diff options
Diffstat (limited to 'protocols/skype/skyped.py')
| -rw-r--r-- | protocols/skype/skyped.py | 491 |
1 files changed, 491 insertions, 0 deletions
diff --git a/protocols/skype/skyped.py b/protocols/skype/skyped.py new file mode 100644 index 00000000..615d6835 --- /dev/null +++ b/protocols/skype/skyped.py @@ -0,0 +1,491 @@ +#!/usr/bin/env python2.7 +# +# skyped.py +# +# Copyright (c) 2007, 2008, 2009, 2010, 2011 by Miklos Vajna <vmiklos@frugalware.org> +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software +# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, +# USA. +# + +import sys +import os +import signal +import locale +import time +import socket +import getopt +import Skype4Py +import hashlib +from ConfigParser import ConfigParser, NoOptionError +from traceback import print_exception +import ssl + +__version__ = "0.1.1" + +try: + import gobject + hasgobject = True +except ImportError: + import select + import threading + hasgobject = False + +def eh(type, value, tb): + global options + + if type != KeyboardInterrupt: + print_exception(type, value, tb) + if hasgobject: + gobject.MainLoop().quit() + if options.conn: + options.conn.close() + # shut down client if it's running + try: + skype.skype.Client.Shutdown() + except NameError: + pass + sys.exit("Exiting.") + +sys.excepthook = eh + +def wait_for_lock(lock, timeout_to_print, timeout, msg): + start = time.time() + locked = lock.acquire(0) + while not(locked): + time.sleep(0.5) + if timeout_to_print and (time.time() - timeout_to_print > start): + dprint("%s: Waited %f seconds" % \ + (msg, time.time() - start)) + timeout_to_print = False + if timeout and (time.time() - timeout > start): + dprint("%s: Waited %f seconds, giving up" % \ + (msg, time.time() - start)) + return False + locked = lock.acquire(0) + return True + +def input_handler(fd, io_condition = None): + global options + global skype + if options.buf: + for i in options.buf: + skype.send(i.strip()) + options.buf = None + if not hasgobject: + return True + else: + if not hasgobject: + close_socket = False + if wait_for_lock(options.lock, 3, 10, "input_handler"): + try: + input = fd.recv(1024) + options.lock.release() + except Exception, s: + dprint("Warning, receiving 1024 bytes failed (%s)." % s) + fd.close() + options.conn = False + options.lock.release() + return False + for i in input.split("\n"): + if i.strip() == "SET USERSTATUS OFFLINE": + close_socket = True + skype.send(i.strip()) + return not(close_socket) + try: + input = fd.recv(1024) + except Exception, s: + dprint("Warning, receiving 1024 bytes failed (%s)." % s) + fd.close() + return False + for i in input.split("\n"): + skype.send(i.strip()) + return True + +def skype_idle_handler(skype): + try: + c = skype.skype.Command("PING", Block=True) + skype.skype.SendCommand(c) + except Skype4Py.SkypeAPIError, s: + dprint("Warning, pinging Skype failed (%s)." % (s)) + return True + +def send(sock, txt): + global options + from time import sleep + count = 1 + done = False + if hasgobject: + while (not done) and (count < 10): + try: + sock.send(txt) + done = True + except Exception, s: + count += 1 + dprint("Warning, sending '%s' failed (%s). count=%d" % (txt, s, count)) + sleep(1) + if not done: + options.conn.close() + else: + while (not done) and (count < 10) and options.conn: + if wait_for_lock(options.lock, 3, 10, "socket send"): + try: + if options.conn: sock.send(txt) + options.lock.release() + done = True + except Exception, s: + options.lock.release() + count += 1 + dprint("Warning, sending '%s' failed (%s). count=%d" % (txt, s, count)) + sleep(1) + if not done: + if options.conn: + options.conn.close() + options.conn = False + return done + +def bitlbee_idle_handler(skype): + global options + done = False + if options.conn: + try: + e = "PING" + done = send(options.conn, "%s\n" % e) + except Exception, s: + dprint("Warning, sending '%s' failed (%s)." % (e, s)) + if hasgobject: + options.conn.close() + else: + if options.conn: options.conn.close() + options.conn = False + done = False + if hasgobject: + return True + else: + return done + return True + +def server(host, port, skype = None): + global options + if ":" in host: + sock = socket.socket(socket.AF_INET6) + else: + sock = socket.socket() + sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) + sock.bind((host, port)) + sock.listen(1) + if hasgobject: + gobject.io_add_watch(sock, gobject.IO_IN, listener) + else: + dprint("Waiting for connection...") + listener(sock, skype) + +def listener(sock, skype): + global options + if not hasgobject: + if not(wait_for_lock(options.lock, 3, 10, "listener")): return False + rawsock, addr = sock.accept() + options.conn = ssl.wrap_socket(rawsock, + server_side=True, + certfile=options.config.sslcert, + keyfile=options.config.sslkey, + ssl_version=ssl.PROTOCOL_TLSv1) + if hasattr(options.conn, 'handshake'): + try: + options.conn.handshake() + except Exception: + if not hasgobject: + options.lock.release() + dprint("Warning, handshake failed, closing connection.") + return False + ret = 0 + try: + line = options.conn.recv(1024) + if line.startswith("USERNAME") and line.split(' ')[1].strip() == options.config.username: + ret += 1 + line = options.conn.recv(1024) + if line.startswith("PASSWORD") and hashlib.sha1(line.split(' ')[1].strip()).hexdigest() == options.config.password: + ret += 1 + except Exception, s: + dprint("Warning, receiving 1024 bytes failed (%s)." % s) + options.conn.close() + if not hasgobject: + options.conn = False + options.lock.release() + return False + if ret == 2: + dprint("Username and password OK.") + options.conn.send("PASSWORD OK\n") + if hasgobject: + gobject.io_add_watch(options.conn, gobject.IO_IN, input_handler) + else: + options.lock.release() + serverloop(options, skype) + return True + else: + dprint("Username and/or password WRONG.") + options.conn.send("PASSWORD KO\n") + if not hasgobject: + options.conn.close() + options.conn = False + options.lock.release() + return False + +def dprint(msg): + from time import strftime + global options + + now = strftime("%Y-%m-%d %H:%M:%S") + + if options.debug: + try: + print now + ": " + msg + except Exception, s: + try: + sanitized = msg.encode("ascii", "backslashreplace") + except Error, s: + try: + sanitized = "hex [" + msg.encode("hex") + "]" + except Error, s: + sanitized = "[unable to print debug message]" + print now + "~=" + sanitized + sys.stdout.flush() + if options.log: + sock = open(options.log, "a") + sock.write("%s: %s\n" % (now, msg)) + sock.close() + +class SkypeApi: + def __init__(self): + self.skype = Skype4Py.Skype() + self.skype.OnNotify = self.recv + self.skype.Client.Start() + + def recv(self, msg_text): + global options + if msg_text == "PONG": + return + if "\n" in msg_text: + # crappy skype prefixes only the first line for + # multiline messages so we need to do so for the other + # lines, too. this is something like: + # 'CHATMESSAGE id BODY first line\nsecond line' -> + # 'CHATMESSAGE id BODY first line\nCHATMESSAGE id BODY second line' + prefix = " ".join(msg_text.split(" ")[:3]) + msg_text = ["%s %s" % (prefix, i) for i in " ".join(msg_text.split(" ")[3:]).split("\n")] + else: + msg_text = [msg_text] + for i in msg_text: + try: + # Internally, BitlBee always uses UTF-8 and encodes/decodes as + # necessary to communicate with the IRC client; thus send the + # UTF-8 it expects + e = i.encode('UTF-8') + except: + # Should never happen, but it's better to send difficult to + # read data than crash because some message couldn't be encoded + e = i.encode('ascii', 'backslashreplace') + if options.conn: + dprint('<< ' + e) + try: + send(options.conn, e + "\n") + except Exception, s: + dprint("Warning, sending '%s' failed (%s)." % (e, s)) + if options.conn: options.conn.close() + options.conn = False + else: + dprint('-- ' + e) + + def send(self, msg_text): + if not len(msg_text) or msg_text == "PONG": + if msg_text == "PONG": + options.last_bitlbee_pong = time.time() + return + try: + # Internally, BitlBee always uses UTF-8 and encodes/decodes as + # necessary to communicate with the IRC client; thus decode the + # UTF-8 it sent us + e = msg_text.decode('UTF-8') + except: + # Should never happen, but it's better to send difficult to read + # data to Skype than to crash + e = msg_text.decode('ascii', 'backslashreplace') + dprint('>> ' + e) + try: + c = self.skype.Command(e, Block=True) + self.skype.SendCommand(c) + self.recv(c.Reply) + except Skype4Py.SkypeError: + pass + except Skype4Py.SkypeAPIError, s: + dprint("Warning, sending '%s' failed (%s)." % (e, s)) + +class Options: + def __init__(self): + self.cfgpath = os.path.join(os.environ['HOME'], ".skyped", "skyped.conf") + # fall back to system-wide settings + self.syscfgpath = "/usr/local/etc/skyped/skyped.conf" + if os.path.exists(self.syscfgpath) and not os.path.exists(self.cfgpath): + self.cfgpath = self.syscfgpath + self.daemon = True + self.debug = False + self.help = False + self.host = "0.0.0.0" + self.log = None + self.port = None + self.version = False + # well, this is a bit hackish. we store the socket of the last connected client + # here and notify it. maybe later notify all connected clients? + self.conn = None + # this will be read first by the input handler + self.buf = None + + + def usage(self, ret): + print """Usage: skyped [OPTION]... + +skyped is a daemon that acts as a tcp server on top of a Skype instance. + +Options: + -c --config path to configuration file (default: %s) + -d --debug enable debug messages + -h --help this help + -H --host set the tcp host, supports IPv4 and IPv6 (default: %s) + -l --log set the log file in background mode (default: none) + -n --nofork don't run as daemon in the background + -p --port set the tcp port (default: %s) + -v --version display version information""" % (self.cfgpath, self.host, self.port) + sys.exit(ret) + +def serverloop(options, skype): + timeout = 1; # in seconds + skype_ping_period = 5 + bitlbee_ping_period = 10 + bitlbee_pong_timeout = 30 + now = time.time() + skype_ping_start_time = now + bitlbee_ping_start_time = now + options.last_bitlbee_pong = now + in_error = [] + handler_ok = True + while (len(in_error) == 0) and handler_ok and options.conn: + ready_to_read, ready_to_write, in_error = \ + select.select([options.conn], [], [options.conn], \ + timeout) + now = time.time() + handler_ok = len(in_error) == 0 + if (len(ready_to_read) == 1) and handler_ok: + handler_ok = input_handler(ready_to_read.pop()) + # don't ping bitlbee/skype if they already received data + now = time.time() # allow for the input_handler to take some time + bitlbee_ping_start_time = now + skype_ping_start_time = now + options.last_bitlbee_pong = now + if (now - skype_ping_period > skype_ping_start_time) and handler_ok: + handler_ok = skype_idle_handler(skype) + skype_ping_start_time = now + if now - bitlbee_ping_period > bitlbee_ping_start_time: + handler_ok = bitlbee_idle_handler(skype) + bitlbee_ping_start_time = now + if options.last_bitlbee_pong: + if (now - options.last_bitlbee_pong) > bitlbee_pong_timeout: + dprint("Bitlbee pong timeout") + # TODO is following line necessary? Should there be a options.conn.unwrap() somewhere? + # options.conn.shutdown() + if options.conn: + options.conn.close() + options.conn = False + else: + options.last_bitlbee_pong = now + +if __name__=='__main__': + options = Options() + try: + opts, args = getopt.getopt(sys.argv[1:], "c:dhH:l:np:v", ["config=", "debug", "help", "host=", "log=", "nofork", "port=", "version"]) + except getopt.GetoptError: + options.usage(1) + for opt, arg in opts: + if opt in ("-c", "--config"): + options.cfgpath = arg + elif opt in ("-d", "--debug"): + options.debug = True + elif opt in ("-h", "--help"): + options.help = True + elif opt in ("-H", "--host"): + options.host = arg + elif opt in ("-l", "--log"): + options.log = arg + elif opt in ("-n", "--nofork"): + options.daemon = False + elif opt in ("-p", "--port"): + options.port = int(arg) + elif opt in ("-v", "--version"): + options.version = True + if options.help: + options.usage(0) + elif options.version: + print "skyped %s" % __version__ + sys.exit(0) + # parse our config + if not os.path.exists(options.cfgpath): + print "Can't find configuration file at '%s'." % options.cfgpath + print "Use the -c option to specify an alternate one." + sys.exit(1) + options.config = ConfigParser() + options.config.read(options.cfgpath) + options.config.username = options.config.get('skyped', 'username').split('#')[0] + options.config.password = options.config.get('skyped', 'password').split('#')[0] + options.config.sslkey = os.path.expanduser(options.config.get('skyped', 'key').split('#')[0]) + options.config.sslcert = os.path.expanduser(options.config.get('skyped', 'cert').split('#')[0]) + # hack: we have to parse the parameters first to locate the + # config file but the -p option should overwrite the value from + # the config file + try: + options.config.port = int(options.config.get('skyped', 'port').split('#')[0]) + if not options.port: + options.port = options.config.port + except NoOptionError: + pass + if not options.port: + options.port = 2727 + dprint("Parsing config file '%s' done, username is '%s'." % (options.cfgpath, options.config.username)) + if options.daemon: + pid = os.fork() + if pid == 0: + nullin = file(os.devnull, 'r') + nullout = file(os.devnull, 'w') + os.dup2(nullin.fileno(), sys.stdin.fileno()) + os.dup2(nullout.fileno(), sys.stdout.fileno()) + os.dup2(nullout.fileno(), sys.stderr.fileno()) + else: + print 'skyped is started on port %s, pid: %d' % (options.port, pid) + sys.exit(0) + else: + dprint('skyped is started on port %s' % options.port) + if hasgobject: + server(options.host, options.port) + try: + skype = SkypeApi() + except Skype4Py.SkypeAPIError, s: + sys.exit("%s. Are you sure you have started Skype?" % s) + if hasgobject: + gobject.timeout_add(2000, skype_idle_handler, skype) + gobject.timeout_add(60000, bitlbee_idle_handler, skype) + gobject.MainLoop().run() + else: + while 1: + options.conn = False + options.lock = threading.Lock() + server(options.host, options.port, skype) |