Mercurial > libervia-backend
annotate libervia/backend/plugins/plugin_xep_0338.py @ 4094:c3b68fdc2de7
component AP gateway: fix handling of XMPP comments authors:
the gateway was supposing that comments where emitted from PEP of author. While this is
the case for most blog posts, it's not for comments. Instead the component is now using
`author_jid` which is retrieved by XEP-0277 plugin, and reject the item if the auhor is
not verified (i.e. if `publisher` attribute is not set by XMPP service).
author | Goffi <goffi@goffi.org> |
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date | Mon, 12 Jun 2023 14:50:43 +0200 |
parents | 4b842c1fb686 |
children | 52a89ddf3087 |
rev | line source |
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1 #!/usr/bin/env python3 |
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2 |
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3 # Libervia plugin |
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4 # Copyright (C) 2009-2023 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 typing import List |
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20 |
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21 from twisted.words.protocols.jabber.xmlstream import XMPPHandler |
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22 from twisted.words.xish import domish |
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23 from wokkel import disco, iwokkel |
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24 from zope.interface import implementer |
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25 |
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26 from libervia.backend.core.constants import Const as C |
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27 from libervia.backend.core.i18n import _ |
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28 from libervia.backend.core.log import getLogger |
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29 from libervia.backend.core.core_types import SatXMPPEntity |
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30 |
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31 log = getLogger(__name__) |
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32 |
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33 NS_JINGLE_GROUPING = "urn:xmpp:jingle:apps:grouping:0" |
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34 NS_RFC_5888 = "urn:ietf:rfc:5888" |
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35 |
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36 PLUGIN_INFO = { |
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37 C.PI_NAME: "Jingle Grouping Framework", |
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38 C.PI_IMPORT_NAME: "XEP-0338", |
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39 C.PI_TYPE: "XEP", |
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40 C.PI_MODES: C.PLUG_MODE_BOTH, |
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41 C.PI_PROTOCOLS: ["XEP-0338"], |
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42 C.PI_DEPENDENCIES: ["XEP-0166", "XEP-0167"], |
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43 C.PI_RECOMMENDATIONS: [], |
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44 C.PI_MAIN: "XEP_0338", |
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45 C.PI_HANDLER: "yes", |
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46 C.PI_DESCRIPTION: _("""Jingle mapping of RFC 5888 SDP Grouping Framework"""), |
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47 } |
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48 |
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49 |
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50 class XEP_0338: |
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51 def __init__(self, host): |
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52 log.info(f"plugin {PLUGIN_INFO[C.PI_NAME]!r} initialization") |
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53 self._j = host.plugins["XEP-0166"] |
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54 host.trigger.add("XEP-0167_parse_sdp_a", self._parse_sdp_a_trigger) |
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55 host.trigger.add( |
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56 "XEP-0167_generate_sdp_session", self._generate_sdp_session_trigger |
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57 ) |
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58 host.trigger.add("XEP-0167_jingle_session_init", self._jingle_session_init_trigger) |
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59 host.trigger.add("XEP-0167_jingle_handler", self._jingle_handler_trigger) |
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60 |
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61 def get_handler(self, client): |
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62 return XEP_0338_handler() |
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63 |
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64 def _parse_sdp_a_trigger( |
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65 self, |
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66 attribute: str, |
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67 parts: List[str], |
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68 call_data: dict, |
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69 metadata: dict, |
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70 media_type: str, |
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71 application_data: dict, |
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72 transport_data: dict, |
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73 ) -> None: |
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74 """Parse "group" attributes""" |
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75 if attribute == "group": |
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76 semantics = parts[0] |
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77 content_names = parts[1:] |
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78 metadata.setdefault("group", {})[semantics] = content_names |
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79 |
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80 def _generate_sdp_session_trigger( |
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81 self, |
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82 session: dict, |
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83 local: bool, |
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84 sdp_lines: List[str], |
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85 ) -> None: |
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86 """Generate "group" attributes""" |
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87 key = "metadata" if local else "peer_metadata" |
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88 group_data = session[key].get("group", {}) |
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89 |
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90 for semantics, content_names in group_data.items(): |
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91 sdp_lines.append(f"a=group:{semantics} {' '.join(content_names)}") |
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92 |
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93 def parse_group_element( |
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94 self, jingle_elt: domish.Element, session: dict |
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95 ) -> None: |
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96 """Parse the <group> and <content> elements""" |
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97 for group_elt in jingle_elt.elements(NS_JINGLE_GROUPING, "group"): |
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98 try: |
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99 metadata = session["peer_metadata"] |
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100 semantics = group_elt["semantics"] |
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101 group_content = metadata.setdefault("group", {})[semantics] = [] |
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102 for content_elt in group_elt.elements(NS_JINGLE_GROUPING, "content"): |
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103 group_content.append(content_elt["name"]) |
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104 except KeyError as e: |
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105 log.warning(f"Error while parsing <group>: {e}\n{group_elt.toXml()}") |
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106 |
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107 def add_group_element( |
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108 self, jingle_elt: domish.Element, session: dict |
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109 ) -> None: |
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110 """Build the <group> and <content> elements if possible""" |
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111 for semantics, content_names in session["metadata"].get("group", {}).items(): |
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112 group_elt = jingle_elt.addElement((NS_JINGLE_GROUPING, "group")) |
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113 group_elt["semantics"] = semantics |
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114 for content_name in content_names: |
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115 content_elt = group_elt.addElement((NS_JINGLE_GROUPING, "content")) |
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116 content_elt["name"] = content_name |
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117 |
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118 def _jingle_session_init_trigger( |
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119 self, |
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120 client: SatXMPPEntity, |
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121 session: dict, |
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122 content_name: str, |
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123 media: str, |
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124 media_data: dict, |
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125 desc_elt: domish.Element, |
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126 ) -> None: |
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127 jingle_elt = session["jingle_elt"] |
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128 self.add_group_element(jingle_elt, session) |
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129 |
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130 def _jingle_handler_trigger( |
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131 self, |
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132 client: SatXMPPEntity, |
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133 action: str, |
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134 session: dict, |
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135 content_name: str, |
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136 desc_elt: domish.Element, |
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137 ) -> None: |
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138 # this is a session metadata, so we only generate it on the first content |
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139 if content_name == next(iter(session["contents"])) and action in ( |
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140 self._j.A_PREPARE_CONFIRMATION, |
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141 self._j.A_SESSION_INITIATE, |
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142 self._j.A_PREPARE_INITIATOR, |
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143 ): |
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144 jingle_elt = session["jingle_elt"] |
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145 self.parse_group_element(jingle_elt, session) |
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146 if action == self._j.A_SESSION_INITIATE: |
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147 self.add_group_element(jingle_elt, session) |
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148 |
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149 |
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150 @implementer(iwokkel.IDisco) |
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151 class XEP_0338_handler(XMPPHandler): |
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152 def getDiscoInfo(self, requestor, target, nodeIdentifier=""): |
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153 return [disco.DiscoFeature(NS_RFC_5888)] |
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154 |
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155 def getDiscoItems(self, requestor, target, nodeIdentifier=""): |
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156 return [] |