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# 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 os
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import socket
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import sys
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from .i18n import _
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from . import (
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encoding,
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error,
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httpconnection as httpconnectionmod,
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keepalive,
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pycompat,
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sslutil,
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urllibcompat,
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util,
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)
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from .utils import (
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stringutil,
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)
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httplib = util.httplib
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stringio = util.stringio
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urlerr = util.urlerr
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urlreq = util.urlreq
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def escape(s, quote=None):
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'''Replace special characters "&", "<" and ">" to HTML-safe sequences.
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If the optional flag quote is true, the quotation mark character (")
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is also translated.
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This is the same as cgi.escape in Python, but always operates on
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bytes, whereas cgi.escape in Python 3 only works on unicodes.
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'''
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s = s.replace(b"&", b"&")
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s = s.replace(b"<", b"<")
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s = s.replace(b">", b">")
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if quote:
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s = s.replace(b'"', b""")
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return s
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class passwordmgr(object):
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def __init__(self, ui, passwddb):
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self.ui = ui
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self.passwddb = passwddb
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def add_password(self, realm, uri, user, passwd):
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return self.passwddb.add_password(realm, uri, user, passwd)
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def find_user_password(self, realm, authuri):
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authinfo = self.passwddb.find_user_password(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(pycompat.bytesurl(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(bytes(u)))
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self.ui.write(_("http authorization required for %s\n") %
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util.hidepassword(bytes(u)))
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self.ui.write(_("realm: %s\n") % pycompat.bytesurl(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.passwddb.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 self.passwddb.find_user_password(None, authuri)
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class proxyhandler(urlreq.proxyhandler):
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def __init__(self, ui):
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proxyurl = (ui.config("http_proxy", "host") or
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encoding.environ.get('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 encoding.environ.get("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 = bytes(proxy)
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proxies = {'http': proxyurl, 'https': proxyurl}
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ui.debug('proxying through %s\n' % util.hidepassword(proxyurl))
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else:
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proxies = {}
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urlreq.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 = urllibcompat.gethost(req).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 urlreq.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(urlreq, 'httpshandler')
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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 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 = urllibcompat.getselector(req)
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new_tunnel = False
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if new_tunnel or tunnel_host == urllibcompat.getfullurl(req): # 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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# skip lines that are all whitespace
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list(iter(lambda: res.fp.readline().strip(), ''))
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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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# skip lines until we find a blank line
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list(iter(res.fp.readline, '\r\n'))
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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(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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class logginghttpconnection(keepalive.HTTPConnection):
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def __init__(self, createconn, *args, **kwargs):
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keepalive.HTTPConnection.__init__(self, *args, **kwargs)
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self._create_connection = createconn
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if sys.version_info < (2, 7, 7):
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# copied from 2.7.14, since old implementations directly call
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# socket.create_connection()
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def connect(self):
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self.sock = self._create_connection((self.host, self.port),
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self.timeout,
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self.source_address)
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if self._tunnel_host:
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self._tunnel()
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class logginghttphandler(httphandler):
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"""HTTP handler that logs socket I/O."""
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def __init__(self, logfh, name, observeropts):
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super(logginghttphandler, self).__init__()
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self._logfh = logfh
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self._logname = name
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self._observeropts = observeropts
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# do_open() calls the passed class to instantiate an HTTPConnection. We
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# pass in a callable method that creates a custom HTTPConnection instance
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# whose callback to create the socket knows how to proxy the socket.
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def http_open(self, req):
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return self.do_open(self._makeconnection, req)
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def _makeconnection(self, *args, **kwargs):
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def createconnection(*args, **kwargs):
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sock = socket.create_connection(*args, **kwargs)
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return util.makeloggingsocket(self._logfh, sock, self._logname,
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**self._observeropts)
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return logginghttpconnection(createconnection, *args, **kwargs)
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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 = socket.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, ui=self.ui,
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serverhostname=host)
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sslutil.validatesocket(self.sock)
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class httpshandler(keepalive.KeepAliveHandler, urlreq.httpshandler):
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def __init__(self, ui):
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keepalive.KeepAliveHandler.__init__(self)
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urlreq.httpshandler.__init__(self)
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self.ui = ui
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self.pwmgr = passwordmgr(self.ui,
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self.ui.httppasswordmgrdb)
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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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# urllibcompat.getfullurl() does not contain credentials
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# and we may need them to match the certificates.
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url = urllibcompat.getfullurl(req)
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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(urlreq.httpdigestauthhandler):
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def __init__(self, *args, **kwargs):
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urlreq.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.
|
|
|
pass
|
|
|
|
|
|
def http_error_auth_reqed(self, auth_header, host, req, headers):
|
|
|
# Reset the retry counter once for each request.
|
|
|
if req is not self.retried_req:
|
|
|
self.retried_req = req
|
|
|
self.retried = 0
|
|
|
return urlreq.httpdigestauthhandler.http_error_auth_reqed(
|
|
|
self, auth_header, host, req, headers)
|
|
|
|
|
|
class httpbasicauthhandler(urlreq.httpbasicauthhandler):
|
|
|
def __init__(self, *args, **kwargs):
|
|
|
self.auth = None
|
|
|
urlreq.httpbasicauthhandler.__init__(self, *args, **kwargs)
|
|
|
self.retried_req = None
|
|
|
|
|
|
def http_request(self, request):
|
|
|
if self.auth:
|
|
|
request.add_unredirected_header(self.auth_header, self.auth)
|
|
|
|
|
|
return request
|
|
|
|
|
|
def https_request(self, request):
|
|
|
if self.auth:
|
|
|
request.add_unredirected_header(self.auth_header, self.auth)
|
|
|
|
|
|
return request
|
|
|
|
|
|
def reset_retry_count(self):
|
|
|
# Python 2.6.5 will call this on 401 or 407 errors and thus loop
|
|
|
# forever. We disable reset_retry_count completely and reset in
|
|
|
# http_error_auth_reqed instead.
|
|
|
pass
|
|
|
|
|
|
def http_error_auth_reqed(self, auth_header, host, req, headers):
|
|
|
# Reset the retry counter once for each request.
|
|
|
if req is not self.retried_req:
|
|
|
self.retried_req = req
|
|
|
self.retried = 0
|
|
|
return urlreq.httpbasicauthhandler.http_error_auth_reqed(
|
|
|
self, auth_header, host, req, headers)
|
|
|
|
|
|
def retry_http_basic_auth(self, host, req, realm):
|
|
|
user, pw = self.passwd.find_user_password(
|
|
|
realm, urllibcompat.getfullurl(req))
|
|
|
if pw is not None:
|
|
|
raw = "%s:%s" % (pycompat.bytesurl(user), pycompat.bytesurl(pw))
|
|
|
auth = r'Basic %s' % pycompat.strurl(base64.b64encode(raw).strip())
|
|
|
if req.get_header(self.auth_header, None) == auth:
|
|
|
return None
|
|
|
self.auth = auth
|
|
|
req.add_unredirected_header(self.auth_header, auth)
|
|
|
return self.parent.open(req)
|
|
|
else:
|
|
|
return None
|
|
|
|
|
|
class cookiehandler(urlreq.basehandler):
|
|
|
def __init__(self, ui):
|
|
|
self.cookiejar = None
|
|
|
|
|
|
cookiefile = ui.config('auth', 'cookiefile')
|
|
|
if not cookiefile:
|
|
|
return
|
|
|
|
|
|
cookiefile = util.expandpath(cookiefile)
|
|
|
try:
|
|
|
cookiejar = util.cookielib.MozillaCookieJar(
|
|
|
pycompat.fsdecode(cookiefile))
|
|
|
cookiejar.load()
|
|
|
self.cookiejar = cookiejar
|
|
|
except util.cookielib.LoadError as e:
|
|
|
ui.warn(_('(error loading cookie file %s: %s; continuing without '
|
|
|
'cookies)\n') % (cookiefile, stringutil.forcebytestr(e)))
|
|
|
|
|
|
def http_request(self, request):
|
|
|
if self.cookiejar:
|
|
|
self.cookiejar.add_cookie_header(request)
|
|
|
|
|
|
return request
|
|
|
|
|
|
def https_request(self, request):
|
|
|
if self.cookiejar:
|
|
|
self.cookiejar.add_cookie_header(request)
|
|
|
|
|
|
return request
|
|
|
|
|
|
handlerfuncs = []
|
|
|
|
|
|
def opener(ui, authinfo=None, useragent=None, loggingfh=None,
|
|
|
loggingname=b's', loggingopts=None, sendaccept=True):
|
|
|
'''
|
|
|
construct an opener suitable for urllib2
|
|
|
authinfo will be added to the password manager
|
|
|
|
|
|
The opener can be configured to log socket events if the various
|
|
|
``logging*`` arguments are specified.
|
|
|
|
|
|
``loggingfh`` denotes a file object to log events to.
|
|
|
``loggingname`` denotes the name of the to print when logging.
|
|
|
``loggingopts`` is a dict of keyword arguments to pass to the constructed
|
|
|
``util.socketobserver`` instance.
|
|
|
|
|
|
``sendaccept`` allows controlling whether the ``Accept`` request header
|
|
|
is sent. The header is sent by default.
|
|
|
'''
|
|
|
handlers = []
|
|
|
|
|
|
if loggingfh:
|
|
|
handlers.append(logginghttphandler(loggingfh, loggingname,
|
|
|
loggingopts or {}))
|
|
|
# We don't yet support HTTPS when logging I/O. If we attempt to open
|
|
|
# an HTTPS URL, we'll likely fail due to unknown protocol.
|
|
|
|
|
|
else:
|
|
|
handlers.append(httphandler())
|
|
|
if has_https:
|
|
|
handlers.append(httpshandler(ui))
|
|
|
|
|
|
handlers.append(proxyhandler(ui))
|
|
|
|
|
|
passmgr = passwordmgr(ui, ui.httppasswordmgrdb)
|
|
|
if authinfo is not None:
|
|
|
realm, uris, user, passwd = authinfo
|
|
|
saveduser, savedpass = passmgr.find_stored_password(uris[0])
|
|
|
if user != saveduser or passwd:
|
|
|
passmgr.add_password(realm, uris, user, passwd)
|
|
|
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])
|
|
|
handlers.append(cookiehandler(ui))
|
|
|
opener = urlreq.buildopener(*handlers)
|
|
|
|
|
|
# The user agent should should *NOT* be used by servers for e.g.
|
|
|
# protocol detection or feature negotiation: there are other
|
|
|
# facilities for that.
|
|
|
#
|
|
|
# "mercurial/proto-1.0" was the original user agent string and
|
|
|
# exists for backwards compatibility reasons.
|
|
|
#
|
|
|
# The "(Mercurial %s)" string contains the distribution
|
|
|
# name and version. Other client implementations should choose their
|
|
|
# own distribution name. Since servers should not be using the user
|
|
|
# agent string for anything, clients should be able to define whatever
|
|
|
# user agent they deem appropriate.
|
|
|
#
|
|
|
# The custom user agent is for lfs, because unfortunately some servers
|
|
|
# do look at this value.
|
|
|
if not useragent:
|
|
|
agent = 'mercurial/proto-1.0 (Mercurial %s)' % util.version()
|
|
|
opener.addheaders = [(r'User-agent', pycompat.sysstr(agent))]
|
|
|
else:
|
|
|
opener.addheaders = [(r'User-agent', pycompat.sysstr(useragent))]
|
|
|
|
|
|
# This header should only be needed by wire protocol requests. But it has
|
|
|
# been sent on all requests since forever. We keep sending it for backwards
|
|
|
# compatibility reasons. Modern versions of the wire protocol use
|
|
|
# X-HgProto-<N> for advertising client support.
|
|
|
if sendaccept:
|
|
|
opener.addheaders.append((r'Accept', r'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://' + pycompat.bytesurl(urlreq.pathname2url(path))
|
|
|
authinfo = None
|
|
|
return opener(ui, authinfo).open(pycompat.strurl(url_), data)
|
|
|
|
