From 1e1f55c9e5d98ba076bc67e7abe9e4d77d84c65b Mon Sep 17 00:00:00 2001
From: James Taylor <user234683@users.noreply.github.com>
Date: Mon, 25 Feb 2019 20:47:49 -0800
Subject: Use persistent connections

---
 python/urllib3/contrib/ntlmpool.py | 111 +++++++++++++++++++++++++++++++++++++
 1 file changed, 111 insertions(+)
 create mode 100644 python/urllib3/contrib/ntlmpool.py

(limited to 'python/urllib3/contrib/ntlmpool.py')

diff --git a/python/urllib3/contrib/ntlmpool.py b/python/urllib3/contrib/ntlmpool.py
new file mode 100644
index 0000000..8ea127c
--- /dev/null
+++ b/python/urllib3/contrib/ntlmpool.py
@@ -0,0 +1,111 @@
+"""
+NTLM authenticating pool, contributed by erikcederstran
+
+Issue #10, see: http://code.google.com/p/urllib3/issues/detail?id=10
+"""
+from __future__ import absolute_import
+
+from logging import getLogger
+from ntlm import ntlm
+
+from .. import HTTPSConnectionPool
+from ..packages.six.moves.http_client import HTTPSConnection
+
+
+log = getLogger(__name__)
+
+
+class NTLMConnectionPool(HTTPSConnectionPool):
+    """
+    Implements an NTLM authentication version of an urllib3 connection pool
+    """
+
+    scheme = 'https'
+
+    def __init__(self, user, pw, authurl, *args, **kwargs):
+        """
+        authurl is a random URL on the server that is protected by NTLM.
+        user is the Windows user, probably in the DOMAIN\\username format.
+        pw is the password for the user.
+        """
+        super(NTLMConnectionPool, self).__init__(*args, **kwargs)
+        self.authurl = authurl
+        self.rawuser = user
+        user_parts = user.split('\\', 1)
+        self.domain = user_parts[0].upper()
+        self.user = user_parts[1]
+        self.pw = pw
+
+    def _new_conn(self):
+        # Performs the NTLM handshake that secures the connection. The socket
+        # must be kept open while requests are performed.
+        self.num_connections += 1
+        log.debug('Starting NTLM HTTPS connection no. %d: https://%s%s',
+                  self.num_connections, self.host, self.authurl)
+
+        headers = {'Connection': 'Keep-Alive'}
+        req_header = 'Authorization'
+        resp_header = 'www-authenticate'
+
+        conn = HTTPSConnection(host=self.host, port=self.port)
+
+        # Send negotiation message
+        headers[req_header] = (
+            'NTLM %s' % ntlm.create_NTLM_NEGOTIATE_MESSAGE(self.rawuser))
+        log.debug('Request headers: %s', headers)
+        conn.request('GET', self.authurl, None, headers)
+        res = conn.getresponse()
+        reshdr = dict(res.getheaders())
+        log.debug('Response status: %s %s', res.status, res.reason)
+        log.debug('Response headers: %s', reshdr)
+        log.debug('Response data: %s [...]', res.read(100))
+
+        # Remove the reference to the socket, so that it can not be closed by
+        # the response object (we want to keep the socket open)
+        res.fp = None
+
+        # Server should respond with a challenge message
+        auth_header_values = reshdr[resp_header].split(', ')
+        auth_header_value = None
+        for s in auth_header_values:
+            if s[:5] == 'NTLM ':
+                auth_header_value = s[5:]
+        if auth_header_value is None:
+            raise Exception('Unexpected %s response header: %s' %
+                            (resp_header, reshdr[resp_header]))
+
+        # Send authentication message
+        ServerChallenge, NegotiateFlags = \
+            ntlm.parse_NTLM_CHALLENGE_MESSAGE(auth_header_value)
+        auth_msg = ntlm.create_NTLM_AUTHENTICATE_MESSAGE(ServerChallenge,
+                                                         self.user,
+                                                         self.domain,
+                                                         self.pw,
+                                                         NegotiateFlags)
+        headers[req_header] = 'NTLM %s' % auth_msg
+        log.debug('Request headers: %s', headers)
+        conn.request('GET', self.authurl, None, headers)
+        res = conn.getresponse()
+        log.debug('Response status: %s %s', res.status, res.reason)
+        log.debug('Response headers: %s', dict(res.getheaders()))
+        log.debug('Response data: %s [...]', res.read()[:100])
+        if res.status != 200:
+            if res.status == 401:
+                raise Exception('Server rejected request: wrong '
+                                'username or password')
+            raise Exception('Wrong server response: %s %s' %
+                            (res.status, res.reason))
+
+        res.fp = None
+        log.debug('Connection established')
+        return conn
+
+    def urlopen(self, method, url, body=None, headers=None, retries=3,
+                redirect=True, assert_same_host=True):
+        if headers is None:
+            headers = {}
+        headers['Connection'] = 'Keep-Alive'
+        return super(NTLMConnectionPool, self).urlopen(method, url, body,
+                                                       headers, retries,
+                                                       redirect,
+                                                       assert_same_host)
-- 
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