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115 lines
4.4 KiB
Python
115 lines
4.4 KiB
Python
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"""
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NTLM authenticating pool, contributed by erikcederstran
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Issue #10, see: http://code.google.com/p/urllib3/issues/detail?id=10
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"""
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try:
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from http.client import HTTPSConnection
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except ImportError:
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from httplib import HTTPSConnection
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from logging import getLogger
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from ntlm import ntlm
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from urllib3 import HTTPSConnectionPool
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log = getLogger(__name__)
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class NTLMConnectionPool(HTTPSConnectionPool):
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"""
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Implements an NTLM authentication version of an urllib3 connection pool
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"""
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scheme = 'https'
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def __init__(self, user, pw, authurl, *args, **kwargs):
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"""
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authurl is a random URL on the server that is protected by NTLM.
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user is the Windows user, probably in the DOMAIN\\username format.
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pw is the password for the user.
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"""
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super(NTLMConnectionPool, self).__init__(*args, **kwargs)
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self.authurl = authurl
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self.rawuser = user
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user_parts = user.split('\\', 1)
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self.domain = user_parts[0].upper()
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self.user = user_parts[1]
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self.pw = pw
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def _new_conn(self):
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# Performs the NTLM handshake that secures the connection. The socket
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# must be kept open while requests are performed.
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self.num_connections += 1
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log.debug('Starting NTLM HTTPS connection no. %d: https://%s%s' %
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(self.num_connections, self.host, self.authurl))
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headers = {}
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headers['Connection'] = 'Keep-Alive'
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req_header = 'Authorization'
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resp_header = 'www-authenticate'
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conn = HTTPSConnection(host=self.host, port=self.port)
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# Send negotiation message
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headers[req_header] = (
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'NTLM %s' % ntlm.create_NTLM_NEGOTIATE_MESSAGE(self.rawuser))
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log.debug('Request headers: %s' % headers)
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conn.request('GET', self.authurl, None, headers)
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res = conn.getresponse()
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reshdr = dict(res.getheaders())
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log.debug('Response status: %s %s' % (res.status, res.reason))
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log.debug('Response headers: %s' % reshdr)
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log.debug('Response data: %s [...]' % res.read(100))
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# Remove the reference to the socket, so that it can not be closed by
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# the response object (we want to keep the socket open)
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res.fp = None
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# Server should respond with a challenge message
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auth_header_values = reshdr[resp_header].split(', ')
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auth_header_value = None
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for s in auth_header_values:
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if s[:5] == 'NTLM ':
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auth_header_value = s[5:]
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if auth_header_value is None:
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raise Exception('Unexpected %s response header: %s' %
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(resp_header, reshdr[resp_header]))
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# Send authentication message
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ServerChallenge, NegotiateFlags = \
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ntlm.parse_NTLM_CHALLENGE_MESSAGE(auth_header_value)
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auth_msg = ntlm.create_NTLM_AUTHENTICATE_MESSAGE(ServerChallenge,
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self.user,
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self.domain,
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self.pw,
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NegotiateFlags)
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headers[req_header] = 'NTLM %s' % auth_msg
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log.debug('Request headers: %s' % headers)
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conn.request('GET', self.authurl, None, headers)
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res = conn.getresponse()
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log.debug('Response status: %s %s' % (res.status, res.reason))
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log.debug('Response headers: %s' % dict(res.getheaders()))
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log.debug('Response data: %s [...]' % res.read()[:100])
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if res.status != 200:
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if res.status == 401:
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raise Exception('Server rejected request: wrong '
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'username or password')
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raise Exception('Wrong server response: %s %s' %
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(res.status, res.reason))
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res.fp = None
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log.debug('Connection established')
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return conn
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def urlopen(self, method, url, body=None, headers=None, retries=3,
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redirect=True, assert_same_host=True):
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if headers is None:
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headers = {}
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headers['Connection'] = 'Keep-Alive'
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return super(NTLMConnectionPool, self).urlopen(method, url, body,
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headers, retries,
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redirect,
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assert_same_host)
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