package telegram
import (
"fmt"
"github.com/pkg/errors"
"strconv"
"strings"
"time"
"unicode"
"dev.narayana.im/narayana/telegabber/xmpp/gateway"
log "github.com/sirupsen/logrus"
"github.com/godcong/go-tdlib/client"
)
const notEnoughArguments string = "Not enough arguments"
const telegramNotInitialized string = "Telegram connection is not initialized yet"
const notOnline string = "Not online"
var transportCommands = map[string]command{
"login": command{"phone", "sign in"},
"logout": command{"", "sign out"},
"code": command{"", "check one-time code"},
"password": command{"", "check 2fa password"},
"setusername": command{"", "update @username"},
"setname": command{"first last", "update name"},
"setbio": command{"", "update about"},
"setpassword": command{"[old] [new]", "set or remove password"},
"config": command{"[param] [value]", "view or update configuration options"},
}
var chatCommands = map[string]command{
"d": command{"[n]", "delete your last message(s)"},
"s": command{"regex replace", "edit your last message"},
"add": command{"@username", "add @username to your chat list"},
"join": command{"https://t.me/invite_link", "join to chat via invite link"},
"group": command{"title", "create groupchat «title» with current user"},
"supergroup": command{"title description", "create new supergroup «title» with «description»"},
"channel": command{"title description", "create new channel «title» with «description»"},
"secret": command{"", "create secretchat with current user"},
"search": command{"string [limit]", "search <string> in current chat"},
"history": command{"[limit]", "get last [limit] messages from current chat"},
"block": command{"", "blacklist current user"},
"unblock": command{"", "unblacklist current user"},
"invite": command{"id or @username", "add user to current chat"},
"kick": command{"id or @username", "remove user to current chat"},
"ban": command{"id or @username [hours]", "restrict @username from current chat for [hours] or forever"},
"leave": command{"", "leave current chat"},
"close": command{"", "close current secret chat"},
"delete": command{"", "delete current chat from chat list"},
"members": command{"[query]", "search members [by optional query] in current chat (requires admin rights)"},
}
var transportConfigurationOptions = map[string]configurationOption{
"timezone": configurationOption{"<timezone>", "adjust timezone for Telegram user statuses (example: +02:00)"},
"keeponline": configurationOption{"<bool>", "always keep telegram session online and rely on jabber offline messages (example: true)"},
}
type command struct {
arguments string
description string
}
type configurationOption command
type helpType int
const (
helpTypeTransport helpType = iota
helpTypeChat
)
func helpString(ht helpType) string {
var str strings.Builder
var commandMap map[string]command
switch ht {
case helpTypeTransport:
commandMap = transportCommands
case helpTypeChat:
commandMap = chatCommands
}
str.WriteString("Available commands:\n")
for name, command := range commandMap {
str.WriteString("/")
str.WriteString(name)
if command.arguments != "" {
str.WriteString(" ")
str.WriteString(command.arguments)
}
str.WriteString(" — ")
str.WriteString(command.description)
str.WriteString("\n")
}
if ht == helpTypeTransport {
str.WriteString("Configuration options\n")
for name, option := range transportConfigurationOptions {
str.WriteString(name)
str.WriteString(" ")
str.WriteString(option.arguments)
str.WriteString(" — ")
str.WriteString(option.description)
str.WriteString("\n")
}
}
return str.String()
}
func parseCommand(cmdline string) (string, []string) {
bodyFields := strings.Fields(cmdline)
return bodyFields[0][1:], bodyFields[1:]
}
func rawCmdArguments(cmdline string, start uint8) (string) {
var state uint
// /cmd ababa galamaga
// 01 2 3 45
startState := uint(3 + 2 * start)
for i, r := range cmdline {
isOdd := state % 2 == 1
isSpace := unicode.IsSpace(r)
if (!isOdd && !isSpace) || (isOdd && isSpace) {
state += 1
}
if state == startState {
return cmdline[i:]
}
}
return ""
}
func (c *Client) unsubscribe(chatID int64) {
gateway.SendPresence(
c.xmpp,
c.jid,
gateway.SPFrom(strconv.FormatInt(chatID, 10)),
gateway.SPType("unsubscribed"),
)
}
func (c *Client) sendMessagesReverse(chatID int64, messages []*client.Message) {
for i := len(messages) - 1; i >= 0; i-- {
gateway.SendMessage(
c.jid,
strconv.FormatInt(chatID, 10),
c.formatMessage(0, 0, false, messages[i]),
c.xmpp,
)
}
}
func (c *Client) usernameOrIDToID(username string) (int64, error) {
userID, err := strconv.ParseInt(username, 10, 64)
// couldn't parse the id, try to lookup as a username
if err != nil {
chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
Username: username,
})
if err != nil {
return 0, err
}
userID = chat.ID
if userID <= 0 {
return 0, errors.New("Not a user")
}
}
return userID, nil
}
// ProcessTransportCommand executes a command sent directly to the component
// and returns a response
func (c *Client) ProcessTransportCommand(cmdline string, resource string) string {
cmd, args := parseCommand(cmdline)
switch cmd {
case "login", "code", "password":
if cmd == "login" && c.Session.Login != "" {
return ""
}
if len(args) < 1 {
return notEnoughArguments
}
if cmd == "login" {
wasSessionLoginEmpty := c.Session.Login == ""
c.Session.Login = args[0]
if wasSessionLoginEmpty && c.authorizer == nil {
go func() {
err := c.Connect(resource)
if err != nil {
log.Error(errors.Wrap(err, "TDlib connection failure"))
}
}()
// a quirk for authorizer to become ready. If it's still not,
// nothing bad: the command just needs to be resent again
time.Sleep(1e5)
}
}
if c.authorizer == nil {
return telegramNotInitialized
}
switch cmd {
// sign in
case "login":
c.authorizer.PhoneNumber <- args[0]
// check auth code
case "code":
c.authorizer.Code <- args[0]
// check auth password
case "password":
c.authorizer.Password <- args[0]
}
// sign out
case "logout":
if !c.Online() {
return notOnline
}
for _, id := range c.cache.ChatsKeys() {
c.unsubscribe(id)
}
_, err := c.client.LogOut()
if err != nil {
c.forceClose()
return errors.Wrap(err, "Logout error").Error()
}
c.Session.Login = ""
// set @username
case "setusername":
if !c.Online() {
return notOnline
}
var username string
if len(args) > 0 {
username = args[0]
}
_, err := c.client.SetUsername(&client.SetUsernameRequest{
Username: username,
})
if err != nil {
return errors.Wrap(err, "Couldn't set username").Error()
}
// set My Name
case "setname":
if !c.Online() {
return notOnline
}
var firstname string
var lastname string
if len(args) > 0 {
firstname = args[0]
}
if len(args) > 1 {
lastname = args[1]
}
_, err := c.client.SetName(&client.SetNameRequest{
FirstName: firstname,
LastName: lastname,
})
if err != nil {
return errors.Wrap(err, "Couldn't set name").Error()
}
// set About
case "setbio":
if !c.Online() {
return notOnline
}
_, err := c.client.SetBio(&client.SetBioRequest{
Bio: rawCmdArguments(cmdline, 0),
})
if err != nil {
return errors.Wrap(err, "Couldn't set bio").Error()
}
// set password
case "setpassword":
if !c.Online() {
return notOnline
}
var oldPassword string
var newPassword string
// 0 or 1 argument is ignored and the password is reset
if len(args) > 1 {
oldPassword = args[0]
newPassword = args[1]
}
_, err := c.client.SetPassword(&client.SetPasswordRequest{
OldPassword: oldPassword,
NewPassword: newPassword,
})
if err != nil {
return errors.Wrap(err, "Couldn't set password").Error()
}
case "config":
if len(args) > 1 {
value, err := c.Session.Set(args[0], args[1])
if err != nil {
return err.Error()
}
gateway.DirtySessions = true
return fmt.Sprintf("%s set to %s", args[0], value)
} else if len(args) > 0 {
value, err := c.Session.Get(args[0])
if err != nil {
return err.Error()
}
return fmt.Sprintf("%s is set to %s", args[0], value)
}
var entries []string
for key, value := range c.Session.ToMap() {
entries = append(entries, fmt.Sprintf("%s is set to %s", key, value))
}
return strings.Join(entries, "\n")
case "help":
return helpString(helpTypeTransport)
}
return ""
}
// ProcessChatCommand executes a command sent in a mapped chat
// and returns a response and the status of command support
func (c *Client) ProcessChatCommand(chatID int64, cmdline string) (string, bool) {
if !c.Online() {
return notOnline, true
}
cmd, args := parseCommand(cmdline)
switch cmd {
// delete message
case "d":
if c.me == nil {
return "@me is not initialized", true
}
var limit int32
if len(args) > 0 {
limit64, err := strconv.ParseInt(args[0], 10, 32)
if err != nil {
return err.Error(), true
}
limit = int32(limit64)
} else {
limit = 1
}
messages, err := c.getLastMessages(chatID, "", c.me.ID, limit)
if err != nil {
return err.Error(), true
}
log.Debugf("pre-deletion query: %#v %#v", messages, messages.Messages)
var messageIds []int64
for _, message := range messages.Messages {
if message != nil {
messageIds = append(messageIds, message.ID)
}
}
_, err = c.client.DeleteMessages(&client.DeleteMessagesRequest{
ChatID: chatID,
MessageIDs: messageIds,
Revoke: true,
})
if err != nil {
return err.Error(), true
}
// edit message
case "s":
if c.me == nil {
return "@me is not initialized", true
}
if len(args) < 1 {
return "Not enough arguments", true
}
messages, err := c.getLastMessages(chatID, "", c.me.ID, 1)
if err != nil {
return err.Error(), true
}
if len(messages.Messages) == 0 {
return "No last message", true
}
message := messages.Messages[0]
if message == nil {
return "Last message is empty", true
}
content := c.ProcessOutgoingMessage(0, rawCmdArguments(cmdline, 0), "")
if content != nil {
c.client.EditMessageText(&client.EditMessageTextRequest{
ChatID: chatID,
MessageID: message.ID,
InputMessageContent: content,
})
} else {
return "Message processing error", true
}
// add @contact
case "add":
if len(args) < 1 {
return notEnoughArguments, true
}
chat, err := c.client.SearchPublicChat(&client.SearchPublicChatRequest{
Username: args[0],
})
if err != nil {
return err.Error(), true
}
if chat == nil {
return "No error, but chat is nil", true
}
gateway.SendPresence(
c.xmpp,
c.jid,
gateway.SPFrom(strconv.FormatInt(chat.ID, 10)),
gateway.SPType("subscribe"),
)
// join https://t.me/publichat
case "join":
if len(args) < 1 {
return notEnoughArguments, true
}
_, err := c.client.JoinChatByInviteLink(&client.JoinChatByInviteLinkRequest{
InviteLink: args[0],
})
if err != nil {
return err.Error(), true
}
// create new supergroup
case "supergroup":
if len(args) < 1 {
return notEnoughArguments, true
}
_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
Title: args[0],
Description: rawCmdArguments(cmdline, 1),
})
if err != nil {
return err.Error(), true
}
// create new channel
case "channel":
if len(args) < 1 {
return notEnoughArguments, true
}
_, err := c.client.CreateNewSupergroupChat(&client.CreateNewSupergroupChatRequest{
Title: args[0],
Description: rawCmdArguments(cmdline, 1),
IsChannel: true,
})
if err != nil {
return err.Error(), true
}
// create new secret chat with current user
case "secret":
_, user, err := c.GetContactByID(chatID, nil)
if err != nil || user == nil {
return "User not found", true
}
_, err = c.client.CreateNewSecretChat(&client.CreateNewSecretChatRequest{
UserID: chatID,
})
if err != nil {
return err.Error(), true
}
// create group chat with current user
case "group":
if len(args) < 1 {
return notEnoughArguments, true
}
if chatID > 0 {
_, err := c.client.CreateNewBasicGroupChat(&client.CreateNewBasicGroupChatRequest{
UserIDs: []int64{chatID},
Title: args[0],
})
if err != nil {
return err.Error(), true
}
}
// blacklists current user
case "block":
if chatID > 0 {
_, err := c.client.ToggleMessageSenderIsBlocked(&client.ToggleMessageSenderIsBlockedRequest{
Sender: &client.MessageSenderUser{UserID: chatID},
IsBlocked: true,
})
if err != nil {
return err.Error(), true
}
}
// unblacklists current user
case "unblock":
if chatID > 0 {
_, err := c.client.ToggleMessageSenderIsBlocked(&client.ToggleMessageSenderIsBlockedRequest{
Sender: &client.MessageSenderUser{UserID: chatID},
IsBlocked: false,
})
if err != nil {
return err.Error(), true
}
}
// invite @username to current groupchat
case "invite":
if len(args) < 1 {
return notEnoughArguments, true
}
if chatID < 0 {
userID, err := c.usernameOrIDToID(args[0])
if err != nil {
return err.Error(), true
}
_, err = c.client.AddChatMember(&client.AddChatMemberRequest{
ChatID: chatID,
UserID: userID,
})
if err != nil {
return err.Error(), true
}
}
// kick @username from current group chat
case "kick":
if len(args) < 1 {
return notEnoughArguments, true
}
if chatID < 0 {
userID, err := c.usernameOrIDToID(args[0])
if err != nil {
return err.Error(), true
}
_, err = c.client.SetChatMemberStatus(&client.SetChatMemberStatusRequest{
ChatID: chatID,
UserID: userID,
Status: &client.ChatMemberStatusLeft{},
})
if err != nil {
return err.Error(), true
}
}
// ban @username from current chat [for N hours]
case "ban":
if len(args) < 1 {
return notEnoughArguments, true
}
if chatID < 0 {
userID, err := c.usernameOrIDToID(args[0])
if err != nil {
return err.Error(), true
}
var until int32
if len(args) > 1 {
hours, err := strconv.ParseInt(args[1], 10, 32)
if err != nil {
until = int32(time.Now().Unix() + hours*3600)
}
}
_, err = c.client.SetChatMemberStatus(&client.SetChatMemberStatusRequest{
ChatID: chatID,
UserID: userID,
Status: &client.ChatMemberStatusBanned{
BannedUntilDate: until,
},
})
if err != nil {
return err.Error(), true
}
}
// leave current chat
case "leave":
chat, _, err := c.GetContactByID(chatID, nil)
if err != nil {
return err.Error(), true
}
chatType := chat.Type.ChatTypeType()
if chatType == client.TypeChatTypeBasicGroup || chatType == client.TypeChatTypeSupergroup {
_, err = c.client.LeaveChat(&client.LeaveChatRequest{
ChatID: chatID,
})
if err != nil {
return err.Error(), true
}
c.unsubscribe(chatID)
}
// close secret chat
case "close":
chat, _, err := c.GetContactByID(chatID, nil)
if err != nil {
return err.Error(), true
}
chatType := chat.Type.ChatTypeType()
if chatType == client.TypeChatTypeSecret {
chatTypeSecret, _ := chat.Type.(*client.ChatTypeSecret)
_, err = c.client.CloseSecretChat(&client.CloseSecretChatRequest{
SecretChatID: chatTypeSecret.SecretChatID,
})
if err != nil {
return err.Error(), true
}
c.unsubscribe(chatID)
}
// delete current chat
case "delete":
_, err := c.client.DeleteChatHistory(&client.DeleteChatHistoryRequest{
ChatID: chatID,
RemoveFromChatList: true,
})
if err != nil {
return err.Error(), true
}
c.unsubscribe(chatID)
// message search
case "search":
var limit int32 = 10
if len(args) > 1 {
newLimit, err := strconv.ParseInt(args[1], 10, 32)
if err == nil {
limit = int32(newLimit)
}
}
var query string
if len(args) > 0 {
query = args[0]
}
messages, err := c.getLastMessages(chatID, query, 0, limit)
if err != nil {
return err.Error(), true
}
c.sendMessagesReverse(chatID, messages.Messages)
// get latest entries from history
case "history":
var limit int32 = 10
if len(args) > 0 {
newLimit, err := strconv.ParseInt(args[0], 10, 32)
if err == nil {
limit = int32(newLimit)
}
}
var messages *client.Messages
var err error
for _ = range make([]struct{}, 2) {
messages, err = c.client.GetChatHistory(&client.GetChatHistoryRequest{
ChatID: chatID,
Limit: limit,
})
if err != nil {
return err.Error(), true
}
// TDlib yields only the latest message on the first request
if !(len(messages.Messages) == 1 && limit > 1) {
break
}
}
c.sendMessagesReverse(chatID, messages.Messages)
// members list (for admins)
case "members":
var query string
if len(args) > 0 {
query = args[0]
}
members, err := c.client.SearchChatMembers(&client.SearchChatMembersRequest{
ChatID: chatID,
Limit: 9999,
Query: query,
Filter: &client.ChatMembersFilterMembers{},
})
if err != nil {
return err.Error(), true
}
var entries []string
for _, member := range members.Members {
var senderId int64
switch member.MemberID.MessageSenderType() {
case client.TypeMessageSenderUser:
memberUser, _ := member.MemberID.(*client.MessageSenderUser)
senderId = memberUser.UserID
case client.TypeMessageSenderChat:
memberChat, _ := member.MemberID.(*client.MessageSenderChat)
senderId = memberChat.ChatID
}
entries = append(entries, fmt.Sprintf(
"%v | role: %v",
c.formatContact(senderId),
member.Status.ChatMemberStatusType(),
))
}
gateway.SendMessage(
c.jid,
strconv.FormatInt(chatID, 10),
strings.Join(entries, "\n"),
c.xmpp,
)
case "help":
return helpString(helpTypeChat), true
default:
return "", false
}
return "", true
}
