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Copy pathNetIO.cpp
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305 lines (199 loc) · 5.13 KB
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#ifndef _WINSOCKAPI_
#define _WINSOCKAPI_
#endif
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <winsock2.h>
#pragma comment(lib, "ws2_32.lib")
#include "FaultInject.h"
#include "NetIO.h"
#define NETIO_DEBUG 0
DWORD tcp_connect(
char *host,
WORD port)
{
DWORD SockFD = 0;
DWORD nb_io = 1;
DWORD option = 0;
struct linger lin;
struct sockaddr_in DstSAin;
BOOL disable_nagle;
DstSAin.sin_family = AF_INET;
DstSAin.sin_port = htons(port);
DstSAin.sin_addr.s_addr= inet_addr(host);
if((SockFD = WSASocket(AF_INET,SOCK_STREAM,IPPROTO_TCP,NULL,0,0)) == INVALID_SOCKET)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to allocate socket\n"
,WSAGetLastError());
return(-1);
}
if((WSAConnect(SockFD,(struct sockaddr *)&DstSAin, sizeof(DstSAin),NULL,NULL,NULL,NULL)) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to connect to %s:%d\n"
,WSAGetLastError(),host,port);
closesocket(SockFD);
return(-1);
}
if((ioctlsocket(SockFD,FIONBIO,&nb_io)) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to set IO mode of socket %d\n"
,WSAGetLastError(),SockFD);
closesocket(SockFD);
return(-1);
}
lin.l_onoff = 1;
lin.l_linger = 0;
if((setsockopt(SockFD,SOL_SOCKET,SO_LINGER,(const char *)&lin,sizeof(lin))) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to set socket option SO_LINGER on socket %d\n"
,WSAGetLastError(),SockFD);
closesocket(SockFD);
return(-1);
}
disable_nagle = TRUE;
if((setsockopt(SockFD,IPPROTO_TCP,TCP_NODELAY,(const char *)&disable_nagle,sizeof(disable_nagle))) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to set socket option TCP_NODELAY on socket %d\n"
,WSAGetLastError(),SockFD);
closesocket(SockFD);
return(-1);
}
return(SockFD);
}
DWORD GetData(
DWORD SockFD,
char *buffer,
DWORD read_size
)
{
WSABUF wsrecv_buff;
DWORD bytes_recv = 0;
DWORD t = 0;
DWORD Flags = 0;
DWORD errcode = 0;
BOOL data_start = FALSE;
struct timeval read_timeing;
fd_set readfs;
FD_ZERO(&readfs);
FD_SET(SockFD, &readfs);
wsrecv_buff.len = read_size;
wsrecv_buff.buf = buffer;
read_timeing.tv_sec = 0;
read_timeing.tv_usec = 100;
if((t = select(SockFD, NULL, &readfs, NULL, &read_timeing)) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Select: Unable to determine status of socket %d\n",
WSAGetLastError(),SockFD);
return(READ_ERROR);
}
if (FD_ISSET(SockFD,&readfs))
{
if(errcode = WSARecv(SockFD,&wsrecv_buff,1,&bytes_recv,&Flags,0,0))
{
errcode = GetLastError();
if( errcode == WSAENOTCONN ||
errcode == WSAECONNRESET ||
errcode == WSAETIMEDOUT ||
errcode == WSAECONNABORTED )
return(READ_ERROR);
if(errcode == WSAEWOULDBLOCK)
return READ_NODATA;
}
if(bytes_recv > 0)
{
buffer[bytes_recv-1]='\0';
return 0;
}
else
{
if(errcode)
return READ_ERROR;
else
return READ_TIMEOUT;
}
} else
{
return(READ_ERROR);
}
}
DWORD SendData(
DWORD SockFD,
char *data,
DWORD data_size)
{
WSABUF send_buff;
DWORD bytes_sent;
DWORD rc = 0;
DWORD t = 0;
DWORD errcode = 0;
fd_set writefs;
struct timeval write_timeing;
FD_ZERO(&writefs);
FD_SET(SockFD, &writefs);
write_timeing.tv_sec = 1;
write_timeing.tv_usec = 0;
send_buff.len = data_size;
send_buff.buf = data;
if((t = select(SockFD, NULL, &writefs, NULL, &write_timeing)) == SOCKET_ERROR)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Select: Unable to determine status of socket %d\n"
,WSAGetLastError(),SockFD);
return(WRITE_ERROR);
}
if (FD_ISSET(SockFD,&writefs))
{
if(WSASend(SockFD,&send_buff,1,&bytes_sent,0,0,0))
{
errcode = GetLastError();
if(errcode == WSAENOTCONN || errcode == WSAECONNRESET || errcode == WSAETIMEDOUT || errcode == WSAECONNABORTED || errcode == WSAENOTSOCK)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Unable to determine status of socket %d\n"
,errcode,SockFD);
return(WRITE_ERROR);
}
}
}
return rc;
}
DWORD initialize_deliver( struct audit_profile *audit )
{
if((audit->connected_sock = tcp_connect(audit->host, audit->port)) == -1)
{
if(NETIO_DEBUG)
fprintf(stderr,
"[%08X] Error: Failed to make TCP connection to remote service\n"
,audit->connected_sock);
return(-1);
}
return(0);
}
DWORD release_deliver( struct audit_profile *audit )
{
closesocket(audit->connected_sock);
return(0);
}
DWORD deliver_data(DWORD SockFD, char *data,DWORD data_size)
{
char recv_buffer[1024];
if(SendData(SockFD, data,data_size) == -1)
return(-1);
GetData(SockFD,(char *)&recv_buffer,sizeof(recv_buffer)-1);
return(0);
}