Mercurial > xib

annotate bridge.py @ 2:f2d0a8b448db

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Fixed interpretation of IRC "namreply" Signed-off-by: Charly COSTE <changaco@changaco.net>
author Charly COSTE <changaco@changaco.net>
date Sun, 16 Aug 2009 16:20:46 +0200
parents 4c842d23d4ce
children 3f651f4fdb4f
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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
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24
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25 class NoSuchParticipantException(Exception): pass
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26
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27
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28 class bridge:
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29 def __init__(self, owner_bot, xmpp_room_jid, irc_room, irc_server, irc_port=6667, mode='normal'):
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30 self.bot = owner_bot
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31 self.irc_server = irc_server
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32 self.irc_port = irc_port
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33 self.irc_room = irc_room
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34 self.participants = []
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35 self.mode = mode
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36
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37 # Join IRC room
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38 self.irc_connection = self.bot.irc.server()
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39 self.irc_connection.nick_callback = self._irc_nick_callback
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40 self.irc_connection.bridge = self
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41 try:
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42 self.irc_connection.connect(irc_server, irc_port, self.bot.nickname)
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43 except:
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44 self.bot.error('Error: joining IRC room failed')
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45 raise
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46
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47 # Join XMPP room
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48 try:
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49 self.xmpp_room = xmpp.muc(xmpp_room_jid)
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50 self.xmpp_room.join(self.bot.xmpp_c, self.bot.nickname)
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51 except:
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52 self.bot.error('Error: joining XMPP room failed')
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53 raise
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54
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55
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56 def _irc_nick_callback(self, error):
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57 if error == None:
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58 self.irc_connection.join(self.irc_room)
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59 self.irc_connection.nick_callback = None
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60 self.bot.error('===> Debug: successfully connected on IRC side of bridge "'+str(self)+'"', debug=True)
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61 elif self.protocol != 'both':
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62 if error == 'nicknameinuse':
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63 self.bot.error('Error: "'+self.bot.nickname+'" is already used in the IRC chan of bridge "'+str(self)+'"')
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64 raise Exception('Error: "'+self.bot.nickname+'" is already used in the IRC chan of bridge "'+str(self)+'"')
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65 elif error == 'erroneusnickname':
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66 self.bot.error('Error: "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"')
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67 raise Exception('Error: "'+self.bot.nickname+'" got "erroneusnickname" on bridge "'+str(self)+'"')
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68
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69
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70 def addParticipant(self, protocol, nickname):
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71 """Add a participant to the bridge."""
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72 if (protocol == 'irc' and nickname == self.irc_connection.get_nickname()) or (protocol == 'xmpp' and nickname == self.xmpp_room.nickname):
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73 raise Exception('cannot add self')
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74 try:
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75 p = self.getParticipant(nickname)
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76 if p.protocol != protocol:
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77 if protocol == 'irc':
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78 p.createDuplicateOnXMPP()
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79 elif protocol == 'xmpp':
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80 p.createDuplicateOnIRC()
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81 else:
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82 raise Exception('Internal Error: bad protocol')
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83 return
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84 except NoSuchParticipantException:
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85 pass
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86 self.bot.error('===> Debug: adding participant "'+nickname+'" from "'+protocol+'" to bridge "'+str(self)+'"', debug=True)
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87 p = participant(self, protocol, nickname)
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88 self.participants.append(p)
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89 return p
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90
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91
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92 def getParticipant(self, nickname):
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93 """Returns a participant object if there is a participant using nickname in the bridge. Raises a NoSuchParticipantException otherwise."""
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94 for participant_ in self.participants:
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95 if participant_.nickname == nickname:
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96 return participant_
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97 raise NoSuchParticipantException('there is no participant using the nickname "'+nickname+'" in this bridge')
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98
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99
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100 def removeParticipant(self, protocol, nickname, leave_message):
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101 """Remove the participant using nickname from the bridge. Raises a NoSuchParticipantException if nickname is not used in the bridge."""
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102 p = self.getParticipant(nickname)
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103 if p.protocol == 'both':
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104 self.bot.error('===> Debug: "'+nickname+'" was on both sides of bridge "'+str(self)+'" but left '+protocol, debug=True)
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105 if protocol == 'xmpp':
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106 p.createDuplicateOnIRC()
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107 elif protocol == 'irc':
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108 p.createDuplicateOnXMPP()
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109 else:
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110 raise Exception('Internal Error: bad protocol')
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111 else:
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112 self.bot.error('===> Debug: removing participant "'+nickname+'" from bridge "'+str(self)+'"', debug=True)
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113 self.participants.remove(p)
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114 p.leave(leave_message)
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115 i = 0
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116 for p in self.participants:
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117 if p.protocol == 'irc':
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118 i += 1
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119 if protocol == 'xmpp' and self.irc_connections_limit >= i:
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120 self.switchToNormalMode()
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121 del p
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122
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123
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124 def say(self, message):
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125 self.xmpp_room.say(message)
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126 self.irc_connection.privmsg(self.irc_room, auto_encode(message))
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127
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128
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129 def switchToNormalMode(self):
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130 if self.mode == 'normal':
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131 return
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132 prev_mode = self.mode
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133 self.mode = 'normal'
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134 for p in self.participants:
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135 if p.protocol == 'xmpp':
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136 p.createDuplicateOnIRC()
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137 elif p.protocol == 'irc' and prev_mode == 'minimal':
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138 p.createDuplicateOnXMPP()
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139 self.bot.error('===> Bridge is switching to normal mode.')
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140 self.say('[Notice] Bridge is switching to normal mode.')
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141
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142
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143 def switchToLimitedMode(self):
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144 if self.mode == 'limited':
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145 return
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146 self.mode = 'limited'
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147 i = 0
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148 for p in self.participants:
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149 if p.protocol == 'xmpp':
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150 i += 1
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151 if p.irc_connection:
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152 p.irc_connection.disconnect('Bridge is switching to limited mode')
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153 p.irc_connection.close()
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154 p.irc_connection = None
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155 self.irc_connections_limit = i
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156 self.bot.error('===> Bridge is switching to limited mode.')
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157 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.')
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158
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159
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160 def __str__(self):
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161 return self.irc_room+'@'+self.irc_server+' <-> '+self.xmpp_room.room_jid
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162
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163
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164 def __del__(self):
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165 # Delete participants objects
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166 for p in self.participants:
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167 p.leave('Removing bridge')
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168 del p
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169 # Leave IRC room
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170 self.irc_connection.quit('Removing bridge')
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171 # Close IRC connection
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172 self.irc_connection.close()
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173 del self.irc_connection
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174 # Leave XMPP room
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175 self.xmpp_room.leave('Removing bridge')