You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
713 lines
26 KiB
713 lines
26 KiB
# Wrapper module for _ssl. Written by Bill Janssen.
|
|
# Ported to gevent by Denis Bilenko.
|
|
"""SSL wrapper for socket objects on Python 3.
|
|
|
|
For the documentation, refer to :mod:`ssl` module manual.
|
|
|
|
This module implements cooperative SSL socket wrappers.
|
|
"""
|
|
# Our import magic sadly makes this warning useless
|
|
# pylint: disable=undefined-variable
|
|
# pylint:disable=no-member
|
|
|
|
from __future__ import absolute_import
|
|
import ssl as __ssl__
|
|
|
|
_ssl = __ssl__._ssl
|
|
|
|
import errno
|
|
from gevent.socket import socket, timeout_default
|
|
from gevent.socket import error as socket_error
|
|
from gevent.socket import timeout as _socket_timeout
|
|
from gevent._util import copy_globals
|
|
|
|
from weakref import ref as _wref
|
|
|
|
__implements__ = [
|
|
'SSLContext',
|
|
'SSLSocket',
|
|
'wrap_socket',
|
|
'get_server_certificate',
|
|
]
|
|
|
|
# Import all symbols from Python's ssl.py, except those that we are implementing
|
|
# and "private" symbols.
|
|
__imports__ = copy_globals(__ssl__, globals(),
|
|
# SSLSocket *must* subclass gevent.socket.socket; see issue 597
|
|
names_to_ignore=__implements__ + ['socket'],
|
|
dunder_names_to_keep=())
|
|
|
|
__all__ = __implements__ + __imports__
|
|
if 'namedtuple' in __all__:
|
|
__all__.remove('namedtuple')
|
|
|
|
orig_SSLContext = __ssl__.SSLContext # pylint:disable=no-member
|
|
|
|
|
|
class SSLContext(orig_SSLContext):
|
|
|
|
# Added in Python 3.7
|
|
sslsocket_class = None # SSLSocket is assigned later
|
|
|
|
def wrap_socket(self, sock, server_side=False,
|
|
do_handshake_on_connect=True,
|
|
suppress_ragged_eofs=True,
|
|
server_hostname=None,
|
|
session=None):
|
|
# pylint:disable=arguments-differ,not-callable
|
|
# (3.6 adds session)
|
|
# Sadly, using *args and **kwargs doesn't work
|
|
return self.sslsocket_class(
|
|
sock=sock, server_side=server_side,
|
|
do_handshake_on_connect=do_handshake_on_connect,
|
|
suppress_ragged_eofs=suppress_ragged_eofs,
|
|
server_hostname=server_hostname,
|
|
_context=self,
|
|
_session=session)
|
|
|
|
if not hasattr(orig_SSLContext, 'check_hostname'):
|
|
# Python 3.3 lacks this
|
|
check_hostname = False
|
|
|
|
if hasattr(orig_SSLContext.options, 'setter'):
|
|
# In 3.6, these became properties. They want to access the
|
|
# property __set__ method in the superclass, and they do so by using
|
|
# super(SSLContext, SSLContext). But we rebind SSLContext when we monkey
|
|
# patch, which causes infinite recursion.
|
|
# https://github.com/python/cpython/commit/328067c468f82e4ec1b5c510a4e84509e010f296
|
|
# pylint:disable=no-member
|
|
@orig_SSLContext.options.setter
|
|
def options(self, value):
|
|
super(orig_SSLContext, orig_SSLContext).options.__set__(self, value)
|
|
|
|
@orig_SSLContext.verify_flags.setter
|
|
def verify_flags(self, value):
|
|
super(orig_SSLContext, orig_SSLContext).verify_flags.__set__(self, value)
|
|
|
|
@orig_SSLContext.verify_mode.setter
|
|
def verify_mode(self, value):
|
|
super(orig_SSLContext, orig_SSLContext).verify_mode.__set__(self, value)
|
|
|
|
if hasattr(orig_SSLContext, 'minimum_version'):
|
|
# Like the above, added in 3.7
|
|
@orig_SSLContext.minimum_version.setter
|
|
def minimum_version(self, value):
|
|
super(orig_SSLContext, orig_SSLContext).minimum_version.__set__(self, value)
|
|
|
|
@orig_SSLContext.maximum_version.setter
|
|
def maximum_version(self, value):
|
|
super(orig_SSLContext, orig_SSLContext).maximum_version.__set__(self, value)
|
|
|
|
|
|
class _contextawaresock(socket._gevent_sock_class):
|
|
# We have to pass the raw stdlib socket to SSLContext.wrap_socket.
|
|
# That method in turn can pass that object on to things like SNI callbacks.
|
|
# It wouldn't have access to any of the attributes on the SSLSocket, like
|
|
# context, that it's supposed to (see test_ssl.test_sni_callback). Our
|
|
# solution is to keep a weak reference to the SSLSocket on the raw
|
|
# socket and delegate.
|
|
|
|
# We keep it in a slot to avoid having the ability to set any attributes
|
|
# we're not prepared for (because we don't know what to delegate.)
|
|
|
|
__slots__ = ('_sslsock',)
|
|
|
|
@property
|
|
def context(self):
|
|
return self._sslsock().context
|
|
|
|
@context.setter
|
|
def context(self, ctx):
|
|
self._sslsock().context = ctx
|
|
|
|
@property
|
|
def session(self):
|
|
"""The SSLSession for client socket."""
|
|
return self._sslsock().session
|
|
|
|
@session.setter
|
|
def session(self, session):
|
|
self._sslsock().session = session
|
|
|
|
def __getattr__(self, name):
|
|
try:
|
|
return getattr(self._sslsock(), name)
|
|
except RuntimeError:
|
|
# XXX: If the attribute doesn't exist,
|
|
# we infinitely recurse
|
|
pass
|
|
raise AttributeError(name)
|
|
|
|
try:
|
|
_SSLObject_factory = SSLObject
|
|
except NameError:
|
|
# 3.4 and below do not have SSLObject, something
|
|
# we magically import through copy_globals
|
|
pass
|
|
else:
|
|
if hasattr(SSLObject, '_create'):
|
|
# 3.7 is making thing difficult and won't let you
|
|
# actually construct an object
|
|
def _SSLObject_factory(sslobj, owner=None, session=None):
|
|
s = SSLObject.__new__(SSLObject)
|
|
s._sslobj = sslobj
|
|
s._sslobj.owner = owner or s
|
|
if session is not None:
|
|
s._sslobj.session = session
|
|
return s
|
|
|
|
class SSLSocket(socket):
|
|
"""
|
|
gevent `ssl.SSLSocket <https://docs.python.org/3/library/ssl.html#ssl-sockets>`_
|
|
for Python 3.
|
|
"""
|
|
|
|
# pylint:disable=too-many-instance-attributes,too-many-public-methods
|
|
|
|
_gevent_sock_class = _contextawaresock
|
|
|
|
def __init__(self, sock=None, keyfile=None, certfile=None,
|
|
server_side=False, cert_reqs=CERT_NONE,
|
|
ssl_version=PROTOCOL_SSLv23, ca_certs=None,
|
|
do_handshake_on_connect=True,
|
|
family=AF_INET, type=SOCK_STREAM, proto=0, fileno=None,
|
|
suppress_ragged_eofs=True, npn_protocols=None, ciphers=None,
|
|
server_hostname=None,
|
|
_session=None, # 3.6
|
|
_context=None):
|
|
|
|
# pylint:disable=too-many-locals,too-many-statements,too-many-branches
|
|
if _context:
|
|
self._context = _context
|
|
else:
|
|
if server_side and not certfile:
|
|
raise ValueError("certfile must be specified for server-side "
|
|
"operations")
|
|
if keyfile and not certfile:
|
|
raise ValueError("certfile must be specified")
|
|
if certfile and not keyfile:
|
|
keyfile = certfile
|
|
self._context = SSLContext(ssl_version)
|
|
self._context.verify_mode = cert_reqs
|
|
if ca_certs:
|
|
self._context.load_verify_locations(ca_certs)
|
|
if certfile:
|
|
self._context.load_cert_chain(certfile, keyfile)
|
|
if npn_protocols:
|
|
self._context.set_npn_protocols(npn_protocols)
|
|
if ciphers:
|
|
self._context.set_ciphers(ciphers)
|
|
self.keyfile = keyfile
|
|
self.certfile = certfile
|
|
self.cert_reqs = cert_reqs
|
|
self.ssl_version = ssl_version
|
|
self.ca_certs = ca_certs
|
|
self.ciphers = ciphers
|
|
# Can't use sock.type as other flags (such as SOCK_NONBLOCK) get
|
|
# mixed in.
|
|
if sock.getsockopt(SOL_SOCKET, SO_TYPE) != SOCK_STREAM:
|
|
raise NotImplementedError("only stream sockets are supported")
|
|
if server_side:
|
|
if server_hostname:
|
|
raise ValueError("server_hostname can only be specified "
|
|
"in client mode")
|
|
if _session is not None:
|
|
raise ValueError("session can only be specified "
|
|
"in client mode")
|
|
if self._context.check_hostname and not server_hostname:
|
|
raise ValueError("check_hostname requires server_hostname")
|
|
self._session = _session
|
|
self.server_side = server_side
|
|
self.server_hostname = server_hostname
|
|
self.do_handshake_on_connect = do_handshake_on_connect
|
|
self.suppress_ragged_eofs = suppress_ragged_eofs
|
|
connected = False
|
|
if sock is not None:
|
|
socket.__init__(self,
|
|
family=sock.family,
|
|
type=sock.type,
|
|
proto=sock.proto,
|
|
fileno=sock.fileno())
|
|
self.settimeout(sock.gettimeout())
|
|
# see if it's connected
|
|
try:
|
|
sock.getpeername()
|
|
except socket_error as e:
|
|
if e.errno != errno.ENOTCONN:
|
|
raise
|
|
else:
|
|
connected = True
|
|
sock.detach()
|
|
elif fileno is not None:
|
|
socket.__init__(self, fileno=fileno)
|
|
else:
|
|
socket.__init__(self, family=family, type=type, proto=proto)
|
|
|
|
self._sock._sslsock = _wref(self)
|
|
self._closed = False
|
|
self._sslobj = None
|
|
self._connected = connected
|
|
if connected:
|
|
# create the SSL object
|
|
try:
|
|
self._sslobj = self._context._wrap_socket(self._sock, server_side,
|
|
server_hostname)
|
|
if _session is not None: # 3.6+
|
|
self._sslobj = _SSLObject_factory(self._sslobj, owner=self,
|
|
session=self._session)
|
|
if do_handshake_on_connect:
|
|
timeout = self.gettimeout()
|
|
if timeout == 0.0:
|
|
# non-blocking
|
|
raise ValueError("do_handshake_on_connect should not be specified for non-blocking sockets")
|
|
self.do_handshake()
|
|
|
|
except socket_error as x:
|
|
self.close()
|
|
raise x
|
|
|
|
@property
|
|
def context(self):
|
|
return self._context
|
|
|
|
@context.setter
|
|
def context(self, ctx):
|
|
self._context = ctx
|
|
self._sslobj.context = ctx
|
|
|
|
@property
|
|
def session(self):
|
|
"""The SSLSession for client socket."""
|
|
if self._sslobj is not None:
|
|
return self._sslobj.session
|
|
|
|
@session.setter
|
|
def session(self, session):
|
|
self._session = session
|
|
if self._sslobj is not None:
|
|
self._sslobj.session = session
|
|
|
|
@property
|
|
def session_reused(self):
|
|
"""Was the client session reused during handshake"""
|
|
if self._sslobj is not None:
|
|
return self._sslobj.session_reused
|
|
|
|
def dup(self):
|
|
raise NotImplementedError("Can't dup() %s instances" %
|
|
self.__class__.__name__)
|
|
|
|
def _checkClosed(self, msg=None):
|
|
# raise an exception here if you wish to check for spurious closes
|
|
pass
|
|
|
|
def _check_connected(self):
|
|
if not self._connected:
|
|
# getpeername() will raise ENOTCONN if the socket is really
|
|
# not connected; note that we can be connected even without
|
|
# _connected being set, e.g. if connect() first returned
|
|
# EAGAIN.
|
|
self.getpeername()
|
|
|
|
def read(self, len=1024, buffer=None):
|
|
"""Read up to LEN bytes and return them.
|
|
Return zero-length string on EOF."""
|
|
# pylint:disable=too-many-branches
|
|
self._checkClosed()
|
|
|
|
while True:
|
|
if not self._sslobj:
|
|
raise ValueError("Read on closed or unwrapped SSL socket.")
|
|
if len == 0:
|
|
return b'' if buffer is None else 0
|
|
# Negative lengths are handled natively when the buffer is None
|
|
# to raise a ValueError
|
|
try:
|
|
if buffer is not None:
|
|
return self._sslobj.read(len, buffer)
|
|
return self._sslobj.read(len or 1024)
|
|
except SSLWantReadError:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._read_event, timeout_exc=_SSLErrorReadTimeout)
|
|
except SSLWantWriteError:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
# note: using _SSLErrorReadTimeout rather than _SSLErrorWriteTimeout below is intentional
|
|
self._wait(self._write_event, timeout_exc=_SSLErrorReadTimeout)
|
|
except SSLError as ex:
|
|
if ex.args[0] == SSL_ERROR_EOF and self.suppress_ragged_eofs:
|
|
if buffer is None:
|
|
return b''
|
|
return 0
|
|
raise
|
|
|
|
def write(self, data):
|
|
"""Write DATA to the underlying SSL channel. Returns
|
|
number of bytes of DATA actually transmitted."""
|
|
self._checkClosed()
|
|
|
|
while True:
|
|
if not self._sslobj:
|
|
raise ValueError("Write on closed or unwrapped SSL socket.")
|
|
|
|
try:
|
|
return self._sslobj.write(data)
|
|
except SSLError as ex:
|
|
if ex.args[0] == SSL_ERROR_WANT_READ:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._read_event, timeout_exc=_SSLErrorWriteTimeout)
|
|
elif ex.args[0] == SSL_ERROR_WANT_WRITE:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._write_event, timeout_exc=_SSLErrorWriteTimeout)
|
|
else:
|
|
raise
|
|
|
|
def getpeercert(self, binary_form=False):
|
|
"""Returns a formatted version of the data in the
|
|
certificate provided by the other end of the SSL channel.
|
|
Return None if no certificate was provided, {} if a
|
|
certificate was provided, but not validated."""
|
|
|
|
self._checkClosed()
|
|
self._check_connected()
|
|
try:
|
|
c = self._sslobj.peer_certificate
|
|
except AttributeError:
|
|
# 3.6
|
|
c = self._sslobj.getpeercert
|
|
|
|
return c(binary_form)
|
|
|
|
def selected_npn_protocol(self):
|
|
self._checkClosed()
|
|
if not self._sslobj or not _ssl.HAS_NPN:
|
|
return None
|
|
return self._sslobj.selected_npn_protocol()
|
|
|
|
if hasattr(_ssl, 'HAS_ALPN'):
|
|
# 3.5+
|
|
def selected_alpn_protocol(self):
|
|
self._checkClosed()
|
|
if not self._sslobj or not _ssl.HAS_ALPN: # pylint:disable=no-member
|
|
return None
|
|
return self._sslobj.selected_alpn_protocol()
|
|
|
|
def shared_ciphers(self):
|
|
"""Return a list of ciphers shared by the client during the handshake or
|
|
None if this is not a valid server connection.
|
|
"""
|
|
return self._sslobj.shared_ciphers()
|
|
|
|
def version(self):
|
|
"""Return a string identifying the protocol version used by the
|
|
current SSL channel. """
|
|
if not self._sslobj:
|
|
return None
|
|
return self._sslobj.version()
|
|
|
|
# We inherit sendfile from super(); it always uses `send`
|
|
|
|
def cipher(self):
|
|
self._checkClosed()
|
|
if not self._sslobj:
|
|
return None
|
|
return self._sslobj.cipher()
|
|
|
|
def compression(self):
|
|
self._checkClosed()
|
|
if not self._sslobj:
|
|
return None
|
|
return self._sslobj.compression()
|
|
|
|
def send(self, data, flags=0, timeout=timeout_default):
|
|
self._checkClosed()
|
|
if timeout is timeout_default:
|
|
timeout = self.timeout
|
|
if self._sslobj:
|
|
if flags != 0:
|
|
raise ValueError(
|
|
"non-zero flags not allowed in calls to send() on %s" %
|
|
self.__class__)
|
|
while True:
|
|
try:
|
|
return self._sslobj.write(data)
|
|
except SSLWantReadError:
|
|
if self.timeout == 0.0:
|
|
return 0
|
|
self._wait(self._read_event)
|
|
except SSLWantWriteError:
|
|
if self.timeout == 0.0:
|
|
return 0
|
|
self._wait(self._write_event)
|
|
else:
|
|
return socket.send(self, data, flags, timeout)
|
|
|
|
def sendto(self, data, flags_or_addr, addr=None):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
raise ValueError("sendto not allowed on instances of %s" %
|
|
self.__class__)
|
|
elif addr is None:
|
|
return socket.sendto(self, data, flags_or_addr)
|
|
else:
|
|
return socket.sendto(self, data, flags_or_addr, addr)
|
|
|
|
def sendmsg(self, *args, **kwargs):
|
|
# Ensure programs don't send data unencrypted if they try to
|
|
# use this method.
|
|
raise NotImplementedError("sendmsg not allowed on instances of %s" %
|
|
self.__class__)
|
|
|
|
def sendall(self, data, flags=0):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
if flags != 0:
|
|
raise ValueError(
|
|
"non-zero flags not allowed in calls to sendall() on %s" %
|
|
self.__class__)
|
|
|
|
try:
|
|
return socket.sendall(self, data, flags)
|
|
except _socket_timeout:
|
|
if self.timeout == 0.0:
|
|
# Raised by the stdlib on non-blocking sockets
|
|
raise SSLWantWriteError("The operation did not complete (write)")
|
|
raise
|
|
|
|
def recv(self, buflen=1024, flags=0):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
if flags != 0:
|
|
raise ValueError(
|
|
"non-zero flags not allowed in calls to recv() on %s" %
|
|
self.__class__)
|
|
if buflen == 0:
|
|
# https://github.com/python/cpython/commit/00915577dd84ba75016400793bf547666e6b29b5
|
|
# Python #23804
|
|
return b''
|
|
return self.read(buflen)
|
|
return socket.recv(self, buflen, flags)
|
|
|
|
def recv_into(self, buffer, nbytes=None, flags=0):
|
|
self._checkClosed()
|
|
if buffer and (nbytes is None):
|
|
nbytes = len(buffer)
|
|
elif nbytes is None:
|
|
nbytes = 1024
|
|
if self._sslobj:
|
|
if flags != 0:
|
|
raise ValueError("non-zero flags not allowed in calls to recv_into() on %s" % self.__class__)
|
|
return self.read(nbytes, buffer)
|
|
return socket.recv_into(self, buffer, nbytes, flags)
|
|
|
|
def recvfrom(self, buflen=1024, flags=0):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
raise ValueError("recvfrom not allowed on instances of %s" %
|
|
self.__class__)
|
|
else:
|
|
return socket.recvfrom(self, buflen, flags)
|
|
|
|
def recvfrom_into(self, buffer, nbytes=None, flags=0):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
raise ValueError("recvfrom_into not allowed on instances of %s" %
|
|
self.__class__)
|
|
else:
|
|
return socket.recvfrom_into(self, buffer, nbytes, flags)
|
|
|
|
def recvmsg(self, *args, **kwargs):
|
|
raise NotImplementedError("recvmsg not allowed on instances of %s" %
|
|
self.__class__)
|
|
|
|
def recvmsg_into(self, *args, **kwargs):
|
|
raise NotImplementedError("recvmsg_into not allowed on instances of "
|
|
"%s" % self.__class__)
|
|
|
|
def pending(self):
|
|
self._checkClosed()
|
|
if self._sslobj:
|
|
return self._sslobj.pending()
|
|
return 0
|
|
|
|
def shutdown(self, how):
|
|
self._checkClosed()
|
|
self._sslobj = None
|
|
socket.shutdown(self, how)
|
|
|
|
def unwrap(self):
|
|
if not self._sslobj:
|
|
raise ValueError("No SSL wrapper around " + str(self))
|
|
|
|
while True:
|
|
try:
|
|
s = self._sslobj.shutdown()
|
|
break
|
|
except SSLWantReadError:
|
|
# Callers of this method expect to get a socket
|
|
# back, so we can't simply return 0, we have
|
|
# to let these be raised
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._read_event)
|
|
except SSLWantWriteError:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._write_event)
|
|
|
|
self._sslobj = None
|
|
|
|
# The return value of shutting down the SSLObject is the
|
|
# original wrapped socket passed to _wrap_socket, i.e.,
|
|
# _contextawaresock. But that object doesn't have the
|
|
# gevent wrapper around it so it can't be used. We have to
|
|
# wrap it back up with a gevent wrapper.
|
|
assert s is self._sock
|
|
# In the stdlib, SSLSocket subclasses socket.socket and passes itself
|
|
# to _wrap_socket, so it gets itself back. We can't do that, we have to
|
|
# pass our subclass of _socket.socket, _contextawaresock.
|
|
# So ultimately we should return ourself.
|
|
|
|
# See test_ftplib.py:TestTLS_FTPClass.test_ccc
|
|
return self
|
|
|
|
def _real_close(self):
|
|
self._sslobj = None
|
|
# self._closed = True
|
|
socket._real_close(self)
|
|
|
|
def do_handshake(self):
|
|
"""Perform a TLS/SSL handshake."""
|
|
self._check_connected()
|
|
while True:
|
|
try:
|
|
self._sslobj.do_handshake()
|
|
break
|
|
except SSLWantReadError:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._read_event, timeout_exc=_SSLErrorHandshakeTimeout)
|
|
except SSLWantWriteError:
|
|
if self.timeout == 0.0:
|
|
raise
|
|
self._wait(self._write_event, timeout_exc=_SSLErrorHandshakeTimeout)
|
|
|
|
if sys.version_info[:2] < (3, 7) and self._context.check_hostname:
|
|
# In Python 3.7, the underlying OpenSSL name matching is used.
|
|
# The version implemented in Python doesn't understand IDNA encoding.
|
|
if not self.server_hostname:
|
|
raise ValueError("check_hostname needs server_hostname "
|
|
"argument")
|
|
match_hostname(self.getpeercert(), self.server_hostname)
|
|
|
|
def _real_connect(self, addr, connect_ex):
|
|
if self.server_side:
|
|
raise ValueError("can't connect in server-side mode")
|
|
# Here we assume that the socket is client-side, and not
|
|
# connected at the time of the call. We connect it, then wrap it.
|
|
if self._connected:
|
|
raise ValueError("attempt to connect already-connected SSLSocket!")
|
|
self._sslobj = self._context._wrap_socket(self._sock, False, self.server_hostname)
|
|
if self._session is not None: # 3.6+
|
|
self._sslobj = _SSLObject_factory(self._sslobj, owner=self, session=self._session)
|
|
try:
|
|
if connect_ex:
|
|
rc = socket.connect_ex(self, addr)
|
|
else:
|
|
rc = None
|
|
socket.connect(self, addr)
|
|
if not rc:
|
|
if self.do_handshake_on_connect:
|
|
self.do_handshake()
|
|
self._connected = True
|
|
return rc
|
|
except socket_error:
|
|
self._sslobj = None
|
|
raise
|
|
|
|
def connect(self, addr):
|
|
"""Connects to remote ADDR, and then wraps the connection in
|
|
an SSL channel."""
|
|
self._real_connect(addr, False)
|
|
|
|
def connect_ex(self, addr):
|
|
"""Connects to remote ADDR, and then wraps the connection in
|
|
an SSL channel."""
|
|
return self._real_connect(addr, True)
|
|
|
|
def accept(self):
|
|
"""Accepts a new connection from a remote client, and returns
|
|
a tuple containing that new connection wrapped with a server-side
|
|
SSL channel, and the address of the remote client."""
|
|
|
|
newsock, addr = socket.accept(self)
|
|
newsock._drop_events()
|
|
newsock = self._context.wrap_socket(newsock,
|
|
do_handshake_on_connect=self.do_handshake_on_connect,
|
|
suppress_ragged_eofs=self.suppress_ragged_eofs,
|
|
server_side=True)
|
|
return newsock, addr
|
|
|
|
def get_channel_binding(self, cb_type="tls-unique"):
|
|
"""Get channel binding data for current connection. Raise ValueError
|
|
if the requested `cb_type` is not supported. Return bytes of the data
|
|
or None if the data is not available (e.g. before the handshake).
|
|
"""
|
|
if hasattr(self._sslobj, 'get_channel_binding'):
|
|
# 3.7+, and sslobj is not None
|
|
return self._sslobj.get_channel_binding(cb_type)
|
|
if cb_type not in CHANNEL_BINDING_TYPES:
|
|
raise ValueError("Unsupported channel binding type")
|
|
if cb_type != "tls-unique":
|
|
raise NotImplementedError("{0} channel binding type not implemented".format(cb_type))
|
|
if self._sslobj is None:
|
|
return None
|
|
return self._sslobj.tls_unique_cb()
|
|
|
|
|
|
# Python does not support forward declaration of types
|
|
SSLContext.sslsocket_class = SSLSocket
|
|
|
|
# Python 3.2 onwards raise normal timeout errors, not SSLError.
|
|
# See https://bugs.python.org/issue10272
|
|
_SSLErrorReadTimeout = _socket_timeout('The read operation timed out')
|
|
_SSLErrorWriteTimeout = _socket_timeout('The write operation timed out')
|
|
_SSLErrorHandshakeTimeout = _socket_timeout('The handshake operation timed out')
|
|
|
|
|
|
def wrap_socket(sock, keyfile=None, certfile=None,
|
|
server_side=False, cert_reqs=CERT_NONE,
|
|
ssl_version=PROTOCOL_SSLv23, ca_certs=None,
|
|
do_handshake_on_connect=True,
|
|
suppress_ragged_eofs=True,
|
|
ciphers=None):
|
|
|
|
return SSLSocket(sock=sock, keyfile=keyfile, certfile=certfile,
|
|
server_side=server_side, cert_reqs=cert_reqs,
|
|
ssl_version=ssl_version, ca_certs=ca_certs,
|
|
do_handshake_on_connect=do_handshake_on_connect,
|
|
suppress_ragged_eofs=suppress_ragged_eofs,
|
|
ciphers=ciphers)
|
|
|
|
|
|
def get_server_certificate(addr, ssl_version=PROTOCOL_SSLv23, ca_certs=None):
|
|
"""Retrieve the certificate from the server at the specified address,
|
|
and return it as a PEM-encoded string.
|
|
If 'ca_certs' is specified, validate the server cert against it.
|
|
If 'ssl_version' is specified, use it in the connection attempt."""
|
|
|
|
_, _ = addr
|
|
if ca_certs is not None:
|
|
cert_reqs = CERT_REQUIRED
|
|
else:
|
|
cert_reqs = CERT_NONE
|
|
s = create_connection(addr)
|
|
s = wrap_socket(s, ssl_version=ssl_version,
|
|
cert_reqs=cert_reqs, ca_certs=ca_certs)
|
|
dercert = s.getpeercert(True)
|
|
s.close()
|
|
return DER_cert_to_PEM_cert(dercert)
|