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synced 2025-07-03 02:20:17 -05:00
Add server version to master api
Add IsEvadedOffense to EFPenalty Fix remote log reading in not Windows
This commit is contained in:
391
Master/env_master/Lib/site-packages/urllib3/connection.py
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391
Master/env_master/Lib/site-packages/urllib3/connection.py
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from __future__ import absolute_import
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import datetime
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import logging
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import os
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import socket
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from socket import error as SocketError, timeout as SocketTimeout
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import warnings
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from .packages import six
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from .packages.six.moves.http_client import HTTPConnection as _HTTPConnection
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from .packages.six.moves.http_client import HTTPException # noqa: F401
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try: # Compiled with SSL?
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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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ssl = None
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class BaseSSLError(BaseException):
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pass
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try: # Python 3:
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# Not a no-op, we're adding this to the namespace so it can be imported.
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ConnectionError = ConnectionError
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except NameError: # Python 2:
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class ConnectionError(Exception):
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pass
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from .exceptions import (
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NewConnectionError,
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ConnectTimeoutError,
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SubjectAltNameWarning,
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SystemTimeWarning,
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)
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from .packages.ssl_match_hostname import match_hostname, CertificateError
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from .util.ssl_ import (
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resolve_cert_reqs,
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resolve_ssl_version,
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assert_fingerprint,
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create_urllib3_context,
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ssl_wrap_socket
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)
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from .util import connection
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from ._collections import HTTPHeaderDict
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log = logging.getLogger(__name__)
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port_by_scheme = {
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'http': 80,
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'https': 443,
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}
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# When updating RECENT_DATE, move it to within two years of the current date,
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# and not less than 6 months ago.
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# Example: if Today is 2018-01-01, then RECENT_DATE should be any date on or
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# after 2016-01-01 (today - 2 years) AND before 2017-07-01 (today - 6 months)
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RECENT_DATE = datetime.date(2017, 6, 30)
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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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class HTTPConnection(_HTTPConnection, object):
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"""
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Based on httplib.HTTPConnection but provides an extra constructor
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backwards-compatibility layer between older and newer Pythons.
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Additional keyword parameters are used to configure attributes of the connection.
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Accepted parameters include:
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- ``strict``: See the documentation on :class:`urllib3.connectionpool.HTTPConnectionPool`
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- ``source_address``: Set the source address for the current connection.
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- ``socket_options``: Set specific options on the underlying socket. If not specified, then
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defaults are loaded from ``HTTPConnection.default_socket_options`` which includes disabling
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Nagle's algorithm (sets TCP_NODELAY to 1) unless the connection is behind a proxy.
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For example, if you wish to enable TCP Keep Alive in addition to the defaults,
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you might pass::
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HTTPConnection.default_socket_options + [
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(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1),
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]
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Or you may want to disable the defaults by passing an empty list (e.g., ``[]``).
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"""
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default_port = port_by_scheme['http']
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#: Disable Nagle's algorithm by default.
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#: ``[(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)]``
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default_socket_options = [(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)]
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#: Whether this connection verifies the host's certificate.
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is_verified = False
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def __init__(self, *args, **kw):
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if six.PY3: # Python 3
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kw.pop('strict', None)
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# Pre-set source_address.
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self.source_address = kw.get('source_address')
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#: The socket options provided by the user. If no options are
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#: provided, we use the default options.
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self.socket_options = kw.pop('socket_options', self.default_socket_options)
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_HTTPConnection.__init__(self, *args, **kw)
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@property
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def host(self):
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"""
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Getter method to remove any trailing dots that indicate the hostname is an FQDN.
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In general, SSL certificates don't include the trailing dot indicating a
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fully-qualified domain name, and thus, they don't validate properly when
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checked against a domain name that includes the dot. In addition, some
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servers may not expect to receive the trailing dot when provided.
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However, the hostname with trailing dot is critical to DNS resolution; doing a
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lookup with the trailing dot will properly only resolve the appropriate FQDN,
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whereas a lookup without a trailing dot will search the system's search domain
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list. Thus, it's important to keep the original host around for use only in
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those cases where it's appropriate (i.e., when doing DNS lookup to establish the
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actual TCP connection across which we're going to send HTTP requests).
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"""
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return self._dns_host.rstrip('.')
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@host.setter
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def host(self, value):
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"""
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Setter for the `host` property.
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We assume that only urllib3 uses the _dns_host attribute; httplib itself
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only uses `host`, and it seems reasonable that other libraries follow suit.
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"""
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self._dns_host = value
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def _new_conn(self):
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""" Establish a socket connection and set nodelay settings on it.
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:return: New socket connection.
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"""
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extra_kw = {}
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if self.source_address:
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extra_kw['source_address'] = self.source_address
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if self.socket_options:
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extra_kw['socket_options'] = self.socket_options
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try:
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conn = connection.create_connection(
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(self._dns_host, self.port), self.timeout, **extra_kw)
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except SocketTimeout as e:
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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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except SocketError as e:
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raise NewConnectionError(
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self, "Failed to establish a new connection: %s" % e)
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return conn
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def _prepare_conn(self, conn):
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self.sock = conn
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if self._tunnel_host:
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# TODO: Fix tunnel so it doesn't depend on self.sock state.
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self._tunnel()
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# Mark this connection as not reusable
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self.auto_open = 0
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def connect(self):
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conn = self._new_conn()
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self._prepare_conn(conn)
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def request_chunked(self, method, url, body=None, headers=None):
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"""
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Alternative to the common request method, which sends the
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body with chunked encoding and not as one block
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"""
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headers = HTTPHeaderDict(headers if headers is not None else {})
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skip_accept_encoding = 'accept-encoding' in headers
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skip_host = 'host' in headers
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self.putrequest(
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method,
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url,
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skip_accept_encoding=skip_accept_encoding,
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skip_host=skip_host
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)
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for header, value in headers.items():
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self.putheader(header, value)
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if 'transfer-encoding' not in headers:
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self.putheader('Transfer-Encoding', 'chunked')
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self.endheaders()
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if body is not None:
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stringish_types = six.string_types + (bytes,)
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if isinstance(body, stringish_types):
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body = (body,)
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for chunk in body:
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if not chunk:
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continue
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if not isinstance(chunk, bytes):
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chunk = chunk.encode('utf8')
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len_str = hex(len(chunk))[2:]
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self.send(len_str.encode('utf-8'))
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self.send(b'\r\n')
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self.send(chunk)
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self.send(b'\r\n')
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# After the if clause, to always have a closed body
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self.send(b'0\r\n\r\n')
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class HTTPSConnection(HTTPConnection):
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default_port = port_by_scheme['https']
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ssl_version = None
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def __init__(self, host, port=None, key_file=None, cert_file=None,
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strict=None, timeout=socket._GLOBAL_DEFAULT_TIMEOUT,
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ssl_context=None, server_hostname=None, **kw):
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HTTPConnection.__init__(self, host, port, strict=strict,
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timeout=timeout, **kw)
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self.key_file = key_file
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self.cert_file = cert_file
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self.ssl_context = ssl_context
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self.server_hostname = server_hostname
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# Required property for Google AppEngine 1.9.0 which otherwise causes
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# HTTPS requests to go out as HTTP. (See Issue #356)
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self._protocol = 'https'
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def connect(self):
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conn = self._new_conn()
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self._prepare_conn(conn)
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if self.ssl_context is None:
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self.ssl_context = create_urllib3_context(
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ssl_version=resolve_ssl_version(None),
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cert_reqs=resolve_cert_reqs(None),
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)
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self.sock = ssl_wrap_socket(
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sock=conn,
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keyfile=self.key_file,
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certfile=self.cert_file,
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ssl_context=self.ssl_context,
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server_hostname=self.server_hostname
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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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ca_cert_dir = None
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ssl_version = None
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assert_fingerprint = 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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ca_cert_dir=None):
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"""
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This method should only be called once, before the connection is used.
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"""
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# If cert_reqs is not provided, we can try to guess. If the user gave
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# us a cert database, we assume they want to use it: otherwise, if
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# they gave us an SSL Context object we should use whatever is set for
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# it.
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if cert_reqs is None:
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if ca_certs or ca_cert_dir:
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cert_reqs = 'CERT_REQUIRED'
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elif self.ssl_context is not None:
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cert_reqs = self.ssl_context.verify_mode
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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.assert_hostname = assert_hostname
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self.assert_fingerprint = assert_fingerprint
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self.ca_certs = ca_certs and os.path.expanduser(ca_certs)
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self.ca_cert_dir = ca_cert_dir and os.path.expanduser(ca_cert_dir)
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def connect(self):
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# Add certificate verification
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conn = self._new_conn()
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hostname = self.host
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if self._tunnel_host:
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self.sock = conn
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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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# Mark this connection as not reusable
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self.auto_open = 0
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# Override the host with the one we're requesting data from.
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hostname = self._tunnel_host
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server_hostname = hostname
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if self.server_hostname is not None:
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server_hostname = self.server_hostname
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is_time_off = datetime.date.today() < RECENT_DATE
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if is_time_off:
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warnings.warn((
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'System time is way off (before {0}). This will probably '
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'lead to SSL verification errors').format(RECENT_DATE),
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SystemTimeWarning
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)
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# Wrap socket using verification with the root certs in
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# trusted_root_certs
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if self.ssl_context is None:
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self.ssl_context = create_urllib3_context(
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ssl_version=resolve_ssl_version(self.ssl_version),
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cert_reqs=resolve_cert_reqs(self.cert_reqs),
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)
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context = self.ssl_context
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context.verify_mode = resolve_cert_reqs(self.cert_reqs)
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self.sock = ssl_wrap_socket(
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sock=conn,
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keyfile=self.key_file,
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certfile=self.cert_file,
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ca_certs=self.ca_certs,
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ca_cert_dir=self.ca_cert_dir,
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server_hostname=server_hostname,
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ssl_context=context)
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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 context.verify_mode != ssl.CERT_NONE \
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and not getattr(context, 'check_hostname', False) \
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and self.assert_hostname is not False:
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# While urllib3 attempts to always turn off hostname matching from
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# the TLS library, this cannot always be done. So we check whether
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# the TLS Library still thinks it's matching hostnames.
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cert = self.sock.getpeercert()
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if not cert.get('subjectAltName', ()):
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warnings.warn((
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'Certificate for {0} has no `subjectAltName`, falling back to check for a '
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'`commonName` for now. This feature is being removed by major browsers and '
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'deprecated by RFC 2818. (See https://github.com/shazow/urllib3/issues/497 '
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'for details.)'.format(hostname)),
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SubjectAltNameWarning
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)
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_match_hostname(cert, self.assert_hostname or server_hostname)
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self.is_verified = (
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context.verify_mode == ssl.CERT_REQUIRED or
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self.assert_fingerprint is not None
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)
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def _match_hostname(cert, asserted_hostname):
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try:
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match_hostname(cert, asserted_hostname)
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except CertificateError as e:
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log.error(
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'Certificate did not match expected hostname: %s. '
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'Certificate: %s', asserted_hostname, cert
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)
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# Add cert to exception and reraise so client code can inspect
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# the cert when catching the exception, if they want to
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e._peer_cert = cert
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raise
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if ssl:
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# Make a copy for testing.
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UnverifiedHTTPSConnection = HTTPSConnection
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HTTPSConnection = VerifiedHTTPSConnection
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else:
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HTTPSConnection = DummyConnection
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Reference in New Issue
Block a user