Mercurial > xib
annotate bridge.py @ 124:99f3dee1fad7
code cleaning
Signed-off-by: Charly COSTE <changaco@changaco.net>
| author | Charly COSTE <changaco@changaco.net> |
|---|---|
| date | Wed, 13 Jan 2010 23:08:44 +0100 |
| parents | 75a03f10a863 |
| children | efdc038e757a |
| rev | line source |
|---|---|
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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 |
| 124 | 18 import re |
| 19 import threading | |
| 20 import traceback | |
| 21 | |
| 22 from encoding import * | |
| 23 from irclib import ServerConnection | |
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24 import muc |
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25 xmpp = muc.xmpp |
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26 del muc |
| 124 | 27 |
| 28 from participant import Participant | |
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29 |
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30 |
| 124 | 31 class Bridge: |
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32 |
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33 _all = 0 |
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34 _info = 1 |
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35 _notice = 2 |
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36 _warning = 3 |
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37 _error = 4 |
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38 _nothing = 5 |
| 103 | 39 _say_levels = ['all', 'info', 'notice', 'warning', 'error', 'nothing'] |
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118
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40 _modes = ['normal', 'bypass', 'limited', 'minimal'] |
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41 |
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42 |
| 124 | 43 class NoSuchParticipantException(Exception): pass |
| 44 | |
| 45 | |
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46 def __init__(self, owner_bot, xmpp_room_jid, irc_room, irc_server, mode, say_level, irc_port=6667): |
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47 """Create a new bridge.""" |
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48 self.bot = owner_bot |
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49 self.irc_server = irc_server |
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50 self.irc_port = irc_port |
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45
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51 self.irc_room = irc_room.lower() |
| 103 | 52 self.xmpp_room_jid = xmpp_room_jid |
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53 if hasattr(self.__class__, '_'+say_level): |
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54 self.say_level = getattr(self.__class__, '_'+say_level) |
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55 else: |
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56 raise Exception('[Error] "'+say_level+'" is not a correct value for a bridge\'s "say_level" attribute') |
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57 self.participants = [] |
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58 if mode not in self.__class__._modes: |
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59 raise Exception('[Error] "'+mode+'" is not a correct value for a bridge\'s "mode" attribute') |
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60 self.mode = mode |
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61 |
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62 self.lock = threading.RLock() |
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63 |
| 103 | 64 self.init2() |
| 65 | |
| 66 | |
| 67 def init2(self): | |
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68 # Join XMPP room |
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69 try: |
| 103 | 70 self.xmpp_room = xmpp.muc(self.xmpp_room_jid) |
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71 self.xmpp_room.join(self.bot.xmpp_c, self.bot.nickname, callback=self._xmpp_join_callback) |
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72 except: |
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73 self.bot.error('[Error] joining XMPP room failed') |
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74 raise |
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75 |
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76 # Join IRC room |
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77 try: |
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78 self.irc_connections_limit = -1 |
| 103 | 79 self.irc_connection = self.bot.irc.server(self.irc_server, self.irc_port, self.bot.nickname) |
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80 self.irc_connection.connect(nick_callback=self._irc_nick_callback) |
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81 except: |
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82 self.bot.error('[Error] joining IRC room failed') |
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83 raise |
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84 |
| 114 | 85 self.bot.error('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode and a say_level of "'+self.__class__._say_levels[self.say_level]+'"') |
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86 |
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87 |
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88 def _irc_nick_callback(self, error, arguments=[]): |
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89 if error == None: |
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90 if self.mode == None: |
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91 return |
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92 self.irc_connection.join(self.irc_room) |
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93 self.bot.error('===> Debug: successfully connected on IRC side of bridge "'+str(self)+'"', debug=True) |
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94 self.say('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode', on_xmpp=False) |
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95 else: |
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96 self.mode = None |
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97 if self.xmpp_room.connected == True: |
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98 self.say('[Error] failed to connect to the IRC chan, leaving ...', on_irc=False) |
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99 try: |
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100 if error == 'nicknameinuse': |
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101 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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102 elif error == 'nickcollision': |
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103 raise Exception('[Error] "'+self.bot.nickname+'" is already used or reserved on the IRC server of bridge "'+str(self)+'"') |
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104 elif error == 'erroneusnickname': |
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105 raise Exception('[Error] "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"') |
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106 elif error == 'nicknametoolong': |
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107 raise Exception('[Error] "'+self.bot.nickname+'" got "nicknametoolong" on bridge "'+str(self)+'", limit seems to be '+str(arguments[0])) |
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108 else: |
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109 raise Exception('[Error] unknown error for "'+self.bot.nickname+'" on bridge "'+str(self)+'", limit seems to be '+str(arguments[0])) |
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110 except: |
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111 traceback.print_exc() |
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112
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112 self.bot.error('[Error] failed to connect to the IRC chan of bridge "'+str(self)+'", stopping bridge', send_to_admins=True) |
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113 self.stop(message='failed to connect to the IRC chan') |
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114 |
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115 |
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116 def _xmpp_join_callback(self, errors): |
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117 """Called by muc._xmpp_presence_handler""" |
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118 if len(errors) == 0: |
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119 if hasattr(self, 'reconnecting'): |
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120 del self.reconnecting |
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121 if self.mode == None: |
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122 return |
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123 self.bot.error('===> Debug: succesfully connected on XMPP side of bridge "'+str(self)+'"', debug=True) |
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124 self.say('[Notice] bridge "'+str(self)+'" is running in '+self.mode+' mode', on_irc=False) |
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125 else: |
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126 self.mode = None |
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127 if self.irc_connection.really_connected == True: |
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128 self.say('[Error] failed to connect to the XMPP room, leaving ...', on_xmpp=False) |
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129 for error in errors: |
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130 try: |
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131 raise error |
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132 except: |
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133 traceback.print_exc() |
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134 self.bot.error('[Error] failed to connect to the XMPP room of bridge "'+str(self)+'", stopping bridge', send_to_admins=True) |
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135 self.stop(message='failed to connect to the XMPP room') |
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136 |
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137 |
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138 def addParticipant(self, from_protocol, nickname, real_jid=None, irc_id=None): |
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139 """Add a participant to the bridge.""" |
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140 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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141 self.bot.error('===> Debug: not adding self ('+self.bot.nickname+') to bridge "'+str(self)+'"', debug=True) |
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142 return |
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143 try: |
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144 p = self.getParticipant(nickname) |
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145 if p.protocol != from_protocol: |
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146 if from_protocol == 'irc' and isinstance(p.irc_connection, ServerConnection) and p.irc_connection.really_connected == True and p.irc_connection.real_nickname == nickname or from_protocol == 'xmpp' and isinstance(p.xmpp_c, xmpp.client.Client) and isinstance(p.muc, xmpp.muc) and p.xmpp_c.nickname == nickname: |
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147 if irc_id: |
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148 p.irc_connection.irc_id = irc_id |
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149 return p |
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150 p.set_both_sides() |
| 109 | 151 return p |
| 124 | 152 except self.NoSuchParticipantException: |
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153 pass |
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154 |
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155 if nickname == 'ChanServ' and from_protocol == 'irc': |
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156 return |
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157 |
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158 self.lock.acquire() |
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159 self.bot.error('===> Debug: adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'"', debug=True) |
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160 try: |
| 124 | 161 p = Participant(self, from_protocol, nickname, real_jid=real_jid) |
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162 except IOError: |
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163 self.bot.error('===> Debug: IOError while adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'", reconnectiong ...', debug=True) |
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164 p.xmpp_c.reconnectAndReauth() |
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165 except: |
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166 self.bot.error('===> Debug: unknown error while adding participant "'+nickname+'" from "'+from_protocol+'" to bridge "'+str(self)+'"', debug=True) |
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167 traceback.print_exc() |
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168 return |
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169 self.participants.append(p) |
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170 self.lock.release() |
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171 if self.mode not in ['normal', 'bypass']: |
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172 if from_protocol == 'xmpp': |
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173 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp']) |
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174 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False) |
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175 elif self.mode == 'minimal' and from_protocol == 'irc': |
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176 irc_participants_nicknames = self.get_participants_nicknames_list(protocols=['irc']) |
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177 self.say('[Info] Participants on IRC: '+' '.join(irc_participants_nicknames), on_irc=False) |
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178 return p |
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179 |
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180 |
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181 def changeMode(self, new_mode): |
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182 if new_mode == self.mode: |
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183 return 'Mode is already equal to '+self.mode |
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184 |
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185 unhandled = 'Error: unhandled mode changing from '+self.mode+' to '+new_mode |
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186 |
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187 if new_mode in ['normal', 'bypass']: |
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188 |
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189 if self.mode[-7:] == 'limited': |
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190 # From [{normal,bypass}-]limited to {normal,bypass} |
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191 pass # duplicates of XMPP users are created below |
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192 |
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193 elif self.mode == 'minimal': |
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194 # From minimal to {normal,bypass} |
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195 # create duplicates of IRC users, duplicates of XMPP users are created below |
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196 for p in self.participants: |
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197 if p.protocol == 'irc': |
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198 p.createDuplicateOnXMPP() |
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199 |
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200 else: |
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201 # Unhandled mode changing |
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202 return unhandled |
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203 |
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204 # create duplicates of XMPP users |
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205 for p in self.participants: |
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206 if p.protocol == 'xmpp': |
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207 p.createDuplicateOnIRC() |
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208 |
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209 elif new_mode[-7:] == 'limited': |
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210 |
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211 i = 0 |
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212 for p in self.participants: |
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213 if p.protocol == 'xmpp': |
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214 i += 1 |
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215 p._close_irc_connection('Bridge is switching to limited mode') |
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216 |
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217 if new_mode[-8:] == '-limited': |
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218 # to {normal,bypass}-limited |
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219 self.irc_connections_limit = i |
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220 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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221 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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222 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp']) |
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223 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False) |
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224 return |
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225 |
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226 elif new_mode == 'minimal': |
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227 for p in self.participants: |
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228 p.leave('Bridge is switching to limited mode') |
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229 |
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230 else: |
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231 # Unhandled mode changing |
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232 return unhandled |
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233 |
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234 self.mode = new_mode |
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235 self.bot.error('===> Bridge is switching from '+self.mode+' to '+new_mode+' mode.') |
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236 self.say('[Notice] Bridge is switching from '+self.mode+' to '+new_mode+' mode.') |
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237 |
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238 |
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239 def getParticipant(self, nickname): |
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240 """Returns a participant object if there is a participant using nickname in the bridge. Raises a NoSuchParticipantException otherwise.""" |
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241 self.lock.acquire() |
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242 for p in self.participants: |
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243 if nickname in [p.nickname, p.duplicate_nickname]: |
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244 self.lock.release() |
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245 return p |
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246 self.lock.release() |
| 124 | 247 raise self.NoSuchParticipantException('there is no participant using the nickname "'+nickname+'" in this bridge') |
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248 |
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249 |
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250 def get_participants_nicknames_list(self, protocols=['irc', 'xmpp']): |
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251 """Returns a list of the nicknames of the bridge's participants that are connected on the XMPP side.""" |
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252 self.lock.acquire() |
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253 participants_nicknames = [] |
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254 for p in self.participants: |
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255 if p.protocol in protocols: |
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256 participants_nicknames.append('"'+p.nickname+'"') |
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257 self.lock.release() |
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258 return participants_nicknames |
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259 |
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260 |
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261 def hasParticipant(self, nickname): |
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262 try: |
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263 self.getParticipant(nickname) |
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264 return True |
| 124 | 265 except self.NoSuchParticipantException: |
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266 return False |
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267 |
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268 |
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269 def removeParticipant(self, left_protocol, nickname, leave_message): |
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270 """Remove the participant using nickname from the bridge. Raises a NoSuchParticipantException if nickname is not used in the bridge.""" |
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271 |
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272 was_on_both = None |
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273 p = self.getParticipant(nickname) |
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274 if p.protocol == 'xmpp': |
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275 if p.irc_connection == 'both': |
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276 was_on_both = True |
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277 if left_protocol == 'xmpp': |
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278 p.protocol = 'irc' |
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279 p.createDuplicateOnXMPP() |
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280 elif left_protocol == 'irc': |
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281 p.createDuplicateOnIRC() |
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282 else: |
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283 if left_protocol == 'xmpp': |
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284 was_on_both = False |
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285 elif left_protocol == 'irc': |
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286 try: |
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287 p.irc_connection.join(self.irc_room) |
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288 except: |
| 122 | 289 p._close_irc_connection(leave_message) |
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290 p.createDuplicateOnIRC() |
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291 return |
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292 |
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293 elif p.protocol == 'irc': |
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294 if p.xmpp_c == 'both': |
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295 was_on_both = True |
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296 if left_protocol == 'irc': |
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297 p.protocol = 'xmpp' |
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298 p.createDuplicateOnIRC() |
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299 elif left_protocol == 'xmpp': |
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300 p.createDuplicateOnXMPP() |
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301 else: |
|
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302 if left_protocol == 'irc': |
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303 was_on_both = False |
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304 elif left_protocol == 'xmpp': |
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305 if isinstance(p.xmpp_c, xmpp.client.Client): |
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306 self.bot.reopen_xmpp_connection(p.xmpp_c) |
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307 return |
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308 |
|
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309 else: |
|
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310 raise Exception('[Internal Error] bad protocol') |
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311 |
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312 if was_on_both == True: |
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313 self.bot.error('===> Debug: "'+nickname+'" was on both sides of bridge "'+str(self)+'" but left '+left_protocol, debug=True) |
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314 |
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315 elif was_on_both == False: |
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316 self.lock.acquire() |
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317 self.bot.error('===> Debug: removing participant "'+nickname+'" from bridge "'+str(self)+'"', debug=True) |
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318 self.participants.remove(p) |
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319 p.leave(leave_message) |
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320 del p |
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321 self.lock.release() |
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322 if left_protocol == 'xmpp': |
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323 xmpp_participants_nicknames = self.get_participants_nicknames_list(protocols=['xmpp']) |
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324 if self.irc_connections_limit != -1 and self.irc_connections_limit > len(xmpp_participants_nicknames): |
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325 self.changeMode(self.mode[:-8]) |
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326 if self.mode not in ['normal', 'bypass']: |
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327 self.say('[Info] Participants on XMPP: '+' '.join(xmpp_participants_nicknames), on_xmpp=False) |
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328 elif left_protocol == 'irc': |
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329 if self.mode == 'minimal': |
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330 irc_participants_nicknames = self.get_participants_nicknames_list(protocols=['irc']) |
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331 self.say('[Info] Participants on IRC: '+' '.join(irc_participants_nicknames), on_irc=False) |
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332 |
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333 else: |
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334 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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335 |
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336 |
| 103 | 337 def restart(self): |
| 338 """Restart the bridge""" | |
| 339 | |
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105
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340 # Tell admins |
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341 self.bot.error('Restarting bridge '+str(self), send_to_admins=True) |
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342 |
| 103 | 343 # Stop the bridge |
| 344 self.stop(message='Restarting bridge') | |
| 345 | |
| 346 # Recreate the bridge | |
| 347 self.init2() | |
| 348 | |
| 349 | |
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350 def say(self, message, on_irc=True, on_xmpp=True): |
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351 """Make the bot say something.""" |
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352 if message[0] != '[': |
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353 raise Exception('[Internal Error] message does not start with "["') |
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354 if self.say_level == self.__class__._nothing: |
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355 return |
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356 level = re.findall('^\[(Info|Notice|Warning|Error)\]', message) |
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357 if len(level) == 0: |
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358 raise Exception('[Internal Error] unknown message importance "'+re.findall('^\[([^[\]]+)', message)[0]+'"') |
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359 level = level[0].lower() |
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360 if getattr(self.__class__, '_'+level) < self.say_level: |
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801160b4136f
Introduced a bridge's "say" attribute to offer more flexibility in what the bot says.
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parents:
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361 return |
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79b0a7f48a3e
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Charly COSTE <changaco@changaco.net>
parents:
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362 if on_xmpp == True: |
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363 self.xmpp_room.say(message) |
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364 if on_irc == True: |
| 56 | 365 self.irc_connection.privmsg(self.irc_room, message) |
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366 |
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367 |
| 103 | 368 def stop(self, message='Stopping bridge'): |
| 369 """Stop the bridge""" | |
| 370 | |
| 371 # Close IRC connection if not used by an other bridge, just leave the room otherwise | |
| 109 | 372 if isinstance(self.irc_connection, ServerConnection): |
| 373 self.irc_connection.used_by -= 1 | |
| 374 if self.irc_connection.used_by < 1: | |
| 375 self.irc_connection.close(message) | |
| 376 else: | |
| 377 self.irc_connection.part(self.irc_room, message=message) | |
| 378 self.irc_connection = None | |
| 103 | 379 |
| 380 # Leave the MUC | |
| 109 | 381 if isinstance(self.xmpp_room, xmpp.muc): |
| 382 self.xmpp_room.leave(message=message) | |
| 383 self.xmpp_room.__del__() | |
| 384 self.xmpp_room = None | |
| 103 | 385 |
| 386 # Delete participants objects | |
| 387 for p in self.participants: | |
| 388 p.leave(message) | |
| 389 del p | |
| 390 self.participants = [] | |
| 391 | |
| 392 | |
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393 def __str__(self): |
| 103 | 394 return self.irc_room+'@'+self.irc_server+' <-> '+self.xmpp_room_jid |
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395 |
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396 |
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397 def __del__(self): |
| 103 | 398 self.stop(message='Removing bridge') |