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Split Discord bridge in multiple files (#632)

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This commit is contained in:
Duco van Amstel
2018-12-07 22:36:01 +00:00
committed by Wim
parent af7a00d030
commit 0365c0786a
4 changed files with 412 additions and 257 deletions
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309
bridge/discord/discord.go
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@@ -2,9 +2,7 @@ package bdiscord
import (
"bytes"
"errors"
"fmt"
"regexp"
"strings"
"sync"
@@ -17,18 +15,23 @@ import (
const MessageLength = 1950
type Bdiscord struct {
c *discordgo.Session
Channels []*discordgo.Channel
Nick string
UseChannelID bool
userMemberMap map[string]*discordgo.Member
nickMemberMap map[string]*discordgo.Member
guildID string
webhookID string
webhookToken string
channelInfoMap map[string]*config.ChannelInfo
sync.RWMutex
*bridge.Config
c *discordgo.Session
nick string
useChannelID bool
guildID string
webhookID string
webhookToken string
channelsMutex sync.RWMutex
channels []*discordgo.Channel
channelInfoMap map[string]*config.ChannelInfo
membersMutex sync.RWMutex
userMemberMap map[string]*discordgo.Member
nickMemberMap map[string]*discordgo.Member
}
func New(cfg *bridge.Config) bridge.Bridger {
@@ -77,28 +80,40 @@ func (b *Bdiscord) Connect() error {
return err
}
serverName := strings.Replace(b.GetString("Server"), "ID:", "", -1)
b.Nick = userinfo.Username
b.nick = userinfo.Username
b.channelsMutex.Lock()
for _, guild := range guilds {
if guild.Name == serverName || guild.ID == serverName {
b.Channels, err = b.c.GuildChannels(guild.ID)
b.channels, err = b.c.GuildChannels(guild.ID)
b.guildID = guild.ID
if err != nil {
return err
break
}
}
}
for _, channel := range b.Channels {
b.channelsMutex.Unlock()
if err != nil {
return err
}
b.channelsMutex.RLock()
for _, channel := range b.channels {
b.Log.Debugf("found channel %#v", channel)
}
// obtaining guild members and initializing nickname mapping
b.Lock()
defer b.Unlock()
b.channelsMutex.RUnlock()
// Obtaining guild members and initializing nickname mapping.
b.membersMutex.Lock()
defer b.membersMutex.Unlock()
members, err := b.c.GuildMembers(b.guildID, "", 1000)
if err != nil {
b.Log.Error("Error obtaining guild members", err)
return err
}
for _, member := range members {
if member == nil {
b.Log.Warnf("Skipping missing information for a user.")
continue
}
b.userMemberMap[member.User.ID] = member
b.nickMemberMap[member.User.Username] = member
if member.Nick != "" {
@@ -113,10 +128,13 @@ func (b *Bdiscord) Disconnect() error {
}
func (b *Bdiscord) JoinChannel(channel config.ChannelInfo) error {
b.channelsMutex.Lock()
defer b.channelsMutex.Unlock()
b.channelInfoMap[channel.ID] = &channel
idcheck := strings.Split(channel.Name, "ID:")
if len(idcheck) > 1 {
b.UseChannelID = true
b.useChannelID = true
}
return nil
}
@@ -139,11 +157,13 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
wToken := b.webhookToken
// check if have a channel specific webhook
b.channelsMutex.RLock()
if ci, ok := b.channelInfoMap[msg.Channel+b.Account]; ok {
if ci.Options.WebhookURL != "" {
wID, wToken = b.splitURL(ci.Options.WebhookURL)
}
}
b.channelsMutex.RUnlock()
// Use webhook to send the message
if wID != "" {
@@ -196,7 +216,9 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
if msg.Extra != nil {
for _, rmsg := range helper.HandleExtra(&msg, b.General) {
rmsg.Text = helper.ClipMessage(rmsg.Text, MessageLength)
b.c.ChannelMessageSend(channelID, rmsg.Username+rmsg.Text)
if _, err := b.c.ChannelMessageSend(channelID, rmsg.Username+rmsg.Text); err != nil {
b.Log.Errorf("Could not send message %#v: %v", rmsg, err)
}
}
// check if we have files to upload (from slack, telegram or mattermost)
if len(msg.Extra["file"]) > 0 {
@@ -221,246 +243,15 @@ func (b *Bdiscord) Send(msg config.Message) (string, error) {
return res.ID, err
}
func (b *Bdiscord) messageDelete(s *discordgo.Session, m *discordgo.MessageDelete) {
rmsg := config.Message{Account: b.Account, ID: m.ID, Event: config.EventMsgDelete, Text: config.EventMsgDelete}
rmsg.Channel = b.getChannelName(m.ChannelID)
if b.UseChannelID {
rmsg.Channel = "ID:" + m.ChannelID
}
b.Log.Debugf("<= Sending message from %s to gateway", b.Account)
b.Log.Debugf("<= Message is %#v", rmsg)
b.Remote <- rmsg
}
func (b *Bdiscord) messageUpdate(s *discordgo.Session, m *discordgo.MessageUpdate) {
if b.GetBool("EditDisable") {
return
}
// only when message is actually edited
if m.Message.EditedTimestamp != "" {
b.Log.Debugf("Sending edit message")
m.Content += b.GetString("EditSuffix")
b.messageCreate(s, (*discordgo.MessageCreate)(m))
}
}
func (b *Bdiscord) messageCreate(s *discordgo.Session, m *discordgo.MessageCreate) {
var err error
// not relay our own messages
if m.Author.Username == b.Nick {
return
}
// if using webhooks, do not relay if it's ours
if b.useWebhook() && m.Author.Bot && b.isWebhookID(m.Author.ID) {
return
}
// add the url of the attachments to content
if len(m.Attachments) > 0 {
for _, attach := range m.Attachments {
m.Content = m.Content + "\n" + attach.URL
}
}
rmsg := config.Message{Account: b.Account, Avatar: "https://cdn.discordapp.com/avatars/" + m.Author.ID + "/" + m.Author.Avatar + ".jpg", UserID: m.Author.ID, ID: m.ID}
if m.Content != "" {
b.Log.Debugf("== Receiving event %#v", m.Message)
m.Message.Content = b.stripCustomoji(m.Message.Content)
m.Message.Content = b.replaceChannelMentions(m.Message.Content)
rmsg.Text, err = m.ContentWithMoreMentionsReplaced(b.c)
if err != nil {
b.Log.Errorf("ContentWithMoreMentionsReplaced failed: %s", err)
rmsg.Text = m.ContentWithMentionsReplaced()
}
}
// set channel name
rmsg.Channel = b.getChannelName(m.ChannelID)
if b.UseChannelID {
rmsg.Channel = "ID:" + m.ChannelID
}
// set username
if !b.GetBool("UseUserName") {
rmsg.Username = b.getNick(m.Author)
} else {
rmsg.Username = m.Author.Username
}
// if we have embedded content add it to text
if b.GetBool("ShowEmbeds") && m.Message.Embeds != nil {
for _, embed := range m.Message.Embeds {
rmsg.Text = rmsg.Text + "embed: " + embed.Title + " - " + embed.Description + " - " + embed.URL + "\n"
}
}
// no empty messages
if rmsg.Text == "" {
return
}
// do we have a /me action
var ok bool
rmsg.Text, ok = b.replaceAction(rmsg.Text)
if ok {
rmsg.Event = config.EventUserAction
}
b.Log.Debugf("<= Sending message from %s on %s to gateway", m.Author.Username, b.Account)
b.Log.Debugf("<= Message is %#v", rmsg)
b.Remote <- rmsg
}
func (b *Bdiscord) memberUpdate(s *discordgo.Session, m *discordgo.GuildMemberUpdate) {
b.Lock()
if _, ok := b.userMemberMap[m.Member.User.ID]; ok {
b.Log.Debugf("%s: memberupdate: user %s (nick %s) changes nick to %s", b.Account, m.Member.User.Username, b.userMemberMap[m.Member.User.ID].Nick, m.Member.Nick)
}
b.userMemberMap[m.Member.User.ID] = m.Member
b.nickMemberMap[m.Member.User.Username] = m.Member
if m.Member.Nick != "" {
b.nickMemberMap[m.Member.Nick] = m.Member
}
b.Unlock()
}
func (b *Bdiscord) getNick(user *discordgo.User) string {
var err error
b.Lock()
defer b.Unlock()
if _, ok := b.userMemberMap[user.ID]; ok {
if b.userMemberMap[user.ID] != nil {
if b.userMemberMap[user.ID].Nick != "" {
// only return if nick is set
return b.userMemberMap[user.ID].Nick
}
// otherwise return username
return user.Username
}
}
// if we didn't find nick, search for it
member, err := b.c.GuildMember(b.guildID, user.ID)
if err != nil {
return user.Username
}
b.userMemberMap[user.ID] = member
// only return if nick is set
if b.userMemberMap[user.ID].Nick != "" {
return b.userMemberMap[user.ID].Nick
}
return user.Username
}
func (b *Bdiscord) getGuildMemberByNick(nick string) (*discordgo.Member, error) {
b.Lock()
defer b.Unlock()
if _, ok := b.nickMemberMap[nick]; ok {
if b.nickMemberMap[nick] != nil {
return b.nickMemberMap[nick], nil
}
}
return nil, errors.New("Couldn't find guild member with nick " + nick) // This will most likely get ignored by the caller
}
func (b *Bdiscord) getChannelID(name string) string {
idcheck := strings.Split(name, "ID:")
if len(idcheck) > 1 {
return idcheck[1]
}
for _, channel := range b.Channels {
if channel.Name == name {
return channel.ID
}
}
return ""
}
func (b *Bdiscord) getChannelName(id string) string {
for _, channel := range b.Channels {
if channel.ID == id {
return channel.Name
}
}
return ""
}
func (b *Bdiscord) replaceChannelMentions(text string) string {
var err error
re := regexp.MustCompile("<#[0-9]+>")
text = re.ReplaceAllStringFunc(text, func(m string) string {
channel := b.getChannelName(m[2 : len(m)-1])
// if at first don't succeed, try again
if channel == "" {
b.Channels, err = b.c.GuildChannels(b.guildID)
if err != nil {
return "#unknownchannel"
}
channel = b.getChannelName(m[2 : len(m)-1])
return "#" + channel
}
return "#" + channel
})
return text
}
func (b *Bdiscord) replaceUserMentions(text string) string {
re := regexp.MustCompile("@[^@]{1,32}")
text = re.ReplaceAllStringFunc(text, func(m string) string {
mention := strings.TrimSpace(m[1:])
var member *discordgo.Member
var err error
for {
b.Log.Debugf("Testing mention: '%s'", mention)
member, err = b.getGuildMemberByNick(mention)
if err != nil {
lastSpace := strings.LastIndex(mention, " ")
if lastSpace == -1 {
break
}
mention = strings.TrimSpace(mention[0:lastSpace])
} else {
break
}
}
if err != nil {
return m
}
return strings.Replace(m, "@"+mention, member.User.Mention(), -1)
})
b.Log.Debugf("Message with mention replaced: %s", text)
return text
}
func (b *Bdiscord) replaceAction(text string) (string, bool) {
if strings.HasPrefix(text, "_") && strings.HasSuffix(text, "_") {
return strings.Replace(text, "_", "", -1), true
}
return text, false
}
func (b *Bdiscord) stripCustomoji(text string) string {
// <:doge:302803592035958784>
re := regexp.MustCompile("<(:.*?:)[0-9]+>")
return re.ReplaceAllString(text, `$1`)
}
// splitURL splits a webhookURL and returns the id and token
func (b *Bdiscord) splitURL(url string) (string, string) {
webhookURLSplit := strings.Split(url, "/")
if len(webhookURLSplit) != 7 {
b.Log.Fatalf("%s is no correct discord WebhookURL", url)
}
return webhookURLSplit[len(webhookURLSplit)-2], webhookURLSplit[len(webhookURLSplit)-1]
}
// useWebhook returns true if we have a webhook defined somewhere
func (b *Bdiscord) useWebhook() bool {
if b.GetString("WebhookURL") != "" {
return true
}
b.channelsMutex.RLock()
defer b.channelsMutex.RUnlock()
for _, channel := range b.channelInfoMap {
if channel.Options.WebhookURL != "" {
return true
@@ -477,6 +268,10 @@ func (b *Bdiscord) isWebhookID(id string) bool {
return true
}
}
b.channelsMutex.RLock()
defer b.channelsMutex.RUnlock()
for _, channel := range b.channelInfoMap {
if channel.Options.WebhookURL != "" {
wID, _ := b.splitURL(channel.Options.WebhookURL)