Move downloaded files to a permanent location

config.yml.example

@@ -4,6 +4,7 @@
         :path: '/var/www/telegabber/content' # webserver workdir
         :link: 'http://tlgrm.localhost/content' # webserver public address
         :upload: 'https:///xmppfiles.localhost' # xmpp http upload address
+        :user: 'www-data' # owner of content files
     :tdlib_verbosity: 1
     :tdlib:
         :datadir: './sessions/'

config/config.go

@@ -38,6 +38,7 @@ type TelegramContentConfig struct {
 	Path   string `yaml:":path"`
 	Link   string `yaml:":link"`
 	Upload string `yaml:":upload"`
+	User   string `yaml:":user"`
 }
 
 // TelegramTdlibConfig is for :tdlib: subtree

config_schema.json

@@ -21,6 +21,9 @@
             },
             ":upload": {
               "type": "string"
+            },
+            ":user": {
+              "type": "string"
             }
           }
         },

telegram/handlers.go

@@ -2,8 +2,6 @@ package telegram
 
 import (
 	"fmt"
-	"os"
-	"path/filepath"
 	"strconv"
 	"strings"
 	"sync"
@@ -107,13 +105,6 @@ func (c *Client) updateHandler() {
 					uhOh()
 				}
 				c.updateDeleteMessages(typedUpdate)
-			case client.TypeUpdateFile:
-				typedUpdate, ok := update.(*client.UpdateFile)
-				if !ok {
-					uhOh()
-				}
-				c.updateFile(typedUpdate)
-				log.Debugf("%#v", typedUpdate.File)
 			case client.TypeUpdateAuthorizationState:
 				typedUpdate, ok := update.(*client.UpdateAuthorizationState)
 				if !ok {
@@ -214,10 +205,10 @@ func (c *Client) updateNewMessage(update *client.UpdateNewMessage) {
 			}
 		} else {
 			text = c.messageToText(update.Message, false)
-			file, filename := c.contentToFilename(content)
+			file := c.contentToFile(content)
 
-			// download file(s)
+			// download file (if one)
-			if file != nil && !file.Local.IsDownloadingCompleted {
+			if file != nil {
 				newFile, err := c.DownloadFile(file.Id, 1, true)
 				if err == nil {
 					file = newFile
@@ -226,7 +217,7 @@ func (c *Client) updateNewMessage(update *client.UpdateNewMessage) {
 			// OTR support (I do not know why would you need it, seriously)
 			if !(strings.HasPrefix(text, "?OTR") || c.Session.RawMessages) {
 				var prefix strings.Builder
-				prefix.WriteString(c.messageToPrefix(update.Message, c.formatContent(file, filename)))
+				prefix.WriteString(c.messageToPrefix(update.Message, c.formatFile(file)))
 				if text != "" {
 					// \n if it is groupchat and message is not empty
 					if chatId < 0 {
@@ -275,27 +266,6 @@ func (c *Client) updateDeleteMessages(update *client.UpdateDeleteMessages) {
 	}
 }
 
-// file downloaded
-func (c *Client) updateFile(update *client.UpdateFile) {
-	// not really
-	if !update.File.Local.IsDownloadingCompleted {
-		return
-	}
-
-	err := os.Symlink(
-		update.File.Local.Path,
-		c.formatFilePath(c.content.Path, update.File.Remote.UniqueId, filepath.Ext(update.File.Local.Path)),
-	)
-	if err != nil {
-		linkErr := err.(*os.LinkError)
-		if linkErr.Err.Error() == "file exists" {
-			log.Warn(err.Error())
-		} else {
-			log.Errorf("Error creating symlink: %v", err)
-		}
-	}
-}
-
 func (c *Client) updateAuthorizationState(update *client.UpdateAuthorizationState) {
 	switch update.AuthorizationState.AuthorizationStateType() {
 	case client.TypeAuthorizationStateClosing:

telegram/utils.go

@@ -2,11 +2,11 @@ package telegram
 
 import (
 	"crypto/sha1"
-	"crypto/sha256"
 	"fmt"
 	"github.com/pkg/errors"
 	"io"
 	"os"
+	osUser "os/user"
 	"path/filepath"
 	"regexp"
 	"strconv"
@@ -355,21 +355,56 @@ func (c *Client) formatForward(fwd *client.MessageForwardInfo) string {
 	return "Unknown forward type"
 }
 
-func (c *Client) formatContent(file *client.File, filename string) string {
+func (c *Client) formatFile(file *client.File) string {
-	if file == nil {
+	if file == nil || file.Local == nil || file.Remote == nil {
 		return ""
 	}
 
-	return fmt.Sprintf(
+	var link string
-		"%s (%v kbytes) | %s",
+	var src string
-		filename,
-		file.Size/1024,
-		c.formatFilePath(c.content.Link, file.Remote.UniqueId, filepath.Ext(file.Local.Path)),
-	)
-}
 
-func (c *Client) formatFilePath(basedir string, id string, ext string) string {
+	if c.content.Path != "" && c.content.Link != "" {
-	return fmt.Sprintf("%s/%x%s", basedir, sha256.Sum256([]byte(id)), ext)
+		src = file.Local.Path // source path
+		_, err := os.Stat(src)
+		if err != nil {
+			return ""
+		}
+
+		basename := file.Remote.UniqueId + filepath.Ext(src)
+		dest := c.content.Path + "/" + basename // destination path
+		link = c.content.Link + "/" + basename // download link
+
+		// move
+		err = os.Rename(src, dest)
+		if err != nil {
+			linkErr := err.(*os.LinkError)
+			if linkErr.Err.Error() == "file exists" {
+				log.Warn(err.Error())
+			} else {
+				log.Errorf("File moving error: %v", err)
+				return "<ERROR>"
+			}
+		}
+		// chown
+		if c.content.User != "" {
+			user, err := osUser.Lookup(c.content.User)
+			if err == nil {
+				uid, err := strconv.ParseInt(user.Uid, 10, 0)
+				if err == nil {
+					err = os.Chown(dest, int(uid), -1)
+					if err != nil {
+						log.Errorf("Chown error: %v", err)
+					}
+				} else {
+					log.Errorf("Broken uid: %v", err)
+				}
+			} else {
+				log.Errorf("Wrong user name for chown: %v", err)
+			}
+		}
+	}
+
+	return fmt.Sprintf("%s (%v kbytes) | %s", filepath.Base(src), file.Size/1024, link)
 }
 
 func (c *Client) formatBantime(hours int64) int32 {
@@ -573,44 +608,44 @@ func (c *Client) messageToText(message *client.Message, preview bool) string {
 	return fmt.Sprintf("unknown message (%s)", message.Content.MessageContentType())
 }
 
-func (c *Client) contentToFilename(content client.MessageContent) (*client.File, string) {
+func (c *Client) contentToFile(content client.MessageContent) *client.File {
 	if content == nil {
-		return nil, ""
+		return nil
 	}
 
 	switch content.MessageContentType() {
 	case client.TypeMessageSticker:
 		sticker, _ := content.(*client.MessageSticker)
-		return sticker.Sticker.Sticker, "sticker.webp"
+		return sticker.Sticker.Sticker
 	case client.TypeMessageVoiceNote:
 		voice, _ := content.(*client.MessageVoiceNote)
-		return voice.VoiceNote.Voice, fmt.Sprintf("voice note (%v s.).oga", voice.VoiceNote.Duration)
+		return voice.VoiceNote.Voice
 	case client.TypeMessageVideoNote:
 		video, _ := content.(*client.MessageVideoNote)
-		return video.VideoNote.Video, fmt.Sprintf("video note (%v s.).mp4", video.VideoNote.Duration)
+		return video.VideoNote.Video
 	case client.TypeMessageAnimation:
 		animation, _ := content.(*client.MessageAnimation)
-		return animation.Animation.Animation, "animation.mp4"
+		return animation.Animation.Animation
 	case client.TypeMessagePhoto:
 		photo, _ := content.(*client.MessagePhoto)
 		sizes := photo.Photo.Sizes
 		if len(sizes) >= 1 {
 			file := sizes[len(sizes)-1].Photo
-			return file, strconv.FormatInt(int64(file.Id), 10) + ".jpg"
+			return file
 		}
-		return nil, ""
+		return nil
 	case client.TypeMessageAudio:
 		audio, _ := content.(*client.MessageAudio)
-		return audio.Audio.Audio, filepath.Base(audio.Audio.Audio.Local.Path)
+		return audio.Audio.Audio
 	case client.TypeMessageVideo:
 		video, _ := content.(*client.MessageVideo)
-		return video.Video.Video, filepath.Base(video.Video.Video.Local.Path)
+		return video.Video.Video
 	case client.TypeMessageDocument:
 		document, _ := content.(*client.MessageDocument)
-		return document.Document.Document, filepath.Base(document.Document.Document.Local.Path)
+		return document.Document.Document
 	}
 
-	return nil, ""
+	return nil
 }
 
 func (c *Client) messageToPrefix(message *client.Message, fileString string) string {

telegram/utils_test.go

@@ -146,8 +146,8 @@ func TestFormatContent(t *testing.T) {
 		},
 	}
 
-	content := c.formatContent(&file, "a.jpg")
+	content := c.formatFile(&file)
-	if content != "a.jpg (23 kbytes) | localhvost/b0896d9e9f1de7d2af59b080c3f0947b838c5c6c64f71c68a4b690a15de2ccf8.jpg" {
+	if content != ". (23 kbytes) | " {
 		t.Errorf("Wrong file label: %v", content)
 	}
 }
@@ -351,142 +351,6 @@ func TestMessageUnknown(t *testing.T) {
 	}
 }
 
-func TestContentToFilenameSticker(t *testing.T) {
-	sticker := client.MessageSticker{
-		Sticker: &client.Sticker{},
-	}
-	_, filename := (&Client{}).contentToFilename(&sticker)
-	if filename != "sticker.webp" {
-		t.Errorf("Wrong sticker filename")
-	}
-}
-
-func TestContentToFilenameVoice(t *testing.T) {
-	voice := client.MessageVoiceNote{
-		VoiceNote: &client.VoiceNote{
-			Duration: 56,
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&voice)
-	if filename != "voice note (56 s.).oga" {
-		t.Errorf("Wrong voice note filename")
-	}
-}
-
-func TestContentToFilenameVideoNote(t *testing.T) {
-	video := client.MessageVideoNote{
-		VideoNote: &client.VideoNote{
-			Duration: 56,
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&video)
-	if filename != "video note (56 s.).mp4" {
-		t.Errorf("Wrong video note filename")
-	}
-}
-
-func TestContentToFilenameAnimation(t *testing.T) {
-	animation := client.MessageAnimation{
-		Animation: &client.Animation{},
-	}
-	_, filename := (&Client{}).contentToFilename(&animation)
-	if filename != "animation.mp4" {
-		t.Errorf("Wrong animation filename")
-	}
-}
-
-func TestContentToFilenamePhoto(t *testing.T) {
-	photo := client.MessagePhoto{
-		Photo: &client.Photo{
-			Sizes: []*client.PhotoSize{
-				&client.PhotoSize{
-					Photo: &client.File{},
-				},
-				&client.PhotoSize{
-					Photo: &client.File{
-						Id: 56,
-					},
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&photo)
-	if filename != "56.jpg" {
-		t.Errorf("Wrong photo filename")
-	}
-}
-
-func TestContentToFilenamePhotoNoSizes(t *testing.T) {
-	photo := client.MessagePhoto{
-		Photo: &client.Photo{
-			Sizes: []*client.PhotoSize{},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&photo)
-	if filename != "" {
-		t.Errorf("Wrong filename of sizeless photo")
-	}
-}
-
-func TestContentToFilenameAudio(t *testing.T) {
-	audio := client.MessageAudio{
-		Audio: &client.Audio{
-			FileName: "swine.mp3",
-			Audio: &client.File{
-				Local: &client.LocalFile{
-					Path: "C:/WINNT/swine.mp3",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&audio)
-	if filename != "swine.mp3" {
-		t.Errorf("Not oinking, shame on you!")
-	}
-}
-
-func TestContentToFilenameVideo(t *testing.T) {
-	video := client.MessageVideo{
-		Video: &client.Video{
-			FileName: "swine.3gp",
-			Video: &client.File{
-				Local: &client.LocalFile{
-					Path: "C:/Document and Settings/Svinarchuk-PC/swine.3gp",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&video)
-	if filename != "swine.3gp" {
-		t.Errorf("Not pigdancing, shame on you!")
-	}
-}
-
-func TestContentToFilenameDocument(t *testing.T) {
-	document := client.MessageDocument{
-		Document: &client.Document{
-			FileName: "swine.doc",
-			Document: &client.File{
-				Local: &client.LocalFile{
-					Path: "D:/My Documents/swine.doc",
-				},
-			},
-		},
-	}
-	_, filename := (&Client{}).contentToFilename(&document)
-	if filename != "swine.doc" {
-		t.Errorf("Not hoofstomping, shame on you!")
-	}
-}
-
-func TestContentToFilenameUnknown(t *testing.T) {
-	unknown := client.MessageExpiredPhoto{}
-	_, filename := (&Client{}).contentToFilename(&unknown)
-	if filename != "" {
-		t.Errorf("Wrong filename of unknown content")
-	}
-}
-
 func TestMessageToPrefix1(t *testing.T) {
 	message := client.Message{
 		Id:         42,