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|
#! /usr/bin/env python3
# -*- coding: utf-8 -*-
# vim:fenc=utf-8
#
# Copyright © 2018 Maxime “pep” Buquet <pep@bouah.net>
#
# Distributed under terms of the zlib license.
"""
OMEMO Plugin.
"""
import os
import asyncio
import textwrap
from poezio.plugin import BasePlugin
from poezio.tabs import ConversationTab
from poezio.xdg import DATA_HOME
from slixmpp import JID
from slixmpp.plugins.xep_0384.plugin import MissingOwnKey
from typing import List, Optional
import logging
log = logging.getLogger(__name__)
class Plugin(BasePlugin):
def init(self):
self.info = lambda i: self.api.information(i, 'Info')
self.xmpp = self.core.xmpp
data_dir = os.path.join(DATA_HOME, 'omemo')
os.makedirs(data_dir, exist_ok=True)
self.xmpp.register_plugin(
'xep_0384', {
'data_dir': data_dir,
})
self.api.add_command(
'omemo',
self.command_status,
help='Display contextual information',
)
self.api.add_tab_command(
ConversationTab,
'omemo_enable',
self.command_enable,
help='Enable OMEMO encryption',
)
self.api.add_tab_command(
ConversationTab,
'omemo_disable',
self.command_disable,
help='Disable OMEMO encryption',
)
self.api.add_command(
'encrypted_message',
self.send_message,
help='Send OMEMO encrypted message',
)
self.api.add_event_handler(
'conversation_say_after',
self.on_conversation_say_after,
)
self.api.add_event_handler(
'conversation_msg',
self.on_conversation_msg,
)
def command_status(self, _args):
"""Display contextual information depending on currenttab."""
tab = self.api.current_tab()
self.info('OMEMO!')
self.info("My device id: %d" % self.xmpp['xep_0384'].my_device_id())
def command_enable(self, _args):
pass
def command_disable(self, args):
pass
def send_message(self, _args):
asyncio.ensure_future(
self._send_message(
"Hello Encrypted World!",
[JID('some@jid')],
mto=JID('some@jid'),
mtype='chat',
),
)
async def _send_message(
self,
payload: str,
recipients: List[JID],
mto: Optional[JID] = None,
mtype: Optional[str] = 'chat',
) -> None:
encrypted = await self.xmpp['xep_0384'].encrypt_message(payload, recipients)
msg = self.core.xmpp.make_message(mto, mtype=mtype)
msg['body'] = 'This message is encrypted with Legacy OMEMO (eu.siacs.conversations.axolotl)'
msg['eme']['namespace'] = 'eu.siacs.conversations.axolotl'
msg.append(encrypted)
log.debug('BAR: message: %r', msg)
msg.send()
def on_conversation_say_after(self, message, tab):
"""
Outbound messages
"""
# Check encryption status globally and to the contact, if enabled, add
# ['omemo_encrypt'] attribute to message and send. Maybe delete
# ['body'] and tab.add_message ourselves to specify typ=0 so messages
# are not logged.
fromjid = message['from']
self.xmpp['xep_0384'].encrypt_message(message)
def on_conversation_msg(self, message, _tab):
"""
Inbound messages
"""
# Check if encrypted, and if so replace message['body'] with
# plaintext.
self.info('Foo2')
if self.xmpp['xep_0384'].is_encrypted(message):
try:
body = self.xmpp['xep_0384'].decrypt_message(message)
except (MissingOwnKey,):
log.debug("The following message is missing our key;"
"Couldn't decrypt: %r", message)
return None
message['body'] = body.decode("utf8")
return None
|
