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
|
from __future__ import (absolute_import, print_function, division)
import traceback
import sys
import socket
import six
from netlib import tcp
from netlib.exceptions import TcpException
from netlib.http.http1 import assemble_response
from ..exceptions import ProtocolException, ServerException, ClientHandshakeException
from ..protocol import Kill
from ..models import ClientConnection, make_error_response
from .modes import HttpUpstreamProxy, HttpProxy, ReverseProxy, TransparentProxy, Socks5Proxy
from .root_context import RootContext, Log
class DummyServer:
bound = False
def __init__(self, config):
self.config = config
def start_slave(self, *args):
pass
def shutdown(self):
pass
class ProxyServer(tcp.TCPServer):
allow_reuse_address = True
bound = True
def __init__(self, config):
"""
Raises ProxyServerError if there's a startup problem.
"""
self.config = config
try:
super(ProxyServer, self).__init__((config.host, config.port))
except socket.error as e:
six.reraise(
ServerException,
ServerException('Error starting proxy server: ' + repr(e)),
sys.exc_info()[2]
)
self.channel = None
def start_slave(self, klass, channel):
slave = klass(channel, self)
slave.start()
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: libmproxy.proxy.config.ProxyConfig"""
self.client_conn = ClientConnection(
client_conn,
client_address,
None)
"""@type: libmproxy.proxy.connection.ClientConnection"""
self.channel = channel
"""@type: libmproxy.controller.Channel"""
def _create_root_layer(self):
root_context = RootContext(
self.client_conn,
self.config,
self.channel
)
mode = self.config.mode
if mode == "upstream":
return HttpUpstreamProxy(
root_context,
self.config.upstream_server.address
)
elif mode == "transparent":
return TransparentProxy(root_context)
elif mode == "reverse":
server_tls = self.config.upstream_server.scheme == "https"
return ReverseProxy(
root_context,
self.config.upstream_server.address,
server_tls
)
elif mode == "socks5":
return Socks5Proxy(root_context)
elif mode == "regular":
return HttpProxy(root_context)
elif callable(mode): # pragma: no cover
return mode(root_context)
else: # pragma: no cover
raise ValueError("Unknown proxy mode: %s" % mode)
def handle(self):
self.log("clientconnect", "info")
root_layer = self._create_root_layer()
root_layer = self.channel.ask("clientconnect", root_layer)
if root_layer == Kill:
def root_layer():
raise Kill()
try:
root_layer()
except Kill:
self.log("Connection killed", "info")
except ProtocolException as e:
if isinstance(e, ClientHandshakeException):
self.log(
"Client Handshake failed. "
"The client may not trust the proxy's certificate for {}.".format(e.server),
"error"
)
self.log(repr(e), "debug")
else:
self.log(repr(e), "info")
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 = make_error_response(502, repr(e))
self.client_conn.send(assemble_response(error_response))
except 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", Log(msg, level))
|
