Mercurial > libervia-backend
annotate src/plugins/plugin_xep_0085.py @ 1727:68e498b3367e
reverted revision 2ebe66a96d05
author | souliane <souliane@mailoo.org> |
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date | Tue, 08 Dec 2015 16:55:54 +0100 |
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1 #!/usr/bin/python |
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2 # -*- coding: utf-8 -*- |
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3 |
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4 # SAT plugin for Chat State Notifications Protocol (xep-0085) |
1396 | 5 # Copyright (C) 2009, 2010, 2011, 2012, 2013, 2014, 2015 Adrien Cossa (souliane@mailoo.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 Affero General Public License as published by |
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9 # the Free Software Foundation, either version 3 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 Affero 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 Affero General Public License |
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>. |
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19 |
771 | 20 from sat.core.i18n import _ |
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21 from sat.core.constants import Const as C |
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22 from sat.core import exceptions |
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23 from sat.core.log import getLogger |
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24 log = getLogger(__name__) |
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25 from wokkel import disco, iwokkel |
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26 from zope.interface import implements |
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27 from twisted.words.protocols.jabber.jid import JID |
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28 try: |
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29 from twisted.words.protocols.xmlstream import XMPPHandler |
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30 except ImportError: |
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31 from wokkel.subprotocols import XMPPHandler |
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32 from twisted.words.xish import domish |
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33 from twisted.internet import reactor |
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34 from twisted.internet import error as internet_error |
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35 |
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36 NS_XMPP_CLIENT = "jabber:client" |
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37 NS_CHAT_STATES = "http://jabber.org/protocol/chatstates" |
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38 CHAT_STATES = ["active", "inactive", "gone", "composing", "paused"] |
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39 MESSAGE_TYPES = ["chat", "groupchat"] |
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40 PARAM_KEY = "Notifications" |
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41 PARAM_NAME = "Enable chat state notifications" |
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42 ENTITY_KEY = PARAM_KEY + "_" + PARAM_NAME |
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43 DELETE_VALUE = "DELETE" |
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44 |
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45 PLUGIN_INFO = { |
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46 "name": "Chat State Notifications Protocol Plugin", |
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47 "import_name": "XEP-0085", |
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48 "type": "XEP", |
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49 "protocols": ["XEP-0085"], |
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50 "dependencies": [], |
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51 "main": "XEP_0085", |
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52 "handler": "yes", |
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53 "description": _("""Implementation of Chat State Notifications Protocol""") |
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54 } |
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55 |
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56 |
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57 # Describe the internal transitions that are triggered |
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58 # by a timer. Beside that, external transitions can be |
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59 # runned to target the states "active" or "composing". |
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60 # Delay is specified here in seconds. |
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61 TRANSITIONS = { |
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62 "active": {"next_state": "inactive", "delay": 120}, |
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63 "inactive": {"next_state": "gone", "delay": 480}, |
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64 "gone": {"next_state": "", "delay": 0}, |
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65 "composing": {"next_state": "paused", "delay": 30}, |
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66 "paused": {"next_state": "inactive", "delay": 450} |
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67 } |
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68 |
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69 |
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70 class UnknownChatStateException(Exception): |
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71 """ |
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72 This error is raised when an unknown chat state is used. |
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73 """ |
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74 pass |
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75 |
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76 |
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77 class XEP_0085(object): |
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78 """ |
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79 Implementation for XEP 0085 |
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80 """ |
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81 params = """ |
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82 <params> |
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83 <individual> |
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84 <category name="%(category_name)s" label="%(category_label)s"> |
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85 <param name="%(param_name)s" label="%(param_label)s" value="true" type="bool" security="0"/> |
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86 </category> |
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87 </individual> |
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88 </params> |
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89 """ % { |
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90 'category_name': PARAM_KEY, |
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91 'category_label': _(PARAM_KEY), |
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92 'param_name': PARAM_NAME, |
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93 'param_label': _('Enable chat state notifications') |
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94 } |
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95 |
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96 def __init__(self, host): |
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97 log.info(_("Chat State Notifications plugin initialization")) |
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98 self.host = host |
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99 self.map = {} |
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100 |
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101 # parameter value is retrieved before each use |
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102 host.memory.updateParams(self.params) |
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103 |
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104 # triggers from core |
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105 host.trigger.add("MessageReceived", self.messageReceivedTrigger) |
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106 host.trigger.add("sendMessage", self.sendMessageTrigger) |
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107 host.trigger.add("paramUpdateTrigger", self.paramUpdateTrigger) |
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108 |
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109 # args: to_s (jid as string), profile |
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110 host.bridge.addMethod("chatStateComposing", ".plugin", in_sign='ss', |
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111 out_sign='', method=self.chatStateComposing) |
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112 |
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113 # args: from (jid as string), state in CHAT_STATES, profile |
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114 host.bridge.addSignal("chatStateReceived", ".plugin", signature='sss') |
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115 |
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116 def getHandler(self, profile): |
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117 return XEP_0085_handler(self, profile) |
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118 |
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119 def profileDisconnected(self, profile): |
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120 """Eventually send a 'gone' state to all one2one contacts.""" |
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121 if profile not in self.map: |
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122 return |
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123 for to_jid in self.map[profile]: |
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124 # FIXME: the "unavailable" presence stanza is received by to_jid |
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125 # before the chat state, so it will be ignored... find a way to |
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126 # actually defer the disconnection |
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127 self.map[profile][to_jid]._onEvent('gone') |
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128 del self.map[profile] |
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129 |
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130 def updateCache(self, entity_jid, value, profile): |
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131 """Update the entity data of the given profile for one or all contacts. |
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132 Reset the chat state(s) display if the notification has been disabled. |
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133 |
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134 @param entity_jid: contact's JID, or C.ENTITY_ALL to update all contacts. |
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135 @param value: True, False or DELETE_VALUE to delete the entity data |
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136 @param profile: current profile |
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137 """ |
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138 if value == DELETE_VALUE: |
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139 self.host.memory.delEntityDatum(entity_jid, ENTITY_KEY, profile) |
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140 else: |
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141 self.host.memory.updateEntityData(entity_jid, ENTITY_KEY, value, profile_key=profile) |
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142 if not value or value == DELETE_VALUE: |
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143 # reinit chat state UI for this or these contact(s) |
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144 self.host.bridge.chatStateReceived(unicode(entity_jid), "", profile) |
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145 |
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146 def paramUpdateTrigger(self, name, value, category, type_, profile): |
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147 """Reset all the existing chat state entity data associated with this profile after a parameter modification. |
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148 |
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149 @param name: parameter name |
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150 @param value: "true" to activate the notifications, or any other value to delete it |
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151 @param category: parameter category |
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152 @param type_: parameter type |
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153 """ |
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154 if (category, name) == (PARAM_KEY, PARAM_NAME): |
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155 self.updateCache(C.ENTITY_ALL, True if C.bool(value) else DELETE_VALUE, profile=profile) |
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156 return False |
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157 return True |
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158 |
663 | 159 def messageReceivedTrigger(self, message, post_treat, profile): |
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160 """ |
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161 Update the entity cache when we receive a message with body. |
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162 Check for a chat state in the message and signal frontends. |
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163 """ |
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164 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile): |
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165 return True |
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166 |
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167 from_jid = JID(message.getAttribute("from")) |
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168 if self._isMUC(from_jid, profile): |
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169 from_jid = from_jid.userhostJID() |
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170 else: # update entity data for one2one chat |
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171 # assert from_jid.resource # FIXME: assert doesn't work on normal message from server (e.g. server announce), because there is no resource |
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172 try: |
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173 domish.generateElementsNamed(message.elements(), name="body").next() |
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174 try: |
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175 domish.generateElementsNamed(message.elements(), name="active").next() |
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176 # contact enabled Chat State Notifications |
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177 self.updateCache(from_jid, True, profile=profile) |
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178 except StopIteration: |
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179 if message.getAttribute('type') == 'chat': |
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180 # contact didn't enable Chat State Notifications |
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181 self.updateCache(from_jid, False, profile=profile) |
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182 return True |
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183 except StopIteration: |
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184 pass |
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185 |
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186 # send our next "composing" states to any MUC and to the contacts who enabled the feature |
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187 self._chatStateInit(from_jid, message.getAttribute("type"), profile) |
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188 |
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189 state_list = [child.name for child in message.elements() if |
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190 message.getAttribute("type") in MESSAGE_TYPES |
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191 and child.name in CHAT_STATES |
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192 and child.defaultUri == NS_CHAT_STATES] |
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193 for state in state_list: |
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194 # there must be only one state according to the XEP |
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195 if state != 'gone' or message.getAttribute('type') != 'groupchat': |
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196 self.host.bridge.chatStateReceived(message.getAttribute("from"), state, profile) |
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197 break |
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198 return True |
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199 |
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200 def sendMessageTrigger(self, mess_data, pre_xml_treatments, post_xml_treatments, profile): |
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201 """ |
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202 Eventually add the chat state to the message and initiate |
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203 the state machine when sending an "active" state. |
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204 """ |
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205 def treatment(mess_data): |
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206 message = mess_data['xml'] |
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207 to_jid = JID(message.getAttribute("to")) |
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208 if not self._checkActivation(to_jid, forceEntityData=True, profile=profile): |
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209 return mess_data |
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210 try: |
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211 # message with a body always mean active state |
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212 domish.generateElementsNamed(message.elements(), name="body").next() |
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213 message.addElement('active', NS_CHAT_STATES) |
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214 # launch the chat state machine (init the timer) |
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215 if self._isMUC(to_jid, profile): |
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216 to_jid = to_jid.userhostJID() |
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217 self._chatStateActive(to_jid, mess_data["type"], profile) |
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218 except StopIteration: |
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219 if "chat_state" in mess_data["extra"]: |
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220 state = mess_data["extra"].pop("chat_state") |
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221 assert state in CHAT_STATES |
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222 message.addElement(state, NS_CHAT_STATES) |
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223 return mess_data |
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224 |
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225 post_xml_treatments.addCallback(treatment) |
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226 return True |
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227 |
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228 def _isMUC(self, to_jid, profile): |
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229 """Tell if that JID is a MUC or not |
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230 |
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231 @param to_jid (JID): full or bare JID to check |
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232 @param profile (str): %(doc_profile)s |
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233 @return: bool |
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234 """ |
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235 try: |
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236 type_ = self.host.memory.getEntityDatum(to_jid.userhostJID(), 'type', profile) |
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237 if type_ == 'chatroom': # FIXME: should not use disco instead ? |
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238 return True |
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239 except (exceptions.UnknownEntityError, KeyError): |
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240 pass |
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241 return False |
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242 |
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243 def _checkActivation(self, to_jid, forceEntityData, profile): |
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244 """ |
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245 @param to_jid: the contact's full JID (or bare if you know it's a MUC) |
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246 @param forceEntityData: if set to True, a non-existing |
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247 entity data will be considered to be True (and initialized) |
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248 @param: current profile |
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249 @return: True if the notifications should be sent to this JID. |
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250 """ |
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251 # check if the parameter is active |
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252 if not self.host.memory.getParamA(PARAM_NAME, PARAM_KEY, profile_key=profile): |
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253 return False |
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254 # check if notifications should be sent to this contact |
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255 if self._isMUC(to_jid, profile): |
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256 return True |
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257 # FIXME: this assertion crash when we want to send a message to an online bare jid |
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258 # assert to_jid.resource or not self.host.memory.isEntityAvailable(to_jid, profile) # must either have a resource, or talk to an offline contact |
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259 try: |
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260 return self.host.memory.getEntityDatum(to_jid, ENTITY_KEY, profile) |
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261 except (exceptions.UnknownEntityError, KeyError): |
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262 if forceEntityData: |
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263 # enable it for the first time |
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264 self.updateCache(to_jid, True, profile=profile) |
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265 return True |
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266 # wait for the first message before sending states |
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267 return False |
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268 |
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269 def _chatStateInit(self, to_jid, mess_type, profile): |
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270 """ |
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271 Data initialization for the chat state machine. |
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272 |
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273 @param to_jid (JID): full JID for one2one, bare JID for MUC |
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274 @param mess_type (str): "one2one" or "groupchat" |
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275 @param profile (str): %(doc_profile)s |
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276 """ |
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277 if mess_type is None: |
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278 return |
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279 profile_map = self.map.setdefault(profile, {}) |
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280 if to_jid not in profile_map: |
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281 machine = ChatStateMachine(self.host, to_jid, |
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282 mess_type, profile) |
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283 self.map[profile][to_jid] = machine |
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284 |
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285 def _chatStateActive(self, to_jid, mess_type, profile_key): |
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286 """ |
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287 Launch the chat state machine on "active" state. |
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288 |
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289 @param to_jid (JID): full JID for one2one, bare JID for MUC |
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290 @param mess_type (str): "one2one" or "groupchat" |
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291 @param profile (str): %(doc_profile)s |
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292 """ |
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293 profile = self.host.memory.getProfileName(profile_key) |
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294 if profile is None: |
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295 raise exceptions.ProfileUnknownError |
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296 self._chatStateInit(to_jid, mess_type, profile) |
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297 self.map[profile][to_jid]._onEvent("active") |
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298 |
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299 def chatStateComposing(self, to_jid_s, profile_key): |
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300 """Move to the "composing" state when required. |
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301 |
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302 Since this method is called from the front-end, it needs to check the |
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303 values of the parameter "Send chat state notifications" and the entity |
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304 data associated to the target JID. |
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305 |
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306 @param to_jid_s (str): contact full JID as a string |
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307 @param profile_key (str): %(doc_profile_key)s |
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308 """ |
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309 # TODO: try to optimize this method which is called often |
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310 profile = self.host.memory.getProfileName(profile_key) |
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311 if profile is None: |
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312 raise exceptions.ProfileUnknownError |
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313 to_jid = JID(to_jid_s) |
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314 if self._isMUC(to_jid, profile): |
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315 to_jid = to_jid.userhostJID() |
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316 elif not to_jid.resource: |
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317 to_jid.resource = self.host.memory.getMainResource(to_jid, profile) |
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318 if not self._checkActivation(to_jid, forceEntityData=False, profile=profile): |
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319 return |
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320 try: |
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321 self.map[profile][to_jid]._onEvent("composing") |
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322 except (KeyError, AttributeError): |
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323 # no message has been sent/received since the notifications |
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324 # have been enabled, it's better to wait for a first one |
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325 pass |
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326 |
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327 |
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328 class ChatStateMachine(object): |
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329 """ |
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330 This class represents a chat state, between one profile and |
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331 one target contact. A timer is used to move from one state |
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332 to the other. The initialization is done through the "active" |
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333 state which is internally set when a message is sent. The state |
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334 "composing" can be set externally (through the bridge by a |
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335 frontend). Other states are automatically set with the timer. |
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336 """ |
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337 |
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338 def __init__(self, host, to_jid, mess_type, profile): |
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339 """ |
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340 Initialization need to store the target, message type |
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341 and a profile for sending later messages. |
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342 """ |
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343 self.host = host |
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344 self.to_jid = to_jid |
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345 self.mess_type = mess_type |
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346 self.profile = profile |
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347 self.state = None |
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348 self.timer = None |
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349 |
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350 def _onEvent(self, state): |
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351 """ |
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352 Move to the specified state, eventually send the |
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353 notification to the contact (the "active" state is |
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354 automatically sent with each message) and set the timer. |
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355 """ |
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356 assert state in TRANSITIONS |
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357 transition = TRANSITIONS[state] |
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358 assert "next_state" in transition and "delay" in transition |
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359 |
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360 if state != self.state and state != "active": |
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361 if state != 'gone' or self.mess_type != 'groupchat': |
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362 # send a new message without body |
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363 log.debug(u"sending state '{state}' to {jid}".format(state=state, jid=self.to_jid.full())) |
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364 client = self.host.getClient(self.profile) |
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365 mess_data = {'message': None, |
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366 'type': self.mess_type, |
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367 'from': client.jid, |
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368 'to': self.to_jid, |
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369 'subject': None |
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370 } |
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371 self.host.generateMessageXML(mess_data) |
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372 mess_data['xml'].addElement(state, NS_CHAT_STATES) |
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373 client.xmlstream.send(mess_data['xml']) |
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374 |
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375 self.state = state |
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376 try: |
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377 self.timer.cancel() |
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378 except (internet_error.AlreadyCalled, AttributeError): |
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379 pass |
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380 |
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381 if transition["next_state"] and transition["delay"] > 0: |
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382 self.timer = reactor.callLater(transition["delay"], self._onEvent, transition["next_state"]) |
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383 |
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384 |
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385 class XEP_0085_handler(XMPPHandler): |
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386 implements(iwokkel.IDisco) |
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387 |
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388 def __init__(self, plugin_parent, profile): |
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389 self.plugin_parent = plugin_parent |
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390 self.host = plugin_parent.host |
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391 self.profile = profile |
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392 |
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393 def getDiscoInfo(self, requestor, target, nodeIdentifier=''): |
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394 return [disco.DiscoFeature(NS_CHAT_STATES)] |
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395 |
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396 def getDiscoItems(self, requestor, target, nodeIdentifier=''): |
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397 return [] |