Release v1.11.1

Currently numbers are stripped not just after the color control code (\x03) but also after other formatting such as bold (\x02) and italic (\x1D), which is both unnecessary and leads to missing text from irc. This fixes that by only stripping numbers after the color control code.

README.md

@@ -49,7 +49,7 @@ Used by at least 2 projects. Feel free to make a PR to add your project to this
 
 # Requirements
 Accounts to one of the supported bridges
-* [Mattermost](https://github.com/mattermost/platform/) 3.8.x - 3.10.x, 4.x
+* [Mattermost](https://github.com/mattermost/platform/) 3.8.x - 3.10.x, 4.x, 5.x
 * [IRC](http://www.mirc.com/servers.html)
 * [XMPP](https://jabber.org)
 * [Gitter](https://gitter.im)
@@ -69,11 +69,13 @@ See https://github.com/42wim/matterbridge/wiki
 
 # Installing
 ## Binaries
-* Latest stable release [v1.10.1](https://github.com/42wim/matterbridge/releases/latest)
+* Latest stable release [v1.11.1](https://github.com/42wim/matterbridge/releases/latest)
 * Development releases (follows master) can be downloaded [here](https://dl.bintray.com/42wim/nightly/)  
 
 ## 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)
+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).
+
+After Go is setup, download matterbridge to your $GOPATH directory. 
 
 ```
 cd $GOPATH

bridge/api/api.go

@@ -2,14 +2,15 @@ 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"
-	"net/http"
-	"sync"
-	"time"
 )
 
 type Api struct {

bridge/config/config.go

@@ -2,14 +2,15 @@ package config
 
 import (
 	"bytes"
-	"github.com/fsnotify/fsnotify"
-	log "github.com/sirupsen/logrus"
-	"github.com/spf13/viper"
-	prefixed "github.com/x-cray/logrus-prefixed-formatter"
 	"os"
 	"strings"
 	"sync"
 	"time"
+
+	"github.com/fsnotify/fsnotify"
+	log "github.com/sirupsen/logrus"
+	"github.com/spf13/viper"
+	prefixed "github.com/x-cray/logrus-prefixed-formatter"
 )
 
 const (
@@ -73,6 +74,8 @@ type Protocol struct {
 	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
@@ -123,7 +126,7 @@ type Protocol struct {
 }
 
 type ChannelOptions struct {
-	Key        string // irc
+	Key        string // irc, xmpp
 	WebhookURL string // discord
 }
 

bridge/discord/discord.go

@@ -3,15 +3,18 @@ package bdiscord
 import (
 	"bytes"
 	"fmt"
+	"regexp"
+	"strings"
+	"sync"
+
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/bridge/helper"
 	"github.com/bwmarrin/discordgo"
-	"regexp"
-	"strings"
-	"sync"
 )
 
+const MessageLength = 1950
+
 type Bdiscord struct {
 	c              *discordgo.Session
 	Channels       []*discordgo.Channel
@@ -126,16 +129,22 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 	// Use webhook to send the message
 	if wID != "" {
 		// skip events
-		if msg.Event != "" {
+		if msg.Event != "" && msg.Event != config.EVENT_JOIN_LEAVE && msg.Event != config.EVENT_TOPIC_CHANGE {
 			return "", nil
 		}
 		b.Log.Debugf("Broadcasting using Webhook")
 		for _, f := range msg.Extra["file"] {
 			fi := f.(config.FileInfo)
 			if fi.URL != "" {
-				msg.Text += fi.URL + " "
+				msg.Text += " " + fi.URL
 			}
 		}
+		// skip empty messages
+		if msg.Text == "" {
+			return "", nil
+		}
+
+		msg.Text = helper.ClipMessage(msg.Text, MessageLength)
 		err := b.c.WebhookExecute(
 			wID,
 			wToken,
@@ -162,6 +171,7 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 	// 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)
 			b.c.ChannelMessageSend(channelID, rmsg.Username+rmsg.Text)
 		}
 		// check if we have files to upload (from slack, telegram or mattermost)
@@ -170,6 +180,7 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 		}
 	}
 
+	msg.Text = helper.ClipMessage(msg.Text, MessageLength)
 	// Edit message
 	if msg.ID != "" {
 		_, err := b.c.ChannelMessageEdit(channelID, msg.ID, msg.Username+msg.Text)

bridge/gitter/gitter.go

@@ -2,11 +2,12 @@ package bgitter
 
 import (
 	"fmt"
+	"strings"
+
 	"github.com/42wim/go-gitter"
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/bridge/helper"
-	"strings"
 )
 
 type Bgitter struct {

bridge/helper/helper.go

@@ -3,12 +3,15 @@ package helper
 import (
 	"bytes"
 	"fmt"
-	"github.com/42wim/matterbridge/bridge/config"
-	log "github.com/sirupsen/logrus"
 	"io"
 	"net/http"
+	"regexp"
 	"strings"
 	"time"
+	"unicode/utf8"
+
+	"github.com/42wim/matterbridge/bridge/config"
+	log "github.com/sirupsen/logrus"
 )
 
 func DownloadFile(url string) (*[]byte, error) {
@@ -57,7 +60,7 @@ func HandleExtra(msg *config.Message, general *config.Protocol) []config.Message
 		for _, f := range extra[config.EVENT_FILE_FAILURE_SIZE] {
 			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})
+			rmsg = append(rmsg, config.Message{Text: text, Username: "<system> ", Channel: msg.Channel, Account: msg.Account})
 		}
 		return rmsg
 	}
@@ -72,6 +75,19 @@ func GetAvatar(av map[string]string, userid string, general *config.Protocol) st
 }
 
 func HandleDownloadSize(flog *log.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.EVENT_FILE_FAILURE_SIZE
@@ -100,3 +116,15 @@ func RemoveEmptyNewLines(msg string) string {
 	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
+}

bridge/irc/irc.go

@@ -4,14 +4,6 @@ import (
 	"bytes"
 	"crypto/tls"
 	"fmt"
-	"github.com/42wim/matterbridge/bridge"
-	"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/paulrosania/go-charset/data"
-	"github.com/saintfish/chardet"
 	"hash/crc32"
 	"io"
 	"io/ioutil"
@@ -22,6 +14,15 @@ import (
 	"strings"
 	"time"
 	"unicode/utf8"
+
+	"github.com/42wim/matterbridge/bridge"
+	"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/paulrosania/go-charset/data"
+	"github.com/saintfish/chardet"
 )
 
 type Birc struct {
@@ -114,18 +115,19 @@ func (b *Birc) Connect() error {
 	go func() {
 		for {
 			if err := i.Connect(); err != nil {
-				b.Log.Errorf("error: %s", err)
-				b.Log.Info("reconnecting in 30 seconds...")
-				time.Sleep(30 * time.Second)
-				i.Handlers.Clear(girc.RPL_WELCOME)
-				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.EVENT_REJOIN_CHANNELS}
-					// set our correct nick on reconnect if necessary
-					b.Nick = event.Source.Name
-				})
+				b.Log.Errorf("disconnect: error: %s", err)
 			} else {
-				return
+				b.Log.Info("disconnect: client requested quit")
 			}
+
+			b.Log.Info("reconnecting in 30 seconds...")
+			time.Sleep(30 * time.Second)
+			i.Handlers.Clear(girc.RPL_WELCOME)
+			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.EVENT_REJOIN_CHANNELS}
+				// set our correct nick on reconnect if necessary
+				b.Nick = event.Source.Name
+			})
 		}
 	}()
 	b.i = i
@@ -250,7 +252,8 @@ func (b *Birc) doSend() {
 		username := msg.Username
 		if b.GetBool("Colornicks") {
 			checksum := crc32.ChecksumIEEE([]byte(msg.Username))
-			username = fmt.Sprintf("\x03%02d%s\x0F", checksum%0x10, 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.EVENT_USER_ACTION {
 			b.i.Cmd.Action(msg.Channel, username+msg.Text)
@@ -394,7 +397,7 @@ func (b *Birc) handlePrivMsg(client *girc.Client, event girc.Event) {
 	rmsg.Text += event.StripAction()
 
 	// strip IRC colors
-	re := regexp.MustCompile(`[[:cntrl:]](?:\d{1,2}(?:,\d{1,2})?)?`)
+	re := regexp.MustCompile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
 	rmsg.Text = re.ReplaceAllString(rmsg.Text, "")
 
 	// start detecting the charset

bridge/matrix/matrix.go

@@ -3,14 +3,15 @@ package bmatrix
 import (
 	"bytes"
 	"fmt"
-	"github.com/42wim/matterbridge/bridge"
-	"github.com/42wim/matterbridge/bridge/config"
-	"github.com/42wim/matterbridge/bridge/helper"
-	matrix "github.com/matterbridge/gomatrix"
 	"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 {

bridge/mattermost/mattermost.go

@@ -3,13 +3,14 @@ package bmattermost
 import (
 	"errors"
 	"fmt"
+	"strings"
+
 	"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"
 	"github.com/rs/xid"
-	"strings"
 )
 
 type Bmattermost struct {
@@ -184,6 +185,9 @@ func (b *Bmattermost) handleMatter() {
 	for message := range messages {
 		message.Avatar = helper.GetAvatar(b.avatarMap, message.UserID, b.General)
 		message.Account = b.Account
+		if nick := b.mc.GetNickName(message.UserID); nick != "" {
+			message.Username = nick
+		}
 		message.Text, ok = b.replaceAction(message.Text)
 		if ok {
 			message.Event = config.EVENT_USER_ACTION
@@ -204,7 +208,7 @@ func (b *Bmattermost) handleMatterClient(messages chan *config.Message) {
 		}
 
 		// only download avatars if we have a place to upload them (configured mediaserver)
-		if b.General.MediaServerUpload != "" {
+		if b.General.MediaServerUpload != "" || b.General.MediaDownloadPath != "" {
 			b.handleDownloadAvatar(message.UserID, message.Channel)
 		}
 
@@ -220,6 +224,18 @@ func (b *Bmattermost) handleMatterClient(messages chan *config.Message) {
 			}
 			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/slack/slack.go

@@ -19,14 +19,15 @@ import (
 )
 
 type Bslack struct {
-	mh         *matterhook.Client
-	sc         *slack.Client
-	rtm        *slack.RTM
-	Users      []slack.User
-	Usergroups []slack.UserGroup
-	si         *slack.Info
-	channels   []slack.Channel
-	uuid       string
+	mh           *matterhook.Client
+	sc           *slack.Client
+	rtm          *slack.RTM
+	Users        []slack.User
+	Usergroups   []slack.UserGroup
+	si           *slack.Info
+	channels     []slack.Channel
+	UseChannelID bool
+	uuid         string
 	*bridge.Config
 	sync.RWMutex
 }
@@ -98,6 +99,20 @@ func (b *Bslack) Disconnect() error {
 }
 
 func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
+	// use ID:channelid and resolve it to the actual name
+	idcheck := strings.Split(channel.Name, "ID:")
+	if len(idcheck) > 1 {
+		b.UseChannelID = true
+		ch, err := b.sc.GetChannelInfo(idcheck[1])
+		if err != nil {
+			return err
+		}
+		channel.Name = ch.Name
+		if err != nil {
+			return err
+		}
+	}
+
 	// we can only join channels using the API
 	if b.sc != nil {
 		if strings.HasPrefix(b.GetString("Token"), "xoxb") {
@@ -131,11 +146,7 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
 		return b.sendWebhook(msg)
 	}
 
-	// get the slack channel
-	schannel, err := b.getChannelByName(msg.Channel)
-	if err != nil {
-		return "", err
-	}
+	channelID := b.getChannelID(msg.Channel)
 
 	// Delete message
 	if msg.Event == config.EVENT_MSG_DELETE {
@@ -145,7 +156,7 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
 		}
 		// we get a "slack <ID>", split it
 		ts := strings.Fields(msg.ID)
-		_, _, err := b.sc.DeleteMessage(schannel.ID, ts[1])
+		_, _, err := b.sc.DeleteMessage(channelID, ts[1])
 		if err != nil {
 			return msg.ID, err
 		}
@@ -160,7 +171,7 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
 	// Edit message if we have an ID
 	if msg.ID != "" {
 		ts := strings.Fields(msg.ID)
-		_, _, _, err := b.sc.UpdateMessage(schannel.ID, ts[1], msg.Text)
+		_, _, _, err := b.sc.UpdateMessage(channelID, ts[1], msg.Text)
 		if err != nil {
 			return msg.ID, err
 		}
@@ -192,16 +203,16 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
 	// Upload a file if it exists
 	if msg.Extra != nil {
 		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
-			b.sc.PostMessage(schannel.ID, rmsg.Username+rmsg.Text, np)
+			b.sc.PostMessage(channelID, rmsg.Username+rmsg.Text, np)
 		}
 		// check if we have files to upload (from slack, telegram or mattermost)
 		if len(msg.Extra["file"]) > 0 {
-			b.handleUploadFile(&msg, schannel.ID)
+			b.handleUploadFile(&msg, channelID)
 		}
 	}
 
 	// Post normal message
-	_, id, err := b.sc.PostMessage(schannel.ID, msg.Text, np)
+	_, id, err := b.sc.PostMessage(channelID, msg.Text, np)
 	if err != nil {
 		return "", err
 	}
@@ -212,11 +223,11 @@ func (b *Bslack) Reload(cfg *bridge.Config) (string, error) {
 	return "", nil
 }
 
-func (b *Bslack) getAvatar(user string) string {
+func (b *Bslack) getAvatar(userid string) string {
 	var avatar string
 	if b.Users != nil {
 		for _, u := range b.Users {
-			if user == u.Name {
+			if userid == u.ID {
 				return u.Profile.Image48
 			}
 		}
@@ -224,6 +235,7 @@ func (b *Bslack) getAvatar(user string) string {
 	return avatar
 }
 
+/*
 func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
 	if b.channels == nil {
 		return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, name)
@@ -235,6 +247,7 @@ func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
 	}
 	return nil, fmt.Errorf("%s: channel %s not found", b.Account, name)
 }
+*/
 
 func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
 	if b.channels == nil {
@@ -270,7 +283,7 @@ func (b *Bslack) handleSlack() {
 		message.Text = html.UnescapeString(message.Text)
 
 		// Add the avatar
-		message.Avatar = b.getAvatar(strings.ToLower(message.Username))
+		message.Avatar = b.getAvatar(message.UserID)
 
 		b.Log.Debugf("<= Message is %#v", message)
 		b.Remote <- *message
@@ -357,7 +370,7 @@ func (b *Bslack) userGroupName(id string) string {
 
 // @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
 func (b *Bslack) replaceMention(text string) string {
-	results := regexp.MustCompile(`<@([a-zA-z0-9]+)>`).FindAllStringSubmatch(text, -1)
+	results := regexp.MustCompile(`<@([a-zA-Z0-9]+)>`).FindAllStringSubmatch(text, -1)
 	for _, r := range results {
 		text = strings.Replace(text, "<@"+r[1]+">", "@"+b.userName(r[1]), -1)
 	}
@@ -486,6 +499,10 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
 
 	rmsg := config.Message{Text: ev.Text, Channel: channel.Name, Account: b.Account, ID: "slack " + ev.Timestamp, Extra: make(map[string][]interface{})}
 
+	if b.UseChannelID {
+		rmsg.Channel = "ID:" + channel.ID
+	}
+
 	// find the user id and name
 	if ev.User != "" && ev.SubType != messageDeleted && ev.SubType != "file_comment" {
 		user, err := b.rtm.GetUserInfo(ev.User)
@@ -503,7 +520,10 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
 	if rmsg.Text == "" {
 		for _, attach := range ev.Attachments {
 			if attach.Text != "" {
-				rmsg.Text = attach.Text
+				if attach.Title != "" {
+					rmsg.Text = attach.Title + "\n"
+				}
+				rmsg.Text += attach.Text
 			} else {
 				rmsg.Text = attach.Fallback
 			}
@@ -679,3 +699,16 @@ func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool {
 	}
 	return false
 }
+
+func (b *Bslack) getChannelID(name string) string {
+	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 ""
+}

bridge/sshchat/sshchat.go

@@ -2,13 +2,14 @@ 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"
 	log "github.com/sirupsen/logrus"
-	"io"
-	"strings"
 )
 
 type Bsshchat struct {
@@ -120,6 +121,10 @@ func (b *Bsshchat) handleSshChat() error {
 	wait := true
 	for {
 		if b.r.Scan() {
+			// ignore messages from ourselves
+			if !strings.Contains(b.r.Text(), "\033[K") {
+				continue
+			}
 			res := strings.Split(stripPrompt(b.r.Text()), ":")
 			if res[0] == "-> Set theme" {
 				wait = false

bridge/telegram/html.go

@@ -2,8 +2,9 @@ package btelegram
 
 import (
 	"bytes"
-	"github.com/russross/blackfriday"
 	"html"
+
+	"github.com/russross/blackfriday"
 )
 
 type customHTML struct {

bridge/telegram/telegram.go

@@ -1,6 +1,7 @@
 package btelegram
 
 import (
+	"html"
 	"regexp"
 	"strconv"
 	"strings"
@@ -97,6 +98,10 @@ func (b *Btelegram) Send(msg config.Message) (string, error) {
 		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)
 		if b.GetString("MessageFormat") == "HTML" {
 			b.Log.Debug("Using mode HTML")
@@ -106,6 +111,10 @@ func (b *Btelegram) Send(msg config.Message) (string, error) {
 			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
@@ -391,13 +400,17 @@ func (b *Btelegram) sendMessage(chatid int64, username, text string) (string, er
 	m.Text = username + text
 	if b.GetString("MessageFormat") == "HTML" {
 		b.Log.Debug("Using mode HTML")
-		m.Text = username + text
 		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

bridge/xmpp/xmpp.go

@@ -2,13 +2,15 @@ package bxmpp
 
 import (
 	"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"
-	"strings"
-	"time"
+	"github.com/rs/xid"
 )
 
 type Bxmpp struct {
@@ -63,11 +65,18 @@ func (b *Bxmpp) Disconnect() error {
 }
 
 func (b *Bxmpp) JoinChannel(channel config.ChannelInfo) error {
-	b.xc.JoinMUCNoHistory(channel.Name+"@"+b.GetString("Muc"), b.GetString("Nick"))
+	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) {
+	var msgid = ""
+	var msgreplaceid = ""
 	// ignore delete messages
 	if msg.Event == config.EVENT_MSG_DELETE {
 		return "", nil
@@ -84,12 +93,17 @@ func (b *Bxmpp) Send(msg config.Message) (string, error) {
 		}
 	}
 
+	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})
+	_, 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 "", nil
+	return msgid, nil
 }
 
 func (b *Bxmpp) createXMPP() (*xmpp.Client, error) {
@@ -139,6 +153,7 @@ func (b *Bxmpp) xmppKeepAlive() chan bool {
 
 func (b *Bxmpp) handleXMPP() error {
 	var ok bool
+	var msgid string
 	done := b.xmppKeepAlive()
 	defer close(done)
 	for {
@@ -154,7 +169,11 @@ func (b *Bxmpp) handleXMPP() error {
 				if b.skipMessage(v) {
 					continue
 				}
-				rmsg := config.Message{Username: b.parseNick(v.Remote), Text: v.Text, Channel: b.parseChannel(v.Remote), Account: b.Account, UserID: v.Remote}
+				msgid = v.ID
+				if v.ReplaceID != "" {
+					msgid = v.ReplaceID
+				}
+				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)
@@ -181,6 +200,7 @@ func (b *Bxmpp) replaceAction(text string) (string, bool) {
 // 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 != "" {

changelog.md

@@ -1,14 +1,51 @@
+# 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)
-* 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 #41. See `QuoteFormat` in matterbridge.toml.sample
-* xmpp: Send attached files to XMPP in different message with OOB data and without body (#421)
 
 # v1.10.0
 ## New features

gateway/gateway.go

@@ -3,31 +3,35 @@ package gateway
 import (
 	"bytes"
 	"fmt"
+	"io/ioutil"
+	"net/http"
+	"os"
+
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/api"
 	"github.com/42wim/matterbridge/bridge/config"
-	"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"
+	bdiscord "github.com/42wim/matterbridge/bridge/discord"
+	bgitter "github.com/42wim/matterbridge/bridge/gitter"
+	birc "github.com/42wim/matterbridge/bridge/irc"
+	bmatrix "github.com/42wim/matterbridge/bridge/matrix"
+	bmattermost "github.com/42wim/matterbridge/bridge/mattermost"
+	brocketchat "github.com/42wim/matterbridge/bridge/rocketchat"
+	bslack "github.com/42wim/matterbridge/bridge/slack"
+	bsshchat "github.com/42wim/matterbridge/bridge/sshchat"
+	bsteam "github.com/42wim/matterbridge/bridge/steam"
+	btelegram "github.com/42wim/matterbridge/bridge/telegram"
+	bxmpp "github.com/42wim/matterbridge/bridge/xmpp"
+	bzulip "github.com/42wim/matterbridge/bridge/zulip"
+	"github.com/hashicorp/golang-lru"
 	log "github.com/sirupsen/logrus"
 	//	"github.com/davecgh/go-spew/spew"
 	"crypto/sha1"
-	"github.com/hashicorp/golang-lru"
-	"github.com/peterhellberg/emojilib"
-	"net/http"
 	"path/filepath"
 	"regexp"
 	"strings"
 	"time"
+
+	"github.com/peterhellberg/emojilib"
 )
 
 type Gateway struct {
@@ -411,46 +415,83 @@ func (gw *Gateway) modifyMessage(msg *config.Message) {
 	}
 }
 
+// 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.Config.General.MediaServerUpload == "" {
+
+	// If we don't have a attachfield or we don't have a mediaserver configured return
+	if msg.Extra == nil || (gw.Config.General.MediaServerUpload == "" && gw.Config.General.MediaDownloadPath == "") {
 		return
 	}
 
-	// if we actually have files, start uploading them to the mediaserver
-	if len(msg.Extra["file"]) > 0 {
-		client := &http.Client{
-			Timeout: time.Second * 5,
-		}
-		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 = fi.Name + ext
-			sha1sum := fmt.Sprintf("%x", sha1.Sum(*fi.Data))
-			reader := bytes.NewReader(*fi.Data)
+	// If we don't have files, nothing to upload.
+	if len(msg.Extra["file"]) == 0 {
+		return
+	}
+
+	client := &http.Client{
+		Timeout: time.Second * 5,
+	}
+
+	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 = fi.Name + ext
+
+		sha1sum := fmt.Sprintf("%x", sha1.Sum(*fi.Data))[:8]
+
+		if gw.Config.General.MediaServerUpload != "" {
+			// Use MediaServerUpload. Upload using a PUT HTTP request and basicauth.
+
 			url := gw.Config.General.MediaServerUpload + "/" + sha1sum + "/" + fi.Name
-			durl := gw.Config.General.MediaServerDownload + "/" + sha1sum + "/" + fi.Name
-			extra := msg.Extra["file"][i].(config.FileInfo)
-			extra.URL = durl
-			req, err := http.NewRequest("PUT", url, reader)
+
+			req, err := http.NewRequest("PUT", url, bytes.NewReader(*fi.Data))
 			if err != nil {
-				flog.Errorf("mediaserver upload failed: %#v", err)
+				flog.Errorf("mediaserver upload failed, could not create request: %#v", err)
 				continue
 			}
+
+			flog.Debugf("mediaserver upload url: %s", url)
+
 			req.Header.Set("Content-Type", "binary/octet-stream")
 			_, err = client.Do(req)
 			if err != nil {
-				flog.Errorf("mediaserver upload failed: %#v", err)
+				flog.Errorf("mediaserver upload failed, could not Do request: %#v", err)
+				continue
+			}
+		} else {
+			// Use MediaServerPath. Place the file on the current filesystem.
+
+			dir := gw.Config.General.MediaDownloadPath + "/" + sha1sum
+			err := os.Mkdir(dir, os.ModePerm)
+			if err != nil && !os.IsExist(err) {
+				flog.Errorf("mediaserver path failed, could not mkdir: %s %#v", err, err)
+				continue
+			}
+
+			path := dir + "/" + fi.Name
+			flog.Debugf("mediaserver path placing file: %s", path)
+
+			err = ioutil.WriteFile(path, *fi.Data, os.ModePerm)
+			if err != nil {
+				flog.Errorf("mediaserver path failed, could not writefile: %s %#v", err, err)
 				continue
 			}
-			flog.Debugf("mediaserver download URL = %s", durl)
-			// we uploaded the file successfully. Add the SHA
-			extra.SHA = sha1sum
-			msg.Extra["file"][i] = extra
 		}
+
+		// Download URL.
+		durl := gw.Config.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
 	}
 }
 

gateway/gateway_test.go

@@ -2,9 +2,10 @@ package gateway
 
 import (
 	"fmt"
+	"strconv"
+
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/stretchr/testify/assert"
-	"strconv"
 
 	"testing"
 )

gateway/router.go

@@ -2,9 +2,10 @@ package gateway
 
 import (
 	"fmt"
+
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
-	"github.com/42wim/matterbridge/gateway/samechannel"
+	samechannelgateway "github.com/42wim/matterbridge/gateway/samechannel"
 	//	"github.com/davecgh/go-spew/spew"
 	"time"
 )

gateway/samechannel/samechannel_test.go

@@ -2,6 +2,7 @@ package samechannelgateway
 
 import (
 	"fmt"
+
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/BurntSushi/toml"
 	"github.com/stretchr/testify/assert"

matterbridge.go

@@ -3,17 +3,18 @@ package main
 import (
 	"flag"
 	"fmt"
+	"os"
+	"strings"
+
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/gateway"
 	"github.com/google/gops/agent"
 	log "github.com/sirupsen/logrus"
 	prefixed "github.com/x-cray/logrus-prefixed-formatter"
-	"os"
-	"strings"
 )
 
 var (
-	version = "1.10.1"
+	version = "1.11.1"
 	githash string
 )
 

matterbridge.toml.sample

@@ -799,8 +799,10 @@ Token="Yourtokenhere"
 ## Settings below can be reloaded by editing the file
 
 #OPTIONAL (default empty)
-#Only supported format is "HTML", messages will be sent in html parsemode.
+#Supported formats are "HTML", "Markdown" and "HTMLNick"
 #See https://core.telegram.org/bots/api#html-style
+#See https://core.telegram.org/bots/api#markdown-style
+#HTMLNick only allows HTML for the nick, the message itself will be html-escaped
 MessageFormat=""
 
 #If enabled use the "First Name" as username. If this is empty use the Username
@@ -1305,10 +1307,13 @@ RemoteNickFormat="[{PROTOCOL}] <{NICK}> "
 StripNick=false
 
 
-#MediaServerUpload and MediaServerDownload are used for uploading images/files/video to
-#a remote "mediaserver" (a webserver like caddy for example).
-#When configured images/files uploaded on bridges like mattermost,slack, telegram will be downloaded
-#and uploaded again to MediaServerUpload URL
+#MediaServerUpload (or MediaDownloadPath) and MediaServerDownload are used for uploading
+#images/files/video to a remote "mediaserver" (a webserver like caddy for example).
+#When configured images/files uploaded on bridges like mattermost, slack, telegram will be
+#downloaded and uploaded again to MediaServerUpload URL
+#MediaDownloadPath is the filesystem path where the media file will be placed, instead of uploaded,
+#for if Matterbridge has write access to the directory your webserver is serving.
+#It is an alternative to MediaServerUpload.
 #The MediaServerDownload will be used so that bridges without native uploading support:
 #gitter, irc and xmpp will be shown links to the files on MediaServerDownload
 #
@@ -1316,6 +1321,8 @@ StripNick=false
 #OPTIONAL (default empty)
 MediaServerUpload="https://user:pass@yourserver.com/upload"
 #OPTIONAL (default empty)
+MediaDownloadPath="/srv/http/yourserver.com/public/download"
+#OPTIONAL (default empty)
 MediaServerDownload="https://youserver.com/download"
 
 #MediaDownloadSize is the maximum size of attachments, videos, images
@@ -1325,9 +1332,15 @@ MediaServerDownload="https://youserver.com/download"
 #It will only download from bridges that don't have public links available, which are for the moment
 #slack, telegram, matrix and mattermost
 #
-#Optional (default 1000000 (1 megabyte))
+#OPTIONAL (default 1000000 (1 megabyte))
 MediaDownloadSize=1000000
 
+#MediaDownloadBlacklist allows you to blacklist specific files from being downloaded.
+#Filenames matching these regexp will not be download/uploaded to the mediaserver
+#You can use regex for this, see https://regex-golang.appspot.com/assets/html/index.html for more regex info
+#OPTIONAL (default empty)
+MediaDownloadBlacklist=[".html$",".htm$"]
+
 ###################################################################
 #Gateway configuration
 ###################################################################
@@ -1364,6 +1377,7 @@ enable=true
     #gitter     - username/room 
     #xmpp       - channel
     #slack      - channel (without the #)
+    #           - ID:C123456 (where C123456 is the channel ID) does not work with webhook
     #discord    - channel (without the #)
     #           - ID:123456789 (where 123456789 is the channel ID) 
     #               (https://github.com/42wim/matterbridge/issues/57)
@@ -1380,9 +1394,9 @@ enable=true
     #REQUIRED
     channel="#testing"
 
-        #OPTIONAL - only used for IRC protocol at the moment
+        #OPTIONAL - only used for IRC and XMPP protocols at the moment
         [gateway.in.options]
-        #OPTIONAL - your irc channel key
+        #OPTIONAL - your irc / xmpp channel key
         key="yourkey"
 
 
@@ -1391,9 +1405,9 @@ enable=true
     account="irc.freenode"
     channel="#testing"
 
-        #OPTIONAL - only used for IRC protocol at the moment
+        #OPTIONAL - only used for IRC and XMPP protocols at the moment
         [gateway.out.options]
-        #OPTIONAL - your irc channel key
+        #OPTIONAL - your irc / xmpp channel key
         key="yourkey"
 
     #[[gateway.inout]] can be used when then channel will be used to receive from 
@@ -1402,9 +1416,9 @@ enable=true
     account="mattermost.work"
     channel="off-topic"
 
-        #OPTIONAL - only used for IRC protocol at the moment
+        #OPTIONAL - only used for IRC and XMPP protocols at the moment
         [gateway.inout.options]
-        #OPTIONAL - your irc channel key
+        #OPTIONAL - your irc / xmpp channel key
         key="yourkey"
 
     [[gateway.inout]]

matterclient/matterclient.go

@@ -310,6 +310,11 @@ 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 model.ACTION_USER_REMOVED:
 				m.handleWsActionUserRemoved(&rmsg)
@@ -750,6 +755,16 @@ func (m *MMClient) GetUser(userId string) *model.User {
 	return m.Users[userId]
 }
 
+func (m *MMClient) UpdateUser(userId string) {
+	m.Lock()
+	defer m.Unlock()
+	res, resp := m.Client.GetUser(userId, "")
+	if resp.Error != nil {
+		return
+	}
+	m.Users[userId] = res
+}
+
 func (m *MMClient) GetUserName(userId string) string {
 	user := m.GetUser(userId)
 	if user != nil {
@@ -758,6 +773,14 @@ func (m *MMClient) GetUserName(userId string) string {
 	return ""
 }
 
+func (m *MMClient) GetNickName(userId string) string {
+	user := m.GetUser(userId)
+	if user != nil {
+		return user.Nickname
+	}
+	return ""
+}
+
 func (m *MMClient) GetStatus(userId string) string {
 	res, resp := m.Client.GetUserStatus(userId, "")
 	if resp.Error != nil {
@@ -917,7 +940,8 @@ 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, "4.") ||
+		strings.HasPrefix(version, "5.") {
 		return true
 	}
 	return false

matterhook/matterhook.go

@@ -6,14 +6,15 @@ import (
 	"crypto/tls"
 	"encoding/json"
 	"fmt"
-	"github.com/gorilla/schema"
-	"github.com/nlopes/slack"
 	"io"
 	"io/ioutil"
 	"log"
 	"net"
 	"net/http"
 	"time"
+
+	"github.com/gorilla/schema"
+	"github.com/nlopes/slack"
 )
 
 // OMessage for mattermost incoming webhook. (send to mattermost)

vendor/github.com/matterbridge/go-xmpp/xmpp.go

@@ -575,6 +575,8 @@ type Chat struct {
 	Thread    string
 	Ooburl    string
 	Oobdesc   string
+	ID        string
+	ReplaceID string
 	Roster    Roster
 	Other     []string
 	OtherElem []XMLElement
@@ -626,6 +628,8 @@ func (c *Client) Recv() (stanza interface{}, err error) {
 				Text:      v.Body,
 				Subject:   v.Subject,
 				Thread:    v.Thread,
+				ID:        v.ID,
+				ReplaceID: v.ReplaceID.ID,
 				Other:     v.OtherStrings(),
 				OtherElem: v.Other,
 				Stamp:     stamp,
@@ -657,6 +661,8 @@ func (c *Client) Send(chat Chat) (n int, err error) {
 	var subtext = ``
 	var thdtext = ``
 	var oobtext = ``
+	var msgidtext = ``
+	var msgcorrecttext = ``
 	if chat.Subject != `` {
 		subtext = `<subject>` + xmlEscape(chat.Subject) + `</subject>`
 	}
@@ -670,7 +676,13 @@ func (c *Client) Send(chat Chat) (n int, err error) {
 		}
 		oobtext += `</x>`
 	}
-	return fmt.Fprintf(c.conn, "<message to='%s' type='%s' xml:lang='en'>" + subtext + "<body>%s</body>" + oobtext + thdtext + "</message>",
+	if chat.ID != `` {
+		msgidtext = `id='` + xmlEscape(chat.ID) + `'`
+	}
+	if chat.ReplaceID != `` {
+		msgcorrecttext = `<replace id='` + xmlEscape(chat.ReplaceID) + `' xmlns='urn:xmpp:message-correct:0'/>`
+	}
+	return fmt.Fprintf(c.conn, "<message to='%s' type='%s' " + msgidtext + " xml:lang='en'>" + subtext + "<body>%s</body>" + msgcorrecttext + oobtext + thdtext + "</message>",
 		xmlEscape(chat.Remote), xmlEscape(chat.Type), xmlEscape(chat.Text))
 }
 
@@ -787,6 +799,11 @@ type bindBind struct {
 	Jid      string `xml:"jid"`
 }
 
+type clientMessageCorrect struct {
+	XMLName  xml.Name `xml:"urn:xmpp:message-correct:0 replace"`
+	ID       string   `xml:"id,attr"`
+}
+
 // RFC 3921  B.1  jabber:client
 type clientMessage struct {
 	XMLName xml.Name `xml:"jabber:client message"`
@@ -799,6 +816,7 @@ type clientMessage struct {
 	Subject string `xml:"subject"`
 	Body    string `xml:"body"`
 	Thread  string `xml:"thread"`
+	ReplaceID clientMessageCorrect
 
 	// Any hasn't matched element
 	Other []XMLElement `xml:",any"`

vendor/manifest

@@ -402,7 +402,7 @@
 			"importpath": "github.com/matterbridge/go-xmpp",
 			"repository": "https://github.com/matterbridge/go-xmpp",
 			"vcs": "git",
-			"revision": "3cceb718219057817b66c4bb55673f5f417c0bff",
+			"revision": "cd19799fba91790ac733655c546bce2107e5b838",
 			"branch": "work",
 			"notests": true
 		},
@@ -601,7 +601,7 @@
 			"repository": "https://github.com/nlopes/slack",
 			"vcs": "git",
 			"revision": "107290b5bbaf3e634833346bb4ff389b1c782bc7",
-			"branch": "master",
+			"branch": "HEAD",
 			"notests": true
 		},
 		{