aboutsummaryrefslogtreecommitdiffstats
path: root/libmproxy/proxy/config.py
blob: a635ab19e3677d6f80ecff02a87fde0dc86afbdd (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
from __future__ import (absolute_import, print_function, division)
import collections
import os
import re
from OpenSSL import SSL

from netlib import certutils, tcp
from netlib.http import authentication
from netlib.tcp import Address, sslversion_choices

from .. import utils, platform

CONF_BASENAME = "mitmproxy"
CA_DIR = "~/.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 __nonzero__(self):
        return bool(self.patterns)


ServerSpec = collections.namedtuple("ServerSpec", "scheme address")


class ProxyConfig:

    def __init__(
            self,
            host='',
            port=8080,
            cadir=CA_DIR,
            clientcerts=None,
            no_upstream_cert=False,
            body_size_limit=None,
            mode="regular",
            upstream_server=None,
            authenticator=None,
            ignore_hosts=tuple(),
            tcp_hosts=tuple(),
            http2=False,
            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,
    ):
        self.host = host
        self.port = port
        self.ciphers_client = ciphers_client
        self.ciphers_server = ciphers_server
        self.clientcerts = clientcerts
        self.no_upstream_cert = no_upstream_cert
        self.body_size_limit = body_size_limit
        self.mode = mode
        if upstream_server:
            self.upstream_server = ServerSpec(upstream_server[0], Address.wrap(upstream_server[1]))
        else:
            self.upstream_server = None

        self.check_ignore = HostMatcher(ignore_hosts)
        self.check_tcp = HostMatcher(tcp_hosts)
        self.http2 = http2
        self.rawtcp = rawtcp
        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.openssl_method_client, self.openssl_options_client = \
            sslversion_choices[ssl_version_client]
        self.openssl_method_server, self.openssl_options_server = \
            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


def process_proxy_options(parser, options):
    body_size_limit = utils.parse_size(options.body_size_limit)

    c = 0
    mode, upstream_server = "regular", 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. Read the docs on proxy modes to understand why."
        )

    if options.clientcerts:
        options.clientcerts = os.path.expanduser(options.clientcerts)
        if not os.path.exists(options.clientcerts):
            return parser.error(
                "Client certificate path does not exist: %s" % options.clientcerts
            )

    if options.auth_nonanonymous or options.auth_singleuser or options.auth_htpasswd:

        if options.transparent_proxy:
            return parser.error("Proxy Authentication not supported in transparent mode.")

        if options.socks_proxy:
            return parser.error(
                "Proxy Authentication not supported in SOCKS mode. "
                "https://github.com/mitmproxy/mitmproxy/issues/738"
            )

        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 = authentication.PassManSingleUser(username, password)
        elif options.auth_nonanonymous:
            password_manager = authentication.PassManNonAnon()
        elif options.auth_htpasswd:
            try:
                password_manager = authentication.PassManHtpasswd(
                    options.auth_htpasswd)
            except ValueError as v:
                return parser.error(v.message)
        authenticator = authentication.BasicProxyAuth(password_manager, "mitmproxy")
    else:
        authenticator = authentication.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)

    if options.http2 and not tcp.HAS_ALPN:
        raise RuntimeError("HTTP2 support requires OpenSSL 1.0.2 or above.")

    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,
        ignore_hosts=options.ignore_hosts,
        tcp_hosts=options.tcp_hosts,
        http2=options.http2,
        rawtcp=options.rawtcp,
        authenticator=authenticator,
        ciphers_client=options.ciphers_client,
        ciphers_server=options.ciphers_server,
        certs=tuple(certs),
        ssl_version_client=options.ssl_version_client,
        ssl_version_server=options.ssl_version_server,
        ssl_verify_upstream_cert=options.ssl_verify_upstream_cert,
        ssl_verify_upstream_trusted_cadir=options.ssl_verify_upstream_trusted_cadir,
        ssl_verify_upstream_trusted_ca=options.ssl_verify_upstream_trusted_ca
    )