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source: protocols/skype/skyped.py @ 727a68b

Last change on this file since 727a68b was a016221, checked in by Miklos Vajna <vmiklos@…>, at 2013-04-21T19:39:39Z
skyped: missing newline in log
Property mode set to `100644`
File size: 15.4 KB

Rev	Line
[47c590c]	1	#!/usr/bin/env python2.7
[b56c76c]	2	#
[cd3022c]	3	# skyped.py
[b56c76c]	4	#
[9ec6b36]	5	# Copyright (c) 2007-2013 by Miklos Vajna <vmiklos@vmiklos.hu>
[cd3022c]	6	#
	7	# This program is free software; you can redistribute it and/or modify
	8	# it under the terms of the GNU General Public License as published by
	9	# the Free Software Foundation; either version 2 of the License, or
	10	# (at your option) any later version.
[b56c76c]	11	#
[cd3022c]	12	# This program is distributed in the hope that it will be useful,
	13	# but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	# GNU General Public License for more details.
[b56c76c]	16	#
[cd3022c]	17	# You should have received a copy of the GNU General Public License
	18	# along with this program; if not, write to the Free Software
[b56c76c]	19	# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
[cd3022c]	20	# USA.
	21	#
	22
[4ddda13]	23	import sys
[8237df5]	24	import os
[4ddda13]	25	import signal
	26	import time
	27	import socket
[c15f71a]	28	import Skype4Py
[8edfc90]	29	import hashlib
[d891915]	30	from ConfigParser import ConfigParser, NoOptionError
[eeeb30e]	31	from traceback import print_exception
[9ce44dd]	32	from fcntl import fcntl, F_SETFD, FD_CLOEXEC
[c7000bb]	33	import ssl
[4ddda13]	34
[8237df5]	35	__version__ = "0.1.1"
[4ddda13]	36
[d5a66f8]	37	try:
	38	import gobject
	39	hasgobject = True
	40	except ImportError:
	41	import select
	42	import threading
	43	hasgobject = False
	44
[eeeb30e]	45	def eh(type, value, tb):
[a618ea6]	46	global options
	47
[3a2a0b2]	48	if type != KeyboardInterrupt:
	49	print_exception(type, value, tb)
[d5a66f8]	50	if hasgobject:
	51	gobject.MainLoop().quit()
[53eb75c]	52	if options.conn:
	53	options.conn.close()
[7e5b4bd]	54	if not options.dont_start_skype:
	55	# shut down client if it's running
	56	try:
	57	skype.skype.Client.Shutdown()
	58	except NameError:
	59	pass
[3a2a0b2]	60	sys.exit("Exiting.")
[eeeb30e]	61
	62	sys.excepthook = eh
	63
[d45adcf]	64	def wait_for_lock(lock, timeout_to_print, timeout, msg):
	65	start = time.time()
	66	locked = lock.acquire(0)
	67	while not(locked):
	68	time.sleep(0.5)
	69	if timeout_to_print and (time.time() - timeout_to_print > start):
	70	dprint("%s: Waited %f seconds" % \
	71	(msg, time.time() - start))
	72	timeout_to_print = False
	73	if timeout and (time.time() - timeout > start):
	74	dprint("%s: Waited %f seconds, giving up" % \
	75	(msg, time.time() - start))
	76	return False
	77	locked = lock.acquire(0)
	78	return True
	79
[d5a66f8]	80	def input_handler(fd, io_condition = None):
[5245e9d]	81	global options
[e530abd]	82	global skype
[5245e9d]	83	if options.buf:
	84	for i in options.buf:
	85	skype.send(i.strip())
	86	options.buf = None
[d5a66f8]	87	if not hasgobject:
	88	return True
[5245e9d]	89	else:
[d5a66f8]	90	if not hasgobject:
	91	close_socket = False
	92	if wait_for_lock(options.lock, 3, 10, "input_handler"):
	93	try:
	94	input = fd.recv(1024)
	95	options.lock.release()
	96	except Exception, s:
	97	dprint("Warning, receiving 1024 bytes failed (%s)." % s)
	98	fd.close()
	99	options.conn = False
[d45adcf]	100	options.lock.release()
[d5a66f8]	101	return False
	102	for i in input.split("\n"):
	103	if i.strip() == "SET USERSTATUS OFFLINE":
	104	close_socket = True
	105	skype.send(i.strip())
	106	return not(close_socket)
	107	try:
	108	input = fd.recv(1024)
	109	except Exception, s:
	110	dprint("Warning, receiving 1024 bytes failed (%s)." % s)
	111	fd.close()
	112	return False
	113	for i in input.split("\n"):
	114	skype.send(i.strip())
	115	return True
[c15f71a]	116
[4b0092e]	117	def skype_idle_handler(skype):
[3922d44]	118	try:
[6af541d]	119	c = skype.skype.Command("PING", Block=True)
	120	skype.skype.SendCommand(c)
[1a0b734]	121	except (Skype4Py.SkypeAPIError, AttributeError), s:
[3922d44]	122	dprint("Warning, pinging Skype failed (%s)." % (s))
[1a0b734]	123	time.sleep(1)
[94bd28f]	124	return True
[4ddda13]	125
[8e166ae]	126	def send(sock, txt, tries=10):
[1130561]	127	global options
[d5a66f8]	128	if hasgobject:
[5a4f22e]	129	if not options.conn: return
	130	try:
[2363cca]	131	done = sock.sendall(txt)
[b6ab05b]	132	except socket.error as s:
[5a4f22e]	133	dprint("Warning, sending '%s' failed (%s)." % (txt, s))
[53eb75c]	134	options.conn.close()
[5a4f22e]	135	options.conn = False
[d5a66f8]	136	else:
[8e166ae]	137	for attempt in xrange(1, tries+1):
	138	if not options.conn: break
[d5a66f8]	139	if wait_for_lock(options.lock, 3, 10, "socket send"):
	140	try:
[2363cca]	141	if options.conn: done = sock.sendall(txt)
[d5a66f8]	142	options.lock.release()
[b6ab05b]	143	except socket.error as s:
[d5a66f8]	144	options.lock.release()
	145	dprint("Warning, sending '%s' failed (%s). count=%d" % (txt, s, count))
[8e166ae]	146	time.sleep(1)
	147	else:
	148	break
	149	else:
[d5a66f8]	150	if options.conn:
	151	options.conn.close()
	152	options.conn = False
	153	return done
[a618ea6]	154
[4b0092e]	155	def bitlbee_idle_handler(skype):
[eeab8bc]	156	global options
[e530abd]	157	done = False
[4b0092e]	158	if options.conn:
	159	try:
	160	e = "PING"
[e530abd]	161	done = send(options.conn, "%s\n" % e)
[4b0092e]	162	except Exception, s:
	163	dprint("Warning, sending '%s' failed (%s)." % (e, s))
[d5a66f8]	164	if hasgobject:
	165	options.conn.close()
	166	else:
	167	if options.conn: options.conn.close()
	168	options.conn = False
	169	done = False
	170	if hasgobject:
	171	return True
	172	else:
	173	return done
	174	return True
[4b0092e]	175
[d5a66f8]	176	def server(host, port, skype = None):
[c7304b2]	177	global options
[05d964c]	178	if ":" in host:
	179	sock = socket.socket(socket.AF_INET6)
	180	else:
	181	sock = socket.socket()
[a316c4e]	182	sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
[9ce44dd]	183	fcntl(sock, F_SETFD, FD_CLOEXEC);
[a316c4e]	184	sock.bind((host, port))
	185	sock.listen(1)
[9ce44dd]	186
[d5a66f8]	187	if hasgobject:
	188	gobject.io_add_watch(sock, gobject.IO_IN, listener)
	189	else:
	190	dprint("Waiting for connection...")
	191	listener(sock, skype)
[a316c4e]	192
[eeab8bc]	193	def listener(sock, skype):
[5245e9d]	194	global options
[d5a66f8]	195	if not hasgobject:
	196	if not(wait_for_lock(options.lock, 3, 10, "listener")): return False
[c7000bb]	197	rawsock, addr = sock.accept()
[6ba00ac]	198	try:
	199	options.conn = ssl.wrap_socket(rawsock,
	200	server_side=True,
	201	certfile=options.config.sslcert,
	202	keyfile=options.config.sslkey,
	203	ssl_version=ssl.PROTOCOL_TLSv1)
[4da4e9b]	204	except (ssl.SSLError, socket.error) as err:
	205	if isinstance(err, ssl.SSLError):
	206	dprint("Warning, SSL init failed, did you create your certificate?")
	207	return False
	208	else:
	209	dprint('Warning, SSL init failed')
	210	return True
[b0d40f5]	211	if hasattr(options.conn, 'handshake'):
[5588f7c4]	212	try:
	213	options.conn.handshake()
	214	except Exception:
[d5a66f8]	215	if not hasgobject:
	216	options.lock.release()
[5588f7c4]	217	dprint("Warning, handshake failed, closing connection.")
	218	return False
[5245e9d]	219	ret = 0
[6b9cab1]	220	try:
	221	line = options.conn.recv(1024)
	222	if line.startswith("USERNAME") and line.split(' ')[1].strip() == options.config.username:
	223	ret += 1
	224	line = options.conn.recv(1024)
[8edfc90]	225	if line.startswith("PASSWORD") and hashlib.sha1(line.split(' ')[1].strip()).hexdigest() == options.config.password:
[6b9cab1]	226	ret += 1
	227	except Exception, s:
	228	dprint("Warning, receiving 1024 bytes failed (%s)." % s)
	229	options.conn.close()
[d5a66f8]	230	if not hasgobject:
	231	options.conn = False
	232	options.lock.release()
[6b9cab1]	233	return False
[5245e9d]	234	if ret == 2:
	235	dprint("Username and password OK.")
[c7304b2]	236	options.conn.send("PASSWORD OK\n")
[d5a66f8]	237	if hasgobject:
	238	gobject.io_add_watch(options.conn, gobject.IO_IN, input_handler)
	239	else:
	240	options.lock.release()
	241	serverloop(options, skype)
[5245e9d]	242	return True
	243	else:
	244	dprint("Username and/or password WRONG.")
[c7304b2]	245	options.conn.send("PASSWORD KO\n")
[d5a66f8]	246	if not hasgobject:
	247	options.conn.close()
	248	options.conn = False
	249	options.lock.release()
[5245e9d]	250	return False
[a316c4e]	251
	252	def dprint(msg):
[ffd078a]	253	from time import strftime
[8237df5]	254	global options
	255
	256	if options.debug:
[52ceb4b]	257	import inspect
	258	prefix = strftime("[%Y-%m-%d %H:%M:%S]") + " %s:%d" % inspect.stack()[1][1:3]
[c440320]	259	sanitized = msg
	260
[f503585]	261	try:
[52ceb4b]	262	print prefix + ": " + msg
[f503585]	263	except Exception, s:
	264	try:
	265	sanitized = msg.encode("ascii", "backslashreplace")
	266	except Error, s:
	267	try:
	268	sanitized = "hex [" + msg.encode("hex") + "]"
	269	except Error, s:
	270	sanitized = "[unable to print debug message]"
[52ceb4b]	271	print prefix + "~=" + sanitized
[c440320]	272
	273	if options.log:
	274	sock = open(options.log, "a")
[a016221]	275	sock.write("%s: %s\n" % (prefix, sanitized))
[c440320]	276	sock.close()
	277
[a618ea6]	278	sys.stdout.flush()
[a316c4e]	279
[fffabad]	280	class MockedSkype:
	281	"""Mock class for Skype4Py.Skype(), in case the -m option is used."""
	282	def __init__(self, mock):
	283	sock = open(mock)
	284	self.lines = sock.readlines()
[b56c76c]	285
[fffabad]	286	def SendCommand(self, c):
	287	pass
	288
	289	def Command(self, msg, Block):
	290	if msg == "PING":
	291	return ["PONG"]
	292	line = self.lines[0].strip()
	293	if not line.startswith(">> "):
	294	raise Exception("Corrupted mock input")
	295	line = line[3:]
	296	if line != msg:
	297	raise Exception("'%s' != '%s'" % (line, msg))
	298	self.lines = self.lines[1:] # drop the expected incoming line
	299	ret = []
	300	while True:
	301	# and now send back all the following lines, up to the next expected incoming line
	302	if len(self.lines) == 0:
	303	break
	304	if self.lines[0].startswith(">> "):
	305	break
	306	if not self.lines[0].startswith("<< "):
	307	raise Exception("Corrupted mock input")
	308	ret.append(self.lines[0][3:].strip())
	309	self.lines = self.lines[1:]
	310	return ret
	311
[944a941]	312	class SkypeApi:
[fffabad]	313	def __init__(self, mock):
[7e5b4bd]	314	global options
[fffabad]	315	if not mock:
	316	self.skype = Skype4Py.Skype()
	317	self.skype.OnNotify = self.recv
[7e5b4bd]	318	if not options.dont_start_skype:
	319	self.skype.Client.Start()
[fffabad]	320	else:
	321	self.skype = MockedSkype(mock)
[94bd28f]	322
[5268bd7]	323	def recv(self, msg_text):
[5245e9d]	324	global options
[d86dfb1]	325	if msg_text == "PONG":
	326	return
[c15f71a]	327	if "\n" in msg_text:
[7613670]	328	# crappy skype prefixes only the first line for
	329	# multiline messages so we need to do so for the other
	330	# lines, too. this is something like:
	331	# 'CHATMESSAGE id BODY first line\nsecond line' ->
	332	# 'CHATMESSAGE id BODY first line\nCHATMESSAGE id BODY second line'
[c15f71a]	333	prefix = " ".join(msg_text.split(" ")[:3])
	334	msg_text = ["%s %s" % (prefix, i) for i in " ".join(msg_text.split(" ")[3:]).split("\n")]
[7613670]	335	else:
[c15f71a]	336	msg_text = [msg_text]
	337	for i in msg_text:
[3423be0]	338	try:
	339	# Internally, BitlBee always uses UTF-8 and encodes/decodes as
	340	# necessary to communicate with the IRC client; thus send the
	341	# UTF-8 it expects
	342	e = i.encode('UTF-8')
	343	except:
	344	# Should never happen, but it's better to send difficult to
	345	# read data than crash because some message couldn't be encoded
	346	e = i.encode('ascii', 'backslashreplace')
[5245e9d]	347	if options.conn:
[e530abd]	348	dprint('<< ' + e)
[af8675f]	349	try:
[a618ea6]	350	send(options.conn, e + "\n")
[80dfdce]	351	except Exception, s:
[a75f2a7]	352	dprint("Warning, sending '%s' failed (%s)." % (e, s))
[e530abd]	353	if options.conn: options.conn.close()
	354	options.conn = False
	355	else:
[53eb75c]	356	dprint('-- ' + e)
[c15f71a]	357
	358	def send(self, msg_text):
[4b0092e]	359	if not len(msg_text) or msg_text == "PONG":
[53eb75c]	360	if msg_text == "PONG":
	361	options.last_bitlbee_pong = time.time()
[c15f71a]	362	return
[885e563e]	363	try:
[3423be0]	364	# Internally, BitlBee always uses UTF-8 and encodes/decodes as
	365	# necessary to communicate with the IRC client; thus decode the
	366	# UTF-8 it sent us
[885e563e]	367	e = msg_text.decode('UTF-8')
[3423be0]	368	except:
	369	# Should never happen, but it's better to send difficult to read
	370	# data to Skype than to crash
	371	e = msg_text.decode('ascii', 'backslashreplace')
[52d779e]	372	dprint('>> ' + e)
[c15f71a]	373	try:
[05cf927]	374	c = self.skype.Command(e, Block=True)
	375	self.skype.SendCommand(c)
[fffabad]	376	if hasattr(c, "Reply"):
	377	self.recv(c.Reply) # Skype4Py answer
	378	else:
	379	for i in c: # mock may return multiple iterable answers
	380	self.recv(i)
[05cf927]	381	except Skype4Py.SkypeError:
[c15f71a]	382	pass
[8b3beef]	383	except Skype4Py.SkypeAPIError, s:
[a75f2a7]	384	dprint("Warning, sending '%s' failed (%s)." % (e, s))
[4ddda13]	385
[8237df5]	386
[eeab8bc]	387	def serverloop(options, skype):
	388	timeout = 1; # in seconds
	389	skype_ping_period = 5
[e530abd]	390	bitlbee_ping_period = 10
	391	bitlbee_pong_timeout = 30
	392	now = time.time()
	393	skype_ping_start_time = now
	394	bitlbee_ping_start_time = now
	395	options.last_bitlbee_pong = now
	396	in_error = []
	397	handler_ok = True
	398	while (len(in_error) == 0) and handler_ok and options.conn:
[eeab8bc]	399	ready_to_read, ready_to_write, in_error = \
[9c51166]	400	select.select([options.conn], [], [options.conn], \
	401	timeout)
[eeab8bc]	402	now = time.time()
[9c51166]	403	handler_ok = len(in_error) == 0
	404	if (len(ready_to_read) == 1) and handler_ok:
[e530abd]	405	handler_ok = input_handler(ready_to_read.pop())
[eeab8bc]	406	# don't ping bitlbee/skype if they already received data
[9c51166]	407	now = time.time() # allow for the input_handler to take some time
[eeab8bc]	408	bitlbee_ping_start_time = now
	409	skype_ping_start_time = now
[9c51166]	410	options.last_bitlbee_pong = now
[e530abd]	411	if (now - skype_ping_period > skype_ping_start_time) and handler_ok:
	412	handler_ok = skype_idle_handler(skype)
[eeab8bc]	413	skype_ping_start_time = now
	414	if now - bitlbee_ping_period > bitlbee_ping_start_time:
[e530abd]	415	handler_ok = bitlbee_idle_handler(skype)
[eeab8bc]	416	bitlbee_ping_start_time = now
[e530abd]	417	if options.last_bitlbee_pong:
	418	if (now - options.last_bitlbee_pong) > bitlbee_pong_timeout:
	419	dprint("Bitlbee pong timeout")
	420	# TODO is following line necessary? Should there be a options.conn.unwrap() somewhere?
	421	# options.conn.shutdown()
[53eb75c]	422	if options.conn:
	423	options.conn.close()
[e530abd]	424	options.conn = False
	425	else:
	426	options.last_bitlbee_pong = now
[eeab8bc]	427
[b56c76c]	428
	429	def main(args=None):
	430	global options
	431	global skype
	432
	433	cfgpath = os.path.join(os.environ['HOME'], ".skyped", "skyped.conf")
	434	syscfgpath = "/usr/local/etc/skyped/skyped.conf"
	435	if not os.path.exists(cfgpath) and os.path.exists(syscfgpath):
	436	cfgpath = syscfgpath # fall back to system-wide settings
	437	port = 2727
	438
	439	import argparse
	440	parser = argparse.ArgumentParser()
	441	parser.add_argument('-c', '--config',
	442	metavar='path', default=cfgpath,
	443	help='path to configuration file (default: %(default)s)')
	444	parser.add_argument('-H', '--host', default='0.0.0.0',
	445	help='set the tcp host, supports IPv4 and IPv6 (default: %(default)s)')
	446	parser.add_argument('-p', '--port', type=int,
	447	help='set the tcp port (default: %(default)s)')
	448	parser.add_argument('-l', '--log', metavar='path',
	449	help='set the log file in background mode (default: none)')
	450	parser.add_argument('-v', '--version', action='store_true', help='display version information')
	451	parser.add_argument('-n', '--nofork',
	452	action='store_true', help="don't run as daemon in the background")
[7e5b4bd]	453	parser.add_argument('-s', '--dont-start-skype', action='store_true',
	454	help="assume that skype is running independently, don't try to start/stop it")
[b56c76c]	455	parser.add_argument('-m', '--mock', help='fake interactions with skype (only useful for tests)')
	456	parser.add_argument('-d', '--debug', action='store_true', help='enable debug messages')
	457	options = parser.parse_args(sys.argv[1:] if args is None else args)
	458
	459	if options.version:
[8237df5]	460	print "skyped %s" % __version__
	461	sys.exit(0)
[b56c76c]	462
	463	# well, this is a bit hackish. we store the socket of the last connected client
	464	# here and notify it. maybe later notify all connected clients?
	465	options.conn = None
	466	# this will be read first by the input handler
	467	options.buf = None
	468
	469	if not os.path.exists(options.config):
[8407e25]	470	parser.error(( "Can't find configuration file at '%s'. "
[b56c76c]	471	"Use the -c option to specify an alternate one." )% options.config)
	472
	473	cfgpath = options.config
[5245e9d]	474	options.config = ConfigParser()
[b56c76c]	475	options.config.read(cfgpath)
	476	options.config.username = options.config.get('skyped', 'username').split('#', 1)[0]
	477	options.config.password = options.config.get('skyped', 'password').split('#', 1)[0]
	478	options.config.sslkey = os.path.expanduser(options.config.get('skyped', 'key').split('#', 1)[0])
	479	options.config.sslcert = os.path.expanduser(options.config.get('skyped', 'cert').split('#', 1)[0])
	480
[d891915]	481	# hack: we have to parse the parameters first to locate the
	482	# config file but the -p option should overwrite the value from
	483	# the config file
	484	try:
[b56c76c]	485	options.config.port = int(options.config.get('skyped', 'port').split('#', 1)[0])
[d891915]	486	if not options.port:
	487	options.port = options.config.port
	488	except NoOptionError:
	489	pass
	490	if not options.port:
[b56c76c]	491	options.port = port
[3bf9f71]	492	dprint("Parsing config file '%s' done, username is '%s'." % (cfgpath, options.config.username))
[b56c76c]	493	if not options.nofork:
[8237df5]	494	pid = os.fork()
	495	if pid == 0:
[56ae398]	496	nullin = file(os.devnull, 'r')
	497	nullout = file(os.devnull, 'w')
[8237df5]	498	os.dup2(nullin.fileno(), sys.stdin.fileno())
	499	os.dup2(nullout.fileno(), sys.stdout.fileno())
	500	os.dup2(nullout.fileno(), sys.stderr.fileno())
	501	else:
	502	print 'skyped is started on port %s, pid: %d' % (options.port, pid)
	503	sys.exit(0)
[d891915]	504	else:
	505	dprint('skyped is started on port %s' % options.port)
[d5a66f8]	506	if hasgobject:
	507	server(options.host, options.port)
[c15f71a]	508	try:
[fffabad]	509	skype = SkypeApi(options.mock)
[8b3beef]	510	except Skype4Py.SkypeAPIError, s:
[c15f71a]	511	sys.exit("%s. Are you sure you have started Skype?" % s)
[d5a66f8]	512	if hasgobject:
	513	gobject.timeout_add(2000, skype_idle_handler, skype)
	514	gobject.timeout_add(60000, bitlbee_idle_handler, skype)
	515	gobject.MainLoop().run()
	516	else:
	517	while 1:
	518	options.conn = False
	519	options.lock = threading.Lock()
	520	server(options.host, options.port, skype)
[b56c76c]	521
	522
	523	if __name__ == '__main__': main()

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