContentType, echo.MIMEApplicationJSON)
+	c.Response().WriteHeader(http.StatusOK)
+	greet := config.Message{
+		Event:     config.EventAPIConnected,
+		Timestamp: time.Now(),
+	}
+	if err := json.NewEncoder(c.Response()).Encode(greet); err != nil {
+		return err
+	}
+	c.Response().Flush()
+	closeNotifier := c.Response().CloseNotify()
+	for {
+		select {
+		case <-closeNotifier:
+			return nil
+		default:
+			msg := b.Messages.Dequeue()
+			if msg != nil {
+				if err := json.NewEncoder(c.Response()).Encode(msg); err != nil {
+					return err
+				}
+				c.Response().Flush()
+			}
+			time.Sleep(200 * time.Millisecond)
+		}
+	}
+}

bridge/bridge.go

@@ -1,151 +1,121 @@
 package bridge
 
 import (
-	//"fmt"
-	"github.com/42wim/matterbridge/bridge/config"
-	"github.com/42wim/matterbridge/bridge/gitter"
-	"github.com/42wim/matterbridge/bridge/irc"
-	"github.com/42wim/matterbridge/bridge/mattermost"
-	"github.com/42wim/matterbridge/bridge/slack"
-	"github.com/42wim/matterbridge/bridge/xmpp"
-	log "github.com/Sirupsen/logrus"
 	"strings"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/sirupsen/logrus"
+	"sync"
 )
 
-type Bridge struct {
-	*config.Config
-	Source      string
-	Bridges     []Bridger
-	Channels    []map[string]string
-	ignoreNicks map[string][]string
-}
-
 type Bridger interface {
-	Send(msg config.Message) error
-	Name() string
+	Send(msg config.Message) (string, error)
 	Connect() error
-	//Command(cmd string) string
+	JoinChannel(channel config.ChannelInfo) error
+	Disconnect() error
 }
 
-func NewBridge(cfg *config.Config) error {
-	c := make(chan config.Message)
-	b := &Bridge{}
-	b.Config = cfg
-	if cfg.IRC.Enable {
-		b.Bridges = append(b.Bridges, birc.New(cfg, c))
-	}
-	if cfg.Mattermost.Enable {
-		b.Bridges = append(b.Bridges, bmattermost.New(cfg, c))
-	}
-	if cfg.Xmpp.Enable {
-		b.Bridges = append(b.Bridges, bxmpp.New(cfg, c))
-	}
-	if cfg.Gitter.Enable {
-		b.Bridges = append(b.Bridges, bgitter.New(cfg, c))
-	}
-	if cfg.Slack.Enable {
-		b.Bridges = append(b.Bridges, bslack.New(cfg, c))
-	}
-	if len(b.Bridges) < 2 {
-		log.Fatalf("only %d sections enabled. Need at least 2 sections enabled (eg [IRC] and [mattermost]", len(b.Bridges))
-	}
-	for _, br := range b.Bridges {
-		br.Connect()
-	}
-	b.mapChannels()
-	b.mapIgnores()
-	b.handleReceive(c)
-	return nil
+type Bridge struct {
+	Bridger
+	Name           string
+	Account        string
+	Protocol       string
+	Channels       map[string]config.ChannelInfo
+	Joined         map[string]bool
+	ChannelMembers *config.ChannelMembers
+	Log            *logrus.Entry
+	Config         config.Config
+	General        *config.Protocol
+	*sync.RWMutex
 }
 
-func (b *Bridge) handleReceive(c chan config.Message) {
-	for {
-		select {
-		case msg := <-c:
-			for _, br := range b.Bridges {
-				b.handleMessage(msg, br)
+type Config struct {
+	//	General *config.Protocol
+	Remote chan config.Message
+	Log    *logrus.Entry
+	*Bridge
+}
+
+// Factory is the factory function to create a bridge
+type Factory func(*Config) Bridger
+
+func New(bridge *config.Bridge) *Bridge {
+	b := &Bridge{
+		Channels: make(map[string]config.ChannelInfo),
+		RWMutex:  new(sync.RWMutex),
+		Joined:   make(map[string]bool),
+	}
+	accInfo := strings.Split(bridge.Account, ".")
+	protocol := accInfo[0]
+	name := accInfo[1]
+	b.Name = name
+	b.Protocol = protocol
+	b.Account = bridge.Account
+	return b
+}
+
+func (b *Bridge) JoinChannels() error {
+	err := b.joinChannels(b.Channels, b.Joined)
+	return err
+}
+
+// SetChannelMembers sets the newMembers to the bridge ChannelMembers
+func (b *Bridge) SetChannelMembers(newMembers *config.ChannelMembers) {
+	b.Lock()
+	b.ChannelMembers = newMembers
+	b.Unlock()
+}
+
+func (b *Bridge) joinChannels(channels map[string]config.ChannelInfo, exists map[string]bool) error {
+	for ID, channel := range channels {
+		if !exists[ID] {
+			b.Log.Infof("%s: joining %s (ID: %s)", b.Account, channel.Name, ID)
+			err := b.JoinChannel(channel)
+			if err != nil {
+				return err
 			}
+			exists[ID] = true
 		}
 	}
-}
-
-func (b *Bridge) mapChannels() error {
-	for _, val := range b.Config.Channel {
-		m := make(map[string]string)
-		m["irc"] = val.IRC
-		m["mattermost"] = val.Mattermost
-		m["xmpp"] = val.Xmpp
-		m["gitter"] = val.Gitter
-		m["slack"] = val.Slack
-		b.Channels = append(b.Channels, m)
-	}
 	return nil
 }
 
-func (b *Bridge) mapIgnores() {
-	m := make(map[string][]string)
-	m["irc"] = strings.Fields(b.Config.IRC.IgnoreNicks)
-	m["mattermost"] = strings.Fields(b.Config.Mattermost.IgnoreNicks)
-	m["xmpp"] = strings.Fields(b.Config.Xmpp.IgnoreNicks)
-	m["gitter"] = strings.Fields(b.Config.Gitter.IgnoreNicks)
-	m["slack"] = strings.Fields(b.Config.Slack.IgnoreNicks)
-	b.ignoreNicks = m
+func (b *Bridge) GetBool(key string) bool {
+	val, ok := b.Config.GetBool(b.Account + "." + key)
+	if !ok {
+		val, _ = b.Config.GetBool("general." + key)
+	}
+	return val
 }
 
-func (b *Bridge) getDestChannel(msg *config.Message, dest string) string {
-	for _, v := range b.Channels {
-		if v[msg.Origin] == msg.Channel {
-			return v[dest]
-		}
+func (b *Bridge) GetInt(key string) int {
+	val, ok := b.Config.GetInt(b.Account + "." + key)
+	if !ok {
+		val, _ = b.Config.GetInt("general." + key)
 	}
-	return ""
+	return val
 }
 
-func (b *Bridge) handleMessage(msg config.Message, dest Bridger) {
-	if b.ignoreMessage(&msg) {
-		return
-	}
-	if dest.Name() != msg.Origin {
-		msg.Channel = b.getDestChannel(&msg, dest.Name())
-		if msg.Channel == "" {
-			return
-		}
-		b.modifyMessage(&msg, dest.Name())
-		log.Debugf("sending %#v from %s to %s", msg, msg.Origin, dest.Name())
-		dest.Send(msg)
+func (b *Bridge) GetString(key string) string {
+	val, ok := b.Config.GetString(b.Account + "." + key)
+	if !ok {
+		val, _ = b.Config.GetString("general." + key)
 	}
+	return val
 }
 
-func (b *Bridge) ignoreMessage(msg *config.Message) bool {
-	// should we discard messages ?
-	for _, entry := range b.ignoreNicks[msg.Origin] {
-		if msg.Username == entry {
-			return true
-		}
+func (b *Bridge) GetStringSlice(key string) []string {
+	val, ok := b.Config.GetStringSlice(b.Account + "." + key)
+	if !ok {
+		val, _ = b.Config.GetStringSlice("general." + key)
 	}
-	return false
+	return val
 }
 
-func setNickFormat(msg *config.Message, format string) {
-	if format == "" {
-		msg.Username = msg.Origin + "-" + msg.Username + ": "
-		return
-	}
-	msg.Username = strings.Replace(format, "{NICK}", msg.Username, -1)
-	msg.Username = strings.Replace(msg.Username, "{BRIDGE}", msg.Origin, -1)
-}
-
-func (b *Bridge) modifyMessage(msg *config.Message, dest string) {
-	switch dest {
-	case "irc":
-		setNickFormat(msg, b.Config.IRC.RemoteNickFormat)
-	case "gitter":
-		setNickFormat(msg, b.Config.Gitter.RemoteNickFormat)
-	case "xmpp":
-		setNickFormat(msg, b.Config.Xmpp.RemoteNickFormat)
-	case "mattermost":
-		setNickFormat(msg, b.Config.Mattermost.RemoteNickFormat)
-	case "slack":
-		setNickFormat(msg, b.Config.Slack.RemoteNickFormat)
+func (b *Bridge) GetStringSlice2D(key string) [][]string {
+	val, ok := b.Config.GetStringSlice2D(b.Account + "." + key)
+	if !ok {
+		val, _ = b.Config.GetStringSlice2D("general." + key)
 	}
+	return val
 }

bridge/config/config.go

@@ -1,107 +1,362 @@
 package config
 
 import (
-	"gopkg.in/gcfg.v1"
+	"bytes"
 	"io/ioutil"
-	"log"
+	"strings"
+	"sync"
+	"time"
+
+	"github.com/fsnotify/fsnotify"
+	prefixed "github.com/matterbridge/logrus-prefixed-formatter"
+	"github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
+)
+
+const (
+	EventJoinLeave         = "join_leave"
+	EventTopicChange       = "topic_change"
+	EventFailure           = "failure"
+	EventFileFailureSize   = "file_failure_size"
+	EventAvatarDownload    = "avatar_download"
+	EventRejoinChannels    = "rejoin_channels"
+	EventUserAction        = "user_action"
+	EventMsgDelete         = "msg_delete"
+	EventAPIConnected      = "api_connected"
+	EventUserTyping        = "user_typing"
+	EventGetChannelMembers = "get_channel_members"
 )
 
 type Message struct {
-	Text     string
-	Channel  string
-	Username string
-	Origin   string
+	Text      string    `json:"text"`
+	Channel   string    `json:"channel"`
+	Username  string    `json:"username"`
+	UserID    string    `json:"userid"` // userid on the bridge
+	Avatar    string    `json:"avatar"`
+	Account   string    `json:"account"`
+	Event     string    `json:"event"`
+	Protocol  string    `json:"protocol"`
+	Gateway   string    `json:"gateway"`
+	ParentID  string    `json:"parent_id"`
+	Timestamp time.Time `json:"timestamp"`
+	ID        string    `json:"id"`
+	Extra     map[string][]interface{}
 }
 
-type Config struct {
-	IRC struct {
-		UseTLS           bool
-		UseSASL          bool
-		SkipTLSVerify    bool
-		Server           string
-		Nick             string
-		Password         string
-		Channel          string
-		NickServNick     string
-		NickServPassword string
-		RemoteNickFormat string
-		IgnoreNicks      string
-		Enable           bool
+type FileInfo struct {
+	Name    string
+	Data    *[]byte
+	Comment string
+	URL     string
+	Size    int64
+	Avatar  bool
+	SHA     string
+}
+
+type ChannelInfo struct {
+	Name        string
+	Account     string
+	Direction   string
+	ID          string
+	SameChannel map[string]bool
+	Options     ChannelOptions
+}
+
+type ChannelMember struct {
+	Username    string
+	Nick        string
+	UserID      string
+	ChannelID   string
+	ChannelName string
+}
+
+type ChannelMembers []ChannelMember
+
+type Protocol struct {
+	AuthCode               string // steam
+	BindAddress            string // mattermost, slack // DEPRECATED
+	Buffer                 int    // api
+	Charset                string // irc
+	ColorNicks             bool   // only irc for now
+	Debug                  bool   // general
+	DebugLevel             int    // only for irc now
+	EditSuffix             string // mattermost, slack, discord, telegram, gitter
+	EditDisable            bool   // mattermost, slack, discord, telegram, gitter
+	IconURL                string // mattermost, slack
+	IgnoreFailureOnStart   bool   // general
+	IgnoreNicks            string // all protocols
+	IgnoreMessages         string // all protocols
+	Jid                    string // xmpp
+	Label                  string // all protocols
+	Login                  string // mattermost, matrix
+	MediaDownloadBlackList []string
+	MediaDownloadPath      string // Basically MediaServerUpload, but instead of uploading it, just write it to a file on the same server.
+	MediaDownloadSize      int    // all protocols
+	MediaServerDownload    string
+	MediaServerUpload      string
+	MessageDelay           int        // IRC, time in millisecond to wait between messages
+	MessageFormat          string     // telegram
+	MessageLength          int        // IRC, max length of a message allowed
+	MessageQueue           int        // IRC, size of message queue for flood control
+	MessageSplit           bool       // IRC, split long messages with newlines on MessageLength instead of clipping
+	Muc                    string     // xmpp
+	Name                   string     // all protocols
+	Nick                   string     // all protocols
+	NickFormatter          string     // mattermost, slack
+	NickServNick           string     // IRC
+	NickServUsername       string     // IRC
+	NickServPassword       string     // IRC
+	NicksPerRow            int        // mattermost, slack
+	NoHomeServerSuffix     bool       // matrix
+	NoSendJoinPart         bool       // all protocols
+	NoTLS                  bool       // mattermost
+	Password               string     // IRC,mattermost,XMPP,matrix
+	PrefixMessagesWithNick bool       // mattemost, slack
+	PreserveThreading      bool       // slack
+	Protocol               string     // all protocols
+	QuoteDisable           bool       // telegram
+	QuoteFormat            string     // telegram
+	RejoinDelay            int        // IRC
+	ReplaceMessages        [][]string // all protocols
+	ReplaceNicks           [][]string // all protocols
+	RemoteNickFormat       string     // all protocols
+	RunCommands            []string   // irc
+	Server                 string     // IRC,mattermost,XMPP,discord
+	ShowJoinPart           bool       // all protocols
+	ShowTopicChange        bool       // slack
+	ShowUserTyping         bool       // slack
+	ShowEmbeds             bool       // discord
+	SkipTLSVerify          bool       // IRC, mattermost
+	StripNick              bool       // all protocols
+	SyncTopic              bool       // slack
+	Team                   string     // mattermost
+	Token                  string     // gitter, slack, discord, api
+	Topic                  string     // zulip
+	URL                    string     // mattermost, slack // DEPRECATED
+	UseAPI                 bool       // mattermost, slack
+	UseSASL                bool       // IRC
+	UseTLS                 bool       // IRC
+	UseFirstName           bool       // telegram
+	UseUserName            bool       // discord
+	UseInsecureURL         bool       // telegram
+	WebhookBindAddress     string     // mattermost, slack
+	WebhookURL             string     // mattermost, slack
+}
+
+type ChannelOptions struct {
+	Key        string // irc, xmpp
+	WebhookURL string // discord
+}
+
+type Bridge struct {
+	Account     string
+	Channel     string
+	Options     ChannelOptions
+	SameChannel bool
+}
+
+type Gateway struct {
+	Name   string
+	Enable bool
+	In     []Bridge
+	Out    []Bridge
+	InOut  []Bridge
+}
+
+type SameChannelGateway struct {
+	Name     string
+	Enable   bool
+	Channels []string
+	Accounts []string
+}
+
+type BridgeValues struct {
+	API                map[string]Protocol
+	IRC                map[string]Protocol
+	Mattermost         map[string]Protocol
+	Matrix             map[string]Protocol
+	Slack              map[string]Protocol
+	SlackLegacy        map[string]Protocol
+	Steam              map[string]Protocol
+	Gitter             map[string]Protocol
+	XMPP               map[string]Protocol
+	Discord            map[string]Protocol
+	Telegram           map[string]Protocol
+	Rocketchat         map[string]Protocol
+	SSHChat            map[string]Protocol
+	Zulip              map[string]Protocol
+	General            Protocol
+	Gateway            []Gateway
+	SameChannelGateway []SameChannelGateway
+}
+
+type Config interface {
+	BridgeValues() *BridgeValues
+	GetBool(key string) (bool, bool)
+	GetInt(key string) (int, bool)
+	GetString(key string) (string, bool)
+	GetStringSlice(key string) ([]string, bool)
+	GetStringSlice2D(key string) ([][]string, bool)
+}
+
+type config struct {
+	v *viper.Viper
+	sync.RWMutex
+
+	cv *BridgeValues
+}
+
+func NewConfig(cfgfile string) Config {
+	logrus.SetFormatter(&prefixed.TextFormatter{PrefixPadding: 13, DisableColors: true, FullTimestamp: false})
+	flog := logrus.WithFields(logrus.Fields{"prefix": "config"})
+	viper.SetConfigFile(cfgfile)
+	input, err := getFileContents(cfgfile)
+	if err != nil {
+		logrus.Fatal(err)
 	}
-	Gitter struct {
-		Enable           bool
-		IgnoreNicks      string
-		Nick             string
-		RemoteNickFormat string
-		Token            string
+	mycfg := newConfigFromString(input)
+	if mycfg.cv.General.MediaDownloadSize == 0 {
+		mycfg.cv.General.MediaDownloadSize = 1000000
 	}
-	Mattermost struct {
-		URL                    string
-		ShowJoinPart           bool
-		IconURL                string
-		SkipTLSVerify          bool
-		BindAddress            string
-		Channel                string
-		PrefixMessagesWithNick bool
-		NicksPerRow            int
-		NickFormatter          string
-		Server                 string
-		Team                   string
-		Login                  string
-		Password               string
-		RemoteNickFormat       string
-		IgnoreNicks            string
-		NoTLS                  bool
-		Enable                 bool
+	viper.WatchConfig()
+	viper.OnConfigChange(func(e fsnotify.Event) {
+		flog.Println("Config file changed:", e.Name)
+	})
+	return mycfg
+}
+
+func getFileContents(filename string) ([]byte, error) {
+	input, err := ioutil.ReadFile(filename)
+	if err != nil {
+		logrus.Fatal(err)
+		return []byte(nil), err
 	}
-	Slack struct {
-		BindAddress            string
-		Enable                 bool
-		IconURL                string
-		IgnoreNicks            string
-		NickFormatter          string
-		NicksPerRow            int
-		PrefixMessagesWithNick bool
-		RemoteNickFormat       string
-		Token                  string
-		URL                    string
-		UseAPI                 bool
+	return input, nil
+}
+
+func NewConfigFromString(input []byte) Config {
+	return newConfigFromString(input)
+}
+
+func newConfigFromString(input []byte) *config {
+	viper.SetConfigType("toml")
+	viper.SetEnvPrefix("matterbridge")
+	viper.AddConfigPath(".")
+	viper.SetEnvKeyReplacer(strings.NewReplacer(".", "_", "-", "_"))
+	viper.AutomaticEnv()
+	err := viper.ReadConfig(bytes.NewBuffer(input))
+	if err != nil {
+		logrus.Fatal(err)
 	}
-	Xmpp struct {
-		IgnoreNicks      string
-		Jid              string
-		Password         string
-		Server           string
-		Muc              string
-		Nick             string
-		RemoteNickFormat string
-		Enable           bool
+
+	cfg := &BridgeValues{}
+	err = viper.Unmarshal(cfg)
+	if err != nil {
+		logrus.Fatal(err)
 	}
-	Channel map[string]*struct {
-		IRC        string
-		Mattermost string
-		Xmpp       string
-		Gitter     string
-		Slack      string
-	}
-	General struct {
-		GiphyAPIKey string
-		Xmpp        bool
-		Irc         bool
-		Mattermost  bool
-		Plus        bool
+	return &config{
+		v:  viper.GetViper(),
+		cv: cfg,
 	}
 }
 
-func NewConfig(cfgfile string) *Config {
-	var cfg Config
-	content, err := ioutil.ReadFile(cfgfile)
-	if err != nil {
-		log.Fatal(err)
-	}
-	err = gcfg.ReadStringInto(&cfg, string(content))
-	if err != nil {
-		log.Fatal("Failed to parse "+cfgfile+":", err)
-	}
-	return &cfg
+func (c *config) BridgeValues() *BridgeValues {
+	return c.cv
+}
+
+func (c *config) GetBool(key string) (bool, bool) {
+	c.RLock()
+	defer c.RUnlock()
+	//	log.Debugf("getting bool %s = %#v", key, c.v.GetBool(key))
+	return c.v.GetBool(key), c.v.IsSet(key)
+}
+
+func (c *config) GetInt(key string) (int, bool) {
+	c.RLock()
+	defer c.RUnlock()
+	//	log.Debugf("getting int %s = %d", key, c.v.GetInt(key))
+	return c.v.GetInt(key), c.v.IsSet(key)
+}
+
+func (c *config) GetString(key string) (string, bool) {
+	c.RLock()
+	defer c.RUnlock()
+	//	log.Debugf("getting String %s = %s", key, c.v.GetString(key))
+	return c.v.GetString(key), c.v.IsSet(key)
+}
+
+func (c *config) GetStringSlice(key string) ([]string, bool) {
+	c.RLock()
+	defer c.RUnlock()
+	// log.Debugf("getting StringSlice %s = %#v", key, c.v.GetStringSlice(key))
+	return c.v.GetStringSlice(key), c.v.IsSet(key)
+}
+
+func (c *config) GetStringSlice2D(key string) ([][]string, bool) {
+	c.RLock()
+	defer c.RUnlock()
+	result := [][]string{}
+	if res, ok := c.v.Get(key).([]interface{}); ok {
+		for _, entry := range res {
+			result2 := []string{}
+			for _, entry2 := range entry.([]interface{}) {
+				result2 = append(result2, entry2.(string))
+			}
+			result = append(result, result2)
+		}
+		return result, true
+	}
+	return result, false
+}
+
+func GetIconURL(msg *Message, iconURL string) string {
+	info := strings.Split(msg.Account, ".")
+	protocol := info[0]
+	name := info[1]
+	iconURL = strings.Replace(iconURL, "{NICK}", msg.Username, -1)
+	iconURL = strings.Replace(iconURL, "{BRIDGE}", name, -1)
+	iconURL = strings.Replace(iconURL, "{PROTOCOL}", protocol, -1)
+	return iconURL
+}
+
+type TestConfig struct {
+	Config
+
+	Overrides map[string]interface{}
+}
+
+func (c *TestConfig) GetBool(key string) (bool, bool) {
+	val, ok := c.Overrides[key]
+	if ok {
+		return val.(bool), true
+	}
+	return c.Config.GetBool(key)
+}
+
+func (c *TestConfig) GetInt(key string) (int, bool) {
+	if val, ok := c.Overrides[key]; ok {
+		return val.(int), true
+	}
+	return c.Config.GetInt(key)
+}
+
+func (c *TestConfig) GetString(key string) (string, bool) {
+	if val, ok := c.Overrides[key]; ok {
+		return val.(string), true
+	}
+	return c.Config.GetString(key)
+}
+
+func (c *TestConfig) GetStringSlice(key string) ([]string, bool) {
+	if val, ok := c.Overrides[key]; ok {
+		return val.([]string), true
+	}
+	return c.Config.GetStringSlice(key)
+}
+
+func (c *TestConfig) GetStringSlice2D(key string) ([][]string, bool) {
+	if val, ok := c.Overrides[key]; ok {
+		return val.([][]string), true
+	}
+	return c.Config.GetStringSlice2D(key)
 }

bridge/discord/discord.go

@@ -0,0 +1,365 @@
+package bdiscord
+
+import (
+	"bytes"
+	"errors"
+	"fmt"
+	"strings"
+	"sync"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/bwmarrin/discordgo"
+)
+
+const MessageLength = 1950
+
+type Bdiscord struct {
+	*bridge.Config
+
+	c *discordgo.Session
+
+	nick            string
+	useChannelID    bool
+	guildID         string
+	webhookID       string
+	webhookToken    string
+	canEditWebhooks bool
+
+	channelsMutex  sync.RWMutex
+	channels       []*discordgo.Channel
+	channelInfoMap map[string]*config.ChannelInfo
+
+	membersMutex  sync.RWMutex
+	userMemberMap map[string]*discordgo.Member
+	nickMemberMap map[string]*discordgo.Member
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &Bdiscord{Config: cfg}
+	b.userMemberMap = make(map[string]*discordgo.Member)
+	b.nickMemberMap = make(map[string]*discordgo.Member)
+	b.channelInfoMap = make(map[string]*config.ChannelInfo)
+	if b.GetString("WebhookURL") != "" {
+		b.Log.Debug("Configuring Discord Incoming Webhook")
+		b.webhookID, b.webhookToken = b.splitURL(b.GetString("WebhookURL"))
+	}
+	return b
+}
+
+func (b *Bdiscord) Connect() error {
+	var err error
+	var guildFound bool
+	token := b.GetString("Token")
+	b.Log.Info("Connecting")
+	if b.GetString("WebhookURL") == "" {
+		b.Log.Info("Connecting using token")
+	} else {
+		b.Log.Info("Connecting using webhookurl (for posting) and token")
+	}
+	if !strings.HasPrefix(b.GetString("Token"), "Bot ") {
+		token = "Bot " + b.GetString("Token")
+	}
+	// if we have a User token, remove the `Bot` prefix
+	if strings.HasPrefix(b.GetString("Token"), "User ") {
+		token = strings.Replace(b.GetString("Token"), "User ", "", -1)
+	}
+
+	b.c, err = discordgo.New(token)
+	if err != nil {
+		return err
+	}
+	b.Log.Info("Connection succeeded")
+	b.c.AddHandler(b.messageCreate)
+	b.c.AddHandler(b.memberUpdate)
+	b.c.AddHandler(b.messageUpdate)
+	b.c.AddHandler(b.messageDelete)
+	err = b.c.Open()
+	if err != nil {
+		return err
+	}
+	guilds, err := b.c.UserGuilds(100, "", "")
+	if err != nil {
+		return err
+	}
+	userinfo, err := b.c.User("@me")
+	if err != nil {
+		return err
+	}
+	serverName := strings.Replace(b.GetString("Server"), "ID:", "", -1)
+	b.nick = userinfo.Username
+	b.channelsMutex.Lock()
+	for _, guild := range guilds {
+		if guild.Name == serverName || guild.ID == serverName {
+			b.channels, err = b.c.GuildChannels(guild.ID)
+			b.guildID = guild.ID
+			guildFound = true
+			if err != nil {
+				break
+			}
+		}
+	}
+	b.channelsMutex.Unlock()
+	if !guildFound {
+		msg := fmt.Sprintf("Server \"%s\" not found", b.GetString("Server"))
+		err = errors.New(msg)
+		b.Log.Error(msg)
+		b.Log.Info("Possible values:")
+		for _, guild := range guilds {
+			b.Log.Infof("Server=\"%s\" # Server name", guild.Name)
+			b.Log.Infof("Server=\"%s\" # Server ID", guild.ID)
+		}
+	}
+
+	if err != nil {
+		return err
+	}
+	b.channelsMutex.RLock()
+	if b.GetString("WebhookURL") == "" {
+		for _, channel := range b.channels {
+			b.Log.Debugf("found channel %#v", channel)
+		}
+	} else {
+		b.canEditWebhooks = true
+		for _, channel := range b.channels {
+			b.Log.Debugf("found channel %#v; verifying PermissionManageWebhooks", channel)
+			perms, permsErr := b.c.State.UserChannelPermissions(userinfo.ID, channel.ID)
+			manageWebhooks := discordgo.PermissionManageWebhooks
+			if permsErr != nil || perms&manageWebhooks != manageWebhooks {
+				b.Log.Warnf("Can't manage webhooks in channel \"%s\"", channel.Name)
+				b.canEditWebhooks = false
+			}
+		}
+		if b.canEditWebhooks {
+			b.Log.Info("Can manage webhooks; will edit channel for global webhook on send")
+		} else {
+			b.Log.Warn("Can't manage webhooks; won't edit channel for global webhook on send")
+		}
+	}
+	b.channelsMutex.RUnlock()
+
+	// Obtaining guild members and initializing nickname mapping.
+	b.membersMutex.Lock()
+	defer b.membersMutex.Unlock()
+	members, err := b.c.GuildMembers(b.guildID, "", 1000)
+	if err != nil {
+		b.Log.Error("Error obtaining server members: ", err)
+		return err
+	}
+	for _, member := range members {
+		if member == nil {
+			b.Log.Warnf("Skipping missing information for a user.")
+			continue
+		}
+		b.userMemberMap[member.User.ID] = member
+		b.nickMemberMap[member.User.Username] = member
+		if member.Nick != "" {
+			b.nickMemberMap[member.Nick] = member
+		}
+	}
+	return nil
+}
+
+func (b *Bdiscord) Disconnect() error {
+	return b.c.Close()
+}
+
+func (b *Bdiscord) JoinChannel(channel config.ChannelInfo) error {
+	b.channelsMutex.Lock()
+	defer b.channelsMutex.Unlock()
+
+	b.channelInfoMap[channel.ID] = &channel
+	idcheck := strings.Split(channel.Name, "ID:")
+	if len(idcheck) > 1 {
+		b.useChannelID = true
+	}
+	return nil
+}
+
+func (b *Bdiscord) Send(msg config.Message) (string, error) {
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	channelID := b.getChannelID(msg.Channel)
+	if channelID == "" {
+		return "", fmt.Errorf("Could not find channelID for %v", msg.Channel)
+	}
+
+	// Make a action /me of the message
+	if msg.Event == config.EventUserAction {
+		msg.Text = "_" + msg.Text + "_"
+	}
+
+	// use initial webhook configured for the entire Discord account
+	isGlobalWebhook := true
+	wID := b.webhookID
+	wToken := b.webhookToken
+
+	// check if have a channel specific webhook
+	b.channelsMutex.RLock()
+	if ci, ok := b.channelInfoMap[msg.Channel+b.Account]; ok {
+		if ci.Options.WebhookURL != "" {
+			wID, wToken = b.splitURL(ci.Options.WebhookURL)
+			isGlobalWebhook = false
+		}
+	}
+	b.channelsMutex.RUnlock()
+
+	// Use webhook to send the message
+	if wID != "" {
+		// skip events
+		if msg.Event != "" && msg.Event != config.EventJoinLeave && msg.Event != config.EventTopicChange {
+			return "", nil
+		}
+		b.Log.Debugf("Broadcasting using Webhook")
+		for _, f := range msg.Extra["file"] {
+			fi := f.(config.FileInfo)
+			if fi.Comment != "" {
+				msg.Text += fi.Comment + ": "
+			}
+			if fi.URL != "" {
+				msg.Text = fi.URL
+				if fi.Comment != "" {
+					msg.Text = fi.Comment + ": " + fi.URL
+				}
+			}
+		}
+		// skip empty messages
+		if msg.Text == "" {
+			return "", nil
+		}
+
+		msg.Text = helper.ClipMessage(msg.Text, MessageLength)
+		msg.Text = b.replaceUserMentions(msg.Text)
+		// discord username must be [0..32] max
+		if len(msg.Username) > 32 {
+			msg.Username = msg.Username[0:32]
+		}
+		// if we have a global webhook for this Discord account, and permission
+		// to modify webhooks (previously verified), then set its channel to
+		// the message channel before using it
+		// TODO: this isn't necessary if the last message from this webhook was
+		// sent to the current channel
+		if isGlobalWebhook && b.canEditWebhooks {
+			b.Log.Debugf("Setting webhook channel to \"%s\"", msg.Channel)
+			_, err := b.c.WebhookEdit(wID, "", "", channelID)
+			if err != nil {
+				b.Log.Errorf("Could not set webhook channel: %v", err)
+				return "", err
+			}
+		}
+		err := b.c.WebhookExecute(
+			wID,
+			wToken,
+			true,
+			&discordgo.WebhookParams{
+				Content:   msg.Text,
+				Username:  msg.Username,
+				AvatarURL: msg.Avatar,
+			})
+		return "", err
+	}
+
+	b.Log.Debugf("Broadcasting using token (API)")
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			return "", nil
+		}
+		err := b.c.ChannelMessageDelete(channelID, msg.ID)
+		return "", err
+	}
+
+	// Upload a file if it exists
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			rmsg.Text = helper.ClipMessage(rmsg.Text, MessageLength)
+			if _, err := b.c.ChannelMessageSend(channelID, rmsg.Username+rmsg.Text); err != nil {
+				b.Log.Errorf("Could not send message %#v: %v", rmsg, err)
+			}
+		}
+		// check if we have files to upload (from slack, telegram or mattermost)
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg, channelID)
+		}
+	}
+
+	msg.Text = helper.ClipMessage(msg.Text, MessageLength)
+	msg.Text = b.replaceUserMentions(msg.Text)
+
+	// Edit message
+	if msg.ID != "" {
+		_, err := b.c.ChannelMessageEdit(channelID, msg.ID, msg.Username+msg.Text)
+		return msg.ID, err
+	}
+
+	// Post normal message
+	res, err := b.c.ChannelMessageSend(channelID, msg.Username+msg.Text)
+	if err != nil {
+		return "", err
+	}
+	return res.ID, err
+}
+
+// useWebhook returns true if we have a webhook defined somewhere
+func (b *Bdiscord) useWebhook() bool {
+	if b.GetString("WebhookURL") != "" {
+		return true
+	}
+
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+
+	for _, channel := range b.channelInfoMap {
+		if channel.Options.WebhookURL != "" {
+			return true
+		}
+	}
+	return false
+}
+
+// isWebhookID returns true if the specified id is used in a defined webhook
+func (b *Bdiscord) isWebhookID(id string) bool {
+	if b.GetString("WebhookURL") != "" {
+		wID, _ := b.splitURL(b.GetString("WebhookURL"))
+		if wID == id {
+			return true
+		}
+	}
+
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+
+	for _, channel := range b.channelInfoMap {
+		if channel.Options.WebhookURL != "" {
+			wID, _ := b.splitURL(channel.Options.WebhookURL)
+			if wID == id {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+// handleUploadFile handles native upload of files
+func (b *Bdiscord) handleUploadFile(msg *config.Message, channelID string) (string, error) {
+	var err error
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		file := discordgo.File{
+			Name:        fi.Name,
+			ContentType: "",
+			Reader:      bytes.NewReader(*fi.Data),
+		}
+		m := discordgo.MessageSend{
+			Content: msg.Username + fi.Comment,
+			Files:   []*discordgo.File{&file},
+		}
+		_, err = b.c.ChannelMessageSendComplex(channelID, &m)
+		if err != nil {
+			return "", fmt.Errorf("file upload failed: %#v", err)
+		}
+	}
+	return "", nil
+}

bridge/discord/handlers.go

@@ -0,0 +1,125 @@
+package bdiscord
+
+import (
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/bwmarrin/discordgo"
+)
+
+func (b *Bdiscord) messageDelete(s *discordgo.Session, m *discordgo.MessageDelete) { //nolint:unparam
+	rmsg := config.Message{Account: b.Account, ID: m.ID, Event: config.EventMsgDelete, Text: config.EventMsgDelete}
+	rmsg.Channel = b.getChannelName(m.ChannelID)
+	if b.useChannelID {
+		rmsg.Channel = "ID:" + m.ChannelID
+	}
+	b.Log.Debugf("<= Sending message from %s to gateway", b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+	b.Remote <- rmsg
+}
+
+func (b *Bdiscord) messageUpdate(s *discordgo.Session, m *discordgo.MessageUpdate) { //nolint:unparam
+	if b.GetBool("EditDisable") {
+		return
+	}
+	// only when message is actually edited
+	if m.Message.EditedTimestamp != "" {
+		b.Log.Debugf("Sending edit message")
+		m.Content += b.GetString("EditSuffix")
+		b.messageCreate(s, (*discordgo.MessageCreate)(m))
+	}
+}
+
+func (b *Bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) { //nolint:unparam
+	var err error
+
+	// not relay our own messages
+	if m.Author.Username == b.nick {
+		return
+	}
+	// if using webhooks, do not relay if it's ours
+	if b.useWebhook() && m.Author.Bot && b.isWebhookID(m.Author.ID) {
+		return
+	}
+
+	// add the url of the attachments to content
+	if len(m.Attachments) > 0 {
+		for _, attach := range m.Attachments {
+			m.Content = m.Content + "\n" + attach.URL
+		}
+	}
+
+	rmsg := config.Message{Account: b.Account, Avatar: "https://cdn.discordapp.com/avatars/" + m.Author.ID + "/" + m.Author.Avatar + ".jpg", UserID: m.Author.ID, ID: m.ID}
+
+	if m.Content != "" {
+		b.Log.Debugf("== Receiving event %#v", m.Message)
+		m.Message.Content = b.stripCustomoji(m.Message.Content)
+		m.Message.Content = b.replaceChannelMentions(m.Message.Content)
+		rmsg.Text, err = m.ContentWithMoreMentionsReplaced(b.c)
+		if err != nil {
+			b.Log.Errorf("ContentWithMoreMentionsReplaced failed: %s", err)
+			rmsg.Text = m.ContentWithMentionsReplaced()
+		}
+	}
+
+	// set channel name
+	rmsg.Channel = b.getChannelName(m.ChannelID)
+	if b.useChannelID {
+		rmsg.Channel = "ID:" + m.ChannelID
+	}
+
+	// set username
+	if !b.GetBool("UseUserName") {
+		rmsg.Username = b.getNick(m.Author)
+	} else {
+		rmsg.Username = m.Author.Username
+	}
+
+	// if we have embedded content add it to text
+	if b.GetBool("ShowEmbeds") && m.Message.Embeds != nil {
+		for _, embed := range m.Message.Embeds {
+			rmsg.Text = rmsg.Text + "embed: " + embed.Title + " - " + embed.Description + " - " + embed.URL + "\n"
+		}
+	}
+
+	// no empty messages
+	if rmsg.Text == "" {
+		return
+	}
+
+	// do we have a /me action
+	var ok bool
+	rmsg.Text, ok = b.replaceAction(rmsg.Text)
+	if ok {
+		rmsg.Event = config.EventUserAction
+	}
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", m.Author.Username, b.Account)
+	b.Log.Debugf("<= Message is %#v", rmsg)
+	b.Remote <- rmsg
+}
+
+func (b *Bdiscord) memberUpdate(s *discordgo.Session, m *discordgo.GuildMemberUpdate) {
+	if m.Member == nil {
+		b.Log.Warnf("Received member update with no member information: %#v", m)
+	}
+
+	b.membersMutex.Lock()
+	defer b.membersMutex.Unlock()
+
+	if currMember, ok := b.userMemberMap[m.Member.User.ID]; ok {
+		b.Log.Debugf(
+			"%s: memberupdate: user %s (nick %s) changes nick to %s",
+			b.Account,
+			m.Member.User.Username,
+			b.userMemberMap[m.Member.User.ID].Nick,
+			m.Member.Nick,
+		)
+		delete(b.nickMemberMap, currMember.User.Username)
+		delete(b.nickMemberMap, currMember.Nick)
+		delete(b.userMemberMap, m.Member.User.ID)
+	}
+	b.userMemberMap[m.Member.User.ID] = m.Member
+	b.nickMemberMap[m.Member.User.Username] = m.Member
+	if m.Member.Nick != "" {
+		b.nickMemberMap[m.Member.Nick] = m.Member
+	}
+}

bridge/discord/helpers.go

@@ -0,0 +1,189 @@
+package bdiscord
+
+import (
+	"errors"
+	"regexp"
+	"strings"
+	"unicode"
+
+	"github.com/bwmarrin/discordgo"
+)
+
+func (b *Bdiscord) getNick(user *discordgo.User) string {
+	b.membersMutex.RLock()
+	defer b.membersMutex.RUnlock()
+
+	if member, ok := b.userMemberMap[user.ID]; ok {
+		if member.Nick != "" {
+			// Only return if nick is set.
+			return member.Nick
+		}
+		// Otherwise return username.
+		return user.Username
+	}
+
+	// If we didn't find nick, search for it.
+	member, err := b.c.GuildMember(b.guildID, user.ID)
+	if err != nil {
+		b.Log.Warnf("Failed to fetch information for member %#v: %#v", user, err)
+		return user.Username
+	} else if member == nil {
+		b.Log.Warnf("Got no information for member %#v", user)
+		return user.Username
+	}
+	b.userMemberMap[user.ID] = member
+	b.nickMemberMap[member.User.Username] = member
+	if member.Nick != "" {
+		b.nickMemberMap[member.Nick] = member
+		return member.Nick
+	}
+	return user.Username
+}
+
+func (b *Bdiscord) getGuildMemberByNick(nick string) (*discordgo.Member, error) {
+	b.membersMutex.RLock()
+	defer b.membersMutex.RUnlock()
+
+	if member, ok := b.nickMemberMap[nick]; ok {
+		return member, nil
+	}
+	return nil, errors.New("Couldn't find guild member with nick " + nick) // This will most likely get ignored by the caller
+}
+
+func (b *Bdiscord) getChannelID(name string) string {
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+
+	idcheck := strings.Split(name, "ID:")
+	if len(idcheck) > 1 {
+		return idcheck[1]
+	}
+	for _, channel := range b.channels {
+		if channel.Name == name {
+			return channel.ID
+		}
+	}
+	return ""
+}
+
+func (b *Bdiscord) getChannelName(id string) string {
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+
+	for _, channel := range b.channels {
+		if channel.ID == id {
+			return channel.Name
+		}
+	}
+	return ""
+}
+
+var (
+	// See https://discordapp.com/developers/docs/reference#message-formatting.
+	channelMentionRE = regexp.MustCompile("<#[0-9]+>")
+	emojiRE          = regexp.MustCompile("<(:.*?:)[0-9]+>")
+	userMentionRE    = regexp.MustCompile("@[^@\n]{1,32}")
+)
+
+func (b *Bdiscord) replaceChannelMentions(text string) string {
+	replaceChannelMentionFunc := func(match string) string {
+		var err error
+		channelID := match[2 : len(match)-1]
+
+		channelName := b.getChannelName(channelID)
+		// If we don't have the channel refresh our list.
+		if channelName == "" {
+			b.channels, err = b.c.GuildChannels(b.guildID)
+			if err != nil {
+				return "#unknownchannel"
+			}
+			channelName = b.getChannelName(channelID)
+		}
+		return "#" + channelName
+	}
+	return channelMentionRE.ReplaceAllStringFunc(text, replaceChannelMentionFunc)
+}
+
+func (b *Bdiscord) replaceUserMentions(text string) string {
+	replaceUserMentionFunc := func(match string) string {
+		var (
+			err      error
+			member   *discordgo.Member
+			username string
+		)
+
+		usernames := enumerateUsernames(match[1:])
+		for _, username = range usernames {
+			b.Log.Debugf("Testing mention: '%s'", username)
+			member, err = b.getGuildMemberByNick(username)
+			if err == nil {
+				break
+			}
+		}
+		if member == nil {
+			return match
+		}
+		return strings.Replace(match, "@"+username, member.User.Mention(), 1)
+	}
+	return userMentionRE.ReplaceAllStringFunc(text, replaceUserMentionFunc)
+}
+
+func (b *Bdiscord) stripCustomoji(text string) string {
+	return emojiRE.ReplaceAllString(text, `$1`)
+}
+
+func (b *Bdiscord) replaceAction(text string) (string, bool) {
+	if strings.HasPrefix(text, "_") && strings.HasSuffix(text, "_") {
+		return text[1:], true
+	}
+	return text, false
+}
+
+// splitURL splits a webhookURL and returns the ID and token.
+func (b *Bdiscord) splitURL(url string) (string, string) {
+	const (
+		expectedWebhookSplitCount = 7
+		webhookIdxID              = 5
+		webhookIdxToken           = 6
+	)
+	webhookURLSplit := strings.Split(url, "/")
+	if len(webhookURLSplit) != expectedWebhookSplitCount {
+		b.Log.Fatalf("%s is no correct discord WebhookURL", url)
+	}
+	return webhookURLSplit[webhookIdxID], webhookURLSplit[webhookIdxToken]
+}
+
+func enumerateUsernames(s string) []string {
+	onlySpace := true
+	for _, r := range s {
+		if !unicode.IsSpace(r) {
+			onlySpace = false
+			break
+		}
+	}
+	if onlySpace {
+		return nil
+	}
+
+	var username, endSpace string
+	var usernames []string
+	skippingSpace := true
+	for _, r := range s {
+		if unicode.IsSpace(r) {
+			if !skippingSpace {
+				usernames = append(usernames, username)
+				skippingSpace = true
+			}
+			endSpace += string(r)
+			username += string(r)
+		} else {
+			endSpace = ""
+			username += string(r)
+			skippingSpace = false
+		}
+	}
+	if endSpace == "" {
+		usernames = append(usernames, username)
+	}
+	return usernames
+}

bridge/discord/helpers_test.go

@@ -0,0 +1,46 @@
+package bdiscord
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestEnumerateUsernames(t *testing.T) {
+	testcases := map[string]struct {
+		match             string
+		expectedUsernames []string
+	}{
+		"only space": {
+			match:             "  \t\n \t",
+			expectedUsernames: nil,
+		},
+		"single word": {
+			match:             "veni",
+			expectedUsernames: []string{"veni"},
+		},
+		"single word with preceeding space": {
+			match:             " vidi",
+			expectedUsernames: []string{" vidi"},
+		},
+		"single word with suffixed space": {
+			match:             "vici ",
+			expectedUsernames: []string{"vici"},
+		},
+		"multi-word with varying whitespace": {
+			match: "just me  and\tmy friends \t",
+			expectedUsernames: []string{
+				"just",
+				"just me",
+				"just me  and",
+				"just me  and\tmy",
+				"just me  and\tmy friends",
+			},
+		},
+	}
+
+	for testname, testcase := range testcases {
+		foundUsernames := enumerateUsernames(testcase.match)
+		assert.Equalf(t, testcase.expectedUsernames, foundUsernames, "Should have found the expected usernames for testcase %s", testname)
+	}
+}

bridge/gitter/gitter.go

@@ -1,65 +1,143 @@
 package bgitter
 
 import (
-	"github.com/42wim/matterbridge/bridge/config"
-	log "github.com/Sirupsen/logrus"
-	"github.com/sromku/go-gitter"
+	"fmt"
 	"strings"
+
+	"github.com/42wim/go-gitter"
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
 )
 
 type Bgitter struct {
-	c *gitter.Gitter
-	*config.Config
-	Remote chan config.Message
-	Rooms  []gitter.Room
+	c     *gitter.Gitter
+	User  *gitter.User
+	Users []gitter.User
+	Rooms []gitter.Room
+	*bridge.Config
 }
 
-type Message struct {
-	Text     string
-	Channel  string
-	Username string
-}
-
-var flog *log.Entry
-
-func init() {
-	flog = log.WithFields(log.Fields{"module": "gitter"})
-}
-
-func New(config *config.Config, c chan config.Message) *Bgitter {
-	b := &Bgitter{}
-	b.Config = config
-	b.Remote = c
-	return b
+func New(cfg *bridge.Config) bridge.Bridger {
+	return &Bgitter{Config: cfg}
 }
 
 func (b *Bgitter) Connect() error {
 	var err error
-	flog.Info("Trying Gitter connection")
-	b.c = gitter.New(b.Config.Gitter.Token)
-	_, err = b.c.GetUser()
+	b.Log.Info("Connecting")
+	b.c = gitter.New(b.GetString("Token"))
+	b.User, err = b.c.GetUser()
 	if err != nil {
-		flog.Debugf("%#v", err)
 		return err
 	}
-	flog.Info("Connection succeeded")
-	b.setupChannels()
-	go b.handleGitter()
+	b.Rooms, err = b.c.GetRooms()
+	if err != nil {
+		return err
+	}
+	b.Log.Info("Connection succeeded")
 	return nil
 }
 
-func (b *Bgitter) Name() string {
-	return "gitter"
+func (b *Bgitter) Disconnect() error {
+	return nil
+
 }
 
-func (b *Bgitter) Send(msg config.Message) error {
+func (b *Bgitter) JoinChannel(channel config.ChannelInfo) error {
+	roomID, err := b.c.GetRoomId(channel.Name)
+	if err != nil {
+		return fmt.Errorf("Could not find roomID for %v. Please create the room on gitter.im", channel.Name)
+	}
+	room, err := b.c.GetRoom(roomID)
+	if err != nil {
+		return err
+	}
+	b.Rooms = append(b.Rooms, *room)
+	user, err := b.c.GetUser()
+	if err != nil {
+		return err
+	}
+	_, err = b.c.JoinRoom(roomID, user.ID)
+	if err != nil {
+		return err
+	}
+	users, _ := b.c.GetUsersInRoom(roomID)
+	b.Users = append(b.Users, users...)
+	stream := b.c.Stream(roomID)
+	go b.c.Listen(stream)
+
+	go func(stream *gitter.Stream, room string) {
+		for event := range stream.Event {
+			switch ev := event.Data.(type) {
+			case *gitter.MessageReceived:
+				// ignore message sent from ourselves
+				if ev.Message.From.ID != b.User.ID {
+					b.Log.Debugf("<= Sending message from %s on %s to gateway", ev.Message.From.Username, b.Account)
+					rmsg := config.Message{Username: ev.Message.From.Username, Text: ev.Message.Text, Channel: room,
+						Account: b.Account, Avatar: b.getAvatar(ev.Message.From.Username), UserID: ev.Message.From.ID,
+						ID: ev.Message.ID}
+					if strings.HasPrefix(ev.Message.Text, "@"+ev.Message.From.Username) {
+						rmsg.Event = config.EventUserAction
+						rmsg.Text = strings.Replace(rmsg.Text, "@"+ev.Message.From.Username+" ", "", -1)
+					}
+					b.Log.Debugf("<= Message is %#v", rmsg)
+					b.Remote <- rmsg
+				}
+			case *gitter.GitterConnectionClosed:
+				b.Log.Errorf("connection with gitter closed for room %s", room)
+			}
+		}
+	}(stream, room.URI)
+	return nil
+}
+
+func (b *Bgitter) Send(msg config.Message) (string, error) {
+	b.Log.Debugf("=> Receiving %#v", msg)
 	roomID := b.getRoomID(msg.Channel)
 	if roomID == "" {
-		flog.Errorf("Could not find roomID for %v", msg.Channel)
-		return nil
+		b.Log.Errorf("Could not find roomID for %v", msg.Channel)
+		return "", nil
 	}
-	// add ZWSP because gitter echoes our own messages
-	return b.c.SendMessage(roomID, msg.Username+msg.Text+" ​")
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			return "", nil
+		}
+		// gitter has no delete message api so we edit message to ""
+		_, err := b.c.UpdateMessage(roomID, msg.ID, "")
+		if err != nil {
+			return "", err
+		}
+		return "", nil
+	}
+
+	// Upload a file (in gitter case send the upload URL because gitter has no native upload support)
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			b.c.SendMessage(roomID, rmsg.Username+rmsg.Text)
+		}
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg, roomID)
+		}
+	}
+
+	// Edit message
+	if msg.ID != "" {
+		b.Log.Debugf("updating message with id %s", msg.ID)
+		_, err := b.c.UpdateMessage(roomID, msg.ID, msg.Username+msg.Text)
+		if err != nil {
+			return "", err
+		}
+		return "", nil
+	}
+
+	// Post normal message
+	resp, err := b.c.SendMessage(roomID, msg.Username+msg.Text)
+	if err != nil {
+		return "", err
+	}
+	return resp.ID, nil
 }
 
 func (b *Bgitter) getRoomID(channel string) string {
@@ -71,40 +149,34 @@ func (b *Bgitter) getRoomID(channel string) string {
 	return ""
 }
 
-func (b *Bgitter) handleGitter() {
-	for _, val := range b.Config.Channel {
-		room := val.Gitter
-		roomID := b.getRoomID(room)
-		if roomID == "" {
-			continue
-		}
-		stream := b.c.Stream(roomID)
-		go b.c.Listen(stream)
-
-		go func(stream *gitter.Stream, room string) {
-			for {
-				event := <-stream.Event
-				switch ev := event.Data.(type) {
-				case *gitter.MessageReceived:
-					// check for ZWSP to see if it's not an echo
-					if !strings.HasSuffix(ev.Message.Text, "​") {
-						b.Remote <- config.Message{Username: ev.Message.From.Username, Text: ev.Message.Text, Channel: room, Origin: "gitter"}
-					}
-				case *gitter.GitterConnectionClosed:
-					flog.Errorf("connection with gitter closed for room %s", room)
-				}
+func (b *Bgitter) getAvatar(user string) string {
+	var avatar string
+	if b.Users != nil {
+		for _, u := range b.Users {
+			if user == u.Username {
+				return u.AvatarURLSmall
 			}
-		}(stream, room)
-	}
-}
-
-func (b *Bgitter) setupChannels() {
-	b.Rooms, _ = b.c.GetRooms()
-	for _, val := range b.Config.Channel {
-		flog.Infof("Joining %s as %s", val.Gitter, b.Gitter.Nick)
-		_, err := b.c.JoinRoom(val.Gitter)
-		if err != nil {
-			log.Errorf("Joining %s failed", val.Gitter)
 		}
 	}
+	return avatar
+}
+
+func (b *Bgitter) handleUploadFile(msg *config.Message, roomID string) (string, error) {
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		if fi.Comment != "" {
+			msg.Text += fi.Comment + ": "
+		}
+		if fi.URL != "" {
+			msg.Text = fi.URL
+			if fi.Comment != "" {
+				msg.Text = fi.Comment + ": " + fi.URL
+			}
+		}
+		_, err := b.c.SendMessage(roomID, msg.Username+msg.Text)
+		if err != nil {
+			return "", err
+		}
+	}
+	return "", nil
 }

bridge/helper/helper.go

@@ -0,0 +1,159 @@
+package helper
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strings"
+	"time"
+	"unicode/utf8"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/sirupsen/logrus"
+	"gitlab.com/golang-commonmark/markdown"
+)
+
+func DownloadFile(url string) (*[]byte, error) {
+	return DownloadFileAuth(url, "")
+}
+
+func DownloadFileAuth(url string, auth string) (*[]byte, error) {
+	var buf bytes.Buffer
+	client := &http.Client{
+		Timeout: time.Second * 5,
+	}
+	req, err := http.NewRequest("GET", url, nil)
+	if auth != "" {
+		req.Header.Add("Authorization", auth)
+	}
+	if err != nil {
+		return nil, err
+	}
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+	io.Copy(&buf, resp.Body)
+	data := buf.Bytes()
+	return &data, nil
+}
+
+// GetSubLines splits messages in newline-delimited lines. If maxLineLength is
+// specified as non-zero GetSubLines will and also clip long lines to the
+// maximum length and insert a warning marker that the line was clipped.
+//
+// TODO: The current implementation has the inconvenient that it disregards
+// word boundaries when splitting but this is hard to solve without potentially
+// breaking formatting and other stylistic effects.
+func GetSubLines(message string, maxLineLength int) []string {
+	const clippingMessage = " <clipped message>"
+
+	var lines []string
+	for _, line := range strings.Split(strings.TrimSpace(message), "\n") {
+		if maxLineLength == 0 || len([]byte(line)) <= maxLineLength {
+			lines = append(lines, line)
+			continue
+		}
+
+		// !!! WARNING !!!
+		// Before touching the splitting logic below please ensure that you PROPERLY
+		// understand how strings, runes and range loops over strings work in Go.
+		// A good place to start is to read https://blog.golang.org/strings. :-)
+		var splitStart int
+		var startOfPreviousRune int
+		for i := range line {
+			if i-splitStart > maxLineLength-len([]byte(clippingMessage)) {
+				lines = append(lines, line[splitStart:startOfPreviousRune]+clippingMessage)
+				splitStart = startOfPreviousRune
+			}
+			startOfPreviousRune = i
+		}
+		// This last append is safe to do without looking at the remaining byte-length
+		// as we assume that the byte-length of the last rune will never exceed that of
+		// the byte-length of the clipping message.
+		lines = append(lines, line[splitStart:])
+	}
+	return lines
+}
+
+// handle all the stuff we put into extra
+func HandleExtra(msg *config.Message, general *config.Protocol) []config.Message {
+	extra := msg.Extra
+	rmsg := []config.Message{}
+	for _, f := range extra[config.EventFileFailureSize] {
+		fi := f.(config.FileInfo)
+		text := fmt.Sprintf("file %s too big to download (%#v > allowed size: %#v)", fi.Name, fi.Size, general.MediaDownloadSize)
+		rmsg = append(rmsg, config.Message{Text: text, Username: "<system> ", Channel: msg.Channel, Account: msg.Account})
+	}
+	return rmsg
+}
+
+func GetAvatar(av map[string]string, userid string, general *config.Protocol) string {
+	if sha, ok := av[userid]; ok {
+		return general.MediaServerDownload + "/" + sha + "/" + userid + ".png"
+	}
+	return ""
+}
+
+func HandleDownloadSize(flog *logrus.Entry, msg *config.Message, name string, size int64, general *config.Protocol) error {
+	// check blacklist here
+	for _, entry := range general.MediaDownloadBlackList {
+		if entry != "" {
+			re, err := regexp.Compile(entry)
+			if err != nil {
+				flog.Errorf("incorrect regexp %s for %s", entry, msg.Account)
+				continue
+			}
+			if re.MatchString(name) {
+				return fmt.Errorf("Matching blacklist %s. Not downloading %s", entry, name)
+			}
+		}
+	}
+	flog.Debugf("Trying to download %#v with size %#v", name, size)
+	if int(size) > general.MediaDownloadSize {
+		msg.Event = config.EventFileFailureSize
+		msg.Extra[msg.Event] = append(msg.Extra[msg.Event], config.FileInfo{Name: name, Comment: msg.Text, Size: size})
+		return fmt.Errorf("File %#v to large to download (%#v). MediaDownloadSize is %#v", name, size, general.MediaDownloadSize)
+	}
+	return nil
+}
+
+func HandleDownloadData(flog *logrus.Entry, msg *config.Message, name, comment, url string, data *[]byte, general *config.Protocol) {
+	var avatar bool
+	flog.Debugf("Download OK %#v %#v", name, len(*data))
+	if msg.Event == config.EventAvatarDownload {
+		avatar = true
+	}
+	msg.Extra["file"] = append(msg.Extra["file"], config.FileInfo{Name: name, Data: data, URL: url, Comment: comment, Avatar: avatar})
+}
+
+func RemoveEmptyNewLines(msg string) string {
+	lines := ""
+	for _, line := range strings.Split(msg, "\n") {
+		if line != "" {
+			lines += line + "\n"
+		}
+	}
+	lines = strings.TrimRight(lines, "\n")
+	return lines
+}
+
+func ClipMessage(text string, length int) string {
+	// clip too long messages
+	if len(text) > length {
+		text = text[:length-len(" *message clipped*")]
+		if r, size := utf8.DecodeLastRuneInString(text); r == utf8.RuneError {
+			text = text[:len(text)-size]
+		}
+		text += " *message clipped*"
+	}
+	return text
+}
+
+func ParseMarkdown(input string) string {
+	md := markdown.New(markdown.XHTMLOutput(true), markdown.Breaks(true))
+	return (md.RenderToString([]byte(input)))
+}

bridge/helper/helper_test.go

@@ -0,0 +1,105 @@
+package helper
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+const testLineLength = 64
+
+var (
+	lineSplittingTestCases = map[string]struct {
+		input          string
+		splitOutput    []string
+		nonSplitOutput []string
+	}{
+		"Short single-line message": {
+			input:          "short",
+			splitOutput:    []string{"short"},
+			nonSplitOutput: []string{"short"},
+		},
+		"Long single-line message": {
+			input: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
+			splitOutput: []string{
+				"Lorem ipsum dolor sit amet, consectetur adipis <clipped message>",
+				"cing elit, sed do eiusmod tempor incididunt ut <clipped message>",
+				" labore et dolore magna aliqua.",
+			},
+			nonSplitOutput: []string{"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."},
+		},
+		"Short multi-line message": {
+			input: "I\ncan't\nget\nno\nsatisfaction!",
+			splitOutput: []string{
+				"I",
+				"can't",
+				"get",
+				"no",
+				"satisfaction!",
+			},
+			nonSplitOutput: []string{
+				"I",
+				"can't",
+				"get",
+				"no",
+				"satisfaction!",
+			},
+		},
+		"Long multi-line message": {
+			input: "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.\n" +
+				"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.\n" +
+				"Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.\n" +
+				"Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
+			splitOutput: []string{
+				"Lorem ipsum dolor sit amet, consectetur adipis <clipped message>",
+				"cing elit, sed do eiusmod tempor incididunt ut <clipped message>",
+				" labore et dolore magna aliqua.",
+				"Ut enim ad minim veniam, quis nostrud exercita <clipped message>",
+				"tion ullamco laboris nisi ut aliquip ex ea com <clipped message>",
+				"modo consequat.",
+				"Duis aute irure dolor in reprehenderit in volu <clipped message>",
+				"ptate velit esse cillum dolore eu fugiat nulla <clipped message>",
+				" pariatur.",
+				"Excepteur sint occaecat cupidatat non proident <clipped message>",
+				", sunt in culpa qui officia deserunt mollit an <clipped message>",
+				"im id est laborum.",
+			},
+			nonSplitOutput: []string{
+				"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.",
+				"Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat.",
+				"Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur.",
+				"Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.",
+			},
+		},
+		"Message ending with new-line.": {
+			input:          "Newline ending\n",
+			splitOutput:    []string{"Newline ending"},
+			nonSplitOutput: []string{"Newline ending"},
+		},
+		"Long message containing UTF-8 multi-byte runes": {
+			input: "不布人個我此而及單石業喜資富下我河下日沒一我臺空達的常景便物沒為……子大我別名解成？生賣的全直黑，我自我結毛分洲了世當，是政福那是東；斯說",
+			splitOutput: []string{
+				"不布人個我此而及單石業喜資富下 <clipped message>",
+				"我河下日沒一我臺空達的常景便物 <clipped message>",
+				"沒為……子大我別名解成？生賣的 <clipped message>",
+				"全直黑，我自我結毛分洲了世當， <clipped message>",
+				"是政福那是東；斯說",
+			},
+			nonSplitOutput: []string{"不布人個我此而及單石業喜資富下我河下日沒一我臺空達的常景便物沒為……子大我別名解成？生賣的全直黑，我自我結毛分洲了世當，是政福那是東；斯說"},
+		},
+	}
+)
+
+func TestGetSubLines(t *testing.T) {
+	for testname, testcase := range lineSplittingTestCases {
+		splitLines := GetSubLines(testcase.input, testLineLength)
+		assert.Equalf(t, testcase.splitOutput, splitLines, "'%s' testcase should give expected lines with splitting.", testname)
+		for _, splitLine := range splitLines {
+			byteLength := len([]byte(splitLine))
+			assert.True(t, byteLength <= testLineLength, "Splitted line '%s' of testcase '%s' should not exceed the maximum byte-length (%d vs. %d).", splitLine, testcase, byteLength, testLineLength)
+		}
+
+		nonSplitLines := GetSubLines(testcase.input, 0)
+		assert.Equalf(t, testcase.nonSplitOutput, nonSplitLines, "'%s' testcase should give expected lines without splitting.", testname)
+	}
+}

bridge/irc/handlers.go

@@ -0,0 +1,235 @@
+package birc
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"regexp"
+	"strconv"
+	"strings"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/dfordsoft/golib/ic"
+	"github.com/lrstanley/girc"
+	"github.com/paulrosania/go-charset/charset"
+	"github.com/saintfish/chardet"
+
+	// We need to import the 'data' package as an implicit dependency.
+	// See: https://godoc.org/github.com/paulrosania/go-charset/charset
+	_ "github.com/paulrosania/go-charset/data"
+)
+
+func (b *Birc) handleCharset(msg *config.Message) error {
+	if b.GetString("Charset") != "" {
+		switch b.GetString("Charset") {
+		case "gbk", "gb18030", "gb2312", "big5", "euc-kr", "euc-jp", "shift-jis", "iso-2022-jp":
+			msg.Text = ic.ConvertString("utf-8", b.GetString("Charset"), msg.Text)
+		default:
+			buf := new(bytes.Buffer)
+			w, err := charset.NewWriter(b.GetString("Charset"), buf)
+			if err != nil {
+				b.Log.Errorf("charset from utf-8 conversion failed: %s", err)
+				return err
+			}
+			fmt.Fprint(w, msg.Text)
+			w.Close()
+			msg.Text = buf.String()
+		}
+	}
+	return nil
+}
+
+// handleFiles returns true if we have handled the files, otherwise return false
+func (b *Birc) handleFiles(msg *config.Message) bool {
+	if msg.Extra == nil {
+		return false
+	}
+	for _, rmsg := range helper.HandleExtra(msg, b.General) {
+		b.Local <- rmsg
+	}
+	if len(msg.Extra["file"]) == 0 {
+		return false
+	}
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		if fi.Comment != "" {
+			msg.Text += fi.Comment + ": "
+		}
+		if fi.URL != "" {
+			msg.Text = fi.URL
+			if fi.Comment != "" {
+				msg.Text = fi.Comment + ": " + fi.URL
+			}
+		}
+		b.Local <- config.Message{Text: msg.Text, Username: msg.Username, Channel: msg.Channel, Event: msg.Event}
+	}
+	return true
+}
+
+func (b *Birc) handleJoinPart(client *girc.Client, event girc.Event) {
+	if len(event.Params) == 0 {
+		b.Log.Debugf("handleJoinPart: empty Params? %#v", event)
+		return
+	}
+	channel := strings.ToLower(event.Params[0])
+	if event.Command == "KICK" && event.Params[1] == b.Nick {
+		b.Log.Infof("Got kicked from %s by %s", channel, event.Source.Name)
+		time.Sleep(time.Duration(b.GetInt("RejoinDelay")) * time.Second)
+		b.Remote <- config.Message{Username: "system", Text: "rejoin", Channel: channel, Account: b.Account, Event: config.EventRejoinChannels}
+		return
+	}
+	if event.Command == "QUIT" {
+		if event.Source.Name == b.Nick && strings.Contains(event.Trailing, "Ping timeout") {
+			b.Log.Infof("%s reconnecting ..", b.Account)
+			b.Remote <- config.Message{Username: "system", Text: "reconnect", Channel: channel, Account: b.Account, Event: config.EventFailure}
+			return
+		}
+	}
+	if event.Source.Name != b.Nick {
+		if b.GetBool("nosendjoinpart") {
+			return
+		}
+		b.Log.Debugf("<= Sending JOIN_LEAVE event from %s to gateway", b.Account)
+		msg := config.Message{Username: "system", Text: event.Source.Name + " " + strings.ToLower(event.Command) + "s", Channel: channel, Account: b.Account, Event: config.EventJoinLeave}
+		b.Log.Debugf("<= Message is %#v", msg)
+		b.Remote <- msg
+		return
+	}
+	b.Log.Debugf("handle %#v", event)
+}
+
+func (b *Birc) handleNewConnection(client *girc.Client, event girc.Event) {
+	b.Log.Debug("Registering callbacks")
+	i := b.i
+	b.Nick = event.Params[0]
+
+	i.Handlers.Add("PRIVMSG", b.handlePrivMsg)
+	i.Handlers.Add("CTCP_ACTION", b.handlePrivMsg)
+	i.Handlers.Add(girc.RPL_TOPICWHOTIME, b.handleTopicWhoTime)
+	i.Handlers.Add(girc.NOTICE, b.handleNotice)
+	i.Handlers.Add("JOIN", b.handleJoinPart)
+	i.Handlers.Add("PART", b.handleJoinPart)
+	i.Handlers.Add("QUIT", b.handleJoinPart)
+	i.Handlers.Add("KICK", b.handleJoinPart)
+}
+
+func (b *Birc) handleNickServ() {
+	if !b.GetBool("UseSASL") && b.GetString("NickServNick") != "" && b.GetString("NickServPassword") != "" {
+		b.Log.Debugf("Sending identify to nickserv %s", b.GetString("NickServNick"))
+		b.i.Cmd.Message(b.GetString("NickServNick"), "IDENTIFY "+b.GetString("NickServPassword"))
+	}
+	if strings.EqualFold(b.GetString("NickServNick"), "Q@CServe.quakenet.org") {
+		b.Log.Debugf("Authenticating %s against %s", b.GetString("NickServUsername"), b.GetString("NickServNick"))
+		b.i.Cmd.Message(b.GetString("NickServNick"), "AUTH "+b.GetString("NickServUsername")+" "+b.GetString("NickServPassword"))
+	}
+	// give nickserv some slack
+	time.Sleep(time.Second * 5)
+	b.authDone = true
+}
+
+func (b *Birc) handleNotice(client *girc.Client, event girc.Event) {
+	if strings.Contains(event.String(), "This nickname is registered") && event.Source.Name == b.GetString("NickServNick") {
+		b.handleNickServ()
+	} else {
+		b.handlePrivMsg(client, event)
+	}
+}
+
+func (b *Birc) handleOther(client *girc.Client, event girc.Event) {
+	if b.GetInt("DebugLevel") == 1 {
+		if event.Command != "CLIENT_STATE_UPDATED" &&
+			event.Command != "CLIENT_GENERAL_UPDATED" {
+			b.Log.Debugf("%#v", event.String())
+		}
+		return
+	}
+	switch event.Command {
+	case "372", "375", "376", "250", "251", "252", "253", "254", "255", "265", "266", "002", "003", "004", "005":
+		return
+	}
+	b.Log.Debugf("%#v", event.String())
+}
+
+func (b *Birc) handleOtherAuth(client *girc.Client, event girc.Event) {
+	b.handleNickServ()
+	b.handleRunCommands()
+	// we are now fully connected
+	b.connected <- nil
+}
+
+func (b *Birc) handlePrivMsg(client *girc.Client, event girc.Event) {
+	if b.skipPrivMsg(event) {
+		return
+	}
+	rmsg := config.Message{Username: event.Source.Name, Channel: strings.ToLower(event.Params[0]), Account: b.Account, UserID: event.Source.Ident + "@" + event.Source.Host}
+	b.Log.Debugf("== Receiving PRIVMSG: %s %s %#v", event.Source.Name, event.Trailing, event)
+
+	// set action event
+	if event.IsAction() {
+		rmsg.Event = config.EventUserAction
+	}
+
+	// strip action, we made an event if it was an action
+	rmsg.Text += event.StripAction()
+
+	// strip IRC colors
+	re := regexp.MustCompile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
+	rmsg.Text = re.ReplaceAllString(rmsg.Text, "")
+
+	// start detecting the charset
+	mycharset := b.GetString("Charset")
+	if mycharset == "" {
+		// detect what were sending so that we convert it to utf-8
+		detector := chardet.NewTextDetector()
+		result, err := detector.DetectBest([]byte(rmsg.Text))
+		if err != nil {
+			b.Log.Infof("detection failed for rmsg.Text: %#v", rmsg.Text)
+			return
+		}
+		b.Log.Debugf("detected %s confidence %#v", result.Charset, result.Confidence)
+		mycharset = result.Charset
+		// if we're not sure, just pick ISO-8859-1
+		if result.Confidence < 80 {
+			mycharset = "ISO-8859-1"
+		}
+	}
+	switch mycharset {
+	case "gbk", "gb18030", "gb2312", "big5", "euc-kr", "euc-jp", "shift-jis", "iso-2022-jp":
+		rmsg.Text = ic.ConvertString("utf-8", b.GetString("Charset"), rmsg.Text)
+	default:
+		r, err := charset.NewReader(mycharset, strings.NewReader(rmsg.Text))
+		if err != nil {
+			b.Log.Errorf("charset to utf-8 conversion failed: %s", err)
+			return
+		}
+		output, _ := ioutil.ReadAll(r)
+		rmsg.Text = string(output)
+	}
+
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", event.Params[0], b.Account)
+	b.Remote <- rmsg
+}
+
+func (b *Birc) handleRunCommands() {
+	for _, cmd := range b.GetStringSlice("RunCommands") {
+		if err := b.i.Cmd.SendRaw(cmd); err != nil {
+			b.Log.Errorf("RunCommands %s failed: %s", cmd, err)
+		}
+		time.Sleep(time.Second)
+	}
+}
+
+func (b *Birc) handleTopicWhoTime(client *girc.Client, event girc.Event) {
+	parts := strings.Split(event.Params[2], "!")
+	t, err := strconv.ParseInt(event.Params[3], 10, 64)
+	if err != nil {
+		b.Log.Errorf("Invalid time stamp: %s", event.Params[3])
+	}
+	user := parts[0]
+	if len(parts) > 1 {
+		user += " [" + parts[1] + "]"
+	}
+	b.Log.Debugf("%s: Topic set by %s [%s]", event.Command, user, time.Unix(t, 0))
+}

bridge/irc/helper.go

@@ -1,59 +0,0 @@
-package birc
-
-import (
-	"strings"
-)
-
-func tableformatter(nicks []string, nicksPerRow int, continued bool) string {
-	result := "|IRC users"
-	if continued {
-		result = "|(continued)"
-	}
-	for i := 0; i < 2; i++ {
-		for j := 1; j <= nicksPerRow && j <= len(nicks); j++ {
-			if i == 0 {
-				result += "|"
-			} else {
-				result += ":-|"
-			}
-		}
-		result += "\r\n|"
-	}
-	result += nicks[0] + "|"
-	for i := 1; i < len(nicks); i++ {
-		if i%nicksPerRow == 0 {
-			result += "\r\n|" + nicks[i] + "|"
-		} else {
-			result += nicks[i] + "|"
-		}
-	}
-	return result
-}
-
-func plainformatter(nicks []string, nicksPerRow int) string {
-	return strings.Join(nicks, ", ") + " currently on IRC"
-}
-
-func IsMarkup(message string) bool {
-	switch message[0] {
-	case '|':
-		fallthrough
-	case '#':
-		fallthrough
-	case '_':
-		fallthrough
-	case '*':
-		fallthrough
-	case '~':
-		fallthrough
-	case '-':
-		fallthrough
-	case ':':
-		fallthrough
-	case '>':
-		fallthrough
-	case '=':
-		return true
-	}
-	return false
-}

bridge/irc/irc.go

@@ -2,193 +2,302 @@ package birc
 
 import (
 	"crypto/tls"
-	"github.com/42wim/matterbridge/bridge/config"
-	log "github.com/Sirupsen/logrus"
-	ircm "github.com/sorcix/irc"
-	"github.com/thoj/go-ircevent"
+	"fmt"
+	"hash/crc32"
+	"net"
 	"sort"
 	"strconv"
 	"strings"
 	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/lrstanley/girc"
+
+	// We need to import the 'data' package as an implicit dependency.
+	// See: https://godoc.org/github.com/paulrosania/go-charset/charset
+	_ "github.com/paulrosania/go-charset/data"
 )
 
-//type Bridge struct {
 type Birc struct {
-	i              *irc.Connection
-	ircNick        string
-	ircMap         map[string]string
-	names          map[string][]string
-	ircIgnoreNicks []string
-	*config.Config
-	Remote chan config.Message
+	i                                         *girc.Client
+	Nick                                      string
+	names                                     map[string][]string
+	connected                                 chan error
+	Local                                     chan config.Message // local queue for flood control
+	FirstConnection, authDone                 bool
+	MessageDelay, MessageQueue, MessageLength int
+
+	*bridge.Config
 }
 
-type FancyLog struct {
-	irc *log.Entry
-}
-
-var flog FancyLog
-
-func init() {
-	flog.irc = log.WithFields(log.Fields{"module": "irc"})
-}
-
-func New(config *config.Config, c chan config.Message) *Birc {
+func New(cfg *bridge.Config) bridge.Bridger {
 	b := &Birc{}
-	b.Config = config
-	b.Remote = c
-	b.ircNick = b.Config.IRC.Nick
-	b.ircMap = make(map[string]string)
+	b.Config = cfg
+	b.Nick = b.GetString("Nick")
 	b.names = make(map[string][]string)
-	b.ircIgnoreNicks = strings.Fields(b.Config.IRC.IgnoreNicks)
+	b.connected = make(chan error)
+	if b.GetInt("MessageDelay") == 0 {
+		b.MessageDelay = 1300
+	} else {
+		b.MessageDelay = b.GetInt("MessageDelay")
+	}
+	if b.GetInt("MessageQueue") == 0 {
+		b.MessageQueue = 30
+	} else {
+		b.MessageQueue = b.GetInt("MessageQueue")
+	}
+	if b.GetInt("MessageLength") == 0 {
+		b.MessageLength = 400
+	} else {
+		b.MessageLength = b.GetInt("MessageLength")
+	}
+	b.FirstConnection = true
 	return b
 }
 
 func (b *Birc) Command(msg *config.Message) string {
-	switch msg.Text {
-	case "!users":
-		b.i.SendRaw("NAMES " + msg.Channel)
+	if msg.Text == "!users" {
+		b.i.Handlers.Add(girc.RPL_NAMREPLY, b.storeNames)
+		b.i.Handlers.Add(girc.RPL_ENDOFNAMES, b.endNames)
+		b.i.Cmd.SendRaw("NAMES " + msg.Channel) //nolint:errcheck
 	}
 	return ""
 }
 
 func (b *Birc) Connect() error {
-	flog.irc.Info("Trying IRC connection")
-	i := irc.IRC(b.Config.IRC.Nick, b.Config.IRC.Nick)
-	i.UseTLS = b.Config.IRC.UseTLS
-	i.UseSASL = b.Config.IRC.UseSASL
-	i.SASLLogin = b.Config.IRC.NickServNick
-	i.SASLPassword = b.Config.IRC.NickServPassword
-	i.TLSConfig = &tls.Config{InsecureSkipVerify: b.Config.IRC.SkipTLSVerify}
-	if b.Config.IRC.Password != "" {
-		i.Password = b.Config.IRC.Password
-	}
-	i.AddCallback(ircm.RPL_WELCOME, b.handleNewConnection)
-	err := i.Connect(b.Config.IRC.Server)
+	b.Local = make(chan config.Message, b.MessageQueue+10)
+	b.Log.Infof("Connecting %s", b.GetString("Server"))
+
+	i, err := b.getClient()
 	if err != nil {
 		return err
 	}
-	flog.irc.Info("Connection succeeded")
+
+	if b.GetBool("UseSASL") {
+		i.Config.SASL = &girc.SASLPlain{
+			User: b.GetString("NickServNick"),
+			Pass: b.GetString("NickServPassword"),
+		}
+	}
+
+	i.Handlers.Add(girc.RPL_WELCOME, b.handleNewConnection)
+	i.Handlers.Add(girc.RPL_ENDOFMOTD, b.handleOtherAuth)
+	i.Handlers.Add(girc.ERR_NOMOTD, b.handleOtherAuth)
+	i.Handlers.Add(girc.ALL_EVENTS, b.handleOther)
 	b.i = i
+
+	go b.doConnect()
+
+	err = <-b.connected
+	if err != nil {
+		return fmt.Errorf("connection failed %s", err)
+	}
+	b.Log.Info("Connection succeeded")
+	b.FirstConnection = false
+	if b.GetInt("DebugLevel") == 0 {
+		i.Handlers.Clear(girc.ALL_EVENTS)
+	}
+	go b.doSend()
 	return nil
 }
 
-func (b *Birc) Name() string {
-	return "irc"
+func (b *Birc) Disconnect() error {
+	b.i.Close()
+	close(b.Local)
+	return nil
 }
 
-func (b *Birc) Send(msg config.Message) error {
-	if msg.Origin == "irc" {
-		return nil
+func (b *Birc) JoinChannel(channel config.ChannelInfo) error {
+	// need to check if we have nickserv auth done before joining channels
+	for {
+		if b.authDone {
+			break
+		}
+		time.Sleep(time.Second)
 	}
+	if channel.Options.Key != "" {
+		b.Log.Debugf("using key %s for channel %s", channel.Options.Key, channel.Name)
+		b.i.Cmd.JoinKey(channel.Name, channel.Options.Key)
+	} else {
+		b.i.Cmd.Join(channel.Name)
+	}
+	return nil
+}
+
+func (b *Birc) Send(msg config.Message) (string, error) {
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// we can be in between reconnects #385
+	if !b.i.IsConnected() {
+		b.Log.Error("Not connected to server, dropping message")
+	}
+
+	// Execute a command
 	if strings.HasPrefix(msg.Text, "!") {
 		b.Command(&msg)
-		return nil
 	}
-	b.i.Privmsg(msg.Channel, msg.Username+msg.Text)
-	return nil
+
+	// convert to specified charset
+	if err := b.handleCharset(&msg); err != nil {
+		return "", err
+	}
+
+	// handle files, return if we're done here
+	if ok := b.handleFiles(&msg); ok {
+		return "", nil
+	}
+
+	var msgLines []string
+	if b.GetBool("MessageSplit") {
+		msgLines = helper.GetSubLines(msg.Text, b.MessageLength)
+	} else {
+		msgLines = helper.GetSubLines(msg.Text, 0)
+	}
+	for i := range msgLines {
+		if len(b.Local) >= b.MessageQueue {
+			b.Log.Debugf("flooding, dropping message (queue at %d)", len(b.Local))
+			return "", nil
+		}
+
+		b.Local <- config.Message{
+			Text:     msgLines[i],
+			Username: msg.Username,
+			Channel:  msg.Channel,
+			Event:    msg.Event,
+		}
+	}
+	return "", nil
 }
 
-func (b *Birc) endNames(event *irc.Event) {
-	channel := event.Arguments[1]
+func (b *Birc) doConnect() {
+	for {
+		if err := b.i.Connect(); err != nil {
+			b.Log.Errorf("disconnect: error: %s", err)
+			if b.FirstConnection {
+				b.connected <- err
+				return
+			}
+		} else {
+			b.Log.Info("disconnect: client requested quit")
+		}
+		b.Log.Info("reconnecting in 30 seconds...")
+		time.Sleep(30 * time.Second)
+		b.i.Handlers.Clear(girc.RPL_WELCOME)
+		b.i.Handlers.Add(girc.RPL_WELCOME, func(client *girc.Client, event girc.Event) {
+			b.Remote <- config.Message{Username: "system", Text: "rejoin", Channel: "", Account: b.Account, Event: config.EventRejoinChannels}
+			// set our correct nick on reconnect if necessary
+			b.Nick = event.Source.Name
+		})
+	}
+}
+
+func (b *Birc) doSend() {
+	rate := time.Millisecond * time.Duration(b.MessageDelay)
+	throttle := time.NewTicker(rate)
+	for msg := range b.Local {
+		<-throttle.C
+		username := msg.Username
+		if b.GetBool("Colornicks") {
+			checksum := crc32.ChecksumIEEE([]byte(msg.Username))
+			colorCode := checksum%14 + 2 // quick fix - prevent white or black color codes
+			username = fmt.Sprintf("\x03%02d%s\x0F", colorCode, msg.Username)
+		}
+		if msg.Event == config.EventUserAction {
+			b.i.Cmd.Action(msg.Channel, username+msg.Text)
+		} else {
+			b.Log.Debugf("Sending to channel %s", msg.Channel)
+			b.i.Cmd.Message(msg.Channel, username+msg.Text)
+		}
+	}
+}
+
+// validateInput validates the server/port/nick configuration. Returns a *girc.Client if successful
+func (b *Birc) getClient() (*girc.Client, error) {
+	server, portstr, err := net.SplitHostPort(b.GetString("Server"))
+	if err != nil {
+		return nil, err
+	}
+	port, err := strconv.Atoi(portstr)
+	if err != nil {
+		return nil, err
+	}
+	// fix strict user handling of girc
+	user := b.GetString("Nick")
+	for !girc.IsValidUser(user) {
+		if len(user) == 1 {
+			user = "matterbridge"
+			break
+		}
+		user = user[1:]
+	}
+
+	i := girc.New(girc.Config{
+		Server:     server,
+		ServerPass: b.GetString("Password"),
+		Port:       port,
+		Nick:       b.GetString("Nick"),
+		User:       user,
+		Name:       b.GetString("Nick"),
+		SSL:        b.GetBool("UseTLS"),
+		TLSConfig:  &tls.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"), ServerName: server}, //nolint:gosec
+		PingDelay:  time.Minute,
+	})
+	return i, nil
+}
+
+func (b *Birc) endNames(client *girc.Client, event girc.Event) {
+	channel := event.Params[1]
 	sort.Strings(b.names[channel])
 	maxNamesPerPost := (300 / b.nicksPerRow()) * b.nicksPerRow()
-	continued := false
 	for len(b.names[channel]) > maxNamesPerPost {
-		b.Remote <- config.Message{Username: b.ircNick, Text: b.formatnicks(b.names[channel][0:maxNamesPerPost], continued), Channel: channel, Origin: "irc"}
+		b.Remote <- config.Message{Username: b.Nick, Text: b.formatnicks(b.names[channel][0:maxNamesPerPost]),
+			Channel: channel, Account: b.Account}
 		b.names[channel] = b.names[channel][maxNamesPerPost:]
-		continued = true
 	}
-	b.Remote <- config.Message{Username: b.ircNick, Text: b.formatnicks(b.names[channel], continued), Channel: channel, Origin: "irc"}
+	b.Remote <- config.Message{Username: b.Nick, Text: b.formatnicks(b.names[channel]),
+		Channel: channel, Account: b.Account}
 	b.names[channel] = nil
+	b.i.Handlers.Clear(girc.RPL_NAMREPLY)
+	b.i.Handlers.Clear(girc.RPL_ENDOFNAMES)
 }
 
-func (b *Birc) handleNewConnection(event *irc.Event) {
-	flog.irc.Info("Registering callbacks")
-	i := b.i
-	b.ircNick = event.Arguments[0]
-	i.AddCallback("PRIVMSG", b.handlePrivMsg)
-	i.AddCallback("CTCP_ACTION", b.handlePrivMsg)
-	i.AddCallback(ircm.RPL_TOPICWHOTIME, b.handleTopicWhoTime)
-	i.AddCallback(ircm.RPL_ENDOFNAMES, b.endNames)
-	i.AddCallback(ircm.RPL_NAMREPLY, b.storeNames)
-	i.AddCallback(ircm.NOTICE, b.handleNotice)
-	i.AddCallback(ircm.RPL_MYINFO, func(e *irc.Event) { flog.irc.Infof("%s: %s", e.Code, strings.Join(e.Arguments[1:], " ")) })
-	i.AddCallback("PING", func(e *irc.Event) {
-		i.SendRaw("PONG :" + e.Message())
-		flog.irc.Debugf("PING/PONG")
-	})
-	if b.Config.Mattermost.ShowJoinPart {
-		i.AddCallback("JOIN", b.handleJoinPart)
-		i.AddCallback("PART", b.handleJoinPart)
+func (b *Birc) skipPrivMsg(event girc.Event) bool {
+	// Our nick can be changed
+	b.Nick = b.i.GetNick()
+
+	// freenode doesn't send 001 as first reply
+	if event.Command == "NOTICE" {
+		return true
 	}
-	i.AddCallback("*", b.handleOther)
-	b.setupChannels()
-}
-
-func (b *Birc) handleJoinPart(event *irc.Event) {
-	//b.Send(b.ircNick, b.ircNickFormat(event.Nick)+" "+strings.ToLower(event.Code)+"s "+event.Message(), b.getMMChannel(event.Arguments[0]))
-}
-
-func (b *Birc) handleNotice(event *irc.Event) {
-	if strings.Contains(event.Message(), "This nickname is registered") {
-		b.i.Privmsg(b.Config.IRC.NickServNick, "IDENTIFY "+b.Config.IRC.NickServPassword)
+	// don't forward queries to the bot
+	if event.Params[0] == b.Nick {
+		return true
 	}
-}
-
-func (b *Birc) handleOther(event *irc.Event) {
-	flog.irc.Debugf("%#v", event)
-}
-
-func (b *Birc) handlePrivMsg(event *irc.Event) {
-	flog.irc.Debugf("handlePrivMsg() %s %s", event.Nick, event.Message())
-	msg := ""
-	if event.Code == "CTCP_ACTION" {
-		msg = event.Nick + " "
+	// don't forward message from ourself
+	if event.Source.Name == b.Nick {
+		return true
 	}
-	msg += event.Message()
-	b.Remote <- config.Message{Username: event.Nick, Text: msg, Channel: event.Arguments[0], Origin: "irc"}
-}
-
-func (b *Birc) handleTopicWhoTime(event *irc.Event) {
-	parts := strings.Split(event.Arguments[2], "!")
-	t, err := strconv.ParseInt(event.Arguments[3], 10, 64)
-	if err != nil {
-		flog.irc.Errorf("Invalid time stamp: %s", event.Arguments[3])
-	}
-	user := parts[0]
-	if len(parts) > 1 {
-		user += " [" + parts[1] + "]"
-	}
-	flog.irc.Infof("%s: Topic set by %s [%s]", event.Code, user, time.Unix(t, 0))
+	return false
 }
 
 func (b *Birc) nicksPerRow() int {
-	if b.Config.Mattermost.NicksPerRow < 1 {
-		return 4
-	}
-	return b.Config.Mattermost.NicksPerRow
+	return 4
 }
 
-func (b *Birc) setupChannels() {
-	for _, val := range b.Config.Channel {
-		flog.irc.Infof("Joining %s as %s", val.IRC, b.ircNick)
-		b.i.Join(val.IRC)
-	}
-}
-
-func (b *Birc) storeNames(event *irc.Event) {
-	channel := event.Arguments[2]
+func (b *Birc) storeNames(client *girc.Client, event girc.Event) {
+	channel := event.Params[2]
 	b.names[channel] = append(
 		b.names[channel],
-		strings.Split(strings.TrimSpace(event.Message()), " ")...)
+		strings.Split(strings.TrimSpace(event.Trailing), " ")...)
 }
 
-func (b *Birc) formatnicks(nicks []string, continued bool) string {
-	switch b.Config.Mattermost.NickFormatter {
-	case "table":
-		return tableformatter(nicks, b.nicksPerRow(), continued)
-	default:
-		return plainformatter(nicks, b.nicksPerRow())
-	}
+func (b *Birc) formatnicks(nicks []string) string {
+	return strings.Join(nicks, ", ") + " currently on IRC"
 }

bridge/matrix/matrix.go

@@ -0,0 +1,325 @@
+package bmatrix
+
+import (
+	"bytes"
+	"fmt"
+	"html"
+	"mime"
+	"regexp"
+	"strings"
+	"sync"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	matrix "github.com/matterbridge/gomatrix"
+)
+
+type Bmatrix struct {
+	mc      *matrix.Client
+	UserID  string
+	RoomMap map[string]string
+	sync.RWMutex
+	*bridge.Config
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &Bmatrix{Config: cfg}
+	b.RoomMap = make(map[string]string)
+	return b
+}
+
+func (b *Bmatrix) Connect() error {
+	var err error
+	b.Log.Infof("Connecting %s", b.GetString("Server"))
+	b.mc, err = matrix.NewClient(b.GetString("Server"), "", "")
+	if err != nil {
+		return err
+	}
+	resp, err := b.mc.Login(&matrix.ReqLogin{
+		Type:     "m.login.password",
+		User:     b.GetString("Login"),
+		Password: b.GetString("Password"),
+	})
+	if err != nil {
+		return err
+	}
+	b.mc.SetCredentials(resp.UserID, resp.AccessToken)
+	b.UserID = resp.UserID
+	b.Log.Info("Connection succeeded")
+	go b.handlematrix()
+	return nil
+}
+
+func (b *Bmatrix) Disconnect() error {
+	return nil
+}
+
+func (b *Bmatrix) JoinChannel(channel config.ChannelInfo) error {
+	resp, err := b.mc.JoinRoom(channel.Name, "", nil)
+	if err != nil {
+		return err
+	}
+	b.Lock()
+	b.RoomMap[resp.RoomID] = channel.Name
+	b.Unlock()
+	return err
+}
+
+func (b *Bmatrix) Send(msg config.Message) (string, error) {
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	channel := b.getRoomID(msg.Channel)
+	b.Log.Debugf("Channel %s maps to channel id %s", msg.Channel, channel)
+
+	// Make a action /me of the message
+	if msg.Event == config.EventUserAction {
+		m := matrix.TextMessage{
+			MsgType: "m.emote",
+			Body:    msg.Username + msg.Text,
+		}
+		resp, err := b.mc.SendMessageEvent(channel, "m.room.message", m)
+		if err != nil {
+			return "", err
+		}
+		return resp.EventID, err
+	}
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			return "", nil
+		}
+		resp, err := b.mc.RedactEvent(channel, msg.ID, &matrix.ReqRedact{})
+		if err != nil {
+			return "", err
+		}
+		return resp.EventID, err
+	}
+
+	// Upload a file if it exists
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			if _, err := b.mc.SendText(channel, rmsg.Username+rmsg.Text); err != nil {
+				b.Log.Errorf("sendText failed: %s", err)
+			}
+		}
+		// check if we have files to upload (from slack, telegram or mattermost)
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFiles(&msg, channel)
+		}
+	}
+
+	// Edit message if we have an ID
+	// matrix has no editing support
+
+	// Post normal message with HTML support (eg riot.im)
+	resp, err := b.mc.SendHTML(channel, msg.Username+msg.Text, html.EscapeString(msg.Username)+helper.ParseMarkdown(msg.Text))
+	if err != nil {
+		return "", err
+	}
+	return resp.EventID, err
+}
+
+func (b *Bmatrix) getRoomID(channel string) string {
+	b.RLock()
+	defer b.RUnlock()
+	for ID, name := range b.RoomMap {
+		if name == channel {
+			return ID
+		}
+	}
+	return ""
+}
+
+func (b *Bmatrix) handlematrix() {
+	syncer := b.mc.Syncer.(*matrix.DefaultSyncer)
+	syncer.OnEventType("m.room.redaction", b.handleEvent)
+	syncer.OnEventType("m.room.message", b.handleEvent)
+	go func() {
+		for {
+			if err := b.mc.Sync(); err != nil {
+				b.Log.Println("Sync() returned ", err)
+			}
+		}
+	}()
+}
+
+func (b *Bmatrix) handleEvent(ev *matrix.Event) {
+	b.Log.Debugf("== Receiving event: %#v", ev)
+	if ev.Sender != b.UserID {
+		b.RLock()
+		channel, ok := b.RoomMap[ev.RoomID]
+		b.RUnlock()
+		if !ok {
+			b.Log.Debugf("Unknown room %s", ev.RoomID)
+			return
+		}
+
+		// TODO download avatar
+
+		// Create our message
+		rmsg := config.Message{Username: ev.Sender[1:], Channel: channel, Account: b.Account, UserID: ev.Sender, ID: ev.ID}
+
+		// Text must be a string
+		if rmsg.Text, ok = ev.Content["body"].(string); !ok {
+			b.Log.Errorf("Content[body] is not a string: %T\n%#v",
+				ev.Content["body"], ev.Content)
+			return
+		}
+
+		// Remove homeserver suffix if configured
+		if b.GetBool("NoHomeServerSuffix") {
+			re := regexp.MustCompile("(.*?):.*")
+			rmsg.Username = re.ReplaceAllString(rmsg.Username, `$1`)
+		}
+
+		// Delete event
+		if ev.Type == "m.room.redaction" {
+			rmsg.Event = config.EventMsgDelete
+			rmsg.ID = ev.Redacts
+			rmsg.Text = config.EventMsgDelete
+			b.Remote <- rmsg
+			return
+		}
+
+		// Do we have a /me action
+		if ev.Content["msgtype"].(string) == "m.emote" {
+			rmsg.Event = config.EventUserAction
+		}
+
+		// Do we have attachments
+		if b.containsAttachment(ev.Content) {
+			err := b.handleDownloadFile(&rmsg, ev.Content)
+			if err != nil {
+				b.Log.Errorf("download failed: %#v", err)
+			}
+		}
+
+		b.Log.Debugf("<= Sending message from %s on %s to gateway", ev.Sender, b.Account)
+		b.Remote <- rmsg
+	}
+}
+
+// handleDownloadFile handles file download
+func (b *Bmatrix) handleDownloadFile(rmsg *config.Message, content map[string]interface{}) error {
+	var (
+		ok                        bool
+		url, name, msgtype, mtype string
+		info                      map[string]interface{}
+		size                      float64
+	)
+
+	rmsg.Extra = make(map[string][]interface{})
+	if url, ok = content["url"].(string); !ok {
+		return fmt.Errorf("url isn't a %T", url)
+	}
+	url = strings.Replace(url, "mxc://", b.GetString("Server")+"/_matrix/media/v1/download/", -1)
+
+	if info, ok = content["info"].(map[string]interface{}); !ok {
+		return fmt.Errorf("info isn't a %T", info)
+	}
+	if size, ok = info["size"].(float64); !ok {
+		return fmt.Errorf("size isn't a %T", size)
+	}
+	if name, ok = content["body"].(string); !ok {
+		return fmt.Errorf("name isn't a %T", name)
+	}
+	if msgtype, ok = content["msgtype"].(string); !ok {
+		return fmt.Errorf("msgtype isn't a %T", msgtype)
+	}
+	if mtype, ok = info["mimetype"].(string); !ok {
+		return fmt.Errorf("mtype isn't a %T", mtype)
+	}
+
+	// check if we have an image uploaded without extension
+	if !strings.Contains(name, ".") {
+		if msgtype == "m.image" {
+			mext, _ := mime.ExtensionsByType(mtype)
+			if len(mext) > 0 {
+				name += mext[0]
+			}
+		} else {
+			// just a default .png extension if we don't have mime info
+			name += ".png"
+		}
+	}
+
+	// check if the size is ok
+	err := helper.HandleDownloadSize(b.Log, rmsg, name, int64(size), b.General)
+	if err != nil {
+		return err
+	}
+	// actually download the file
+	data, err := helper.DownloadFile(url)
+	if err != nil {
+		return fmt.Errorf("download %s failed %#v", url, err)
+	}
+	// add the downloaded data to the message
+	helper.HandleDownloadData(b.Log, rmsg, name, "", url, data, b.General)
+	return nil
+}
+
+// handleUploadFiles handles native upload of files.
+func (b *Bmatrix) handleUploadFiles(msg *config.Message, channel string) (string, error) {
+	for _, f := range msg.Extra["file"] {
+		if fi, ok := f.(config.FileInfo); ok {
+			b.handleUploadFile(msg, channel, &fi)
+		}
+	}
+	return "", nil
+}
+
+// handleUploadFile handles native upload of a file.
+func (b *Bmatrix) handleUploadFile(msg *config.Message, channel string, fi *config.FileInfo) {
+	content := bytes.NewReader(*fi.Data)
+	sp := strings.Split(fi.Name, ".")
+	mtype := mime.TypeByExtension("." + sp[len(sp)-1])
+	if !strings.Contains(mtype, "image") && !strings.Contains(mtype, "video") {
+		return
+	}
+	if fi.Comment != "" {
+		_, err := b.mc.SendText(channel, msg.Username+fi.Comment)
+		if err != nil {
+			b.Log.Errorf("file comment failed: %#v", err)
+		}
+	}
+	b.Log.Debugf("uploading file: %s %s", fi.Name, mtype)
+	res, err := b.mc.UploadToContentRepo(content, mtype, int64(len(*fi.Data)))
+	if err != nil {
+		b.Log.Errorf("file upload failed: %#v", err)
+		return
+	}
+
+	switch {
+	case strings.Contains(mtype, "video"):
+		b.Log.Debugf("sendVideo %s", res.ContentURI)
+		_, err = b.mc.SendVideo(channel, fi.Name, res.ContentURI)
+		if err != nil {
+			b.Log.Errorf("sendVideo failed: %#v", err)
+		}
+	case strings.Contains(mtype, "image"):
+		b.Log.Debugf("sendImage %s", res.ContentURI)
+		_, err = b.mc.SendImage(channel, fi.Name, res.ContentURI)
+		if err != nil {
+			b.Log.Errorf("sendImage failed: %#v", err)
+		}
+	}
+	b.Log.Debugf("result: %#v", res)
+}
+
+// skipMessages returns true if this message should not be handled
+func (b *Bmatrix) containsAttachment(content map[string]interface{}) bool {
+	// Skip empty messages
+	if content["msgtype"] == nil {
+		return false
+	}
+
+	// Only allow image,video or file msgtypes
+	if !(content["msgtype"].(string) == "m.image" ||
+		content["msgtype"].(string) == "m.video" ||
+		content["msgtype"].(string) == "m.file") {
+		return false
+	}
+	return true
+}

bridge/mattermost/handlers.go

@@ -0,0 +1,195 @@
+package bmattermost
+
+import (
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/42wim/matterbridge/matterclient"
+	"github.com/mattermost/mattermost-server/model"
+)
+
+// handleDownloadAvatar downloads the avatar of userid from channel
+// sends a EVENT_AVATAR_DOWNLOAD message to the gateway if successful.
+// logs an error message if it fails
+func (b *Bmattermost) handleDownloadAvatar(userid string, channel string) {
+	rmsg := config.Message{
+		Username: "system",
+		Text:     "avatar",
+		Channel:  channel,
+		Account:  b.Account,
+		UserID:   userid,
+		Event:    config.EventAvatarDownload,
+		Extra:    make(map[string][]interface{}),
+	}
+	if _, ok := b.avatarMap[userid]; !ok {
+		data, resp := b.mc.Client.GetProfileImage(userid, "")
+		if resp.Error != nil {
+			b.Log.Errorf("ProfileImage download failed for %#v %s", userid, resp.Error)
+			return
+		}
+		err := helper.HandleDownloadSize(b.Log, &rmsg, userid+".png", int64(len(data)), b.General)
+		if err != nil {
+			b.Log.Error(err)
+			return
+		}
+		helper.HandleDownloadData(b.Log, &rmsg, userid+".png", rmsg.Text, "", &data, b.General)
+		b.Remote <- rmsg
+	}
+}
+
+// handleDownloadFile handles file download
+func (b *Bmattermost) handleDownloadFile(rmsg *config.Message, id string) error {
+	url, _ := b.mc.Client.GetFileLink(id)
+	finfo, resp := b.mc.Client.GetFileInfo(id)
+	if resp.Error != nil {
+		return resp.Error
+	}
+	err := helper.HandleDownloadSize(b.Log, rmsg, finfo.Name, finfo.Size, b.General)
+	if err != nil {
+		return err
+	}
+	data, resp := b.mc.Client.DownloadFile(id, true)
+	if resp.Error != nil {
+		return resp.Error
+	}
+	helper.HandleDownloadData(b.Log, rmsg, finfo.Name, rmsg.Text, url, &data, b.General)
+	return nil
+}
+
+func (b *Bmattermost) handleMatter() {
+	messages := make(chan *config.Message)
+	if b.GetString("WebhookBindAddress") != "" {
+		b.Log.Debugf("Choosing webhooks based receiving")
+		go b.handleMatterHook(messages)
+	} else {
+		if b.GetString("Token") != "" {
+			b.Log.Debugf("Choosing token based receiving")
+		} else {
+			b.Log.Debugf("Choosing login/password based receiving")
+		}
+		go b.handleMatterClient(messages)
+	}
+	var ok bool
+	for message := range messages {
+		message.Avatar = helper.GetAvatar(b.avatarMap, message.UserID, b.General)
+		message.Account = b.Account
+		message.Text, ok = b.replaceAction(message.Text)
+		if ok {
+			message.Event = config.EventUserAction
+		}
+		b.Log.Debugf("<= Sending message from %s on %s to gateway", message.Username, b.Account)
+		b.Log.Debugf("<= Message is %#v", message)
+		b.Remote <- *message
+	}
+}
+
+func (b *Bmattermost) handleMatterClient(messages chan *config.Message) {
+	for message := range b.mc.MessageChan {
+		b.Log.Debugf("%#v", message.Raw.Data)
+
+		if b.skipMessage(message) {
+			b.Log.Debugf("Skipped message: %#v", message)
+			continue
+		}
+
+		// only download avatars if we have a place to upload them (configured mediaserver)
+		if b.General.MediaServerUpload != "" || b.General.MediaDownloadPath != "" {
+			b.handleDownloadAvatar(message.UserID, message.Channel)
+		}
+
+		b.Log.Debugf("== Receiving event %#v", message)
+
+		rmsg := &config.Message{
+			Username: message.Username,
+			UserID:   message.UserID,
+			Channel:  message.Channel,
+			Text:     message.Text,
+			ID:       message.Post.Id,
+			ParentID: message.Post.ParentId,
+			Extra:    make(map[string][]interface{}),
+		}
+
+		// handle mattermost post properties (override username and attachments)
+		b.handleProps(rmsg, message)
+
+		// create a text for bridges that don't support native editing
+		if message.Raw.Event == model.WEBSOCKET_EVENT_POST_EDITED && !b.GetBool("EditDisable") {
+			rmsg.Text = message.Text + b.GetString("EditSuffix")
+		}
+
+		if message.Raw.Event == model.WEBSOCKET_EVENT_POST_DELETED {
+			rmsg.Event = config.EventMsgDelete
+		}
+
+		for _, id := range message.Post.FileIds {
+			err := b.handleDownloadFile(rmsg, id)
+			if err != nil {
+				b.Log.Errorf("download failed: %s", err)
+			}
+		}
+
+		// Use nickname instead of username if defined
+		if nick := b.mc.GetNickName(rmsg.UserID); nick != "" {
+			rmsg.Username = nick
+		}
+
+		messages <- rmsg
+	}
+}
+
+func (b *Bmattermost) handleMatterHook(messages chan *config.Message) {
+	for {
+		message := b.mh.Receive()
+		b.Log.Debugf("Receiving from matterhook %#v", message)
+		messages <- &config.Message{
+			UserID:   message.UserID,
+			Username: message.UserName,
+			Text:     message.Text,
+			Channel:  message.ChannelName,
+		}
+	}
+}
+
+// handleUploadFile handles native upload of files
+func (b *Bmattermost) handleUploadFile(msg *config.Message) (string, error) {
+	var err error
+	var res, id string
+	channelID := b.mc.GetChannelId(msg.Channel, b.TeamID)
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		id, err = b.mc.UploadFile(*fi.Data, channelID, fi.Name)
+		if err != nil {
+			return "", err
+		}
+		msg.Text = fi.Comment
+		if b.GetBool("PrefixMessagesWithNick") {
+			msg.Text = msg.Username + msg.Text
+		}
+		res, err = b.mc.PostMessageWithFiles(channelID, msg.Text, msg.ParentID, []string{id})
+	}
+	return res, err
+}
+
+func (b *Bmattermost) handleProps(rmsg *config.Message, message *matterclient.Message) {
+	props := message.Post.Props
+	if props == nil {
+		return
+	}
+	if _, ok := props["override_username"].(string); ok {
+		rmsg.Username = props["override_username"].(string)
+	}
+	if _, ok := props["attachments"].([]interface{}); ok {
+		rmsg.Extra["attachments"] = props["attachments"].([]interface{})
+		if rmsg.Text == "" {
+			for _, attachment := range rmsg.Extra["attachments"] {
+				attach := attachment.(map[string]interface{})
+				if attach["text"].(string) != "" {
+					rmsg.Text += attach["text"].(string)
+					continue
+				}
+				if attach["fallback"].(string) != "" {
+					rmsg.Text += attach["fallback"].(string)
+				}
+			}
+		}
+	}
+}

bridge/mattermost/helpers.go

@@ -0,0 +1,218 @@
+package bmattermost
+
+import (
+	"strings"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/42wim/matterbridge/matterclient"
+	"github.com/42wim/matterbridge/matterhook"
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (b *Bmattermost) doConnectWebhookBind() error {
+	switch {
+	case b.GetString("WebhookURL") != "":
+		b.Log.Info("Connecting using webhookurl (sending) and webhookbindaddress (receiving)")
+		b.mh = matterhook.New(b.GetString("WebhookURL"),
+			matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"),
+				BindAddress: b.GetString("WebhookBindAddress")})
+	case b.GetString("Token") != "":
+		b.Log.Info("Connecting using token (sending)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+	case b.GetString("Login") != "":
+		b.Log.Info("Connecting using login/password (sending)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+	default:
+		b.Log.Info("Connecting using webhookbindaddress (receiving)")
+		b.mh = matterhook.New(b.GetString("WebhookURL"),
+			matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"),
+				BindAddress: b.GetString("WebhookBindAddress")})
+	}
+	return nil
+}
+
+func (b *Bmattermost) doConnectWebhookURL() error {
+	b.Log.Info("Connecting using webhookurl (sending)")
+	b.mh = matterhook.New(b.GetString("WebhookURL"),
+		matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"),
+			DisableServer: true})
+	if b.GetString("Token") != "" {
+		b.Log.Info("Connecting using token (receiving)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+	} else if b.GetString("Login") != "" {
+		b.Log.Info("Connecting using login/password (receiving)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (b *Bmattermost) apiLogin() error {
+	password := b.GetString("Password")
+	if b.GetString("Token") != "" {
+		password = "token=" + b.GetString("Token")
+	}
+
+	b.mc = matterclient.New(b.GetString("Login"), password, b.GetString("Team"), b.GetString("Server"))
+	if b.GetBool("debug") {
+		b.mc.SetLogLevel("debug")
+	}
+	b.mc.SkipTLSVerify = b.GetBool("SkipTLSVerify")
+	b.mc.NoTLS = b.GetBool("NoTLS")
+	b.Log.Infof("Connecting %s (team: %s) on %s", b.GetString("Login"), b.GetString("Team"), b.GetString("Server"))
+	err := b.mc.Login()
+	if err != nil {
+		return err
+	}
+	b.Log.Info("Connection succeeded")
+	b.TeamID = b.mc.GetTeamId()
+	go b.mc.WsReceiver()
+	go b.mc.StatusLoop()
+	return nil
+}
+
+// replaceAction replace the message with the correct action (/me) code
+func (b *Bmattermost) replaceAction(text string) (string, bool) {
+	if strings.HasPrefix(text, "*") && strings.HasSuffix(text, "*") {
+		return strings.Replace(text, "*", "", -1), true
+	}
+	return text, false
+}
+
+func (b *Bmattermost) cacheAvatar(msg *config.Message) (string, error) {
+	fi := msg.Extra["file"][0].(config.FileInfo)
+	/* if we have a sha we have successfully uploaded the file to the media server,
+	so we can now cache the sha */
+	if fi.SHA != "" {
+		b.Log.Debugf("Added %s to %s in avatarMap", fi.SHA, msg.UserID)
+		b.avatarMap[msg.UserID] = fi.SHA
+	}
+	return "", nil
+}
+
+// sendWebhook uses the configured WebhookURL to send the message
+func (b *Bmattermost) sendWebhook(msg config.Message) (string, error) {
+	// skip events
+	if msg.Event != "" {
+		return "", nil
+	}
+
+	if b.GetBool("PrefixMessagesWithNick") {
+		msg.Text = msg.Username + msg.Text
+	}
+	if msg.Extra != nil {
+		// this sends a message only if we received a config.EVENT_FILE_FAILURE_SIZE
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			rmsg := rmsg // scopelint
+			iconURL := config.GetIconURL(&rmsg, b.GetString("iconurl"))
+			matterMessage := matterhook.OMessage{
+				IconURL:  iconURL,
+				Channel:  rmsg.Channel,
+				UserName: rmsg.Username,
+				Text:     rmsg.Text,
+				Props:    make(map[string]interface{}),
+			}
+			matterMessage.Props["matterbridge_"+b.uuid] = true
+			if err := b.mh.Send(matterMessage); err != nil {
+				b.Log.Errorf("sendWebhook failed: %s ", err)
+			}
+		}
+
+		// webhook doesn't support file uploads, so we add the url manually
+		if len(msg.Extra["file"]) > 0 {
+			for _, f := range msg.Extra["file"] {
+				fi := f.(config.FileInfo)
+				if fi.URL != "" {
+					msg.Text += fi.URL
+				}
+			}
+		}
+	}
+
+	iconURL := config.GetIconURL(&msg, b.GetString("iconurl"))
+	matterMessage := matterhook.OMessage{
+		IconURL:  iconURL,
+		Channel:  msg.Channel,
+		UserName: msg.Username,
+		Text:     msg.Text,
+		Props:    make(map[string]interface{}),
+	}
+	if msg.Avatar != "" {
+		matterMessage.IconURL = msg.Avatar
+	}
+	matterMessage.Props["matterbridge_"+b.uuid] = true
+	err := b.mh.Send(matterMessage)
+	if err != nil {
+		b.Log.Info(err)
+		return "", err
+	}
+	return "", nil
+}
+
+// skipMessages returns true if this message should not be handled
+func (b *Bmattermost) skipMessage(message *matterclient.Message) bool {
+	// Handle join/leave
+	if message.Type == "system_join_leave" ||
+		message.Type == "system_join_channel" ||
+		message.Type == "system_leave_channel" {
+		if b.GetBool("nosendjoinpart") {
+			return true
+		}
+		b.Log.Debugf("Sending JOIN_LEAVE event from %s to gateway", b.Account)
+		b.Remote <- config.Message{
+			Username: "system",
+			Text:     message.Text,
+			Channel:  message.Channel,
+			Account:  b.Account,
+			Event:    config.EventJoinLeave,
+		}
+		return true
+	}
+
+	// Handle edited messages
+	if (message.Raw.Event == model.WEBSOCKET_EVENT_POST_EDITED) && b.GetBool("EditDisable") {
+		return true
+	}
+
+	// Ignore messages sent from matterbridge
+	if message.Post.Props != nil {
+		if _, ok := message.Post.Props["matterbridge_"+b.uuid].(bool); ok {
+			b.Log.Debugf("sent by matterbridge, ignoring")
+			return true
+		}
+	}
+
+	// Ignore messages sent from a user logged in as the bot
+	if b.mc.User.Username == message.Username {
+		return true
+	}
+
+	// if the message has reactions don't repost it (for now, until we can correlate reaction with message)
+	if message.Post.HasReactions {
+		return true
+	}
+
+	// ignore messages from other teams than ours
+	if message.Raw.Data["team_id"].(string) != b.TeamID {
+		return true
+	}
+
+	// only handle posted, edited or deleted events
+	if !(message.Raw.Event == "posted" || message.Raw.Event == model.WEBSOCKET_EVENT_POST_EDITED ||
+		message.Raw.Event == model.WEBSOCKET_EVENT_POST_DELETED) {
+		return true
+	}
+	return false
+}

bridge/mattermost/mattermost.go

@@ -1,60 +1,31 @@
 package bmattermost
 
 import (
+	"errors"
+	"fmt"
+
+	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
 	"github.com/42wim/matterbridge/matterclient"
 	"github.com/42wim/matterbridge/matterhook"
-	log "github.com/Sirupsen/logrus"
-	"strings"
+	"github.com/rs/xid"
 )
 
-//type Bridge struct {
-type MMhook struct {
-	mh *matterhook.Client
-}
-
-type MMapi struct {
-	mc            *matterclient.MMClient
-	mmMap         map[string]string
-	mmIgnoreNicks []string
-}
-
-type MMMessage struct {
-	Text     string
-	Channel  string
-	Username string
-}
-
 type Bmattermost struct {
-	MMhook
-	MMapi
-	*config.Config
-	Plus   bool
-	Remote chan config.Message
+	mh     *matterhook.Client
+	mc     *matterclient.MMClient
+	uuid   string
+	TeamID string
+	*bridge.Config
+	avatarMap map[string]string
 }
 
-type FancyLog struct {
-	irc  *log.Entry
-	mm   *log.Entry
-	xmpp *log.Entry
-}
+const mattermostPlugin = "mattermost.plugin"
 
-var flog FancyLog
-
-const Legacy = "legacy"
-
-func init() {
-	flog.irc = log.WithFields(log.Fields{"module": "irc"})
-	flog.mm = log.WithFields(log.Fields{"module": "mattermost"})
-	flog.xmpp = log.WithFields(log.Fields{"module": "xmpp"})
-}
-
-func New(cfg *config.Config, c chan config.Message) *Bmattermost {
-	b := &Bmattermost{}
-	b.Config = cfg
-	b.Remote = c
-	b.Plus = cfg.General.Plus
-	b.mmMap = make(map[string]string)
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &Bmattermost{Config: cfg, avatarMap: make(map[string]string)}
+	b.uuid = xid.New().String()
 	return b
 }
 
@@ -63,112 +34,115 @@ func (b *Bmattermost) Command(cmd string) string {
 }
 
 func (b *Bmattermost) Connect() error {
-	if !b.Plus {
-		b.mh = matterhook.New(b.Config.Mattermost.URL,
-			matterhook.Config{InsecureSkipVerify: b.Config.Mattermost.SkipTLSVerify,
-				BindAddress: b.Config.Mattermost.BindAddress})
-	} else {
-		b.mc = matterclient.New(b.Config.Mattermost.Login, b.Config.Mattermost.Password,
-			b.Config.Mattermost.Team, b.Config.Mattermost.Server)
-		b.mc.SkipTLSVerify = b.Config.Mattermost.SkipTLSVerify
-		b.mc.NoTLS = b.Config.Mattermost.NoTLS
-		flog.mm.Infof("Trying login %s (team: %s) on %s", b.Config.Mattermost.Login, b.Config.Mattermost.Team, b.Config.Mattermost.Server)
-		err := b.mc.Login()
-		if err != nil {
-			return err
-		}
-		flog.mm.Info("Login ok")
-		b.mc.JoinChannel(b.Config.Mattermost.Channel)
-		for _, val := range b.Config.Channel {
-			b.mc.JoinChannel(val.Mattermost)
-		}
-		go b.mc.WsReceiver()
-	}
-	go b.handleMatter()
-	return nil
-}
-
-func (b *Bmattermost) Name() string {
-	return "mattermost"
-}
-
-func (b *Bmattermost) Send(msg config.Message) error {
-	flog.mm.Infof("mattermost send %#v", msg)
-	if msg.Origin != "mattermost" {
-		return b.SendType(msg.Username, msg.Text, msg.Channel, "")
-	}
-	return nil
-}
-
-func (b *Bmattermost) SendType(nick string, message string, channel string, mtype string) error {
-	if b.Config.Mattermost.PrefixMessagesWithNick {
-		/*if IsMarkup(message) {
-			message = nick + "\n\n" + message
-		} else {
-		*/
-		message = nick + " " + message
-		//}
-	}
-	if !b.Plus {
-		matterMessage := matterhook.OMessage{IconURL: b.Config.Mattermost.IconURL}
-		matterMessage.Channel = channel
-		matterMessage.UserName = nick
-		matterMessage.Type = mtype
-		matterMessage.Text = message
-		err := b.mh.Send(matterMessage)
-		if err != nil {
-			flog.mm.Info(err)
-			return err
-		}
-		flog.mm.Debug("->mattermost channel: ", channel, " ", message)
+	if b.Account == mattermostPlugin {
 		return nil
 	}
-	flog.mm.Debug("->mattermost channel plus: ", channel, " ", message)
-	b.mc.PostMessage(b.mc.GetChannelId(channel, ""), message)
+	if b.GetString("WebhookBindAddress") != "" {
+		if err := b.doConnectWebhookBind(); err != nil {
+			return err
+		}
+		go b.handleMatter()
+		return nil
+	}
+	switch {
+	case b.GetString("WebhookURL") != "":
+		if err := b.doConnectWebhookURL(); err != nil {
+			return err
+		}
+		go b.handleMatter()
+		return nil
+	case b.GetString("Token") != "":
+		b.Log.Info("Connecting using token (sending and receiving)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+		go b.handleMatter()
+	case b.GetString("Login") != "":
+		b.Log.Info("Connecting using login/password (sending and receiving)")
+		err := b.apiLogin()
+		if err != nil {
+			return err
+		}
+		go b.handleMatter()
+	}
+	if b.GetString("WebhookBindAddress") == "" && b.GetString("WebhookURL") == "" &&
+		b.GetString("Login") == "" && b.GetString("Token") == "" {
+		return errors.New("no connection method found. See that you have WebhookBindAddress, WebhookURL or Token/Login/Password/Server/Team configured")
+	}
 	return nil
 }
 
-func (b *Bmattermost) handleMatter() {
-	flog.mm.Infof("Choosing API based Mattermost connection: %t", b.Plus)
-	mchan := make(chan *MMMessage)
-	if b.Plus {
-		go b.handleMatterClient(mchan)
-	} else {
-		go b.handleMatterHook(mchan)
-	}
-	flog.mm.Info("Start listening for Mattermost messages")
-	for message := range mchan {
-		texts := strings.Split(message.Text, "\n")
-		for _, text := range texts {
-			flog.mm.Debug("Sending message from " + message.Username + " to " + message.Channel)
-			b.Remote <- config.Message{Text: text, Username: message.Username, Channel: message.Channel, Origin: "mattermost"}
-		}
-	}
+func (b *Bmattermost) Disconnect() error {
+	return nil
 }
 
-func (b *Bmattermost) handleMatterClient(mchan chan *MMMessage) {
-	for message := range b.mc.MessageChan {
-		// do not post our own messages back to irc
-		if message.Raw.Event == "posted" && b.mc.User.Username != message.Username {
-			flog.mm.Debugf("receiving from matterclient %#v", message)
-			flog.mm.Debugf("receiving from matterclient %#v", message.Raw)
-			m := &MMMessage{}
-			m.Username = message.Username
-			m.Channel = message.Channel
-			m.Text = message.Text
-			mchan <- m
-		}
+func (b *Bmattermost) JoinChannel(channel config.ChannelInfo) error {
+	if b.Account == mattermostPlugin {
+		return nil
 	}
+	// we can only join channels using the API
+	if b.GetString("WebhookURL") == "" && b.GetString("WebhookBindAddress") == "" {
+		id := b.mc.GetChannelId(channel.Name, b.TeamID)
+		if id == "" {
+			return fmt.Errorf("Could not find channel ID for channel %s", channel.Name)
+		}
+		return b.mc.JoinChannel(id)
+	}
+	return nil
 }
 
-func (b *Bmattermost) handleMatterHook(mchan chan *MMMessage) {
-	for {
-		message := b.mh.Receive()
-		flog.mm.Debugf("receiving from matterhook %#v", message)
-		m := &MMMessage{}
-		m.Username = message.UserName
-		m.Text = message.Text
-		m.Channel = message.ChannelName
-		mchan <- m
+func (b *Bmattermost) Send(msg config.Message) (string, error) {
+	if b.Account == mattermostPlugin {
+		return "", nil
 	}
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// Make a action /me of the message
+	if msg.Event == config.EventUserAction {
+		msg.Text = "*" + msg.Text + "*"
+	}
+
+	// map the file SHA to our user (caches the avatar)
+	if msg.Event == config.EventAvatarDownload {
+		return b.cacheAvatar(&msg)
+	}
+
+	// Use webhook to send the message
+	if b.GetString("WebhookURL") != "" {
+		return b.sendWebhook(msg)
+	}
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			return "", nil
+		}
+		return msg.ID, b.mc.DeleteMessage(msg.ID)
+	}
+
+	// Upload a file if it exists
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			if _, err := b.mc.PostMessage(b.mc.GetChannelId(rmsg.Channel, b.TeamID), rmsg.Username+rmsg.Text, msg.ParentID); err != nil {
+				b.Log.Errorf("PostMessage failed: %s", err)
+			}
+		}
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg)
+		}
+	}
+
+	// Prepend nick if configured
+	if b.GetBool("PrefixMessagesWithNick") {
+		msg.Text = msg.Username + msg.Text
+	}
+
+	// Edit message if we have an ID
+	if msg.ID != "" {
+		return b.mc.EditMessage(msg.ID, msg.Text)
+	}
+
+	// Post normal message
+	return b.mc.PostMessage(b.mc.GetChannelId(msg.Channel, b.TeamID), msg.Text, msg.ParentID)
 }

bridge/rocketchat/rocketchat.go

@@ -0,0 +1,92 @@
+package brocketchat
+
+import (
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/42wim/matterbridge/hook/rockethook"
+	"github.com/42wim/matterbridge/matterhook"
+)
+
+type Brocketchat struct {
+	mh *matterhook.Client
+	rh *rockethook.Client
+	*bridge.Config
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	return &Brocketchat{Config: cfg}
+}
+
+func (b *Brocketchat) Command(cmd string) string {
+	return ""
+}
+
+func (b *Brocketchat) Connect() error {
+	b.Log.Info("Connecting webhooks")
+	b.mh = matterhook.New(b.GetString("WebhookURL"),
+		matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"),
+			DisableServer: true})
+	b.rh = rockethook.New(b.GetString("WebhookURL"), rockethook.Config{BindAddress: b.GetString("WebhookBindAddress")})
+	go b.handleRocketHook()
+	return nil
+}
+
+func (b *Brocketchat) Disconnect() error {
+	return nil
+
+}
+
+func (b *Brocketchat) JoinChannel(channel config.ChannelInfo) error {
+	return nil
+}
+
+func (b *Brocketchat) Send(msg config.Message) (string, error) {
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+	b.Log.Debugf("=> Receiving %#v", msg)
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			rmsg := rmsg // scopelint
+			iconURL := config.GetIconURL(&rmsg, b.GetString("iconurl"))
+			matterMessage := matterhook.OMessage{IconURL: iconURL, Channel: rmsg.Channel, UserName: rmsg.Username, Text: rmsg.Text}
+			b.mh.Send(matterMessage)
+		}
+		if len(msg.Extra["file"]) > 0 {
+			for _, f := range msg.Extra["file"] {
+				fi := f.(config.FileInfo)
+				if fi.URL != "" {
+					msg.Text += fi.URL
+				}
+			}
+		}
+	}
+
+	iconURL := config.GetIconURL(&msg, b.GetString("iconurl"))
+	matterMessage := matterhook.OMessage{IconURL: iconURL}
+	matterMessage.Channel = msg.Channel
+	matterMessage.UserName = msg.Username
+	matterMessage.Type = ""
+	matterMessage.Text = msg.Text
+	err := b.mh.Send(matterMessage)
+	if err != nil {
+		b.Log.Info(err)
+		return "", err
+	}
+	return "", nil
+}
+
+func (b *Brocketchat) handleRocketHook() {
+	for {
+		message := b.rh.Receive()
+		b.Log.Debugf("Receiving from rockethook %#v", message)
+		// do not loop
+		if message.UserName == b.GetString("Nick") {
+			continue
+		}
+		b.Log.Debugf("<= Sending message from %s on %s to gateway", message.UserName, b.Account)
+		b.Remote <- config.Message{Text: message.Text, Username: message.UserName, Channel: message.ChannelName, Account: b.Account, UserID: message.UserID}
+	}
+}

bridge/slack/handlers.go

@@ -0,0 +1,376 @@
+package bslack
+
+import (
+	"fmt"
+	"html"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/nlopes/slack"
+)
+
+func (b *Bslack) handleSlack() {
+	messages := make(chan *config.Message)
+	if b.GetString(incomingWebhookConfig) != "" {
+		b.Log.Debugf("Choosing webhooks based receiving")
+		go b.handleMatterHook(messages)
+	} else {
+		b.Log.Debugf("Choosing token based receiving")
+		go b.handleSlackClient(messages)
+	}
+	time.Sleep(time.Second)
+	b.Log.Debug("Start listening for Slack messages")
+	for message := range messages {
+		if message.Event != config.EventUserTyping {
+			b.Log.Debugf("<= Sending message from %s on %s to gateway", message.Username, b.Account)
+		}
+
+		// cleanup the message
+		message.Text = b.replaceMention(message.Text)
+		message.Text = b.replaceVariable(message.Text)
+		message.Text = b.replaceChannel(message.Text)
+		message.Text = b.replaceURL(message.Text)
+		message.Text = html.UnescapeString(message.Text)
+
+		// Add the avatar
+		message.Avatar = b.getAvatar(message.UserID)
+
+		b.Log.Debugf("<= Message is %#v", message)
+		b.Remote <- *message
+	}
+}
+
+func (b *Bslack) handleSlackClient(messages chan *config.Message) {
+	for msg := range b.rtm.IncomingEvents {
+		if msg.Type != sUserTyping && msg.Type != sLatencyReport {
+			b.Log.Debugf("== Receiving event %#v", msg.Data)
+		}
+		switch ev := msg.Data.(type) {
+		case *slack.UserTypingEvent:
+			if !b.GetBool("ShowUserTyping") {
+				continue
+			}
+			rmsg, err := b.handleTypingEvent(ev)
+			if err != nil {
+				b.Log.Errorf("%#v", err)
+				continue
+			}
+
+			messages <- rmsg
+		case *slack.MessageEvent:
+			if b.skipMessageEvent(ev) {
+				b.Log.Debugf("Skipped message: %#v", ev)
+				continue
+			}
+			rmsg, err := b.handleMessageEvent(ev)
+			if err != nil {
+				b.Log.Errorf("%#v", err)
+				continue
+			}
+			messages <- rmsg
+		case *slack.OutgoingErrorEvent:
+			b.Log.Debugf("%#v", ev.Error())
+		case *slack.ChannelJoinedEvent:
+			// When we join a channel we update the full list of users as
+			// well as the information for the channel that we joined as this
+			// should now tell that we are a member of it.
+			b.channelsMutex.Lock()
+			b.channelsByID[ev.Channel.ID] = &ev.Channel
+			b.channelsByName[ev.Channel.Name] = &ev.Channel
+			b.channelsMutex.Unlock()
+		case *slack.ConnectedEvent:
+			b.si = ev.Info
+			b.populateChannels(true)
+			b.populateUsers(true)
+		case *slack.InvalidAuthEvent:
+			b.Log.Fatalf("Invalid Token %#v", ev)
+		case *slack.ConnectionErrorEvent:
+			b.Log.Errorf("Connection failed %#v %#v", ev.Error(), ev.ErrorObj)
+		case *slack.MemberJoinedChannelEvent:
+			b.populateUser(ev.User)
+		case *slack.LatencyReport:
+			continue
+		default:
+			b.Log.Debugf("Unhandled incoming event: %T", ev)
+		}
+	}
+}
+
+func (b *Bslack) handleMatterHook(messages chan *config.Message) {
+	for {
+		message := b.mh.Receive()
+		b.Log.Debugf("receiving from matterhook (slack) %#v", message)
+		if message.UserName == "slackbot" {
+			continue
+		}
+		messages <- &config.Message{
+			Username: message.UserName,
+			Text:     message.Text,
+			Channel:  message.ChannelName,
+		}
+	}
+}
+
+// skipMessageEvent skips event that need to be skipped :-)
+func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool {
+	switch ev.SubType {
+	case sChannelLeave, sChannelJoin:
+		return b.GetBool(noSendJoinConfig)
+	case sPinnedItem, sUnpinnedItem:
+		return true
+	case sChannelTopic, sChannelPurpose:
+		// Skip the event if our bot/user account changed the topic/purpose
+		if ev.User == b.si.User.ID {
+			return true
+		}
+	}
+
+	// Skip any messages that we made ourselves or from 'slackbot' (see #527).
+	if ev.Username == sSlackBotUser ||
+		(b.rtm != nil && ev.Username == b.si.User.Name) ||
+		(len(ev.Attachments) > 0 && ev.Attachments[0].CallbackID == "matterbridge_"+b.uuid) {
+		return true
+	}
+
+	// It seems ev.SubMessage.Edited == nil when slack unfurls.
+	// Do not forward these messages. See Github issue #266.
+	if ev.SubMessage != nil &&
+		ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp &&
+		ev.SubMessage.Edited == nil {
+		return true
+	}
+
+	if len(ev.Files) > 0 {
+		return b.filesCached(ev.Files)
+	}
+	return false
+}
+
+func (b *Bslack) filesCached(files []slack.File) bool {
+	for i := range files {
+		if !b.fileCached(&files[i]) {
+			return false
+		}
+	}
+	return true
+}
+
+// handleMessageEvent handles the message events. Together with any called sub-methods,
+// this method implements the following event processing pipeline:
+//
+// 1. Check if the message should be ignored.
+//    NOTE: This is not actually part of the method below but is done just before it
+//          is called via the 'skipMessageEvent()' method.
+// 2. Populate the Matterbridge message that will be sent to the router based on the
+//    received event and logic that is common to all events that are not skipped.
+// 3. Detect and handle any message that is "status" related (think join channel, etc.).
+//    This might result in an early exit from the pipeline and passing of the
+//    pre-populated message to the Matterbridge router.
+// 4. Handle the specific case of messages that edit existing messages depending on
+//    configuration.
+// 5. Handle any attachments of the received event.
+// 6. Check that the Matterbridge message that we end up with after at the end of the
+//    pipeline is valid before sending it to the Matterbridge router.
+func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, error) {
+	rmsg, err := b.populateReceivedMessage(ev)
+	if err != nil {
+		return nil, err
+	}
+
+	// Handle some message types early.
+	if b.handleStatusEvent(ev, rmsg) {
+		return rmsg, nil
+	}
+
+	b.handleAttachments(ev, rmsg)
+
+	// Verify that we have the right information and the message
+	// is well-formed before sending it out to the router.
+	if len(ev.Files) == 0 && (rmsg.Text == "" || rmsg.Username == "") {
+		if ev.BotID != "" {
+			// This is probably a webhook we couldn't resolve.
+			return nil, fmt.Errorf("message handling resulted in an empty bot message (probably an incoming webhook we couldn't resolve): %#v", ev)
+		}
+		return nil, fmt.Errorf("message handling resulted in an empty message: %#v", ev)
+	}
+	return rmsg, nil
+}
+
+func (b *Bslack) handleStatusEvent(ev *slack.MessageEvent, rmsg *config.Message) bool {
+	switch ev.SubType {
+	case sChannelJoined, sMemberJoined:
+		// There's no further processing needed on channel events
+		// so we return 'true'.
+		return true
+	case sChannelJoin, sChannelLeave:
+		rmsg.Username = sSystemUser
+		rmsg.Event = config.EventJoinLeave
+	case sChannelTopic, sChannelPurpose:
+		b.populateChannels(false)
+		rmsg.Event = config.EventTopicChange
+	case sMessageChanged:
+		rmsg.Text = ev.SubMessage.Text
+		// handle deleted thread starting messages
+		if ev.SubMessage.Text == "This message was deleted." {
+			rmsg.Event = config.EventMsgDelete
+			return true
+		}
+	case sMessageDeleted:
+		rmsg.Text = config.EventMsgDelete
+		rmsg.Event = config.EventMsgDelete
+		rmsg.ID = ev.DeletedTimestamp
+		// If a message is being deleted we do not need to process
+		// the event any further so we return 'true'.
+		return true
+	case sMeMessage:
+		rmsg.Event = config.EventUserAction
+	}
+	return false
+}
+
+func (b *Bslack) handleAttachments(ev *slack.MessageEvent, rmsg *config.Message) {
+	// File comments are set by the system (because there is no username given).
+	if ev.SubType == sFileComment {
+		rmsg.Username = sSystemUser
+	}
+
+	// See if we have some text in the attachments.
+	if rmsg.Text == "" {
+		for _, attach := range ev.Attachments {
+			if attach.Text != "" {
+				if attach.Title != "" {
+					rmsg.Text = attach.Title + "\n"
+				}
+				rmsg.Text += attach.Text
+			} else {
+				rmsg.Text = attach.Fallback
+			}
+		}
+	}
+
+	// Save the attachments, so that we can send them to other slack (compatible) bridges.
+	if len(ev.Attachments) > 0 {
+		rmsg.Extra[sSlackAttachment] = append(rmsg.Extra[sSlackAttachment], ev.Attachments)
+	}
+
+	// If we have files attached, download them (in memory) and put a pointer to it in msg.Extra.
+	for i := range ev.Files {
+		if err := b.handleDownloadFile(rmsg, &ev.Files[i], false); err != nil {
+			b.Log.Errorf("Could not download incoming file: %#v", err)
+		}
+	}
+}
+
+func (b *Bslack) handleTypingEvent(ev *slack.UserTypingEvent) (*config.Message, error) {
+	channelInfo, err := b.getChannelByID(ev.Channel)
+	if err != nil {
+		return nil, err
+	}
+	return &config.Message{
+		Channel: channelInfo.Name,
+		Account: b.Account,
+		Event:   config.EventUserTyping,
+	}, nil
+}
+
+// handleDownloadFile handles file download
+func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File, retry bool) error {
+	if b.fileCached(file) {
+		return nil
+	}
+	// Check that the file is neither too large nor blacklisted.
+	if err := helper.HandleDownloadSize(b.Log, rmsg, file.Name, int64(file.Size), b.General); err != nil {
+		b.Log.WithError(err).Infof("Skipping download of incoming file.")
+		return nil
+	}
+
+	// Actually download the file.
+	data, err := helper.DownloadFileAuth(file.URLPrivateDownload, "Bearer "+b.GetString(tokenConfig))
+	if err != nil {
+		return fmt.Errorf("download %s failed %#v", file.URLPrivateDownload, err)
+	}
+
+	if len(*data) != file.Size && !retry {
+		b.Log.Debugf("Data size (%d) is not equal to size declared (%d)\n", len(*data), file.Size)
+		time.Sleep(1 * time.Second)
+		return b.handleDownloadFile(rmsg, file, true)
+	}
+
+	// If a comment is attached to the file(s) it is in the 'Text' field of the Slack messge event
+	// and should be added as comment to only one of the files. We reset the 'Text' field to ensure
+	// that the comment is not duplicated.
+	comment := rmsg.Text
+	rmsg.Text = ""
+	helper.HandleDownloadData(b.Log, rmsg, file.Name, comment, file.URLPrivateDownload, data, b.General)
+	return nil
+}
+
+// handleGetChannelMembers handles messages containing the GetChannelMembers event
+// Sends a message to the router containing *config.ChannelMembers
+func (b *Bslack) handleGetChannelMembers(rmsg *config.Message) bool {
+	if rmsg.Event != config.EventGetChannelMembers {
+		return false
+	}
+
+	cMembers := config.ChannelMembers{}
+
+	b.channelMembersMutex.RLock()
+
+	for channelID, members := range b.channelMembers {
+		for _, member := range members {
+			channelName := ""
+			userName := ""
+			userNick := ""
+			user := b.getUser(member)
+			if user != nil {
+				userName = user.Name
+				userNick = user.Profile.DisplayName
+			}
+			channel, _ := b.getChannelByID(channelID)
+			if channel != nil {
+				channelName = channel.Name
+			}
+			cMember := config.ChannelMember{
+				Username:    userName,
+				Nick:        userNick,
+				UserID:      member,
+				ChannelID:   channelID,
+				ChannelName: channelName,
+			}
+			cMembers = append(cMembers, cMember)
+		}
+	}
+
+	b.channelMembersMutex.RUnlock()
+
+	extra := make(map[string][]interface{})
+	extra[config.EventGetChannelMembers] = append(extra[config.EventGetChannelMembers], cMembers)
+	msg := config.Message{
+		Extra:   extra,
+		Event:   config.EventGetChannelMembers,
+		Account: b.Account,
+	}
+
+	b.Log.Debugf("sending msg to remote %#v", msg)
+	b.Remote <- msg
+
+	return true
+}
+
+// fileCached implements Matterbridge's caching logic for files
+// shared via Slack.
+//
+// We consider that a file was cached if its ID was added in the last minute or
+// it's name was registered in the last 10 seconds. This ensures that an
+// identically named file but with different content will be uploaded correctly
+// (the assumption is that such name collisions will not occur within the given
+// timeframes).
+func (b *Bslack) fileCached(file *slack.File) bool {
+	if ts, ok := b.cache.Get("file" + file.ID); ok && time.Since(ts.(time.Time)) < time.Minute {
+		return true
+	} else if ts, ok = b.cache.Get("filename" + file.Name); ok && time.Since(ts.(time.Time)) < 10*time.Second {
+		return true
+	}
+	return false
+}

bridge/slack/helpers.go

@@ -0,0 +1,434 @@
+package bslack
+
+import (
+	"context"
+	"fmt"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/nlopes/slack"
+)
+
+func (b *Bslack) getUser(id string) *slack.User {
+	b.usersMutex.RLock()
+	user, ok := b.users[id]
+	b.usersMutex.RUnlock()
+	if ok {
+		return user
+	}
+	b.populateUser(id)
+	b.usersMutex.RLock()
+	defer b.usersMutex.RUnlock()
+
+	return b.users[id]
+}
+
+func (b *Bslack) getUsername(id string) string {
+	if user := b.getUser(id); user != nil {
+		if user.Profile.DisplayName != "" {
+			return user.Profile.DisplayName
+		}
+		return user.Name
+	}
+	b.Log.Warnf("Could not find user with ID '%s'", id)
+	return ""
+}
+
+func (b *Bslack) getAvatar(id string) string {
+	if user := b.getUser(id); user != nil {
+		return user.Profile.Image48
+	}
+	return ""
+}
+
+func (b *Bslack) getChannel(channel string) (*slack.Channel, error) {
+	if strings.HasPrefix(channel, "ID:") {
+		return b.getChannelByID(strings.TrimPrefix(channel, "ID:"))
+	}
+	return b.getChannelByName(channel)
+}
+
+func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
+	return b.getChannelBy(name, b.channelsByName)
+}
+
+func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
+	return b.getChannelBy(ID, b.channelsByID)
+}
+
+func (b *Bslack) getChannelBy(lookupKey string, lookupMap map[string]*slack.Channel) (*slack.Channel, error) {
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+
+	if channel, ok := lookupMap[lookupKey]; ok {
+		return channel, nil
+	}
+	return nil, fmt.Errorf("%s: channel %s not found", b.Account, lookupKey)
+}
+
+const minimumRefreshInterval = 10 * time.Second
+
+func (b *Bslack) populateUser(userID string) {
+	b.usersMutex.RLock()
+	_, exists := b.users[userID]
+	b.usersMutex.RUnlock()
+	if exists {
+		// already in cache
+		return
+	}
+
+	user, err := b.sc.GetUserInfo(userID)
+	if err != nil {
+		b.Log.Debugf("GetUserInfo failed for %v: %v", userID, err)
+		return
+	}
+
+	b.usersMutex.Lock()
+	b.users[userID] = user
+	b.usersMutex.Unlock()
+}
+
+func (b *Bslack) populateUsers(wait bool) {
+	b.refreshMutex.Lock()
+	if !wait && (time.Now().Before(b.earliestUserRefresh) || b.refreshInProgress) {
+		b.Log.Debugf("Not refreshing user list as it was done less than %v ago.",
+			minimumRefreshInterval)
+		b.refreshMutex.Unlock()
+
+		return
+	}
+	for b.refreshInProgress {
+		b.refreshMutex.Unlock()
+		time.Sleep(time.Second)
+		b.refreshMutex.Lock()
+	}
+	b.refreshInProgress = true
+	b.refreshMutex.Unlock()
+
+	newUsers := map[string]*slack.User{}
+	pagination := b.sc.GetUsersPaginated(slack.GetUsersOptionLimit(200))
+	count := 0
+	for {
+		var err error
+		pagination, err = pagination.Next(context.Background())
+		time.Sleep(time.Second)
+		if err != nil {
+			if pagination.Done(err) {
+				break
+			}
+
+			if err = b.handleRateLimit(err); err != nil {
+				b.Log.Errorf("Could not retrieve users: %#v", err)
+				return
+			}
+			continue
+		}
+
+		for i := range pagination.Users {
+			newUsers[pagination.Users[i].ID] = &pagination.Users[i]
+		}
+		b.Log.Debugf("getting %d users", len(pagination.Users))
+		count++
+		// more > 2000 users, slack will complain and ratelimit. break
+		if count > 10 {
+			b.Log.Info("Large slack detected > 2000 users, skipping loading complete userlist.")
+			break
+		}
+	}
+
+	b.usersMutex.Lock()
+	defer b.usersMutex.Unlock()
+	b.users = newUsers
+
+	b.refreshMutex.Lock()
+	defer b.refreshMutex.Unlock()
+	b.earliestUserRefresh = time.Now().Add(minimumRefreshInterval)
+	b.refreshInProgress = false
+}
+
+func (b *Bslack) populateChannels(wait bool) {
+	b.refreshMutex.Lock()
+	if !wait && (time.Now().Before(b.earliestChannelRefresh) || b.refreshInProgress) {
+		b.Log.Debugf("Not refreshing channel list as it was done less than %v seconds ago.",
+			minimumRefreshInterval)
+		b.refreshMutex.Unlock()
+		return
+	}
+	for b.refreshInProgress {
+		b.refreshMutex.Unlock()
+		time.Sleep(time.Second)
+		b.refreshMutex.Lock()
+	}
+	b.refreshInProgress = true
+	b.refreshMutex.Unlock()
+
+	newChannelsByID := map[string]*slack.Channel{}
+	newChannelsByName := map[string]*slack.Channel{}
+	newChannelMembers := make(map[string][]string)
+
+	// We only retrieve public and private channels, not IMs
+	// and MPIMs as those do not have a channel name.
+	queryParams := &slack.GetConversationsParameters{
+		ExcludeArchived: "true",
+		Types:           []string{"public_channel,private_channel"},
+	}
+	for {
+		channels, nextCursor, err := b.sc.GetConversations(queryParams)
+		if err != nil {
+			if err = b.handleRateLimit(err); err != nil {
+				b.Log.Errorf("Could not retrieve channels: %#v", err)
+				return
+			}
+			continue
+		}
+
+		for i := range channels {
+			newChannelsByID[channels[i].ID] = &channels[i]
+			newChannelsByName[channels[i].Name] = &channels[i]
+			// also find all the members in every channel
+			// comment for now, issues on big slacks
+			/*
+				members, err := b.getUsersInConversation(channels[i].ID)
+				if err != nil {
+					if err = b.handleRateLimit(err); err != nil {
+						b.Log.Errorf("Could not retrieve channel members: %#v", err)
+						return
+					}
+					continue
+				}
+				newChannelMembers[channels[i].ID] = members
+			*/
+		}
+
+		if nextCursor == "" {
+			break
+		}
+		queryParams.Cursor = nextCursor
+	}
+
+	b.channelsMutex.Lock()
+	defer b.channelsMutex.Unlock()
+	b.channelsByID = newChannelsByID
+	b.channelsByName = newChannelsByName
+
+	b.channelMembersMutex.Lock()
+	defer b.channelMembersMutex.Unlock()
+	b.channelMembers = newChannelMembers
+
+	b.refreshMutex.Lock()
+	defer b.refreshMutex.Unlock()
+	b.earliestChannelRefresh = time.Now().Add(minimumRefreshInterval)
+	b.refreshInProgress = false
+}
+
+// populateReceivedMessage shapes the initial Matterbridge message that we will forward to the
+// router before we apply message-dependent modifications.
+func (b *Bslack) populateReceivedMessage(ev *slack.MessageEvent) (*config.Message, error) {
+	// Use our own func because rtm.GetChannelInfo doesn't work for private channels.
+	channel, err := b.getChannelByID(ev.Channel)
+	if err != nil {
+		return nil, err
+	}
+
+	rmsg := &config.Message{
+		Text:     ev.Text,
+		Channel:  channel.Name,
+		Account:  b.Account,
+		ID:       ev.Timestamp,
+		Extra:    make(map[string][]interface{}),
+		ParentID: ev.ThreadTimestamp,
+		Protocol: b.Protocol,
+	}
+	if b.useChannelID {
+		rmsg.Channel = "ID:" + channel.ID
+	}
+
+	// Handle 'edit' messages.
+	if ev.SubMessage != nil && !b.GetBool(editDisableConfig) {
+		rmsg.ID = ev.SubMessage.Timestamp
+		if ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp {
+			b.Log.Debugf("SubMessage %#v", ev.SubMessage)
+			rmsg.Text = ev.SubMessage.Text + b.GetString(editSuffixConfig)
+		}
+	}
+
+	if err = b.populateMessageWithUserInfo(ev, rmsg); err != nil {
+		return nil, err
+	}
+	return rmsg, err
+}
+
+func (b *Bslack) populateMessageWithUserInfo(ev *slack.MessageEvent, rmsg *config.Message) error {
+	if ev.SubType == sMessageDeleted || ev.SubType == sFileComment {
+		return nil
+	}
+
+	// First, deal with bot-originating messages but only do so when not using webhooks: we
+	// would not be able to distinguish which bot would be sending them.
+	if err := b.populateMessageWithBotInfo(ev, rmsg); err != nil {
+		return err
+	}
+
+	// Second, deal with "real" users if we have the necessary information.
+	var userID string
+	switch {
+	case ev.User != "":
+		userID = ev.User
+	case ev.SubMessage != nil && ev.SubMessage.User != "":
+		userID = ev.SubMessage.User
+	default:
+		return nil
+	}
+
+	user := b.getUser(userID)
+	if user == nil {
+		return fmt.Errorf("could not find information for user with id %s", ev.User)
+	}
+
+	rmsg.UserID = user.ID
+	rmsg.Username = user.Name
+	if user.Profile.DisplayName != "" {
+		rmsg.Username = user.Profile.DisplayName
+	}
+	return nil
+}
+
+func (b *Bslack) populateMessageWithBotInfo(ev *slack.MessageEvent, rmsg *config.Message) error {
+	if ev.BotID == "" || b.GetString(outgoingWebhookConfig) != "" {
+		return nil
+	}
+
+	var err error
+	var bot *slack.Bot
+	for {
+		bot, err = b.rtm.GetBotInfo(ev.BotID)
+		if err == nil {
+			break
+		}
+
+		if err = b.handleRateLimit(err); err != nil {
+			b.Log.Errorf("Could not retrieve bot information: %#v", err)
+			return err
+		}
+	}
+	b.Log.Debugf("Found bot %#v", bot)
+
+	if bot.Name != "" {
+		rmsg.Username = bot.Name
+		if ev.Username != "" {
+			rmsg.Username = ev.Username
+		}
+		rmsg.UserID = bot.ID
+	}
+	return nil
+}
+
+var (
+	mentionRE        = regexp.MustCompile(`<@([a-zA-Z0-9]+)>`)
+	channelRE        = regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`)
+	variableRE       = regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`)
+	urlRE            = regexp.MustCompile(`<(.*?)(\|.*?)?>`)
+	codeFenceRE      = regexp.MustCompile(`(?m)^` + "```" + `\w+$`)
+	topicOrPurposeRE = regexp.MustCompile(`(?s)(@.+) (cleared|set)(?: the)? channel (topic|purpose)(?:: (.*))?`)
+)
+
+func (b *Bslack) extractTopicOrPurpose(text string) (string, string) {
+	r := topicOrPurposeRE.FindStringSubmatch(text)
+	if len(r) == 5 {
+		action, updateType, extracted := r[2], r[3], r[4]
+		switch action {
+		case "set":
+			return updateType, extracted
+		case "cleared":
+			return updateType, ""
+		}
+	}
+	b.Log.Warnf("Encountered channel topic or purpose change message with unexpected format: %s", text)
+	return "unknown", ""
+}
+
+// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
+func (b *Bslack) replaceMention(text string) string {
+	replaceFunc := func(match string) string {
+		userID := strings.Trim(match, "@<>")
+		if username := b.getUsername(userID); userID != "" {
+			return "@" + username
+		}
+		return match
+	}
+	return mentionRE.ReplaceAllStringFunc(text, replaceFunc)
+}
+
+// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
+func (b *Bslack) replaceChannel(text string) string {
+	for _, r := range channelRE.FindAllStringSubmatch(text, -1) {
+		text = strings.Replace(text, r[0], "#"+r[1], 1)
+	}
+	return text
+}
+
+// @see https://api.slack.com/docs/message-formatting#variables
+func (b *Bslack) replaceVariable(text string) string {
+	for _, r := range variableRE.FindAllStringSubmatch(text, -1) {
+		if r[2] != "" {
+			text = strings.Replace(text, r[0], "@"+r[2], 1)
+		} else {
+			text = strings.Replace(text, r[0], "@"+r[1], 1)
+		}
+	}
+	return text
+}
+
+// @see https://api.slack.com/docs/message-formatting#linking_to_urls
+func (b *Bslack) replaceURL(text string) string {
+	for _, r := range urlRE.FindAllStringSubmatch(text, -1) {
+		if len(strings.TrimSpace(r[2])) == 1 { // A display text separator was found, but the text was blank
+			text = strings.Replace(text, r[0], "", 1)
+		} else {
+			text = strings.Replace(text, r[0], r[1], 1)
+		}
+	}
+	return text
+}
+
+func (b *Bslack) replaceCodeFence(text string) string {
+	return codeFenceRE.ReplaceAllString(text, "```")
+}
+
+func (b *Bslack) handleRateLimit(err error) error {
+	rateLimit, ok := err.(*slack.RateLimitedError)
+	if !ok {
+		return err
+	}
+	b.Log.Infof("Rate-limited by Slack. Sleeping for %v", rateLimit.RetryAfter)
+	time.Sleep(rateLimit.RetryAfter)
+	return nil
+}
+
+// getUsersInConversation returns an array of userIDs that are members of channelID
+func (b *Bslack) getUsersInConversation(channelID string) ([]string, error) {
+	channelMembers := []string{}
+	for {
+		queryParams := &slack.GetUsersInConversationParameters{
+			ChannelID: channelID,
+		}
+
+		members, nextCursor, err := b.sc.GetUsersInConversation(queryParams)
+		if err != nil {
+			if err = b.handleRateLimit(err); err != nil {
+				return channelMembers, fmt.Errorf("Could not retrieve users in channels: %#v", err)
+			}
+			continue
+		}
+
+		channelMembers = append(channelMembers, members...)
+
+		if nextCursor == "" {
+			break
+		}
+		queryParams.Cursor = nextCursor
+	}
+	return channelMembers, nil
+}

bridge/slack/helpers_test.go

@@ -0,0 +1,36 @@
+package bslack
+
+import (
+	"io/ioutil"
+	"testing"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/sirupsen/logrus"
+	"github.com/stretchr/testify/assert"
+)
+
+func TestExtractTopicOrPurpose(t *testing.T) {
+	testcases := map[string]struct {
+		input          string
+		wantChangeType string
+		wantOutput     string
+	}{
+		"success - topic type":   {"@someone set channel topic: foo bar", "topic", "foo bar"},
+		"success - purpose type": {"@someone set channel purpose: foo bar", "purpose", "foo bar"},
+		"success - one line":     {"@someone set channel topic: foo bar", "topic", "foo bar"},
+		"success - multi-line":   {"@someone set channel topic: foo\nbar", "topic", "foo\nbar"},
+		"success - cleared":      {"@someone cleared channel topic", "topic", ""},
+		"error - unhandled":      {"some unmatched message", "unknown", ""},
+	}
+
+	logger := logrus.New()
+	logger.SetOutput(ioutil.Discard)
+	cfg := &bridge.Config{Log: logger.WithFields(nil)}
+	b := newBridge(cfg)
+	for name, tc := range testcases {
+		gotChangeType, gotOutput := b.extractTopicOrPurpose(tc.input)
+
+		assert.Equalf(t, tc.wantChangeType, gotChangeType, "This testcase failed: %s", name)
+		assert.Equalf(t, tc.wantOutput, gotOutput, "This testcase failed: %s", name)
+	}
+}

bridge/slack/legacy.go

@@ -0,0 +1,74 @@
+package bslack
+
+import (
+	"errors"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/matterhook"
+	"github.com/nlopes/slack"
+)
+
+type BLegacy struct {
+	*Bslack
+}
+
+func NewLegacy(cfg *bridge.Config) bridge.Bridger {
+	return &BLegacy{Bslack: newBridge(cfg)}
+}
+
+func (b *BLegacy) Connect() error {
+	b.RLock()
+	defer b.RUnlock()
+	if b.GetString(incomingWebhookConfig) != "" {
+		switch {
+		case b.GetString(outgoingWebhookConfig) != "":
+			b.Log.Info("Connecting using webhookurl (sending) and webhookbindaddress (receiving)")
+			b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
+				InsecureSkipVerify: b.GetBool(skipTLSConfig),
+				BindAddress:        b.GetString(incomingWebhookConfig),
+			})
+		case b.GetString(tokenConfig) != "":
+			b.Log.Info("Connecting using token (sending)")
+			b.sc = slack.New(b.GetString(tokenConfig))
+			b.rtm = b.sc.NewRTM()
+			go b.rtm.ManageConnection()
+			b.Log.Info("Connecting using webhookbindaddress (receiving)")
+			b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
+				InsecureSkipVerify: b.GetBool(skipTLSConfig),
+				BindAddress:        b.GetString(incomingWebhookConfig),
+			})
+		default:
+			b.Log.Info("Connecting using webhookbindaddress (receiving)")
+			b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
+				InsecureSkipVerify: b.GetBool(skipTLSConfig),
+				BindAddress:        b.GetString(incomingWebhookConfig),
+			})
+		}
+		go b.handleSlack()
+		return nil
+	}
+	if b.GetString(outgoingWebhookConfig) != "" {
+		b.Log.Info("Connecting using webhookurl (sending)")
+		b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
+			InsecureSkipVerify: b.GetBool(skipTLSConfig),
+			DisableServer:      true,
+		})
+		if b.GetString(tokenConfig) != "" {
+			b.Log.Info("Connecting using token (receiving)")
+			b.sc = slack.New(b.GetString(tokenConfig))
+			b.rtm = b.sc.NewRTM()
+			go b.rtm.ManageConnection()
+			go b.handleSlack()
+		}
+	} else if b.GetString(tokenConfig) != "" {
+		b.Log.Info("Connecting using token (sending and receiving)")
+		b.sc = slack.New(b.GetString(tokenConfig))
+		b.rtm = b.sc.NewRTM()
+		go b.rtm.ManageConnection()
+		go b.handleSlack()
+	}
+	if b.GetString(incomingWebhookConfig) == "" && b.GetString(outgoingWebhookConfig) == "" && b.GetString(tokenConfig) == "" {
+		return errors.New("no connection method found. See that you have WebhookBindAddress, WebhookURL or Token configured")
+	}
+	return nil
+}

bridge/slack/slack.go

@@ -1,180 +1,535 @@
 package bslack
 
 import (
-	"github.com/42wim/matterbridge/bridge/config"
-	"github.com/42wim/matterbridge/matterhook"
-	log "github.com/Sirupsen/logrus"
-	"github.com/nlopes/slack"
+	"bytes"
+	"errors"
+	"fmt"
 	"strings"
+	"sync"
 	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/42wim/matterbridge/matterhook"
+	"github.com/hashicorp/golang-lru"
+	"github.com/nlopes/slack"
+	"github.com/rs/xid"
 )
 
-type MMMessage struct {
-	Text     string
-	Channel  string
-	Username string
+type Bslack struct {
+	sync.RWMutex
+	*bridge.Config
+
+	mh  *matterhook.Client
+	sc  *slack.Client
+	rtm *slack.RTM
+	si  *slack.Info
+
+	cache        *lru.Cache
+	uuid         string
+	useChannelID bool
+
+	users      map[string]*slack.User
+	usersMutex sync.RWMutex
+
+	channelsByID   map[string]*slack.Channel
+	channelsByName map[string]*slack.Channel
+	channelsMutex  sync.RWMutex
+
+	channelMembers      map[string][]string
+	channelMembersMutex sync.RWMutex
+
+	refreshInProgress      bool
+	earliestChannelRefresh time.Time
+	earliestUserRefresh    time.Time
+	refreshMutex           sync.Mutex
 }
 
-type bslack struct {
-	mh *matterhook.Client
-	sc *slack.Client
-	//	MMapi
-	*config.Config
-	rtm      *slack.RTM
-	Plus     bool
-	Remote   chan config.Message
-	channels []slack.Channel
+const (
+	sChannelJoin     = "channel_join"
+	sChannelLeave    = "channel_leave"
+	sChannelJoined   = "channel_joined"
+	sMemberJoined    = "member_joined_channel"
+	sMessageChanged  = "message_changed"
+	sMessageDeleted  = "message_deleted"
+	sSlackAttachment = "slack_attachment"
+	sPinnedItem      = "pinned_item"
+	sUnpinnedItem    = "unpinned_item"
+	sChannelTopic    = "channel_topic"
+	sChannelPurpose  = "channel_purpose"
+	sFileComment     = "file_comment"
+	sMeMessage       = "me_message"
+	sUserTyping      = "user_typing"
+	sLatencyReport   = "latency_report"
+	sSystemUser      = "system"
+	sSlackBotUser    = "slackbot"
+
+	tokenConfig           = "Token"
+	incomingWebhookConfig = "WebhookBindAddress"
+	outgoingWebhookConfig = "WebhookURL"
+	skipTLSConfig         = "SkipTLSVerify"
+	useNickPrefixConfig   = "PrefixMessagesWithNick"
+	editDisableConfig     = "EditDisable"
+	editSuffixConfig      = "EditSuffix"
+	iconURLConfig         = "iconurl"
+	noSendJoinConfig      = "nosendjoinpart"
+)
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	// Print a deprecation warning for legacy non-bot tokens (#527).
+	token := cfg.GetString(tokenConfig)
+	if token != "" && !strings.HasPrefix(token, "xoxb") {
+		cfg.Log.Warn("Non-bot token detected. It is STRONGLY recommended to use a proper bot-token instead.")
+		cfg.Log.Warn("Legacy tokens may be deprecated by Slack at short notice. See the Matterbridge GitHub wiki for a migration guide.")
+		cfg.Log.Warn("See https://github.com/42wim/matterbridge/wiki/Slack-bot-setup")
+		return NewLegacy(cfg)
+	}
+	return newBridge(cfg)
 }
 
-var flog *log.Entry
-
-func init() {
-	flog = log.WithFields(log.Fields{"module": "slack"})
-}
-
-func New(cfg *config.Config, c chan config.Message) *bslack {
-	b := &bslack{}
-	b.Config = cfg
-	b.Remote = c
-	b.Plus = cfg.Slack.UseAPI
+func newBridge(cfg *bridge.Config) *Bslack {
+	newCache, err := lru.New(5000)
+	if err != nil {
+		cfg.Log.Fatalf("Could not create LRU cache for Slack bridge: %v", err)
+	}
+	b := &Bslack{
+		Config:                 cfg,
+		uuid:                   xid.New().String(),
+		cache:                  newCache,
+		users:                  map[string]*slack.User{},
+		channelsByID:           map[string]*slack.Channel{},
+		channelsByName:         map[string]*slack.Channel{},
+		earliestChannelRefresh: time.Now(),
+		earliestUserRefresh:    time.Now(),
+	}
 	return b
 }
 
-func (b *bslack) Command(cmd string) string {
+func (b *Bslack) Command(cmd string) string {
 	return ""
 }
 
-func (b *bslack) Connect() error {
-	if !b.Plus {
-		b.mh = matterhook.New(b.Config.Slack.URL,
-			matterhook.Config{BindAddress: b.Config.Slack.BindAddress})
-	} else {
-		b.sc = slack.New(b.Config.Slack.Token)
-		flog.Infof("Trying login on slack with Token")
-		/*
-			if err != nil {
-				return err
+func (b *Bslack) Connect() error {
+	b.RLock()
+	defer b.RUnlock()
+
+	if b.GetString(incomingWebhookConfig) == "" && b.GetString(outgoingWebhookConfig) == "" && b.GetString(tokenConfig) == "" {
+		return errors.New("no connection method found: WebhookBindAddress, WebhookURL or Token need to be configured")
+	}
+
+	// If we have a token we use the Slack websocket-based RTM for both sending and receiving.
+	if token := b.GetString(tokenConfig); token != "" {
+		b.Log.Info("Connecting using token")
+		b.sc = slack.New(token)
+		b.rtm = b.sc.NewRTM()
+		go b.rtm.ManageConnection()
+		go b.handleSlack()
+		return nil
+	}
+
+	// In absence of a token we fall back to incoming and outgoing Webhooks.
+	b.mh = matterhook.New(
+		"",
+		matterhook.Config{
+			InsecureSkipVerify: b.GetBool("SkipTLSVerify"),
+			DisableServer:      true,
+		},
+	)
+	if b.GetString(outgoingWebhookConfig) != "" {
+		b.Log.Info("Using specified webhook for outgoing messages.")
+		b.mh.Url = b.GetString(outgoingWebhookConfig)
+	}
+	if b.GetString(incomingWebhookConfig) != "" {
+		b.Log.Info("Setting up local webhook for incoming messages.")
+		b.mh.BindAddress = b.GetString(incomingWebhookConfig)
+		b.mh.DisableServer = false
+		go b.handleSlack()
+	}
+	return nil
+}
+
+func (b *Bslack) Disconnect() error {
+	return b.rtm.Disconnect()
+}
+
+// JoinChannel only acts as a verification method that checks whether Matterbridge's
+// Slack integration is already member of the channel. This is because Slack does not
+// allow apps or bots to join channels themselves and they need to be invited
+// manually by a user.
+func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
+	// We can only join a channel through the Slack API.
+	if b.sc == nil {
+		return nil
+	}
+
+	b.populateChannels(false)
+
+	channelInfo, err := b.getChannel(channel.Name)
+	if err != nil {
+		return fmt.Errorf("could not join channel: %#v", err)
+	}
+
+	if strings.HasPrefix(channel.Name, "ID:") {
+		b.useChannelID = true
+		channel.Name = channelInfo.Name
+	}
+
+	if !channelInfo.IsMember {
+		return fmt.Errorf("slack integration that matterbridge is using is not member of channel '%s', please add it manually", channelInfo.Name)
+	}
+	return nil
+}
+
+func (b *Bslack) Reload(cfg *bridge.Config) (string, error) {
+	return "", nil
+}
+
+func (b *Bslack) Send(msg config.Message) (string, error) {
+	// Too noisy to log like other events
+	if msg.Event != config.EventUserTyping {
+		b.Log.Debugf("=> Receiving %#v", msg)
+	}
+
+	msg.Text = b.replaceCodeFence(msg.Text)
+
+	// Make a action /me of the message
+	if msg.Event == config.EventUserAction {
+		msg.Text = "_" + msg.Text + "_"
+	}
+
+	// Use webhook to send the message
+	if b.GetString(outgoingWebhookConfig) != "" {
+		return "", b.sendWebhook(msg)
+	}
+	return b.sendRTM(msg)
+}
+
+// sendWebhook uses the configured WebhookURL to send the message
+func (b *Bslack) sendWebhook(msg config.Message) error {
+	// Skip events.
+	if msg.Event != "" {
+		return nil
+	}
+
+	if b.GetBool(useNickPrefixConfig) {
+		msg.Text = msg.Username + msg.Text
+	}
+
+	if msg.Extra != nil {
+		// This sends a message only if we received a config.EVENT_FILE_FAILURE_SIZE.
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			rmsg := rmsg // scopelint
+			iconURL := config.GetIconURL(&rmsg, b.GetString(iconURLConfig))
+			matterMessage := matterhook.OMessage{
+				IconURL:  iconURL,
+				Channel:  msg.Channel,
+				UserName: rmsg.Username,
+				Text:     rmsg.Text,
 			}
-		*/
-		flog.Info("Login ok")
+			if err := b.mh.Send(matterMessage); err != nil {
+				b.Log.Errorf("Failed to send message: %v", err)
+			}
+		}
+
+		// Webhook doesn't support file uploads, so we add the URL manually.
+		for _, f := range msg.Extra["file"] {
+			fi, ok := f.(config.FileInfo)
+			if !ok {
+				b.Log.Errorf("Received a file with unexpected content: %#v", f)
+				continue
+			}
+			if fi.URL != "" {
+				msg.Text += " " + fi.URL
+			}
+		}
 	}
-	b.rtm = b.sc.NewRTM()
-	go b.rtm.ManageConnection()
-	go b.handleSlack()
-	return nil
-}
 
-func (b *bslack) Name() string {
-	return "slack"
-}
+	// If we have native slack_attachments add them.
+	var attachs []slack.Attachment
+	for _, attach := range msg.Extra[sSlackAttachment] {
+		attachs = append(attachs, attach.([]slack.Attachment)...)
+	}
 
-func (b *bslack) Send(msg config.Message) error {
-	flog.Infof("slack send %#v", msg)
-	if msg.Origin != "slack" {
-		return b.SendType(msg.Username, msg.Text, msg.Channel, "")
+	iconURL := config.GetIconURL(&msg, b.GetString(iconURLConfig))
+	matterMessage := matterhook.OMessage{
+		IconURL:     iconURL,
+		Attachments: attachs,
+		Channel:     msg.Channel,
+		UserName:    msg.Username,
+		Text:        msg.Text,
+	}
+	if msg.Avatar != "" {
+		matterMessage.IconURL = msg.Avatar
+	}
+	if err := b.mh.Send(matterMessage); err != nil {
+		b.Log.Errorf("Failed to send message via webhook: %#v", err)
+		return err
 	}
 	return nil
 }
 
-func (b *bslack) SendType(nick string, message string, channel string, mtype string) error {
-	if b.Config.Slack.PrefixMessagesWithNick {
-		message = nick + " " + message
+func (b *Bslack) sendRTM(msg config.Message) (string, error) {
+	// Handle channelmember messages.
+	if handled := b.handleGetChannelMembers(&msg); handled {
+		return "", nil
 	}
-	if !b.Plus {
-		matterMessage := matterhook.OMessage{IconURL: b.Config.Slack.IconURL}
-		matterMessage.Channel = channel
-		matterMessage.UserName = nick
-		matterMessage.Type = mtype
-		matterMessage.Text = message
-		err := b.mh.Send(matterMessage)
-		if err != nil {
-			flog.Info(err)
+
+	channelInfo, err := b.getChannel(msg.Channel)
+	if err != nil {
+		return "", fmt.Errorf("could not send message: %v", err)
+	}
+	if msg.Event == config.EventUserTyping {
+		if b.GetBool("ShowUserTyping") {
+			b.rtm.SendMessage(b.rtm.NewTypingMessage(channelInfo.ID))
+		}
+		return "", nil
+	}
+
+	var handled bool
+
+	// Handle topic/purpose updates.
+	if handled, err = b.handleTopicOrPurpose(&msg, channelInfo); handled {
+		return "", err
+	}
+
+	// Handle message deletions.
+	if handled, err = b.deleteMessage(&msg, channelInfo); handled {
+		return msg.ID, err
+	}
+
+	// Prepend nickname if configured.
+	if b.GetBool(useNickPrefixConfig) {
+		msg.Text = msg.Username + msg.Text
+	}
+
+	// Handle message edits.
+	if handled, err = b.editMessage(&msg, channelInfo); handled {
+		return msg.ID, err
+	}
+
+	// Upload a file if it exists.
+	if msg.Extra != nil {
+		extraMsgs := helper.HandleExtra(&msg, b.General)
+		for i := range extraMsgs {
+			rmsg := &extraMsgs[i]
+			rmsg.Text = rmsg.Username + rmsg.Text
+			_, err = b.postMessage(rmsg, channelInfo)
+			if err != nil {
+				b.Log.Error(err)
+			}
+		}
+		// Upload files if necessary (from Slack, Telegram or Mattermost).
+		b.uploadFile(&msg, channelInfo.ID)
+	}
+
+	// Post message.
+	return b.postMessage(&msg, channelInfo)
+}
+
+func (b *Bslack) updateTopicOrPurpose(msg *config.Message, channelInfo *slack.Channel) error {
+	var updateFunc func(channelID string, value string) (*slack.Channel, error)
+
+	incomingChangeType, text := b.extractTopicOrPurpose(msg.Text)
+	switch incomingChangeType {
+	case "topic":
+		updateFunc = b.rtm.SetTopicOfConversation
+	case "purpose":
+		updateFunc = b.rtm.SetPurposeOfConversation
+	default:
+		b.Log.Errorf("Unhandled type received from extractTopicOrPurpose: %s", incomingChangeType)
+		return nil
+	}
+	for {
+		_, err := updateFunc(channelInfo.ID, text)
+		if err == nil {
+			return nil
+		}
+		if err = b.handleRateLimit(err); err != nil {
 			return err
 		}
-		flog.Debug("->slack channel: ", channel, " ", message)
-		return nil
-	}
-	flog.Debugf("sent to slack channel API: %s %s", channel, message)
-	newmsg := b.rtm.NewOutgoingMessage(message, b.getChannelByName(channel).ID)
-	b.rtm.SendMessage(newmsg)
-	return nil
-}
-
-func (b *bslack) getChannelByName(name string) *slack.Channel {
-	if b.channels == nil {
-		return nil
-	}
-	for _, channel := range b.channels {
-		if channel.Name == name {
-			return &channel
-		}
-	}
-	return nil
-}
-
-func (b *bslack) handleSlack() {
-	flog.Infof("Choosing API based slack connection: %t", b.Plus)
-	mchan := make(chan *MMMessage)
-	if b.Plus {
-		go b.handleSlackClient(mchan)
-	} else {
-		go b.handleMatterHook(mchan)
-	}
-	time.Sleep(time.Second)
-	flog.Info("Start listening for Slack messages")
-	for message := range mchan {
-		texts := strings.Split(message.Text, "\n")
-		for _, text := range texts {
-			flog.Debug("Sending message from " + message.Username + " to " + message.Channel)
-			b.Remote <- config.Message{Text: text, Username: message.Username, Channel: message.Channel, Origin: "slack"}
-		}
 	}
 }
 
-func (b *bslack) handleSlackClient(mchan chan *MMMessage) {
-	for msg := range b.rtm.IncomingEvents {
-		switch ev := msg.Data.(type) {
-		case *slack.MessageEvent:
-			flog.Debugf("%#v", ev)
-			channel, err := b.rtm.GetChannelInfo(ev.Channel)
-			if err != nil {
-				continue
-			}
-			user, err := b.rtm.GetUserInfo(ev.User)
-			if err != nil {
-				continue
-			}
-			m := &MMMessage{}
-			m.Username = user.Name
-			m.Channel = channel.Name
-			m.Text = ev.Text
-			mchan <- m
-		case *slack.OutgoingErrorEvent:
-			flog.Debugf("%#v", ev.Error())
-		case *slack.ConnectedEvent:
-			b.channels = ev.Info.Channels
-			for _, val := range b.Config.Channel {
-				channel := b.getChannelByName(val.Slack)
-				if channel != nil && !channel.IsMember {
-					flog.Infof("Joining %s", val.Slack)
-					b.sc.JoinChannel(channel.ID)
-				}
-			}
-		case *slack.InvalidAuthEvent:
-			flog.Fatalf("Invalid Token %#v", ev)
-		default:
-		}
+// handles updating topic/purpose and determining whether to further propagate update messages.
+func (b *Bslack) handleTopicOrPurpose(msg *config.Message, channelInfo *slack.Channel) (bool, error) {
+	if msg.Event != config.EventTopicChange {
+		return false, nil
 	}
+
+	if b.GetBool("SyncTopic") {
+		return true, b.updateTopicOrPurpose(msg, channelInfo)
+	}
+
+	// Pass along to normal message handlers.
+	if b.GetBool("ShowTopicChange") {
+		return false, nil
+	}
+
+	// Swallow message as handled no-op.
+	return true, nil
 }
 
-func (b *bslack) handleMatterHook(mchan chan *MMMessage) {
+func (b *Bslack) deleteMessage(msg *config.Message, channelInfo *slack.Channel) (bool, error) {
+	if msg.Event != config.EventMsgDelete {
+		return false, nil
+	}
+
+	// Some protocols echo deletes, but with an empty ID.
+	if msg.ID == "" {
+		return true, nil
+	}
+
 	for {
-		message := b.mh.Receive()
-		flog.Debugf("receiving from slack %#v", message)
-		m := &MMMessage{}
-		m.Username = message.UserName
-		m.Text = message.Text
-		m.Channel = message.ChannelName
-		mchan <- m
+		_, _, err := b.rtm.DeleteMessage(channelInfo.ID, msg.ID)
+		if err == nil {
+			return true, nil
+		}
+
+		if err = b.handleRateLimit(err); err != nil {
+			b.Log.Errorf("Failed to delete user message from Slack: %#v", err)
+			return true, err
+		}
 	}
 }
+
+func (b *Bslack) editMessage(msg *config.Message, channelInfo *slack.Channel) (bool, error) {
+	if msg.ID == "" {
+		return false, nil
+	}
+	messageOptions := b.prepareMessageOptions(msg)
+	for {
+		messageOptions = append(messageOptions, slack.MsgOptionText(msg.Text, false))
+		_, _, _, err := b.rtm.UpdateMessage(channelInfo.ID, msg.ID, messageOptions...)
+		if err == nil {
+			return true, nil
+		}
+
+		if err = b.handleRateLimit(err); err != nil {
+			b.Log.Errorf("Failed to edit user message on Slack: %#v", err)
+			return true, err
+		}
+	}
+}
+
+func (b *Bslack) postMessage(msg *config.Message, channelInfo *slack.Channel) (string, error) {
+	// don't post empty messages
+	if msg.Text == "" {
+		return "", nil
+	}
+	messageOptions := b.prepareMessageOptions(msg)
+	messageOptions = append(messageOptions, slack.MsgOptionText(msg.Text, false))
+	for {
+		_, id, err := b.rtm.PostMessage(channelInfo.ID, messageOptions...)
+		if err == nil {
+			return id, nil
+		}
+
+		if err = b.handleRateLimit(err); err != nil {
+			b.Log.Errorf("Failed to sent user message to Slack: %#v", err)
+			return "", err
+		}
+	}
+}
+
+// uploadFile handles native upload of files
+func (b *Bslack) uploadFile(msg *config.Message, channelID string) {
+	for _, f := range msg.Extra["file"] {
+		fi, ok := f.(config.FileInfo)
+		if !ok {
+			b.Log.Errorf("Received a file with unexpected content: %#v", f)
+			continue
+		}
+		if msg.Text == fi.Comment {
+			msg.Text = ""
+		}
+		// Because the result of the UploadFile is slower than the MessageEvent from slack
+		// we can't match on the file ID yet, so we have to match on the filename too.
+		ts := time.Now()
+		b.Log.Debugf("Adding file %s to cache at %s with timestamp", fi.Name, ts.String())
+		b.cache.Add("filename"+fi.Name, ts)
+		initialComment := fmt.Sprintf("File from %s", msg.Username)
+		if fi.Comment != "" {
+			initialComment += fmt.Sprintf("with comment: %s", fi.Comment)
+		}
+		res, err := b.sc.UploadFile(slack.FileUploadParameters{
+			Reader:          bytes.NewReader(*fi.Data),
+			Filename:        fi.Name,
+			Channels:        []string{channelID},
+			InitialComment:  initialComment,
+			ThreadTimestamp: msg.ParentID,
+		})
+		if err != nil {
+			b.Log.Errorf("uploadfile %#v", err)
+			return
+		}
+		if res.ID != "" {
+			b.Log.Debugf("Adding file ID %s to cache with timestamp %s", res.ID, ts.String())
+			b.cache.Add("file"+res.ID, ts)
+		}
+	}
+}
+
+func (b *Bslack) prepareMessageOptions(msg *config.Message) []slack.MsgOption {
+	params := slack.NewPostMessageParameters()
+	if b.GetBool(useNickPrefixConfig) {
+		params.AsUser = true
+	}
+	params.Username = msg.Username
+	params.LinkNames = 1 // replace mentions
+	params.IconURL = config.GetIconURL(msg, b.GetString(iconURLConfig))
+	params.ThreadTimestamp = msg.ParentID
+	if msg.Avatar != "" {
+		params.IconURL = msg.Avatar
+	}
+
+	var attachments []slack.Attachment
+	// add a callback ID so we can see we created it
+	attachments = append(attachments, slack.Attachment{CallbackID: "matterbridge_" + b.uuid})
+	// add file attachments
+	attachments = append(attachments, b.createAttach(msg.Extra)...)
+	// add slack attachments (from another slack bridge)
+	if msg.Extra != nil {
+		for _, attach := range msg.Extra[sSlackAttachment] {
+			attachments = append(attachments, attach.([]slack.Attachment)...)
+		}
+	}
+
+	var opts []slack.MsgOption
+	opts = append(opts, slack.MsgOptionAttachments(attachments...))
+	opts = append(opts, slack.MsgOptionPostMessageParameters(params))
+	return opts
+}
+
+func (b *Bslack) createAttach(extra map[string][]interface{}) []slack.Attachment {
+	var attachements []slack.Attachment
+	for _, v := range extra["attachments"] {
+		entry := v.(map[string]interface{})
+		s := slack.Attachment{
+			Fallback:   extractStringField(entry, "fallback"),
+			Color:      extractStringField(entry, "color"),
+			Pretext:    extractStringField(entry, "pretext"),
+			AuthorName: extractStringField(entry, "author_name"),
+			AuthorLink: extractStringField(entry, "author_link"),
+			AuthorIcon: extractStringField(entry, "author_icon"),
+			Title:      extractStringField(entry, "title"),
+			TitleLink:  extractStringField(entry, "title_link"),
+			Text:       extractStringField(entry, "text"),
+			ImageURL:   extractStringField(entry, "image_url"),
+			ThumbURL:   extractStringField(entry, "thumb_url"),
+			Footer:     extractStringField(entry, "footer"),
+			FooterIcon: extractStringField(entry, "footer_icon"),
+		}
+		attachements = append(attachements, s)
+	}
+	return attachements
+}
+
+func extractStringField(data map[string]interface{}, field string) string {
+	if rawValue, found := data[field]; found {
+		if value, ok := rawValue.(string); ok {
+			return value
+		}
+	}
+	return ""
+}

bridge/sshchat/sshchat.go

@@ -0,0 +1,166 @@
+package bsshchat
+
+import (
+	"bufio"
+	"io"
+	"strings"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/shazow/ssh-chat/sshd"
+	"github.com/sirupsen/logrus"
+)
+
+type Bsshchat struct {
+	r *bufio.Scanner
+	w io.WriteCloser
+	*bridge.Config
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	return &Bsshchat{Config: cfg}
+}
+
+func (b *Bsshchat) Connect() error {
+	b.Log.Infof("Connecting %s", b.GetString("Server"))
+
+	// connHandler will be called by 'sshd.ConnectShell()' below
+	// once the connection is established in order to handle it.
+	connErr := make(chan error, 1) // Needs to be buffered.
+	connSignal := make(chan struct{})
+	connHandler := func(r io.Reader, w io.WriteCloser) error {
+		b.r = bufio.NewScanner(r)
+		b.r.Scan()
+		b.w = w
+		if _, err := b.w.Write([]byte("/theme mono\r\n/quiet\r\n")); err != nil {
+			return err
+		}
+		close(connSignal) // Connection is established so we can signal the success.
+		return b.handleSSHChat()
+	}
+
+	go func() {
+		// As a successful connection will result in this returning after the Connection
+		// method has already returned point we NEED to have a buffered channel to still
+		// be able to write.
+		connErr <- sshd.ConnectShell(b.GetString("Server"), b.GetString("Nick"), connHandler)
+	}()
+
+	select {
+	case err := <-connErr:
+		b.Log.Error("Connection failed")
+		return err
+	case <-connSignal:
+	}
+	b.Log.Info("Connection succeeded")
+	return nil
+}
+
+func (b *Bsshchat) Disconnect() error {
+	return nil
+}
+
+func (b *Bsshchat) JoinChannel(channel config.ChannelInfo) error {
+	return nil
+}
+
+func (b *Bsshchat) Send(msg config.Message) (string, error) {
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+	b.Log.Debugf("=> Receiving %#v", msg)
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			if _, err := b.w.Write([]byte(rmsg.Username + rmsg.Text + "\r\n")); err != nil {
+				b.Log.Errorf("Could not send extra message: %#v", err)
+			}
+		}
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg)
+		}
+	}
+	_, err := b.w.Write([]byte(msg.Username + msg.Text + "\r\n"))
+	return "", err
+}
+
+/*
+func (b *Bsshchat) sshchatKeepAlive() chan bool {
+	done := make(chan bool)
+	go func() {
+		ticker := time.NewTicker(90 * time.Second)
+		defer ticker.Stop()
+		for {
+			select {
+			case <-ticker.C:
+				b.Log.Debugf("PING")
+				err := b.xc.PingC2S("", "")
+				if err != nil {
+					b.Log.Debugf("PING failed %#v", err)
+				}
+			case <-done:
+				return
+			}
+		}
+	}()
+	return done
+}
+*/
+
+func stripPrompt(s string) string {
+	pos := strings.LastIndex(s, "\033[K")
+	if pos < 0 {
+		return s
+	}
+	return s[pos+3:]
+}
+
+func (b *Bsshchat) handleSSHChat() error {
+	/*
+		done := b.sshchatKeepAlive()
+		defer close(done)
+	*/
+	wait := true
+	for {
+		if b.r.Scan() {
+			// ignore messages from ourselves
+			if !strings.Contains(b.r.Text(), "\033[K") {
+				continue
+			}
+			if strings.Contains(b.r.Text(), "Rate limiting is in effect") {
+				continue
+			}
+			res := strings.Split(stripPrompt(b.r.Text()), ":")
+			if res[0] == "-> Set theme" {
+				wait = false
+				logrus.Debugf("mono found, allowing")
+				continue
+			}
+			if !wait {
+				b.Log.Debugf("<= Message %#v", res)
+				rmsg := config.Message{Username: res[0], Text: strings.TrimSpace(strings.Join(res[1:], ":")), Channel: "sshchat", Account: b.Account, UserID: "nick"}
+				b.Remote <- rmsg
+			}
+		}
+	}
+}
+
+func (b *Bsshchat) handleUploadFile(msg *config.Message) (string, error) {
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		if fi.Comment != "" {
+			msg.Text += fi.Comment + ": "
+		}
+		if fi.URL != "" {
+			msg.Text = fi.URL
+			if fi.Comment != "" {
+				msg.Text = fi.Comment + ": " + fi.URL
+			}
+		}
+		if _, err := b.w.Write([]byte(msg.Username + msg.Text + "\r\n")); err != nil {
+			b.Log.Errorf("Could not send file message: %#v", err)
+		}
+	}
+	return "", nil
+}

bridge/steam/handlers.go

@@ -0,0 +1,126 @@
+package bsteam
+
+import (
+	"fmt"
+	"strconv"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/Philipp15b/go-steam"
+	"github.com/Philipp15b/go-steam/protocol/steamlang"
+)
+
+func (b *Bsteam) handleChatMsg(e *steam.ChatMsgEvent) {
+	b.Log.Debugf("Receiving ChatMsgEvent: %#v", e)
+	b.Log.Debugf("<= Sending message from %s on %s to gateway", b.getNick(e.ChatterId), b.Account)
+	var channel int64
+	if e.ChatRoomId == 0 {
+		channel = int64(e.ChatterId)
+	} else {
+		// for some reason we have to remove 0x18000000000000
+		// TODO
+		// https://github.com/42wim/matterbridge/pull/630#discussion_r238102751
+		// channel = int64(e.ChatRoomId) & 0xfffffffffffff
+		channel = int64(e.ChatRoomId) - 0x18000000000000
+	}
+	msg := config.Message{
+		Username: b.getNick(e.ChatterId),
+		Text:     e.Message,
+		Channel:  strconv.FormatInt(channel, 10),
+		Account:  b.Account,
+		UserID:   strconv.FormatInt(int64(e.ChatterId), 10),
+	}
+	b.Remote <- msg
+}
+
+func (b *Bsteam) handleEvents() {
+	myLoginInfo := &steam.LogOnDetails{
+		Username: b.GetString("Login"),
+		Password: b.GetString("Password"),
+		AuthCode: b.GetString("AuthCode"),
+	}
+	// TODO Attempt to read existing auth hash to avoid steam guard.
+	// Maybe works
+	//myLoginInfo.SentryFileHash, _ = ioutil.ReadFile("sentry")
+	for event := range b.c.Events() {
+		switch e := event.(type) {
+		case *steam.ChatMsgEvent:
+			b.handleChatMsg(e)
+		case *steam.PersonaStateEvent:
+			b.Log.Debugf("PersonaStateEvent: %#v\n", e)
+			b.Lock()
+			b.userMap[e.FriendId] = e.Name
+			b.Unlock()
+		case *steam.ConnectedEvent:
+			b.c.Auth.LogOn(myLoginInfo)
+		case *steam.MachineAuthUpdateEvent:
+		// TODO sentry files for 2 auth
+		/*
+			b.Log.Info("authupdate", e)
+			b.Log.Info("hash", e.Hash)
+			ioutil.WriteFile("sentry", e.Hash, 0666)
+		*/
+		case *steam.LogOnFailedEvent:
+			b.Log.Info("Logon failed", e)
+			err := b.handleLogOnFailed(e, myLoginInfo)
+			if err != nil {
+				b.Log.Error(err)
+				return
+			}
+		case *steam.LoggedOnEvent:
+			b.Log.Debugf("LoggedOnEvent: %#v", e)
+			b.connected <- struct{}{}
+			b.Log.Debugf("setting online")
+			b.c.Social.SetPersonaState(steamlang.EPersonaState_Online)
+		case *steam.DisconnectedEvent:
+			b.Log.Info("Disconnected")
+			b.Log.Info("Attempting to reconnect...")
+			b.c.Connect()
+		case steam.FatalErrorEvent:
+			b.Log.Errorf("steam FatalErrorEvent: %#v", e)
+		default:
+			b.Log.Debugf("unknown event %#v", e)
+		}
+	}
+}
+
+func (b *Bsteam) handleLogOnFailed(e *steam.LogOnFailedEvent, myLoginInfo *steam.LogOnDetails) error {
+	switch e.Result {
+	case steamlang.EResult_AccountLogonDeniedNeedTwoFactorCode:
+		b.Log.Info("Steam guard isn't letting me in! Enter 2FA code:")
+		var code string
+		fmt.Scanf("%s", &code)
+		// TODO https://github.com/42wim/matterbridge/pull/630#discussion_r238103978
+		myLoginInfo.TwoFactorCode = code
+	case steamlang.EResult_AccountLogonDenied:
+		b.Log.Info("Steam guard isn't letting me in! Enter auth code:")
+		var code string
+		fmt.Scanf("%s", &code)
+		// TODO https://github.com/42wim/matterbridge/pull/630#discussion_r238103978
+		myLoginInfo.AuthCode = code
+	case steamlang.EResult_InvalidLoginAuthCode:
+		return fmt.Errorf("Steam guard: invalid login auth code: %#v ", e.Result)
+	default:
+		return fmt.Errorf("LogOnFailedEvent: %#v ", e.Result)
+		// TODO: Handle EResult_InvalidLoginAuthCode
+	}
+	return nil
+}
+
+// handleFileInfo handles config.FileInfo and adds correct file comment or URL to msg.Text.
+// Returns error if cast fails.
+func (b *Bsteam) handleFileInfo(msg *config.Message, f interface{}) error {
+	if _, ok := f.(config.FileInfo); !ok {
+		return fmt.Errorf("handleFileInfo cast failed %#v", f)
+	}
+	fi := f.(config.FileInfo)
+	if fi.Comment != "" {
+		msg.Text += fi.Comment + ": "
+	}
+	if fi.URL != "" {
+		msg.Text = fi.URL
+		if fi.Comment != "" {
+			msg.Text = fi.Comment + ": " + fi.URL
+		}
+	}
+	return nil
+}

bridge/steam/steam.go

@@ -0,0 +1,95 @@
+package bsteam
+
+import (
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/Philipp15b/go-steam"
+	"github.com/Philipp15b/go-steam/protocol/steamlang"
+	"github.com/Philipp15b/go-steam/steamid"
+)
+
+type Bsteam struct {
+	c         *steam.Client
+	connected chan struct{}
+	userMap   map[steamid.SteamId]string
+	sync.RWMutex
+	*bridge.Config
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &Bsteam{Config: cfg}
+	b.userMap = make(map[steamid.SteamId]string)
+	b.connected = make(chan struct{})
+	return b
+}
+
+func (b *Bsteam) Connect() error {
+	b.Log.Info("Connecting")
+	b.c = steam.NewClient()
+	go b.handleEvents()
+	go b.c.Connect()
+	select {
+	case <-b.connected:
+		b.Log.Info("Connection succeeded")
+	case <-time.After(time.Second * 30):
+		return fmt.Errorf("connection timed out")
+	}
+	return nil
+}
+
+func (b *Bsteam) Disconnect() error {
+	b.c.Disconnect()
+	return nil
+
+}
+
+func (b *Bsteam) JoinChannel(channel config.ChannelInfo) error {
+	id, err := steamid.NewId(channel.Name)
+	if err != nil {
+		return err
+	}
+	b.c.Social.JoinChat(id)
+	return nil
+}
+
+func (b *Bsteam) Send(msg config.Message) (string, error) {
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+	id, err := steamid.NewId(msg.Channel)
+	if err != nil {
+		return "", err
+	}
+
+	// Handle files
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			b.c.Social.SendMessage(id, steamlang.EChatEntryType_ChatMsg, rmsg.Username+rmsg.Text)
+		}
+		for i := range msg.Extra["file"] {
+			if err := b.handleFileInfo(&msg, msg.Extra["file"][i]); err != nil {
+				b.Log.Error(err)
+			}
+			b.c.Social.SendMessage(id, steamlang.EChatEntryType_ChatMsg, msg.Username+msg.Text)
+		}
+		return "", nil
+	}
+
+	b.c.Social.SendMessage(id, steamlang.EChatEntryType_ChatMsg, msg.Username+msg.Text)
+	return "", nil
+}
+
+func (b *Bsteam) getNick(id steamid.SteamId) string {
+	b.RLock()
+	defer b.RUnlock()
+	if name, ok := b.userMap[id]; ok {
+		return name
+	}
+	return "unknown"
+}

bridge/telegram/handlers.go

@@ -0,0 +1,346 @@
+package btelegram
+
+import (
+	"html"
+	"regexp"
+	"strconv"
+	"strings"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/go-telegram-bot-api/telegram-bot-api"
+)
+
+func (b *Btelegram) handleUpdate(rmsg *config.Message, message, posted, edited *tgbotapi.Message) *tgbotapi.Message {
+	// handle channels
+	if posted != nil {
+		message = posted
+		rmsg.Text = message.Text
+	}
+
+	// edited channel message
+	if edited != nil && !b.GetBool("EditDisable") {
+		message = edited
+		rmsg.Text = rmsg.Text + message.Text + b.GetString("EditSuffix")
+	}
+	return message
+}
+
+// handleChannels checks if it's a channel message and if the message is a new or edited messages
+func (b *Btelegram) handleChannels(rmsg *config.Message, message *tgbotapi.Message, update tgbotapi.Update) *tgbotapi.Message {
+	return b.handleUpdate(rmsg, message, update.ChannelPost, update.EditedChannelPost)
+}
+
+// handleGroups checks if it's a group message and if the message is a new or edited messages
+func (b *Btelegram) handleGroups(rmsg *config.Message, message *tgbotapi.Message, update tgbotapi.Update) *tgbotapi.Message {
+	return b.handleUpdate(rmsg, message, update.Message, update.EditedMessage)
+}
+
+// handleForwarded handles forwarded messages
+func (b *Btelegram) handleForwarded(rmsg *config.Message, message *tgbotapi.Message) {
+	if message.ForwardFrom != nil {
+		usernameForward := ""
+		if b.GetBool("UseFirstName") {
+			usernameForward = message.ForwardFrom.FirstName
+		}
+		if usernameForward == "" {
+			usernameForward = message.ForwardFrom.UserName
+			if usernameForward == "" {
+				usernameForward = message.ForwardFrom.FirstName
+			}
+		}
+		if usernameForward == "" {
+			usernameForward = unknownUser
+		}
+		rmsg.Text = "Forwarded from " + usernameForward + ": " + rmsg.Text
+	}
+}
+
+// handleQuoting handles quoting of previous messages
+func (b *Btelegram) handleQuoting(rmsg *config.Message, message *tgbotapi.Message) {
+	if message.ReplyToMessage != nil {
+		usernameReply := ""
+		if message.ReplyToMessage.From != nil {
+			if b.GetBool("UseFirstName") {
+				usernameReply = message.ReplyToMessage.From.FirstName
+			}
+			if usernameReply == "" {
+				usernameReply = message.ReplyToMessage.From.UserName
+				if usernameReply == "" {
+					usernameReply = message.ReplyToMessage.From.FirstName
+				}
+			}
+		}
+		if usernameReply == "" {
+			usernameReply = unknownUser
+		}
+		if !b.GetBool("QuoteDisable") {
+			rmsg.Text = b.handleQuote(rmsg.Text, usernameReply, message.ReplyToMessage.Text)
+		}
+	}
+}
+
+// handleUsername handles the correct setting of the username
+func (b *Btelegram) handleUsername(rmsg *config.Message, message *tgbotapi.Message) {
+	if message.From != nil {
+		rmsg.UserID = strconv.Itoa(message.From.ID)
+		if b.GetBool("UseFirstName") {
+			rmsg.Username = message.From.FirstName
+		}
+		if rmsg.Username == "" {
+			rmsg.Username = message.From.UserName
+			if rmsg.Username == "" {
+				rmsg.Username = message.From.FirstName
+			}
+		}
+		// only download avatars if we have a place to upload them (configured mediaserver)
+		if b.General.MediaServerUpload != "" {
+			b.handleDownloadAvatar(message.From.ID, rmsg.Channel)
+		}
+	}
+
+	// if we really didn't find a username, set it to unknown
+	if rmsg.Username == "" {
+		rmsg.Username = unknownUser
+	}
+}
+
+func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
+	for update := range updates {
+		b.Log.Debugf("== Receiving event: %#v", update.Message)
+
+		if update.Message == nil && update.ChannelPost == nil &&
+			update.EditedMessage == nil && update.EditedChannelPost == nil {
+			b.Log.Error("Getting nil messages, this shouldn't happen.")
+			continue
+		}
+
+		var message *tgbotapi.Message
+
+		rmsg := config.Message{Account: b.Account, Extra: make(map[string][]interface{})}
+
+		// handle channels
+		message = b.handleChannels(&rmsg, message, update)
+
+		// handle groups
+		message = b.handleGroups(&rmsg, message, update)
+
+		// set the ID's from the channel or group message
+		rmsg.ID = strconv.Itoa(message.MessageID)
+		rmsg.Channel = strconv.FormatInt(message.Chat.ID, 10)
+
+		// handle username
+		b.handleUsername(&rmsg, message)
+
+		// handle any downloads
+		err := b.handleDownload(&rmsg, message)
+		if err != nil {
+			b.Log.Errorf("download failed: %s", err)
+		}
+
+		// handle forwarded messages
+		b.handleForwarded(&rmsg, message)
+
+		// quote the previous message
+		b.handleQuoting(&rmsg, message)
+
+		if rmsg.Text != "" || len(rmsg.Extra) > 0 {
+			rmsg.Text = helper.RemoveEmptyNewLines(rmsg.Text)
+			// channels don't have (always?) user information. see #410
+			if message.From != nil {
+				rmsg.Avatar = helper.GetAvatar(b.avatarMap, strconv.Itoa(message.From.ID), b.General)
+			}
+
+			b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
+			b.Log.Debugf("<= Message is %#v", rmsg)
+			b.Remote <- rmsg
+		}
+	}
+}
+
+// handleDownloadAvatar downloads the avatar of userid from channel
+// sends a EVENT_AVATAR_DOWNLOAD message to the gateway if successful.
+// logs an error message if it fails
+func (b *Btelegram) handleDownloadAvatar(userid int, channel string) {
+	rmsg := config.Message{Username: "system",
+		Text:    "avatar",
+		Channel: channel,
+		Account: b.Account,
+		UserID:  strconv.Itoa(userid),
+		Event:   config.EventAvatarDownload,
+		Extra:   make(map[string][]interface{})}
+
+	if _, ok := b.avatarMap[strconv.Itoa(userid)]; !ok {
+		photos, err := b.c.GetUserProfilePhotos(tgbotapi.UserProfilePhotosConfig{UserID: userid, Limit: 1})
+		if err != nil {
+			b.Log.Errorf("Userprofile download failed for %#v %s", userid, err)
+		}
+
+		if len(photos.Photos) > 0 {
+			photo := photos.Photos[0][0]
+			url := b.getFileDirectURL(photo.FileID)
+			name := strconv.Itoa(userid) + ".png"
+			b.Log.Debugf("trying to download %#v fileid %#v with size %#v", name, photo.FileID, photo.FileSize)
+
+			err := helper.HandleDownloadSize(b.Log, &rmsg, name, int64(photo.FileSize), b.General)
+			if err != nil {
+				b.Log.Error(err)
+				return
+			}
+			data, err := helper.DownloadFile(url)
+			if err != nil {
+				b.Log.Errorf("download %s failed %#v", url, err)
+				return
+			}
+			helper.HandleDownloadData(b.Log, &rmsg, name, rmsg.Text, "", data, b.General)
+			b.Remote <- rmsg
+		}
+	}
+}
+
+// handleDownloadFile handles file download
+func (b *Btelegram) handleDownload(rmsg *config.Message, message *tgbotapi.Message) error {
+	size := 0
+	var url, name, text string
+	switch {
+	case message.Sticker != nil:
+		text, name, url = b.getDownloadInfo(message.Sticker.FileID, ".webp", true)
+		size = message.Sticker.FileSize
+	case message.Voice != nil:
+		text, name, url = b.getDownloadInfo(message.Voice.FileID, ".ogg", true)
+		size = message.Voice.FileSize
+	case message.Video != nil:
+		text, name, url = b.getDownloadInfo(message.Video.FileID, "", true)
+		size = message.Video.FileSize
+	case message.Audio != nil:
+		text, name, url = b.getDownloadInfo(message.Audio.FileID, "", true)
+		size = message.Audio.FileSize
+	case message.Document != nil:
+		_, _, url = b.getDownloadInfo(message.Document.FileID, "", false)
+		size = message.Document.FileSize
+		name = message.Document.FileName
+		text = " " + message.Document.FileName + " : " + url
+	case message.Photo != nil:
+		photos := *message.Photo
+		size = photos[len(photos)-1].FileSize
+		text, name, url = b.getDownloadInfo(photos[len(photos)-1].FileID, "", true)
+	}
+
+	// if name is empty we didn't match a thing to download
+	if name == "" {
+		return nil
+	}
+	// use the URL instead of native upload
+	if b.GetBool("UseInsecureURL") {
+		b.Log.Debugf("Setting message text to :%s", text)
+		rmsg.Text += text
+		return nil
+	}
+	// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
+	err := helper.HandleDownloadSize(b.Log, rmsg, name, int64(size), b.General)
+	if err != nil {
+		return err
+	}
+	data, err := helper.DownloadFile(url)
+	if err != nil {
+		return err
+	}
+	helper.HandleDownloadData(b.Log, rmsg, name, message.Caption, "", data, b.General)
+	return nil
+}
+
+func (b *Btelegram) getDownloadInfo(id string, suffix string, urlpart bool) (string, string, string) {
+	url := b.getFileDirectURL(id)
+	name := ""
+	if urlpart {
+		urlPart := strings.Split(url, "/")
+		name = urlPart[len(urlPart)-1]
+	}
+	if suffix != "" && !strings.HasSuffix(name, suffix) {
+		name += suffix
+	}
+	text := " " + url
+	return text, name, url
+}
+
+// handleDelete handles message deleting
+func (b *Btelegram) handleDelete(msg *config.Message, chatid int64) (string, error) {
+	if msg.ID == "" {
+		return "", nil
+	}
+	msgid, err := strconv.Atoi(msg.ID)
+	if err != nil {
+		return "", err
+	}
+	_, err = b.c.DeleteMessage(tgbotapi.DeleteMessageConfig{ChatID: chatid, MessageID: msgid})
+	return "", err
+}
+
+// handleEdit handles message editing.
+func (b *Btelegram) handleEdit(msg *config.Message, chatid int64) (string, error) {
+	msgid, err := strconv.Atoi(msg.ID)
+	if err != nil {
+		return "", err
+	}
+	if strings.ToLower(b.GetString("MessageFormat")) == HTMLNick {
+		b.Log.Debug("Using mode HTML - nick only")
+		msg.Text = html.EscapeString(msg.Text)
+	}
+	m := tgbotapi.NewEditMessageText(chatid, msgid, msg.Username+msg.Text)
+	switch b.GetString("MessageFormat") {
+	case HTMLFormat:
+		b.Log.Debug("Using mode HTML")
+		m.ParseMode = tgbotapi.ModeHTML
+	case "Markdown":
+		b.Log.Debug("Using mode markdown")
+		m.ParseMode = tgbotapi.ModeMarkdown
+	}
+	if strings.ToLower(b.GetString("MessageFormat")) == HTMLNick {
+		b.Log.Debug("Using mode HTML - nick only")
+		m.ParseMode = tgbotapi.ModeHTML
+	}
+	_, err = b.c.Send(m)
+	if err != nil {
+		return "", err
+	}
+	return "", nil
+}
+
+// handleUploadFile handles native upload of files
+func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64) string {
+	var c tgbotapi.Chattable
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		file := tgbotapi.FileBytes{
+			Name:  fi.Name,
+			Bytes: *fi.Data,
+		}
+		re := regexp.MustCompile(".(jpg|png)$")
+		if re.MatchString(fi.Name) {
+			c = tgbotapi.NewPhotoUpload(chatid, file)
+		} else {
+			c = tgbotapi.NewDocumentUpload(chatid, file)
+		}
+		_, err := b.c.Send(c)
+		if err != nil {
+			b.Log.Errorf("file upload failed: %#v", err)
+		}
+		if fi.Comment != "" {
+			if _, err := b.sendMessage(chatid, msg.Username, fi.Comment); err != nil {
+				b.Log.Errorf("posting file comment %s failed: %s", fi.Comment, err)
+			}
+		}
+	}
+	return ""
+}
+
+func (b *Btelegram) handleQuote(message, quoteNick, quoteMessage string) string {
+	format := b.GetString("quoteformat")
+	if format == "" {
+		format = "{MESSAGE} (re @{QUOTENICK}: {QUOTEMESSAGE})"
+	}
+	format = strings.Replace(format, "{MESSAGE}", message, -1)
+	format = strings.Replace(format, "{QUOTENICK}", quoteNick, -1)
+	format = strings.Replace(format, "{QUOTEMESSAGE}", quoteMessage, -1)
+	return format
+}

bridge/telegram/html.go

@@ -0,0 +1,69 @@
+package btelegram
+
+import (
+	"bytes"
+	"html"
+	"io"
+
+	"github.com/russross/blackfriday"
+)
+
+type customHTML struct {
+	blackfriday.Renderer
+}
+
+func (options *customHTML) Paragraph(out *bytes.Buffer, text func() bool) {
+	marker := out.Len()
+
+	if !text() {
+		out.Truncate(marker)
+		return
+	}
+	out.WriteString("\n")
+}
+
+func (options *customHTML) BlockCode(out *bytes.Buffer, text []byte, lang string) {
+	out.WriteString("<pre>")
+
+	out.WriteString(html.EscapeString(string(text)))
+	out.WriteString("</pre>\n")
+}
+
+func (options *customHTML) Header(out *bytes.Buffer, text func() bool, level int, id string) {
+	options.Paragraph(out, text)
+}
+
+func (options *customHTML) HRule(out io.ByteWriter) {
+	out.WriteByte('\n') //nolint:errcheck
+}
+
+func (options *customHTML) BlockQuote(out *bytes.Buffer, text []byte) {
+	out.WriteString("> ")
+	out.Write(text)
+	out.WriteByte('\n')
+}
+
+func (options *customHTML) List(out *bytes.Buffer, text func() bool, flags int) {
+	options.Paragraph(out, text)
+}
+
+func (options *customHTML) ListItem(out *bytes.Buffer, text []byte, flags int) {
+	out.WriteString("- ")
+	out.Write(text)
+	out.WriteByte('\n')
+}
+
+func makeHTML(input string) string {
+	extensions := blackfriday.NoIntraEmphasis |
+		blackfriday.FencedCode |
+		blackfriday.Autolink |
+		blackfriday.SpaceHeadings |
+		blackfriday.HeadingIDs |
+		blackfriday.BackslashLineBreak |
+		blackfriday.DefinitionLists
+
+	renderer := &customHTML{blackfriday.NewHTMLRenderer(blackfriday.HTMLRendererParameters{
+		Flags: blackfriday.UseXHTML | blackfriday.SkipImages,
+	})}
+	return string(blackfriday.Run([]byte(input), blackfriday.WithExtensions(extensions), blackfriday.WithRenderer(renderer)))
+}

bridge/telegram/telegram.go

@@ -0,0 +1,143 @@
+package btelegram
+
+import (
+	"html"
+	"strconv"
+	"strings"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/go-telegram-bot-api/telegram-bot-api"
+)
+
+const (
+	unknownUser = "unknown"
+	HTMLFormat  = "HTML"
+	HTMLNick    = "htmlnick"
+)
+
+type Btelegram struct {
+	c *tgbotapi.BotAPI
+	*bridge.Config
+	avatarMap map[string]string // keep cache of userid and avatar sha
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	return &Btelegram{Config: cfg, avatarMap: make(map[string]string)}
+}
+
+func (b *Btelegram) Connect() error {
+	var err error
+	b.Log.Info("Connecting")
+	b.c, err = tgbotapi.NewBotAPI(b.GetString("Token"))
+	if err != nil {
+		b.Log.Debugf("%#v", err)
+		return err
+	}
+	u := tgbotapi.NewUpdate(0)
+	u.Timeout = 60
+	updates, err := b.c.GetUpdatesChan(u)
+	if err != nil {
+		b.Log.Debugf("%#v", err)
+		return err
+	}
+	b.Log.Info("Connection succeeded")
+	go b.handleRecv(updates)
+	return nil
+}
+
+func (b *Btelegram) Disconnect() error {
+	return nil
+}
+
+func (b *Btelegram) JoinChannel(channel config.ChannelInfo) error {
+	return nil
+}
+
+func (b *Btelegram) Send(msg config.Message) (string, error) {
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// get the chatid
+	chatid, err := strconv.ParseInt(msg.Channel, 10, 64)
+	if err != nil {
+		return "", err
+	}
+
+	// map the file SHA to our user (caches the avatar)
+	if msg.Event == config.EventAvatarDownload {
+		return b.cacheAvatar(&msg)
+	}
+
+	if b.GetString("MessageFormat") == HTMLFormat {
+		msg.Text = makeHTML(msg.Text)
+	}
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		return b.handleDelete(&msg, chatid)
+	}
+
+	// Upload a file if it exists
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			if _, err := b.sendMessage(chatid, rmsg.Username, rmsg.Text); err != nil {
+				b.Log.Errorf("sendMessage failed: %s", err)
+			}
+		}
+		// check if we have files to upload (from slack, telegram or mattermost)
+		if len(msg.Extra["file"]) > 0 {
+			b.handleUploadFile(&msg, chatid)
+		}
+	}
+
+	// edit the message if we have a msg ID
+	if msg.ID != "" {
+		return b.handleEdit(&msg, chatid)
+	}
+
+	// Post normal message
+	return b.sendMessage(chatid, msg.Username, msg.Text)
+}
+
+func (b *Btelegram) getFileDirectURL(id string) string {
+	res, err := b.c.GetFileDirectURL(id)
+	if err != nil {
+		return ""
+	}
+	return res
+}
+
+func (b *Btelegram) sendMessage(chatid int64, username, text string) (string, error) {
+	m := tgbotapi.NewMessage(chatid, "")
+	m.Text = username + text
+	if b.GetString("MessageFormat") == HTMLFormat {
+		b.Log.Debug("Using mode HTML")
+		m.ParseMode = tgbotapi.ModeHTML
+	}
+	if b.GetString("MessageFormat") == "Markdown" {
+		b.Log.Debug("Using mode markdown")
+		m.ParseMode = tgbotapi.ModeMarkdown
+	}
+	if strings.ToLower(b.GetString("MessageFormat")) == HTMLNick {
+		b.Log.Debug("Using mode HTML - nick only")
+		m.Text = username + html.EscapeString(text)
+		m.ParseMode = tgbotapi.ModeHTML
+	}
+	res, err := b.c.Send(m)
+	if err != nil {
+		return "", err
+	}
+	return strconv.Itoa(res.MessageID), nil
+}
+
+func (b *Btelegram) cacheAvatar(msg *config.Message) (string, error) {
+	fi := msg.Extra["file"][0].(config.FileInfo)
+	/* if we have a sha we have successfully uploaded the file to the media server,
+	so we can now cache the sha */
+	if fi.SHA != "" {
+		b.Log.Debugf("Added %s to %s in avatarMap", fi.SHA, msg.UserID)
+		b.avatarMap[msg.UserID] = fi.SHA
+	}
+	return "", nil
+}

bridge/xmpp/xmpp.go

@@ -1,109 +1,160 @@
 package bxmpp
 
 import (
-	"github.com/42wim/matterbridge/bridge/config"
-	log "github.com/Sirupsen/logrus"
-	"github.com/mattn/go-xmpp"
-
+	"crypto/tls"
 	"strings"
 	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	"github.com/jpillora/backoff"
+	"github.com/matterbridge/go-xmpp"
+	"github.com/rs/xid"
 )
 
 type Bxmpp struct {
 	xc      *xmpp.Client
 	xmppMap map[string]string
-	*config.Config
-	Remote chan config.Message
+	*bridge.Config
 }
 
-type FancyLog struct {
-	xmpp *log.Entry
-}
-
-type Message struct {
-	Text     string
-	Channel  string
-	Username string
-}
-
-var flog FancyLog
-
-func init() {
-	flog.xmpp = log.WithFields(log.Fields{"module": "xmpp"})
-}
-
-func New(config *config.Config, c chan config.Message) *Bxmpp {
-	b := &Bxmpp{}
+func New(cfg *bridge.Config) bridge.Bridger {
+	b := &Bxmpp{Config: cfg}
 	b.xmppMap = make(map[string]string)
-	b.Config = config
-	b.Remote = c
 	return b
 }
 
 func (b *Bxmpp) Connect() error {
 	var err error
-	flog.xmpp.Info("Trying XMPP connection")
+	b.Log.Infof("Connecting %s", b.GetString("Server"))
 	b.xc, err = b.createXMPP()
 	if err != nil {
-		flog.xmpp.Debugf("%#v", err)
+		b.Log.Debugf("%#v", err)
 		return err
 	}
-	flog.xmpp.Info("Connection succeeded")
-	b.setupChannels()
-	go b.handleXmpp()
+	b.Log.Info("Connection succeeded")
+	go func() {
+		initial := true
+		bf := &backoff.Backoff{
+			Min:    time.Second,
+			Max:    5 * time.Minute,
+			Jitter: true,
+		}
+		for {
+			if initial {
+				b.handleXMPP()
+				initial = false
+			}
+			d := bf.Duration()
+			b.Log.Infof("Disconnected. Reconnecting in %s", d)
+			time.Sleep(d)
+			b.xc, err = b.createXMPP()
+			if err == nil {
+				b.Remote <- config.Message{Username: "system", Text: "rejoin", Channel: "", Account: b.Account, Event: config.EventRejoinChannels}
+				b.handleXMPP()
+				bf.Reset()
+			}
+		}
+	}()
 	return nil
 }
 
-func (b *Bxmpp) Name() string {
-	return "xmpp"
+func (b *Bxmpp) Disconnect() error {
+	return nil
 }
 
-func (b *Bxmpp) Send(msg config.Message) error {
-	b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.Xmpp.Muc, Text: msg.Username + msg.Text})
+func (b *Bxmpp) JoinChannel(channel config.ChannelInfo) error {
+	if channel.Options.Key != "" {
+		b.Log.Debugf("using key %s for channel %s", channel.Options.Key, channel.Name)
+		b.xc.JoinProtectedMUC(channel.Name+"@"+b.GetString("Muc"), b.GetString("Nick"), channel.Options.Key, xmpp.NoHistory, 0, nil)
+	} else {
+		b.xc.JoinMUCNoHistory(channel.Name+"@"+b.GetString("Muc"), b.GetString("Nick"))
+	}
 	return nil
 }
 
+func (b *Bxmpp) Send(msg config.Message) (string, error) {
+	// ignore delete messages
+	if msg.Event == config.EventMsgDelete {
+		return "", nil
+	}
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// Upload a file (in xmpp case send the upload URL because xmpp has no native upload support)
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: rmsg.Channel + "@" + b.GetString("Muc"), Text: rmsg.Username + rmsg.Text})
+		}
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg)
+		}
+	}
+
+	var msgreplaceid string
+	msgid := xid.New().String()
+	if msg.ID != "" {
+		msgid = msg.ID
+		msgreplaceid = msg.ID
+	}
+	// Post normal message
+	_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text, ID: msgid, ReplaceID: msgreplaceid})
+	if err != nil {
+		return "", err
+	}
+	return msgid, nil
+}
+
 func (b *Bxmpp) createXMPP() (*xmpp.Client, error) {
+	tc := new(tls.Config)
+	tc.InsecureSkipVerify = b.GetBool("SkipTLSVerify")
+	tc.ServerName = strings.Split(b.GetString("Server"), ":")[0]
 	options := xmpp.Options{
-		Host:     b.Config.Xmpp.Server,
-		User:     b.Config.Xmpp.Jid,
-		Password: b.Config.Xmpp.Password,
-		NoTLS:    true,
-		StartTLS: true,
-		//StartTLS:      false,
-		Debug:                        true,
+		Host:                         b.GetString("Server"),
+		User:                         b.GetString("Jid"),
+		Password:                     b.GetString("Password"),
+		NoTLS:                        true,
+		StartTLS:                     true,
+		TLSConfig:                    tc,
+		Debug:                        b.GetBool("debug"),
+		Logger:                       b.Log.Writer(),
 		Session:                      true,
 		Status:                       "",
 		StatusMessage:                "",
 		Resource:                     "",
 		InsecureAllowUnencryptedAuth: false,
-		//InsecureAllowUnencryptedAuth: true,
 	}
 	var err error
 	b.xc, err = options.NewClient()
 	return b.xc, err
 }
 
-func (b *Bxmpp) setupChannels() {
-	for _, val := range b.Config.Channel {
-		flog.xmpp.Infof("Joining %s as %s", val.Xmpp, b.Xmpp.Nick)
-		b.xc.JoinMUCNoHistory(val.Xmpp+"@"+b.Xmpp.Muc, b.Xmpp.Nick)
-	}
-}
-
-func (b *Bxmpp) xmppKeepAlive() {
+func (b *Bxmpp) xmppKeepAlive() chan bool {
+	done := make(chan bool)
 	go func() {
 		ticker := time.NewTicker(90 * time.Second)
+		defer ticker.Stop()
 		for {
 			select {
 			case <-ticker.C:
-				b.xc.Send(xmpp.Chat{})
+				b.Log.Debugf("PING")
+				err := b.xc.PingC2S("", "")
+				if err != nil {
+					b.Log.Debugf("PING failed %#v", err)
+				}
+			case <-done:
+				return
 			}
 		}
 	}()
+	return done
 }
 
-func (b *Bxmpp) handleXmpp() error {
+func (b *Bxmpp) handleXMPP() error {
+	var ok bool
+	var msgid string
+	done := b.xmppKeepAlive()
+	defer close(done)
 	for {
 		m, err := b.xc.Recv()
 		if err != nil {
@@ -111,23 +162,104 @@ func (b *Bxmpp) handleXmpp() error {
 		}
 		switch v := m.(type) {
 		case xmpp.Chat:
-			var channel, nick string
 			if v.Type == "groupchat" {
-				s := strings.Split(v.Remote, "@")
-				if len(s) == 2 {
-					channel = s[0]
+				b.Log.Debugf("== Receiving %#v", v)
+				// skip invalid messages
+				if b.skipMessage(v) {
+					continue
 				}
-				s = strings.Split(s[1], "/")
-				if len(s) == 2 {
-					nick = s[1]
+				msgid = v.ID
+				if v.ReplaceID != "" {
+					msgid = v.ReplaceID
 				}
-				if nick != b.Xmpp.Nick {
-					flog.xmpp.Infof("sending message to remote %s %s %s", nick, v.Text, channel)
-					b.Remote <- config.Message{Username: nick, Text: v.Text, Channel: channel, Origin: "xmpp"}
+				rmsg := config.Message{Username: b.parseNick(v.Remote), Text: v.Text, Channel: b.parseChannel(v.Remote), Account: b.Account, UserID: v.Remote, ID: msgid}
+
+				// check if we have an action event
+				rmsg.Text, ok = b.replaceAction(rmsg.Text)
+				if ok {
+					rmsg.Event = config.EventUserAction
 				}
+				b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
+				b.Log.Debugf("<= Message is %#v", rmsg)
+				b.Remote <- rmsg
 			}
 		case xmpp.Presence:
 			// do nothing
 		}
 	}
 }
+
+func (b *Bxmpp) replaceAction(text string) (string, bool) {
+	if strings.HasPrefix(text, "/me ") {
+		return strings.Replace(text, "/me ", "", -1), true
+	}
+	return text, false
+}
+
+// handleUploadFile handles native upload of files
+func (b *Bxmpp) handleUploadFile(msg *config.Message) (string, error) {
+	var urldesc = ""
+
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		if fi.Comment != "" {
+			msg.Text += fi.Comment + ": "
+		}
+		if fi.URL != "" {
+			msg.Text = fi.URL
+			if fi.Comment != "" {
+				msg.Text = fi.Comment + ": " + fi.URL
+				urldesc = fi.Comment
+			}
+		}
+		_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text})
+		if err != nil {
+			return "", err
+		}
+		if fi.URL != "" {
+			b.xc.SendOOB(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Ooburl: fi.URL, Oobdesc: urldesc})
+		}
+	}
+	return "", nil
+}
+
+func (b *Bxmpp) parseNick(remote string) string {
+	s := strings.Split(remote, "@")
+	if len(s) > 0 {
+		s = strings.Split(s[1], "/")
+		if len(s) == 2 {
+			return s[1] // nick
+		}
+	}
+	return ""
+}
+
+func (b *Bxmpp) parseChannel(remote string) string {
+	s := strings.Split(remote, "@")
+	if len(s) >= 2 {
+		return s[0] // channel
+	}
+	return ""
+}
+
+// skipMessage skips messages that need to be skipped
+func (b *Bxmpp) skipMessage(message xmpp.Chat) bool {
+	// skip messages from ourselves
+	if b.parseNick(message.Remote) == b.GetString("Nick") {
+		return true
+	}
+
+	// skip empty messages
+	if message.Text == "" {
+		return true
+	}
+
+	// skip subject messages
+	if strings.Contains(message.Text, "</subject>") {
+		return true
+	}
+
+	// skip delayed messages
+	t := time.Time{}
+	return message.Stamp != t
+}

bridge/zulip/zulip.go

@@ -0,0 +1,170 @@
+package bzulip
+
+import (
+	"encoding/json"
+	"io/ioutil"
+	"strconv"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/bridge/helper"
+	gzb "github.com/matterbridge/gozulipbot"
+)
+
+type Bzulip struct {
+	q       *gzb.Queue
+	bot     *gzb.Bot
+	streams map[int]string
+	*bridge.Config
+}
+
+func New(cfg *bridge.Config) bridge.Bridger {
+	return &Bzulip{Config: cfg, streams: make(map[int]string)}
+}
+
+func (b *Bzulip) Connect() error {
+	bot := gzb.Bot{APIKey: b.GetString("token"), APIURL: b.GetString("server") + "/api/v1/", Email: b.GetString("login")}
+	bot.Init()
+	q, err := bot.RegisterAll()
+	b.q = q
+	b.bot = &bot
+	if err != nil {
+		b.Log.Errorf("Connect() %#v", err)
+		return err
+	}
+	// init stream
+	b.getChannel(0)
+	b.Log.Info("Connection succeeded")
+	go b.handleQueue()
+	return nil
+}
+
+func (b *Bzulip) Disconnect() error {
+	return nil
+}
+
+func (b *Bzulip) JoinChannel(channel config.ChannelInfo) error {
+	return nil
+}
+
+func (b *Bzulip) Send(msg config.Message) (string, error) {
+	b.Log.Debugf("=> Receiving %#v", msg)
+
+	// Delete message
+	if msg.Event == config.EventMsgDelete {
+		if msg.ID == "" {
+			return "", nil
+		}
+		_, err := b.bot.UpdateMessage(msg.ID, "")
+		return "", err
+	}
+
+	// Upload a file if it exists
+	if msg.Extra != nil {
+		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
+			b.sendMessage(rmsg)
+		}
+		if len(msg.Extra["file"]) > 0 {
+			return b.handleUploadFile(&msg)
+		}
+	}
+
+	// edit the message if we have a msg ID
+	if msg.ID != "" {
+		_, err := b.bot.UpdateMessage(msg.ID, msg.Username+msg.Text)
+		return "", err
+	}
+
+	// Post normal message
+	return b.sendMessage(msg)
+}
+
+func (b *Bzulip) getChannel(id int) string {
+	if name, ok := b.streams[id]; ok {
+		return name
+	}
+	streams, err := b.bot.GetRawStreams()
+	if err != nil {
+		b.Log.Errorf("getChannel: %#v", err)
+		return ""
+	}
+	for _, stream := range streams.Streams {
+		b.streams[stream.StreamID] = stream.Name
+	}
+	if name, ok := b.streams[id]; ok {
+		return name
+	}
+	return ""
+}
+
+func (b *Bzulip) handleQueue() error {
+	for {
+		messages, _ := b.q.GetEvents()
+		for _, m := range messages {
+			b.Log.Debugf("== Receiving %#v", m)
+			// ignore our own messages
+			if m.SenderEmail == b.GetString("login") {
+				continue
+			}
+			rmsg := config.Message{Username: m.SenderFullName, Text: m.Content, Channel: b.getChannel(m.StreamID), Account: b.Account, UserID: strconv.Itoa(m.SenderID), Avatar: m.AvatarURL}
+			b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
+			b.Log.Debugf("<= Message is %#v", rmsg)
+			b.Remote <- rmsg
+			b.q.LastEventID = m.ID
+		}
+		time.Sleep(time.Second * 3)
+	}
+}
+
+func (b *Bzulip) sendMessage(msg config.Message) (string, error) {
+	topic := "matterbridge"
+	if b.GetString("topic") != "" {
+		topic = b.GetString("topic")
+	}
+	m := gzb.Message{
+		Stream:  msg.Channel,
+		Topic:   topic,
+		Content: msg.Username + msg.Text,
+	}
+	resp, err := b.bot.Message(m)
+	if err != nil {
+		return "", err
+	}
+	if resp != nil {
+		defer resp.Body.Close()
+		res, err := ioutil.ReadAll(resp.Body)
+		if err != nil {
+			return "", err
+		}
+		var jr struct {
+			ID int `json:"id"`
+		}
+		err = json.Unmarshal(res, &jr)
+		if err != nil {
+			return "", err
+		}
+		return strconv.Itoa(jr.ID), nil
+	}
+	return "", nil
+}
+
+func (b *Bzulip) handleUploadFile(msg *config.Message) (string, error) {
+	for _, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		if fi.Comment != "" {
+			msg.Text += fi.Comment + ": "
+		}
+		if fi.URL != "" {
+			msg.Text = fi.URL
+			if fi.Comment != "" {
+				msg.Text = fi.Comment + ": " + fi.URL
+			}
+		}
+		_, err := b.sendMessage(*msg)
+		if err != nil {
+			return "", err
+		}
+	}
+	return "", nil
+}

changelog.md

@@ -1,6 +1,725 @@
+# v1.13.0
+
+## New features
+* general: refactors of telegram, irc, mattermost, matrix, discord, sshchat bridges and the gateway.
+* irc: Add option to send RAW commands after connection (irc) #490. See `RunCommands` in matterbridge.toml.sample
+* mattermost: 3.x support dropped
+* mattermost: Add support for mattermost threading (#627)
+* slack: Sync channel topics between Slack bridges #585. See `SyncTopic` in matterbridge.toml.sample
+* matrix: Add support for markdown to HTML conversion (matrix). Closes #663 (#670)
+* discord: Improve error reporting on failure to join Discord. Fixes #672 (#680)
+* discord: Use only one webhook if possible (discord) (#681)
+* discord: Allow to bridge non-bot Discord users (discord) (#689) If you prefix a token with `User ` it'll treat is as a user token.
+
+## Bugfix
+* slack: Try downloading files again if slack is too slow (slack). Closes #655 (#656)
+* slack: Ignore LatencyReport event (slack)
+* slack: Fix #668 strip lang in code fences sent to Slack (#673)
+* sshchat: Fix sshchat connection logic (#661)
+* sshchat: set quiet mode to filter joins/quits
+* sshchat: Trim newlines in the end of relayed messages
+* sshchat: fix media links
+* sshchat: do not relay "Rate limiting is in effect" message
+* mattermost: Fail if channel starts with hashtag (mattermost). Closes #625
+* discord: Add file comment to webhook messages (discord). Fixes #358
+* matrix: Fix displaying usernames for plain text clients. (matrix) (#685)
+* irc: Fix possible data race (irc). Closes #693
+* irc: Handle servers without MOTD (irc). Closes #692
+
+# v1.12.3
+## Bugfix
+* slack: Fix bot (legacy token) messages not being send. Closes #571
+* slack: Populate user on channel join (slack) (#644)
+* slack: Add wait option for populateUsers/Channels (slack) Fixes #579 (#653)
+
+# v1.12.2
+
+## Bugfix
+* irc: Fix multiple channel join regression. Closes #639
+* slack: Make slack-legacy change less restrictive (#626)
+
+# v1.12.1
+
+## Bugfix
+* discord: fix regression on server ID connection #619 #617
+* discord: Limit discord username via webhook to 32 chars
+* slack: Make sure threaded files stay in thread (slack). Fixes #590
+* slack: Do not post empty messages (slack). Fixes #574
+* slack: Handle deleted/edited thread starting messages (slack). Fixes #600 (#605)
+* irc: Rework connection logic (irc)
+* irc: Fix Nickserv logic (irc) #602
+
+# v1.12.0
+
+## Breaking changes
+The slack bridge has been split in a `slack-legacy` and `slack` bridge.
+If you're still using `legacy tokens` and want to keep using them you'll have to rename `slack` to `slack-legacy` in your configuration. See [wiki](https://github.com/42wim/matterbridge/wiki/Section-Slack-(basic)#legacy-configuration) for more information.
+
+To migrate to the new bot-token based setup you can follow the instructions [here](https://github.com/42wim/matterbridge/wiki/Slack-bot-setup).
+
+Slack legacy tokens may be deprecated by Slack at short notice, so it is STRONGLY recommended to use a proper bot-token instead.
+
+## New features
+* general: New {GATEWAY} variable for `RemoteNickFormat` #501. See `RemoteNickFormat` in matterbridge.toml.sample.
+* general: New {CHANNEL} variable for `RemoteNickFormat` #515. See `RemoteNickFormat` in matterbridge.toml.sample.
+* general: Remove hyphens when auto-loading envvars from viper config #545
+* discord: You can mention discord-users from other bridges.
+* slack: Preserve threading between Slack instances #529. See `PreserveThreading` in matterbridge.toml.sample.
+* slack: Add ability to show when user is typing across Slack bridges #559
+* slack: Add rate-limiting
+* mattermost: Add support for mattermost [matterbridge plugin](https://github.com/matterbridge/mattermost-plugin)
+* api: Respond with message on connect. #550
+* api: Add a health endpoint to API #554
+
+## Bugfix
+* slack: Refactoring and making it better.
+* slack: Restore file comments coming from Slack. #583
+* irc: Fix IRC line splitting. #587
+* mattermost: Fix cookie and personal token behaviour. #530
+* mattermost: Check for expiring sessions and reconnect.
+
+
+## Contributors
+This release couldn't exist without the following contributors:
+@jheiselman, @NikkyAI, @dajohi, @NetwideRogue, @patcon and @Helcaraxan
+
+Special thanks to @Helcaraxan and @patcon for their work on improving/refactoring slack.
+
+# v1.11.3
+
+## Bugfix
+* mattermost: fix panic when using webhooks #491
+* slack: fix issues regarding API changes and lots of channels #489
+* irc: fix rejoin on kick problem #488
+
+# v1.11.2
+
+## Bugfix
+* slack: fix slack API changes regarding to files/images
+
+# v1.11.1
+
+## New features
+* slack: Add support for slack channels by ID. Closes #436
+* discord: Clip too long messages sent to discord (discord). Closes #440
+
+## Bugfix
+* general: fix possible panic on downloads that are too big #448
+* general: Fix avatar uploads to work with MediaDownloadPath. Closes #454
+* discord: allow receiving of topic changes/channel leave/joins from other bridges through the webhook
+* discord: Add a space before url in file uploads (discord). Closes #461
+* discord:  Skip empty messages being sent with the webhook (discord). #469
+* mattermost: Use nickname instead of username if defined (mattermost). Closes #452
+* irc: Stop numbers being stripped after non-color control codes (irc) (#465)
+* slack: Use UserID to look for avatar instead of username (slack). Closes #472
+
+# v1.11.0
+
+## New features
+* general: Add config option MediaDownloadPath (#443). See `MediaDownloadPath` in matterbridge.toml.sample
+* general: Add MediaDownloadBlacklist option. Closes #442. See `MediaDownloadBlacklist` in matterbridge.toml.sample
+* xmpp: Add channel password support for XMPP (#451)
+* xmpp: Add message correction support for XMPP (#437)
+* telegram: Add support for MessageFormat=htmlnick (telegram). #444
+* mattermost: Add support for mattermost 5.x
+
+## Enhancements
+* slack: Add Title from attachment slack message (#446)
+* irc: Prevent white or black color codes (irc) (#434)
+
+## Bugfix
+* slack: Fix regexp in replaceMention (slack). (#435)
+* irc: Reconnect on quit. (irc) See #431 (#445)
+* sshchat: Ignore messages from ourself. (sshchat) Closes #439
+
+# v1.10.1
+## New features
+* irc: Colorize username sent to IRC using its crc32 IEEE checksum (#423). See `ColorNicks` in matterbridge.toml.sample
+* irc: Add support for CJK to/from utf-8 (irc). #400
+* telegram: Add QuoteFormat option (telegram). Closes #413. See `QuoteFormat` in matterbridge.toml.sample
+* xmpp: Send attached files to XMPP in different message with OOB data and without body (#421)
+
+## Bugfix
+* general: updated irc/xmpp/telegram libraries
+* mattermost/slack/rocketchat: Fix iconurl regression. Closes #430
+* mattermost/slack: Use uuid instead of userid. Fixes #429
+* slack: Avatar spoofing from Slack to Discord with uppercase in nick doesn't work (#433)
+* irc: Fix format string bug (irc) (#428)
+
+# v1.10.0
+## New features
+* general: Add support for reloading all settings automatically after changing config except connection and gateway configuration. Closes #373
+* zulip: New protocol support added (https://zulipchat.com)
+
+## Enhancements
+* general: Handle file comment better
+* steam: Handle file uploads to mediaserver (steam)
+* slack: Properly set Slack user who initiated slash command (#394)
+
+## Bugfix
+* general: Use only alphanumeric for file uploads to mediaserver. Closes #416
+* general: Fix crash on invalid filenames
+* general: Fix regression in ReplaceMessages and ReplaceNicks. Closes #407
+* telegram: Fix possible nil when using channels (telegram). #410
+* telegram: Fix panic (telegram). Closes #410
+* telegram: Handle channel posts correctly
+* mattermost: Update GetFileLinks to API_V4
+
+# v1.9.1
+## New features
+* telegram: Add QuoteDisable option (telegram). Closes #399. See QuoteDisable in matterbridge.toml.sample
+## Enhancements
+* discord: Send mediaserver link to Discord in Webhook mode (discord) (#405)
+* mattermost: Print list of valid team names when team not found (#390)
+* slack: Strip markdown URLs with blank text (slack) (#392)
+## Bugfix
+* slack/mattermost: Make our callbackid more unique. Fixes issue with running multiple matterbridge on the same channel (slack,mattermost)
+* telegram: fix newlines in multiline messages #399
+* telegram: Revert #378
+
+# v1.9.0 (the refactor release)
+## New features
+* general: better debug messages
+* general: better support for environment variables override
+* general: Ability to disable sending join/leave messages to other gateways. #382
+* slack: Allow Slack @usergroups to be parsed as human-friendly names #379
+* slack: Provide better context for shared posts from Slack<=>Slack enhancement #369
+* telegram: Convert nicks automatically into HTML when MessageFormat is set to HTML #378
+* irc: Add DebugLevel option 
+
+## Bugfix
+* slack: Ignore restricted_action on channel join (slack). Closes #387
+* slack: Add slack attachment support to matterhook
+* slack: Update userlist on join (slack). Closes #372
+
+# v1.8.0
+## New features
+* general: Send chat notification if media is too big to be re-uploaded to MediaServer. See #359
+* general: Download (and upload) avatar images from mattermost and telegram when mediaserver is configured. Closes #362
+* general: Add label support in RemoteNickFormat
+* general: Prettier info/debug log output
+* mattermost: Download files and reupload to supported bridges (mattermost). Closes #357
+* slack: Add ShowTopicChange option. Allow/disable topic change messages (currently only from slack). Closes #353
+* slack: Add support for file comments (slack). Closes #346
+* telegram: Add comment to file upload from telegram. Show comments on all bridges. Closes #358
+* telegram: Add markdown support (telegram). #355
+* api: Give api access to whole config.Message (and events). Closes #374
+
+## Bugfix
+* discord: Check for a valid WebhookURL (discord). Closes #367
+* discord: Fix role mention replace issues
+* irc: Truncate messages sent to IRC based on byte count (#368)
+* mattermost: Add file download urls also to mattermost webhooks #356
+* telegram: Fix panic on nil messages (telegram). Closes #366
+* telegram: Fix the UseInsecureURL text (telegram). Closes #184
+
+# v1.7.1
+## Bugfix
+* telegram: Enable Long Polling for Telegram. Reduces bandwidth consumption. (#350)
+
+# v1.7.0
+## New features
+* matrix: Add support for deleting messages from/to matrix (matrix). Closes #320
+* xmpp: Ignore <subject> messages (xmpp). #272
+* irc: Add twitch support (irc) to README / wiki
+
+## Bugfix
+* general: Change RemoteNickFormat replacement order. Closes #336
+* general: Make edits/delete work for bridges that gets reused. Closes #342
+* general: Lowercase irc channels in config. Closes #348
+* matrix: Fix possible panics (matrix). Closes #333
+* matrix: Add an extension to images without one (matrix). #331
+* api: Obey the Gateway value from the json (api). Closes #344
+* xmpp: Print only debug messages when specified (xmpp). Closes #345
+* xmpp: Allow xmpp to receive the extra messages (file uploads) when text is empty. #295
+
+# v1.6.3
+## Bugfix
+* slack: Fix connection issues
+* slack: Add more debug messages
+* irc: Convert received IRC channel names to lowercase. Fixes #329 (#330)
+
+# v1.6.2
+## Bugfix
+* mattermost: Crashes while connecting to Mattermost (regression). Closes #327
+
+# v1.6.1
+## Bugfix
+* general: Display of nicks not longer working (regression). Closes #323
+
+# v1.6.0
+## New features
+* sshchat: New protocol support added (https://github.com/shazow/ssh-chat)
+* general: Allow specifying maximum download size of media using MediaDownloadSize (slack,telegram,matrix)
+* api: Add (simple, one listener) long-polling support (api). Closes #307
+* telegram: Add support for forwarded messages. Closes #313
+* telegram: Add support for Audio/Voice files (telegram). Closes #314
+* irc: Add RejoinDelay option. Delay to rejoin after channel kick (irc). Closes #322
+
+## Bugfix
+* telegram: Also use HTML in edited messages (telegram). Closes #315
+* matrix: Fix panic (matrix). Closes #316
+
+# v1.5.1
+
+## Bugfix
+* irc: Fix irc ACTION regression (irc). Closes #306
+* irc: Split on UTF-8 for MessageSplit (irc). Closes #308
+
+# v1.5.0
+## New features
+* general: remote mediaserver support. See MediaServerDownload and MediaServerUpload in matterbridge.toml.sample
+  more information on https://github.com/42wim/matterbridge/wiki/Mediaserver-setup-%5Badvanced%5D
+* general: Add support for ReplaceNicks using regexp to replace nicks. Closes #269 (see matterbridge.toml.sample)
+* general: Add support for ReplaceMessages using regexp to replace messages. #269 (see matterbridge.toml.sample)
+* irc: Add MessageSplit option to split messages on MessageLength (irc). Closes #281
+* matrix: Add support for uploading images/video (matrix). Closes #302
+* matrix: Add support for uploaded images/video (matrix) 
+
+## Bugfix
+* telegram: Add webp extension to stickers if necessary (telegram)
+* mattermost: Break when re-login fails (mattermost)
+
+# v1.4.1
+## Bugfix
+* telegram: fix issue with uploading for images/documents/stickers
+* slack: remove double messages sent to other bridges when uploading files
+* irc: Fix strict user handling of girc (irc). Closes #298 
+
+# v1.4.0
+## Breaking changes
+* general: `[general]` settings don't override the specific bridge settings
+
+## New features
+* irc: Replace sorcix/irc and go-ircevent with girc, this should be give better reconnects
+* steam: Add support for bridging to individual steam chats. (steam) (#294)
+* telegram: Download files from telegram and reupload to supported bridges (telegram). #278
+* slack: Add support to upload files to slack, from bridges with private urls like slack/mattermost/telegram. (slack)
+* discord: Add support to upload files to discord, from bridges with private urls like slack/mattermost/telegram. (discord)
+* general: Add systemd service file (#291)
+* general: Add support for DEBUG=1 envvar to enable debug. Closes #283
+* general: Add StripNick option, only allow alphanumerical nicks. Closes #285
+
+## Bugfix
+* gitter: Use room.URI instead of room.Name. (gitter) (#293)
+* slack: Allow slack messages with variables (eg. @here) to be formatted correctly. (slack) (#288)
+* slack: Resolve slack channel to human-readable name. (slack) (#282)
+* slack: Use DisplayName instead of deprecated username (slack). Closes #276
+* slack: Allowed Slack bridge to extract simpler link format. (#287)
+* irc: Strip irc colors correct, strip also ctrl chars (irc)
+
+# v1.3.1
+## New features
+* Support mattermost 4.3.0 and every other 4.x as api4 should be stable (mattermost)
+## Bugfix
+* Use bot username if specified (slack). Closes #273
+
+# v1.3.0
+## New features
+* Relay slack_attachments from mattermost to slack (slack). Closes #260
+* Add support for quoting previous message when replying (telegram). #237
+* Add support for Quakenet auth (irc). Closes #263
+* Download files (max size 1MB) from slack and reupload to mattermost (slack/mattermost). Closes #255
+
+## Enhancements
+* Backoff for 60 seconds when reconnecting too fast (irc) #267
+* Use override username if specified (mattermost). #260
+
+## Bugfix
+* Try to not forward slack unfurls. Closes #266
+
+# v1.2.0
+## Breaking changes
+* If you're running a discord bridge, update to this release before 16 october otherwise
+it will stop working. (see https://discordapp.com/developers/docs/reference)
+
+## New features
+* general: Add delete support. (actually delete the messages on bridges that support it)
+    (mattermost,discord,gitter,slack,telegram)
+
+## Bugfix
+* Do not break messages on newline (slack). Closes #258 
+* Update telegram library
+* Update discord library (supports v6 API now). Old API is deprecated on 16 October
+
+# v1.1.2
+## New features
+* general: also build darwin binaries
+* mattermost: add support for mattermost 4.2.x
+
+## Bugfix 
+* mattermost: Send images when text is empty regression. (mattermost). Closes #254
+* slack: also send the first messsage after connect. #252
+
+# v1.1.1
+## Bugfix
+* mattermost: fix public links
+
+# v1.1.0
+## New features
+* general: Add better editing support. (actually edit the messages on bridges that support it)
+	(mattermost,discord,gitter,slack,telegram)
+* mattermost: use API v4 (removes support for mattermost < 3.8)
+* mattermost: add support for personal access tokens (since mattermost 4.1)
+	Use ```Token="yourtoken"``` in mattermost config
+	See https://docs.mattermost.com/developer/personal-access-tokens.html for more info
+* matrix: Relay notices (matrix). Closes #243
+* irc: Add a charset option. Closes #247
+
+## Bugfix
+* slack: Handle leave/join events (slack). Closes #246
+* slack: Replace mentions from other bridges. (slack). Closes #233
+* gitter: remove ZWSP after messages
+
+# v1.0.1
+## New features
+* mattermost: add support for mattermost 4.1.x
+* discord: allow a webhookURL per channel #239
+
+# v1.0.0
+## New features
+* general: Add action support for slack,mattermost,irc,gitter,matrix,xmpp,discord. #199
+* discord: Shows the username instead of the server nickname #234
+
+# v1.0.0-rc1
+## New features
+* general: Add action support for slack,mattermost,irc,gitter,matrix,xmpp,discord. #199
+
+## Bugfix
+* general: Handle same account in multiple gateways better
+* mattermost: ignore edited messages with reactions
+* mattermost: Fix double posting of edited messages by using lru cache
+* irc: update vendor
+
+# v0.16.3
+## Bugfix
+* general: Fix in/out logic. Closes #224 
+* general: Fix message modification
+* slack: Disable message from other bots when using webhooks (slack)
+* mattermost: Return better error messages on mattermost connect
+
+# v0.16.2
+## New features
+* general: binary builds against latest commit are now available on https://bintray.com/42wim/nightly/Matterbridge/_latestVersion
+
+## Bugfix
+* slack: fix loop introduced by relaying message of other bots #219
+* slack: Suppress parent message when child message is received #218
+* mattermost: fix regression when using webhookurl and webhookbindaddress #221
+
+# v0.16.1
+## New features
+* slack: also relay messages of other bots #213
+* mattermost: show also links if public links have not been enabled.
+
+## Bugfix
+* mattermost, slack: fix connecting logic #216
+
+# v0.16.0
+## Breaking Changes
+* URL,UseAPI,BindAddress is deprecated. Your config has to be updated.
+  * URL => WebhookURL
+  * BindAddress => WebhookBindAddress
+  * UseAPI => removed 
+  This change allows you to specify a WebhookURL and a token (slack,discord), so that
+  messages will be sent with the webhook, but received via the token (API)
+  If you have not specified WebhookURL and WebhookBindAddress the API (login or token) 
+  will be used automatically. (no need for UseAPI)
+
+## New features
+* mattermost: add support for mattermost 4.0
+* steam: New protocol support added (http://store.steampowered.com/)
+* discord: Support for embedded messages (sent by other bots)
+  Shows title, description and URL of embedded messages (sent by other bots)
+  To enable add ```ShowEmbeds=true``` to your discord config 
+* discord: ```WebhookURL``` posting support added (thanks @saury07) #204
+  Discord API does not allow to change the name of the user posting, but webhooks does.
+
+## Changes
+* general: all :emoji: will be converted to unicode, providing consistent emojis across all bridges
+* telegram: Add ```UseInsecureURL``` option for telegram (default false)
+  WARNING! If enabled this will relay GIF/stickers/documents and other attachments as URLs
+  Those URLs will contain your bot-token. This may not be what you want.
+  For now there is no secure way to relay GIF/stickers/documents without seeing your token.
+
+## Bugfix
+* irc: detect charset and try to convert it to utf-8 before sending it to other bridges. #209 #210
+* slack: Remove label from URLs (slack). #205
+* slack: Relay <>& correctly to other bridges #215
+* steam: Fix channel id bug in steam (channels are off by 0x18000000000000)
+* general: various improvements
+* general: samechannelgateway now relays messages correct again #207
+
+
+# v0.16.0-rc2
+## Breaking Changes
+* URL,UseAPI,BindAddress is deprecated. Your config has to be updated.
+  * URL => WebhookURL
+  * BindAddress => WebhookBindAddress
+  * UseAPI => removed 
+  This change allows you to specify a WebhookURL and a token (slack,discord), so that
+  messages will be sent with the webhook, but received via the token (API)
+  If you have not specified WebhookURL and WebhookBindAddress the API (login or token) 
+  will be used automatically. (no need for UseAPI)
+
+## Bugfix since rc1
+* steam: Fix channel id bug in steam (channels are off by 0x18000000000000)
+* telegram: Add UseInsecureURL option for telegram (default false)
+  WARNING! If enabled this will relay GIF/stickers/documents and other attachments as URLs
+  Those URLs will contain your bot-token. This may not be what you want.
+  For now there is no secure way to relay GIF/stickers/documents without seeing your token.
+* irc: detect charset and try to convert it to utf-8 before sending it to other bridges. #209 #210
+* general: various improvements
+
+
+# v0.16.0-rc1
+## Breaking Changes
+* URL,UseAPI,BindAddress is deprecated. Your config has to be updated.
+  * URL => WebhookURL
+  * BindAddress => WebhookBindAddress
+  * UseAPI => removed 
+  This change allows you to specify a WebhookURL and a token (slack,discord), so that
+  messages will be sent with the webhook, but received via the token (API)
+  If you have not specified WebhookURL and WebhookBindAddress the API (login or token) 
+  will be used automatically. (no need for UseAPI)
+
+## New features
+* steam: New protocol support added (http://store.steampowered.com/)
+* discord: WebhookURL posting support added (thanks @saury07) #204
+  Discord API does not allow to change the name of the user posting, but webhooks does.
+
+## Bugfix
+* general: samechannelgateway now relays messages correct again #207
+* slack: Remove label from URLs (slack). #205
+
+# v0.15.0
+## New features
+* general: add option IgnoreMessages for all protocols (see mattebridge.toml.sample)
+  Messages matching these regexp will be ignored and not sent to other bridges
+  e.g. IgnoreMessages="^~~ badword"
+* telegram: add support for sticker/video/photo/document #184
+
+## Changes
+* api: add userid to each message #200
+
+## Bugfix
+* discord: fix crash in memberupdate #198
+* mattermost: Fix incorrect behaviour of EditDisable (mattermost). Fixes #197 
+* irc: Do not relay join/part of ourselves (irc). Closes #190 
+* irc: make reconnections more robust. #153
+* gitter: update library, fixes possible crash
+
+# v0.14.0
+## New features
+* api: add token authentication
+* mattermost: add support for mattermost 3.10.0
+
+## Changes
+* api: gateway name is added in JSON messages
+* api: lowercase JSON keys
+* api: channel name isn't needed in config #195
+
+## Bugfix
+* discord: Add hashtag to channelname (when translating from id) (discord)
+* mattermost: Fix a panic. #186
+* mattermost: use teamid cache if possible. Fixes a panic
+* api: post valid json. #185
+* api: allow reuse of api in different gateways. #189
+* general: Fix utf-8 issues for {NOPINGNICK}. #193
+
+# v0.13.0
+## New features
+* irc: Limit message length. ```MessageLength=400```
+  Maximum length of message sent to irc server. If it exceeds <message clipped> will be add to the message.
+* irc: Add NOPINGNICK option. 
+  The string "{NOPINGNICK}" (case sensitive) will be replaced by the actual nick / username, but with a ZWSP inside the nick, so the irc user with the same nick won't get pinged.   
+  See https://github.com/42wim/matterbridge/issues/175 for more information
+
+## Bugfix
+* slack: Fix sending to different channels on same account (slack). Closes #177
+* telegram: Fix incorrect usernames being sent. Closes #181
+
+
+# v0.12.1
+## New features
+* telegram: Add UseFirstName option (telegram). Closes #144
+* matrix: Add NoHomeServerSuffix. Option to disable homeserver on username (matrix). Closes #160.
+
+## Bugfix
+* xmpp: Add Compatibility for Cisco Jabber (xmpp) (#166)
+* irc: Fix JoinChannel argument to use IRC channel key (#172)
+* discord: Fix possible crash on nil (discord)
+* discord: Replace long ids in channel metions (discord). Fixes #174
+
+# v0.12.0
+## Changes
+* general: edited messages are now being sent by default on discord/mattermost/telegram/slack. See "New Features"
+
+## New features
+* general: add support for edited messages. 
+  Add new keyword EditDisable (false/true), default false. Which means by default edited messages will be sent to other bridges.
+  Add new keyword EditSuffix , default "". You can change this eg to "(edited)", this will be appended to every edit message.
+* mattermost: support mattermost v3.9.x
+* general: Add support for HTTP{S}_PROXY env variables (#162)
+* discord: Strip custom emoji metadata (discord). Closes #148
+
+## Bugfix
+* slack: Ignore error on private channel join (slack) Fixes #150 
+* mattermost: fix crash on reconnects when server is down. Closes #163
+* irc: Relay messages starting with ! (irc). Closes #164
+
+# v0.11.0
+## New features
+* general: reusing the same account on multiple gateways now also reuses the connection.
+  This is particuarly useful for irc. See #87
+* general: the Name is now REQUIRED and needs to be UNIQUE for each gateway configuration
+* telegram:  Support edited messages (telegram). See #141
+* mattermost: Add support for showing/hiding join/leave messages from mattermost. Closes #147
+* mattermost: Reconnect on session removal/timeout (mattermost)
+* mattermost: Support mattermost v3.8.x
+* irc:  Rejoin channel when kicked (irc).
+
+## Bugfix
+* mattermost: Remove space after nick (mattermost). Closes #142
+* mattermost: Modify iconurl correctly (mattermost).
+* irc: Fix join/leave regression (irc)
+
+# v0.10.3
+## Bugfix
+* slack: Allow bot tokens for now without warning (slack). Closes #140 (fixes user_is_bot message on channel join)
+
+# v0.10.2
+## New features
+* general: gops agent added. Allows for more debugging. See #134
+* general: toml inline table support added for config file
+
+## Bugfix
+* all: vendored libs updated
+
+## Changes
+* general: add more informative messages on startup
+
+# v0.10.1
+## Bugfix
+* gitter: Fix sending messages on new channel join.
+
+# v0.10.0
+## New features
+* matrix: New protocol support added (https://matrix.org)
+* mattermost: works with mattermost release v3.7.0
+* discord: Replace role ids in mentions to role names (discord). Closes #133
+
+## Bugfix
+* mattermost: Add ReadTimeout to close lingering connections (mattermost). See #125
+* gitter: Join rooms not already joined by the bot (gitter). See #135
+* general: Fail when bridge is unable to join a channel (general)
+
+## Changes
+* telegram: Do not use HTML parsemode by default. Set ```MessageFormat="HTML"``` to use it. Closes #126
+
+# v0.9.3
+## New features
+* API: rest interface to read / post messages (see API section in matterbridge.toml.sample)
+
+## Bugfix
+* slack: fix receiving messages from private channels #118
+* slack: fix echo when using webhooks #119
+* mattermost: reconnecting should work better now
+* irc: keeps reconnecting (every 60 seconds) now after ping timeout/disconnects.
+
+# v0.9.2
+## New features
+* slack: support private channels #118
+
+## Bugfix
+* general: make ignorenicks work again #115
+* telegram: fix receiving from channels and groups #112
+* telegram: use html for username
+* telegram: use ```unknown``` as username when username is not visible.
+* irc: update vendor (fixes some crashes) #117
+* xmpp: fix tls by setting ServerName #114
+
+# v0.9.1
+## New features
+* Rocket.Chat: New protocol support added (https://rocket.chat)
+* irc: add channel key support #27 (see matterbrige.toml.sample for example)
+* xmpp: add SkipTLSVerify #106
+
+## Bugfix
+* general: Exit when a bridge fails to start
+* mattermost: Check errors only on first connect. Keep retrying after first connection succeeds. #95
+* telegram: fix missing username #102
+* slack: do not use API functions in webhook (slack) #110
+
+# v0.9.0
+## New features
+* Telegram: New protocol support added (https://telegram.org)
+* Hipchat: Add sample config to connect to hipchat via xmpp
+* discord: add "Bot " tag to discord tokens automatically
+* slack: Add support for dynamic Iconurl #43
+* general: Add ```gateway.inout``` config option for bidirectional bridges #85
+* general: Add ```[general]``` section so that ```RemoteNickFormat``` can be set globally
+
+## Bugfix
+* general: when using samechannelgateway NickFormat get doubled by the NICK #77
+* general: fix ShowJoinPart for messages from irc bridge #72
+* gitter: fix high cpu usage #89
+* irc: fix !users command #78
+* xmpp: fix keepalive
+* xmpp: do not relay delayed/empty messages
+* slack: Replace id-mentions to usernames #86 
+* mattermost: fix public links not working (API changes)
+
+# v0.8.1
+## Bugfix
+* general: when using samechannelgateway NickFormat get doubled by the NICK #77
+* irc: fix !users command #78
+
+# v0.8.0
+Release because of breaking mattermost API changes
+## New features
+* Supports mattermost v3.5.0
+
+# v0.7.1
+## Bugfix
+* general: when using samechannelgateway NickFormat get doubled by the NICK #77
+* irc: fix !users command #78
+
+# v0.7.0
+## Breaking config changes from 0.6 to 0.7
+Matterbridge now uses TOML configuration (https://github.com/toml-lang/toml)
+See matterbridge.toml.sample for an example
+
+## New features
+### General
+* Allow for bridging the same type of bridge, which means you can eg bridge between multiple mattermosts.
+* The bridge is now actually a gateway which has support multiple in and out bridges. (and supports multiple gateways).
+* Discord support added. See matterbridge.toml.sample for more information.
+* Samechannelgateway support added, easier configuration for 1:1 mapping of protocols with same channel names. #35
+* Support for override from environment variables. #50
+* Better debugging output.
+* discord: New protocol support added. (http://www.discordapp.com)
+* mattermost: Support attachments.
+* irc: Strip colors. #33
+* irc: Anti-flooding support. #40
+* irc: Forward channel notices.
+
+## Bugfix
+* irc: Split newlines. #37
+* irc: Only respond to nick related notices from nickserv.
+* irc: Ignore queries send to the bot.
+* irc: Ignore messages from ourself.
+* irc: Only output the "users on irc information" when asked with "!users".
+* irc: Actually wait until connection is complete before saying it is.
+* mattermost: Fix mattermost channel joins.
+* mattermost: Drop messages not from our team.
+* slack: Do not panic on non-existing channels.
+* general: Exit when a bridge fails to start.
+
 # v0.6.1
 ## New features
 * Slack support added.  See matterbridge.conf.sample for more information
+
 ## Bugfix
 * Fix 100% CPU bug on incorrect closed connections
 

ci/bintray.sh

@@ -0,0 +1,27 @@
+#!/bin/bash
+go version | grep go1.11 || exit
+VERSION=$(git describe --tags)
+mkdir ci/binaries
+GOOS=windows GOARCH=amd64 go build -ldflags "-s -w -X main.githash=$(git log --pretty=format:'%h' -n 1)" -o ci/binaries/matterbridge-$VERSION-windows-amd64.exe
+GOOS=linux GOARCH=amd64 go build -ldflags "-s -w -X main.githash=$(git log --pretty=format:'%h' -n 1)" -o ci/binaries/matterbridge-$VERSION-linux-amd64
+GOOS=linux GOARCH=arm go build -ldflags "-s -w -X main.githash=$(git log --pretty=format:'%h' -n 1)" -o ci/binaries/matterbridge-$VERSION-linux-arm
+GOOS=darwin GOARCH=amd64 go build -ldflags "-s -w -X main.githash=$(git log --pretty=format:'%h' -n 1)" -o ci/binaries/matterbridge-$VERSION-darwin-amd64
+cd ci
+cat > deploy.json <<EOF
+{
+    "package": {
+        "name": "Matterbridge",
+        "repo": "nightly",
+        "subject": "42wim"
+    },
+    "version": {
+        "name": "$VERSION"
+    },
+    "files":
+        [
+        {"includePattern": "ci/binaries/(.*)", "uploadPattern":"\$1"}
+        ],
+    "publish": true
+}
+EOF
+

contrib/api.yaml

@@ -0,0 +1,210 @@
+openapi: 3.0.0
+info:
+  contact: {}
+  description: A read/write API for the Matterbridge chat bridge.
+  license:
+    name: Apache 2.0
+    url: 'https://github.com/42wim/matterbridge/blob/master/LICENSE'
+  title: Matterbridge API
+  version: "0.1.0-oas3"
+paths:
+  /health:
+    get:
+      responses:
+        '200':
+          description: OK
+          content:
+            '*/*':
+              schema:
+                type: string
+      summary: Checks if the server is alive.
+  /message:
+    post:
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                $ref: '#/components/schemas/config.OutgoingMessageResponse'
+      summary: Create a message
+      requestBody:
+        content:
+          application/json:
+            schema:
+              $ref: '#/components/schemas/config.OutgoingMessage'
+        description: Message object to create
+        required: true
+  /messages:
+    get:
+      responses:
+        '200':
+          description: OK
+          content:
+            application/json:
+              schema:
+                items:
+                  $ref: '#/components/schemas/config.IncomingMessage'
+                type: array
+      security:
+        - ApiKeyAuth: []
+      summary: List new messages
+  /stream:
+    get:
+      responses:
+        '200':
+          description: OK
+          content:
+            application/x-json-stream:
+              schema:
+                $ref: '#/components/schemas/config.IncomingMessage'
+      summary: Stream realtime messages
+servers:
+  - url: /api
+components:
+  securitySchemes:
+    bearerAuth:
+      type: http
+      scheme: bearer
+  schemas:
+    config.IncomingMessage:
+      properties:
+        avatar:
+          description: URL to an avatar image
+          example: >-
+            https://secure.gravatar.com/avatar/1234567890abcdef1234567890abcdef.jpg
+          type: string
+        event:
+          description: >-
+            A specific matterbridge event. (see
+            https://github.com/42wim/matterbridge/blob/master/bridge/config/config.go#L16)
+          type: string
+        gateway:
+          description: Name of the gateway as configured in matterbridge.toml
+          example: mygateway
+          type: string
+        text:
+          description: Content of the message
+          example: 'Testing, testing, 1-2-3.'
+          type: string
+        username:
+          description: Human-readable username
+          example: alice
+          type: string
+        account:
+          description: Unique account name of format "[protocol].[slug]" as defined in matterbridge.toml 
+          example: slack.myteam
+          type: string
+        channel:
+          description: Human-readable channel name of sending bridge
+          example: test-channel
+          type: string
+        id:
+          description: Unique ID of message on the gateway
+          example: slack 1541361213.030700
+          type: string
+        parent_id:
+          description: Unique ID of a parent message, if threaded
+          example: slack 1541361213.030700
+          type: string
+        protocol:
+          description: Chat protocol of the sending bridge
+          example: slack
+          type: string
+        timestamp:
+          description: Timestamp of the message
+          example: "1541361213.030700"
+          type: string
+        userid:
+          description: Userid on the sending bridge
+          example: U4MCXJKNC
+          type: string
+        extra:
+          description: Extra data that doesn't fit in other fields (eg base64 encoded files)
+          type: object
+    config.OutgoingMessage:
+      properties:
+        avatar:
+          description: URL to an avatar image
+          example: >-
+            https://secure.gravatar.com/avatar/1234567890abcdef1234567890abcdef.jpg
+          type: string
+        event:
+          description: >-
+            A specific matterbridge event. (see
+            https://github.com/42wim/matterbridge/blob/master/bridge/config/config.go#L16)
+          example: ""
+          type: string
+        gateway:
+          description: Name of the gateway as configured in matterbridge.toml
+          example: mygateway
+          type: string
+        text:
+          description: Content of the message
+          example: 'Testing, testing, 1-2-3.'
+          type: string
+        username:
+          description: Human-readable username
+          example: alice
+          type: string
+      type: object
+      required:
+        - gateway
+        - text
+        - username
+    config.OutgoingMessageResponse:
+      properties:
+        avatar:
+          description: URL to an avatar image
+          example: >-
+            https://secure.gravatar.com/avatar/1234567890abcdef1234567890abcdef.jpg
+          type: string
+        event:
+          description: >-
+            A specific matterbridge event. (see
+            https://github.com/42wim/matterbridge/blob/master/bridge/config/config.go#L16)
+          example: ""
+          type: string
+        gateway:
+          description: Name of the gateway as configured in matterbridge.toml
+          example: mygateway
+          type: string
+        text:
+          description: Content of the message
+          example: 'Testing, testing, 1-2-3.'
+          type: string
+        username:
+          description: Human-readable username
+          example: alice
+          type: string
+        account:
+          description: fixed api account 
+          example: api.local
+          type: string
+        channel:
+          description: fixed api channel 
+          example: api
+          type: string
+        id:
+          example: ""
+          type: string
+        parent_id:
+          example: ""
+          type: string
+        protocol:
+          description: fixed api protocol
+          example: api
+          type: string
+        timestamp:
+          description: Timestamp of the message
+          example: "1541361213.030700"
+          type: string
+        userid:
+          example: ""
+          type: string
+        extra:
+          example: null
+          type: object
+      type: object
+security:
+  - bearerAuth: []

contrib/matterbridge.service

@@ -0,0 +1,11 @@
+[Unit]
+Description=matterbridge
+After=network.target
+
+[Service]
+ExecStart=/usr/bin/matterbridge -conf /etc/matterbridge/bridge.toml
+User=matterbridge
+Group=matterbridge
+
+[Install]
+WantedBy=multi-user.target

docker/arm/Dockerfile

@@ -0,0 +1,9 @@
+FROM alpine:edge as certs
+RUN apk --update add ca-certificates
+
+FROM scratch
+ARG VERSION=1.12.3
+COPY --from=certs /etc/ssl/certs/ca-certificates.crt /etc/ssl/certs/ca-certificates.crt
+ADD https://github.com/42wim/matterbridge/releases/download/v${VERSION}/matterbridge-linux-arm /bin/matterbridge
+RUN chmod +x /bin/matterbridge
+ENTRYPOINT ["/bin/matterbridge"]

gateway/bridgemap/bridgemap.go

@@ -0,0 +1,35 @@
+package bridgemap
+
+import (
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/api"
+	"github.com/42wim/matterbridge/bridge/discord"
+	"github.com/42wim/matterbridge/bridge/gitter"
+	"github.com/42wim/matterbridge/bridge/irc"
+	"github.com/42wim/matterbridge/bridge/matrix"
+	"github.com/42wim/matterbridge/bridge/mattermost"
+	"github.com/42wim/matterbridge/bridge/rocketchat"
+	"github.com/42wim/matterbridge/bridge/slack"
+	"github.com/42wim/matterbridge/bridge/sshchat"
+	"github.com/42wim/matterbridge/bridge/steam"
+	"github.com/42wim/matterbridge/bridge/telegram"
+	"github.com/42wim/matterbridge/bridge/xmpp"
+	"github.com/42wim/matterbridge/bridge/zulip"
+)
+
+var FullMap = map[string]bridge.Factory{
+	"api":          api.New,
+	"discord":      bdiscord.New,
+	"gitter":       bgitter.New,
+	"irc":          birc.New,
+	"mattermost":   bmattermost.New,
+	"matrix":       bmatrix.New,
+	"rocketchat":   brocketchat.New,
+	"slack-legacy": bslack.NewLegacy,
+	"slack":        bslack.New,
+	"sshchat":      bsshchat.New,
+	"steam":        bsteam.New,
+	"telegram":     btelegram.New,
+	"xmpp":         bxmpp.New,
+	"zulip":        bzulip.New,
+}

gateway/gateway.go

@@ -0,0 +1,431 @@
+package gateway
+
+import (
+	"os"
+	"regexp"
+	"strings"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/hashicorp/golang-lru"
+	"github.com/peterhellberg/emojilib"
+	"github.com/sirupsen/logrus"
+)
+
+type Gateway struct {
+	config.Config
+
+	Router         *Router
+	MyConfig       *config.Gateway
+	Bridges        map[string]*bridge.Bridge
+	Channels       map[string]*config.ChannelInfo
+	ChannelOptions map[string]config.ChannelOptions
+	Message        chan config.Message
+	Name           string
+	Messages       *lru.Cache
+}
+
+type BrMsgID struct {
+	br        *bridge.Bridge
+	ID        string
+	ChannelID string
+}
+
+var flog *logrus.Entry
+
+const (
+	apiProtocol = "api"
+)
+
+func New(cfg config.Gateway, r *Router) *Gateway {
+	flog = logrus.WithFields(logrus.Fields{"prefix": "gateway"})
+	gw := &Gateway{Channels: make(map[string]*config.ChannelInfo), Message: r.Message,
+		Router: r, Bridges: make(map[string]*bridge.Bridge), Config: r.Config}
+	cache, _ := lru.New(5000)
+	gw.Messages = cache
+	if err := gw.AddConfig(&cfg); err != nil {
+		flog.Errorf("AddConfig failed: %s", err)
+	}
+	return gw
+}
+
+// Find the canonical ID that the message is keyed under in cache
+func (gw *Gateway) FindCanonicalMsgID(protocol string, mID string) string {
+	ID := protocol + " " + mID
+	if gw.Messages.Contains(ID) {
+		return mID
+	}
+
+	// If not keyed, iterate through cache for downstream, and infer upstream.
+	for _, mid := range gw.Messages.Keys() {
+		v, _ := gw.Messages.Peek(mid)
+		ids := v.([]*BrMsgID)
+		for _, downstreamMsgObj := range ids {
+			if ID == downstreamMsgObj.ID {
+				return strings.Replace(mid.(string), protocol+" ", "", 1)
+			}
+		}
+	}
+	return ""
+}
+
+func (gw *Gateway) AddBridge(cfg *config.Bridge) error {
+	br := gw.Router.getBridge(cfg.Account)
+	if br == nil {
+		br = bridge.New(cfg)
+		br.Config = gw.Router.Config
+		br.General = &gw.BridgeValues().General
+		// set logging
+		br.Log = logrus.WithFields(logrus.Fields{"prefix": "bridge"})
+		brconfig := &bridge.Config{Remote: gw.Message, Log: logrus.WithFields(logrus.Fields{"prefix": br.Protocol}), Bridge: br}
+		// add the actual bridger for this protocol to this bridge using the bridgeMap
+		br.Bridger = gw.Router.BridgeMap[br.Protocol](brconfig)
+	}
+	gw.mapChannelsToBridge(br)
+	gw.Bridges[cfg.Account] = br
+	return nil
+}
+
+func (gw *Gateway) AddConfig(cfg *config.Gateway) error {
+	gw.Name = cfg.Name
+	gw.MyConfig = cfg
+	if err := gw.mapChannels(); err != nil {
+		flog.Errorf("mapChannels() failed: %s", err)
+	}
+	for _, br := range append(gw.MyConfig.In, append(gw.MyConfig.InOut, gw.MyConfig.Out...)...) {
+		br := br //scopelint
+		err := gw.AddBridge(&br)
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func (gw *Gateway) mapChannelsToBridge(br *bridge.Bridge) {
+	for ID, channel := range gw.Channels {
+		if br.Account == channel.Account {
+			br.Channels[ID] = *channel
+		}
+	}
+}
+
+func (gw *Gateway) reconnectBridge(br *bridge.Bridge) {
+	if err := br.Disconnect(); err != nil {
+		flog.Errorf("Disconnect() %s failed: %s", br.Account, err)
+	}
+	time.Sleep(time.Second * 5)
+RECONNECT:
+	flog.Infof("Reconnecting %s", br.Account)
+	err := br.Connect()
+	if err != nil {
+		flog.Errorf("Reconnection failed: %s. Trying again in 60 seconds", err)
+		time.Sleep(time.Second * 60)
+		goto RECONNECT
+	}
+	br.Joined = make(map[string]bool)
+	if err := br.JoinChannels(); err != nil {
+		flog.Errorf("JoinChannels() %s failed: %s", br.Account, err)
+	}
+}
+
+func (gw *Gateway) mapChannelConfig(cfg []config.Bridge, direction string) {
+	for _, br := range cfg {
+		if isAPI(br.Account) {
+			br.Channel = apiProtocol
+		}
+		// make sure to lowercase irc channels in config #348
+		if strings.HasPrefix(br.Account, "irc.") {
+			br.Channel = strings.ToLower(br.Channel)
+		}
+		if strings.HasPrefix(br.Account, "mattermost.") && strings.HasPrefix(br.Channel, "#") {
+			flog.Errorf("Mattermost channels do not start with a #: remove the # in %s", br.Channel)
+			os.Exit(1)
+		}
+		ID := br.Channel + br.Account
+		if _, ok := gw.Channels[ID]; !ok {
+			channel := &config.ChannelInfo{Name: br.Channel, Direction: direction, ID: ID, Options: br.Options, Account: br.Account,
+				SameChannel: make(map[string]bool)}
+			channel.SameChannel[gw.Name] = br.SameChannel
+			gw.Channels[channel.ID] = channel
+		} else {
+			// if we already have a key and it's not our current direction it means we have a bidirectional inout
+			if gw.Channels[ID].Direction != direction {
+				gw.Channels[ID].Direction = "inout"
+			}
+		}
+		gw.Channels[ID].SameChannel[gw.Name] = br.SameChannel
+	}
+}
+
+func (gw *Gateway) mapChannels() error {
+	gw.mapChannelConfig(gw.MyConfig.In, "in")
+	gw.mapChannelConfig(gw.MyConfig.Out, "out")
+	gw.mapChannelConfig(gw.MyConfig.InOut, "inout")
+	return nil
+}
+
+func (gw *Gateway) getDestChannel(msg *config.Message, dest bridge.Bridge) []config.ChannelInfo {
+	var channels []config.ChannelInfo
+
+	// for messages received from the api check that the gateway is the specified one
+	if msg.Protocol == apiProtocol && gw.Name != msg.Gateway {
+		return channels
+	}
+
+	// if source channel is in only, do nothing
+	for _, channel := range gw.Channels {
+		// lookup the channel from the message
+		if channel.ID == getChannelID(*msg) {
+			// we only have destinations if the original message is from an "in" (sending) channel
+			if !strings.Contains(channel.Direction, "in") {
+				return channels
+			}
+			continue
+		}
+	}
+	for _, channel := range gw.Channels {
+		if _, ok := gw.Channels[getChannelID(*msg)]; !ok {
+			continue
+		}
+
+		// do samechannelgateway flogic
+		if channel.SameChannel[msg.Gateway] {
+			if msg.Channel == channel.Name && msg.Account != dest.Account {
+				channels = append(channels, *channel)
+			}
+			continue
+		}
+		if strings.Contains(channel.Direction, "out") && channel.Account == dest.Account && gw.validGatewayDest(msg) {
+			channels = append(channels, *channel)
+		}
+	}
+	return channels
+}
+
+func (gw *Gateway) getDestMsgID(msgID string, dest *bridge.Bridge, channel config.ChannelInfo) string {
+	if res, ok := gw.Messages.Get(msgID); ok {
+		IDs := res.([]*BrMsgID)
+		for _, id := range IDs {
+			// check protocol, bridge name and channelname
+			// for people that reuse the same bridge multiple times. see #342
+			if dest.Protocol == id.br.Protocol && dest.Name == id.br.Name && channel.ID == id.ChannelID {
+				return strings.Replace(id.ID, dest.Protocol+" ", "", 1)
+			}
+		}
+	}
+	return ""
+}
+
+// ignoreTextEmpty returns true if we need to ignore a message with an empty text.
+func (gw *Gateway) ignoreTextEmpty(msg *config.Message) bool {
+	if msg.Text != "" {
+		return false
+	}
+	if msg.Event == config.EventUserTyping {
+		return false
+	}
+	// we have an attachment or actual bytes, do not ignore
+	if msg.Extra != nil &&
+		(msg.Extra["attachments"] != nil ||
+			len(msg.Extra["file"]) > 0 ||
+			len(msg.Extra[config.EventFileFailureSize]) > 0) {
+		return false
+	}
+	flog.Debugf("ignoring empty message %#v from %s", msg, msg.Account)
+	return true
+}
+
+// ignoreTexts returns true if msg.Text matches any of the input regexes.
+func (gw *Gateway) ignoreTexts(msg *config.Message, input []string) bool {
+	for _, entry := range input {
+		if entry == "" {
+			continue
+		}
+		// TODO do not compile regexps everytime
+		re, err := regexp.Compile(entry)
+		if err != nil {
+			flog.Errorf("incorrect regexp %s for %s", entry, msg.Account)
+			continue
+		}
+		if re.MatchString(msg.Text) {
+			flog.Debugf("matching %s. ignoring %s from %s", entry, msg.Text, msg.Account)
+			return true
+		}
+	}
+	return false
+}
+
+// ignoreNicks returns true if msg.Username matches any of the input regexes.
+func (gw *Gateway) ignoreNicks(msg *config.Message, input []string) bool {
+	// is the username in IgnoreNicks field
+	for _, entry := range input {
+		if msg.Username == entry {
+			flog.Debugf("ignoring %s from %s", msg.Username, msg.Account)
+			return true
+		}
+	}
+	return false
+}
+
+func (gw *Gateway) ignoreMessage(msg *config.Message) bool {
+	// if we don't have the bridge, ignore it
+	if _, ok := gw.Bridges[msg.Account]; !ok {
+		return true
+	}
+
+	igNicks := strings.Fields(gw.Bridges[msg.Account].GetString("IgnoreNicks"))
+	igMessages := strings.Fields(gw.Bridges[msg.Account].GetString("IgnoreMessages"))
+	if gw.ignoreTextEmpty(msg) || gw.ignoreNicks(msg, igNicks) || gw.ignoreTexts(msg, igMessages) {
+		return true
+	}
+
+	return false
+}
+
+func (gw *Gateway) modifyUsername(msg config.Message, dest *bridge.Bridge) string {
+	br := gw.Bridges[msg.Account]
+	msg.Protocol = br.Protocol
+	if dest.GetBool("StripNick") {
+		re := regexp.MustCompile("[^a-zA-Z0-9]+")
+		msg.Username = re.ReplaceAllString(msg.Username, "")
+	}
+	nick := dest.GetString("RemoteNickFormat")
+
+	// loop to replace nicks
+	for _, outer := range br.GetStringSlice2D("ReplaceNicks") {
+		search := outer[0]
+		replace := outer[1]
+		// TODO move compile to bridge init somewhere
+		re, err := regexp.Compile(search)
+		if err != nil {
+			flog.Errorf("regexp in %s failed: %s", msg.Account, err)
+			break
+		}
+		msg.Username = re.ReplaceAllString(msg.Username, replace)
+	}
+
+	if len(msg.Username) > 0 {
+		// fix utf-8 issue #193
+		i := 0
+		for index := range msg.Username {
+			if i == 1 {
+				i = index
+				break
+			}
+			i++
+		}
+		nick = strings.Replace(nick, "{NOPINGNICK}", msg.Username[:i]+"​"+msg.Username[i:], -1)
+	}
+
+	nick = strings.Replace(nick, "{BRIDGE}", br.Name, -1)
+	nick = strings.Replace(nick, "{PROTOCOL}", br.Protocol, -1)
+	nick = strings.Replace(nick, "{GATEWAY}", gw.Name, -1)
+	nick = strings.Replace(nick, "{LABEL}", br.GetString("Label"), -1)
+	nick = strings.Replace(nick, "{NICK}", msg.Username, -1)
+	nick = strings.Replace(nick, "{CHANNEL}", msg.Channel, -1)
+	return nick
+}
+
+func (gw *Gateway) modifyAvatar(msg config.Message, dest *bridge.Bridge) string {
+	iconurl := dest.GetString("IconURL")
+	iconurl = strings.Replace(iconurl, "{NICK}", msg.Username, -1)
+	if msg.Avatar == "" {
+		msg.Avatar = iconurl
+	}
+	return msg.Avatar
+}
+
+func (gw *Gateway) modifyMessage(msg *config.Message) {
+	// replace :emoji: to unicode
+	msg.Text = emojilib.Replace(msg.Text)
+
+	br := gw.Bridges[msg.Account]
+	// loop to replace messages
+	for _, outer := range br.GetStringSlice2D("ReplaceMessages") {
+		search := outer[0]
+		replace := outer[1]
+		// TODO move compile to bridge init somewhere
+		re, err := regexp.Compile(search)
+		if err != nil {
+			flog.Errorf("regexp in %s failed: %s", msg.Account, err)
+			break
+		}
+		msg.Text = re.ReplaceAllString(msg.Text, replace)
+	}
+
+	// messages from api have Gateway specified, don't overwrite
+	if msg.Protocol != apiProtocol {
+		msg.Gateway = gw.Name
+	}
+}
+
+// SendMessage sends a message (with specified parentID) to the channel on the selected destination bridge.
+// returns a message id and error.
+func (gw *Gateway) SendMessage(origmsg config.Message, dest *bridge.Bridge, channel config.ChannelInfo, canonicalParentMsgID string) (string, error) {
+	msg := origmsg
+	// Only send the avatar download event to ourselves.
+	if msg.Event == config.EventAvatarDownload {
+		if channel.ID != getChannelID(origmsg) {
+			return "", nil
+		}
+	} else {
+		// do not send to ourself for any other event
+		if channel.ID == getChannelID(origmsg) {
+			return "", nil
+		}
+	}
+
+	// Too noisy to log like other events
+	if msg.Event != config.EventUserTyping {
+		flog.Debugf("=> Sending %#v from %s (%s) to %s (%s)", msg, msg.Account, origmsg.Channel, dest.Account, channel.Name)
+	}
+
+	msg.Channel = channel.Name
+	msg.Avatar = gw.modifyAvatar(origmsg, dest)
+	msg.Username = gw.modifyUsername(origmsg, dest)
+
+	msg.ID = gw.getDestMsgID(origmsg.Protocol+" "+origmsg.ID, dest, channel)
+
+	// for api we need originchannel as channel
+	if dest.Protocol == apiProtocol {
+		msg.Channel = origmsg.Channel
+	}
+
+	msg.ParentID = gw.getDestMsgID(origmsg.Protocol+" "+canonicalParentMsgID, dest, channel)
+	if msg.ParentID == "" {
+		msg.ParentID = canonicalParentMsgID
+	}
+
+	// if we are using mattermost plugin account, send messages to MattermostPlugin channel
+	// that can be picked up by the mattermost matterbridge plugin
+	if dest.Account == "mattermost.plugin" {
+		gw.Router.MattermostPlugin <- msg
+	}
+
+	mID, err := dest.Send(msg)
+	if err != nil {
+		return mID, err
+	}
+
+	// append the message ID (mID) from this bridge (dest) to our brMsgIDs slice
+	if mID != "" {
+		flog.Debugf("mID %s: %s", dest.Account, mID)
+		return mID, nil
+		//brMsgIDs = append(brMsgIDs, &BrMsgID{dest, dest.Protocol + " " + mID, channel.ID})
+	}
+	return "", nil
+}
+
+func (gw *Gateway) validGatewayDest(msg *config.Message) bool {
+	return msg.Gateway == gw.Name
+}
+
+func getChannelID(msg config.Message) string {
+	return msg.Channel + msg.Account
+}
+
+func isAPI(account string) bool {
+	return strings.HasPrefix(account, "api.")
+}

gateway/gateway_test.go

@@ -0,0 +1,501 @@
+package gateway
+
+import (
+	"fmt"
+	"strconv"
+	"testing"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/gateway/bridgemap"
+	"github.com/stretchr/testify/assert"
+)
+
+var testconfig = []byte(`
+[irc.freenode]
+[mattermost.test]
+[gitter.42wim]
+[discord.test]
+[slack.test]
+
+[[gateway]]
+    name = "bridge1"
+    enable=true
+    
+    [[gateway.inout]]
+    account = "irc.freenode"
+    channel = "#wimtesting"
+    
+    [[gateway.inout]]
+    account="gitter.42wim"
+    channel="42wim/testroom"
+    #channel="matterbridge/Lobby"
+
+    [[gateway.inout]]
+    account = "discord.test"
+    channel = "general"
+    
+    [[gateway.inout]]
+    account="slack.test"
+    channel="testing"
+	`)
+
+var testconfig2 = []byte(`
+[irc.freenode]
+[mattermost.test]
+[gitter.42wim]
+[discord.test]
+[slack.test]
+
+[[gateway]]
+    name = "bridge1"
+    enable=true
+    
+    [[gateway.in]]
+    account = "irc.freenode"
+    channel = "#wimtesting"
+    
+    [[gateway.in]]
+    account="gitter.42wim"
+    channel="42wim/testroom"
+
+    [[gateway.inout]]
+    account = "discord.test"
+    channel = "general"
+    
+    [[gateway.out]]
+    account="slack.test"
+    channel="testing"
+[[gateway]]
+    name = "bridge2"
+    enable=true
+    
+    [[gateway.in]]
+    account = "irc.freenode"
+    channel = "#wimtesting2"
+    
+    [[gateway.out]]
+    account="gitter.42wim"
+    channel="42wim/testroom"
+
+    [[gateway.out]]
+    account = "discord.test"
+    channel = "general2"
+	`)
+
+var testconfig3 = []byte(`
+[irc.zzz]
+[telegram.zzz]
+[slack.zzz]
+[[gateway]]
+name="bridge"
+enable=true
+
+    [[gateway.inout]]
+    account="irc.zzz"
+    channel="#main"		
+
+    [[gateway.inout]]
+    account="telegram.zzz"
+    channel="-1111111111111"
+
+    [[gateway.inout]]
+    account="slack.zzz"
+    channel="irc"	
+	
+[[gateway]]
+name="announcements"
+enable=true
+	
+    [[gateway.in]]
+    account="telegram.zzz"
+    channel="-2222222222222"	
+	
+    [[gateway.out]]
+    account="irc.zzz"
+    channel="#main"		
+	
+    [[gateway.out]]
+    account="irc.zzz"
+    channel="#main-help"	
+
+    [[gateway.out]]
+    account="telegram.zzz"
+    channel="--333333333333"	
+
+    [[gateway.out]]
+    account="slack.zzz"
+    channel="general"		
+	
+[[gateway]]
+name="bridge2"
+enable=true
+
+    [[gateway.inout]]
+    account="irc.zzz"
+    channel="#main-help"	
+
+    [[gateway.inout]]
+    account="telegram.zzz"
+    channel="--444444444444"	
+
+	
+[[gateway]]
+name="bridge3"
+enable=true
+
+    [[gateway.inout]]
+    account="irc.zzz"
+    channel="#main-telegram"	
+
+    [[gateway.inout]]
+    account="telegram.zzz"
+    channel="--333333333333"
+`)
+
+const (
+	ircTestAccount   = "irc.zzz"
+	tgTestAccount    = "telegram.zzz"
+	slackTestAccount = "slack.zzz"
+)
+
+func maketestRouter(input []byte) *Router {
+	cfg := config.NewConfigFromString(input)
+	r, err := NewRouter(cfg, bridgemap.FullMap)
+	if err != nil {
+		fmt.Println(err)
+	}
+	return r
+}
+func TestNewRouter(t *testing.T) {
+	r := maketestRouter(testconfig)
+	assert.Equal(t, 1, len(r.Gateways))
+	assert.Equal(t, 4, len(r.Gateways["bridge1"].Bridges))
+	assert.Equal(t, 4, len(r.Gateways["bridge1"].Channels))
+
+	r = maketestRouter(testconfig2)
+	assert.Equal(t, 2, len(r.Gateways))
+	assert.Equal(t, 4, len(r.Gateways["bridge1"].Bridges))
+	assert.Equal(t, 3, len(r.Gateways["bridge2"].Bridges))
+	assert.Equal(t, 4, len(r.Gateways["bridge1"].Channels))
+	assert.Equal(t, 3, len(r.Gateways["bridge2"].Channels))
+	assert.Equal(t, &config.ChannelInfo{
+		Name:        "42wim/testroom",
+		Direction:   "out",
+		ID:          "42wim/testroomgitter.42wim",
+		Account:     "gitter.42wim",
+		SameChannel: map[string]bool{"bridge2": false},
+	}, r.Gateways["bridge2"].Channels["42wim/testroomgitter.42wim"])
+	assert.Equal(t, &config.ChannelInfo{
+		Name:        "42wim/testroom",
+		Direction:   "in",
+		ID:          "42wim/testroomgitter.42wim",
+		Account:     "gitter.42wim",
+		SameChannel: map[string]bool{"bridge1": false},
+	}, r.Gateways["bridge1"].Channels["42wim/testroomgitter.42wim"])
+	assert.Equal(t, &config.ChannelInfo{
+		Name:        "general",
+		Direction:   "inout",
+		ID:          "generaldiscord.test",
+		Account:     "discord.test",
+		SameChannel: map[string]bool{"bridge1": false},
+	}, r.Gateways["bridge1"].Channels["generaldiscord.test"])
+}
+
+func TestGetDestChannel(t *testing.T) {
+	r := maketestRouter(testconfig2)
+	msg := &config.Message{Text: "test", Channel: "general", Account: "discord.test", Gateway: "bridge1", Protocol: "discord", Username: "test"}
+	for _, br := range r.Gateways["bridge1"].Bridges {
+		switch br.Account {
+		case "discord.test":
+			assert.Equal(t, []config.ChannelInfo{{
+				Name:        "general",
+				Account:     "discord.test",
+				Direction:   "inout",
+				ID:          "generaldiscord.test",
+				SameChannel: map[string]bool{"bridge1": false},
+				Options:     config.ChannelOptions{Key: ""},
+			}}, r.Gateways["bridge1"].getDestChannel(msg, *br))
+		case "slack.test":
+			assert.Equal(t, []config.ChannelInfo{{
+				Name:        "testing",
+				Account:     "slack.test",
+				Direction:   "out",
+				ID:          "testingslack.test",
+				SameChannel: map[string]bool{"bridge1": false},
+				Options:     config.ChannelOptions{Key: ""},
+			}}, r.Gateways["bridge1"].getDestChannel(msg, *br))
+		case "gitter.42wim":
+			assert.Equal(t, []config.ChannelInfo(nil), r.Gateways["bridge1"].getDestChannel(msg, *br))
+		case "irc.freenode":
+			assert.Equal(t, []config.ChannelInfo(nil), r.Gateways["bridge1"].getDestChannel(msg, *br))
+		}
+	}
+}
+
+func TestGetDestChannelAdvanced(t *testing.T) {
+	r := maketestRouter(testconfig3)
+	var msgs []*config.Message
+	i := 0
+	for _, gw := range r.Gateways {
+		for _, channel := range gw.Channels {
+			msgs = append(msgs, &config.Message{Text: "text" + strconv.Itoa(i), Channel: channel.Name, Account: channel.Account, Gateway: gw.Name, Username: "user" + strconv.Itoa(i)})
+			i++
+		}
+	}
+	hits := make(map[string]int)
+	for _, gw := range r.Gateways {
+		for _, br := range gw.Bridges {
+			for _, msg := range msgs {
+				channels := gw.getDestChannel(msg, *br)
+				if gw.Name != msg.Gateway {
+					assert.Equal(t, []config.ChannelInfo(nil), channels)
+					continue
+				}
+				switch gw.Name {
+				case "bridge":
+					if (msg.Channel == "#main" || msg.Channel == "-1111111111111" || msg.Channel == "irc") &&
+						(msg.Account == ircTestAccount || msg.Account == tgTestAccount || msg.Account == slackTestAccount) {
+						hits[gw.Name]++
+						switch br.Account {
+						case ircTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "#main",
+								Account:     ircTestAccount,
+								Direction:   "inout",
+								ID:          "#mainirc.zzz",
+								SameChannel: map[string]bool{"bridge": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						case tgTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "-1111111111111",
+								Account:     tgTestAccount,
+								Direction:   "inout",
+								ID:          "-1111111111111telegram.zzz",
+								SameChannel: map[string]bool{"bridge": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						case slackTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "irc",
+								Account:     slackTestAccount,
+								Direction:   "inout",
+								ID:          "ircslack.zzz",
+								SameChannel: map[string]bool{"bridge": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						}
+					}
+				case "bridge2":
+					if (msg.Channel == "#main-help" || msg.Channel == "--444444444444") &&
+						(msg.Account == ircTestAccount || msg.Account == tgTestAccount) {
+						hits[gw.Name]++
+						switch br.Account {
+						case ircTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "#main-help",
+								Account:     ircTestAccount,
+								Direction:   "inout",
+								ID:          "#main-helpirc.zzz",
+								SameChannel: map[string]bool{"bridge2": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						case tgTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "--444444444444",
+								Account:     tgTestAccount,
+								Direction:   "inout",
+								ID:          "--444444444444telegram.zzz",
+								SameChannel: map[string]bool{"bridge2": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						}
+					}
+				case "bridge3":
+					if (msg.Channel == "#main-telegram" || msg.Channel == "--333333333333") &&
+						(msg.Account == ircTestAccount || msg.Account == tgTestAccount) {
+						hits[gw.Name]++
+						switch br.Account {
+						case ircTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "#main-telegram",
+								Account:     ircTestAccount,
+								Direction:   "inout",
+								ID:          "#main-telegramirc.zzz",
+								SameChannel: map[string]bool{"bridge3": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						case tgTestAccount:
+							assert.Equal(t, []config.ChannelInfo{{
+								Name:        "--333333333333",
+								Account:     tgTestAccount,
+								Direction:   "inout",
+								ID:          "--333333333333telegram.zzz",
+								SameChannel: map[string]bool{"bridge3": false},
+								Options:     config.ChannelOptions{Key: ""},
+							}}, channels)
+						}
+					}
+				case "announcements":
+					if msg.Channel != "-2222222222222" && msg.Account != "telegram" {
+						assert.Equal(t, []config.ChannelInfo(nil), channels)
+						continue
+					}
+					hits[gw.Name]++
+					switch br.Account {
+					case ircTestAccount:
+						assert.Len(t, channels, 2)
+						assert.Contains(t, channels, config.ChannelInfo{
+							Name:        "#main",
+							Account:     ircTestAccount,
+							Direction:   "out",
+							ID:          "#mainirc.zzz",
+							SameChannel: map[string]bool{"announcements": false},
+							Options:     config.ChannelOptions{Key: ""},
+						})
+						assert.Contains(t, channels, config.ChannelInfo{
+							Name:        "#main-help",
+							Account:     ircTestAccount,
+							Direction:   "out",
+							ID:          "#main-helpirc.zzz",
+							SameChannel: map[string]bool{"announcements": false},
+							Options:     config.ChannelOptions{Key: ""},
+						})
+					case slackTestAccount:
+						assert.Equal(t, []config.ChannelInfo{{
+							Name:        "general",
+							Account:     slackTestAccount,
+							Direction:   "out",
+							ID:          "generalslack.zzz",
+							SameChannel: map[string]bool{"announcements": false},
+							Options:     config.ChannelOptions{Key: ""},
+						}}, channels)
+					case tgTestAccount:
+						assert.Equal(t, []config.ChannelInfo{{
+							Name:        "--333333333333",
+							Account:     tgTestAccount,
+							Direction:   "out",
+							ID:          "--333333333333telegram.zzz",
+							SameChannel: map[string]bool{"announcements": false},
+							Options:     config.ChannelOptions{Key: ""},
+						}}, channels)
+					}
+				}
+			}
+		}
+	}
+	assert.Equal(t, map[string]int{"bridge3": 4, "bridge": 9, "announcements": 3, "bridge2": 4}, hits)
+}
+
+func TestIgnoreTextEmpty(t *testing.T) {
+	extraFile := make(map[string][]interface{})
+	extraAttach := make(map[string][]interface{})
+	extraFailure := make(map[string][]interface{})
+	extraFile["file"] = append(extraFile["file"], config.FileInfo{})
+	extraAttach["attachments"] = append(extraAttach["attachments"], []string{})
+	extraFailure[config.EventFileFailureSize] = append(extraFailure[config.EventFileFailureSize], config.FileInfo{})
+
+	msgTests := map[string]struct {
+		input  *config.Message
+		output bool
+	}{
+		"usertyping": {
+			input:  &config.Message{Event: config.EventUserTyping},
+			output: false,
+		},
+		"file attach": {
+			input:  &config.Message{Extra: extraFile},
+			output: false,
+		},
+		"attachments": {
+			input:  &config.Message{Extra: extraAttach},
+			output: false,
+		},
+		config.EventFileFailureSize: {
+			input:  &config.Message{Extra: extraFailure},
+			output: false,
+		},
+		"nil extra": {
+			input:  &config.Message{Extra: nil},
+			output: true,
+		},
+		"empty": {
+			input:  &config.Message{},
+			output: true,
+		},
+	}
+	gw := &Gateway{}
+	for testname, testcase := range msgTests {
+		output := gw.ignoreTextEmpty(testcase.input)
+		assert.Equalf(t, testcase.output, output, "case '%s' failed", testname)
+	}
+
+}
+
+func TestIgnoreTexts(t *testing.T) {
+	msgTests := map[string]struct {
+		input  *config.Message
+		re     []string
+		output bool
+	}{
+		"no regex": {
+			input:  &config.Message{Text: "a text message"},
+			re:     []string{},
+			output: false,
+		},
+		"simple regex": {
+			input:  &config.Message{Text: "a text message"},
+			re:     []string{"text"},
+			output: true,
+		},
+		"multiple regex fail": {
+			input:  &config.Message{Text: "a text message"},
+			re:     []string{"abc", "123$"},
+			output: false,
+		},
+		"multiple regex pass": {
+			input:  &config.Message{Text: "a text message"},
+			re:     []string{"lala", "sage$"},
+			output: true,
+		},
+	}
+	gw := &Gateway{}
+	for testname, testcase := range msgTests {
+		output := gw.ignoreTexts(testcase.input, testcase.re)
+		assert.Equalf(t, testcase.output, output, "case '%s' failed", testname)
+	}
+}
+
+func TestIgnoreNicks(t *testing.T) {
+	msgTests := map[string]struct {
+		input  *config.Message
+		re     []string
+		output bool
+	}{
+		"no entry": {
+			input:  &config.Message{Username: "user", Text: "a text message"},
+			re:     []string{},
+			output: false,
+		},
+		"one entry": {
+			input:  &config.Message{Username: "user", Text: "a text message"},
+			re:     []string{"user"},
+			output: true,
+		},
+		"multiple entries": {
+			input:  &config.Message{Username: "user", Text: "a text message"},
+			re:     []string{"abc", "user"},
+			output: true,
+		},
+		"multiple entries fail": {
+			input:  &config.Message{Username: "user", Text: "a text message"},
+			re:     []string{"abc", "def"},
+			output: false,
+		},
+	}
+	gw := &Gateway{}
+	for testname, testcase := range msgTests {
+		output := gw.ignoreNicks(testcase.input, testcase.re)
+		assert.Equalf(t, testcase.output, output, "case '%s' failed", testname)
+	}
+}

gateway/handlers.go

@@ -0,0 +1,227 @@
+package gateway
+
+import (
+	"bytes"
+	"crypto/sha1" //nolint:gosec
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+	"path/filepath"
+	"regexp"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+)
+
+// handleEventFailure handles failures and reconnects bridges.
+func (r *Router) handleEventFailure(msg *config.Message) {
+	if msg.Event != config.EventFailure {
+		return
+	}
+	for _, gw := range r.Gateways {
+		for _, br := range gw.Bridges {
+			if msg.Account == br.Account {
+				go gw.reconnectBridge(br)
+				return
+			}
+		}
+	}
+}
+
+// handleEventGetChannelMembers handles channel members
+func (r *Router) handleEventGetChannelMembers(msg *config.Message) {
+	if msg.Event != config.EventGetChannelMembers {
+		return
+	}
+	for _, gw := range r.Gateways {
+		for _, br := range gw.Bridges {
+			if msg.Account == br.Account {
+				cMembers := msg.Extra[config.EventGetChannelMembers][0].(config.ChannelMembers)
+				flog.Debugf("Syncing channelmembers from %s", msg.Account)
+				br.SetChannelMembers(&cMembers)
+				return
+			}
+		}
+	}
+}
+
+// handleEventRejoinChannels handles rejoining of channels.
+func (r *Router) handleEventRejoinChannels(msg *config.Message) {
+	if msg.Event != config.EventRejoinChannels {
+		return
+	}
+	for _, gw := range r.Gateways {
+		for _, br := range gw.Bridges {
+			if msg.Account == br.Account {
+				br.Joined = make(map[string]bool)
+				if err := br.JoinChannels(); err != nil {
+					flog.Errorf("channel join failed for %s: %s", msg.Account, err)
+				}
+			}
+		}
+	}
+}
+
+// handleFiles uploads or places all files on the given msg to the MediaServer and
+// adds the new URL of the file on the MediaServer onto the given msg.
+func (gw *Gateway) handleFiles(msg *config.Message) {
+	reg := regexp.MustCompile("[^a-zA-Z0-9]+")
+
+	// If we don't have a attachfield or we don't have a mediaserver configured return
+	if msg.Extra == nil ||
+		(gw.BridgeValues().General.MediaServerUpload == "" &&
+			gw.BridgeValues().General.MediaDownloadPath == "") {
+		return
+	}
+
+	// If we don't have files, nothing to upload.
+	if len(msg.Extra["file"]) == 0 {
+		return
+	}
+
+	for i, f := range msg.Extra["file"] {
+		fi := f.(config.FileInfo)
+		ext := filepath.Ext(fi.Name)
+		fi.Name = fi.Name[0 : len(fi.Name)-len(ext)]
+		fi.Name = reg.ReplaceAllString(fi.Name, "_")
+		fi.Name += ext
+
+		sha1sum := fmt.Sprintf("%x", sha1.Sum(*fi.Data))[:8] //nolint:gosec
+
+		if gw.BridgeValues().General.MediaServerUpload != "" {
+			// Use MediaServerUpload. Upload using a PUT HTTP request and basicauth.
+			if err := gw.handleFilesUpload(&fi); err != nil {
+				flog.Error(err)
+				continue
+			}
+		} else {
+			// Use MediaServerPath. Place the file on the current filesystem.
+			if err := gw.handleFilesLocal(&fi); err != nil {
+				flog.Error(err)
+				continue
+			}
+		}
+
+		// Download URL.
+		durl := gw.BridgeValues().General.MediaServerDownload + "/" + sha1sum + "/" + fi.Name
+
+		flog.Debugf("mediaserver download URL = %s", durl)
+
+		// We uploaded/placed the file successfully. Add the SHA and URL.
+		extra := msg.Extra["file"][i].(config.FileInfo)
+		extra.URL = durl
+		extra.SHA = sha1sum
+		msg.Extra["file"][i] = extra
+	}
+}
+
+// handleFilesUpload uses MediaServerUpload configuration to upload the file.
+// Returns error on failure.
+func (gw *Gateway) handleFilesUpload(fi *config.FileInfo) error {
+	client := &http.Client{
+		Timeout: time.Second * 5,
+	}
+	// Use MediaServerUpload. Upload using a PUT HTTP request and basicauth.
+	sha1sum := fmt.Sprintf("%x", sha1.Sum(*fi.Data))[:8] //nolint:gosec
+	url := gw.BridgeValues().General.MediaServerUpload + "/" + sha1sum + "/" + fi.Name
+
+	req, err := http.NewRequest("PUT", url, bytes.NewReader(*fi.Data))
+	if err != nil {
+		return fmt.Errorf("mediaserver upload failed, could not create request: %#v", err)
+	}
+
+	flog.Debugf("mediaserver upload url: %s", url)
+
+	req.Header.Set("Content-Type", "binary/octet-stream")
+	_, err = client.Do(req)
+	if err != nil {
+		return fmt.Errorf("mediaserver upload failed, could not Do request: %#v", err)
+	}
+	return nil
+}
+
+// handleFilesLocal use MediaServerPath configuration, places the file on the current filesystem.
+// Returns error on failure.
+func (gw *Gateway) handleFilesLocal(fi *config.FileInfo) error {
+	sha1sum := fmt.Sprintf("%x", sha1.Sum(*fi.Data))[:8] //nolint:gosec
+	dir := gw.BridgeValues().General.MediaDownloadPath + "/" + sha1sum
+	err := os.Mkdir(dir, os.ModePerm)
+	if err != nil && !os.IsExist(err) {
+		return fmt.Errorf("mediaserver path failed, could not mkdir: %s %#v", err, err)
+	}
+
+	path := dir + "/" + fi.Name
+	flog.Debugf("mediaserver path placing file: %s", path)
+
+	err = ioutil.WriteFile(path, *fi.Data, os.ModePerm)
+	if err != nil {
+		return fmt.Errorf("mediaserver path failed, could not writefile: %s %#v", err, err)
+	}
+	return nil
+}
+
+// ignoreEvent returns true if we need to ignore this event for the specified destination bridge.
+func (gw *Gateway) ignoreEvent(event string, dest *bridge.Bridge) bool {
+	switch event {
+	case config.EventAvatarDownload:
+		// Avatar downloads are only relevant for telegram and mattermost for now
+		if dest.Protocol != "mattermost" && dest.Protocol != "telegram" {
+			return true
+		}
+	case config.EventJoinLeave:
+		// only relay join/part when configured
+		if !dest.GetBool("ShowJoinPart") {
+			return true
+		}
+	case config.EventTopicChange:
+		// only relay topic change when used in some way on other side
+		if dest.GetBool("ShowTopicChange") && dest.GetBool("SyncTopic") {
+			return true
+		}
+	}
+	return false
+}
+
+// handleMessage makes sure the message get sent to the correct bridge/channels.
+// Returns an array of msg ID's
+func (gw *Gateway) handleMessage(msg config.Message, dest *bridge.Bridge) []*BrMsgID {
+	var brMsgIDs []*BrMsgID
+
+	// if we have an attached file, or other info
+	if msg.Extra != nil && len(msg.Extra[config.EventFileFailureSize]) != 0 && msg.Text == "" {
+		return brMsgIDs
+	}
+
+	if gw.ignoreEvent(msg.Event, dest) {
+		return brMsgIDs
+	}
+
+	// broadcast to every out channel (irc QUIT)
+	if msg.Channel == "" && msg.Event != config.EventJoinLeave {
+		flog.Debug("empty channel")
+		return brMsgIDs
+	}
+
+	// Get the ID of the parent message in thread
+	var canonicalParentMsgID string
+	if msg.ParentID != "" && dest.GetBool("PreserveThreading") {
+		canonicalParentMsgID = gw.FindCanonicalMsgID(msg.Protocol, msg.ParentID)
+	}
+
+	origmsg := msg
+	channels := gw.getDestChannel(&msg, *dest)
+	for _, channel := range channels {
+		msgID, err := gw.SendMessage(origmsg, dest, channel, canonicalParentMsgID)
+		if err != nil {
+			flog.Errorf("SendMessage failed: %s", err)
+			continue
+		}
+		if msgID == "" {
+			continue
+		}
+		brMsgIDs = append(brMsgIDs, &BrMsgID{dest, dest.Protocol + " " + msgID, channel.ID})
+	}
+	return brMsgIDs
+}

gateway/router.go

@@ -0,0 +1,157 @@
+package gateway
+
+import (
+	"fmt"
+	"sync"
+	"time"
+
+	"github.com/42wim/matterbridge/bridge"
+	"github.com/42wim/matterbridge/bridge/config"
+	samechannelgateway "github.com/42wim/matterbridge/gateway/samechannel"
+)
+
+type Router struct {
+	config.Config
+
+	BridgeMap        map[string]bridge.Factory
+	Gateways         map[string]*Gateway
+	Message          chan config.Message
+	MattermostPlugin chan config.Message
+	sync.RWMutex
+}
+
+func NewRouter(cfg config.Config, bridgeMap map[string]bridge.Factory) (*Router, error) {
+	r := &Router{
+		Config:           cfg,
+		BridgeMap:        bridgeMap,
+		Message:          make(chan config.Message),
+		MattermostPlugin: make(chan config.Message),
+		Gateways:         make(map[string]*Gateway),
+	}
+	sgw := samechannelgateway.New(cfg)
+	gwconfigs := sgw.GetConfig()
+
+	for _, entry := range append(gwconfigs, cfg.BridgeValues().Gateway...) {
+		if !entry.Enable {
+			continue
+		}
+		if entry.Name == "" {
+			return nil, fmt.Errorf("%s", "Gateway without name found")
+		}
+		if _, ok := r.Gateways[entry.Name]; ok {
+			return nil, fmt.Errorf("Gateway with name %s already exists", entry.Name)
+		}
+		r.Gateways[entry.Name] = New(entry, r)
+	}
+	return r, nil
+}
+
+func (r *Router) Start() error {
+	m := make(map[string]*bridge.Bridge)
+	for _, gw := range r.Gateways {
+		flog.Infof("Parsing gateway %s", gw.Name)
+		for _, br := range gw.Bridges {
+			m[br.Account] = br
+		}
+	}
+	for _, br := range m {
+		flog.Infof("Starting bridge: %s ", br.Account)
+		err := br.Connect()
+		if err != nil {
+			e := fmt.Errorf("Bridge %s failed to start: %v", br.Account, err)
+			if r.disableBridge(br, e) {
+				continue
+			}
+			return e
+		}
+		err = br.JoinChannels()
+		if err != nil {
+			e := fmt.Errorf("Bridge %s failed to join channel: %v", br.Account, err)
+			if r.disableBridge(br, e) {
+				continue
+			}
+			return e
+		}
+	}
+	// remove unused bridges
+	for _, gw := range r.Gateways {
+		for i, br := range gw.Bridges {
+			if br.Bridger == nil {
+				flog.Errorf("removing failed bridge %s", i)
+				delete(gw.Bridges, i)
+			}
+		}
+	}
+	go r.handleReceive()
+	go r.updateChannelMembers()
+	return nil
+}
+
+// disableBridge returns true and empties a bridge if we have IgnoreFailureOnStart configured
+// otherwise returns false
+func (r *Router) disableBridge(br *bridge.Bridge, err error) bool {
+	if r.BridgeValues().General.IgnoreFailureOnStart {
+		flog.Error(err)
+		// setting this bridge empty
+		*br = bridge.Bridge{}
+		return true
+	}
+	return false
+}
+
+func (r *Router) getBridge(account string) *bridge.Bridge {
+	for _, gw := range r.Gateways {
+		if br, ok := gw.Bridges[account]; ok {
+			return br
+		}
+	}
+	return nil
+}
+
+func (r *Router) handleReceive() {
+	for msg := range r.Message {
+		msg := msg // scopelint
+		r.handleEventGetChannelMembers(&msg)
+		r.handleEventFailure(&msg)
+		r.handleEventRejoinChannels(&msg)
+		for _, gw := range r.Gateways {
+			// record all the message ID's of the different bridges
+			var msgIDs []*BrMsgID
+			if gw.ignoreMessage(&msg) {
+				continue
+			}
+			msg.Timestamp = time.Now()
+			gw.modifyMessage(&msg)
+			gw.handleFiles(&msg)
+			for _, br := range gw.Bridges {
+				msgIDs = append(msgIDs, gw.handleMessage(msg, br)...)
+			}
+			// only add the message ID if it doesn't already exists
+			if _, ok := gw.Messages.Get(msg.Protocol + " " + msg.ID); !ok && msg.ID != "" {
+				gw.Messages.Add(msg.Protocol+" "+msg.ID, msgIDs)
+			}
+		}
+	}
+}
+
+// updateChannelMembers sends every minute an GetChannelMembers event to all bridges.
+func (r *Router) updateChannelMembers() {
+	// TODO sleep a minute because slack can take a while
+	// fix this by having actually connectionDone events send to the router
+	time.Sleep(time.Minute)
+	for {
+		for _, gw := range r.Gateways {
+			for _, br := range gw.Bridges {
+				// only for slack now
+				if br.Protocol != "slack" {
+					continue
+				}
+				flog.Debugf("sending %s to %s", config.EventGetChannelMembers, br.Account)
+				if _, err := br.Send(config.Message{Event: config.EventGetChannelMembers}); err != nil {
+					flog.Errorf("updateChannelMembers: %s", err)
+				}
+			}
+		}
+		time.Sleep(time.Minute)
+	}
+}

gateway/samechannel/samechannel.go

@@ -0,0 +1,28 @@
+package samechannelgateway
+
+import (
+	"github.com/42wim/matterbridge/bridge/config"
+)
+
+type SameChannelGateway struct {
+	config.Config
+}
+
+func New(cfg config.Config) *SameChannelGateway {
+	return &SameChannelGateway{Config: cfg}
+}
+
+func (sgw *SameChannelGateway) GetConfig() []config.Gateway {
+	var gwconfigs []config.Gateway
+	cfg := sgw.Config
+	for _, gw := range cfg.BridgeValues().SameChannelGateway {
+		gwconfig := config.Gateway{Name: gw.Name, Enable: gw.Enable}
+		for _, account := range gw.Accounts {
+			for _, channel := range gw.Channels {
+				gwconfig.InOut = append(gwconfig.InOut, config.Bridge{Account: account, Channel: channel, SameChannel: true})
+			}
+		}
+		gwconfigs = append(gwconfigs, gwconfig)
+	}
+	return gwconfigs
+}

gateway/samechannel/samechannel_test.go

@@ -0,0 +1,73 @@
+package samechannelgateway
+
+import (
+	"testing"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/stretchr/testify/assert"
+)
+
+const testConfig = `
+[mattermost.test]
+[slack.test]
+
+[[samechannelgateway]]
+   enable = true
+   name = "blah"
+      accounts = [ "mattermost.test","slack.test" ]
+      channels = [ "testing","testing2","testing10"]
+`
+
+var (
+	expectedConfig = config.Gateway{
+		Name:   "blah",
+		Enable: true,
+		In:     []config.Bridge(nil),
+		Out:    []config.Bridge(nil),
+		InOut: []config.Bridge{
+			{
+				Account:     "mattermost.test",
+				Channel:     "testing",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+			{
+				Account:     "mattermost.test",
+				Channel:     "testing2",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+			{
+				Account:     "mattermost.test",
+				Channel:     "testing10",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+			{
+				Account:     "slack.test",
+				Channel:     "testing",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+			{
+				Account:     "slack.test",
+				Channel:     "testing2",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+			{
+				Account:     "slack.test",
+				Channel:     "testing10",
+				Options:     config.ChannelOptions{Key: ""},
+				SameChannel: true,
+			},
+		},
+	}
+)
+
+func TestGetConfig(t *testing.T) {
+	cfg := config.NewConfigFromString([]byte(testConfig))
+	sgw := New(cfg)
+	configs := sgw.GetConfig()
+	assert.Equal(t, []config.Gateway{expectedConfig}, configs)
+}

go.mod

@@ -0,0 +1,81 @@
+module github.com/42wim/matterbridge
+
+require (
+	github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557
+	github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14 // indirect
+	github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329
+	github.com/bwmarrin/discordgo v0.19.0
+	github.com/dfordsoft/golib v0.0.0-20180902042739-76ee6ab99bec
+	github.com/dgrijalva/jwt-go v0.0.0-20170508165458-6c8dedd55f8a // indirect
+	github.com/fsnotify/fsnotify v1.4.7
+	github.com/go-telegram-bot-api/telegram-bot-api v4.6.5-0.20181225215658-ec221ba9ea45+incompatible
+	github.com/golang/protobuf v0.0.0-20170613224224-e325f446bebc // indirect
+	github.com/google/gops v0.3.5
+	github.com/gopherjs/gopherjs v0.0.0-20180628210949-0892b62f0d9f // indirect
+	github.com/gorilla/schema v1.0.2
+	github.com/gorilla/websocket v1.4.0
+	github.com/hashicorp/golang-lru v0.5.0
+	github.com/hpcloud/tail v1.0.0 // indirect
+	github.com/jpillora/backoff v0.0.0-20180909062703-3050d21c67d7
+	github.com/jtolds/gls v4.2.1+incompatible // indirect
+	github.com/kardianos/osext v0.0.0-20170207191655-9b883c5eb462 // indirect
+	github.com/kr/pretty v0.1.0 // indirect
+	github.com/labstack/echo v3.3.5+incompatible
+	github.com/labstack/gommon v0.2.1 // indirect
+	github.com/lrstanley/girc v0.0.0-20190102153329-c1e59a02f488
+	github.com/lusis/go-slackbot v0.0.0-20180109053408-401027ccfef5 // indirect
+	github.com/lusis/slack-test v0.0.0-20180109053238-3c758769bfa6 // indirect
+	github.com/matterbridge/go-xmpp v0.0.0-20180529212104-cd19799fba91
+	github.com/matterbridge/gomatrix v0.0.0-20190102230110-6f9631ca6dea
+	github.com/matterbridge/gozulipbot v0.0.0-20180507190239-b6bb12d33544
+	github.com/matterbridge/logrus-prefixed-formatter v0.0.0-20180806162718-01618749af61
+	github.com/mattermost/mattermost-server v5.5.0+incompatible
+	github.com/mattn/go-colorable v0.0.0-20170210172801-5411d3eea597 // indirect
+	github.com/mattn/go-isatty v0.0.0-20170216235908-dda3de49cbfc // indirect
+	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
+	github.com/mitchellh/mapstructure v1.1.2 // indirect
+	github.com/mreiferson/go-httpclient v0.0.0-20160630210159-31f0106b4474 // indirect
+	github.com/mrexodia/wray v0.0.0-20160318003008-78a2c1f284ff // indirect
+	github.com/nicksnyder/go-i18n v1.4.0 // indirect
+	github.com/nlopes/slack v0.4.1-0.20181111125009-5963eafd777b
+	github.com/onsi/ginkgo v1.6.0 // indirect
+	github.com/onsi/gomega v1.4.1 // indirect
+	github.com/paulrosania/go-charset v0.0.0-20151028000031-621bb39fcc83
+	github.com/pborman/uuid v0.0.0-20160216163710-c55201b03606 // indirect
+	github.com/peterhellberg/emojilib v0.0.0-20180820090156-eeb3823dab9a
+	github.com/pkg/errors v0.8.0 // indirect
+	github.com/rs/xid v1.2.1
+	github.com/russross/blackfriday v2.0.0+incompatible
+	github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca
+	github.com/shazow/ssh-chat v0.0.0-20181028152505-f36d7eb9ccc6
+	github.com/shurcooL/sanitized_anchor_name v0.0.0-20170918181015-86672fcb3f95 // indirect
+	github.com/sirupsen/logrus v1.2.0
+	github.com/smartystreets/assertions v0.0.0-20180803164922-886ec427f6b9 // indirect
+	github.com/smartystreets/goconvey v0.0.0-20180222194500-ef6db91d284a // indirect
+	github.com/spf13/cast v1.3.0 // indirect
+	github.com/spf13/pflag v1.0.3 // indirect
+	github.com/spf13/viper v1.2.1
+	github.com/stretchr/testify v1.2.2
+	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
+	github.com/valyala/bytebufferpool v0.0.0-20160817181652-e746df99fe4a // indirect
+	github.com/valyala/fasttemplate v0.0.0-20170224212429-dcecefd839c4 // indirect
+	github.com/x-cray/logrus-prefixed-formatter v0.5.2 // indirect
+	github.com/zfjagann/golang-ring v0.0.0-20141111230621-17637388c9f6
+	gitlab.com/golang-commonmark/html v0.0.0-20180917080848-cfaf75183c4a // indirect
+	gitlab.com/golang-commonmark/linkify v0.0.0-20180917065525-c22b7bdb1179 // indirect
+	gitlab.com/golang-commonmark/markdown v0.0.0-20181102083822-772775880e1f
+	gitlab.com/golang-commonmark/mdurl v0.0.0-20180912090424-e5bce34c34f2 // indirect
+	gitlab.com/golang-commonmark/puny v0.0.0-20180912090636-2cd490539afe // indirect
+	gitlab.com/opennota/wd v0.0.0-20180912061657-c5d65f63c638 // indirect
+	go.uber.org/atomic v1.3.2 // indirect
+	go.uber.org/multierr v1.1.0 // indirect
+	go.uber.org/zap v1.9.1 // indirect
+	golang.org/x/crypto v0.0.0-20181112202954-3d3f9f413869 // indirect
+	golang.org/x/net v0.0.0-20180108090419-434ec0c7fe37 // indirect
+	golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f // indirect
+	golang.org/x/sys v0.0.0-20181116161606-93218def8b18 // indirect
+	gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127 // indirect
+	gopkg.in/fsnotify.v1 v1.4.7 // indirect
+	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
+	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
+)

go.sum

@@ -0,0 +1,197 @@
+github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557 h1:IZtuWGfzQnKnCSu+vl8WGLhpVQ5Uvy3rlSwqXSg+sQg=
+github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557/go.mod h1:jL0YSXMs/txjtGJ4PWrmETOk6KUHMDPMshgQZlTeB3Y=
+github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14 h1:v/zr4ns/4sSahF9KBm4Uc933bLsEEv7LuT63CJ019yo=
+github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329 h1:xZBoq249G9MSt+XuY7sVQzcfONJ6IQuwpCK+KAaOpnY=
+github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329/go.mod h1:HuVM+sZFzumUdKPWiz+IlCMb4RdsKdT3T+nQBKL+sYg=
+github.com/alexcesaro/log v0.0.0-20150915221235-61e686294e58 h1:MkpmYfld/S8kXqTYI68DfL8/hHXjHogL120Dy00TIxc=
+github.com/alexcesaro/log v0.0.0-20150915221235-61e686294e58/go.mod h1:YNfsMyWSs+h+PaYkxGeMVmVCX75Zj/pqdjbu12ciCYE=
+github.com/bwmarrin/discordgo v0.19.0 h1:kMED/DB0NR1QhRcalb85w0Cu3Ep2OrGAqZH1R5awQiY=
+github.com/bwmarrin/discordgo v0.19.0/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVOwN61zSZ0r4Q=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/dfordsoft/golib v0.0.0-20180902042739-76ee6ab99bec h1:JEUiu7P9smN7zgX87a2zVnnbPPickIM9Gf9OIhsIgWQ=
+github.com/dfordsoft/golib v0.0.0-20180902042739-76ee6ab99bec/go.mod h1:UGa5M2Sz/Uh13AMse4+RELKCDw7kqgqlTjeGae+7vUY=
+github.com/dgrijalva/jwt-go v0.0.0-20170508165458-6c8dedd55f8a h1:MuHMeSsXbNEeUyxjB7T9P8s1+5k8OLTC/M27qsVwixM=
+github.com/dgrijalva/jwt-go v0.0.0-20170508165458-6c8dedd55f8a/go.mod h1:E3ru+11k8xSBh+hMPgOLZmtrrCbhqsmaPHjLKYnJCaQ=
+github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
+github.com/fsnotify/fsnotify v1.4.7/go.mod h1:jwhsz4b93w/PPRr/qN1Yymfu8t87LnFCMoQvtojpjFo=
+github.com/go-telegram-bot-api/telegram-bot-api v4.6.5-0.20181225215658-ec221ba9ea45+incompatible h1:i64CCJcSqkRIkm5OSdZQjZq84/gJsk2zNwHWIRYWlKE=
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hook/rockethook/rockethook.go

@@ -0,0 +1,107 @@
+package rockethook
+
+import (
+	"crypto/tls"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"net"
+	"net/http"
+)
+
+// Message for rocketchat outgoing webhook.
+type Message struct {
+	Token       string `json:"token"`
+	ChannelID   string `json:"channel_id"`
+	ChannelName string `json:"channel_name"`
+	Timestamp   string `json:"timestamp"`
+	UserID      string `json:"user_id"`
+	UserName    string `json:"user_name"`
+	Text        string `json:"text"`
+}
+
+// Client for Rocketchat.
+type Client struct {
+	In         chan Message
+	httpclient *http.Client
+	Config
+}
+
+// Config for client.
+type Config struct {
+	BindAddress        string // Address to listen on
+	Token              string // Only allow this token from Rocketchat. (Allow everything when empty)
+	InsecureSkipVerify bool   // disable certificate checking
+}
+
+// New Rocketchat client.
+func New(url string, config Config) *Client {
+	c := &Client{In: make(chan Message), Config: config}
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: config.InsecureSkipVerify}, //nolint:gosec
+	}
+	c.httpclient = &http.Client{Transport: tr}
+	_, _, err := net.SplitHostPort(c.BindAddress)
+	if err != nil {
+		log.Fatalf("incorrect bindaddress %s", c.BindAddress)
+	}
+	go c.StartServer()
+	return c
+}
+
+// StartServer starts a webserver listening for incoming mattermost POSTS.
+func (c *Client) StartServer() {
+	mux := http.NewServeMux()
+	mux.Handle("/", c)
+	log.Printf("Listening on http://%v...\n", c.BindAddress)
+	if err := http.ListenAndServe(c.BindAddress, mux); err != nil {
+		log.Fatal(err)
+	}
+}
+
+// ServeHTTP implementation.
+func (c *Client) ServeHTTP(w http.ResponseWriter, r *http.Request) {
+	if r.Method != "POST" {
+		log.Println("invalid " + r.Method + " connection from " + r.RemoteAddr)
+		http.NotFound(w, r)
+		return
+	}
+	msg := Message{}
+	body, err := ioutil.ReadAll(r.Body)
+	log.Println(string(body))
+	if err != nil {
+		log.Println(err)
+		http.NotFound(w, r)
+		return
+	}
+	defer r.Body.Close()
+	err = json.Unmarshal(body, &msg)
+	if err != nil {
+		log.Println(err)
+		http.NotFound(w, r)
+		return
+	}
+	if msg.Token == "" {
+		log.Println("no token from " + r.RemoteAddr)
+		http.NotFound(w, r)
+		return
+	}
+	msg.ChannelName = "#" + msg.ChannelName
+	if c.Token != "" {
+		if msg.Token != c.Token {
+			log.Println("invalid token " + msg.Token + " from " + r.RemoteAddr)
+			http.NotFound(w, r)
+			return
+		}
+	}
+	c.In <- msg
+}
+
+// Receive returns an incoming message from mattermost outgoing webhooks URL.
+func (c *Client) Receive() Message {
+	var msg Message
+	for msg = range c.In {
+		return msg
+	}
+	return msg
+}

matterbridge.conf.sample

@@ -1,287 +0,0 @@
-#This is configuration for matterbridge.
-###################################################################
-#IRC section
-###################################################################
-[IRC]
-#Enable enables this bridge
-#OPTIONAL (default false)
-Enable=true
-#irc server to connect to. 
-#REQUIRED
-Server="irc.freenode.net:6667"
-
-#Enable to use TLS connection to your irc server. 
-#OPTIONAL (default false)
-UseTLS=false
-
-#Enable SASL (PLAIN) authentication. (freenode requires this from eg AWS hosts)
-#It uses NickServNick and NickServPassword as login and password
-#OPTIONAL (default false)
-UseSASL=false
-
-#Enable to not verify the certificate on your irc server. i
-#e.g. when using selfsigned certificates
-#OPTIONAL (default false)
-SkipTLSVerify=true
-
-#Your nick on irc. 
-#REQUIRED
-Nick="matterbot"
-
-#If you registered your bot with a service like Nickserv on freenode. 
-#Also being used when UseSASL=true
-#OPTIONAL
-NickServNick="nickserv"
-NickServPassword="secret"
-
-#RemoteNickFormat defines how remote users appear on this bridge 
-#The string "{NICK}" (case sensitive) will be replaced by the actual nick / username.
-#The string "{BRIDGE}" (case sensitive) will be replaced by the sending bridge
-#OPTIONAL (default {BRIDGE}-{NICK})
-RemoteNickFormat="[{BRIDGE}] <{NICK}> 
-
-#Nicks you want to ignore. 
-#Messages from those users will not be sent to other bridges.
-#OPTIONAL
-IgnoreNicks="ircspammer1 ircspammer2"
-
-###################################################################
-#XMPP section
-###################################################################
-[XMPP]
-#Enable enables this bridge
-#OPTIONAL (default false)
-Enable=true
-
-#xmpp server to connect to. 
-#REQUIRED
-Server="jabber.example.com:5222"
-
-#Jid
-#REQUIRED
-Jid="user@example.com"
-
-#Password
-#REQUIRED
-Password="yourpass"
-
-#MUC
-#REQUIRED
-Muc="conference.jabber.example.com"
-
-#Your nick in the rooms
-#REQUIRED
-Nick="xmppbot"
-
-
-###################################################################
-#mattermost section
-###################################################################
-
-[mattermost]
-#Enable enables this bridge
-#OPTIONAL (default false)
-Enable=true
-
-#### Settings for webhook matterbridge.
-#### These settings will not be used when using -plus switch which doesn't use 
-#### webhooks.
-
-#Url is your incoming webhook url as specified in mattermost. 
-#See account settings - integrations - incoming webhooks on mattermost.
-#REQUIRED
-URL="https://yourdomain/hooks/yourhookkey"
-
-#Address to listen on for outgoing webhook requests from mattermost.
-#See account settings - integrations - outgoing webhooks on mattermost.
-#This setting will not be used when using -plus switch which doesn't use 
-#webhooks
-#REQUIRED
-BindAddress="0.0.0.0:9999"
-
-#Icon that will be showed in mattermost. 
-#OPTIONAL
-IconURL="http://youricon.png"
-
-#### Settings for matterbridge -plus
-#### Thse settings will only be used when using the -plus switch.
-
-#The mattermost hostname. 
-#REQUIRED
-Server="yourmattermostserver.domain"
-
-#Your team on mattermost. 
-#REQUIRED
-Team="yourteam"
-
-#login/pass of your bot. 
-#Use a dedicated user for this and not your own! 
-#REQUIRED
-Login="yourlogin"
-Password="yourpass"
-
-#Enable this to make a http connection (instead of https) to your mattermost. 
-#OPTIONAL (default false)
-NoTLS=false
-
-#### Shared settings for matterbridge and -plus
-
-#Enable to not verify the certificate on your mattermost server. 
-#e.g. when using selfsigned certificates
-#OPTIONAL (default false)
-SkipTLSVerify=true
-
-#Enable to show IRC joins/parts in mattermost. 
-#OPTIONAL (default false)
-ShowJoinPart=false
-
-#Whether to prefix messages from other bridges to mattermost with the sender's nick. 
-#Useful if username overrides for incoming webhooks isn't enabled on the 
-#mattermost server. If you set PrefixMessagesWithNick to true, each message 
-#from bridge to Mattermost will by default be prefixed by "bridge-" + nick. You can, 
-#however, modify how the messages appear, by setting (and modifying) RemoteNickFormat 
-#OPTIONAL (default false)
-PrefixMessagesWithNick=false
-
-#RemoteNickFormat defines how remote users appear on this bridge 
-#The string "{NICK}" (case sensitive) will be replaced by the actual nick / username.
-#The string "{BRIDGE}" (case sensitive) will be replaced by the sending bridge
-#OPTIONAL (default {BRIDGE}-{NICK})
-RemoteNickFormat="[{BRIDGE}] <{NICK}> 
-
-#how to format the list of IRC nicks when displayed in mattermost. 
-#Possible options are "table" and "plain"
-#OPTIONAL (default plain)
-NickFormatter=plain
-#How many nicks to list per row for formatters that support this. 
-#OPTIONAL (default 4)
-NicksPerRow=4
-
-#Nicks you want to ignore. Messages from those users will not be bridged.
-#OPTIONAL 
-IgnoreNicks="mmbot spammer2"
-
-###################################################################
-#Gitter section
-#Best to make a dedicated gitter account for the bot.
-###################################################################
-[Gitter]
-#Enable enables this bridge
-#OPTIONAL (default false)
-Enable=true
-
-#Token to connect with Gitter API
-#You can get your token by going to https://developer.gitter.im/docs/welcome and SIGN IN
-#REQUIRED
-Token="Yourtokenhere"
-
-#Nicks you want to ignore. Messages of those users will not be bridged.
-#OPTIONAL 
-IgnoreNicks="spammer1 spammer2"
-
-#RemoteNickFormat defines how remote users appear on this bridge 
-#The string "{NICK}" (case sensitive) will be replaced by the actual nick / username.
-#The string "{BRIDGE}" (case sensitive) will be replaced by the sending bridge
-#OPTIONAL (default {BRIDGE}-{NICK})
-RemoteNickFormat="[{BRIDGE}] <{NICK}> 
-
-###################################################################
-#slack section
-###################################################################
-
-[slack]
-#Enable enables this bridge
-#OPTIONAL (default false)
-Enable=true
-
-#### Settings for webhook matterbridge.
-#### These settings will not be used when useAPI is enabled
-
-#Url is your incoming webhook url as specified in slack
-#See account settings - integrations - incoming webhooks on slack
-#REQUIRED (unless useAPI=true)
-URL="https://hooks.slack.com/services/yourhook"
-
-#Address to listen on for outgoing webhook requests from slack
-#See account settings - integrations - outgoing webhooks on slack
-#This setting will not be used when useAPI is eanbled
-#webhooks
-#REQUIRED (unless useAPI=true)
-BindAddress="0.0.0.0:9999"
-
-#Icon that will be showed in slack
-#OPTIONAL
-IconURL="http://youricon.png"
-
-#### Settings for using slack API
-#OPTIONAL
-useAPI=false
-
-#Token to connect with the Slack API
-#REQUIRED (when useAPI=true)
-Token="yourslacktoken"
-
-#### Shared settings for webhooks and API
-
-#Whether to prefix messages from other bridges to mattermost with the sender's nick. 
-#Useful if username overrides for incoming webhooks isn't enabled on the 
-#slack server. If you set PrefixMessagesWithNick to true, each message 
-#from bridge to Slack will by default be prefixed by "bridge-" + nick. You can, 
-#however, modify how the messages appear, by setting (and modifying) RemoteNickFormat 
-#OPTIONAL (default false)
-PrefixMessagesWithNick=false
-
-#RemoteNickFormat defines how remote users appear on this bridge 
-#The string "{NICK}" (case sensitive) will be replaced by the actual nick / username.
-#The string "{BRIDGE}" (case sensitive) will be replaced by the sending bridge
-#OPTIONAL (default {BRIDGE}-{NICK})
-RemoteNickFormat="[{BRIDGE}] <{NICK}> 
-
-#how to format the list of IRC nicks when displayed in slack
-#Possible options are "table" and "plain"
-#OPTIONAL (default plain)
-NickFormatter=plain
-#How many nicks to list per row for formatters that support this. 
-#OPTIONAL (default 4)
-NicksPerRow=4
-
-#Nicks you want to ignore. Messages from those users will not be bridged.
-#OPTIONAL 
-IgnoreNicks="mmbot spammer2"
-
-###################################################################
-#multiple channel config
-###################################################################
-#You can specify multiple channels. 
-#The name is just an identifier for you.
-#REQUIRED (at least 1 channel)
-[Channel "channel1"] 
-#Choose the IRC channel to send messages to.
-IRC="#off-topic"
-#Choose the mattermost channel to messages to.
-mattermost="off-topic"
-#Choose the xmpp channel to send messages to.
-xmpp="off-topic"
-#Choose the Gitter channel to send messages to.
-#Gitter channels are named "user/repo"
-gitter="42wim/matterbridge"
-#Choose the slack channel to send messages to.
-slack="general"
-
-[Channel "testchannel"]
-IRC="#testing"
-mattermost="testing"
-xmpp="testing"
-gitter="user/repo"
-slack="testing"
-
-###################################################################
-#general
-###################################################################
-[general]
-#request your API key on https://github.com/giphy/GiphyAPI. This is a public beta key. 
-#OPTIONAL
-GiphyApiKey="dc6zaTOxFJmzC"
-
-#Enabling plus means you'll use the API version instead of the webhooks one
-Plus=false

matterbridge.go

@@ -3,39 +3,60 @@ package main
 import (
 	"flag"
 	"fmt"
-	"github.com/42wim/matterbridge/bridge"
+	"os"
+	"strings"
+
 	"github.com/42wim/matterbridge/bridge/config"
-	log "github.com/Sirupsen/logrus"
+	"github.com/42wim/matterbridge/gateway"
+	"github.com/42wim/matterbridge/gateway/bridgemap"
+	"github.com/google/gops/agent"
+	prefixed "github.com/matterbridge/logrus-prefixed-formatter"
+	"github.com/sirupsen/logrus"
 )
 
-var version = "0.6.1"
-
-func init() {
-	log.SetFormatter(&log.TextFormatter{FullTimestamp: true})
-}
+var (
+	version = "1.13.0"
+	githash string
+)
 
 func main() {
-	flagConfig := flag.String("conf", "matterbridge.conf", "config file")
+	logrus.SetFormatter(&prefixed.TextFormatter{PrefixPadding: 13, DisableColors: true, FullTimestamp: true})
+	flog := logrus.WithFields(logrus.Fields{"prefix": "main"})
+	flagConfig := flag.String("conf", "matterbridge.toml", "config file")
 	flagDebug := flag.Bool("debug", false, "enable debug")
 	flagVersion := flag.Bool("version", false, "show version")
-	flagPlus := flag.Bool("plus", false, "running using API instead of webhooks (deprecated, set Plus flag in [general] config)")
+	flagGops := flag.Bool("gops", false, "enable gops agent")
 	flag.Parse()
+	if *flagGops {
+		if err := agent.Listen(agent.Options{}); err != nil {
+			flog.Errorf("failed to start gops agent: %#v", err)
+		} else {
+			defer agent.Close()
+		}
+	}
 	if *flagVersion {
-		fmt.Println("version:", version)
+		fmt.Printf("version: %s %s\n", version, githash)
 		return
 	}
-	flag.Parse()
-	if *flagDebug {
-		log.Info("enabling debug")
-		log.SetLevel(log.DebugLevel)
+	if *flagDebug || os.Getenv("DEBUG") == "1" {
+		logrus.SetFormatter(&prefixed.TextFormatter{PrefixPadding: 13, DisableColors: true, FullTimestamp: false, ForceFormatting: true})
+		flog.Info("Enabling debug")
+		logrus.SetLevel(logrus.DebugLevel)
+	}
+	flog.Printf("Running version %s %s", version, githash)
+	if strings.Contains(version, "-dev") {
+		flog.Println("WARNING: THIS IS A DEVELOPMENT VERSION. Things may break.")
 	}
-	fmt.Println("running version", version)
 	cfg := config.NewConfig(*flagConfig)
-	if *flagPlus {
-		cfg.General.Plus = true
-	}
-	err := bridge.NewBridge(cfg)
+	cfg.BridgeValues().General.Debug = *flagDebug
+	r, err := gateway.NewRouter(cfg, bridgemap.FullMap)
 	if err != nil {
-		log.Debugf("starting bridge failed %#v", err)
+		flog.Fatalf("Starting gateway failed: %s", err)
 	}
+	err = r.Start()
+	if err != nil {
+		flog.Fatalf("Starting gateway failed: %s", err)
+	}
+	flog.Printf("Gateway(s) started succesfully. Now relaying messages")
+	select {}
 }

matterbridge.toml.simple

@@ -0,0 +1,34 @@
+#WARNING: as this file contains credentials, be sure to set correct file permissions
+[irc]
+    [irc.freenode]
+    Server="irc.freenode.net:6667"
+    Nick="matterbot"
+
+[mattermost]
+    [mattermost.work]
+    #do not prefix it wit http:// or https://
+    Server="yourmattermostserver.domain" 
+    Team="yourteam"
+    Login="yourlogin"
+    Password="yourpass"
+    PrefixMessagesWithNick=true
+
+[[gateway]]
+name="gateway1"
+enable=true
+    [[gateway.inout]]
+    account="irc.freenode"
+    channel="#testing"
+
+    [[gateway.inout]]
+    account="mattermost.work"
+    channel="off-topic"
+    
+#simpler config possible since v0.10.2
+#[[gateway]]
+#name="gateway2"
+#enable=true
+#inout = [
+#    { account="irc.freenode", channel="#testing", options={key="channelkey"}},
+#    { account="mattermost.work", channel="off-topic" },
+#]

matterclient/channels.go

@@ -0,0 +1,208 @@
+package matterclient
+
+import (
+	"errors"
+	"strings"
+
+	"github.com/mattermost/mattermost-server/model"
+	"github.com/sirupsen/logrus"
+)
+
+// GetChannels returns all channels we're members off
+func (m *MMClient) GetChannels() []*model.Channel {
+	m.RLock()
+	defer m.RUnlock()
+	var channels []*model.Channel
+	// our primary team channels first
+	channels = append(channels, m.Team.Channels...)
+	for _, t := range m.OtherTeams {
+		if t.Id != m.Team.Id {
+			channels = append(channels, t.Channels...)
+		}
+	}
+	return channels
+}
+
+func (m *MMClient) GetChannelHeader(channelId string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	for _, t := range m.OtherTeams {
+		for _, channel := range append(t.Channels, t.MoreChannels...) {
+			if channel.Id == channelId {
+				return channel.Header
+			}
+
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) GetChannelId(name string, teamId string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	if teamId != "" {
+		return m.getChannelIdTeam(name, teamId)
+	}
+
+	for _, t := range m.OtherTeams {
+		for _, channel := range append(t.Channels, t.MoreChannels...) {
+			if channel.Type == model.CHANNEL_GROUP {
+				res := strings.Replace(channel.DisplayName, ", ", "-", -1)
+				res = strings.Replace(res, " ", "_", -1)
+				if res == name {
+					return channel.Id
+				}
+			}
+
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) getChannelIdTeam(name string, teamId string) string { //nolint:golint
+	for _, t := range m.OtherTeams {
+		if t.Id == teamId {
+			for _, channel := range append(t.Channels, t.MoreChannels...) {
+				if channel.Name == name {
+					return channel.Id
+				}
+			}
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) GetChannelName(channelId string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	for _, t := range m.OtherTeams {
+		if t == nil {
+			continue
+		}
+		for _, channel := range append(t.Channels, t.MoreChannels...) {
+			if channel.Id == channelId {
+				if channel.Type == model.CHANNEL_GROUP {
+					res := strings.Replace(channel.DisplayName, ", ", "-", -1)
+					res = strings.Replace(res, " ", "_", -1)
+					return res
+				}
+				return channel.Name
+			}
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) GetChannelTeamId(id string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	for _, t := range append(m.OtherTeams, m.Team) {
+		for _, channel := range append(t.Channels, t.MoreChannels...) {
+			if channel.Id == id {
+				return channel.TeamId
+			}
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) GetLastViewedAt(channelId string) int64 { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	res, resp := m.Client.GetChannelMember(channelId, m.User.Id, "")
+	if resp.Error != nil {
+		return model.GetMillis()
+	}
+	return res.LastViewedAt
+}
+
+// GetMoreChannels returns existing channels where we're not a member off.
+func (m *MMClient) GetMoreChannels() []*model.Channel {
+	m.RLock()
+	defer m.RUnlock()
+	var channels []*model.Channel
+	for _, t := range m.OtherTeams {
+		channels = append(channels, t.MoreChannels...)
+	}
+	return channels
+}
+
+// GetTeamFromChannel returns teamId belonging to channel (DM channels have no teamId).
+func (m *MMClient) GetTeamFromChannel(channelId string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	var channels []*model.Channel
+	for _, t := range m.OtherTeams {
+		channels = append(channels, t.Channels...)
+		if t.MoreChannels != nil {
+			channels = append(channels, t.MoreChannels...)
+		}
+		for _, c := range channels {
+			if c.Id == channelId {
+				if c.Type == model.CHANNEL_GROUP {
+					return "G"
+				}
+				return t.Id
+			}
+		}
+		channels = nil
+	}
+	return ""
+}
+
+func (m *MMClient) JoinChannel(channelId string) error { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	for _, c := range m.Team.Channels {
+		if c.Id == channelId {
+			m.log.Debug("Not joining ", channelId, " already joined.")
+			return nil
+		}
+	}
+	m.log.Debug("Joining ", channelId)
+	_, resp := m.Client.AddChannelMember(channelId, m.User.Id)
+	if resp.Error != nil {
+		return resp.Error
+	}
+	return nil
+}
+
+func (m *MMClient) UpdateChannels() error {
+	mmchannels, resp := m.Client.GetChannelsForTeamForUser(m.Team.Id, m.User.Id, "")
+	if resp.Error != nil {
+		return errors.New(resp.Error.DetailedError)
+	}
+	m.Lock()
+	m.Team.Channels = mmchannels
+	m.Unlock()
+
+	mmchannels, resp = m.Client.GetPublicChannelsForTeam(m.Team.Id, 0, 5000, "")
+	if resp.Error != nil {
+		return errors.New(resp.Error.DetailedError)
+	}
+
+	m.Lock()
+	m.Team.MoreChannels = mmchannels
+	m.Unlock()
+	return nil
+}
+
+func (m *MMClient) UpdateChannelHeader(channelId string, header string) { //nolint:golint
+	channel := &model.Channel{Id: channelId, Header: header}
+	m.log.Debugf("updating channelheader %#v, %#v", channelId, header)
+	_, resp := m.Client.UpdateChannel(channel)
+	if resp.Error != nil {
+		logrus.Error(resp.Error)
+	}
+}
+
+func (m *MMClient) UpdateLastViewed(channelId string) error { //nolint:golint
+	m.log.Debugf("posting lastview %#v", channelId)
+	view := &model.ChannelView{ChannelId: channelId}
+	_, resp := m.Client.ViewChannel(m.User.Id, view)
+	if resp.Error != nil {
+		m.log.Errorf("ChannelView update for %s failed: %s", channelId, resp.Error)
+		return resp.Error
+	}
+	return nil
+}

matterclient/helpers.go

@@ -0,0 +1,282 @@
+package matterclient
+
+import (
+	"crypto/md5" //nolint:gosec
+	"crypto/tls"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/http/cookiejar"
+	"net/url"
+	"strings"
+	"time"
+
+	"github.com/gorilla/websocket"
+	"github.com/jpillora/backoff"
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (m *MMClient) doLogin(firstConnection bool, b *backoff.Backoff) error {
+	var resp *model.Response
+	var appErr *model.AppError
+	var logmsg = "trying login"
+	var err error
+	for {
+		m.log.Debugf("%s %s %s %s", logmsg, m.Credentials.Team, m.Credentials.Login, m.Credentials.Server)
+		if m.Credentials.Token != "" {
+			resp, err = m.doLoginToken()
+			if err != nil {
+				return err
+			}
+		} else {
+			m.User, resp = m.Client.Login(m.Credentials.Login, m.Credentials.Pass)
+		}
+		appErr = resp.Error
+		if appErr != nil {
+			d := b.Duration()
+			m.log.Debug(appErr.DetailedError)
+			if firstConnection {
+				if appErr.Message == "" {
+					return errors.New(appErr.DetailedError)
+				}
+				return errors.New(appErr.Message)
+			}
+			m.log.Debugf("LOGIN: %s, reconnecting in %s", appErr, d)
+			time.Sleep(d)
+			logmsg = "retrying login"
+			continue
+		}
+		break
+	}
+	// reset timer
+	b.Reset()
+	return nil
+}
+
+func (m *MMClient) doLoginToken() (*model.Response, error) {
+	var resp *model.Response
+	var logmsg = "trying login"
+	m.Client.AuthType = model.HEADER_BEARER
+	m.Client.AuthToken = m.Credentials.Token
+	if m.Credentials.CookieToken {
+		m.log.Debugf(logmsg + " with cookie (MMAUTH) token")
+		m.Client.HttpClient.Jar = m.createCookieJar(m.Credentials.Token)
+	} else {
+		m.log.Debugf(logmsg + " with personal token")
+	}
+	m.User, resp = m.Client.GetMe("")
+	if resp.Error != nil {
+		return resp, resp.Error
+	}
+	if m.User == nil {
+		m.log.Errorf("LOGIN TOKEN: %s is invalid", m.Credentials.Pass)
+		return resp, errors.New("invalid token")
+	}
+	return resp, nil
+}
+
+func (m *MMClient) handleLoginToken() error {
+	switch {
+	case strings.Contains(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN):
+		token := strings.Split(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN+"=")
+		if len(token) != 2 {
+			return errors.New("incorrect MMAUTHTOKEN. valid input is MMAUTHTOKEN=yourtoken")
+		}
+		m.Credentials.Token = token[1]
+		m.Credentials.CookieToken = true
+	case strings.Contains(m.Credentials.Pass, "token="):
+		token := strings.Split(m.Credentials.Pass, "token=")
+		if len(token) != 2 {
+			return errors.New("incorrect personal token. valid input is token=yourtoken")
+		}
+		m.Credentials.Token = token[1]
+	}
+	return nil
+}
+
+func (m *MMClient) initClient(firstConnection bool, b *backoff.Backoff) error {
+	uriScheme := "https://"
+	if m.NoTLS {
+		uriScheme = "http://"
+	}
+	// login to mattermost
+	m.Client = model.NewAPIv4Client(uriScheme + m.Credentials.Server)
+	m.Client.HttpClient.Transport = &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}, //nolint:gosec
+		Proxy:           http.ProxyFromEnvironment,
+	}
+	m.Client.HttpClient.Timeout = time.Second * 10
+
+	// handle MMAUTHTOKEN and personal token
+	if err := m.handleLoginToken(); err != nil {
+		return err
+	}
+
+	// check if server alive, retry until
+	if err := m.serverAlive(firstConnection, b); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// initialize user and teams
+func (m *MMClient) initUser() error {
+	m.Lock()
+	defer m.Unlock()
+	// we only load all team data on initial login.
+	// all other updates are for channels from our (primary) team only.
+	//m.log.Debug("initUser(): loading all team data")
+	teams, resp := m.Client.GetTeamsForUser(m.User.Id, "")
+	if resp.Error != nil {
+		return resp.Error
+	}
+	for _, team := range teams {
+		mmusers, resp := m.Client.GetUsersInTeam(team.Id, 0, 50000, "")
+		if resp.Error != nil {
+			return errors.New(resp.Error.DetailedError)
+		}
+		usermap := make(map[string]*model.User)
+		for _, user := range mmusers {
+			usermap[user.Id] = user
+		}
+
+		t := &Team{Team: team, Users: usermap, Id: team.Id}
+
+		mmchannels, resp := m.Client.GetChannelsForTeamForUser(team.Id, m.User.Id, "")
+		if resp.Error != nil {
+			return resp.Error
+		}
+		t.Channels = mmchannels
+		mmchannels, resp = m.Client.GetPublicChannelsForTeam(team.Id, 0, 5000, "")
+		if resp.Error != nil {
+			return resp.Error
+		}
+		t.MoreChannels = mmchannels
+		m.OtherTeams = append(m.OtherTeams, t)
+		if team.Name == m.Credentials.Team {
+			m.Team = t
+			m.log.Debugf("initUser(): found our team %s (id: %s)", team.Name, team.Id)
+		}
+		// add all users
+		for k, v := range t.Users {
+			m.Users[k] = v
+		}
+	}
+	return nil
+}
+
+func (m *MMClient) serverAlive(firstConnection bool, b *backoff.Backoff) error {
+	defer b.Reset()
+	for {
+		d := b.Duration()
+		// bogus call to get the serverversion
+		_, resp := m.Client.Logout()
+		if resp.Error != nil {
+			return fmt.Errorf("%#v", resp.Error.Error())
+		}
+		if firstConnection && !supportedVersion(resp.ServerVersion) {
+			return fmt.Errorf("unsupported mattermost version: %s", resp.ServerVersion)
+		}
+		m.ServerVersion = resp.ServerVersion
+		if m.ServerVersion == "" {
+			m.log.Debugf("Server not up yet, reconnecting in %s", d)
+			time.Sleep(d)
+		} else {
+			m.log.Infof("Found version %s", m.ServerVersion)
+			return nil
+		}
+	}
+}
+
+func (m *MMClient) wsConnect() {
+	b := &backoff.Backoff{
+		Min:    time.Second,
+		Max:    5 * time.Minute,
+		Jitter: true,
+	}
+
+	m.WsConnected = false
+	wsScheme := "wss://"
+	if m.NoTLS {
+		wsScheme = "ws://"
+	}
+
+	// setup websocket connection
+	wsurl := wsScheme + m.Credentials.Server + model.API_URL_SUFFIX_V4 + "/websocket"
+	header := http.Header{}
+	header.Set(model.HEADER_AUTH, "BEARER "+m.Client.AuthToken)
+
+	m.log.Debugf("WsClient: making connection: %s", wsurl)
+	for {
+		wsDialer := &websocket.Dialer{
+			TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}, //nolint:gosec
+			Proxy:           http.ProxyFromEnvironment,
+		}
+		var err error
+		m.WsClient, _, err = wsDialer.Dial(wsurl, header)
+		if err != nil {
+			d := b.Duration()
+			m.log.Debugf("WSS: %s, reconnecting in %s", err, d)
+			time.Sleep(d)
+			continue
+		}
+		break
+	}
+
+	m.log.Debug("WsClient: connected")
+	m.WsSequence = 1
+	m.WsPingChan = make(chan *model.WebSocketResponse)
+	// only start to parse WS messages when login is completely done
+	m.WsConnected = true
+}
+
+func (m *MMClient) createCookieJar(token string) *cookiejar.Jar {
+	var cookies []*http.Cookie
+	jar, _ := cookiejar.New(nil)
+	firstCookie := &http.Cookie{
+		Name:   "MMAUTHTOKEN",
+		Value:  token,
+		Path:   "/",
+		Domain: m.Credentials.Server,
+	}
+	cookies = append(cookies, firstCookie)
+	cookieURL, _ := url.Parse("https://" + m.Credentials.Server)
+	jar.SetCookies(cookieURL, cookies)
+	return jar
+}
+
+func (m *MMClient) checkAlive() error {
+	// check if session still is valid
+	_, resp := m.Client.GetMe("")
+	if resp.Error != nil {
+		return resp.Error
+	}
+	m.log.Debug("WS PING")
+	return m.sendWSRequest("ping", nil)
+}
+
+func (m *MMClient) sendWSRequest(action string, data map[string]interface{}) error {
+	req := &model.WebSocketRequest{}
+	req.Seq = m.WsSequence
+	req.Action = action
+	req.Data = data
+	m.WsSequence++
+	m.log.Debugf("sendWsRequest %#v", req)
+	return m.WsClient.WriteJSON(req)
+}
+
+func supportedVersion(version string) bool {
+	if strings.HasPrefix(version, "3.8.0") ||
+		strings.HasPrefix(version, "3.9.0") ||
+		strings.HasPrefix(version, "3.10.0") ||
+		strings.HasPrefix(version, "4.") ||
+		strings.HasPrefix(version, "5.") {
+		return true
+	}
+	return false
+}
+
+func digestString(s string) string {
+	return fmt.Sprintf("%x", md5.Sum([]byte(s))) //nolint:gosec
+}

matterclient/matterclient.go

@@ -1,27 +1,26 @@
 package matterclient
 
 import (
-	"crypto/tls"
 	"encoding/json"
-	"errors"
-	"net/http"
-	"net/http/cookiejar"
-	"net/url"
+	"fmt"
 	"strings"
 	"sync"
 	"time"
 
-	log "github.com/Sirupsen/logrus"
-
 	"github.com/gorilla/websocket"
+	"github.com/hashicorp/golang-lru"
 	"github.com/jpillora/backoff"
-	"github.com/mattermost/platform/model"
+	prefixed "github.com/matterbridge/logrus-prefixed-formatter"
+	"github.com/mattermost/mattermost-server/model"
+	"github.com/sirupsen/logrus"
 )
 
 type Credentials struct {
 	Login         string
 	Team          string
 	Pass          string
+	Token         string
+	CookieToken   bool
 	Server        string
 	NoTLS         bool
 	SkipTLSVerify bool
@@ -34,52 +33,68 @@ type Message struct {
 	Channel  string
 	Username string
 	Text     string
+	Type     string
+	UserID   string
 }
 
+//nolint:golint
 type Team struct {
 	Team         *model.Team
 	Id           string
-	Channels     *model.ChannelList
-	MoreChannels *model.ChannelList
+	Channels     []*model.Channel
+	MoreChannels []*model.Channel
 	Users        map[string]*model.User
 }
 
 type MMClient struct {
 	sync.RWMutex
 	*Credentials
-	Team        *Team
-	OtherTeams  []*Team
-	Client      *model.Client
-	User        *model.User
-	Users       map[string]*model.User
-	MessageChan chan *Message
-	log         *log.Entry
-	WsClient    *websocket.Conn
-	WsQuit      bool
-	WsAway      bool
-	WsConnected bool
-	WsSequence  int64
-	WsPingChan  chan *model.WebSocketResponse
+	Team          *Team
+	OtherTeams    []*Team
+	Client        *model.Client4
+	User          *model.User
+	Users         map[string]*model.User
+	MessageChan   chan *Message
+	log           *logrus.Entry
+	WsClient      *websocket.Conn
+	WsQuit        bool
+	WsAway        bool
+	WsConnected   bool
+	WsSequence    int64
+	WsPingChan    chan *model.WebSocketResponse
+	ServerVersion string
+	OnWsConnect   func()
+	lruCache      *lru.Cache
 }
 
 func New(login, pass, team, server string) *MMClient {
 	cred := &Credentials{Login: login, Pass: pass, Team: team, Server: server}
 	mmclient := &MMClient{Credentials: cred, MessageChan: make(chan *Message, 100), Users: make(map[string]*model.User)}
-	mmclient.log = log.WithFields(log.Fields{"module": "matterclient"})
-	log.SetFormatter(&log.TextFormatter{FullTimestamp: true})
+	logrus.SetFormatter(&prefixed.TextFormatter{PrefixPadding: 13, DisableColors: true})
+	mmclient.log = logrus.WithFields(logrus.Fields{"prefix": "matterclient"})
+	mmclient.lruCache, _ = lru.New(500)
 	return mmclient
 }
 
+func (m *MMClient) SetDebugLog() {
+	logrus.SetFormatter(&prefixed.TextFormatter{PrefixPadding: 13, DisableColors: true, FullTimestamp: false, ForceFormatting: true})
+}
+
 func (m *MMClient) SetLogLevel(level string) {
-	l, err := log.ParseLevel(level)
+	l, err := logrus.ParseLevel(level)
 	if err != nil {
-		log.SetLevel(log.InfoLevel)
+		logrus.SetLevel(logrus.InfoLevel)
 		return
 	}
-	log.SetLevel(l)
+	logrus.SetLevel(l)
 }
 
 func (m *MMClient) Login() error {
+	// check if this is a first connect or a reconnection
+	firstConnection := true
+	if m.WsConnected {
+		firstConnection = false
+	}
 	m.WsConnected = false
 	if m.WsQuit {
 		return nil
@@ -89,93 +104,29 @@ func (m *MMClient) Login() error {
 		Max:    5 * time.Minute,
 		Jitter: true,
 	}
-	uriScheme := "https://"
-	wsScheme := "wss://"
-	if m.NoTLS {
-		uriScheme = "http://"
-		wsScheme = "ws://"
-	}
-	// login to mattermost
-	m.Client = model.NewClient(uriScheme + m.Credentials.Server)
-	m.Client.HttpClient.Transport = &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}}
-	var myinfo *model.Result
-	var appErr *model.AppError
-	var logmsg = "trying login"
-	for {
-		m.log.Debugf("%s %s %s %s", logmsg, m.Credentials.Team, m.Credentials.Login, m.Credentials.Server)
-		if strings.Contains(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN) {
-			m.log.Debugf(logmsg+" with %s", model.SESSION_COOKIE_TOKEN)
-			token := strings.Split(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN+"=")
-			if len(token) != 2 {
-				return errors.New("incorrect MMAUTHTOKEN. valid input is MMAUTHTOKEN=yourtoken")
-			}
-			m.Client.HttpClient.Jar = m.createCookieJar(token[1])
-			m.Client.MockSession(token[1])
-			myinfo, appErr = m.Client.GetMe("")
-			if appErr != nil {
-				return errors.New(appErr.DetailedError)
-			}
-			if myinfo.Data.(*model.User) == nil {
-				m.log.Errorf("LOGIN TOKEN: %s is invalid", m.Credentials.Pass)
-				return errors.New("invalid " + model.SESSION_COOKIE_TOKEN)
-			}
-		} else {
-			myinfo, appErr = m.Client.Login(m.Credentials.Login, m.Credentials.Pass)
-		}
-		if appErr != nil {
-			d := b.Duration()
-			m.log.Debug(appErr.DetailedError)
-			if !strings.Contains(appErr.DetailedError, "connection refused") &&
-				!strings.Contains(appErr.DetailedError, "invalid character") {
-				if appErr.Message == "" {
-					return errors.New(appErr.DetailedError)
-				}
-				return errors.New(appErr.Message)
-			}
-			m.log.Debugf("LOGIN: %s, reconnecting in %s", appErr, d)
-			time.Sleep(d)
-			logmsg = "retrying login"
-			continue
-		}
-		break
-	}
-	// reset timer
-	b.Reset()
 
-	err := m.initUser()
-	if err != nil {
+	// do initialization setup
+	if err := m.initClient(firstConnection, b); err != nil {
+		return err
+	}
+
+	if err := m.doLogin(firstConnection, b); err != nil {
+		return err
+	}
+
+	if err := m.initUser(); err != nil {
 		return err
 	}
 
 	if m.Team == nil {
-		return errors.New("team not found")
-	}
-	// set our team id as default route
-	m.Client.SetTeamId(m.Team.Id)
-
-	// setup websocket connection
-	wsurl := wsScheme + m.Credentials.Server + model.API_URL_SUFFIX + "/users/websocket"
-	header := http.Header{}
-	header.Set(model.HEADER_AUTH, "BEARER "+m.Client.AuthToken)
-
-	m.log.Debug("WsClient: making connection")
-	for {
-		wsDialer := &websocket.Dialer{Proxy: http.ProxyFromEnvironment, TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}}
-		m.WsClient, _, err = wsDialer.Dial(wsurl, header)
-		if err != nil {
-			d := b.Duration()
-			m.log.Debugf("WSS: %s, reconnecting in %s", err, d)
-			time.Sleep(d)
-			continue
+		validTeamNames := make([]string, len(m.OtherTeams))
+		for i, t := range m.OtherTeams {
+			validTeamNames[i] = t.Team.Name
 		}
-		break
+		return fmt.Errorf("Team '%s' not found in %v", m.Credentials.Team, validTeamNames)
 	}
-	b.Reset()
 
-	m.WsSequence = 1
-	m.WsPingChan = make(chan *model.WebSocketResponse)
-	// only start to parse WS messages when login is completely done
-	m.WsConnected = true
+	m.wsConnect()
 
 	return nil
 }
@@ -185,9 +136,13 @@ func (m *MMClient) Logout() error {
 	m.WsQuit = true
 	m.WsClient.Close()
 	m.WsClient.UnderlyingConn().Close()
-	_, err := m.Client.Logout()
-	if err != nil {
-		return err
+	if strings.Contains(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN) {
+		m.log.Debug("Not invalidating session in logout, credential is a token")
+		return nil
+	}
+	_, resp := m.Client.Logout()
+	if resp.Error != nil {
+		return resp.Error
 	}
 	return nil
 }
@@ -210,435 +165,76 @@ func (m *MMClient) WsReceiver() {
 		if _, rawMsg, err = m.WsClient.ReadMessage(); err != nil {
 			m.log.Error("error:", err)
 			// reconnect
-			m.Login()
+			m.wsConnect()
 		}
 
 		var event model.WebSocketEvent
 		if err := json.Unmarshal(rawMsg, &event); err == nil && event.IsValid() {
-			m.log.Debugf("WsReceiver: %#v", event)
+			m.log.Debugf("WsReceiver event: %#v", event)
 			msg := &Message{Raw: &event, Team: m.Credentials.Team}
 			m.parseMessage(msg)
-			m.MessageChan <- msg
+			// check if we didn't empty the message
+			if msg.Text != "" {
+				m.MessageChan <- msg
+				continue
+			}
+			// if we have file attached but the message is empty, also send it
+			if msg.Post != nil {
+				if msg.Text != "" || len(msg.Post.FileIds) > 0 || msg.Post.Type == "slack_attachment" {
+					m.MessageChan <- msg
+				}
+			}
 			continue
 		}
 
 		var response model.WebSocketResponse
 		if err := json.Unmarshal(rawMsg, &response); err == nil && response.IsValid() {
-			m.log.Debugf("WsReceiver: %#v", response)
+			m.log.Debugf("WsReceiver response: %#v", response)
 			m.parseResponse(response)
 			continue
 		}
 	}
 }
 
-func (m *MMClient) parseMessage(rmsg *Message) {
-	switch rmsg.Raw.Event {
-	case model.WEBSOCKET_EVENT_POSTED:
-		m.parseActionPost(rmsg)
-		/*
-			case model.ACTION_USER_REMOVED:
-				m.handleWsActionUserRemoved(&rmsg)
-			case model.ACTION_USER_ADDED:
-				m.handleWsActionUserAdded(&rmsg)
-		*/
-	}
-}
-
-func (m *MMClient) parseResponse(rmsg model.WebSocketResponse) {
-	if rmsg.Data != nil {
-		// ping reply
-		if rmsg.Data["text"].(string) == "pong" {
-			m.WsPingChan <- &rmsg
-		}
-	}
-}
-
-func (m *MMClient) parseActionPost(rmsg *Message) {
-	data := model.PostFromJson(strings.NewReader(rmsg.Raw.Data["post"].(string)))
-	// we don't have the user, refresh the userlist
-	if m.GetUser(data.UserId) == nil {
-		m.UpdateUsers()
-	}
-	rmsg.Username = m.GetUser(data.UserId).Username
-	rmsg.Channel = m.GetChannelName(data.ChannelId)
-	rmsg.Team = m.GetTeamName(rmsg.Raw.TeamId)
-	// direct message
-	if rmsg.Raw.Data["channel_type"] == "D" {
-		rmsg.Channel = m.GetUser(data.UserId).Username
-	}
-	rmsg.Text = data.Message
-	rmsg.Post = data
-	return
-}
-
-func (m *MMClient) UpdateUsers() error {
-	mmusers, err := m.Client.GetProfilesForDirectMessageList(m.Team.Id)
-	if err != nil {
-		return errors.New(err.DetailedError)
-	}
-	m.Lock()
-	m.Users = mmusers.Data.(map[string]*model.User)
-	m.Unlock()
-	return nil
-}
-
-func (m *MMClient) UpdateChannels() error {
-	mmchannels, err := m.Client.GetChannels("")
-	if err != nil {
-		return errors.New(err.DetailedError)
-	}
-	mmchannels2, err := m.Client.GetMoreChannels("")
-	if err != nil {
-		return errors.New(err.DetailedError)
-	}
-	m.Lock()
-	m.Team.Channels = mmchannels.Data.(*model.ChannelList)
-	m.Team.MoreChannels = mmchannels2.Data.(*model.ChannelList)
-	m.Unlock()
-	return nil
-}
-
-func (m *MMClient) GetChannelName(channelId string) string {
-	m.RLock()
-	defer m.RUnlock()
-	for _, t := range m.OtherTeams {
-		for _, channel := range append(t.Channels.Channels, t.MoreChannels.Channels...) {
-			if channel.Id == channelId {
-				return channel.Name
-			}
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) GetChannelId(name string, teamId string) string {
-	m.RLock()
-	defer m.RUnlock()
-	if teamId == "" {
-		teamId = m.Team.Id
-	}
-	for _, t := range m.OtherTeams {
-		if t.Id == teamId {
-			for _, channel := range append(t.Channels.Channels, t.MoreChannels.Channels...) {
-				if channel.Name == name {
-					return channel.Id
-				}
-			}
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) GetChannelHeader(channelId string) string {
-	m.RLock()
-	defer m.RUnlock()
-	for _, t := range m.OtherTeams {
-		for _, channel := range append(t.Channels.Channels, t.MoreChannels.Channels...) {
-			if channel.Id == channelId {
-				return channel.Header
-			}
-
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) PostMessage(channelId string, text string) {
-	post := &model.Post{ChannelId: channelId, Message: text}
-	m.Client.CreatePost(post)
-}
-
-func (m *MMClient) JoinChannel(channelId string) error {
-	m.RLock()
-	defer m.RUnlock()
-	for _, c := range m.Team.Channels.Channels {
-		if c.Id == channelId {
-			m.log.Debug("Not joining ", channelId, " already joined.")
-			return nil
-		}
-	}
-	m.log.Debug("Joining ", channelId)
-	_, err := m.Client.JoinChannel(channelId)
-	if err != nil {
-		return errors.New("failed to join")
-	}
-	return nil
-}
-
-func (m *MMClient) GetPostsSince(channelId string, time int64) *model.PostList {
-	res, err := m.Client.GetPostsSince(channelId, time)
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) SearchPosts(query string) *model.PostList {
-	res, err := m.Client.SearchPosts(query, false)
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) GetPosts(channelId string, limit int) *model.PostList {
-	res, err := m.Client.GetPosts(channelId, 0, limit, "")
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) GetPublicLink(filename string) string {
-	res, err := m.Client.GetPublicLink(filename)
-	if err != nil {
-		return ""
-	}
-	return res.Data.(string)
-}
-
-func (m *MMClient) GetPublicLinks(filenames []string) []string {
-	var output []string
-	for _, f := range filenames {
-		res, err := m.Client.GetPublicLink(f)
-		if err != nil {
-			continue
-		}
-		output = append(output, res.Data.(string))
-	}
-	return output
-}
-
-func (m *MMClient) UpdateChannelHeader(channelId string, header string) {
-	data := make(map[string]string)
-	data["channel_id"] = channelId
-	data["channel_header"] = header
-	m.log.Debugf("updating channelheader %#v, %#v", channelId, header)
-	_, err := m.Client.UpdateChannelHeader(data)
-	if err != nil {
-		log.Error(err)
-	}
-}
-
-func (m *MMClient) UpdateLastViewed(channelId string) {
-	m.log.Debugf("posting lastview %#v", channelId)
-	_, err := m.Client.UpdateLastViewedAt(channelId, true)
-	if err != nil {
-		m.log.Error(err)
-	}
-}
-
-func (m *MMClient) UsernamesInChannel(channelId string) []string {
-	ceiRes, err := m.Client.GetChannelExtraInfo(channelId, 5000, "")
-	if err != nil {
-		m.log.Errorf("UsernamesInChannel(%s) failed: %s", channelId, err)
-		return []string{}
-	}
-	extra := ceiRes.Data.(*model.ChannelExtra)
-	result := []string{}
-	for _, member := range extra.Members {
-		result = append(result, member.Username)
-	}
-	return result
-}
-
-func (m *MMClient) createCookieJar(token string) *cookiejar.Jar {
-	var cookies []*http.Cookie
-	jar, _ := cookiejar.New(nil)
-	firstCookie := &http.Cookie{
-		Name:   "MMAUTHTOKEN",
-		Value:  token,
-		Path:   "/",
-		Domain: m.Credentials.Server,
-	}
-	cookies = append(cookies, firstCookie)
-	cookieURL, _ := url.Parse("https://" + m.Credentials.Server)
-	jar.SetCookies(cookieURL, cookies)
-	return jar
-}
-
-// SendDirectMessage sends a direct message to specified user
-func (m *MMClient) SendDirectMessage(toUserId string, msg string) {
-	m.log.Debugf("SendDirectMessage to %s, msg %s", toUserId, msg)
-	// create DM channel (only happens on first message)
-	_, err := m.Client.CreateDirectChannel(toUserId)
-	if err != nil {
-		m.log.Debugf("SendDirectMessage to %#v failed: %s", toUserId, err)
-	}
-	channelName := model.GetDMNameFromIds(toUserId, m.User.Id)
-
-	// update our channels
-	mmchannels, _ := m.Client.GetChannels("")
-	m.Lock()
-	m.Team.Channels = mmchannels.Data.(*model.ChannelList)
-	m.Unlock()
-
-	// build & send the message
-	msg = strings.Replace(msg, "\r", "", -1)
-	post := &model.Post{ChannelId: m.GetChannelId(channelName, ""), Message: msg}
-	m.Client.CreatePost(post)
-}
-
-// GetTeamName returns the name of the specified teamId
-func (m *MMClient) GetTeamName(teamId string) string {
-	m.RLock()
-	defer m.RUnlock()
-	for _, t := range m.OtherTeams {
-		if t.Id == teamId {
-			return t.Team.Name
-		}
-	}
-	return ""
-}
-
-// GetChannels returns all channels we're members off
-func (m *MMClient) GetChannels() []*model.Channel {
-	m.RLock()
-	defer m.RUnlock()
-	var channels []*model.Channel
-	// our primary team channels first
-	channels = append(channels, m.Team.Channels.Channels...)
-	for _, t := range m.OtherTeams {
-		if t.Id != m.Team.Id {
-			channels = append(channels, t.Channels.Channels...)
-		}
-	}
-	return channels
-}
-
-// GetMoreChannels returns existing channels where we're not a member off.
-func (m *MMClient) GetMoreChannels() []*model.Channel {
-	m.RLock()
-	defer m.RUnlock()
-	var channels []*model.Channel
-	for _, t := range m.OtherTeams {
-		channels = append(channels, t.MoreChannels.Channels...)
-	}
-	return channels
-}
-
-// GetTeamFromChannel returns teamId belonging to channel (DM channels have no teamId).
-func (m *MMClient) GetTeamFromChannel(channelId string) string {
-	m.RLock()
-	defer m.RUnlock()
-	var channels []*model.Channel
-	for _, t := range m.OtherTeams {
-		channels = append(channels, t.Channels.Channels...)
-		channels = append(channels, t.MoreChannels.Channels...)
-		for _, c := range channels {
-			if c.Id == channelId {
-				return t.Id
-			}
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) GetLastViewedAt(channelId string) int64 {
-	m.RLock()
-	defer m.RUnlock()
-	for _, t := range m.OtherTeams {
-		if _, ok := t.Channels.Members[channelId]; ok {
-			return t.Channels.Members[channelId].LastViewedAt
-		}
-	}
-	return 0
-}
-
-func (m *MMClient) GetUsers() map[string]*model.User {
-	users := make(map[string]*model.User)
-	m.RLock()
-	defer m.RUnlock()
-	for k, v := range m.Users {
-		users[k] = v
-	}
-	return users
-}
-
-func (m *MMClient) GetUser(userId string) *model.User {
-	m.RLock()
-	defer m.RUnlock()
-	return m.Users[userId]
-}
-
-func (m *MMClient) GetStatus(userId string) string {
-	res, err := m.Client.GetStatuses()
-	if err != nil {
-		return ""
-	}
-	status := res.Data.(map[string]string)
-	if status[userId] == model.STATUS_AWAY {
-		return "away"
-	}
-	if status[userId] == model.STATUS_ONLINE {
-		return "online"
-	}
-	return "offline"
-}
-
 func (m *MMClient) StatusLoop() {
+	retries := 0
+	backoff := time.Second * 60
+	if m.OnWsConnect != nil {
+		m.OnWsConnect()
+	}
+	m.log.Debug("StatusLoop:", m.OnWsConnect != nil)
 	for {
 		if m.WsQuit {
 			return
 		}
 		if m.WsConnected {
-			m.log.Debug("WS PING")
-			m.sendWSRequest("ping", nil)
+			if err := m.checkAlive(); err != nil {
+				logrus.Errorf("Connection is not alive: %#v", err)
+			}
 			select {
 			case <-m.WsPingChan:
 				m.log.Debug("WS PONG received")
+				backoff = time.Second * 60
 			case <-time.After(time.Second * 5):
-				m.Logout()
-				m.WsQuit = false
-				m.Login()
+				if retries > 3 {
+					m.log.Debug("StatusLoop() timeout")
+					m.Logout()
+					m.WsQuit = false
+					err := m.Login()
+					if err != nil {
+						logrus.Errorf("Login failed: %#v", err)
+						break
+					}
+					if m.OnWsConnect != nil {
+						m.OnWsConnect()
+					}
+					go m.WsReceiver()
+				} else {
+					retries++
+					backoff = time.Second * 5
+				}
 			}
 		}
-		time.Sleep(time.Second * 60)
+		time.Sleep(backoff)
 	}
 }
-
-// initialize user and teams
-func (m *MMClient) initUser() error {
-	m.Lock()
-	defer m.Unlock()
-	m.log.Debug("initUser()")
-	initLoad, err := m.Client.GetInitialLoad()
-	if err != nil {
-		return err
-	}
-	initData := initLoad.Data.(*model.InitialLoad)
-	m.User = initData.User
-	// we only load all team data on initial login.
-	// all other updates are for channels from our (primary) team only.
-	m.log.Debug("initUser(): loading all team data")
-	for _, v := range initData.Teams {
-		m.Client.SetTeamId(v.Id)
-		mmusers, _ := m.Client.GetProfiles(v.Id, "")
-		t := &Team{Team: v, Users: mmusers.Data.(map[string]*model.User), Id: v.Id}
-		mmchannels, _ := m.Client.GetChannels("")
-		t.Channels = mmchannels.Data.(*model.ChannelList)
-		mmchannels, _ = m.Client.GetMoreChannels("")
-		t.MoreChannels = mmchannels.Data.(*model.ChannelList)
-		m.OtherTeams = append(m.OtherTeams, t)
-		if v.Name == m.Credentials.Team {
-			m.Team = t
-			m.log.Debugf("initUser(): found our team %s (id: %s)", v.Name, v.Id)
-		}
-		// add all users
-		for k, v := range t.Users {
-			m.Users[k] = v
-		}
-	}
-	return nil
-}
-
-func (m *MMClient) sendWSRequest(action string, data map[string]interface{}) error {
-	req := &model.WebSocketRequest{}
-	req.Seq = m.WsSequence
-	req.Action = action
-	req.Data = data
-	m.WsSequence++
-	m.log.Debugf("sendWsRequest %#v", req)
-	m.WsClient.WriteJSON(req)
-	return nil
-}

matterclient/messages.go

@@ -0,0 +1,207 @@
+package matterclient
+
+import (
+	"strings"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (m *MMClient) parseActionPost(rmsg *Message) {
+	// add post to cache, if it already exists don't relay this again.
+	// this should fix reposts
+	if ok, _ := m.lruCache.ContainsOrAdd(digestString(rmsg.Raw.Data["post"].(string)), true); ok {
+		m.log.Debugf("message %#v in cache, not processing again", rmsg.Raw.Data["post"].(string))
+		rmsg.Text = ""
+		return
+	}
+	data := model.PostFromJson(strings.NewReader(rmsg.Raw.Data["post"].(string)))
+	// we don't have the user, refresh the userlist
+	if m.GetUser(data.UserId) == nil {
+		m.log.Infof("User '%v' is not known, ignoring message '%#v'",
+			data.UserId, data)
+		return
+	}
+	rmsg.Username = m.GetUserName(data.UserId)
+	rmsg.Channel = m.GetChannelName(data.ChannelId)
+	rmsg.UserID = data.UserId
+	rmsg.Type = data.Type
+	teamid, _ := rmsg.Raw.Data["team_id"].(string)
+	// edit messsages have no team_id for some reason
+	if teamid == "" {
+		// we can find the team_id from the channelid
+		teamid = m.GetChannelTeamId(data.ChannelId)
+		rmsg.Raw.Data["team_id"] = teamid
+	}
+	if teamid != "" {
+		rmsg.Team = m.GetTeamName(teamid)
+	}
+	// direct message
+	if rmsg.Raw.Data["channel_type"] == "D" {
+		rmsg.Channel = m.GetUser(data.UserId).Username
+	}
+	rmsg.Text = data.Message
+	rmsg.Post = data
+}
+
+func (m *MMClient) parseMessage(rmsg *Message) {
+	switch rmsg.Raw.Event {
+	case model.WEBSOCKET_EVENT_POSTED, model.WEBSOCKET_EVENT_POST_EDITED, model.WEBSOCKET_EVENT_POST_DELETED:
+		m.parseActionPost(rmsg)
+	case "user_updated":
+		user := rmsg.Raw.Data["user"].(map[string]interface{})
+		if _, ok := user["id"].(string); ok {
+			m.UpdateUser(user["id"].(string))
+		}
+	case "group_added":
+		if err := m.UpdateChannels(); err != nil {
+			m.log.Errorf("failed to update channels: %#v", err)
+		}
+		/*
+			case model.ACTION_USER_REMOVED:
+				m.handleWsActionUserRemoved(&rmsg)
+			case model.ACTION_USER_ADDED:
+				m.handleWsActionUserAdded(&rmsg)
+		*/
+	}
+}
+
+func (m *MMClient) parseResponse(rmsg model.WebSocketResponse) {
+	if rmsg.Data != nil {
+		// ping reply
+		if rmsg.Data["text"].(string) == "pong" {
+			m.WsPingChan <- &rmsg
+		}
+	}
+}
+
+func (m *MMClient) DeleteMessage(postId string) error { //nolint:golint
+	_, resp := m.Client.DeletePost(postId)
+	if resp.Error != nil {
+		return resp.Error
+	}
+	return nil
+}
+
+func (m *MMClient) EditMessage(postId string, text string) (string, error) { //nolint:golint
+	post := &model.Post{Message: text}
+	res, resp := m.Client.UpdatePost(postId, post)
+	if resp.Error != nil {
+		return "", resp.Error
+	}
+	return res.Id, nil
+}
+
+func (m *MMClient) GetFileLinks(filenames []string) []string {
+	uriScheme := "https://"
+	if m.NoTLS {
+		uriScheme = "http://"
+	}
+
+	var output []string
+	for _, f := range filenames {
+		res, resp := m.Client.GetFileLink(f)
+		if resp.Error != nil {
+			// public links is probably disabled, create the link ourselves
+			output = append(output, uriScheme+m.Credentials.Server+model.API_URL_SUFFIX_V4+"/files/"+f)
+			continue
+		}
+		output = append(output, res)
+	}
+	return output
+}
+
+func (m *MMClient) GetPosts(channelId string, limit int) *model.PostList { //nolint:golint
+	res, resp := m.Client.GetPostsForChannel(channelId, 0, limit, "")
+	if resp.Error != nil {
+		return nil
+	}
+	return res
+}
+
+func (m *MMClient) GetPostsSince(channelId string, time int64) *model.PostList { //nolint:golint
+	res, resp := m.Client.GetPostsSince(channelId, time)
+	if resp.Error != nil {
+		return nil
+	}
+	return res
+}
+
+func (m *MMClient) GetPublicLink(filename string) string {
+	res, resp := m.Client.GetFileLink(filename)
+	if resp.Error != nil {
+		return ""
+	}
+	return res
+}
+
+func (m *MMClient) GetPublicLinks(filenames []string) []string {
+	var output []string
+	for _, f := range filenames {
+		res, resp := m.Client.GetFileLink(f)
+		if resp.Error != nil {
+			continue
+		}
+		output = append(output, res)
+	}
+	return output
+}
+
+func (m *MMClient) PostMessage(channelId string, text string, rootId string) (string, error) { //nolint:golint
+	post := &model.Post{ChannelId: channelId, Message: text, RootId: rootId}
+	res, resp := m.Client.CreatePost(post)
+	if resp.Error != nil {
+		return "", resp.Error
+	}
+	return res.Id, nil
+}
+
+func (m *MMClient) PostMessageWithFiles(channelId string, text string, rootId string, fileIds []string) (string, error) { //nolint:golint
+	post := &model.Post{ChannelId: channelId, Message: text, RootId: rootId, FileIds: fileIds}
+	res, resp := m.Client.CreatePost(post)
+	if resp.Error != nil {
+		return "", resp.Error
+	}
+	return res.Id, nil
+}
+
+func (m *MMClient) SearchPosts(query string) *model.PostList {
+	res, resp := m.Client.SearchPosts(m.Team.Id, query, false)
+	if resp.Error != nil {
+		return nil
+	}
+	return res
+}
+
+// SendDirectMessage sends a direct message to specified user
+func (m *MMClient) SendDirectMessage(toUserId string, msg string, rootId string) { //nolint:golint
+	m.SendDirectMessageProps(toUserId, msg, rootId, nil)
+}
+
+func (m *MMClient) SendDirectMessageProps(toUserId string, msg string, rootId string, props map[string]interface{}) { //nolint:golint
+	m.log.Debugf("SendDirectMessage to %s, msg %s", toUserId, msg)
+	// create DM channel (only happens on first message)
+	_, resp := m.Client.CreateDirectChannel(m.User.Id, toUserId)
+	if resp.Error != nil {
+		m.log.Debugf("SendDirectMessage to %#v failed: %s", toUserId, resp.Error)
+		return
+	}
+	channelName := model.GetDMNameFromIds(toUserId, m.User.Id)
+
+	// update our channels
+	if err := m.UpdateChannels(); err != nil {
+		m.log.Errorf("failed to update channels: %#v", err)
+	}
+
+	// build & send the message
+	msg = strings.Replace(msg, "\r", "", -1)
+	post := &model.Post{ChannelId: m.GetChannelId(channelName, m.Team.Id), Message: msg, RootId: rootId, Props: props}
+	m.Client.CreatePost(post)
+}
+
+func (m *MMClient) UploadFile(data []byte, channelId string, filename string) (string, error) { //nolint:golint
+	f, resp := m.Client.UploadFile(data, channelId, filename)
+	if resp.Error != nil {
+		return "", resp.Error
+	}
+	return f.FileInfos[0].Id, nil
+}

matterclient/users.go

@@ -0,0 +1,154 @@
+package matterclient
+
+import (
+	"errors"
+
+	"github.com/mattermost/mattermost-server/model"
+)
+
+func (m *MMClient) GetNickName(userId string) string { //nolint:golint
+	user := m.GetUser(userId)
+	if user != nil {
+		return user.Nickname
+	}
+	return ""
+}
+
+func (m *MMClient) GetStatus(userId string) string { //nolint:golint
+	res, resp := m.Client.GetUserStatus(userId, "")
+	if resp.Error != nil {
+		return ""
+	}
+	if res.Status == model.STATUS_AWAY {
+		return "away"
+	}
+	if res.Status == model.STATUS_ONLINE {
+		return "online"
+	}
+	return "offline"
+}
+
+func (m *MMClient) GetStatuses() map[string]string {
+	var ids []string
+	statuses := make(map[string]string)
+	for id := range m.Users {
+		ids = append(ids, id)
+	}
+	res, resp := m.Client.GetUsersStatusesByIds(ids)
+	if resp.Error != nil {
+		return statuses
+	}
+	for _, status := range res {
+		statuses[status.UserId] = "offline"
+		if status.Status == model.STATUS_AWAY {
+			statuses[status.UserId] = "away"
+		}
+		if status.Status == model.STATUS_ONLINE {
+			statuses[status.UserId] = "online"
+		}
+	}
+	return statuses
+}
+
+func (m *MMClient) GetTeamId() string { //nolint:golint
+	return m.Team.Id
+}
+
+// GetTeamName returns the name of the specified teamId
+func (m *MMClient) GetTeamName(teamId string) string { //nolint:golint
+	m.RLock()
+	defer m.RUnlock()
+	for _, t := range m.OtherTeams {
+		if t.Id == teamId {
+			return t.Team.Name
+		}
+	}
+	return ""
+}
+
+func (m *MMClient) GetUser(userId string) *model.User { //nolint:golint
+	m.Lock()
+	defer m.Unlock()
+	_, ok := m.Users[userId]
+	if !ok {
+		res, resp := m.Client.GetUser(userId, "")
+		if resp.Error != nil {
+			return nil
+		}
+		m.Users[userId] = res
+	}
+	return m.Users[userId]
+}
+
+func (m *MMClient) GetUserName(userId string) string { //nolint:golint
+	user := m.GetUser(userId)
+	if user != nil {
+		return user.Username
+	}
+	return ""
+}
+
+func (m *MMClient) GetUsers() map[string]*model.User {
+	users := make(map[string]*model.User)
+	m.RLock()
+	defer m.RUnlock()
+	for k, v := range m.Users {
+		users[k] = v
+	}
+	return users
+}
+
+func (m *MMClient) UpdateUsers() error {
+	mmusers, resp := m.Client.GetUsers(0, 50000, "")
+	if resp.Error != nil {
+		return errors.New(resp.Error.DetailedError)
+	}
+	m.Lock()
+	for _, user := range mmusers {
+		m.Users[user.Id] = user
+	}
+	m.Unlock()
+	return nil
+}
+
+func (m *MMClient) UpdateUserNick(nick string) error {
+	user := m.User
+	user.Nickname = nick
+	_, resp := m.Client.UpdateUser(user)
+	if resp.Error != nil {
+		return resp.Error
+	}
+	return nil
+}
+
+func (m *MMClient) UsernamesInChannel(channelId string) []string { //nolint:golint
+	res, resp := m.Client.GetChannelMembers(channelId, 0, 50000, "")
+	if resp.Error != nil {
+		m.log.Errorf("UsernamesInChannel(%s) failed: %s", channelId, resp.Error)
+		return []string{}
+	}
+	allusers := m.GetUsers()
+	result := []string{}
+	for _, member := range *res {
+		result = append(result, allusers[member.UserId].Nickname)
+	}
+	return result
+}
+
+func (m *MMClient) UpdateStatus(userId string, status string) error { //nolint:golint
+	_, resp := m.Client.UpdateUserStatus(userId, &model.Status{Status: status})
+	if resp.Error != nil {
+		return resp.Error
+	}
+	return nil
+}
+
+func (m *MMClient) UpdateUser(userId string) { //nolint:golint
+	m.Lock()
+	defer m.Unlock()
+	res, resp := m.Client.GetUser(userId, "")
+	if resp.Error != nil {
+		return
+	}
+	m.Users[userId] = res
+}

matterhook/matterhook.go

@@ -6,23 +6,27 @@ import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
-	"github.com/gorilla/schema"
 	"io"
 	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
+	"time"
+
+	"github.com/gorilla/schema"
+	"github.com/nlopes/slack"
 )
 
 // OMessage for mattermost incoming webhook. (send to mattermost)
 type OMessage struct {
-	Channel     string      `json:"channel,omitempty"`
-	IconURL     string      `json:"icon_url,omitempty"`
-	IconEmoji   string      `json:"icon_emoji,omitempty"`
-	UserName    string      `json:"username,omitempty"`
-	Text        string      `json:"text"`
-	Attachments interface{} `json:"attachments,omitempty"`
-	Type        string      `json:"type,omitempty"`
+	Channel     string                 `json:"channel,omitempty"`
+	IconURL     string                 `json:"icon_url,omitempty"`
+	IconEmoji   string                 `json:"icon_emoji,omitempty"`
+	UserName    string                 `json:"username,omitempty"`
+	Text        string                 `json:"text"`
+	Attachments []slack.Attachment     `json:"attachments,omitempty"`
+	Type        string                 `json:"type,omitempty"`
+	Props       map[string]interface{} `json:"props"`
 }
 
 // IMessage for mattermost outgoing webhook. (received from mattermost)
@@ -37,16 +41,18 @@ type IMessage struct {
 	Timestamp   string `schema:"timestamp"`
 	UserID      string `schema:"user_id"`
 	UserName    string `schema:"user_name"`
-	PostId      string `schema:"post_id"`
+	PostId      string `schema:"post_id"` //nolint:golint
 	RawText     string `schema:"raw_text"`
-	ServiceId   string `schema:"service_id"`
+	ServiceId   string `schema:"service_id"` //nolint:golint
 	Text        string `schema:"text"`
 	TriggerWord string `schema:"trigger_word"`
+	FileIDs     string `schema:"file_ids"`
 }
 
 // Client for Mattermost.
 type Client struct {
-	Url        string // URL for incoming webhooks on mattermost.
+	// URL for incoming webhooks on mattermost.
+	Url        string // nolint:golint
 	In         chan IMessage
 	Out        chan OMessage
 	httpclient *http.Client
@@ -65,7 +71,7 @@ type Config struct {
 func New(url string, config Config) *Client {
 	c := &Client{Url: url, In: make(chan IMessage), Out: make(chan OMessage), Config: config}
 	tr := &http.Transport{
-		TLSClientConfig: &tls.Config{InsecureSkipVerify: config.InsecureSkipVerify},
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: config.InsecureSkipVerify}, //nolint:gosec
 	}
 	c.httpclient = &http.Client{Transport: tr}
 	if !c.DisableServer {
@@ -82,8 +88,14 @@ func New(url string, config Config) *Client {
 func (c *Client) StartServer() {
 	mux := http.NewServeMux()
 	mux.Handle("/", c)
+	srv := &http.Server{
+		ReadTimeout:  5 * time.Second,
+		WriteTimeout: 10 * time.Second,
+		Handler:      mux,
+		Addr:         c.BindAddress,
+	}
 	log.Printf("Listening on http://%v...\n", c.BindAddress)
-	if err := http.ListenAndServe(c.BindAddress, mux); err != nil {
+	if err := srv.ListenAndServe(); err != nil {
 		log.Fatal(err)
 	}
 }
@@ -127,12 +139,11 @@ func (c *Client) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 
 // Receive returns an incoming message from mattermost outgoing webhooks URL.
 func (c *Client) Receive() IMessage {
-	for {
-		select {
-		case msg := <-c.In:
-			return msg
-		}
+	var msg IMessage
+	for msg := range c.In {
+		return msg
 	}
+	return msg
 }
 
 // Send sends a msg to mattermost incoming webhooks URL.

migration.md

@@ -1,50 +0,0 @@
-# Breaking changes from 0.4 to 0.5 for matterbridge (webhooks version)
-## IRC section
-### Server
-Port removed, added to server
-```
-server="irc.freenode.net"
-port=6667
-```
-changed to
-```
-server="irc.freenode.net:6667"
-```
-### Channel
-Removed see Channels section below
-
-### UseSlackCircumfix=true
-Removed, can be done by using ```RemoteNickFormat="<{NICK}> "```
-
-## Mattermost section
-### BindAddress
-Port removed, added to BindAddress
-
-```
-BindAddress="0.0.0.0"
-port=9999
-```
-
-changed to
-
-```
-BindAddress="0.0.0.0:9999"
-```
-
-### Token
-Removed
-
-## Channels section
-```
-[Token "outgoingwebhooktoken1"] 
-IRCChannel="#off-topic"
-MMChannel="off-topic"
-```
-
-changed to
-
-```
-[Channel "channelnameofchoice"] 
-IRC="#off-topic"
-Mattermost="off-topic"
-```

vendor/github.com/42wim/go-gitter/.gitignore

@@ -0,0 +1,3 @@
+.idea
+/test
+app.yaml

vendor/github.com/42wim/go-gitter/README.md

@@ -0,0 +1,154 @@
+# gitter
+Gitter API in Go
+https://developer.gitter.im
+
+#### Install
+
+`go get github.com/sromku/go-gitter`
+
+- [Initialize](#initialize)
+- [Users](#users)
+- [Rooms](#rooms)
+- [Messages](#messages)
+- [Stream](#stream)
+- [Faye (Experimental)](#faye-experimental)
+- [Debug](#debug)
+- [App Engine](#app-engine)
+
+##### Initialize
+``` Go
+api := gitter.New("YOUR_ACCESS_TOKEN")
+```
+
+##### Users
+
+- Get current user
+
+	``` Go
+	user, err := api.GetUser()
+	```
+
+##### Rooms
+
+- Get all rooms
+	``` Go
+	rooms, err := api.GetRooms()
+	```
+
+- Get room by id
+	``` Go
+	room, err := api.GetRoom("roomID")
+	```
+
+- Get rooms of some user
+	``` Go
+	rooms, err := api.GetRooms("userID")
+	```
+
+- Join room
+	``` Go
+	room, err := api.JoinRoom("roomID", "userID")
+	```
+	
+- Leave room
+	``` Go
+	room, err := api.LeaveRoom("roomID", "userID")
+	```
+
+- Get room id
+	``` Go
+	id, err := api.GetRoomId("room/uri")
+	```
+
+- Search gitter rooms
+	``` Go
+	rooms, err := api.SearchRooms("search/string")
+	```
+##### Messages
+
+- Get messages of room
+	``` Go
+	messages, err := api.GetMessages("roomID", nil)
+	```
+
+- Get one message
+	``` Go
+	message, err := api.GetMessage("roomID", "messageID")
+	```
+
+- Send message
+	``` Go
+	err := api.SendMessage("roomID", "free chat text")
+	```
+
+##### Stream
+
+Create stream to the room and start listening to incoming messages
+
+``` Go
+stream := api.Stream(room.Id)
+go api.Listen(stream)
+
+for {
+    event := <-stream.Event
+    switch ev := event.Data.(type) {
+    case *gitter.MessageReceived:
+        fmt.Println(ev.Message.From.Username + ": " + ev.Message.Text)
+    case *gitter.GitterConnectionClosed:
+        // connection was closed
+    }
+}
+```
+
+Close stream connection
+
+``` Go
+stream.Close()
+```
+
+##### Faye (Experimental)
+
+``` Go
+faye := api.Faye(room.ID)
+go faye.Listen()
+
+for {
+    event := <-faye.Event
+    switch ev := event.Data.(type) {
+    case *gitter.MessageReceived:
+        fmt.Println(ev.Message.From.Username + ": " + ev.Message.Text)
+    case *gitter.GitterConnectionClosed: //this one is never called in Faye
+        // connection was closed
+    }
+}
+```
+
+##### Debug
+
+You can print the internal errors by enabling debug to true
+
+``` Go
+api.SetDebug(true, nil)
+```
+
+You can also define your own `io.Writer` in case you want to persist the logs somewhere.
+For example keeping the errors on file
+
+``` Go
+logFile, err := os.Create("gitter.log")
+api.SetDebug(true, logFile)
+```
+
+##### App Engine
+
+Initialize app engine client and continue as usual
+
+``` Go
+c := appengine.NewContext(r)
+client := urlfetch.Client(c)
+
+api := gitter.New("YOUR_ACCESS_TOKEN")
+api.SetClient(client)
+```
+
+[Documentation](https://godoc.org/github.com/sromku/go-gitter)

vendor/github.com/42wim/go-gitter/gitter.go

@@ -125,6 +125,23 @@ func (gitter *Gitter) GetRooms() ([]Room, error) {
 	return rooms, nil
 }
 
+// GetUsersInRoom returns the users in the room with the passed id
+func (gitter *Gitter) GetUsersInRoom(roomID string) ([]User, error) {
+	var users []User
+	response, err := gitter.get(gitter.config.apiBaseURL + "rooms/" + roomID + "/users")
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	err = json.Unmarshal(response, &users)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+	return users, nil
+}
+
 // GetRoom returns a room with the passed id
 func (gitter *Gitter) GetRoom(roomID string) (*Room, error) {
 
@@ -188,11 +205,71 @@ func (gitter *Gitter) GetMessage(roomID, messageID string) (*Message, error) {
 }
 
 // SendMessage sends a message to a room
-func (gitter *Gitter) SendMessage(roomID, text string) error {
+func (gitter *Gitter) SendMessage(roomID, text string) (*Message, error) {
 
 	message := Message{Text: text}
 	body, _ := json.Marshal(message)
-	err := gitter.post(gitter.config.apiBaseURL+"rooms/"+roomID+"/chatMessages", body)
+	response, err := gitter.post(gitter.config.apiBaseURL+"rooms/"+roomID+"/chatMessages", body)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	err = json.Unmarshal(response, &message)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return &message, nil
+}
+
+// UpdateMessage updates a message in a room
+func (gitter *Gitter) UpdateMessage(roomID, msgID, text string) (*Message, error) {
+
+	message := Message{Text: text}
+	body, _ := json.Marshal(message)
+	response, err := gitter.put(gitter.config.apiBaseURL+"rooms/"+roomID+"/chatMessages/"+msgID, body)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	err = json.Unmarshal(response, &message)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return &message, nil
+}
+
+// JoinRoom joins a room
+func (gitter *Gitter) JoinRoom(roomID, userID string) (*Room, error) {
+
+	message := Room{ID: roomID}
+	body, _ := json.Marshal(message)
+	response, err := gitter.post(gitter.config.apiBaseURL+"user/"+userID+"/rooms", body)
+
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	var room Room
+	err = json.Unmarshal(response, &room)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return &room, nil
+}
+
+// LeaveRoom removes a user from the room
+func (gitter *Gitter) LeaveRoom(roomID, userID string) error {
+
+	_, err := gitter.delete(gitter.config.apiBaseURL + "rooms/" + roomID + "/users/" + userID)
 	if err != nil {
 		gitter.log(err)
 		return err
@@ -201,40 +278,51 @@ func (gitter *Gitter) SendMessage(roomID, text string) error {
 	return nil
 }
 
-// JoinRoom joins a room
-func (gitter *Gitter) JoinRoom(uri string) (*Room, error) {
-
-	message := Room{URI: uri}
-	body, _ := json.Marshal(message)
-	err := gitter.post(apiBaseURL+"rooms", body)
-	if err != nil {
-		gitter.log(err)
-		return nil, err
-	}
-
-	rooms, err := gitter.GetRooms()
-	if err != nil {
-		gitter.log(err)
-		return nil, err
-	}
-
-	for _, room := range rooms {
-		if room.URI == uri {
-			return &room, nil
-		}
-	}
-
-	err = APIError{What: fmt.Sprintf("Joined room (%v) not found in list of rooms", uri)}
-	gitter.log(err)
-	return nil, err
-}
-
 // SetDebug traces errors if it's set to true.
 func (gitter *Gitter) SetDebug(debug bool, logWriter io.Writer) {
 	gitter.debug = debug
 	gitter.logWriter = logWriter
 }
 
+// SearchRooms queries the Rooms resources of gitter API
+func (gitter *Gitter) SearchRooms(room string) ([]Room, error) {
+
+	var rooms struct {
+		Results []Room `json:"results"`
+	}
+
+	response, err := gitter.get(gitter.config.apiBaseURL + "rooms?q=" + room)
+
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	err = json.Unmarshal(response, &rooms)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+	return rooms.Results, nil
+}
+
+// GetRoomId returns the room ID of a given URI
+func (gitter *Gitter) GetRoomId(uri string) (string, error) {
+
+	rooms, err := gitter.SearchRooms(uri)
+	if err != nil {
+		gitter.log(err)
+		return "", err
+	}
+
+	for _, element := range rooms {
+		if element.URI == uri {
+			return element.ID, nil
+		}
+	}
+	return "", APIError{What: "Room not found."}
+}
+
 // Pagination params
 type Pagination struct {
 
@@ -319,11 +407,11 @@ func (gitter *Gitter) get(url string) ([]byte, error) {
 	return body, nil
 }
 
-func (gitter *Gitter) post(url string, body []byte) error {
+func (gitter *Gitter) post(url string, body []byte) ([]byte, error) {
 	r, err := http.NewRequest("POST", url, bytes.NewBuffer(body))
 	if err != nil {
 		gitter.log(err)
-		return err
+		return nil, err
 	}
 
 	r.Header.Set("Content-Type", "application/json")
@@ -333,17 +421,89 @@ func (gitter *Gitter) post(url string, body []byte) error {
 	resp, err := gitter.config.client.Do(r)
 	if err != nil {
 		gitter.log(err)
-		return err
+		return nil, err
 	}
 	defer resp.Body.Close()
 
 	if resp.StatusCode != http.StatusOK {
 		err = APIError{What: fmt.Sprintf("Status code: %v", resp.StatusCode)}
 		gitter.log(err)
-		return err
+		return nil, err
 	}
 
-	return nil
+	result, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (gitter *Gitter) put(url string, body []byte) ([]byte, error) {
+	r, err := http.NewRequest("PUT", url, bytes.NewBuffer(body))
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	r.Header.Set("Content-Type", "application/json")
+	r.Header.Set("Accept", "application/json")
+	r.Header.Set("Authorization", "Bearer "+gitter.config.token)
+
+	resp, err := gitter.config.client.Do(r)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		err = APIError{What: fmt.Sprintf("Status code: %v", resp.StatusCode)}
+		gitter.log(err)
+		return nil, err
+	}
+
+	result, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return result, nil
+}
+
+func (gitter *Gitter) delete(url string) ([]byte, error) {
+	r, err := http.NewRequest("delete", url, nil)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	r.Header.Set("Content-Type", "application/json")
+	r.Header.Set("Accept", "application/json")
+	r.Header.Set("Authorization", "Bearer "+gitter.config.token)
+
+	resp, err := gitter.config.client.Do(r)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != http.StatusOK {
+		err = APIError{What: fmt.Sprintf("Status code: %v", resp.StatusCode)}
+		gitter.log(err)
+		return nil, err
+	}
+
+	result, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		gitter.log(err)
+		return nil, err
+	}
+
+	return result, nil
 }
 
 func (gitter *Gitter) log(a interface{}) {

vendor/github.com/42wim/go-gitter/stream.go

@@ -47,16 +47,21 @@ Loop:
 			}
 			break Loop
 		}
-
+		
 		resp := stream.getResponse()
 		if resp.StatusCode != 200 {
 			gitter.log(fmt.Sprintf("Unexpected response code %v", resp.StatusCode))
 			continue
 		}
-
+		
 		//"The JSON stream returns messages as JSON objects that are delimited by carriage return (\r)" <- Not true crap it's (\n) only
 		reader = bufio.NewReader(resp.Body)
 		line, err := reader.ReadBytes('\n')
+		if err != nil {
+			gitter.log("ReadBytes error: " + err.Error())
+			stream.connect()
+			continue
+		}
 
 		//Check if the line only consists of whitespace
 		onlyWhitespace := true
@@ -77,10 +82,6 @@ Loop:
 		} else if stream.isClosed() {
 			gitter.log("Stream closed")
 			continue
-		} else if err != nil {
-			gitter.log("ReadBytes error: " + err.Error())
-			stream.connect()
-			continue
 		}
 
 		// unmarshal the streamed data
@@ -111,6 +112,7 @@ type Stream struct {
 
 func (stream *Stream) destroy() {
 	close(stream.Event)
+	stream.streamConnection.currentRetries = 0
 }
 
 type Event struct {
@@ -134,10 +136,11 @@ func (stream *Stream) connect() {
 	}
 
 	res, err := stream.gitter.getResponse(stream.url, stream)
-	if stream.streamConnection.canceled {
-		// do nothing
-	} else if err != nil || res.StatusCode != 200 {
-		stream.gitter.log("Failed to get response, trying reconnect ")
+	if err != nil || res.StatusCode != 200 {
+		stream.gitter.log("Failed to get response, trying reconnect")
+		if res != nil {
+			stream.gitter.log(fmt.Sprintf("Status code: %v", res.StatusCode))
+		}
 		stream.gitter.log(err)
 
 		// sleep and wait
@@ -160,9 +163,6 @@ type streamConnection struct {
 	// connection was closed
 	closed bool
 
-	// canceled
-	canceled bool
-
 	// wait time till next try
 	wait time.Duration
 
@@ -191,13 +191,10 @@ func (stream *Stream) Close() {
 		stream.gitter.log("Stream connection close request")
 		switch transport := stream.gitter.config.client.Transport.(type) {
 		case *httpclient.Transport:
-			stream.streamConnection.canceled = true
 			transport.CancelRequest(conn.request)
 		default:
 		}
-
 	}
-	conn.currentRetries = 0
 }
 
 func (stream *Stream) isClosed() bool {

vendor/github.com/42wim/matterbridge-plus/bridge/bridge.go

@@ -1,434 +0,0 @@
-package bridge
-
-import (
-	"crypto/tls"
-	"github.com/42wim/matterbridge-plus/matterclient"
-	"github.com/42wim/matterbridge/matterhook"
-	log "github.com/Sirupsen/logrus"
-	"github.com/peterhellberg/giphy"
-	ircm "github.com/sorcix/irc"
-	"github.com/thoj/go-ircevent"
-	"regexp"
-	"sort"
-	"strconv"
-	"strings"
-	"time"
-)
-
-//type Bridge struct {
-type MMhook struct {
-	mh *matterhook.Client
-}
-
-type MMapi struct {
-	mc            *matterclient.MMClient
-	mmMap         map[string]string
-	mmIgnoreNicks []string
-}
-
-type MMirc struct {
-	i              *irc.Connection
-	ircNick        string
-	ircMap         map[string]string
-	names          map[string][]string
-	ircIgnoreNicks []string
-}
-
-type MMMessage struct {
-	Text     string
-	Channel  string
-	Username string
-}
-
-type Bridge struct {
-	MMhook
-	MMapi
-	MMirc
-	*Config
-	kind string
-}
-
-type FancyLog struct {
-	irc *log.Entry
-	mm  *log.Entry
-}
-
-var flog FancyLog
-
-const Legacy = "legacy"
-
-func initFLog() {
-	flog.irc = log.WithFields(log.Fields{"module": "irc"})
-	flog.mm = log.WithFields(log.Fields{"module": "mattermost"})
-}
-
-func NewBridge(name string, config *Config, kind string) *Bridge {
-	initFLog()
-	b := &Bridge{}
-	b.Config = config
-	b.kind = kind
-	b.ircNick = b.Config.IRC.Nick
-	b.ircMap = make(map[string]string)
-	b.MMirc.names = make(map[string][]string)
-	b.ircIgnoreNicks = strings.Fields(b.Config.IRC.IgnoreNicks)
-	b.mmIgnoreNicks = strings.Fields(b.Config.Mattermost.IgnoreNicks)
-	if kind == Legacy {
-		if len(b.Config.Token) > 0 {
-			for _, val := range b.Config.Token {
-				b.ircMap[val.IRCChannel] = val.MMChannel
-			}
-		}
-
-		b.mh = matterhook.New(b.Config.Mattermost.URL,
-			matterhook.Config{Port: b.Config.Mattermost.Port, Token: b.Config.Mattermost.Token,
-				InsecureSkipVerify: b.Config.Mattermost.SkipTLSVerify,
-				BindAddress:        b.Config.Mattermost.BindAddress})
-	} else {
-		b.mmMap = make(map[string]string)
-		if len(b.Config.Channel) > 0 {
-			for _, val := range b.Config.Channel {
-				b.ircMap[val.IRC] = val.Mattermost
-				b.mmMap[val.Mattermost] = val.IRC
-			}
-		}
-		b.mc = matterclient.New(b.Config.Mattermost.Login, b.Config.Mattermost.Password,
-			b.Config.Mattermost.Team, b.Config.Mattermost.Server)
-		b.mc.SkipTLSVerify = b.Config.Mattermost.SkipTLSVerify
-		b.mc.NoTLS = b.Config.Mattermost.NoTLS
-		flog.mm.Infof("Trying login %s (team: %s) on %s", b.Config.Mattermost.Login, b.Config.Mattermost.Team, b.Config.Mattermost.Server)
-		err := b.mc.Login()
-		if err != nil {
-			flog.mm.Fatal("Can not connect", err)
-		}
-		flog.mm.Info("Login ok")
-		b.mc.JoinChannel(b.Config.Mattermost.Channel)
-		if len(b.Config.Channel) > 0 {
-			for _, val := range b.Config.Channel {
-				b.mc.JoinChannel(val.Mattermost)
-			}
-		}
-		go b.mc.WsReceiver()
-	}
-	flog.irc.Info("Trying IRC connection")
-	b.i = b.createIRC(name)
-	flog.irc.Info("Connection succeeded")
-	go b.handleMatter()
-	return b
-}
-
-func (b *Bridge) createIRC(name string) *irc.Connection {
-	i := irc.IRC(b.Config.IRC.Nick, b.Config.IRC.Nick)
-	i.UseTLS = b.Config.IRC.UseTLS
-	i.TLSConfig = &tls.Config{InsecureSkipVerify: b.Config.IRC.SkipTLSVerify}
-	if b.Config.IRC.Password != "" {
-		i.Password = b.Config.IRC.Password
-	}
-	i.AddCallback(ircm.RPL_WELCOME, b.handleNewConnection)
-	i.Connect(b.Config.IRC.Server + ":" + strconv.Itoa(b.Config.IRC.Port))
-	return i
-}
-
-func (b *Bridge) handleNewConnection(event *irc.Event) {
-	flog.irc.Info("Registering callbacks")
-	i := b.i
-	b.ircNick = event.Arguments[0]
-	i.AddCallback("PRIVMSG", b.handlePrivMsg)
-	i.AddCallback("CTCP_ACTION", b.handlePrivMsg)
-	i.AddCallback(ircm.RPL_ENDOFNAMES, b.endNames)
-	i.AddCallback(ircm.RPL_NAMREPLY, b.storeNames)
-	i.AddCallback(ircm.RPL_TOPICWHOTIME, b.handleTopicWhoTime)
-	i.AddCallback(ircm.NOTICE, b.handleNotice)
-	i.AddCallback(ircm.RPL_MYINFO, func(e *irc.Event) { flog.irc.Infof("%s: %s", e.Code, strings.Join(e.Arguments[1:], " ")) })
-	i.AddCallback("PING", func(e *irc.Event) {
-		i.SendRaw("PONG :" + e.Message())
-		flog.irc.Debugf("PING/PONG")
-	})
-	if b.Config.Mattermost.ShowJoinPart {
-		i.AddCallback("JOIN", b.handleJoinPart)
-		i.AddCallback("PART", b.handleJoinPart)
-	}
-	i.AddCallback("*", b.handleOther)
-	b.setupChannels()
-}
-
-func (b *Bridge) setupChannels() {
-	i := b.i
-	if b.Config.IRC.Channel != "" {
-		flog.irc.Infof("Joining %s as %s", b.Config.IRC.Channel, b.ircNick)
-		i.Join(b.Config.IRC.Channel)
-	}
-	if b.kind == Legacy {
-		for _, val := range b.Config.Token {
-			flog.irc.Infof("Joining %s as %s", val.IRCChannel, b.ircNick)
-			i.Join(val.IRCChannel)
-		}
-	} else {
-		for _, val := range b.Config.Channel {
-			flog.irc.Infof("Joining %s as %s", val.IRC, b.ircNick)
-			i.Join(val.IRC)
-		}
-	}
-}
-
-func (b *Bridge) handleIrcBotCommand(event *irc.Event) bool {
-	parts := strings.Fields(event.Message())
-	exp, _ := regexp.Compile("[:,]+$")
-	channel := event.Arguments[0]
-	command := ""
-	if len(parts) == 2 {
-		command = parts[1]
-	}
-	if exp.ReplaceAllString(parts[0], "") == b.ircNick {
-		switch command {
-		case "users":
-			usernames := b.mc.UsernamesInChannel(b.getMMChannel(channel))
-			sort.Strings(usernames)
-			b.i.Privmsg(channel, "Users on Mattermost: "+strings.Join(usernames, ", "))
-		default:
-			b.i.Privmsg(channel, "Valid commands are: [users, help]")
-		}
-		return true
-	}
-	return false
-}
-
-func (b *Bridge) ircNickFormat(nick string) string {
-	if nick == b.ircNick {
-		return nick
-	}
-	if b.Config.Mattermost.RemoteNickFormat == nil {
-		return "irc-" + nick
-	}
-	return strings.Replace(*b.Config.Mattermost.RemoteNickFormat, "{NICK}", nick, -1)
-}
-
-func (b *Bridge) handlePrivMsg(event *irc.Event) {
-	if b.ignoreMessage(event.Nick, event.Message(), "irc") {
-		return
-	}
-	if b.handleIrcBotCommand(event) {
-		return
-	}
-	msg := ""
-	if event.Code == "CTCP_ACTION" {
-		msg = event.Nick + " "
-	}
-	msg += event.Message()
-	b.Send(b.ircNickFormat(event.Nick), msg, b.getMMChannel(event.Arguments[0]))
-}
-
-func (b *Bridge) handleJoinPart(event *irc.Event) {
-	b.Send(b.ircNick, b.ircNickFormat(event.Nick)+" "+strings.ToLower(event.Code)+"s "+event.Message(), b.getMMChannel(event.Arguments[0]))
-}
-
-func (b *Bridge) handleNotice(event *irc.Event) {
-	if strings.Contains(event.Message(), "This nickname is registered") {
-		b.i.Privmsg(b.Config.IRC.NickServNick, "IDENTIFY "+b.Config.IRC.NickServPassword)
-	}
-}
-
-func (b *Bridge) nicksPerRow() int {
-	if b.Config.Mattermost.NicksPerRow < 1 {
-		return 4
-	}
-	return b.Config.Mattermost.NicksPerRow
-}
-
-func (b *Bridge) formatnicks(nicks []string, continued bool) string {
-	switch b.Config.Mattermost.NickFormatter {
-	case "table":
-		return tableformatter(nicks, b.nicksPerRow(), continued)
-	default:
-		return plainformatter(nicks, b.nicksPerRow())
-	}
-}
-
-func (b *Bridge) storeNames(event *irc.Event) {
-	channel := event.Arguments[2]
-	b.MMirc.names[channel] = append(
-		b.MMirc.names[channel],
-		strings.Split(strings.TrimSpace(event.Message()), " ")...)
-}
-
-func (b *Bridge) endNames(event *irc.Event) {
-	channel := event.Arguments[1]
-	sort.Strings(b.MMirc.names[channel])
-	maxNamesPerPost := (300 / b.nicksPerRow()) * b.nicksPerRow()
-	continued := false
-	for len(b.MMirc.names[channel]) > maxNamesPerPost {
-		b.Send(
-			b.ircNick,
-			b.formatnicks(b.MMirc.names[channel][0:maxNamesPerPost], continued),
-			b.getMMChannel(channel))
-		b.MMirc.names[channel] = b.MMirc.names[channel][maxNamesPerPost:]
-		continued = true
-	}
-	b.Send(b.ircNick, b.formatnicks(b.MMirc.names[channel], continued), b.getMMChannel(channel))
-	b.MMirc.names[channel] = nil
-}
-
-func (b *Bridge) handleTopicWhoTime(event *irc.Event) {
-	parts := strings.Split(event.Arguments[2], "!")
-	t, err := strconv.ParseInt(event.Arguments[3], 10, 64)
-	if err != nil {
-		flog.irc.Errorf("Invalid time stamp: %s", event.Arguments[3])
-	}
-	user := parts[0]
-	if len(parts) > 1 {
-		user += " [" + parts[1] + "]"
-	}
-	flog.irc.Infof("%s: Topic set by %s [%s]", event.Code, user, time.Unix(t, 0))
-}
-
-func (b *Bridge) handleOther(event *irc.Event) {
-	flog.irc.Debugf("%#v", event)
-}
-
-func (b *Bridge) Send(nick string, message string, channel string) error {
-	return b.SendType(nick, message, channel, "")
-}
-
-func (b *Bridge) SendType(nick string, message string, channel string, mtype string) error {
-	if b.Config.Mattermost.PrefixMessagesWithNick {
-		if IsMarkup(message) {
-			message = nick + "\n\n" + message
-		} else {
-			message = nick + " " + message
-		}
-	}
-	if b.kind == Legacy {
-		matterMessage := matterhook.OMessage{IconURL: b.Config.Mattermost.IconURL}
-		matterMessage.Channel = channel
-		matterMessage.UserName = nick
-		matterMessage.Type = mtype
-		matterMessage.Text = message
-		err := b.mh.Send(matterMessage)
-		if err != nil {
-			flog.mm.Info(err)
-			return err
-		}
-		return nil
-	}
-	flog.mm.Debug("->mattermost channel: ", channel, " ", message)
-	b.mc.PostMessage(channel, message)
-	return nil
-}
-
-func (b *Bridge) handleMatterHook(mchan chan *MMMessage) {
-	for {
-		message := b.mh.Receive()
-		m := &MMMessage{}
-		m.Username = message.UserName
-		m.Text = message.Text
-		m.Channel = message.Token
-		mchan <- m
-	}
-}
-
-func (b *Bridge) handleMatterClient(mchan chan *MMMessage) {
-	for message := range b.mc.MessageChan {
-		// do not post our own messages back to irc
-		if message.Raw.Action == "posted" && b.mc.User.Username != message.Username {
-			m := &MMMessage{}
-			m.Username = message.Username
-			m.Channel = message.Channel
-			m.Text = message.Text
-			flog.mm.Debugf("<-mattermost channel: %s %#v %#v", message.Channel, message.Post, message.Raw)
-			mchan <- m
-		}
-	}
-}
-
-func (b *Bridge) handleMatter() {
-	flog.mm.Infof("Choosing Mattermost connection type %s", b.kind)
-	mchan := make(chan *MMMessage)
-	if b.kind == Legacy {
-		go b.handleMatterHook(mchan)
-	} else {
-		go b.handleMatterClient(mchan)
-	}
-	flog.mm.Info("Start listening for Mattermost messages")
-	for message := range mchan {
-		var username string
-		if b.ignoreMessage(message.Username, message.Text, "mattermost") {
-			continue
-		}
-		username = message.Username + ": "
-		if b.Config.IRC.RemoteNickFormat != "" {
-			username = strings.Replace(b.Config.IRC.RemoteNickFormat, "{NICK}", message.Username, -1)
-		} else if b.Config.IRC.UseSlackCircumfix {
-			username = "<" + message.Username + "> "
-		}
-		cmds := strings.Fields(message.Text)
-		// empty message
-		if len(cmds) == 0 {
-			continue
-		}
-		cmd := cmds[0]
-		switch cmd {
-		case "!users":
-			flog.mm.Info("Received !users from ", message.Username)
-			b.i.SendRaw("NAMES " + b.getIRCChannel(message.Channel))
-			continue
-		case "!gif":
-			message.Text = b.giphyRandom(strings.Fields(strings.Replace(message.Text, "!gif ", "", 1)))
-			b.Send(b.ircNick, message.Text, b.getIRCChannel(message.Channel))
-			continue
-		}
-		texts := strings.Split(message.Text, "\n")
-		for _, text := range texts {
-			flog.mm.Debug("Sending message from " + message.Username + " to " + message.Channel)
-			b.i.Privmsg(b.getIRCChannel(message.Channel), username+text)
-		}
-	}
-}
-
-func (b *Bridge) giphyRandom(query []string) string {
-	g := giphy.DefaultClient
-	if b.Config.General.GiphyAPIKey != "" {
-		g.APIKey = b.Config.General.GiphyAPIKey
-	}
-	res, err := g.Random(query)
-	if err != nil {
-		return "error"
-	}
-	return res.Data.FixedHeightDownsampledURL
-}
-
-func (b *Bridge) getMMChannel(ircChannel string) string {
-	mmchannel, ok := b.ircMap[ircChannel]
-	if !ok {
-		mmchannel = b.Config.Mattermost.Channel
-	}
-	return mmchannel
-}
-
-func (b *Bridge) getIRCChannel(channel string) string {
-	if b.kind == Legacy {
-		ircchannel := b.Config.IRC.Channel
-		_, ok := b.Config.Token[channel]
-		if ok {
-			ircchannel = b.Config.Token[channel].IRCChannel
-		}
-		return ircchannel
-	}
-	ircchannel, ok := b.mmMap[channel]
-	if !ok {
-		ircchannel = b.Config.IRC.Channel
-	}
-	return ircchannel
-}
-
-func (b *Bridge) ignoreMessage(nick string, message string, protocol string) bool {
-	var ignoreNicks = b.mmIgnoreNicks
-	if protocol == "irc" {
-		ignoreNicks = b.ircIgnoreNicks
-	}
-	// should we discard messages ?
-	for _, entry := range ignoreNicks {
-		if nick == entry {
-			return true
-		}
-	}
-	return false
-}

vendor/github.com/42wim/matterbridge-plus/bridge/config.go

@@ -1,68 +0,0 @@
-package bridge
-
-import (
-	"gopkg.in/gcfg.v1"
-	"io/ioutil"
-	"log"
-)
-
-type Config struct {
-	IRC struct {
-		UseTLS            bool
-		SkipTLSVerify     bool
-		Server            string
-		Port              int
-		Nick              string
-		Password          string
-		Channel           string
-		UseSlackCircumfix bool
-		NickServNick      string
-		NickServPassword  string
-		RemoteNickFormat  string
-		IgnoreNicks       string
-	}
-	Mattermost struct {
-		URL                    string
-		Port                   int
-		ShowJoinPart           bool
-		Token                  string
-		IconURL                string
-		SkipTLSVerify          bool
-		BindAddress            string
-		Channel                string
-		PrefixMessagesWithNick bool
-		NicksPerRow            int
-		NickFormatter          string
-		Server                 string
-		Team                   string
-		Login                  string
-		Password               string
-		RemoteNickFormat       *string
-		IgnoreNicks            string
-		NoTLS                  bool
-	}
-	Token map[string]*struct {
-		IRCChannel string
-		MMChannel  string
-	}
-	Channel map[string]*struct {
-		IRC        string
-		Mattermost string
-	}
-	General struct {
-		GiphyAPIKey string
-	}
-}
-
-func NewConfig(cfgfile string) *Config {
-	var cfg Config
-	content, err := ioutil.ReadFile(cfgfile)
-	if err != nil {
-		log.Fatal(err)
-	}
-	err = gcfg.ReadStringInto(&cfg, string(content))
-	if err != nil {
-		log.Fatal("Failed to parse "+cfgfile+":", err)
-	}
-	return &cfg
-}

vendor/github.com/42wim/matterbridge-plus/bridge/helper.go

@@ -1,59 +0,0 @@
-package bridge
-
-import (
-	"strings"
-)
-
-func tableformatter(nicks []string, nicksPerRow int, continued bool) string {
-	result := "|IRC users"
-	if continued {
-		result = "|(continued)"
-	}
-	for i := 0; i < 2; i++ {
-		for j := 1; j <= nicksPerRow && j <= len(nicks); j++ {
-			if i == 0 {
-				result += "|"
-			} else {
-				result += ":-|"
-			}
-		}
-		result += "\r\n|"
-	}
-	result += nicks[0] + "|"
-	for i := 1; i < len(nicks); i++ {
-		if i%nicksPerRow == 0 {
-			result += "\r\n|" + nicks[i] + "|"
-		} else {
-			result += nicks[i] + "|"
-		}
-	}
-	return result
-}
-
-func plainformatter(nicks []string, nicksPerRow int) string {
-	return strings.Join(nicks, ", ") + " currently on IRC"
-}
-
-func IsMarkup(message string) bool {
-	switch message[0] {
-	case '|':
-		fallthrough
-	case '#':
-		fallthrough
-	case '_':
-		fallthrough
-	case '*':
-		fallthrough
-	case '~':
-		fallthrough
-	case '-':
-		fallthrough
-	case ':':
-		fallthrough
-	case '>':
-		fallthrough
-	case '=':
-		return true
-	}
-	return false
-}

vendor/github.com/42wim/matterbridge-plus/matterclient/matterclient.go

@@ -1,441 +0,0 @@
-package matterclient
-
-import (
-	"crypto/tls"
-	"errors"
-	log "github.com/Sirupsen/logrus"
-	"net/http"
-	"net/http/cookiejar"
-	"net/url"
-	"strings"
-	"time"
-
-	"github.com/gorilla/websocket"
-	"github.com/jpillora/backoff"
-	"github.com/mattermost/platform/model"
-)
-
-type Credentials struct {
-	Login         string
-	Team          string
-	Pass          string
-	Server        string
-	NoTLS         bool
-	SkipTLSVerify bool
-}
-
-type Message struct {
-	Raw      *model.Message
-	Post     *model.Post
-	Team     string
-	Channel  string
-	Username string
-	Text     string
-}
-
-type MMClient struct {
-	*Credentials
-	Client       *model.Client
-	WsClient     *websocket.Conn
-	WsQuit       bool
-	WsAway       bool
-	Channels     *model.ChannelList
-	MoreChannels *model.ChannelList
-	User         *model.User
-	Users        map[string]*model.User
-	MessageChan  chan *Message
-	Team         *model.Team
-	log          *log.Entry
-}
-
-func New(login, pass, team, server string) *MMClient {
-	cred := &Credentials{Login: login, Pass: pass, Team: team, Server: server}
-	mmclient := &MMClient{Credentials: cred, MessageChan: make(chan *Message, 100)}
-	mmclient.log = log.WithFields(log.Fields{"module": "matterclient"})
-	log.SetFormatter(&log.TextFormatter{FullTimestamp: true})
-	return mmclient
-}
-
-func (m *MMClient) SetLogLevel(level string) {
-	l, err := log.ParseLevel(level)
-	if err != nil {
-		log.SetLevel(log.InfoLevel)
-		return
-	}
-	log.SetLevel(l)
-}
-
-func (m *MMClient) Login() error {
-	if m.WsQuit {
-		return nil
-	}
-	b := &backoff.Backoff{
-		Min:    time.Second,
-		Max:    5 * time.Minute,
-		Jitter: true,
-	}
-	uriScheme := "https://"
-	wsScheme := "wss://"
-	if m.NoTLS {
-		uriScheme = "http://"
-		wsScheme = "ws://"
-	}
-	// login to mattermost
-	m.Client = model.NewClient(uriScheme + m.Credentials.Server)
-	m.Client.HttpClient.Transport = &http.Transport{TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}}
-	var myinfo *model.Result
-	var appErr *model.AppError
-	var logmsg = "trying login"
-	for {
-		m.log.Debugf("%s %s %s %s", logmsg, m.Credentials.Team, m.Credentials.Login, m.Credentials.Server)
-		if strings.Contains(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN) {
-			m.log.Debugf(logmsg+" with ", model.SESSION_COOKIE_TOKEN)
-			token := strings.Split(m.Credentials.Pass, model.SESSION_COOKIE_TOKEN+"=")
-			m.Client.HttpClient.Jar = m.createCookieJar(token[1])
-			m.Client.MockSession(token[1])
-			myinfo, appErr = m.Client.GetMe("")
-			if myinfo.Data.(*model.User) == nil {
-				m.log.Errorf("LOGIN TOKEN: %s is invalid", m.Credentials.Pass)
-				return errors.New("invalid " + model.SESSION_COOKIE_TOKEN)
-			}
-		} else {
-			myinfo, appErr = m.Client.Login(m.Credentials.Login, m.Credentials.Pass)
-		}
-		if appErr != nil {
-			d := b.Duration()
-			m.log.Debug(appErr.DetailedError)
-			if !strings.Contains(appErr.DetailedError, "connection refused") &&
-				!strings.Contains(appErr.DetailedError, "invalid character") {
-				if appErr.Message == "" {
-					return errors.New(appErr.DetailedError)
-				}
-				return errors.New(appErr.Message)
-			}
-			m.log.Debugf("LOGIN: %s, reconnecting in %s", appErr, d)
-			time.Sleep(d)
-			logmsg = "retrying login"
-			continue
-		}
-		break
-	}
-	// reset timer
-	b.Reset()
-
-	initLoad, _ := m.Client.GetInitialLoad()
-	initData := initLoad.Data.(*model.InitialLoad)
-	m.User = initData.User
-	for _, v := range initData.Teams {
-		m.log.Debugf("trying %s (id: %s)", v.Name, v.Id)
-		if v.Name == m.Credentials.Team {
-			m.Client.SetTeamId(v.Id)
-			m.Team = v
-			m.log.Debugf("GetallTeamListings: found id %s for team %s", v.Id, v.Name)
-			break
-		}
-	}
-	if m.Team == nil {
-		return errors.New("team not found")
-	}
-
-	// setup websocket connection
-	wsurl := wsScheme + m.Credentials.Server + "/api/v3/users/websocket"
-	header := http.Header{}
-	header.Set(model.HEADER_AUTH, "BEARER "+m.Client.AuthToken)
-
-	m.log.Debug("WsClient: making connection")
-	var err error
-	for {
-		wsDialer := &websocket.Dialer{Proxy: http.ProxyFromEnvironment, TLSClientConfig: &tls.Config{InsecureSkipVerify: m.SkipTLSVerify}}
-		m.WsClient, _, err = wsDialer.Dial(wsurl, header)
-		if err != nil {
-			d := b.Duration()
-			m.log.Debugf("WSS: %s, reconnecting in %s", err, d)
-			time.Sleep(d)
-			continue
-		}
-		break
-	}
-	b.Reset()
-
-	// populating users
-	m.UpdateUsers()
-
-	// populating channels
-	m.UpdateChannels()
-
-	return nil
-}
-
-func (m *MMClient) WsReceiver() {
-	var rmsg model.Message
-	for {
-		if m.WsQuit {
-			m.log.Debug("exiting WsReceiver")
-			return
-		}
-		if err := m.WsClient.ReadJSON(&rmsg); err != nil {
-			m.log.Error("error:", err)
-			// reconnect
-			m.Login()
-		}
-		if rmsg.Action == "ping" {
-			m.handleWsPing()
-			continue
-		}
-		msg := &Message{Raw: &rmsg, Team: m.Credentials.Team}
-		m.parseMessage(msg)
-		m.MessageChan <- msg
-	}
-
-}
-
-func (m *MMClient) handleWsPing() {
-	m.log.Debug("Ws PING")
-	if !m.WsQuit && !m.WsAway {
-		m.log.Debug("Ws PONG")
-		m.WsClient.WriteMessage(websocket.PongMessage, []byte{})
-	}
-}
-
-func (m *MMClient) parseMessage(rmsg *Message) {
-	switch rmsg.Raw.Action {
-	case model.ACTION_POSTED:
-		m.parseActionPost(rmsg)
-		/*
-			case model.ACTION_USER_REMOVED:
-				m.handleWsActionUserRemoved(&rmsg)
-			case model.ACTION_USER_ADDED:
-				m.handleWsActionUserAdded(&rmsg)
-		*/
-	}
-}
-
-func (m *MMClient) parseActionPost(rmsg *Message) {
-	data := model.PostFromJson(strings.NewReader(rmsg.Raw.Props["post"]))
-	//	log.Println("receiving userid", data.UserId)
-	// we don't have the user, refresh the userlist
-	if m.Users[data.UserId] == nil {
-		m.UpdateUsers()
-	}
-	rmsg.Username = m.Users[data.UserId].Username
-	rmsg.Channel = m.GetChannelName(data.ChannelId)
-	// direct message
-	if strings.Contains(rmsg.Channel, "__") {
-		//log.Println("direct message")
-		rcvusers := strings.Split(rmsg.Channel, "__")
-		if rcvusers[0] != m.User.Id {
-			rmsg.Channel = m.Users[rcvusers[0]].Username
-		} else {
-			rmsg.Channel = m.Users[rcvusers[1]].Username
-		}
-	}
-	rmsg.Text = data.Message
-	rmsg.Post = data
-	return
-}
-
-func (m *MMClient) UpdateUsers() error {
-	mmusers, _ := m.Client.GetProfilesForDirectMessageList(m.Team.Id)
-	m.Users = mmusers.Data.(map[string]*model.User)
-	return nil
-}
-
-func (m *MMClient) UpdateChannels() error {
-	mmchannels, _ := m.Client.GetChannels("")
-	m.Channels = mmchannels.Data.(*model.ChannelList)
-	mmchannels, _ = m.Client.GetMoreChannels("")
-	m.MoreChannels = mmchannels.Data.(*model.ChannelList)
-	return nil
-}
-
-func (m *MMClient) GetChannelName(id string) string {
-	for _, channel := range append(m.Channels.Channels, m.MoreChannels.Channels...) {
-		if channel.Id == id {
-			return channel.Name
-		}
-	}
-	// not found? could be a new direct message from mattermost. Try to update and check again
-	m.UpdateChannels()
-	for _, channel := range append(m.Channels.Channels, m.MoreChannels.Channels...) {
-		if channel.Id == id {
-			return channel.Name
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) GetChannelId(name string) string {
-	for _, channel := range append(m.Channels.Channels, m.MoreChannels.Channels...) {
-		if channel.Name == name {
-			return channel.Id
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) GetChannelHeader(id string) string {
-	for _, channel := range append(m.Channels.Channels, m.MoreChannels.Channels...) {
-		if channel.Id == id {
-			return channel.Header
-		}
-	}
-	return ""
-}
-
-func (m *MMClient) PostMessage(channel string, text string) {
-	post := &model.Post{ChannelId: m.GetChannelId(channel), Message: text}
-	m.Client.CreatePost(post)
-}
-
-func (m *MMClient) JoinChannel(channel string) error {
-	cleanChan := strings.Replace(channel, "#", "", 1)
-	if m.GetChannelId(cleanChan) == "" {
-		return errors.New("failed to join")
-	}
-	for _, c := range m.Channels.Channels {
-		if c.Name == cleanChan {
-			m.log.Debug("Not joining ", cleanChan, " already joined.")
-			return nil
-		}
-	}
-	m.log.Debug("Joining ", cleanChan)
-	_, err := m.Client.JoinChannel(m.GetChannelId(cleanChan))
-	if err != nil {
-		return errors.New("failed to join")
-	}
-	//	m.SyncChannel(m.getMMChannelId(strings.Replace(channel, "#", "", 1)), strings.Replace(channel, "#", "", 1))
-	return nil
-}
-
-func (m *MMClient) GetPostsSince(channelId string, time int64) *model.PostList {
-	res, err := m.Client.GetPostsSince(channelId, time)
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) SearchPosts(query string) *model.PostList {
-	res, err := m.Client.SearchPosts(query, false)
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) GetPosts(channelId string, limit int) *model.PostList {
-	res, err := m.Client.GetPosts(channelId, 0, limit, "")
-	if err != nil {
-		return nil
-	}
-	return res.Data.(*model.PostList)
-}
-
-func (m *MMClient) GetPublicLink(filename string) string {
-	res, err := m.Client.GetPublicLink(filename)
-	if err != nil {
-		return ""
-	}
-	return res.Data.(string)
-}
-
-func (m *MMClient) GetPublicLinks(filenames []string) []string {
-	var output []string
-	for _, f := range filenames {
-		res, err := m.Client.GetPublicLink(f)
-		if err != nil {
-			continue
-		}
-		output = append(output, res.Data.(string))
-	}
-	return output
-}
-
-func (m *MMClient) UpdateChannelHeader(channelId string, header string) {
-	data := make(map[string]string)
-	data["channel_id"] = channelId
-	data["channel_header"] = header
-	m.log.Debugf("updating channelheader %#v, %#v", channelId, header)
-	_, err := m.Client.UpdateChannelHeader(data)
-	if err != nil {
-		log.Error(err)
-	}
-}
-
-func (m *MMClient) UpdateLastViewed(channelId string) {
-	m.log.Debugf("posting lastview %#v", channelId)
-	_, err := m.Client.UpdateLastViewedAt(channelId)
-	if err != nil {
-		m.log.Error(err)
-	}
-}
-
-func (m *MMClient) UsernamesInChannel(channelName string) []string {
-	ceiRes, err := m.Client.GetChannelExtraInfo(m.GetChannelId(channelName), 5000, "")
-	if err != nil {
-		m.log.Errorf("UsernamesInChannel(%s) failed: %s", channelName, err)
-		return []string{}
-	}
-	extra := ceiRes.Data.(*model.ChannelExtra)
-	result := []string{}
-	for _, member := range extra.Members {
-		result = append(result, member.Username)
-	}
-	return result
-}
-
-func (m *MMClient) createCookieJar(token string) *cookiejar.Jar {
-	var cookies []*http.Cookie
-	jar, _ := cookiejar.New(nil)
-	firstCookie := &http.Cookie{
-		Name:   "MMAUTHTOKEN",
-		Value:  token,
-		Path:   "/",
-		Domain: m.Credentials.Server,
-	}
-	cookies = append(cookies, firstCookie)
-	cookieURL, _ := url.Parse("https://" + m.Credentials.Server)
-	jar.SetCookies(cookieURL, cookies)
-	return jar
-}
-
-func (m *MMClient) GetOtherUserDM(channel string) *model.User {
-	m.UpdateUsers()
-	var rcvuser *model.User
-	if strings.Contains(channel, "__") {
-		rcvusers := strings.Split(channel, "__")
-		if rcvusers[0] != m.User.Id {
-			rcvuser = m.Users[rcvusers[0]]
-		} else {
-			rcvuser = m.Users[rcvusers[1]]
-		}
-	}
-	return rcvuser
-}
-
-func (m *MMClient) SendDirectMessage(toUserId string, msg string) {
-	m.log.Debugf("SendDirectMessage to %s, msg %s", toUserId, msg)
-	var channel string
-	// We don't have a DM with this user yet.
-	if m.GetChannelId(toUserId+"__"+m.User.Id) == "" && m.GetChannelId(m.User.Id+"__"+toUserId) == "" {
-		// create DM channel
-		_, err := m.Client.CreateDirectChannel(toUserId)
-		if err != nil {
-			m.log.Debugf("SendDirectMessage to %#v failed: %s", toUserId, err)
-		}
-		// update our channels
-		mmchannels, _ := m.Client.GetChannels("")
-		m.Channels = mmchannels.Data.(*model.ChannelList)
-	}
-
-	// build the channel name
-	if toUserId > m.User.Id {
-		channel = m.User.Id + "__" + toUserId
-	} else {
-		channel = toUserId + "__" + m.User.Id
-	}
-	// build & send the message
-	msg = strings.Replace(msg, "\r", "", -1)
-	post := &model.Post{ChannelId: m.GetChannelId(channel), Message: msg}
-	m.Client.CreatePost(post)
-}

vendor/github.com/Philipp15b/go-steam/.gitignore

@@ -0,0 +1,22 @@
+# Compiled Object files, Static and Dynamic libs (Shared Objects)
+*.o
+*.a
+*.so
+
+# Folders
+_obj
+_test
+
+# Architecture specific extensions/prefixes
+*.[568vq]
+[568vq].out
+
+*.cgo1.go
+*.cgo2.c
+_cgo_defun.c
+_cgo_gotypes.go
+_cgo_export.*
+
+_testmain.go
+
+*.exe

vendor/github.com/Philipp15b/go-steam/.gitmodules

@@ -0,0 +1,3 @@
+[submodule "generator/SteamKit"]
+	path = generator/SteamKit
+	url = https://github.com/Philipp15b/SteamKit.git

vendor/github.com/Philipp15b/go-steam/LICENSE.txt

@@ -0,0 +1,26 @@
+Copyright (c) 2014 The go-steam Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * The names of its contributors may not be used to endorse or promote
+products derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

vendor/github.com/Philipp15b/go-steam/README.md

@@ -0,0 +1,64 @@
+# Steam for Go
+
+This library implements Steam's protocol to allow automation of different actions on Steam without running an actual Steam client. It is based on [SteamKit2](https://github.com/SteamRE/SteamKit), a .NET library.
+
+In addition, it contains APIs to Steam Community features, like trade offers and inventories.
+
+Some of the currently implemented features:
+
+  * Trading and trade offers, including inventories and notifications
+  * Friend and group management
+  * Chatting with friends
+  * Persona states (online, offline, looking to trade, etc.)
+  * SteamGuard with two-factor authentication
+  * Team Fortress 2: Crafting, moving, naming and deleting items
+
+If this is useful to you, there's also the [go-steamapi](https://github.com/Philipp15b/go-steamapi) package that wraps some of the official Steam Web API's types.
+
+## Installation
+
+    go get github.com/Philipp15b/go-steam
+
+## Usage
+
+You can view the documentation with the [`godoc`](http://golang.org/cmd/godoc) tool or
+[online on godoc.org](http://godoc.org/github.com/Philipp15b/go-steam).
+
+You should also take a look at the following sub-packages:
+
+  * [`gsbot`](http://godoc.org/github.com/Philipp15b/go-steam/gsbot) utilites that make writing bots easier
+  * [example bot](http://godoc.org/github.com/Philipp15b/go-steam/gsbot/gsbot) and [its source code](https://github.com/Philipp15b/go-steam/blob/master/gsbot/gsbot/gsbot.go)
+  * [`trade`](http://godoc.org/github.com/Philipp15b/go-steam/trade) for trading
+  * [`tradeoffer`](http://godoc.org/github.com/Philipp15b/go-steam/tradeoffer) for trade offers
+  * [`economy/inventory`](http://godoc.org/github.com/Philipp15b/go-steam/economy/inventory) for inventories
+  * [`tf2`](http://godoc.org/github.com/Philipp15b/go-steam/tf2) for Team Fortress 2 related things
+
+## Working with go-steam
+
+Whether you want to develop your own Steam bot or directly work on go-steam itself, there are are few things to know.
+
+ * If something is not working, check first if the same operation works (under the same conditions!) in the Steam client on that account. Maybe there's something go-steam doesn't handle correctly or you're missing a warning that's not obviously shown in go-steam. This is particularly important when working with trading since there are [restrictions](https://support.steampowered.com/kb_article.php?ref=1047-edfm-2932), for example newly authorized devices will not be able to trade for seven days.
+ * Since Steam does not maintain a public API for most of the things go-steam implements, you can expect that sometimes things break randomly. Especially the `trade` and `tradeoffer` packages have been affected in the past.
+ * Always gather as much information as possible. When you file an issue, be as precise and complete as you can. This makes debugging way easier.
+ * If you haven't noticed yet, expect to find lots of things out yourself. Debugging can be complicated and Steam's internals are too.
+ * Sometimes things break and other [SteamKit ports](https://github.com/SteamRE/SteamKit/wiki/Ports) are fixed already. Maybe take a look what people are saying over there? There's also the [SteamKit IRC channel](https://github.com/SteamRE/SteamKit/wiki#contact).
+
+## Updating go-steam to a new SteamKit version
+
+To update go-steam to a new version of SteamKit, do the following:
+
+	go get github.com/golang/protobuf/protoc-gen-go/
+    git submodule init && git submodule update
+    cd generator
+    go run generator.go clean proto steamlang
+
+Make sure that `$GOPATH/bin` / `protoc-gen-go` is in your `$PATH`. You'll also need [`protoc`](https://developers.google.com/protocol-buffers/docs/downloads), the protocol buffer compiler. At the moment, we use Protocol Buffers 2.6.1 with `proco-gen-go`-[2402d76](https://github.com/golang/protobuf/tree/2402d76f3d41f928c7902a765dfc872356dd3aad).
+
+To compile the Steam Language files, you also need the [.NET Framework](https://www.microsoft.com/net/downloads)
+on Windows or [mono](http://www.go-mono.com/mono-downloads/download.html) on other operating systems.
+
+Apply the protocol changes where necessary.
+
+## License
+
+Steam for Go is licensed under the New BSD License. More information can be found in LICENSE.txt.

vendor/github.com/Philipp15b/go-steam/auth.go

@@ -0,0 +1,203 @@
+package steam
+
+import (
+	"crypto/sha1"
+	"sync/atomic"
+	"time"
+
+	. "github.com/Philipp15b/go-steam/protocol"
+	. "github.com/Philipp15b/go-steam/protocol/protobuf"
+	. "github.com/Philipp15b/go-steam/protocol/steamlang"
+	. "github.com/Philipp15b/go-steam/steamid"
+	"github.com/golang/protobuf/proto"
+)
+
+type Auth struct {
+	client  *Client
+	details *LogOnDetails
+}
+
+type SentryHash []byte
+
+type LogOnDetails struct {
+	Username string
+
+	// If logging into an account without a login key, the account's password.
+	Password string
+
+	// If you have a Steam Guard email code, you can provide it here.
+	AuthCode string
+
+	// If you have a Steam Guard mobile two-factor authentication code, you can provide it here.
+	TwoFactorCode  string
+	SentryFileHash SentryHash
+	LoginKey       string
+
+	// true if you want to get a login key which can be used in lieu of
+	// a password for subsequent logins. false or omitted otherwise.
+	ShouldRememberPassword bool
+}
+
+// Log on with the given details. You must always specify username and
+// password OR username and loginkey. For the first login, don't set an authcode or a hash and you'll
+//  receive an error (EResult_AccountLogonDenied)
+// and Steam will send you an authcode. Then you have to login again, this time with the authcode.
+// Shortly after logging in, you'll receive a MachineAuthUpdateEvent with a hash which allows
+// you to login without using an authcode in the future.
+//
+// If you don't use Steam Guard, username and password are enough.
+//
+// After the event EMsg_ClientNewLoginKey is received you can use the LoginKey
+// to login instead of using the password.
+func (a *Auth) LogOn(details *LogOnDetails) {
+	if details.Username == "" {
+		panic("Username must be set!")
+	}
+	if details.Password == "" && details.LoginKey == "" {
+		panic("Password or LoginKey must be set!")
+	}
+
+	logon := new(CMsgClientLogon)
+	logon.AccountName = &details.Username
+	logon.Password = &details.Password
+	if details.AuthCode != "" {
+		logon.AuthCode = proto.String(details.AuthCode)
+	}
+	if details.TwoFactorCode != "" {
+		logon.TwoFactorCode = proto.String(details.TwoFactorCode)
+	}
+	logon.ClientLanguage = proto.String("english")
+	logon.ProtocolVersion = proto.Uint32(MsgClientLogon_CurrentProtocol)
+	logon.ShaSentryfile = details.SentryFileHash
+	if details.LoginKey != "" {
+		logon.LoginKey = proto.String(details.LoginKey)
+	}
+	if details.ShouldRememberPassword {
+		logon.ShouldRememberPassword = proto.Bool(details.ShouldRememberPassword)
+	}
+
+	atomic.StoreUint64(&a.client.steamId, uint64(NewIdAdv(0, 1, int32(EUniverse_Public), int32(EAccountType_Individual))))
+
+	a.client.Write(NewClientMsgProtobuf(EMsg_ClientLogon, logon))
+}
+
+func (a *Auth) HandlePacket(packet *Packet) {
+	switch packet.EMsg {
+	case EMsg_ClientLogOnResponse:
+		a.handleLogOnResponse(packet)
+	case EMsg_ClientNewLoginKey:
+		a.handleLoginKey(packet)
+	case EMsg_ClientSessionToken:
+	case EMsg_ClientLoggedOff:
+		a.handleLoggedOff(packet)
+	case EMsg_ClientUpdateMachineAuth:
+		a.handleUpdateMachineAuth(packet)
+	case EMsg_ClientAccountInfo:
+		a.handleAccountInfo(packet)
+	case EMsg_ClientWalletInfoUpdate:
+	case EMsg_ClientRequestWebAPIAuthenticateUserNonceResponse:
+	case EMsg_ClientMarketingMessageUpdate:
+	}
+}
+
+func (a *Auth) handleLogOnResponse(packet *Packet) {
+	if !packet.IsProto {
+		a.client.Fatalf("Got non-proto logon response!")
+		return
+	}
+
+	body := new(CMsgClientLogonResponse)
+	msg := packet.ReadProtoMsg(body)
+
+	result := EResult(body.GetEresult())
+	if result == EResult_OK {
+		atomic.StoreInt32(&a.client.sessionId, msg.Header.Proto.GetClientSessionid())
+		atomic.StoreUint64(&a.client.steamId, msg.Header.Proto.GetSteamid())
+		a.client.Web.webLoginKey = *body.WebapiAuthenticateUserNonce
+
+		go a.client.heartbeatLoop(time.Duration(body.GetOutOfGameHeartbeatSeconds()))
+
+		a.client.Emit(&LoggedOnEvent{
+			Result:                    EResult(body.GetEresult()),
+			ExtendedResult:            EResult(body.GetEresultExtended()),
+			OutOfGameSecsPerHeartbeat: body.GetOutOfGameHeartbeatSeconds(),
+			InGameSecsPerHeartbeat:    body.GetInGameHeartbeatSeconds(),
+			PublicIp:                  body.GetPublicIp(),
+			ServerTime:                body.GetRtime32ServerTime(),
+			AccountFlags:              EAccountFlags(body.GetAccountFlags()),
+			ClientSteamId:             SteamId(body.GetClientSuppliedSteamid()),
+			EmailDomain:               body.GetEmailDomain(),
+			CellId:                    body.GetCellId(),
+			CellIdPingThreshold:       body.GetCellIdPingThreshold(),
+			Steam2Ticket:              body.GetSteam2Ticket(),
+			UsePics:                   body.GetUsePics(),
+			WebApiUserNonce:           body.GetWebapiAuthenticateUserNonce(),
+			IpCountryCode:             body.GetIpCountryCode(),
+			VanityUrl:                 body.GetVanityUrl(),
+			NumLoginFailuresToMigrate: body.GetCountLoginfailuresToMigrate(),
+			NumDisconnectsToMigrate:   body.GetCountDisconnectsToMigrate(),
+		})
+	} else if result == EResult_Fail || result == EResult_ServiceUnavailable || result == EResult_TryAnotherCM {
+		// some error on Steam's side, we'll get an EOF later
+	} else {
+		a.client.Emit(&LogOnFailedEvent{
+			Result: EResult(body.GetEresult()),
+		})
+		a.client.Disconnect()
+	}
+}
+
+func (a *Auth) handleLoginKey(packet *Packet) {
+	body := new(CMsgClientNewLoginKey)
+	packet.ReadProtoMsg(body)
+	a.client.Write(NewClientMsgProtobuf(EMsg_ClientNewLoginKeyAccepted, &CMsgClientNewLoginKeyAccepted{
+		UniqueId: proto.Uint32(body.GetUniqueId()),
+	}))
+	a.client.Emit(&LoginKeyEvent{
+		UniqueId: body.GetUniqueId(),
+		LoginKey: body.GetLoginKey(),
+	})
+}
+
+func (a *Auth) handleLoggedOff(packet *Packet) {
+	result := EResult_Invalid
+	if packet.IsProto {
+		body := new(CMsgClientLoggedOff)
+		packet.ReadProtoMsg(body)
+		result = EResult(body.GetEresult())
+	} else {
+		body := new(MsgClientLoggedOff)
+		packet.ReadClientMsg(body)
+		result = body.Result
+	}
+	a.client.Emit(&LoggedOffEvent{Result: result})
+}
+
+func (a *Auth) handleUpdateMachineAuth(packet *Packet) {
+	body := new(CMsgClientUpdateMachineAuth)
+	packet.ReadProtoMsg(body)
+	hash := sha1.New()
+	hash.Write(packet.Data)
+	sha := hash.Sum(nil)
+
+	msg := NewClientMsgProtobuf(EMsg_ClientUpdateMachineAuthResponse, &CMsgClientUpdateMachineAuthResponse{
+		ShaFile: sha,
+	})
+	msg.SetTargetJobId(packet.SourceJobId)
+	a.client.Write(msg)
+
+	a.client.Emit(&MachineAuthUpdateEvent{sha})
+}
+
+func (a *Auth) handleAccountInfo(packet *Packet) {
+	body := new(CMsgClientAccountInfo)
+	packet.ReadProtoMsg(body)
+	a.client.Emit(&AccountInfoEvent{
+		PersonaName:          body.GetPersonaName(),
+		Country:              body.GetIpCountry(),
+		CountAuthedComputers: body.GetCountAuthedComputers(),
+		AccountFlags:         EAccountFlags(body.GetAccountFlags()),
+		FacebookId:           body.GetFacebookId(),
+		FacebookName:         body.GetFacebookName(),
+	})
+}

vendor/github.com/Philipp15b/go-steam/auth_events.go

@@ -0,0 +1,53 @@
+package steam
+
+import (
+	. "github.com/Philipp15b/go-steam/protocol/steamlang"
+	. "github.com/Philipp15b/go-steam/steamid"
+)
+
+type LoggedOnEvent struct {
+	Result                    EResult
+	ExtendedResult            EResult
+	OutOfGameSecsPerHeartbeat int32
+	InGameSecsPerHeartbeat    int32
+	PublicIp                  uint32
+	ServerTime                uint32
+	AccountFlags              EAccountFlags
+	ClientSteamId             SteamId `json:",string"`
+	EmailDomain               string
+	CellId                    uint32
+	CellIdPingThreshold       uint32
+	Steam2Ticket              []byte
+	UsePics                   bool
+	WebApiUserNonce           string
+	IpCountryCode             string
+	VanityUrl                 string
+	NumLoginFailuresToMigrate int32
+	NumDisconnectsToMigrate   int32
+}
+
+type LogOnFailedEvent struct {
+	Result EResult
+}
+
+type LoginKeyEvent struct {
+	UniqueId uint32
+	LoginKey string
+}
+
+type LoggedOffEvent struct {
+	Result EResult
+}
+
+type MachineAuthUpdateEvent struct {
+	Hash []byte
+}
+
+type AccountInfoEvent struct {
+	PersonaName          string
+	Country              string
+	CountAuthedComputers int32
+	AccountFlags         EAccountFlags
+	FacebookId           uint64 `json:",string"`
+	FacebookName         string
+}

vendor/github.com/Philipp15b/go-steam/client.go

@@ -0,0 +1,383 @@
+package steam
+
+import (
+	"bytes"
+	"compress/gzip"
+	"crypto/rand"
+	"encoding/binary"
+	"fmt"
+	"hash/crc32"
+	"io/ioutil"
+	"net"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	"github.com/Philipp15b/go-steam/cryptoutil"
+	"github.com/Philipp15b/go-steam/netutil"
+	. "github.com/Philipp15b/go-steam/protocol"
+	. "github.com/Philipp15b/go-steam/protocol/protobuf"
+	. "github.com/Philipp15b/go-steam/protocol/steamlang"
+	. "github.com/Philipp15b/go-steam/steamid"
+)
+
+// Represents a client to the Steam network.
+// Always poll events from the channel returned by Events() or receiving messages will stop.
+// All access, unless otherwise noted, should be threadsafe.
+//
+// When a FatalErrorEvent is emitted, the connection is automatically closed. The same client can be used to reconnect.
+// Other errors don't have any effect.
+type Client struct {
+	// these need to be 64 bit aligned for sync/atomic on 32bit
+	sessionId    int32
+	_            uint32
+	steamId      uint64
+	currentJobId uint64
+
+	Auth          *Auth
+	Social        *Social
+	Web           *Web
+	Notifications *Notifications
+	Trading       *Trading
+	GC            *GameCoordinator
+
+	events        chan interface{}
+	handlers      []PacketHandler
+	handlersMutex sync.RWMutex
+
+	tempSessionKey []byte
+
+	ConnectionTimeout time.Duration
+
+	mutex     sync.RWMutex // guarding conn and writeChan
+	conn      connection
+	writeChan chan IMsg
+	writeBuf  *bytes.Buffer
+	heartbeat *time.Ticker
+}
+
+type PacketHandler interface {
+	HandlePacket(*Packet)
+}
+
+func NewClient() *Client {
+	client := &Client{
+		events:   make(chan interface{}, 3),
+		writeBuf: new(bytes.Buffer),
+	}
+	client.Auth = &Auth{client: client}
+	client.RegisterPacketHandler(client.Auth)
+	client.Social = newSocial(client)
+	client.RegisterPacketHandler(client.Social)
+	client.Web = &Web{client: client}
+	client.RegisterPacketHandler(client.Web)
+	client.Notifications = newNotifications(client)
+	client.RegisterPacketHandler(client.Notifications)
+	client.Trading = &Trading{client: client}
+	client.RegisterPacketHandler(client.Trading)
+	client.GC = newGC(client)
+	client.RegisterPacketHandler(client.GC)
+	return client
+}
+
+// Get the event channel. By convention all events are pointers, except for errors.
+// It is never closed.
+func (c *Client) Events() <-chan interface{} {
+	return c.events
+}
+
+func (c *Client) Emit(event interface{}) {
+	c.events <- event
+}
+
+// Emits a FatalErrorEvent formatted with fmt.Errorf and disconnects.
+func (c *Client) Fatalf(format string, a ...interface{}) {
+	c.Emit(FatalErrorEvent(fmt.Errorf(format, a...)))
+	c.Disconnect()
+}
+
+// Emits an error formatted with fmt.Errorf.
+func (c *Client) Errorf(format string, a ...interface{}) {
+	c.Emit(fmt.Errorf(format, a...))
+}
+
+// Registers a PacketHandler that receives all incoming packets.
+func (c *Client) RegisterPacketHandler(handler PacketHandler) {
+	c.handlersMutex.Lock()
+	defer c.handlersMutex.Unlock()
+	c.handlers = append(c.handlers, handler)
+}
+
+func (c *Client) GetNextJobId() JobId {
+	return JobId(atomic.AddUint64(&c.currentJobId, 1))
+}
+
+func (c *Client) SteamId() SteamId {
+	return SteamId(atomic.LoadUint64(&c.steamId))
+}
+
+func (c *Client) SessionId() int32 {
+	return atomic.LoadInt32(&c.sessionId)
+}
+
+func (c *Client) Connected() bool {
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+	return c.conn != nil
+}
+
+// Connects to a random Steam server and returns its address.
+// If this client is already connected, it is disconnected first.
+// This method tries to use an address from the Steam Directory and falls
+// back to the built-in server list if the Steam Directory can't be reached.
+// If you want to connect to a specific server, use `ConnectTo`.
+func (c *Client) Connect() *netutil.PortAddr {
+	var server *netutil.PortAddr
+	if steamDirectoryCache.IsInitialized() {
+		server = steamDirectoryCache.GetRandomCM()
+	} else {
+		server = GetRandomCM()
+	}
+	c.ConnectTo(server)
+	return server
+}
+
+// Connects to a specific server.
+// You may want to use one of the `GetRandom*CM()` functions in this package.
+// If this client is already connected, it is disconnected first.
+func (c *Client) ConnectTo(addr *netutil.PortAddr) {
+	c.ConnectToBind(addr, nil)
+}
+
+// Connects to a specific server, and binds to a specified local IP
+// If this client is already connected, it is disconnected first.
+func (c *Client) ConnectToBind(addr *netutil.PortAddr, local *net.TCPAddr) {
+	c.Disconnect()
+
+	conn, err := dialTCP(local, addr.ToTCPAddr())
+	if err != nil {
+		c.Fatalf("Connect failed: %v", err)
+		return
+	}
+	c.conn = conn
+	c.writeChan = make(chan IMsg, 5)
+
+	go c.readLoop()
+	go c.writeLoop()
+}
+
+func (c *Client) Disconnect() {
+	c.mutex.Lock()
+	defer c.mutex.Unlock()
+
+	if c.conn == nil {
+		return
+	}
+
+	c.conn.Close()
+	c.conn = nil
+	if c.heartbeat != nil {
+		c.heartbeat.Stop()
+	}
+	close(c.writeChan)
+	c.Emit(&DisconnectedEvent{})
+
+}
+
+// Adds a message to the send queue. Modifications to the given message after
+// writing are not allowed (possible race conditions).
+//
+// Writes to this client when not connected are ignored.
+func (c *Client) Write(msg IMsg) {
+	if cm, ok := msg.(IClientMsg); ok {
+		cm.SetSessionId(c.SessionId())
+		cm.SetSteamId(c.SteamId())
+	}
+	c.mutex.RLock()
+	defer c.mutex.RUnlock()
+	if c.conn == nil {
+		return
+	}
+	c.writeChan <- msg
+}
+
+func (c *Client) readLoop() {
+	for {
+		// This *should* be atomic on most platforms, but the Go spec doesn't guarantee it
+		c.mutex.RLock()
+		conn := c.conn
+		c.mutex.RUnlock()
+		if conn == nil {
+			return
+		}
+		packet, err := conn.Read()
+
+		if err != nil {
+			c.Fatalf("Error reading from the connection: %v", err)
+			return
+		}
+		c.handlePacket(packet)
+	}
+}
+
+func (c *Client) writeLoop() {
+	for {
+		c.mutex.RLock()
+		conn := c.conn
+		c.mutex.RUnlock()
+		if conn == nil {
+			return
+		}
+
+		msg, ok := <-c.writeChan
+		if !ok {
+			return
+		}
+
+		err := msg.Serialize(c.writeBuf)
+		if err != nil {
+			c.writeBuf.Reset()
+			c.Fatalf("Error serializing message %v: %v", msg, err)
+			return
+		}
+
+		err = conn.Write(c.writeBuf.Bytes())
+
+		c.writeBuf.Reset()
+
+		if err != nil {
+			c.Fatalf("Error writing message %v: %v", msg, err)
+			return
+		}
+	}
+}
+
+func (c *Client) heartbeatLoop(seconds time.Duration) {
+	if c.heartbeat != nil {
+		c.heartbeat.Stop()
+	}
+	c.heartbeat = time.NewTicker(seconds * time.Second)
+	for {
+		_, ok := <-c.heartbeat.C
+		if !ok {
+			break
+		}
+		c.Write(NewClientMsgProtobuf(EMsg_ClientHeartBeat, new(CMsgClientHeartBeat)))
+	}
+	c.heartbeat = nil
+}
+
+func (c *Client) handlePacket(packet *Packet) {
+	switch packet.EMsg {
+	case EMsg_ChannelEncryptRequest:
+		c.handleChannelEncryptRequest(packet)
+	case EMsg_ChannelEncryptResult:
+		c.handleChannelEncryptResult(packet)
+	case EMsg_Multi:
+		c.handleMulti(packet)
+	case EMsg_ClientCMList:
+		c.handleClientCMList(packet)
+	}
+
+	c.handlersMutex.RLock()
+	defer c.handlersMutex.RUnlock()
+	for _, handler := range c.handlers {
+		handler.HandlePacket(packet)
+	}
+}
+
+func (c *Client) handleChannelEncryptRequest(packet *Packet) {
+	body := NewMsgChannelEncryptRequest()
+	packet.ReadMsg(body)
+
+	if body.Universe != EUniverse_Public {
+		c.Fatalf("Invalid univserse %v!", body.Universe)
+	}
+
+	c.tempSessionKey = make([]byte, 32)
+	rand.Read(c.tempSessionKey)
+	encryptedKey := cryptoutil.RSAEncrypt(GetPublicKey(EUniverse_Public), c.tempSessionKey)
+
+	payload := new(bytes.Buffer)
+	payload.Write(encryptedKey)
+	binary.Write(payload, binary.LittleEndian, crc32.ChecksumIEEE(encryptedKey))
+	payload.WriteByte(0)
+	payload.WriteByte(0)
+	payload.WriteByte(0)
+	payload.WriteByte(0)
+
+	c.Write(NewMsg(NewMsgChannelEncryptResponse(), payload.Bytes()))
+}
+
+func (c *Client) handleChannelEncryptResult(packet *Packet) {
+	body := NewMsgChannelEncryptResult()
+	packet.ReadMsg(body)
+
+	if body.Result != EResult_OK {
+		c.Fatalf("Encryption failed: %v", body.Result)
+		return
+	}
+	c.conn.SetEncryptionKey(c.tempSessionKey)
+	c.tempSessionKey = nil
+
+	c.Emit(&ConnectedEvent{})
+}
+
+func (c *Client) handleMulti(packet *Packet) {
+	body := new(CMsgMulti)
+	packet.ReadProtoMsg(body)
+
+	payload := body.GetMessageBody()
+
+	if body.GetSizeUnzipped() > 0 {
+		r, err := gzip.NewReader(bytes.NewReader(payload))
+		if err != nil {
+			c.Errorf("handleMulti: Error while decompressing: %v", err)
+			return
+		}
+
+		payload, err = ioutil.ReadAll(r)
+		if err != nil {
+			c.Errorf("handleMulti: Error while decompressing: %v", err)
+			return
+		}
+	}
+
+	pr := bytes.NewReader(payload)
+	for pr.Len() > 0 {
+		var length uint32
+		binary.Read(pr, binary.LittleEndian, &length)
+		packetData := make([]byte, length)
+		pr.Read(packetData)
+		p, err := NewPacket(packetData)
+		if err != nil {
+			c.Errorf("Error reading packet in Multi msg %v: %v", packet, err)
+			continue
+		}
+		c.handlePacket(p)
+	}
+}
+
+func (c *Client) handleClientCMList(packet *Packet) {
+	body := new(CMsgClientCMList)
+	packet.ReadProtoMsg(body)
+
+	l := make([]*netutil.PortAddr, 0)
+	for i, ip := range body.GetCmAddresses() {
+		l = append(l, &netutil.PortAddr{
+			readIp(ip),
+			uint16(body.GetCmPorts()[i]),
+		})
+	}
+
+	c.Emit(&ClientCMListEvent{l})
+}
+
+func readIp(ip uint32) net.IP {
+	r := make(net.IP, 4)
+	r[3] = byte(ip)
+	r[2] = byte(ip >> 8)
+	r[1] = byte(ip >> 16)
+	r[0] = byte(ip >> 24)
+	return r
+}

vendor/github.com/Philipp15b/go-steam/client_events.go

@@ -0,0 +1,20 @@
+package steam
+
+import (
+	"github.com/Philipp15b/go-steam/netutil"
+)
+
+// When this event is emitted by the Client, the connection is automatically closed.
+// This may be caused by a network error, for example.
+type FatalErrorEvent error
+
+type ConnectedEvent struct{}
+
+type DisconnectedEvent struct{}
+
+// A list of connection manager addresses to connect to in the future.
+// You should always save them and then select one of these
+// instead of the builtin ones for the next connection.
+type ClientCMListEvent struct {
+	Addresses []*netutil.PortAddr
+}

vendor/github.com/Philipp15b/go-steam/connection.go

@@ -0,0 +1,127 @@
+package steam
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"net"
+	"sync"
+
+	"github.com/Philipp15b/go-steam/cryptoutil"
+	. "github.com/Philipp15b/go-steam/protocol"
+)
+
+type connection interface {
+	Read() (*Packet, error)
+	Write([]byte) error
+	Close() error
+	SetEncryptionKey([]byte)
+	IsEncrypted() bool
+}
+
+const tcpConnectionMagic uint32 = 0x31305456 // "VT01"
+
+type tcpConnection struct {
+	conn        *net.TCPConn
+	ciph        cipher.Block
+	cipherMutex sync.RWMutex
+}
+
+func dialTCP(laddr, raddr *net.TCPAddr) (*tcpConnection, error) {
+	conn, err := net.DialTCP("tcp", laddr, raddr)
+	if err != nil {
+		return nil, err
+	}
+
+	return &tcpConnection{
+		conn: conn,
+	}, nil
+}
+
+func (c *tcpConnection) Read() (*Packet, error) {
+	// All packets begin with a packet length
+	var packetLen uint32
+	err := binary.Read(c.conn, binary.LittleEndian, &packetLen)
+	if err != nil {
+		return nil, err
+	}
+
+	// A magic value follows for validation
+	var packetMagic uint32
+	err = binary.Read(c.conn, binary.LittleEndian, &packetMagic)
+	if err != nil {
+		return nil, err
+	}
+	if packetMagic != tcpConnectionMagic {
+		return nil, fmt.Errorf("Invalid connection magic! Expected %d, got %d!", tcpConnectionMagic, packetMagic)
+	}
+
+	buf := make([]byte, packetLen, packetLen)
+	_, err = io.ReadFull(c.conn, buf)
+	if err == io.ErrUnexpectedEOF {
+		return nil, io.EOF
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	// Packets after ChannelEncryptResult are encrypted
+	c.cipherMutex.RLock()
+	if c.ciph != nil {
+		buf = cryptoutil.SymmetricDecrypt(c.ciph, buf)
+	}
+	c.cipherMutex.RUnlock()
+
+	return NewPacket(buf)
+}
+
+// Writes a message. This may only be used by one goroutine at a time.
+func (c *tcpConnection) Write(message []byte) error {
+	c.cipherMutex.RLock()
+	if c.ciph != nil {
+		message = cryptoutil.SymmetricEncrypt(c.ciph, message)
+	}
+	c.cipherMutex.RUnlock()
+
+	err := binary.Write(c.conn, binary.LittleEndian, uint32(len(message)))
+	if err != nil {
+		return err
+	}
+	err = binary.Write(c.conn, binary.LittleEndian, tcpConnectionMagic)
+	if err != nil {
+		return err
+	}
+
+	_, err = c.conn.Write(message)
+	return err
+}
+
+func (c *tcpConnection) Close() error {
+	return c.conn.Close()
+}
+
+func (c *tcpConnection) SetEncryptionKey(key []byte) {
+	c.cipherMutex.Lock()
+	defer c.cipherMutex.Unlock()
+	if key == nil {
+		c.ciph = nil
+		return
+	}
+	if len(key) != 32 {
+		panic("Connection AES key is not 32 bytes long!")
+	}
+
+	var err error
+	c.ciph, err = aes.NewCipher(key)
+	if err != nil {
+		panic(err)
+	}
+}
+
+func (c *tcpConnection) IsEncrypted() bool {
+	c.cipherMutex.RLock()
+	defer c.cipherMutex.RUnlock()
+	return c.ciph != nil
+}

vendor/github.com/Philipp15b/go-steam/cryptoutil/cryptoutil.go

@@ -0,0 +1,38 @@
+package cryptoutil
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"crypto/rand"
+)
+
+// Performs an encryption using AES/CBC/PKCS7
+// with a random IV prepended using AES/ECB/None.
+func SymmetricEncrypt(ciph cipher.Block, src []byte) []byte {
+	// get a random IV and ECB encrypt it
+	iv := make([]byte, aes.BlockSize, aes.BlockSize)
+	_, err := rand.Read(iv)
+	if err != nil {
+		panic(err)
+	}
+	encryptedIv := make([]byte, aes.BlockSize, aes.BlockSize)
+	newECBEncrypter(ciph).CryptBlocks(encryptedIv, iv)
+
+	// pad it, copy the IV to the first 16 bytes and encrypt the rest with CBC
+	encrypted := padPKCS7WithIV(src)
+	copy(encrypted, encryptedIv)
+	cipher.NewCBCEncrypter(ciph, iv).CryptBlocks(encrypted[aes.BlockSize:], encrypted[aes.BlockSize:])
+	return encrypted
+}
+
+// Decrypts data from the reader using AES/CBC/PKCS7 with an IV
+// prepended using AES/ECB/None. The src slice may not be used anymore.
+func SymmetricDecrypt(ciph cipher.Block, src []byte) []byte {
+	iv := src[:aes.BlockSize]
+	newECBDecrypter(ciph).CryptBlocks(iv, iv)
+
+	data := src[aes.BlockSize:]
+	cipher.NewCBCDecrypter(ciph, iv).CryptBlocks(data, data)
+
+	return unpadPKCS7(data)
+}

vendor/github.com/Philipp15b/go-steam/cryptoutil/ecb.go

@@ -0,0 +1,68 @@
+package cryptoutil
+
+import (
+	"crypto/cipher"
+)
+
+// From this code review: https://codereview.appspot.com/7860047/
+// by fasmat for the Go crypto/cipher package
+
+type ecb struct {
+	b         cipher.Block
+	blockSize int
+}
+
+func newECB(b cipher.Block) *ecb {
+	return &ecb{
+		b:         b,
+		blockSize: b.BlockSize(),
+	}
+}
+
+type ecbEncrypter ecb
+
+// NewECBEncrypter returns a BlockMode which encrypts in electronic code book
+// mode, using the given Block.
+func newECBEncrypter(b cipher.Block) cipher.BlockMode {
+	return (*ecbEncrypter)(newECB(b))
+}
+
+func (x *ecbEncrypter) BlockSize() int { return x.blockSize }
+
+func (x *ecbEncrypter) CryptBlocks(dst, src []byte) {
+	if len(src)%x.blockSize != 0 {
+		panic("cryptoutil/ecb: input not full blocks")
+	}
+	if len(dst) < len(src) {
+		panic("cryptoutil/ecb: output smaller than input")
+	}
+	for len(src) > 0 {
+		x.b.Encrypt(dst, src[:x.blockSize])
+		src = src[x.blockSize:]
+		dst = dst[x.blockSize:]
+	}
+}
+
+type ecbDecrypter ecb
+
+// newECBDecrypter returns a BlockMode which decrypts in electronic code book
+// mode, using the given Block.
+func newECBDecrypter(b cipher.Block) cipher.BlockMode {
+	return (*ecbDecrypter)(newECB(b))
+}
+
+func (x *ecbDecrypter) BlockSize() int { return x.blockSize }
+
+func (x *ecbDecrypter) CryptBlocks(dst, src []byte) {
+	if len(src)%x.blockSize != 0 {
+		panic("cryptoutil/ecb: input not full blocks")
+	}
+	if len(dst) < len(src) {
+		panic("cryptoutil/ecb: output smaller than input")
+	}
+	for len(src) > 0 {
+		x.b.Decrypt(dst, src[:x.blockSize])
+		src = src[x.blockSize:]
+		dst = dst[x.blockSize:]
+	}
+}

vendor/github.com/Philipp15b/go-steam/cryptoutil/pkcs7.go

@@ -0,0 +1,25 @@
+package cryptoutil
+
+import (
+	"crypto/aes"
+)
+
+// Returns a new byte array padded with PKCS7 and prepended
+// with empty space of the AES block size (16 bytes) for the IV.
+func padPKCS7WithIV(src []byte) []byte {
+	missing := aes.BlockSize - (len(src) % aes.BlockSize)
+	newSize := len(src) + aes.BlockSize + missing
+	dest := make([]byte, newSize, newSize)
+	copy(dest[aes.BlockSize:], src)
+
+	padding := byte(missing)
+	for i := newSize - missing; i < newSize; i++ {
+		dest[i] = padding
+	}
+	return dest
+}
+
+func unpadPKCS7(src []byte) []byte {
+	padLen := src[len(src)-1]
+	return src[:len(src)-int(padLen)]
+}

vendor/github.com/Philipp15b/go-steam/cryptoutil/rsa.go

@@ -0,0 +1,31 @@
+package cryptoutil
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/x509"
+	"errors"
+)
+
+// Parses a DER encoded RSA public key
+func ParseASN1RSAPublicKey(derBytes []byte) (*rsa.PublicKey, error) {
+	key, err := x509.ParsePKIXPublicKey(derBytes)
+	if err != nil {
+		return nil, err
+	}
+	pubKey, ok := key.(*rsa.PublicKey)
+	if !ok {
+		return nil, errors.New("not an RSA public key")
+	}
+	return pubKey, nil
+}
+
+// Encrypts a message with the given public key using RSA-OAEP and the sha1 hash function.
+func RSAEncrypt(pub *rsa.PublicKey, msg []byte) []byte {
+	b, err := rsa.EncryptOAEP(sha1.New(), rand.Reader, pub, msg, nil)
+	if err != nil {
+		panic(err)
+	}
+	return b
+}

vendor/github.com/Philipp15b/go-steam/doc.go

@@ -0,0 +1,53 @@
+/*
+This package allows you to automate actions on Valve's Steam network. It is a Go port of SteamKit.
+
+To login, you'll have to create a new Client first. Then connect to the Steam network
+and wait for a ConnectedCallback. Then you may call the Login method in the Auth module
+with your login information. This is covered in more detail in the method's documentation. After you've
+received the LoggedOnEvent, you should set your persona state to online to receive friend lists etc.
+
+Example code
+
+You can also find a running example in the `gsbot` package.
+
+	package main
+
+	import (
+		"io/ioutil"
+		"log"
+
+		"github.com/Philipp15b/go-steam"
+		"github.com/Philipp15b/go-steam/protocol/steamlang"
+	)
+
+	func main() {
+		myLoginInfo := new(steam.LogOnDetails)
+		myLoginInfo.Username = "Your username"
+		myLoginInfo.Password = "Your password"
+
+		client := steam.NewClient()
+		client.Connect()
+		for event := range client.Events() {
+			switch e := event.(type) {
+			case *steam.ConnectedEvent:
+				client.Auth.LogOn(myLoginInfo)
+			case *steam.MachineAuthUpdateEvent:
+				ioutil.WriteFile("sentry", e.Hash, 0666)
+			case *steam.LoggedOnEvent:
+				client.Social.SetPersonaState(steamlang.EPersonaState_Online)
+			case steam.FatalErrorEvent:
+				log.Print(e)
+			case error:
+				log.Print(e)
+			}
+		}
+	}
+
+
+Events
+
+go-steam emits events that can be read via Client.Events(). Although the channel has the type interface{},
+only types from this package ending with "Event" and errors will be emitted.
+
+*/
+package steam

vendor/github.com/Philipp15b/go-steam/gamecoordinator.go

@@ -0,0 +1,79 @@
+package steam
+
+import (
+	"bytes"
+	. "github.com/Philipp15b/go-steam/protocol"
+	. "github.com/Philipp15b/go-steam/protocol/gamecoordinator"
+	. "github.com/Philipp15b/go-steam/protocol/protobuf"
+	. "github.com/Philipp15b/go-steam/protocol/steamlang"
+	"github.com/golang/protobuf/proto"
+)
+
+type GameCoordinator struct {
+	client   *Client
+	handlers []GCPacketHandler
+}
+
+func newGC(client *Client) *GameCoordinator {
+	return &GameCoordinator{
+		client:   client,
+		handlers: make([]GCPacketHandler, 0),
+	}
+}
+
+type GCPacketHandler interface {
+	HandleGCPacket(*GCPacket)
+}
+
+func (g *GameCoordinator) RegisterPacketHandler(handler GCPacketHandler) {
+	g.handlers = append(g.handlers, handler)
+}
+
+func (g *GameCoordinator) HandlePacket(packet *Packet) {
+	if packet.EMsg != EMsg_ClientFromGC {
+		return
+	}
+
+	msg := new(CMsgGCClient)
+	packet.ReadProtoMsg(msg)
+
+	p, err := NewGCPacket(msg)
+	if err != nil {
+		g.client.Errorf("Error reading GC message: %v", err)
+		return
+	}
+
+	for _, handler := range g.handlers {
+		handler.HandleGCPacket(p)
+	}
+}
+
+func (g *GameCoordinator) Write(msg IGCMsg) {
+	buf := new(bytes.Buffer)
+	msg.Serialize(buf)
+
+	msgType := msg.GetMsgType()
+	if msg.IsProto() {
+		msgType = msgType | 0x80000000 // mask with protoMask
+	}
+
+	g.client.Write(NewClientMsgProtobuf(EMsg_ClientToGC, &CMsgGCClient{
+		Msgtype: proto.Uint32(msgType),
+		Appid:   proto.Uint32(msg.GetAppId()),
+		Payload: buf.Bytes(),
+	}))
+}
+
+// Sets you in the given games. Specify none to quit all games.
+func (g *GameCoordinator) SetGamesPlayed(appIds ...uint64) {
+	games := make([]*CMsgClientGamesPlayed_GamePlayed, 0)
+	for _, appId := range appIds {
+		games = append(games, &CMsgClientGamesPlayed_GamePlayed{
+			GameId: proto.Uint64(appId),
+		})
+	}
+
+	g.client.Write(NewClientMsgProtobuf(EMsg_ClientGamesPlayed, &CMsgClientGamesPlayed{
+		GamesPlayed: games,
+	}))
+}