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mbdextract.c
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mbdextract.c
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/*
* mbdextract.c: extract game scripts from MBD files.
*
* Copyright (c) 2014-2015 Yishen Miao
*
* This file is part of MBDextract
*
* MBDextract is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* MBDextract is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with MBDextract. If not, see <http://www.gnu.org/licenses/>.
*
*/
#include "config.h"
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dicts.h"
const char *ver_str = PACKAGE_STRING;
const char *bugreport = PACKAGE_BUGREPORT;
void printUsage(char pname[])
{
printf("Version: %s\nUsage: %s file\n\nplease send bug reports to "
"<%s>.\n",
ver_str, pname, bugreport);
}
int main(int argc, char *argv[])
{
FILE *ifp;
const char *mode = "rb";
char *fbuff, *mbdp, *p, *tmp[8];
unsigned long ifp_len;
int i;
unsigned long offset;
const char magicnum[] = {0x4d, 0x42, 0x44, 0x00};
if (argc < 2) {
printUsage(argv[0]);
return 0;
}
ifp = fopen(argv[1], mode);
if (!ifp) {
fprintf(stderr, "Unable to open %s: %s\n", argv[1],
strerror(errno));
return errno;
}
fseek(ifp, 0 * sizeof(char), SEEK_END);
ifp_len = ftell(ifp);
rewind(ifp);
fbuff = (char *)malloc(ifp_len + 1 * sizeof(char));
if (!fbuff) {
fprintf(stderr, "Unable to allocate memory: %s\n",
strerror(errno));
fclose(ifp);
return errno;
}
fread(fbuff, ifp_len, 1 * sizeof(char), ifp);
fclose(ifp);
mbdp = (char *)memmem(fbuff, ifp_len, magicnum, 4 * sizeof(char));
if (!mbdp) {
fprintf(stderr, "Cannot find MBD header.\n");
return 1;
}
offset = (int)(mbdp - fbuff);
for (i = offset * sizeof(char); i < ifp_len; i += 4 * sizeof(char)) {
memcpy(tmp, &fbuff[i], 8 * sizeof(char));
p = (char *)memmem(lhash, 256 * 8 * sizeof(char), tmp,
8 * sizeof(char));
if (p) {
i += 8 * sizeof(char);
printf("%s",
ldict[(int)(p - lhash) / 8 * sizeof(char)]);
}
memcpy(tmp, &fbuff[i], 4 * sizeof(char));
p = (char *)memmem(shash, 115 * 4 * sizeof(char), tmp,
4 * sizeof(char));
if (p) {
printf("%s",
sdict[(int)(p - shash) / 4 * sizeof(char)]);
}
}
printf("\n");
free(fbuff);
return 0;
}