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
|
import socket
from ._types import ProxyType
from ._errors import ProxyConnectionError, ProxyTimeoutError
from ._helpers import parse_proxy_url
from ._stream_sync import SyncSocketStream
from ._proto_socks5_sync import Socks5Proto
from ._proto_http_sync import HttpProto
from ._proto_socks4_sync import Socks4Proto
DEFAULT_TIMEOUT = 60
class SyncProxy:
def connect(self, dest_host, dest_port, timeout=None, _socket=None):
raise NotImplementedError() # pragma: no cover
@property
def proxy_host(self):
raise NotImplementedError() # pragma: no cover
@property
def proxy_port(self):
raise NotImplementedError() # pragma: no cover
class Proxy:
@classmethod
def create(cls, proxy_type: ProxyType, host: str, port: int,
username: str = None, password: str = None,
rdns: bool = None) -> SyncProxy:
if proxy_type == ProxyType.SOCKS4:
return Socks4Proxy(
proxy_host=host,
proxy_port=port,
user_id=username,
rdns=rdns
)
if proxy_type == ProxyType.SOCKS5:
return Socks5Proxy(
proxy_host=host,
proxy_port=port,
username=username,
password=password,
rdns=rdns
)
if proxy_type == ProxyType.HTTP:
return HttpProxy(
proxy_host=host,
proxy_port=port,
username=username,
password=password
)
raise ValueError('Invalid proxy type: ' # pragma: no cover
'{}'.format(proxy_type))
@classmethod
def from_url(cls, url: str, **kwargs) -> SyncProxy:
proxy_type, host, port, username, password = parse_proxy_url(url)
return cls.create(
proxy_type=proxy_type,
host=host,
port=port,
username=username,
password=password,
**kwargs
)
class SyncProxyConnection(SyncProxy):
def __init__(self, proxy_host, proxy_port):
self._proxy_host = proxy_host
self._proxy_port = proxy_port
self._dest_host = None
self._dest_port = None
self._timeout = None
self._stream = SyncSocketStream()
def connect(self, dest_host, dest_port, timeout=None, _socket=None):
if timeout is None:
timeout = DEFAULT_TIMEOUT
self._dest_host = dest_host
self._dest_port = dest_port
self._timeout = timeout
try:
self._stream.open_connection(
host=self._proxy_host,
port=self._proxy_port,
timeout=timeout,
_socket=_socket
)
self.negotiate()
except socket.timeout as e:
self._stream.close()
raise ProxyTimeoutError('Proxy connection timed out: %s'
% self._timeout) from e
except OSError as e:
self._stream.close()
msg = ('Can not connect to proxy %s:%s [%s]' %
(self._proxy_host, self._proxy_port, e.strerror))
raise ProxyConnectionError(e.errno, msg) from e
except Exception:
self._stream.close()
raise
return self._stream.socket
def negotiate(self):
raise NotImplementedError
@property
def proxy_host(self):
return self._proxy_host
@property
def proxy_port(self):
return self._proxy_port
class Socks5Proxy(SyncProxyConnection):
def __init__(self, proxy_host, proxy_port,
username=None, password=None, rdns=None):
super().__init__(
proxy_host=proxy_host,
proxy_port=proxy_port
)
self._username = username
self._password = password
self._rdns = rdns
def negotiate(self):
proto = Socks5Proto(
stream=self._stream,
dest_host=self._dest_host,
dest_port=self._dest_port,
username=self._username,
password=self._password,
rdns=self._rdns
)
proto.negotiate()
class Socks4Proxy(SyncProxyConnection):
def __init__(self, proxy_host, proxy_port,
user_id=None, rdns=None):
super().__init__(
proxy_host=proxy_host,
proxy_port=proxy_port
)
self._user_id = user_id
self._rdns = rdns
def negotiate(self):
proto = Socks4Proto(
stream=self._stream,
dest_host=self._dest_host,
dest_port=self._dest_port,
user_id=self._user_id,
rdns=self._rdns
)
proto.negotiate()
class HttpProxy(SyncProxyConnection):
def __init__(self, proxy_host, proxy_port, username=None, password=None):
super().__init__(
proxy_host=proxy_host,
proxy_port=proxy_port
)
self._username = username
self._password = password
def negotiate(self):
proto = HttpProto(
stream=self._stream,
dest_host=self._dest_host,
dest_port=self._dest_port,
username=self._username,
password=self._password
)
proto.negotiate()
|
