61 lines
1.7 KiB
Python
61 lines
1.7 KiB
Python
import sys
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from sleekxmpp.thirdparty.suelta.util import bytes
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from sleekxmpp.thirdparty.suelta.sasl import Mechanism, register_mechanism
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from sleekxmpp.thirdparty.suelta.exceptions import SASLError, SASLCancelled
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class PLAIN(Mechanism):
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"""
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"""
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def __init__(self, sasl, name):
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"""
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"""
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super(PLAIN, self).__init__(sasl, name)
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if not self.sasl.tls_active():
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if not self.sasl.sec_query(self, '-ENCRYPTION, PLAIN'):
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raise SASLCancelled(self.sasl, self)
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else:
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if not self.sasl.sec_query(self, '+ENCRYPTION, PLAIN'):
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raise SASLCancelled(self.sasl, self)
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self.check_values(['username', 'password'])
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def prep(self):
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"""
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Prepare for processing by deleting the password if
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the user has not approved storing it in the clear.
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"""
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if 'savepass' not in self.values:
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if self.sasl.sec_query(self, 'CLEAR-PASSWORD'):
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self.values['savepass'] = True
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if 'savepass' not in self.values:
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del self.values['password']
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return True
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def process(self, challenge=None):
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"""
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Process a challenge request and return the response.
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:param challenge: A challenge issued by the server that
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must be answered for authentication.
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"""
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user = bytes(self.values['username'])
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password = bytes(self.values['password'])
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return b'\x00' + user + b'\x00' + password
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def okay(self):
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"""
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Mutual authentication is not supported by PLAIN.
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:returns: ``True``
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"""
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return True
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register_mechanism('PLAIN', 1, PLAIN, use_hashes=False)
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