telegabber/telegram/utils.go

1507 lines
39 KiB
Go

package telegram
import (
"crypto/sha1"
"encoding/binary"
"fmt"
"github.com/pkg/errors"
"hash/maphash"
"io"
"io/ioutil"
"net/http"
"os"
osUser "os/user"
"path/filepath"
"regexp"
"strconv"
"strings"
"time"
"dev.narayana.im/narayana/telegabber/telegram/cache"
"dev.narayana.im/narayana/telegabber/telegram/formatter"
"dev.narayana.im/narayana/telegabber/xmpp/gateway"
log "github.com/sirupsen/logrus"
"github.com/soheilhy/args"
"github.com/zelenin/go-tdlib/client"
)
type VCardInfo struct {
Fn string
Photo *client.File
Nicknames []string
Given string
Family string
Tel string
Info string
}
var errOffline = errors.New("TDlib instance is offline")
var spaceRegex = regexp.MustCompile(`\s+`)
var replyRegex = regexp.MustCompile("\\A>>? ?([0-9]+)\\n")
const newlineChar string = "\n"
const messageHeaderSeparator string = " | "
// GetContactByUsername resolves username to user id retrieves user and chat information
func (c *Client) GetContactByUsername(username string) (*client.Chat, *client.User, error) {
if !c.Online() {
return nil, nil, errOffline
}
var chat *client.Chat
var err error
var userID int64
if strings.HasPrefix(username, "@") {
chat, err = c.client.SearchPublicChat(&client.SearchPublicChatRequest{
Username: username,
})
if err != nil {
return nil, nil, err
}
userID = chat.Id
} else {
userID, err = strconv.ParseInt(username, 10, 64)
if err != nil {
return nil, nil, err
}
}
return c.GetContactByID(userID, chat)
}
// GetContactByID gets user and chat information from cache (or tries to retrieve it, if missing)
func (c *Client) GetContactByID(id int64, chat *client.Chat) (*client.Chat, *client.User, error) {
if !c.Online() || id == 0 {
return nil, nil, errOffline
}
var user *client.User
var cacheChat *client.Chat
var ok bool
var err error
user, ok = c.cache.GetUser(id)
if !ok && id > 0 {
user, err = c.client.GetUser(&client.GetUserRequest{
UserId: id,
})
if err == nil {
c.cache.SetUser(id, user)
}
}
cacheChat, ok = c.cache.GetChat(id)
if !ok {
if chat == nil {
cacheChat, err = c.client.GetChat(&client.GetChatRequest{
ChatId: id,
})
if err != nil {
// error is irrelevant if the user was found successfully
if user != nil {
return nil, user, nil
}
return nil, nil, err
}
c.cache.SetChat(id, cacheChat)
} else {
c.cache.SetChat(id, chat)
}
}
if chat == nil {
chat = cacheChat
}
return chat, user, nil
}
// IsPM checks if a chat is PM
func (c *Client) IsPM(id int64) (bool, error) {
if !c.Online() || id == 0 {
return false, errOffline
}
var err error
chat, ok := c.cache.GetChat(id)
if !ok {
chat, err = c.client.GetChat(&client.GetChatRequest{
ChatId: id,
})
if err != nil {
return false, err
}
c.cache.SetChat(id, chat)
}
chatType := chat.Type.ChatTypeType()
if chatType == client.TypeChatTypePrivate || chatType == client.TypeChatTypeSecret {
return true, nil
}
return false, nil
}
func (c *Client) userStatusToText(status client.UserStatus, chatID int64) (string, string, string) {
var show, textStatus, presenceType string
switch status.UserStatusType() {
case client.TypeUserStatusOnline:
onlineStatus, _ := status.(*client.UserStatusOnline)
c.DelayedStatusesLock.Lock()
c.DelayedStatuses[chatID] = &DelayedStatus{
TimestampOnline: time.Now().Unix(),
TimestampExpired: int64(onlineStatus.Expires),
}
c.DelayedStatusesLock.Unlock()
textStatus = "Online"
case client.TypeUserStatusRecently:
show, textStatus = "dnd", "Last seen recently"
c.DelayedStatusesLock.Lock()
delete(c.DelayedStatuses, chatID)
c.DelayedStatusesLock.Unlock()
case client.TypeUserStatusLastWeek:
show, textStatus = "xa", "Last seen last week"
case client.TypeUserStatusLastMonth:
show, textStatus = "xa", "Last seen last month"
case client.TypeUserStatusEmpty:
presenceType, textStatus = "unavailable", "Last seen a long time ago"
case client.TypeUserStatusOffline:
offlineStatus, _ := status.(*client.UserStatusOffline)
// this will stop working in 2038 O\
wasOnline := int64(offlineStatus.WasOnline)
elapsed := time.Now().Unix() - wasOnline
if elapsed < 3600 {
show = "away"
} else {
show = "xa"
}
textStatus = c.LastSeenStatus(wasOnline)
c.DelayedStatusesLock.Lock()
delete(c.DelayedStatuses, chatID)
c.DelayedStatusesLock.Unlock()
}
return show, textStatus, presenceType
}
// LastSeenStatus formats a timestamp to a "Last seen at" string
func (c *Client) LastSeenStatus(timestamp int64) string {
return time.Unix(int64(timestamp), 0).
In(c.Session.TimezoneToLocation()).
Format("Last seen at 15:04 02/01/2006")
}
// ProcessStatusUpdate sets contact status
func (c *Client) ProcessStatusUpdate(chatID int64, status string, show string, oldArgs ...args.V) error {
if !c.Online() {
return nil
}
log.WithFields(log.Fields{
"chat_id": chatID,
}).Info("Status update for")
chat, user, err := c.GetContactByID(chatID, nil)
if err != nil {
return err
}
var photo string
if chat != nil && chat.Photo != nil {
file, path, err := c.ForceOpenFile(chat.Photo.Small, 1)
if err == nil {
defer file.Close()
hash := sha1.New()
_, err = io.Copy(hash, file)
if err == nil {
photo = fmt.Sprintf("%x", hash.Sum(nil))
} else {
log.Errorf("Error calculating hash: %v", path)
}
} else if path != "" {
log.Errorf("Photo does not exist: %v", path)
}
}
var presenceType string
if gateway.SPType.IsSet(oldArgs) {
presenceType = gateway.SPType.Get(oldArgs)
}
cachedStatus, ok := c.cache.GetStatus(chatID)
if status == "" {
if ok {
var typ string
show, status, typ = cachedStatus.Destruct()
if presenceType == "" {
presenceType = typ
}
log.WithFields(log.Fields{
"show": show,
"status": status,
"presenceType": presenceType,
}).Debug("Cached status")
} else if user != nil && user.Status != nil {
show, status, presenceType = c.userStatusToText(user.Status, chatID)
log.WithFields(log.Fields{
"show": show,
"status": status,
"presenceType": presenceType,
}).Debug("Status to text")
} else {
show, status = "chat", chat.Title
}
}
cacheShow := show
if presenceType == "unavailable" {
cacheShow = presenceType
}
c.cache.SetStatus(chatID, cacheShow, status)
newArgs := []args.V{
gateway.SPFrom(strconv.FormatInt(chatID, 10)),
gateway.SPShow(show),
gateway.SPStatus(status),
gateway.SPPhoto(photo),
gateway.SPResource(gateway.Jid.Resource),
gateway.SPImmed(gateway.SPImmed.Get(oldArgs)),
}
if presenceType != "" {
newArgs = append(newArgs, gateway.SPType(presenceType))
}
return gateway.SendPresence(
c.xmpp,
c.jid,
newArgs...,
)
}
func (c *Client) formatContact(chatID int64) string {
if chatID == 0 {
return ""
}
chat, user, err := c.GetContactByID(chatID, nil)
if err != nil {
return "unknown contact: " + err.Error()
}
var str string
if chat != nil {
str = fmt.Sprintf("%s (%v)", chat.Title, chat.Id)
} else if user != nil {
var usernames string
if user.Usernames != nil {
usernames = c.usernamesToString(user.Usernames.ActiveUsernames)
}
if usernames == "" {
usernames = strconv.FormatInt(user.Id, 10)
}
str = fmt.Sprintf("%s %s (%v)", user.FirstName, user.LastName, usernames)
} else {
str = strconv.FormatInt(chatID, 10)
}
str = spaceRegex.ReplaceAllString(str, " ")
return str
}
func (c *Client) getSenderId(message *client.Message) (senderId int64) {
if message.SenderId != nil {
switch message.SenderId.MessageSenderType() {
case client.TypeMessageSenderUser:
senderUser, _ := message.SenderId.(*client.MessageSenderUser)
senderId = senderUser.UserId
case client.TypeMessageSenderChat:
senderChat, _ := message.SenderId.(*client.MessageSenderChat)
senderId = senderChat.ChatId
}
}
return
}
func (c *Client) formatSender(message *client.Message) string {
return c.formatContact(c.getSenderId(message))
}
func (c *Client) getMessageReply(message *client.Message) (reply *gateway.Reply, replyMsg *client.Message) {
if message.ReplyToMessageId != 0 {
var err error
replyMsg, err = c.client.GetMessage(&client.GetMessageRequest{
ChatId: message.ChatId,
MessageId: message.ReplyToMessageId,
})
if err != nil {
log.Errorf("<error fetching message: %s>", err.Error())
return
}
replyId, err := gateway.IdsDB.GetByTgIds(c.Session.Login, c.jid, message.ChatId, message.ReplyToMessageId)
if err != nil {
replyId = strconv.FormatInt(message.ReplyToMessageId, 10)
}
reply = &gateway.Reply{
Author: fmt.Sprintf("%v@%s", c.getSenderId(replyMsg), gateway.Jid.Full()),
Id: replyId,
}
}
return
}
func (c *Client) formatMessage(chatID int64, messageID int64, preview bool, message *client.Message) string {
var err error
if message == nil {
message, err = c.client.GetMessage(&client.GetMessageRequest{
ChatId: chatID,
MessageId: messageID,
})
if err != nil {
return fmt.Sprintf("<error fetching message: %s>", err.Error())
}
}
if message == nil {
return ""
}
var str strings.Builder
// add messageid and sender
str.WriteString(fmt.Sprintf("%v | %s | ", message.Id, c.formatSender(message)))
// add date
if !preview {
str.WriteString(
time.Unix(int64(message.Date), 0).
In(c.Session.TimezoneToLocation()).
Format("02 Jan 2006 15:04:05 | "),
)
}
// text message
var text string
if message.Content != nil {
text = c.messageToText(message, preview)
}
if text != "" {
if !preview {
str.WriteString(text)
} else {
newlinePos := strings.Index(text, newlineChar)
if newlinePos == -1 {
str.WriteString(text)
} else {
str.WriteString(text[0:newlinePos])
}
}
}
return str.String()
}
func (c *Client) formatForward(fwd *client.MessageForwardInfo) string {
switch fwd.Origin.MessageForwardOriginType() {
case client.TypeMessageForwardOriginUser:
originUser := fwd.Origin.(*client.MessageForwardOriginUser)
return c.formatContact(originUser.SenderUserId)
case client.TypeMessageForwardOriginChat:
originChat := fwd.Origin.(*client.MessageForwardOriginChat)
var signature string
if originChat.AuthorSignature != "" {
signature = fmt.Sprintf(" (%s)", originChat.AuthorSignature)
}
return c.formatContact(originChat.SenderChatId) + signature
case client.TypeMessageForwardOriginHiddenUser:
originUser := fwd.Origin.(*client.MessageForwardOriginHiddenUser)
return originUser.SenderName
case client.TypeMessageForwardOriginChannel:
channel := fwd.Origin.(*client.MessageForwardOriginChannel)
var signature string
if channel.AuthorSignature != "" {
signature = fmt.Sprintf(" (%s)", channel.AuthorSignature)
}
return c.formatContact(channel.ChatId) + signature
case client.TypeMessageForwardOriginMessageImport:
originImport := fwd.Origin.(*client.MessageForwardOriginMessageImport)
return originImport.SenderName
}
return "Unknown forward type"
}
func (c *Client) formatFile(file *client.File, compact bool) (string, string) {
if file == nil {
return "", ""
}
src, link := c.PermastoreFile(file, false)
if compact {
return link, link
} else {
return fmt.Sprintf("%s (%v kbytes) | %s", filepath.Base(src), file.Size/1024, link), link
}
}
// PermastoreFile steals a file out of TDlib control into an independent shared directory
func (c *Client) PermastoreFile(file *client.File, clone bool) (string, string) {
log.Debugf("file: %#v", file)
if file == nil || file.Local == nil || file.Remote == nil {
return "", ""
}
gateway.StorageLock.Lock()
defer gateway.StorageLock.Unlock()
var link string
var src string
if c.content.Path != "" && c.content.Link != "" {
src = file.Local.Path // source path
_, err := os.Stat(src)
if err != nil {
log.Errorf("Cannot access source file: %v", err)
return "", ""
}
size64 := uint64(file.Size)
c.prepareDiskSpace(size64)
basename := file.Remote.UniqueId + filepath.Ext(src)
dest := c.content.Path + "/" + basename // destination path
link = c.content.Link + "/" + basename // download link
if clone {
file, path, err := c.ForceOpenFile(file, 1)
if err == nil {
defer file.Close()
// mode
mode := os.FileMode(0644)
fi, err := os.Stat(path)
if err == nil {
mode = fi.Mode().Perm()
}
// create destination
tempFile, err := os.OpenFile(dest, os.O_CREATE|os.O_EXCL|os.O_WRONLY, mode)
if err != nil {
pathErr := err.(*os.PathError)
if pathErr.Err.Error() == "file exists" {
log.Warn(err.Error())
return src, link
} else {
log.Errorf("File creation error: %v", err)
return "<ERROR>", ""
}
}
defer tempFile.Close()
// copy
_, err = io.Copy(tempFile, file)
if err != nil {
log.Errorf("File copying error: %v", err)
return "<ERROR>", ""
}
} else if path != "" {
log.Errorf("Source file does not exist: %v", path)
return "<ERROR>", ""
} else {
log.Errorf("PHOTO: %#v", err.Error())
return "<ERROR>", ""
}
} else {
// 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)
}
}
// copy or move should have succeeded at this point
gateway.CachedStorageSize += size64
}
return src, link
}
func (c *Client) formatBantime(hours int64) int32 {
var until int32
if hours > 0 {
until = int32(time.Now().Unix() + hours*3600)
}
return until
}
func (c *Client) formatLocation(location *client.Location) string {
return fmt.Sprintf(
"coordinates: %v,%v | https://www.google.com/maps/search/%v,%v/",
location.Latitude,
location.Longitude,
location.Latitude,
location.Longitude,
)
}
func (c *Client) messageToText(message *client.Message, preview bool) string {
if message.Content == nil {
log.Warnf("Unknown message: %#v", message)
return "<empty message>"
}
markupFunction := c.getFormatter()
switch message.Content.MessageContentType() {
case client.TypeMessageSticker:
sticker, _ := message.Content.(*client.MessageSticker)
return sticker.Sticker.Emoji
case client.TypeMessageAnimatedEmoji:
animatedEmoji, _ := message.Content.(*client.MessageAnimatedEmoji)
return animatedEmoji.Emoji
case client.TypeMessageBasicGroupChatCreate, client.TypeMessageSupergroupChatCreate:
return "has created chat"
case client.TypeMessageChatJoinByLink:
return "joined chat via invite link"
case client.TypeMessageChatAddMembers:
addMembers, _ := message.Content.(*client.MessageChatAddMembers)
text := "invited "
if len(addMembers.MemberUserIds) > 0 {
text += c.formatContact(addMembers.MemberUserIds[0])
}
return text
case client.TypeMessageChatDeleteMember:
deleteMember, _ := message.Content.(*client.MessageChatDeleteMember)
return "kicked " + c.formatContact(deleteMember.UserId)
case client.TypeMessagePinMessage:
pinMessage, _ := message.Content.(*client.MessagePinMessage)
return "pinned message: " + c.formatMessage(message.ChatId, pinMessage.MessageId, preview, nil)
case client.TypeMessageChatChangeTitle:
changeTitle, _ := message.Content.(*client.MessageChatChangeTitle)
return "chat title set to: " + changeTitle.Title
case client.TypeMessageLocation:
location, _ := message.Content.(*client.MessageLocation)
return c.formatLocation(location.Location)
case client.TypeMessageVenue:
venue, _ := message.Content.(*client.MessageVenue)
if preview {
return venue.Venue.Title
} else {
return fmt.Sprintf(
"*%s*\n%s\n%s",
venue.Venue.Title,
venue.Venue.Address,
c.formatLocation(venue.Venue.Location),
)
}
case client.TypeMessagePhoto:
photo, _ := message.Content.(*client.MessagePhoto)
if preview {
return photo.Caption.Text
} else {
return formatter.Format(
photo.Caption.Text,
photo.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageAudio:
audio, _ := message.Content.(*client.MessageAudio)
if preview {
return audio.Caption.Text
} else {
return formatter.Format(
audio.Caption.Text,
audio.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageVideo:
video, _ := message.Content.(*client.MessageVideo)
if preview {
return video.Caption.Text
} else {
return formatter.Format(
video.Caption.Text,
video.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageDocument:
document, _ := message.Content.(*client.MessageDocument)
if preview {
return document.Caption.Text
} else {
return formatter.Format(
document.Caption.Text,
document.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageText:
text, _ := message.Content.(*client.MessageText)
if preview {
return text.Text.Text
} else {
return formatter.Format(
text.Text.Text,
text.Text.Entities,
markupFunction,
)
}
case client.TypeMessageVoiceNote:
voice, _ := message.Content.(*client.MessageVoiceNote)
if preview {
return voice.Caption.Text
} else {
return formatter.Format(
voice.Caption.Text,
voice.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageVideoNote:
return ""
case client.TypeMessageAnimation:
animation, _ := message.Content.(*client.MessageAnimation)
if preview {
return animation.Caption.Text
} else {
return formatter.Format(
animation.Caption.Text,
animation.Caption.Entities,
markupFunction,
)
}
case client.TypeMessageContact:
contact, _ := message.Content.(*client.MessageContact)
if preview {
return contact.Contact.FirstName + " " + contact.Contact.LastName
} else {
var jid string
if contact.Contact.UserId != 0 {
jid = fmt.Sprintf("%v@%s", contact.Contact.UserId, gateway.Jid.Bare())
}
return fmt.Sprintf(
"*%s %s*\n%s\n%s\n%s",
contact.Contact.FirstName,
contact.Contact.LastName,
contact.Contact.PhoneNumber,
contact.Contact.Vcard,
jid,
)
}
case client.TypeMessageDice:
dice, _ := message.Content.(*client.MessageDice)
return fmt.Sprintf("%s 1d6: [%v]", dice.Emoji, dice.Value)
case client.TypeMessagePoll:
poll, _ := message.Content.(*client.MessagePoll)
if preview {
return poll.Poll.Question
} else {
rows := []string{}
rows = append(rows, fmt.Sprintf("*%s*", poll.Poll.Question))
for _, option := range poll.Poll.Options {
var tick string
if option.IsChosen {
tick = "x"
} else {
tick = " "
}
rows = append(rows, fmt.Sprintf(
"[%s] %s | %v%% | %v vote",
tick,
option.Text,
option.VotePercentage,
option.VoterCount,
))
}
return strings.Join(rows, "\n")
}
case client.TypeMessageChatSetMessageAutoDeleteTime:
ttl, _ := message.Content.(*client.MessageChatSetMessageAutoDeleteTime)
name := c.formatContact(ttl.FromUserId)
if name == "" {
if ttl.MessageAutoDeleteTime == 0 {
return "The self-destruct timer was disabled"
} else {
return fmt.Sprintf("The self-destruct timer was set to %v seconds", ttl.MessageAutoDeleteTime)
}
} else {
if ttl.MessageAutoDeleteTime == 0 {
return fmt.Sprintf("%s disabled the self-destruct timer", name)
} else {
return fmt.Sprintf("%s set the self-destruct timer to %v seconds", name, ttl.MessageAutoDeleteTime)
}
}
}
return fmt.Sprintf("unknown message (%s)", message.Content.MessageContentType())
}
func (c *Client) contentToFile(content client.MessageContent) (*client.File, *client.File) {
if content == nil {
return nil, nil
}
switch content.MessageContentType() {
case client.TypeMessageSticker:
sticker, _ := content.(*client.MessageSticker)
file := sticker.Sticker.Sticker
if sticker.Sticker.Format.StickerFormatType() == client.TypeStickerFormatTgs && sticker.Sticker.Thumbnail != nil && sticker.Sticker.Thumbnail.File != nil {
file = sticker.Sticker.Thumbnail.File
}
return file, nil
case client.TypeMessageVoiceNote:
voice, _ := content.(*client.MessageVoiceNote)
return voice.VoiceNote.Voice, nil
case client.TypeMessageVideoNote:
video, _ := content.(*client.MessageVideoNote)
var preview *client.File
if video.VideoNote.Thumbnail != nil {
preview = video.VideoNote.Thumbnail.File
}
return video.VideoNote.Video, preview
case client.TypeMessageAnimation:
animation, _ := content.(*client.MessageAnimation)
var preview *client.File
if animation.Animation.Thumbnail != nil {
preview = animation.Animation.Thumbnail.File
}
return animation.Animation.Animation, preview
case client.TypeMessagePhoto:
photo, _ := content.(*client.MessagePhoto)
sizes := photo.Photo.Sizes
if len(sizes) >= 1 {
file := sizes[len(sizes)-1].Photo
return file, nil
}
return nil, nil
case client.TypeMessageAudio:
audio, _ := content.(*client.MessageAudio)
var preview *client.File
if audio.Audio.AlbumCoverThumbnail != nil {
preview = audio.Audio.AlbumCoverThumbnail.File
}
return audio.Audio.Audio, preview
case client.TypeMessageVideo:
video, _ := content.(*client.MessageVideo)
var preview *client.File
if video.Video.Thumbnail != nil {
preview = video.Video.Thumbnail.File
}
return video.Video.Video, preview
case client.TypeMessageDocument:
document, _ := content.(*client.MessageDocument)
var preview *client.File
if document.Document.Thumbnail != nil {
preview = document.Document.Thumbnail.File
}
return document.Document.Document, preview
}
return nil, nil
}
func (c *Client) countCharsInLines(lines *[]string) (count int) {
for _, line := range *lines {
count += len(line)
}
return
}
func (c *Client) messageToPrefix(message *client.Message, previewString string, fileString string, replyMsg *client.Message) (string, int, int) {
isPM, err := c.IsPM(message.ChatId)
if err != nil {
log.Errorf("Could not determine if chat is PM: %v", err)
}
isCarbonsEnabled := gateway.MessageOutgoingPermissionVersion > 0 && c.Session.Carbons
// with carbons, hide for all messages in PM and only for outgoing in group chats
hideSender := isCarbonsEnabled && (message.IsOutgoing || isPM)
var replyStart, replyEnd int
prefix := []string{}
// message direction
var directionChar string
if !hideSender {
if c.Session.AsciiArrows {
if message.IsOutgoing {
directionChar = "> "
} else {
directionChar = "< "
}
} else {
if message.IsOutgoing {
directionChar = "➡ "
} else {
directionChar = "⬅ "
}
}
}
if !isPM || !c.Session.HideIds {
prefix = append(prefix, directionChar+strconv.FormatInt(message.Id, 10))
}
// show sender in group chats
if !hideSender {
sender := c.formatSender(message)
if sender != "" {
prefix = append(prefix, sender)
}
}
// reply to
if message.ReplyToMessageId != 0 {
if len(prefix) > 0 {
replyStart = c.countCharsInLines(&prefix) + (len(prefix)-1)*len(messageHeaderSeparator)
}
replyLine := "reply: " + c.formatMessage(message.ChatId, message.ReplyToMessageId, true, replyMsg)
prefix = append(prefix, replyLine)
replyEnd = replyStart + len(replyLine)
if len(prefix) > 0 {
replyEnd += len(messageHeaderSeparator)
}
}
if message.ForwardInfo != nil {
prefix = append(prefix, "fwd: "+c.formatForward(message.ForwardInfo))
}
// preview
if previewString != "" {
prefix = append(prefix, "preview: "+previewString)
}
// file
if fileString != "" {
prefix = append(prefix, "file: "+fileString)
}
return strings.Join(prefix, messageHeaderSeparator), replyStart, replyEnd
}
func (c *Client) ensureDownloadFile(file *client.File) *client.File {
gateway.StorageLock.Lock()
defer gateway.StorageLock.Unlock()
if file != nil {
c.prepareDiskSpace(uint64(file.Size))
newFile, err := c.DownloadFile(file.Id, 1, true)
if err == nil {
return newFile
}
}
return file
}
// ProcessIncomingMessage transfers a message to XMPP side and marks it as read on Telegram side
func (c *Client) ProcessIncomingMessage(chatId int64, message *client.Message) {
isCarbon := gateway.MessageOutgoingPermissionVersion > 0 && c.Session.Carbons && message.IsOutgoing
jids := c.getCarbonFullJids(isCarbon, "")
var text, oob, auxText string
reply, replyMsg := c.getMessageReply(message)
content := message.Content
if content != nil && content.MessageContentType() == client.TypeMessageChatChangePhoto {
chat, err := c.client.GetChat(&client.GetChatRequest{
ChatId: chatId,
})
if err == nil {
c.cache.SetChat(chatId, chat)
go c.ProcessStatusUpdate(chatId, "", "", gateway.SPImmed(true))
text = "<Chat photo has changed>"
}
} else {
text = c.messageToText(message, false)
// OTR support (I do not know why would you need it, seriously)
if !(strings.HasPrefix(text, "?OTR") || (c.Session.RawMessages && !c.Session.OOBMode)) {
file, preview := c.contentToFile(content)
// download file and preview (if present)
file = c.ensureDownloadFile(file)
preview = c.ensureDownloadFile(preview)
previewName, _ := c.formatFile(preview, true)
fileName, link := c.formatFile(file, false)
oob = link
if c.Session.OOBMode && oob != "" {
typ := message.Content.MessageContentType()
if typ != client.TypeMessageSticker {
auxText = text
}
text = oob
} else if !c.Session.RawMessages {
var newText strings.Builder
prefix, replyStart, replyEnd := c.messageToPrefix(message, previewName, fileName, replyMsg)
newText.WriteString(prefix)
if reply != nil {
reply.Start = uint64(replyStart)
reply.End = uint64(replyEnd)
}
if text != "" {
// \n if it is groupchat and message is not empty
if prefix != "" {
if chatId < 0 {
newText.WriteString("\n")
} else if chatId > 0 {
newText.WriteString(" | ")
}
}
newText.WriteString(text)
}
text = newText.String()
}
}
}
// mark message as read
c.client.ViewMessages(&client.ViewMessagesRequest{
ChatId: chatId,
MessageIds: []int64{message.Id},
ForceRead: true,
})
// forward message to XMPP
sId := strconv.FormatInt(message.Id, 10)
sChatId := strconv.FormatInt(chatId, 10)
for _, jid := range jids {
gateway.SendMessageWithOOB(jid, sChatId, text, sId, c.xmpp, reply, oob, isCarbon)
if auxText != "" {
gateway.SendMessage(jid, sChatId, auxText, sId, c.xmpp, reply, isCarbon)
}
}
}
// PrepareMessageContent creates a simple text message
func (c *Client) PrepareOutgoingMessageContent(text string) client.InputMessageContent {
return c.prepareOutgoingMessageContent(text, nil)
}
// ProcessOutgoingMessage executes commands or sends messages to mapped chats, returns message id
func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid string, replyId int64, replaceId int64) int64 {
if !c.Online() {
// we're offline
return 0
}
if replaceId == 0 && (strings.HasPrefix(text, "/") || strings.HasPrefix(text, "!")) {
// try to execute commands
response, isCommand := c.ProcessChatCommand(chatID, text)
if response != "" {
c.returnMessage(returnJid, chatID, response)
}
// do not send on success
if isCommand {
return 0
}
}
log.Warnf("Sending message to chat %v", chatID)
// quotations
var reply int64
if replaceId == 0 && replyId == 0 {
replySlice := replyRegex.FindStringSubmatch(text)
if len(replySlice) > 1 {
reply, _ = strconv.ParseInt(replySlice[1], 10, 64)
}
} else {
reply = replyId
}
// attach a file
var file *client.InputFileLocal
if c.content.Upload != "" && strings.HasPrefix(text, c.content.Upload) {
response, err := http.Get(text)
if err != nil {
c.returnError(returnJid, chatID, "Failed to fetch the uploaded file", err)
}
if response != nil && response.Body != nil {
defer response.Body.Close()
if response.StatusCode != 200 {
c.returnMessage(returnJid, chatID, fmt.Sprintf("Received status code %v", response.StatusCode))
}
tempDir, err := ioutil.TempDir("", "telegabber-*")
if err != nil {
c.returnError(returnJid, chatID, "Failed to create a temporary directory", err)
}
tempFile, err := os.Create(filepath.Join(tempDir, filepath.Base(text)))
if err != nil {
c.returnError(returnJid, chatID, "Failed to create a temporary file", err)
}
_, err = io.Copy(tempFile, response.Body)
if err != nil {
c.returnError(returnJid, chatID, "Failed to write a temporary file", err)
}
file = &client.InputFileLocal{
Path: tempFile.Name(),
}
}
}
// remove first line from text
if file != nil || (reply != 0 && replyId == 0) {
newlinePos := strings.Index(text, newlineChar)
if newlinePos != -1 {
text = text[newlinePos+1:]
} else {
text = ""
}
}
content := c.prepareOutgoingMessageContent(text, file)
if replaceId != 0 {
tgMessage, err := c.client.EditMessageText(&client.EditMessageTextRequest{
ChatId: chatID,
MessageId: replaceId,
InputMessageContent: content,
})
if err != nil {
c.returnError(returnJid, chatID, "Not edited", err)
return 0
}
return tgMessage.Id
}
tgMessage, err := c.client.SendMessage(&client.SendMessageRequest{
ChatId: chatID,
ReplyToMessageId: reply,
InputMessageContent: content,
})
if err != nil {
c.returnError(returnJid, chatID, "Not sent", err)
return 0
}
return tgMessage.Id
}
func (c *Client) returnMessage(returnJid string, chatID int64, text string) {
gateway.SendTextMessage(returnJid, strconv.FormatInt(chatID, 10), text, c.xmpp)
}
func (c *Client) returnError(returnJid string, chatID int64, msg string, err error) {
c.returnMessage(returnJid, chatID, fmt.Sprintf("%s: %s", msg, err.Error()))
}
func (c *Client) prepareOutgoingMessageContent(text string, file *client.InputFileLocal) client.InputMessageContent {
formattedText := &client.FormattedText{
Text: text,
}
var content client.InputMessageContent
if file != nil {
// we can try to send a document
content = &client.InputMessageDocument{
Document: file,
Caption: formattedText,
}
} else {
// compile our message
content = &client.InputMessageText{
Text: formattedText,
}
}
return content
}
// StatusesRange proxies the following function from unexported cache
func (c *Client) StatusesRange() chan *cache.Status {
return c.cache.StatusesRange()
}
func (c *Client) addResource(resource string) {
if resource == "" {
return
}
c.locks.resourcesLock.Lock()
defer c.locks.resourcesLock.Unlock()
c.resources[resource] = true
}
func (c *Client) deleteResource(resource string) {
c.locks.resourcesLock.Lock()
defer c.locks.resourcesLock.Unlock()
if _, ok := c.resources[resource]; ok {
delete(c.resources, resource)
}
}
func (c *Client) resourcesRange() chan string {
c.locks.resourcesLock.Lock()
resourceChan := make(chan string, 1)
go func() {
defer func() {
c.locks.resourcesLock.Unlock()
close(resourceChan)
}()
for resource := range c.resources {
resourceChan <- resource
}
}()
return resourceChan
}
// resend statuses to (to another resource, for example)
func (c *Client) roster(resource string) {
c.locks.resourcesLock.Lock()
if _, ok := c.resources[resource]; ok {
c.locks.resourcesLock.Unlock()
return // we know it
}
c.locks.resourcesLock.Unlock()
log.Warnf("Sending roster for %v", resource)
for _, chat := range c.cache.ChatsKeys() {
c.ProcessStatusUpdate(chat, "", "")
}
gateway.SendPresence(c.xmpp, c.jid, gateway.SPStatus("Logged in as: "+c.Session.Login))
c.addResource(resource)
}
// get last messages from specified chat
func (c *Client) getLastMessages(id int64, query string, from int64, count int32) (*client.FoundChatMessages, error) {
return c.client.SearchChatMessages(&client.SearchChatMessagesRequest{
ChatId: id,
Query: query,
SenderId: &client.MessageSenderUser{UserId: from},
Filter: &client.SearchMessagesFilterEmpty{},
Limit: count,
})
}
// DownloadFile actually obtains a file by id given by TDlib
func (c *Client) DownloadFile(id int32, priority int32, synchronous bool) (*client.File, error) {
return c.client.DownloadFile(&client.DownloadFileRequest{
FileId: id,
Priority: priority,
Synchronous: synchronous,
})
}
// ForceOpenFile reliably obtains a file if possible
func (c *Client) ForceOpenFile(tgFile *client.File, priority int32) (*os.File, string, error) {
if tgFile == nil {
return nil, "", errors.New("File not found")
}
path := tgFile.Local.Path
file, err := os.Open(path)
if err == nil {
return file, path, nil
} else
// obtain the photo right now if still not downloaded
if !tgFile.Local.IsDownloadingCompleted {
tdFile, tdErr := c.DownloadFile(tgFile.Id, priority, true)
if tdErr == nil {
path = tdFile.Local.Path
file, err = os.Open(path)
return file, path, err
}
}
// give up
return nil, path, err
}
// GetChatDescription obtains bio or description according to the chat type
func (c *Client) GetChatDescription(chat *client.Chat) string {
chatType := chat.Type.ChatTypeType()
if chatType == client.TypeChatTypePrivate {
privateType, _ := chat.Type.(*client.ChatTypePrivate)
fullInfo, err := c.client.GetUserFullInfo(&client.GetUserFullInfoRequest{
UserId: privateType.UserId,
})
if err == nil {
if fullInfo.Bio != nil && fullInfo.Bio.Text != "" {
return formatter.Format(
fullInfo.Bio.Text,
fullInfo.Bio.Entities,
c.getFormatter(),
)
} else if fullInfo.BotInfo != nil {
if fullInfo.BotInfo.ShortDescription != "" {
return fullInfo.BotInfo.ShortDescription
} else {
return fullInfo.BotInfo.Description
}
}
} else {
log.Warnf("Coudln't retrieve private chat info: %v", err.Error())
}
} else if chatType == client.TypeChatTypeBasicGroup {
basicGroupType, _ := chat.Type.(*client.ChatTypeBasicGroup)
fullInfo, err := c.client.GetBasicGroupFullInfo(&client.GetBasicGroupFullInfoRequest{
BasicGroupId: basicGroupType.BasicGroupId,
})
if err == nil {
return fullInfo.Description
} else {
log.Warnf("Coudln't retrieve basic group info: %v", err.Error())
}
} else if chatType == client.TypeChatTypeSupergroup {
supergroupType, _ := chat.Type.(*client.ChatTypeSupergroup)
fullInfo, err := c.client.GetSupergroupFullInfo(&client.GetSupergroupFullInfoRequest{
SupergroupId: supergroupType.SupergroupId,
})
if err == nil {
return fullInfo.Description
} else {
log.Warnf("Coudln't retrieve supergroup info: %v", err.Error())
}
}
return ""
}
// subscribe to a Telegram ID
func (c *Client) subscribeToID(id int64, chat *client.Chat) {
var args []args.V
args = append(args, gateway.SPFrom(strconv.FormatInt(id, 10)))
args = append(args, gateway.SPType("subscribe"))
if chat == nil {
chat, _, _ = c.GetContactByID(id, nil)
}
if chat != nil {
args = append(args, gateway.SPNickname(chat.Title))
gateway.SetNickname(c.jid, strconv.FormatInt(id, 10), chat.Title, c.xmpp)
}
gateway.SendPresence(
c.xmpp,
c.jid,
args...,
)
}
func (c *Client) prepareDiskSpace(size uint64) {
if gateway.StorageQuota > 0 && c.content.Path != "" {
var loweredQuota uint64
if gateway.StorageQuota >= size {
loweredQuota = gateway.StorageQuota - size
}
if gateway.CachedStorageSize >= loweredQuota {
log.Warn("Storage is rapidly clogged")
gateway.CleanOldFiles(c.content.Path, loweredQuota)
}
}
}
func (c *Client) GetVcardInfo(toID int64) (VCardInfo, error) {
var info VCardInfo
chat, user, err := c.GetContactByID(toID, nil)
if err != nil {
return info, err
}
if chat != nil {
info.Fn = chat.Title
if chat.Photo != nil {
info.Photo = chat.Photo.Small
}
info.Info = c.GetChatDescription(chat)
}
if user != nil {
if user.Usernames != nil {
info.Nicknames = make([]string, len(user.Usernames.ActiveUsernames))
copy(info.Nicknames, user.Usernames.ActiveUsernames)
}
info.Given = user.FirstName
info.Family = user.LastName
info.Tel = user.PhoneNumber
}
return info, nil
}
func (c *Client) UpdateChatNicknames() {
for _, id := range c.cache.ChatsKeys() {
chat, ok := c.cache.GetChat(id)
if ok {
newArgs := []args.V{
gateway.SPFrom(strconv.FormatInt(id, 10)),
gateway.SPNickname(chat.Title),
}
cachedStatus, ok := c.cache.GetStatus(id)
if ok {
show, status, typ := cachedStatus.Destruct()
newArgs = append(newArgs, gateway.SPShow(show), gateway.SPStatus(status))
if typ != "" {
newArgs = append(newArgs, gateway.SPType(typ))
}
}
gateway.SendPresence(
c.xmpp,
c.jid,
newArgs...,
)
gateway.SetNickname(c.jid, strconv.FormatInt(id, 10), chat.Title, c.xmpp)
}
}
}
// AddToOutbox remembers the resource from which a message with given ID was sent
func (c *Client) AddToOutbox(xmppId, resource string) {
c.locks.outboxLock.Lock()
defer c.locks.outboxLock.Unlock()
c.outbox[xmppId] = resource
}
func (c *Client) popFromOutbox(xmppId string) string {
c.locks.outboxLock.Lock()
defer c.locks.outboxLock.Unlock()
resource, ok := c.outbox[xmppId]
if ok {
delete(c.outbox, xmppId)
} else {
log.Warnf("No %v xmppId in outbox", xmppId)
}
return resource
}
func (c *Client) getCarbonFullJids(isOutgoing bool, ignoredResource string) []string {
var jids []string
if isOutgoing {
for resource := range c.resourcesRange() {
if ignoredResource == "" || resource != ignoredResource {
jids = append(jids, c.jid+"/"+resource)
}
}
} else {
jids = []string{c.jid}
}
return jids
}
func (c *Client) calculateMessageHash(messageId int64, content client.MessageContent) uint64 {
var h maphash.Hash
h.SetSeed(c.msgHashSeed)
buf8 := make([]byte, 8)
binary.BigEndian.PutUint64(buf8, uint64(messageId))
h.Write(buf8)
if content != nil && content.MessageContentType() == client.TypeMessageText {
textContent, ok := content.(*client.MessageText)
if !ok {
uhOh()
}
if textContent.Text != nil {
h.WriteString(textContent.Text.Text)
for _, entity := range textContent.Text.Entities {
buf4 := make([]byte, 4)
binary.BigEndian.PutUint32(buf4, uint32(entity.Offset))
h.Write(buf4)
binary.BigEndian.PutUint32(buf4, uint32(entity.Length))
h.Write(buf4)
h.WriteString(entity.Type.TextEntityTypeType())
}
}
}
return h.Sum64()
}
func (c *Client) updateLastMessageHash(chatId, messageId int64, content client.MessageContent) {
c.locks.lastMsgHashesLock.Lock()
defer c.locks.lastMsgHashesLock.Unlock()
c.lastMsgHashes[chatId] = c.calculateMessageHash(messageId, content)
}
func (c *Client) hasLastMessageHashChanged(chatId, messageId int64, content client.MessageContent) bool {
c.locks.lastMsgHashesLock.Lock()
defer c.locks.lastMsgHashesLock.Unlock()
oldHash, ok := c.lastMsgHashes[chatId]
newHash := c.calculateMessageHash(messageId, content)
if !ok {
log.Warnf("Last message hash for chat %v does not exist", chatId)
}
log.WithFields(log.Fields{
"old hash": oldHash,
"new hash": newHash,
}).Info("Message hashes")
return !ok || oldHash != newHash
}
func (c *Client) getFormatter() func(*client.TextEntity) (*formatter.Insertion, *formatter.Insertion) {
return formatter.EntityToXEP0393
}
func (c *Client) usernamesToString(usernames []string) string {
var atUsernames []string
for _, username := range usernames {
atUsernames = append(atUsernames, "@"+username)
}
return strings.Join(atUsernames, ", ")
}