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zhabogram/inc/xmppcomponent.rb

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require 'sqlite3'
require 'xmpp4r'
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#############################
### Some constants #########
::HELP_MESSAGE = 'Unknown command.
/login <telegram_login> — Connect to Telegram network
/code 12345 — Enter confirmation code
/password secret — Enter 2FA password
/connect ­— Connect to Telegram network if have active session
/disconnect ­— Disconnect from Telegram network
/logout — Disconnect from Telegram network and forget session
'
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#############################
#############################
## XMPP Transport Class #####
#############################
class XMPPComponent
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# init class and set logger #
def initialize(params)
@@loglevel = params['loglevel'] || Logger::DEBUG
@logger = Logger.new(STDOUT); @logger.level = @@loglevel; @logger.progname = '[XMPPComponent]'
@config = { host: params["host"] || 'localhost', port: params["port"] || 8899, jid: params["jid"] || 'tlgrm.rxtx.us', secret: params['secret'] || '' } # default config
@sessions = {}
@db = SQLite3::Database.new(params['db_path'] || 'users.db')
@db.execute("CREATE TABLE IF NOT EXISTS users(jid varchar(256), tg_login varchar(256), PRIMARY KEY(jid) );")
@db.results_as_hash = true
end
# database #
def load_db(jid = nil) # load
@logger.info "Initializing database.."
query = (jid.nil?) ? "SELECT * FROM users" : "SELECT * FROM users where jid = '%s';" % jid
@logger.debug(query)
@db.execute(query) do |user|
@logger.info "Found session for JID %s and Telegram login %s" % [ user["jid"].to_s, user["tg_login"] ]
@sessions[user["jid"]] = XMPPSession.new(user["jid"], user["tg_login"])
end
end
def update_db(jid, delete = false) # write
return if not @sessions.key? jid
@logger.info "Writing database [%s].." % jid.to_s
query = (delete) ? "DELETE FROM users where jid = '%s';" % jid.to_s : "INSERT OR REPLACE INTO users(jid, tg_login) VALUES('%s', '%s');" % [jid.to_s, @sessions[jid].tg_login.to_s]
@logger.debug query
@db.execute(query)
end
# transport initialization & connecting to XMPP server #
def connect() # :jid => transport_jid, :host => xmpp_server, :port => xmpp_component_port, :secret => xmpp_component_secret
@logger.info "Connecting.."
begin
@@transport = Jabber::Component.new( @config[:jid] )
@@transport.connect( @config[:host], @config[:port] )
@@transport.auth( @config[:secret] )
@@transport.add_message_callback do |msg| msg.first_element_text('body') ? self.message_handler(msg) : nil end
@@transport.add_presence_callback do |presence| self.presence_handler(presence) end
@@transport.add_iq_callback do |iq| self.iq_handler(iq) end
@logger.info "Connection established"
self.load_db()
@logger.info 'Found %s sessions in database.' % @sessions.count
@sessions.each do |jid, session|
@logger.debug "Sending presence to %s" % jid
p = Jabber::Presence.new()
p.to = jid
p.from = @@transport.jid
p.type = :subscribe
@logger.debug p
@@transport.send(p)
end
Thread.stop()
rescue Exception => e
@logger.error 'Connection failed: %s' % e
@db.close
exit 1
end
end
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#############################
#### Callback handlers #####
#############################
# new message to XMPP component #
def message_handler(msg)
@logger.info 'New message from [%s] to [%s]' % [msg.from, msg.to]
return self.process_internal_command(msg.from.bare.to_s, msg.first_element_text('body') ) if msg.to == @@transport.jid # treat message as internal command if received as transport jid
return @sessions[msg.from.bare.to_s].tg_outgoing(msg.to.to_s, msg.first_element_text('body')) #if @sessions.key? msg.from.bare.to_s and @sessions[msg.from.bare.to_s].online? # queue message for processing session is active for jid from
end
def presence_handler(presence)
@logger.debug "New presence iq received"
@logger.debug(presence)
if presence.type == :subscribe then reply = presence.answer(false); reply.type = :subscribed; @@transport.send(reply); end # send "subscribed" reply to "subscribe" presence
if presence.to == @@transport.jid and @sessions.key? presence.from.bare.to_s and presence.type == :unavailable then @sessions[presence.from.bare.to_s].disconnect(); return; end # go offline when received offline presence from jabber user
if presence.to == @@transport.jid and @sessions.key? presence.from.bare.to_s then @sessions[presence.from.bare.to_s].connect(); return; end # connect if we have session
end
def iq_handler(iq)
@logger.debug "New iq received"
@logger.debug(iq.to_s)
reply = iq.answer
if iq.vcard and @sessions.key? iq.from.bare.to_s then
vcard = @sessions[iq.from.bare.to_s].make_vcard(iq.to.to_s)
reply.type = :result
reply.elements["vCard"] = vcard
@@transport.send(reply)
else
reply.type = :error
end
@@transport.send(reply)
end
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#############################
#### Command handlers #####
#############################
# process internal /command #
def process_internal_command(jfrom, body)
case body.split[0] # /command argument = [command, argument]
when '/login' # creating new session if not exists and connect if user already has session
@sessions[jfrom] = XMPPSession.new(jfrom, body.split[1]) if not @sessions.key? jfrom
@sessions[jfrom].connect()
self.update_db(jfrom)
when '/code', '/password' # pass auth data if we have session
@sessions[jfrom].tg_auth(body.split[0], body.split[1]) if @sessions.key? jfrom
when '/connect' # going online
@sessions[jfrom].connect() if @sessions.key? jfrom
when '/disconnect' # going offline without destroying a session
@sessions[jfrom].disconnect() if @sessions.key? jfrom
when '/logout' # destroying session
@sessions[jfrom].disconnect(true) if @sessions.key? jfrom
self.update_db(jfrom, true)
@sessions.delete(jfrom)
else # unknown command -- display help #
msg = Jabber::Message.new
msg.from = @@transport.jid
msg.to = jfrom
msg.body = ::HELP_MESSAGE
msg.type = :chat
@@transport.send(msg)
end
end
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end
#############################
## XMPP Session Class #######
#############################
class XMPPSession < XMPPComponent
attr_reader :user_jid, :tg_login
attr_accessor :online
# start XMPP user session and Telegram client instance #
def initialize(jid, tg_login)
@logger = Logger.new(STDOUT); @logger.level = @@loglevel; @logger.progname = '[XMPPSession: %s/%s]' % [jid, tg_login] # init logger
@logger.info "Initializing new session.."
@user_jid, @tg_login = jid, tg_login
end
# connect to tg #
def connect()
return if self.online?
@logger.info "Spawning Telegram client.."
@online = nil
@telegram = TelegramClient.new(self, @tg_login) # init tg instance in new thread
end
# disconnect from tg#
def disconnect(logout = false)
return if not self.online? or not @telegram
@logger.info "Disconnecting Telegram client.."
@telegram.disconnect(logout)
end
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###########################################
# send message to current user via XMPP #
def incoming_message(from = nil, body = '')
@logger.info "Received new message from Telegram peer %s" % from || "[self]"
reply = Jabber::Message.new
reply.type = :chat
reply.from = from.nil? ? @@transport.jid : from.to_s+'@'+@@transport.jid.to_s
reply.to = @user_jid
reply.body = body
@logger.debug reply
@@transport.send(reply)
end
# presence update #
def presence(from, type = nil, show = nil, status = nil, nickname = nil)
@logger.debug "Presence update request from %s.." %from.to_s
req = Jabber::Presence.new()
req.from = from.nil? ? @@transport.jid : from.to_s+'@'+@@transport.jid.to_s # presence <from>
req.to = @user_jid # presence <to>
req.type = type unless type.nil? # pres. type
req.show = show unless show.nil? # presence <show>
req.status = status unless status.nil? # presence message
req.add_element('nick', {'xmlns' => 'http://jabber.org/protocol/nick'} ).add_text(nickname) unless nickname.nil? # nickname
@logger.debug req
@@transport.send(req)
end
###########################################
# queue message (we will share this queue within :message_queue to Telegram client thread) #
def tg_outgoing(to, text = '')
@logger.debug "Sending message to be sent to Telegram network user -> " % to
@telegram.process_outgoing_msg(to.split('@')[0].to_i, text)
end
# enter auth data (we will share this data within :auth_data {} to Telegram client thread ) #
def tg_auth(typ, data)
@logger.info "Authenticating in Telegram network with :%s" % typ
@telegram.process_auth(typ, data)
end
# make vcard from telegram contact #
def make_vcard(to)
@logger.debug "Requesting information to make a VCard for Telegram contact..." # title, username, firstname, lastname, phone, bio, userpic
fn, nickname, given, family, phone, desc, photo = @telegram.get_contact_info(to.split('@')[0].to_i)
vcard = Jabber::Vcard::IqVcard.new()
vcard["FN"] = fn
vcard["NICKNAME"] = nickname if nickname
vcard["URL"] = "https://t.me/%s" % nickname if nickname
vcard["N/GIVEN"] = given if given
vcard["N/FAMILY"] = family if family
vcard["DESC"] = desc if desc
vcard["PHOTO/TYPE"] = 'image/jpeg' if photo
vcard["PHOTO/BINVAL"] = photo if photo
if phone then
ph = vcard.add_element("TEL")
ph.add_element("HOME")
ph.add_element("VOICE")
ph.add_element("NUMBER")
ph.elements["NUMBER"].text = phone
end
@logger.debug vcard.to_s
return vcard
end
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###########################################
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# session status #
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def online?() @online end
def online!() @logger.info "Connection established"; @online = true; self.presence(nil, :subscribe); self.presence(nil, nil, nil, "Logged in as " + @tg_login.to_s) end
def offline!() @online = false; self.presence(nil, :unavailable, nil, "Logged out"); @telegram = nil; end
end