annotate libervia/backend/plugins/plugin_xep_0070.py @ 4306:94e0968987cd

plugin XEP-0033: code modernisation, improve delivery, data validation: - Code has been rewritten using Pydantic models and `async` coroutines for data validation and cleaner element parsing/generation. - Delivery has been completely rewritten. It now works even if server doesn't support multicast, and send to local multicast service first. Delivering to local multicast service first is due to bad support of XEP-0033 in server (notably Prosody which has an incomplete implementation), and the current impossibility to detect if a sub-domain service handles fully multicast or only for local domains. This is a workaround to have a good balance between backward compatilibity and use of bandwith, and to make it work with the incoming email gateway implementation (the gateway will only deliver to entities of its own domain). - disco feature checking now uses `async` corountines. `host` implementation still use Deferred return values for compatibility with legacy code. rel 450
author Goffi <goffi@goffi.org>
date Thu, 26 Sep 2024 16:12:01 +0200
parents 0d7bb4df2343
children
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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 libervia.backend.core.i18n import _, D_
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20 from libervia.backend.core.constants import Const as C
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21 from libervia.backend.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 libervia.backend.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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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 get_handler(self, client):
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71 return XEP_0070_handler(self, client.profile)
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72
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73 def on_http_auth_request_iq(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._treat_http_auth_request(iq_elt, IQ, client)
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81
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82 def on_http_auth_request_msg(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._treat_http_auth_request(msg_elt, MSG, client)
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90
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91 def _treat_http_auth_request(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_(
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100 "{auth_url} needs to validate your identity, do you agree?\n"
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101 "Validation code : {auth_id}\n\n"
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102 "Please check that this code is the same as on {auth_url}"
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103 ).format(auth_url=auth_url, auth_id=auth_id)
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104 d = xml_tools.defer_confirm(
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105 self.host, message=message, title=title, profile=client.profile
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106 )
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107 d.addCallback(self._auth_request_callback, client)
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108
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109 def _auth_request_callback(self, authorized, client):
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110 try:
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111 auth_id, auth_method, auth_url, stanzaType, elt = self._dictRequest.pop(
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112 client
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113 )
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114 except KeyError:
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115 authorized = False
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116
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117 if authorized:
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118 if stanzaType == IQ:
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2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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119 # iq
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120 log.debug(_("XEP-0070 reply iq"))
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121 iq_result_elt = xmlstream.toResponse(elt, "result")
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122 client.send(iq_result_elt)
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123 elif stanzaType == MSG:
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2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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124 # message
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125 log.debug(_("XEP-0070 reply message"))
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126 msg_result_elt = xmlstream.toResponse(elt, "result")
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127 msg_result_elt.addChild(next(elt.elements(NS_HTTP_AUTH, "confirm")))
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128 client.send(msg_result_elt)
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129 else:
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130 log.debug(_("XEP-0070 reply error"))
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2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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131 result_elt = jabber.error.StanzaError("not-authorized").toResponse(elt)
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132 client.send(result_elt)
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133
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134
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135 @implementer(iwokkel.IDisco)
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136 class XEP_0070_handler(XMPPHandler):
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137
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138 def __init__(self, plugin_parent, profile):
2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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139 self.plugin_parent = plugin_parent
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140 self.host = plugin_parent.host
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141 self.profile = profile
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142
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143 def connectionInitialized(self):
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144 self.xmlstream.addObserver(
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145 IQ_HTTP_AUTH_REQUEST,
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146 self.plugin_parent.on_http_auth_request_iq,
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147 client=self.parent,
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148 )
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149 self.xmlstream.addObserver(
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150 MSG_HTTP_AUTH_REQUEST,
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151 self.plugin_parent.on_http_auth_request_msg,
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152 client=self.parent,
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153 )
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154
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155 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
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2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
Geoffrey POUZET <chteufleur@kingpenguin.tk>
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156 return [disco.DiscoFeature(NS_HTTP_AUTH)]
2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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157
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158 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
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2afd5bd781ef plugin XEP-0070: implementation of XEP-0070 (verifying HTTP request via XMPP)
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159 return []