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397 lines
12 KiB
Go
397 lines
12 KiB
Go
package btelegram
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import (
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"html"
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"regexp"
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"strconv"
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"strings"
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"unicode/utf16"
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"github.com/42wim/matterbridge/bridge/config"
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"github.com/42wim/matterbridge/bridge/helper"
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tgbotapi "github.com/go-telegram-bot-api/telegram-bot-api"
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)
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func (b *Btelegram) handleUpdate(rmsg *config.Message, message, posted, edited *tgbotapi.Message) *tgbotapi.Message {
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// handle channels
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if posted != nil {
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message = posted
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rmsg.Text = message.Text
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}
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// edited channel message
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if edited != nil && !b.GetBool("EditDisable") {
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message = edited
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rmsg.Text = rmsg.Text + message.Text + b.GetString("EditSuffix")
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}
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return message
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}
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// handleChannels checks if it's a channel message and if the message is a new or edited messages
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func (b *Btelegram) handleChannels(rmsg *config.Message, message *tgbotapi.Message, update tgbotapi.Update) *tgbotapi.Message {
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return b.handleUpdate(rmsg, message, update.ChannelPost, update.EditedChannelPost)
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}
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// handleGroups checks if it's a group message and if the message is a new or edited messages
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func (b *Btelegram) handleGroups(rmsg *config.Message, message *tgbotapi.Message, update tgbotapi.Update) *tgbotapi.Message {
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return b.handleUpdate(rmsg, message, update.Message, update.EditedMessage)
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}
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// handleForwarded handles forwarded messages
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func (b *Btelegram) handleForwarded(rmsg *config.Message, message *tgbotapi.Message) {
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if message.ForwardFrom != nil {
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usernameForward := ""
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if b.GetBool("UseFirstName") {
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usernameForward = message.ForwardFrom.FirstName
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}
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if usernameForward == "" {
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usernameForward = message.ForwardFrom.UserName
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if usernameForward == "" {
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usernameForward = message.ForwardFrom.FirstName
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}
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}
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if usernameForward == "" {
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usernameForward = unknownUser
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}
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rmsg.Text = "Forwarded from " + usernameForward + ": " + rmsg.Text
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}
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}
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// handleQuoting handles quoting of previous messages
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func (b *Btelegram) handleQuoting(rmsg *config.Message, message *tgbotapi.Message) {
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if message.ReplyToMessage != nil {
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usernameReply := ""
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if message.ReplyToMessage.From != nil {
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if b.GetBool("UseFirstName") {
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usernameReply = message.ReplyToMessage.From.FirstName
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}
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if usernameReply == "" {
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usernameReply = message.ReplyToMessage.From.UserName
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if usernameReply == "" {
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usernameReply = message.ReplyToMessage.From.FirstName
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}
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}
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}
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if usernameReply == "" {
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usernameReply = unknownUser
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}
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if !b.GetBool("QuoteDisable") {
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rmsg.Text = b.handleQuote(rmsg.Text, usernameReply, message.ReplyToMessage.Text)
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}
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}
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}
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// handleUsername handles the correct setting of the username
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func (b *Btelegram) handleUsername(rmsg *config.Message, message *tgbotapi.Message) {
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if message.From != nil {
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rmsg.UserID = strconv.Itoa(message.From.ID)
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if b.GetBool("UseFirstName") {
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rmsg.Username = message.From.FirstName
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}
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if rmsg.Username == "" {
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rmsg.Username = message.From.UserName
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if rmsg.Username == "" {
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rmsg.Username = message.From.FirstName
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}
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}
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// only download avatars if we have a place to upload them (configured mediaserver)
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if b.General.MediaServerUpload != "" {
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b.handleDownloadAvatar(message.From.ID, rmsg.Channel)
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}
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}
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// if we really didn't find a username, set it to unknown
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if rmsg.Username == "" {
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rmsg.Username = unknownUser
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}
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}
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func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
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for update := range updates {
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b.Log.Debugf("== Receiving event: %#v", update.Message)
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if update.Message == nil && update.ChannelPost == nil &&
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update.EditedMessage == nil && update.EditedChannelPost == nil {
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b.Log.Error("Getting nil messages, this shouldn't happen.")
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continue
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}
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var message *tgbotapi.Message
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rmsg := config.Message{Account: b.Account, Extra: make(map[string][]interface{})}
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// handle channels
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message = b.handleChannels(&rmsg, message, update)
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// handle groups
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message = b.handleGroups(&rmsg, message, update)
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if message == nil {
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b.Log.Error("message is nil, this shouldn't happen.")
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continue
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}
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// set the ID's from the channel or group message
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rmsg.ID = strconv.Itoa(message.MessageID)
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rmsg.Channel = strconv.FormatInt(message.Chat.ID, 10)
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// handle username
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b.handleUsername(&rmsg, message)
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// handle any downloads
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err := b.handleDownload(&rmsg, message)
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if err != nil {
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b.Log.Errorf("download failed: %s", err)
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}
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// handle forwarded messages
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b.handleForwarded(&rmsg, message)
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// quote the previous message
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b.handleQuoting(&rmsg, message)
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// handle entities (adding URLs)
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b.handleEntities(&rmsg, message)
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if rmsg.Text != "" || len(rmsg.Extra) > 0 {
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rmsg.Text = helper.RemoveEmptyNewLines(rmsg.Text)
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// channels don't have (always?) user information. see #410
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if message.From != nil {
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rmsg.Avatar = helper.GetAvatar(b.avatarMap, strconv.Itoa(message.From.ID), b.General)
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}
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b.Log.Debugf("<= Sending message from %s on %s to gateway", rmsg.Username, b.Account)
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b.Log.Debugf("<= Message is %#v", rmsg)
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b.Remote <- rmsg
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}
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}
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}
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// handleDownloadAvatar downloads the avatar of userid from channel
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// sends a EVENT_AVATAR_DOWNLOAD message to the gateway if successful.
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// logs an error message if it fails
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func (b *Btelegram) handleDownloadAvatar(userid int, channel string) {
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rmsg := config.Message{Username: "system",
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Text: "avatar",
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Channel: channel,
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Account: b.Account,
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UserID: strconv.Itoa(userid),
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Event: config.EventAvatarDownload,
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Extra: make(map[string][]interface{})}
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if _, ok := b.avatarMap[strconv.Itoa(userid)]; !ok {
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photos, err := b.c.GetUserProfilePhotos(tgbotapi.UserProfilePhotosConfig{UserID: userid, Limit: 1})
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if err != nil {
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b.Log.Errorf("Userprofile download failed for %#v %s", userid, err)
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}
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if len(photos.Photos) > 0 {
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photo := photos.Photos[0][0]
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url := b.getFileDirectURL(photo.FileID)
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name := strconv.Itoa(userid) + ".png"
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b.Log.Debugf("trying to download %#v fileid %#v with size %#v", name, photo.FileID, photo.FileSize)
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err := helper.HandleDownloadSize(b.Log, &rmsg, name, int64(photo.FileSize), b.General)
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if err != nil {
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b.Log.Error(err)
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return
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}
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data, err := helper.DownloadFile(url)
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if err != nil {
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b.Log.Errorf("download %s failed %#v", url, err)
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return
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}
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helper.HandleDownloadData(b.Log, &rmsg, name, rmsg.Text, "", data, b.General)
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b.Remote <- rmsg
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}
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}
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}
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// handleDownloadFile handles file download
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func (b *Btelegram) handleDownload(rmsg *config.Message, message *tgbotapi.Message) error {
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size := 0
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var url, name, text string
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switch {
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case message.Sticker != nil:
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text, name, url = b.getDownloadInfo(message.Sticker.FileID, ".webp", true)
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size = message.Sticker.FileSize
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case message.Voice != nil:
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text, name, url = b.getDownloadInfo(message.Voice.FileID, ".ogg", true)
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size = message.Voice.FileSize
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case message.Video != nil:
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text, name, url = b.getDownloadInfo(message.Video.FileID, "", true)
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size = message.Video.FileSize
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case message.Audio != nil:
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text, name, url = b.getDownloadInfo(message.Audio.FileID, "", true)
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size = message.Audio.FileSize
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case message.Document != nil:
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_, _, url = b.getDownloadInfo(message.Document.FileID, "", false)
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size = message.Document.FileSize
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name = message.Document.FileName
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text = " " + message.Document.FileName + " : " + url
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case message.Photo != nil:
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photos := *message.Photo
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size = photos[len(photos)-1].FileSize
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text, name, url = b.getDownloadInfo(photos[len(photos)-1].FileID, "", true)
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}
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// if name is empty we didn't match a thing to download
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if name == "" {
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return nil
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}
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// use the URL instead of native upload
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if b.GetBool("UseInsecureURL") {
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b.Log.Debugf("Setting message text to :%s", text)
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rmsg.Text += text
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return nil
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}
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// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
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err := helper.HandleDownloadSize(b.Log, rmsg, name, int64(size), b.General)
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if err != nil {
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return err
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}
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data, err := helper.DownloadFile(url)
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if err != nil {
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return err
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}
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if strings.HasSuffix(name, ".webp") && b.GetBool("MediaConvertWebPToPNG") {
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b.Log.Debugf("WebP to PNG conversion enabled, converting %s", name)
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err := helper.ConvertWebPToPNG(data)
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if err != nil {
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b.Log.Errorf("conversion failed: %s", err)
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} else {
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name = strings.Replace(name, ".webp", ".png", 1)
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}
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}
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helper.HandleDownloadData(b.Log, rmsg, name, message.Caption, "", data, b.General)
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return nil
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}
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func (b *Btelegram) getDownloadInfo(id string, suffix string, urlpart bool) (string, string, string) {
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url := b.getFileDirectURL(id)
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name := ""
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if urlpart {
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urlPart := strings.Split(url, "/")
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name = urlPart[len(urlPart)-1]
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}
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if suffix != "" && !strings.HasSuffix(name, suffix) {
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name += suffix
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}
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text := " " + url
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return text, name, url
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}
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// handleDelete handles message deleting
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func (b *Btelegram) handleDelete(msg *config.Message, chatid int64) (string, error) {
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if msg.ID == "" {
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return "", nil
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}
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msgid, err := strconv.Atoi(msg.ID)
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if err != nil {
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return "", err
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}
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_, err = b.c.DeleteMessage(tgbotapi.DeleteMessageConfig{ChatID: chatid, MessageID: msgid})
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return "", err
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}
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// handleEdit handles message editing.
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func (b *Btelegram) handleEdit(msg *config.Message, chatid int64) (string, error) {
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msgid, err := strconv.Atoi(msg.ID)
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if err != nil {
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return "", err
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}
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if strings.ToLower(b.GetString("MessageFormat")) == HTMLNick {
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b.Log.Debug("Using mode HTML - nick only")
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msg.Text = html.EscapeString(msg.Text)
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}
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m := tgbotapi.NewEditMessageText(chatid, msgid, msg.Username+msg.Text)
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switch b.GetString("MessageFormat") {
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case HTMLFormat:
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b.Log.Debug("Using mode HTML")
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m.ParseMode = tgbotapi.ModeHTML
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case "Markdown":
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b.Log.Debug("Using mode markdown")
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m.ParseMode = tgbotapi.ModeMarkdown
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}
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if strings.ToLower(b.GetString("MessageFormat")) == HTMLNick {
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b.Log.Debug("Using mode HTML - nick only")
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m.ParseMode = tgbotapi.ModeHTML
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}
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_, err = b.c.Send(m)
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if err != nil {
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return "", err
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}
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return "", nil
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}
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// handleUploadFile handles native upload of files
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func (b *Btelegram) handleUploadFile(msg *config.Message, chatid int64) string {
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var c tgbotapi.Chattable
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for _, f := range msg.Extra["file"] {
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fi := f.(config.FileInfo)
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file := tgbotapi.FileBytes{
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Name: fi.Name,
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Bytes: *fi.Data,
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}
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re := regexp.MustCompile(".(jpg|png)$")
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if re.MatchString(fi.Name) {
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c = tgbotapi.NewPhotoUpload(chatid, file)
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} else {
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c = tgbotapi.NewDocumentUpload(chatid, file)
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}
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_, err := b.c.Send(c)
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if err != nil {
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b.Log.Errorf("file upload failed: %#v", err)
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}
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if fi.Comment != "" {
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if _, err := b.sendMessage(chatid, msg.Username, fi.Comment); err != nil {
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b.Log.Errorf("posting file comment %s failed: %s", fi.Comment, err)
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}
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}
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}
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return ""
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}
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func (b *Btelegram) handleQuote(message, quoteNick, quoteMessage string) string {
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format := b.GetString("quoteformat")
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if format == "" {
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format = "{MESSAGE} (re @{QUOTENICK}: {QUOTEMESSAGE})"
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}
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quoteMessagelength := len(quoteMessage)
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if b.GetInt("QuoteLengthLimit") != 0 && quoteMessagelength >= b.GetInt("QuoteLengthLimit") {
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runes := []rune(quoteMessage)
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quoteMessage = string(runes[0:b.GetInt("QuoteLengthLimit")])
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if quoteMessagelength > b.GetInt("QuoteLengthLimit") {
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quoteMessage += "..."
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}
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}
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format = strings.Replace(format, "{MESSAGE}", message, -1)
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format = strings.Replace(format, "{QUOTENICK}", quoteNick, -1)
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format = strings.Replace(format, "{QUOTEMESSAGE}", quoteMessage, -1)
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return format
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}
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// handleEntities handles messageEntities
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func (b *Btelegram) handleEntities(rmsg *config.Message, message *tgbotapi.Message) {
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if message.Entities == nil {
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return
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}
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// for now only do URL replacements
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for _, e := range *message.Entities {
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if e.Type == "text_link" {
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url, err := e.ParseURL()
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if err != nil {
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b.Log.Errorf("entity text_link url parse failed: %s", err)
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continue
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}
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utfEncodedString := utf16.Encode([]rune(rmsg.Text))
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if e.Offset+e.Length > len(utfEncodedString) {
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b.Log.Errorf("entity length is too long %d > %d", e.Offset+e.Length, len(utfEncodedString))
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continue
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}
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link := utf16.Decode(utfEncodedString[e.Offset : e.Offset+e.Length])
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rmsg.Text = strings.Replace(rmsg.Text, string(link), url.String(), 1)
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}
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}
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}
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