2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se>
4 * Copyright (c) 2009-2011 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;
379 static int archive_read_format_iso9660_bid(struct archive_read *, int);
380 static int archive_read_format_iso9660_options(struct archive_read *,
381 const char *, const char *);
382 static int archive_read_format_iso9660_cleanup(struct archive_read *);
383 static int archive_read_format_iso9660_read_data(struct archive_read *,
384 const void **, size_t *, int64_t *);
385 static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
386 static int archive_read_format_iso9660_read_header(struct archive_read *,
387 struct archive_entry *);
388 static const char *build_pathname(struct archive_string *, struct file_info *);
389 static int build_pathname_utf16be(unsigned char *, size_t, size_t *,
392 static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
394 static time_t time_from_tm(struct tm *);
395 static time_t isodate17(const unsigned char *);
396 static time_t isodate7(const unsigned char *);
397 static int isBootRecord(struct iso9660 *, const unsigned char *);
398 static int isVolumePartition(struct iso9660 *, const unsigned char *);
399 static int isVDSetTerminator(struct iso9660 *, const unsigned char *);
400 static int isJolietSVD(struct iso9660 *, const unsigned char *);
401 static int isSVD(struct iso9660 *, const unsigned char *);
402 static int isEVD(struct iso9660 *, const unsigned char *);
403 static int isPVD(struct iso9660 *, const unsigned char *);
404 static int next_cache_entry(struct archive_read *, struct iso9660 *,
405 struct file_info **);
406 static int next_entry_seek(struct archive_read *, struct iso9660 *,
407 struct file_info **);
408 static struct file_info *
409 parse_file_info(struct archive_read *a,
410 struct file_info *parent, const unsigned char *isodirrec);
411 static int parse_rockridge(struct archive_read *a,
412 struct file_info *file, const unsigned char *start,
413 const unsigned char *end);
414 static int register_CE(struct archive_read *a, int32_t location,
415 struct file_info *file);
416 static int read_CE(struct archive_read *a, struct iso9660 *iso9660);
417 static void parse_rockridge_NM1(struct file_info *,
418 const unsigned char *, int);
419 static void parse_rockridge_SL1(struct file_info *,
420 const unsigned char *, int);
421 static void parse_rockridge_TF1(struct file_info *,
422 const unsigned char *, int);
423 static void parse_rockridge_ZF1(struct file_info *,
424 const unsigned char *, int);
425 static void register_file(struct iso9660 *, struct file_info *);
426 static void release_files(struct iso9660 *);
427 static unsigned toi(const void *p, int n);
428 static inline void re_add_entry(struct iso9660 *, struct file_info *);
429 static inline struct file_info * re_get_entry(struct iso9660 *);
430 static inline int rede_add_entry(struct file_info *);
431 static inline struct file_info * rede_get_entry(struct file_info *);
432 static inline void cache_add_entry(struct iso9660 *iso9660,
433 struct file_info *file);
434 static inline struct file_info *cache_get_entry(struct iso9660 *iso9660);
435 static int heap_add_entry(struct archive_read *a, struct heap_queue *heap,
436 struct file_info *file, uint64_t key);
437 static struct file_info *heap_get_entry(struct heap_queue *heap);
439 #define add_entry(arch, iso9660, file) \
440 heap_add_entry(arch, &((iso9660)->pending_files), file, file->offset)
441 #define next_entry(iso9660) \
442 heap_get_entry(&((iso9660)->pending_files))
445 archive_read_support_format_iso9660(struct archive *_a)
447 struct archive_read *a = (struct archive_read *)_a;
448 struct iso9660 *iso9660;
451 archive_check_magic(_a, ARCHIVE_READ_MAGIC,
452 ARCHIVE_STATE_NEW, "archive_read_support_format_iso9660");
454 iso9660 = (struct iso9660 *)calloc(1, sizeof(*iso9660));
455 if (iso9660 == NULL) {
456 archive_set_error(&a->archive, ENOMEM,
457 "Can't allocate iso9660 data");
458 return (ARCHIVE_FATAL);
460 iso9660->magic = ISO9660_MAGIC;
461 iso9660->cache_files.first = NULL;
462 iso9660->cache_files.last = &(iso9660->cache_files.first);
463 iso9660->re_files.first = NULL;
464 iso9660->re_files.last = &(iso9660->re_files.first);
465 /* Enable to support Joliet extensions by default. */
466 iso9660->opt_support_joliet = 1;
467 /* Enable to support Rock Ridge extensions by default. */
468 iso9660->opt_support_rockridge = 1;
470 r = __archive_read_register_format(a,
473 archive_read_format_iso9660_bid,
474 archive_read_format_iso9660_options,
475 archive_read_format_iso9660_read_header,
476 archive_read_format_iso9660_read_data,
477 archive_read_format_iso9660_read_data_skip,
478 archive_read_format_iso9660_cleanup);
480 if (r != ARCHIVE_OK) {
489 archive_read_format_iso9660_bid(struct archive_read *a, int best_bid)
491 struct iso9660 *iso9660;
493 const unsigned char *p;
496 /* If there's already a better bid than we can ever
497 make, don't bother testing. */
501 iso9660 = (struct iso9660 *)(a->format->data);
504 * Skip the first 32k (reserved area) and get the first
505 * 8 sectors of the volume descriptor table. Of course,
506 * if the I/O layer gives us more, we'll take it.
508 #define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE)
509 p = __archive_read_ahead(a,
510 RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE,
515 /* Skip the reserved area. */
516 bytes_read -= RESERVED_AREA;
519 /* Check each volume descriptor. */
521 for (; bytes_read > LOGICAL_BLOCK_SIZE;
522 bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) {
523 /* Do not handle undefined Volume Descriptor Type. */
524 if (p[0] >= 4 && p[0] <= 254)
526 /* Standard Identifier must be "CD001" */
527 if (memcmp(p + 1, "CD001", 5) != 0)
529 if (isPVD(iso9660, p))
531 if (!iso9660->joliet.location) {
532 if (isJolietSVD(iso9660, p))
535 if (isBootRecord(iso9660, p))
537 if (isEVD(iso9660, p))
539 if (isSVD(iso9660, p))
541 if (isVolumePartition(iso9660, p))
543 if (isVDSetTerminator(iso9660, p)) {
550 * ISO 9660 format must have Primary Volume Descriptor and
551 * Volume Descriptor Set Terminator.
553 if (seenTerminator && iso9660->primary.location > 16)
556 /* We didn't find a valid PVD; return a bid of zero. */
561 archive_read_format_iso9660_options(struct archive_read *a,
562 const char *key, const char *val)
564 struct iso9660 *iso9660;
566 iso9660 = (struct iso9660 *)(a->format->data);
568 if (strcmp(key, "joliet") == 0) {
569 if (val == NULL || strcmp(val, "off") == 0 ||
570 strcmp(val, "ignore") == 0 ||
571 strcmp(val, "disable") == 0 ||
572 strcmp(val, "0") == 0)
573 iso9660->opt_support_joliet = 0;
575 iso9660->opt_support_joliet = 1;
578 if (strcmp(key, "rockridge") == 0 ||
579 strcmp(key, "Rockridge") == 0) {
580 iso9660->opt_support_rockridge = val != NULL;
584 /* Note: The "warn" return is just to inform the options
585 * supervisor that we didn't handle it. It will generate
586 * a suitable error if no one used this option. */
587 return (ARCHIVE_WARN);
591 isBootRecord(struct iso9660 *iso9660, const unsigned char *h)
593 (void)iso9660; /* UNUSED */
595 /* Type of the Volume Descriptor Boot Record must be 0. */
599 /* Volume Descriptor Version must be 1. */
607 isVolumePartition(struct iso9660 *iso9660, const unsigned char *h)
611 /* Type of the Volume Partition Descriptor must be 3. */
615 /* Volume Descriptor Version must be 1. */
622 location = archive_le32dec(h + 72);
623 if (location <= SYSTEM_AREA_BLOCK ||
624 location >= iso9660->volume_block)
626 if ((uint32_t)location != archive_be32dec(h + 76))
633 isVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h)
637 (void)iso9660; /* UNUSED */
639 /* Type of the Volume Descriptor Set Terminator must be 255. */
643 /* Volume Descriptor Version must be 1. */
647 /* Reserved field must be 0. */
648 for (i = 7; i < 2048; ++i)
656 isJolietSVD(struct iso9660 *iso9660, const unsigned char *h)
658 const unsigned char *p;
659 ssize_t logical_block_size;
660 int32_t volume_block;
662 /* Check if current sector is a kind of Supplementary Volume
664 if (!isSVD(iso9660, h))
667 /* FIXME: do more validations according to joliet spec. */
669 /* check if this SVD contains joliet extension! */
670 p = h + SVD_escape_sequences_offset;
671 /* N.B. Joliet spec says p[1] == '\\', but.... */
672 if (p[0] == '%' && p[1] == '/') {
677 else if (p[2] == 'C')
679 else if (p[2] == 'E')
681 else /* not joliet */
684 iso9660->seenJoliet = level;
686 } else /* not joliet */
690 archive_le16dec(h + SVD_logical_block_size_offset);
691 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
693 iso9660->logical_block_size = logical_block_size;
694 iso9660->volume_block = volume_block;
695 iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
696 /* Read Root Directory Record in Volume Descriptor. */
697 p = h + SVD_root_directory_record_offset;
698 iso9660->joliet.location = archive_le32dec(p + DR_extent_offset);
699 iso9660->joliet.size = archive_le32dec(p + DR_size_offset);
705 isSVD(struct iso9660 *iso9660, const unsigned char *h)
707 const unsigned char *p;
708 ssize_t logical_block_size;
709 int32_t volume_block;
713 (void)iso9660; /* UNUSED */
715 /* Type 2 means it's a SVD. */
716 if (h[SVD_type_offset] != 2)
719 /* Reserved field must be 0. */
720 for (i = 0; i < SVD_reserved1_size; ++i)
721 if (h[SVD_reserved1_offset + i] != 0)
723 for (i = 0; i < SVD_reserved2_size; ++i)
724 if (h[SVD_reserved2_offset + i] != 0)
726 for (i = 0; i < SVD_reserved3_size; ++i)
727 if (h[SVD_reserved3_offset + i] != 0)
730 /* File structure version must be 1 for ISO9660/ECMA119. */
731 if (h[SVD_file_structure_version_offset] != 1)
735 archive_le16dec(h + SVD_logical_block_size_offset);
736 if (logical_block_size <= 0)
739 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
740 if (volume_block <= SYSTEM_AREA_BLOCK+4)
743 /* Location of Occurrence of Type L Path Table must be
744 * available location,
745 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
746 location = archive_le32dec(h+SVD_type_L_path_table_offset);
747 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
750 /* The Type M Path Table must be at a valid location (WinISO
751 * and probably other programs omit this, so we allow zero)
753 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
754 location = archive_be32dec(h+SVD_type_M_path_table_offset);
755 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
756 || location >= volume_block)
759 /* Read Root Directory Record in Volume Descriptor. */
760 p = h + SVD_root_directory_record_offset;
761 if (p[DR_length_offset] != 34)
768 isEVD(struct iso9660 *iso9660, const unsigned char *h)
770 const unsigned char *p;
771 ssize_t logical_block_size;
772 int32_t volume_block;
776 (void)iso9660; /* UNUSED */
778 /* Type of the Enhanced Volume Descriptor must be 2. */
779 if (h[PVD_type_offset] != 2)
782 /* EVD version must be 2. */
783 if (h[PVD_version_offset] != 2)
786 /* Reserved field must be 0. */
787 if (h[PVD_reserved1_offset] != 0)
790 /* Reserved field must be 0. */
791 for (i = 0; i < PVD_reserved2_size; ++i)
792 if (h[PVD_reserved2_offset + i] != 0)
795 /* Reserved field must be 0. */
796 for (i = 0; i < PVD_reserved3_size; ++i)
797 if (h[PVD_reserved3_offset + i] != 0)
800 /* Logical block size must be > 0. */
801 /* I've looked at Ecma 119 and can't find any stronger
802 * restriction on this field. */
804 archive_le16dec(h + PVD_logical_block_size_offset);
805 if (logical_block_size <= 0)
809 archive_le32dec(h + PVD_volume_space_size_offset);
810 if (volume_block <= SYSTEM_AREA_BLOCK+4)
813 /* File structure version must be 2 for ISO9660:1999. */
814 if (h[PVD_file_structure_version_offset] != 2)
817 /* Location of Occurrence of Type L Path Table must be
818 * available location,
819 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
820 location = archive_le32dec(h+PVD_type_1_path_table_offset);
821 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
824 /* Location of Occurrence of Type M Path Table must be
825 * available location,
826 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
827 location = archive_be32dec(h+PVD_type_m_path_table_offset);
828 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
829 || location >= volume_block)
832 /* Reserved field must be 0. */
833 for (i = 0; i < PVD_reserved4_size; ++i)
834 if (h[PVD_reserved4_offset + i] != 0)
837 /* Reserved field must be 0. */
838 for (i = 0; i < PVD_reserved5_size; ++i)
839 if (h[PVD_reserved5_offset + i] != 0)
842 /* Read Root Directory Record in Volume Descriptor. */
843 p = h + PVD_root_directory_record_offset;
844 if (p[DR_length_offset] != 34)
851 isPVD(struct iso9660 *iso9660, const unsigned char *h)
853 const unsigned char *p;
854 ssize_t logical_block_size;
855 int32_t volume_block;
859 /* Type of the Primary Volume Descriptor must be 1. */
860 if (h[PVD_type_offset] != 1)
863 /* PVD version must be 1. */
864 if (h[PVD_version_offset] != 1)
867 /* Reserved field must be 0. */
868 if (h[PVD_reserved1_offset] != 0)
871 /* Reserved field must be 0. */
872 for (i = 0; i < PVD_reserved2_size; ++i)
873 if (h[PVD_reserved2_offset + i] != 0)
876 /* Reserved field must be 0. */
877 for (i = 0; i < PVD_reserved3_size; ++i)
878 if (h[PVD_reserved3_offset + i] != 0)
881 /* Logical block size must be > 0. */
882 /* I've looked at Ecma 119 and can't find any stronger
883 * restriction on this field. */
885 archive_le16dec(h + PVD_logical_block_size_offset);
886 if (logical_block_size <= 0)
889 volume_block = archive_le32dec(h + PVD_volume_space_size_offset);
890 if (volume_block <= SYSTEM_AREA_BLOCK+4)
893 /* File structure version must be 1 for ISO9660/ECMA119. */
894 if (h[PVD_file_structure_version_offset] != 1)
897 /* Location of Occurrence of Type L Path Table must be
898 * available location,
899 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
900 location = archive_le32dec(h+PVD_type_1_path_table_offset);
901 if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block)
904 /* The Type M Path Table must also be at a valid location
905 * (although ECMA 119 requires a Type M Path Table, WinISO and
906 * probably other programs omit it, so we permit a zero here)
908 * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
909 location = archive_be32dec(h+PVD_type_m_path_table_offset);
910 if ((location > 0 && location < SYSTEM_AREA_BLOCK+2)
911 || location >= volume_block)
914 /* Reserved field must be 0. */
915 /* But accept NetBSD/FreeBSD "makefs" images with 0x20 here. */
916 for (i = 0; i < PVD_reserved4_size; ++i)
917 if (h[PVD_reserved4_offset + i] != 0
918 && h[PVD_reserved4_offset + i] != 0x20)
921 /* Reserved field must be 0. */
922 for (i = 0; i < PVD_reserved5_size; ++i)
923 if (h[PVD_reserved5_offset + i] != 0)
926 /* XXX TODO: Check other values for sanity; reject more
927 * malformed PVDs. XXX */
929 /* Read Root Directory Record in Volume Descriptor. */
930 p = h + PVD_root_directory_record_offset;
931 if (p[DR_length_offset] != 34)
934 if (!iso9660->primary.location) {
935 iso9660->logical_block_size = logical_block_size;
936 iso9660->volume_block = volume_block;
937 iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
938 iso9660->primary.location = archive_le32dec(p + DR_extent_offset);
939 iso9660->primary.size = archive_le32dec(p + DR_size_offset);
946 read_children(struct archive_read *a, struct file_info *parent)
948 struct iso9660 *iso9660;
949 const unsigned char *b, *p;
950 struct file_info *multi;
951 size_t step, skip_size;
953 iso9660 = (struct iso9660 *)(a->format->data);
954 if (iso9660->current_position > parent->offset) {
955 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
956 "Ignoring out-of-order directory (%s) %jd > %jd",
958 (intmax_t)iso9660->current_position,
959 (intmax_t)parent->offset);
960 return (ARCHIVE_WARN);
962 if (parent->offset + parent->size > iso9660->volume_size) {
963 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
964 "Directory is beyond end-of-media: %s",
966 return (ARCHIVE_WARN);
968 if (iso9660->current_position < parent->offset) {
971 skipsize = parent->offset - iso9660->current_position;
972 skipsize = __archive_read_consume(a, skipsize);
974 return ((int)skipsize);
975 iso9660->current_position = parent->offset;
978 step = ((parent->size + iso9660->logical_block_size -1) /
979 iso9660->logical_block_size) * iso9660->logical_block_size;
980 b = __archive_read_ahead(a, step, NULL);
982 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
983 "Failed to read full block when scanning "
984 "ISO9660 directory list");
985 return (ARCHIVE_FATAL);
987 iso9660->current_position += step;
992 b += iso9660->logical_block_size;
993 step -= iso9660->logical_block_size;
994 for (; *p != 0 && p < b && p + *p <= b; p += *p) {
995 struct file_info *child;
997 /* N.B.: these special directory identifiers
998 * are 8 bit "values" even on a
999 * Joliet CD with UCS-2 (16bit) encoding.
1002 /* Skip '.' entry. */
1003 if (*(p + DR_name_len_offset) == 1
1004 && *(p + DR_name_offset) == '\0')
1006 /* Skip '..' entry. */
1007 if (*(p + DR_name_len_offset) == 1
1008 && *(p + DR_name_offset) == '\001')
1010 child = parse_file_info(a, parent, p);
1011 if (child == NULL) {
1012 __archive_read_consume(a, skip_size);
1013 return (ARCHIVE_FATAL);
1015 if (child->cl_offset == 0 &&
1016 (child->multi_extent || multi != NULL)) {
1017 struct content *con;
1019 if (multi == NULL) {
1021 multi->contents.first = NULL;
1022 multi->contents.last =
1023 &(multi->contents.first);
1025 con = malloc(sizeof(struct content));
1028 &a->archive, ENOMEM,
1029 "No memory for multi extent");
1030 __archive_read_consume(a, skip_size);
1031 return (ARCHIVE_FATAL);
1033 con->offset = child->offset;
1034 con->size = child->size;
1036 *multi->contents.last = con;
1037 multi->contents.last = &(con->next);
1038 if (multi == child) {
1039 if (add_entry(a, iso9660, child)
1041 return (ARCHIVE_FATAL);
1043 multi->size += child->size;
1044 if (!child->multi_extent)
1048 if (add_entry(a, iso9660, child) != ARCHIVE_OK)
1049 return (ARCHIVE_FATAL);
1053 __archive_read_consume(a, skip_size);
1055 /* Read data which recorded by RRIP "CE" extension. */
1056 if (read_CE(a, iso9660) != ARCHIVE_OK)
1057 return (ARCHIVE_FATAL);
1059 return (ARCHIVE_OK);
1063 archive_read_format_iso9660_read_header(struct archive_read *a,
1064 struct archive_entry *entry)
1066 struct iso9660 *iso9660;
1067 struct file_info *file;
1068 int r, rd_r = ARCHIVE_OK;
1070 iso9660 = (struct iso9660 *)(a->format->data);
1072 if (!a->archive.archive_format) {
1073 a->archive.archive_format = ARCHIVE_FORMAT_ISO9660;
1074 a->archive.archive_format_name = "ISO9660";
1077 if (iso9660->current_position == 0) {
1083 vd = &(iso9660->primary);
1084 if (!iso9660->opt_support_joliet)
1085 iso9660->seenJoliet = 0;
1086 if (iso9660->seenJoliet &&
1087 vd->location > iso9660->joliet.location)
1088 /* This condition is unlikely; by way of caution. */
1089 vd = &(iso9660->joliet);
1091 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1092 skipsize = __archive_read_consume(a, skipsize);
1094 return ((int)skipsize);
1095 iso9660->current_position = skipsize;
1097 block = __archive_read_ahead(a, vd->size, NULL);
1098 if (block == NULL) {
1099 archive_set_error(&a->archive,
1101 "Failed to read full block when scanning "
1102 "ISO9660 directory list");
1103 return (ARCHIVE_FATAL);
1107 * While reading Root Directory, flag seenJoliet
1108 * must be zero to avoid converting special name
1109 * 0x00(Current Directory) and 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;
1117 if (vd == &(iso9660->primary) && iso9660->seenRockridge
1118 && iso9660->seenJoliet)
1120 * If iso image has RockRidge and Joliet,
1121 * we use RockRidge Extensions.
1123 iso9660->seenJoliet = 0;
1124 if (vd == &(iso9660->primary) && !iso9660->seenRockridge
1125 && iso9660->seenJoliet) {
1126 /* Switch reading data from primary to joliet. */
1127 vd = &(iso9660->joliet);
1128 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1129 skipsize -= iso9660->current_position;
1130 skipsize = __archive_read_consume(a, skipsize);
1132 return ((int)skipsize);
1133 iso9660->current_position += skipsize;
1135 block = __archive_read_ahead(a, vd->size, NULL);
1136 if (block == NULL) {
1137 archive_set_error(&a->archive,
1139 "Failed to read full block when scanning "
1140 "ISO9660 directory list");
1141 return (ARCHIVE_FATAL);
1143 iso9660->seenJoliet = 0;
1144 file = parse_file_info(a, NULL, block);
1146 return (ARCHIVE_FATAL);
1147 iso9660->seenJoliet = seenJoliet;
1149 /* Store the root directory in the pending list. */
1150 if (add_entry(a, iso9660, file) != ARCHIVE_OK)
1151 return (ARCHIVE_FATAL);
1152 if (iso9660->seenRockridge) {
1153 a->archive.archive_format =
1154 ARCHIVE_FORMAT_ISO9660_ROCKRIDGE;
1155 a->archive.archive_format_name =
1156 "ISO9660 with Rockridge extensions";
1160 file = NULL;/* Eliminate a warning. */
1161 /* Get the next entry that appears after the current offset. */
1162 r = next_entry_seek(a, iso9660, &file);
1163 if (r != ARCHIVE_OK)
1166 if (iso9660->seenJoliet) {
1168 * Convert UTF-16BE of a filename to local locale MBS
1169 * and store the result into a filename field.
1171 if (iso9660->sconv_utf16be == NULL) {
1172 iso9660->sconv_utf16be =
1173 archive_string_conversion_from_charset(
1174 &(a->archive), "UTF-16BE", 1);
1175 if (iso9660->sconv_utf16be == NULL)
1176 /* Coundn't allocate memory */
1177 return (ARCHIVE_FATAL);
1179 if (iso9660->utf16be_path == NULL) {
1180 iso9660->utf16be_path = malloc(UTF16_NAME_MAX);
1181 if (iso9660->utf16be_path == NULL) {
1182 archive_set_error(&a->archive, ENOMEM,
1184 return (ARCHIVE_FATAL);
1187 if (iso9660->utf16be_previous_path == NULL) {
1188 iso9660->utf16be_previous_path = malloc(UTF16_NAME_MAX);
1189 if (iso9660->utf16be_previous_path == NULL) {
1190 archive_set_error(&a->archive, ENOMEM,
1192 return (ARCHIVE_FATAL);
1196 iso9660->utf16be_path_len = 0;
1197 if (build_pathname_utf16be(iso9660->utf16be_path,
1198 UTF16_NAME_MAX, &(iso9660->utf16be_path_len), file) != 0) {
1199 archive_set_error(&a->archive,
1200 ARCHIVE_ERRNO_FILE_FORMAT,
1201 "Pathname is too long");
1204 r = archive_entry_copy_pathname_l(entry,
1205 (const char *)iso9660->utf16be_path,
1206 iso9660->utf16be_path_len,
1207 iso9660->sconv_utf16be);
1209 if (errno == ENOMEM) {
1210 archive_set_error(&a->archive, ENOMEM,
1211 "No memory for Pathname");
1212 return (ARCHIVE_FATAL);
1214 archive_set_error(&a->archive,
1215 ARCHIVE_ERRNO_FILE_FORMAT,
1216 "Pathname cannot be converted "
1217 "from %s to current locale.",
1218 archive_string_conversion_charset_name(
1219 iso9660->sconv_utf16be));
1221 rd_r = ARCHIVE_WARN;
1224 archive_string_empty(&iso9660->pathname);
1225 archive_entry_set_pathname(entry,
1226 build_pathname(&iso9660->pathname, file));
1229 iso9660->entry_bytes_remaining = file->size;
1230 iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */
1232 if (file->offset + file->size > iso9660->volume_size) {
1233 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1234 "File is beyond end-of-media: %s",
1235 archive_entry_pathname(entry));
1236 iso9660->entry_bytes_remaining = 0;
1237 iso9660->entry_sparse_offset = 0;
1238 return (ARCHIVE_WARN);
1241 /* Set up the entry structure with information about this entry. */
1242 archive_entry_set_mode(entry, file->mode);
1243 archive_entry_set_uid(entry, file->uid);
1244 archive_entry_set_gid(entry, file->gid);
1245 archive_entry_set_nlink(entry, file->nlinks);
1246 if (file->birthtime_is_set)
1247 archive_entry_set_birthtime(entry, file->birthtime, 0);
1249 archive_entry_unset_birthtime(entry);
1250 archive_entry_set_mtime(entry, file->mtime, 0);
1251 archive_entry_set_ctime(entry, file->ctime, 0);
1252 archive_entry_set_atime(entry, file->atime, 0);
1253 /* N.B.: Rock Ridge supports 64-bit device numbers. */
1254 archive_entry_set_rdev(entry, (dev_t)file->rdev);
1255 archive_entry_set_size(entry, iso9660->entry_bytes_remaining);
1256 if (file->symlink.s != NULL)
1257 archive_entry_copy_symlink(entry, file->symlink.s);
1259 /* Note: If the input isn't seekable, we can't rewind to
1260 * return the same body again, so if the next entry refers to
1261 * the same data, we have to return it as a hardlink to the
1262 * original entry. */
1263 if (file->number != -1 &&
1264 file->number == iso9660->previous_number) {
1265 if (iso9660->seenJoliet) {
1266 r = archive_entry_copy_hardlink_l(entry,
1267 (const char *)iso9660->utf16be_previous_path,
1268 iso9660->utf16be_previous_path_len,
1269 iso9660->sconv_utf16be);
1271 if (errno == ENOMEM) {
1272 archive_set_error(&a->archive, ENOMEM,
1273 "No memory for Linkname");
1274 return (ARCHIVE_FATAL);
1276 archive_set_error(&a->archive,
1277 ARCHIVE_ERRNO_FILE_FORMAT,
1278 "Linkname cannot be converted "
1279 "from %s to current locale.",
1280 archive_string_conversion_charset_name(
1281 iso9660->sconv_utf16be));
1282 rd_r = ARCHIVE_WARN;
1285 archive_entry_set_hardlink(entry,
1286 iso9660->previous_pathname.s);
1287 archive_entry_unset_size(entry);
1288 iso9660->entry_bytes_remaining = 0;
1289 iso9660->entry_sparse_offset = 0;
1293 /* Except for the hardlink case above, if the offset of the
1294 * next entry is before our current position, we can't seek
1295 * backwards to extract it, so issue a warning. Note that
1296 * this can only happen if this entry was added to the heap
1297 * after we passed this offset, that is, only if the directory
1298 * mentioning this entry is later than the body of the entry.
1299 * Such layouts are very unusual; most ISO9660 writers lay out
1300 * and record all directory information first, then store
1301 * all file bodies. */
1302 /* TODO: Someday, libarchive's I/O core will support optional
1303 * seeking. When that day comes, this code should attempt to
1304 * seek and only return the error if the seek fails. That
1305 * will give us support for whacky ISO images that require
1306 * seeking while retaining the ability to read almost all ISO
1307 * images in a streaming fashion. */
1308 if ((file->mode & AE_IFMT) != AE_IFDIR &&
1309 file->offset < iso9660->current_position) {
1310 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1311 "Ignoring out-of-order file @%jx (%s) %jd < %jd",
1312 (intmax_t)file->number,
1313 iso9660->pathname.s,
1314 (intmax_t)file->offset,
1315 (intmax_t)iso9660->current_position);
1316 iso9660->entry_bytes_remaining = 0;
1317 iso9660->entry_sparse_offset = 0;
1318 return (ARCHIVE_WARN);
1321 /* Initialize zisofs variables. */
1322 iso9660->entry_zisofs.pz = file->pz;
1325 struct zisofs *zisofs;
1327 zisofs = &iso9660->entry_zisofs;
1328 zisofs->initialized = 0;
1329 zisofs->pz_log2_bs = file->pz_log2_bs;
1330 zisofs->pz_uncompressed_size = file->pz_uncompressed_size;
1331 zisofs->pz_offset = 0;
1332 zisofs->header_avail = 0;
1333 zisofs->header_passed = 0;
1334 zisofs->block_pointers_avail = 0;
1336 archive_entry_set_size(entry, file->pz_uncompressed_size);
1339 iso9660->previous_number = file->number;
1340 if (iso9660->seenJoliet) {
1341 memcpy(iso9660->utf16be_previous_path, iso9660->utf16be_path,
1342 iso9660->utf16be_path_len);
1343 iso9660->utf16be_previous_path_len = iso9660->utf16be_path_len;
1346 &iso9660->previous_pathname, iso9660->pathname.s);
1348 /* Reset entry_bytes_remaining if the file is multi extent. */
1349 iso9660->entry_content = file->contents.first;
1350 if (iso9660->entry_content != NULL)
1351 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1353 if (archive_entry_filetype(entry) == AE_IFDIR) {
1354 /* Overwrite nlinks by proper link number which is
1355 * calculated from number of sub directories. */
1356 archive_entry_set_nlink(entry, 2 + file->subdirs);
1357 /* Directory data has been read completely. */
1358 iso9660->entry_bytes_remaining = 0;
1359 iso9660->entry_sparse_offset = 0;
1362 if (rd_r != ARCHIVE_OK)
1364 return (ARCHIVE_OK);
1368 archive_read_format_iso9660_read_data_skip(struct archive_read *a)
1370 /* Because read_next_header always does an explicit skip
1371 * to the next entry, we don't need to do anything here. */
1372 (void)a; /* UNUSED */
1373 return (ARCHIVE_OK);
1379 zisofs_read_data(struct archive_read *a,
1380 const void **buff, size_t *size, int64_t *offset)
1382 struct iso9660 *iso9660;
1383 struct zisofs *zisofs;
1384 const unsigned char *p;
1387 size_t uncompressed_size;
1390 iso9660 = (struct iso9660 *)(a->format->data);
1391 zisofs = &iso9660->entry_zisofs;
1393 p = __archive_read_ahead(a, 1, &bytes_read);
1394 if (bytes_read <= 0) {
1395 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1396 "Truncated zisofs file body");
1397 return (ARCHIVE_FATAL);
1399 if (bytes_read > iso9660->entry_bytes_remaining)
1400 bytes_read = iso9660->entry_bytes_remaining;
1402 uncompressed_size = 0;
1404 if (!zisofs->initialized) {
1407 /* Allocate block pointers buffer. */
1408 ceil = (zisofs->pz_uncompressed_size +
1409 (1LL << zisofs->pz_log2_bs) - 1)
1410 >> zisofs->pz_log2_bs;
1411 xsize = (ceil + 1) * 4;
1412 if (zisofs->block_pointers_alloc < xsize) {
1415 if (zisofs->block_pointers != NULL)
1416 free(zisofs->block_pointers);
1417 alloc = ((xsize >> 10) + 1) << 10;
1418 zisofs->block_pointers = malloc(alloc);
1419 if (zisofs->block_pointers == NULL) {
1420 archive_set_error(&a->archive, ENOMEM,
1421 "No memory for zisofs decompression");
1422 return (ARCHIVE_FATAL);
1424 zisofs->block_pointers_alloc = alloc;
1426 zisofs->block_pointers_size = xsize;
1428 /* Allocate uncompressed data buffer. */
1429 xsize = 1UL << zisofs->pz_log2_bs;
1430 if (zisofs->uncompressed_buffer_size < xsize) {
1431 if (zisofs->uncompressed_buffer != NULL)
1432 free(zisofs->uncompressed_buffer);
1433 zisofs->uncompressed_buffer = malloc(xsize);
1434 if (zisofs->uncompressed_buffer == NULL) {
1435 archive_set_error(&a->archive, ENOMEM,
1436 "No memory for zisofs decompression");
1437 return (ARCHIVE_FATAL);
1440 zisofs->uncompressed_buffer_size = xsize;
1443 * Read the file header, and check the magic code of zisofs.
1445 if (zisofs->header_avail < sizeof(zisofs->header)) {
1446 xsize = sizeof(zisofs->header) - zisofs->header_avail;
1449 memcpy(zisofs->header + zisofs->header_avail, p, xsize);
1450 zisofs->header_avail += xsize;
1454 if (!zisofs->header_passed &&
1455 zisofs->header_avail == sizeof(zisofs->header)) {
1458 if (memcmp(zisofs->header, zisofs_magic,
1459 sizeof(zisofs_magic)) != 0)
1461 if (archive_le32dec(zisofs->header + 8)
1462 != zisofs->pz_uncompressed_size)
1464 if (zisofs->header[12] != 4)
1466 if (zisofs->header[13] != zisofs->pz_log2_bs)
1469 archive_set_error(&a->archive,
1470 ARCHIVE_ERRNO_FILE_FORMAT,
1471 "Illegal zisofs file body");
1472 return (ARCHIVE_FATAL);
1474 zisofs->header_passed = 1;
1477 * Read block pointers.
1479 if (zisofs->header_passed &&
1480 zisofs->block_pointers_avail < zisofs->block_pointers_size) {
1481 xsize = zisofs->block_pointers_size
1482 - zisofs->block_pointers_avail;
1485 memcpy(zisofs->block_pointers
1486 + zisofs->block_pointers_avail, p, xsize);
1487 zisofs->block_pointers_avail += xsize;
1490 if (zisofs->block_pointers_avail
1491 == zisofs->block_pointers_size) {
1492 /* We've got all block pointers and initialize
1493 * related variables. */
1494 zisofs->block_off = 0;
1495 zisofs->block_avail = 0;
1496 /* Complete a initialization */
1497 zisofs->initialized = 1;
1501 if (!zisofs->initialized)
1502 goto next_data; /* We need more data. */
1506 * Get block offsets from block pointers.
1508 if (zisofs->block_avail == 0) {
1511 if (zisofs->block_off + 4 >= zisofs->block_pointers_size) {
1512 /* There isn't a pair of offsets. */
1513 archive_set_error(&a->archive,
1514 ARCHIVE_ERRNO_FILE_FORMAT,
1515 "Illegal zisofs block pointers");
1516 return (ARCHIVE_FATAL);
1518 bst = archive_le32dec(
1519 zisofs->block_pointers + zisofs->block_off);
1520 if (bst != zisofs->pz_offset + (bytes_read - avail)) {
1521 /* TODO: Should we seek offset of current file
1523 archive_set_error(&a->archive,
1524 ARCHIVE_ERRNO_FILE_FORMAT,
1525 "Illegal zisofs block pointers(cannot seek)");
1526 return (ARCHIVE_FATAL);
1528 bed = archive_le32dec(
1529 zisofs->block_pointers + zisofs->block_off + 4);
1531 archive_set_error(&a->archive,
1532 ARCHIVE_ERRNO_FILE_FORMAT,
1533 "Illegal zisofs block pointers");
1534 return (ARCHIVE_FATAL);
1536 zisofs->block_avail = bed - bst;
1537 zisofs->block_off += 4;
1539 /* Initialize compression library for new block. */
1540 if (zisofs->stream_valid)
1541 r = inflateReset(&zisofs->stream);
1543 r = inflateInit(&zisofs->stream);
1545 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1546 "Can't initialize zisofs decompression.");
1547 return (ARCHIVE_FATAL);
1549 zisofs->stream_valid = 1;
1550 zisofs->stream.total_in = 0;
1551 zisofs->stream.total_out = 0;
1555 * Make uncompressed data.
1557 if (zisofs->block_avail == 0) {
1558 memset(zisofs->uncompressed_buffer, 0,
1559 zisofs->uncompressed_buffer_size);
1560 uncompressed_size = zisofs->uncompressed_buffer_size;
1562 zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p;
1563 if (avail > zisofs->block_avail)
1564 zisofs->stream.avail_in = zisofs->block_avail;
1566 zisofs->stream.avail_in = avail;
1567 zisofs->stream.next_out = zisofs->uncompressed_buffer;
1568 zisofs->stream.avail_out = zisofs->uncompressed_buffer_size;
1570 r = inflate(&zisofs->stream, 0);
1572 case Z_OK: /* Decompressor made some progress.*/
1573 case Z_STREAM_END: /* Found end of stream. */
1576 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1577 "zisofs decompression failed (%d)", r);
1578 return (ARCHIVE_FATAL);
1581 zisofs->uncompressed_buffer_size - zisofs->stream.avail_out;
1582 avail -= zisofs->stream.next_in - p;
1583 zisofs->block_avail -= zisofs->stream.next_in - p;
1586 bytes_read -= avail;
1587 *buff = zisofs->uncompressed_buffer;
1588 *size = uncompressed_size;
1589 *offset = iso9660->entry_sparse_offset;
1590 iso9660->entry_sparse_offset += uncompressed_size;
1591 iso9660->entry_bytes_remaining -= bytes_read;
1592 iso9660->current_position += bytes_read;
1593 zisofs->pz_offset += bytes_read;
1594 iso9660->entry_bytes_unconsumed += bytes_read;
1596 return (ARCHIVE_OK);
1599 #else /* HAVE_ZLIB_H */
1602 zisofs_read_data(struct archive_read *a,
1603 const void **buff, size_t *size, int64_t *offset)
1606 (void)buff;/* UNUSED */
1607 (void)size;/* UNUSED */
1608 (void)offset;/* UNUSED */
1609 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1610 "zisofs is not supported on this platform.");
1611 return (ARCHIVE_FAILED);
1614 #endif /* HAVE_ZLIB_H */
1617 archive_read_format_iso9660_read_data(struct archive_read *a,
1618 const void **buff, size_t *size, int64_t *offset)
1621 struct iso9660 *iso9660;
1623 iso9660 = (struct iso9660 *)(a->format->data);
1625 if (iso9660->entry_bytes_unconsumed) {
1626 __archive_read_consume(a, iso9660->entry_bytes_unconsumed);
1627 iso9660->entry_bytes_unconsumed = 0;
1630 if (iso9660->entry_bytes_remaining <= 0) {
1631 if (iso9660->entry_content != NULL)
1632 iso9660->entry_content = iso9660->entry_content->next;
1633 if (iso9660->entry_content == NULL) {
1636 *offset = iso9660->entry_sparse_offset;
1637 return (ARCHIVE_EOF);
1639 /* Seek forward to the start of the entry. */
1640 if (iso9660->current_position < iso9660->entry_content->offset) {
1643 step = iso9660->entry_content->offset -
1644 iso9660->current_position;
1645 step = __archive_read_consume(a, step);
1648 iso9660->current_position =
1649 iso9660->entry_content->offset;
1651 if (iso9660->entry_content->offset < iso9660->current_position) {
1652 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1653 "Ignoring out-of-order file (%s) %jd < %jd",
1654 iso9660->pathname.s,
1655 (intmax_t)iso9660->entry_content->offset,
1656 (intmax_t)iso9660->current_position);
1659 *offset = iso9660->entry_sparse_offset;
1660 return (ARCHIVE_WARN);
1662 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1664 if (iso9660->entry_zisofs.pz)
1665 return (zisofs_read_data(a, buff, size, offset));
1667 *buff = __archive_read_ahead(a, 1, &bytes_read);
1668 if (bytes_read == 0)
1669 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1670 "Truncated input file");
1672 return (ARCHIVE_FATAL);
1673 if (bytes_read > iso9660->entry_bytes_remaining)
1674 bytes_read = iso9660->entry_bytes_remaining;
1676 *offset = iso9660->entry_sparse_offset;
1677 iso9660->entry_sparse_offset += bytes_read;
1678 iso9660->entry_bytes_remaining -= bytes_read;
1679 iso9660->entry_bytes_unconsumed = bytes_read;
1680 iso9660->current_position += bytes_read;
1681 return (ARCHIVE_OK);
1685 archive_read_format_iso9660_cleanup(struct archive_read *a)
1687 struct iso9660 *iso9660;
1690 iso9660 = (struct iso9660 *)(a->format->data);
1691 release_files(iso9660);
1692 free(iso9660->read_ce_req.reqs);
1693 archive_string_free(&iso9660->pathname);
1694 archive_string_free(&iso9660->previous_pathname);
1695 if (iso9660->pending_files.files)
1696 free(iso9660->pending_files.files);
1698 free(iso9660->entry_zisofs.uncompressed_buffer);
1699 free(iso9660->entry_zisofs.block_pointers);
1700 if (iso9660->entry_zisofs.stream_valid) {
1701 if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) {
1702 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1703 "Failed to clean up zlib decompressor");
1708 free(iso9660->utf16be_path);
1709 free(iso9660->utf16be_previous_path);
1711 (a->format->data) = NULL;
1716 * This routine parses a single ISO directory record, makes sense
1717 * of any extensions, and stores the result in memory.
1719 static struct file_info *
1720 parse_file_info(struct archive_read *a, struct file_info *parent,
1721 const unsigned char *isodirrec)
1723 struct iso9660 *iso9660;
1724 struct file_info *file;
1726 const unsigned char *rr_start, *rr_end;
1727 const unsigned char *p;
1733 iso9660 = (struct iso9660 *)(a->format->data);
1735 dr_len = (size_t)isodirrec[DR_length_offset];
1736 name_len = (size_t)isodirrec[DR_name_len_offset];
1737 location = archive_le32dec(isodirrec + DR_extent_offset);
1738 fsize = toi(isodirrec + DR_size_offset, DR_size_size);
1739 /* Sanity check that dr_len needs at least 34. */
1741 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1742 "Invalid length of directory record");
1745 /* Sanity check that name_len doesn't exceed dr_len. */
1746 if (dr_len - 33 < name_len || name_len == 0) {
1747 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1748 "Invalid length of file identifier");
1751 /* Sanity check that location doesn't exceed volume block.
1752 * Don't check lower limit of location; it's possibility
1753 * the location has negative value when file type is symbolic
1754 * link or file size is zero. As far as I know latest mkisofs
1758 (location + ((fsize + iso9660->logical_block_size -1)
1759 / iso9660->logical_block_size))
1760 > (uint32_t)iso9660->volume_block) {
1761 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1762 "Invalid location of extent of file");
1765 /* Sanity check that location doesn't have a negative value
1766 * when the file is not empty. it's too large. */
1767 if (fsize != 0 && location < 0) {
1768 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1769 "Invalid location of extent of file");
1773 /* Create a new file entry and copy data from the ISO dir record. */
1774 file = (struct file_info *)calloc(1, sizeof(*file));
1776 archive_set_error(&a->archive, ENOMEM,
1777 "No memory for file entry");
1780 file->parent = parent;
1781 file->offset = iso9660->logical_block_size * (uint64_t)location;
1783 file->mtime = isodate7(isodirrec + DR_date_offset);
1784 file->ctime = file->atime = file->mtime;
1785 file->rede_files.first = NULL;
1786 file->rede_files.last = &(file->rede_files.first);
1788 p = isodirrec + DR_name_offset;
1789 /* Rockridge extensions (if any) follow name. Compute this
1790 * before fidgeting the name_len below. */
1791 rr_start = p + name_len + (name_len & 1 ? 0 : 1);
1792 rr_end = isodirrec + dr_len;
1794 if (iso9660->seenJoliet) {
1795 /* Joliet names are max 64 chars (128 bytes) according to spec,
1796 * but genisoimage/mkisofs allows recording longer Joliet
1797 * names which are 103 UCS2 characters(206 bytes) by their
1798 * option '-joliet-long'.
1804 /* trim trailing first version and dot from filename.
1806 * Remember we were in UTF-16BE land!
1807 * SEPARATOR 1 (.) and SEPARATOR 2 (;) are both
1808 * 16 bits big endian characters on Joliet.
1810 * TODO: sanitize filename?
1811 * Joliet allows any UCS-2 char except:
1812 * *, /, :, ;, ? and \.
1814 /* Chop off trailing ';1' from files. */
1815 if (name_len > 4 && p[name_len-4] == 0 && p[name_len-3] == ';'
1816 && p[name_len-2] == 0 && p[name_len-1] == '1')
1818 #if 0 /* XXX: this somehow manages to strip of single-character file extensions, like '.c'. */
1819 /* Chop off trailing '.' from filenames. */
1820 if (name_len > 2 && p[name_len-2] == 0 && p[name_len-1] == '.')
1823 if ((file->utf16be_name = malloc(name_len)) == NULL) {
1824 archive_set_error(&a->archive, ENOMEM,
1825 "No memory for file name");
1828 memcpy(file->utf16be_name, p, name_len);
1829 file->utf16be_bytes = name_len;
1831 /* Chop off trailing ';1' from files. */
1832 if (name_len > 2 && p[name_len - 2] == ';' &&
1833 p[name_len - 1] == '1')
1835 /* Chop off trailing '.' from filenames. */
1836 if (name_len > 1 && p[name_len - 1] == '.')
1839 archive_strncpy(&file->name, (const char *)p, name_len);
1842 flags = isodirrec[DR_flags_offset];
1844 file->mode = AE_IFDIR | 0700;
1846 file->mode = AE_IFREG | 0400;
1848 file->multi_extent = 1;
1850 file->multi_extent = 0;
1852 * Use a location for the file number, which is treated as an inode
1853 * number to find out hardlink target. If Rockridge extensions is
1854 * being used, the file number will be overwritten by FILE SERIAL
1855 * NUMBER of RRIP "PX" extension.
1856 * Note: Old mkisofs did not record that FILE SERIAL NUMBER
1858 * Note2: xorriso set 0 to the location of a symlink file.
1860 if (file->size == 0 && location >= 0) {
1861 /* If file->size is zero, its location points wrong place,
1862 * and so we should not use it for the file number.
1863 * When the location has negative value, it can be used
1864 * for the file number.
1867 /* Do not appear before any directory entries. */
1870 file->number = (int64_t)(uint32_t)location;
1872 /* Rockridge extensions overwrite information from above. */
1873 if (iso9660->opt_support_rockridge) {
1874 if (parent == NULL && rr_end - rr_start >= 7) {
1876 if (p[0] == 'S' && p[1] == 'P'
1877 && p[2] == 7 && p[3] == 1
1878 && p[4] == 0xBE && p[5] == 0xEF) {
1880 * SP extension stores the suspOffset
1881 * (Number of bytes to skip between
1882 * filename and SUSP records.)
1883 * It is mandatory by the SUSP standard
1886 * It allows SUSP to coexist with
1887 * non-SUSP uses of the System
1888 * Use Area by placing non-SUSP data
1891 * SP extension must be in the root
1892 * directory entry, disable all SUSP
1893 * processing if not found.
1895 iso9660->suspOffset = p[6];
1896 iso9660->seenSUSP = 1;
1900 if (iso9660->seenSUSP) {
1903 file->name_continues = 0;
1904 file->symlink_continues = 0;
1905 rr_start += iso9660->suspOffset;
1906 r = parse_rockridge(a, file, rr_start, rr_end);
1907 if (r != ARCHIVE_OK) {
1912 * A file size of symbolic link files in ISO images
1913 * made by makefs is not zero and its location is
1914 * the same as those of next regular file. That is
1915 * the same as hard like file and it causes unexpected
1918 if (file->size > 0 &&
1919 (file->mode & AE_IFMT) == AE_IFLNK) {
1925 /* If there isn't SUSP, disable parsing
1926 * rock ridge extensions. */
1927 iso9660->opt_support_rockridge = 0;
1930 file->nlinks = 1;/* Reset nlink. we'll calculate it later. */
1931 /* Tell file's parent how many children that parent has. */
1932 if (parent != NULL && (flags & 0x02))
1935 if (iso9660->seenRockridge) {
1936 if (parent != NULL && parent->parent == NULL &&
1937 (flags & 0x02) && iso9660->rr_moved == NULL &&
1938 (strcmp(file->name.s, "rr_moved") == 0 ||
1939 strcmp(file->name.s, ".rr_moved") == 0)) {
1940 iso9660->rr_moved = file;
1942 file->rr_moved_has_re_only = 1;
1945 } else if (file->re) {
1947 * Sanity check: file's parent is rr_moved.
1949 if (parent == NULL || parent->rr_moved == 0) {
1950 archive_set_error(&a->archive,
1952 "Invalid Rockridge RE");
1956 * Sanity check: file does not have "CL" extension.
1958 if (file->cl_offset) {
1959 archive_set_error(&a->archive,
1961 "Invalid Rockridge RE and CL");
1965 * Sanity check: The file type must be a directory.
1967 if ((flags & 0x02) == 0) {
1968 archive_set_error(&a->archive,
1970 "Invalid Rockridge RE");
1973 } else if (parent != NULL && parent->rr_moved)
1974 file->rr_moved_has_re_only = 0;
1975 else if (parent != NULL && (flags & 0x02) &&
1976 (parent->re || parent->re_descendant))
1977 file->re_descendant = 1;
1978 if (file->cl_offset) {
1979 struct file_info *r;
1981 if (parent == NULL || parent->parent == NULL) {
1982 archive_set_error(&a->archive,
1984 "Invalid Rockridge CL");
1988 * Sanity check: The file type must be a regular file.
1990 if ((flags & 0x02) != 0) {
1991 archive_set_error(&a->archive,
1993 "Invalid Rockridge CL");
1997 /* Overwrite an offset and a number of this "CL" entry
1998 * to appear before other dirs. "+1" to those is to
1999 * make sure to appear after "RE" entry which this
2000 * "CL" entry should be connected with. */
2001 file->offset = file->number = file->cl_offset + 1;
2004 * Sanity check: cl_offset does not point at its
2005 * the parents or itself.
2007 for (r = parent; r; r = r->parent) {
2008 if (r->offset == file->cl_offset) {
2009 archive_set_error(&a->archive,
2011 "Invalid Rockridge CL");
2015 if (file->cl_offset == file->offset ||
2017 archive_set_error(&a->archive,
2019 "Invalid Rockridge CL");
2026 /* DEBUGGING: Warn about attributes I don't yet fully support. */
2027 if ((flags & ~0x02) != 0) {
2028 fprintf(stderr, "\n ** Unrecognized flag: ");
2029 dump_isodirrec(stderr, isodirrec);
2030 fprintf(stderr, "\n");
2031 } else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) {
2032 fprintf(stderr, "\n ** Unrecognized sequence number: ");
2033 dump_isodirrec(stderr, isodirrec);
2034 fprintf(stderr, "\n");
2035 } else if (*(isodirrec + DR_file_unit_size_offset) != 0) {
2036 fprintf(stderr, "\n ** Unexpected file unit size: ");
2037 dump_isodirrec(stderr, isodirrec);
2038 fprintf(stderr, "\n");
2039 } else if (*(isodirrec + DR_interleave_offset) != 0) {
2040 fprintf(stderr, "\n ** Unexpected interleave: ");
2041 dump_isodirrec(stderr, isodirrec);
2042 fprintf(stderr, "\n");
2043 } else if (*(isodirrec + DR_ext_attr_length_offset) != 0) {
2044 fprintf(stderr, "\n ** Unexpected extended attribute length: ");
2045 dump_isodirrec(stderr, isodirrec);
2046 fprintf(stderr, "\n");
2049 register_file(iso9660, file);
2054 parse_rockridge(struct archive_read *a, struct file_info *file,
2055 const unsigned char *p, const unsigned char *end)
2057 struct iso9660 *iso9660;
2059 iso9660 = (struct iso9660 *)(a->format->data);
2061 while (p + 4 <= end /* Enough space for another entry. */
2062 && p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */
2063 && p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */
2064 && p[2] >= 4 /* Sanity-check length. */
2065 && p + p[2] <= end) { /* Sanity-check length. */
2066 const unsigned char *data = p + 4;
2067 int data_length = p[2] - 4;
2071 * Yes, each 'if' here does test p[0] again.
2072 * Otherwise, the fall-through handling to catch
2073 * unsupported extensions doesn't work.
2077 if (p[0] == 'C' && p[1] == 'E') {
2078 if (version == 1 && data_length == 24) {
2080 * CE extension comprises:
2081 * 8 byte sector containing extension
2082 * 8 byte offset w/in above sector
2083 * 8 byte length of continuation
2086 archive_le32dec(data);
2088 archive_le32dec(data+8);
2090 archive_le32dec(data+16);
2091 if (register_CE(a, location, file)
2093 return (ARCHIVE_FATAL);
2097 if (p[0] == 'C' && p[1] == 'L') {
2098 if (version == 1 && data_length == 8) {
2099 file->cl_offset = (uint64_t)
2100 iso9660->logical_block_size *
2101 (uint64_t)archive_le32dec(data);
2102 iso9660->seenRockridge = 1;
2108 if (p[0] == 'N' && p[1] == 'M') {
2110 parse_rockridge_NM1(file,
2112 iso9660->seenRockridge = 1;
2118 if (p[0] == 'P' && p[1] == 'D') {
2120 * PD extension is padding;
2121 * contents are always ignored.
2125 if (p[0] == 'P' && p[1] == 'L') {
2127 * PL extension won't appear;
2128 * contents are always ignored.
2132 if (p[0] == 'P' && p[1] == 'N') {
2133 if (version == 1 && data_length == 16) {
2134 file->rdev = toi(data,4);
2136 file->rdev |= toi(data + 8, 4);
2137 iso9660->seenRockridge = 1;
2141 if (p[0] == 'P' && p[1] == 'X') {
2143 * PX extension comprises:
2145 * 8 bytes for nlinks,
2148 * 8 bytes for inode.
2151 if (data_length >= 8)
2154 if (data_length >= 16)
2157 if (data_length >= 24)
2159 = toi(data + 16, 4);
2160 if (data_length >= 32)
2162 = toi(data + 24, 4);
2163 if (data_length >= 40)
2165 = toi(data + 32, 4);
2166 iso9660->seenRockridge = 1;
2172 if (p[0] == 'R' && p[1] == 'E' && version == 1) {
2174 iso9660->seenRockridge = 1;
2177 if (p[0] == 'R' && p[1] == 'R' && version == 1) {
2179 * RR extension comprises:
2180 * one byte flag value
2181 * This extension is obsolete,
2182 * so contents are always ignored.
2188 if (p[0] == 'S' && p[1] == 'L') {
2190 parse_rockridge_SL1(file,
2192 iso9660->seenRockridge = 1;
2196 if (p[0] == 'S' && 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);
2212 if (p[0] == 'T' && p[1] == 'F') {
2214 parse_rockridge_TF1(file,
2216 iso9660->seenRockridge = 1;
2222 if (p[0] == 'Z' && p[1] == 'F') {
2224 parse_rockridge_ZF1(file,
2230 /* The FALLTHROUGHs above leave us here for
2231 * any unsupported extension. */
2239 return (ARCHIVE_OK);
2243 register_CE(struct archive_read *a, int32_t location,
2244 struct file_info *file)
2246 struct iso9660 *iso9660;
2247 struct read_ce_queue *heap;
2248 struct read_ce_req *p;
2249 uint64_t offset, parent_offset;
2252 iso9660 = (struct iso9660 *)(a->format->data);
2253 offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size;
2254 if (((file->mode & AE_IFMT) == AE_IFREG &&
2255 offset >= file->offset) ||
2256 offset < iso9660->current_position ||
2257 (((uint64_t)file->ce_offset) + file->ce_size)
2258 > (uint64_t)iso9660->logical_block_size ||
2259 offset + file->ce_offset + file->ce_size
2260 > iso9660->volume_size) {
2261 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2262 "Invalid parameter in SUSP \"CE\" extension");
2263 return (ARCHIVE_FATAL);
2266 /* Expand our CE list as necessary. */
2267 heap = &(iso9660->read_ce_req);
2268 if (heap->cnt >= heap->allocated) {
2271 if (heap->allocated < 16)
2274 new_size = heap->allocated * 2;
2275 /* Overflow might keep us from growing the list. */
2276 if (new_size <= heap->allocated) {
2277 archive_set_error(&a->archive, ENOMEM, "Out of memory");
2278 return (ARCHIVE_FATAL);
2280 p = malloc(new_size * sizeof(p[0]));
2282 archive_set_error(&a->archive, ENOMEM, "Out of memory");
2283 return (ARCHIVE_FATAL);
2285 if (heap->reqs != NULL) {
2286 memcpy(p, heap->reqs, heap->cnt * sizeof(*p));
2290 heap->allocated = new_size;
2294 * Start with hole at end, walk it up tree to find insertion point.
2298 parent = (hole - 1)/2;
2299 parent_offset = heap->reqs[parent].offset;
2300 if (offset >= parent_offset) {
2301 heap->reqs[hole].offset = offset;
2302 heap->reqs[hole].file = file;
2303 return (ARCHIVE_OK);
2305 /* Move parent into hole <==> move hole up tree. */
2306 heap->reqs[hole] = heap->reqs[parent];
2309 heap->reqs[0].offset = offset;
2310 heap->reqs[0].file = file;
2311 return (ARCHIVE_OK);
2315 next_CE(struct read_ce_queue *heap)
2317 uint64_t a_offset, b_offset, c_offset;
2319 struct read_ce_req tmp;
2325 * Move the last item in the heap to the root of the tree
2327 heap->reqs[0] = heap->reqs[--(heap->cnt)];
2330 * Rebalance the heap.
2332 a = 0; /* Starting element and its offset */
2333 a_offset = heap->reqs[a].offset;
2335 b = a + a + 1; /* First child */
2338 b_offset = heap->reqs[b].offset;
2339 c = b + 1; /* Use second child if it is smaller. */
2340 if (c < heap->cnt) {
2341 c_offset = heap->reqs[c].offset;
2342 if (c_offset < b_offset) {
2344 b_offset = c_offset;
2347 if (a_offset <= b_offset)
2349 tmp = heap->reqs[a];
2350 heap->reqs[a] = heap->reqs[b];
2351 heap->reqs[b] = tmp;
2358 read_CE(struct archive_read *a, struct iso9660 *iso9660)
2360 struct read_ce_queue *heap;
2361 const unsigned char *b, *p, *end;
2362 struct file_info *file;
2366 /* Read data which RRIP "CE" extension points. */
2367 heap = &(iso9660->read_ce_req);
2368 step = iso9660->logical_block_size;
2370 heap->reqs[0].offset == iso9660->current_position) {
2371 b = __archive_read_ahead(a, step, NULL);
2373 archive_set_error(&a->archive,
2375 "Failed to read full block when scanning "
2376 "ISO9660 directory list");
2377 return (ARCHIVE_FATAL);
2380 file = heap->reqs[0].file;
2381 if (file->ce_offset + file->ce_size > step) {
2382 archive_set_error(&a->archive,
2383 ARCHIVE_ERRNO_FILE_FORMAT,
2384 "Malformed CE information");
2385 return (ARCHIVE_FATAL);
2387 p = b + file->ce_offset;
2388 end = p + file->ce_size;
2390 r = parse_rockridge(a, file, p, end);
2391 if (r != ARCHIVE_OK)
2392 return (ARCHIVE_FATAL);
2393 } while (heap->cnt &&
2394 heap->reqs[0].offset == iso9660->current_position);
2395 /* NOTE: Do not move this consume's code to fron of
2396 * do-while loop. Registration of nested CE extension
2397 * might cause error because of current position. */
2398 __archive_read_consume(a, step);
2399 iso9660->current_position += step;
2401 return (ARCHIVE_OK);
2405 parse_rockridge_NM1(struct file_info *file,
2406 const unsigned char *data, int data_length)
2408 if (!file->name_continues)
2409 archive_string_empty(&file->name);
2410 file->name_continues = 0;
2411 if (data_length < 1)
2414 * NM version 1 extension comprises:
2415 * 1 byte flag, value is one of:
2416 * = 0: remainder is name
2417 * = 1: remainder is name, next NM entry continues name
2420 * = 32: Implementation specific
2421 * All other values are reserved.
2425 if (data_length < 2)
2427 archive_strncat(&file->name,
2428 (const char *)data + 1, data_length - 1);
2431 if (data_length < 2)
2433 archive_strncat(&file->name,
2434 (const char *)data + 1, data_length - 1);
2435 file->name_continues = 1;
2438 archive_strcat(&file->name, ".");
2441 archive_strcat(&file->name, "..");
2450 parse_rockridge_TF1(struct file_info *file, const unsigned char *data,
2455 * TF extension comprises:
2457 * create time (optional)
2458 * modify time (optional)
2459 * access time (optional)
2460 * attribute time (optional)
2461 * Time format and presence of fields
2462 * is controlled by flag bits.
2464 if (data_length < 1)
2470 /* Use 17-byte time format. */
2471 if ((flag & 1) && data_length >= 17) {
2473 file->birthtime_is_set = 1;
2474 file->birthtime = isodate17(data);
2478 if ((flag & 2) && data_length >= 17) {
2480 file->mtime = isodate17(data);
2484 if ((flag & 4) && data_length >= 17) {
2486 file->atime = isodate17(data);
2490 if ((flag & 8) && data_length >= 17) {
2491 /* Attribute change time. */
2492 file->ctime = isodate17(data);
2495 /* Use 7-byte time format. */
2496 if ((flag & 1) && data_length >= 7) {
2498 file->birthtime_is_set = 1;
2499 file->birthtime = isodate7(data);
2503 if ((flag & 2) && data_length >= 7) {
2505 file->mtime = isodate7(data);
2509 if ((flag & 4) && data_length >= 7) {
2511 file->atime = isodate7(data);
2515 if ((flag & 8) && data_length >= 7) {
2516 /* Attribute change time. */
2517 file->ctime = isodate7(data);
2523 parse_rockridge_SL1(struct file_info *file, const unsigned char *data,
2526 const char *separator = "";
2528 if (!file->symlink_continues || file->symlink.length < 1)
2529 archive_string_empty(&file->symlink);
2530 else if (!file->symlink_continues &&
2531 file->symlink.s[file->symlink.length - 1] != '/')
2533 file->symlink_continues = 0;
2536 * Defined flag values:
2537 * 0: This is the last SL record for this symbolic link
2538 * 1: this symbolic link field continues in next SL entry
2539 * All other values are reserved.
2541 if (data_length < 1)
2547 file->symlink_continues = 1;
2552 ++data; /* Skip flag byte. */
2556 * SL extension body stores "components".
2557 * Basically, this is a complicated way of storing
2558 * a POSIX path. It also interferes with using
2559 * symlinks for storing non-path data. <sigh>
2561 * Each component is 2 bytes (flag and length)
2562 * possibly followed by name data.
2564 while (data_length >= 2) {
2565 unsigned char flag = *data++;
2566 unsigned char nlen = *data++;
2569 archive_strcat(&file->symlink, separator);
2573 case 0: /* Usual case, this is text. */
2574 if (data_length < nlen)
2576 archive_strncat(&file->symlink,
2577 (const char *)data, nlen);
2579 case 0x01: /* Text continues in next component. */
2580 if (data_length < nlen)
2582 archive_strncat(&file->symlink,
2583 (const char *)data, nlen);
2586 case 0x02: /* Current dir. */
2587 archive_strcat(&file->symlink, ".");
2589 case 0x04: /* Parent dir. */
2590 archive_strcat(&file->symlink, "..");
2592 case 0x08: /* Root of filesystem. */
2593 archive_strcat(&file->symlink, "/");
2596 case 0x10: /* Undefined (historically "volume root" */
2597 archive_string_empty(&file->symlink);
2598 archive_strcat(&file->symlink, "ROOT");
2600 case 0x20: /* Undefined (historically "hostname") */
2601 archive_strcat(&file->symlink, "hostname");
2604 /* TODO: issue a warning ? */
2608 data_length -= nlen;
2613 parse_rockridge_ZF1(struct file_info *file, const unsigned char *data,
2617 if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) {
2620 file->pz_log2_bs = data[3];
2621 file->pz_uncompressed_size = archive_le32dec(&data[4]);
2626 register_file(struct iso9660 *iso9660, struct file_info *file)
2629 file->use_next = iso9660->use_files;
2630 iso9660->use_files = file;
2634 release_files(struct iso9660 *iso9660)
2636 struct content *con, *connext;
2637 struct file_info *file;
2639 file = iso9660->use_files;
2640 while (file != NULL) {
2641 struct file_info *next = file->use_next;
2643 archive_string_free(&file->name);
2644 archive_string_free(&file->symlink);
2645 free(file->utf16be_name);
2646 con = file->contents.first;
2647 while (con != NULL) {
2648 connext = con->next;
2658 next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
2659 struct file_info **pfile)
2661 struct file_info *file;
2664 r = next_cache_entry(a, iso9660, pfile);
2665 if (r != ARCHIVE_OK)
2669 /* Don't waste time seeking for zero-length bodies. */
2670 if (file->size == 0)
2671 file->offset = iso9660->current_position;
2673 /* flush any remaining bytes from the last round to ensure
2674 * we're positioned */
2675 if (iso9660->entry_bytes_unconsumed) {
2676 __archive_read_consume(a, iso9660->entry_bytes_unconsumed);
2677 iso9660->entry_bytes_unconsumed = 0;
2680 /* Seek forward to the start of the entry. */
2681 if (iso9660->current_position < file->offset) {
2684 step = file->offset - iso9660->current_position;
2685 step = __archive_read_consume(a, step);
2688 iso9660->current_position = file->offset;
2691 /* We found body of file; handle it now. */
2692 return (ARCHIVE_OK);
2696 next_cache_entry(struct archive_read *a, struct iso9660 *iso9660,
2697 struct file_info **pfile)
2699 struct file_info *file;
2701 struct file_info *first;
2702 struct file_info **last;
2707 file = cache_get_entry(iso9660);
2710 return (ARCHIVE_OK);
2714 struct file_info *re, *d;
2716 *pfile = file = next_entry(iso9660);
2719 * If directory entries all which are descendant of
2720 * rr_moved are stil remaning, expose their.
2722 if (iso9660->re_files.first != NULL &&
2723 iso9660->rr_moved != NULL &&
2724 iso9660->rr_moved->rr_moved_has_re_only)
2725 /* Expose "rr_moved" entry. */
2726 cache_add_entry(iso9660, iso9660->rr_moved);
2727 while ((re = re_get_entry(iso9660)) != NULL) {
2728 /* Expose its descendant dirs. */
2729 while ((d = rede_get_entry(re)) != NULL)
2730 cache_add_entry(iso9660, d);
2732 if (iso9660->cache_files.first != NULL)
2733 return (next_cache_entry(a, iso9660, pfile));
2734 return (ARCHIVE_EOF);
2737 if (file->cl_offset) {
2738 struct file_info *first_re = NULL;
2742 * Find "RE" dir for the current file, which
2745 while ((re = re_get_entry(iso9660))
2747 if (first_re == NULL)
2749 if (re->offset == file->cl_offset) {
2750 re->parent->subdirs--;
2751 re->parent = file->parent;
2753 if (re->parent->re_descendant) {
2755 re->re_descendant = 1;
2756 if (rede_add_entry(re) < 0)
2758 /* Move a list of descendants
2759 * to a new ancestor. */
2760 while ((d = rede_get_entry(
2762 if (rede_add_entry(d)
2767 /* Replace the current file
2770 /* Expose its descendant */
2771 while ((d = rede_get_entry(
2777 re_add_entry(iso9660, re);
2781 * Do not expose this at this time
2782 * because we have not gotten its full-path
2787 } else if ((file->mode & AE_IFMT) == AE_IFDIR) {
2790 /* Read file entries in this dir. */
2791 r = read_children(a, file);
2792 if (r != ARCHIVE_OK)
2796 * Handle a special dir of Rockridge extensions,
2799 if (file->rr_moved) {
2801 * If this has only the subdirectories which
2802 * have "RE" flags, do not expose at this time.
2804 if (file->rr_moved_has_re_only)
2806 /* Otherwise expose "rr_moved" entry. */
2807 } else if (file->re) {
2809 * Do not expose this at this time
2810 * because we have not gotten its full-path
2813 re_add_entry(iso9660, file);
2815 } else if (file->re_descendant) {
2817 * If the top level "RE" entry of this entry
2818 * is not exposed, we, accordingly, should not
2819 * expose this entry at this time because
2820 * we cannot make its proper full-path name.
2822 if (rede_add_entry(file) == 0)
2824 /* Otherwise we can expose this entry because
2825 * it seems its top level "RE" has already been
2832 if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1)
2833 return (ARCHIVE_OK);
2836 number = file->number;
2837 iso9660->cache_files.first = NULL;
2838 iso9660->cache_files.last = &(iso9660->cache_files.first);
2839 empty_files.first = NULL;
2840 empty_files.last = &empty_files.first;
2841 /* Collect files which has the same file serial number.
2842 * Peek pending_files so that file which number is different
2843 * is not put bak. */
2844 while (iso9660->pending_files.used > 0 &&
2845 (iso9660->pending_files.files[0]->number == -1 ||
2846 iso9660->pending_files.files[0]->number == number)) {
2847 if (file->number == -1) {
2848 /* This file has the same offset
2849 * but it's wrong offset which empty files
2850 * and symlink files have.
2851 * NOTE: This wrong offse was recorded by
2852 * old mkisofs utility. If ISO images is
2853 * created by latest mkisofs, this does not
2857 *empty_files.last = file;
2858 empty_files.last = &(file->next);
2861 cache_add_entry(iso9660, file);
2863 file = next_entry(iso9660);
2868 return ((file == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2870 if (file->number == -1) {
2872 *empty_files.last = file;
2873 empty_files.last = &(file->next);
2876 cache_add_entry(iso9660, file);
2880 /* The count is the same as number of hardlink,
2881 * so much so that each nlinks of files in cache_file
2882 * is overwritten by value of the count.
2884 for (file = iso9660->cache_files.first;
2885 file != NULL; file = file->next)
2886 file->nlinks = count;
2888 /* If there are empty files, that files are added
2889 * to the tail of the cache_files. */
2890 if (empty_files.first != NULL) {
2891 *iso9660->cache_files.last = empty_files.first;
2892 iso9660->cache_files.last = empty_files.last;
2894 *pfile = cache_get_entry(iso9660);
2895 return ((*pfile == NULL)?ARCHIVE_EOF:ARCHIVE_OK);
2898 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2899 "Failed to connect 'CL' pointer to 'RE' rr_moved pointer of"
2900 "Rockridge extensions");
2901 return (ARCHIVE_FATAL);
2905 re_add_entry(struct iso9660 *iso9660, struct file_info *file)
2907 file->re_next = NULL;
2908 *iso9660->re_files.last = file;
2909 iso9660->re_files.last = &(file->re_next);
2912 static inline struct file_info *
2913 re_get_entry(struct iso9660 *iso9660)
2915 struct file_info *file;
2917 if ((file = iso9660->re_files.first) != NULL) {
2918 iso9660->re_files.first = file->re_next;
2919 if (iso9660->re_files.first == NULL)
2920 iso9660->re_files.last =
2921 &(iso9660->re_files.first);
2927 rede_add_entry(struct file_info *file)
2929 struct file_info *re;
2935 while (re != NULL && !re->re)
2940 file->re_next = NULL;
2941 *re->rede_files.last = file;
2942 re->rede_files.last = &(file->re_next);
2946 static inline struct file_info *
2947 rede_get_entry(struct file_info *re)
2949 struct file_info *file;
2951 if ((file = re->rede_files.first) != NULL) {
2952 re->rede_files.first = file->re_next;
2953 if (re->rede_files.first == NULL)
2954 re->rede_files.last =
2955 &(re->rede_files.first);
2961 cache_add_entry(struct iso9660 *iso9660, struct file_info *file)
2964 *iso9660->cache_files.last = file;
2965 iso9660->cache_files.last = &(file->next);
2968 static inline struct file_info *
2969 cache_get_entry(struct iso9660 *iso9660)
2971 struct file_info *file;
2973 if ((file = iso9660->cache_files.first) != NULL) {
2974 iso9660->cache_files.first = file->next;
2975 if (iso9660->cache_files.first == NULL)
2976 iso9660->cache_files.last =
2977 &(iso9660->cache_files.first);
2983 heap_add_entry(struct archive_read *a, struct heap_queue *heap,
2984 struct file_info *file, uint64_t key)
2986 uint64_t file_key, parent_key;
2989 /* Expand our pending files list as necessary. */
2990 if (heap->used >= heap->allocated) {
2991 struct file_info **new_pending_files;
2992 int new_size = heap->allocated * 2;
2994 if (heap->allocated < 1024)
2996 /* Overflow might keep us from growing the list. */
2997 if (new_size <= heap->allocated) {
2998 archive_set_error(&a->archive,
2999 ENOMEM, "Out of memory");
3000 return (ARCHIVE_FATAL);
3002 new_pending_files = (struct file_info **)
3003 malloc(new_size * sizeof(new_pending_files[0]));
3004 if (new_pending_files == NULL) {
3005 archive_set_error(&a->archive,
3006 ENOMEM, "Out of memory");
3007 return (ARCHIVE_FATAL);
3009 memcpy(new_pending_files, heap->files,
3010 heap->allocated * sizeof(new_pending_files[0]));
3011 if (heap->files != NULL)
3013 heap->files = new_pending_files;
3014 heap->allocated = new_size;
3017 file_key = file->key = key;
3020 * Start with hole at end, walk it up tree to find insertion point.
3022 hole = heap->used++;
3024 parent = (hole - 1)/2;
3025 parent_key = heap->files[parent]->key;
3026 if (file_key >= parent_key) {
3027 heap->files[hole] = file;
3028 return (ARCHIVE_OK);
3030 /* Move parent into hole <==> move hole up tree. */
3031 heap->files[hole] = heap->files[parent];
3034 heap->files[0] = file;
3036 return (ARCHIVE_OK);
3039 static struct file_info *
3040 heap_get_entry(struct heap_queue *heap)
3042 uint64_t a_key, b_key, c_key;
3044 struct file_info *r, *tmp;
3050 * The first file in the list is the earliest; we'll return this.
3055 * Move the last item in the heap to the root of the tree
3057 heap->files[0] = heap->files[--(heap->used)];
3060 * Rebalance the heap.
3062 a = 0; /* Starting element and its heap key */
3063 a_key = heap->files[a]->key;
3065 b = a + a + 1; /* First child */
3066 if (b >= heap->used)
3068 b_key = heap->files[b]->key;
3069 c = b + 1; /* Use second child if it is smaller. */
3070 if (c < heap->used) {
3071 c_key = heap->files[c]->key;
3072 if (c_key < b_key) {
3079 tmp = heap->files[a];
3080 heap->files[a] = heap->files[b];
3081 heap->files[b] = tmp;
3087 toi(const void *p, int n)
3089 const unsigned char *v = (const unsigned char *)p;
3091 return v[0] + 256 * toi(v + 1, n - 1);
3098 isodate7(const unsigned char *v)
3102 memset(&tm, 0, sizeof(tm));
3104 tm.tm_mon = v[1] - 1;
3109 /* v[6] is the signed timezone offset, in 1/4-hour increments. */
3110 offset = ((const signed char *)v)[6];
3111 if (offset > -48 && offset < 52) {
3112 tm.tm_hour -= offset / 4;
3113 tm.tm_min -= (offset % 4) * 15;
3115 return (time_from_tm(&tm));
3119 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 return (time_from_tm(&tm));
3142 time_from_tm(struct tm *t)
3145 /* Use platform timegm() if available. */
3147 #elif HAVE__MKGMTIME64
3148 return (_mkgmtime64(t));
3150 /* Else use direct calculation using POSIX assumptions. */
3151 /* First, fix up tm_yday based on the year/month/day. */
3153 /* Then we can compute timegm() from first principles. */
3154 return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
3155 + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000
3156 + ((t->tm_year - 69) / 4) * 86400 -
3157 ((t->tm_year - 1) / 100) * 86400
3158 + ((t->tm_year + 299) / 400) * 86400);
3163 build_pathname(struct archive_string *as, struct file_info *file)
3165 if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) {
3166 build_pathname(as, file->parent);
3167 archive_strcat(as, "/");
3169 if (archive_strlen(&file->name) == 0)
3170 archive_strcat(as, ".");
3172 archive_string_concat(as, &file->name);
3177 build_pathname_utf16be(unsigned char *p, size_t max, size_t *len,
3178 struct file_info *file)
3180 if (file->parent != NULL && file->parent->utf16be_bytes > 0) {
3181 if (build_pathname_utf16be(p, max, len, file->parent) != 0)
3187 if (file->utf16be_bytes == 0) {
3189 return (-1);/* Path is too long! */
3194 if (*len + file->utf16be_bytes > max)
3195 return (-1);/* Path is too long! */
3196 memcpy(p + *len, file->utf16be_name, file->utf16be_bytes);
3197 *len += file->utf16be_bytes;
3204 dump_isodirrec(FILE *out, const unsigned char *isodirrec)
3206 fprintf(out, " l %d,",
3207 toi(isodirrec + DR_length_offset, DR_length_size));
3208 fprintf(out, " a %d,",
3209 toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size));
3210 fprintf(out, " ext 0x%x,",
3211 toi(isodirrec + DR_extent_offset, DR_extent_size));
3212 fprintf(out, " s %d,",
3213 toi(isodirrec + DR_size_offset, DR_extent_size));
3214 fprintf(out, " f 0x%x,",
3215 toi(isodirrec + DR_flags_offset, DR_flags_size));
3216 fprintf(out, " u %d,",
3217 toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size));
3218 fprintf(out, " ilv %d,",
3219 toi(isodirrec + DR_interleave_offset, DR_interleave_size));
3220 fprintf(out, " seq %d,",
3221 toi(isodirrec + DR_volume_sequence_number_offset, DR_volume_sequence_number_size));
3222 fprintf(out, " nl %d:",
3223 toi(isodirrec + DR_name_len_offset, DR_name_len_size));
3224 fprintf(out, " `%.*s'",
3225 toi(isodirrec + DR_name_len_offset, DR_name_len_size), isodirrec + DR_name_offset);