1275680Strasz/*- 2275680Strasz * Copyright (c) 2004 Pawel Jakub Dawidek <pjd@FreeBSD.org> 3275680Strasz * Copyright (c) 2014 The FreeBSD Foundation 4275680Strasz * All rights reserved. 5275680Strasz * 6275680Strasz * This software was developed by Edward Tomasz Napierala under sponsorship 7275680Strasz * from the FreeBSD Foundation. 8275680Strasz * 9275680Strasz * Redistribution and use in source and binary forms, with or without 10275680Strasz * modification, are permitted provided that the following conditions 11275680Strasz * are met: 12275680Strasz * 1. Redistributions of source code must retain the above copyright 13275680Strasz * notice, this list of conditions and the following disclaimer. 14275680Strasz * 2. Redistributions in binary form must reproduce the above copyright 15275680Strasz * notice, this list of conditions and the following disclaimer in the 16275680Strasz * documentation and/or other materials provided with the distribution. 17275680Strasz * 18275680Strasz * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND 19275680Strasz * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20275680Strasz * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21275680Strasz * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE 22275680Strasz * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23275680Strasz * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24275680Strasz * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25275680Strasz * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26275680Strasz * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27275680Strasz * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28275680Strasz * SUCH DAMAGE. 29275680Strasz */ 30275680Strasz 31275680Strasz#include <sys/cdefs.h> 32275680Strasz__FBSDID("$FreeBSD: releng/10.2/usr.sbin/fstyp/cd9660.c 277435 2015-01-20 20:41:32Z trasz $"); 33275680Strasz 34275680Strasz#include <stdio.h> 35275680Strasz#include <stdlib.h> 36275680Strasz#include <string.h> 37275680Strasz 38275680Strasz#include "fstyp.h" 39275680Strasz 40275680Strasz#define ISO9660_MAGIC "\x01" "CD001" "\x01\x00" 41275680Strasz#define ISO9660_OFFSET 0x8000 42275680Strasz#define VOLUME_LEN 32 43275680Strasz 44275680Straszint 45275680Straszfstyp_cd9660(FILE *fp, char *label, size_t size) 46275680Strasz{ 47275680Strasz char *sector, *volume; 48275680Strasz int i; 49275680Strasz 50275680Strasz sector = read_buf(fp, ISO9660_OFFSET, 512); 51275680Strasz if (sector == NULL) 52275680Strasz return (1); 53275680Strasz if (bcmp(sector, ISO9660_MAGIC, sizeof(ISO9660_MAGIC) - 1) != 0) { 54275680Strasz free(sector); 55275680Strasz return (1); 56275680Strasz } 57275680Strasz volume = sector + 0x28; 58275680Strasz bzero(label, size); 59275680Strasz strlcpy(label, volume, MIN(size, VOLUME_LEN)); 60275680Strasz free(sector); 61275680Strasz for (i = size - 1; i > 0; i--) { 62275680Strasz if (label[i] == '\0') 63275680Strasz continue; 64275680Strasz else if (label[i] == ' ') 65275680Strasz label[i] = '\0'; 66275680Strasz else 67275680Strasz break; 68275680Strasz } 69275680Strasz return (0); 70275680Strasz} 71