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#!/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
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")
# for backwards compatibility
self.syscfgpath = "/usr/local/etc/skyped/skyped.conf"
if os.path.exists(self.syscfgpath):
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 (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)
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