samp-re/uncompress.c

/* vim: set filetype=c ts=8 noexpandtab: */

//#define COMPRESS_PRINT

#include "common.h"
#include "uncompress.h"
#include <stdlib.h>
#include <stdio.h>
#include <string.h>

static unsigned char *currentPort = (unsigned char*) 0x4F4E78;

static 
__declspec(naked) int sub_46A6F0(
	int a, unsigned char portStuff, char *dest, int length)
{
	_asm {
		mov eax, 0x46A6F0
		jmp eax
	}
}

static 
__declspec(naked) int sub_46A6C0(char *dest, int length)
{
	_asm {
		mov eax, 0x46A6C0
		jmp eax
	}
}

int uncompress_main(char *dest, char *source, int *length)
{
	unsigned char res;

#ifdef COMPRESS_PRINT
	int i;

	printf("IN  ");
	for (i = 0; i < *length; i++) {
		printf("%02X ", (unsigned char) source[i]);
	}
	printf("\n");
#endif


	(*length)--;
	memcpy(dest, source + 1, *length);

	sub_46A6F0(0, *currentPort, dest, *length);
	res = sub_46A6C0(dest, *length);

#ifdef COMPRESS_PRINT
	printf("OUT ");
	for (i = 0; i < *length; i++) {
		printf("%02X ", (unsigned char) dest[i]);
	}
	printf("\n");
#endif

/*
	res -= source[0];
	res = -res;
	// sbb eax, eax
	// inc eax*/
	/*always accept for now I suppose...*/
	return 1;
}