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#!/usr/bin/env python
"""
SleekXMPP: The Sleek XMPP Library
Copyright (C) 2010 Nathanael C. Fritz
This file is part of SleekXMPP.
See the file LICENSE for copying permission.
"""
from __future__ import absolute_import, unicode_literals
from . basexmpp import basexmpp
from xml.etree import cElementTree as ET
from . xmlstream.xmlstream import XMLStream
from . xmlstream.xmlstream import RestartStream
from . xmlstream.matcher.xmlmask import MatchXMLMask
from . xmlstream.matcher.xpath import MatchXPath
from . xmlstream.matcher.many import MatchMany
from . xmlstream.handler.callback import Callback
from . xmlstream.stanzabase import StanzaBase
from . xmlstream import xmlstream as xmlstreammod
from . stanza.message import Message
from . stanza.iq import Iq
import time
import logging
import base64
import sys
import random
import copy
from . import plugins
#from . import stanza
srvsupport = True
try:
import dns.resolver
except ImportError:
srvsupport = False
#class PresenceStanzaType(object):
#
# def fromXML(self, xml):
# self.ptype = xml.get('type')
class ClientXMPP(basexmpp, XMLStream):
"""SleekXMPP's client class. Use only for good, not evil."""
def __init__(self, jid, password, ssl=False, plugin_config = {}, plugin_whitelist=[], escape_quotes=True):
global srvsupport
XMLStream.__init__(self)
self.default_ns = 'jabber:client'
basexmpp.__init__(self)
self.plugin_config = plugin_config
self.escape_quotes = escape_quotes
self.set_jid(jid)
self.plugin_whitelist = plugin_whitelist
self.auto_reconnect = True
self.srvsupport = srvsupport
self.password = password
self.registered_features = []
self.stream_header = """<stream:stream to='%s' xmlns:stream='http://etherx.jabber.org/streams' xmlns='%s' version='1.0'>""" % (self.server,self.default_ns)
self.stream_footer = "</stream:stream>"
#self.map_namespace('http://etherx.jabber.org/streams', 'stream')
#self.map_namespace('jabber:client', '')
self.features = []
#TODO: Use stream state here
self.authenticated = False
self.sessionstarted = False
self.bound = False
self.bindfail = False
self.is_component = False
self.registerHandler(Callback('Stream Features', MatchXPath('{http://etherx.jabber.org/streams}features'), self._handleStreamFeatures, thread=True))
self.registerHandler(Callback('Roster Update', MatchXPath('{%s}iq/{jabber:iq:roster}query' % self.default_ns), self._handleRoster, thread=True))
#self.registerHandler(Callback('Roster Update', MatchXMLMask("<presence xmlns='%s' type='subscribe' />" % self.default_ns), self._handlePresenceSubscribe, thread=True))
self.registerFeature("<starttls xmlns='urn:ietf:params:xml:ns:xmpp-tls' />", self.handler_starttls, True)
self.registerFeature("<mechanisms xmlns='urn:ietf:params:xml:ns:xmpp-sasl' />", self.handler_sasl_auth, True)
self.registerFeature("<bind xmlns='urn:ietf:params:xml:ns:xmpp-bind' />", self.handler_bind_resource)
self.registerFeature("<session xmlns='urn:ietf:params:xml:ns:xmpp-session' />", self.handler_start_session)
#self.registerStanzaExtension('PresenceStanza', PresenceStanzaType)
#self.register_plugins()
def __getitem__(self, key):
if key in self.plugin:
return self.plugin[key]
else:
logging.warning("""Plugin "%s" is not loaded.""" % key)
return False
def get(self, key, default):
return self.plugin.get(key, default)
def connect(self, address=tuple()):
"""Connect to the Jabber Server. Attempts SRV lookup, and if it fails, uses
the JID server."""
if not address or len(address) < 2:
if not self.srvsupport:
logging.debug("Did not supply (address, port) to connect to and no SRV support is installed (http://www.dnspython.org). Continuing to attempt connection, using server hostname from JID.")
else:
logging.debug("Since no address is supplied, attempting SRV lookup.")
try:
answers = dns.resolver.query("_xmpp-client._tcp.%s" % self.server, dns.rdatatype.SRV)
except dns.resolver.NXDOMAIN:
logging.debug("No appropriate SRV record found. Using JID server name.")
else:
# pick a random answer, weighted by priority
# there are less verbose ways of doing this (random.choice() with answer * priority), but I chose this way anyway
# suggestions are welcome
addresses = {}
intmax = 0
priorities = []
for answer in answers:
intmax += answer.priority
addresses[intmax] = (answer.target.to_text()[:-1], answer.port)
priorities.append(intmax) # sure, I could just do priorities = addresses.keys()\n priorities.sort()
picked = random.randint(0, intmax)
for priority in priorities:
if picked <= priority:
address = addresses[priority]
break
if not address:
# if all else fails take server from JID.
address = (self.server, 5222)
result = XMLStream.connect(self, address[0], address[1], use_tls=True)
if result:
self.event("connected")
else:
logging.warning("Failed to connect")
self.event("disconnected")
return result
# overriding reconnect and disconnect so that we can get some events
# should events be part of or required by xmlstream? Maybe that would be cleaner
def reconnect(self):
logging.info("Reconnecting")
self.event("disconnected")
XMLStream.reconnect(self)
def disconnect(self, init=True, close=False, reconnect=False):
self.event("disconnected")
XMLStream.disconnect(self, reconnect)
def registerFeature(self, mask, pointer, breaker = False):
"""Register a stream feature."""
self.registered_features.append((MatchXMLMask(mask), pointer, breaker))
def updateRoster(self, jid, name=None, subscription=None, groups=[]):
"""Add or change a roster item."""
iq = self.Iq().setStanzaValues({'type': 'set'})
iq['roster']['items'] = {jid: {'name': name, 'subscription': subscription, 'groups': groups}}
#self.send(iq, self.Iq().setValues({'id': iq['id']}))
r = iq.send()
return r['type'] == 'result'
def delRosterItem(self, jid):
iq = self.Iq()
iq['type'] = 'set'
iq['roster']['items'] = {jid: {'subscription': 'remove'}}
return iq.send()['type'] == 'result'
def getRoster(self):
"""Request the roster be sent."""
iq = self.Iq().setStanzaValues({'type': 'get'}).enable('roster').send()
self._handleRoster(iq, request=True)
def _handleStreamFeatures(self, features):
self.features = []
for sub in features.xml:
self.features.append(sub.tag)
for subelement in features.xml:
for feature in self.registered_features:
if feature[0].match(subelement):
#if self.maskcmp(subelement, feature[0], True):
if feature[1](subelement) and feature[2]: #if breaker, don't continue
return True
def handler_starttls(self, xml):
if not self.authenticated and self.ssl_support:
self.add_handler("<proceed xmlns='urn:ietf:params:xml:ns:xmpp-tls' />", self.handler_tls_start, name='TLS Proceed', instream=True)
self.sendXML(xml)
return True
else:
logging.warning("The module tlslite is required in to some servers, and has not been found.")
return False
def handler_tls_start(self, xml):
logging.debug("Starting TLS")
if self.startTLS():
raise RestartStream()
def handler_sasl_auth(self, xml):
if '{urn:ietf:params:xml:ns:xmpp-tls}starttls' in self.features:
return False
logging.debug("Starting SASL Auth")
self.add_handler("<success xmlns='urn:ietf:params:xml:ns:xmpp-sasl' />", self.handler_auth_success, name='SASL Sucess', instream=True)
self.add_handler("<failure xmlns='urn:ietf:params:xml:ns:xmpp-sasl' />", self.handler_auth_fail, name='SASL Failure', instream=True)
sasl_mechs = xml.findall('{urn:ietf:params:xml:ns:xmpp-sasl}mechanism')
if len(sasl_mechs):
for sasl_mech in sasl_mechs:
self.features.append("sasl:%s" % sasl_mech.text)
if 'sasl:PLAIN' in self.features:
if sys.version_info < (3,0):
self.send("""<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>%s</auth>""" % base64.b64encode(b'\x00' + bytes(self.username) + b'\x00' + bytes(self.password)).decode('utf-8'))
else:
self.send("""<auth xmlns='urn:ietf:params:xml:ns:xmpp-sasl' mechanism='PLAIN'>%s</auth>""" % base64.b64encode(b'\x00' + bytes(self.username, 'utf-8') + b'\x00' + bytes(self.password, 'utf-8')).decode('utf-8'))
else:
logging.error("No appropriate login method.")
self.disconnect()
#if 'sasl:DIGEST-MD5' in self.features:
# self._auth_digestmd5()
return True
def handler_auth_success(self, xml):
self.authenticated = True
self.features = []
raise RestartStream()
def handler_auth_fail(self, xml):
logging.info("Authentication failed.")
self.disconnect()
self.event("failed_auth")
def handler_bind_resource(self, xml):
logging.debug("Requesting resource: %s" % self.resource)
xml.clear()
iq = self.Iq(stype='set')
if self.resource:
res = ET.Element('resource')
res.text = self.resource
xml.append(res)
iq.append(xml)
response = iq.send()
#response = self.send(iq, self.Iq(sid=iq['id']))
self.set_jid(response.xml.find('{urn:ietf:params:xml:ns:xmpp-bind}bind/{urn:ietf:params:xml:ns:xmpp-bind}jid').text)
self.bound = True
logging.info("Node set to: %s" % self.fulljid)
if "{urn:ietf:params:xml:ns:xmpp-session}session" not in self.features or self.bindfail:
logging.debug("Established Session")
self.sessionstarted = True
self.event("session_start")
def handler_start_session(self, xml):
if self.authenticated and self.bound:
iq = self.makeIqSet(xml)
response = iq.send()
logging.debug("Established Session")
self.sessionstarted = True
self.event("session_start")
else:
#bind probably hasn't happened yet
self.bindfail = True
def _handleRoster(self, iq, request=False):
if iq['type'] == 'set' or (iq['type'] == 'result' and request):
for jid in iq['roster']['items']:
if not jid in self.roster:
self.roster[jid] = {'groups': [], 'name': '', 'subscription': 'none', 'presence': {}, 'in_roster': True}
self.roster[jid].update(iq['roster']['items'][jid])
if iq['type'] == 'set':
self.send(self.Iq().setStanzaValues({'type': 'result', 'id': iq['id']}).enable('roster'))
self.event("roster_update", iq)
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