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
209
210
211
212
213
214
215
216
217
218
219
220
221
|
import time
import copy
import os
from mitmproxy import stateobject
from mitmproxy import certs
from netlib import tcp
class ClientConnection(tcp.BaseHandler, stateobject.StateObject):
"""
A client connection
Attributes:
address: Remote address
ssl_established: True if TLS is established, False otherwise
clientcert: The TLS client certificate
timestamp_start: Connection start timestamp
timestamp_ssl_setup: TLS established timestamp
timestamp_end: Connection end timestamp
"""
def __init__(self, client_connection, address, server):
# Eventually, this object is restored from state. We don't have a
# connection then.
if client_connection:
super().__init__(client_connection, address, server)
else:
self.connection = None
self.server = None
self.wfile = None
self.rfile = None
self.address = None
self.clientcert = None
self.ssl_established = None
self.timestamp_start = time.time()
self.timestamp_end = None
self.timestamp_ssl_setup = None
self.protocol = None
def __bool__(self):
return bool(self.connection) and not self.finished
def __repr__(self):
return "<ClientConnection: {ssl}{address}>".format(
ssl="[ssl] " if self.ssl_established else "",
address=repr(self.address)
)
@property
def tls_established(self):
return self.ssl_established
_stateobject_attributes = dict(
address=tcp.Address,
ssl_established=bool,
clientcert=certs.SSLCert,
timestamp_start=float,
timestamp_ssl_setup=float,
timestamp_end=float,
)
def copy(self):
return copy.copy(self)
def send(self, message):
if isinstance(message, list):
message = b''.join(message)
self.wfile.write(message)
self.wfile.flush()
@classmethod
def from_state(cls, state):
f = cls(None, tuple(), None)
f.set_state(state)
return f
@classmethod
def make_dummy(cls, address):
return cls.from_state(dict(
address=dict(address=address, use_ipv6=False),
clientcert=None,
ssl_established=False,
timestamp_start=None,
timestamp_end=None,
timestamp_ssl_setup=None
))
def convert_to_ssl(self, *args, **kwargs):
super().convert_to_ssl(*args, **kwargs)
self.timestamp_ssl_setup = time.time()
def finish(self):
super().finish()
self.timestamp_end = time.time()
class ServerConnection(tcp.TCPClient, stateobject.StateObject):
"""
A server connection
Attributes:
address: Remote address. Can be both a domain or an IP address.
ip_address: Resolved remote IP address.
source_address: Local IP address or client's source IP address.
ssl_established: True if TLS is established, False otherwise
cert: The certificate presented by the remote during the TLS handshake
sni: Server Name Indication sent by the proxy during the TLS handshake
via: The underlying server connection (e.g. the connection to the upstream proxy in upstream proxy mode)
timestamp_start: Connection start timestamp
timestamp_tcp_setup: TCP ACK received timestamp
timestamp_ssl_setup: TLS established timestamp
timestamp_end: Connection end timestamp
"""
def __init__(self, address, source_address=None, spoof_source_address=None):
tcp.TCPClient.__init__(self, address, source_address, spoof_source_address)
self.via = None
self.timestamp_start = None
self.timestamp_end = None
self.timestamp_tcp_setup = None
self.timestamp_ssl_setup = None
self.protocol = None
def __bool__(self):
return bool(self.connection) and not self.finished
def __repr__(self):
if self.ssl_established and self.sni:
ssl = "[ssl: {0}] ".format(self.sni)
elif self.ssl_established:
ssl = "[ssl] "
else:
ssl = ""
return "<ServerConnection: {ssl}{address}>".format(
ssl=ssl,
address=repr(self.address)
)
@property
def tls_established(self):
return self.ssl_established
_stateobject_attributes = dict(
address=tcp.Address,
ip_address=tcp.Address,
source_address=tcp.Address,
ssl_established=bool,
cert=certs.SSLCert,
sni=str,
timestamp_start=float,
timestamp_tcp_setup=float,
timestamp_ssl_setup=float,
timestamp_end=float,
)
@classmethod
def from_state(cls, state):
f = cls(tuple())
f.set_state(state)
return f
@classmethod
def make_dummy(cls, address):
return cls.from_state(dict(
address=dict(address=address, use_ipv6=False),
ip_address=dict(address=address, use_ipv6=False),
cert=None,
sni=None,
source_address=dict(address=('', 0), use_ipv6=False),
ssl_established=False,
timestamp_start=None,
timestamp_tcp_setup=None,
timestamp_ssl_setup=None,
timestamp_end=None,
via=None
))
def copy(self):
return copy.copy(self)
def connect(self):
self.timestamp_start = time.time()
tcp.TCPClient.connect(self)
self.timestamp_tcp_setup = time.time()
def send(self, message):
if isinstance(message, list):
message = b''.join(message)
self.wfile.write(message)
self.wfile.flush()
def establish_ssl(self, clientcerts, sni, **kwargs):
if sni and not isinstance(sni, str):
raise ValueError("sni must be str, not " + type(sni).__name__)
clientcert = None
if clientcerts:
if os.path.isfile(clientcerts):
clientcert = clientcerts
else:
path = os.path.join(
clientcerts,
self.address.host.encode("idna").decode()) + ".pem"
if os.path.exists(path):
clientcert = path
self.convert_to_ssl(cert=clientcert, sni=sni, **kwargs)
self.sni = sni
self.timestamp_ssl_setup = time.time()
def finish(self):
tcp.TCPClient.finish(self)
self.timestamp_end = time.time()
ServerConnection._stateobject_attributes["via"] = ServerConnection
|
