2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se>
4 * Copyright (c) 2009-2012 Michihiro NAKAJIMA
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 #include "archive_platform.h"
29 __FBSDID("$FreeBSD$");
34 /* #include <stdint.h> */ /* See archive_platform.h */
48 #include "archive_endian.h"
49 #include "archive_entry.h"
50 #include "archive_entry_locale.h"
51 #include "archive_private.h"
52 #include "archive_read_private.h"
53 #include "archive_string.h"
56 * An overview of ISO 9660 format:
58 * Each disk is laid out as follows:
59 * * 32k reserved for private use
60 * * Volume descriptor table. Each volume descriptor
61 * is 2k and specifies basic format information.
62 * The "Primary Volume Descriptor" (PVD) is defined by the
63 * standard and should always be present; other volume
64 * descriptors include various vendor-specific extensions.
65 * * Files and directories. Each file/dir is specified by
66 * an "extent" (starting sector and length in bytes).
67 * Dirs are just files with directory records packed one
68 * after another. The PVD contains a single dir entry
69 * specifying the location of the root directory. Everything
70 * else follows from there.
72 * This module works by first reading the volume descriptors, then
73 * building a list of directory entries, sorted by starting
74 * sector. At each step, I look for the earliest dir entry that
75 * hasn't yet been read, seek forward to that location and read
76 * that entry. If it's a dir, I slurp in the new dir entries and
77 * add them to the heap; if it's a regular file, I return the
78 * corresponding archive_entry and wait for the client to request
79 * the file body. This strategy allows us to read most compliant
80 * CDs with a single pass through the data, as required by libarchive.
82 #define LOGICAL_BLOCK_SIZE 2048
83 #define SYSTEM_AREA_BLOCK 16
85 /* Structure of on-disk primary volume descriptor. */
86 #define PVD_type_offset 0
87 #define PVD_type_size 1
88 #define PVD_id_offset (PVD_type_offset + PVD_type_size)
90 #define PVD_version_offset (PVD_id_offset + PVD_id_size)
91 #define PVD_version_size 1
92 #define PVD_reserved1_offset (PVD_version_offset + PVD_version_size)
93 #define PVD_reserved1_size 1
94 #define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size)
95 #define PVD_system_id_size 32
96 #define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size)
97 #define PVD_volume_id_size 32
98 #define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size)
99 #define PVD_reserved2_size 8
100 #define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size)
101 #define PVD_volume_space_size_size 8
102 #define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size)
103 #define PVD_reserved3_size 32
104 #define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size)
105 #define PVD_volume_set_size_size 4
106 #define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size)
107 #define PVD_volume_sequence_number_size 4
108 #define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size)
109 #define PVD_logical_block_size_size 4
110 #define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size)
111 #define PVD_path_table_size_size 8
112 #define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size)
113 #define PVD_type_1_path_table_size 4
114 #define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size)
115 #define PVD_opt_type_1_path_table_size 4
116 #define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size)
117 #define PVD_type_m_path_table_size 4
118 #define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size)
119 #define PVD_opt_type_m_path_table_size 4
120 #define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size)
121 #define PVD_root_directory_record_size 34
122 #define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size)
123 #define PVD_volume_set_id_size 128
124 #define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size)
125 #define PVD_publisher_id_size 128
126 #define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size)
127 #define PVD_preparer_id_size 128
128 #define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size)
129 #define PVD_application_id_size 128
130 #define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size)
131 #define PVD_copyright_file_id_size 37
132 #define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size)
133 #define PVD_abstract_file_id_size 37
134 #define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size)
135 #define PVD_bibliographic_file_id_size 37
136 #define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size)
137 #define PVD_creation_date_size 17
138 #define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size)
139 #define PVD_modification_date_size 17
140 #define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size)
141 #define PVD_expiration_date_size 17
142 #define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size)
143 #define PVD_effective_date_size 17
144 #define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size)
145 #define PVD_file_structure_version_size 1
146 #define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size)
147 #define PVD_reserved4_size 1
148 #define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size)
149 #define PVD_application_data_size 512
150 #define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size)
151 #define PVD_reserved5_size (2048 - PVD_reserved5_offset)
153 /* TODO: It would make future maintenance easier to just hardcode the
154 * above values. In particular, ECMA119 states the offsets as part of
155 * the standard. That would eliminate the need for the following check.*/
156 #if PVD_reserved5_offset != 1395
157 #error PVD offset and size definitions are wrong.
161 /* Structure of optional on-disk supplementary volume descriptor. */
162 #define SVD_type_offset 0
163 #define SVD_type_size 1
164 #define SVD_id_offset (SVD_type_offset + SVD_type_size)
165 #define SVD_id_size 5
166 #define SVD_version_offset (SVD_id_offset + SVD_id_size)
167 #define SVD_version_size 1
169 #define SVD_reserved1_offset 72
170 #define SVD_reserved1_size 8
171 #define SVD_volume_space_size_offset 80
172 #define SVD_volume_space_size_size 8
173 #define SVD_escape_sequences_offset (SVD_volume_space_size_offset + SVD_volume_space_size_size)
174 #define SVD_escape_sequences_size 32
176 #define SVD_logical_block_size_offset 128
177 #define SVD_logical_block_size_size 4
178 #define SVD_type_L_path_table_offset 140
179 #define SVD_type_M_path_table_offset 148
181 #define SVD_root_directory_record_offset 156
182 #define SVD_root_directory_record_size 34
183 #define SVD_file_structure_version_offset 881
184 #define SVD_reserved2_offset 882
185 #define SVD_reserved2_size 1
186 #define SVD_reserved3_offset 1395
187 #define SVD_reserved3_size 653
189 /* FIXME: validate correctness of last SVD entry offset. */
191 /* Structure of an on-disk directory record. */
192 /* Note: ISO9660 stores each multi-byte integer twice, once in
193 * each byte order. The sizes here are the size of just one
194 * of the two integers. (This is why the offset of a field isn't
195 * the same as the offset+size of the previous field.) */
196 #define DR_length_offset 0
197 #define DR_length_size 1
198 #define DR_ext_attr_length_offset 1
199 #define DR_ext_attr_length_size 1
200 #define DR_extent_offset 2
201 #define DR_extent_size 4
202 #define DR_size_offset 10
203 #define DR_size_size 4
204 #define DR_date_offset 18
205 #define DR_date_size 7
206 #define DR_flags_offset 25
207 #define DR_flags_size 1
208 #define DR_file_unit_size_offset 26
209 #define DR_file_unit_size_size 1
210 #define DR_interleave_offset 27
211 #define DR_interleave_size 1
212 #define DR_volume_sequence_number_offset 28
213 #define DR_volume_sequence_number_size 2
214 #define DR_name_len_offset 32
215 #define DR_name_len_size 1
216 #define DR_name_offset 33
219 static const unsigned char zisofs_magic[8] = {
220 0x37, 0xE4, 0x53, 0x96, 0xC9, 0xDB, 0xD6, 0x07
224 /* Set 1 if this file compressed by paged zlib */
226 int pz_log2_bs; /* Log2 of block size */
227 uint64_t pz_uncompressed_size;
230 unsigned char *uncompressed_buffer;
231 size_t uncompressed_buffer_size;
234 unsigned char header[16];
237 unsigned char *block_pointers;
238 size_t block_pointers_alloc;
239 size_t block_pointers_size;
240 size_t block_pointers_avail;
242 uint32_t block_avail;
249 /* Set 1 if this file compressed by paged zlib */
255 uint64_t offset;/* Offset on disk. */
256 uint64_t size; /* File size in bytes. */
257 struct content *next;
260 /* In-memory storage for a directory record. */
262 struct file_info *use_next;
263 struct file_info *parent;
264 struct file_info *next;
265 struct file_info *re_next;
267 uint64_t key; /* Heap Key. */
268 uint64_t offset; /* Offset on disk. */
269 uint64_t size; /* File size in bytes. */
270 uint32_t ce_offset; /* Offset of CE. */
271 uint32_t ce_size; /* Size of CE. */
272 char rr_moved; /* Flag to rr_moved. */
273 char rr_moved_has_re_only;
274 char re; /* Having RRIP "RE" extension. */
276 uint64_t cl_offset; /* Having RRIP "CL" extension. */
277 int birthtime_is_set;
278 time_t birthtime; /* File created time. */
279 time_t mtime; /* File last modified time. */
280 time_t atime; /* File last accessed time. */
281 time_t ctime; /* File attribute change time. */
282 uint64_t rdev; /* Device number. */
288 struct archive_string name; /* Pathname */
289 unsigned char *utf16be_name;
290 size_t utf16be_bytes;
291 char name_continues; /* Non-zero if name continues */
292 struct archive_string symlink;
293 char symlink_continues; /* Non-zero if link continues */
294 /* Set 1 if this file compressed by paged zlib(zisofs) */
296 int pz_log2_bs; /* Log2 of block size */
297 uint64_t pz_uncompressed_size;
298 /* Set 1 if this file is multi extent. */
301 struct content *first;
302 struct content **last;
305 struct file_info *first;
306 struct file_info **last;
311 struct file_info **files;
318 #define ISO9660_MAGIC 0x96609660
320 int opt_support_joliet;
321 int opt_support_rockridge;
323 struct archive_string pathname;
324 char seenRockridge; /* Set true if RR extensions are used. */
325 char seenSUSP; /* Set true if SUSP is beging used. */
328 unsigned char suspOffset;
329 struct file_info *rr_moved;
330 struct read_ce_queue {
332 uint64_t offset;/* Offset of CE on disk. */
333 struct file_info *file;
339 int64_t previous_number;
340 struct archive_string previous_pathname;
342 struct file_info *use_files;
343 struct heap_queue pending_files;
345 struct file_info *first;
346 struct file_info **last;
349 struct file_info *first;
350 struct file_info **last;
353 uint64_t current_position;
354 ssize_t logical_block_size;
355 uint64_t volume_size; /* Total size of volume in bytes. */
356 int32_t volume_block;/* Total size of volume in logical blocks. */
359 int location; /* Location of Extent. */
363 int64_t entry_sparse_offset;
364 int64_t entry_bytes_remaining;
365 size_t entry_bytes_unconsumed;
366 struct zisofs entry_zisofs;
367 struct content *entry_content;
368 struct archive_string_conv *sconv_utf16be;
370 * Buffers for a full pathname in UTF-16BE in Joliet extensions.
372 #define UTF16_NAME_MAX 1024
373 unsigned char *utf16be_path;
374 size_t utf16be_path_len;
375 unsigned char *utf16be_previous_path;
376 size_t utf16be_previous_path_len;
377 /* Null buufer used in bidder to improve its performance. */
378 unsigned char null[2048];
381 static int archive_read_format_iso9660_bid(struct archive_read *, int);
382 static int archive_read_format_iso9660_options(struct archive_read *,
383 const char *, const char *);
384 static int archive_read_format_iso9660_cleanup(struct archive_read *);
385 static int archive_read_format_iso9660_read_data(struct archive_read *,
386 const void **, size_t *, int64_t *);
387 static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
388 static int archive_read_format_iso9660_read_header(struct archive_read *,
389 struct archive_entry *);
390 static const char *build_pathname(struct archive_string *, struct file_info *);
391 static int build_pathname_utf16be(unsigned char *, size_t, size_t *,
394 static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
396 static time_t time_from_tm(struct tm *);
397 static time_t isodate17(const unsigned char *);
398 static time_t isodate7(const unsigned char *);
399 static int isBootRecord(struct iso9660 *, const unsigned char *);
400 static int isVolumePartition(struct iso9660 *, const unsigned char *);
401 static int isVDSetTerminator(struct iso9660 *, const unsigned char *);
402 static int isJolietSVD(struct iso9660 *, const unsigned char *);
403 static int isSVD(struct iso9660 *, const unsigned char *);
404 static int isEVD(struct iso9660 *, const unsigned char *);
405 static int isPVD(struct iso9660 *, const unsigned char *);
406 static int next_cache_entry(struct archive_read *, struct iso9660 *,
407 struct file_info **);
408 static int next_entry_seek(struct archive_read *, struct iso9660 *,
409 struct file_info **);
410 static struct file_info *
411 parse_file_info(struct archive_read *a,
412 struct file_info *parent, const unsigned char *isodirrec);
413 static int parse_rockridge(struct archive_read *a,
414 struct file_info *file, const unsigned char *start,
415 const unsigned char *end);
416 static int register_CE(struct archive_read *a, int32_t location,
417 struct file_info *file);
418 static int read_CE(struct archive_read *a, struct iso9660 *iso9660);
419 static void parse_rockridge_NM1(struct file_info *,
420 const unsigned char *, int);
421 static void parse_rockridge_SL1(struct file_info *,
422 const unsigned char *, int);
423 static void parse_rockridge_TF1(struct file_info *,
424 const unsigned char *, int);
425 static void parse_rockridge_ZF1(struct file_info *,
426 const unsigned char *, int);
427 static void register_file(struct iso9660 *, struct file_info *);
428 static void release_files(struct iso9660 *);
429 static unsigned toi(const void *p, int n);
430 static inline void re_add_entry(struct iso9660 *, struct file_info *);
431 static inline struct file_info * re_get_entry(struct iso9660 *);
432 static inline int rede_add_entry(struct file_info *);
433 static inline struct file_info * rede_get_entry(struct file_info *);
434 static inline void cache_add_entry(struct iso9660 *iso9660,
435 struct file_info *file);
436 static inline struct file_info *cache_get_entry(struct iso9660 *iso9660);
437 static int heap_add_entry(struct archive_read *a, struct heap_queue *heap,
438 struct file_info *file, uint64_t key);
439 static struct file_info *heap_get_entry(struct heap_queue *heap);
441 #define add_entry(arch, iso9660, file) \
442 heap_add_entry(arch, &((iso9660)->pending_files), file, file->offset)
443 #define next_entry(iso9660) \
444 heap_get_entry(&((iso9660)->pending_files))
447 archive_read_support_format_iso9660(struct archive *_a)
449 struct archive_read *a = (struct archive_read *)_a;
450 struct iso9660 *iso9660;
453 archive_check_magic(_a, ARCHIVE_READ_MAGIC,
454 ARCHIVE_STATE_NEW, "archive_read_support_format_iso9660");
456 iso9660 = (struct iso9660 *)calloc(1, sizeof(*iso9660));
457 if (iso9660 == NULL) {
458 archive_set_error(&a->archive, ENOMEM,
459 "Can't allocate iso9660 data");
460 return (ARCHIVE_FATAL);
462 iso9660->magic = ISO9660_MAGIC;
463 iso9660->cache_files.first = NULL;
464 iso9660->cache_files.last = &(iso9660->cache_files.first);
465 iso9660->re_files.first = NULL;
466 iso9660->re_files.last = &(iso9660->re_files.first);
467 /* Enable to support Joliet extensions by default. */
468 iso9660->opt_support_joliet = 1;
469 /* Enable to support Rock Ridge extensions by default. */
470 iso9660->opt_support_rockridge = 1;
472 r = __archive_read_register_format(a,
475 archive_read_format_iso9660_bid,
476 archive_read_format_iso9660_options,
477 archive_read_format_iso9660_read_header,
478 archive_read_format_iso9660_read_data,
479 archive_read_format_iso9660_read_data_skip,
481 archive_read_format_iso9660_cleanup);
483 if (r != ARCHIVE_OK) {
492 archive_read_format_iso9660_bid(struct archive_read *a, int best_bid)
494 struct iso9660 *iso9660;
496 const unsigned char *p;
499 /* If there's already a better bid than we can ever
500 make, don't bother testing. */
504 iso9660 = (struct iso9660 *)(a->format->data);
507 * Skip the first 32k (reserved area) and get the first
508 * 8 sectors of the volume descriptor table. Of course,
509 * if the I/O layer gives us more, we'll take it.
511 #define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE)
512 p = __archive_read_ahead(a,
513 RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE,
518 /* Skip the reserved area. */
519 bytes_read -= RESERVED_AREA;
522 /* Check each volume descriptor. */
524 for (; bytes_read > LOGICAL_BLOCK_SIZE;
525 bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) {
526 /* Do not handle undefined Volume Descriptor Type. */
527 if (p[0] >= 4 && p[0] <= 254)
529 /* Standard Identifier must be "CD001" */
530 if (memcmp(p + 1, "CD001", 5) != 0)
532 if (isPVD(iso9660, p))
534 if (!iso9660->joliet.location) {
535 if (isJolietSVD(iso9660, p))
538 if (isBootRecord(iso9660, p))
540 if (isEVD(iso9660, p))
542 if (isSVD(iso9660, p))
544 if (isVolumePartition(iso9660, p))
546 if (isVDSetTerminator(iso9660, p)) {
553 * ISO 9660 format must have Primary Volume Descriptor and
554 * Volume Descriptor Set Terminator.
556 if (seenTerminator && iso9660->primary.location > 16)
559 /* We didn't find a valid PVD; return a bid of zero. */
564 archive_read_format_iso9660_options(struct archive_read *a,
565 const char *key, const char *val)
567 struct iso9660 *iso9660;
569 iso9660 = (struct iso9660 *)(a->format->data);
571 if (strcmp(key, "joliet") == 0) {
572 if (val == NULL || strcmp(val, "off") == 0 ||
573 strcmp(val, "ignore") == 0 ||
574 strcmp(val, "disable") == 0 ||
575 strcmp(val, "0") == 0)
576 iso9660->opt_support_joliet = 0;
578 iso9660->opt_support_joliet = 1;
581 if (strcmp(key, "rockridge") == 0 ||
582 strcmp(key, "Rockridge") == 0) {
583 iso9660->opt_support_rockridge = val != NULL;
587 /* Note: The "warn" return is just to inform the options
588 * supervisor that we didn't handle it. It will generate
589 * a suitable error if no one used this option. */
590 return (ARCHIVE_WARN);
594 isNull(struct iso9660 *iso9660, const unsigned char *h, unsigned offset,
598 while (bytes >= sizeof(iso9660->null)) {
599 if (!memcmp(iso9660->null, h + offset, sizeof(iso9660->null)))
601 offset += sizeof(iso9660->null);
602 bytes -= sizeof(iso9660->null);
605 return memcmp(iso9660->null, h + offset, bytes) == 0;
611 isBootRecord(struct iso9660 *iso9660, const unsigned char *h)
613 (void)iso9660; /* UNUSED */
615 /* Type of the Volume Descriptor Boot Record must be 0. */
619 /* Volume Descriptor Version must be 1. */
627 isVolumePartition(struct iso9660 *iso9660, const unsigned char *h)
631 /* Type of the Volume Partition Descriptor must be 3. */
635 /* Volume Descriptor Version must be 1. */
642 location = archive_le32dec(h + 72);
643 if (location <= SYSTEM_AREA_BLOCK ||
644 location >= iso9660->volume_block)
646 if ((uint32_t)location != archive_be32dec(h + 76))
653 isVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h)
655 (void)iso9660; /* UNUSED */
657 /* Type of the Volume Descriptor Set Terminator must be 255. */
661 /* Volume Descriptor Version must be 1. */
665 /* Reserved field must be 0. */
666 if (!isNull(iso9660, h, 7, 2048-7))
673 isJolietSVD(struct iso9660 *iso9660, const unsigned char *h)
675 const unsigned char *p;
676 ssize_t logical_block_size;
677 int32_t volume_block;
679 /* Check if current sector is a kind of Supplementary Volume
681 if (!isSVD(iso9660, h))
684 /* FIXME: do more validations according to joliet spec. */
686 /* check if this SVD contains joliet extension! */
687 p = h + SVD_escape_sequences_offset;
688 /* N.B. Joliet spec says p[1] == '\\', but.... */
689 if (p[0] == '%' && p[1] == '/') {
694 else if (p[2] == 'C')
696 else if (p[2] == 'E')
698 else /* not joliet */
701 iso9660->seenJoliet = level;
703 } else /* not joliet */
707 archive_le16dec(h + SVD_logical_block_size_offset);
708 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
710 iso9660->logical_block_size = logical_block_size;
711 iso9660->volume_block = volume_block;
712 iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
713 /* Read Root Directory Record in Volume Descriptor. */
714 p = h + SVD_root_directory_record_offset;
715 iso9660->joliet.location = archive_le32dec(p + DR_extent_offset);
716 iso9660->joliet.size = archive_le32dec(p + DR_size_offset);
722 isSVD(struct iso9660 *iso9660, const unsigned char *h)
724 const unsigned char *p;
725 ssize_t logical_block_size;
726 int32_t volume_block;
729 (void)iso9660; /* UNUSED */
731 /* Type 2 means it's a SVD. */
732 if (h[SVD_type_offset] != 2)
735 /* Reserved field must be 0. */
736 if (!isNull(iso9660, h, SVD_reserved1_offset, SVD_reserved1_size))
738 if (!isNull(iso9660, h, SVD_reserved2_offset, SVD_reserved2_size))
740 if (!isNull(iso9660, h, SVD_reserved3_offset, SVD_reserved3_size))
743 /* File structure version must be 1 for ISO9660/ECMA119. */
744 if (h[SVD_file_structure_version_offset] != 1)
748 archive_le16dec(h + SVD_logical_block_size_offset);
749 if (logical_block_size <= 0)
752 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
753 if (volume_block <= SYSTEM_AREA_BLOCK+4)
756 /* Location of Occurrence of Type L Path Table must be
757 * available location,
758 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
759 location = archive_le32dec(h+SVD_type_L_path_table_offset);
760 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
763 /* The Type M Path Table must be at a valid location (WinISO
764 * and probably other programs omit this, so we allow zero)
766 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
767 location = archive_be32dec(h+SVD_type_M_path_table_offset);
768 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
769 || location >= volume_block)
772 /* Read Root Directory Record in Volume Descriptor. */
773 p = h + SVD_root_directory_record_offset;
774 if (p[DR_length_offset] != 34)
781 isEVD(struct iso9660 *iso9660, const unsigned char *h)
783 const unsigned char *p;
784 ssize_t logical_block_size;
785 int32_t volume_block;
788 (void)iso9660; /* UNUSED */
790 /* Type of the Enhanced Volume Descriptor must be 2. */
791 if (h[PVD_type_offset] != 2)
794 /* EVD version must be 2. */
795 if (h[PVD_version_offset] != 2)
798 /* Reserved field must be 0. */
799 if (h[PVD_reserved1_offset] != 0)
802 /* Reserved field must be 0. */
803 if (!isNull(iso9660, h, PVD_reserved2_offset, PVD_reserved2_size))
806 /* Reserved field must be 0. */
807 if (!isNull(iso9660, h, PVD_reserved3_offset, PVD_reserved3_size))
810 /* Logical block size must be > 0. */
811 /* I've looked at Ecma 119 and can't find any stronger
812 * restriction on this field. */
814 archive_le16dec(h + PVD_logical_block_size_offset);
815 if (logical_block_size <= 0)
819 archive_le32dec(h + PVD_volume_space_size_offset);
820 if (volume_block <= SYSTEM_AREA_BLOCK+4)
823 /* File structure version must be 2 for ISO9660:1999. */
824 if (h[PVD_file_structure_version_offset] != 2)
827 /* Location of Occurrence of Type L Path Table must be
828 * available location,
829 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
830 location = archive_le32dec(h+PVD_type_1_path_table_offset);
831 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
834 /* Location of Occurrence of Type M Path Table must be
835 * available location,
836 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
837 location = archive_be32dec(h+PVD_type_m_path_table_offset);
838 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
839 || location >= volume_block)
842 /* Reserved field must be 0. */
843 if (!isNull(iso9660, h, PVD_reserved4_offset, PVD_reserved4_size))
846 /* Reserved field must be 0. */
847 if (!isNull(iso9660, h, PVD_reserved5_offset, PVD_reserved5_size))
850 /* Read Root Directory Record in Volume Descriptor. */
851 p = h + PVD_root_directory_record_offset;
852 if (p[DR_length_offset] != 34)
859 isPVD(struct iso9660 *iso9660, const unsigned char *h)
861 const unsigned char *p;
862 ssize_t logical_block_size;
863 int32_t volume_block;
867 /* Type of the Primary Volume Descriptor must be 1. */
868 if (h[PVD_type_offset] != 1)
871 /* PVD version must be 1. */
872 if (h[PVD_version_offset] != 1)
875 /* Reserved field must be 0. */
876 if (h[PVD_reserved1_offset] != 0)
879 /* Reserved field must be 0. */
880 if (!isNull(iso9660, h, PVD_reserved2_offset, PVD_reserved2_size))
883 /* Reserved field must be 0. */
884 if (!isNull(iso9660, h, PVD_reserved3_offset, PVD_reserved3_size))
887 /* Logical block size must be > 0. */
888 /* I've looked at Ecma 119 and can't find any stronger
889 * restriction on this field. */
891 archive_le16dec(h + PVD_logical_block_size_offset);
892 if (logical_block_size <= 0)
895 volume_block = archive_le32dec(h + PVD_volume_space_size_offset);
896 if (volume_block <= SYSTEM_AREA_BLOCK+4)
899 /* File structure version must be 1 for ISO9660/ECMA119. */
900 if (h[PVD_file_structure_version_offset] != 1)
903 /* Location of Occurrence of Type L Path Table must be
904 * available location,
905 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
906 location = archive_le32dec(h+PVD_type_1_path_table_offset);
907 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
910 /* The Type M Path Table must also be at a valid location
911 * (although ECMA 119 requires a Type M Path Table, WinISO and
912 * probably other programs omit it, so we permit a zero here)
914 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
915 location = archive_be32dec(h+PVD_type_m_path_table_offset);
916 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
917 || location >= volume_block)
920 /* Reserved field must be 0. */
921 /* But accept NetBSD/FreeBSD "makefs" images with 0x20 here. */
922 for (i = 0; i < PVD_reserved4_size; ++i)
923 if (h[PVD_reserved4_offset + i] != 0
924 && h[PVD_reserved4_offset + i] != 0x20)
927 /* Reserved field must be 0. */
928 if (!isNull(iso9660, h, PVD_reserved5_offset, PVD_reserved5_size))
931 /* XXX TODO: Check other values for sanity; reject more
932 * malformed PVDs. XXX */
934 /* Read Root Directory Record in Volume Descriptor. */
935 p = h + PVD_root_directory_record_offset;
936 if (p[DR_length_offset] != 34)
939 if (!iso9660->primary.location) {
940 iso9660->logical_block_size = logical_block_size;
941 iso9660->volume_block = volume_block;
942 iso9660->volume_size =
943 logical_block_size * (uint64_t)volume_block;
944 iso9660->primary.location =
945 archive_le32dec(p + DR_extent_offset);
946 iso9660->primary.size = archive_le32dec(p + DR_size_offset);
953 read_children(struct archive_read *a, struct file_info *parent)
955 struct iso9660 *iso9660;
956 const unsigned char *b, *p;
957 struct file_info *multi;
958 size_t step, skip_size;
960 iso9660 = (struct iso9660 *)(a->format->data);
961 /* flush any remaining bytes from the last round to ensure
962 * we're positioned */
963 if (iso9660->entry_bytes_unconsumed) {
964 __archive_read_consume(a, iso9660->entry_bytes_unconsumed);
965 iso9660->entry_bytes_unconsumed = 0;
967 if (iso9660->current_position > parent->offset) {
968 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
969 "Ignoring out-of-order directory (%s) %jd > %jd",
971 (intmax_t)iso9660->current_position,
972 (intmax_t)parent->offset);
973 return (ARCHIVE_WARN);
975 if (parent->offset + parent->size > iso9660->volume_size) {
976 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
977 "Directory is beyond end-of-media: %s",
979 return (ARCHIVE_WARN);
981 if (iso9660->current_position < parent->offset) {
984 skipsize = parent->offset - iso9660->current_position;
985 skipsize = __archive_read_consume(a, skipsize);
987 return ((int)skipsize);
988 iso9660->current_position = parent->offset;
991 step = (size_t)(((parent->size + iso9660->logical_block_size -1) /
992 iso9660->logical_block_size) * iso9660->logical_block_size);
993 b = __archive_read_ahead(a, step, NULL);
995 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
996 "Failed to read full block when scanning "
997 "ISO9660 directory list");
998 return (ARCHIVE_FATAL);
1000 iso9660->current_position += step;
1005 b += iso9660->logical_block_size;
1006 step -= iso9660->logical_block_size;
1007 for (; *p != 0 && p < b && p + *p <= b; p += *p) {
1008 struct file_info *child;
1010 /* N.B.: these special directory identifiers
1011 * are 8 bit "values" even on a
1012 * Joliet CD with UCS-2 (16bit) encoding.
1015 /* Skip '.' entry. */
1016 if (*(p + DR_name_len_offset) == 1
1017 && *(p + DR_name_offset) == '\0')
1019 /* Skip '..' entry. */
1020 if (*(p + DR_name_len_offset) == 1
1021 && *(p + DR_name_offset) == '\001')
1023 child = parse_file_info(a, parent, p);
1024 if (child == NULL) {
1025 __archive_read_consume(a, skip_size);
1026 return (ARCHIVE_FATAL);
1028 if (child->cl_offset == 0 &&
1029 (child->multi_extent || multi != NULL)) {
1030 struct content *con;
1032 if (multi == NULL) {
1034 multi->contents.first = NULL;
1035 multi->contents.last =
1036 &(multi->contents.first);
1038 con = malloc(sizeof(struct content));
1041 &a->archive, ENOMEM,
1042 "No memory for multi extent");
1043 __archive_read_consume(a, skip_size);
1044 return (ARCHIVE_FATAL);
1046 con->offset = child->offset;
1047 con->size = child->size;
1049 *multi->contents.last = con;
1050 multi->contents.last = &(con->next);
1051 if (multi == child) {
1052 if (add_entry(a, iso9660, child)
1054 return (ARCHIVE_FATAL);
1056 multi->size += child->size;
1057 if (!child->multi_extent)
1061 if (add_entry(a, iso9660, child) != ARCHIVE_OK)
1062 return (ARCHIVE_FATAL);
1066 __archive_read_consume(a, skip_size);
1068 /* Read data which recorded by RRIP "CE" extension. */
1069 if (read_CE(a, iso9660) != ARCHIVE_OK)
1070 return (ARCHIVE_FATAL);
1072 return (ARCHIVE_OK);
1076 choose_volume(struct archive_read *a, struct iso9660 *iso9660)
1078 struct file_info *file;
1084 vd = &(iso9660->primary);
1085 if (!iso9660->opt_support_joliet)
1086 iso9660->seenJoliet = 0;
1087 if (iso9660->seenJoliet &&
1088 vd->location > iso9660->joliet.location)
1089 /* This condition is unlikely; by way of caution. */
1090 vd = &(iso9660->joliet);
1092 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1093 skipsize = __archive_read_consume(a, skipsize);
1095 return ((int)skipsize);
1096 iso9660->current_position = skipsize;
1098 block = __archive_read_ahead(a, vd->size, NULL);
1099 if (block == NULL) {
1100 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1101 "Failed to read full block when scanning "
1102 "ISO9660 directory list");
1103 return (ARCHIVE_FATAL);
1107 * While reading Root Directory, flag seenJoliet must be zero to
1108 * avoid converting special name 0x00(Current Directory) and
1109 * next byte to UCS2.
1111 seenJoliet = iso9660->seenJoliet;/* Save flag. */
1112 iso9660->seenJoliet = 0;
1113 file = parse_file_info(a, NULL, block);
1115 return (ARCHIVE_FATAL);
1116 iso9660->seenJoliet = seenJoliet;
1119 * If the iso image has both RockRidge and Joliet, we preferentially
1120 * use RockRidge Extensions rather than Joliet ones.
1122 if (vd == &(iso9660->primary) && iso9660->seenRockridge
1123 && iso9660->seenJoliet)
1124 iso9660->seenJoliet = 0;
1126 if (vd == &(iso9660->primary) && !iso9660->seenRockridge
1127 && iso9660->seenJoliet) {
1128 /* Switch reading data from primary to joliet. */
1129 vd = &(iso9660->joliet);
1130 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1131 skipsize -= iso9660->current_position;
1132 skipsize = __archive_read_consume(a, skipsize);
1134 return ((int)skipsize);
1135 iso9660->current_position += skipsize;
1137 block = __archive_read_ahead(a, vd->size, NULL);
1138 if (block == NULL) {
1139 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1140 "Failed to read full block when scanning "
1141 "ISO9660 directory list");
1142 return (ARCHIVE_FATAL);
1144 iso9660->seenJoliet = 0;
1145 file = parse_file_info(a, NULL, block);
1147 return (ARCHIVE_FATAL);
1148 iso9660->seenJoliet = seenJoliet;
1151 /* Store the root directory in the pending list. */
1152 if (add_entry(a, iso9660, file) != ARCHIVE_OK)
1153 return (ARCHIVE_FATAL);
1154 if (iso9660->seenRockridge) {
1155 a->archive.archive_format = ARCHIVE_FORMAT_ISO9660_ROCKRIDGE;
1156 a->archive.archive_format_name =
1157 "ISO9660 with Rockridge extensions";
1160 return (ARCHIVE_OK);
1164 archive_read_format_iso9660_read_header(struct archive_read *a,
1165 struct archive_entry *entry)
1167 struct iso9660 *iso9660;
1168 struct file_info *file;
1169 int r, rd_r = ARCHIVE_OK;
1171 iso9660 = (struct iso9660 *)(a->format->data);
1173 if (!a->archive.archive_format) {
1174 a->archive.archive_format = ARCHIVE_FORMAT_ISO9660;
1175 a->archive.archive_format_name = "ISO9660";
1178 if (iso9660->current_position == 0) {
1179 r = choose_volume(a, iso9660);
1180 if (r != ARCHIVE_OK)
1184 file = NULL;/* Eliminate a warning. */
1185 /* Get the next entry that appears after the current offset. */
1186 r = next_entry_seek(a, iso9660, &file);
1187 if (r != ARCHIVE_OK)
1190 if (iso9660->seenJoliet) {
1192 * Convert UTF-16BE of a filename to local locale MBS
1193 * and store the result into a filename field.
1195 if (iso9660->sconv_utf16be == NULL) {
1196 iso9660->sconv_utf16be =
1197 archive_string_conversion_from_charset(
1198 &(a->archive), "UTF-16BE", 1);
1199 if (iso9660->sconv_utf16be == NULL)
1200 /* Coundn't allocate memory */
1201 return (ARCHIVE_FATAL);
1203 if (iso9660->utf16be_path == NULL) {
1204 iso9660->utf16be_path = malloc(UTF16_NAME_MAX);
1205 if (iso9660->utf16be_path == NULL) {
1206 archive_set_error(&a->archive, ENOMEM,
1208 return (ARCHIVE_FATAL);
1211 if (iso9660->utf16be_previous_path == NULL) {
1212 iso9660->utf16be_previous_path = malloc(UTF16_NAME_MAX);
1213 if (iso9660->utf16be_previous_path == NULL) {
1214 archive_set_error(&a->archive, ENOMEM,
1216 return (ARCHIVE_FATAL);
1220 iso9660->utf16be_path_len = 0;
1221 if (build_pathname_utf16be(iso9660->utf16be_path,
1222 UTF16_NAME_MAX, &(iso9660->utf16be_path_len), file) != 0) {
1223 archive_set_error(&a->archive,
1224 ARCHIVE_ERRNO_FILE_FORMAT,
1225 "Pathname is too long");
1228 r = archive_entry_copy_pathname_l(entry,
1229 (const char *)iso9660->utf16be_path,
1230 iso9660->utf16be_path_len,
1231 iso9660->sconv_utf16be);
1233 if (errno == ENOMEM) {
1234 archive_set_error(&a->archive, ENOMEM,
1235 "No memory for Pathname");
1236 return (ARCHIVE_FATAL);
1238 archive_set_error(&a->archive,
1239 ARCHIVE_ERRNO_FILE_FORMAT,
1240 "Pathname cannot be converted "
1241 "from %s to current locale.",
1242 archive_string_conversion_charset_name(
1243 iso9660->sconv_utf16be));
1245 rd_r = ARCHIVE_WARN;
1248 archive_string_empty(&iso9660->pathname);
1249 archive_entry_set_pathname(entry,
1250 build_pathname(&iso9660->pathname, file));
1253 iso9660->entry_bytes_remaining = file->size;
1254 /* Offset for sparse-file-aware clients. */
1255 iso9660->entry_sparse_offset = 0;
1257 if (file->offset + file->size > iso9660->volume_size) {
1258 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1259 "File is beyond end-of-media: %s",
1260 archive_entry_pathname(entry));
1261 iso9660->entry_bytes_remaining = 0;
1262 return (ARCHIVE_WARN);
1265 /* Set up the entry structure with information about this entry. */
1266 archive_entry_set_mode(entry, file->mode);
1267 archive_entry_set_uid(entry, file->uid);
1268 archive_entry_set_gid(entry, file->gid);
1269 archive_entry_set_nlink(entry, file->nlinks);
1270 if (file->birthtime_is_set)
1271 archive_entry_set_birthtime(entry, file->birthtime, 0);
1273 archive_entry_unset_birthtime(entry);
1274 archive_entry_set_mtime(entry, file->mtime, 0);
1275 archive_entry_set_ctime(entry, file->ctime, 0);
1276 archive_entry_set_atime(entry, file->atime, 0);
1277 /* N.B.: Rock Ridge supports 64-bit device numbers. */
1278 archive_entry_set_rdev(entry, (dev_t)file->rdev);
1279 archive_entry_set_size(entry, iso9660->entry_bytes_remaining);
1280 if (file->symlink.s != NULL)
1281 archive_entry_copy_symlink(entry, file->symlink.s);
1283 /* Note: If the input isn't seekable, we can't rewind to
1284 * return the same body again, so if the next entry refers to
1285 * the same data, we have to return it as a hardlink to the
1286 * original entry. */
1287 if (file->number != -1 &&
1288 file->number == iso9660->previous_number) {
1289 if (iso9660->seenJoliet) {
1290 r = archive_entry_copy_hardlink_l(entry,
1291 (const char *)iso9660->utf16be_previous_path,
1292 iso9660->utf16be_previous_path_len,
1293 iso9660->sconv_utf16be);
1295 if (errno == ENOMEM) {
1296 archive_set_error(&a->archive, ENOMEM,
1297 "No memory for Linkname");
1298 return (ARCHIVE_FATAL);
1300 archive_set_error(&a->archive,
1301 ARCHIVE_ERRNO_FILE_FORMAT,
1302 "Linkname cannot be converted "
1303 "from %s to current locale.",
1304 archive_string_conversion_charset_name(
1305 iso9660->sconv_utf16be));
1306 rd_r = ARCHIVE_WARN;
1309 archive_entry_set_hardlink(entry,
1310 iso9660->previous_pathname.s);
1311 archive_entry_unset_size(entry);
1312 iso9660->entry_bytes_remaining = 0;
1316 if ((file->mode & AE_IFMT) != AE_IFDIR &&
1317 file->offset < iso9660->current_position) {
1320 r64 = __archive_read_seek(a, file->offset, SEEK_SET);
1321 if (r64 != (int64_t)file->offset) {
1322 /* We can't seek backwards to extract it, so issue
1323 * a warning. Note that this can only happen if
1324 * this entry was added to the heap after we passed
1325 * this offset, that is, only if the directory
1326 * mentioning this entry is later than the body of
1327 * the entry. Such layouts are very unusual; most
1328 * ISO9660 writers lay out and record all directory
1329 * information first, then store all file bodies. */
1330 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1331 "Ignoring out-of-order file @%jx (%s) %jd < %jd",
1332 (intmax_t)file->number,
1333 iso9660->pathname.s,
1334 (intmax_t)file->offset,
1335 (intmax_t)iso9660->current_position);
1336 iso9660->entry_bytes_remaining = 0;
1337 return (ARCHIVE_WARN);
1339 iso9660->current_position = (uint64_t)r64;
1342 /* Initialize zisofs variables. */
1343 iso9660->entry_zisofs.pz = file->pz;
1346 struct zisofs *zisofs;
1348 zisofs = &iso9660->entry_zisofs;
1349 zisofs->initialized = 0;
1350 zisofs->pz_log2_bs = file->pz_log2_bs;
1351 zisofs->pz_uncompressed_size = file->pz_uncompressed_size;
1352 zisofs->pz_offset = 0;
1353 zisofs->header_avail = 0;
1354 zisofs->header_passed = 0;
1355 zisofs->block_pointers_avail = 0;
1357 archive_entry_set_size(entry, file->pz_uncompressed_size);
1360 iso9660->previous_number = file->number;
1361 if (iso9660->seenJoliet) {
1362 memcpy(iso9660->utf16be_previous_path, iso9660->utf16be_path,
1363 iso9660->utf16be_path_len);
1364 iso9660->utf16be_previous_path_len = iso9660->utf16be_path_len;
1367 &iso9660->previous_pathname, iso9660->pathname.s);
1369 /* Reset entry_bytes_remaining if the file is multi extent. */
1370 iso9660->entry_content = file->contents.first;
1371 if (iso9660->entry_content != NULL)
1372 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1374 if (archive_entry_filetype(entry) == AE_IFDIR) {
1375 /* Overwrite nlinks by proper link number which is
1376 * calculated from number of sub directories. */
1377 archive_entry_set_nlink(entry, 2 + file->subdirs);
1378 /* Directory data has been read completely. */
1379 iso9660->entry_bytes_remaining = 0;
1382 if (rd_r != ARCHIVE_OK)
1384 return (ARCHIVE_OK);
1388 archive_read_format_iso9660_read_data_skip(struct archive_read *a)
1390 /* Because read_next_header always does an explicit skip
1391 * to the next entry, we don't need to do anything here. */
1392 (void)a; /* UNUSED */
1393 return (ARCHIVE_OK);
1399 zisofs_read_data(struct archive_read *a,
1400 const void **buff, size_t *size, int64_t *offset)
1402 struct iso9660 *iso9660;
1403 struct zisofs *zisofs;
1404 const unsigned char *p;
1407 size_t uncompressed_size;
1410 iso9660 = (struct iso9660 *)(a->format->data);
1411 zisofs = &iso9660->entry_zisofs;
1413 p = __archive_read_ahead(a, 1, &bytes_read);
1414 if (bytes_read <= 0) {
1415 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1416 "Truncated zisofs file body");
1417 return (ARCHIVE_FATAL);
1419 if (bytes_read > iso9660->entry_bytes_remaining)
1420 bytes_read = (ssize_t)iso9660->entry_bytes_remaining;
1422 uncompressed_size = 0;
1424 if (!zisofs->initialized) {
1427 /* Allocate block pointers buffer. */
1428 ceil = (size_t)((zisofs->pz_uncompressed_size +
1429 (((int64_t)1) << zisofs->pz_log2_bs) - 1)
1430 >> zisofs->pz_log2_bs);
1431 xsize = (ceil + 1) * 4;
1432 if (zisofs->block_pointers_alloc < xsize) {
1435 if (zisofs->block_pointers != NULL)
1436 free(zisofs->block_pointers);
1437 alloc = ((xsize >> 10) + 1) << 10;
1438 zisofs->block_pointers = malloc(alloc);
1439 if (zisofs->block_pointers == NULL) {
1440 archive_set_error(&a->archive, ENOMEM,
1441 "No memory for zisofs decompression");
1442 return (ARCHIVE_FATAL);
1444 zisofs->block_pointers_alloc = alloc;
1446 zisofs->block_pointers_size = xsize;
1448 /* Allocate uncompressed data buffer. */
1449 xsize = (size_t)1UL << zisofs->pz_log2_bs;
1450 if (zisofs->uncompressed_buffer_size < xsize) {
1451 if (zisofs->uncompressed_buffer != NULL)
1452 free(zisofs->uncompressed_buffer);
1453 zisofs->uncompressed_buffer = malloc(xsize);
1454 if (zisofs->uncompressed_buffer == NULL) {
1455 archive_set_error(&a->archive, ENOMEM,
1456 "No memory for zisofs decompression");
1457 return (ARCHIVE_FATAL);
1460 zisofs->uncompressed_buffer_size = xsize;
1463 * Read the file header, and check the magic code of zisofs.
1465 if (zisofs->header_avail < sizeof(zisofs->header)) {
1466 xsize = sizeof(zisofs->header) - zisofs->header_avail;
1469 memcpy(zisofs->header + zisofs->header_avail, p, xsize);
1470 zisofs->header_avail += xsize;
1474 if (!zisofs->header_passed &&
1475 zisofs->header_avail == sizeof(zisofs->header)) {
1478 if (memcmp(zisofs->header, zisofs_magic,
1479 sizeof(zisofs_magic)) != 0)
1481 if (archive_le32dec(zisofs->header + 8)
1482 != zisofs->pz_uncompressed_size)
1484 if (zisofs->header[12] != 4)
1486 if (zisofs->header[13] != zisofs->pz_log2_bs)
1489 archive_set_error(&a->archive,
1490 ARCHIVE_ERRNO_FILE_FORMAT,
1491 "Illegal zisofs file body");
1492 return (ARCHIVE_FATAL);
1494 zisofs->header_passed = 1;
1497 * Read block pointers.
1499 if (zisofs->header_passed &&
1500 zisofs->block_pointers_avail < zisofs->block_pointers_size) {
1501 xsize = zisofs->block_pointers_size
1502 - zisofs->block_pointers_avail;
1505 memcpy(zisofs->block_pointers
1506 + zisofs->block_pointers_avail, p, xsize);
1507 zisofs->block_pointers_avail += xsize;
1510 if (zisofs->block_pointers_avail
1511 == zisofs->block_pointers_size) {
1512 /* We've got all block pointers and initialize
1513 * related variables. */
1514 zisofs->block_off = 0;
1515 zisofs->block_avail = 0;
1516 /* Complete a initialization */
1517 zisofs->initialized = 1;
1521 if (!zisofs->initialized)
1522 goto next_data; /* We need more data. */
1526 * Get block offsets from block pointers.
1528 if (zisofs->block_avail == 0) {
1531 if (zisofs->block_off + 4 >= zisofs->block_pointers_size) {
1532 /* There isn't a pair of offsets. */
1533 archive_set_error(&a->archive,
1534 ARCHIVE_ERRNO_FILE_FORMAT,
1535 "Illegal zisofs block pointers");
1536 return (ARCHIVE_FATAL);
1538 bst = archive_le32dec(
1539 zisofs->block_pointers + zisofs->block_off);
1540 if (bst != zisofs->pz_offset + (bytes_read - avail)) {
1541 /* TODO: Should we seek offset of current file
1543 archive_set_error(&a->archive,
1544 ARCHIVE_ERRNO_FILE_FORMAT,
1545 "Illegal zisofs block pointers(cannot seek)");
1546 return (ARCHIVE_FATAL);
1548 bed = archive_le32dec(
1549 zisofs->block_pointers + zisofs->block_off + 4);
1551 archive_set_error(&a->archive,
1552 ARCHIVE_ERRNO_FILE_FORMAT,
1553 "Illegal zisofs block pointers");
1554 return (ARCHIVE_FATAL);
1556 zisofs->block_avail = bed - bst;
1557 zisofs->block_off += 4;
1559 /* Initialize compression library for new block. */
1560 if (zisofs->stream_valid)
1561 r = inflateReset(&zisofs->stream);
1563 r = inflateInit(&zisofs->stream);
1565 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1566 "Can't initialize zisofs decompression.");
1567 return (ARCHIVE_FATAL);
1569 zisofs->stream_valid = 1;
1570 zisofs->stream.total_in = 0;
1571 zisofs->stream.total_out = 0;
1575 * Make uncompressed data.
1577 if (zisofs->block_avail == 0) {
1578 memset(zisofs->uncompressed_buffer, 0,
1579 zisofs->uncompressed_buffer_size);
1580 uncompressed_size = zisofs->uncompressed_buffer_size;
1582 zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p;
1583 if (avail > zisofs->block_avail)
1584 zisofs->stream.avail_in = zisofs->block_avail;
1586 zisofs->stream.avail_in = (uInt)avail;
1587 zisofs->stream.next_out = zisofs->uncompressed_buffer;
1588 zisofs->stream.avail_out =
1589 (uInt)zisofs->uncompressed_buffer_size;
1591 r = inflate(&zisofs->stream, 0);
1593 case Z_OK: /* Decompressor made some progress.*/
1594 case Z_STREAM_END: /* Found end of stream. */
1597 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1598 "zisofs decompression failed (%d)", r);
1599 return (ARCHIVE_FATAL);
1602 zisofs->uncompressed_buffer_size - zisofs->stream.avail_out;
1603 avail -= zisofs->stream.next_in - p;
1604 zisofs->block_avail -= (uint32_t)(zisofs->stream.next_in - p);
1607 bytes_read -= avail;
1608 *buff = zisofs->uncompressed_buffer;
1609 *size = uncompressed_size;
1610 *offset = iso9660->entry_sparse_offset;
1611 iso9660->entry_sparse_offset += uncompressed_size;
1612 iso9660->entry_bytes_remaining -= bytes_read;
1613 iso9660->current_position += bytes_read;
1614 zisofs->pz_offset += (uint32_t)bytes_read;
1615 iso9660->entry_bytes_unconsumed += bytes_read;
1617 return (ARCHIVE_OK);
1620 #else /* HAVE_ZLIB_H */
1623 zisofs_read_data(struct archive_read *a,
1624 const void **buff, size_t *size, int64_t *offset)
1627 (void)buff;/* UNUSED */
1628 (void)size;/* UNUSED */
1629 (void)offset;/* UNUSED */
1630 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1631 "zisofs is not supported on this platform.");
1632 return (ARCHIVE_FAILED);
1635 #endif /* HAVE_ZLIB_H */
1638 archive_read_format_iso9660_read_data(struct archive_read *a,
1639 const void **buff, size_t *size, int64_t *offset)
1642 struct iso9660 *iso9660;
1644 iso9660 = (struct iso9660 *)(a->format->data);
1646 if (iso9660->entry_bytes_unconsumed) {
1647 __archive_read_consume(a, iso9660->entry_bytes_unconsumed);
1648 iso9660->entry_bytes_unconsumed = 0;
1651 if (iso9660->entry_bytes_remaining <= 0) {
1652 if (iso9660->entry_content != NULL)
1653 iso9660->entry_content = iso9660->entry_content->next;
1654 if (iso9660->entry_content == NULL) {
1657 *offset = iso9660->entry_sparse_offset;
1658 return (ARCHIVE_EOF);
1660 /* Seek forward to the start of the entry. */
1661 if (iso9660->current_position < iso9660->entry_content->offset) {
1664 step = iso9660->entry_content->offset -
1665 iso9660->current_position;
1666 step = __archive_read_consume(a, step);
1669 iso9660->current_position =
1670 iso9660->entry_content->offset;
1672 if (iso9660->entry_content->offset < iso9660->current_position) {
1673 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1674 "Ignoring out-of-order file (%s) %jd < %jd",
1675 iso9660->pathname.s,
1676 (intmax_t)iso9660->entry_content->offset,
1677 (intmax_t)iso9660->current_position);
1680 *offset = iso9660->entry_sparse_offset;
1681 return (ARCHIVE_WARN);
1683 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1685 if (iso9660->entry_zisofs.pz)
1686 return (zisofs_read_data(a, buff, size, offset));
1688 *buff = __archive_read_ahead(a, 1, &bytes_read);
1689 if (bytes_read == 0)
1690 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1691 "Truncated input file");
1693 return (ARCHIVE_FATAL);
1694 if (bytes_read > iso9660->entry_bytes_remaining)
1695 bytes_read = (ssize_t)iso9660->entry_bytes_remaining;
1697 *offset = iso9660->entry_sparse_offset;
1698 iso9660->entry_sparse_offset += bytes_read;
1699 iso9660->entry_bytes_remaining -= bytes_read;
1700 iso9660->entry_bytes_unconsumed = bytes_read;
1701 iso9660->current_position += bytes_read;
1702 return (ARCHIVE_OK);
1706 archive_read_format_iso9660_cleanup(struct archive_read *a)
1708 struct iso9660 *iso9660;
1711 iso9660 = (struct iso9660 *)(a->format->data);
1712 release_files(iso9660);
1713 free(iso9660->read_ce_req.reqs);
1714 archive_string_free(&iso9660->pathname);
1715 archive_string_free(&iso9660->previous_pathname);
1716 if (iso9660->pending_files.files)
1717 free(iso9660->pending_files.files);
1719 free(iso9660->entry_zisofs.uncompressed_buffer);
1720 free(iso9660->entry_zisofs.block_pointers);
1721 if (iso9660->entry_zisofs.stream_valid) {
1722 if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) {
1723 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1724 "Failed to clean up zlib decompressor");
1729 free(iso9660->utf16be_path);
1730 free(iso9660->utf16be_previous_path);
1732 (a->format->data) = NULL;
1737 * This routine parses a single ISO directory record, makes sense
1738 * of any extensions, and stores the result in memory.
1740 static struct file_info *
1741 parse_file_info(struct archive_read *a, struct file_info *parent,
1742 const unsigned char *isodirrec)
1744 struct iso9660 *iso9660;
1745 struct file_info *file;
1747 const unsigned char *rr_start, *rr_end;
1748 const unsigned char *p;
1754 iso9660 = (struct iso9660 *)(a->format->data);
1756 dr_len = (size_t)isodirrec[DR_length_offset];
1757 name_len = (size_t)isodirrec[DR_name_len_offset];
1758 location = archive_le32dec(isodirrec + DR_extent_offset);
1759 fsize = toi(isodirrec + DR_size_offset, DR_size_size);
1760 /* Sanity check that dr_len needs at least 34. */
1762 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1763 "Invalid length of directory record");
1766 /* Sanity check that name_len doesn't exceed dr_len. */
1767 if (dr_len - 33 < name_len || name_len == 0) {
1768 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1769 "Invalid length of file identifier");
1772 /* Sanity check that location doesn't exceed volume block.
1773 * Don't check lower limit of location; it's possibility
1774 * the location has negative value when file type is symbolic
1775 * link or file size is zero. As far as I know latest mkisofs
1779 (location + ((fsize + iso9660->logical_block_size -1)
1780 / iso9660->logical_block_size))
1781 > (uint32_t)iso9660->volume_block) {
1782 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1783 "Invalid location of extent of file");
1786 /* Sanity check that location doesn't have a negative value
1787 * when the file is not empty. it's too large. */
1788 if (fsize != 0 && location < 0) {
1789 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1790 "Invalid location of extent of file");
1794 /* Create a new file entry and copy data from the ISO dir record. */
1795 file = (struct file_info *)calloc(1, sizeof(*file));
1797 archive_set_error(&a->archive, ENOMEM,
1798 "No memory for file entry");
1801 file->parent = parent;
1802 file->offset = iso9660->logical_block_size * (uint64_t)location;
1804 file->mtime = isodate7(isodirrec + DR_date_offset);
1805 file->ctime = file->atime = file->mtime;
1806 file->rede_files.first = NULL;
1807 file->rede_files.last = &(file->rede_files.first);
1809 p = isodirrec + DR_name_offset;
1810 /* Rockridge extensions (if any) follow name. Compute this
1811 * before fidgeting the name_len below. */
1812 rr_start = p + name_len + (name_len & 1 ? 0 : 1);
1813 rr_end = isodirrec + dr_len;
1815 if (iso9660->seenJoliet) {
1816 /* Joliet names are max 64 chars (128 bytes) according to spec,
1817 * but genisoimage/mkisofs allows recording longer Joliet
1818 * names which are 103 UCS2 characters(206 bytes) by their
1819 * option '-joliet-long'.
1825 /* trim trailing first version and dot from filename.
1827 * Remember we were in UTF-16BE land!
1828 * SEPARATOR 1 (.) and SEPARATOR 2 (;) are both
1829 * 16 bits big endian characters on Joliet.
1831 * TODO: sanitize filename?
1832 * Joliet allows any UCS-2 char except:
1833 * *, /, :, ;, ? and \.
1835 /* Chop off trailing ';1' from files. */
1836 if (name_len > 4 && p[name_len-4] == 0 && p[name_len-3] == ';'
1837 && p[name_len-2] == 0 && p[name_len-1] == '1')
1839 #if 0 /* XXX: this somehow manages to strip of single-character file extensions, like '.c'. */
1840 /* Chop off trailing '.' from filenames. */
1841 if (name_len > 2 && p[name_len-2] == 0 && p[name_len-1] == '.')
1844 if ((file->utf16be_name = malloc(name_len)) == NULL) {
1845 archive_set_error(&a->archive, ENOMEM,
1846 "No memory for file name");
1849 memcpy(file->utf16be_name, p, name_len);
1850 file->utf16be_bytes = name_len;
1852 /* Chop off trailing ';1' from files. */
1853 if (name_len > 2 && p[name_len - 2] == ';' &&
1854 p[name_len - 1] == '1')
1856 /* Chop off trailing '.' from filenames. */
1857 if (name_len > 1 && p[name_len - 1] == '.')
1860 archive_strncpy(&file->name, (const char *)p, name_len);
1863 flags = isodirrec[DR_flags_offset];
1865 file->mode = AE_IFDIR | 0700;
1867 file->mode = AE_IFREG | 0400;
1869 file->multi_extent = 1;
1871 file->multi_extent = 0;
1873 * Use a location for the file number, which is treated as an inode
1874 * number to find out hardlink target. If Rockridge extensions is
1875 * being used, the file number will be overwritten by FILE SERIAL
1876 * NUMBER of RRIP "PX" extension.
1877 * Note: Old mkisofs did not record that FILE SERIAL NUMBER
1879 * Note2: xorriso set 0 to the location of a symlink file.
1881 if (file->size == 0 && location >= 0) {
1882 /* If file->size is zero, its location points wrong place,
1883 * and so we should not use it for the file number.
1884 * When the location has negative value, it can be used
1885 * for the file number.
1888 /* Do not appear before any directory entries. */
1891 file->number = (int64_t)(uint32_t)location;
1893 /* Rockridge extensions overwrite information from above. */
1894 if (iso9660->opt_support_rockridge) {
1895 if (parent == NULL && rr_end - rr_start >= 7) {
1897 if (memcmp(p, "SP\x07\x01\xbe\xef", 6) == 0) {
1899 * SP extension stores the suspOffset
1900 * (Number of bytes to skip between
1901 * filename and SUSP records.)
1902 * It is mandatory by the SUSP standard
1905 * It allows SUSP to coexist with
1906 * non-SUSP uses of the System
1907 * Use Area by placing non-SUSP data
1910 * SP extension must be in the root
1911 * directory entry, disable all SUSP
1912 * processing if not found.
1914 iso9660->suspOffset = p[6];
1915 iso9660->seenSUSP = 1;
1919 if (iso9660->seenSUSP) {
1922 file->name_continues = 0;
1923 file->symlink_continues = 0;
1924 rr_start += iso9660->suspOffset;
1925 r = parse_rockridge(a, file, rr_start, rr_end);
1926 if (r != ARCHIVE_OK) {
1931 * A file size of symbolic link files in ISO images
1932 * made by makefs is not zero and its location is
1933 * the same as those of next regular file. That is
1934 * the same as hard like file and it causes unexpected
1937 if (file->size > 0 &&
1938 (file->mode & AE_IFMT) == AE_IFLNK) {
1944 /* If there isn't SUSP, disable parsing
1945 * rock ridge extensions. */
1946 iso9660->opt_support_rockridge = 0;
1949 file->nlinks = 1;/* Reset nlink. we'll calculate it later. */
1950 /* Tell file's parent how many children that parent has. */
1951 if (parent != NULL && (flags & 0x02))
1954 if (iso9660->seenRockridge) {
1955 if (parent != NULL && parent->parent == NULL &&
1956 (flags & 0x02) && iso9660->rr_moved == NULL &&
1958 (strcmp(file->name.s, "rr_moved") == 0 ||
1959 strcmp(file->name.s, ".rr_moved") == 0)) {
1960 iso9660->rr_moved = file;
1962 file->rr_moved_has_re_only = 1;
1965 } else if (file->re) {
1967 * Sanity check: file's parent is rr_moved.
1969 if (parent == NULL || parent->rr_moved == 0) {
1970 archive_set_error(&a->archive,
1972 "Invalid Rockridge RE");
1976 * Sanity check: file does not have "CL" extension.
1978 if (file->cl_offset) {
1979 archive_set_error(&a->archive,
1981 "Invalid Rockridge RE and CL");
1985 * Sanity check: The file type must be a directory.
1987 if ((flags & 0x02) == 0) {
1988 archive_set_error(&a->archive,
1990 "Invalid Rockridge RE");
1993 } else if (parent != NULL && parent->rr_moved)
1994 file->rr_moved_has_re_only = 0;
1995 else if (parent != NULL && (flags & 0x02) &&
1996 (parent->re || parent->re_descendant))
1997 file->re_descendant = 1;
1998 if (file->cl_offset) {
1999 struct file_info *r;
2001 if (parent == NULL || parent->parent == NULL) {
2002 archive_set_error(&a->archive,
2004 "Invalid Rockridge CL");
2008 * Sanity check: The file type must be a regular file.
2010 if ((flags & 0x02) != 0) {
2011 archive_set_error(&a->archive,
2013 "Invalid Rockridge CL");
2017 /* Overwrite an offset and a number of this "CL" entry
2018 * to appear before other dirs. "+1" to those is to
2019 * make sure to appear after "RE" entry which this
2020 * "CL" entry should be connected with. */
2021 file->offset = file->number = file->cl_offset + 1;
2024 * Sanity check: cl_offset does not point at its
2025 * the parents or itself.
2027 for (r = parent; r; r = r->parent) {
2028 if (r->offset == file->cl_offset) {
2029 archive_set_error(&a->archive,
2031 "Invalid Rockridge CL");
2035 if (file->cl_offset == file->offset ||
2037 archive_set_error(&a->archive,
2039 "Invalid Rockridge CL");
2046 /* DEBUGGING: Warn about attributes I don't yet fully support. */
2047 if ((flags & ~0x02) != 0) {
2048 fprintf(stderr, "\n ** Unrecognized flag: ");
2049 dump_isodirrec(stderr, isodirrec);
2050 fprintf(stderr, "\n");
2051 } else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) {
2052 fprintf(stderr, "\n ** Unrecognized sequence number: ");
2053 dump_isodirrec(stderr, isodirrec);
2054 fprintf(stderr, "\n");
2055 } else if (*(isodirrec + DR_file_unit_size_offset) != 0) {
2056 fprintf(stderr, "\n ** Unexpected file unit size: ");
2057 dump_isodirrec(stderr, isodirrec);
2058 fprintf(stderr, "\n");
2059 } else if (*(isodirrec + DR_interleave_offset) != 0) {
2060 fprintf(stderr, "\n ** Unexpected interleave: ");
2061 dump_isodirrec(stderr, isodirrec);
2062 fprintf(stderr, "\n");
2063 } else if (*(isodirrec + DR_ext_attr_length_offset) != 0) {
2064 fprintf(stderr, "\n ** Unexpected extended attribute length: ");
2065 dump_isodirrec(stderr, isodirrec);
2066 fprintf(stderr, "\n");
2069 register_file(iso9660, file);
2074 parse_rockridge(struct archive_read *a, struct file_info *file,
2075 const unsigned char *p, const unsigned char *end)
2077 struct iso9660 *iso9660;
2079 iso9660 = (struct iso9660 *)(a->format->data);
2081 while (p + 4 <= end /* Enough space for another entry. */
2082 && p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */
2083 && p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */
2084 && p[2] >= 4 /* Sanity-check length. */
2085 && p + p[2] <= end) { /* Sanity-check length. */
2086 const unsigned char *data = p + 4;
2087 int data_length = p[2] - 4;
2093 if (version == 1 && data_length == 24) {
2095 * CE extension comprises:
2096 * 8 byte sector containing extension
2097 * 8 byte offset w/in above sector
2098 * 8 byte length of continuation
2101 archive_le32dec(data);
2103 archive_le32dec(data+8);
2105 archive_le32dec(data+16);
2106 if (register_CE(a, location, file)
2108 return (ARCHIVE_FATAL);
2111 else if (p[1] == 'L') {
2112 if (version == 1 && data_length == 8) {
2113 file->cl_offset = (uint64_t)
2114 iso9660->logical_block_size *
2115 (uint64_t)archive_le32dec(data);
2116 iso9660->seenRockridge = 1;
2123 parse_rockridge_NM1(file,
2125 iso9660->seenRockridge = 1;
2131 * PD extension is padding;
2132 * contents are always ignored.
2134 * PL extension won't appear;
2135 * contents are always ignored.
2138 if (version == 1 && data_length == 16) {
2139 file->rdev = toi(data,4);
2141 file->rdev |= toi(data + 8, 4);
2142 iso9660->seenRockridge = 1;
2145 else if (p[1] == 'X') {
2147 * PX extension comprises:
2149 * 8 bytes for nlinks,
2152 * 8 bytes for inode.
2155 if (data_length >= 8)
2158 if (data_length >= 16)
2161 if (data_length >= 24)
2163 = toi(data + 16, 4);
2164 if (data_length >= 32)
2166 = toi(data + 24, 4);
2167 if (data_length >= 40)
2169 = toi(data + 32, 4);
2170 iso9660->seenRockridge = 1;
2175 if (p[1] == 'E' && version == 1) {
2177 iso9660->seenRockridge = 1;
2179 else if (p[1] == 'R' && version == 1) {
2181 * RR extension comprises:
2182 * one byte flag value
2183 * This extension is obsolete,
2184 * so contents are always ignored.
2191 parse_rockridge_SL1(file,
2193 iso9660->seenRockridge = 1;
2196 else if (p[1] == 'T'
2197 && data_length == 0 && version == 1) {
2199 * ST extension marks end of this
2200 * block of SUSP entries.
2202 * It allows SUSP to coexist with
2203 * non-SUSP uses of the System
2204 * Use Area by placing non-SUSP data
2207 iso9660->seenSUSP = 0;
2208 iso9660->seenRockridge = 0;
2209 return (ARCHIVE_OK);
2215 parse_rockridge_TF1(file,
2217 iso9660->seenRockridge = 1;
2224 parse_rockridge_ZF1(file,
2234 return (ARCHIVE_OK);
2238 register_CE(struct archive_read *a, int32_t location,
2239 struct file_info *file)
2241 struct iso9660 *iso9660;
2242 struct read_ce_queue *heap;
2243 struct read_ce_req *p;
2244 uint64_t offset, parent_offset;
2247 iso9660 = (struct iso9660 *)(a->format->data);
2248 offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size;
2249 if (((file->mode & AE_IFMT) == AE_IFREG &&
2250 offset >= file->offset) ||
2251 offset < iso9660->current_position ||
2252 (((uint64_t)file->ce_offset) + file->ce_size)
2253 > (uint64_t)iso9660->logical_block_size ||
2254 offset + file->ce_offset + file->ce_size
2255 > iso9660->volume_size) {
2256 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2257 "Invalid parameter in SUSP \"CE\" extension");
2258 return (ARCHIVE_FATAL);
2261 /* Expand our CE list as necessary. */
2262 heap = &(iso9660->read_ce_req);
2263 if (heap->cnt >= heap->allocated) {
2266 if (heap->allocated < 16)
2269 new_size = heap->allocated * 2;
2270 /* Overflow might keep us from growing the list. */
2271 if (new_size <= heap->allocated) {
2272 archive_set_error(&a->archive, ENOMEM, "Out of memory");
2273 return (ARCHIVE_FATAL);
2275 p = calloc(new_size, sizeof(p[0]));
2277 archive_set_error(&a->archive, ENOMEM, "Out of memory");
2278 return (ARCHIVE_FATAL);
2280 if (heap->reqs != NULL) {
2281 memcpy(p, heap->reqs, heap->cnt * sizeof(*p));
2285 heap->allocated = new_size;
2289 * Start with hole at end, walk it up tree to find insertion point.
2293 parent = (hole - 1)/2;
2294 parent_offset = heap->reqs[parent].offset;
2295 if (offset >= parent_offset) {
2296 heap->reqs[hole].offset = offset;
2297 heap->reqs[hole].file = file;
2298 return (ARCHIVE_OK);
2300 /* Move parent into hole <==> move hole up tree. */
2301 heap->reqs[hole] = heap->reqs[parent];
2304 heap->reqs[0].offset = offset;
2305 heap->reqs[0].file = file;
2306 return (ARCHIVE_OK);
2310 next_CE(struct read_ce_queue *heap)
2312 uint64_t a_offset, b_offset, c_offset;
2314 struct read_ce_req tmp;
2320 * Move the last item in the heap to the root of the tree
2322 heap->reqs[0] = heap->reqs[--(heap->cnt)];
2325 * Rebalance the heap.
2327 a = 0; /* Starting element and its offset */
2328 a_offset = heap->reqs[a].offset;
2330 b = a + a + 1; /* First child */
2333 b_offset = heap->reqs[b].offset;
2334 c = b + 1; /* Use second child if it is smaller. */
2335 if (c < heap->cnt) {
2336 c_offset = heap->reqs[c].offset;
2337 if (c_offset < b_offset) {
2339 b_offset = c_offset;
2342 if (a_offset <= b_offset)
2344 tmp = heap->reqs[a];
2345 heap->reqs[a] = heap->reqs[b];
2346 heap->reqs[b] = tmp;
2353 read_CE(struct archive_read *a, struct iso9660 *iso9660)
2355 struct read_ce_queue *heap;
2356 const unsigned char *b, *p, *end;
2357 struct file_info *file;
2361 /* Read data which RRIP "CE" extension points. */
2362 heap = &(iso9660->read_ce_req);
2363 step = iso9660->logical_block_size;
2365 heap->reqs[0].offset == iso9660->current_position) {
2366 b = __archive_read_ahead(a, step, NULL);
2368 archive_set_error(&a->archive,
2370 "Failed to read full block when scanning "
2371 "ISO9660 directory list");
2372 return (ARCHIVE_FATAL);
2375 file = heap->reqs[0].file;
2376 if (file->ce_offset + file->ce_size > step) {
2377 archive_set_error(&a->archive,
2378 ARCHIVE_ERRNO_FILE_FORMAT,
2379 "Malformed CE information");
2380 return (ARCHIVE_FATAL);
2382 p = b + file->ce_offset;
2383 end = p + file->ce_size;
2385 r = parse_rockridge(a, file, p, end);
2386 if (r != ARCHIVE_OK)
2387 return (ARCHIVE_FATAL);
2388 } while (heap->cnt &&
2389 heap->reqs[0].offset == iso9660->current_position);
2390 /* NOTE: Do not move this consume's code to fron of
2391 * do-while loop. Registration of nested CE extension
2392 * might cause error because of current position. */
2393 __archive_read_consume(a, step);
2394 iso9660->current_position += step;
2396 return (ARCHIVE_OK);
2400 parse_rockridge_NM1(struct file_info *file,
2401 const unsigned char *data, int data_length)
2403 if (!file->name_continues)
2404 archive_string_empty(&file->name);
2405 file->name_continues = 0;
2406 if (data_length < 1)
2409 * NM version 1 extension comprises:
2410 * 1 byte flag, value is one of:
2411 * = 0: remainder is name
2412 * = 1: remainder is name, next NM entry continues name
2415 * = 32: Implementation specific
2416 * All other values are reserved.
2420 if (data_length < 2)
2422 archive_strncat(&file->name,
2423 (const char *)data + 1, data_length - 1);
2426 if (data_length < 2)
2428 archive_strncat(&file->name,
2429 (const char *)data + 1, data_length - 1);
2430 file->name_continues = 1;
2433 archive_strcat(&file->name, ".");
2436 archive_strcat(&file->name, "..");
2445 parse_rockridge_TF1(struct file_info *file, const unsigned char *data,
2450 * TF extension comprises:
2452 * create time (optional)
2453 * modify time (optional)
2454 * access time (optional)
2455 * attribute time (optional)
2456 * Time format and presence of fields
2457 * is controlled by flag bits.
2459 if (data_length < 1)
2465 /* Use 17-byte time format. */
2466 if ((flag & 1) && data_length >= 17) {
2468 file->birthtime_is_set = 1;
2469 file->birthtime = isodate17(data);
2473 if ((flag & 2) && data_length >= 17) {
2475 file->mtime = isodate17(data);
2479 if ((flag & 4) && data_length >= 17) {
2481 file->atime = isodate17(data);
2485 if ((flag & 8) && data_length >= 17) {
2486 /* Attribute change time. */
2487 file->ctime = isodate17(data);
2490 /* Use 7-byte time format. */
2491 if ((flag & 1) && data_length >= 7) {
2493 file->birthtime_is_set = 1;
2494 file->birthtime = isodate7(data);
2498 if ((flag & 2) && data_length >= 7) {
2500 file->mtime = isodate7(data);
2504 if ((flag & 4) && data_length >= 7) {
2506 file->atime = isodate7(data);
2510 if ((flag & 8) && data_length >= 7) {
2511 /* Attribute change time. */
2512 file->ctime = isodate7(data);
2518 parse_rockridge_SL1(struct file_info *file, const unsigned char *data,
2521 const char *separator = "";
2523 if (!file->symlink_continues || file->symlink.length < 1)
2524 archive_string_empty(&file->symlink);
2525 file->symlink_continues = 0;
2528 * Defined flag values:
2529 * 0: This is the last SL record for this symbolic link
2530 * 1: this symbolic link field continues in next SL entry
2531 * All other values are reserved.
2533 if (data_length < 1)
2539 file->symlink_continues = 1;
2544 ++data; /* Skip flag byte. */
2548 * SL extension body stores "components".
2549 * Basically, this is a complicated way of storing
2550 * a POSIX path. It also interferes with using
2551 * symlinks for storing non-path data. <sigh>
2553 * Each component is 2 bytes (flag and length)
2554 * possibly followed by name data.
2556 while (data_length >= 2) {
2557 unsigned char flag = *data++;
2558 unsigned char nlen = *data++;
2561 archive_strcat(&file->symlink, separator);
2565 case 0: /* Usual case, this is text. */
2566 if (data_length < nlen)
2568 archive_strncat(&file->symlink,
2569 (const char *)data, nlen);
2571 case 0x01: /* Text continues in next component. */
2572 if (data_length < nlen)
2574 archive_strncat(&file->symlink,
2575 (const char *)data, nlen);
2578 case 0x02: /* Current dir. */
2579 archive_strcat(&file->symlink, ".");
2581 case 0x04: /* Parent dir. */
2582 archive_strcat(&file->symlink, "..");
2584 case 0x08: /* Root of filesystem. */
2585 archive_strcat(&file->symlink, "/");
2588 case 0x10: /* Undefined (historically "volume root" */
2589 archive_string_empty(&file->symlink);
2590 archive_strcat(&file->symlink, "ROOT");
2592 case 0x20: /* Undefined (historically "hostname") */
2593 archive_strcat(&file->symlink, "hostname");
2596 /* TODO: issue a warning ? */
2600 data_length -= nlen;
2605 parse_rockridge_ZF1(struct file_info *file, const unsigned char *data,
2609 if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) {
2612 file->pz_log2_bs = data[3];
2613 file->pz_uncompressed_size = archive_le32dec(&data[4]);
2618 register_file(struct iso9660 *iso9660, struct file_info *file)
2621 file->use_next = iso9660->use_files;
2622 iso9660->use_files = file;
2626 release_files(struct iso9660 *iso9660)
2628 struct content *con, *connext;
2629 struct file_info *file;
2631 file = iso9660->use_files;
2632 while (file != NULL) {
2633 struct file_info *next = file->use_next;
2635 archive_string_free(&file->name);
2636 archive_string_free(&file->symlink);
2637 free(file->utf16be_name);
2638 con = file->contents.first;
2639 while (con != NULL) {
2640 connext = con->next;
2650 next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
2651 struct file_info **pfile)
2653 struct file_info *file;
2656 r = next_cache_entry(a, iso9660, pfile);
2657 if (r != ARCHIVE_OK)
2661 /* Don't waste time seeking for zero-length bodies. */
2662 if (file->size == 0)
2663 file->offset = iso9660->current_position;
2665 /* flush any remaining bytes from the last round to ensure
2666 * we're positioned */
2667 if (iso9660->entry_bytes_unconsumed) {
2668 __archive_read_consume(a, iso9660->entry_bytes_unconsumed);
2669 iso9660->entry_bytes_unconsumed = 0;
2672 /* Seek forward to the start of the entry. */
2673 if (iso9660->current_position < file->offset) {
2676 step = file->offset - iso9660->current_position;
2677 step = __archive_read_consume(a, step);
2680 iso9660->current_position = file->offset;
2683 /* We found body of file; handle it now. */
2684 return (ARCHIVE_OK);
2688 next_cache_entry(struct archive_read *a, struct iso9660 *iso9660,
2689 struct file_info **pfile)
2691 struct file_info *file;
2693 struct file_info *first;
2694 struct file_info **last;
2699 file = cache_get_entry(iso9660);
2702 return (ARCHIVE_OK);
2706 struct file_info *re, *d;
2708 *pfile = file = next_entry(iso9660);
2711 * If directory entries all which are descendant of
2712 * rr_moved are stil remaning, expose their.
2714 if (iso9660->re_files.first != NULL &&
2715 iso9660->rr_moved != NULL &&
2716 iso9660->rr_moved->rr_moved_has_re_only)
2717 /* Expose "rr_moved" entry. */
2718 cache_add_entry(iso9660, iso9660->rr_moved);
2719 while ((re = re_get_entry(iso9660)) != NULL) {
2720 /* Expose its descendant dirs. */
2721 while ((d = rede_get_entry(re)) != NULL)
2722 cache_add_entry(iso9660, d);
2724 if (iso9660->cache_files.first != NULL)
2725 return (next_cache_entry(a, iso9660, pfile));
2726 return (ARCHIVE_EOF);
2729 if (file->cl_offset) {
2730 struct file_info *first_re = NULL;
2734 * Find "RE" dir for the current file, which
2737 while ((re = re_get_entry(iso9660))
2739 if (first_re == NULL)
2741 if (re->offset == file->cl_offset) {
2742 re->parent->subdirs--;
2743 re->parent = file->parent;
2745 if (re->parent->re_descendant) {
2747 re->re_descendant = 1;
2748 if (rede_add_entry(re) < 0)
2750 /* Move a list of descendants
2751 * to a new ancestor. */
2752 while ((d = rede_get_entry(
2754 if (rede_add_entry(d)
2759 /* Replace the current file
2762 /* Expose its descendant */
2763 while ((d = rede_get_entry(
2769 re_add_entry(iso9660, re);
2773 * Do not expose this at this time
2774 * because we have not gotten its full-path
2779 } else if ((file->mode & AE_IFMT) == AE_IFDIR) {
2782 /* Read file entries in this dir. */
2783 r = read_children(a, file);
2784 if (r != ARCHIVE_OK)
2788 * Handle a special dir of Rockridge extensions,
2791 if (file->rr_moved) {
2793 * If this has only the subdirectories which
2794 * have "RE" flags, do not expose at this time.
2796 if (file->rr_moved_has_re_only)
2798 /* Otherwise expose "rr_moved" entry. */
2799 } else if (file->re) {
2801 * Do not expose this at this time
2802 * because we have not gotten its full-path
2805 re_add_entry(iso9660, file);
2807 } else if (file->re_descendant) {
2809 * If the top level "RE" entry of this entry
2810 * is not exposed, we, accordingly, should not
2811 * expose this entry at this time because
2812 * we cannot make its proper full-path name.
2814 if (rede_add_entry(file) == 0)
2816 /* Otherwise we can expose this entry because
2817 * it seems its top level "RE" has already been
2824 if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1)
2825 return (ARCHIVE_OK);
2828 number = file->number;
2829 iso9660->cache_files.first = NULL;
2830 iso9660->cache_files.last = &(iso9660->cache_files.first);
2831 empty_files.first = NULL;
2832 empty_files.last = &empty_files.first;
2833 /* Collect files which has the same file serial number.
2834 * Peek pending_files so that file which number is different
2835 * is not put bak. */
2836 while (iso9660->pending_files.used > 0 &&
2837 (iso9660->pending_files.files[0]->number == -1 ||
2838 iso9660->pending_files.files[0]->number == number)) {
2839 if (file->number == -1) {
2840 /* This file has the same offset
2841 * but it's wrong offset which empty files
2842 * and symlink files have.
2843 * NOTE: This wrong offse was recorded by
2844 * old mkisofs utility. If ISO images is
2845 * created by latest mkisofs, this does not
2849 *empty_files.last = file;
2850 empty_files.last = &(file->next);
2853 cache_add_entry(iso9660, file);
2855 file = next_entry(iso9660);
2860 return ((file == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2862 if (file->number == -1) {
2864 *empty_files.last = file;
2865 empty_files.last = &(file->next);
2868 cache_add_entry(iso9660, file);
2872 /* The count is the same as number of hardlink,
2873 * so much so that each nlinks of files in cache_file
2874 * is overwritten by value of the count.
2876 for (file = iso9660->cache_files.first;
2877 file != NULL; file = file->next)
2878 file->nlinks = count;
2880 /* If there are empty files, that files are added
2881 * to the tail of the cache_files. */
2882 if (empty_files.first != NULL) {
2883 *iso9660->cache_files.last = empty_files.first;
2884 iso9660->cache_files.last = empty_files.last;
2886 *pfile = cache_get_entry(iso9660);
2887 return ((*pfile == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2890 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2891 "Failed to connect 'CL' pointer to 'RE' rr_moved pointer of "
2892 "Rockridge extensions: current position = %jd, CL offset = %jd",
2893 (intmax_t)iso9660->current_position, (intmax_t)file->cl_offset);
2894 return (ARCHIVE_FATAL);
2898 re_add_entry(struct iso9660 *iso9660, struct file_info *file)
2900 file->re_next = NULL;
2901 *iso9660->re_files.last = file;
2902 iso9660->re_files.last = &(file->re_next);
2905 static inline struct file_info *
2906 re_get_entry(struct iso9660 *iso9660)
2908 struct file_info *file;
2910 if ((file = iso9660->re_files.first) != NULL) {
2911 iso9660->re_files.first = file->re_next;
2912 if (iso9660->re_files.first == NULL)
2913 iso9660->re_files.last =
2914 &(iso9660->re_files.first);
2920 rede_add_entry(struct file_info *file)
2922 struct file_info *re;
2928 while (re != NULL && !re->re)
2933 file->re_next = NULL;
2934 *re->rede_files.last = file;
2935 re->rede_files.last = &(file->re_next);
2939 static inline struct file_info *
2940 rede_get_entry(struct file_info *re)
2942 struct file_info *file;
2944 if ((file = re->rede_files.first) != NULL) {
2945 re->rede_files.first = file->re_next;
2946 if (re->rede_files.first == NULL)
2947 re->rede_files.last =
2948 &(re->rede_files.first);
2954 cache_add_entry(struct iso9660 *iso9660, struct file_info *file)
2957 *iso9660->cache_files.last = file;
2958 iso9660->cache_files.last = &(file->next);
2961 static inline struct file_info *
2962 cache_get_entry(struct iso9660 *iso9660)
2964 struct file_info *file;
2966 if ((file = iso9660->cache_files.first) != NULL) {
2967 iso9660->cache_files.first = file->next;
2968 if (iso9660->cache_files.first == NULL)
2969 iso9660->cache_files.last =
2970 &(iso9660->cache_files.first);
2976 heap_add_entry(struct archive_read *a, struct heap_queue *heap,
2977 struct file_info *file, uint64_t key)
2979 uint64_t file_key, parent_key;
2982 /* Expand our pending files list as necessary. */
2983 if (heap->used >= heap->allocated) {
2984 struct file_info **new_pending_files;
2985 int new_size = heap->allocated * 2;
2987 if (heap->allocated < 1024)
2989 /* Overflow might keep us from growing the list. */
2990 if (new_size <= heap->allocated) {
2991 archive_set_error(&a->archive,
2992 ENOMEM, "Out of memory");
2993 return (ARCHIVE_FATAL);
2995 new_pending_files = (struct file_info **)
2996 malloc(new_size * sizeof(new_pending_files[0]));
2997 if (new_pending_files == NULL) {
2998 archive_set_error(&a->archive,
2999 ENOMEM, "Out of memory");
3000 return (ARCHIVE_FATAL);
3002 memcpy(new_pending_files, heap->files,
3003 heap->allocated * sizeof(new_pending_files[0]));
3004 if (heap->files != NULL)
3006 heap->files = new_pending_files;
3007 heap->allocated = new_size;
3010 file_key = file->key = key;
3013 * Start with hole at end, walk it up tree to find insertion point.
3015 hole = heap->used++;
3017 parent = (hole - 1)/2;
3018 parent_key = heap->files[parent]->key;
3019 if (file_key >= parent_key) {
3020 heap->files[hole] = file;
3021 return (ARCHIVE_OK);
3023 /* Move parent into hole <==> move hole up tree. */
3024 heap->files[hole] = heap->files[parent];
3027 heap->files[0] = file;
3029 return (ARCHIVE_OK);
3032 static struct file_info *
3033 heap_get_entry(struct heap_queue *heap)
3035 uint64_t a_key, b_key, c_key;
3037 struct file_info *r, *tmp;
3043 * The first file in the list is the earliest; we'll return this.
3048 * Move the last item in the heap to the root of the tree
3050 heap->files[0] = heap->files[--(heap->used)];
3053 * Rebalance the heap.
3055 a = 0; /* Starting element and its heap key */
3056 a_key = heap->files[a]->key;
3058 b = a + a + 1; /* First child */
3059 if (b >= heap->used)
3061 b_key = heap->files[b]->key;
3062 c = b + 1; /* Use second child if it is smaller. */
3063 if (c < heap->used) {
3064 c_key = heap->files[c]->key;
3065 if (c_key < b_key) {
3072 tmp = heap->files[a];
3073 heap->files[a] = heap->files[b];
3074 heap->files[b] = tmp;
3080 toi(const void *p, int n)
3082 const unsigned char *v = (const unsigned char *)p;
3084 return v[0] + 256 * toi(v + 1, n - 1);
3091 isodate7(const unsigned char *v)
3097 memset(&tm, 0, sizeof(tm));
3099 tm.tm_mon = v[1] - 1;
3104 /* v[6] is the signed timezone offset, in 1/4-hour increments. */
3105 offset = ((const signed char *)v)[6];
3106 if (offset > -48 && offset < 52) {
3107 tm.tm_hour -= offset / 4;
3108 tm.tm_min -= (offset % 4) * 15;
3110 t = time_from_tm(&tm);
3111 if (t == (time_t)-1)
3117 isodate17(const unsigned char *v)
3123 memset(&tm, 0, sizeof(tm));
3124 tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100
3125 + (v[2] - '0') * 10 + (v[3] - '0')
3127 tm.tm_mon = (v[4] - '0') * 10 + (v[5] - '0');
3128 tm.tm_mday = (v[6] - '0') * 10 + (v[7] - '0');
3129 tm.tm_hour = (v[8] - '0') * 10 + (v[9] - '0');
3130 tm.tm_min = (v[10] - '0') * 10 + (v[11] - '0');
3131 tm.tm_sec = (v[12] - '0') * 10 + (v[13] - '0');
3132 /* v[16] is the signed timezone offset, in 1/4-hour increments. */
3133 offset = ((const signed char *)v)[16];
3134 if (offset > -48 && offset < 52) {
3135 tm.tm_hour -= offset / 4;
3136 tm.tm_min -= (offset % 4) * 15;
3138 t = time_from_tm(&tm);
3139 if (t == (time_t)-1)
3145 time_from_tm(struct tm *t)
3148 /* Use platform timegm() if available. */
3150 #elif HAVE__MKGMTIME64
3151 return (_mkgmtime64(t));
3153 /* Else use direct calculation using POSIX assumptions. */
3154 /* First, fix up tm_yday based on the year/month/day. */
3155 if (mktime(t) == (time_t)-1)
3156 return ((time_t)-1);
3157 /* Then we can compute timegm() from first principles. */
3158 return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
3159 + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000
3160 + ((t->tm_year - 69) / 4) * 86400 -
3161 ((t->tm_year - 1) / 100) * 86400
3162 + ((t->tm_year + 299) / 400) * 86400);
3167 build_pathname(struct archive_string *as, struct file_info *file)
3169 if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) {
3170 build_pathname(as, file->parent);
3171 archive_strcat(as, "/");
3173 if (archive_strlen(&file->name) == 0)
3174 archive_strcat(as, ".");
3176 archive_string_concat(as, &file->name);
3181 build_pathname_utf16be(unsigned char *p, size_t max, size_t *len,
3182 struct file_info *file)
3184 if (file->parent != NULL && file->parent->utf16be_bytes > 0) {
3185 if (build_pathname_utf16be(p, max, len, file->parent) != 0)
3191 if (file->utf16be_bytes == 0) {
3193 return (-1);/* Path is too long! */
3198 if (*len + file->utf16be_bytes > max)
3199 return (-1);/* Path is too long! */
3200 memcpy(p + *len, file->utf16be_name, file->utf16be_bytes);
3201 *len += file->utf16be_bytes;
3208 dump_isodirrec(FILE *out, const unsigned char *isodirrec)
3210 fprintf(out, " l %d,",
3211 toi(isodirrec + DR_length_offset, DR_length_size));
3212 fprintf(out, " a %d,",
3213 toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size));
3214 fprintf(out, " ext 0x%x,",
3215 toi(isodirrec + DR_extent_offset, DR_extent_size));
3216 fprintf(out, " s %d,",
3217 toi(isodirrec + DR_size_offset, DR_extent_size));
3218 fprintf(out, " f 0x%x,",
3219 toi(isodirrec + DR_flags_offset, DR_flags_size));
3220 fprintf(out, " u %d,",
3221 toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size));
3222 fprintf(out, " ilv %d,",
3223 toi(isodirrec + DR_interleave_offset, DR_interleave_size));
3224 fprintf(out, " seq %d,",
3225 toi(isodirrec + DR_volume_sequence_number_offset,
3226 DR_volume_sequence_number_size));
3227 fprintf(out, " nl %d:",
3228 toi(isodirrec + DR_name_len_offset, DR_name_len_size));
3229 fprintf(out, " `%.*s'",
3230 toi(isodirrec + DR_name_len_offset, DR_name_len_size),
3231 isodirrec + DR_name_offset);