1 | #!/usr/bin/env python |
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2 | # |
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3 | # skyped.py |
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4 | # |
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5 | # Copyright (c) 2007, 2008, 2009, 2010 by Miklos Vajna <vmiklos@frugalware.org> |
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6 | # |
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7 | # This program is free software; you can redistribute it and/or modify |
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8 | # it under the terms of the GNU General Public License as published by |
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9 | # the Free Software Foundation; either version 2 of the License, or |
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10 | # (at your option) any later version. |
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11 | # |
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12 | # This program is distributed in the hope that it will be useful, |
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13 | # but WITHOUT ANY WARRANTY; without even the implied warranty of |
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14 | # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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15 | # GNU General Public License for more details. |
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16 | # |
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17 | # You should have received a copy of the GNU General Public License |
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18 | # along with this program; if not, write to the Free Software |
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19 | # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, |
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20 | # USA. |
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21 | # |
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22 | |
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23 | import sys |
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24 | import os |
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25 | import signal |
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26 | import locale |
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27 | import time |
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28 | import gobject |
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29 | import socket |
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30 | import getopt |
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31 | import Skype4Py |
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32 | import hashlib |
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33 | from ConfigParser import ConfigParser, NoOptionError |
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34 | from traceback import print_exception |
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35 | |
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36 | __version__ = "0.1.1" |
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37 | |
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38 | def eh(type, value, tb): |
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39 | if type != KeyboardInterrupt: |
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40 | print_exception(type, value, tb) |
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41 | gobject.MainLoop().quit() |
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42 | # shut down client if it's running |
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43 | try: |
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44 | skype.skype.Client.Shutdown() |
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45 | except NameError: |
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46 | pass |
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47 | sys.exit("Exiting.") |
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48 | |
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49 | sys.excepthook = eh |
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50 | |
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51 | def input_handler(fd, io_condition): |
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52 | global options |
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53 | if options.buf: |
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54 | for i in options.buf: |
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55 | skype.send(i.strip()) |
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56 | options.buf = None |
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57 | else: |
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58 | try: |
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59 | input = fd.recv(1024) |
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60 | except Exception, s: |
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61 | dprint("Warning, receiving 1024 bytes failed (%s)." % s) |
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62 | fd.close() |
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63 | return False |
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64 | for i in input.split("\n"): |
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65 | skype.send(i.strip()) |
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66 | return True |
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67 | |
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68 | def skype_idle_handler(skype): |
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69 | try: |
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70 | c = skype.skype.Command("PING", Block=True) |
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71 | skype.skype.SendCommand(c) |
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72 | except Skype4Py.SkypeAPIError, s: |
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73 | dprint("Warning, pinging Skype failed (%s)." % (s)) |
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74 | return True |
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75 | |
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76 | def bitlbee_idle_handler(skype): |
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77 | if options.conn: |
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78 | try: |
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79 | e = "PING" |
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80 | options.conn.send("%s\n" % e) |
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81 | except Exception, s: |
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82 | dprint("Warning, sending '%s' failed (%s)." % (e, s)) |
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83 | options.conn.close() |
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84 | return True |
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85 | |
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86 | def server(host, port): |
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87 | global options |
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88 | try: |
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89 | if "SKYPED_NO_GNUTLS" in os.environ.keys(): |
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90 | dprint("Warning, using OpenSSL instead of gnutls as requested (not recommended).") |
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91 | raise ImportError |
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92 | from gnutls import crypto, connection |
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93 | cert = crypto.X509Certificate(open(options.config.sslcert).read()) |
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94 | key = crypto.X509PrivateKey(open(options.config.sslkey).read()) |
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95 | cred = connection.X509Credentials(cert, key) |
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96 | sock = connection.ServerSessionFactory(socket.socket(), cred) |
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97 | except ImportError: |
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98 | from OpenSSL import SSL |
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99 | ctx = SSL.Context(SSL.TLSv1_METHOD) |
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100 | ctx.use_privatekey_file(options.config.sslkey) |
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101 | ctx.use_certificate_file(options.config.sslcert) |
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102 | sock = SSL.Connection(ctx, socket.socket()) |
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103 | sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) |
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104 | sock.bind((host, port)) |
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105 | sock.listen(1) |
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106 | gobject.io_add_watch(sock, gobject.IO_IN, listener) |
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107 | |
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108 | def listener(sock, *args): |
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109 | global options |
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110 | options.conn, addr = sock.accept() |
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111 | if hasattr(options.conn, 'handshake'): |
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112 | try: |
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113 | options.conn.handshake() |
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114 | except Exception: |
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115 | dprint("Warning, handshake failed, closing connection.") |
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116 | return False |
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117 | ret = 0 |
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118 | try: |
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119 | line = options.conn.recv(1024) |
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120 | if line.startswith("USERNAME") and line.split(' ')[1].strip() == options.config.username: |
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121 | ret += 1 |
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122 | line = options.conn.recv(1024) |
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123 | if line.startswith("PASSWORD") and hashlib.sha1(line.split(' ')[1].strip()).hexdigest() == options.config.password: |
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124 | ret += 1 |
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125 | except Exception, s: |
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126 | dprint("Warning, receiving 1024 bytes failed (%s)." % s) |
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127 | options.conn.close() |
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128 | return False |
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129 | if ret == 2: |
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130 | dprint("Username and password OK.") |
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131 | options.conn.send("PASSWORD OK\n") |
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132 | gobject.io_add_watch(options.conn, gobject.IO_IN, input_handler) |
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133 | return True |
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134 | else: |
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135 | dprint("Username and/or password WRONG.") |
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136 | options.conn.send("PASSWORD KO\n") |
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137 | return False |
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138 | |
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139 | def dprint(msg): |
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140 | from time import strftime |
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141 | global options |
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142 | |
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143 | now = strftime("%Y-%m-%d %H:%M:%S") |
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144 | |
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145 | if options.debug: |
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146 | print now + ": " + msg |
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147 | if options.log: |
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148 | sock = open(options.log, "a") |
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149 | sock.write("%s: %s\n" % (now, msg)) |
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150 | sock.close() |
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151 | |
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152 | class SkypeApi: |
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153 | def __init__(self): |
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154 | self.skype = Skype4Py.Skype() |
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155 | self.skype.OnNotify = self.recv |
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156 | self.skype.Client.Start() |
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157 | |
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158 | def recv(self, msg_text): |
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159 | global options |
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160 | if msg_text == "PONG": |
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161 | return |
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162 | if "\n" in msg_text: |
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163 | # crappy skype prefixes only the first line for |
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164 | # multiline messages so we need to do so for the other |
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165 | # lines, too. this is something like: |
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166 | # 'CHATMESSAGE id BODY first line\nsecond line' -> |
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167 | # 'CHATMESSAGE id BODY first line\nCHATMESSAGE id BODY second line' |
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168 | prefix = " ".join(msg_text.split(" ")[:3]) |
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169 | msg_text = ["%s %s" % (prefix, i) for i in " ".join(msg_text.split(" ")[3:]).split("\n")] |
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170 | else: |
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171 | msg_text = [msg_text] |
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172 | for i in msg_text: |
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173 | # use utf-8 here to solve the following problem: |
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174 | # people use env vars like LC_ALL=en_US (latin1) then |
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175 | # they complain about why can't they receive latin2 |
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176 | # messages.. so here it is: always use utf-8 then |
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177 | # everybody will be happy |
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178 | e = i.encode('UTF-8') |
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179 | dprint('<< ' + e) |
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180 | if options.conn: |
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181 | try: |
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182 | options.conn.send(e + "\n") |
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183 | except Exception, s: |
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184 | dprint("Warning, sending '%s' failed (%s)." % (e, s)) |
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185 | options.conn.close() |
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186 | |
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187 | def send(self, msg_text): |
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188 | if not len(msg_text) or msg_text == "PONG": |
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189 | return |
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190 | try: |
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191 | encoding = locale.getdefaultlocale()[1] |
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192 | if not encoding: |
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193 | raise ValueError |
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194 | e = msg_text.decode(encoding) |
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195 | except ValueError: |
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196 | e = msg_text.decode('UTF-8') |
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197 | dprint('>> ' + e) |
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198 | try: |
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199 | c = self.skype.Command(e, Block=True) |
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200 | self.skype.SendCommand(c) |
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201 | self.recv(c.Reply) |
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202 | except Skype4Py.SkypeError: |
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203 | pass |
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204 | except Skype4Py.SkypeAPIError, s: |
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205 | dprint("Warning, sending '%s' failed (%s)." % (e, s)) |
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206 | |
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207 | class Options: |
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208 | def __init__(self): |
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209 | self.cfgpath = os.path.join(os.environ['HOME'], ".skyped", "skyped.conf") |
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210 | # for backwards compatibility |
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211 | self.syscfgpath = "/usr/local/etc/skyped/skyped.conf" |
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212 | if os.path.exists(self.syscfgpath): |
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213 | self.cfgpath = self.syscfgpath |
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214 | self.daemon = True |
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215 | self.debug = False |
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216 | self.help = False |
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217 | self.host = "0.0.0.0" |
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218 | self.log = None |
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219 | self.port = None |
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220 | self.version = False |
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221 | # well, this is a bit hackish. we store the socket of the last connected client |
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222 | # here and notify it. maybe later notify all connected clients? |
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223 | self.conn = None |
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224 | # this will be read first by the input handler |
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225 | self.buf = None |
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226 | |
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227 | |
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228 | def usage(self, ret): |
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229 | print """Usage: skyped [OPTION]... |
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230 | |
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231 | skyped is a daemon that acts as a tcp server on top of a Skype instance. |
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232 | |
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233 | Options: |
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234 | -c --config path to configuration file (default: %s) |
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235 | -d --debug enable debug messages |
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236 | -h --help this help |
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237 | -H --host set the tcp host (default: %s) |
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238 | -l --log set the log file in background mode (default: none) |
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239 | -n --nofork don't run as daemon in the background |
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240 | -p --port set the tcp port (default: %s) |
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241 | -v --version display version information""" % (self.cfgpath, self.host, self.port) |
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242 | sys.exit(ret) |
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243 | |
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244 | if __name__=='__main__': |
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245 | options = Options() |
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246 | try: |
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247 | opts, args = getopt.getopt(sys.argv[1:], "c:dhH:l:np:v", ["config=", "daemon", "help", "host=", "log=", "nofork", "port=", "version"]) |
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248 | except getopt.GetoptError: |
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249 | options.usage(1) |
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250 | for opt, arg in opts: |
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251 | if opt in ("-c", "--config"): |
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252 | options.cfgpath = arg |
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253 | elif opt in ("-d", "--debug"): |
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254 | options.debug = True |
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255 | elif opt in ("-h", "--help"): |
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256 | options.help = True |
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257 | elif opt in ("-H", "--host"): |
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258 | options.host = arg |
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259 | elif opt in ("-l", "--log"): |
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260 | options.log = arg |
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261 | elif opt in ("-n", "--nofork"): |
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262 | options.daemon = False |
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263 | elif opt in ("-p", "--port"): |
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264 | options.port = int(arg) |
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265 | elif opt in ("-v", "--version"): |
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266 | options.version = True |
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267 | if options.help: |
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268 | options.usage(0) |
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269 | elif options.version: |
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270 | print "skyped %s" % __version__ |
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271 | sys.exit(0) |
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272 | # parse our config |
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273 | if not os.path.exists(options.cfgpath): |
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274 | print "Can't find configuration file at '%s'." % options.cfgpath |
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275 | print "Use the -c option to specify an alternate one." |
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276 | sys.exit(1) |
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277 | options.config = ConfigParser() |
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278 | options.config.read(options.cfgpath) |
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279 | options.config.username = options.config.get('skyped', 'username').split('#')[0] |
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280 | options.config.password = options.config.get('skyped', 'password').split('#')[0] |
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281 | options.config.sslkey = os.path.expanduser(options.config.get('skyped', 'key').split('#')[0]) |
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282 | options.config.sslcert = os.path.expanduser(options.config.get('skyped', 'cert').split('#')[0]) |
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283 | # hack: we have to parse the parameters first to locate the |
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284 | # config file but the -p option should overwrite the value from |
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285 | # the config file |
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286 | try: |
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287 | options.config.port = int(options.config.get('skyped', 'port').split('#')[0]) |
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288 | if not options.port: |
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289 | options.port = options.config.port |
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290 | except NoOptionError: |
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291 | pass |
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292 | if not options.port: |
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293 | options.port = 2727 |
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294 | dprint("Parsing config file '%s' done, username is '%s'." % (options.cfgpath, options.config.username)) |
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295 | if options.daemon: |
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296 | pid = os.fork() |
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297 | if pid == 0: |
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298 | nullin = file(os.devnull, 'r') |
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299 | nullout = file(os.devnull, 'w') |
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300 | os.dup2(nullin.fileno(), sys.stdin.fileno()) |
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301 | os.dup2(nullout.fileno(), sys.stdout.fileno()) |
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302 | os.dup2(nullout.fileno(), sys.stderr.fileno()) |
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303 | else: |
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304 | print 'skyped is started on port %s, pid: %d' % (options.port, pid) |
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305 | sys.exit(0) |
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306 | else: |
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307 | dprint('skyped is started on port %s' % options.port) |
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308 | server(options.host, options.port) |
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309 | try: |
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310 | skype = SkypeApi() |
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311 | except Skype4Py.SkypeAPIError, s: |
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312 | sys.exit("%s. Are you sure you have started Skype?" % s) |
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313 | gobject.timeout_add(2000, skype_idle_handler, skype) |
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314 | gobject.timeout_add(60000, bitlbee_idle_handler, skype) |
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315 | gobject.MainLoop().run() |
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