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/*
* Copyright 2009 Luc Verhaegen <libv@skynet.be>
*
* This program 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, or (at your option)
* any later version.
*
* This program 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 this program; see the file COPYING. If not, write to
* the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
*/
/*
* This code is heavily based on Veit Kannegiesers <veit@kannegieser.net>
* e_bcpvpd.pas program. This software comes with no license, but is freely
* downloadable at http://kannegieser.net/veit/quelle/phoedeco_src.arj
*/
/*
* It should be very straightfoward to add support for the $COMPIBM compressed
* bios images as well. According to Veits code, the id-string is "$COMPIBM",
* and the data starts straight after the (not null-terminated) id-string.
*/
#define _GNU_SOURCE 1
#include <stdio.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <string.h>
#include <sys/mman.h>
#include "lzss_extract.h"
int
main(int argc, char *argv[])
{
int infd, outfd;
unsigned char *InputBuffer;
int InputBufferSize;
if (argc != 3) {
printf("usage: %s <input file> <output file>\n", argv[0]);
return 1;
}
infd = open(argv[1], O_RDONLY);
if (infd < 0) {
fprintf(stderr, "Error: Failed to open %s: %s\n",
argv[1], strerror(errno));
return 1;
}
InputBufferSize = lseek(infd, 0, SEEK_END);
if (InputBufferSize < 0) {
fprintf(stderr, "Error: Failed to lseek \"%s\": %s\n",
argv[1], strerror(errno));
return 1;
}
InputBuffer = mmap(NULL, InputBufferSize, PROT_READ, MAP_PRIVATE, infd, 0);
if (InputBuffer < 0) {
fprintf(stderr, "Error: Failed to mmap %s: %s\n",
argv[1], strerror(errno));
return 1;
}
if (InputBufferSize < 0x52) {
fprintf(stderr, "Error: \"%s\" is too small tp be a BCPVPD file.\n",
argv[1]);
return 1;
}
if (strncmp((char *) InputBuffer, "BCPVPD", 7)) {
fprintf(stderr, "Error: unable to find BCPVPD header in \"%s\".\n",
argv[1]);
return 1;
}
outfd = open(argv[2], O_RDWR | O_TRUNC | O_CREAT, S_IRWXU);
if (outfd == -1) {
fprintf(stderr, "Error: Failed to open \"%s\": %s\n",
argv[2], strerror(errno));
return 1;
}
return LZSSExtract(InputBuffer + 0x52, InputBufferSize - 0x52, outfd);
}
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