package telegram
import (
"crypto/sha1"
"crypto/sha256"
"fmt"
"github.com/pkg/errors"
"io"
"os"
"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"
)
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"
// 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
}
func (c *Client) userStatusToText(status client.UserStatus, chatID int64) (string, string) {
var show, textStatus 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 = "unavailable", "Last seen last week"
case client.TypeUserStatusLastMonth:
show, textStatus = "unavailable", "Last seen last month"
case client.TypeUserStatusEmpty:
show, 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
}
// 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, args ...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 {
path := chat.Photo.Small.Local.Path
file, err := os.Open(path)
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)
}
}
cachedStatus, ok := c.cache.GetStatus(chatID)
if status == "" {
if ok {
show, status = cachedStatus.XMPP, cachedStatus.Description
} else if user != nil && user.Status != nil {
show, status = c.userStatusToText(user.Status, chatID)
} else {
show, status = "chat", chat.Title
}
}
c.cache.SetStatus(chatID, show, status)
return gateway.SendPresence(
c.xmpp,
c.jid,
gateway.SPFrom(strconv.FormatInt(chatID, 10)),
gateway.SPShow(show),
gateway.SPStatus(status),
gateway.SPPhoto(photo),
gateway.SPImmed(gateway.SPImmed.Get(args)),
)
}
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 {
username := user.Username
if username == "" {
username = strconv.FormatInt(user.Id, 10)
}
str = fmt.Sprintf("%s %s (%v)", user.FirstName, user.LastName, username)
} else {
str = strconv.FormatInt(chatID, 10)
}
str = spaceRegex.ReplaceAllString(str, " ")
return str
}
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
var 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
}
}
str.WriteString(fmt.Sprintf("%v | %s | ", message.Id, c.formatContact(senderId)))
if !preview {
str.WriteString(
time.Unix(int64(message.Date), 0).
In(c.Session.TimezoneToLocation()).
Format("02 Jan 2006 15:04:05 | "),
)
}
var text string
if message.Content != nil {
switch message.Content.MessageContentType() {
case client.TypeMessageText:
messageText, _ := message.Content.(*client.MessageText)
text = messageText.Text.Text
// TODO: handle other message types with labels (not supported in Zhabogram!)
}
}
if text != "" {
if !preview {
str.WriteString(text)
} else {
newlinePos := strings.Index(text, newlineChar)
if !preview || 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) formatContent(file *client.File, filename string) string {
if file == nil {
return ""
}
return fmt.Sprintf(
"%s (%v kbytes) | %s",
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 {
return fmt.Sprintf("%s/%x%s", basedir, sha256.Sum256([]byte(id)), ext)
}
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) string {
if message.Content == nil {
log.Warnf("Unknown message: %#v", message)
return "<empty message>"
}
markupFunction := formatter.EntityToXEP0393
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, false, 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)
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)
return formatter.Format(
photo.Caption.Text,
formatter.SortEntities(photo.Caption.Entities),
markupFunction,
)
case client.TypeMessageAudio:
audio, _ := message.Content.(*client.MessageAudio)
return formatter.Format(
audio.Caption.Text,
formatter.SortEntities(audio.Caption.Entities),
markupFunction,
)
case client.TypeMessageVideo:
video, _ := message.Content.(*client.MessageVideo)
return formatter.Format(
video.Caption.Text,
formatter.SortEntities(video.Caption.Entities),
markupFunction,
)
case client.TypeMessageDocument:
document, _ := message.Content.(*client.MessageDocument)
return formatter.Format(
document.Caption.Text,
formatter.SortEntities(document.Caption.Entities),
markupFunction,
)
case client.TypeMessageText:
text, _ := message.Content.(*client.MessageText)
return formatter.Format(
text.Text.Text,
formatter.SortEntities(text.Text.Entities),
markupFunction,
)
case client.TypeMessageVoiceNote:
voice, _ := message.Content.(*client.MessageVoiceNote)
return formatter.Format(
voice.Caption.Text,
formatter.SortEntities(voice.Caption.Entities),
markupFunction,
)
case client.TypeMessageVideoNote:
return ""
case client.TypeMessageAnimation:
animation, _ := message.Content.(*client.MessageAnimation)
return formatter.Format(
animation.Caption.Text,
formatter.SortEntities(animation.Caption.Entities),
markupFunction,
)
case client.TypeMessageContact:
contact, _ := message.Content.(*client.MessageContact)
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,
)
}
return fmt.Sprintf("unknown message (%s)", message.Content.MessageContentType())
}
func (c *Client) contentToFilename(content client.MessageContent) (*client.File, string) {
if content == nil {
return nil, ""
}
switch content.MessageContentType() {
case client.TypeMessageSticker:
sticker, _ := content.(*client.MessageSticker)
return sticker.Sticker.Sticker, "sticker.webp"
case client.TypeMessageVoiceNote:
voice, _ := content.(*client.MessageVoiceNote)
return voice.VoiceNote.Voice, fmt.Sprintf("voice note (%v s.).oga", voice.VoiceNote.Duration)
case client.TypeMessageVideoNote:
video, _ := content.(*client.MessageVideoNote)
return video.VideoNote.Video, fmt.Sprintf("video note (%v s.).mp4", video.VideoNote.Duration)
case client.TypeMessageAnimation:
animation, _ := content.(*client.MessageAnimation)
return animation.Animation.Animation, "animation.mp4"
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 nil, ""
case client.TypeMessageAudio:
audio, _ := content.(*client.MessageAudio)
return audio.Audio.Audio, filepath.Base(audio.Audio.Audio.Local.Path)
case client.TypeMessageVideo:
video, _ := content.(*client.MessageVideo)
return video.Video.Video, filepath.Base(video.Video.Video.Local.Path)
case client.TypeMessageDocument:
document, _ := content.(*client.MessageDocument)
return document.Document.Document, filepath.Base(document.Document.Document.Local.Path)
}
return nil, ""
}
func (c *Client) messageToPrefix(message *client.Message, fileString string) string {
prefix := []string{}
// message direction
var directionChar string
if message.IsOutgoing {
directionChar = "⇾ "
} else {
directionChar = "⇽ "
}
prefix = append(prefix, directionChar+strconv.FormatInt(message.Id, 10))
// show sender in group chats
if message.ChatId < 0 && message.SenderId != nil {
var senderId int64
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
}
prefix = append(prefix, c.formatContact(senderId))
}
// reply to
if message.ReplyToMessageId != 0 {
prefix = append(prefix, "reply: "+c.formatMessage(message.ChatId, message.ReplyToMessageId, true, nil))
}
if message.ForwardInfo != nil {
prefix = append(prefix, "fwd: "+c.formatForward(message.ForwardInfo))
}
// file
if fileString != "" {
prefix = append(prefix, "file: "+fileString)
}
return strings.Join(prefix, " | ")
}
// ProcessOutgoingMessage executes commands or sends messages to mapped chats
func (c *Client) ProcessOutgoingMessage(chatID int64, text string, returnJid string) client.InputMessageContent {
if !c.Online() {
// we're offline
return nil
}
if returnJid != "" && strings.HasPrefix(text, "/") {
// try to execute commands
response, isCommand := c.ProcessChatCommand(chatID, text)
if response != "" {
gateway.SendMessage(returnJid, strconv.FormatInt(chatID, 10), response, c.xmpp)
}
// do not send on success
if isCommand {
return nil
}
}
log.Warnf("Sending message to chat %v", chatID)
// quotations
var reply int64
replySlice := replyRegex.FindStringSubmatch(text)
if len(replySlice) > 1 {
reply, _ = strconv.ParseInt(replySlice[1], 10, 64)
}
// attach a file
var file *client.InputFileRemote
if chatID != 0 && c.content.Upload != "" && strings.HasPrefix(text, c.content.Upload) {
file = &client.InputFileRemote{
Id: text,
}
}
// remove first line from text
if file != nil || reply != 0 {
newlinePos := strings.Index(text, newlineChar)
if newlinePos != -1 {
text = text[newlinePos+1:]
}
}
formattedText := &client.FormattedText{
Text: text,
}
var message client.InputMessageContent
if file != nil {
// we can try to send a document
message = &client.InputMessageDocument{
Document: file,
Caption: formattedText,
}
} else {
// compile our message
message = &client.InputMessageText{
Text: formattedText,
}
}
if chatID != 0 {
_, err := c.client.SendMessage(&client.SendMessageRequest{
ChatId: chatID,
ReplyToMessageId: reply,
InputMessageContent: message,
})
if err != nil {
gateway.SendMessage(
returnJid,
strconv.FormatInt(chatID, 10),
fmt.Sprintf("Not sent: %s", err.Error()),
c.xmpp,
)
}
return nil
} else {
return message
}
}
// 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)
}
}
// resend statuses to (to another resource, for example)
func (c *Client) roster(resource string) {
if _, ok := c.resources[resource]; ok {
return // we know it
}
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.Messages, 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,
})
}
