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annotate sat/plugins/plugin_xep_0353.py @ 3606:25d3677701e7

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doc: developer documentation explaining storage and pubsub cache
author Goffi <goffi@goffi.org>
date Thu, 29 Jul 2021 22:51:01 +0200
parents 8508fab9bcc2
children 867a15f05476
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rev   line source
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ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
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1 #!/usr/bin/env python3
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2
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3 # SàT plugin for Jingle Message Initiation (XEP-0353)
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4 # Copyright (C) 2009-2021 Jérôme Poisson (goffi@goffi.org)
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5
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6 # This program is free software: you can redistribute it and/or modify
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7 # it under the terms of the GNU Affero General Public License as published by
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8 # the Free Software Foundation, either version 3 of the License, or
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9 # (at your option) any later version.
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10
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11 # This program is distributed in the hope that it will be useful,
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12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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14 # GNU Affero General Public License for more details.
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15
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16 # You should have received a copy of the GNU Affero General Public License
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17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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18
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19 from zope.interface import implementer
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20 from twisted.internet import defer
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21 from twisted.internet import reactor
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22 from twisted.words.protocols.jabber import xmlstream, jid
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23 from twisted.words.xish import domish
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24 from wokkel import disco, iwokkel
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25 from sat.core.i18n import _, D_
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26 from sat.core.constants import Const as C
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27 from sat.core import exceptions
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28 from sat.core.log import getLogger
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29 from sat.tools import utils
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30 from sat.tools import xml_tools
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31
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32 log = getLogger(__name__)
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33
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34
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35 NS_JINGLE_MESSAGE = "urn:xmpp:jingle-message:0"
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36
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37 PLUGIN_INFO = {
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38 C.PI_NAME: "Jingle Message Initiation",
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39 C.PI_IMPORT_NAME: "XEP-0353",
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40 C.PI_TYPE: "XEP",
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41 C.PI_MODES: C.PLUG_MODE_CLIENT,
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42 C.PI_PROTOCOLS: ["XEP-0353"],
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43 C.PI_DEPENDENCIES: ["XEP-0166"],
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44 C.PI_MAIN: "XEP_0353",
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45 C.PI_HANDLER: "yes",
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46 C.PI_DESCRIPTION: _("""Implementation of Jingle Message Initiation"""),
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47 }
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48
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49
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50 class XEP_0353:
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51
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52 def __init__(self, host):
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53 log.info(_("plugin {name} initialization").format(name=PLUGIN_INFO[C.PI_NAME]))
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54 self.host = host
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55 host.registerNamespace("jingle-message", NS_JINGLE_MESSAGE)
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56 self._j = host.plugins["XEP-0166"]
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57 host.trigger.add("XEP-0166_initiate", self._onInitiateTrigger)
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58 host.trigger.add("messageReceived", self._onMessageReceived)
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59
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60 def getHandler(self, client):
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61 return Handler()
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62
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63 def profileConnecting(self, client):
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64 # mapping from session id to deferred used to wait for destinee answer
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65 client._xep_0353_pending_sessions = {}
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66
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67 def buildMessageData(self, client, peer_jid, verb, session_id):
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68 mess_data = {
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69 'from': client.jid,
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70 'to': peer_jid,
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71 'uid': '',
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72 'message': {},
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73 'type': C.MESS_TYPE_CHAT,
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74 'subject': {},
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75 'extra': {}
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76 }
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77 client.generateMessageXML(mess_data)
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78 verb_elt = mess_data["xml"].addElement((NS_JINGLE_MESSAGE, verb))
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79 verb_elt["id"] = session_id
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80 return mess_data
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81
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82 async def _onInitiateTrigger(self, client, session, contents):
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83 # FIXME: check that at least one resource of the peer_jid can handle the feature
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84 peer_jid = session['peer_jid']
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85 if peer_jid.resource:
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86 return True
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87
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88 infos = await self.host.memory.disco.getInfos(client, peer_jid)
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89 categories = {c for c, __ in infos.identities}
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90 if "component" in categories:
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91 # we don't use message initiation with components
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92 return True
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93
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94 if peer_jid.userhostJID() not in client.roster:
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95 # if the contact is not in our roster, we need to send a directed presence
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96 # according to XEP-0353 §3.1
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97 await client.presence.available(peer_jid)
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98
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99 mess_data = self.buildMessageData(client, peer_jid, "propose", session['id'])
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100 for content in contents:
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101 application, app_args, app_kwargs, content_name = self._j.getContentData(
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102 content)
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103 try:
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104 jingleDescriptionElt = application.handler.jingleDescriptionElt
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105 except AttributeError:
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106 log.debug(f"no jingleDescriptionElt set for {application.handler}")
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107 description_elt = domish.Element((content["app_ns"], "description"))
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108 else:
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109 description_elt = await utils.asDeferred(
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110 jingleDescriptionElt,
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111 client, session, content_name, *app_args, **app_kwargs
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112 )
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113 mess_data["xml"].propose.addChild(description_elt)
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114 response_d = defer.Deferred()
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115 # we wait for 2 min before cancelling the session init
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116 response_d.addTimeout(2*60, reactor)
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117 client._xep_0353_pending_sessions[session['id']] = response_d
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118 await client.sendMessageData(mess_data)
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119 try:
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120 accepting_jid = await response_d
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121 except defer.TimeoutError:
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122 log.warning(_(
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123 "Message initiation with {peer_jid} timed out"
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124 ).format(peer_jid=peer_jid))
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125 else:
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126 session["peer_jid"] = accepting_jid
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127 del client._xep_0353_pending_sessions[session['id']]
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128 return True
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129
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130 async def _onMessageReceived(self, client, message_elt, post_treat):
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131 for elt in message_elt.elements():
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132 if elt.uri == NS_JINGLE_MESSAGE:
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Goffi <goffi@goffi.org>
parents:
diff changeset
133 if elt.name == "propose":
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
134 return await self._handlePropose(client, message_elt, elt)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
135 elif elt.name == "retract":
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
136 return self._handleRetract(client, message_elt, elt)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
137 elif elt.name == "proceed":
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
138 return self._handleProceed(client, message_elt, elt)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
139 elif elt.name == "accept":
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
140 return self._handleAccept(client, message_elt, elt)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
141 elif elt.name == "reject":
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
142 return self._handleAccept(client, message_elt, elt)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
143 else:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
144 log.warning(f"invalid element: {elt.toXml}")
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
145 return True
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
146 return True
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
147
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
148 async def _handlePropose(self, client, message_elt, elt):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
149 peer_jid = jid.JID(message_elt["from"])
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
150 session_id = elt["id"]
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
151 if peer_jid.userhostJID() not in client.roster:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
152 app_ns = elt.description.uri
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
153 try:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
154 application = self._j.getApplication(app_ns)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
155 human_name = getattr(application.handler, "human_name", application.name)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
156 except (exceptions.NotFound, AttributeError):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
157 if app_ns.startswith("urn:xmpp:jingle:apps:"):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
158 human_name = app_ns[21:].split(":", 1)[0].replace('-', ' ').title()
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
159 else:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
160 splitted_ns = app_ns.split(':')
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
161 if len(splitted_ns) > 1:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
162 human_name = splitted_ns[-2].replace('- ', ' ').title()
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
163 else:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
164 human_name = app_ns
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
165
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
166 confirm_msg = D_(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
167 "Somebody not in your contact list ({peer_jid}) wants to do a "
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
168 '"{human_name}" session with you, this would leak your presence and '
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
169 "possibly you IP (internet localisation), do you accept?"
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
170 ).format(peer_jid=peer_jid, human_name=human_name)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
171 confirm_title = D_("Invitation from an unknown contact")
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
172 accept = await xml_tools.deferConfirm(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
173 self.host, confirm_msg, confirm_title, profile=client.profile,
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
174 action_extra={
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
175 "meta_type": C.META_TYPE_NOT_IN_ROSTER_LEAK,
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
176 "meta_session_id": session_id,
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
177 "meta_from_jid": peer_jid.full(),
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
178 }
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
179 )
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
180 if not accept:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
181 mess_data = self.buildMessageData(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
182 client, client.jid.userhostJID(), "reject", session_id)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
183 await client.sendMessageData(mess_data)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
184 # we don't sent anything to sender, to avoid leaking presence
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
185 return False
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
186 else:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
187 await client.presence.available(peer_jid)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
188 session_id = elt["id"]
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
189 mess_data = self.buildMessageData(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
190 client, client.jid.userhostJID(), "accept", session_id)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
191 await client.sendMessageData(mess_data)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
192 mess_data = self.buildMessageData(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
193 client, peer_jid, "proceed", session_id)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
194 await client.sendMessageData(mess_data)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
195 return False
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
196
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
197 def _handleRetract(self, client, message_elt, proceed_elt):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
198 log.warning("retract is not implemented yet")
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
199 return False
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
200
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
201 def _handleProceed(self, client, message_elt, proceed_elt):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
202 try:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
203 session_id = proceed_elt["id"]
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
204 except KeyError:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
205 log.warning(f"invalid proceed element in message_elt: {message_elt}")
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
206 return True
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
207 try:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
208 response_d = client._xep_0353_pending_sessions[session_id]
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
209 except KeyError:
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
210 log.warning(
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
211 _("no pending session found with id {session_id}, did it timed out?")
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
212 .format(session_id=session_id)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
213 )
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
214 return True
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
215
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
216 response_d.callback(jid.JID(message_elt["from"]))
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
217 return False
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
218
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
219 def _handleAccept(self, client, message_elt, accept_elt):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
220 pass
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
221
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
222 def _handleReject(self, client, message_elt, accept_elt):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
223 pass
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
224
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
225
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
226 @implementer(iwokkel.IDisco)
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
227 class Handler(xmlstream.XMPPHandler):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
228
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
229 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
230 return [disco.DiscoFeature(NS_JINGLE_MESSAGE)]
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
231
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
232 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
ecdb3728749e plugin XEP-0353: Jingle Message Initiation implementation:
Goffi <goffi@goffi.org>
parents:
diff changeset
233 return []