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authorNathan Fritz <nathan@andyet.net>2011-08-10 13:37:49 -0700
committerNathan Fritz <nathan@andyet.net>2011-08-10 13:37:49 -0700
commita189cb8333d5f59caa9015f0ded222696987d957 (patch)
tree467f202bc7f85a4cde85a5add3c372515f18adc3 /sleekxmpp/features/feature_starttls/starttls.py
parent0d4825d3ea0562f305939e653e3d414e70e4aaa8 (diff)
parent156b3200e3b5ad1b2e64eecc48cdc792f7b2ffd9 (diff)
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Merge branch 'develop' of github.com:fritzy/SleekXMPP into develop
Diffstat (limited to 'sleekxmpp/features/feature_starttls/starttls.py')
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diff --git a/sleekxmpp/features/feature_starttls/starttls.py b/sleekxmpp/features/feature_starttls/starttls.py
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+"""
+ 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
+
+from sleekxmpp.stanza import StreamFeatures
+from sleekxmpp.xmlstream import RestartStream, register_stanza_plugin
+from sleekxmpp.xmlstream.matcher import *
+from sleekxmpp.xmlstream.handler import *
+from sleekxmpp.plugins.base import base_plugin
+from sleekxmpp.features.feature_starttls import stanza
+
+
+log = logging.getLogger(__name__)
+
+
+class feature_starttls(base_plugin):
+
+ def plugin_init(self):
+ self.name = "STARTTLS"
+ self.rfc = '6120'
+ self.description = "STARTTLS Stream Feature"
+ self.stanza = stanza
+
+ self.xmpp.register_handler(
+ Callback('STARTTLS Proceed',
+ MatchXPath(stanza.Proceed.tag_name()),
+ self._handle_starttls_proceed,
+ instream=True))
+ self.xmpp.register_feature('starttls',
+ self._handle_starttls,
+ restart=True,
+ order=self.config.get('order', 0))
+
+ self.xmpp.register_stanza(stanza.Proceed)
+ self.xmpp.register_stanza(stanza.Failure)
+ register_stanza_plugin(StreamFeatures, stanza.STARTTLS)
+
+ def _handle_starttls(self, features):
+ """
+ Handle notification that the server supports TLS.
+
+ Arguments:
+ features -- The stream:features element.
+ """
+ if 'starttls' in self.xmpp.features:
+ # We have already negotiated TLS, but the server is
+ # offering it again, against spec.
+ return False
+ elif not self.xmpp.use_tls:
+ return False
+ elif self.xmpp.ssl_support:
+ self.xmpp.send(features['starttls'], now=True)
+ return True
+ else:
+ log.warning("The module tlslite is required to log in" +\
+ " to some servers, and has not been found.")
+ return False
+
+ def _handle_starttls_proceed(self, proceed):
+ """Restart the XML stream when TLS is accepted."""
+ log.debug("Starting TLS")
+ if self.xmpp.start_tls():
+ self.xmpp.features.add('starttls')
+ raise RestartStream()