mirror of
https://github.com/facebook/sapling.git
synced 2024-10-10 00:45:18 +03:00
04223e707f
SNI is a common way of sharing servers across multiple domains using separate SSL certificates. As of Python 2.7.9 SSLContext has been backported from Python 3. This patch changes sslutil's ssl_wrap_socket to use SSLContext and take a server hostname as and argument. It also changes the url module to make use of this argument. The new code for 2.7.9 achieves it's task by attempting to get the SSLContext object from the ssl module. If this fails the try/except goes back to what was there before with the exception that the ssl_wrap_socket functions take a server_hostname argument that doesn't get used. Assuming the SSLContext exists, the arguments to wrap_socket at the module level are emulated on the SSLContext. The SSLContext is initialized with the specified ssl_version. If certfile is not None load_cert_chain is called with certfile and keyfile. keyfile being None is not a problem, load_cert_chain will simply expect the private key to be in the certificate file. verify_mode is set to cert_reqs. If ca_certs is not None load_verify_locations is called with ca_certs as the cafile. Finally the wrap_socket method of the SSLContext is called with the socket and server hostname. Finally, this fails test-check-commit-hg.t because the "new" function ssl_wrap_socket has underscores in its names and underscores in its arguments. All the underscore identifiers are taken from the other functions and as such can't be changed to match naming conventions.
511 lines
18 KiB
Python
511 lines
18 KiB
Python
# url.py - HTTP handling for mercurial
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#
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# Copyright 2005, 2006, 2007, 2008 Matt Mackall <mpm@selenic.com>
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# Copyright 2006, 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br>
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# Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com>
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2 or any later version.
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import urllib, urllib2, httplib, os, socket, cStringIO, base64
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from i18n import _
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import keepalive, util, sslutil
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import httpconnection as httpconnectionmod
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class passwordmgr(urllib2.HTTPPasswordMgrWithDefaultRealm):
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def __init__(self, ui):
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urllib2.HTTPPasswordMgrWithDefaultRealm.__init__(self)
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self.ui = ui
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def find_user_password(self, realm, authuri):
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authinfo = urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
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self, realm, authuri)
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user, passwd = authinfo
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if user and passwd:
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self._writedebug(user, passwd)
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return (user, passwd)
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if not user or not passwd:
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res = httpconnectionmod.readauthforuri(self.ui, authuri, user)
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if res:
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group, auth = res
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user, passwd = auth.get('username'), auth.get('password')
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self.ui.debug("using auth.%s.* for authentication\n" % group)
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if not user or not passwd:
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u = util.url(authuri)
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u.query = None
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if not self.ui.interactive():
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raise util.Abort(_('http authorization required for %s') %
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util.hidepassword(str(u)))
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self.ui.write(_("http authorization required for %s\n") %
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util.hidepassword(str(u)))
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self.ui.write(_("realm: %s\n") % realm)
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if user:
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self.ui.write(_("user: %s\n") % user)
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else:
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user = self.ui.prompt(_("user:"), default=None)
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if not passwd:
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passwd = self.ui.getpass()
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self.add_password(realm, authuri, user, passwd)
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self._writedebug(user, passwd)
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return (user, passwd)
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def _writedebug(self, user, passwd):
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msg = _('http auth: user %s, password %s\n')
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self.ui.debug(msg % (user, passwd and '*' * len(passwd) or 'not set'))
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def find_stored_password(self, authuri):
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return urllib2.HTTPPasswordMgrWithDefaultRealm.find_user_password(
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self, None, authuri)
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class proxyhandler(urllib2.ProxyHandler):
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def __init__(self, ui):
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proxyurl = ui.config("http_proxy", "host") or os.getenv('http_proxy')
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# XXX proxyauthinfo = None
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if proxyurl:
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# proxy can be proper url or host[:port]
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if not (proxyurl.startswith('http:') or
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proxyurl.startswith('https:')):
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proxyurl = 'http://' + proxyurl + '/'
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proxy = util.url(proxyurl)
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if not proxy.user:
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proxy.user = ui.config("http_proxy", "user")
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proxy.passwd = ui.config("http_proxy", "passwd")
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# see if we should use a proxy for this url
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no_list = ["localhost", "127.0.0.1"]
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no_list.extend([p.lower() for
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p in ui.configlist("http_proxy", "no")])
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no_list.extend([p.strip().lower() for
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p in os.getenv("no_proxy", '').split(',')
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if p.strip()])
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# "http_proxy.always" config is for running tests on localhost
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if ui.configbool("http_proxy", "always"):
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self.no_list = []
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else:
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self.no_list = no_list
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proxyurl = str(proxy)
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proxies = {'http': proxyurl, 'https': proxyurl}
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ui.debug('proxying through http://%s:%s\n' %
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(proxy.host, proxy.port))
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else:
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proxies = {}
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# urllib2 takes proxy values from the environment and those
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# will take precedence if found. So, if there's a config entry
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# defining a proxy, drop the environment ones
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if ui.config("http_proxy", "host"):
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for env in ["HTTP_PROXY", "http_proxy", "no_proxy"]:
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try:
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if env in os.environ:
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del os.environ[env]
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except OSError:
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pass
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urllib2.ProxyHandler.__init__(self, proxies)
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self.ui = ui
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def proxy_open(self, req, proxy, type_):
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host = req.get_host().split(':')[0]
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for e in self.no_list:
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if host == e:
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return None
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if e.startswith('*.') and host.endswith(e[2:]):
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return None
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if e.startswith('.') and host.endswith(e[1:]):
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return None
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# work around a bug in Python < 2.4.2
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# (it leaves a "\n" at the end of Proxy-authorization headers)
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baseclass = req.__class__
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class _request(baseclass):
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def add_header(self, key, val):
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if key.lower() == 'proxy-authorization':
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val = val.strip()
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return baseclass.add_header(self, key, val)
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req.__class__ = _request
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return urllib2.ProxyHandler.proxy_open(self, req, proxy, type_)
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def _gen_sendfile(orgsend):
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def _sendfile(self, data):
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# send a file
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if isinstance(data, httpconnectionmod.httpsendfile):
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# if auth required, some data sent twice, so rewind here
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data.seek(0)
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for chunk in util.filechunkiter(data):
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orgsend(self, chunk)
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else:
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orgsend(self, data)
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return _sendfile
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has_https = util.safehasattr(urllib2, 'HTTPSHandler')
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if has_https:
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try:
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_create_connection = socket.create_connection
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except AttributeError:
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_GLOBAL_DEFAULT_TIMEOUT = object()
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def _create_connection(address, timeout=_GLOBAL_DEFAULT_TIMEOUT,
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source_address=None):
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# lifted from Python 2.6
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msg = "getaddrinfo returns an empty list"
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host, port = address
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for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
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af, socktype, proto, canonname, sa = res
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sock = None
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try:
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sock = socket.socket(af, socktype, proto)
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if timeout is not _GLOBAL_DEFAULT_TIMEOUT:
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sock.settimeout(timeout)
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if source_address:
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sock.bind(source_address)
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sock.connect(sa)
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return sock
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except socket.error, msg:
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if sock is not None:
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sock.close()
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raise socket.error(msg)
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class httpconnection(keepalive.HTTPConnection):
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# must be able to send big bundle as stream.
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send = _gen_sendfile(keepalive.HTTPConnection.send)
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def connect(self):
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if has_https and self.realhostport: # use CONNECT proxy
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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self.sock.connect((self.host, self.port))
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if _generic_proxytunnel(self):
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# we do not support client X.509 certificates
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self.sock = sslutil.ssl_wrap_socket(self.sock, None, None,
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serverhostname=self.host)
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else:
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keepalive.HTTPConnection.connect(self)
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def getresponse(self):
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proxyres = getattr(self, 'proxyres', None)
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if proxyres:
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if proxyres.will_close:
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self.close()
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self.proxyres = None
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return proxyres
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return keepalive.HTTPConnection.getresponse(self)
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# general transaction handler to support different ways to handle
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# HTTPS proxying before and after Python 2.6.3.
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def _generic_start_transaction(handler, h, req):
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tunnel_host = getattr(req, '_tunnel_host', None)
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if tunnel_host:
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if tunnel_host[:7] not in ['http://', 'https:/']:
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tunnel_host = 'https://' + tunnel_host
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new_tunnel = True
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else:
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tunnel_host = req.get_selector()
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new_tunnel = False
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if new_tunnel or tunnel_host == req.get_full_url(): # has proxy
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u = util.url(tunnel_host)
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if new_tunnel or u.scheme == 'https': # only use CONNECT for HTTPS
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h.realhostport = ':'.join([u.host, (u.port or '443')])
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h.headers = req.headers.copy()
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h.headers.update(handler.parent.addheaders)
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return
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h.realhostport = None
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h.headers = None
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def _generic_proxytunnel(self):
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proxyheaders = dict(
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[(x, self.headers[x]) for x in self.headers
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if x.lower().startswith('proxy-')])
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self.send('CONNECT %s HTTP/1.0\r\n' % self.realhostport)
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for header in proxyheaders.iteritems():
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self.send('%s: %s\r\n' % header)
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self.send('\r\n')
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# majority of the following code is duplicated from
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# httplib.HTTPConnection as there are no adequate places to
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# override functions to provide the needed functionality
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res = self.response_class(self.sock,
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strict=self.strict,
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method=self._method)
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while True:
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version, status, reason = res._read_status()
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if status != httplib.CONTINUE:
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break
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while True:
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skip = res.fp.readline().strip()
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if not skip:
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break
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res.status = status
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res.reason = reason.strip()
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if res.status == 200:
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while True:
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line = res.fp.readline()
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if line == '\r\n':
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break
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return True
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if version == 'HTTP/1.0':
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res.version = 10
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elif version.startswith('HTTP/1.'):
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res.version = 11
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elif version == 'HTTP/0.9':
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res.version = 9
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else:
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raise httplib.UnknownProtocol(version)
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if res.version == 9:
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res.length = None
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res.chunked = 0
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res.will_close = 1
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res.msg = httplib.HTTPMessage(cStringIO.StringIO())
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return False
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res.msg = httplib.HTTPMessage(res.fp)
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res.msg.fp = None
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# are we using the chunked-style of transfer encoding?
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trenc = res.msg.getheader('transfer-encoding')
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if trenc and trenc.lower() == "chunked":
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res.chunked = 1
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res.chunk_left = None
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else:
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res.chunked = 0
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# will the connection close at the end of the response?
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res.will_close = res._check_close()
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# do we have a Content-Length?
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# NOTE: RFC 2616, section 4.4, #3 says we ignore this if
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# transfer-encoding is "chunked"
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length = res.msg.getheader('content-length')
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if length and not res.chunked:
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try:
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res.length = int(length)
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except ValueError:
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res.length = None
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else:
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if res.length < 0: # ignore nonsensical negative lengths
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res.length = None
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else:
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res.length = None
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# does the body have a fixed length? (of zero)
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if (status == httplib.NO_CONTENT or status == httplib.NOT_MODIFIED or
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100 <= status < 200 or # 1xx codes
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res._method == 'HEAD'):
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res.length = 0
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# if the connection remains open, and we aren't using chunked, and
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# a content-length was not provided, then assume that the connection
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# WILL close.
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if (not res.will_close and
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not res.chunked and
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res.length is None):
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res.will_close = 1
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self.proxyres = res
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return False
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class httphandler(keepalive.HTTPHandler):
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def http_open(self, req):
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return self.do_open(httpconnection, req)
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def _start_transaction(self, h, req):
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_generic_start_transaction(self, h, req)
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return keepalive.HTTPHandler._start_transaction(self, h, req)
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if has_https:
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class httpsconnection(httplib.HTTPSConnection):
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response_class = keepalive.HTTPResponse
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# must be able to send big bundle as stream.
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send = _gen_sendfile(keepalive.safesend)
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getresponse = keepalive.wrapgetresponse(httplib.HTTPSConnection)
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def connect(self):
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self.sock = _create_connection((self.host, self.port))
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host = self.host
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if self.realhostport: # use CONNECT proxy
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_generic_proxytunnel(self)
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host = self.realhostport.rsplit(':', 1)[0]
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self.sock = sslutil.ssl_wrap_socket(
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self.sock, self.key_file, self.cert_file, serverhostname=host,
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**sslutil.sslkwargs(self.ui, host))
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sslutil.validator(self.ui, host)(self.sock)
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class httpshandler(keepalive.KeepAliveHandler, urllib2.HTTPSHandler):
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def __init__(self, ui):
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keepalive.KeepAliveHandler.__init__(self)
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urllib2.HTTPSHandler.__init__(self)
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self.ui = ui
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self.pwmgr = passwordmgr(self.ui)
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def _start_transaction(self, h, req):
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_generic_start_transaction(self, h, req)
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return keepalive.KeepAliveHandler._start_transaction(self, h, req)
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def https_open(self, req):
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# req.get_full_url() does not contain credentials and we may
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# need them to match the certificates.
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url = req.get_full_url()
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user, password = self.pwmgr.find_stored_password(url)
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res = httpconnectionmod.readauthforuri(self.ui, url, user)
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if res:
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group, auth = res
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self.auth = auth
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self.ui.debug("using auth.%s.* for authentication\n" % group)
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else:
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self.auth = None
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return self.do_open(self._makeconnection, req)
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def _makeconnection(self, host, port=None, *args, **kwargs):
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keyfile = None
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certfile = None
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if len(args) >= 1: # key_file
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keyfile = args[0]
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if len(args) >= 2: # cert_file
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certfile = args[1]
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args = args[2:]
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# if the user has specified different key/cert files in
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# hgrc, we prefer these
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if self.auth and 'key' in self.auth and 'cert' in self.auth:
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keyfile = self.auth['key']
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certfile = self.auth['cert']
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conn = httpsconnection(host, port, keyfile, certfile, *args,
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**kwargs)
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conn.ui = self.ui
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return conn
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class httpdigestauthhandler(urllib2.HTTPDigestAuthHandler):
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def __init__(self, *args, **kwargs):
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urllib2.HTTPDigestAuthHandler.__init__(self, *args, **kwargs)
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self.retried_req = None
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def reset_retry_count(self):
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# Python 2.6.5 will call this on 401 or 407 errors and thus loop
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# forever. We disable reset_retry_count completely and reset in
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# http_error_auth_reqed instead.
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pass
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def http_error_auth_reqed(self, auth_header, host, req, headers):
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# Reset the retry counter once for each request.
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if req is not self.retried_req:
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self.retried_req = req
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self.retried = 0
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# In python < 2.5 AbstractDigestAuthHandler raises a ValueError if
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# it doesn't know about the auth type requested. This can happen if
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# somebody is using BasicAuth and types a bad password.
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try:
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return urllib2.HTTPDigestAuthHandler.http_error_auth_reqed(
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self, auth_header, host, req, headers)
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except ValueError, inst:
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arg = inst.args[0]
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if arg.startswith("AbstractDigestAuthHandler doesn't know "):
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return
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raise
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class httpbasicauthhandler(urllib2.HTTPBasicAuthHandler):
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def __init__(self, *args, **kwargs):
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self.auth = None
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urllib2.HTTPBasicAuthHandler.__init__(self, *args, **kwargs)
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self.retried_req = None
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def http_request(self, request):
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if self.auth:
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request.add_unredirected_header(self.auth_header, self.auth)
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return request
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def https_request(self, request):
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if self.auth:
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request.add_unredirected_header(self.auth_header, self.auth)
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return request
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def reset_retry_count(self):
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# Python 2.6.5 will call this on 401 or 407 errors and thus loop
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# forever. We disable reset_retry_count completely and reset in
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# http_error_auth_reqed instead.
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pass
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def http_error_auth_reqed(self, auth_header, host, req, headers):
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# Reset the retry counter once for each request.
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if req is not self.retried_req:
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self.retried_req = req
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self.retried = 0
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return urllib2.HTTPBasicAuthHandler.http_error_auth_reqed(
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self, auth_header, host, req, headers)
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def retry_http_basic_auth(self, host, req, realm):
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user, pw = self.passwd.find_user_password(realm, req.get_full_url())
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if pw is not None:
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raw = "%s:%s" % (user, pw)
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auth = 'Basic %s' % base64.b64encode(raw).strip()
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if req.headers.get(self.auth_header, None) == auth:
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return None
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self.auth = auth
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req.add_unredirected_header(self.auth_header, auth)
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return self.parent.open(req)
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else:
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return None
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handlerfuncs = []
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|
|
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def opener(ui, authinfo=None):
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'''
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|
construct an opener suitable for urllib2
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authinfo will be added to the password manager
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|
'''
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|
if ui.configbool('ui', 'usehttp2', False):
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handlers = [httpconnectionmod.http2handler(ui, passwordmgr(ui))]
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else:
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|
handlers = [httphandler()]
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if has_https:
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|
handlers.append(httpshandler(ui))
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|
|
|
handlers.append(proxyhandler(ui))
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|
|
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passmgr = passwordmgr(ui)
|
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if authinfo is not None:
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|
passmgr.add_password(*authinfo)
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|
user, passwd = authinfo[2:4]
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|
ui.debug('http auth: user %s, password %s\n' %
|
|
(user, passwd and '*' * len(passwd) or 'not set'))
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|
|
|
handlers.extend((httpbasicauthhandler(passmgr),
|
|
httpdigestauthhandler(passmgr)))
|
|
handlers.extend([h(ui, passmgr) for h in handlerfuncs])
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|
opener = urllib2.build_opener(*handlers)
|
|
|
|
# 1.0 here is the _protocol_ version
|
|
opener.addheaders = [('User-agent', 'mercurial/proto-1.0')]
|
|
opener.addheaders.append(('Accept', 'application/mercurial-0.1'))
|
|
return opener
|
|
|
|
def open(ui, url_, data=None):
|
|
u = util.url(url_)
|
|
if u.scheme:
|
|
u.scheme = u.scheme.lower()
|
|
url_, authinfo = u.authinfo()
|
|
else:
|
|
path = util.normpath(os.path.abspath(url_))
|
|
url_ = 'file://' + urllib.pathname2url(path)
|
|
authinfo = None
|
|
return opener(ui, authinfo).open(url_, data)
|