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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)
)
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