Switched to custom discordgo branch

This adds support for the discord category option that can be used
to group channels in. This means we can have multiple channels with
the same name.

We add the option to specify a category in the channel option of a
discord account under [[gateway]]

Besides channel="channel" or channel="ID:channelID", now also
channel="category/channel" can be specified.

This change remains backwards compatible with people that haven't
specified the category and incorporates the fix in #861

.gitignore

@@ -0,0 +1,5 @@
+# Exclude matterbridge binary
+matterbridge
+
+# Exclude configuration file
+matterbridge.toml

.travis.yml

@@ -13,6 +13,7 @@ notifications:
 branches:
   only:
   - master
+  - /.*/
 
 jobs:
   include:
@@ -22,7 +23,7 @@ jobs:
     go: 1.12.x
     env:
     - GO111MODULE=on
-    - GOLANGCI_VERSION="v1.16.0"
+    - GOLANGCI_VERSION="v1.17.1"
   - stage: test
     # Run tests in a combination of Go environments.
     script: ./ci/test.sh

README.md

@@ -48,11 +48,12 @@
    * [API](#API)
  * [Chat with us](#chat-with-us)
  * [Screenshots](https://github.com/42wim/matterbridge/wiki/)
- * [Installing](#installing)
+ * [Installing/upgrading](#installing--upgrading)
    * [Binaries](#binaries)
-   * [Building](#building)
+ * [Building](#building)
  * [Configuration](#configuration)
    * [Howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config)
+   * [Settings](#settings)
    * [Examples](#examples)
  * [Running](#running)
    * [Docker](#docker)
@@ -81,7 +82,6 @@
 * [Slack](https://slack.com)
 * [Discord](https://discordapp.com)
 * [Telegram](https://telegram.org)
-* [Hipchat](https://www.hipchat.com)
 * [Rocket.chat](https://rocket.chat)
 * [Matrix](https://matrix.org)
 * [Steam](https://store.steampowered.com/)
@@ -97,7 +97,7 @@
 * [Discourse](https://github.com/DeclanHoare/matterbabble)
 
 ### API
-The API is very basic at the moment.   
+The API is basic at the moment.
 More info and examples on the [wiki](https://github.com/42wim/matterbridge/wiki/Api).
 
 Used by the projects below. Feel free to make a PR to add your project to this list.
@@ -119,7 +119,7 @@ Questions or want to test on your favorite platform? Join below:
 * [Slack][mb-slack]
 * [Mattermost][mb-mattermost]
 * [Rocket.Chat][mb-rocketchat]
-* [XMPP][mb-xmpp]
+* [XMPP][mb-xmpp] (matterbridge@conference.jabber.de)
 * [Twitch][mb-twitch]
 * [Zulip][mb-zulip]
 * [Telegram][mb-telegram]
@@ -127,15 +127,20 @@ Questions or want to test on your favorite platform? Join below:
 ## Screenshots
 See https://github.com/42wim/matterbridge/wiki
 
-## Installing
+## Installing / upgrading
 ### Binaries
-* Latest stable release [v1.14.2](https://github.com/42wim/matterbridge/releases/latest)
+* Latest stable release [v1.15.1](https://github.com/42wim/matterbridge/releases/latest)
 * Development releases (follows master) can be downloaded [here](https://dl.bintray.com/42wim/nightly/)
 
+To install or upgrade just download the latest [binary](https://github.com/42wim/matterbridge/releases/latest) and follow the instructions on the [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
+
 ### Packages
 * [Overview](https://repology.org/metapackage/matterbridge/versions)
 
-### Building
+## Building
+Most people just want to use binaries, you can find those [here](https://github.com/42wim/matterbridge/releases/latest)
+
+If you really want to build from source, follow these instructions:
 Go 1.9+ 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.
@@ -156,6 +161,9 @@ matterbridge
 ### Basic configuration
 See [howto](https://github.com/42wim/matterbridge/wiki/How-to-create-your-config) for a step by step walkthrough for creating your configuration.
 
+### Settings
+All possible [settings](https://github.com/42wim/matterbridge/wiki/Settings) for each bridge.
+
 ### Advanced configuration
 * [matterbridge.toml.sample](https://github.com/42wim/matterbridge/blob/master/matterbridge.toml.sample) for documentation and an example.
 

bridge/config/config.go

@@ -120,13 +120,14 @@ type Protocol struct {
 	ReplaceMessages        [][]string // all protocols
 	ReplaceNicks           [][]string // all protocols
 	RemoteNickFormat       string     // all protocols
-	RunCommands            []string   // irc
+	RunCommands            []string   // IRC
 	Server                 string     // IRC,mattermost,XMPP,discord
 	ShowJoinPart           bool       // all protocols
 	ShowTopicChange        bool       // slack
 	ShowUserTyping         bool       // slack
 	ShowEmbeds             bool       // discord
 	SkipTLSVerify          bool       // IRC, mattermost
+	SkipVersionCheck       bool       // mattermost
 	StripNick              bool       // all protocols
 	SyncTopic              bool       // slack
 	TengoModifyMessage     string     // general
@@ -141,6 +142,7 @@ type Protocol struct {
 	UseFirstName           bool       // telegram
 	UseUserName            bool       // discord
 	UseInsecureURL         bool       // telegram
+	VerboseJoinPart        bool       // IRC
 	WebhookBindAddress     string     // mattermost, slack
 	WebhookURL             string     // mattermost, slack
 }
@@ -166,6 +168,13 @@ type Gateway struct {
 	InOut  []Bridge
 }
 
+type Tengo struct {
+	InMessage        string
+	Message          string
+	RemoteNickFormat string
+	OutMessage       string
+}
+
 type SameChannelGateway struct {
 	Name     string
 	Enable   bool
@@ -190,6 +199,7 @@ type BridgeValues struct {
 	WhatsApp           map[string]Protocol // TODO is this struct used? Search for "SlackLegacy" for example didn't return any results
 	Zulip              map[string]Protocol
 	General            Protocol
+	Tengo              Tengo
 	Gateway            []Gateway
 	SameChannelGateway []SameChannelGateway
 }
@@ -245,12 +255,12 @@ func newConfigFromString(logger *logrus.Entry, input []byte) *config {
 	viper.AutomaticEnv()
 
 	if err := viper.ReadConfig(bytes.NewBuffer(input)); err != nil {
-		logger.Fatalf("Failed to parse the configuration: %#v", err)
+		logger.Fatalf("Failed to parse the configuration: %s", err)
 	}
 
 	cfg := &BridgeValues{}
 	if err := viper.Unmarshal(cfg); err != nil {
-		logger.Fatalf("Failed to load the configuration: %#v", err)
+		logger.Fatalf("Failed to load the configuration: %s", err)
 	}
 	return &config{
 		logger: logger,

bridge/discord/discord.go

@@ -75,6 +75,7 @@ func (b *Bdiscord) Connect() error {
 	b.c.AddHandler(b.memberUpdate)
 	b.c.AddHandler(b.messageUpdate)
 	b.c.AddHandler(b.messageDelete)
+	b.c.AddHandler(b.messageDeleteBulk)
 	b.c.AddHandler(b.memberAdd)
 	b.c.AddHandler(b.memberRemove)
 	err = b.c.Open()
@@ -95,11 +96,11 @@ func (b *Bdiscord) Connect() error {
 	for _, guild := range guilds {
 		if guild.Name == serverName || guild.ID == serverName {
 			b.channels, err = b.c.GuildChannels(guild.ID)
-			b.guildID = guild.ID
-			guildFound = true
 			if err != nil {
 				break
 			}
+			b.guildID = guild.ID
+			guildFound = true
 		}
 	}
 	b.channelsMutex.Unlock()
@@ -208,11 +209,21 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 	b.channelsMutex.RUnlock()
 
 	// Use webhook to send the message
-	if wID != "" {
+	if wID != "" && msg.Event != config.EventMsgDelete {
 		// skip events
 		if msg.Event != "" && msg.Event != config.EventJoinLeave && msg.Event != config.EventTopicChange {
 			return "", nil
 		}
+
+		// If we are editing a message, delete the old message
+		if msg.ID != "" {
+			b.Log.Debugf("Deleting edited webhook message")
+			err := b.c.ChannelMessageDelete(channelID, msg.ID)
+			if err != nil {
+				b.Log.Errorf("Could not delete edited webhook message: %s", err)
+			}
+		}
+
 		b.Log.Debugf("Broadcasting using Webhook")
 		for _, f := range msg.Extra["file"] {
 			fi := f.(config.FileInfo)
@@ -250,16 +261,11 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
 				return "", err
 			}
 		}
-		err := b.c.WebhookExecute(
-			wID,
-			wToken,
-			true,
-			&discordgo.WebhookParams{
-				Content:   msg.Text,
-				Username:  msg.Username,
-				AvatarURL: msg.Avatar,
-			})
-		return "", err
+		msg, err := b.webhookSend(&msg, wID, wToken)
+		if err != nil {
+			return "", err
+		}
+		return msg.ID, nil
 	}
 
 	b.Log.Debugf("Broadcasting using token (API)")
@@ -365,3 +371,51 @@ func (b *Bdiscord) handleUploadFile(msg *config.Message, channelID string) (stri
 	}
 	return "", nil
 }
+
+// webhookSend send one or more message via webhook, taking care of file
+// uploads (from slack, telegram or mattermost).
+// Returns messageID and error.
+func (b *Bdiscord) webhookSend(msg *config.Message, webhookID, token string) (*discordgo.Message, error) {
+	var err error
+
+	// WebhookParams can have either `Content` or `File`.
+	res, err := b.c.WebhookExecute(
+		webhookID,
+		token,
+		true,
+		&discordgo.WebhookParams{
+			Content:   msg.Text,
+			Username:  msg.Username,
+			AvatarURL: msg.Avatar,
+		},
+	)
+	if err != nil {
+		return nil, err
+	}
+
+	if msg.Extra != nil {
+		for _, f := range msg.Extra["file"] {
+			fi := f.(config.FileInfo)
+			file := discordgo.File{
+				Name:        fi.Name,
+				ContentType: "",
+				Reader:      bytes.NewReader(*fi.Data),
+			}
+			_, err := b.c.WebhookExecute(
+				webhookID,
+				token,
+				false,
+				&discordgo.WebhookParams{
+					Username:  msg.Username,
+					AvatarURL: msg.Avatar,
+					File:      &file,
+				},
+			)
+			if err != nil {
+				return nil, fmt.Errorf("file upload failed: %s", err)
+			}
+		}
+	}
+
+	return res, nil
+}

bridge/discord/handlers.go

@@ -16,6 +16,27 @@ func (b *Bdiscord) messageDelete(s *discordgo.Session, m *discordgo.MessageDelet
 	b.Remote <- rmsg
 }
 
+// TODO(qaisjp): if other bridges support bulk deletions, it could be fanned out centrally
+func (b *Bdiscord) messageDeleteBulk(s *discordgo.Session, m *discordgo.MessageDeleteBulk) { //nolint:unparam
+	for _, msgID := range m.Messages {
+		rmsg := config.Message{
+			Account: b.Account,
+			ID:      msgID,
+			Event:   config.EventMsgDelete,
+			Text:    config.EventMsgDelete,
+			Channel: "ID:" + m.ChannelID,
+		}
+
+		if !b.useChannelID {
+			rmsg.Channel = b.getChannelName(m.ChannelID)
+		}
+
+		b.Log.Debugf("<= Sending message from %s to gateway", b.Account)
+		b.Log.Debugf("<= Message is %#v", rmsg)
+		b.Remote <- rmsg
+	}
+}
+
 func (b *Bdiscord) messageUpdate(s *discordgo.Session, m *discordgo.MessageUpdate) { //nolint:unparam
 	if b.GetBool("EditDisable") {
 		return
@@ -36,7 +57,7 @@ func (b *Bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreat
 		return
 	}
 	// if using webhooks, do not relay if it's ours
-	if b.useWebhook() && m.Author.Bot { // && b.isWebhookID(m.Author.ID) {
+	if b.useWebhook() && m.Author.Bot && b.isWebhookID(m.Author.ID) {
 		return
 	}
 

bridge/discord/helpers.go

@@ -51,6 +51,9 @@ func (b *Bdiscord) getGuildMemberByNick(nick string) (*discordgo.Member, error)
 }
 
 func (b *Bdiscord) getChannelID(name string) string {
+	if strings.Contains(name, "/") {
+		return b.getCategoryChannelID(name)
+	}
 	b.channelsMutex.RLock()
 	defer b.channelsMutex.RUnlock()
 
@@ -59,25 +62,70 @@ func (b *Bdiscord) getChannelID(name string) string {
 		return idcheck[1]
 	}
 	for _, channel := range b.channels {
-		if channel.Name == name {
+		if channel.Name == name && channel.Type == discordgo.ChannelTypeGuildText {
 			return channel.ID
 		}
 	}
 	return ""
 }
 
+func (b *Bdiscord) getCategoryChannelID(name string) string {
+	b.channelsMutex.RLock()
+	defer b.channelsMutex.RUnlock()
+	res := strings.Split(name, "/")
+	// shouldn't happen because function should be only called from getChannelID
+	if len(res) != 2 {
+		return ""
+	}
+	catName, chanName := res[0], res[1]
+	for _, channel := range b.channels {
+		// if we have a parentID, lookup the name of that parent (category)
+		// and if it matches return it
+		if channel.Name == chanName && channel.ParentID != "" {
+			for _, cat := range b.channels {
+				if cat.ID == channel.ParentID && cat.Name == catName {
+					return channel.ID
+				}
+			}
+		}
+	}
+	return ""
+}
+
 func (b *Bdiscord) getChannelName(id string) string {
 	b.channelsMutex.RLock()
 	defer b.channelsMutex.RUnlock()
 
 	for _, channel := range b.channels {
 		if channel.ID == id {
-			return channel.Name
+			return b.getCategoryChannelName(channel.Name, channel.ParentID)
 		}
 	}
 	return ""
 }
 
+func (b *Bdiscord) getCategoryChannelName(name, parentID string) string {
+	var usesCat bool
+	// do we have a category configuration in the channel config
+	for _, c := range b.channelInfoMap {
+		if strings.Contains(c.Name, "/") {
+			usesCat = true
+			break
+		}
+	}
+	// configuration without category, return the normal channel name
+	if !usesCat {
+		return name
+	}
+	// create a category/channel response
+	for _, c := range b.channels {
+		if c.ID == parentID {
+			name = c.Name + "/" + name
+		}
+	}
+	return name
+}
+
 var (
 	// See https://discordapp.com/developers/docs/reference#message-formatting.
 	channelMentionRE = regexp.MustCompile("<#[0-9]+>")
@@ -87,12 +135,12 @@ var (
 
 func (b *Bdiscord) replaceChannelMentions(text string) string {
 	replaceChannelMentionFunc := func(match string) string {
-		var err error
 		channelID := match[2 : len(match)-1]
-
 		channelName := b.getChannelName(channelID)
+
 		// If we don't have the channel refresh our list.
 		if channelName == "" {
+			var err error
 			b.channels, err = b.c.GuildChannels(b.guildID)
 			if err != nil {
 				return "#unknownchannel"
@@ -134,7 +182,7 @@ func (b *Bdiscord) stripCustomoji(text string) string {
 
 func (b *Bdiscord) replaceAction(text string) (string, bool) {
 	if strings.HasPrefix(text, "_") && strings.HasSuffix(text, "_") {
-		return text[1:], true
+		return text[1 : len(text)-1], true
 	}
 	return text, false
 }

bridge/irc/handlers.go

@@ -4,7 +4,6 @@ import (
 	"bytes"
 	"fmt"
 	"io/ioutil"
-	"regexp"
 	"strconv"
 	"strings"
 	"time"
@@ -91,8 +90,13 @@ func (b *Birc) handleJoinPart(client *girc.Client, event girc.Event) {
 		if b.GetBool("nosendjoinpart") {
 			return
 		}
-		b.Log.Debugf("<= Sending JOIN_LEAVE event from %s to gateway", b.Account)
 		msg := config.Message{Username: "system", Text: event.Source.Name + " " + strings.ToLower(event.Command) + "s", Channel: channel, Account: b.Account, Event: config.EventJoinLeave}
+		if b.GetBool("verbosejoinpart") {
+			b.Log.Debugf("<= Sending verbose JOIN_LEAVE event from %s to gateway", b.Account)
+			msg = config.Message{Username: "system", Text: event.Source.Name + " (" + event.Source.Ident + "@" + event.Source.Host + ") " + strings.ToLower(event.Command) + "s", Channel: channel, Account: b.Account, Event: config.EventJoinLeave}
+		} else {
+			b.Log.Debugf("<= Sending JOIN_LEAVE event from %s to gateway", b.Account)
+		}
 		b.Log.Debugf("<= Message is %#v", msg)
 		b.Remote <- msg
 		return
@@ -156,7 +160,10 @@ func (b *Birc) handleOtherAuth(client *girc.Client, event girc.Event) {
 	b.handleNickServ()
 	b.handleRunCommands()
 	// we are now fully connected
-	b.connected <- nil
+	// only send on first connection
+	if b.FirstConnection {
+		b.connected <- nil
+	}
 }
 
 func (b *Birc) handlePrivMsg(client *girc.Client, event girc.Event) {
@@ -174,10 +181,6 @@ func (b *Birc) handlePrivMsg(client *girc.Client, event girc.Event) {
 	// strip action, we made an event if it was an action
 	rmsg.Text += event.StripAction()
 
-	// strip IRC colors
-	re := regexp.MustCompile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
-	rmsg.Text = re.ReplaceAllString(rmsg.Text, "")
-
 	// start detecting the charset
 	mycharset := b.GetString("Charset")
 	if mycharset == "" {

bridge/mattermost/helpers.go

@@ -70,6 +70,7 @@ func (b *Bmattermost) apiLogin() error {
 		b.mc.SetLogLevel("debug")
 	}
 	b.mc.SkipTLSVerify = b.GetBool("SkipTLSVerify")
+	b.mc.SkipVersionCheck = b.GetBool("SkipVersionCheck")
 	b.mc.NoTLS = b.GetBool("NoTLS")
 	b.Log.Infof("Connecting %s (team: %s) on %s", b.GetString("Login"), b.GetString("Team"), b.GetString("Server"))
 	err := b.mc.Login()
@@ -186,6 +187,12 @@ func (b *Bmattermost) skipMessage(message *matterclient.Message) bool {
 		return true
 	}
 
+	// Ignore non-post messages
+	if message.Post == nil {
+		b.Log.Debugf("ignoring nil message.Post: %#v", message)
+		return true
+	}
+
 	// Ignore messages sent from matterbridge
 	if message.Post.Props != nil {
 		if _, ok := message.Post.Props["matterbridge_"+b.uuid].(bool); ok {

bridge/mattermost/mattermost.go

@@ -121,6 +121,12 @@ func (b *Bmattermost) Send(msg config.Message) (string, error) {
 		return msg.ID, b.mc.DeleteMessage(msg.ID)
 	}
 
+	// Handle prefix hint for unthreaded messages.
+	if msg.ParentID == "msg-parent-not-found" {
+		msg.ParentID = ""
+		msg.Text = fmt.Sprintf("[thread]: %s", msg.Text)
+	}
+
 	// Upload a file if it exists
 	if msg.Extra != nil {
 		for _, rmsg := range helper.HandleExtra(&msg, b.General) {

bridge/rocketchat/rocketchat.go

@@ -108,6 +108,11 @@ func (b *Brocketchat) Send(msg config.Message) (string, error) {
 	msg.Channel = strings.TrimPrefix(msg.Channel, "#")
 	channel := &models.Channel{ID: b.getChannelID(msg.Channel), Name: msg.Channel}
 
+	// Make a action /me of the message
+	if msg.Event == config.EventUserAction {
+		msg.Text = "_" + msg.Text + "_"
+	}
+
 	// Delete message
 	if msg.Event == config.EventMsgDelete {
 		if msg.ID == "" {

bridge/slack/handlers.go

@@ -22,20 +22,20 @@ func (b *Bslack) handleSlack() {
 	time.Sleep(time.Second)
 	b.Log.Debug("Start listening for Slack messages")
 	for message := range messages {
-		if message.Event != config.EventUserTyping {
+		// don't do any action on deleted/typing messages
+		if message.Event != config.EventUserTyping && message.Event != config.EventMsgDelete {
 			b.Log.Debugf("<= Sending message from %s on %s to gateway", message.Username, b.Account)
+			// cleanup the message
+			message.Text = b.replaceMention(message.Text)
+			message.Text = b.replaceVariable(message.Text)
+			message.Text = b.replaceChannel(message.Text)
+			message.Text = b.replaceURL(message.Text)
+			message.Text = html.UnescapeString(message.Text)
+
+			// Add the avatar
+			message.Avatar = b.users.getAvatar(message.UserID)
 		}
 
-		// cleanup the message
-		message.Text = b.replaceMention(message.Text)
-		message.Text = b.replaceVariable(message.Text)
-		message.Text = b.replaceChannel(message.Text)
-		message.Text = b.replaceURL(message.Text)
-		message.Text = html.UnescapeString(message.Text)
-
-		// Add the avatar
-		message.Avatar = b.users.getAvatar(message.UserID)
-
 		b.Log.Debugf("<= Message is %#v", message)
 		b.Remote <- *message
 	}

bridge/slack/legacy.go

@@ -13,7 +13,9 @@ type BLegacy struct {
 }
 
 func NewLegacy(cfg *bridge.Config) bridge.Bridger {
-	return &BLegacy{Bslack: newBridge(cfg)}
+	b := &BLegacy{Bslack: newBridge(cfg)}
+	b.legacy = true
+	return b
 }
 
 func (b *BLegacy) Connect() error {

bridge/slack/slack.go

@@ -32,6 +32,7 @@ type Bslack struct {
 
 	channels *channels
 	users    *users
+	legacy   bool
 }
 
 const (
@@ -151,6 +152,18 @@ func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
 		return nil
 	}
 
+	// try to join a channel when in legacy
+	if b.legacy {
+		_, err := b.sc.JoinChannel(channel.Name)
+		if err != nil {
+			switch err.Error() {
+			case "name_taken", "restricted_action":
+			case "default":
+				return err
+			}
+		}
+	}
+
 	b.channels.populateChannels(false)
 
 	channelInfo, err := b.channels.getChannel(channel.Name)
@@ -163,7 +176,8 @@ func (b *Bslack) JoinChannel(channel config.ChannelInfo) error {
 		channel.Name = channelInfo.Name
 	}
 
-	if !channelInfo.IsMember {
+	// we can't join a channel unless we are using legacy tokens #651
+	if !channelInfo.IsMember && !b.legacy {
 		return fmt.Errorf("slack integration that matterbridge is using is not member of channel '%s', please add it manually", channelInfo.Name)
 	}
 	return nil

bridge/slack/users_channels.go

@@ -87,6 +87,11 @@ func (b *users) populateUser(userID string) {
 			// in case the previous query failed for some reason.
 		} else {
 			b.usersSyncPoints[userID] = make(chan struct{})
+			defer func() {
+				// Wake up any waiting goroutines and remove the synchronization point.
+				close(b.usersSyncPoints[userID])
+				delete(b.usersSyncPoints, userID)
+			}()
 			break
 		}
 	}
@@ -106,10 +111,6 @@ func (b *users) populateUser(userID string) {
 
 	// Register user information.
 	b.users[userID] = user
-
-	// Wake up any waiting goroutines and remove the synchronization point.
-	close(b.usersSyncPoints[userID])
-	delete(b.usersSyncPoints, userID)
 }
 
 func (b *users) populateUsers(wait bool) {

bridge/telegram/handlers.go

@@ -5,10 +5,11 @@ import (
 	"regexp"
 	"strconv"
 	"strings"
+	"unicode/utf16"
 
 	"github.com/42wim/matterbridge/bridge/config"
 	"github.com/42wim/matterbridge/bridge/helper"
-	"github.com/go-telegram-bot-api/telegram-bot-api"
+	tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
 )
 
 func (b *Btelegram) handleUpdate(rmsg *config.Message, message, posted, edited *tgbotapi.Message) *tgbotapi.Message {
@@ -375,8 +376,13 @@ func (b *Btelegram) handleEntities(rmsg *config.Message, message *tgbotapi.Messa
 				b.Log.Errorf("entity text_link url parse failed: %s", err)
 				continue
 			}
-			link := rmsg.Text[e.Offset : e.Offset+e.Length]
-			rmsg.Text = strings.Replace(rmsg.Text, link, url.String(), 1)
+			utfEncodedString := utf16.Encode([]rune(rmsg.Text))
+			if e.Offset+e.Length > len(utfEncodedString) {
+				b.Log.Errorf("entity length is too long %d > %d", e.Offset+e.Length, len(utfEncodedString))
+				continue
+			}
+			link := utf16.Decode(utfEncodedString[e.Offset : e.Offset+e.Length])
+			rmsg.Text = strings.Replace(rmsg.Text, string(link), url.String(), 1)
 		}
 	}
 }

bridge/whatsapp/handlers.go

@@ -5,10 +5,7 @@ import (
 	"time"
 
 	"github.com/42wim/matterbridge/bridge/config"
-
-	"github.com/matterbridge/go-whatsapp"
-
-	whatsappExt "github.com/matterbridge/mautrix-whatsapp/whatsapp-ext"
+	"github.com/Rhymen/go-whatsapp"
 )
 
 /*
@@ -21,6 +18,10 @@ Check:
 
 // HandleError received from WhatsApp
 func (b *Bwhatsapp) HandleError(err error) {
+	// ignore received invalid data errors. https://github.com/42wim/matterbridge/issues/843
+	if strings.Contains(err.Error(), "error processing data: received invalid data") {
+		return
+	}
 	b.Log.Errorf("%v", err) // TODO implement proper handling? at least respond to different error types
 }
 
@@ -57,7 +58,7 @@ func (b *Bwhatsapp) HandleTextMessage(message whatsapp.TextMessage) {
 
 			// mentions comes as telephone numbers and we don't want to expose it to other bridges
 			// replace it with something more meaninful to others
-			mention := b.getSenderNotify(numberAndSuffix[0] + whatsappExt.NewUserSuffix)
+			mention := b.getSenderNotify(numberAndSuffix[0] + "@s.whatsapp.net")
 			if mention == "" {
 				mention = "someone"
 			}

bridge/whatsapp/helpers.go

@@ -2,13 +2,22 @@ package bwhatsapp
 
 import (
 	"encoding/gob"
+	"encoding/json"
 	"errors"
+	"fmt"
 	"os"
 
 	qrcodeTerminal "github.com/Baozisoftware/qrcode-terminal-go"
-	"github.com/matterbridge/go-whatsapp"
+	"github.com/Rhymen/go-whatsapp"
 )
 
+type ProfilePicInfo struct {
+	URL string `json:"eurl"`
+	Tag string `json:"tag"`
+
+	Status int16 `json:"status"`
+}
+
 func qrFromTerminal(invert bool) chan string {
 	qr := make(chan string)
 	go func() {
@@ -82,3 +91,17 @@ func (b *Bwhatsapp) getSenderNotify(senderJid string) string {
 	}
 	return ""
 }
+
+func (b *Bwhatsapp) GetProfilePicThumb(jid string) (*ProfilePicInfo, error) {
+	data, err := b.conn.GetProfilePicThumb(jid)
+	if err != nil {
+		return nil, fmt.Errorf("failed to get avatar: %v", err)
+	}
+	content := <-data
+	info := &ProfilePicInfo{}
+	err = json.Unmarshal([]byte(content), info)
+	if err != nil {
+		return info, fmt.Errorf("failed to unmarshal avatar info: %v", err)
+	}
+	return info, nil
+}

bridge/whatsapp/whatsapp.go

@@ -11,10 +11,7 @@ import (
 
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
-
-	"github.com/matterbridge/go-whatsapp"
-
-	whatsappExt "github.com/matterbridge/mautrix-whatsapp/whatsapp-ext"
+	"github.com/Rhymen/go-whatsapp"
 )
 
 const (
@@ -29,10 +26,8 @@ type Bwhatsapp struct {
 	*bridge.Config
 
 	// https://github.com/Rhymen/go-whatsapp/blob/c31092027237441cffba1b9cb148eadf7c83c3d2/session.go#L18-L21
-	session *whatsapp.Session
-	conn    *whatsapp.Conn
-	// https://github.com/tulir/mautrix-whatsapp/blob/master/whatsapp-ext/whatsapp.go
-	connExt   *whatsappExt.ExtendedConn
+	session   *whatsapp.Session
+	conn      *whatsapp.Conn
 	startedAt uint64
 
 	users       map[string]whatsapp.Contact
@@ -74,8 +69,6 @@ func (b *Bwhatsapp) Connect() error {
 	}
 
 	b.conn = conn
-	b.connExt = whatsappExt.ExtendConn(b.conn)
-	// TODO do we want to use it? b.connExt.SetClientName("Matterbridge WhatsApp bridge", "mb-wa")
 
 	b.conn.AddHandler(b)
 	b.Log.Debugln("WhatsApp connection successful")
@@ -89,7 +82,7 @@ func (b *Bwhatsapp) Connect() error {
 			b.Log.Debugln("Restoring WhatsApp session..")
 
 			// https://github.com/Rhymen/go-whatsapp#restore
-			session, err = b.conn.RestoreSession(session)
+			session, err = b.conn.RestoreWithSession(session)
 			if err != nil {
 				// TODO return or continue to normal login?
 				// restore session connection timed out (I couldn't get over it without logging in again)
@@ -130,7 +123,7 @@ func (b *Bwhatsapp) Connect() error {
 		b.Log.Debug("Getting user avatars..")
 
 		for jid := range b.users {
-			info, err := b.connExt.GetProfilePicThumb(jid)
+			info, err := b.GetProfilePicThumb(jid)
 			if err != nil {
 				b.Log.Warnf("Could not get profile photo of %s: %v", jid, err)
 
@@ -294,7 +287,7 @@ func (b *Bwhatsapp) Send(msg config.Message) (string, error) {
 	}
 	text.Info.Id = strings.ToUpper(hex.EncodeToString(bytes))
 
-	err := b.conn.Send(text)
+	_, err := b.conn.Send(text)
 
 	return text.Info.Id, err
 }

bridge/xmpp/xmpp.go

@@ -2,7 +2,9 @@ package bxmpp
 
 import (
 	"crypto/tls"
+	"fmt"
 	"strings"
+	"sync"
 	"time"
 
 	"github.com/42wim/matterbridge/bridge"
@@ -14,50 +16,31 @@ import (
 )
 
 type Bxmpp struct {
-	xc      *xmpp.Client
-	xmppMap map[string]string
 	*bridge.Config
+
 	startTime time.Time
+	xc        *xmpp.Client
+	xmppMap   map[string]string
+	connected bool
+	sync.RWMutex
 }
 
 func New(cfg *bridge.Config) bridge.Bridger {
-	b := &Bxmpp{Config: cfg}
-	b.xmppMap = make(map[string]string)
-	return b
+	return &Bxmpp{
+		Config:  cfg,
+		xmppMap: make(map[string]string),
+	}
 }
 
 func (b *Bxmpp) Connect() error {
-	var err error
 	b.Log.Infof("Connecting %s", b.GetString("Server"))
-	b.xc, err = b.createXMPP()
-	if err != nil {
+	if err := b.createXMPP(); err != nil {
 		b.Log.Debugf("%#v", err)
 		return err
 	}
+
 	b.Log.Info("Connection succeeded")
-	go func() {
-		initial := true
-		bf := &backoff.Backoff{
-			Min:    time.Second,
-			Max:    5 * time.Minute,
-			Jitter: true,
-		}
-		for {
-			if initial {
-				b.handleXMPP()
-				initial = false
-			}
-			d := bf.Duration()
-			b.Log.Infof("Disconnected. Reconnecting in %s", d)
-			time.Sleep(d)
-			b.xc, err = b.createXMPP()
-			if err == nil {
-				b.Remote <- config.Message{Username: "system", Text: "rejoin", Channel: "", Account: b.Account, Event: config.EventRejoinChannels}
-				b.handleXMPP()
-				bf.Reset()
-			}
-		}
-	}()
+	go b.manageConnection()
 	return nil
 }
 
@@ -76,40 +59,58 @@ func (b *Bxmpp) JoinChannel(channel config.ChannelInfo) error {
 }
 
 func (b *Bxmpp) Send(msg config.Message) (string, error) {
+	// should be fixed by using a cache instead of dropping
+	if !b.Connected() {
+		return "", fmt.Errorf("bridge %s not connected, dropping message %#v to bridge", b.Account, msg)
+	}
 	// ignore delete messages
 	if msg.Event == config.EventMsgDelete {
 		return "", nil
 	}
 	b.Log.Debugf("=> Receiving %#v", msg)
 
-	// Upload a file (in xmpp case send the upload URL because xmpp has no native upload support)
+	// Upload a file (in XMPP case send the upload URL because XMPP has no native upload support).
 	if msg.Extra != nil {
 		for _, rmsg := range helper.HandleExtra(&msg, b.General) {
-			b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: rmsg.Channel + "@" + b.GetString("Muc"), Text: rmsg.Username + rmsg.Text})
+			b.Log.Debugf("=> Sending attachement message %#v", rmsg)
+			if _, err := b.xc.Send(xmpp.Chat{
+				Type:   "groupchat",
+				Remote: rmsg.Channel + "@" + b.GetString("Muc"),
+				Text:   rmsg.Username + rmsg.Text,
+			}); err != nil {
+				b.Log.WithError(err).Error("Unable to send message with share URL.")
+			}
 		}
 		if len(msg.Extra["file"]) > 0 {
-			return b.handleUploadFile(&msg)
+			return "", b.handleUploadFile(&msg)
 		}
 	}
 
-	var msgreplaceid string
-	msgid := xid.New().String()
+	var msgReplaceID string
+	msgID := xid.New().String()
 	if msg.ID != "" {
-		msgid = msg.ID
-		msgreplaceid = msg.ID
+		msgID = msg.ID
+		msgReplaceID = msg.ID
 	}
-	// Post normal message
-	_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text, ID: msgid, ReplaceID: msgreplaceid})
-	if err != nil {
+	// Post normal message.
+	b.Log.Debugf("=> Sending message %#v", msg)
+	if _, err := b.xc.Send(xmpp.Chat{
+		Type:      "groupchat",
+		Remote:    msg.Channel + "@" + b.GetString("Muc"),
+		Text:      msg.Username + msg.Text,
+		ID:        msgID,
+		ReplaceID: msgReplaceID,
+	}); err != nil {
 		return "", err
 	}
-	return msgid, nil
+	return msgID, nil
 }
 
-func (b *Bxmpp) createXMPP() (*xmpp.Client, error) {
-	tc := new(tls.Config)
-	tc.InsecureSkipVerify = b.GetBool("SkipTLSVerify")
-	tc.ServerName = strings.Split(b.GetString("Server"), ":")[0]
+func (b *Bxmpp) createXMPP() error {
+	tc := &tls.Config{
+		ServerName:         strings.Split(b.GetString("Jid"), "@")[1],
+		InsecureSkipVerify: b.GetBool("SkipTLSVerify"), // nolint: gosec
+	}
 	options := xmpp.Options{
 		Host:                         b.GetString("Server"),
 		User:                         b.GetString("Jid"),
@@ -127,7 +128,54 @@ func (b *Bxmpp) createXMPP() (*xmpp.Client, error) {
 	}
 	var err error
 	b.xc, err = options.NewClient()
-	return b.xc, err
+	return err
+}
+
+func (b *Bxmpp) manageConnection() {
+	b.setConnected(true)
+	initial := true
+	bf := &backoff.Backoff{
+		Min:    time.Second,
+		Max:    5 * time.Minute,
+		Jitter: true,
+	}
+
+	// Main connection loop. Each iteration corresponds to a successful
+	// connection attempt and the subsequent handling of the connection.
+	for {
+		if initial {
+			initial = false
+		} else {
+			b.Remote <- config.Message{
+				Username: "system",
+				Text:     "rejoin",
+				Channel:  "",
+				Account:  b.Account,
+				Event:    config.EventRejoinChannels,
+			}
+		}
+
+		if err := b.handleXMPP(); err != nil {
+			b.Log.WithError(err).Error("Disconnected.")
+			b.setConnected(false)
+		}
+
+		// Reconnection loop using an exponential back-off strategy. We
+		// only break out of the loop if we have successfully reconnected.
+		for {
+			d := bf.Duration()
+			b.Log.Infof("Reconnecting in %s.", d)
+			time.Sleep(d)
+
+			b.Log.Infof("Reconnecting now.")
+			if err := b.createXMPP(); err == nil {
+				b.setConnected(true)
+				bf.Reset()
+				break
+			}
+			b.Log.Warn("Failed to reconnect.")
+		}
+	}
 }
 
 func (b *Bxmpp) xmppKeepAlive() chan bool {
@@ -139,8 +187,7 @@ func (b *Bxmpp) xmppKeepAlive() chan bool {
 			select {
 			case <-ticker.C:
 				b.Log.Debugf("PING")
-				err := b.xc.PingC2S("", "")
-				if err != nil {
+				if err := b.xc.PingC2S("", ""); err != nil {
 					b.Log.Debugf("PING failed %#v", err)
 				}
 			case <-done:
@@ -152,31 +199,35 @@ func (b *Bxmpp) xmppKeepAlive() chan bool {
 }
 
 func (b *Bxmpp) handleXMPP() error {
-	var ok bool
-	var msgid string
 	b.startTime = time.Now()
+
 	done := b.xmppKeepAlive()
 	defer close(done)
+
 	for {
 		m, err := b.xc.Recv()
 		if err != nil {
 			return err
 		}
+
 		switch v := m.(type) {
 		case xmpp.Chat:
 			if v.Type == "groupchat" {
 				b.Log.Debugf("== Receiving %#v", v)
-				event := ""
-				// skip invalid messages
+
+				// Skip invalid messages.
 				if b.skipMessage(v) {
 					continue
 				}
+
+				var event string
 				if strings.Contains(v.Text, "has set the subject to:") {
 					event = config.EventTopicChange
 				}
-				msgid = v.ID
+
+				msgID := v.ID
 				if v.ReplaceID != "" {
-					msgid = v.ReplaceID
+					msgID = v.ReplaceID
 				}
 				rmsg := config.Message{
 					Username: b.parseNick(v.Remote),
@@ -184,21 +235,23 @@ func (b *Bxmpp) handleXMPP() error {
 					Channel:  b.parseChannel(v.Remote),
 					Account:  b.Account,
 					UserID:   v.Remote,
-					ID:       msgid,
+					ID:       msgID,
 					Event:    event,
 				}
 
-				// check if we have an action event
+				// Check if we have an action event.
+				var ok bool
 				rmsg.Text, ok = b.replaceAction(rmsg.Text)
 				if ok {
 					rmsg.Event = config.EventUserAction
 				}
+
 				b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
 				b.Log.Debugf("<= Message is %#v", rmsg)
 				b.Remote <- rmsg
 			}
 		case xmpp.Presence:
-			// do nothing
+			// Do nothing.
 		}
 	}
 }
@@ -211,30 +264,41 @@ 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 = ""
+func (b *Bxmpp) handleUploadFile(msg *config.Message) error {
+	var urlDesc string
 
-	for _, f := range msg.Extra["file"] {
-		fi := f.(config.FileInfo)
-		if fi.Comment != "" {
-			msg.Text += fi.Comment + ": "
+	for _, file := range msg.Extra["file"] {
+		fileInfo := file.(config.FileInfo)
+		if fileInfo.Comment != "" {
+			msg.Text += fileInfo.Comment + ": "
 		}
-		if fi.URL != "" {
-			msg.Text = fi.URL
-			if fi.Comment != "" {
-				msg.Text = fi.Comment + ": " + fi.URL
-				urldesc = fi.Comment
+		if fileInfo.URL != "" {
+			msg.Text = fileInfo.URL
+			if fileInfo.Comment != "" {
+				msg.Text = fileInfo.Comment + ": " + fileInfo.URL
+				urlDesc = fileInfo.Comment
 			}
 		}
-		_, err := b.xc.Send(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Text: msg.Username + msg.Text})
-		if err != nil {
-			return "", err
+		if _, err := b.xc.Send(xmpp.Chat{
+			Type:   "groupchat",
+			Remote: msg.Channel + "@" + b.GetString("Muc"),
+			Text:   msg.Username + msg.Text,
+		}); err != nil {
+			return err
 		}
-		if fi.URL != "" {
-			b.xc.SendOOB(xmpp.Chat{Type: "groupchat", Remote: msg.Channel + "@" + b.GetString("Muc"), Ooburl: fi.URL, Oobdesc: urldesc})
+
+		if fileInfo.URL != "" {
+			if _, err := b.xc.SendOOB(xmpp.Chat{
+				Type:    "groupchat",
+				Remote:  msg.Channel + "@" + b.GetString("Muc"),
+				Ooburl:  fileInfo.URL,
+				Oobdesc: urlDesc,
+			}); err != nil {
+				b.Log.WithError(err).Warn("Failed to send share URL.")
+			}
 		}
 	}
-	return "", nil
+	return nil
 }
 
 func (b *Bxmpp) parseNick(remote string) string {
@@ -279,6 +343,17 @@ func (b *Bxmpp) skipMessage(message xmpp.Chat) bool {
 	}
 
 	// skip delayed messages
-	t := time.Time{}
-	return message.Stamp != t
+	return !message.Stamp.IsZero() && time.Since(message.Stamp).Minutes() > 5
+}
+
+func (b *Bxmpp) setConnected(state bool) {
+	b.Lock()
+	b.connected = state
+	defer b.Unlock()
+}
+
+func (b *Bxmpp) Connected() bool {
+	b.RLock()
+	defer b.RUnlock()
+	return b.connected
 }

changelog.md

@@ -1,3 +1,61 @@
+# dev
+
+# v1.15.1
+## Enhancements
+* discord: Support bulk deletions #851
+* discord: Support channels in categories #863 (use category/channel. See matterbridge.toml.sample for more info)
+* mattermost: Add an option to skip the Mattermost server version check #849
+
+## Bugfix
+* xmpp: fix segfault when disconnected/reconnected #856
+* telegram: fix panic in handleEntities #858
+
+This release couldn't exist without the following contributors:
+@42wim, @qaisjp, @joohoi
+
+# v1.15.0
+## New features
+* Add scripting (tengo) support for every outgoing message (#806)
+  See https://github.com/42wim/matterbridge/wiki/Settings#tengo and 
+  https://github.com/42wim/matterbridge/wiki/Settings#outmessage for more information
+* Add tengo support to RemoteNickFormat (#793)
+  See https://github.com/42wim/matterbridge/wiki/Settings#remotenickformat-2
+* Deprecated `Message` under `[tengo]` to `InMessage`
+
+## Enhancements
+* general: Forward only user-typing messages if supported by protocol (#832)
+* general: updated wiki with all possible settings: https://github.com/42wim/matterbridge/wiki/Settings
+* tengo: Add msg event to tengo
+* xmpp: Verify TLS against JID domain, not the host. (xmpp) (#834)
+* xmpp: Allow messages with timestamp (xmpp). Fixes #835 (#847)
+* irc: Add verbose IRC joins/parts (ident@host) (#805)
+  See https://github.com/42wim/matterbridge/wiki/Settings#verbosejoinpart
+* rocketchat: Add useraction support (rocketchat). Closes #772 (#794)
+
+## Bugfix
+* slack: Fix regression in autojoining with legacy tokens (slack). Fixes #651 (#848)
+* xmpp: Revert xmpp to orig behaviour. Closes #844
+* whatsapp: Update github.com/Rhymen/go-whatsapp vendor. Fixes #843
+* mattermost: Update channels of all teams (mattermost)
+
+This release couldn't exist without the following contributors:
+@42wim, @Helcaraxan, @chotaire, @qaisjp, @dajohi, @kousu
+
+# v1.14.4
+
+## Bugfix
+* mattermost: Add Id to EditMessage (mattermost). Fixes #802
+* mattermost: Fix panic on nil message.Post (mattermost). Fixes #804
+* mattermost: Handle unthreaded messages (mattermost). Fixes #803
+* mattermost: Use paging in initUser and UpdateUsers (mattermost)
+* slack: Add lacking clean-up in Slack synchronisation (#811)
+* slack: Disable user lookups on delete messages (slack) (#812)
+
+# v1.14.3
+
+## Bugfix
+* irc: Fix deadlock on reconnect (irc). Closes #757
+
 # v1.14.2
 
 ## Bugfix

contrib/outmessage-irccolors.tengo

@@ -0,0 +1,7 @@
+// See https://github.com/42wim/matterbridge/issues/798
+
+// if we're not sending to an irc bridge we strip the IRC colors
+if outProtocol != "irc" {
+    re := text.re_compile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
+    msgText=re.replace(msgText,"")
+}

contrib/remotenickformat-zerowidth.tengo

@@ -0,0 +1,16 @@
+/*
+This script will return the nick except with multi-character usernames
+containing a zero-width space between the first and second character letter.
+
+Single character usernames will be left untouched.
+
+This is useful to prevent remote users from nickalerting
+IRC users of the same name when the remote user speaks.
+
+This result can be used in {TENGO} in RemoteNickFormat.
+*/
+
+result = nick
+if len(nick) > 1 {
+    result = string(nick[0]) + "​" + nick[1:]
+}

contrib/remotenickformat.tengo

@@ -0,0 +1,9 @@
+/*
+This script will return the current time in kitchen format if the protocol (of the remote bridge) isn't irc
+See https://github.com/d5/tengo/blob/master/docs/stdlib-times.md
+This result can be used in {TENGO} in RemoteNickFormat
+*/
+times := import("times")
+if protocol != "irc" {
+   result=times.time_format(times.now(),times.format_kitchen)
+}

gateway/bridgemap/bridgemap.go

@@ -3,35 +3,41 @@ package bridgemap
 import (
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/api"
-	"github.com/42wim/matterbridge/bridge/discord"
-	"github.com/42wim/matterbridge/bridge/gitter"
-	"github.com/42wim/matterbridge/bridge/irc"
-	"github.com/42wim/matterbridge/bridge/matrix"
-	"github.com/42wim/matterbridge/bridge/mattermost"
-	"github.com/42wim/matterbridge/bridge/rocketchat"
-	"github.com/42wim/matterbridge/bridge/slack"
-	"github.com/42wim/matterbridge/bridge/sshchat"
-	"github.com/42wim/matterbridge/bridge/steam"
-	"github.com/42wim/matterbridge/bridge/telegram"
-	"github.com/42wim/matterbridge/bridge/whatsapp"
-	"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"
+	bwhatsapp "github.com/42wim/matterbridge/bridge/whatsapp"
+	bxmpp "github.com/42wim/matterbridge/bridge/xmpp"
+	bzulip "github.com/42wim/matterbridge/bridge/zulip"
 )
 
-var FullMap = map[string]bridge.Factory{
-	"api":          api.New,
-	"discord":      bdiscord.New,
-	"gitter":       bgitter.New,
-	"irc":          birc.New,
-	"mattermost":   bmattermost.New,
-	"matrix":       bmatrix.New,
-	"rocketchat":   brocketchat.New,
-	"slack-legacy": bslack.NewLegacy,
-	"slack":        bslack.New,
-	"sshchat":      bsshchat.New,
-	"steam":        bsteam.New,
-	"telegram":     btelegram.New,
-	"whatsapp":     bwhatsapp.New,
-	"xmpp":         bxmpp.New,
-	"zulip":        bzulip.New,
-}
+var (
+	FullMap = map[string]bridge.Factory{
+		"api":          api.New,
+		"discord":      bdiscord.New,
+		"gitter":       bgitter.New,
+		"irc":          birc.New,
+		"mattermost":   bmattermost.New,
+		"matrix":       bmatrix.New,
+		"rocketchat":   brocketchat.New,
+		"slack-legacy": bslack.NewLegacy,
+		"slack":        bslack.New,
+		"sshchat":      bsshchat.New,
+		"steam":        bsteam.New,
+		"telegram":     btelegram.New,
+		"whatsapp":     bwhatsapp.New,
+		"xmpp":         bxmpp.New,
+		"zulip":        bzulip.New,
+	}
+
+	UserTypingSupport = map[string]struct{}{
+		"slack": {},
+	}
+)

gateway/gateway.go

@@ -9,6 +9,7 @@ import (
 
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/internal"
 	"github.com/d5/tengo/script"
 	"github.com/d5/tengo/stdlib"
 	lru "github.com/hashicorp/golang-lru"
@@ -331,6 +332,11 @@ func (gw *Gateway) modifyUsername(msg *config.Message, dest *bridge.Bridge) stri
 	nick = strings.Replace(nick, "{LABEL}", br.GetString("Label"), -1)
 	nick = strings.Replace(nick, "{NICK}", msg.Username, -1)
 	nick = strings.Replace(nick, "{CHANNEL}", msg.Channel, -1)
+	tengoNick, err := gw.modifyUsernameTengo(msg, br)
+	if err != nil {
+		gw.logger.Errorf("modifyUsernameTengo error: %s", err)
+	}
+	nick = strings.Replace(nick, "{TENGO}", tengoNick, -1) //nolint:gocritic
 	return nick
 }
 
@@ -347,6 +353,9 @@ func (gw *Gateway) modifyMessage(msg *config.Message) {
 	if err := modifyMessageTengo(gw.BridgeValues().General.TengoModifyMessage, msg); err != nil {
 		gw.logger.Errorf("TengoModifyMessage failed: %s", err)
 	}
+	if err := modifyMessageTengo(gw.BridgeValues().Tengo.Message, msg); err != nil {
+		gw.logger.Errorf("Tengo.Message failed: %s", err)
+	}
 
 	// replace :emoji: to unicode
 	msg.Text = emojilib.Replace(msg.Text)
@@ -421,6 +430,11 @@ func (gw *Gateway) SendMessage(
 		msg.ParentID = "msg-parent-not-found"
 	}
 
+	err := gw.modifySendMessageTengo(rmsg, &msg, dest)
+	if err != nil {
+		gw.logger.Errorf("modifySendMessageTengo: %s", err)
+	}
+
 	// if we are using mattermost plugin account, send messages to MattermostPlugin channel
 	// that can be picked up by the mattermost matterbridge plugin
 	if dest.Account == "mattermost.plugin" {
@@ -503,3 +517,77 @@ func modifyMessageTengo(filename string, msg *config.Message) error {
 	msg.Username = c.Get("msgUsername").String()
 	return nil
 }
+
+func (gw *Gateway) modifyUsernameTengo(msg *config.Message, br *bridge.Bridge) (string, error) {
+	filename := gw.BridgeValues().Tengo.RemoteNickFormat
+	if filename == "" {
+		return "", nil
+	}
+	res, err := ioutil.ReadFile(filename)
+	if err != nil {
+		return "", err
+	}
+	s := script.New(res)
+	s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))
+	_ = s.Add("result", "")
+	_ = s.Add("msgText", msg.Text)
+	_ = s.Add("msgUsername", msg.Username)
+	_ = s.Add("nick", msg.Username)
+	_ = s.Add("msgAccount", msg.Account)
+	_ = s.Add("msgChannel", msg.Channel)
+	_ = s.Add("channel", msg.Channel)
+	_ = s.Add("msgProtocol", msg.Protocol)
+	_ = s.Add("remoteAccount", br.Account)
+	_ = s.Add("protocol", br.Protocol)
+	_ = s.Add("bridge", br.Name)
+	_ = s.Add("gateway", gw.Name)
+	c, err := s.Compile()
+	if err != nil {
+		return "", err
+	}
+	if err := c.Run(); err != nil {
+		return "", err
+	}
+	return c.Get("result").String(), nil
+}
+
+func (gw *Gateway) modifySendMessageTengo(origmsg *config.Message, msg *config.Message, br *bridge.Bridge) error {
+	filename := gw.BridgeValues().Tengo.OutMessage
+	var res []byte
+	var err error
+	if filename == "" {
+		res, err = internal.Asset("tengo/outmessage.tengo")
+		if err != nil {
+			return err
+		}
+	} else {
+		res, err = ioutil.ReadFile(filename)
+		if err != nil {
+			return err
+		}
+	}
+	s := script.New(res)
+	s.SetImports(stdlib.GetModuleMap(stdlib.AllModuleNames()...))
+	_ = s.Add("inAccount", origmsg.Account)
+	_ = s.Add("inProtocol", origmsg.Protocol)
+	_ = s.Add("inChannel", origmsg.Channel)
+	_ = s.Add("inGateway", origmsg.Gateway)
+	_ = s.Add("inEvent", origmsg.Event)
+	_ = s.Add("outAccount", br.Account)
+	_ = s.Add("outProtocol", br.Protocol)
+	_ = s.Add("outChannel", msg.Channel)
+	_ = s.Add("outGateway", gw.Name)
+	_ = s.Add("outEvent", msg.Event)
+	_ = s.Add("msgText", msg.Text)
+	_ = s.Add("msgUsername", msg.Username)
+	c, err := s.Compile()
+	if err != nil {
+		return err
+	}
+	if err := c.Run(); err != nil {
+		return err
+	}
+	msg.Text = c.Get("msgText").String()
+	msg.Username = c.Get("msgUsername").String()
+	return nil
+}

gateway/handlers.go

@@ -14,6 +14,7 @@ import (
 
 	"github.com/42wim/matterbridge/bridge"
 	"github.com/42wim/matterbridge/bridge/config"
+	"github.com/42wim/matterbridge/gateway/bridgemap"
 )
 
 // handleEventFailure handles failures and reconnects bridges.
@@ -190,6 +191,14 @@ func (gw *Gateway) ignoreEvent(event string, dest *bridge.Bridge) bool {
 func (gw *Gateway) handleMessage(rmsg *config.Message, dest *bridge.Bridge) []*BrMsgID {
 	var brMsgIDs []*BrMsgID
 
+	// Not all bridges support "user is typing" indications so skip the message
+	// if the targeted bridge does not support it.
+	if rmsg.Event == config.EventUserTyping {
+		if _, ok := bridgemap.UserTypingSupport[dest.Protocol]; !ok {
+			return nil
+		}
+	}
+
 	// if we have an attached file, or other info
 	if rmsg.Extra != nil && len(rmsg.Extra[config.EventFileFailureSize]) != 0 && rmsg.Text == "" {
 		return brMsgIDs

gateway/router.go

@@ -125,7 +125,8 @@ func (r *Router) handleReceive() {
 		r.handleEventGetChannelMembers(&msg)
 		r.handleEventFailure(&msg)
 		r.handleEventRejoinChannels(&msg)
-		idx := 0
+
+		filesHandled := false
 		for _, gw := range r.Gateways {
 			// record all the message ID's of the different bridges
 			var msgIDs []*BrMsgID
@@ -134,17 +135,26 @@ func (r *Router) handleReceive() {
 			}
 			msg.Timestamp = time.Now()
 			gw.modifyMessage(&msg)
-			if idx == 0 {
+			if !filesHandled {
 				gw.handleFiles(&msg)
+				filesHandled = true
 			}
 			for _, br := range gw.Bridges {
 				msgIDs = append(msgIDs, gw.handleMessage(&msg, br)...)
 			}
-			// only add the message ID if it doesn't already exists
-			if _, ok := gw.Messages.Get(msg.Protocol + " " + msg.ID); !ok && msg.ID != "" {
-				gw.Messages.Add(msg.Protocol+" "+msg.ID, msgIDs)
+
+			if msg.ID != "" {
+				_, exists := gw.Messages.Get(msg.Protocol + " " + msg.ID)
+
+				// Only add the message ID if it doesn't already exist
+				//
+				// For some bridges we always add/update the message ID.
+				// This is necessary as msgIDs will change if a bridge returns
+				// a different ID in response to edits.
+				if !exists || msg.Protocol == "discord" {
+					gw.Messages.Add(msg.Protocol+" "+msg.ID, msgIDs)
+				}
 			}
-			idx++
 		}
 	}
 }

go.mod

@@ -3,36 +3,33 @@ module github.com/42wim/matterbridge
 require (
 	github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557
 	github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f
-	github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14 // indirect
 	github.com/Jeffail/gabs v1.1.1 // indirect
 	github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329
+	github.com/Rhymen/go-whatsapp v0.0.2
 	github.com/bwmarrin/discordgo v0.19.0
-	github.com/d5/tengo v1.20.0
+	// github.com/bwmarrin/discordgo v0.19.0
+	github.com/d5/tengo v1.24.1
 	github.com/dfordsoft/golib v0.0.0-20180902042739-76ee6ab99bec
 	github.com/fsnotify/fsnotify v1.4.7
 	github.com/go-telegram-bot-api/telegram-bot-api v4.6.5-0.20181225215658-ec221ba9ea45+incompatible
-	github.com/google/gops v0.3.5
+	github.com/google/gops v0.3.6
 	github.com/gopackage/ddp v0.0.0-20170117053602-652027933df4 // indirect
 	github.com/gopherjs/gopherjs v0.0.0-20180628210949-0892b62f0d9f // indirect
-	github.com/gorilla/schema v1.0.2
+	github.com/gorilla/schema v1.1.0
 	github.com/gorilla/websocket v1.4.0
-	github.com/hashicorp/golang-lru v0.5.0
+	github.com/hashicorp/golang-lru v0.5.1
 	github.com/hpcloud/tail v1.0.0 // indirect
 	github.com/jpillora/backoff v0.0.0-20180909062703-3050d21c67d7
 	github.com/jtolds/gls v4.2.1+incompatible // indirect
-	github.com/kardianos/osext v0.0.0-20170510131534-ae77be60afb1 // indirect
-	github.com/kr/pretty v0.1.0 // indirect
-	github.com/labstack/echo/v4 v4.0.0
+	github.com/labstack/echo/v4 v4.1.6
 	github.com/lrstanley/girc v0.0.0-20190210212025-51b8e096d398
 	github.com/lusis/go-slackbot v0.0.0-20180109053408-401027ccfef5 // indirect
 	github.com/lusis/slack-test v0.0.0-20180109053238-3c758769bfa6 // indirect
 	github.com/matterbridge/Rocket.Chat.Go.SDK v0.0.0-20190210153444-cc9d05784d5d
-	github.com/matterbridge/go-whatsapp v0.0.1-0.20190301204034-f2f1b29d441b
 	github.com/matterbridge/go-xmpp v0.0.0-20180529212104-cd19799fba91
 	github.com/matterbridge/gomatrix v0.0.0-20190102230110-6f9631ca6dea
 	github.com/matterbridge/gozulipbot v0.0.0-20190212232658-7aa251978a18
 	github.com/matterbridge/logrus-prefixed-formatter v0.0.0-20180806162718-01618749af61
-	github.com/matterbridge/mautrix-whatsapp v0.0.0-20190301210046-3539cf52ed6e
 	github.com/mattermost/mattermost-server v5.5.0+incompatible
 	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b // indirect
 	github.com/mreiferson/go-httpclient v0.0.0-20160630210159-31f0106b4474 // indirect
@@ -42,33 +39,31 @@ require (
 	github.com/nlopes/slack v0.5.0
 	github.com/onsi/ginkgo v1.6.0 // indirect
 	github.com/onsi/gomega v1.4.1 // indirect
-	github.com/paulrosania/go-charset v0.0.0-20151028000031-621bb39fcc83
+	github.com/paulrosania/go-charset v0.0.0-20190326053356-55c9d7a5834c
 	github.com/pborman/uuid v0.0.0-20160216163710-c55201b03606 // indirect
 	github.com/peterhellberg/emojilib v0.0.0-20190124112554-c18758d55320
-	github.com/pkg/errors v0.8.0 // indirect
 	github.com/rs/xid v1.2.1
 	github.com/russross/blackfriday v1.5.2
 	github.com/saintfish/chardet v0.0.0-20120816061221-3af4cd4741ca
 	github.com/shazow/ssh-chat v0.0.0-20190125184227-81d7e1686296
-	github.com/sirupsen/logrus v1.3.0
+	github.com/sirupsen/logrus v1.4.2
 	github.com/smartystreets/assertions v0.0.0-20180803164922-886ec427f6b9 // indirect
 	github.com/smartystreets/goconvey v0.0.0-20180222194500-ef6db91d284a // indirect
-	github.com/spf13/viper v1.3.1
+	github.com/spf13/viper v1.4.0
 	github.com/stretchr/testify v1.3.0
 	github.com/technoweenie/multipartstreamer v1.0.1 // indirect
 	github.com/x-cray/logrus-prefixed-formatter v0.5.2 // indirect
-	github.com/zfjagann/golang-ring v0.0.0-20190106091943-a88bb6aef447
+	github.com/zfjagann/golang-ring v0.0.0-20190304061218-d34796e0a6c2
 	gitlab.com/golang-commonmark/html v0.0.0-20180917080848-cfaf75183c4a // indirect
 	gitlab.com/golang-commonmark/linkify v0.0.0-20180917065525-c22b7bdb1179 // indirect
 	gitlab.com/golang-commonmark/markdown v0.0.0-20181102083822-772775880e1f
 	gitlab.com/golang-commonmark/mdurl v0.0.0-20180912090424-e5bce34c34f2 // indirect
 	gitlab.com/golang-commonmark/puny v0.0.0-20180912090636-2cd490539afe // indirect
 	gitlab.com/opennota/wd v0.0.0-20180912061657-c5d65f63c638 // indirect
-	go.uber.org/atomic v1.3.2 // indirect
-	go.uber.org/multierr v1.1.0 // indirect
-	go.uber.org/zap v1.9.1 // indirect
-	golang.org/x/image v0.0.0-20190220214146-31aff87c08e9
+	golang.org/x/image v0.0.0-20190616094056-33659d3de4f5
 	gopkg.in/fsnotify.v1 v1.4.7 // indirect
 	gopkg.in/natefinch/lumberjack.v2 v2.0.0 // indirect
 	gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7 // indirect
 )
+
+replace github.com/bwmarrin/discordgo v0.19.0 => github.com/MOZGIII/discordgo v0.19.1-0.20190812115637-1e74183814f9

go.sum

@@ -1,22 +1,40 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
 github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557 h1:IZtuWGfzQnKnCSu+vl8WGLhpVQ5Uvy3rlSwqXSg+sQg=
 github.com/42wim/go-gitter v0.0.0-20170828205020-017310c2d557/go.mod h1:jL0YSXMs/txjtGJ4PWrmETOk6KUHMDPMshgQZlTeB3Y=
 github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f h1:2dk3eOnYllh+wUOuDhOoC2vUVoJF/5z478ryJ+wzEII=
 github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f/go.mod h1:4a58ifQTEe2uwwsaqbh3i2un5/CBPg+At/qHpt18Tmk=
-github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14 h1:v/zr4ns/4sSahF9KBm4Uc933bLsEEv7LuT63CJ019yo=
-github.com/BurntSushi/toml v0.0.0-20170318202913-d94612f9fc14/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
 github.com/Jeffail/gabs v1.1.1 h1:V0uzR08Hj22EX8+8QMhyI9sX2hwRu+/RJhJUmnwda/E=
 github.com/Jeffail/gabs v1.1.1/go.mod h1:6xMvQMK4k33lb7GUUpaAPh6nKMmemQeg5d4gn7/bOXc=
+github.com/MOZGIII/discordgo v0.19.1-0.20190812115637-1e74183814f9 h1:2AlsZSdWfhhuyzNgRejZDkkLq1cAA2K8TaMoadSXeJE=
+github.com/MOZGIII/discordgo v0.19.1-0.20190812115637-1e74183814f9/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVOwN61zSZ0r4Q=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
 github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329 h1:xZBoq249G9MSt+XuY7sVQzcfONJ6IQuwpCK+KAaOpnY=
 github.com/Philipp15b/go-steam v1.0.1-0.20180818081528-681bd9573329/go.mod h1:HuVM+sZFzumUdKPWiz+IlCMb4RdsKdT3T+nQBKL+sYg=
+github.com/Rhymen/go-whatsapp v0.0.0/go.mod h1:rdQr95g2C1xcOfM7QGOhza58HeI3I+tZ/bbluv7VazA=
+github.com/Rhymen/go-whatsapp v0.0.2 h1:MelwdquHuuNObBGV7CpXbky2aVdilx/CwiXMwZvS74U=
+github.com/Rhymen/go-whatsapp v0.0.2/go.mod h1:qf/2PQi82Okxw/igghu/oMGzTeUYuKBq1JNo3tdQyNg=
+github.com/Rhymen/go-whatsapp/examples/echo v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:zgCiQtBtZ4P4gFWvwl9aashsdwOcbb/EHOGRmSzM8ME=
+github.com/Rhymen/go-whatsapp/examples/restoreSession v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:5sCUSpG616ZoSJhlt9iBNI/KXBqrVLcNUJqg7J9+8pU=
+github.com/Rhymen/go-whatsapp/examples/sendImage v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:RdiyhanVEGXTam+mZ3k6Y3VDCCvXYCwReOoxGozqhHw=
+github.com/Rhymen/go-whatsapp/examples/sendTextMessages v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:suwzklatySS3Q0+NCxCDh5hYfgXdQUWU1DNcxwAxStM=
+github.com/StackExchange/wmi v0.0.0-20170410192909-ea383cf3ba6e/go.mod h1:3eOhrUMpNV+6aFIbp5/iudMxNCF27Vw2OZgy4xEx0Fg=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
 github.com/alexcesaro/log v0.0.0-20150915221235-61e686294e58/go.mod h1:YNfsMyWSs+h+PaYkxGeMVmVCX75Zj/pqdjbu12ciCYE=
 github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
-github.com/bwmarrin/discordgo v0.19.0 h1:kMED/DB0NR1QhRcalb85w0Cu3Ep2OrGAqZH1R5awQiY=
-github.com/bwmarrin/discordgo v0.19.0/go.mod h1:O9S4p+ofTFwB02em7jkpkV8M3R0/PUVOwN61zSZ0r4Q=
+github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
+github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
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@@ -78,8 +120,6 @@ github.com/magiconair/properties v1.8.0 h1:LLgXmsheXeRoUOBOjtwPQCWIYqM/LU1ayDtDe
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 golang.org/x/crypto v0.0.0-20181030102418-4d3f4d9ffa16/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
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@@ -222,11 +320,13 @@ gopkg.in/fsnotify.v1 v1.4.7 h1:xOHLXZwVvI9hhs+cLKq5+I5onOuwQLhQwiu63xxlHs4=
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 gopkg.in/tomb.v1 v1.0.0-20141024135613-dd632973f1e7/go.mod h1:dt/ZhP58zS4L8KSrWDmTeBkI65Dw0HsyUHuEVlX15mw=
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internal/bindata.go

@@ -0,0 +1,288 @@
+// Code generated by go-bindata. DO NOT EDIT.
+// sources:
+// tengo/outmessage.tengo
+
+package internal
+
+
+import (
+	"bytes"
+	"compress/gzip"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+)
+
+func bindataRead(data []byte, name string) ([]byte, error) {
+	gz, err := gzip.NewReader(bytes.NewBuffer(data))
+	if err != nil {
+		return nil, fmt.Errorf("Read %q: %v", name, err)
+	}
+
+	var buf bytes.Buffer
+	_, err = io.Copy(&buf, gz)
+	clErr := gz.Close()
+
+	if err != nil {
+		return nil, fmt.Errorf("Read %q: %v", name, err)
+	}
+	if clErr != nil {
+		return nil, err
+	}
+
+	return buf.Bytes(), nil
+}
+
+
+type asset struct {
+	bytes []byte
+	info  fileInfoEx
+}
+
+type fileInfoEx interface {
+	os.FileInfo
+	MD5Checksum() string
+}
+
+type bindataFileInfo struct {
+	name        string
+	size        int64
+	mode        os.FileMode
+	modTime     time.Time
+	md5checksum string
+}
+
+func (fi bindataFileInfo) Name() string {
+	return fi.name
+}
+func (fi bindataFileInfo) Size() int64 {
+	return fi.size
+}
+func (fi bindataFileInfo) Mode() os.FileMode {
+	return fi.mode
+}
+func (fi bindataFileInfo) ModTime() time.Time {
+	return fi.modTime
+}
+func (fi bindataFileInfo) MD5Checksum() string {
+	return fi.md5checksum
+}
+func (fi bindataFileInfo) IsDir() bool {
+	return false
+}
+func (fi bindataFileInfo) Sys() interface{} {
+	return nil
+}
+
+var _bindataTengoOutmessagetengo = []byte(
+	"\x1f\x8b\x08\x00\x00\x00\x00\x00\x00\xff\xc4\x91\x3d\x8f\xda\x40\x10\x86\xfb\xfd\x15\x13\x37\xb1\x2d\x07\xe7\xa3" +
+	"\xb3\x64\x59\x11\x45\x94\x2e\x8a\x92\x0a\xd0\xb1\xac\x07\x33\xd2\x7a\xc7\x1a\x8f\x31\x88\xe3\xbf\x9f\xcc\x01\x47" +
+	"\x7f\xc5\x75\xef\xae\x9e\x9d\x77\x1f\x4d\x9e\x9a\xbd\x15\xb2\x1b\x8f\x3d\xd8\xbd\x25\x3f\x45\x30\x82\xb6\xfe\xc2" +
+	"\xc1\x1f\x0b\x43\xe1\xa7\x73\x3c\x04\xcd\x80\xc2\x1f\x61\x65\xc7\x7e\xca\xf3\x9d\x0d\x01\x2f\xf1\x97\x55\x1c\xed" +
+	"\xd1\xf0\xa0\x77\x98\x07\x7d\xa3\x79\xd0\x3b\xce\x83\xde\xf8\xd7\x9e\x51\x48\xb1\x30\x6d\xdf\xfc\xc3\x83\x66\xd0" +
+	"\xf6\xcd\xff\x1e\x25\xd8\x16\x4d\x9a\x1b\xa3\x78\x50\x28\x4a\xa0\xb6\x63\xd1\x38\x9a\xce\x51\x62\x4c\x9e\x43\xaf" +
+	"\x42\x1d\x90\x38\x70\xec\x59\xfa\xe9\x8e\xb6\x30\xe2\x67\x41\x08\xac\xd0\x63\xa8\x29\x34\xa0\x0c\x36\x5c\xc0\x8d" +
+	"\x50\xdd\x20\x8c\x78\x7d\xac\x3b\x84\xdf\x7f\xe7\xb7\x01\xb4\x7d\xd0\x84\xb2\x84\x88\xc4\x45\x70\x32\x00\x00\x82" +
+	"\xd3\x3f\xa6\xfe\x99\xe0\x93\xe3\xb6\x23\x8f\xf1\x7a\x79\xf8\xfa\x23\xae\x8a\x65\x7d\xfa\x96\x7d\x3f\xc7\x55\x91" +
+	"\x5d\x63\x52\x25\xd5\xf3\x62\x51\xb8\xa0\xe2\x8b\xd5\x6a\x9d\x5c\xc6\x5c\x4d\x4b\xc1\x99\x60\xe7\xad\xc3\xf8\x26" +
+	"\x1f\x45\x89\x39\x9b\xf7\x6b\xe4\x29\x6d\x1f\x57\x00\x9f\x3e\xc6\x24\xcd\xcd\x4b\x00\x00\x00\xff\xff\x40\xb8\x54" +
+	"\xb8\x64\x02\x00\x00")
+
+func bindataTengoOutmessagetengoBytes() ([]byte, error) {
+	return bindataRead(
+		_bindataTengoOutmessagetengo,
+		"tengo/outmessage.tengo",
+	)
+}
+
+
+
+func bindataTengoOutmessagetengo() (*asset, error) {
+	bytes, err := bindataTengoOutmessagetengoBytes()
+	if err != nil {
+		return nil, err
+	}
+
+	info := bindataFileInfo{
+		name: "tengo/outmessage.tengo",
+		size: 612,
+		md5checksum: "",
+		mode: os.FileMode(420),
+		modTime: time.Unix(1555622139, 0),
+	}
+
+	a := &asset{bytes: bytes, info: info}
+
+	return a, nil
+}
+
+
+//
+// Asset loads and returns the asset for the given name.
+// It returns an error if the asset could not be found or
+// could not be loaded.
+//
+func Asset(name string) ([]byte, error) {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	if f, ok := _bindata[cannonicalName]; ok {
+		a, err := f()
+		if err != nil {
+			return nil, fmt.Errorf("Asset %s can't read by error: %v", name, err)
+		}
+		return a.bytes, nil
+	}
+	return nil, &os.PathError{Op: "open", Path: name, Err: os.ErrNotExist}
+}
+
+//
+// MustAsset is like Asset but panics when Asset would return an error.
+// It simplifies safe initialization of global variables.
+// nolint: deadcode
+//
+func MustAsset(name string) []byte {
+	a, err := Asset(name)
+	if err != nil {
+		panic("asset: Asset(" + name + "): " + err.Error())
+	}
+
+	return a
+}
+
+//
+// AssetInfo loads and returns the asset info for the given name.
+// It returns an error if the asset could not be found or could not be loaded.
+//
+func AssetInfo(name string) (os.FileInfo, error) {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	if f, ok := _bindata[cannonicalName]; ok {
+		a, err := f()
+		if err != nil {
+			return nil, fmt.Errorf("AssetInfo %s can't read by error: %v", name, err)
+		}
+		return a.info, nil
+	}
+	return nil, &os.PathError{Op: "open", Path: name, Err: os.ErrNotExist}
+}
+
+//
+// AssetNames returns the names of the assets.
+// nolint: deadcode
+//
+func AssetNames() []string {
+	names := make([]string, 0, len(_bindata))
+	for name := range _bindata {
+		names = append(names, name)
+	}
+	return names
+}
+
+//
+// _bindata is a table, holding each asset generator, mapped to its name.
+//
+var _bindata = map[string]func() (*asset, error){
+	"tengo/outmessage.tengo": bindataTengoOutmessagetengo,
+}
+
+//
+// AssetDir returns the file names below a certain
+// directory embedded in the file by go-bindata.
+// For example if you run go-bindata on data/... and data contains the
+// following hierarchy:
+//     data/
+//       foo.txt
+//       img/
+//         a.png
+//         b.png
+// then AssetDir("data") would return []string{"foo.txt", "img"}
+// AssetDir("data/img") would return []string{"a.png", "b.png"}
+// AssetDir("foo.txt") and AssetDir("notexist") would return an error
+// AssetDir("") will return []string{"data"}.
+//
+func AssetDir(name string) ([]string, error) {
+	node := _bintree
+	if len(name) != 0 {
+		cannonicalName := strings.Replace(name, "\\", "/", -1)
+		pathList := strings.Split(cannonicalName, "/")
+		for _, p := range pathList {
+			node = node.Children[p]
+			if node == nil {
+				return nil, &os.PathError{
+					Op: "open",
+					Path: name,
+					Err: os.ErrNotExist,
+				}
+			}
+		}
+	}
+	if node.Func != nil {
+		return nil, &os.PathError{
+			Op: "open",
+			Path: name,
+			Err: os.ErrNotExist,
+		}
+	}
+	rv := make([]string, 0, len(node.Children))
+	for childName := range node.Children {
+		rv = append(rv, childName)
+	}
+	return rv, nil
+}
+
+
+type bintree struct {
+	Func     func() (*asset, error)
+	Children map[string]*bintree
+}
+
+var _bintree = &bintree{Func: nil, Children: map[string]*bintree{
+	"tengo": {Func: nil, Children: map[string]*bintree{
+		"outmessage.tengo": {Func: bindataTengoOutmessagetengo, Children: map[string]*bintree{}},
+	}},
+}}
+
+// RestoreAsset restores an asset under the given directory
+func RestoreAsset(dir, name string) error {
+	data, err := Asset(name)
+	if err != nil {
+		return err
+	}
+	info, err := AssetInfo(name)
+	if err != nil {
+		return err
+	}
+	err = os.MkdirAll(_filePath(dir, filepath.Dir(name)), os.FileMode(0755))
+	if err != nil {
+		return err
+	}
+	err = ioutil.WriteFile(_filePath(dir, name), data, info.Mode())
+	if err != nil {
+		return err
+	}
+	return os.Chtimes(_filePath(dir, name), info.ModTime(), info.ModTime())
+}
+
+// RestoreAssets restores an asset under the given directory recursively
+func RestoreAssets(dir, name string) error {
+	children, err := AssetDir(name)
+	// File
+	if err != nil {
+		return RestoreAsset(dir, name)
+	}
+	// Dir
+	for _, child := range children {
+		err = RestoreAssets(dir, filepath.Join(name, child))
+		if err != nil {
+			return err
+		}
+	}
+	return nil
+}
+
+func _filePath(dir, name string) string {
+	cannonicalName := strings.Replace(name, "\\", "/", -1)
+	return filepath.Join(append([]string{dir}, strings.Split(cannonicalName, "/")...)...)
+}

internal/tengo/outmessage.tengo

@@ -0,0 +1,19 @@
+/*
+variables available 
+read-only:
+inAccount, inProtocol, inChannel, inGateway
+outAccount, outProtocol, outChannel, outGateway
+
+read-write:
+msgText, msgUsername
+*/
+
+text := import("text")
+
+// start - strip irc colors 
+// if we're not sending to an irc bridge we strip the IRC colors
+if inProtocol == "irc" {
+    re := text.re_compile(`\x03(?:\d{1,2}(?:,\d{1,2})?)?|[[:cntrl:]]`)
+    msgText=re.replace(msgText,"")
+}
+// end - strip irc colors

matterbridge.go

@@ -15,7 +15,7 @@ import (
 )
 
 var (
-	version = "1.14.2"
+	version = "1.15.2-dev"
 	githash string
 
 	flagConfig  = flag.String("conf", "matterbridge.toml", "config file")

matterbridge.toml.sample

@@ -1,5 +1,7 @@
 #This is configuration for matterbridge.
 #WARNING: as this file contains credentials, be sure to set correct file permissions
+#See https://github.com/42wim/matterbridge/wiki/How-to-create-your-config for how to create your config
+#See https://github.com/42wim/matterbridge/wiki/Settings for all settings
 ###################################################################
 #IRC section
 ###################################################################
@@ -27,7 +29,7 @@ UseTLS=false
 #OPTIONAL (default false)
 UseSASL=false
 
-#Enable to not verify the certificate on your irc server. i
+#Enable to not verify the certificate on your irc server.
 #e.g. when using selfsigned certificates
 #OPTIONAL (default false)
 SkipTLSVerify=true
@@ -155,6 +157,11 @@ RemoteNickFormat="[{PROTOCOL}] <{NICK}> "
 #OPTIONAL (default false)
 ShowJoinPart=false
 
+#Enable to show verbose users joins/parts (ident@host) from other bridges
+#Currently works for messages from the following bridges: irc
+#OPTIONAL (default false)
+VerboseJoinPart=false
+
 #Do not send joins/parts to other bridges
 #Currently works for messages from the following bridges: irc, mattermost, slack
 #OPTIONAL (default false)
@@ -270,98 +277,6 @@ StripNick=false
 #OPTIONAL (default false)
 ShowTopicChange=false
 
-###################################################################
-#hipchat section
-###################################################################
-#Go to https://www.hipchat.com/account/xmpp this will show you the necessary data
-#to fill in the section below
-[xmpp.hipchat]
-#xmpp server to connect to. 
-#REQUIRED
-Server="chat.hipchat.com:5222"
-
-#Jabber ID
-#REQUIRED
-Jid="12345_12345@chat.hipchat.com"
-
-#Password (your hipchat password)
-#REQUIRED
-Password="yourpass"
-
-#Conference (MUC) domain
-#REQUIRED
-Muc="conf.hipchat.com"
-
-#Room nickname
-#REQUIRED
-Nick="yourlogin"
-
-## RELOADABLE SETTINGS
-## Settings below can be reloaded by editing the file
-
-#Nicks you want to ignore. 
-#Regular expressions supported
-#Messages from those users will not be sent to other bridges.
-#OPTIONAL
-IgnoreNicks="spammer1 spammer2"
-
-#Messages you want to ignore. 
-#Messages matching these regexp will be ignored and not sent to other bridges
-#See https://regex-golang.appspot.com/assets/html/index.html for more regex info
-#OPTIONAL (example below ignores messages starting with ~~ or messages containing badword
-IgnoreMessages="^~~ badword"
-
-#messages you want to replace.
-#it replaces outgoing messages from the bridge.
-#so you need to place it by the sending bridge definition.
-#regular expressions supported
-#some examples:
-#this replaces cat => dog and sleep => awake
-#replacemessages=[ ["cat","dog"], ["sleep","awake"] ]
-#this replaces every number with number.  123 => numbernumbernumber
-#replacemessages=[ ["[0-9]","number"] ]
-#optional (default empty)
-ReplaceMessages=[ ["cat","dog"] ]
-
-#nicks you want to replace.
-#see replacemessages for syntaxa
-#optional (default empty)
-ReplaceNicks=[ ["user--","user"] ]
-
-#Extractnicks is used to for example rewrite messages from other relaybots
-#See https://github.com/42wim/matterbridge/issues/713 and https://github.com/42wim/matterbridge/issues/466
-#some examples:
-#this replaces a message like "Relaybot: <relayeduser> something interesting" to "relayeduser: something interesting"
-#ExtractNicks=[ [ "Relaybot", "<(.*?)>\\s+" ] ]
-#you can use multiple entries for multiplebots
-#this also replaces a message like "otherbot: (relayeduser) something else" to "relayeduser: something else"
-#ExtractNicks=[ [ "Relaybot", "<(.*?)>\\s+" ],[ "otherbot","\\((.*?)\\)\\s+" ]
-#OPTIONAL (default empty)
-ExtractNicks=[ ["otherbot","<(.*?)>\\s+" ] ]
-
-#extra label that can be used in the RemoteNickFormat
-#optional (default empty)
-Label=""
-
-#RemoteNickFormat defines how remote users appear on this bridge 
-#See [general] config section for default options
-RemoteNickFormat="[{PROTOCOL}/{BRIDGE}] <{NICK}> "
-
-#Enable to show users joins/parts from other bridges 
-#Currently works for messages from the following bridges: irc, mattermost, slack, discord
-#OPTIONAL (default false)
-ShowJoinPart=false
-
-#StripNick only allows alphanumerical nicks. See https://github.com/42wim/matterbridge/issues/285
-#It will strip other characters from the nick
-#OPTIONAL (default false)
-StripNick=false
-
-#Enable to show topic changes from other bridges 
-#Only works hiding/show topic changes from slack bridge for now
-#OPTIONAL (default false)
-ShowTopicChange=false
-
 ###################################################################
 #mattermost section
 ###################################################################
@@ -435,6 +350,12 @@ NickFormatter="plain"
 #OPTIONAL (default 4)
 NicksPerRow=4
 
+#Skip the Mattermost server version checks that are normally done when connecting.
+#The usage scenario for this feature would be when the Mattermost instance is hosted behind a
+#reverse proxy that suppresses "non-standard" response headers in flight.
+#OPTIONAL (default false)
+SkipVersionCheck=false
+
 #Whether to prefix messages from other bridges to mattermost with the sender's nick. 
 #Useful if username overrides for incoming webhooks isn't enabled on the 
 #mattermost server. If you set PrefixMessagesWithNick to true, each message 
@@ -1480,6 +1401,7 @@ RemoteNickFormat="{NICK}"
 #The string "{PROTOCOL}" (case sensitive) will be replaced by the protocol used by the bridge
 #The string "{GATEWAY}" (case sensitive) will be replaced by the origin gateway name that is replicating the message.
 #The string "{CHANNEL}" (case sensitive) will be replaced by the origin channel name used by the bridge
+#The string "{TENGO}" (case sensitive) will be replaced by the output of the RemoteNickFormat script under [tengo]
 #OPTIONAL (default empty)
 RemoteNickFormat="[{PROTOCOL}] <{NICK}> "
 
@@ -1529,8 +1451,14 @@ MediaDownloadBlacklist=[".html$",".htm$"]
 #OPTIONAL (default false)
 IgnoreFailureOnStart=false
 
+###################################################################
+#Tengo configuration
+###################################################################
+#More information about tengo on: https://github.com/d5/tengo/blob/master/docs/tutorial.md and
+#https://github.com/d5/tengo/blob/master/docs/stdlib.md
 
-#TengoModifyMessage allows you to specify the location of a tengo (https://github.com/d5/tengo/) script.
+[tengo]
+#InMessage allows you to specify the location of a tengo (https://github.com/d5/tengo/) script.
 #This script will receive every incoming message and can be used to modify the Username and the Text of that message.
 #The script will have the following global variables:
 #to modify: msgUsername and msgText
@@ -1547,10 +1475,42 @@ IgnoreFailureOnStart=false
 #    msgText="replaced by this"
 #    msgUsername="fakeuser"
 #}
-#More information about tengo on: https://github.com/d5/tengo/blob/master/docs/tutorial.md and
-#https://github.com/d5/tengo/blob/master/docs/stdlib.md
 #OPTIONAL (default empty)
-TengoModifyMessage="example.tengo"
+InMessage="example.tengo"
+
+#OutMessage allows you to specify the location of the script that
+#will be invoked on each message being sent to a bridge and can be used to modify the Username
+#and the Text of that message.
+#
+#The script will have the following global variables:
+#read-only:
+#inAccount, inProtocol, inChannel, inGateway, inEvent
+#outAccount, outProtocol, outChannel, outGateway, outEvent
+#
+#read-write:
+#msgText, msgUsername
+#
+#The script is reloaded on every message, so you can modify the script on the fly.
+#
+#The default script in https://github.com/42wim/matterbridge/tree/master/internal/tengo/outmessage.tengo
+#is compiled in and will be executed if no script is specified.
+#OPTIONAL (default empty)
+OutMessage="example.tengo"
+
+
+#RemoteNickFormat allows you to specify the location of a tengo (https://github.com/d5/tengo/) script.
+#The script will have the following global variables:
+#to modify: result
+#to read: channel, bridge, gateway, protocol, nick
+#
+#The result will be set in {TENGO} in the RemoteNickFormat key of every bridge where {TENGO} is specified
+#
+#The script is reloaded on every message, so you can modify the script on the fly.
+#
+#Example script can be found in https://github.com/42wim/matterbridge/tree/master/contrib/remotenickformat.tengo
+#
+#OPTIONAL (default empty)
+RemoteNickFormat="remotenickformat.tengo"
 
 ###################################################################
 #Gateway configuration
@@ -1593,6 +1553,7 @@ enable=true
     # discord    - channel (without the #)
     #            - ID:123456789 (where 123456789 is the channel ID)
     #               (https://github.com/42wim/matterbridge/issues/57)
+    #            - category/channel (without the #) if you're using discord categories to group your channels
     # telegram   - chatid (a large negative number, eg -123456789)
     #             see (https://www.linkedin.com/pulse/telegram-bots-beginners-marco-frau)
     # hipchat    - id_channel (see https://www.hipchat.com/account/xmpp for the correct channel)

matterclient/channels.go

@@ -167,23 +167,42 @@ func (m *MMClient) JoinChannel(channelId string) error { //nolint:golint
 	return nil
 }
 
+func (m *MMClient) UpdateChannelsTeam(teamID string) error {
+	mmchannels, resp := m.Client.GetChannelsForTeamForUser(teamID, m.User.Id, "")
+	if resp.Error != nil {
+		return errors.New(resp.Error.DetailedError)
+	}
+	for idx, t := range m.OtherTeams {
+		if t.Id == teamID {
+			m.Lock()
+			m.OtherTeams[idx].Channels = mmchannels
+			m.Unlock()
+		}
+	}
+
+	mmchannels, resp = m.Client.GetPublicChannelsForTeam(teamID, 0, 5000, "")
+	if resp.Error != nil {
+		return errors.New(resp.Error.DetailedError)
+	}
+	for idx, t := range m.OtherTeams {
+		if t.Id == teamID {
+			m.Lock()
+			m.OtherTeams[idx].MoreChannels = mmchannels
+			m.Unlock()
+		}
+	}
+	return nil
+}
+
 func (m *MMClient) UpdateChannels() error {
-	mmchannels, resp := m.Client.GetChannelsForTeamForUser(m.Team.Id, m.User.Id, "")
-	if resp.Error != nil {
-		return errors.New(resp.Error.DetailedError)
+	if err := m.UpdateChannelsTeam(m.Team.Id); err != nil {
+		return err
 	}
-	m.Lock()
-	m.Team.Channels = mmchannels
-	m.Unlock()
-
-	mmchannels, resp = m.Client.GetPublicChannelsForTeam(m.Team.Id, 0, 5000, "")
-	if resp.Error != nil {
-		return errors.New(resp.Error.DetailedError)
+	for _, t := range m.OtherTeams {
+		if err := m.UpdateChannelsTeam(t.Id); err != nil {
+			return err
+		}
 	}
-
-	m.Lock()
-	m.Team.MoreChannels = mmchannels
-	m.Unlock()
 	return nil
 }
 

matterclient/helpers.go

@@ -132,14 +132,25 @@ func (m *MMClient) initUser() error {
 		return resp.Error
 	}
 	for _, team := range teams {
-		mmusers, resp := m.Client.GetUsersInTeam(team.Id, 0, 50000, "")
+		idx := 0
+		max := 200
+		usermap := make(map[string]*model.User)
+		mmusers, resp := m.Client.GetUsersInTeam(team.Id, idx, max, "")
 		if resp.Error != nil {
 			return errors.New(resp.Error.DetailedError)
 		}
-		usermap := make(map[string]*model.User)
-		for _, user := range mmusers {
-			usermap[user.Id] = user
+		for len(mmusers) > 0 {
+			for _, user := range mmusers {
+				usermap[user.Id] = user
+			}
+			mmusers, resp = m.Client.GetUsersInTeam(team.Id, idx, max, "")
+			if resp.Error != nil {
+				return errors.New(resp.Error.DetailedError)
+			}
+			idx++
+			time.Sleep(time.Millisecond * 200)
 		}
+		m.logger.Infof("found %d users in team %s", len(usermap), team.Name)
 
 		t := &Team{Team: team, Users: usermap, Id: team.Id}
 
@@ -175,15 +186,19 @@ func (m *MMClient) serverAlive(firstConnection bool, b *backoff.Backoff) error {
 		if resp.Error != nil {
 			return fmt.Errorf("%#v", resp.Error.Error())
 		}
-		if firstConnection && !supportedVersion(resp.ServerVersion) {
+		if firstConnection && !m.SkipVersionCheck && !supportedVersion(resp.ServerVersion) {
 			return fmt.Errorf("unsupported mattermost version: %s", resp.ServerVersion)
 		}
-		m.ServerVersion = resp.ServerVersion
-		if m.ServerVersion == "" {
-			m.logger.Debugf("Server not up yet, reconnecting in %s", d)
-			time.Sleep(d)
+		if !m.SkipVersionCheck {
+			m.ServerVersion = resp.ServerVersion
+			if m.ServerVersion == "" {
+				m.logger.Debugf("Server not up yet, reconnecting in %s", d)
+				time.Sleep(d)
+			} else {
+				m.logger.Infof("Found version %s", m.ServerVersion)
+				return nil
+			}
 		} else {
-			m.logger.Infof("Found version %s", m.ServerVersion)
 			return nil
 		}
 	}

matterclient/matterclient.go

@@ -16,14 +16,15 @@ import (
 )
 
 type Credentials struct {
-	Login         string
-	Team          string
-	Pass          string
-	Token         string
-	CookieToken   bool
-	Server        string
-	NoTLS         bool
-	SkipTLSVerify bool
+	Login            string
+	Team             string
+	Pass             string
+	Token            string
+	CookieToken      bool
+	Server           string
+	NoTLS            bool
+	SkipTLSVerify    bool
+	SkipVersionCheck bool
 }
 
 type Message struct {
@@ -220,7 +221,10 @@ func (m *MMClient) WsReceiver() {
 				}
 			}
 			switch msg.Raw.Event {
-			case model.WEBSOCKET_EVENT_USER_ADDED, model.WEBSOCKET_EVENT_USER_REMOVED:
+			case model.WEBSOCKET_EVENT_USER_ADDED,
+				model.WEBSOCKET_EVENT_USER_REMOVED,
+				model.WEBSOCKET_EVENT_CHANNEL_CREATED,
+				model.WEBSOCKET_EVENT_CHANNEL_DELETED:
 				m.MessageChan <- msg
 				continue
 			}

matterclient/messages.go

@@ -83,7 +83,7 @@ func (m *MMClient) DeleteMessage(postId string) error { //nolint:golint
 }
 
 func (m *MMClient) EditMessage(postId string, text string) (string, error) { //nolint:golint
-	post := &model.Post{Message: text}
+	post := &model.Post{Message: text, Id: postId}
 	res, resp := m.Client.UpdatePost(postId, post)
 	if resp.Error != nil {
 		return "", resp.Error

matterclient/users.go

@@ -2,6 +2,7 @@ package matterclient
 
 import (
 	"errors"
+	"time"
 
 	"github.com/mattermost/mattermost-server/model"
 )
@@ -99,15 +100,25 @@ func (m *MMClient) GetUsers() map[string]*model.User {
 }
 
 func (m *MMClient) UpdateUsers() error {
-	mmusers, resp := m.Client.GetUsers(0, 50000, "")
+	idx := 0
+	max := 200
+	mmusers, resp := m.Client.GetUsers(idx, max, "")
 	if resp.Error != nil {
 		return errors.New(resp.Error.DetailedError)
 	}
-	m.Lock()
-	for _, user := range mmusers {
-		m.Users[user.Id] = user
+	for len(mmusers) > 0 {
+		m.Lock()
+		for _, user := range mmusers {
+			m.Users[user.Id] = user
+		}
+		m.Unlock()
+		mmusers, resp = m.Client.GetUsers(idx, max, "")
+		time.Sleep(time.Millisecond * 300)
+		if resp.Error != nil {
+			return errors.New(resp.Error.DetailedError)
+		}
+		idx++
 	}
-	m.Unlock()
 	return nil
 }
 

vendor/github.com/Rhymen/go-whatsapp/.gitignore

@@ -1,2 +1,3 @@
 .idea/
 docs/
+build/

vendor/github.com/Rhymen/go-whatsapp/README.md

@@ -3,7 +3,7 @@ Package rhymen/go-whatsapp implements the WhatsApp Web API to provide a clean in
 
 ## Installation
 ```sh
-go get github.com/rhymen/go-whatsapp
+go get github.com/Rhymen/go-whatsapp
 ```
 
 ## Usage
@@ -30,7 +30,7 @@ The authentication process requires you to scan the qr code, that is send throug
 
 ### Restore
 ```go
-newSess, err := wac.RestoreSession(sess)
+newSess, err := wac.RestoreWithSession(sess)
 ```
 The restore function needs a valid session and returns the new session that was created.
 

vendor/github.com/Rhymen/go-whatsapp/binary/decoder.go

@@ -2,7 +2,7 @@ package binary
 
 import (
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/binary/token"
+	"github.com/Rhymen/go-whatsapp/binary/token"
 	"io"
 	"strconv"
 )

vendor/github.com/Rhymen/go-whatsapp/binary/encoder.go

@@ -2,7 +2,7 @@ package binary
 
 import (
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/binary/token"
+	"github.com/Rhymen/go-whatsapp/binary/token"
 	"math"
 	"strconv"
 	"strings"

vendor/github.com/Rhymen/go-whatsapp/binary/node.go

@@ -2,7 +2,7 @@ package binary
 
 import (
 	"fmt"
-	pb "github.com/matterbridge/go-whatsapp/binary/proto"
+	pb "github.com/Rhymen/go-whatsapp/binary/proto"
 	"github.com/golang/protobuf/proto"
 )
 

vendor/github.com/Rhymen/go-whatsapp/conn.go

@@ -0,0 +1,210 @@
+//Package whatsapp provides a developer API to interact with the WhatsAppWeb-Servers.
+package whatsapp
+
+import (
+	"math/rand"
+	"net/http"
+	"sync"
+	"time"
+
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+)
+
+type metric byte
+
+const (
+	debugLog metric = iota + 1
+	queryResume
+	queryReceipt
+	queryMedia
+	queryChat
+	queryContacts
+	queryMessages
+	presence
+	presenceSubscribe
+	group
+	read
+	chat
+	received
+	pic
+	status
+	message
+	queryActions
+	block
+	queryGroup
+	queryPreview
+	queryEmoji
+	queryMessageInfo
+	spam
+	querySearch
+	queryIdentity
+	queryUrl
+	profile
+	contact
+	queryVcard
+	queryStatus
+	queryStatusUpdate
+	privacyStatus
+	queryLiveLocations
+	liveLocation
+	queryVname
+	queryLabels
+	call
+	queryCall
+	queryQuickReplies
+)
+
+type flag byte
+
+const (
+	ignore flag = 1 << (7 - iota)
+	ackRequest
+	available
+	notAvailable
+	expires
+	skipOffline
+)
+
+/*
+Conn is created by NewConn. Interacting with the initialized Conn is the main way of interacting with our package.
+It holds all necessary information to make the package work internally.
+*/
+type Conn struct {
+	ws       *websocketWrapper
+	listener *listenerWrapper
+
+	connected bool
+	loggedIn  bool
+	wg        *sync.WaitGroup
+
+	session        *Session
+	sessionLock    uint32
+	handler        []Handler
+	msgCount       int
+	msgTimeout     time.Duration
+	Info           *Info
+	Store          *Store
+	ServerLastSeen time.Time
+
+	longClientName  string
+	shortClientName string
+}
+
+type websocketWrapper struct {
+	sync.Mutex
+	conn  *websocket.Conn
+	close chan struct{}
+}
+
+type listenerWrapper struct {
+	sync.RWMutex
+	m map[string]chan string
+}
+
+/*
+Creates a new connection with a given timeout. The websocket connection to the WhatsAppWeb servers get´s established.
+The goroutine for handling incoming messages is started
+*/
+func NewConn(timeout time.Duration) (*Conn, error) {
+	wac := &Conn{
+		handler:    make([]Handler, 0),
+		msgCount:   0,
+		msgTimeout: timeout,
+		Store:      newStore(),
+
+		longClientName:  "github.com/rhymen/go-whatsapp",
+		shortClientName: "go-whatsapp",
+	}
+	return wac, wac.connect()
+}
+
+// connect should be guarded with wsWriteMutex
+func (wac *Conn) connect() (err error) {
+	if wac.connected {
+		return ErrAlreadyConnected
+	}
+	wac.connected = true
+	defer func() { // set connected to false on error
+		if err != nil {
+			wac.connected = false
+		}
+	}()
+
+	dialer := &websocket.Dialer{
+		ReadBufferSize:   25 * 1024 * 1024,
+		WriteBufferSize:  10 * 1024 * 1024,
+		HandshakeTimeout: wac.msgTimeout,
+	}
+
+	headers := http.Header{"Origin": []string{"https://web.whatsapp.com"}}
+	wsConn, _, err := dialer.Dial("wss://web.whatsapp.com/ws", headers)
+	if err != nil {
+		return errors.Wrap(err, "couldn't dial whatsapp web websocket")
+	}
+
+	wsConn.SetCloseHandler(func(code int, text string) error {
+		// from default CloseHandler
+		message := websocket.FormatCloseMessage(code, "")
+		err := wsConn.WriteControl(websocket.CloseMessage, message, time.Now().Add(time.Second))
+
+		// our close handling
+		_, _ = wac.Disconnect()
+		wac.handle(&ErrConnectionClosed{Code: code, Text: text})
+		return err
+	})
+
+	wac.ws = &websocketWrapper{
+		conn:  wsConn,
+		close: make(chan struct{}),
+	}
+
+	wac.listener = &listenerWrapper{
+		m: make(map[string]chan string),
+	}
+
+	wac.wg = &sync.WaitGroup{}
+	wac.wg.Add(2)
+	go wac.readPump()
+	go wac.keepAlive(20000, 60000)
+
+	wac.loggedIn = false
+	return nil
+}
+
+func (wac *Conn) Disconnect() (Session, error) {
+	if !wac.connected {
+		return Session{}, ErrNotConnected
+	}
+	wac.connected = false
+	wac.loggedIn = false
+
+	close(wac.ws.close) //signal close
+	wac.wg.Wait()       //wait for close
+
+	err := wac.ws.conn.Close()
+	wac.ws = nil
+
+	if wac.session == nil {
+		return Session{}, err
+	}
+	return *wac.session, err
+}
+
+func (wac *Conn) keepAlive(minIntervalMs int, maxIntervalMs int) {
+	defer wac.wg.Done()
+
+	for {
+		err := wac.sendKeepAlive()
+		if err != nil {
+			wac.handle(errors.Wrap(err, "keepAlive failed"))
+			//TODO: Consequences?
+		}
+		interval := rand.Intn(maxIntervalMs-minIntervalMs) + minIntervalMs
+		select {
+		case <-time.After(time.Duration(interval) * time.Millisecond):
+		case <-wac.ws.close:
+			return
+		}
+	}
+}

vendor/github.com/Rhymen/go-whatsapp/contact.go

@@ -2,7 +2,7 @@ package whatsapp
 
 import (
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/binary"
+	"github.com/Rhymen/go-whatsapp/binary"
 	"strconv"
 	"time"
 )
@@ -18,21 +18,21 @@ const (
 )
 
 //TODO: filename? WhatsApp uses Store.Contacts for these functions
-//TODO: functions probably shouldn't return a string, maybe build a struct / return json
-//TODO: check for further queries
+// functions probably shouldn't return a string, maybe build a struct / return json
+// check for further queries
 func (wac *Conn) GetProfilePicThumb(jid string) (<-chan string, error) {
 	data := []interface{}{"query", "ProfilePicThumb", jid}
-	return wac.write(data)
+	return wac.writeJson(data)
 }
 
 func (wac *Conn) GetStatus(jid string) (<-chan string, error) {
 	data := []interface{}{"query", "Status", jid}
-	return wac.write(data)
+	return wac.writeJson(data)
 }
 
 func (wac *Conn) SubscribePresence(jid string) (<-chan string, error) {
 	data := []interface{}{"action", "presence", "subscribe", jid}
-	return wac.write(data)
+	return wac.writeJson(data)
 }
 
 func (wac *Conn) Search(search string, count, page int) (*binary.Node, error) {
@@ -84,7 +84,7 @@ func (wac *Conn) Presence(jid string, presence Presence) (<-chan string, error)
 
 func (wac *Conn) Exist(jid string) (<-chan string, error) {
 	data := []interface{}{"query", "exist", jid}
-	return wac.write(data)
+	return wac.writeJson(data)
 }
 
 func (wac *Conn) Emoji() (*binary.Node, error) {

vendor/github.com/Rhymen/go-whatsapp/crypto/hkdf/hkdf.go

@@ -9,7 +9,6 @@ second stage "expands" this key into several additional pseudorandom keys (the o
 package hkdf
 
 import (
-	"crypto/hmac"
 	"crypto/sha256"
 	"fmt"
 	"golang.org/x/crypto/hkdf"
@@ -20,33 +19,29 @@ import (
 Expand expands a given key with the HKDF algorithm.
 */
 func Expand(key []byte, length int, info string) ([]byte, error) {
+	var h io.Reader
 	if info == "" {
-		keyBlock := hmac.New(sha256.New, key)
-		var out, last []byte
-
-		var blockIndex byte = 1
-		for i := 0; len(out) < length; i++ {
-			keyBlock.Reset()
-			//keyBlock.Write(append(append(last, []byte(info)...), blockIndex))
-			keyBlock.Write(last)
-			keyBlock.Write([]byte(info))
-			keyBlock.Write([]byte{blockIndex})
-			last = keyBlock.Sum(nil)
-			blockIndex += 1
-			out = append(out, last...)
-		}
-		return out[:length], nil
+		/*
+			Only used during initial login
+			Pseudorandom Key is provided by server and has not to be created
+		*/
+		h = hkdf.Expand(sha256.New, key, []byte(info))
 	} else {
-		h := hkdf.New(sha256.New, key, nil, []byte(info))
-		out := make([]byte, length)
-		n, err := io.ReadAtLeast(h, out, length)
-		if err != nil {
-			return nil, err
-		}
-		if n != length {
-			return nil, fmt.Errorf("new key to short")
-		}
-
-		return out[:length], nil
+		/*
+			Used every other time
+			Pseudorandom Key is created during kdf.New
+			This is the normal that crypto/hkdf is used
+		*/
+		h = hkdf.New(sha256.New, key, nil, []byte(info))
 	}
+	out := make([]byte, length)
+	n, err := io.ReadAtLeast(h, out, length)
+	if err != nil {
+		return nil, err
+	}
+	if n != length {
+		return nil, fmt.Errorf("new key to short")
+	}
+
+	return out, nil
 }

vendor/github.com/Rhymen/go-whatsapp/errors.go

@@ -0,0 +1,35 @@
+package whatsapp
+
+import (
+	"fmt"
+	"github.com/pkg/errors"
+)
+
+var (
+	ErrAlreadyConnected  = errors.New("already connected")
+	ErrAlreadyLoggedIn   = errors.New("already logged in")
+	ErrInvalidSession    = errors.New("invalid session")
+	ErrLoginInProgress   = errors.New("login or restore already running")
+	ErrNotConnected      = errors.New("not connected")
+	ErrInvalidWsData     = errors.New("received invalid data")
+	ErrConnectionTimeout = errors.New("connection timed out")
+	ErrMissingMessageTag = errors.New("no messageTag specified or to short")
+	ErrInvalidHmac       = errors.New("invalid hmac")
+)
+
+type ErrConnectionFailed struct {
+	Err error
+}
+
+func (e *ErrConnectionFailed) Error() string {
+	return fmt.Sprintf("connection to WhatsApp servers failed: %v", e.Err)
+}
+
+type ErrConnectionClosed struct {
+	Code int
+	Text string
+}
+
+func (e *ErrConnectionClosed) Error() string {
+	return fmt.Sprintf("server closed connection,code: %d,text: %s", e.Code, e.Text)
+}

vendor/github.com/Rhymen/go-whatsapp/go.mod

@@ -0,0 +1,12 @@
+module github.com/Rhymen/go-whatsapp
+
+require (
+	github.com/Rhymen/go-whatsapp/examples/echo v0.0.0-20190325075644-cc2581bbf24d // indirect
+	github.com/Rhymen/go-whatsapp/examples/restoreSession v0.0.0-20190325075644-cc2581bbf24d // indirect
+	github.com/Rhymen/go-whatsapp/examples/sendImage v0.0.0-20190325075644-cc2581bbf24d // indirect
+	github.com/Rhymen/go-whatsapp/examples/sendTextMessages v0.0.0-20190325075644-cc2581bbf24d // indirect
+	github.com/golang/protobuf v1.3.0
+	github.com/gorilla/websocket v1.4.0
+	github.com/pkg/errors v0.8.1
+	golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
+)

vendor/github.com/Rhymen/go-whatsapp/go.sum

@@ -0,0 +1,35 @@
+github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f h1:2dk3eOnYllh+wUOuDhOoC2vUVoJF/5z478ryJ+wzEII=
+github.com/Baozisoftware/qrcode-terminal-go v0.0.0-20170407111555-c0650d8dff0f/go.mod h1:4a58ifQTEe2uwwsaqbh3i2un5/CBPg+At/qHpt18Tmk=
+github.com/Rhymen/go-whatsapp v0.0.0/go.mod h1:rdQr95g2C1xcOfM7QGOhza58HeI3I+tZ/bbluv7VazA=
+github.com/Rhymen/go-whatsapp/examples/echo v0.0.0-20190325075644-cc2581bbf24d h1:m3wkrunHupL9XzzM+JZu1pgoDV1d9LFtD0gedNTHVDU=
+github.com/Rhymen/go-whatsapp/examples/echo v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:zgCiQtBtZ4P4gFWvwl9aashsdwOcbb/EHOGRmSzM8ME=
+github.com/Rhymen/go-whatsapp/examples/restoreSession v0.0.0-20190325075644-cc2581bbf24d h1:muQlzqfZxjptOBjPdv+UoxVMr8Y1rPx7VMGPJIAFc5w=
+github.com/Rhymen/go-whatsapp/examples/restoreSession v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:5sCUSpG616ZoSJhlt9iBNI/KXBqrVLcNUJqg7J9+8pU=
+github.com/Rhymen/go-whatsapp/examples/sendImage v0.0.0-20190325075644-cc2581bbf24d h1:xP//3V77YvHd1cj2Z3ttuQWAvs5WmIwBbjKe/t0g/tM=
+github.com/Rhymen/go-whatsapp/examples/sendImage v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:RdiyhanVEGXTam+mZ3k6Y3VDCCvXYCwReOoxGozqhHw=
+github.com/Rhymen/go-whatsapp/examples/sendTextMessages v0.0.0-20190325075644-cc2581bbf24d h1:IRmRE0SPMByczwE2dhnTcVojje3w2TCSKwFrboLUbDg=
+github.com/Rhymen/go-whatsapp/examples/sendTextMessages v0.0.0-20190325075644-cc2581bbf24d/go.mod h1:suwzklatySS3Q0+NCxCDh5hYfgXdQUWU1DNcxwAxStM=
+github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
+github.com/golang/protobuf v1.3.0 h1:kbxbvI4Un1LUWKxufD+BiE6AEExYYgkQLQmLFqA1LFk=
+github.com/golang/protobuf v1.3.0/go.mod h1:Qd/q+1AKNOZr9uGQzbzCmRO6sUih6GTPZv6a1/R87v0=
+github.com/gorilla/websocket v1.4.0 h1:WDFjx/TMzVgy9VdMMQi2K2Emtwi2QcUQsztZ/zLaH/Q=
+github.com/gorilla/websocket v1.4.0/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/mattn/go-colorable v0.1.1 h1:G1f5SKeVxmagw/IyvzvtZE4Gybcc4Tr1tf7I8z0XgOg=
+github.com/mattn/go-colorable v0.1.1/go.mod h1:FuOcm+DKB9mbwrcAfNl7/TZVBZ6rcnceauSikq3lYCQ=
+github.com/mattn/go-isatty v0.0.5 h1:tHXDdz1cpzGaovsTB+TVB8q90WEokoVmfMqoVcrLUgw=
+github.com/mattn/go-isatty v0.0.5/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
+github.com/pkg/errors v0.8.1 h1:iURUrRGxPUNPdy5/HRSm+Yj6okJ6UtLINN0Q9M4+h3I=
+github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/skip2/go-qrcode v0.0.0-20190110000554-dc11ecdae0a9 h1:lpEzuenPuO1XNTeikEmvqYFcU37GVLl8SRNblzyvGBE=
+github.com/skip2/go-qrcode v0.0.0-20190110000554-dc11ecdae0a9/go.mod h1:PLPIyL7ikehBD1OAjmKKiOEhbvWyHGaNDjquXMcYABo=
+golang.org/x/crypto v0.0.0-20190131182504-b8fe1690c613/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2 h1:VklqNMn3ovrHsnt90PveolxSbWFaJdECFbxSq0Mqo2M=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/net v0.0.0-20180906233101-161cd47e91fd h1:nTDtHvHSdCn1m6ITfMRqtOd/9+7a3s8RBNOZ3eYZzJA=
+golang.org/x/net v0.0.0-20180906233101-161cd47e91fd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f h1:wMNYb4v58l5UBM7MYRLPG6ZhfOqbKu7X5eyFl8ZhKvA=
+golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+google.golang.org/genproto v0.0.0-20180831171423-11092d34479b/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=

vendor/github.com/Rhymen/go-whatsapp/group.go

@@ -8,7 +8,7 @@ import (
 
 func (wac *Conn) GetGroupMetaData(jid string) (<-chan string, error) {
 	data := []interface{}{"query", "GroupMetadata", jid}
-	return wac.write(data)
+	return wac.writeJson(data)
 }
 
 func (wac *Conn) CreateGroup(subject string, participants []string) (<-chan string, error) {
@@ -41,7 +41,7 @@ func (wac *Conn) LeaveGroup(jid string) (<-chan string, error) {
 
 func (wac *Conn) GroupInviteLink(jid string) (string, error) {
 	request := []interface{}{"query", "inviteCode", jid}
-	ch, err := wac.write(request)
+	ch, err := wac.writeJson(request)
 	if err != nil {
 		return "", err
 	}
@@ -63,3 +63,28 @@ func (wac *Conn) GroupInviteLink(jid string) (string, error) {
 
 	return response["code"].(string), nil
 }
+
+func (wac *Conn) GroupAcceptInviteCode(code string) (jid string, err error) {
+	request := []interface{}{"action", "invite", code}
+	ch, err := wac.writeJson(request)
+	if err != nil {
+		return "", err
+	}
+
+	var response map[string]interface{}
+
+	select {
+	case r := <-ch:
+		if err := json.Unmarshal([]byte(r), &response); err != nil {
+			return "", fmt.Errorf("error decoding response message: %v\n", err)
+		}
+	case <-time.After(wac.msgTimeout):
+		return "", fmt.Errorf("request timed out")
+	}
+
+	if int(response["status"].(float64)) != 200 {
+		return "", fmt.Errorf("request responded with %d", response["status"])
+	}
+
+	return response["gid"].(string), nil
+}

vendor/github.com/Rhymen/go-whatsapp/handler.go

@@ -2,9 +2,11 @@ package whatsapp
 
 import (
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/binary"
-	"github.com/matterbridge/go-whatsapp/binary/proto"
 	"os"
+	"strings"
+
+	"github.com/Rhymen/go-whatsapp/binary"
+	"github.com/Rhymen/go-whatsapp/binary/proto"
 )
 
 /*
@@ -78,6 +80,22 @@ type RawMessageHandler interface {
 	HandleRawMessage(message *proto.WebMessageInfo)
 }
 
+/**
+The ContactListHandler interface needs to be implemented to applky custom actions to contact lists dispatched by the dispatcher.
+*/
+type ContactListHandler interface {
+	Handler
+	HandleContactList(contacts []Contact)
+}
+
+/**
+The ChatListHandler interface needs to be implemented to apply custom actions to chat lists dispatched by the dispatcher.
+*/
+type ChatListHandler interface {
+	Handler
+	HandleChatList(contacts []Chat)
+}
+
 /*
 AddHandler adds an handler to the list of handler that receive dispatched messages.
 The provided handler must at least implement the Handler interface. Additionally implemented
@@ -88,6 +106,27 @@ func (wac *Conn) AddHandler(handler Handler) {
 	wac.handler = append(wac.handler, handler)
 }
 
+// RemoveHandler removes a handler from the list of handlers that receive dispatched messages.
+func (wac *Conn) RemoveHandler(handler Handler) bool {
+	i := -1
+	for k, v := range wac.handler {
+		if v == handler {
+			i = k
+			break
+		}
+	}
+	if i > -1 {
+		wac.handler = append(wac.handler[:i], wac.handler[i+1:]...)
+		return true
+	}
+	return false
+}
+
+// RemoveHandlers empties the list of handlers that receive dispatched messages.
+func (wac *Conn) RemoveHandlers() {
+	wac.handler = make([]Handler, 0)
+}
+
 func (wac *Conn) handle(message interface{}) {
 	switch m := message.(type) {
 	case error:
@@ -140,6 +179,62 @@ func (wac *Conn) handle(message interface{}) {
 
 }
 
+func (wac *Conn) handleContacts(contacts interface{}) {
+	var contactList []Contact
+	c, ok := contacts.([]interface{})
+	if !ok {
+		return
+	}
+	for _, contact := range c {
+		contactNode, ok := contact.(binary.Node)
+		if !ok {
+			continue
+		}
+
+		jid := strings.Replace(contactNode.Attributes["jid"], "@c.us", "@s.whatsapp.net", 1)
+		contactList = append(contactList, Contact{
+			jid,
+			contactNode.Attributes["notify"],
+			contactNode.Attributes["name"],
+			contactNode.Attributes["short"],
+		})
+	}
+	for _, h := range wac.handler {
+		if x, ok := h.(ContactListHandler); ok {
+			go x.HandleContactList(contactList)
+		}
+	}
+}
+
+func (wac *Conn) handleChats(chats interface{}) {
+	var chatList []Chat
+	c, ok := chats.([]interface{})
+	if !ok {
+		return
+	}
+	for _, chat := range c {
+		chatNode, ok := chat.(binary.Node)
+		if !ok {
+			continue
+		}
+
+		jid := strings.Replace(chatNode.Attributes["jid"], "@c.us", "@s.whatsapp.net", 1)
+		chatList = append(chatList, Chat{
+			jid,
+			chatNode.Attributes["name"],
+			chatNode.Attributes["count"],
+			chatNode.Attributes["t"],
+			chatNode.Attributes["mute"],
+			chatNode.Attributes["spam"],
+		})
+	}
+	for _, h := range wac.handler {
+		if x, ok := h.(ChatListHandler); ok {
+			go x.HandleChatList(chatList)
+		}
+	}
+}
+
 func (wac *Conn) dispatch(msg interface{}) {
 	if msg == nil {
 		return
@@ -158,6 +253,10 @@ func (wac *Conn) dispatch(msg interface{}) {
 			}
 		} else if message.Description == "response" && message.Attributes["type"] == "contacts" {
 			wac.updateContacts(message.Content)
+			wac.handleContacts(message.Content)
+		} else if message.Description == "response" && message.Attributes["type"] == "chat" {
+			wac.updateChats(message.Content)
+			wac.handleChats(message.Content)
 		}
 	case error:
 		wac.handle(message)

vendor/github.com/Rhymen/go-whatsapp/media.go

@@ -8,8 +8,8 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/crypto/cbc"
-	"github.com/matterbridge/go-whatsapp/crypto/hkdf"
+	"github.com/Rhymen/go-whatsapp/crypto/cbc"
+	"github.com/Rhymen/go-whatsapp/crypto/hkdf"
 	"io"
 	"io/ioutil"
 	"mime/multipart"
@@ -133,7 +133,7 @@ func (wac *Conn) Upload(reader io.Reader, appInfo MediaType) (url string, mediaK
 	}
 
 	uploadReq := []interface{}{"action", "encr_upload", filetype, base64.StdEncoding.EncodeToString(fileEncSha256)}
-	ch, err := wac.write(uploadReq)
+	ch, err := wac.writeJson(uploadReq)
 	if err != nil {
 		return "", nil, nil, nil, 0, err
 	}

vendor/github.com/Rhymen/go-whatsapp/message.go

@@ -4,8 +4,8 @@ import (
 	"encoding/hex"
 	"encoding/json"
 	"fmt"
-	"github.com/matterbridge/go-whatsapp/binary"
-	"github.com/matterbridge/go-whatsapp/binary/proto"
+	"github.com/Rhymen/go-whatsapp/binary"
+	"github.com/Rhymen/go-whatsapp/binary/proto"
 	"io"
 	"math/rand"
 	"strconv"
@@ -22,61 +22,77 @@ const (
 	MediaDocument MediaType = "WhatsApp Document Keys"
 )
 
-func (wac *Conn) Send(msg interface{}) error {
+var msgInfo MessageInfo
+
+func (wac *Conn) Send(msg interface{}) (string, error) {
 	var err error
 	var ch <-chan string
+	var msgProto *proto.WebMessageInfo
 
 	switch m := msg.(type) {
 	case *proto.WebMessageInfo:
 		ch, err = wac.sendProto(m)
 	case TextMessage:
-		ch, err = wac.sendProto(getTextProto(m))
+		msgProto = getTextProto(m)
+		msgInfo = getMessageInfo(msgProto)
+		ch, err = wac.sendProto(msgProto)
 	case ImageMessage:
 		m.url, m.mediaKey, m.fileEncSha256, m.fileSha256, m.fileLength, err = wac.Upload(m.Content, MediaImage)
 		if err != nil {
-			return fmt.Errorf("image upload failed: %v", err)
+			return "ERROR", fmt.Errorf("image upload failed: %v", err)
 		}
-		ch, err = wac.sendProto(getImageProto(m))
+		msgProto = getImageProto(m)
+		msgInfo = getMessageInfo(msgProto)
+		ch, err = wac.sendProto(msgProto)
 	case VideoMessage:
 		m.url, m.mediaKey, m.fileEncSha256, m.fileSha256, m.fileLength, err = wac.Upload(m.Content, MediaVideo)
 		if err != nil {
-			return fmt.Errorf("video upload failed: %v", err)
+			return "ERROR", fmt.Errorf("video upload failed: %v", err)
 		}
-		ch, err = wac.sendProto(getVideoProto(m))
+		msgProto = getVideoProto(m)
+		msgInfo = getMessageInfo(msgProto)
+		ch, err = wac.sendProto(msgProto)
 	case DocumentMessage:
 		m.url, m.mediaKey, m.fileEncSha256, m.fileSha256, m.fileLength, err = wac.Upload(m.Content, MediaDocument)
 		if err != nil {
-			return fmt.Errorf("document upload failed: %v", err)
+			return "ERROR", fmt.Errorf("document upload failed: %v", err)
 		}
-		ch, err = wac.sendProto(getDocumentProto(m))
+		msgProto = getDocumentProto(m)
+		msgInfo = getMessageInfo(msgProto)
+		ch, err = wac.sendProto(msgProto)
 	case AudioMessage:
 		m.url, m.mediaKey, m.fileEncSha256, m.fileSha256, m.fileLength, err = wac.Upload(m.Content, MediaAudio)
 		if err != nil {
-			return fmt.Errorf("audio upload failed: %v", err)
+			return "ERROR", fmt.Errorf("audio upload failed: %v", err)
 		}
-		ch, err = wac.sendProto(getAudioProto(m))
+		msgProto = getAudioProto(m)
+		msgInfo = getMessageInfo(msgProto)
+		ch, err = wac.sendProto(msgProto)
 	default:
-		return fmt.Errorf("cannot match type %T, use message types declared in the package", msg)
+		return "ERROR", fmt.Errorf("cannot match type %T, use message types declared in the package", msg)
 	}
 
 	if err != nil {
-		return fmt.Errorf("could not send proto: %v", err)
+		return "ERROR", fmt.Errorf("could not send proto: %v", err)
 	}
 
 	select {
 	case response := <-ch:
 		var resp map[string]interface{}
 		if err = json.Unmarshal([]byte(response), &resp); err != nil {
-			return fmt.Errorf("error decoding sending response: %v\n", err)
+			return "ERROR", fmt.Errorf("error decoding sending response: %v\n", err)
 		}
 		if int(resp["status"].(float64)) != 200 {
-			return fmt.Errorf("message sending responded with %d", resp["status"])
+			return "ERROR", fmt.Errorf("message sending responded with %d", resp["status"])
+		}
+		if int(resp["status"].(float64)) == 200 {
+			return msgInfo.Id, nil
 		}
 	case <-time.After(wac.msgTimeout):
-		return fmt.Errorf("sending message timed out")
+		return "ERROR", fmt.Errorf("sending message timed out")
 	}
 
-	return nil
+	return "ERROR", nil
 }
 
 func (wac *Conn) sendProto(p *proto.WebMessageInfo) (<-chan string, error) {

vendor/github.com/Rhymen/go-whatsapp/read.go

@@ -0,0 +1,111 @@
+package whatsapp
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"github.com/Rhymen/go-whatsapp/binary"
+	"github.com/Rhymen/go-whatsapp/crypto/cbc"
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+	"io"
+	"io/ioutil"
+	"strings"
+)
+
+func (wac *Conn) readPump() {
+	defer wac.wg.Done()
+
+	var readErr error
+	var msgType int
+	var reader io.Reader
+
+	for {
+		readerFound := make(chan struct{})
+		go func() {
+			msgType, reader, readErr = wac.ws.conn.NextReader()
+			close(readerFound)
+		}()
+		select {
+		case <-readerFound:
+			if readErr != nil {
+				wac.handle(&ErrConnectionFailed{Err: readErr})
+				_, _ = wac.Disconnect()
+				return
+			}
+			msg, err := ioutil.ReadAll(reader)
+			if err != nil {
+				wac.handle(errors.Wrap(err, "error reading message from Reader"))
+				continue
+			}
+			err = wac.processReadData(msgType, msg)
+			if err != nil {
+				wac.handle(errors.Wrap(err, "error processing data"))
+			}
+		case <-wac.ws.close:
+			return
+		}
+	}
+}
+
+func (wac *Conn) processReadData(msgType int, msg []byte) error {
+	data := strings.SplitN(string(msg), ",", 2)
+
+	if data[0][0] == '!' { //Keep-Alive Timestamp
+		data = append(data, data[0][1:]) //data[1]
+		data[0] = "!"
+	}
+
+	if len(data) != 2 || len(data[1]) == 0 {
+		return ErrInvalidWsData
+	}
+
+	wac.listener.RLock()
+	listener, hasListener := wac.listener.m[data[0]]
+	wac.listener.RUnlock()
+
+	if hasListener {
+		// listener only exists for TextMessages query messages out of contact.go
+		// If these binary query messages can be handled another way,
+		// then the TextMessages, which are all JSON encoded, can directly
+		// be unmarshalled. The listener chan could then be changed from type
+		// chan string to something like chan map[string]interface{}. The unmarshalling
+		// in several places, especially in session.go, would then be gone.
+		listener <- data[1]
+
+		wac.listener.Lock()
+		delete(wac.listener.m, data[0])
+		wac.listener.Unlock()
+	} else if msgType == websocket.BinaryMessage && wac.loggedIn {
+		message, err := wac.decryptBinaryMessage([]byte(data[1]))
+		if err != nil {
+			return errors.Wrap(err, "error decoding binary")
+		}
+		wac.dispatch(message)
+	} else { //RAW json status updates
+		wac.handle(string(data[1]))
+	}
+	return nil
+}
+
+func (wac *Conn) decryptBinaryMessage(msg []byte) (*binary.Node, error) {
+	//message validation
+	h2 := hmac.New(sha256.New, wac.session.MacKey)
+	h2.Write([]byte(msg[32:]))
+	if !hmac.Equal(h2.Sum(nil), msg[:32]) {
+		return nil, ErrInvalidHmac
+	}
+
+	// message decrypt
+	d, err := cbc.Decrypt(wac.session.EncKey, nil, msg[32:])
+	if err != nil {
+		return nil, errors.Wrap(err, "decrypting message with AES-CBC failed")
+	}
+
+	// message unmarshal
+	message, err := binary.Unmarshal(d)
+	if err != nil {
+		return nil, errors.Wrap(err, "could not decode binary")
+	}
+
+	return message, nil
+}

vendor/github.com/Rhymen/go-whatsapp/session.go

@@ -7,16 +7,20 @@ import (
 	"encoding/base64"
 	"encoding/json"
 	"fmt"
+	"sync/atomic"
 	"time"
 
-	"github.com/matterbridge/go-whatsapp/crypto/cbc"
-	"github.com/matterbridge/go-whatsapp/crypto/curve25519"
-	"github.com/matterbridge/go-whatsapp/crypto/hkdf"
+	"github.com/Rhymen/go-whatsapp/crypto/cbc"
+	"github.com/Rhymen/go-whatsapp/crypto/curve25519"
+	"github.com/Rhymen/go-whatsapp/crypto/hkdf"
 )
 
+//represents the WhatsAppWeb client version
+var waVersion = []int{0, 3, 3324}
+
 /*
 Session contains session individual information. To be able to resume the connection without scanning the qr code
-every time you should save the Session returned by Login and use RestoreSession the next time you want to login.
+every time you should save the Session returned by Login and use RestoreWithSession the next time you want to login.
 Every successful created connection returns a new Session. The Session(ClientToken, ServerToken) is altered after
 every re-login and should be saved every time.
 */
@@ -98,7 +102,7 @@ func (wac *Conn) SetClientName(long, short string) error {
 
 /*
 Login is the function that creates a new whatsapp session and logs you in. If you do not want to scan the qr code
-every time, you should save the returned session and use RestoreSession the next time. Login takes a writable channel
+every time, you should save the returned session and use RestoreWithSession the next time. Login takes a writable channel
 as an parameter. This channel is used to push the data represented by the qr code back to the user. The received data
 should be displayed as an qr code in a way you prefer. To print a qr code to console you can use:
 github.com/Baozisoftware/qrcode-terminal-go Example login procedure:
@@ -121,7 +125,21 @@ github.com/Baozisoftware/qrcode-terminal-go Example login procedure:
 */
 func (wac *Conn) Login(qrChan chan<- string) (Session, error) {
 	session := Session{}
+	//Makes sure that only a single Login or Restore can happen at the same time
+	if !atomic.CompareAndSwapUint32(&wac.sessionLock, 0, 1) {
+		return session, ErrLoginInProgress
+	}
+	defer atomic.StoreUint32(&wac.sessionLock, 0)
 
+	if wac.loggedIn {
+		return session, ErrAlreadyLoggedIn
+	}
+
+	if err := wac.connect(); err != nil && err != ErrAlreadyConnected {
+		return session, err
+	}
+
+	//logged in?!?
 	if wac.session != nil && (wac.session.EncKey != nil || wac.session.MacKey != nil) {
 		return session, fmt.Errorf("already logged in")
 	}
@@ -133,9 +151,8 @@ func (wac *Conn) Login(qrChan chan<- string) (Session, error) {
 	}
 
 	session.ClientId = base64.StdEncoding.EncodeToString(clientId)
-	//oldVersion=8691
-	login := []interface{}{"admin", "init", []int{0, 3, 225}, []string{wac.longClientName, wac.shortClientName}, session.ClientId, true}
-	loginChan, err := wac.write(login)
+	login := []interface{}{"admin", "init", waVersion, []string{wac.longClientName, wac.shortClientName}, session.ClientId, true}
+	loginChan, err := wac.writeJson(login)
 	if err != nil {
 		return session, fmt.Errorf("error writing login: %v\n", err)
 	}
@@ -160,14 +177,16 @@ func (wac *Conn) Login(qrChan chan<- string) (Session, error) {
 	}
 
 	//listener for Login response
-	messageTag := "s1"
-	wac.listener[messageTag] = make(chan string, 1)
+	s1 := make(chan string, 1)
+	wac.listener.Lock()
+	wac.listener.m["s1"] = s1
+	wac.listener.Unlock()
 
 	qrChan <- fmt.Sprintf("%v,%v,%v", ref, base64.StdEncoding.EncodeToString(pub[:]), session.ClientId)
 
 	var resp2 []interface{}
 	select {
-	case r1 := <-wac.listener[messageTag]:
+	case r1 := <-s1:
 		if err := json.Unmarshal([]byte(r1), &resp2); err != nil {
 			return session, fmt.Errorf("error decoding qr code resp: %v", err)
 		}
@@ -226,90 +245,136 @@ func (wac *Conn) Login(qrChan chan<- string) (Session, error) {
 	session.EncKey = keyDecrypted[:32]
 	session.MacKey = keyDecrypted[32:64]
 	wac.session = &session
+	wac.loggedIn = true
 
 	return session, nil
 }
 
+//TODO: GoDoc
 /*
-RestoreSession is the function that restores a given session. It will try to reestablish the connection to the
+Basically the old RestoreSession functionality
+*/
+func (wac *Conn) RestoreWithSession(session Session) (_ Session, err error) {
+	if wac.loggedIn {
+		return Session{}, ErrAlreadyLoggedIn
+	}
+	old := wac.session
+	defer func() {
+		if err != nil {
+			wac.session = old
+		}
+	}()
+	wac.session = &session
+
+	if err = wac.Restore(); err != nil {
+		wac.session = nil
+		return Session{}, err
+	}
+	return *wac.session, nil
+}
+
+/*//TODO: GoDoc
+RestoreWithSession is the function that restores a given session. It will try to reestablish the connection to the
 WhatsAppWeb servers with the provided session. If it succeeds it will return a new session. This new session has to be
 saved because the Client and Server-Token will change after every login. Logging in with old tokens is possible, but not
 suggested. If so, a challenge has to be resolved which is just another possible point of failure.
 */
-func (wac *Conn) RestoreSession(session Session) (Session, error) {
-	if wac.session != nil && (wac.session.EncKey != nil || wac.session.MacKey != nil) {
-		return Session{}, fmt.Errorf("already logged in")
+func (wac *Conn) Restore() error {
+	//Makes sure that only a single Login or Restore can happen at the same time
+	if !atomic.CompareAndSwapUint32(&wac.sessionLock, 0, 1) {
+		return ErrLoginInProgress
+	}
+	defer atomic.StoreUint32(&wac.sessionLock, 0)
+
+	if wac.session == nil {
+		return ErrInvalidSession
 	}
 
-	wac.session = &session
+	if err := wac.connect(); err != nil && err != ErrAlreadyConnected {
+		return err
+	}
+
+	if wac.loggedIn {
+		return ErrAlreadyLoggedIn
+	}
 
 	//listener for Conn or challenge; s1 is not allowed to drop
-	wac.listener["s1"] = make(chan string, 1)
+	s1 := make(chan string, 1)
+	wac.listener.Lock()
+	wac.listener.m["s1"] = s1
+	wac.listener.Unlock()
 
 	//admin init
-	init := []interface{}{"admin", "init", []int{0, 3, 225}, []string{wac.longClientName, wac.shortClientName}, session.ClientId, true}
-	initChan, err := wac.write(init)
+	init := []interface{}{"admin", "init", waVersion, []string{wac.longClientName, wac.shortClientName}, wac.session.ClientId, true}
+	initChan, err := wac.writeJson(init)
 	if err != nil {
-		wac.session = nil
-		return Session{}, fmt.Errorf("error writing admin init: %v\n", err)
+		return fmt.Errorf("error writing admin init: %v\n", err)
 	}
 
 	//admin login with takeover
-	login := []interface{}{"admin", "login", session.ClientToken, session.ServerToken, session.ClientId, "takeover"}
-	loginChan, err := wac.write(login)
+	login := []interface{}{"admin", "login", wac.session.ClientToken, wac.session.ServerToken, wac.session.ClientId, "takeover"}
+	loginChan, err := wac.writeJson(login)
 	if err != nil {
-		wac.session = nil
-		return Session{}, fmt.Errorf("error writing admin login: %v\n", err)
+		return fmt.Errorf("error writing admin login: %v\n", err)
 	}
 
 	select {
 	case r := <-initChan:
 		var resp map[string]interface{}
 		if err = json.Unmarshal([]byte(r), &resp); err != nil {
-			wac.session = nil
-			return Session{}, fmt.Errorf("error decoding login connResp: %v\n", err)
+			return fmt.Errorf("error decoding login connResp: %v\n", err)
 		}
 
 		if int(resp["status"].(float64)) != 200 {
-			wac.session = nil
-			return Session{}, fmt.Errorf("init responded with %d", resp["status"])
+			return fmt.Errorf("init responded with %d", resp["status"])
 		}
 	case <-time.After(wac.msgTimeout):
-		wac.session = nil
-		return Session{}, fmt.Errorf("restore session init timed out")
+		return fmt.Errorf("restore session init timed out")
 	}
 
 	//wait for s1
 	var connResp []interface{}
 	select {
-	case r1 := <-wac.listener["s1"]:
+	case r1 := <-s1:
 		if err := json.Unmarshal([]byte(r1), &connResp); err != nil {
-			wac.session = nil
-			return Session{}, fmt.Errorf("error decoding s1 message: %v\n", err)
+			return fmt.Errorf("error decoding s1 message: %v\n", err)
 		}
 	case <-time.After(wac.msgTimeout):
-		wac.session = nil
-		return Session{}, fmt.Errorf("restore session connection timed out")
+
+		//check for an error message
+		select {
+		case r := <-loginChan:
+			var resp map[string]interface{}
+			if err = json.Unmarshal([]byte(r), &resp); err != nil {
+				return fmt.Errorf("error decoding login connResp: %v\n", err)
+			}
+			if int(resp["status"].(float64)) != 200 {
+				return fmt.Errorf("admin login responded with %d", int(resp["status"].(float64)))
+			}
+		default:
+			// not even an error message – assume timeout
+			return fmt.Errorf("restore session connection timed out")
+		}
 	}
 
 	//check if challenge is present
 	if len(connResp) == 2 && connResp[0] == "Cmd" && connResp[1].(map[string]interface{})["type"] == "challenge" {
-		wac.listener["s2"] = make(chan string, 1)
+		s2 := make(chan string, 1)
+		wac.listener.Lock()
+		wac.listener.m["s2"] = s2
+		wac.listener.Unlock()
 
 		if err := wac.resolveChallenge(connResp[1].(map[string]interface{})["challenge"].(string)); err != nil {
-			wac.session = nil
-			return Session{}, fmt.Errorf("error resolving challenge: %v\n", err)
+			return fmt.Errorf("error resolving challenge: %v\n", err)
 		}
 
 		select {
-		case r := <-wac.listener["s2"]:
+		case r := <-s2:
 			if err := json.Unmarshal([]byte(r), &connResp); err != nil {
-				wac.session = nil
-				return Session{}, fmt.Errorf("error decoding s2 message: %v\n", err)
+				return fmt.Errorf("error decoding s2 message: %v\n", err)
 			}
 		case <-time.After(wac.msgTimeout):
-			wac.session = nil
-			return Session{}, fmt.Errorf("restore session challenge timed out")
+			return fmt.Errorf("restore session challenge timed out")
 		}
 	}
 
@@ -318,17 +383,14 @@ func (wac *Conn) RestoreSession(session Session) (Session, error) {
 	case r := <-loginChan:
 		var resp map[string]interface{}
 		if err = json.Unmarshal([]byte(r), &resp); err != nil {
-			wac.session = nil
-			return Session{}, fmt.Errorf("error decoding login connResp: %v\n", err)
+			return fmt.Errorf("error decoding login connResp: %v\n", err)
 		}
 
 		if int(resp["status"].(float64)) != 200 {
-			wac.session = nil
-			return Session{}, fmt.Errorf("admin login responded with %d", resp["status"])
+			return fmt.Errorf("admin login responded with %d", resp["status"])
 		}
 	case <-time.After(wac.msgTimeout):
-		wac.session = nil
-		return Session{}, fmt.Errorf("restore session login timed out")
+		return fmt.Errorf("restore session login timed out")
 	}
 
 	info := connResp[1].(map[string]interface{})
@@ -336,11 +398,12 @@ func (wac *Conn) RestoreSession(session Session) (Session, error) {
 	wac.Info = newInfoFromReq(info)
 
 	//set new tokens
-	session.ClientToken = info["clientToken"].(string)
-	session.ServerToken = info["serverToken"].(string)
-	session.Wid = info["wid"].(string)
+	wac.session.ClientToken = info["clientToken"].(string)
+	wac.session.ServerToken = info["serverToken"].(string)
+	wac.session.Wid = info["wid"].(string)
+	wac.loggedIn = true
 
-	return *wac.session, nil
+	return nil
 }
 
 func (wac *Conn) resolveChallenge(challenge string) error {
@@ -353,7 +416,7 @@ func (wac *Conn) resolveChallenge(challenge string) error {
 	h2.Write([]byte(decoded))
 
 	ch := []interface{}{"admin", "challenge", base64.StdEncoding.EncodeToString(h2.Sum(nil)), wac.session.ServerToken, wac.session.ClientId}
-	challengeChan, err := wac.write(ch)
+	challengeChan, err := wac.writeJson(ch)
 	if err != nil {
 		return fmt.Errorf("error writing challenge: %v\n", err)
 	}
@@ -380,7 +443,7 @@ The session can not be resumed and will disappear on your phone in the WhatsAppW
 */
 func (wac *Conn) Logout() error {
 	login := []interface{}{"admin", "Conn", "disconnect"}
-	_, err := wac.write(login)
+	_, err := wac.writeJson(login)
 	if err != nil {
 		return fmt.Errorf("error writing logout: %v\n", err)
 	}

vendor/github.com/Rhymen/go-whatsapp/store.go

@@ -0,0 +1,80 @@
+package whatsapp
+
+import (
+	"github.com/Rhymen/go-whatsapp/binary"
+	"strings"
+)
+
+type Store struct {
+	Contacts map[string]Contact
+	Chats    map[string]Chat
+}
+
+type Contact struct {
+	Jid    string
+	Notify string
+	Name   string
+	Short  string
+}
+
+type Chat struct {
+	Jid             string
+	Name            string
+	Unread          string
+	LastMessageTime string
+	IsMuted         string
+	IsMarkedSpam    string
+}
+
+func newStore() *Store {
+	return &Store{
+		make(map[string]Contact),
+		make(map[string]Chat),
+	}
+}
+
+func (wac *Conn) updateContacts(contacts interface{}) {
+	c, ok := contacts.([]interface{})
+	if !ok {
+		return
+	}
+
+	for _, contact := range c {
+		contactNode, ok := contact.(binary.Node)
+		if !ok {
+			continue
+		}
+
+		jid := strings.Replace(contactNode.Attributes["jid"], "@c.us", "@s.whatsapp.net", 1)
+		wac.Store.Contacts[jid] = Contact{
+			jid,
+			contactNode.Attributes["notify"],
+			contactNode.Attributes["name"],
+			contactNode.Attributes["short"],
+		}
+	}
+}
+
+func (wac *Conn) updateChats(chats interface{}) {
+	c, ok := chats.([]interface{})
+	if !ok {
+		return
+	}
+
+	for _, chat := range c {
+		chatNode, ok := chat.(binary.Node)
+		if !ok {
+			continue
+		}
+
+		jid := strings.Replace(chatNode.Attributes["jid"], "@c.us", "@s.whatsapp.net", 1)
+		wac.Store.Chats[jid] = Chat{
+			jid,
+			chatNode.Attributes["name"],
+			chatNode.Attributes["count"],
+			chatNode.Attributes["t"],
+			chatNode.Attributes["mute"],
+			chatNode.Attributes["spam"],
+		}
+	}
+}

vendor/github.com/Rhymen/go-whatsapp/write.go

@@ -0,0 +1,125 @@
+package whatsapp
+
+import (
+	"crypto/hmac"
+	"crypto/sha256"
+	"encoding/json"
+	"fmt"
+	"github.com/Rhymen/go-whatsapp/binary"
+	"github.com/Rhymen/go-whatsapp/crypto/cbc"
+	"github.com/gorilla/websocket"
+	"github.com/pkg/errors"
+	"strconv"
+	"time"
+)
+
+//writeJson enqueues a json message into the writeChan
+func (wac *Conn) writeJson(data []interface{}) (<-chan string, error) {
+	d, err := json.Marshal(data)
+	if err != nil {
+		return nil, err
+	}
+
+	ts := time.Now().Unix()
+	messageTag := fmt.Sprintf("%d.--%d", ts, wac.msgCount)
+	bytes := []byte(fmt.Sprintf("%s,%s", messageTag, d))
+
+	ch, err := wac.write(websocket.TextMessage, messageTag, bytes)
+	if err != nil {
+		return nil, err
+	}
+
+	wac.msgCount++
+	return ch, nil
+}
+
+func (wac *Conn) writeBinary(node binary.Node, metric metric, flag flag, messageTag string) (<-chan string, error) {
+	if len(messageTag) < 2 {
+		return nil, ErrMissingMessageTag
+	}
+
+	data, err := wac.encryptBinaryMessage(node)
+	if err != nil {
+		return nil, errors.Wrap(err, "encryptBinaryMessage(node) failed")
+	}
+
+	bytes := []byte(messageTag + ",")
+	bytes = append(bytes, byte(metric), byte(flag))
+	bytes = append(bytes, data...)
+
+	ch, err := wac.write(websocket.BinaryMessage, messageTag, bytes)
+	if err != nil {
+		return nil, errors.Wrap(err, "failed to write message")
+	}
+
+	wac.msgCount++
+	return ch, nil
+}
+
+func (wac *Conn) sendKeepAlive() error {
+	bytes := []byte("?,,")
+	respChan, err := wac.write(websocket.TextMessage, "!", bytes)
+	if err != nil {
+		return errors.Wrap(err, "error sending keepAlive")
+	}
+
+	select {
+	case resp := <-respChan:
+		msecs, err := strconv.ParseInt(resp, 10, 64)
+		if err != nil {
+			return errors.Wrap(err, "Error converting time string to uint")
+		}
+		wac.ServerLastSeen = time.Unix(msecs/1000, (msecs%1000)*int64(time.Millisecond))
+
+	case <-time.After(wac.msgTimeout):
+		return ErrConnectionTimeout
+	}
+
+	return nil
+}
+
+func (wac *Conn) write(messageType int, answerMessageTag string, data []byte) (<-chan string, error) {
+	var ch chan string
+	if answerMessageTag != "" {
+		ch = make(chan string, 1)
+
+		wac.listener.Lock()
+		wac.listener.m[answerMessageTag] = ch
+		wac.listener.Unlock()
+	}
+
+	wac.ws.Lock()
+	err := wac.ws.conn.WriteMessage(messageType, data)
+	wac.ws.Unlock()
+
+	if err != nil {
+		if answerMessageTag != "" {
+			wac.listener.Lock()
+			delete(wac.listener.m, answerMessageTag)
+			wac.listener.Unlock()
+		}
+		return nil, errors.Wrap(err, "error writing to websocket")
+	}
+	return ch, nil
+}
+
+func (wac *Conn) encryptBinaryMessage(node binary.Node) (data []byte, err error) {
+	b, err := binary.Marshal(node)
+	if err != nil {
+		return nil, errors.Wrap(err, "binary node marshal failed")
+	}
+
+	cipher, err := cbc.Encrypt(wac.session.EncKey, nil, b)
+	if err != nil {
+		return nil, errors.Wrap(err, "encrypt failed")
+	}
+
+	h := hmac.New(sha256.New, wac.session.MacKey)
+	h.Write(cipher)
+	hash := h.Sum(nil)
+
+	data = append(data, hash[:32]...)
+	data = append(data, cipher...)
+
+	return data, nil
+}

vendor/github.com/d5/tengo/README.md

@@ -7,6 +7,7 @@
 [![GoDoc](https://godoc.org/github.com/d5/tengo?status.svg)](https://godoc.org/github.com/d5/tengo/script)
 [![Go Report Card](https://goreportcard.com/badge/github.com/d5/tengo)](https://goreportcard.com/report/github.com/d5/tengo)
 [![Build Status](https://travis-ci.org/d5/tengo.svg?branch=master)](https://travis-ci.org/d5/tengo)
+[![Sourcegraph](https://sourcegraph.com/github.com/d5/tengo/-/badge.svg)](https://sourcegraph.com/github.com/d5/tengo?badge)
 
 **Tengo is a small, dynamic, fast, secure script language for Go.** 
 

vendor/github.com/d5/tengo/compiler/ast/ident_list.go

@@ -8,9 +8,10 @@ import (
 
 // IdentList represents a list of identifiers.
 type IdentList struct {
-	LParen source.Pos
-	List   []*Ident
-	RParen source.Pos
+	LParen  source.Pos
+	VarArgs bool
+	List    []*Ident
+	RParen  source.Pos
 }
 
 // Pos returns the position of first character belonging to the node.
@@ -50,8 +51,12 @@ func (n *IdentList) NumFields() int {
 
 func (n *IdentList) String() string {
 	var list []string
-	for _, e := range n.List {
-		list = append(list, e.String())
+	for i, e := range n.List {
+		if n.VarArgs && i == len(n.List)-1 {
+			list = append(list, "..."+e.String())
+		} else {
+			list = append(list, e.String())
+		}
 	}
 
 	return "(" + strings.Join(list, ", ") + ")"

vendor/github.com/d5/tengo/compiler/compiler.go

@@ -477,6 +477,7 @@ func (c *Compiler) Compile(node ast.Node) error {
 			Instructions:  instructions,
 			NumLocals:     numLocals,
 			NumParameters: len(node.Type.Params.List),
+			VarArgs:       node.Type.Params.VarArgs,
 			SourceMap:     sourceMap,
 		}
 

vendor/github.com/d5/tengo/compiler/instructions.go

@@ -13,7 +13,7 @@ func MakeInstruction(opcode Opcode, operands ...int) []byte {
 		totalLen += w
 	}
 
-	instruction := make([]byte, totalLen, totalLen)
+	instruction := make([]byte, totalLen)
 	instruction[0] = byte(opcode)
 
 	offset := 1

vendor/github.com/d5/tengo/compiler/parser/parser.go

@@ -610,19 +610,31 @@ func (p *Parser) parseIdentList() *ast.IdentList {
 
 	var params []*ast.Ident
 	lparen := p.expect(token.LParen)
+	isVarArgs := false
 	if p.token != token.RParen {
-		params = append(params, p.parseIdent())
-		for p.token == token.Comma {
+		if p.token == token.Ellipsis {
+			isVarArgs = true
 			p.next()
+		}
+
+		params = append(params, p.parseIdent())
+		for !isVarArgs && p.token == token.Comma {
+			p.next()
+			if p.token == token.Ellipsis {
+				isVarArgs = true
+				p.next()
+			}
 			params = append(params, p.parseIdent())
 		}
 	}
+
 	rparen := p.expect(token.RParen)
 
 	return &ast.IdentList{
-		LParen: lparen,
-		RParen: rparen,
-		List:   params,
+		LParen:  lparen,
+		RParen:  rparen,
+		VarArgs: isVarArgs,
+		List:    params,
 	}
 }
 

vendor/github.com/d5/tengo/compiler/symbol_scopes.go

@@ -6,7 +6,7 @@ type SymbolScope string
 // List of symbol scopes
 const (
 	ScopeGlobal  SymbolScope = "GLOBAL"
-	ScopeLocal               = "LOCAL"
-	ScopeBuiltin             = "BUILTIN"
-	ScopeFree                = "FREE"
+	ScopeLocal   SymbolScope = "LOCAL"
+	ScopeBuiltin SymbolScope = "BUILTIN"
+	ScopeFree    SymbolScope = "FREE"
 )

vendor/github.com/d5/tengo/objects/builtin_format.go

@@ -0,0 +1,27 @@
+package objects
+
+func builtinFormat(args ...Object) (Object, error) {
+	numArgs := len(args)
+	if numArgs == 0 {
+		return nil, ErrWrongNumArguments
+	}
+
+	format, ok := args[0].(*String)
+	if !ok {
+		return nil, ErrInvalidArgumentType{
+			Name:     "format",
+			Expected: "string",
+			Found:    args[0].TypeName(),
+		}
+	}
+	if numArgs == 1 {
+		return format, nil // okay to return 'format' directly as String is immutable
+	}
+
+	s, err := Format(format.Value, args[1:]...)
+	if err != nil {
+		return nil, err
+	}
+
+	return &String{Value: s}, nil
+}

vendor/github.com/d5/tengo/objects/builtins.go

@@ -111,4 +111,8 @@ var Builtins = []*BuiltinFunction{
 		Name:  "type_name",
 		Value: builtinTypeName,
 	},
+	{
+		Name:  "format",
+		Value: builtinFormat,
+	},
 }

vendor/github.com/d5/tengo/objects/bytes.go

@@ -57,7 +57,7 @@ func (o *Bytes) Equals(x Object) bool {
 		return false
 	}
 
-	return bytes.Compare(o.Value, t.Value) == 0
+	return bytes.Equal(o.Value, t.Value)
 }
 
 // IndexGet returns an element (as Int) at a given index.

vendor/github.com/d5/tengo/objects/compiled_function.go

@@ -10,6 +10,7 @@ type CompiledFunction struct {
 	Instructions  []byte
 	NumLocals     int // number of local variables (including function parameters)
 	NumParameters int
+	VarArgs       bool
 	SourceMap     map[int]source.Pos
 }
 
@@ -34,6 +35,7 @@ func (o *CompiledFunction) Copy() Object {
 		Instructions:  append([]byte{}, o.Instructions...),
 		NumLocals:     o.NumLocals,
 		NumParameters: o.NumParameters,
+		VarArgs:       o.VarArgs,
 	}
 }
 

vendor/github.com/d5/tengo/objects/conversion.go

@@ -254,7 +254,7 @@ func FromInterface(v interface{}) (Object, error) {
 	case []Object:
 		return &Array{Value: v}, nil
 	case []interface{}:
-		arr := make([]Object, len(v), len(v))
+		arr := make([]Object, len(v))
 		for i, e := range v {
 			vo, err := FromInterface(e)
 			if err != nil {

vendor/github.com/d5/tengo/objects/map.go

@@ -76,13 +76,13 @@ func (o *Map) Equals(x Object) bool {
 
 // IndexGet returns the value for the given key.
 func (o *Map) IndexGet(index Object) (res Object, err error) {
-	strIdx, ok := index.(*String)
+	strIdx, ok := ToString(index)
 	if !ok {
 		err = ErrInvalidIndexType
 		return
 	}
 
-	val, ok := o.Value[strIdx.Value]
+	val, ok := o.Value[strIdx]
 	if !ok {
 		val = UndefinedValue
 	}

vendor/github.com/d5/tengo/objects/undefined.go

@@ -40,3 +40,23 @@ func (o *Undefined) Equals(x Object) bool {
 func (o *Undefined) IndexGet(index Object) (Object, error) {
 	return UndefinedValue, nil
 }
+
+// Iterate creates a map iterator.
+func (o *Undefined) Iterate() Iterator {
+	return o
+}
+
+// Next returns true if there are more elements to iterate.
+func (o *Undefined) Next() bool {
+	return false
+}
+
+// Key returns the key or index value of the current element.
+func (o *Undefined) Key() Object {
+	return o
+}
+
+// Value returns the value of the current element.
+func (o *Undefined) Value() Object {
+	return o
+}

vendor/github.com/d5/tengo/runtime/vm.go

@@ -642,9 +642,31 @@ func (v *VM) run() {
 
 			switch callee := value.(type) {
 			case *objects.Closure:
+				if callee.Fn.VarArgs {
+					// if the closure is variadic,
+					// roll up all variadic parameters into an array
+					realArgs := callee.Fn.NumParameters - 1
+					varArgs := numArgs - realArgs
+					if varArgs >= 0 {
+						numArgs = realArgs + 1
+						args := make([]objects.Object, varArgs)
+						spStart := v.sp - varArgs
+						for i := spStart; i < v.sp; i++ {
+							args[i-spStart] = v.stack[i]
+						}
+						v.stack[spStart] = &objects.Array{Value: args}
+						v.sp = spStart + 1
+					}
+				}
+
 				if numArgs != callee.Fn.NumParameters {
-					v.err = fmt.Errorf("wrong number of arguments: want=%d, got=%d",
-						callee.Fn.NumParameters, numArgs)
+					if callee.Fn.VarArgs {
+						v.err = fmt.Errorf("wrong number of arguments: want>=%d, got=%d",
+							callee.Fn.NumParameters-1, numArgs)
+					} else {
+						v.err = fmt.Errorf("wrong number of arguments: want=%d, got=%d",
+							callee.Fn.NumParameters, numArgs)
+					}
 					return
 				}
 
@@ -674,9 +696,31 @@ func (v *VM) run() {
 				v.sp = v.sp - numArgs + callee.Fn.NumLocals
 
 			case *objects.CompiledFunction:
+				if callee.VarArgs {
+					// if the closure is variadic,
+					// roll up all variadic parameters into an array
+					realArgs := callee.NumParameters - 1
+					varArgs := numArgs - realArgs
+					if varArgs >= 0 {
+						numArgs = realArgs + 1
+						args := make([]objects.Object, varArgs)
+						spStart := v.sp - varArgs
+						for i := spStart; i < v.sp; i++ {
+							args[i-spStart] = v.stack[i]
+						}
+						v.stack[spStart] = &objects.Array{Value: args}
+						v.sp = spStart + 1
+					}
+				}
+
 				if numArgs != callee.NumParameters {
-					v.err = fmt.Errorf("wrong number of arguments: want=%d, got=%d",
-						callee.NumParameters, numArgs)
+					if callee.VarArgs {
+						v.err = fmt.Errorf("wrong number of arguments: want>=%d, got=%d",
+							callee.NumParameters-1, numArgs)
+					} else {
+						v.err = fmt.Errorf("wrong number of arguments: want=%d, got=%d",
+							callee.NumParameters, numArgs)
+					}
 					return
 				}
 
@@ -707,9 +751,7 @@ func (v *VM) run() {
 
 			case objects.Callable:
 				var args []objects.Object
-				for _, arg := range v.stack[v.sp-numArgs : v.sp] {
-					args = append(args, arg)
-				}
+				args = append(args, v.stack[v.sp-numArgs:v.sp]...)
 
 				ret, e := callee.Call(args...)
 				v.sp -= numArgs + 1
@@ -817,9 +859,12 @@ func (v *VM) run() {
 			val := v.stack[v.sp-numSelectors-1]
 			v.sp -= numSelectors + 1
 
-			sp := v.curFrame.basePointer + localIndex
+			dst := v.stack[v.curFrame.basePointer+localIndex]
+			if obj, ok := dst.(*objects.ObjectPtr); ok {
+				dst = *obj.Value
+			}
 
-			if e := indexAssign(v.stack[sp], val, selectors); e != nil {
+			if e := indexAssign(dst, val, selectors); e != nil {
 				v.err = e
 				return
 			}

vendor/github.com/d5/tengo/script/script.go

@@ -183,12 +183,3 @@ func (s *Script) prepCompile() (symbolTable *compiler.SymbolTable, globals []obj
 
 	return
 }
-
-func (s *Script) copyVariables() map[string]*Variable {
-	vars := make(map[string]*Variable)
-	for n, v := range s.variables {
-		vars[n] = v
-	}
-
-	return vars
-}

vendor/github.com/d5/tengo/stdlib/fmt.go

@@ -44,12 +44,12 @@ func fmtPrintf(args ...objects.Object) (ret objects.Object, err error) {
 		return nil, nil
 	}
 
-	formatArgs := make([]interface{}, numArgs-1, numArgs-1)
-	for idx, arg := range args[1:] {
-		formatArgs[idx] = objects.ToInterface(arg)
+	s, err := objects.Format(format.Value, args[1:]...)
+	if err != nil {
+		return nil, err
 	}
 
-	fmt.Printf(format.Value, formatArgs...)
+	fmt.Print(s)
 
 	return nil, nil
 }
@@ -84,15 +84,9 @@ func fmtSprintf(args ...objects.Object) (ret objects.Object, err error) {
 		return format, nil // okay to return 'format' directly as String is immutable
 	}
 
-	formatArgs := make([]interface{}, numArgs-1, numArgs-1)
-	for idx, arg := range args[1:] {
-		formatArgs[idx] = objects.ToInterface(arg)
-	}
-
-	s := fmt.Sprintf(format.Value, formatArgs...)
-
-	if len(s) > tengo.MaxStringLen {
-		return nil, objects.ErrStringLimit
+	s, err := objects.Format(format.Value, args[1:]...)
+	if err != nil {
+		return nil, err
 	}
 
 	return &objects.String{Value: s}, nil

vendor/github.com/d5/tengo/stdlib/text.go

@@ -32,6 +32,7 @@ var textModule = map[string]objects.Object{
 	"last_index_any": &objects.UserFunction{Name: "last_index_any", Value: FuncASSRI(strings.LastIndexAny)}, // last_index_any(s, chars) => int
 	"repeat":         &objects.UserFunction{Name: "repeat", Value: textRepeat},                              // repeat(s, count) => string
 	"replace":        &objects.UserFunction{Name: "replace", Value: textReplace},                            // replace(s, old, new, n) => string
+	"substr":         &objects.UserFunction{Name: "substr", Value: textSubstring},                           // substr(s, lower, upper) => string
 	"split":          &objects.UserFunction{Name: "split", Value: FuncASSRSs(strings.Split)},                // split(s, sep) => [string]
 	"split_after":    &objects.UserFunction{Name: "split_after", Value: FuncASSRSs(strings.SplitAfter)},     // split_after(s, sep) => [string]
 	"split_after_n":  &objects.UserFunction{Name: "split_after_n", Value: FuncASSIRSs(strings.SplitAfterN)}, // split_after_n(s, sep, n) => [string]
@@ -40,6 +41,9 @@ var textModule = map[string]objects.Object{
 	"to_lower":       &objects.UserFunction{Name: "to_lower", Value: FuncASRS(strings.ToLower)},             // to_lower(s) => string
 	"to_title":       &objects.UserFunction{Name: "to_title", Value: FuncASRS(strings.ToTitle)},             // to_title(s) => string
 	"to_upper":       &objects.UserFunction{Name: "to_upper", Value: FuncASRS(strings.ToUpper)},             // to_upper(s) => string
+	"pad_left":       &objects.UserFunction{Name: "pad_left", Value: textPadLeft},                           // pad_left(s, pad_len, pad_with) => string
+	"pad_right":      &objects.UserFunction{Name: "pad_right", Value: textPadRight},                         // pad_right(s, pad_len, pad_with) => string
+	"trim":           &objects.UserFunction{Name: "trim", Value: FuncASSRS(strings.Trim)},                   // trim(s, cutset) => string
 	"trim_left":      &objects.UserFunction{Name: "trim_left", Value: FuncASSRS(strings.TrimLeft)},          // trim_left(s, cutset) => string
 	"trim_prefix":    &objects.UserFunction{Name: "trim_prefix", Value: FuncASSRS(strings.TrimPrefix)},      // trim_prefix(s, prefix) => string
 	"trim_right":     &objects.UserFunction{Name: "trim_right", Value: FuncASSRS(strings.TrimRight)},        // trim_right(s, cutset) => string
@@ -376,6 +380,195 @@ func textReplace(args ...objects.Object) (ret objects.Object, err error) {
 	return
 }
 
+func textSubstring(args ...objects.Object) (ret objects.Object, err error) {
+	argslen := len(args)
+	if argslen != 2 && argslen != 3 {
+		err = objects.ErrWrongNumArguments
+		return
+	}
+
+	s1, ok := objects.ToString(args[0])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "first",
+			Expected: "string(compatible)",
+			Found:    args[0].TypeName(),
+		}
+		return
+	}
+
+	i2, ok := objects.ToInt(args[1])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "second",
+			Expected: "int(compatible)",
+			Found:    args[1].TypeName(),
+		}
+		return
+	}
+
+	strlen := len(s1)
+	i3 := strlen
+	if argslen == 3 {
+		i3, ok = objects.ToInt(args[2])
+		if !ok {
+			err = objects.ErrInvalidArgumentType{
+				Name:     "third",
+				Expected: "int(compatible)",
+				Found:    args[2].TypeName(),
+			}
+			return
+		}
+	}
+
+	if i2 > i3 {
+		err = objects.ErrInvalidIndexType
+		return
+	}
+
+	if i2 < 0 {
+		i2 = 0
+	} else if i2 > strlen {
+		i2 = strlen
+	}
+
+	if i3 < 0 {
+		i3 = 0
+	} else if i3 > strlen {
+		i3 = strlen
+	}
+
+	ret = &objects.String{Value: s1[i2:i3]}
+
+	return
+}
+
+func textPadLeft(args ...objects.Object) (ret objects.Object, err error) {
+	argslen := len(args)
+	if argslen != 2 && argslen != 3 {
+		err = objects.ErrWrongNumArguments
+		return
+	}
+
+	s1, ok := objects.ToString(args[0])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "first",
+			Expected: "string(compatible)",
+			Found:    args[0].TypeName(),
+		}
+		return
+	}
+
+	i2, ok := objects.ToInt(args[1])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "second",
+			Expected: "int(compatible)",
+			Found:    args[1].TypeName(),
+		}
+		return
+	}
+
+	if i2 > tengo.MaxStringLen {
+		return nil, objects.ErrStringLimit
+	}
+
+	sLen := len(s1)
+	if sLen >= i2 {
+		ret = &objects.String{Value: s1}
+		return
+	}
+
+	s3 := " "
+	if argslen == 3 {
+		s3, ok = objects.ToString(args[2])
+		if !ok {
+			err = objects.ErrInvalidArgumentType{
+				Name:     "third",
+				Expected: "string(compatible)",
+				Found:    args[2].TypeName(),
+			}
+			return
+		}
+	}
+
+	padStrLen := len(s3)
+	if padStrLen == 0 {
+		ret = &objects.String{Value: s1}
+		return
+	}
+
+	padCount := ((i2 - padStrLen) / padStrLen) + 1
+	retStr := strings.Repeat(s3, int(padCount)) + s1
+	ret = &objects.String{Value: retStr[len(retStr)-i2:]}
+
+	return
+}
+
+func textPadRight(args ...objects.Object) (ret objects.Object, err error) {
+	argslen := len(args)
+	if argslen != 2 && argslen != 3 {
+		err = objects.ErrWrongNumArguments
+		return
+	}
+
+	s1, ok := objects.ToString(args[0])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "first",
+			Expected: "string(compatible)",
+			Found:    args[0].TypeName(),
+		}
+		return
+	}
+
+	i2, ok := objects.ToInt(args[1])
+	if !ok {
+		err = objects.ErrInvalidArgumentType{
+			Name:     "second",
+			Expected: "int(compatible)",
+			Found:    args[1].TypeName(),
+		}
+		return
+	}
+
+	if i2 > tengo.MaxStringLen {
+		return nil, objects.ErrStringLimit
+	}
+
+	sLen := len(s1)
+	if sLen >= i2 {
+		ret = &objects.String{Value: s1}
+		return
+	}
+
+	s3 := " "
+	if argslen == 3 {
+		s3, ok = objects.ToString(args[2])
+		if !ok {
+			err = objects.ErrInvalidArgumentType{
+				Name:     "third",
+				Expected: "string(compatible)",
+				Found:    args[2].TypeName(),
+			}
+			return
+		}
+	}
+
+	padStrLen := len(s3)
+	if padStrLen == 0 {
+		ret = &objects.String{Value: s1}
+		return
+	}
+
+	padCount := ((i2 - padStrLen) / padStrLen) + 1
+	retStr := s1 + strings.Repeat(s3, int(padCount))
+	ret = &objects.String{Value: retStr[:i2]}
+
+	return
+}
+
 func textRepeat(args ...objects.Object) (ret objects.Object, err error) {
 	if len(args) != 2 {
 		return nil, objects.ErrWrongNumArguments

vendor/github.com/golang/protobuf/proto/decode.go

@@ -186,7 +186,6 @@ func (p *Buffer) DecodeVarint() (x uint64, err error) {
 	if b&0x80 == 0 {
 		goto done
 	}
-	// x -= 0x80 << 63 // Always zero.
 
 	return 0, errOverflow
 

vendor/github.com/golang/protobuf/proto/deprecated.go

@@ -0,0 +1,63 @@
+// Go support for Protocol Buffers - Google's data interchange format
+//
+// Copyright 2018 The Go Authors.  All rights reserved.
+// https://github.com/golang/protobuf
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//     * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//     * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//     * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+package proto
+
+import "errors"
+
+// Deprecated: do not use.
+type Stats struct{ Emalloc, Dmalloc, Encode, Decode, Chit, Cmiss, Size uint64 }
+
+// Deprecated: do not use.
+func GetStats() Stats { return Stats{} }
+
+// Deprecated: do not use.
+func MarshalMessageSet(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSet([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func MarshalMessageSetJSON(interface{}) ([]byte, error) {
+	return nil, errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func UnmarshalMessageSetJSON([]byte, interface{}) error {
+	return errors.New("proto: not implemented")
+}
+
+// Deprecated: do not use.
+func RegisterMessageSetType(Message, int32, string) {}

vendor/github.com/golang/protobuf/proto/equal.go

@@ -246,7 +246,8 @@ func equalExtMap(base reflect.Type, em1, em2 map[int32]Extension) bool {
 			return false
 		}
 
-		m1, m2 := e1.value, e2.value
+		m1 := extensionAsLegacyType(e1.value)
+		m2 := extensionAsLegacyType(e2.value)
 
 		if m1 == nil && m2 == nil {
 			// Both have only encoded form.

vendor/github.com/golang/protobuf/proto/extensions.go

@@ -185,9 +185,25 @@ type Extension struct {
 	// extension will have only enc set. When such an extension is
 	// accessed using GetExtension (or GetExtensions) desc and value
 	// will be set.
-	desc  *ExtensionDesc
+	desc *ExtensionDesc
+
+	// value is a concrete value for the extension field. Let the type of
+	// desc.ExtensionType be the "API type" and the type of Extension.value
+	// be the "storage type". The API type and storage type are the same except:
+	//	* For scalars (except []byte), the API type uses *T,
+	//	while the storage type uses T.
+	//	* For repeated fields, the API type uses []T, while the storage type
+	//	uses *[]T.
+	//
+	// The reason for the divergence is so that the storage type more naturally
+	// matches what is expected of when retrieving the values through the
+	// protobuf reflection APIs.
+	//
+	// The value may only be populated if desc is also populated.
 	value interface{}
-	enc   []byte
+
+	// enc is the raw bytes for the extension field.
+	enc []byte
 }
 
 // SetRawExtension is for testing only.
@@ -334,7 +350,7 @@ func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
 			// descriptors with the same field number.
 			return nil, errors.New("proto: descriptor conflict")
 		}
-		return e.value, nil
+		return extensionAsLegacyType(e.value), nil
 	}
 
 	if extension.ExtensionType == nil {
@@ -349,11 +365,11 @@ func GetExtension(pb Message, extension *ExtensionDesc) (interface{}, error) {
 
 	// Remember the decoded version and drop the encoded version.
 	// That way it is safe to mutate what we return.
-	e.value = v
+	e.value = extensionAsStorageType(v)
 	e.desc = extension
 	e.enc = nil
 	emap[extension.Field] = e
-	return e.value, nil
+	return extensionAsLegacyType(e.value), nil
 }
 
 // defaultExtensionValue returns the default value for extension.
@@ -488,7 +504,7 @@ func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error
 	}
 	typ := reflect.TypeOf(extension.ExtensionType)
 	if typ != reflect.TypeOf(value) {
-		return errors.New("proto: bad extension value type")
+		return fmt.Errorf("proto: bad extension value type. got: %T, want: %T", value, extension.ExtensionType)
 	}
 	// nil extension values need to be caught early, because the
 	// encoder can't distinguish an ErrNil due to a nil extension
@@ -500,7 +516,7 @@ func SetExtension(pb Message, extension *ExtensionDesc, value interface{}) error
 	}
 
 	extmap := epb.extensionsWrite()
-	extmap[extension.Field] = Extension{desc: extension, value: value}
+	extmap[extension.Field] = Extension{desc: extension, value: extensionAsStorageType(value)}
 	return nil
 }
 
@@ -541,3 +557,51 @@ func RegisterExtension(desc *ExtensionDesc) {
 func RegisteredExtensions(pb Message) map[int32]*ExtensionDesc {
 	return extensionMaps[reflect.TypeOf(pb).Elem()]
 }
+
+// extensionAsLegacyType converts an value in the storage type as the API type.
+// See Extension.value.
+func extensionAsLegacyType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+		// Represent primitive types as a pointer to the value.
+		rv2 := reflect.New(rv.Type())
+		rv2.Elem().Set(rv)
+		v = rv2.Interface()
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Slice:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	}
+	return v
+}
+
+// extensionAsStorageType converts an value in the API type as the storage type.
+// See Extension.value.
+func extensionAsStorageType(v interface{}) interface{} {
+	switch rv := reflect.ValueOf(v); rv.Kind() {
+	case reflect.Ptr:
+		// Represent slice types as the value itself.
+		switch rv.Type().Elem().Kind() {
+		case reflect.Bool, reflect.Int32, reflect.Int64, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64, reflect.String:
+			if rv.IsNil() {
+				v = reflect.Zero(rv.Type().Elem()).Interface()
+			} else {
+				v = rv.Elem().Interface()
+			}
+		}
+	case reflect.Slice:
+		// Represent slice types as a pointer to the value.
+		if rv.Type().Elem().Kind() != reflect.Uint8 {
+			rv2 := reflect.New(rv.Type())
+			rv2.Elem().Set(rv)
+			v = rv2.Interface()
+		}
+	}
+	return v
+}

vendor/github.com/golang/protobuf/proto/lib.go

@@ -341,26 +341,6 @@ type Message interface {
 	ProtoMessage()
 }
 
-// Stats records allocation details about the protocol buffer encoders
-// and decoders.  Useful for tuning the library itself.
-type Stats struct {
-	Emalloc uint64 // mallocs in encode
-	Dmalloc uint64 // mallocs in decode
-	Encode  uint64 // number of encodes
-	Decode  uint64 // number of decodes
-	Chit    uint64 // number of cache hits
-	Cmiss   uint64 // number of cache misses
-	Size    uint64 // number of sizes
-}
-
-// Set to true to enable stats collection.
-const collectStats = false
-
-var stats Stats
-
-// GetStats returns a copy of the global Stats structure.
-func GetStats() Stats { return stats }
-
 // A Buffer is a buffer manager for marshaling and unmarshaling
 // protocol buffers.  It may be reused between invocations to
 // reduce memory usage.  It is not necessary to use a Buffer;
@@ -960,13 +940,19 @@ func isProto3Zero(v reflect.Value) bool {
 	return false
 }
 
-// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion2 = true
+const (
+	// ProtoPackageIsVersion3 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion3 = true
 
-// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
-// to assert that that code is compatible with this version of the proto package.
-const ProtoPackageIsVersion1 = true
+	// ProtoPackageIsVersion2 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion2 = true
+
+	// ProtoPackageIsVersion1 is referenced from generated protocol buffer files
+	// to assert that that code is compatible with this version of the proto package.
+	ProtoPackageIsVersion1 = true
+)
 
 // InternalMessageInfo is a type used internally by generated .pb.go files.
 // This type is not intended to be used by non-generated code.

vendor/github.com/golang/protobuf/proto/message_set.go

@@ -36,13 +36,7 @@ package proto
  */
 
 import (
-	"bytes"
-	"encoding/json"
 	"errors"
-	"fmt"
-	"reflect"
-	"sort"
-	"sync"
 )
 
 // errNoMessageTypeID occurs when a protocol buffer does not have a message type ID.
@@ -145,46 +139,9 @@ func skipVarint(buf []byte) []byte {
 	return buf[i+1:]
 }
 
-// MarshalMessageSet encodes the extension map represented by m in the message set wire format.
-// It is called by generated Marshal methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSet(exts interface{}) ([]byte, error) {
-	return marshalMessageSet(exts, false)
-}
-
-// marshaMessageSet implements above function, with the opt to turn on / off deterministic during Marshal.
-func marshalMessageSet(exts interface{}, deterministic bool) ([]byte, error) {
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var u marshalInfo
-		siz := u.sizeMessageSet(exts)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, exts, deterministic)
-
-	case map[int32]Extension:
-		// This is an old-style extension map.
-		// Wrap it in a new-style XXX_InternalExtensions.
-		ie := XXX_InternalExtensions{
-			p: &struct {
-				mu           sync.Mutex
-				extensionMap map[int32]Extension
-			}{
-				extensionMap: exts,
-			},
-		}
-
-		var u marshalInfo
-		siz := u.sizeMessageSet(&ie)
-		b := make([]byte, 0, siz)
-		return u.appendMessageSet(b, &ie, deterministic)
-
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-}
-
-// UnmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
+// unmarshalMessageSet decodes the extension map encoded in buf in the message set wire format.
 // It is called by Unmarshal methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSet(buf []byte, exts interface{}) error {
+func unmarshalMessageSet(buf []byte, exts interface{}) error {
 	var m map[int32]Extension
 	switch exts := exts.(type) {
 	case *XXX_InternalExtensions:
@@ -222,93 +179,3 @@ func UnmarshalMessageSet(buf []byte, exts interface{}) error {
 	}
 	return nil
 }
-
-// MarshalMessageSetJSON encodes the extension map represented by m in JSON format.
-// It is called by generated MarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func MarshalMessageSetJSON(exts interface{}) ([]byte, error) {
-	var m map[int32]Extension
-	switch exts := exts.(type) {
-	case *XXX_InternalExtensions:
-		var mu sync.Locker
-		m, mu = exts.extensionsRead()
-		if m != nil {
-			// Keep the extensions map locked until we're done marshaling to prevent
-			// races between marshaling and unmarshaling the lazily-{en,de}coded
-			// values.
-			mu.Lock()
-			defer mu.Unlock()
-		}
-	case map[int32]Extension:
-		m = exts
-	default:
-		return nil, errors.New("proto: not an extension map")
-	}
-	var b bytes.Buffer
-	b.WriteByte('{')
-
-	// Process the map in key order for deterministic output.
-	ids := make([]int32, 0, len(m))
-	for id := range m {
-		ids = append(ids, id)
-	}
-	sort.Sort(int32Slice(ids)) // int32Slice defined in text.go
-
-	for i, id := range ids {
-		ext := m[id]
-		msd, ok := messageSetMap[id]
-		if !ok {
-			// Unknown type; we can't render it, so skip it.
-			continue
-		}
-
-		if i > 0 && b.Len() > 1 {
-			b.WriteByte(',')
-		}
-
-		fmt.Fprintf(&b, `"[%s]":`, msd.name)
-
-		x := ext.value
-		if x == nil {
-			x = reflect.New(msd.t.Elem()).Interface()
-			if err := Unmarshal(ext.enc, x.(Message)); err != nil {
-				return nil, err
-			}
-		}
-		d, err := json.Marshal(x)
-		if err != nil {
-			return nil, err
-		}
-		b.Write(d)
-	}
-	b.WriteByte('}')
-	return b.Bytes(), nil
-}
-
-// UnmarshalMessageSetJSON decodes the extension map encoded in buf in JSON format.
-// It is called by generated UnmarshalJSON methods on protocol buffer messages with the message_set_wire_format option.
-func UnmarshalMessageSetJSON(buf []byte, exts interface{}) error {
-	// Common-case fast path.
-	if len(buf) == 0 || bytes.Equal(buf, []byte("{}")) {
-		return nil
-	}
-
-	// This is fairly tricky, and it's not clear that it is needed.
-	return errors.New("TODO: UnmarshalMessageSetJSON not yet implemented")
-}
-
-// A global registry of types that can be used in a MessageSet.
-
-var messageSetMap = make(map[int32]messageSetDesc)
-
-type messageSetDesc struct {
-	t    reflect.Type // pointer to struct
-	name string
-}
-
-// RegisterMessageSetType is called from the generated code.
-func RegisterMessageSetType(m Message, fieldNum int32, name string) {
-	messageSetMap[fieldNum] = messageSetDesc{
-		t:    reflect.TypeOf(m),
-		name: name,
-	}
-}

vendor/github.com/golang/protobuf/proto/pointer_reflect.go

@@ -79,10 +79,13 @@ func toPointer(i *Message) pointer {
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) pointer {
 	v := reflect.ValueOf(*i)
 	u := reflect.New(v.Type())
 	u.Elem().Set(v)
+	if deref {
+		u = u.Elem()
+	}
 	return pointer{v: u}
 }
 

vendor/github.com/golang/protobuf/proto/pointer_unsafe.go

@@ -85,16 +85,21 @@ func toPointer(i *Message) pointer {
 
 // toAddrPointer converts an interface to a pointer that points to
 // the interface data.
-func toAddrPointer(i *interface{}, isptr bool) pointer {
+func toAddrPointer(i *interface{}, isptr, deref bool) (p pointer) {
 	// Super-tricky - read or get the address of data word of interface value.
 	if isptr {
 		// The interface is of pointer type, thus it is a direct interface.
 		// The data word is the pointer data itself. We take its address.
-		return pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+		p = pointer{p: unsafe.Pointer(uintptr(unsafe.Pointer(i)) + ptrSize)}
+	} else {
+		// The interface is not of pointer type. The data word is the pointer
+		// to the data.
+		p = pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
 	}
-	// The interface is not of pointer type. The data word is the pointer
-	// to the data.
-	return pointer{p: (*[2]unsafe.Pointer)(unsafe.Pointer(i))[1]}
+	if deref {
+		p.p = *(*unsafe.Pointer)(p.p)
+	}
+	return p
 }
 
 // valToPointer converts v to a pointer. v must be of pointer type.

vendor/github.com/golang/protobuf/proto/properties.go

@@ -334,9 +334,6 @@ func GetProperties(t reflect.Type) *StructProperties {
 	sprop, ok := propertiesMap[t]
 	propertiesMu.RUnlock()
 	if ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return sprop
 	}
 
@@ -346,17 +343,20 @@ func GetProperties(t reflect.Type) *StructProperties {
 	return sprop
 }
 
+type (
+	oneofFuncsIface interface {
+		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	}
+	oneofWrappersIface interface {
+		XXX_OneofWrappers() []interface{}
+	}
+)
+
 // getPropertiesLocked requires that propertiesMu is held.
 func getPropertiesLocked(t reflect.Type) *StructProperties {
 	if prop, ok := propertiesMap[t]; ok {
-		if collectStats {
-			stats.Chit++
-		}
 		return prop
 	}
-	if collectStats {
-		stats.Cmiss++
-	}
 
 	prop := new(StructProperties)
 	// in case of recursive protos, fill this in now.
@@ -391,13 +391,14 @@ func getPropertiesLocked(t reflect.Type) *StructProperties {
 	// Re-order prop.order.
 	sort.Sort(prop)
 
-	type oneofMessage interface {
-		XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
+	var oots []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oots = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oots = m.XXX_OneofWrappers()
 	}
-	if om, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
-		var oots []interface{}
-		_, _, _, oots = om.XXX_OneofFuncs()
-
+	if len(oots) > 0 {
 		// Interpret oneof metadata.
 		prop.OneofTypes = make(map[string]*OneofProperties)
 		for _, oot := range oots {

vendor/github.com/golang/protobuf/proto/table_marshal.go

@@ -87,6 +87,7 @@ type marshalElemInfo struct {
 	sizer     sizer
 	marshaler marshaler
 	isptr     bool // elem is pointer typed, thus interface of this type is a direct interface (extension only)
+	deref     bool // dereference the pointer before operating on it; implies isptr
 }
 
 var (
@@ -320,8 +321,11 @@ func (u *marshalInfo) computeMarshalInfo() {
 
 	// get oneof implementers
 	var oneofImplementers []interface{}
-	if m, ok := reflect.Zero(reflect.PtrTo(t)).Interface().(oneofMessage); ok {
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
 		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
 	}
 
 	n := t.NumField()
@@ -407,13 +411,22 @@ func (u *marshalInfo) getExtElemInfo(desc *ExtensionDesc) *marshalElemInfo {
 		panic("tag is not an integer")
 	}
 	wt := wiretype(tags[0])
+	if t.Kind() == reflect.Ptr && t.Elem().Kind() != reflect.Struct {
+		t = t.Elem()
+	}
 	sizer, marshaler := typeMarshaler(t, tags, false, false)
+	var deref bool
+	if t.Kind() == reflect.Slice && t.Elem().Kind() != reflect.Uint8 {
+		t = reflect.PtrTo(t)
+		deref = true
+	}
 	e = &marshalElemInfo{
 		wiretag:   uint64(tag)<<3 | wt,
 		tagsize:   SizeVarint(uint64(tag) << 3),
 		sizer:     sizer,
 		marshaler: marshaler,
 		isptr:     t.Kind() == reflect.Ptr,
+		deref:     deref,
 	}
 
 	// update cache
@@ -448,7 +461,7 @@ func (fi *marshalFieldInfo) computeMarshalFieldInfo(f *reflect.StructField) {
 
 func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofImplementers []interface{}) {
 	fi.field = toField(f)
-	fi.wiretag = 1<<31 - 1 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
+	fi.wiretag = math.MaxInt32 // Use a large tag number, make oneofs sorted at the end. This tag will not appear on the wire.
 	fi.isPointer = true
 	fi.sizer, fi.marshaler = makeOneOfMarshaler(fi, f)
 	fi.oneofElems = make(map[reflect.Type]*marshalElemInfo)
@@ -476,10 +489,6 @@ func (fi *marshalFieldInfo) computeOneofFieldInfo(f *reflect.StructField, oneofI
 	}
 }
 
-type oneofMessage interface {
-	XXX_OneofFuncs() (func(Message, *Buffer) error, func(Message, int, int, *Buffer) (bool, error), func(Message) int, []interface{})
-}
-
 // wiretype returns the wire encoding of the type.
 func wiretype(encoding string) uint64 {
 	switch encoding {
@@ -2310,8 +2319,8 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 			for _, k := range m.MapKeys() {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)             // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr)          // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)      // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false)   // pointer to value
 				siz := keySizer(kaddr, 1) + valSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				n += siz + SizeVarint(uint64(siz)) + tagsize
 			}
@@ -2329,8 +2338,8 @@ func makeMapMarshaler(f *reflect.StructField) (sizer, marshaler) {
 			for _, k := range keys {
 				ki := k.Interface()
 				vi := m.MapIndex(k).Interface()
-				kaddr := toAddrPointer(&ki, false)    // pointer to key
-				vaddr := toAddrPointer(&vi, valIsPtr) // pointer to value
+				kaddr := toAddrPointer(&ki, false, false)    // pointer to key
+				vaddr := toAddrPointer(&vi, valIsPtr, false) // pointer to value
 				b = appendVarint(b, tag)
 				siz := keySizer(kaddr, 1) + valCachedSizer(vaddr, 1) // tag of key = 1 (size=1), tag of val = 2 (size=1)
 				b = appendVarint(b, uint64(siz))
@@ -2399,7 +2408,7 @@ func (u *marshalInfo) sizeExtensions(ext *XXX_InternalExtensions) int {
 		// the last time this function was called.
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	mu.Unlock()
@@ -2434,7 +2443,7 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2465,7 +2474,7 @@ func (u *marshalInfo) appendExtensions(b []byte, ext *XXX_InternalExtensions, de
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err
@@ -2510,7 +2519,7 @@ func (u *marshalInfo) sizeMessageSet(ext *XXX_InternalExtensions) int {
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, 1) // message, tag = 3 (size=1)
 	}
 	mu.Unlock()
@@ -2553,7 +2562,7 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 
 			ei := u.getExtElemInfo(e.desc)
 			v := e.value
-			p := toAddrPointer(&v, ei.isptr)
+			p := toAddrPointer(&v, ei.isptr, ei.deref)
 			b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 			if !nerr.Merge(err) {
 				return b, err
@@ -2591,7 +2600,7 @@ func (u *marshalInfo) appendMessageSet(b []byte, ext *XXX_InternalExtensions, de
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, 3<<3|WireBytes, deterministic)
 		b = append(b, 1<<3|WireEndGroup)
 		if !nerr.Merge(err) {
@@ -2621,7 +2630,7 @@ func (u *marshalInfo) sizeV1Extensions(m map[int32]Extension) int {
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		n += ei.sizer(p, ei.tagsize)
 	}
 	return n
@@ -2656,7 +2665,7 @@ func (u *marshalInfo) appendV1Extensions(b []byte, m map[int32]Extension, determ
 
 		ei := u.getExtElemInfo(e.desc)
 		v := e.value
-		p := toAddrPointer(&v, ei.isptr)
+		p := toAddrPointer(&v, ei.isptr, ei.deref)
 		b, err = ei.marshaler(b, p, ei.wiretag, deterministic)
 		if !nerr.Merge(err) {
 			return b, err

vendor/github.com/golang/protobuf/proto/table_unmarshal.go

@@ -136,7 +136,7 @@ func (u *unmarshalInfo) unmarshal(m pointer, b []byte) error {
 		u.computeUnmarshalInfo()
 	}
 	if u.isMessageSet {
-		return UnmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
+		return unmarshalMessageSet(b, m.offset(u.extensions).toExtensions())
 	}
 	var reqMask uint64 // bitmask of required fields we've seen.
 	var errLater error
@@ -362,46 +362,48 @@ func (u *unmarshalInfo) computeUnmarshalInfo() {
 	}
 
 	// Find any types associated with oneof fields.
-	// TODO: XXX_OneofFuncs returns more info than we need.  Get rid of some of it?
-	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("XXX_OneofFuncs")
-	if fn.IsValid() {
-		res := fn.Call(nil)[3] // last return value from XXX_OneofFuncs: []interface{}
-		for i := res.Len() - 1; i >= 0; i-- {
-			v := res.Index(i)                             // interface{}
-			tptr := reflect.ValueOf(v.Interface()).Type() // *Msg_X
-			typ := tptr.Elem()                            // Msg_X
+	var oneofImplementers []interface{}
+	switch m := reflect.Zero(reflect.PtrTo(t)).Interface().(type) {
+	case oneofFuncsIface:
+		_, _, _, oneofImplementers = m.XXX_OneofFuncs()
+	case oneofWrappersIface:
+		oneofImplementers = m.XXX_OneofWrappers()
+	}
+	for _, v := range oneofImplementers {
+		tptr := reflect.TypeOf(v) // *Msg_X
+		typ := tptr.Elem()        // Msg_X
 
-			f := typ.Field(0) // oneof implementers have one field
-			baseUnmarshal := fieldUnmarshaler(&f)
-			tags := strings.Split(f.Tag.Get("protobuf"), ",")
-			fieldNum, err := strconv.Atoi(tags[1])
-			if err != nil {
-				panic("protobuf tag field not an integer: " + tags[1])
-			}
-			var name string
-			for _, tag := range tags {
-				if strings.HasPrefix(tag, "name=") {
-					name = strings.TrimPrefix(tag, "name=")
-					break
-				}
-			}
-
-			// Find the oneof field that this struct implements.
-			// Might take O(n^2) to process all of the oneofs, but who cares.
-			for _, of := range oneofFields {
-				if tptr.Implements(of.ityp) {
-					// We have found the corresponding interface for this struct.
-					// That lets us know where this struct should be stored
-					// when we encounter it during unmarshaling.
-					unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
-					u.setTag(fieldNum, of.field, unmarshal, 0, name)
-				}
+		f := typ.Field(0) // oneof implementers have one field
+		baseUnmarshal := fieldUnmarshaler(&f)
+		tags := strings.Split(f.Tag.Get("protobuf"), ",")
+		fieldNum, err := strconv.Atoi(tags[1])
+		if err != nil {
+			panic("protobuf tag field not an integer: " + tags[1])
+		}
+		var name string
+		for _, tag := range tags {
+			if strings.HasPrefix(tag, "name=") {
+				name = strings.TrimPrefix(tag, "name=")
+				break
 			}
 		}
+
+		// Find the oneof field that this struct implements.
+		// Might take O(n^2) to process all of the oneofs, but who cares.
+		for _, of := range oneofFields {
+			if tptr.Implements(of.ityp) {
+				// We have found the corresponding interface for this struct.
+				// That lets us know where this struct should be stored
+				// when we encounter it during unmarshaling.
+				unmarshal := makeUnmarshalOneof(typ, of.ityp, baseUnmarshal)
+				u.setTag(fieldNum, of.field, unmarshal, 0, name)
+			}
+		}
+
 	}
 
 	// Get extension ranges, if any.
-	fn = reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
+	fn := reflect.Zero(reflect.PtrTo(t)).MethodByName("ExtensionRangeArray")
 	if fn.IsValid() {
 		if !u.extensions.IsValid() && !u.oldExtensions.IsValid() {
 			panic("a message with extensions, but no extensions field in " + t.Name())
@@ -1948,7 +1950,7 @@ func encodeVarint(b []byte, x uint64) []byte {
 // If there is an error, it returns 0,0.
 func decodeVarint(b []byte) (uint64, int) {
 	var x, y uint64
-	if len(b) <= 0 {
+	if len(b) == 0 {
 		goto bad
 	}
 	x = uint64(b[0])

vendor/github.com/golang/protobuf/protoc-gen-go/descriptor/descriptor.proto

@@ -417,6 +417,17 @@ message FileOptions {
   // determining the namespace.
   optional string php_namespace = 41;
 
+
+  // Use this option to change the namespace of php generated metadata classes.
+  // Default is empty. When this option is empty, the proto file name will be used
+  // for determining the namespace.
+  optional string php_metadata_namespace = 44;
+
+  // Use this option to change the package of ruby generated classes. Default
+  // is empty. When this option is not set, the package name will be used for
+  // determining the ruby package.
+  optional string ruby_package = 45;
+
   // The parser stores options it doesn't recognize here.
   // See the documentation for the "Options" section above.
   repeated UninterpretedOption uninterpreted_option = 999;

vendor/github.com/gorilla/schema/README.md

@@ -11,7 +11,7 @@ Package gorilla/schema converts structs to and from form values.
 Here's a quick example: we parse POST form values and then decode them into a struct:
 
 ```go
-// Set a Decoder instance as a package global, because it caches 
+// Set a Decoder instance as a package global, because it caches
 // meta-data about structs, and an instance can be shared safely.
 var decoder = schema.NewDecoder()
 
@@ -27,9 +27,9 @@ func MyHandler(w http.ResponseWriter, r *http.Request) {
     }
 
     var person Person
-    
+
     // r.PostForm is a map of our POST form values
-    err := decoder.Decode(&person, r.PostForm)
+    err = decoder.Decode(&person, r.PostForm)
     if err != nil {
         // Handle error
     }
@@ -64,9 +64,9 @@ To define custom names for fields, use a struct tag "schema". To not populate ce
 
 ```go
 type Person struct {
-    Name  string `schema:"name"`  // custom name
-    Phone string `schema:"phone"` // custom name
-    Admin bool   `schema:"-"`     // this field is never set
+    Name  string `schema:"name,required"`  // custom name, must be supplied
+    Phone string `schema:"phone"`          // custom name
+    Admin bool   `schema:"-"`              // this field is never set
 }
 ```
 
@@ -83,8 +83,8 @@ The supported field types in the struct are:
 
 Unsupported types are simply ignored, however custom types can be registered to be converted.
 
-More examples are available on the Gorilla website: http://www.gorillatoolkit.org/pkg/schema
+More examples are available on the Gorilla website: https://www.gorillatoolkit.org/pkg/schema
 
-## License 
+## License
 
 BSD licensed. See the LICENSE file for details.

vendor/github.com/gorilla/schema/cache.go

@@ -117,7 +117,7 @@ func (c *cache) get(t reflect.Type) *structInfo {
 	info := c.m[t]
 	c.l.RUnlock()
 	if info == nil {
-		info = c.create(t, nil)
+		info = c.create(t, "")
 		c.l.Lock()
 		c.m[t] = info
 		c.l.Unlock()
@@ -126,37 +126,40 @@ func (c *cache) get(t reflect.Type) *structInfo {
 }
 
 // create creates a structInfo with meta-data about a struct.
-func (c *cache) create(t reflect.Type, info *structInfo) *structInfo {
-	if info == nil {
-		info = &structInfo{fields: []*fieldInfo{}}
-	}
+func (c *cache) create(t reflect.Type, parentAlias string) *structInfo {
+	info := &structInfo{}
+	var anonymousInfos []*structInfo
 	for i := 0; i < t.NumField(); i++ {
-		field := t.Field(i)
-		if field.Anonymous {
-			ft := field.Type
-			if ft.Kind() == reflect.Ptr {
-				ft = ft.Elem()
-			}
-			if ft.Kind() == reflect.Struct {
-				bef := len(info.fields)
-				c.create(ft, info)
-				for _, fi := range info.fields[bef:len(info.fields)] {
-					// exclude required check because duplicated to embedded field
-					fi.isRequired = false
-				}
+		if f := c.createField(t.Field(i), parentAlias); f != nil {
+			info.fields = append(info.fields, f)
+			if ft := indirectType(f.typ); ft.Kind() == reflect.Struct && f.isAnonymous {
+				anonymousInfos = append(anonymousInfos, c.create(ft, f.canonicalAlias))
+			}
+		}
+	}
+	for i, a := range anonymousInfos {
+		others := []*structInfo{info}
+		others = append(others, anonymousInfos[:i]...)
+		others = append(others, anonymousInfos[i+1:]...)
+		for _, f := range a.fields {
+			if !containsAlias(others, f.alias) {
+				info.fields = append(info.fields, f)
 			}
 		}
-		c.createField(field, info)
 	}
 	return info
 }
 
 // createField creates a fieldInfo for the given field.
-func (c *cache) createField(field reflect.StructField, info *structInfo) {
+func (c *cache) createField(field reflect.StructField, parentAlias string) *fieldInfo {
 	alias, options := fieldAlias(field, c.tag)
 	if alias == "-" {
 		// Ignore this field.
-		return
+		return nil
+	}
+	canonicalAlias := alias
+	if parentAlias != "" {
+		canonicalAlias = parentAlias + "." + alias
 	}
 	// Check if the type is supported and don't cache it if not.
 	// First let's get the basic type.
@@ -181,19 +184,20 @@ func (c *cache) createField(field reflect.StructField, info *structInfo) {
 	if isStruct = ft.Kind() == reflect.Struct; !isStruct {
 		if c.converter(ft) == nil && builtinConverters[ft.Kind()] == nil {
 			// Type is not supported.
-			return
+			return nil
 		}
 	}
 
-	info.fields = append(info.fields, &fieldInfo{
+	return &fieldInfo{
 		typ:              field.Type,
 		name:             field.Name,
 		alias:            alias,
+		canonicalAlias:   canonicalAlias,
 		unmarshalerInfo:  m,
 		isSliceOfStructs: isSlice && isStruct,
 		isAnonymous:      field.Anonymous,
 		isRequired:       options.Contains("required"),
-	})
+	}
 }
 
 // converter returns the converter for a type.
@@ -216,11 +220,26 @@ func (i *structInfo) get(alias string) *fieldInfo {
 	return nil
 }
 
+func containsAlias(infos []*structInfo, alias string) bool {
+	for _, info := range infos {
+		if info.get(alias) != nil {
+			return true
+		}
+	}
+	return false
+}
+
 type fieldInfo struct {
 	typ reflect.Type
 	// name is the field name in the struct.
 	name  string
 	alias string
+	// canonicalAlias is almost the same as the alias, but is prefixed with
+	// an embedded struct field alias in dotted notation if this field is
+	// promoted from the struct.
+	// For instance, if the alias is "N" and this field is an embedded field
+	// in a struct "X", canonicalAlias will be "X.N".
+	canonicalAlias string
 	// unmarshalerInfo contains information regarding the
 	// encoding.TextUnmarshaler implementation of the field type.
 	unmarshalerInfo unmarshaler
@@ -231,6 +250,13 @@ type fieldInfo struct {
 	isRequired  bool
 }
 
+func (f *fieldInfo) paths(prefix string) []string {
+	if f.alias == f.canonicalAlias {
+		return []string{prefix + f.alias}
+	}
+	return []string{prefix + f.alias, prefix + f.canonicalAlias}
+}
+
 type pathPart struct {
 	field *fieldInfo
 	path  []string // path to the field: walks structs using field names.
@@ -239,6 +265,13 @@ type pathPart struct {
 
 // ----------------------------------------------------------------------------
 
+func indirectType(typ reflect.Type) reflect.Type {
+	if typ.Kind() == reflect.Ptr {
+		return typ.Elem()
+	}
+	return typ
+}
+
 // fieldAlias parses a field tag to get a field alias.
 func fieldAlias(field reflect.StructField, tagName string) (alias string, options tagOptions) {
 	if tag := field.Tag.Get(tagName); tag != "" {

vendor/github.com/gorilla/schema/decoder.go

@@ -81,52 +81,83 @@ func (d *Decoder) Decode(dst interface{}, src map[string][]string) error {
 				errors[path] = err
 			}
 		} else if !d.ignoreUnknownKeys {
-			errors[path] = fmt.Errorf("schema: invalid path %q", path)
+			errors[path] = UnknownKeyError{Key: path}
 		}
 	}
+	errors.merge(d.checkRequired(t, src))
 	if len(errors) > 0 {
 		return errors
 	}
-	return d.checkRequired(t, src, "")
+	return nil
 }
 
 // checkRequired checks whether required fields are empty
 //
-// check type t recursively if t has struct fields, and prefix is same as parsePath: in dotted notation
+// check type t recursively if t has struct fields.
 //
 // src is the source map for decoding, we use it here to see if those required fields are included in src
-func (d *Decoder) checkRequired(t reflect.Type, src map[string][]string, prefix string) error {
+func (d *Decoder) checkRequired(t reflect.Type, src map[string][]string) MultiError {
+	m, errs := d.findRequiredFields(t, "", "")
+	for key, fields := range m {
+		if isEmptyFields(fields, src) {
+			errs[key] = EmptyFieldError{Key: key}
+		}
+	}
+	return errs
+}
+
+// findRequiredFields recursively searches the struct type t for required fields.
+//
+// canonicalPrefix and searchPrefix are used to resolve full paths in dotted notation
+// for nested struct fields. canonicalPrefix is a complete path which never omits
+// any embedded struct fields. searchPrefix is a user-friendly path which may omit
+// some embedded struct fields to point promoted fields.
+func (d *Decoder) findRequiredFields(t reflect.Type, canonicalPrefix, searchPrefix string) (map[string][]fieldWithPrefix, MultiError) {
 	struc := d.cache.get(t)
 	if struc == nil {
 		// unexpect, cache.get never return nil
-		return errors.New("cache fail")
+		return nil, MultiError{canonicalPrefix + "*": errors.New("cache fail")}
 	}
 
+	m := map[string][]fieldWithPrefix{}
+	errs := MultiError{}
 	for _, f := range struc.fields {
 		if f.typ.Kind() == reflect.Struct {
-			err := d.checkRequired(f.typ, src, prefix+f.alias+".")
-			if err != nil {
-				if !f.isAnonymous {
-					return err
-				}
-				// check embedded parent field.
-				err2 := d.checkRequired(f.typ, src, prefix)
-				if err2 != nil {
-					return err
+			fcprefix := canonicalPrefix + f.canonicalAlias + "."
+			for _, fspath := range f.paths(searchPrefix) {
+				fm, ferrs := d.findRequiredFields(f.typ, fcprefix, fspath+".")
+				for key, fields := range fm {
+					m[key] = append(m[key], fields...)
 				}
+				errs.merge(ferrs)
 			}
 		}
 		if f.isRequired {
-			key := f.alias
-			if prefix != "" {
-				key = prefix + key
-			}
-			if isEmpty(f.typ, src[key]) {
-				return fmt.Errorf("%v is empty", key)
+			key := canonicalPrefix + f.canonicalAlias
+			m[key] = append(m[key], fieldWithPrefix{
+				fieldInfo: f,
+				prefix:    searchPrefix,
+			})
+		}
+	}
+	return m, errs
+}
+
+type fieldWithPrefix struct {
+	*fieldInfo
+	prefix string
+}
+
+// isEmptyFields returns true if all of specified fields are empty.
+func isEmptyFields(fields []fieldWithPrefix, src map[string][]string) bool {
+	for _, f := range fields {
+		for _, path := range f.paths(f.prefix) {
+			if !isEmpty(f.typ, src[path]) {
+				return false
 			}
 		}
 	}
-	return nil
+	return true
 }
 
 // isEmpty returns true if value is empty for specific type
@@ -424,6 +455,24 @@ func (e ConversionError) Error() string {
 	return output
 }
 
+// UnknownKeyError stores information about an unknown key in the source map.
+type UnknownKeyError struct {
+	Key string // key from the source map.
+}
+
+func (e UnknownKeyError) Error() string {
+	return fmt.Sprintf("schema: invalid path %q", e.Key)
+}
+
+// EmptyFieldError stores information about an empty required field.
+type EmptyFieldError struct {
+	Key string // required key in the source map.
+}
+
+func (e EmptyFieldError) Error() string {
+	return fmt.Sprintf("%v is empty", e.Key)
+}
+
 // MultiError stores multiple decoding errors.
 //
 // Borrowed from the App Engine SDK.
@@ -445,3 +494,11 @@ func (e MultiError) Error() string {
 	}
 	return fmt.Sprintf("%s (and %d other errors)", s, len(e)-1)
 }
+
+func (e MultiError) merge(errors MultiError) {
+	for key, err := range errors {
+		if e[key] == nil {
+			e[key] = err
+		}
+	}
+}

vendor/github.com/hashicorp/golang-lru/lru.go

@@ -40,31 +40,35 @@ func (c *Cache) Purge() {
 // Add adds a value to the cache.  Returns true if an eviction occurred.
 func (c *Cache) Add(key, value interface{}) (evicted bool) {
 	c.lock.Lock()
-	defer c.lock.Unlock()
-	return c.lru.Add(key, value)
+	evicted = c.lru.Add(key, value)
+	c.lock.Unlock()
+	return evicted
 }
 
 // Get looks up a key's value from the cache.
 func (c *Cache) Get(key interface{}) (value interface{}, ok bool) {
 	c.lock.Lock()
-	defer c.lock.Unlock()
-	return c.lru.Get(key)
+	value, ok = c.lru.Get(key)
+	c.lock.Unlock()
+	return value, ok
 }
 
 // Contains checks if a key is in the cache, without updating the
 // recent-ness or deleting it for being stale.
 func (c *Cache) Contains(key interface{}) bool {
 	c.lock.RLock()
-	defer c.lock.RUnlock()
-	return c.lru.Contains(key)
+	containKey := c.lru.Contains(key)
+	c.lock.RUnlock()
+	return containKey
 }
 
 // Peek returns the key value (or undefined if not found) without updating
 // the "recently used"-ness of the key.
 func (c *Cache) Peek(key interface{}) (value interface{}, ok bool) {
 	c.lock.RLock()
-	defer c.lock.RUnlock()
-	return c.lru.Peek(key)
+	value, ok = c.lru.Peek(key)
+	c.lock.RUnlock()
+	return value, ok
 }
 
 // ContainsOrAdd checks if a key is in the cache  without updating the
@@ -98,13 +102,15 @@ func (c *Cache) RemoveOldest() {
 // Keys returns a slice of the keys in the cache, from oldest to newest.
 func (c *Cache) Keys() []interface{} {
 	c.lock.RLock()
-	defer c.lock.RUnlock()
-	return c.lru.Keys()
+	keys := c.lru.Keys()
+	c.lock.RUnlock()
+	return keys
 }
 
 // Len returns the number of items in the cache.
 func (c *Cache) Len() int {
 	c.lock.RLock()
-	defer c.lock.RUnlock()
-	return c.lru.Len()
+	length := c.lru.Len()
+	c.lock.RUnlock()
+	return length
 }

vendor/github.com/labstack/echo/v4/.travis.yml

@@ -1,6 +1,7 @@
 language: go
 go:
   - 1.11.x
+  - 1.12.x
   - tip
 env:
   - GO111MODULE=on