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from __future__ import absolute_import, print_function, division
import collections
import os
import re
import six
from OpenSSL import SSL, crypto
from mitmproxy import platform
from mitmproxy import exceptions
from netlib import certutils
from netlib import tcp
from netlib.http import authentication
CONF_BASENAME = "mitmproxy"
# We manually need to specify this, otherwise OpenSSL may select a non-HTTP2 cipher by default.
# https://mozilla.github.io/server-side-tls/ssl-config-generator/?server=apache-2.2.15&openssl=1.0.2&hsts=yes&profile=old
DEFAULT_CLIENT_CIPHERS = "ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES256-GCM-SHA384:" \
"ECDHE-ECDSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-DSS-AES128-GCM-SHA256:kEDH+AESGCM:" \
"ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES128-SHA:" \
"ECDHE-RSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA384:ECDHE-RSA-AES256-SHA:ECDHE-ECDSA-AES256-SHA:" \
"DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-DSS-AES128-SHA256:DHE-RSA-AES256-SHA256:DHE-DSS-AES256-SHA:" \
"DHE-RSA-AES256-SHA:ECDHE-RSA-DES-CBC3-SHA:ECDHE-ECDSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:" \
"AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:AES:DES-CBC3-SHA:" \
"HIGH:!aNULL:!eNULL:!EXPORT:!DES:!RC4:!MD5:!PSK:!aECDH:" \
"!EDH-DSS-DES-CBC3-SHA:!EDH-RSA-DES-CBC3-SHA:!KRB5-DES-CBC3-SHA"
class HostMatcher(object):
def __init__(self, patterns=tuple()):
self.patterns = list(patterns)
self.regexes = [re.compile(p, re.IGNORECASE) for p in self.patterns]
def __call__(self, address):
if not address:
return False
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 __bool__(self):
return bool(self.patterns)
if six.PY2:
__nonzero__ = __bool__
ServerSpec = collections.namedtuple("ServerSpec", "scheme address")
class ProxyConfig:
def __init__(
self,
options,
no_upstream_cert=False,
mode="regular",
upstream_server=None,
upstream_auth=None,
authenticator=None,
ignore_hosts=tuple(),
tcp_hosts=tuple(),
http2=True,
rawtcp=False,
ciphers_client=DEFAULT_CLIENT_CIPHERS,
ciphers_server=None,
certs=tuple(),
ssl_version_client="secure",
ssl_version_server="secure",
ssl_verify_upstream_cert=False,
ssl_verify_upstream_trusted_cadir=None,
ssl_verify_upstream_trusted_ca=None,
add_upstream_certs_to_client_chain=False,
):
self.options = options
self.ciphers_client = ciphers_client
self.ciphers_server = ciphers_server
self.no_upstream_cert = no_upstream_cert
self.mode = mode
if upstream_server:
self.upstream_server = ServerSpec(upstream_server[0], tcp.Address.wrap(upstream_server[1]))
self.upstream_auth = upstream_auth
else:
self.upstream_server = None
self.upstream_auth = None
self.check_ignore = HostMatcher(ignore_hosts)
self.check_tcp = HostMatcher(tcp_hosts)
self.http2 = http2
self.rawtcp = rawtcp
self.authenticator = authenticator
self.openssl_method_client, self.openssl_options_client = \
tcp.sslversion_choices[ssl_version_client]
self.openssl_method_server, self.openssl_options_server = \
tcp.sslversion_choices[ssl_version_server]
if ssl_verify_upstream_cert:
self.openssl_verification_mode_server = SSL.VERIFY_PEER
else:
self.openssl_verification_mode_server = SSL.VERIFY_NONE
self.openssl_trusted_cadir_server = ssl_verify_upstream_trusted_cadir
self.openssl_trusted_ca_server = ssl_verify_upstream_trusted_ca
self.add_upstream_certs_to_client_chain = add_upstream_certs_to_client_chain
self.certstore = None
self.clientcerts = None
self.configure(options)
options.changed.connect(self.configure)
def configure(self, options):
certstore_path = os.path.expanduser(options.cadir)
if not os.path.exists(certstore_path):
raise exceptions.OptionsError(
"Certificate Authority directory does not exist: %s" %
options.cadir
)
self.certstore = certutils.CertStore.from_store(
os.path.expanduser(options.cadir),
CONF_BASENAME
)
if options.clientcerts:
clientcerts = os.path.expanduser(options.clientcerts)
if not os.path.exists(clientcerts):
raise exceptions.OptionsError(
"Client certificate path does not exist: %s" %
options.clientcerts
)
self.clientcerts = clientcerts
for spec, cert in options.certs:
cert = os.path.expanduser(cert)
if not os.path.exists(cert):
raise exceptions.OptionsError(
"Certificate file does not exist: %s" % cert
)
try:
self.certstore.add_cert_file(spec, cert)
except crypto.Error:
raise exceptions.OptionsError(
"Invalid certificate format: %s" % cert
)
def process_proxy_options(parser, options, args):
c = 0
mode, upstream_server, upstream_auth = "regular", None, None
if args.transparent_proxy:
c += 1
if not platform.resolver:
return parser.error("Transparent mode not supported on this platform.")
mode = "transparent"
if args.socks_proxy:
c += 1
mode = "socks5"
if args.reverse_proxy:
c += 1
mode = "reverse"
upstream_server = args.reverse_proxy
if args.upstream_proxy:
c += 1
mode = "upstream"
upstream_server = args.upstream_proxy
upstream_auth = args.upstream_auth
if c > 1:
return parser.error(
"Transparent, SOCKS5, reverse and upstream proxy mode "
"are mutually exclusive. Read the docs on proxy modes to understand why."
)
if args.add_upstream_certs_to_client_chain and args.no_upstream_cert:
return parser.error(
"The no-upstream-cert and add-upstream-certs-to-client-chain "
"options are mutually exclusive. If no-upstream-cert is enabled "
"then the upstream certificate is not retrieved before generating "
"the client certificate chain."
)
if args.add_upstream_certs_to_client_chain and args.ssl_verify_upstream_cert:
return parser.error(
"The verify-upstream-cert and add-upstream-certs-to-client-chain "
"options are mutually exclusive. If upstream certificates are verified "
"then extra upstream certificates are not available for inclusion "
"to the client chain."
)
if args.auth_nonanonymous or args.auth_singleuser or args.auth_htpasswd:
if args.transparent_proxy:
return parser.error("Proxy Authentication not supported in transparent mode.")
if args.socks_proxy:
return parser.error(
"Proxy Authentication not supported in SOCKS mode. "
"https://github.com/mitmproxy/mitmproxy/issues/738"
)
if args.auth_singleuser:
if len(args.auth_singleuser.split(':')) != 2:
return parser.error(
"Invalid single-user specification. Please use the format username:password"
)
username, password = args.auth_singleuser.split(':')
password_manager = authentication.PassManSingleUser(username, password)
elif args.auth_nonanonymous:
password_manager = authentication.PassManNonAnon()
elif args.auth_htpasswd:
try:
password_manager = authentication.PassManHtpasswd(
args.auth_htpasswd)
except ValueError as v:
return parser.error(v)
authenticator = authentication.BasicProxyAuth(password_manager, "mitmproxy")
else:
authenticator = authentication.NullProxyAuth(None)
return ProxyConfig(
options,
no_upstream_cert=args.no_upstream_cert,
mode=mode,
upstream_server=upstream_server,
upstream_auth=upstream_auth,
ignore_hosts=args.ignore_hosts,
tcp_hosts=args.tcp_hosts,
http2=args.http2,
rawtcp=args.rawtcp,
authenticator=authenticator,
ciphers_client=args.ciphers_client,
ciphers_server=args.ciphers_server,
ssl_version_client=args.ssl_version_client,
ssl_version_server=args.ssl_version_server,
ssl_verify_upstream_cert=args.ssl_verify_upstream_cert,
ssl_verify_upstream_trusted_cadir=args.ssl_verify_upstream_trusted_cadir,
ssl_verify_upstream_trusted_ca=args.ssl_verify_upstream_trusted_ca,
add_upstream_certs_to_client_chain=args.add_upstream_certs_to_client_chain,
)
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