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Code Releases Activity

Clean up code and strengthening (slack) (#519)

Browse Source 
Changes include:
- Refactor of strings into package-wide constants.
- Predeclaration of regexps to be instantiated at package load time.
- Checking of unchecked errors.
- Structural changes:
  - Adding verifications to type-casting code.
  - Remove unnecessary 'len(X) > 0' checks before iterating over X.
  - Remove unnecessary 'else' clause after 'if' with 'return'.
  - Unexporting of public fields of Bridge struct.
- Formatting:
  - One-field-per-line struct definitions.
This commit is contained in:
Duco van Amstel 2018-10-13 00:02:14 +01:00 committed by Wim
parent 3dd4ec57ff
commit 498377a230
3 changed files with 243 additions and 172 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

128
bridge/slack/handlers.go
View File

@ -14,7 +14,7 @@ import (
func (b *Bslack) handleSlack() { func (b *Bslack) handleSlack() {
messages := make(chan *config.Message) messages := make(chan *config.Message)
if b.GetString("WebhookBindAddress") != "" { if b.GetString(incomingWebhookConfig) != "" {
b.Log.Debugf("Choosing webhooks based receiving") b.Log.Debugf("Choosing webhooks based receiving")
go b.handleMatterHook(messages) go b.handleMatterHook(messages)
} else { } else {
@ -43,7 +43,7 @@ func (b *Bslack) handleSlack() {
func (b *Bslack) handleSlackClient(messages chan *config.Message) { func (b *Bslack) handleSlackClient(messages chan *config.Message) {
for msg := range b.rtm.IncomingEvents { for msg := range b.rtm.IncomingEvents {
if msg.Type != "user_typing" && msg.Type != "latency_report" { if msg.Type != sUserTyping && msg.Type != sLatencyReport {
b.Log.Debugf("== Receiving event %#v", msg.Data) b.Log.Debugf("== Receiving event %#v", msg.Data)
} }
switch ev := msg.Data.(type) { switch ev := msg.Data.(type) {
@ -61,17 +61,25 @@ func (b *Bslack) handleSlackClient(messages chan *config.Message) {
case *slack.OutgoingErrorEvent: case *slack.OutgoingErrorEvent:
b.Log.Debugf("%#v", ev.Error()) b.Log.Debugf("%#v", ev.Error())
case *slack.ChannelJoinedEvent: case *slack.ChannelJoinedEvent:
b.Users, _ = b.sc.GetUsers() var err error
b.Usergroups, _ = b.sc.GetUserGroups() b.users, err = b.sc.GetUsers()
if err != nil {
b.Log.Errorf("Could not reload users: %#v", err)
}
case *slack.ConnectedEvent: case *slack.ConnectedEvent:
var err error var err error
b.channels, _, err = b.sc.GetConversations(&slack.GetConversationsParameters{Limit: 1000, Types: []string{"public_channel,private_channel,mpim,im"}}) b.channels, _, err = b.sc.GetConversations(&slack.GetConversationsParameters{
Limit: 1000,
Types: []string{"public_channel,private_channel,mpim,im"},
})
if err != nil { if err != nil {
b.Log.Errorf("Channel list failed: %#v", err) b.Log.Errorf("Channel list failed: %#v", err)
} }
b.si = ev.Info b.si = ev.Info
b.Users, _ = b.sc.GetUsers() b.users, err = b.sc.GetUsers()
b.Usergroups, _ = b.sc.GetUserGroups() if err != nil {
b.Log.Errorf("Could not reload users: %#v", err)
}
case *slack.InvalidAuthEvent: case *slack.InvalidAuthEvent:
b.Log.Fatalf("Invalid Token %#v", ev) b.Log.Fatalf("Invalid Token %#v", ev)
case *slack.ConnectionErrorEvent: case *slack.ConnectionErrorEvent:
@ -88,16 +96,22 @@ func (b *Bslack) handleMatterHook(messages chan *config.Message) {
if message.UserName == "slackbot" { if message.UserName == "slackbot" {
continue continue
} }
messages <- &config.Message{Username: message.UserName, Text: message.Text, Channel: message.ChannelName} messages <- &config.Message{
Username: message.UserName,
Text: message.Text,
Channel: message.ChannelName,
}
} }
} }
var commentRE = regexp.MustCompile(`.*?commented: (.*)`)
// handleDownloadFile handles file download // handleDownloadFile handles file download
func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File) error { func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File) error {
// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra // if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
// limit to 1MB for now // limit to 1MB for now
comment := "" comment := ""
results := regexp.MustCompile(`.*?commented: (.*)`).FindAllStringSubmatch(rmsg.Text, -1) results := commentRE.FindAllStringSubmatch(rmsg.Text, -1)
if len(results) > 0 { if len(results) > 0 {
comment = results[0][1] comment = results[0][1]
} }
@ -106,7 +120,7 @@ func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File) erro
return err return err
} }
// actually download the file // actually download the file
data, err := helper.DownloadFileAuth(file.URLPrivateDownload, "Bearer "+b.GetString("Token")) data, err := helper.DownloadFileAuth(file.URLPrivateDownload, "Bearer "+b.GetString(tokenConfig))
if err != nil { if err != nil {
return fmt.Errorf("download %s failed %#v", file.URLPrivateDownload, err) return fmt.Errorf("download %s failed %#v", file.URLPrivateDownload, err)
} }
@ -116,7 +130,7 @@ func (b *Bslack) handleDownloadFile(rmsg *config.Message, file *slack.File) erro
} }
// handleUploadFile handles native upload of files // handleUploadFile handles native upload of files
func (b *Bslack) handleUploadFile(msg *config.Message, channelID string) (string, error) { func (b *Bslack) handleUploadFile(msg *config.Message, channelID string) {
for _, f := range msg.Extra["file"] { for _, f := range msg.Extra["file"] {
fi := f.(config.FileInfo) fi := f.(config.FileInfo)
if msg.Text == fi.Comment { if msg.Text == fi.Comment {
@ -141,37 +155,46 @@ func (b *Bslack) handleUploadFile(msg *config.Message, channelID string) (string
b.Log.Errorf("uploadfile %#v", err) b.Log.Errorf("uploadfile %#v", err)
} }
} }
return "", nil
} }
// handleMessageEvent handles the message events // handleMessageEvent handles the message events
func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, error) { func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, error) {
var err error
// update the userlist on a channel_join // update the userlist on a channel_join
if ev.SubType == "channel_join" { if ev.SubType == sChannelJoin {
b.Users, _ = b.sc.GetUsers() if b.users, err = b.sc.GetUsers(); err != nil {
return nil, err
}
} }
// Edit message // Edit message
if !b.GetBool("EditDisable") && ev.SubMessage != nil && ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp { if !b.GetBool(editDisableConfig) && ev.SubMessage != nil && ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp {
b.Log.Debugf("SubMessage %#v", ev.SubMessage) b.Log.Debugf("SubMessage %#v", ev.SubMessage)
ev.User = ev.SubMessage.User ev.User = ev.SubMessage.User
ev.Text = ev.SubMessage.Text + b.GetString("EditSuffix") ev.Text = ev.SubMessage.Text + b.GetString(editSuffixConfig)
} }
// use our own func because rtm.GetChannelInfo doesn't work for private channels // use our own func because rtm.GetChannelInfo doesn't work for private channels
channel, err := b.getChannelByID(ev.Channel) channelInfo, err := b.getChannelByID(ev.Channel)
if err != nil { if err != nil {
return nil, err return nil, err
} }
rmsg := config.Message{Text: ev.Text, Channel: channel.Name, Account: b.Account, ID: "slack " + ev.Timestamp, Extra: make(map[string][]interface{})} rmsg := config.Message{
Text: ev.Text,
Channel: channelInfo.Name,
Account: b.Account,
ID: "slack " + ev.Timestamp,
Extra: map[string][]interface{}{},
}
if b.UseChannelID { if b.useChannelID {
rmsg.Channel = "ID:" + channel.ID rmsg.Channel = "ID:" + channelInfo.ID
} }
// find the user id and name // find the user id and name
if ev.User != "" && ev.SubType != messageDeleted && ev.SubType != "file_comment" { if ev.User != "" && ev.SubType != sMessageDeleted && ev.SubType != sFileComment {
user, err := b.rtm.GetUserInfo(ev.User) user, err := b.rtm.GetUserInfo(ev.User)
if err != nil { if err != nil {
return nil, err return nil, err
@ -198,7 +221,7 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
} }
// when using webhookURL we can't check if it's our webhook or not for now // when using webhookURL we can't check if it's our webhook or not for now
if rmsg.Username == "" && ev.BotID != "" && b.GetString("WebhookURL") == "" { if rmsg.Username == "" && ev.BotID != "" && b.GetString(outgoingWebhookConfig) == "" {
bot, err := b.rtm.GetBotInfo(ev.BotID) bot, err := b.rtm.GetBotInfo(ev.BotID)
if err != nil { if err != nil {
return nil, err return nil, err
@ -226,18 +249,18 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
} }
// file comments are set by the system (because there is no username given) // file comments are set by the system (because there is no username given)
if ev.SubType == "file_comment" { if ev.SubType == sFileComment {
rmsg.Username = "system" rmsg.Username = sSystemUser
} }
// do we have a /me action // do we have a /me action
if ev.SubType == "me_message" { if ev.SubType == sMeMessage {
rmsg.Event = config.EVENT_USER_ACTION rmsg.Event = config.EVENT_USER_ACTION
} }
// Handle join/leave // Handle join/leave
if ev.SubType == "channel_leave" || ev.SubType == "channel_join" { if ev.SubType == sChannelLeave || ev.SubType == sChannelJoin {
rmsg.Username = "system" rmsg.Username = sSystemUser
rmsg.Event = config.EVENT_JOIN_LEAVE rmsg.Event = config.EVENT_JOIN_LEAVE
} }
@ -247,19 +270,19 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
} }
// deleted message event // deleted message event
if ev.SubType == messageDeleted { if ev.SubType == sMessageDeleted {
rmsg.Text = config.EVENT_MSG_DELETE rmsg.Text = config.EVENT_MSG_DELETE
rmsg.Event = config.EVENT_MSG_DELETE rmsg.Event = config.EVENT_MSG_DELETE
rmsg.ID = "slack " + ev.DeletedTimestamp rmsg.ID = "slack " + ev.DeletedTimestamp
} }
// topic change event // topic change event
if ev.SubType == "channel_topic" || ev.SubType == "channel_purpose" { if ev.SubType == sChannelTopic || ev.SubType == sChannelPurpose {
rmsg.Event = config.EVENT_TOPIC_CHANGE rmsg.Event = config.EVENT_TOPIC_CHANGE
} }
// Only deleted messages can have a empty username and text // Only deleted messages can have a empty username and text
if (rmsg.Text == "" || rmsg.Username == "") && ev.SubType != messageDeleted && len(ev.Files) == 0 { if (rmsg.Text == "" || rmsg.Username == "") && ev.SubType != sMessageDeleted && len(ev.Files) == 0 {
// this is probably a webhook we couldn't resolve // this is probably a webhook we couldn't resolve
if ev.BotID != "" { if ev.BotID != "" {
return nil, fmt.Errorf("probably an incoming webhook we couldn't resolve (maybe ourselves)") return nil, fmt.Errorf("probably an incoming webhook we couldn't resolve (maybe ourselves)")
@ -269,16 +292,14 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
// save the attachments, so that we can send them to other slack (compatible) bridges // save the attachments, so that we can send them to other slack (compatible) bridges
if len(ev.Attachments) > 0 { if len(ev.Attachments) > 0 {
rmsg.Extra["slack_attachment"] = append(rmsg.Extra["slack_attachment"], ev.Attachments) rmsg.Extra[sSlackAttachment] = append(rmsg.Extra[sSlackAttachment], ev.Attachments)
} }
// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra // if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
if len(ev.Files) > 0 { for _, f := range ev.Files {
for _, f := range ev.Files { err := b.handleDownloadFile(&rmsg, &f)
err := b.handleDownloadFile(&rmsg, &f) if err != nil {
if err != nil { b.Log.Errorf("download failed: %s", err)
b.Log.Errorf("download failed: %s", err)
}
} }
} }
@ -287,17 +308,17 @@ func (b *Bslack) handleMessageEvent(ev *slack.MessageEvent) (*config.Message, er
// skipMessageEvent skips event that need to be skipped :-) // skipMessageEvent skips event that need to be skipped :-)
func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool { func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool {
if ev.SubType == "channel_leave" || ev.SubType == "channel_join" { if ev.SubType == sChannelLeave || ev.SubType == sChannelJoin {
return b.GetBool("nosendjoinpart") return b.GetBool(noSendJoinConfig)
} }
// ignore pinned items // ignore pinned items
if ev.SubType == "pinned_item" || ev.SubType == "unpinned_item" { if ev.SubType == sPinnedItem || ev.SubType == sUnpinnedItem {
return true return true
} }
// do not send messages from ourself // do not send messages from ourself
if b.GetString("WebhookURL") == "" && b.GetString("WebhookBindAddress") == "" && ev.Username == b.si.User.Name { if b.GetString(outgoingWebhookConfig) == "" && b.GetString(incomingWebhookConfig) == "" && ev.Username == b.si.User.Name {
return true return true
} }
@ -308,7 +329,7 @@ func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool {
} }
} }
if !b.GetBool("EditDisable") && ev.SubMessage != nil && ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp { if !b.GetBool(editDisableConfig) && ev.SubMessage != nil && ev.SubMessage.ThreadTimestamp != ev.SubMessage.Timestamp {
// it seems ev.SubMessage.Edited == nil when slack unfurls // it seems ev.SubMessage.Edited == nil when slack unfurls
// do not forward these messages #266 // do not forward these messages #266
if ev.SubMessage.Edited == nil { if ev.SubMessage.Edited == nil {
@ -316,21 +337,16 @@ func (b *Bslack) skipMessageEvent(ev *slack.MessageEvent) bool {
} }
} }
if len(ev.Files) > 0 { for _, f := range ev.Files {
for _, f := range ev.Files { // if the file is in the cache and isn't older then a minute, skip it
// if the file is in the cache and isn't older then a minute, skip it if ts, ok := b.cache.Get("file" + f.ID); ok && time.Since(ts.(time.Time)) < time.Minute {
if ts, ok := b.cache.Get("file" + f.ID); ok && time.Since(ts.(time.Time)) < time.Minute { b.Log.Debugf("Not downloading file id %s which we uploaded", f.ID)
b.Log.Debugf("Not downloading file id %s which we uploaded", f.ID) return true
return true } else if ts, ok := b.cache.Get("filename" + f.Name); ok && time.Since(ts.(time.Time)) < 10*time.Second {
} else { b.Log.Debugf("Not downloading file name %s which we uploaded", f.Name)
if ts, ok := b.cache.Get("filename" + f.Name); ok && time.Since(ts.(time.Time)) < time.Second*10 { return true
b.Log.Debugf("Not downloading file name %s which we uploaded", f.Name)
return true
} else {
b.Log.Debugf("Not skipping %s %s", f.Name, time.Now().String())
}
}
} }
b.Log.Debugf("Not skipping %s %s", f.Name, time.Now().String())
} }
return false return false

73
bridge/slack/helpers.go
View File

@ -8,8 +8,8 @@ import (
"github.com/nlopes/slack" "github.com/nlopes/slack"
) )
func (b *Bslack) userName(id string) string { func (b *Bslack) getUsername(id string) string {
for _, u := range b.Users { for _, u := range b.users {
if u.ID == id { if u.ID == id {
if u.Profile.DisplayName != "" { if u.Profile.DisplayName != "" {
return u.Profile.DisplayName return u.Profile.DisplayName
@ -17,22 +17,26 @@ func (b *Bslack) userName(id string) string {
return u.Name return u.Name
} }
} }
b.Log.Warnf("Could not find user with ID '%s'", id)
return "" return ""
} }
func (b *Bslack) getAvatar(userid string) string { func (b *Bslack) getAvatar(userid string) string {
var avatar string for _, u := range b.users {
if b.Users != nil { if userid == u.ID {
for _, u := range b.Users { return u.Profile.Image48
if userid == u.ID {
return u.Profile.Image48
}
} }
} }
return avatar 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) { func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
if b.channels == nil { if b.channels == nil {
return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, name) return nil, fmt.Errorf("%s: channel %s not found (no channels found)", b.Account, name)
@ -44,7 +48,6 @@ func (b *Bslack) getChannelByName(name string) (*slack.Channel, error) {
} }
return nil, fmt.Errorf("%s: channel %s not found", b.Account, name) return nil, fmt.Errorf("%s: channel %s not found", b.Account, name)
} }
*/
func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) { func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
if b.channels == nil { if b.channels == nil {
@ -58,45 +61,40 @@ func (b *Bslack) getChannelByID(ID string) (*slack.Channel, error) {
return nil, fmt.Errorf("%s: channel %s not found", b.Account, ID) return nil, fmt.Errorf("%s: channel %s not found", b.Account, ID)
} }
func (b *Bslack) getChannelID(name string) string { var (
idcheck := strings.Split(name, "ID:") mentionRE = regexp.MustCompile(`<@([a-zA-Z0-9]+)>`)
if len(idcheck) > 1 { channelRE = regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`)
return idcheck[1] variableRE = regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`)
} urlRE = regexp.MustCompile(`<(.*?)(\|.*?)?>`)
for _, channel := range b.channels { )
if channel.Name == name {
return channel.ID
}
}
return ""
}
// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users // @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
func (b *Bslack) replaceMention(text string) string { func (b *Bslack) replaceMention(text string) string {
results := regexp.MustCompile(`<@([a-zA-Z0-9]+)>`).FindAllStringSubmatch(text, -1) replaceFunc := func(match string) string {
for _, r := range results { userID := strings.Trim(match, "@<>")
text = strings.Replace(text, "<@"+r[1]+">", "@"+b.userName(r[1]), -1) if username := b.getUsername(userID); userID != "" {
return "@" + username
}
return match
} }
return text return mentionRE.ReplaceAllStringFunc(text, replaceFunc)
} }
// @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users // @see https://api.slack.com/docs/message-formatting#linking_to_channels_and_users
func (b *Bslack) replaceChannel(text string) string { func (b *Bslack) replaceChannel(text string) string {
results := regexp.MustCompile(`<#[a-zA-Z0-9]+\|(.+?)>`).FindAllStringSubmatch(text, -1) for _, r := range channelRE.FindAllStringSubmatch(text, -1) {
for _, r := range results { text = strings.Replace(text, r[0], "#"+r[1], 1)
text = strings.Replace(text, r[0], "#"+r[1], -1)
} }
return text return text
} }
// @see https://api.slack.com/docs/message-formatting#variables // @see https://api.slack.com/docs/message-formatting#variables
func (b *Bslack) replaceVariable(text string) string { func (b *Bslack) replaceVariable(text string) string {
results := regexp.MustCompile(`<!((?:subteam\^)?[a-zA-Z0-9]+)(?:\|@?(.+?))?>`).FindAllStringSubmatch(text, -1) for _, r := range variableRE.FindAllStringSubmatch(text, -1) {
for _, r := range results {
if r[2] != "" { if r[2] != "" {
text = strings.Replace(text, r[0], "@"+r[2], -1) text = strings.Replace(text, r[0], "@"+r[2], 1)
} else { } else {
text = strings.Replace(text, r[0], "@"+r[1], -1) text = strings.Replace(text, r[0], "@"+r[1], 1)
} }
} }
return text return text
@ -104,12 +102,11 @@ func (b *Bslack) replaceVariable(text string) string {
// @see https://api.slack.com/docs/message-formatting#linking_to_urls // @see https://api.slack.com/docs/message-formatting#linking_to_urls
func (b *Bslack) replaceURL(text string) string { func (b *Bslack) replaceURL(text string) string {
results := regexp.MustCompile(`<(.*?)(\|.*?)?>`).FindAllStringSubmatch(text, -1) for _, r := range urlRE.FindAllStringSubmatch(text, -1) {
for _, r := range results {
if len(strings.TrimSpace(r[2])) == 1 { // A display text separator was found, but the text was blank 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) text = strings.Replace(text, r[0], "", 1)
} else { } else {
text = strings.Replace(text, r[0], r[1], -1) text = strings.Replace(text, r[0], r[1], 1)
} }
} }
return text return text

214
bridge/slack/slack.go
View File

@ -2,6 +2,7 @@ package bslack
import ( import (
"errors" "errors"
"fmt"
"strings" "strings"
"sync" "sync"
@ -18,22 +19,52 @@ type Bslack struct {
mh *matterhook.Client mh *matterhook.Client
sc *slack.Client sc *slack.Client
rtm *slack.RTM rtm *slack.RTM
Users []slack.User users []slack.User
Usergroups []slack.UserGroup
si *slack.Info si *slack.Info
channels []slack.Channel channels []slack.Channel
cache *lru.Cache cache *lru.Cache
UseChannelID bool useChannelID bool
uuid string uuid string
*bridge.Config *bridge.Config
sync.RWMutex sync.RWMutex
} }
const messageDeleted = "message_deleted" const (
sChannelJoin = "channel_join"
sChannelLeave = "channel_leave"
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"
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 { func New(cfg *bridge.Config) bridge.Bridger {
b := &Bslack{Config: cfg, uuid: xid.New().String()} newCache, err := lru.New(5000)
b.cache, _ = 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,
}
return b return b
} }
@ -44,50 +75,54 @@ func (b *Bslack) Command(cmd string) string {
func (b *Bslack) Connect() error { func (b *Bslack) Connect() error {
b.RLock() b.RLock()
defer b.RUnlock() defer b.RUnlock()
if b.GetString("WebhookBindAddress") != "" { if b.GetString(incomingWebhookConfig) != "" {
if b.GetString("WebhookURL") != "" { if b.GetString(outgoingWebhookConfig) != "" {
b.Log.Info("Connecting using webhookurl (sending) and webhookbindaddress (receiving)") b.Log.Info("Connecting using webhookurl (sending) and webhookbindaddress (receiving)")
b.mh = matterhook.New(b.GetString("WebhookURL"), b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"), InsecureSkipVerify: b.GetBool(skipTLSConfig),
BindAddress: b.GetString("WebhookBindAddress")}) BindAddress: b.GetString(incomingWebhookConfig),
} else if b.GetString("Token") != "" { })
} else if b.GetString(tokenConfig) != "" {
b.Log.Info("Connecting using token (sending)") b.Log.Info("Connecting using token (sending)")
b.sc = slack.New(b.GetString("Token")) b.sc = slack.New(b.GetString(tokenConfig))
b.rtm = b.sc.NewRTM() b.rtm = b.sc.NewRTM()
go b.rtm.ManageConnection() go b.rtm.ManageConnection()
b.Log.Info("Connecting using webhookbindaddress (receiving)") b.Log.Info("Connecting using webhookbindaddress (receiving)")
b.mh = matterhook.New(b.GetString("WebhookURL"), b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"), InsecureSkipVerify: b.GetBool(skipTLSConfig),
BindAddress: b.GetString("WebhookBindAddress")}) BindAddress: b.GetString(incomingWebhookConfig),
})
} else { } else {
b.Log.Info("Connecting using webhookbindaddress (receiving)") b.Log.Info("Connecting using webhookbindaddress (receiving)")
b.mh = matterhook.New(b.GetString("WebhookURL"), b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"), InsecureSkipVerify: b.GetBool(skipTLSConfig),
BindAddress: b.GetString("WebhookBindAddress")}) BindAddress: b.GetString(incomingWebhookConfig),
})
} }
go b.handleSlack() go b.handleSlack()
return nil return nil
} }
if b.GetString("WebhookURL") != "" { if b.GetString(outgoingWebhookConfig) != "" {
b.Log.Info("Connecting using webhookurl (sending)") b.Log.Info("Connecting using webhookurl (sending)")
b.mh = matterhook.New(b.GetString("WebhookURL"), b.mh = matterhook.New(b.GetString(outgoingWebhookConfig), matterhook.Config{
matterhook.Config{InsecureSkipVerify: b.GetBool("SkipTLSVerify"), InsecureSkipVerify: b.GetBool(skipTLSConfig),
DisableServer: true}) DisableServer: true,
if b.GetString("Token") != "" { })
if b.GetString(tokenConfig) != "" {
b.Log.Info("Connecting using token (receiving)") b.Log.Info("Connecting using token (receiving)")
b.sc = slack.New(b.GetString("Token")) b.sc = slack.New(b.GetString(tokenConfig))
b.rtm = b.sc.NewRTM() b.rtm = b.sc.NewRTM()
go b.rtm.ManageConnection() go b.rtm.ManageConnection()
go b.handleSlack() go b.handleSlack()
} }
} else if b.GetString("Token") != "" { } else if b.GetString(tokenConfig) != "" {
b.Log.Info("Connecting using token (sending and receiving)") b.Log.Info("Connecting using token (sending and receiving)")
b.sc = slack.New(b.GetString("Token")) b.sc = slack.New(b.GetString(tokenConfig))
b.rtm = b.sc.NewRTM() b.rtm = b.sc.NewRTM()
go b.rtm.ManageConnection() go b.rtm.ManageConnection()
go b.handleSlack() go b.handleSlack()
} }
if b.GetString("WebhookBindAddress") == "" && b.GetString("WebhookURL") == "" && b.GetString("Token") == "" { 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 errors.New("no connection method found. See that you have WebhookBindAddress, WebhookURL or Token configured")
} }
return nil return nil
@ -101,7 +136,7 @@ func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
// use ID:channelid and resolve it to the actual name // use ID:channelid and resolve it to the actual name
idcheck := strings.Split(channel.Name, "ID:") idcheck := strings.Split(channel.Name, "ID:")
if len(idcheck) > 1 { if len(idcheck) > 1 {
b.UseChannelID = true b.useChannelID = true
ch, err := b.sc.GetChannelInfo(idcheck[1]) ch, err := b.sc.GetChannelInfo(idcheck[1])
if err != nil { if err != nil {
return err return err
@ -114,7 +149,7 @@ func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
// we can only join channels using the API // we can only join channels using the API
if b.sc != nil { if b.sc != nil {
if strings.HasPrefix(b.GetString("Token"), "xoxb") { if strings.HasPrefix(b.GetString(tokenConfig), "xoxb") {
// TODO check if bot has already joined channel // TODO check if bot has already joined channel
return nil return nil
} }
@ -141,11 +176,14 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
} }
// Use webhook to send the message // Use webhook to send the message
if b.GetString("WebhookURL") != "" { if b.GetString(outgoingWebhookConfig) != "" {
return b.sendWebhook(msg) return b.sendWebhook(msg)
} }
channelID := b.getChannelID(msg.Channel) channelInfo, err := b.getChannel(msg.Channel)
if err != nil {
return "", fmt.Errorf("could not send message: %v", err)
}
// Delete message // Delete message
if msg.Event == config.EVENT_MSG_DELETE { if msg.Event == config.EVENT_MSG_DELETE {
@ -155,7 +193,7 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
} }
// we get a "slack <ID>", split it // we get a "slack <ID>", split it
ts := strings.Fields(msg.ID) ts := strings.Fields(msg.ID)
_, _, err := b.sc.DeleteMessage(channelID, ts[1]) _, _, err = b.sc.DeleteMessage(channelInfo.ID, ts[1])
if err != nil { if err != nil {
return msg.ID, err return msg.ID, err
} }
@ -163,14 +201,14 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
} }
// Prepend nick if configured // Prepend nick if configured
if b.GetBool("PrefixMessagesWithNick") { if b.GetBool(useNickPrefixConfig) {
msg.Text = msg.Username + msg.Text msg.Text = msg.Username + msg.Text
} }
// Edit message if we have an ID // Edit message if we have an ID
if msg.ID != "" { if msg.ID != "" {
ts := strings.Fields(msg.ID) ts := strings.Fields(msg.ID)
_, _, _, err := b.sc.UpdateMessage(channelID, ts[1], msg.Text) _, _, _, err = b.sc.UpdateMessage(channelInfo.ID, ts[1], msg.Text)
if err != nil { if err != nil {
return msg.ID, err return msg.ID, err
} }
@ -179,12 +217,12 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
// create slack new post parameters // create slack new post parameters
np := slack.NewPostMessageParameters() np := slack.NewPostMessageParameters()
if b.GetBool("PrefixMessagesWithNick") { if b.GetBool(useNickPrefixConfig) {
np.AsUser = true np.AsUser = true
} }
np.Username = msg.Username np.Username = msg.Username
np.LinkNames = 1 // replace mentions np.LinkNames = 1 // replace mentions
np.IconURL = config.GetIconURL(&msg, b.GetString("iconurl")) np.IconURL = config.GetIconURL(&msg, b.GetString(iconURLConfig))
if msg.Avatar != "" { if msg.Avatar != "" {
np.IconURL = msg.Avatar np.IconURL = msg.Avatar
} }
@ -193,8 +231,8 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
// add file attachments // add file attachments
np.Attachments = append(np.Attachments, b.createAttach(msg.Extra)...) np.Attachments = append(np.Attachments, b.createAttach(msg.Extra)...)
// add slack attachments (from another slack bridge) // add slack attachments (from another slack bridge)
if len(msg.Extra["slack_attachment"]) > 0 { if msg.Extra != nil {
for _, attach := range msg.Extra["slack_attachment"] { for _, attach := range msg.Extra[sSlackAttachment] {
np.Attachments = append(np.Attachments, attach.([]slack.Attachment)...) np.Attachments = append(np.Attachments, attach.([]slack.Attachment)...)
} }
} }
@ -202,16 +240,17 @@ func (b *Bslack) Send(msg config.Message) (string, error) {
// Upload a file if it exists // Upload a file if it exists
if msg.Extra != nil { if msg.Extra != nil {
for _, rmsg := range helper.HandleExtra(&msg, b.General) { for _, rmsg := range helper.HandleExtra(&msg, b.General) {
b.sc.PostMessage(channelID, rmsg.Username+rmsg.Text, np) _, _, err = b.sc.PostMessage(channelInfo.ID, rmsg.Username+rmsg.Text, np)
} if err != nil {
// check if we have files to upload (from slack, telegram or mattermost) b.Log.Error(err)
if len(msg.Extra["file"]) > 0 { }
b.handleUploadFile(&msg, channelID)
} }
// Upload files if necessary (from Slack, Telegram or Mattermost).
b.handleUploadFile(&msg, channelInfo.ID)
} }
// Post normal message // Post normal message
_, id, err := b.sc.PostMessage(channelID, msg.Text, np) _, id, err := b.sc.PostMessage(channelInfo.ID, msg.Text, np)
if err != nil { if err != nil {
return "", err return "", err
} }
@ -223,26 +262,36 @@ func (b *Bslack) Reload(cfg *bridge.Config) (string, error) {
} }
func (b *Bslack) createAttach(extra map[string][]interface{}) []slack.Attachment { func (b *Bslack) createAttach(extra map[string][]interface{}) []slack.Attachment {
var attachs []slack.Attachment var attachements []slack.Attachment
for _, v := range extra["attachments"] { for _, v := range extra["attachments"] {
entry := v.(map[string]interface{}) entry := v.(map[string]interface{})
s := slack.Attachment{} s := slack.Attachment{
s.Fallback = entry["fallback"].(string) Fallback: extractStringField(entry, "fallback"),
s.Color = entry["color"].(string) Color: extractStringField(entry, "color"),
s.Pretext = entry["pretext"].(string) Pretext: extractStringField(entry, "pretext"),
s.AuthorName = entry["author_name"].(string) AuthorName: extractStringField(entry, "author_name"),
s.AuthorLink = entry["author_link"].(string) AuthorLink: extractStringField(entry, "author_link"),
s.AuthorIcon = entry["author_icon"].(string) AuthorIcon: extractStringField(entry, "author_icon"),
s.Title = entry["title"].(string) Title: extractStringField(entry, "title"),
s.TitleLink = entry["title_link"].(string) TitleLink: extractStringField(entry, "title_link"),
s.Text = entry["text"].(string) Text: extractStringField(entry, "text"),
s.ImageURL = entry["image_url"].(string) ImageURL: extractStringField(entry, "image_url"),
s.ThumbURL = entry["thumb_url"].(string) ThumbURL: extractStringField(entry, "thumb_url"),
s.Footer = entry["footer"].(string) Footer: extractStringField(entry, "footer"),
s.FooterIcon = entry["footer_icon"].(string) FooterIcon: extractStringField(entry, "footer_icon"),
attachs = append(attachs, s) }
attachements = append(attachements, s)
} }
return attachs 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 ""
} }
// sendWebhook uses the configured WebhookURL to send the message // sendWebhook uses the configured WebhookURL to send the message
@ -252,39 +301,48 @@ func (b *Bslack) sendWebhook(msg config.Message) (string, error) {
return "", nil return "", nil
} }
if b.GetBool("PrefixMessagesWithNick") { if b.GetBool(useNickPrefixConfig) {
msg.Text = msg.Username + msg.Text msg.Text = msg.Username + msg.Text
} }
if msg.Extra != nil { if msg.Extra != nil {
// this sends a message only if we received a config.EVENT_FILE_FAILURE_SIZE // this sends a message only if we received a config.EVENT_FILE_FAILURE_SIZE
for _, rmsg := range helper.HandleExtra(&msg, b.General) { for _, rmsg := range helper.HandleExtra(&msg, b.General) {
iconURL := config.GetIconURL(&rmsg, b.GetString("iconurl")) iconURL := config.GetIconURL(&rmsg, b.GetString(iconURLConfig))
matterMessage := matterhook.OMessage{IconURL: iconURL, Channel: msg.Channel, UserName: rmsg.Username, Text: rmsg.Text} matterMessage := matterhook.OMessage{
b.mh.Send(matterMessage) IconURL: iconURL,
Channel: msg.Channel,
UserName: rmsg.Username,
Text: rmsg.Text,
}
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 // webhook doesn't support file uploads, so we add the url manually
if len(msg.Extra["file"]) > 0 { for _, f := range msg.Extra["file"] {
for _, f := range msg.Extra["file"] { fi := f.(config.FileInfo)
fi := f.(config.FileInfo) if fi.URL != "" {
if fi.URL != "" { msg.Text += " " + fi.URL
msg.Text += " " + fi.URL
}
} }
} }
} }
// if we have native slack_attachments add them // if we have native slack_attachments add them
var attachs []slack.Attachment var attachs []slack.Attachment
if len(msg.Extra["slack_attachment"]) > 0 { for _, attach := range msg.Extra[sSlackAttachment] {
for _, attach := range msg.Extra["slack_attachment"] { attachs = append(attachs, attach.([]slack.Attachment)...)
attachs = append(attachs, attach.([]slack.Attachment)...)
}
} }
iconURL := config.GetIconURL(&msg, b.GetString("iconurl")) iconURL := config.GetIconURL(&msg, b.GetString(iconURLConfig))
matterMessage := matterhook.OMessage{IconURL: iconURL, Attachments: attachs, Channel: msg.Channel, UserName: msg.Username, Text: msg.Text} matterMessage := matterhook.OMessage{
IconURL: iconURL,
Attachments: attachs,
Channel: msg.Channel,
UserName: msg.Username,
Text: msg.Text,
}
if msg.Avatar != "" { if msg.Avatar != "" {
matterMessage.IconURL = msg.Avatar matterMessage.IconURL = msg.Avatar
} }