121 lines
3.9 KiB
Python
121 lines
3.9 KiB
Python
"""
|
|
SleekXMPP: The Sleek XMPP Library
|
|
Copyright (C) 2011 Nathanael C. Fritz
|
|
This file is part of SleekXMPP.
|
|
|
|
See the file LICENSE for copying permission.
|
|
"""
|
|
|
|
import logging
|
|
import hashlib
|
|
import random
|
|
import sys
|
|
|
|
from sleekxmpp.exceptions import IqError, IqTimeout
|
|
from sleekxmpp.stanza import Iq, StreamFeatures
|
|
from sleekxmpp.xmlstream import ElementBase, ET, register_stanza_plugin
|
|
from sleekxmpp.plugins import BasePlugin
|
|
from sleekxmpp.plugins.xep_0078 import stanza
|
|
|
|
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
class XEP_0078(BasePlugin):
|
|
|
|
"""
|
|
XEP-0078 NON-SASL Authentication
|
|
|
|
This XEP is OBSOLETE in favor of using SASL, so DO NOT use this plugin
|
|
unless you are forced to use an old XMPP server implementation.
|
|
"""
|
|
|
|
name = 'xep_0078'
|
|
description = 'XEP-0078: Non-SASL Authentication'
|
|
dependencies = set()
|
|
stanza = stanza
|
|
|
|
def plugin_init(self):
|
|
self.xmpp.register_feature('auth',
|
|
self._handle_auth,
|
|
restart=False,
|
|
order=self.config.get('order', 15))
|
|
|
|
register_stanza_plugin(Iq, stanza.IqAuth)
|
|
register_stanza_plugin(StreamFeatures, stanza.AuthFeature)
|
|
|
|
def _handle_auth(self, features):
|
|
# If we can or have already authenticated with SASL, do nothing.
|
|
if 'mechanisms' in features['features']:
|
|
return False
|
|
if self.xmpp.authenticated:
|
|
return False
|
|
|
|
log.debug("Starting jabber:iq:auth Authentication")
|
|
|
|
# Step 1: Request the auth form
|
|
iq = self.xmpp.Iq()
|
|
iq['type'] = 'get'
|
|
iq['to'] = self.xmpp.boundjid.host
|
|
iq['auth']['username'] = self.xmpp.boundjid.user
|
|
|
|
try:
|
|
resp = iq.send(now=True)
|
|
except IqError:
|
|
log.info("Authentication failed: %s", resp['error']['condition'])
|
|
self.xmpp.event('failed_auth', direct=True)
|
|
self.xmpp.disconnect()
|
|
return True
|
|
except IqTimeout:
|
|
log.info("Authentication failed: %s", 'timeout')
|
|
self.xmpp.event('failed_auth', direct=True)
|
|
self.xmpp.disconnect()
|
|
return True
|
|
|
|
# Step 2: Fill out auth form for either password or digest auth
|
|
iq = self.xmpp.Iq()
|
|
iq['type'] = 'set'
|
|
iq['auth']['username'] = self.xmpp.boundjid.user
|
|
|
|
# A resource is required, so create a random one if necessary
|
|
if self.xmpp.boundjid.resource:
|
|
iq['auth']['resource'] = self.xmpp.boundjid.resource
|
|
else:
|
|
iq['auth']['resource'] = '%s' % random.random()
|
|
|
|
if 'digest' in resp['auth']['fields']:
|
|
log.debug('Authenticating via jabber:iq:auth Digest')
|
|
if sys.version_info < (3, 0):
|
|
stream_id = bytes(self.xmpp.stream_id)
|
|
password = bytes(self.xmpp.password)
|
|
else:
|
|
stream_id = bytes(self.xmpp.stream_id, encoding='utf-8')
|
|
password = bytes(self.xmpp.password, encoding='utf-8')
|
|
|
|
digest = hashlib.sha1(b'%s%s' % (stream_id, password)).hexdigest()
|
|
iq['auth']['digest'] = digest
|
|
else:
|
|
log.warning('Authenticating via jabber:iq:auth Plain.')
|
|
iq['auth']['password'] = self.xmpp.password
|
|
|
|
# Step 3: Send credentials
|
|
try:
|
|
result = iq.send(now=True)
|
|
except IqError as err:
|
|
log.info("Authentication failed")
|
|
self.xmpp.disconnect()
|
|
self.xmpp.event("failed_auth", direct=True)
|
|
except IqTimeout:
|
|
log.info("Authentication failed")
|
|
self.xmpp.disconnect()
|
|
self.xmpp.event("failed_auth", direct=True)
|
|
|
|
self.xmpp.features.add('auth')
|
|
|
|
self.xmpp.authenticated = True
|
|
log.debug("Established Session")
|
|
self.xmpp.sessionstarted = True
|
|
self.xmpp.session_started_event.set()
|
|
self.xmpp.event('session_start')
|
|
|
|
return True
|