annotate sat/plugins/plugin_xep_0070.py @ 3162:b5c058c7692e

core (xmpp), plugin android: fixed DNS, SRV handling on Android: Android doesn't have a "/etc/resolv.conf" that Twisted expect. As a result, SRV records can't be checked correctly on connection. To work around that, DNS servers used on Android are checked when necessary (on Android plugin startup and on connectivity change), using some hacks, and Twisted is patched to use them.
author Goffi <goffi@goffi.org>
date Sun, 09 Feb 2020 23:56:42 +0100
parents 559a625a236b
children 524856bd7b19
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rev   line source
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1 #!/usr/bin/env python3
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2
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4 # SAT plugin for managing xep-0070
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5 # Copyright (C) 2009-2016 Geoffrey POUZET (chteufleur@kingpenguin.tk)
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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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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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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 from sat.core.i18n import _, D_
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20 from sat.core.constants import Const as C
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21 from sat.core.log import getLogger
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22 from twisted.words.protocols.jabber import xmlstream
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23 from twisted.words.protocols import jabber
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24
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25 log = getLogger(__name__)
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26 from sat.tools import xml_tools
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28 from wokkel import disco, iwokkel
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29 from zope.interface import implementer
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31 try:
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32 from twisted.words.protocols.xmlstream import XMPPHandler
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33 except ImportError:
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34 from wokkel.subprotocols import XMPPHandler
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36
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37 NS_HTTP_AUTH = "http://jabber.org/protocol/http-auth"
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38
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39 IQ = "iq"
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40 IQ_GET = "/" + IQ + '[@type="get"]'
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41 IQ_HTTP_AUTH_REQUEST = IQ_GET + '/confirm[@xmlns="' + NS_HTTP_AUTH + '"]'
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42
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43 MSG = "message"
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44 MSG_GET = "/" + MSG + '[@type="normal"]'
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45 MSG_HTTP_AUTH_REQUEST = MSG_GET + '/confirm[@xmlns="' + NS_HTTP_AUTH + '"]'
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48 PLUGIN_INFO = {
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49 C.PI_NAME: "XEP-0070 Plugin",
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50 C.PI_IMPORT_NAME: "XEP-0070",
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51 C.PI_TYPE: "XEP",
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52 C.PI_PROTOCOLS: ["XEP-0070"],
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53 C.PI_DEPENDENCIES: [],
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54 C.PI_MAIN: "XEP_0070",
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55 C.PI_HANDLER: "yes",
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56 C.PI_DESCRIPTION: _("""Implementation of HTTP Requests via XMPP"""),
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57 }
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60 class XEP_0070(object):
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61 """
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62 Implementation for XEP 0070.
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63 """
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64
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65 def __init__(self, host):
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66 log.info(_("Plugin XEP_0070 initialization"))
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67 self.host = host
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68 self._dictRequest = dict()
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69
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70 def getHandler(self, client):
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71 return XEP_0070_handler(self, client.profile)
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73 def onHttpAuthRequestIQ(self, iq_elt, client):
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74 """This method is called on confirmation request received (XEP-0070 #4.5)
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75
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76 @param iq_elt: IQ element
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77 @param client: %(doc_client)s
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78 """
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79 log.info(_("XEP-0070 Verifying HTTP Requests via XMPP (iq)"))
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80 self._treatHttpAuthRequest(iq_elt, IQ, client)
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82 def onHttpAuthRequestMsg(self, msg_elt, client):
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83 """This method is called on confirmation request received (XEP-0070 #4.5)
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84
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85 @param msg_elt: message element
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86 @param client: %(doc_client)s
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87 """
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88 log.info(_("XEP-0070 Verifying HTTP Requests via XMPP (message)"))
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89 self._treatHttpAuthRequest(msg_elt, MSG, client)
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90
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91 def _treatHttpAuthRequest(self, elt, stanzaType, client):
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92 elt.handled = True
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93 auth_elt = next(elt.elements(NS_HTTP_AUTH, "confirm"))
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94 auth_id = auth_elt["id"]
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95 auth_method = auth_elt["method"]
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96 auth_url = auth_elt["url"]
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97 self._dictRequest[client] = (auth_id, auth_method, auth_url, stanzaType, elt)
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98 title = D_("Auth confirmation")
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99 message = D_("{auth_url} needs to validate your identity, do you agree?\n"
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100 "Validation code : {auth_id}\n\n"
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101 "Please check that this code is the same as on {auth_url}"
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102 ).format(auth_url=auth_url, auth_id=auth_id)
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103 d = xml_tools.deferConfirm(self.host, message=message, title=title,
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104 profile=client.profile)
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105 d.addCallback(self._authRequestCallback, client)
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106
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107 def _authRequestCallback(self, authorized, client):
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108 try:
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109 auth_id, auth_method, auth_url, stanzaType, elt = self._dictRequest.pop(
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110 client)
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111 except KeyError:
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112 authorized = False
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113
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114 if authorized:
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115 if stanzaType == IQ:
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116 # iq
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117 log.debug(_("XEP-0070 reply iq"))
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118 iq_result_elt = xmlstream.toResponse(elt, "result")
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119 client.send(iq_result_elt)
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120 elif stanzaType == MSG:
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121 # message
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122 log.debug(_("XEP-0070 reply message"))
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123 msg_result_elt = xmlstream.toResponse(elt, "result")
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124 msg_result_elt.addChild(next(elt.elements(NS_HTTP_AUTH, "confirm")))
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125 client.send(msg_result_elt)
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126 else:
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127 log.debug(_("XEP-0070 reply error"))
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128 result_elt = jabber.error.StanzaError("not-authorized").toResponse(elt)
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129 client.send(result_elt)
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130
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131
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132 @implementer(iwokkel.IDisco)
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133 class XEP_0070_handler(XMPPHandler):
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134
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135 def __init__(self, plugin_parent, profile):
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136 self.plugin_parent = plugin_parent
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137 self.host = plugin_parent.host
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138 self.profile = profile
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139
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140 def connectionInitialized(self):
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141 self.xmlstream.addObserver(
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142 IQ_HTTP_AUTH_REQUEST,
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143 self.plugin_parent.onHttpAuthRequestIQ,
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144 client=self.parent,
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145 )
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146 self.xmlstream.addObserver(
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147 MSG_HTTP_AUTH_REQUEST,
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148 self.plugin_parent.onHttpAuthRequestMsg,
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149 client=self.parent,
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150 )
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151
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152 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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153 return [disco.DiscoFeature(NS_HTTP_AUTH)]
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154
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155 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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156 return []