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#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
import socket
class SASLError(Exception):
pass
class WrapperClient:
def __init__(self):
self._cli = _Client()
def setAttr(self, name, value):
status = self._cli.setAttr(str(name), str(value))
if not status:
raise SASLError(self._cli.getError())
def init(self):
status = self._cli.init()
if not status:
raise SASLError(self._cli.getError())
def start(self, mechanisms):
status, mech, initial = self._cli.start(str(mechanisms))
if status:
return mech, initial
else:
raise SASLError(self._cli.getError())
def step(self, challenge):
status, response = self._cli.step(challenge)
if status:
return response
else:
raise SASLError(self._cli.getError())
def encode(self, bytes):
status, result = self._cli.encode(bytes)
if status:
return result
else:
raise SASLError(self._cli.getError())
def decode(self, bytes):
status, result = self._cli.decode(bytes)
if status:
return result
else:
raise SASLError(self._cli.getError())
def auth_username(self):
status, result = self._cli.getUserId()
if status:
return result
else:
raise SASLError(self._cli.getError())
class PlainClient:
def __init__(self):
self.attrs = {}
def setAttr(self, name, value):
self.attrs[name] = value
def init(self):
pass
def start(self, mechanisms):
mechs = mechanisms.split()
if self.attrs.get("username") and self.attrs.get("password") and "PLAIN" in mechs:
return "PLAIN", "\0%s\0%s" % (self.attrs.get("username"), self.attrs.get("password"))
elif "ANONYMOUS" in mechs:
return "ANONYMOUS", "%s@%s" % (self.attrs.get("username"), socket.gethostname())
else:
raise SASLError("sasl negotiation failed: no mechanism agreed")
def step(self, challenge):
pass
def encode(self, bytes):
return bytes
def decode(self, bytes):
return bytes
def auth_username(self):
return self.attrs.get("username")
try:
from saslwrapper import Client as _Client
Client = WrapperClient
except ImportError:
Client = PlainClient
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