105 lines
3.8 KiB
Python
105 lines
3.8 KiB
Python
import socket
|
|
import struct
|
|
|
|
from advanceddispatcher import AdvancedDispatcher
|
|
import asyncore_pollchoose as asyncore
|
|
from proxy import Proxy, ProxyError, GeneralProxyError
|
|
|
|
class Socks4aError(ProxyError): pass
|
|
|
|
|
|
class Socks4a(Proxy):
|
|
def __init__(self, address=None):
|
|
Proxy.__init__(self, address)
|
|
self.ipaddr = None
|
|
self.destport = address[1]
|
|
|
|
def state_init(self):
|
|
self.set_state("auth_done", 0)
|
|
|
|
def state_pre_connect(self):
|
|
if not self.read_buf_sufficient(8):
|
|
return False
|
|
# Get the response
|
|
if self.read_buf[0:1] != chr(0x00).encode():
|
|
# bad data
|
|
self.close()
|
|
raise Socks4aError
|
|
elif self.read_buf[1:2] != chr(0x5A).encode():
|
|
# Connection failed
|
|
self.close()
|
|
if ord(self.read_buf[1:2]) in (91, 92, 93):
|
|
# socks 4 erro
|
|
raise Socks4aError
|
|
#raise Socks5Error((ord(resp[1:2]), _socks5errors[ord(resp[1:2])-90]))
|
|
else:
|
|
raise Socks4aError
|
|
#raise Socks4aError((94, _socks4aerrors[4]))
|
|
# Get the bound address/port
|
|
self.boundport = struct.unpack(">H", self.read_buf[2:4])[0]
|
|
self.boundaddr = self.read_buf[4:]
|
|
self.__proxysockname = (self.boundaddr, self.boundport)
|
|
if self.ipaddr != None:
|
|
self.__proxypeername = (socket.inet_ntoa(self.ipaddr), self.destination[1])
|
|
else:
|
|
self.__proxypeername = (self.destination[0], self.destport)
|
|
self.set_state("socks_handshake_done", 8)
|
|
|
|
def proxy_sock_name(self):
|
|
return socket.inet_ntoa(self.__proxysockname[0])
|
|
|
|
def state_socks_handshake_done(self):
|
|
return False
|
|
|
|
|
|
class Socks4aConnection(Socks4a):
|
|
def __init__(self, address):
|
|
Socks4a.__init__(self, address=address)
|
|
|
|
def state_auth_done(self):
|
|
# Now we can request the actual connection
|
|
rmtrslv = False
|
|
self.append_write_buf(struct.pack('>BBH', 0x04, 0x01, self.destination[1]))
|
|
# If the given destination address is an IP address, we'll
|
|
# use the IPv4 address request even if remote resolving was specified.
|
|
try:
|
|
self.ipaddr = socket.inet_aton(self.destination[0])
|
|
self.append_write_buf(self.ipaddr)
|
|
except socket.error:
|
|
# Well it's not an IP number, so it's probably a DNS name.
|
|
if Proxy._remote_dns:
|
|
# Resolve remotely
|
|
rmtrslv = True
|
|
self.ipaddr = None
|
|
self.append_write_buf(struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01))
|
|
else:
|
|
# Resolve locally
|
|
self.ipaddr = socket.inet_aton(socket.gethostbyname(self.destination[0]))
|
|
self.append_write_buf(self.ipaddr)
|
|
if self._auth:
|
|
self.append_write_buf(self._auth[0])
|
|
self.append_write_buf(chr(0x00).encode())
|
|
if rmtrslv:
|
|
self.append_write_buf(self.destination[0] + chr(0x00).encode())
|
|
self.set_state("pre_connect", 0)
|
|
|
|
|
|
class Socks4aResolver(Socks4a):
|
|
def __init__(self, host):
|
|
self.host = host
|
|
self.port = 8444
|
|
Socks4a.__init__(self, address=(self.host, self.port))
|
|
|
|
def state_auth_done(self):
|
|
# Now we can request the actual connection
|
|
self.append_write_buf(struct.pack('>BBH', 0x04, 0xF0, self.destination[1]))
|
|
self.append_write_buf(struct.pack("BBBB", 0x00, 0x00, 0x00, 0x01))
|
|
if self._auth:
|
|
self.append_write_buf(self._auth[0])
|
|
self.append_write_buf(chr(0x00).encode())
|
|
self.append_write_buf(self.host + chr(0x00).encode())
|
|
self.set_state("pre_connect", 0)
|
|
|
|
def resolved(self):
|
|
print "Resolved %s as %s" % (self.host, self.proxy_sock_name())
|