Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0320.py @ 4048:04e21d6c9188

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions: rel 421
author Goffi <goffi@goffi.org>
date Mon, 15 May 2023 17:02:40 +0200
parents
children c23cad65ae99
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
4048
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
1 #!/usr/bin/env python3
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
2
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
3
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
4 # Libervia plugin
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
5 # Copyright (C) 2009-2023 Jérôme Poisson (goffi@goffi.org)
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
6
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
7 # This program is free software: you can redistribute it and/or modify
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
8 # it under the terms of the GNU Affero General Public License as published by
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
9 # the Free Software Foundation, either version 3 of the License, or
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
10 # (at your option) any later version.
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
11
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
12 # This program is distributed in the hope that it will be useful,
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
15 # GNU Affero General Public License for more details.
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
16
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
17 # You should have received a copy of the GNU Affero General Public License
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
19
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
20 from twisted.words.protocols.jabber.xmlstream import XMPPHandler
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
21 from twisted.words.xish import domish
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
22 from wokkel import disco, iwokkel
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
23 from zope.interface import implementer
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
24
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
25 from sat.core.constants import Const as C
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
26 from sat.core.i18n import _
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
27 from sat.core.log import getLogger
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
28
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
29
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
30 log = getLogger(__name__)
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
31
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
32 NS_JINGLE_DTLS = "urn:xmpp:jingle:apps:dtls:0"
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
33
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
34 PLUGIN_INFO = {
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
35 C.PI_NAME: "Use of DTLS-SRTP in Jingle Sessions",
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
36 C.PI_IMPORT_NAME: "XEP-0320",
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
37 C.PI_TYPE: "XEP",
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
38 C.PI_MODES: C.PLUG_MODE_BOTH,
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
39 C.PI_PROTOCOLS: ["XEP-0320"],
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
40 C.PI_DEPENDENCIES: ["XEP-0176"],
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
41 C.PI_RECOMMENDATIONS: [],
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
42 C.PI_MAIN: "XEP_0320",
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
43 C.PI_HANDLER: "yes",
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
44 C.PI_DESCRIPTION: _("""Use of DTLS-SRTP with RTP (for e2ee of A/V calls)"""),
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
45 }
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
46
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
47
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
48 class XEP_0320:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
49 def __init__(self, host):
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
50 log.info(f"plugin {PLUGIN_INFO[C.PI_NAME]!r} initialization")
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
51 host.trigger.add("XEP-0176_parse_transport", self._parse_transport_trigger)
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
52 host.trigger.add("XEP-0176_build_transport", self._build_transport_trigger)
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
53
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
54 def get_handler(self, client):
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
55 return XEP_0320_handler()
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
56
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
57 def _parse_transport_trigger(
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
58 self, transport_elt: domish.Element, ice_data: dict
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
59 ) -> bool:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
60 """Parse the <fingerprint> element"""
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
61 fingerprint_elt = next(
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
62 transport_elt.elements(NS_JINGLE_DTLS, "fingerprint"), None
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
63 )
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
64 if fingerprint_elt is not None:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
65 try:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
66 ice_data["fingerprint"] = {
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
67 "hash": fingerprint_elt["hash"],
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
68 "setup": fingerprint_elt["setup"],
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
69 "fingerprint": str(fingerprint_elt),
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
70 }
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
71 except KeyError as e:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
72 log.warning(
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
73 f"invalid <fingerprint> (attribue {e} is missing): "
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
74 f"{fingerprint_elt.toXml()})"
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
75 )
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
76
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
77 return True
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
78
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
79 def _build_transport_trigger(
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
80 self, tranport_elt: domish.Element, ice_data: dict
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
81 ) -> bool:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
82 """Build the <fingerprint> element if possible"""
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
83 try:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
84 fingerprint_data = ice_data["fingerprint"]
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
85 hash_ = fingerprint_data["hash"]
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
86 setup = fingerprint_data["setup"]
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
87 fingerprint = fingerprint_data["fingerprint"]
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
88 except KeyError:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
89 pass
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
90 else:
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
91 fingerprint_elt = tranport_elt.addElement(
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
92 (NS_JINGLE_DTLS, "fingerprint"), content=fingerprint
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
93 )
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
94 fingerprint_elt["hash"] = hash_
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
95 fingerprint_elt["setup"] = setup
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
96
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
97 return True
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
98
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
99
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
100 @implementer(iwokkel.IDisco)
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
101 class XEP_0320_handler(XMPPHandler):
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
102 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
103 return [disco.DiscoFeature(NS_JINGLE_DTLS)]
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
104
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
105 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
04e21d6c9188 plugin XEP-0320: Use of DTLS-SRTP in Jingle Sessions:
Goffi <goffi@goffi.org>
parents:
diff changeset
106 return []