summaryrefslogtreecommitdiffstats
path: root/libblkid/iso9660.c
diff options
context:
space:
mode:
Diffstat (limited to 'libblkid/iso9660.c')
-rw-r--r--libblkid/iso9660.c273
1 files changed, 0 insertions, 273 deletions
diff --git a/libblkid/iso9660.c b/libblkid/iso9660.c
deleted file mode 100644
index 148587b3b..000000000
--- a/libblkid/iso9660.c
+++ /dev/null
@@ -1,273 +0,0 @@
-/*
- * Copyright (C) 1999 by Andries Brouwer
- * Copyright (C) 1999, 2000, 2003 by Theodore Ts'o
- * Copyright (C) 2001 by Andreas Dilger
- * Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
- * Copyright (C) 2008 Karel Zak <kzak@redhat.com>
- *
- * Inspired also by libvolume_id by
- * Kay Sievers <kay.sievers@vrfy.org>
- *
- * This file may be redistributed under the terms of the
- * GNU Lesser General Public License.
- */
-#include <stdio.h>
-#include <stdlib.h>
-#include <unistd.h>
-#include <string.h>
-#include <stdint.h>
-#include <ctype.h>
-
-#include "superblocks.h"
-
-struct iso9660_date {
- unsigned char year[4];
- unsigned char month[2];
- unsigned char day[2];
- unsigned char hour[2];
- unsigned char minute[2];
- unsigned char second[2];
- unsigned char hundredth[2];
- unsigned char offset;
-} __attribute__ ((packed));
-
-/* PVD - Primary volume descriptor */
-struct iso_volume_descriptor {
- unsigned char vd_type;
- unsigned char vd_id[5];
- unsigned char vd_version;
- unsigned char flags;
- unsigned char system_id[32];
- unsigned char volume_id[32];
- unsigned char unused[8];
- unsigned char space_size[8];
- unsigned char escape_sequences[8];
- unsigned char unused1[222];
- unsigned char publisher_id[128];
- unsigned char unused2[128];
- unsigned char application_id[128];
- unsigned char unused3[111];
- struct iso9660_date created;
- struct iso9660_date modified;
-} __attribute__((packed));
-
-/* Boot Record */
-struct boot_record {
- unsigned char vd_type;
- unsigned char vd_id[5];
- unsigned char vd_version;
- unsigned char boot_system_id[32];
- unsigned char boot_id[32];
- unsigned char unused[1];
-} __attribute__((packed));
-
-#define ISO_SUPERBLOCK_OFFSET 0x8000
-#define ISO_SECTOR_SIZE 0x800
-#define ISO_VD_OFFSET (ISO_SUPERBLOCK_OFFSET + ISO_SECTOR_SIZE)
-#define ISO_VD_BOOT_RECORD 0x0
-#define ISO_VD_SUPPLEMENTARY 0x2
-#define ISO_VD_END 0xff
-#define ISO_VD_MAX 16
-
-struct high_sierra_volume_descriptor {
- unsigned char foo[8];
- unsigned char type;
- unsigned char id[5];
- unsigned char version;
- unsigned char unused1;
- unsigned char system_id[32];
- unsigned char volume_id[32];
-} __attribute__((packed));
-
-/* returns 1 if the begin of @ascii is equal to @utf16 string.
- */
-static int ascii_eq_utf16be(unsigned char *ascii,
- unsigned char *utf16, size_t len)
-{
- size_t a, u;
-
- for (a = 0, u = 0; u < len; a++, u += 2) {
- if (utf16[u] != 0x0 || ascii[a] != utf16[u + 1])
- return 0;
- }
- return 1;
-}
-
-/* old High Sierra format */
-static int probe_iso9660_hsfs(blkid_probe pr, const struct blkid_idmag *mag)
-{
- struct high_sierra_volume_descriptor *iso;
-
- iso = blkid_probe_get_sb(pr, mag, struct high_sierra_volume_descriptor);
- if (!iso)
- return -1;
-
- blkid_probe_set_version(pr, "High Sierra");
- blkid_probe_set_label(pr, iso->volume_id, sizeof(iso->volume_id));
- return 0;
-}
-
-static int probe_iso9660_set_uuid (blkid_probe pr, const struct iso9660_date *date)
-{
- unsigned char buffer[16];
- unsigned int i, zeros = 0;
-
- buffer[0] = date->year[0];
- buffer[1] = date->year[1];
- buffer[2] = date->year[2];
- buffer[3] = date->year[3];
- buffer[4] = date->month[0];
- buffer[5] = date->month[1];
- buffer[6] = date->day[0];
- buffer[7] = date->day[1];
- buffer[8] = date->hour[0];
- buffer[9] = date->hour[1];
- buffer[10] = date->minute[0];
- buffer[11] = date->minute[1];
- buffer[12] = date->second[0];
- buffer[13] = date->second[1];
- buffer[14] = date->hundredth[0];
- buffer[15] = date->hundredth[1];
-
- /* count the number of zeros ('0') in the date buffer */
- for (i = 0, zeros = 0; i < sizeof(buffer); i++)
- if (buffer[i] == '0')
- zeros++;
-
- /* due to the iso9660 standard if all date fields are '0' and offset is 0, the date is unset */
- if (zeros == sizeof(buffer) && date->offset == 0)
- return 0;
-
- /* generate an UUID using this date and return success */
- blkid_probe_sprintf_uuid (pr, buffer, sizeof(buffer),
- "%c%c%c%c-%c%c-%c%c-%c%c-%c%c-%c%c-%c%c",
- buffer[0], buffer[1], buffer[2], buffer[3],
- buffer[4], buffer[5],
- buffer[6], buffer[7],
- buffer[8], buffer[9],
- buffer[10], buffer[11],
- buffer[12], buffer[13],
- buffer[14], buffer[15]);
-
- return 1;
-}
-
-static int is_str_empty(const unsigned char *str, size_t len)
-{
- size_t i;
-
- if (!str || !*str)
- return 1;
-
- for (i = 0; i < len; i++)
- if (!isspace(str[i]))
- return 0;
- return 1;
-}
-
-/* iso9660 [+ Microsoft Joliet Extension] */
-int probe_iso9660(blkid_probe pr, const struct blkid_idmag *mag)
-{
- struct iso_volume_descriptor *iso;
- unsigned char label[32];
- int i;
- int off;
-
- if (strcmp(mag->magic, "CDROM") == 0)
- return probe_iso9660_hsfs(pr, mag);
-
- iso = blkid_probe_get_sb(pr, mag, struct iso_volume_descriptor);
- if (!iso)
- return -1;
-
- memcpy(label, iso->volume_id, sizeof(label));
-
- if (!is_str_empty(iso->system_id, sizeof(iso->system_id)))
- blkid_probe_set_id_label(pr, "SYSTEM_ID",
- iso->system_id, sizeof(iso->system_id));
-
- if (!is_str_empty(iso->publisher_id, sizeof(iso->publisher_id)))
- blkid_probe_set_id_label(pr, "PUBLISHER_ID",
- iso->publisher_id, sizeof(iso->publisher_id));
-
- if (!is_str_empty(iso->application_id, sizeof(iso->application_id)))
- blkid_probe_set_id_label(pr, "APPLICATION_ID",
- iso->application_id, sizeof(iso->application_id));
-
- /* create an UUID using the modified/created date */
- if (! probe_iso9660_set_uuid(pr, &iso->modified))
- probe_iso9660_set_uuid(pr, &iso->created);
-
- /* Joliet Extension and Boot Record */
- off = ISO_VD_OFFSET;
- for (i = 0; i < ISO_VD_MAX; i++) {
- struct boot_record *boot= (struct boot_record *)
- blkid_probe_get_buffer(pr,
- off,
- max(sizeof(struct boot_record),
- sizeof(struct iso_volume_descriptor)));
-
- if (boot == NULL || boot->vd_type == ISO_VD_END)
- break;
-
- if (boot->vd_type == ISO_VD_BOOT_RECORD) {
- if (!is_str_empty(boot->boot_system_id,
- sizeof(boot->boot_system_id)))
- blkid_probe_set_id_label(pr, "BOOT_SYSTEM_ID",
- boot->boot_system_id,
- sizeof(boot->boot_system_id));
- off += ISO_SECTOR_SIZE;
- continue;
- }
-
- /* Not a Boot record, lets see if its supplemntary volume descriptor */
- iso = (struct iso_volume_descriptor *) boot;
-
- if (iso->vd_type != ISO_VD_SUPPLEMENTARY) {
- off += ISO_SECTOR_SIZE;
- continue;
- }
-
- if (memcmp(iso->escape_sequences, "%/@", 3) == 0 ||
- memcmp(iso->escape_sequences, "%/C", 3) == 0 ||
- memcmp(iso->escape_sequences, "%/E", 3) == 0) {
-
- blkid_probe_set_version(pr, "Joliet Extension");
-
- /* Is the Joliet (UTF16BE) label equal to the label in
- * the PVD? If yes, use PVD label. The Jolied version
- * of the label could be trimed (because UTF16..).
- */
- if (ascii_eq_utf16be(label, iso->volume_id, 32))
- break;
-
- blkid_probe_set_utf8label(pr,
- iso->volume_id,
- sizeof(iso->volume_id),
- BLKID_ENC_UTF16BE);
- goto has_label;
- }
- off += ISO_SECTOR_SIZE;
- }
-
- /* Joliet not found, let use standard iso label */
- blkid_probe_set_label(pr, label, sizeof(label));
-
-has_label:
- return 0;
-}
-
-const struct blkid_idinfo iso9660_idinfo =
-{
- .name = "iso9660",
- .usage = BLKID_USAGE_FILESYSTEM,
- .probefunc = probe_iso9660,
- .flags = BLKID_IDINFO_TOLERANT,
- .magics =
- {
- { .magic = "CD001", .len = 5, .kboff = 32, .sboff = 1 },
- { .magic = "CDROM", .len = 5, .kboff = 32, .sboff = 9 },
- { NULL }
- }
-};
-
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-14 21:45:51 +0200