Sync with mattermost 3.1.0

5 files changed, 224 insertions, 471 deletions

diff --git a/vendor/github.com/42wim/matterbridge-plus/bridge/bridge.go b/vendor/github.com/42wim/matterbridge-plus/bridge/bridge.go
index ebd5456d..ee27a65d 100644
--- a/vendor/github.com/42wim/matterbridge-plus/bridge/bridge.go
+++ b/vendor/github.com/42wim/matterbridge-plus/bridge/bridge.go
@@ -21,15 +21,17 @@ type MMhook struct {
 }
 
 type MMapi struct {
-	mc    *matterclient.MMClient
-	mmMap map[string]string
+	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
+	i              *irc.Connection
+	ircNick        string
+	ircMap         map[string]string
+	names          map[string][]string
+	ircIgnoreNicks []string
 }
 
 type MMMessage struct {
@@ -53,6 +55,8 @@ type FancyLog struct {
 
 var flog FancyLog
 
+const Legacy = "legacy"
+
 func initFLog() {
 	flog.irc = log.WithFields(log.Fields{"module": "irc"})
 	flog.mm = log.WithFields(log.Fields{"module": "mattermost"})
@@ -66,7 +70,9 @@ func NewBridge(name string, config *Config, kind string) *Bridge {
 	b.ircNick = b.Config.IRC.Nick
 	b.ircMap = make(map[string]string)
 	b.MMirc.names = make(map[string][]string)
-	if kind == "legacy" {
+	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
@@ -87,10 +93,14 @@ func NewBridge(name string, config *Config, kind string) *Bridge {
 		}
 		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.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 {
@@ -99,7 +109,9 @@ func NewBridge(name string, config *Config, kind string) *Bridge {
 		}
 		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
 }
@@ -111,37 +123,51 @@ func (b *Bridge) createIRC(name string) *irc.Connection {
 	if b.Config.IRC.Password != "" {
 		i.Password = b.Config.IRC.Password
 	}
-	i.AddCallback("*", b.handleOther)
+	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
-	flog.irc.Info("Joining ", b.Config.IRC.Channel, " as ", b.ircNick)
-	i.Join(b.Config.IRC.Channel)
-	if b.kind == "legacy" {
+	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.Info("Joining ", val.IRCChannel, " as ", b.ircNick)
+			flog.irc.Infof("Joining %s as %s", val.IRCChannel, b.ircNick)
 			i.Join(val.IRCChannel)
 		}
 	} else {
 		for _, val := range b.Config.Channel {
-			flog.irc.Info("Joining ", val.IRC, " as ", b.ircNick)
+			flog.irc.Infof("Joining %s as %s", val.IRC, b.ircNick)
 			i.Join(val.IRC)
 		}
 	}
-	i.AddCallback("PRIVMSG", b.handlePrivMsg)
-	i.AddCallback("CTCP_ACTION", b.handlePrivMsg)
-	if b.Config.Mattermost.ShowJoinPart {
-		i.AddCallback("JOIN", b.handleJoinPart)
-		i.AddCallback("PART", b.handleJoinPart)
-	}
 }
 
 func (b *Bridge) handleIrcBotCommand(event *irc.Event) bool {
@@ -177,6 +203,9 @@ func (b *Bridge) ircNickFormat(nick string) string {
 }
 
 func (b *Bridge) handlePrivMsg(event *irc.Event) {
+	if b.ignoreMessage(event.Nick, event.Message(), "irc") {
+		return
+	}
 	if b.handleIrcBotCommand(event) {
 		return
 	}
@@ -238,81 +267,21 @@ func (b *Bridge) endNames(event *irc.Event) {
 	b.MMirc.names[channel] = nil
 }
 
-func (b *Bridge) handleTopicWhoTime(event *irc.Event) bool {
+func (b *Bridge) handleTopicWhoTime(event *irc.Event) {
 	parts := strings.Split(event.Arguments[2], "!")
-	t_i, err := strconv.ParseInt(event.Arguments[3], 10, 64)
+	t, err := strconv.ParseInt(event.Arguments[3], 10, 64)
 	if err != nil {
 		flog.irc.Errorf("Invalid time stamp: %s", event.Arguments[3])
-		return false
 	}
 	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_i, 0))
-	return true
+	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)
-	switch event.Code {
-	case ircm.RPL_WELCOME:
-		b.handleNewConnection(event)
-	case ircm.RPL_ENDOFNAMES:
-		b.endNames(event)
-	case ircm.RPL_NAMREPLY:
-		b.storeNames(event)
-	case ircm.RPL_ISUPPORT:
-		fallthrough
-	case ircm.RPL_LUSEROP:
-		fallthrough
-	case ircm.RPL_LUSERUNKNOWN:
-		fallthrough
-	case ircm.RPL_LUSERCHANNELS:
-		fallthrough
-	case ircm.RPL_MYINFO:
-		flog.irc.Infof("%s: %s", event.Code, strings.Join(event.Arguments[1:], " "))
-	case ircm.RPL_YOURHOST:
-		fallthrough
-	case ircm.RPL_CREATED:
-		fallthrough
-	case ircm.RPL_STATSDLINE:
-		fallthrough
-	case ircm.RPL_LUSERCLIENT:
-		fallthrough
-	case ircm.RPL_LUSERME:
-		fallthrough
-	case ircm.RPL_LOCALUSERS:
-		fallthrough
-	case ircm.RPL_GLOBALUSERS:
-		fallthrough
-	case ircm.RPL_MOTD:
-		flog.irc.Infof("%s: %s", event.Code, event.Message())
-		// flog.irc.Info(event.Message())
-	case ircm.RPL_TOPIC:
-		flog.irc.Infof("%s: Topic for %s: %s", event.Code, event.Arguments[1], event.Message())
-	case ircm.RPL_TOPICWHOTIME:
-		if !b.handleTopicWhoTime(event) {
-			break
-		}
-	case ircm.MODE:
-		flog.irc.Infof("%s: %s %s", event.Code, event.Arguments[1], event.Arguments[0])
-	case ircm.JOIN:
-		fallthrough
-	case ircm.PING:
-		fallthrough
-	case ircm.PONG:
-		flog.irc.Infof("%s: %s", event.Code, event.Message())
-	case ircm.RPL_ENDOFMOTD:
-	case ircm.RPL_MOTDSTART:
-	case ircm.ERR_NICKNAMEINUSE:
-		flog.irc.Warn(event.Message())
-	case ircm.NOTICE:
-		b.handleNotice(event)
-	default:
-		flog.irc.Infof("UNKNOWN EVENT: %#v", event)
-		return
-	}
 }
 
 func (b *Bridge) Send(nick string, message string, channel string) error {
@@ -327,7 +296,7 @@ func (b *Bridge) SendType(nick string, message string, channel string, mtype str
 			message = nick + " " + message
 		}
 	}
-	if b.kind == "legacy" {
+	if b.kind == Legacy {
 		matterMessage := matterhook.OMessage{IconURL: b.Config.Mattermost.IconURL}
 		matterMessage.Channel = channel
 		matterMessage.UserName = nick
@@ -371,24 +340,34 @@ func (b *Bridge) handleMatterClient(mchan chan *MMMessage) {
 }
 
 func (b *Bridge) handleMatter() {
+	flog.mm.Infof("Choosing Mattermost connection type %s", b.kind)
 	mchan := make(chan *MMMessage)
-	if b.kind == "legacy" {
+	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 + "> "
 		}
-		cmd := strings.Fields(message.Text)[0]
+		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)
+			flog.mm.Info("Received !users from ", message.Username)
 			b.i.SendRaw("NAMES " + b.getIRCChannel(message.Channel))
 			continue
 		case "!gif":
@@ -425,7 +404,7 @@ func (b *Bridge) getMMChannel(ircChannel string) string {
 }
 
 func (b *Bridge) getIRCChannel(channel string) string {
-	if b.kind == "legacy" {
+	if b.kind == Legacy {
 		ircchannel := b.Config.IRC.Channel
 		_, ok := b.Config.Token[channel]
 		if ok {
@@ -439,3 +418,17 @@ func (b *Bridge) getIRCChannel(channel string) string {
 	}
 	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
+}
diff --git a/vendor/github.com/42wim/matterbridge-plus/bridge/config.go b/vendor/github.com/42wim/matterbridge-plus/bridge/config.go
index ca4eb225..f31db98d 100644
--- a/vendor/github.com/42wim/matterbridge-plus/bridge/config.go
+++ b/vendor/github.com/42wim/matterbridge-plus/bridge/config.go
@@ -19,6 +19,7 @@ type Config struct {
 		NickServNick      string
 		NickServPassword  string
 		RemoteNickFormat  string
+		IgnoreNicks       string
 	}
 	Mattermost struct {
 		URL                    string
@@ -37,6 +38,8 @@ type Config struct {
 		Login                  string
 		Password               string
 		RemoteNickFormat       *string
+		IgnoreNicks            string
+		NoTLS                  bool
 	}
 	Token map[string]*struct {
 		IRCChannel string
diff --git a/vendor/github.com/42wim/matterbridge-plus/matterclient/matterclient.go b/vendor/github.com/42wim/matterbridge-plus/matterclient/matterclient.go
index 13faf383..93128220 100644
--- a/vendor/github.com/42wim/matterbridge-plus/matterclient/matterclient.go
+++ b/vendor/github.com/42wim/matterbridge-plus/matterclient/matterclient.go
@@ -1,9 +1,12 @@
 package matterclient
 
 import (
+	"crypto/tls"
 	"errors"
 	log "github.com/Sirupsen/logrus"
 	"net/http"
+	"net/http/cookiejar"
+	"net/url"
 	"strings"
 	"time"
 
@@ -13,11 +16,12 @@ import (
 )
 
 type Credentials struct {
-	Login  string
-	Team   string
-	Pass   string
-	Server string
-	NoTLS  bool
+	Login         string
+	Team          string
+	Pass          string
+	Server        string
+	NoTLS         bool
+	SkipTLSVerify bool
 }
 
 type Message struct {
@@ -33,6 +37,8 @@ type MMClient struct {
 	*Credentials
 	Client       *model.Client
 	WsClient     *websocket.Conn
+	WsQuit       bool
+	WsAway       bool
 	Channels     *model.ChannelList
 	MoreChannels *model.ChannelList
 	User         *model.User
@@ -60,6 +66,9 @@ func (m *MMClient) SetLogLevel(level string) {
 }
 
 func (m *MMClient) Login() error {
+	if m.WsQuit {
+		return nil
+	}
 	b := &backoff.Backoff{
 		Min:    time.Second,
 		Max:    5 * time.Minute,
@@ -73,12 +82,25 @@ func (m *MMClient) Login() error {
 	}
 	// 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(logmsg+" %s %s %s", m.Credentials.Team, m.Credentials.Login, m.Credentials.Server)
-		myinfo, appErr = m.Client.Login(m.Credentials.Login, m.Credentials.Pass)
+		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)
@@ -89,7 +111,7 @@ func (m *MMClient) Login() error {
 				}
 				return errors.New(appErr.Message)
 			}
-			m.log.Debug("LOGIN: %s, reconnecting in %s", appErr, d)
+			m.log.Debugf("LOGIN: %s, reconnecting in %s", appErr, d)
 			time.Sleep(d)
 			logmsg = "retrying login"
 			continue
@@ -98,15 +120,16 @@ func (m *MMClient) Login() error {
 	}
 	// reset timer
 	b.Reset()
-	m.User = myinfo.Data.(*model.User)
 
-	teamdata, _ := m.Client.GetAllTeamListings()
-	teams := teamdata.Data.(map[string]*model.Team)
-	for k, v := range teams {
+	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(k)
+			m.Client.SetTeamId(v.Id)
 			m.Team = v
-			m.log.Debug("GetallTeamListings: found id ", k)
+			m.log.Debugf("GetallTeamListings: found id %s for team %s", v.Id, v.Name)
 			break
 		}
 	}
@@ -119,13 +142,14 @@ func (m *MMClient) Login() error {
 	header := http.Header{}
 	header.Set(model.HEADER_AUTH, "BEARER "+m.Client.AuthToken)
 
-	var WsClient *websocket.Conn
+	m.log.Debug("WsClient: making connection")
 	var err error
 	for {
-		WsClient, _, err = websocket.DefaultDialer.Dial(wsurl, header)
+		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()
-			log.Printf("WSS: %s, reconnecting in %s", err, d)
+			m.log.Debugf("WSS: %s, reconnecting in %s", err, d)
 			time.Sleep(d)
 			continue
 		}
@@ -133,8 +157,6 @@ func (m *MMClient) Login() error {
 	}
 	b.Reset()
 
-	m.WsClient = WsClient
-
 	// populating users
 	m.UpdateUsers()
 
@@ -147,12 +169,19 @@ func (m *MMClient) Login() error {
 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 {
-			log.Println("error:", err)
+			m.log.Error("error:", err)
 			// reconnect
 			m.Login()
 		}
-		//log.Printf("WsReceiver: %#v", rmsg)
+		if rmsg.Action == "ping" {
+			m.handleWsPing()
+			continue
+		}
 		msg := &Message{Raw: &rmsg, Team: m.Credentials.Team}
 		m.parseMessage(msg)
 		m.MessageChan <- msg
@@ -160,6 +189,14 @@ func (m *MMClient) WsReceiver() {
 
 }
 
+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:
@@ -198,7 +235,7 @@ func (m *MMClient) parseActionPost(rmsg *Message) {
 }
 
 func (m *MMClient) UpdateUsers() error {
-	mmusers, _ := m.Client.GetProfiles(m.Client.GetTeamId(), "")
+	mmusers, _ := m.Client.GetProfilesForDirectMessageList(m.Team.Id)
 	m.Users = mmusers.Data.(map[string]*model.User)
 	return nil
 }
@@ -294,29 +331,49 @@ func (m *MMClient) GetPosts(channelId string, limit int) *model.PostList {
 	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
-	log.Printf("updating channelheader %#v, %#v", channelId, header)
+	m.log.Debugf("updating channelheader %#v, %#v", channelId, header)
 	_, err := m.Client.UpdateChannelHeader(data)
 	if err != nil {
-		log.Print(err)
+		log.Error(err)
 	}
 }
 
 func (m *MMClient) UpdateLastViewed(channelId string) {
-	log.Printf("posting lastview %#v", channelId)
+	m.log.Debugf("posting lastview %#v", channelId)
 	_, err := m.Client.UpdateLastViewedAt(channelId)
 	if err != nil {
-		log.Print(err)
+		m.log.Error(err)
 	}
 }
 
 func (m *MMClient) UsernamesInChannel(channelName string) []string {
 	ceiRes, err := m.Client.GetChannelExtraInfo(m.GetChannelId(channelName), 5000, "")
 	if err != nil {
-		log.Errorf("UsernamesInChannel(%s) failed: %s", channelName, err)
+		m.log.Errorf("UsernamesInChannel(%s) failed: %s", channelName, err)
 		return []string{}
 	}
 	extra := ceiRes.Data.(*model.ChannelExtra)
@@ -326,3 +383,59 @@ func (m *MMClient) UsernamesInChannel(channelName string) []string {
 	}
 	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)
+}
diff --git a/vendor/github.com/42wim/matterbridge/matterhook/LICENSE b/vendor/github.com/42wim/matterbridge/matterhook/LICENSE
deleted file mode 100644
index 8f71f43f..00000000
--- a/vendor/github.com/42wim/matterbridge/matterhook/LICENSE
+++ /dev/null
@@ -1,202 +0,0 @@
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-
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-   limitations under the License.
-
diff --git a/vendor/github.com/42wim/matterbridge/matterhook/matterhook.go b/vendor/github.com/42wim/matterbridge/matterhook/matterhook.go
deleted file mode 100644
index 0b023d39..00000000
--- a/vendor/github.com/42wim/matterbridge/matterhook/matterhook.go
+++ /dev/null
@@ -1,154 +0,0 @@
-//Package matterhook provides interaction with mattermost incoming/outgoing webhooks
-package matterhook
-
-import (
-	"bytes"
-	"crypto/tls"
-	"encoding/json"
-	"fmt"
-	"github.com/gorilla/schema"
-	"io"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"strconv"
-)
-
-// 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"`
-}
-
-// IMessage for mattermost outgoing webhook. (received from mattermost)
-type IMessage struct {
-	Token       string `schema:"token"`
-	TeamID      string `schema:"team_id"`
-	TeamDomain  string `schema:"team_domain"`
-	ChannelID   string `schema:"channel_id"`
-	ServiceID   string `schema:"service_id"`
-	ChannelName string `schema:"channel_name"`
-	Timestamp   string `schema:"timestamp"`
-	UserID      string `schema:"user_id"`
-	UserName    string `schema:"user_name"`
-	Text        string `schema:"text"`
-	TriggerWord string `schema:"trigger_word"`
-}
-
-// Client for Mattermost.
-type Client struct {
-	Url        string // URL for incoming webhooks on mattermost.
-	In         chan IMessage
-	Out        chan OMessage
-	httpclient *http.Client
-	Config
-}
-
-// Config for client.
-type Config struct {
-	Port               int    // Port to listen on.
-	BindAddress        string // Address to listen on
-	Token              string // Only allow this token from Mattermost. (Allow everything when empty)
-	InsecureSkipVerify bool   // disable certificate checking
-	DisableServer      bool   // Do not start server for outgoing webhooks from Mattermost.
-}
-
-// New Mattermost client.
-func New(url string, config Config) *Client {
-	c := &Client{Url: url, In: make(chan IMessage), Out: make(chan OMessage), Config: config}
-	if c.Port == 0 {
-		c.Port = 9999
-	}
-	c.BindAddress += ":"
-	tr := &http.Transport{
-		TLSClientConfig: &tls.Config{InsecureSkipVerify: config.InsecureSkipVerify},
-	}
-	c.httpclient = &http.Client{Transport: tr}
-	if !c.DisableServer {
-		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:%v...\n", c.BindAddress, c.Port)
-	if err := http.ListenAndServe((c.BindAddress + strconv.Itoa(c.Port)), 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 := IMessage{}
-	err := r.ParseForm()
-	if err != nil {
-		log.Println(err)
-		http.NotFound(w, r)
-		return
-	}
-	defer r.Body.Close()
-	decoder := schema.NewDecoder()
-	err = decoder.Decode(&msg, r.PostForm)
-	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
-	}
-	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() IMessage {
-	for {
-		select {
-		case msg := <-c.In:
-			return msg
-		}
-	}
-}
-
-// Send sends a msg to mattermost incoming webhooks URL.
-func (c *Client) Send(msg OMessage) error {
-	buf, err := json.Marshal(msg)
-	if err != nil {
-		return err
-	}
-	resp, err := c.httpclient.Post(c.Url, "application/json", bytes.NewReader(buf))
-	if err != nil {
-		return err
-	}
-	defer resp.Body.Close()
-
-	// Read entire body to completion to re-use keep-alive connections.
-	io.Copy(ioutil.Discard, resp.Body)
-
-	if resp.StatusCode != 200 {
-		return fmt.Errorf("unexpected status code: %d", resp.StatusCode)
-	}
-	return nil
-}