VAC packet dumper

/*
** Quick VAC replayer. This will give a key and a command to a function, and VAC
** will reply with a result.
*/

#include <stdio.h>
#include <Windows.h>

int main( int argc, char** argv ) {


		UINT8    key[8] = { 0xea, 0xbe, 0xdf, 0x61, 0x62, 0xb2, 0x77, 0x11 };
		UINT8 outKey[8] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
		UINT8 outBuf[6000];
		UINT32 outSize;

		HMODULE hVac = LoadLibraryA("SourceInit.dat");

		if (!hVac) {
				printf("Cannot replay - VAC module is missing.\n");
				return 1;
		}

		void (*TestFcn)( UINT8* something, UINT8* key, UINT32 mysteryarg, UINT8* response, UINT32* responseSize );

		UINT8* fcnPtr = (UINT8*)hVac + 0x3535;
		TestFcn = (void(*)(UINT8*,UINT8*,UINT32,UINT8*,UINT32*))fcnPtr;

		printf("test function pointer %p\n", TestFcn);

		// I don't actually know the correct parameters for this.
		// Just making this up as I go along.
		// In this test scenario the function always seems to return a 256-byte packet.
		TestFcn(key, outKey, 4, outBuf, &outSize);


		printf("Function finished with a buffer size of %p\n", outSize);

		FILE*f = fopen("VacSamplePacket.bin","wb");
		if (f) {
				fwrite( outBuf, outSize, 1, f );
				fclose( f );
		}

		return 0;
}