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Viewing changes to bzrlib/transport/http/_urllib2_wrappers.py

  • Committer: Jelmer Vernooij
  • Date: 2012-02-06 11:36:02 UTC
  • mfrom: (6462 +trunk)
  • mto: This revision was merged to the branch mainline in revision 6463.
  • Revision ID: jelmer@samba.org-20120206113602-yu3j0xe7qbk1szw9
Merge bzr.dev.

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bzrlib/transport/http/_urllib2_wrappers.py
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# Copyright (C) 2006-2011 Canonical Ltd
 
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# Copyright (C) 2006-2012 Canonical Ltd
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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import ssl
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""")
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DEFAULT_CA_PATH = u"/etc/ssl/certs/ca-certificates.crt"
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# Note for packagers: if there is no package providing certs for your platform,
 
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# the curl project produces http://curl.haxx.se/ca/cacert.pem weekly.
 
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_ssl_ca_certs_known_locations = [
 
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    u'/etc/ssl/certs/ca-certificates.crt', # Ubuntu/debian/gentoo
 
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    u'/etc/pki/tls/certs/ca-bundle.crt', # Fedora/CentOS/RH
 
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    u'/etc/ssl/ca-bundle.pem', # OpenSuse
 
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    u'/etc/ssl/cert.pem', # OpenSuse
 
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    u"/usr/local/share/certs/ca-root-nss.crt", # FreeBSD
 
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    # XXX: Needs checking, can't trust the interweb ;) -- vila 2012-01-25
 
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    u'/etc/openssl/certs/ca-certificates.crt', # Solaris
 
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    ]
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def default_ca_certs():
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    if not os.path.exists(DEFAULT_CA_PATH):
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        raise ValueError("default ca certs path %s does not exist" %
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            DEFAULT_CA_PATH)
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    return DEFAULT_CA_PATH
 
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    if sys.platform == 'win32':
 
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        return os.path.join(os.path.dirname(sys.executable), u"ca_bundle.crt")
 
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    elif sys.platform == 'darwin':
 
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        # FIXME: Needs some default value for osx, waiting for osx installers
 
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        # guys feedback -- vila 2012-01-25
 
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        pass
 
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    else:
 
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        # Try known locations for friendly OSes providing the root certificates
 
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        # without making them hard to use for any https client.
 
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        for path in _ssl_ca_certs_known_locations:
 
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            if os.path.exists(path):
 
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                # First found wins
 
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                return path
 
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    # A default path that makes sense and will be mentioned in the error
 
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    # presented to the user, even if not correct for all platforms
 
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    return _ssl_ca_certs_known_locations[0]
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def ca_certs_from_store(path):
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    return path
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def default_cert_reqs():
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    return u"required"
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def cert_reqs_from_store(unicode_str):
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    import ssl
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    try:
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        return {
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            "required": ssl.CERT_REQUIRED,
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            "optional": ssl.CERT_OPTIONAL,
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            "none": ssl.CERT_NONE
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            }[unicode_str]
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    except KeyError:
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        invalid='warning',
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        help="""\
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Path to certification authority certificates to trust.
 
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This should be a valid path to a bundle containing all root Certificate
 
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Authorities used to verify an https server certificate.
 
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Use ssl.cert_reqs=none to disable certificate verification.
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""")
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opt_ssl_cert_reqs = config.Option('ssl.cert_reqs',
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        default=default_cert_reqs,
 
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        default=u"required",
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        from_unicode=cert_reqs_from_store,
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        invalid='error',
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        help="""\
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Possible values:
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 * none: Certificates ignored
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 * optional: Certificates not required, but validated if provided
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 * required: Certificates required, and validated
 
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 * required: Certificates required and validated
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""")
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checked_kerberos = False
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    def connect_to_origin(self):
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        # FIXME JRV 2011-12-18: Use location config here?
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        config_stack = config.GlobalStack()
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        if self.ca_certs is None:
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            ca_certs = config_stack.get('ssl.ca_certs')
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        else:
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            ca_certs = self.ca_certs
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        cert_reqs = config_stack.get('ssl.cert_reqs')
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        if cert_reqs == ssl.CERT_NONE:
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            trace.warning("not checking SSL certificates for %s: %d",
 
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            trace.warning("Not checking SSL certificate for %s: %d",
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                self.host, self.port)
 
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            ca_certs = None
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        else:
 
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            if self.ca_certs is None:
 
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                ca_certs = config_stack.get('ssl.ca_certs')
 
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            else:
 
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                ca_certs = self.ca_certs
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            if ca_certs is None:
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                trace.warning(
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                    "no valid trusted SSL CA certificates file set. See "
 
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                    "No valid trusted SSL CA certificates file set. See "
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                    "'bzr help ssl.ca_certs' for more information on setting "
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                    "trusted CA's.")
 
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                    "trusted CAs.")
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        try:
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            ssl_sock = ssl.wrap_socket(self.sock, self.key_file, self.cert_file,
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                cert_reqs=cert_reqs, ca_certs=ca_certs)
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        except ssl.SSLError, e:
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            if e.errno != ssl.SSL_ERROR_SSL:
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                raise
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            trace.note(
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                "To disable SSL certificate verification, use "
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                "-Ossl.cert_reqs=none. See ``bzr help ssl.ca_certs`` for "
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                "more information on specifying trusted CA certificates.")
 
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                "\n"
 
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                "See `bzr help ssl.ca_certs` for how to specify trusted CA"
 
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                "certificates.\n"
 
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                "Pass -Ossl.cert_reqs=none to disable certificate "
 
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                "verification entirely.\n")
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            raise
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        peer_cert = ssl_sock.getpeercert()
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        if (cert_reqs == ssl.CERT_REQUIRED or
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            (cert_reqs == ssl.CERT_OPTIONAL and peer_cert)):
 
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        if cert_reqs == ssl.CERT_REQUIRED:
 
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            peer_cert = ssl_sock.getpeercert()
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            match_hostname(peer_cert, self.host)
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        # Wrap the ssl socket before anybody use it