Mercurial > xib

annotate bridge.py @ 101:29d3b85c6286

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Minor fixes/improvements Signed-off-by: Charly COSTE <changaco@changaco.net>
author Charly COSTE <changaco@changaco.net>
date Fri, 20 Nov 2009 15:30:07 +0100
parents 6289ac5a2db7
children b3eba9489329
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1 #!/usr/bin/env python
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2 # -*- coding: utf-8 -*-
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3
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4 # This program is free software: you can redistribute it and/or modify
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5 # it under the terms of the GNU General Public License as published by
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6 # the Free Software Foundation, either version 3 of the License, or
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7 # (at your option) any later version.
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8 #
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9 # This program is distributed in the hope that it will be useful,
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10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 # GNU General Public License for more details.
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13 #
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14 # You should have received a copy of the GNU General Public License
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15 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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16
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17
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18 import muc
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19 xmpp = muc.xmpp
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20 del muc
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21 from participant import *
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22 from encoding import *
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23 from irclib import ServerConnection
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24 import traceback
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25 import re
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26 import threading
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29 class NoSuchParticipantException(Exception): pass
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31
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32 class bridge:
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33
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34 _all = 0
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35 _info = 1
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36 _notice = 2
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37 _warning = 3
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38 _error = 4
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39 _nothing = 5
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40 _modes = ['normal', 'limited', 'minimal']
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41
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42
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43 def __init__(self, owner_bot, xmpp_room_jid, irc_room, irc_server, mode, say_level, irc_port=6667):
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44 """Create a new bridge."""
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45 self.bot = owner_bot
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46 self.irc_server = irc_server
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47 self.irc_port = irc_port
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48 self.irc_room = irc_room.lower()
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49 if hasattr(self.__class__, '_'+say_level):
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50 self.say_level = getattr(self.__class__, '_'+say_level)
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51 else:
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52 raise Exception('[Error] "'+say_level+'" is not a correct value for a bridge\'s "say_level" attribute')
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53 self.participants = []
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54 if mode not in self.__class__._modes:
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55 raise Exception('[Error] "'+mode+'" is not a correct value for a bridge\'s "mode" attribute')
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56 self.mode = mode
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57
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58 self.lock = threading.RLock()
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59
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60 # Join XMPP room
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61 try:
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62 self.xmpp_room = xmpp.muc(xmpp_room_jid)
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63 self.xmpp_room.join(self.bot.xmpp_c, self.bot.nickname, callback=self._xmpp_join_callback)
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64 except:
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65 self.bot.error('[Error] joining XMPP room failed')
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66 raise
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68 # Join IRC room
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69 try:
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70 self.irc_connections_limit = -1
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71 self.irc_connection = self.bot.irc.server(irc_server, irc_port, self.bot.nickname)
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72 self.irc_connection.connect(nick_callback=self._irc_nick_callback)
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73 except:
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74 self.bot.error('[Error] joining IRC room failed')
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75 raise
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77 self.bot.error('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode and a say_level of "'+say_level+'"')
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79
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80 def _irc_nick_callback(self, error, arguments=[]):
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81 if error == None:
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82 if self.mode == None:
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83 return
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84 self.irc_connection.join(self.irc_room)
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85 self.bot.error('===> Debug: successfully connected on IRC side of bridge "'+str(self)+'"', debug=True)
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86 self.say('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode', on_xmpp=False)
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87 else:
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88 self.mode = None
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89 if self.xmpp_room.connected == True:
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90 self.say('[Error] failed to connect to the IRC chan, leaving ...', on_irc=False)
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91 try:
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92 if error == 'nicknameinuse':
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93 raise Exception('[Error] "'+self.bot.nickname+'" is already used in the IRC chan or reserved on the IRC server of bridge "'+str(self)+'"')
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94 elif error == 'nickcollision':
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95 raise Exception('[Error] "'+self.bot.nickname+'" is already used or reserved on the IRC server of bridge "'+str(self)+'"')
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96 elif error == 'erroneusnickname':
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97 raise Exception('[Error] "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"')
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98 elif error == 'nicknametoolong':
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99 raise Exception('[Error] "'+self.bot.nickname+'" got "nicknametoolong" on bridge "'+str(self)+'", limit seems to be '+str(arguments[0]))
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100 else:
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101 raise Exception('[Error] unknown error for "'+self.bot.nickname+'" on bridge "'+str(self)+'", limit seems to be '+str(arguments[0]))
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102 except:
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103 traceback.print_exc()
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104 self.bot.error('[Error] failed to connect to the IRC chan of bridge "'+str(self)+'", removing bridge', send_to_admins=True)
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105 self.bot.removeBridge(self)
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106
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107
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108 def _xmpp_join_callback(self, errors):
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109 """Called by muc._xmpp_presence_handler"""
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110 if len(errors) == 0:
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111 if self.mode == None:
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112 return
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113 self.bot.error('===> Debug: succesfully connected on XMPP side of bridge "'+str(self)+'"', debug=True)
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114 self.say('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode', on_irc=False)
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115 else:
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116 self.mode = None
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117 if self.irc_connection.really_connected == True:
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118 self.say('[Error] failed to connect to the XMPP room, leaving ...', on_xmpp=False)
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119 for error in errors:
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120 try:
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121 raise error
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122 except:
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123 traceback.print_exc()
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124 self.bot.error('[Error] failed to connect to the XMPP room of bridge "'+str(self)+'", removing bridge', send_to_admins=True)
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125 self.bot.removeBridge(self)
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126
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127
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128 def addParticipant(self, from_protocol, nickname):
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129 """Add a participant to the bridge."""
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130 if (from_protocol == 'irc' and nickname == self.irc_connection.get_nickname()) or (from_protocol == 'xmpp' and nickname == self.xmpp_room.nickname):
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131 self.bot.error('===> Debug: not adding self ('+self.bot.nickname+') to bridge "'+str(self)+'"', debug=True)
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132 return
0
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133 try:
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134 p = self.getParticipant(nickname)
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135 if p.protocol != from_protocol:
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136 if from_protocol == 'irc' and isinstance(p.irc_connection, ServerConnection) and p.irc_connection.really_connected == True or from_protocol == 'xmpp' and isinstance(p.xmpp_c, xmpp.client.Client) and isinstance(p.muc, xmpp.muc):
72
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137 return
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138 self.bot.error('===> Debug: "'+nickname+'" is on both sides of bridge "'+str(self)+'"', debug=True)
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139 self.say('[Warning] The nickname "'+nickname+'" is used on both sides of the bridge, please avoid that if possible')
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140 if isinstance(p.irc_connection, ServerConnection):
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141 p.irc_connection.close('')
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142 if p.irc_connection != 'both':
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143 p.irc_connection = 'both'
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144 if isinstance(p.muc, xmpp.muc):
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145 p.muc.leave('')
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146 self.bot.close_xmpp_connection(p.nickname)
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147 if p.xmpp_c != 'both':
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148 p.xmpp_c = 'both'
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149 return
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150 except NoSuchParticipantException:
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151 pass
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152 self.lock.acquire()
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153 self.bot.error('===> Debug: adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'"', debug=True)
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154 try:
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155 p = participant(self, from_protocol, nickname)
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156 except IOError:
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157 self.bot.error('===> Debug: IOError while adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'", reconnectiong ...', debug=True)
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158 p.xmpp_c.reconnectAndReauth()
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159 except:
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160 self.bot.error('===> Debug: unknown error while adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'"', debug=True)
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161 traceback.print_exc()
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162 return
0
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163 self.participants.append(p)
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164 self.lock.release()
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165 if self.mode != 'normal' and from_protocol == 'xmpp':
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166 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp'])
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167 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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168 return p
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169
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170
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171 def getParticipant(self, nickname):
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172 """Returns a participant object if there is a participant using nickname in the bridge. Raises a NoSuchParticipantException otherwise."""
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173 self.lock.acquire()
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174 for participant_ in self.participants:
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175 if participant_.nickname == nickname:
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176 self.lock.release()
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177 return participant_
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178 self.lock.release()
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179 raise NoSuchParticipantException('there is no participant using the nickname "'+nickname+'" in this bridge')
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180
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181
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182 def get_participants_nicknames_list(self, protocols=['irc', 'xmpp']):
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183 """Returns a list of the nicknames of the bridge's participants that are connected on the XMPP side."""
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184 self.lock.acquire()
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185 participants_nicknames = []
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186 for p in self.participants:
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187 if p.protocol in protocols:
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diff changeset
188 participants_nicknames.append('"'+p.nickname+'"')
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189 self.lock.release()
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190 return participants_nicknames
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191
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192
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193 def hasParticipant(self, nickname):
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194 try:
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195 self.getParticipant(nickname)
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196 return True
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197 except NoSuchParticipantException:
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198 return False
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199
61491895c607 Added bridge.hasParticipant() and fixed participant.changeNickname()
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200
17
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201 def removeParticipant(self, left_protocol, nickname, leave_message):
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202 """Remove the participant using nickname from the bridge. Raises a NoSuchParticipantException if nickname is not used in the bridge."""
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203
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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204 was_on_both = None
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205 p = self.getParticipant(nickname)
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206 if p.protocol == 'xmpp':
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diff changeset
207 if p.irc_connection == 'both':
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208 was_on_both = True
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diff changeset
209 if left_protocol == 'xmpp':
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diff changeset
210 p.protocol = 'irc'
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diff changeset
211 p.createDuplicateOnXMPP()
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212 elif left_protocol == 'irc':
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213 p.createDuplicateOnIRC()
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diff changeset
214 else:
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diff changeset
215 if left_protocol == 'xmpp':
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diff changeset
216 was_on_both = False
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diff changeset
217 elif left_protocol == 'irc':
6289ac5a2db7 Reconnect when a connection is closed
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parents: 97
diff changeset
218 try:
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diff changeset
219 p.irc_connection.join(self.irc_room)
6289ac5a2db7 Reconnect when a connection is closed
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diff changeset
220 except:
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diff changeset
221 p._close_irc_connection()
6289ac5a2db7 Reconnect when a connection is closed
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diff changeset
222 p.createDuplicateOnIRC()
6289ac5a2db7 Reconnect when a connection is closed
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diff changeset
223 return
17
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diff changeset
224
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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diff changeset
225 elif p.protocol == 'irc':
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parents: 72
diff changeset
226 if p.xmpp_c == 'both':
17
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diff changeset
227 was_on_both = True
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diff changeset
228 if left_protocol == 'irc':
17
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diff changeset
229 p.protocol = 'xmpp'
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diff changeset
230 p.createDuplicateOnIRC()
84
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parents: 72
diff changeset
231 elif left_protocol == 'xmpp':
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diff changeset
232 p.createDuplicateOnXMPP()
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parents: 72
diff changeset
233 else:
100
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diff changeset
234 if left_protocol == 'irc':
6289ac5a2db7 Reconnect when a connection is closed
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parents: 97
diff changeset
235 was_on_both = False
6289ac5a2db7 Reconnect when a connection is closed
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diff changeset
236 elif left_protocol == 'xmpp':
6289ac5a2db7 Reconnect when a connection is closed
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diff changeset
237 if isinstance(p.xmpp_c, xmpp.client.Client):
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parents: 97
diff changeset
238 self.bot.reopen_xmpp_connection(p.xmpp_c)
6289ac5a2db7 Reconnect when a connection is closed
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parents: 97
diff changeset
239 return
17
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parents: 15
diff changeset
240
0
4c842d23d4ce Initial commit, version 0.1
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parents:
diff changeset
241 else:
19
c1b84196c100 Changed format of non-debug error messages, fixed IRC namreply handling, prevented crash when receiving bad XMPP stanza.
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parents: 18
diff changeset
242 raise Exception('[Internal Error] bad protocol')
17
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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parents: 15
diff changeset
243
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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diff changeset
244 if was_on_both == True:
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diff changeset
245 self.bot.error('===> Debug: "'+nickname+'" was on both sides of bridge "'+str(self)+'" but left '+left_protocol, debug=True)
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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parents: 15
diff changeset
246
32a35f7eff70 Rewrote/modified many things, multiple bridges should now work and are preferred over multiple bots.
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parents: 15
diff changeset
247 elif was_on_both == False:
24
4e1f27ea527b First hack at locks for thread safety. Some other minor changes.
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parents: 22
diff changeset
248 self.lock.acquire()
0
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parents:
diff changeset
249 self.bot.error('===> Debug: removing participant "'+nickname+'" from bridge "'+str(self)+'"', debug=True)
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parents:
diff changeset
250 self.participants.remove(p)
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parents:
diff changeset
251 p.leave(leave_message)
17
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parents: 15
diff changeset
252 del p
24
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253 self.lock.release()
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254 if left_protocol == 'xmpp':
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255 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp'])
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256 if self.irc_connections_limit != -1 and self.irc_connections_limit > len(xmpp_participants_nicknames):
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257 self.switchFromLimitedToNormalMode()
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258 if self.mode != 'normal':
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259 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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260 elif left_protocol == 'irc':
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261 if self.mode == 'minimal':
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262 irc_participants_nicknames = self.get_participants_nicknames_list(protocols=['irc'])
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263 self.say('[Info] Participants on IRC: '+' '.join(irc_participants_nicknames), on_irc=False)
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264
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265 else:
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266 self.bot.error('=> Debug: Bad decision tree, p.protocol='+p.protocol+' left_protocol='+left_protocol+'\np.xmpp_c='+str(p.xmpp_c)+'\np.irc_connection='+str(p.irc_connection), debug=True)
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267
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268
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269 def say(self, message, on_irc=True, on_xmpp=True):
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270 """Make the bot say something."""
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271 if message[0] != '[':
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272 raise Exception('[Internal Error] message does not start with "["')
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273 if self.say_level == self.__class__._nothing:
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274 return
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275 level = re.findall('^\[(Info|Notice|Warning|Error)\]', message)
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276 if len(level) == 0:
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277 raise Exception('[Internal Error] unknown message importance "'+re.findall('^\[([^[\]]+)', message)[0]+'"')
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278 level = level[0].lower()
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279 if getattr(self.__class__, '_'+level) < self.say_level:
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280 return
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281 if on_xmpp == True:
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282 self.xmpp_room.say(message)
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283 if on_irc == True:
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284 self.irc_connection.privmsg(self.irc_room, message)
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285
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286
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287 def switchFromLimitedToNormalMode(self):
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288 if self.mode != 'normal-limited':
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289 return
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290 self.bot.error('===> Bridge is switching to normal mode.')
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291 self.say('[Notice] Bridge is switching to normal mode.')
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292 self.mode = 'normal'
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293 for p in self.participants:
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294 if p.protocol == 'xmpp':
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295 p.createDuplicateOnIRC()
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296
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297
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298 def switchFromNormalToLimitedMode(self):
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299 if self.mode != 'normal':
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300 return
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301 self.mode = 'normal-limited'
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302 i = 0
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303 for p in self.participants:
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304 if p.protocol == 'xmpp':
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305 i += 1
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306 if isinstance(self.irc_connection, ServerConnection):
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307 p.irc_connection.close('Bridge is switching to limited mode')
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308 p.irc_connection = None
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309 self.irc_connections_limit = i
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310 self.bot.error('===> Bridge is switching to limited mode. Limit seems to be '+str(self.irc_connections_limit)+' on "'+self.irc_server+'".')
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311 self.say('[Warning] Bridge is switching to limited mode, it means that it will be transparent for XMPP users but not for IRC users, this is due to the IRC servers\' per-IP-address connections\' limit number which seems to be '+str(self.irc_connections_limit)+' on "'+self.irc_server+'".')
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312 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp'])
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313 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False)
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314
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315
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316 def __str__(self):
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317 return self.irc_room+'@'+self.irc_server+' <-> '+self.xmpp_room.room_jid
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318
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319
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320 def __del__(self):
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321 # Delete participants objects
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322 for p in self.participants:
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323 p.leave('Removing bridge')
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324 del p
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325 del self.participants
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326
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327 # Close IRC connection if not used by an other bridge, just leave the room otherwise
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328 self.irc_connection.used_by -= 1
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329 if self.irc_connection.used_by < 1:
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330 self.irc_connection.close('Removing bridge')
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331 else:
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332 self.irc_connection.part(self.irc_room, message='Removing bridge')
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333
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334 # Leave XMPP room
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335 self.xmpp_room.leave('Removing bridge')