/*
 * lar - LinuxBIOS archiver
 *
 * Copyright (C) 2006 coresystems GmbH
 * Written by Stefan Reinauer <stepan@coresystems.de> for coresystems GmbH.
 *
 * 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; version 2 of the License.
 *
 * 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; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA, 02110-1301 USA
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/mman.h>
#include <netinet/in.h>

#include "lib.h"
#include "lar.h"

int list_lar(int argc, char *argv[])
{
	int archivefile;
	char *archivename;
	char *inmap;
	char *walk;
	char *fullname;
	struct lar_header *header;
	struct stat statbuf;
	int archivelen;
	int do_extract;
	int i;

	archivename = argv[2];

	if (stat(archivename, &statbuf) != 0) {
		printf("Error opening %s: %s\n", archivename, strerror(errno));
		exit(1);
	}
	printf("Opening %s\n", archivename);

	archivefile = open(archivename, O_RDONLY);
	if (archivefile == -1) {
		printf("Error while opening %s: %s\n",
		       archivename, strerror(errno));
		exit(1);
	}
	archivelen = statbuf.st_size;

	inmap = mmap(NULL, statbuf.st_size, PROT_READ,
		     MAP_SHARED, archivefile, 0);

	for (walk = inmap; walk < inmap + statbuf.st_size; walk += 16) {
		if (strcmp(walk, MAGIC) != 0)
			continue;

		header = (struct lar_header *)walk;
		fullname = walk + sizeof(struct lar_header);

		do_extract = 1;
		if (argc > 3) {
			do_extract = 0;
			for (i = 3; i < argc; i++) {
				if (strcmp(fullname, argv[i]) == 0) {
					do_extract = 1;
					break;
				}
			}
		}

		/* Don't extract this one, skip it. */
		if (!do_extract)
			continue;

		printf("  %s ", walk + sizeof(struct lar_header));

		printf("(%d bytes @0x%x)\n", ntohl(header->len),
		       (walk - inmap) + ntohl(header->offset));
	}

	munmap(inmap, statbuf.st_size);
	close(archivefile);
	printf("done.\n");

	return 0;
}