Allow specifying maximum download size of media using MediaDownloadSize (slack,telegram,matrix)

bridge/config/config.go

@@ -182,6 +182,9 @@ func NewConfig(cfgfile string) *Config {
 	if fail {
 		log.Fatalf("Fix your config. Please see changelog for more information")
 	}
+	if cfg.General.MediaDownloadSize == 0 {
+		cfg.General.MediaDownloadSize = 1000000
+	}
 	return &cfg
 }
 

bridge/matrix/matrix.go

@@ -175,7 +175,7 @@ func (b *Bmatrix) handlematrix() error {
 				size := info["size"].(float64)
 				name := ev.Content["body"].(string)
 				flog.Debugf("trying to download %#v with size %#v", name, size)
-				if size <= 1000000 {
+				if size <= float64(b.General.MediaDownloadSize) {
 					data, err := helper.DownloadFile(url)
 					if err != nil {
 						flog.Errorf("download %s failed %#v", url, err)

bridge/slack/slack.go

@@ -288,7 +288,7 @@ func (b *Bslack) handleSlack() {
 		// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
 		if message.Raw.File != nil {
 			// limit to 1MB for now
-			if message.Raw.File.Size <= 1000000 {
+			if message.Raw.File.Size <= b.General.MediaDownloadSize {
 				comment := ""
 				data, err := b.downloadFile(message.Raw.File.URLPrivateDownload)
 				if err != nil {

bridge/telegram/telegram.go

@@ -299,7 +299,7 @@ func (b *Btelegram) handleDownload(file interface{}, msg *config.Message) {
 	// if we have a file attached, download it (in memory) and put a pointer to it in msg.Extra
 	// limit to 1MB for now
 	flog.Debugf("trying to download %#v fileid %#v with size %#v", name, fileid, size)
-	if size <= 1000000 {
+	if size <= b.General.MediaDownloadSize {
 		data, err := helper.DownloadFile(url)
 		if err != nil {
 			flog.Errorf("download %s failed %#v", url, err)

matterbridge.toml.sample

@@ -1044,6 +1044,15 @@ MediaServerUpload="https://user:pass@yourserver.com/upload"
 #OPTIONAL (default empty)
 MediaServerDownload="https://youserver.com/download"
 
+#MediaDownloadSize is the maximum size of attachments, videos, images
+#matterbridge will download and upload this file to bridges that also support uploading files.
+#eg downloading from slack to upload it to mattermost
+#
+#It will only download from bridges that don't have public links available, which are for the moment
+#slack, telegram and matrix
+#
+#Optional (default 1000000 (1 megabyte))
+MediaDownloadSize=1000000
 
 ###################################################################
 #Gateway configuration