1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
|
# urllib3/connection.py
# Copyright 2008-2013 Andrey Petrov and contributors (see CONTRIBUTORS.txt)
#
# This module is part of urllib3 and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php
import sys
import socket
from socket import timeout as SocketTimeout
try: # Python 3
from http.client import HTTPConnection as _HTTPConnection, HTTPException
except ImportError:
from httplib import HTTPConnection as _HTTPConnection, HTTPException
class DummyConnection(object):
"Used to detect a failed ConnectionCls import."
pass
try: # Compiled with SSL?
ssl = None
HTTPSConnection = DummyConnection
class BaseSSLError(BaseException):
pass
try: # Python 3
from http.client import HTTPSConnection as _HTTPSConnection
except ImportError:
from httplib import HTTPSConnection as _HTTPSConnection
import ssl
BaseSSLError = ssl.SSLError
except (ImportError, AttributeError): # Platform-specific: No SSL.
pass
from .exceptions import (
ConnectTimeoutError,
)
from .packages.ssl_match_hostname import match_hostname
from .packages import six
from .util import (
assert_fingerprint,
resolve_cert_reqs,
resolve_ssl_version,
ssl_wrap_socket,
)
port_by_scheme = {
'http': 80,
'https': 443,
}
class HTTPConnection(_HTTPConnection, object):
"""
Based on httplib.HTTPConnection but provides an extra constructor
backwards-compatibility layer between older and newer Pythons.
"""
default_port = port_by_scheme['http']
# By default, disable Nagle's Algorithm.
tcp_nodelay = 1
def __init__(self, *args, **kw):
if six.PY3: # Python 3
kw.pop('strict', None)
if sys.version_info < (2, 7): # Python 2.6 and earlier
kw.pop('source_address', None)
self.source_address = None
_HTTPConnection.__init__(self, *args, **kw)
def _new_conn(self):
""" Establish a socket connection and set nodelay settings on it
:return: a new socket connection
"""
extra_args = []
if self.source_address: # Python 2.7+
extra_args.append(self.source_address)
conn = socket.create_connection(
(self.host, self.port),
self.timeout,
*extra_args
)
conn.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY,
self.tcp_nodelay)
return conn
def _prepare_conn(self, conn):
self.sock = conn
if self._tunnel_host:
# TODO: Fix tunnel so it doesn't depend on self.sock state.
self._tunnel()
def connect(self):
conn = self._new_conn()
self._prepare_conn(conn)
class HTTPSConnection(HTTPConnection):
default_port = port_by_scheme['https']
def __init__(self, host, port=None, key_file=None, cert_file=None,
strict=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
source_address=None):
HTTPConnection.__init__(self, host, port,
strict=strict,
timeout=timeout,
source_address=source_address)
self.key_file = key_file
self.cert_file = cert_file
def connect(self):
conn = self._new_conn()
self._prepare_conn(conn)
self.sock = ssl.wrap_socket(conn, self.key_file, self.cert_file)
class VerifiedHTTPSConnection(HTTPSConnection):
"""
Based on httplib.HTTPSConnection but wraps the socket with
SSL certification.
"""
cert_reqs = None
ca_certs = None
ssl_version = None
def set_cert(self, key_file=None, cert_file=None,
cert_reqs=None, ca_certs=None,
assert_hostname=None, assert_fingerprint=None):
self.key_file = key_file
self.cert_file = cert_file
self.cert_reqs = cert_reqs
self.ca_certs = ca_certs
self.assert_hostname = assert_hostname
self.assert_fingerprint = assert_fingerprint
def connect(self):
# Add certificate verification
try:
sock = socket.create_connection(
address=(self.host, self.port),
timeout=self.timeout,
)
except SocketTimeout:
raise ConnectTimeoutError(
self, "Connection to %s timed out. (connect timeout=%s)" %
(self.host, self.timeout))
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY,
self.tcp_nodelay)
resolved_cert_reqs = resolve_cert_reqs(self.cert_reqs)
resolved_ssl_version = resolve_ssl_version(self.ssl_version)
# the _tunnel_host attribute was added in python 2.6.3 (via
# http://hg.python.org/cpython/rev/0f57b30a152f) so pythons 2.6(0-2) do
# not have them.
if getattr(self, '_tunnel_host', None):
self.sock = sock
# Calls self._set_hostport(), so self.host is
# self._tunnel_host below.
self._tunnel()
# Wrap socket using verification with the root certs in
# trusted_root_certs
self.sock = ssl_wrap_socket(sock, self.key_file, self.cert_file,
cert_reqs=resolved_cert_reqs,
ca_certs=self.ca_certs,
server_hostname=self.host,
ssl_version=resolved_ssl_version)
if resolved_cert_reqs != ssl.CERT_NONE:
if self.assert_fingerprint:
assert_fingerprint(self.sock.getpeercert(binary_form=True),
self.assert_fingerprint)
elif self.assert_hostname is not False:
match_hostname(self.sock.getpeercert(),
self.assert_hostname or self.host)
if ssl:
# Make a copy for testing.
UnverifiedHTTPSConnection = HTTPSConnection
HTTPSConnection = VerifiedHTTPSConnection
|