libervia-backend: sat/plugins/plugin_xep

annotate sat/plugins/plugin_xep_0420.py @ 3913:944f51f9c2b4

core (xmpp): make `send` a blocking method, fix `sendMessageData` calls: original `send` method is blocking, and it is used as such by Wokkel and thus can't be changed to an async method easily. However, an Async method is necessary to have an async trigger at the very end of the send workflow for end-to-end encryption. To workaround that, `send` is an async method which call `a_send`, an async method which actually does the sending. This way legacy method can still call `send` while `a_send` can be await otherwise. Fix calls to `sendMessageData`: the method now being an `async` one, `ensureDeferred` had to be used in some calls.

author	Goffi <goffi@goffi.org>
date	Sat, 24 Sep 2022 16:31:39 +0200
parents	8289ac1b34f4
children	626629781a53

rev	line source
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	1 #!/usr/bin/env python3
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	2
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	3 # Libervia plugin for Stanza Content Encryption
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	4 # Copyright (C) 2022-2022 Tim Henkes (me@syndace.dev)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	5
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	6 # This program is free software: you can redistribute it and/or modify
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	7 # it under the terms of the GNU Affero General Public License as published by
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	8 # the Free Software Foundation, either version 3 of the License, or
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	9 # (at your option) any later version.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	10
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	11 # This program is distributed in the hope that it will be useful,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	14 # GNU Affero General Public License for more details.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	15
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	16 # You should have received a copy of the GNU Affero General Public License
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	18
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	19 from abc import ABC, abstractmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	20 from datetime import datetime
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	21 import enum
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	22 import secrets
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	23 import string
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	24 from typing import Dict, NamedTuple, Optional, Set, Tuple, cast
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	25
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	26 from lxml import etree
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	27
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	28 from sat.core.constants import Const as C
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	29 from sat.core.i18n import D_
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	30 from sat.core.log import Logger, getLogger
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	31 from sat.core.sat_main import SAT
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	32 from sat.tools.xml_tools import ElementParser
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	33 from sat.plugins.plugin_xep_0033 import NS_ADDRESS
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	34 from sat.plugins.plugin_xep_0082 import XEP_0082
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	35 from sat.plugins.plugin_xep_0334 import NS_HINTS
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	36 from sat.plugins.plugin_xep_0359 import NS_SID
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	37 from sat.plugins.plugin_xep_0380 import NS_EME
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	38 from twisted.words.protocols.jabber import jid
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	39 from twisted.words.xish import domish
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	40
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	41
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	42 __all__ = [ # pylint: disable=unused-variable
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	43 "PLUGIN_INFO",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	44 "NS_SCE",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	45 "XEP_0420",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	46 "ProfileRequirementsNotMet",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	47 "AffixVerificationFailed",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	48 "SCECustomAffix",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	49 "SCEAffixPolicy",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	50 "SCEProfile",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	51 "SCEAffixValues"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	52 ]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	53
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	54
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	55 log = cast(Logger, getLogger(__name__)) # type: ignore[no-untyped-call]
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	56
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	57
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	58 PLUGIN_INFO = {
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	59 C.PI_NAME: "SCE",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	60 C.PI_IMPORT_NAME: "XEP-0420",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	61 C.PI_TYPE: "SEC",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	62 C.PI_PROTOCOLS: [ "XEP-0420" ],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	63 C.PI_DEPENDENCIES: [ "XEP-0334", "XEP-0082" ],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	64 C.PI_RECOMMENDATIONS: [ "XEP-0045", "XEP-0033", "XEP-0359" ],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	65 C.PI_MAIN: "XEP_0420",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	66 C.PI_HANDLER: "no",
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	67 C.PI_DESCRIPTION: D_("Implementation of Stanza Content Encryption"),
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	68 }
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	69
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	70
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	71 NS_SCE = "urn:xmpp:sce:1"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	72
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	73
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	74 class ProfileRequirementsNotMet(Exception):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	75 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	76 Raised by :meth:`XEP_0420.unpack_stanza` in case the requirements formulated by the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	77 profile are not met.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	78 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	79
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	80
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	81 class AffixVerificationFailed(Exception):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	82 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	83 Raised by :meth:`XEP_0420.unpack_stanza` in case of affix verification failure.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	84 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	85
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	86
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	87 class SCECustomAffix(ABC):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	88 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	89 Interface for custom affixes of SCE profiles.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	90 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	91
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	92 @property
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	93 @abstractmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	94 def element_name(self) -> str:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	95 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	96 @return: The name of the affix's XML element.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	97 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	98
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	99 @property
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	100 @abstractmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	101 def element_schema(self) -> str:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	102 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	103 @return: The XML schema definition of the affix element's XML structure, i.e. the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	104 ``<xs:element/>`` schema element. This element will be referenced using
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	105 ``<xs:element ref="{element_name}"/>``.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	106 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	107
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	108 @abstractmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	109 def create(self, stanza: domish.Element) -> domish.Element:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	110 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	111 @param stanza: The stanza element which has been processed by
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	112 :meth:`XEP_0420.pack_stanza`, i.e. all encryptable children have been removed
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	113 and only the root ``<message/>`` or ``<iq/>`` and unencryptable children
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	114 remain. Do not modify.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	115 @return: An affix element to include in the envelope. The element must have the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	116 name :attr:`element_name` and must validate using :attr:`element_schema`.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	117 @raise ValueError: if the affix couldn't be built.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	118 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	119
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	120 @abstractmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	121 def verify(self, stanza: domish.Element, element: domish.Element) -> None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	122 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	123 @param stanza: The stanza element before being processed by
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	124 :meth:`XEP_0420.unpack_stanza`, i.e. all encryptable children have been
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	125 removed and only the root ``<message/>`` or ``<iq/>`` and unencryptable
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	126 children remain. Do not modify.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	127 @param element: The affix element to verify.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	128 @raise AffixVerificationFailed: on verification failure.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	129 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	130
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	131
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	132 @enum.unique
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	133 class SCEAffixPolicy(enum.Enum):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	134 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	135 Policy for the presence of an affix in an SCE envelope.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	136 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	137
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	138 REQUIRED: str = "REQUIRED"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	139 OPTIONAL: str = "OPTIONAL"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	140 NOT_NEEDED: str = "NOT_NEEDED"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	141
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	142
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	143 class SCEProfile(NamedTuple):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	144 # pylint: disable=invalid-name
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	145 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	146 An SCE profile, i.e. the definition which affixes are required, optional or not needed
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	147 at all by an SCE-enabled encryption protocol.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	148 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	149
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	150 rpad_policy: SCEAffixPolicy
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	151 time_policy: SCEAffixPolicy
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	152 to_policy: SCEAffixPolicy
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	153 from_policy: SCEAffixPolicy
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	154 custom_policies: Dict[SCECustomAffix, SCEAffixPolicy]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	155
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	156
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	157 class SCEAffixValues(NamedTuple):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	158 # pylint: disable=invalid-name
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	159 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	160 Structure returned by :meth:`XEP_0420.unpack_stanza` with the parsed/processes values
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	161 of all affixes included in the envelope. For custom affixes, the whole affix element
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	162 is returned.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	163 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	164
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	165 rpad: Optional[str]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	166 timestamp: Optional[datetime]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	167 recipient: Optional[jid.JID]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	168 sender: Optional[jid.JID]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	169 custom: Dict[SCECustomAffix, domish.Element]
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	170
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	171
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	172 ENVELOPE_SCHEMA = """<?xml version="1.0" encoding="utf8"?>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	173 <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	174 targetNamespace="urn:xmpp:sce:1"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	175 xmlns="urn:xmpp:sce:1">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	176
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	177 <xs:element name="envelope">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	178 <xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	179 <xs:all>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	180 <xs:element ref="content"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	181 <xs:element ref="rpad" minOccurs="0"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	182 <xs:element ref="time" minOccurs="0"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	183 <xs:element ref="to" minOccurs="0"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	184 <xs:element ref="from" minOccurs="0"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	185 {custom_affix_references}
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	186 </xs:all>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	187 </xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	188 </xs:element>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	189
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	190 <xs:element name="content">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	191 <xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	192 <xs:sequence>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	193 <xs:any minOccurs="0" maxOccurs="unbounded" processContents="skip"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	194 </xs:sequence>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	195 </xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	196 </xs:element>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	197
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	198 <xs:element name="rpad" type="xs:string"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	199
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	200 <xs:element name="time">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	201 <xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	202 <xs:attribute name="stamp" type="xs:dateTime"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	203 </xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	204 </xs:element>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	205
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	206 <xs:element name="to">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	207 <xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	208 <xs:attribute name="jid" type="xs:string"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	209 </xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	210 </xs:element>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	211
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	212 <xs:element name="from">
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	213 <xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	214 <xs:attribute name="jid" type="xs:string"/>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	215 </xs:complexType>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	216 </xs:element>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	217
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	218 {custom_affix_definitions}
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	219 </xs:schema>
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	220 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	221
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	222
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	223 class XEP_0420: # pylint: disable=invalid-name
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	224 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	225 Implementation of XEP-0420: Stanza Content Encryption under namespace
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	226 ``urn:xmpp:sce:1``.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	227
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	228 This is a passive plugin, i.e. it doesn't hook into any triggers to process stanzas
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	229 actively, but offers API for other plugins to use.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	230 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	231
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	232 # Set of namespaces whose elements are never allowed to be transferred in an encrypted
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	233 # envelope.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	234 MUST_BE_PLAINTEXT_NAMESPACES: Set[str] = {
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	235 NS_HINTS,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	236 NS_SID, # TODO: Not sure whether this ban applies to both stanza-id and origin-id
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	237 NS_ADDRESS,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	238 # Not part of the specification (yet), but just doesn't make sense in an encrypted
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	239 # envelope:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	240 NS_EME
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	241 }
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	242
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	243 # Set of (namespace, element name) tuples that define elements which are never allowed
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	244 # to be transferred in an encrypted envelope. If all elements under a certain
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	245 # namespace are forbidden, the namespace can be added to
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	246 # :attr:`MUST_BE_PLAINTEXT_NAMESPACES` instead.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	247 # Note: only full namespaces are forbidden by the spec for now, the following is for
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	248 # potential future use.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	249 MUST_BE_PLAINTEXT_ELEMENTS: Set[Tuple[str, str]] = set()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	250
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	251 def __init__(self, sat: SAT) -> None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	252 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	253 @param sat: The SAT instance.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	254 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	255
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	256 @staticmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	257 def pack_stanza(profile: SCEProfile, stanza: domish.Element) -> bytes:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	258 """Pack a stanza according to Stanza Content Encryption.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	259
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	260 Removes all elements from the stanza except for a few exceptions that explicitly
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	261 need to be transferred in plaintext, e.g. because they contain hints/instructions
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	262 for the server on how to process the stanza. Together with the affix elements as
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	263 requested by the profile, the removed elements are added to an envelope XML
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	264 structure that builds the plaintext to be encrypted by the SCE-enabled encryption
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	265 scheme. Optional affixes are always added to the structure, i.e. they are treated
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	266 by the packing code as if they were required.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	267
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	268 Once built, the envelope structure is serialized to a byte string and returned for
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	269 the encryption scheme to encrypt and add to the stanza.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	270
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	271 @param profile: The SCE profile, i.e. the definition of affixes to include in the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	272 envelope.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	273 @param stanza: The stanza to process. Will be modified by the call.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	274 @return: The serialized envelope structure that builds the plaintext for the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	275 encryption scheme to process.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	276 @raise ValueError: if the <to/> or <from/> affixes are requested but the stanza
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	277 doesn't have the "to"/"from" attribute set to extract the value from. Can also
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	278 be raised by custom affixes.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	279
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	280 @warning: It is up to the calling code to add a <store/> message processing hint
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	281 if applicable.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	282 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	283
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	284 # Prepare the envelope and content elements
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	285 envelope = domish.Element((NS_SCE, "envelope"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	286 content = envelope.addElement((NS_SCE, "content"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	287
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	288 # Note the serialized byte size of the content element before adding any children
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	289 empty_content_byte_size = len(content.toXml().encode("utf-8"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	290
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	291 # Move elements that are not explicitly forbidden from being encrypted from the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	292 # stanza to the content element.
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	293 for child in list(stanza.elements()):
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	294 if (
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	295 child.uri not in XEP_0420.MUST_BE_PLAINTEXT_NAMESPACES
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	296 and (child.uri, child.name) not in XEP_0420.MUST_BE_PLAINTEXT_ELEMENTS
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	297 ):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	298 # Remove the child from the stanza
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	299 stanza.children.remove(child)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	300
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	301 # A namespace of ``None`` can be used on domish elements to inherit the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	302 # namespace from the parent. When moving elements from the stanza root to
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	303 # the content element, however, we don't want elements to inherit the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	304 # namespace of the content element. Thus, check for elements with ``None``
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	305 # for their namespace and set the namespace to jabber:client, which is the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	306 # namespace of the parent element.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	307 if child.uri is None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	308 child.uri = C.NS_CLIENT
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	309 child.defaultUri = C.NS_CLIENT
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	310
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	311 # Add the child with corrected namespaces to the content element
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	312 content.addChild(child)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	313
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	314 # Add the affixes requested by the profile
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	315 if profile.rpad_policy is not SCEAffixPolicy.NOT_NEEDED:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	316 # The specification defines the rpad affix to contain "[...] a randomly
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	317 # generated sequence of random length between 0 and 200 characters." This
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	318 # implementation differs a bit from the specification in that a minimum size
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	319 # other than 0 is chosen depending on the serialized size of the content
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	320 # element. This is to prevent the scenario where the encrypted content is
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	321 # short and the rpad is also randomly chosen to be short, which could allow
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	322 # guessing the content of a short message. To do so, the rpad length is first
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	323 # chosen to pad the content to at least 53 bytes, then afterwards another 0 to
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	324 # 200 bytes are added. Note that single-byte characters are used by this
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	325 # implementation, thus the number of characters equals the number of bytes.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	326 content_byte_size = len(content.toXml().encode("utf-8"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	327 content_byte_size_diff = content_byte_size - empty_content_byte_size
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	328 rpad_length = max(0, 53 - content_byte_size_diff) + secrets.randbelow(201)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	329 rpad_content = "".join(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	330 secrets.choice(string.digits + string.ascii_letters + string.punctuation)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	331 for __
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	332 in range(rpad_length)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	333 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	334 envelope.addElement((NS_SCE, "rpad"), content=rpad_content)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	335
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	336 if profile.time_policy is not SCEAffixPolicy.NOT_NEEDED:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	337 time_element = envelope.addElement((NS_SCE, "time"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	338 time_element["stamp"] = XEP_0082.format_datetime()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	339
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	340 if profile.to_policy is not SCEAffixPolicy.NOT_NEEDED:
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	341 recipient = stanza.getAttribute("to", None)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	342 if recipient is None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	343 raise ValueError(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	344 "<to/> affix requested, but stanza doesn't have the 'to' attribute"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	345 " set."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	346 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	347
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	348 to_element = envelope.addElement((NS_SCE, "to"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	349 to_element["jid"] = jid.JID(recipient).userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	350
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	351 if profile.from_policy is not SCEAffixPolicy.NOT_NEEDED:
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	352 sender = stanza.getAttribute("from", None)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	353 if sender is None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	354 raise ValueError(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	355 "<from/> affix requested, but stanza doesn't have the 'from'"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	356 " attribute set."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	357 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	358
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	359 from_element = envelope.addElement((NS_SCE, "from"))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	360 from_element["jid"] = jid.JID(sender).userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	361
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	362 for affix, policy in profile.custom_policies.items():
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	363 if policy is not SCEAffixPolicy.NOT_NEEDED:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	364 envelope.addChild(affix.create(stanza))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	365
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	366 return envelope.toXml().encode("utf-8")
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	367
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	368 @staticmethod
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	369 def unpack_stanza(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	370 profile: SCEProfile,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	371 stanza: domish.Element,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	372 envelope_serialized: bytes
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	373 ) -> SCEAffixValues:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	374 """Unpack a stanza packed according to Stanza Content Encryption.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	375
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	376 Parses the serialized envelope as XML, verifies included affixes and makes sure
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	377 the requirements of the profile are met, and restores the stanza by moving
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	378 decrypted elements from the envelope back to the stanza top level.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	379
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	380 @param profile: The SCE profile, i.e. the definition of affixes that have to/may
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	381 be included in the envelope.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	382 @param stanza: The stanza to process. Will be modified by the call.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	383 @param envelope_serialized: The serialized envelope, i.e. the plaintext produced
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	384 by the decryption scheme utilizing SCE.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	385 @return: The parsed and processed values of all affixes that were present on the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	386 envelope, notably including the timestamp.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	387 @raise ValueError: if the serialized envelope element is malformed.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	388 @raise ProfileRequirementsNotMet: if one or more affixes required by the profile
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	389 are missing from the envelope.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	390 @raise AffixVerificationFailed: if an affix included in the envelope fails to
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	391 validate. It doesn't matter whether the affix is required by the profile or
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	392 not, all affixes included in the envelope are validated and cause this
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	393 exception to be raised on failure.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	394
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	395 @warning: It is up to the calling code to verify the timestamp, if returned, since
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	396 the requirements on the timestamp may vary between SCE-enabled protocols.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	397 """
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	398
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	399 try:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	400 envelope_serialized_string = envelope_serialized.decode("utf-8")
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	401 except UnicodeError as e:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	402 raise ValueError("Serialized envelope can't bare parsed as utf-8.") from e
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	403
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	404 custom_affixes = set(profile.custom_policies.keys())
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	405
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	406 # Make sure the envelope adheres to the schema
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	407 parser = etree.XMLParser(schema=etree.XMLSchema(etree.XML(ENVELOPE_SCHEMA.format(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	408 custom_affix_references="".join(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	409 f'<xs:element ref="{custom_affix.element_name}" minOccurs="0"/>'
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	410 for custom_affix
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	411 in custom_affixes
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	412 ),
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	413 custom_affix_definitions="".join(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	414 custom_affix.element_schema
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	415 for custom_affix
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	416 in custom_affixes
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	417 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	418 ).encode("utf-8"))))
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	419
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	420 try:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	421 etree.fromstring(envelope_serialized_string, parser)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	422 except etree.XMLSyntaxError as e:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	423 raise ValueError("Serialized envelope doesn't pass schema validation.") from e
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	424
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	425 # Prepare the envelope and content elements
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	426 envelope = cast(domish.Element, ElementParser()(envelope_serialized_string))
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	427 content = next(envelope.elements(NS_SCE, "content"))
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	428
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	429 # Verify the affixes
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	430 rpad_element = cast(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	431 Optional[domish.Element],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	432 next(envelope.elements(NS_SCE, "rpad"), None)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	433 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	434 time_element = cast(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	435 Optional[domish.Element],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	436 next(envelope.elements(NS_SCE, "time"), None)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	437 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	438 to_element = cast(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	439 Optional[domish.Element],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	440 next(envelope.elements(NS_SCE, "to"), None)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	441 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	442 from_element = cast(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	443 Optional[domish.Element],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	444 next(envelope.elements(NS_SCE, "from"), None)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	445 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	446
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	447 # The rpad doesn't need verification.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	448 rpad_value = None if rpad_element is None else str(rpad_element)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	449
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	450 # The time affix isn't verified other than that the timestamp is parseable.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	451 try:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	452 timestamp_value = None if time_element is None else \
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	453 XEP_0082.parse_datetime(time_element["stamp"])
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	454 except ValueError as e:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	455 raise AffixVerificationFailed("Malformed time affix") from e
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	456
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	457 # The to affix is verified by comparing the to attribute of the stanza with the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	458 # JID referenced by the affix. Note that only bare JIDs are compared as per the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	459 # specification.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	460 recipient_value: Optional[jid.JID] = None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	461 if to_element is not None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	462 recipient_value = jid.JID(to_element["jid"])
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	463
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	464 recipient_actual = stanza.getAttribute("to", None)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	465 if recipient_actual is None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	466 raise AffixVerificationFailed(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	467 "'To' affix is included in the envelope, but the stanza is lacking a"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	468 " 'to' attribute to compare the value to."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	469 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	470
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	471 recipient_actual_bare_jid = jid.JID(recipient_actual).userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	472 recipient_target_bare_jid = recipient_value.userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	473
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	474 if recipient_actual_bare_jid != recipient_target_bare_jid:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	475 raise AffixVerificationFailed(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	476 f"Mismatch between actual and target recipient bare JIDs:"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	477 f" {recipient_actual_bare_jid} vs {recipient_target_bare_jid}."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	478 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	479
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	480 # The from affix is verified by comparing the from attribute of the stanza with
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	481 # the JID referenced by the affix. Note that only bare JIDs are compared as per
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	482 # the specification.
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	483 sender_value: Optional[jid.JID] = None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	484 if from_element is not None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	485 sender_value = jid.JID(from_element["jid"])
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	486
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	487 sender_actual = stanza.getAttribute("from", None)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	488 if sender_actual is None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	489 raise AffixVerificationFailed(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	490 "'From' affix is included in the envelope, but the stanza is lacking"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	491 " a 'from' attribute to compare the value to."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	492 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	493
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	494 sender_actual_bare_jid = jid.JID(sender_actual).userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	495 sender_target_bare_jid = sender_value.userhost()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	496
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	497 if sender_actual_bare_jid != sender_target_bare_jid:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	498 raise AffixVerificationFailed(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	499 f"Mismatch between actual and target sender bare JIDs:"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	500 f" {sender_actual_bare_jid} vs {sender_target_bare_jid}."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	501 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	502
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	503 # Find and verify custom affixes
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	504 custom_values: Dict[SCECustomAffix, domish.Element] = {}
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	505 for affix in custom_affixes:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	506 element_name = affix.element_name
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	507 element = cast(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	508 Optional[domish.Element],
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	509 next(envelope.elements(NS_SCE, element_name), None)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	510 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	511 if element is not None:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	512 affix.verify(stanza, element)
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	513 custom_values[affix] = element
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	514
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	515 # Check whether all affixes required by the profile are present
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	516 rpad_missing = \
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	517 profile.rpad_policy is SCEAffixPolicy.REQUIRED and rpad_element is None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	518 time_missing = \
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	519 profile.time_policy is SCEAffixPolicy.REQUIRED and time_element is None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	520 to_missing = \
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	521 profile.to_policy is SCEAffixPolicy.REQUIRED and to_element is None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	522 from_missing = \
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	523 profile.from_policy is SCEAffixPolicy.REQUIRED and from_element is None
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	524 custom_missing = any(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	525 affix not in custom_values
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	526 for affix, policy
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	527 in profile.custom_policies.items()
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	528 if policy is SCEAffixPolicy.REQUIRED
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	529 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	530
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	531 if rpad_missing or time_missing or to_missing or from_missing or custom_missing:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	532 custom_missing_string = ""
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	533 for custom_affix in custom_affixes:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	534 value = "present" if custom_affix in custom_values else "missing"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	535 custom_missing_string += f", [custom]{custom_affix.element_name}={value}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	536
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	537 raise ProfileRequirementsNotMet(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	538 f"SCE envelope is missing affixes required by the profile {profile}."
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	539 f" Affix presence:"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	540 f" rpad={'missing' if rpad_missing else 'present'}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	541 f", time={'missing' if time_missing else 'present'}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	542 f", to={'missing' if to_missing else 'present'}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	543 f", from={'missing' if from_missing else 'present'}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	544 + custom_missing_string
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	545 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	546
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	547 # Move elements that are not explicitly forbidden from being encrypted from the
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	548 # content element to the stanza.
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	549 for child in list(content.elements()):
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	550 if (
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	551 child.uri in XEP_0420.MUST_BE_PLAINTEXT_NAMESPACES
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	552 or (child.uri, child.name) in XEP_0420.MUST_BE_PLAINTEXT_ELEMENTS
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	553 ):
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	554 log.warning(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	555 f"An element that MUST be transferred in plaintext was found in an"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	556 f" SCE envelope: {child.toXml()}"
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	557 )
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	558 else:
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	559 # Remove the child from the content element
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	560 content.children.remove(child)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	561
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	562 # Add the child to the stanza
3911 8289ac1b34f4 plugin XEP-0384: Fully reworked to adjust to the reworked python-omemo: Syndace <me@syndace.dev> parents: 3877 diff changeset	563 stanza.addChild(child)
3877 00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	564
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	565 return SCEAffixValues(
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	566 rpad_value,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	567 timestamp_value,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	568 recipient_value,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	569 sender_value,
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	570 custom_values
00212260f659 plugin XEP-0420: Implementation of Stanza Content Encryption: Syndace <me@syndace.dev> parents: diff changeset	571 )

Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0420.py @ 3913:944f51f9c2b4