from __future__ import absolute_import import os import re from OpenSSL import SSL from netlib import http_auth, certutils, tcp from .. import utils, platform, version from .primitives import RegularProxyMode, TransparentProxyMode, UpstreamProxyMode, ReverseProxyMode, Socks5ProxyMode TRANSPARENT_SSL_PORTS = [443, 8443] CONF_BASENAME = "mitmproxy" CA_DIR = "~/.mitmproxy" class HostMatcher(object): def __init__(self, patterns=[]): self.patterns = list(patterns) self.regexes = [re.compile(p, re.IGNORECASE) for p in self.patterns] def __call__(self, address): address = tcp.Address.wrap(address) host = "%s:%s" % (address.host, address.port) if any(rex.search(host) for rex in self.regexes): return True else: return False def __nonzero__(self): return bool(self.patterns) class ProxyConfig: def __init__( self, host='', port=8080, server_version=version.NAMEVERSION, cadir=CA_DIR, clientcerts=None, no_upstream_cert=False, body_size_limit=None, mode=None, upstream_server=None, http_form_in=None, http_form_out=None, authenticator=None, ignore_hosts=[], tcp_hosts=[], client_ciphers=None, server_ciphers=None, certs=[], certforward=False, ssl_version_client="secure", ssl_version_server="secure", ssl_ports=TRANSPARENT_SSL_PORTS ): self.host = host self.port = port self.server_version = server_version self.client_ciphers = client_ciphers self.server_ciphers = server_ciphers self.clientcerts = clientcerts self.no_upstream_cert = no_upstream_cert self.body_size_limit = body_size_limit if mode == "transparent": self.mode = TransparentProxyMode(platform.resolver(), ssl_ports) elif mode == "socks5": self.mode = Socks5ProxyMode(ssl_ports) elif mode == "reverse": self.mode = ReverseProxyMode(upstream_server) elif mode == "upstream": self.mode = UpstreamProxyMode(upstream_server) else: self.mode = RegularProxyMode() # Handle manual overrides of the http forms self.mode.http_form_in = http_form_in or self.mode.http_form_in self.mode.http_form_out = http_form_out or self.mode.http_form_out self.check_ignore = HostMatcher(ignore_hosts) self.check_tcp = HostMatcher(tcp_hosts) self.authenticator = authenticator self.cadir = os.path.expanduser(cadir) self.certstore = certutils.CertStore.from_store(self.cadir, CONF_BASENAME) for spec, cert in certs: self.certstore.add_cert_file(spec, cert) self.certforward = certforward self.openssl_client_method, self.openssl_client_options = version_to_openssl(ssl_version_client) self.openssl_server_method, self.openssl_server_options = version_to_openssl(ssl_version_server) self.ssl_ports = ssl_ports sslversion_choices = ("all", "secure", "SSLv2", "SSLv3", "TLSv1", "TLSv1_1", "TLSv1_2") def version_to_openssl(version): """ Convert a reasonable SSL version specification into the format OpenSSL expects. Don't ask... https://bugs.launchpad.net/pyopenssl/+bug/1020632/comments/3 """ if version == "all": return SSL.SSLv23_METHOD, None elif version == "secure": # SSLv23_METHOD + NO_SSLv2 + NO_SSLv3 == TLS 1.0+ # TLSv1_METHOD would be TLS 1.0 only return SSL.SSLv23_METHOD, (SSL.OP_NO_SSLv2 | SSL.OP_NO_SSLv3) elif version in sslversion_choices: return getattr(SSL, "%s_METHOD" % version), None else: raise ValueError("Invalid SSL version: %s" % version) def process_proxy_options(parser, options): body_size_limit = utils.parse_size(options.body_size_limit) c = 0 mode, upstream_server = None, None if options.transparent_proxy: c += 1 if not platform.resolver: return parser.error("Transparent mode not supported on this platform.") mode = "transparent" if options.socks_proxy: c += 1 mode = "socks5" if options.reverse_proxy: c += 1 mode = "reverse" upstream_server = options.reverse_proxy if options.upstream_proxy: c += 1 mode = "upstream" upstream_server = options.upstream_proxy if c > 1: return parser.error("Transparent, SOCKS5, reverse and upstream proxy mode " "are mutually exclusive.") if options.clientcerts: options.clientcerts = os.path.expanduser(options.clientcerts) if not os.path.exists(options.clientcerts) or not os.path.isdir(options.clientcerts): return parser.error( "Client certificate directory does not exist or is not a directory: %s" % options.clientcerts ) if (options.auth_nonanonymous or options.auth_singleuser or options.auth_htpasswd): if options.auth_singleuser: if len(options.auth_singleuser.split(':')) != 2: return parser.error("Invalid single-user specification. Please use the format username:password") username, password = options.auth_singleuser.split(':') password_manager = http_auth.PassManSingleUser(username, password) elif options.auth_nonanonymous: password_manager = http_auth.PassManNonAnon() elif options.auth_htpasswd: try: password_manager = http_auth.PassManHtpasswd(options.auth_htpasswd) except ValueError, v: return parser.error(v.message) authenticator = http_auth.BasicProxyAuth(password_manager, "mitmproxy") else: authenticator = http_auth.NullProxyAuth(None) certs = [] for i in options.certs: parts = i.split("=", 1) if len(parts) == 1: parts = ["*", parts[0]] parts[1] = os.path.expanduser(parts[1]) if not os.path.exists(parts[1]): parser.error("Certificate file does not exist: %s" % parts[1]) certs.append(parts) ssl_ports = options.ssl_ports if options.ssl_ports != TRANSPARENT_SSL_PORTS: # arparse appends to default value by default, strip that off. # see http://bugs.python.org/issue16399 ssl_ports = ssl_ports[len(TRANSPARENT_SSL_PORTS):] return ProxyConfig( host=options.addr, port=options.port, cadir=options.cadir, clientcerts=options.clientcerts, no_upstream_cert=options.no_upstream_cert, body_size_limit=body_size_limit, mode=mode, upstream_server=upstream_server, http_form_in=options.http_form_in, http_form_out=options.http_form_out, ignore_hosts=options.ignore_hosts, tcp_hosts=options.tcp_hosts, authenticator=authenticator, client_ciphers=options.client_ciphers, server_ciphers=options.server_ciphers, certs=certs, certforward=options.certforward, ssl_version_client=options.ssl_version_client, ssl_version_server=options.ssl_version_server, ssl_ports=ssl_ports ) def ssl_option_group(parser): group = parser.add_argument_group("SSL") group.add_argument( "--cert", dest='certs', default=[], type=str, metavar="SPEC", action="append", help='Add an SSL certificate. SPEC is of the form "[domain=]path". ' 'The domain may include a wildcard, and is equal to "*" if not specified. ' 'The file at path is a certificate in PEM format. If a private key is included in the PEM, ' 'it is used, else the default key in the conf dir is used. ' 'The PEM file should contain the full certificate chain, with the leaf certificate as the first entry. ' 'Can be passed multiple times.' ) group.add_argument( "--client-certs", action="store", type=str, dest="clientcerts", default=None, help="Client certificate directory." ) group.add_argument( "--client-ciphers", action="store", type=str, dest="client_ciphers", default=None, help="Proxy client SSL cipher specification." ) group.add_argument( "--server-ciphers", action="store", type=str, dest="server_ciphers", default=None, help="Proxy server SSL cipher specification." ) group.add_argument( "--cert-forward", action="store_true", dest="certforward", default=False, help="Simply forward SSL certificates from upstream." ) group.add_argument( "--ssl-version-client", dest="ssl_version_client", default="secure", action="store", choices=sslversion_choices, help="Set supported SSL/TLS version for client connections. " "SSLv2, SSLv3 and 'all' are INSECURE. Defaults to secure." ) group.add_argument( "--ssl-version-server", dest="ssl_version_server", default="secure", action="store", choices=sslversion_choices, help="Set supported SSL/TLS version for server connections. " "SSLv2, SSLv3 and 'all' are INSECURE. Defaults to secure." ) group.add_argument( "--no-upstream-cert", default=False, action="store_true", dest="no_upstream_cert", help="Don't connect to upstream server to look up certificate details." ) group.add_argument( "--ssl-port", action="append", type=int, dest="ssl_ports", default=list(TRANSPARENT_SSL_PORTS), metavar="PORT", help="Can be passed multiple times. Specify destination ports which are assumed to be SSL. " "Defaults to %s." % str(TRANSPARENT_SSL_PORTS) )