Windows socks proxy support

pull/16/merge
inpos 2017-12-11 21:56:54 +03:00
parent 0a217b31cc
commit 5ff31409dc
2 changed files with 85 additions and 1 deletions

View File

@ -67,7 +67,7 @@ from base64 import b64encode
if os.name == "nt" and sys.version_info < (3, 0):
try:
import win_inet_pton
from resources import win_inet_pton
except ImportError:
raise ImportError("To run PySocks on Windows you must install win_inet_pton")

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@ -0,0 +1,84 @@
# This software released into the public domain. Anyone is free to copy,
# modify, publish, use, compile, sell, or distribute this software,
# either in source code form or as a compiled binary, for any purpose,
# commercial or non-commercial, and by any means.
import socket
import ctypes
import os
class sockaddr(ctypes.Structure):
_fields_ = [("sa_family", ctypes.c_short),
("__pad1", ctypes.c_ushort),
("ipv4_addr", ctypes.c_byte * 4),
("ipv6_addr", ctypes.c_byte * 16),
("__pad2", ctypes.c_ulong)]
if hasattr(ctypes, 'windll'):
WSAStringToAddressA = ctypes.windll.ws2_32.WSAStringToAddressA
WSAAddressToStringA = ctypes.windll.ws2_32.WSAAddressToStringA
else:
def not_windows():
raise SystemError(
"Invalid platform. ctypes.windll must be available."
)
WSAStringToAddressA = not_windows
WSAAddressToStringA = not_windows
def inet_pton(address_family, ip_string):
addr = sockaddr()
addr.sa_family = address_family
addr_size = ctypes.c_int(ctypes.sizeof(addr))
if WSAStringToAddressA(
ip_string,
address_family,
None,
ctypes.byref(addr),
ctypes.byref(addr_size)
) != 0:
raise socket.error(ctypes.FormatError())
if address_family == socket.AF_INET:
return ctypes.string_at(addr.ipv4_addr, 4)
if address_family == socket.AF_INET6:
return ctypes.string_at(addr.ipv6_addr, 16)
raise socket.error('unknown address family')
def inet_ntop(address_family, packed_ip):
addr = sockaddr()
addr.sa_family = address_family
addr_size = ctypes.c_int(ctypes.sizeof(addr))
ip_string = ctypes.create_string_buffer(128)
ip_string_size = ctypes.c_int(ctypes.sizeof(ip_string))
if address_family == socket.AF_INET:
if len(packed_ip) != ctypes.sizeof(addr.ipv4_addr):
raise socket.error('packed IP wrong length for inet_ntoa')
ctypes.memmove(addr.ipv4_addr, packed_ip, 4)
elif address_family == socket.AF_INET6:
if len(packed_ip) != ctypes.sizeof(addr.ipv6_addr):
raise socket.error('packed IP wrong length for inet_ntoa')
ctypes.memmove(addr.ipv6_addr, packed_ip, 16)
else:
raise socket.error('unknown address family')
if WSAAddressToStringA(
ctypes.byref(addr),
addr_size,
None,
ip_string,
ctypes.byref(ip_string_size)
) != 0:
raise socket.error(ctypes.FormatError())
return ip_string[:ip_string_size.value - 1]
# Adding our two functions to the socket library
if os.name == 'nt':
socket.inet_pton = inet_pton
socket.inet_ntop = inet_ntop