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108 lines
3.3 KiB
Python
108 lines
3.3 KiB
Python
10 years ago
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# urllib3/connection.py
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# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
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#
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# This module is part of urllib3 and is released under
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# the MIT License: http://www.opensource.org/licenses/mit-license.php
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import socket
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from socket import timeout as SocketTimeout
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try: # Python 3
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from http.client import HTTPConnection, HTTPException
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except ImportError:
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from httplib import HTTPConnection, HTTPException
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class DummyConnection(object):
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"Used to detect a failed ConnectionCls import."
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pass
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try: # Compiled with SSL?
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ssl = None
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HTTPSConnection = DummyConnection
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class BaseSSLError(BaseException):
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pass
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try: # Python 3
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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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import ssl
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BaseSSLError = ssl.SSLError
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except (ImportError, AttributeError): # Platform-specific: No SSL.
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pass
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from .exceptions import (
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ConnectTimeoutError,
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)
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from .packages.ssl_match_hostname import match_hostname
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from .util import (
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assert_fingerprint,
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resolve_cert_reqs,
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resolve_ssl_version,
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ssl_wrap_socket,
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)
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class VerifiedHTTPSConnection(HTTPSConnection):
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"""
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Based on httplib.HTTPSConnection but wraps the socket with
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SSL certification.
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"""
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cert_reqs = None
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ca_certs = None
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ssl_version = None
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def set_cert(self, key_file=None, cert_file=None,
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cert_reqs=None, ca_certs=None,
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assert_hostname=None, assert_fingerprint=None):
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self.key_file = key_file
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self.cert_file = cert_file
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self.cert_reqs = cert_reqs
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self.ca_certs = ca_certs
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self.assert_hostname = assert_hostname
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self.assert_fingerprint = assert_fingerprint
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def connect(self):
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# Add certificate verification
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try:
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sock = socket.create_connection(
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address=(self.host, self.port),
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timeout=self.timeout,
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)
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except SocketTimeout:
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raise ConnectTimeoutError(
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self, "Connection to %s timed out. (connect timeout=%s)" %
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(self.host, self.timeout))
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resolved_cert_reqs = resolve_cert_reqs(self.cert_reqs)
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resolved_ssl_version = resolve_ssl_version(self.ssl_version)
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if self._tunnel_host:
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self.sock = sock
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# Calls self._set_hostport(), so self.host is
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# self._tunnel_host below.
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self._tunnel()
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# Wrap socket using verification with the root certs in
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# trusted_root_certs
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self.sock = ssl_wrap_socket(sock, self.key_file, self.cert_file,
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cert_reqs=resolved_cert_reqs,
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ca_certs=self.ca_certs,
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server_hostname=self.host,
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ssl_version=resolved_ssl_version)
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if resolved_cert_reqs != ssl.CERT_NONE:
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if self.assert_fingerprint:
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assert_fingerprint(self.sock.getpeercert(binary_form=True),
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self.assert_fingerprint)
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elif self.assert_hostname is not False:
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match_hostname(self.sock.getpeercert(),
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self.assert_hostname or self.host)
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if ssl:
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HTTPSConnection = VerifiedHTTPSConnection
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