Mercurial > hg
view mercurial/sslutil.py @ 14252:19067884c5f5
revlog: calculate base revisions iteratively
This is in preparation for generaldelta, where the revlog entry base field is
reinterpreted as the deltaparent. For that reason we also rename the base
function to chainbase.
Without generaldelta, performance is unaffected, but generaldelta will suffer
from this in _addrevision, since delta chains will be walked repeatedly.
A cache has been added to eliminate this problem completely.
author | Sune Foldager <cryo@cyanite.org> |
---|---|
date | Sat, 07 May 2011 22:40:14 +0200 |
parents | 5fa21960b2f4 |
children | 64dfbe576455 |
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# sslutil.py - SSL handling for mercurial # # Copyright 2005, 2006, 2007, 2008 Matt Mackall <mpm@selenic.com> # Copyright 2006, 2007 Alexis S. L. Carvalho <alexis@cecm.usp.br> # Copyright 2006 Vadim Gelfer <vadim.gelfer@gmail.com> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. import os from mercurial import util from mercurial.i18n import _ try: # avoid using deprecated/broken FakeSocket in python 2.6 import ssl ssl_wrap_socket = ssl.wrap_socket CERT_REQUIRED = ssl.CERT_REQUIRED except ImportError: CERT_REQUIRED = 2 def ssl_wrap_socket(sock, key_file, cert_file, cert_reqs=CERT_REQUIRED, ca_certs=None): if ca_certs: raise util.Abort(_( 'certificate checking requires Python 2.6')) ssl = socket.ssl(sock, key_file, cert_file) return httplib.FakeSocket(sock, ssl) def _verifycert(cert, hostname): '''Verify that cert (in socket.getpeercert() format) matches hostname. CRLs is not handled. Returns error message if any problems are found and None on success. ''' if not cert: return _('no certificate received') dnsname = hostname.lower() def matchdnsname(certname): return (certname == dnsname or '.' in dnsname and certname == '*.' + dnsname.split('.', 1)[1]) san = cert.get('subjectAltName', []) if san: certnames = [value.lower() for key, value in san if key == 'DNS'] for name in certnames: if matchdnsname(name): return None return _('certificate is for %s') % ', '.join(certnames) # subject is only checked when subjectAltName is empty for s in cert.get('subject', []): key, value = s[0] if key == 'commonName': try: # 'subject' entries are unicode certname = value.lower().encode('ascii') except UnicodeEncodeError: return _('IDN in certificate not supported') if matchdnsname(certname): return None return _('certificate is for %s') % certname return _('no commonName or subjectAltName found in certificate') # CERT_REQUIRED means fetch the cert from the server all the time AND # validate it against the CA store provided in web.cacerts. # # We COMPLETELY ignore CERT_REQUIRED on Python <= 2.5, as it's totally # busted on those versions. def sslkwargs(ui, host): cacerts = ui.config('web', 'cacerts') hostfingerprint = ui.config('hostfingerprints', host) if cacerts and not hostfingerprint: cacerts = util.expandpath(cacerts) if not os.path.exists(cacerts): raise util.Abort(_('could not find web.cacerts: %s') % cacerts) return {'ca_certs': cacerts, 'cert_reqs': CERT_REQUIRED, } return {} class validator(object): def __init__(self, ui, host): self.ui = ui self.host = host def __call__(self, sock): host = self.host cacerts = self.ui.config('web', 'cacerts') hostfingerprint = self.ui.config('hostfingerprints', host) if cacerts and not hostfingerprint: msg = _verifycert(sock.getpeercert(), host) if msg: raise util.Abort(_('%s certificate error: %s ' '(use --insecure to connect ' 'insecurely)') % (host, msg)) self.ui.debug('%s certificate successfully verified\n' % host) else: if getattr(sock, 'getpeercert', False): peercert = sock.getpeercert(True) peerfingerprint = util.sha1(peercert).hexdigest() nicefingerprint = ":".join([peerfingerprint[x:x + 2] for x in xrange(0, len(peerfingerprint), 2)]) if hostfingerprint: if peerfingerprint.lower() != \ hostfingerprint.replace(':', '').lower(): raise util.Abort(_('invalid certificate for %s ' 'with fingerprint %s') % (host, nicefingerprint)) self.ui.debug('%s certificate matched fingerprint %s\n' % (host, nicefingerprint)) else: self.ui.warn(_('warning: %s certificate ' 'with fingerprint %s not verified ' '(check hostfingerprints or web.cacerts ' 'config setting)\n') % (host, nicefingerprint)) else: # python 2.5 ? if hostfingerprint: raise util.Abort(_('no certificate for %s with ' 'configured hostfingerprint') % host) self.ui.warn(_('warning: %s certificate not verified ' '(check web.cacerts config setting)\n') % host)