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
|
#
# Override a slew of methods to have more control over SSL
import socket
import requests
import urlparse
from urllib3.util import get_host
from urllib3.connectionpool import HTTPConnectionPool, HTTPSConnectionPool
import logging
# Don't bend over backwards for ssl support, assume it is there.
import ssl
try: # Python 3
from http.client import HTTPConnection, HTTPException
from http.client import HTTP_PORT, HTTPS_PORT
from http.client import HTTPSConnection
except ImportError:
from httplib import HTTPConnection, HTTPException
from httplib import HTTP_PORT, HTTPS_PORT
from httplib import HTTPSConnection
try:
# python3.2+
from ssl import match_hostname, CertificateError
except ImportError:
try:
# Older python where the backport from pypi is installed
from backports.ssl_match_hostname import match_hostname, CertificateError
except ImportError:
# Other older python we use the urllib3 bundled copy
from urllib3.packages.ssl_match_hostname import match_hostname, CertificateError
log = logging.getLogger(__name__)
def connection_from_url(url, **kw):
"""
Given a url, return an :class:`.ConnectionPool` instance of its host.
This is a shortcut for not having to parse out the scheme, host, and port
of the url before creating an :class:`.ConnectionPool` instance.
:param url:
Absolute URL string that must include the scheme. Port is optional.
:param \**kw:
Passes additional parameters to the constructor of the appropriate
:class:`.ConnectionPool`. Useful for specifying things like
timeout, maxsize, headers, etc.
Example: ::
>>> conn = connection_from_url('http://google.com/')
>>> r = conn.request('GET', '/')
"""
scheme, host, port = get_host(url)
if scheme == 'https':
return MyHTTPSConnectionPool(host, port=port, **kw)
else:
return HTTPConnectionPool(host, port=port, **kw)
class MyHTTPSConnectionPool(HTTPSConnectionPool):
def __init__(self, host, port=None,
strict=False, timeout=None, maxsize=1,
block=False, headers=None,
key_file=None, cert_file=None,
cert_reqs='CERT_REQUIRED', ca_certs='/etc/ssl/certs/ca-certificates.crt', ssl_version=ssl.PROTOCOL_SSLv23, ciphers=None):
super(HTTPSConnectionPool, self).__init__(host, port,
strict, timeout, maxsize,
block, headers)
self.key_file = key_file
self.cert_file = cert_file
self.cert_reqs = cert_reqs
self.ca_certs = ca_certs
self.ssl_version = ssl_version
self.ciphers = ciphers
def _new_conn(self):
"""
Return a fresh :class:`httplib.HTTPSConnection`.
"""
self.num_connections += 1
log.info("Starting new HTTPS connection (%d): %s"
% (self.num_connections, self.host))
#if not ssl: # Platform-specific: Python compiled without +ssl
# if not HTTPSConnection or HTTPSConnection is object:
# raise SSLError("Can't connect to HTTPS URL because the SSL "
# "module is not available.")
# return HTTPSConnection(host=self.host, port=self.port)
connection = MyVerifiedHTTPSConnection(host=self.host, port=self.port)
connection.set_cert(key_file=self.key_file, cert_file=self.cert_file,
cert_reqs=self.cert_reqs, ca_certs=self.ca_certs)
connection.set_ssl_version(self.ssl_version)
connection.set_ciphers(self.ciphers)
return connection
class MyVerifiedHTTPSConnection(HTTPSConnection):
"""
Based on httplib.HTTPSConnection but wraps the socket with
SSL certification.
"""
cert_reqs = None
ca_certs = None
client_cipher = None
def set_cert(self, key_file=None, cert_file=None,
cert_reqs='CERT_NONE', ca_certs=None):
ssl_req_scheme = {
'CERT_NONE': ssl.CERT_NONE,
'CERT_OPTIONAL': ssl.CERT_OPTIONAL,
'CERT_REQUIRED': ssl.CERT_REQUIRED
}
self.key_file = key_file
self.cert_file = cert_file
self.cert_reqs = ssl_req_scheme.get(cert_reqs) or ssl.CERT_NONE
self.ca_certs = ca_certs
def set_ssl_version(self, ssl_version=ssl.PROTOCOL_SSLv23):
self.ssl_version = ssl_version
def set_ciphers(self, ciphers=None):
self.ciphers = ciphers
def connect(self):
# Add certificate verification
sock = socket.create_connection((self.host, self.port), self.timeout)
# 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=self.cert_reqs,
ca_certs=self.ca_certs,
ssl_version=self.ssl_version,
ciphers=self.ciphers)
if self.ca_certs:
match_hostname(self.sock.getpeercert(), self.host)
def close(self):
if self.sock:
self.client_cipher = self.sock.cipher()
HTTPSConnection.close(self)
class MyAdapter(requests.adapters.HTTPAdapter):
def get_connection(self, url, proxies=None):
"""Returns a connection for the given URL."""
# proxies are not supported
return connection_from_url(url)
def cert_verify(self, conn, url, verify, cert):
# I'm overloading the content of verify since this API is so
# braindead. If verify is a dict then key 'verify' represents the
# original meaning, the other keys are my own.
if isinstance(verify, bool):
super(MyAdapter, self).cert_verify(conn, url, verify, cert)
elif isinstance(verify, dict):
if 'verify' in verify:
super(MyAdapter, self).cert_verify(conn, url,
verify['verify'], cert)
if 'ssl_version' in verify:
conn.ssl_version = verify['ssl_version']
if 'ciphers' in verify:
conn.ciphers = verify['ciphers']
if 'cert_file' in verify:
conn.cert_file = verify['cert_file']
if 'key_file' in verify:
conn.key_file = verify['key_file']
else: # huh? Do nothing
pass
"""
s = requests.Session()
s.mount('https://', MyAdapter())
try:
r = s.get('https://test.example.com:8000/', verify={'verify': False, 'ssl_version': ssl.PROTOCOL_SSLv23, 'ciphers': 'HIGH'})
cipher = r.raw._pool._get_conn().client_cipher
except requests.exceptions.SSLError, e:
print e.message
else:
print r.status_code
print cipher
#request = requests.get('https://test.example.com:8000/', verify=False)
#print request.status_code
"""
|
