Mercurial > hg
view mercurial/httpclient/socketutil.py @ 24946:c44534209a0a
bookmarks: rename readcurrent to readactive (API)
Today, the terms 'active' and 'current' are interchangeably used throughout the
codebase in reference to the active bookmark (the bookmark that will be updated
with the next commit). This leads to confusion among developers and users.
This patch is part of a series to standardize the usage to 'active' throughout
the mercurial codebase and user interface.
author | Ryan McElroy <rmcelroy@fb.com> |
---|---|
date | Mon, 13 Apr 2015 23:03:13 -0700 |
parents | 59df9e52b5bb |
children | 328739ea70c3 |
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# Copyright 2010, Google Inc. # All rights reserved. # # Redistribution and use in source and binary forms, with or without # modification, are permitted provided that the following conditions are # met: # # * Redistributions of source code must retain the above copyright # notice, this list of conditions and the following disclaimer. # * Redistributions in binary form must reproduce the above # copyright notice, this list of conditions and the following disclaimer # in the documentation and/or other materials provided with the # distribution. # * Neither the name of Google Inc. nor the names of its # contributors may be used to endorse or promote products derived from # this software without specific prior written permission. # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. """Abstraction to simplify socket use for Python < 2.6 This will attempt to use the ssl module and the new socket.create_connection method, but fall back to the old methods if those are unavailable. """ import logging import socket logger = logging.getLogger(__name__) try: import ssl # make demandimporters load the module ssl.wrap_socket # pylint: disable=W0104 have_ssl = True except ImportError: import httplib import urllib2 have_ssl = getattr(urllib2, 'HTTPSHandler', False) ssl = False try: create_connection = socket.create_connection except AttributeError: def create_connection(address): """Backport of socket.create_connection from Python 2.6.""" host, port = address msg = "getaddrinfo returns an empty list" sock = None for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM): af, socktype, proto, unused_canonname, sa = res try: sock = socket.socket(af, socktype, proto) logger.info("connect: (%s, %s)", host, port) sock.connect(sa) except socket.error, msg: logger.info('connect fail: %s %s', host, port) if sock: sock.close() sock = None continue break if not sock: raise socket.error(msg) return sock if ssl: wrap_socket = ssl.wrap_socket CERT_NONE = ssl.CERT_NONE CERT_OPTIONAL = ssl.CERT_OPTIONAL CERT_REQUIRED = ssl.CERT_REQUIRED else: class FakeSocket(httplib.FakeSocket): """Socket wrapper that supports SSL.""" # Silence lint about this goofy backport class # pylint: disable=W0232,E1101,R0903,R0913,C0111 # backport the behavior from Python 2.6, which is to busy wait # on the socket instead of anything nice. Sigh. # See http://bugs.python.org/issue3890 for more info. def recv(self, buflen=1024, flags=0): """ssl-aware wrapper around socket.recv """ if flags != 0: raise ValueError( "non-zero flags not allowed in calls to recv() on %s" % self.__class__) while True: try: return self._ssl.read(buflen) except socket.sslerror, x: if x.args[0] == socket.SSL_ERROR_WANT_READ: continue else: raise x _PROTOCOL_SSLv23 = 2 CERT_NONE = 0 CERT_OPTIONAL = 1 CERT_REQUIRED = 2 # Disable unused-argument because we're making a dumb wrapper # that's like an upstream method. # # pylint: disable=W0613,R0913 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): """Backport of ssl.wrap_socket from Python 2.6.""" if cert_reqs != CERT_NONE and ca_certs: raise CertificateValidationUnsupported( 'SSL certificate validation requires the ssl module' '(included in Python 2.6 and later.)') sslob = socket.ssl(sock) # borrow httplib's workaround for no ssl.wrap_socket sock = FakeSocket(sock, sslob) return sock # pylint: enable=W0613,R0913 class CertificateValidationUnsupported(Exception): """Exception raised when cert validation is requested but unavailable.""" # no-check-code