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path: root/reverse-engineering/dosbox_snif/main_validate_code.c
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#include "dos_lemm.h"
#include "rsp.h"
#include "rsp_lemm.h"
#include "utils.h"

#include <string.h> /* memset() */
#include <stdio.h> /* printf() */

inline int imin(int a, int b) {
	if ( a < b ) return a;
	return b;
}

int main(int argc, char *argv[]) {
	int rv, i, end=0, byte;
	struct rsp_state rsp;
	char ds_si[10], command[16], hex_byte[3];
	unsigned int addr, bs, size, offset;

	struct game_data g;
	struct _lemm_data *lemm;

	hex_byte[2]='\0';

	rv=rsp_lemm_init(&rsp, ds_si);
	if ( rv != 0 ) {
		printf("Error rsp_lemm_init() returns %i\n", rv);
		return 1;
	}

	while (!end) {
		rsp_query(&rsp, "c"); // Continue
		if ( rsp.replied != 1 ) printf("Bug 03\n");
		rsp_recv_full(&rsp);
		if ( rsp_check_and_clear(&rsp, "S05") != 0 ) printf("Bug 04\n");

		// From the beginning of the ds segment
		bs = 0x20;
		for (offset=0 ; offset < sizeof(struct game_data) ; offset += size) {
			size = imin(bs,sizeof(struct game_data)-offset);
			addr = (0xb55 << 4) + offset;
			snprintf(command, 15, "m%06x,0x%x", addr, size);
			rsp_query(&rsp, command);
			if ( rsp_decode(&rsp) != bs*2) {
				printf("%06x : Bug\n", addr);
			} else {
				printf("%06x : %s\n", addr, rsp.decoded);
			}

			for (i=0;i<bs;i++) {
				memcpy(hex_byte, rsp.decoded+(i*2), 2);
				if ( sscanf(hex_byte, "%x", &byte) != 1 ) {
					printf("Bug decode\n");
				} else {
					((char *)&g)[offset+i] = byte;
				}
			}
		}
		printf("\n");

		lemm = g.lemmings;
		printf("lemm->draw_hint == %x\n", lemm->draw_hint);
	}

	rsp_quit(&rsp);
	return 0;
}