[Assembler] SFT Loader 2009 Hook v0.7

#include <stdio.h>
#include <Winsock2.h>
#include <windows.h>

#pragma comment(lib,"detours.lib")
#include <detours.h>

#define log_filename "log_file.txt"


static int (WINAPI *orig_connect)(SOCKET s, const struct sockaddr *name, int namelen) = connect;
int WINAPI my_connect(SOCKET s, const struct sockaddr *name, int namelen);
//logger funktion
void log_to_file(const char * format, ...);


BOOL WINAPI DllMain(HINSTANCE hinst, DWORD dwReason, LPVOID reserved)
{
 if (dwReason == DLL_PROCESS_ATTACH) {
 DisableThreadLibraryCalls(hinst);

 DetourTransactionBegin();
 DetourUpdateThread(GetCurrentThread());
 DetourAttach(&(PVOID&)orig_connect, my_connect);
 DetourTransactionCommit();
 log_to_file("API hooked\n");
 }
 return TRUE;
}

int WINAPI my_connect(SOCKET s, const struct sockaddr *name, int namelen)
{
 sockaddr_in *inName = (sockaddr_in *)(name);
 log_to_file("%s\n",inet_ntoa(inName->sin_addr))
 return orig_connect(s,name,namelen);
}

void log_to_file(const char * format, ...)
{
 if(!format) { return; }

 FILE * pFile;
 va_list va_alist;
 char logbuf[256] = {0};

 va_start (va_alist, format);
 _vsnprintf (logbuf+strlen(logbuf), sizeof(logbuf) - strlen(logbuf), format, va_alist);
 va_end (va_alist);

 if (fopen_s(&pFile,log_filename,"a") == NULL) {
 fputs(logbuf,pFile);
 fclose (pFile);
 }
}