From d4091dbde641dc9796b51e032ea23a0ba5c1fcbb Mon Sep 17 00:00:00 2001 From: Lance Stout Date: Wed, 3 Aug 2011 17:00:51 -0700 Subject: Integrate a modified version of Dave Cridland's Suelta SASL library. --- sleekxmpp/thirdparty/suelta/mechanisms/plain.py | 61 +++++++++++++++++++++++++ 1 file changed, 61 insertions(+) create mode 100644 sleekxmpp/thirdparty/suelta/mechanisms/plain.py (limited to 'sleekxmpp/thirdparty/suelta/mechanisms/plain.py') diff --git a/sleekxmpp/thirdparty/suelta/mechanisms/plain.py b/sleekxmpp/thirdparty/suelta/mechanisms/plain.py new file mode 100644 index 00000000..ab17095e --- /dev/null +++ b/sleekxmpp/thirdparty/suelta/mechanisms/plain.py @@ -0,0 +1,61 @@ +import sys + +from sleekxmpp.thirdparty.suelta.util import bytes +from sleekxmpp.thirdparty.suelta.sasl import Mechanism, register_mechanism +from sleekxmpp.thirdparty.suelta.exceptions import SASLError, SASLCancelled + + +class PLAIN(Mechanism): + + """ + """ + + def __init__(self, sasl, name): + """ + """ + super(PLAIN, self).__init__(sasl, name) + + if not self.sasl.tls_active(): + if not self.sasl.sec_query(self, '-ENCRYPTION, PLAIN'): + raise SASLCancelled(self.sasl, self) + else: + if not self.sasl.sec_query(self, '+ENCRYPTION, PLAIN'): + raise SASLCancelled(self.sasl, self) + + self.check_values(['username', 'password']) + + def prep(self): + """ + Prepare for processing by deleting the password if + the user has not approved storing it in the clear. + """ + if 'savepass' not in self.values: + if self.sasl.sec_query(self, 'CLEAR-PASSWORD'): + self.values['savepass'] = True + + if 'savepass' not in self.values: + del self.values['password'] + + return True + + def process(self, challenge=None): + """ + Process a challenge request and return the response. + + :param challenge: A challenge issued by the server that + must be answered for authentication. + """ + user = bytes(self.values['username']) + password = bytes(self.values['password']) + return b'\x00' + user + b'\x00' + password + + def okay(self): + """ + Mutual authentication is not supported by PLAIN. + + :returns: ``True`` + """ + return True + + +register_mechanism('PLAIN', 1, PLAIN, use_hashes=False) -- cgit v1.2.3