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
|
from __future__ import absolute_import, print_function, division
import socket
import sys
import traceback
import netlib.exceptions
from mitmproxy import exceptions
from mitmproxy import models
from mitmproxy import controller
from mitmproxy.proxy import modes
from mitmproxy.proxy import root_context
from netlib import tcp
from netlib.http import http1
class DummyServer:
bound = False
def __init__(self, config):
self.config = config
def set_channel(self, channel):
pass
def serve_forever(self):
pass
def shutdown(self):
pass
class ProxyServer(tcp.TCPServer):
allow_reuse_address = True
bound = True
def __init__(self, config):
"""
Raises ServerException if there's a startup problem.
"""
self.config = config
try:
super(ProxyServer, self).__init__(
(config.options.listen_host, config.options.listen_port)
)
except socket.error as e:
raise exceptions.ServerException(
'Error starting proxy server: ' + repr(e)
)
self.channel = None
def set_channel(self, channel):
self.channel = channel
def handle_client_connection(self, conn, client_address):
h = ConnectionHandler(
conn,
client_address,
self.config,
self.channel
)
h.handle()
class ConnectionHandler(object):
def __init__(self, client_conn, client_address, config, channel):
self.config = config
"""@type: mitmproxy.proxy.config.ProxyConfig"""
self.client_conn = models.ClientConnection(
client_conn,
client_address,
None)
"""@type: mitmproxy.proxy.connection.ClientConnection"""
self.channel = channel
"""@type: mitmproxy.controller.Channel"""
def _create_root_layer(self):
root_ctx = root_context.RootContext(
self.client_conn,
self.config,
self.channel
)
mode = self.config.options.mode
if mode == "upstream":
return modes.HttpUpstreamProxy(
root_ctx,
self.config.upstream_server.address
)
elif mode == "transparent":
return modes.TransparentProxy(root_ctx)
elif mode == "reverse":
server_tls = self.config.upstream_server.scheme == "https"
return modes.ReverseProxy(
root_ctx,
self.config.upstream_server.address,
server_tls
)
elif mode == "socks5":
return modes.Socks5Proxy(root_ctx)
elif mode == "regular":
return modes.HttpProxy(root_ctx)
elif callable(mode): # pragma: no cover
return mode(root_ctx)
else: # pragma: no cover
raise ValueError("Unknown proxy mode: %s" % mode)
def handle(self):
self.log("clientconnect", "info")
root_layer = self._create_root_layer()
try:
root_layer = self.channel.ask("clientconnect", root_layer)
root_layer()
except exceptions.Kill:
self.log("Connection killed", "info")
except exceptions.ProtocolException as e:
if isinstance(e, exceptions.ClientHandshakeException):
self.log(
"Client Handshake failed. "
"The client may not trust the proxy's certificate for {}.".format(e.server),
"warn"
)
self.log(repr(e), "debug")
elif isinstance(e, exceptions.InvalidServerCertificate):
self.log(str(e), "warn")
self.log("Invalid certificate, closing connection. Pass --insecure to disable validation.", "warn")
else:
self.log(str(e), "warn")
self.log(traceback.format_exc(), "debug")
# If an error propagates to the topmost level,
# we send an HTTP error response, which is both
# understandable by HTTP clients and humans.
try:
error_response = models.make_error_response(502, repr(e))
self.client_conn.send(http1.assemble_response(error_response))
except netlib.exceptions.TcpException:
pass
except Exception:
self.log(traceback.format_exc(), "error")
print(traceback.format_exc(), file=sys.stderr)
print("mitmproxy has crashed!", file=sys.stderr)
print("Please lodge a bug report at: https://github.com/mitmproxy/mitmproxy", file=sys.stderr)
self.log("clientdisconnect", "info")
self.channel.tell("clientdisconnect", root_layer)
self.client_conn.finish()
def log(self, msg, level):
msg = "{}: {}".format(repr(self.client_conn.address), msg)
self.channel.tell("log", controller.LogEntry(msg, level))
|