mirror of
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30913031d4
The home of 'Abort' is 'error' not 'util' however, a lot of code seems to be confused about that and gives all the credit to 'util' instead of the hardworking 'error'. In a spirit of equity, we break the cycle of injustice and give back to 'error' the respect it deserves. And screw that 'util' poser. For great justice.
523 lines
18 KiB
Python
523 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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from __future__ import absolute_import
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import base64
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import cStringIO
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import httplib
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import os
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import socket
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import urllib
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import urllib2
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from .i18n import _
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from . import (
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error,
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httpconnection as httpconnectionmod,
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keepalive,
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sslutil,
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util,
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)
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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 error.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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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 as 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.wrapsocket(self.sock, None, 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.HTTPConnection):
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response_class = keepalive.HTTPResponse
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default_port = httplib.HTTPS_PORT
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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.HTTPConnection)
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def __init__(self, host, port=None, key_file=None, cert_file=None,
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*args, **kwargs):
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httplib.HTTPConnection.__init__(self, host, port, *args, **kwargs)
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self.key_file = key_file
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self.cert_file = cert_file
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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.wrapsocket(
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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 as 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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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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# experimental config: ui.usehttp2
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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:
|
|
handlers.append(httpshandler(ui))
|
|
|
|
handlers.append(proxyhandler(ui))
|
|
|
|
passmgr = passwordmgr(ui)
|
|
if authinfo is not None:
|
|
passmgr.add_password(*authinfo)
|
|
user, passwd = authinfo[2:4]
|
|
ui.debug('http auth: user %s, password %s\n' %
|
|
(user, passwd and '*' * len(passwd) or 'not set'))
|
|
|
|
handlers.extend((httpbasicauthhandler(passmgr),
|
|
httpdigestauthhandler(passmgr)))
|
|
handlers.extend([h(ui, passmgr) for h in handlerfuncs])
|
|
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)
|