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Download files from telegram and reupload to supported bridges (telegram). #278
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parent
7dbebd3ea7
commit
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@ -1,9 +1,11 @@
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package btelegram
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import (
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"regexp"
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"strconv"
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"github.com/42wim/matterbridge/bridge/config"
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"github.com/42wim/matterbridge/bridge/helper"
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log "github.com/Sirupsen/logrus"
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"github.com/go-telegram-bot-api/telegram-bot-api"
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)
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@ -94,6 +96,27 @@ func (b *Btelegram) Send(msg config.Message) (string, error) {
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return "", nil
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}
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if msg.Extra != nil {
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// check if we have files to upload (from slack, telegram or mattermost)
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if len(msg.Extra["file"]) > 0 {
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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{fi.Name, *fi.Data}
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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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log.Errorf("file upload failed: %#v")
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}
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}
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}
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}
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m := tgbotapi.NewMessage(chatid, msg.Username+msg.Text)
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if b.Config.MessageFormat == "HTML" {
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m.ParseMode = tgbotapi.ModeHTML
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@ -113,6 +136,9 @@ func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
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username := ""
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channel := ""
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text := ""
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fmsg := config.Message{Extra: make(map[string][]interface{})}
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// handle channels
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if update.ChannelPost != nil {
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message = update.ChannelPost
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@ -146,18 +172,17 @@ func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
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if username == "" {
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username = "unknown"
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}
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if message.Sticker != nil && b.Config.UseInsecureURL {
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text = text + " " + b.getFileDirectURL(message.Sticker.FileID)
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if message.Sticker != nil {
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b.handleDownload(message.Sticker, &fmsg)
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}
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if message.Video != nil && b.Config.UseInsecureURL {
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text = text + " " + b.getFileDirectURL(message.Video.FileID)
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if message.Video != nil {
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b.handleDownload(message.Video, &fmsg)
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}
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if message.Photo != nil && b.Config.UseInsecureURL {
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photos := *message.Photo
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// last photo is the biggest
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text = text + " " + b.getFileDirectURL(photos[len(photos)-1].FileID)
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b.handleDownload(message.Photo, &fmsg)
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}
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if message.Document != nil && b.Config.UseInsecureURL {
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b.handleDownload(message.Sticker, &fmsg)
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text = text + " " + message.Document.FileName + " : " + b.getFileDirectURL(message.Document.FileID)
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}
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@ -181,7 +206,7 @@ func (b *Btelegram) handleRecv(updates <-chan tgbotapi.Update) {
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text = text + " (re @" + usernameReply + ":" + message.ReplyToMessage.Text + ")"
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}
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if text != "" {
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if text != "" || len(fmsg.Extra) > 0 {
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flog.Debugf("Sending message from %s on %s to gateway", username, b.Account)
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msg := config.Message{Username: username, Text: text, Channel: channel, Account: b.Account, UserID: strconv.Itoa(message.From.ID), ID: strconv.Itoa(message.MessageID)}
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flog.Debugf("Message is %#v", msg)
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@ -197,3 +222,47 @@ func (b *Btelegram) getFileDirectURL(id string) string {
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}
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return res
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}
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func (b *Btelegram) handleDownload(file interface{}, msg *config.Message) {
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size := 0
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url := ""
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name := ""
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text := ""
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switch v := file.(type) {
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case *tgbotapi.Sticker:
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size = v.FileSize
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url = b.getFileDirectURL(v.FileID)
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name = "sticker"
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text = " " + url
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case *tgbotapi.Video:
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size = v.FileSize
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url = b.getFileDirectURL(v.FileID)
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name = "video"
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text = " " + url
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case *[]tgbotapi.PhotoSize:
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photos := *v
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size = photos[len(photos)-1].FileSize
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url = b.getFileDirectURL(photos[len(photos)-1].FileID)
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name = "photo"
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text = " " + url
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case *tgbotapi.Document:
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size = v.FileSize
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url = b.getFileDirectURL(v.FileID)
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name = v.FileName
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text = " " + v.FileName + " : " + url
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}
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if b.Config.UseInsecureURL {
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msg.Text = text
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return
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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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// limit to 1MB for now
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if size <= 1000000 {
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data, err := helper.DownloadFile(url)
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if err != nil {
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flog.Errorf("download %s failed %#v", url, err)
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} else {
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msg.Extra["file"] = append(msg.Extra["file"], config.FileInfo{Name: name, Data: data})
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}
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}
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}
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