140 lines
5.1 KiB
Python
140 lines
5.1 KiB
Python
import pyotr
|
||
from sleekxmpp.xmlstream.stanzabase import JID
|
||
|
||
import logging
|
||
log = logging.getLogger(__name__)
|
||
|
||
from plugin import BasePlugin
|
||
|
||
import tabs
|
||
from tabs import ConversationTab
|
||
|
||
class Plugin(BasePlugin):
|
||
def init(self):
|
||
self.contacts = {}
|
||
# a dict of {full-JID: OTR object}
|
||
self.add_event_handler('conversation_say_after', self.on_conversation_say)
|
||
self.add_event_handler('conversation_msg', self.on_conversation_msg)
|
||
|
||
self.add_tab_command(ConversationTab, 'otr', self.command_otr,
|
||
usage='<start|end|fpr>',
|
||
help='Start or stop OTR for the current conversation.',
|
||
short='Manage OTR status',
|
||
completion=self.otr_completion)
|
||
ConversationTab.add_information_element('otr', self.display_encryption_status)
|
||
|
||
def cleanup(self):
|
||
ConversationTab.remove_information_element('otr')
|
||
self.del_tab_command(ConversationTab, 'otr')
|
||
|
||
def otr_special(self, tab, typ):
|
||
def helper(msg):
|
||
tab.add_message('%s: %s' % (typ, msg.decode()))
|
||
return helper
|
||
|
||
def otr_on_state_change(self, tab):
|
||
def helper(old, new):
|
||
old = self.otr_state(old)
|
||
new = self.otr_state(new)
|
||
tab.add_message('OTR state has changed from %s to %s' % (old, new))
|
||
return helper
|
||
|
||
def get_otr(self, tab):
|
||
if tab not in self.contacts:
|
||
self.contacts[tab] = pyotr.OTR(on_error=self.otr_special(tab, 'Error'), on_warn=self.otr_special(tab, 'Warn'), on_state_change=self.otr_on_state_change(tab))
|
||
return self.contacts[tab]
|
||
|
||
def on_conversation_say(self, message, tab):
|
||
"""
|
||
Feed the message through the OTR filter
|
||
"""
|
||
to = message['to']
|
||
if not message['body']:
|
||
# there’s nothing to encrypt if this is a chatstate, for example
|
||
return
|
||
otr_state = self.get_otr(tab)
|
||
# Not sure what to do with xhtml bodies, and I don't like them anyway ;)
|
||
del message['xhtml_im']
|
||
say = otr_state.transform_msg(message['body'].encode())
|
||
if say is not None:
|
||
message['body'] = say.decode()
|
||
else:
|
||
del message['body']
|
||
|
||
def on_conversation_msg(self, message, tab):
|
||
"""
|
||
Feed the message through the OTR filter
|
||
"""
|
||
fro = message['from']
|
||
if not message['body']:
|
||
# there’s nothing to decrypt if this is a chatstate, for example
|
||
return
|
||
otr_state = self.get_otr(tab)
|
||
# Not sure what to do with xhtml bodies, and I don't like them anyway ;)
|
||
del message['xhtml_im']
|
||
display, reply = otr_state.handle_msg(message['body'].encode())
|
||
#self.core.information('D: {!r}, R: {!r}'.format(display, reply))
|
||
if display is not None:
|
||
message['body'] = display.decode()
|
||
else:
|
||
del message['body']
|
||
if reply is not None:
|
||
self.otr_say(tab, reply.decode())
|
||
|
||
@staticmethod
|
||
def otr_state(state):
|
||
if state == pyotr.MSG_STATE_PLAINTEXT:
|
||
return 'plaintext'
|
||
elif state == pyotr.MSG_STATE_ENCRYPTED:
|
||
return 'encrypted'
|
||
elif state == pyotr.MSG_STATE_FINISHED:
|
||
return 'finished'
|
||
|
||
def display_encryption_status(self, jid):
|
||
"""
|
||
Returns the status of encryption for the associated jid. This is to be used
|
||
in the ConversationTab’s InfoWin.
|
||
"""
|
||
tab = self.core.get_tab_by_name(jid, tabs.ConversationTab)
|
||
if tab not in self.contacts:
|
||
return ''
|
||
state = self.otr_state(self.contacts[tab].state)
|
||
return ' OTR: %s' % (state,)
|
||
|
||
def otr_say(self, tab, line):
|
||
msg = self.core.xmpp.make_message(tab.get_name())
|
||
msg['type'] = 'chat'
|
||
msg['body'] = line
|
||
msg.send()
|
||
|
||
def command_otr(self, args):
|
||
"""
|
||
A command to start or end OTR encryption
|
||
"""
|
||
args = args.split()
|
||
if not args:
|
||
return self.core.command_help("otr")
|
||
if isinstance(self.core.current_tab(), ConversationTab):
|
||
jid = JID(self.core.current_tab().get_name())
|
||
command = args[0]
|
||
if command == 'start':
|
||
otr_state = self.get_otr(self.core.current_tab())
|
||
self.otr_say(self.core.current_tab(), otr_state.start().decode())
|
||
elif command == 'end':
|
||
otr_state = self.get_otr(self.core.current_tab())
|
||
msg = otr_state.end()
|
||
if msg is not None:
|
||
self.otr_say(self.core.current_tab(), msg.decode())
|
||
elif command == 'fpr':
|
||
otr_state = self.get_otr(self.core.current_tab())
|
||
our = otr_state.our_fpr
|
||
if our:
|
||
our = hex(int.from_bytes(our, 'big'))[2:].ljust(40).upper()
|
||
their = otr_state.their_fpr
|
||
if their:
|
||
their = hex(int.from_bytes(their, 'big'))[2:].ljust(40).upper()
|
||
self.core.current_tab().add_message('Your: %s Their: %s' % (our, their))
|
||
self.core.refresh_window()
|
||
|
||
def otr_completion(self, the_input):
|
||
return the_input.auto_completion(['start', 'fpr', 'end'], '', quotify=False)
|