Смотри http://www.xakep.ru/local/search/result.asp?scope=+%22%2Fxpost%22%2C+%22%2Fmagazines%2Fxa%22+&orderby=rank&tosearch=socks
А это я когда-то на delphi переписал (http://www.xakep.ru/post/18884/default.asp). Кажется работает Ж)
| Код |
program dproxy;
uses
windows,
WinSock;
type TSOCKS4_REQUEST=record
ucVersion : byte;
ucCommand : byte;
wDestPort : word;
dwDestIp : dword;
end;
var
wsaData : TWSADATA;
sport : string;
iport : word;
l_sock : TSocket;
sock4 : SOCKADDR_IN;
Client : TSockAddr;
Size : integer;
h1 : THandle;
procedure FlushRecvBufferUntil(s:TSOCKET;condition:Char);
var
iReceiveRes : integer;
cDummy : char;
begin
repeat
iReceiveRes := recv(s, cDummy, sizeof(cDummy), 0);
until NOT ((iReceiveRes<>SOCKET_ERROR) and (iReceiveRes<>0) and (cDummy<>condition));
end;
procedure SocksHandlerTreadProc(pParam:pointer); stdcall;
var
s : TSocket;
tunnelSock : TSocket;
iConnectResult : integer;
iReceiveRes : integer;
iSocketsSet : integer;
socks4Request : TSOCKS4_REQUEST;
socks4Response : TSOCKS4_REQUEST;
remoteAddr : SOCKADDR_IN;
fds_read : TFDset;//fd_set;
tv : TTimeval;
cSocksVersion : byte;
iSelectResult : integer;
loop : integer;
ulVal : u_long;
swapBuffer : array[0..4096*16-1] of char;
iRecvResult : integer;
begin
s := TSOCKET(pParam);
tunnelSock := 0;
loop := 0;
while loop=0 do
begin
inc(loop);
iConnectResult := 0;
iReceiveRes := 0;
iSocketsSet := 0;
FD_ZERO(fds_read);
FD_SET(s, fds_read);
tv.tv_sec := 30;
cSocksVersion := 0;
iSelectResult := select(0, @fds_read, nil, nil, @tv);
if (iSelectResult=SOCKET_ERROR) or (not iSelectResult>0) then break;
ulVal := 0;
ioctlsocket(s, FIONBIO , ulVal);
iReceiveRes := recv(s, cSocksVersion, 1, MSG_PEEK);
if cSocksVersion=4 then // 3333333333333333333
begin
iReceiveRes := recv(s, socks4Request, sizeof(socks4Request), 0);
if iReceiveRes=SOCKET_ERROR then break;
ulVal := 1;
ioctlsocket(s, FIONBIO , ulVal);
FlushRecvBufferUntil(s, #0);
if socks4Request.ucCommand = 1 then
begin // 2222222222222222222
ulVal := 0;
ioctlsocket(s, FIONBIO, ulVal);
remoteAddr.sin_family := AF_INET;
move(socks4Request.dwDestIp,remoteAddr.sin_addr,sizeof(remoteAddr.sin_addr));
remoteAddr.sin_port := socks4Request.wDestPort;
tunnelSock := socket(AF_INET, SOCK_STREAM, 0);
iConnectResult := connect(tunnelSock, remoteAddr, sizeof(remoteAddr));
if (iConnectResult<>SOCKET_ERROR) then
begin // 1111111111
socks4Response.ucCommand := 90;
socks4Response.ucVersion := 0;
send(s, socks4Response, sizeof(socks4Response), 0);
end else break; // 1111111111
end else break;// 2222222222222222222
end else break;// 3333333333333333333
ulVal := 0;
ioctlsocket(tunnelSock, FIONBIO, ulVal);
ioctlsocket(s, FIONBIO, ulVal);
fillchar(swapBuffer,sizeof(swapBuffer),0);
tv.tv_sec := 2;
while true do // 4444444444444444
begin
FD_ZERO(fds_read);
FD_SET(s, fds_read);
FD_SET(tunnelSock, fds_read);
iSocketsSet := select(0, @fds_read, nil, nil, @tv); //if (iSocketsSet == SOCKET_ERROR) _leave;
if iSocketsSet > 0 then // 5555555555555555
begin
if FD_ISSET(s, fds_read) then
begin
iRecvResult := recv(s, swapBuffer, sizeof(swapBuffer), MSG_PEEK);
if (iRecvResult=0)
then break
else iRecvResult := recv(s, swapBuffer, sizeof(swapBuffer), 0);
if (iRecvResult <> SOCKET_ERROR) and (iRecvResult > 0)
then send(tunnelSock, swapBuffer, iRecvResult, 0)
else BREAK;
end;
if (FD_ISSET(tunnelSock, fds_read)) then
begin
iRecvResult := recv(tunnelSock, swapBuffer, sizeof(swapBuffer), MSG_PEEK);
if iRecvResult = 0
then break
else iRecvResult := recv(tunnelSock, swapBuffer, sizeof(swapBuffer), 0);
if (iRecvResult <> SOCKET_ERROR) and (iRecvResult > 0)
then send(s, swapBuffer, iRecvResult, 0)
else break;
end;
end; // 5555555555555555
end; // 4444444444444444
end; // while loop=0 do
closesocket(s);
closesocket(tunnelSock);
end;
begin
WSAStartup(MAKEWORD(2,0), wsaData);
l_sock := socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
sock4.sin_family := AF_INET;
sock4.sin_port := htons(1080);
sock4.sin_addr.s_addr := INADDR_ANY;
Size := SizeOf(Client);
if (Bind(l_sock,sock4,SizeOf(sock4))=0) and (Listen(l_sock,$FF)=0) then
while true do CreateThread(nil,0,@SocksHandlerTreadProc,Pointer(accept(l_sock, @Client, @Size)),0,h1);
end.
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