libervia-backend: sat/plugins/plugin_xep

annotate sat/plugins/plugin_xep_0106.py @ 3104:118d91c932a7

plugin XEP-0384: OMEMO for MUC implementation: - encryption is now allowed for group chats - when an encryption is requested for a MUC, real jids or all occupants are used to encrypt the message - a cache for plain text message sent to MUC is used, because for security reason we can't encrypt message for our own device with OMEMO (that would prevent ratchet and break the prefect forward secrecy). Thus, message sent in MUC are cached for 5 min, and the decrypted version is used when found. We don't send immediately the plain text message to frontends and history because we want to keep the same MUC behaviour as for plain text, and receiving a message means that it was received and sent back by MUC service - <origin-id> is used to identify messages sent by our device - a feedback_jid is now use to use correct entity for feedback message in case of problem: with a room we have to send feedback message to the room and not the the emitter - encryptMessage now only accepts list in the renamed "entity_bare_jids" argument

author	Goffi <goffi@goffi.org>
date	Mon, 30 Dec 2019 20:59:46 +0100 (2019-12-30)
parents	ab2696e34d29
children	9d0df638c8b4

rev	line source
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	1 #!/usr/bin/env python3
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	2 # -- coding: utf-8 --
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	3
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	4 # SAT plugin for Explicit Message Encryption
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	6
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	7 # This program is free software: you can redistribute it and/or modify
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	8 # it under the terms of the GNU Affero General Public License as published by
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	9 # the Free Software Foundation, either version 3 of the License, or
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	10 # (at your option) any later version.
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	11
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	12 # This program is distributed in the hope that it will be useful,
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	15 # GNU Affero General Public License for more details.
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	16
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	17 # You should have received a copy of the GNU Affero General Public License
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	19
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	20 from sat.core.i18n import _
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	21 from sat.core.constants import Const as C
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	22 from sat.core.log import getLogger
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	23 from twisted.words.protocols.jabber import xmlstream
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	24 from zope.interface import implementer
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	25 from wokkel import disco
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	26
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	27 log = getLogger(__name__)
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	28
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	29 PLUGIN_INFO = {
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	30 C.PI_NAME: "JID Escaping",
ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	31 C.PI_IMPORT_NAME: "XEP-0106",
ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	32 C.PI_TYPE: "XEP",
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	33 C.PI_MODES: C.PLUG_MODE_BOTH,
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	34 C.PI_PROTOCOLS: ["XEP-0106"],
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	35 C.PI_DEPENDENCIES: [],
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	36 C.PI_MAIN: "XEP_0106",
ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	37 C.PI_HANDLER: "yes",
ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	38 C.PI_DESCRIPTION: _("""(Un)escape JID to use disallowed chars in local parts"""),
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	39 }
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	40
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	41 NS_JID_ESCAPING = r"jid\20escaping"
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	42 ESCAPE_MAP = {
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	43 ' ': r'\20',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	44 '"': r'\22',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	45 '&': r'\26',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	46 "'": r'\27',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	47 '/': r'\2f',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	48 ':': r'\3a',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	49 '<': r'\3c',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	50 '>': r'\3e',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	51 '@': r'\40',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	52 '\\': r'\5c',
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	53 }
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	54
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	55
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	56 class XEP_0106(object):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	57
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	58 def __init__(self, host):
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	59 self.reverse_map = {v:k for k,v in ESCAPE_MAP.items()}
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	60
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	61 def getHandler(self, client):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	62 return XEP_0106_handler()
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	63
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	64 def escape(self, text):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	65 """Escape text
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	66
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	67 @param text(unicode): text to escape
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	68 @return (unicode): escaped text
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	69 @raise ValueError: text can't be escaped
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	70 """
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	71 if not text or text[0] == ' ' or text[-1] == ' ':
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	72 raise ValueError("text must not be empty, or start or end with a whitespace")
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	73 escaped = []
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	74 for c in text:
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	75 if c in ESCAPE_MAP:
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	76 escaped.append(ESCAPE_MAP[c])
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	77 else:
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	78 escaped.append(c)
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	79 return ''.join(escaped)
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	80
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	81 def unescape(self, escaped):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	82 """Unescape text
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	83
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	84 @param escaped(unicode): text to unescape
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	85 @return (unicode): unescaped text
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	86 @raise ValueError: text can't be unescaped
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	87 """
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	88 if not escaped or escaped.startswith(r'\27') or escaped.endswith(r'\27'):
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	89 raise ValueError("escaped value must not be empty, or start or end with a "
ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	90 "whitespace")
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	91 unescaped = []
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	92 idx = 0
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	93 while idx < len(escaped):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	94 char_seq = escaped[idx:idx+3]
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	95 if char_seq in self.reverse_map:
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	96 unescaped.append(self.reverse_map[char_seq])
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	97 idx += 3
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	98 else:
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	99 unescaped.append(escaped[idx])
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	100 idx += 1
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	101 return ''.join(unescaped)
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	102
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	103
3028 ab2696e34d29 Python 3 port: Goffi <goffi@goffi.org> parents: 2922 diff changeset	104 @implementer(disco.IDisco)
2922 28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	105 class XEP_0106_handler(xmlstream.XMPPHandler):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	106
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	107 def getDiscoInfo(self, requestor, target, nodeIdentifier=""):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	108 return [disco.DiscoFeature(NS_JID_ESCAPING)]
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	109
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	110 def getDiscoItems(self, requestor, target, nodeIdentifier=""):
28c969432557 plugin XEP-0106: jid escaping implementation Goffi <goffi@goffi.org> parents: diff changeset	111 return []

Mercurial > libervia-backend

annotate sat/plugins/plugin_xep_0106.py @ 3104:118d91c932a7