2 * Copyright (c) 2003-2007 Tim Kientzle
3 * Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se>
4 * Copyright (c) 2009 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_private.h"
51 #include "archive_read_private.h"
52 #include "archive_string.h"
55 * An overview of ISO 9660 format:
57 * Each disk is laid out as follows:
58 * * 32k reserved for private use
59 * * Volume descriptor table. Each volume descriptor
60 * is 2k and specifies basic format information.
61 * The "Primary Volume Descriptor" (PVD) is defined by the
62 * standard and should always be present; other volume
63 * descriptors include various vendor-specific extensions.
64 * * Files and directories. Each file/dir is specified by
65 * an "extent" (starting sector and length in bytes).
66 * Dirs are just files with directory records packed one
67 * after another. The PVD contains a single dir entry
68 * specifying the location of the root directory. Everything
69 * else follows from there.
71 * This module works by first reading the volume descriptors, then
72 * building a list of directory entries, sorted by starting
73 * sector. At each step, I look for the earliest dir entry that
74 * hasn't yet been read, seek forward to that location and read
75 * that entry. If it's a dir, I slurp in the new dir entries and
76 * add them to the heap; if it's a regular file, I return the
77 * corresponding archive_entry and wait for the client to request
78 * the file body. This strategy allows us to read most compliant
79 * CDs with a single pass through the data, as required by libarchive.
81 #define LOGICAL_BLOCK_SIZE 2048
82 #define SYSTEM_AREA_BLOCK 16
84 /* Structure of on-disk primary volume descriptor. */
85 #define PVD_type_offset 0
86 #define PVD_type_size 1
87 #define PVD_id_offset (PVD_type_offset + PVD_type_size)
89 #define PVD_version_offset (PVD_id_offset + PVD_id_size)
90 #define PVD_version_size 1
91 #define PVD_reserved1_offset (PVD_version_offset + PVD_version_size)
92 #define PVD_reserved1_size 1
93 #define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size)
94 #define PVD_system_id_size 32
95 #define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size)
96 #define PVD_volume_id_size 32
97 #define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size)
98 #define PVD_reserved2_size 8
99 #define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size)
100 #define PVD_volume_space_size_size 8
101 #define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size)
102 #define PVD_reserved3_size 32
103 #define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size)
104 #define PVD_volume_set_size_size 4
105 #define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size)
106 #define PVD_volume_sequence_number_size 4
107 #define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size)
108 #define PVD_logical_block_size_size 4
109 #define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size)
110 #define PVD_path_table_size_size 8
111 #define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size)
112 #define PVD_type_1_path_table_size 4
113 #define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size)
114 #define PVD_opt_type_1_path_table_size 4
115 #define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size)
116 #define PVD_type_m_path_table_size 4
117 #define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size)
118 #define PVD_opt_type_m_path_table_size 4
119 #define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size)
120 #define PVD_root_directory_record_size 34
121 #define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size)
122 #define PVD_volume_set_id_size 128
123 #define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size)
124 #define PVD_publisher_id_size 128
125 #define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size)
126 #define PVD_preparer_id_size 128
127 #define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size)
128 #define PVD_application_id_size 128
129 #define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size)
130 #define PVD_copyright_file_id_size 37
131 #define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size)
132 #define PVD_abstract_file_id_size 37
133 #define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size)
134 #define PVD_bibliographic_file_id_size 37
135 #define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size)
136 #define PVD_creation_date_size 17
137 #define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size)
138 #define PVD_modification_date_size 17
139 #define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size)
140 #define PVD_expiration_date_size 17
141 #define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size)
142 #define PVD_effective_date_size 17
143 #define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size)
144 #define PVD_file_structure_version_size 1
145 #define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size)
146 #define PVD_reserved4_size 1
147 #define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size)
148 #define PVD_application_data_size 512
149 #define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size)
150 #define PVD_reserved5_size (2048 - PVD_reserved5_offset)
152 /* TODO: It would make future maintenance easier to just hardcode the
153 * above values. In particular, ECMA119 states the offsets as part of
154 * the standard. That would eliminate the need for the following check.*/
155 #if PVD_reserved5_offset != 1395
156 #error PVD offset and size definitions are wrong.
160 /* Structure of optional on-disk supplementary volume descriptor. */
161 #define SVD_type_offset 0
162 #define SVD_type_size 1
163 #define SVD_id_offset (SVD_type_offset + SVD_type_size)
164 #define SVD_id_size 5
165 #define SVD_version_offset (SVD_id_offset + SVD_id_size)
166 #define SVD_version_size 1
168 #define SVD_reserved1_offset 72
169 #define SVD_reserved1_size 8
170 #define SVD_volume_space_size_offset 80
171 #define SVD_volume_space_size_size 8
172 #define SVD_escape_sequences_offset (SVD_volume_space_size_offset + SVD_volume_space_size_size)
173 #define SVD_escape_sequences_size 32
175 #define SVD_logical_block_size_offset 128
176 #define SVD_logical_block_size_size 4
177 #define SVD_type_L_path_table_offset 140
178 #define SVD_type_M_path_table_offset 148
180 #define SVD_root_directory_record_offset 156
181 #define SVD_root_directory_record_size 34
182 #define SVD_file_structure_version_offset 881
183 #define SVD_reserved2_offset 882
184 #define SVD_reserved2_size 1
185 #define SVD_reserved3_offset 1395
186 #define SVD_reserved3_size 653
188 /* FIXME: validate correctness of last SVD entry offset. */
190 /* Structure of an on-disk directory record. */
191 /* Note: ISO9660 stores each multi-byte integer twice, once in
192 * each byte order. The sizes here are the size of just one
193 * of the two integers. (This is why the offset of a field isn't
194 * the same as the offset+size of the previous field.) */
195 #define DR_length_offset 0
196 #define DR_length_size 1
197 #define DR_ext_attr_length_offset 1
198 #define DR_ext_attr_length_size 1
199 #define DR_extent_offset 2
200 #define DR_extent_size 4
201 #define DR_size_offset 10
202 #define DR_size_size 4
203 #define DR_date_offset 18
204 #define DR_date_size 7
205 #define DR_flags_offset 25
206 #define DR_flags_size 1
207 #define DR_file_unit_size_offset 26
208 #define DR_file_unit_size_size 1
209 #define DR_interleave_offset 27
210 #define DR_interleave_size 1
211 #define DR_volume_sequence_number_offset 28
212 #define DR_volume_sequence_number_size 2
213 #define DR_name_len_offset 32
214 #define DR_name_len_size 1
215 #define DR_name_offset 33
218 static const unsigned char zisofs_magic[8] = {
219 0x37, 0xE4, 0x53, 0x96, 0xC9, 0xDB, 0xD6, 0x07
223 /* Set 1 if this file compressed by paged zlib */
225 int pz_log2_bs; /* Log2 of block size */
226 uint64_t pz_uncompressed_size;
229 unsigned char *uncompressed_buffer;
230 size_t uncompressed_buffer_size;
233 unsigned char header[16];
236 unsigned char *block_pointers;
237 size_t block_pointers_alloc;
238 size_t block_pointers_size;
239 size_t block_pointers_avail;
241 uint32_t block_avail;
248 /* Set 1 if this file compressed by paged zlib */
254 uint64_t offset;/* Offset on disk. */
255 uint64_t size; /* File size in bytes. */
256 struct content *next;
259 /* In-memory storage for a directory record. */
261 struct file_info *use_next;
262 struct file_info *parent;
263 struct file_info *next;
265 uint64_t key; /* Heap Key. */
266 uint64_t offset; /* Offset on disk. */
267 uint64_t size; /* File size in bytes. */
268 uint32_t ce_offset; /* Offset of CE. */
269 uint32_t ce_size; /* Size of CE. */
270 char re; /* Having RRIP "RE" extension. */
271 uint64_t cl_offset; /* Having RRIP "CL" extension. */
272 int birthtime_is_set;
273 time_t birthtime; /* File created time. */
274 time_t mtime; /* File last modified time. */
275 time_t atime; /* File last accessed time. */
276 time_t ctime; /* File attribute change time. */
277 uint64_t rdev; /* Device number. */
283 struct archive_string name; /* Pathname */
284 char name_continues; /* Non-zero if name continues */
285 struct archive_string symlink;
286 char symlink_continues; /* Non-zero if link continues */
287 /* Set 1 if this file compressed by paged zlib(zisofs) */
289 int pz_log2_bs; /* Log2 of block size */
290 uint64_t pz_uncompressed_size;
291 /* Set 1 if this file is multi extent. */
294 struct content *first;
295 struct content **last;
301 struct file_info **files;
308 #define ISO9660_MAGIC 0x96609660
310 int opt_support_joliet;
311 int opt_support_rockridge;
313 struct archive_string pathname;
314 char seenRockridge; /* Set true if RR extensions are used. */
315 char seenSUSP; /* Set true if SUSP is beging used. */
318 unsigned char suspOffset;
319 struct file_info *rr_moved;
320 struct heap_queue re_dirs;
321 struct heap_queue cl_files;
322 struct read_ce_queue {
324 uint64_t offset;/* Offset of CE on disk. */
325 struct file_info *file;
331 int64_t previous_number;
332 struct archive_string previous_pathname;
334 struct file_info *use_files;
335 struct heap_queue pending_files;
337 struct file_info *first;
338 struct file_info **last;
341 uint64_t current_position;
342 ssize_t logical_block_size;
343 uint64_t volume_size; /* Total size of volume in bytes. */
344 int32_t volume_block;/* Total size of volume in logical blocks. */
347 int location; /* Location of Extent. */
351 off_t entry_sparse_offset;
352 int64_t entry_bytes_remaining;
353 struct zisofs entry_zisofs;
354 struct content *entry_content;
357 static int archive_read_format_iso9660_bid(struct archive_read *);
358 static int archive_read_format_iso9660_options(struct archive_read *,
359 const char *, const char *);
360 static int archive_read_format_iso9660_cleanup(struct archive_read *);
361 static int archive_read_format_iso9660_read_data(struct archive_read *,
362 const void **, size_t *, off_t *);
363 static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
364 static int archive_read_format_iso9660_read_header(struct archive_read *,
365 struct archive_entry *);
366 static const char *build_pathname(struct archive_string *, struct file_info *);
368 static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
370 static time_t time_from_tm(struct tm *);
371 static time_t isodate17(const unsigned char *);
372 static time_t isodate7(const unsigned char *);
373 static int isBootRecord(struct iso9660 *, const unsigned char *);
374 static int isVolumePartition(struct iso9660 *, const unsigned char *);
375 static int isVDSetTerminator(struct iso9660 *, const unsigned char *);
376 static int isJolietSVD(struct iso9660 *, const unsigned char *);
377 static int isSVD(struct iso9660 *, const unsigned char *);
378 static int isEVD(struct iso9660 *, const unsigned char *);
379 static int isPVD(struct iso9660 *, const unsigned char *);
380 static struct file_info *next_cache_entry(struct iso9660 *iso9660);
381 static int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
382 struct file_info **pfile);
383 static struct file_info *
384 parse_file_info(struct archive_read *a,
385 struct file_info *parent, const unsigned char *isodirrec);
386 static int parse_rockridge(struct archive_read *a,
387 struct file_info *file, const unsigned char *start,
388 const unsigned char *end);
389 static int register_CE(struct archive_read *a, int32_t location,
390 struct file_info *file);
391 static int read_CE(struct archive_read *a, struct iso9660 *iso9660);
392 static void parse_rockridge_NM1(struct file_info *,
393 const unsigned char *, int);
394 static void parse_rockridge_SL1(struct file_info *,
395 const unsigned char *, int);
396 static void parse_rockridge_TF1(struct file_info *,
397 const unsigned char *, int);
398 static void parse_rockridge_ZF1(struct file_info *,
399 const unsigned char *, int);
400 static void register_file(struct iso9660 *, struct file_info *);
401 static void release_files(struct iso9660 *);
402 static unsigned toi(const void *p, int n);
403 static inline void cache_add_entry(struct iso9660 *iso9660,
404 struct file_info *file);
405 static inline void cache_add_to_next_of_parent(struct iso9660 *iso9660,
406 struct file_info *file);
407 static inline struct file_info *cache_get_entry(struct iso9660 *iso9660);
408 static void heap_add_entry(struct heap_queue *heap,
409 struct file_info *file, uint64_t key);
410 static struct file_info *heap_get_entry(struct heap_queue *heap);
412 #define add_entry(iso9660, file) \
413 heap_add_entry(&((iso9660)->pending_files), file, file->offset)
414 #define next_entry(iso9660) \
415 heap_get_entry(&((iso9660)->pending_files))
418 archive_read_support_format_iso9660(struct archive *_a)
420 struct archive_read *a = (struct archive_read *)_a;
421 struct iso9660 *iso9660;
424 iso9660 = (struct iso9660 *)malloc(sizeof(*iso9660));
425 if (iso9660 == NULL) {
426 archive_set_error(&a->archive, ENOMEM, "Can't allocate iso9660 data");
427 return (ARCHIVE_FATAL);
429 memset(iso9660, 0, sizeof(*iso9660));
430 iso9660->magic = ISO9660_MAGIC;
431 iso9660->cache_files.first = NULL;
432 iso9660->cache_files.last = &(iso9660->cache_files.first);
433 /* Enable to support Joliet extensions by default. */
434 iso9660->opt_support_joliet = 1;
435 /* Enable to support Rock Ridge extensions by default. */
436 iso9660->opt_support_rockridge = 1;
438 r = __archive_read_register_format(a,
441 archive_read_format_iso9660_bid,
442 archive_read_format_iso9660_options,
443 archive_read_format_iso9660_read_header,
444 archive_read_format_iso9660_read_data,
445 archive_read_format_iso9660_read_data_skip,
446 archive_read_format_iso9660_cleanup);
448 if (r != ARCHIVE_OK) {
457 archive_read_format_iso9660_bid(struct archive_read *a)
459 struct iso9660 *iso9660;
462 const unsigned char *p;
465 iso9660 = (struct iso9660 *)(a->format->data);
468 * Skip the first 32k (reserved area) and get the first
469 * 8 sectors of the volume descriptor table. Of course,
470 * if the I/O layer gives us more, we'll take it.
472 #define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE)
473 h = __archive_read_ahead(a,
474 RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE,
478 p = (const unsigned char *)h;
480 /* Skip the reserved area. */
481 bytes_read -= RESERVED_AREA;
484 /* Check each volume descriptor. */
486 for (; bytes_read > LOGICAL_BLOCK_SIZE;
487 bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) {
488 /* Do not handle undefined Volume Descriptor Type. */
489 if (p[0] >= 4 && p[0] <= 254)
491 /* Standard Identifier must be "CD001" */
492 if (memcmp(p + 1, "CD001", 5) != 0)
494 if (!iso9660->primary.location) {
495 if (isPVD(iso9660, p))
498 if (!iso9660->joliet.location) {
499 if (isJolietSVD(iso9660, p))
502 if (isBootRecord(iso9660, p))
504 if (isEVD(iso9660, p))
506 if (isSVD(iso9660, p))
508 if (isVolumePartition(iso9660, p))
510 if (isVDSetTerminator(iso9660, p)) {
517 * ISO 9660 format must have Primary Volume Descriptor and
518 * Volume Descriptor Set Terminator.
520 if (seenTerminator && iso9660->primary.location > 16)
523 /* We didn't find a valid PVD; return a bid of zero. */
528 archive_read_format_iso9660_options(struct archive_read *a,
529 const char *key, const char *val)
531 struct iso9660 *iso9660;
533 iso9660 = (struct iso9660 *)(a->format->data);
535 if (strcmp(key, "joliet") == 0) {
536 if (val == NULL || strcmp(val, "off") == 0 ||
537 strcmp(val, "ignore") == 0 ||
538 strcmp(val, "disable") == 0 ||
539 strcmp(val, "0") == 0)
540 iso9660->opt_support_joliet = 0;
542 iso9660->opt_support_joliet = 1;
545 if (strcmp(key, "rockridge") == 0 ||
546 strcmp(key, "Rockridge") == 0) {
547 iso9660->opt_support_rockridge = val != NULL;
551 /* Note: The "warn" return is just to inform the options
552 * supervisor that we didn't handle it. It will generate
553 * a suitable error if noone used this option. */
554 return (ARCHIVE_WARN);
558 isBootRecord(struct iso9660 *iso9660, const unsigned char *h)
560 (void)iso9660; /* UNUSED */
562 /* Type of the Volume Descriptor Boot Record must be 0. */
566 /* Volume Descriptor Version must be 1. */
574 isVolumePartition(struct iso9660 *iso9660, const unsigned char *h)
578 /* Type of the Volume Partition Descriptor must be 3. */
582 /* Volume Descriptor Version must be 1. */
589 location = archive_le32dec(h + 72);
590 if (location <= SYSTEM_AREA_BLOCK ||
591 location >= iso9660->volume_block)
593 if ((uint32_t)location != archive_be32dec(h + 76))
600 isVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h)
604 (void)iso9660; /* UNUSED */
606 /* Type of the Volume Descriptor Set Terminator must be 255. */
610 /* Volume Descriptor Version must be 1. */
614 /* Reserved field must be 0. */
615 for (i = 7; i < 2048; ++i)
623 isJolietSVD(struct iso9660 *iso9660, const unsigned char *h)
625 const unsigned char *p;
626 ssize_t logical_block_size;
627 int32_t volume_block;
629 /* Check if current sector is a kind of Supplementary Volume
631 if (!isSVD(iso9660, h))
634 /* FIXME: do more validations according to joliet spec. */
636 /* check if this SVD contains joliet extension! */
637 p = h + SVD_escape_sequences_offset;
638 /* N.B. Joliet spec says p[1] == '\\', but.... */
639 if (p[0] == '%' && p[1] == '/') {
644 else if (p[2] == 'C')
646 else if (p[2] == 'E')
648 else /* not joliet */
651 iso9660->seenJoliet = level;
653 } else /* not joliet */
657 archive_le16dec(h + SVD_logical_block_size_offset);
658 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
660 iso9660->logical_block_size = logical_block_size;
661 iso9660->volume_block = volume_block;
662 iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
663 /* Read Root Directory Record in Volume Descriptor. */
664 p = h + SVD_root_directory_record_offset;
665 iso9660->joliet.location = archive_le32dec(p + DR_extent_offset);
666 iso9660->joliet.size = archive_le32dec(p + DR_size_offset);
672 isSVD(struct iso9660 *iso9660, const unsigned char *h)
674 const unsigned char *p;
675 ssize_t logical_block_size;
676 int32_t volume_block;
680 (void)iso9660; /* UNUSED */
682 /* Type 2 means it's a SVD. */
683 if (h[SVD_type_offset] != 2)
686 /* Reserved field must be 0. */
687 for (i = 0; i < SVD_reserved1_size; ++i)
688 if (h[SVD_reserved1_offset + i] != 0)
690 for (i = 0; i < SVD_reserved2_size; ++i)
691 if (h[SVD_reserved2_offset + i] != 0)
693 for (i = 0; i < SVD_reserved3_size; ++i)
694 if (h[SVD_reserved3_offset + i] != 0)
697 /* File structure version must be 1 for ISO9660/ECMA119. */
698 if (h[SVD_file_structure_version_offset] != 1)
702 archive_le16dec(h + SVD_logical_block_size_offset);
703 if (logical_block_size <= 0)
706 volume_block = archive_le32dec(h + SVD_volume_space_size_offset);
707 if (volume_block <= SYSTEM_AREA_BLOCK+4)
710 /* Location of Occurrence of Type L Path Table must be
711 * available location,
712 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
713 location = archive_le32dec(h+SVD_type_L_path_table_offset);
714 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
717 /* Location of Occurrence of Type M Path Table must be
718 * available location,
719 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
720 location = archive_be32dec(h+SVD_type_M_path_table_offset);
721 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
724 /* Read Root Directory Record in Volume Descriptor. */
725 p = h + SVD_root_directory_record_offset;
726 if (p[DR_length_offset] != 34)
733 isEVD(struct iso9660 *iso9660, const unsigned char *h)
735 const unsigned char *p;
736 ssize_t logical_block_size;
737 int32_t volume_block;
741 (void)iso9660; /* UNUSED */
743 /* Type of the Enhanced Volume Descriptor must be 2. */
744 if (h[PVD_type_offset] != 2)
747 /* EVD version must be 2. */
748 if (h[PVD_version_offset] != 2)
751 /* Reserved field must be 0. */
752 if (h[PVD_reserved1_offset] != 0)
755 /* Reserved field must be 0. */
756 for (i = 0; i < PVD_reserved2_size; ++i)
757 if (h[PVD_reserved2_offset + i] != 0)
760 /* Reserved field must be 0. */
761 for (i = 0; i < PVD_reserved3_size; ++i)
762 if (h[PVD_reserved3_offset + i] != 0)
765 /* Logical block size must be > 0. */
766 /* I've looked at Ecma 119 and can't find any stronger
767 * restriction on this field. */
769 archive_le16dec(h + PVD_logical_block_size_offset);
770 if (logical_block_size <= 0)
774 archive_le32dec(h + PVD_volume_space_size_offset);
775 if (volume_block <= SYSTEM_AREA_BLOCK+4)
778 /* File structure version must be 2 for ISO9660:1999. */
779 if (h[PVD_file_structure_version_offset] != 2)
782 /* Location of Occurrence of Type L Path Table must be
783 * available location,
784 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
785 location = archive_le32dec(h+PVD_type_1_path_table_offset);
786 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
789 /* Location of Occurrence of Type M Path Table must be
790 * available location,
791 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
792 location = archive_be32dec(h+PVD_type_m_path_table_offset);
793 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
796 /* Reserved field must be 0. */
797 for (i = 0; i < PVD_reserved4_size; ++i)
798 if (h[PVD_reserved4_offset + i] != 0)
801 /* Reserved field must be 0. */
802 for (i = 0; i < PVD_reserved5_size; ++i)
803 if (h[PVD_reserved5_offset + i] != 0)
806 /* Read Root Directory Record in Volume Descriptor. */
807 p = h + PVD_root_directory_record_offset;
808 if (p[DR_length_offset] != 34)
815 isPVD(struct iso9660 *iso9660, const unsigned char *h)
817 const unsigned char *p;
818 ssize_t logical_block_size;
819 int32_t volume_block;
823 /* Type of the Primary Volume Descriptor must be 1. */
824 if (h[PVD_type_offset] != 1)
827 /* PVD version must be 1. */
828 if (h[PVD_version_offset] != 1)
831 /* Reserved field must be 0. */
832 if (h[PVD_reserved1_offset] != 0)
835 /* Reserved field must be 0. */
836 for (i = 0; i < PVD_reserved2_size; ++i)
837 if (h[PVD_reserved2_offset + i] != 0)
840 /* Reserved field must be 0. */
841 for (i = 0; i < PVD_reserved3_size; ++i)
842 if (h[PVD_reserved3_offset + i] != 0)
845 /* Logical block size must be > 0. */
846 /* I've looked at Ecma 119 and can't find any stronger
847 * restriction on this field. */
849 archive_le16dec(h + PVD_logical_block_size_offset);
850 if (logical_block_size <= 0)
853 volume_block = archive_le32dec(h + PVD_volume_space_size_offset);
854 if (volume_block <= SYSTEM_AREA_BLOCK+4)
857 /* File structure version must be 1 for ISO9660/ECMA119. */
858 if (h[PVD_file_structure_version_offset] != 1)
861 /* Location of Occurrence of Type L Path Table must be
862 * available location,
863 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
864 location = archive_le32dec(h+PVD_type_1_path_table_offset);
865 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
868 /* Location of Occurrence of Type M Path Table must be
869 * available location,
870 * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */
871 location = archive_be32dec(h+PVD_type_m_path_table_offset);
872 if (location <= SYSTEM_AREA_BLOCK+2 || location >= volume_block)
875 /* Reserved field must be 0. */
876 for (i = 0; i < PVD_reserved4_size; ++i)
877 if (h[PVD_reserved4_offset + i] != 0)
880 /* Reserved field must be 0. */
881 for (i = 0; i < PVD_reserved5_size; ++i)
882 if (h[PVD_reserved5_offset + i] != 0)
885 /* XXX TODO: Check other values for sanity; reject more
886 * malformed PVDs. XXX */
888 /* Read Root Directory Record in Volume Descriptor. */
889 p = h + PVD_root_directory_record_offset;
890 if (p[DR_length_offset] != 34)
893 iso9660->logical_block_size = logical_block_size;
894 iso9660->volume_block = volume_block;
895 iso9660->volume_size = logical_block_size * (uint64_t)volume_block;
896 iso9660->primary.location = archive_le32dec(p + DR_extent_offset);
897 iso9660->primary.size = archive_le32dec(p + DR_size_offset);
903 read_children(struct archive_read *a, struct file_info *parent)
905 struct iso9660 *iso9660;
906 const unsigned char *b, *p;
907 struct file_info *multi;
910 iso9660 = (struct iso9660 *)(a->format->data);
911 if (iso9660->current_position > parent->offset) {
912 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
913 "Ignoring out-of-order directory (%s) %jd > %jd",
915 iso9660->current_position,
917 return (ARCHIVE_WARN);
919 if (parent->offset + parent->size > iso9660->volume_size) {
920 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
921 "Directory is beyond end-of-media: %s",
923 return (ARCHIVE_WARN);
925 if (iso9660->current_position < parent->offset) {
928 skipsize = parent->offset - iso9660->current_position;
929 skipsize = __archive_read_skip(a, skipsize);
931 return ((int)skipsize);
932 iso9660->current_position = parent->offset;
935 step = ((parent->size + iso9660->logical_block_size -1) /
936 iso9660->logical_block_size) * iso9660->logical_block_size;
937 b = __archive_read_ahead(a, step, NULL);
939 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
940 "Failed to read full block when scanning "
941 "ISO9660 directory list");
942 return (ARCHIVE_FATAL);
944 __archive_read_consume(a, step);
945 iso9660->current_position += step;
949 b += iso9660->logical_block_size;
950 step -= iso9660->logical_block_size;
951 for (; *p != 0 && p < b && p + *p <= b; p += *p) {
952 struct file_info *child;
954 /* N.B.: these special directory identifiers
955 * are 8 bit "values" even on a
956 * Joliet CD with UCS-2 (16bit) encoding.
959 /* Skip '.' entry. */
960 if (*(p + DR_name_len_offset) == 1
961 && *(p + DR_name_offset) == '\0')
963 /* Skip '..' entry. */
964 if (*(p + DR_name_len_offset) == 1
965 && *(p + DR_name_offset) == '\001')
967 child = parse_file_info(a, parent, p);
969 return (ARCHIVE_FATAL);
970 if (child->cl_offset)
971 heap_add_entry(&(iso9660->cl_files),
972 child, child->cl_offset);
974 if (child->multi_extent || multi != NULL) {
979 multi->contents.first = NULL;
980 multi->contents.last =
981 &(multi->contents.first);
983 con = malloc(sizeof(struct content));
989 return (ARCHIVE_FATAL);
991 con->offset = child->offset;
992 con->size = child->size;
994 *multi->contents.last = con;
995 multi->contents.last = &(con->next);
997 add_entry(iso9660, child);
999 multi->size += child->size;
1000 if (!child->multi_extent)
1004 add_entry(iso9660, child);
1009 /* Read data which recorded by RRIP "CE" extension. */
1010 if (read_CE(a, iso9660) != ARCHIVE_OK)
1011 return (ARCHIVE_FATAL);
1013 return (ARCHIVE_OK);
1017 relocate_dir(struct iso9660 *iso9660, struct file_info *file)
1019 struct file_info *re;
1021 re = heap_get_entry(&(iso9660->re_dirs));
1022 while (re != NULL && re->offset < file->cl_offset) {
1023 /* This case is wrong pattern.
1024 * But dont't reject this directory entry to be robust. */
1025 cache_add_entry(iso9660, re);
1026 re = heap_get_entry(&(iso9660->re_dirs));
1029 /* This case is wrong pattern. */
1031 if (re->offset == file->cl_offset) {
1032 re->parent->subdirs--;
1033 re->parent = file->parent;
1034 re->parent->subdirs++;
1035 cache_add_to_next_of_parent(iso9660, re);
1038 /* This case is wrong pattern. */
1039 heap_add_entry(&(iso9660->re_dirs), re, re->offset);
1044 read_entries(struct archive_read *a)
1046 struct iso9660 *iso9660;
1047 struct file_info *file;
1050 iso9660 = (struct iso9660 *)(a->format->data);
1052 while ((file = next_entry(iso9660)) != NULL &&
1053 (file->mode & AE_IFMT) == AE_IFDIR) {
1054 r = read_children(a, file);
1055 if (r != ARCHIVE_OK)
1058 if (iso9660->seenRockridge &&
1059 file->parent != NULL &&
1060 file->parent->parent == NULL &&
1061 iso9660->rr_moved == NULL &&
1062 (strcmp(file->name.s, "rr_moved") == 0 ||
1063 strcmp(file->name.s, ".rr_moved") == 0)) {
1064 iso9660->rr_moved = file;
1065 } else if (file->re)
1066 heap_add_entry(&(iso9660->re_dirs), file,
1069 cache_add_entry(iso9660, file);
1072 add_entry(iso9660, file);
1074 if (iso9660->rr_moved != NULL) {
1076 * Relocate directory which rr_moved has.
1078 while ((file = heap_get_entry(&(iso9660->cl_files))) != NULL)
1079 relocate_dir(iso9660, file);
1081 /* If rr_moved directory still has children,
1082 * Add rr_moved into pending_files to show
1084 if (iso9660->rr_moved->subdirs) {
1085 cache_add_entry(iso9660, iso9660->rr_moved);
1086 /* If entries which have "RE" extension are still
1087 * remaining(this case is unlikely except ISO image
1088 * is broken), the entries won't be exposed. */
1089 while ((file = heap_get_entry(&(iso9660->re_dirs))) != NULL)
1090 cache_add_entry(iso9660, file);
1092 iso9660->rr_moved->parent->subdirs--;
1095 * In case ISO image is broken. If the name of rr_moved
1096 * directory has been changed by damage, subdirectories
1097 * of rr_moved entry won't be exposed.
1099 while ((file = heap_get_entry(&(iso9660->re_dirs))) != NULL)
1100 cache_add_entry(iso9660, file);
1103 return (ARCHIVE_OK);
1107 archive_read_format_iso9660_read_header(struct archive_read *a,
1108 struct archive_entry *entry)
1110 struct iso9660 *iso9660;
1111 struct file_info *file;
1114 iso9660 = (struct iso9660 *)(a->format->data);
1116 if (!a->archive.archive_format) {
1117 a->archive.archive_format = ARCHIVE_FORMAT_ISO9660;
1118 a->archive.archive_format_name = "ISO9660";
1121 if (iso9660->current_position == 0) {
1127 vd = &(iso9660->primary);
1128 if (!iso9660->opt_support_joliet)
1129 iso9660->seenJoliet = 0;
1130 if (iso9660->seenJoliet &&
1131 vd->location > iso9660->joliet.location)
1132 /* This condition is unlikely; by way of caution. */
1133 vd = &(iso9660->joliet);
1135 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1136 skipsize = __archive_read_skip(a, skipsize);
1138 return ((int)skipsize);
1139 iso9660->current_position = skipsize;
1141 block = __archive_read_ahead(a, vd->size, NULL);
1142 if (block == NULL) {
1143 archive_set_error(&a->archive,
1145 "Failed to read full block when scanning "
1146 "ISO9660 directory list");
1147 return (ARCHIVE_FATAL);
1151 * While reading Root Directory, flag seenJoliet
1152 * must be zero to avoid converting special name
1153 * 0x00(Current Directory) and next byte to UCS2.
1155 seenJoliet = iso9660->seenJoliet;/* Save flag. */
1156 iso9660->seenJoliet = 0;
1157 file = parse_file_info(a, NULL, block);
1159 return (ARCHIVE_FATAL);
1160 iso9660->seenJoliet = seenJoliet;
1161 if (vd == &(iso9660->primary) && iso9660->seenRockridge
1162 && iso9660->seenJoliet)
1164 * If iso image has RockRidge and Joliet,
1165 * we use RockRidge Extensions.
1167 iso9660->seenJoliet = 0;
1168 if (vd == &(iso9660->primary) && !iso9660->seenRockridge
1169 && iso9660->seenJoliet) {
1170 /* Switch reading data from primary to joliet. */
1171 vd = &(iso9660->joliet);
1172 skipsize = LOGICAL_BLOCK_SIZE * vd->location;
1173 skipsize -= iso9660->current_position;
1174 skipsize = __archive_read_skip(a, skipsize);
1176 return ((int)skipsize);
1177 iso9660->current_position += skipsize;
1179 block = __archive_read_ahead(a, vd->size, NULL);
1180 if (block == NULL) {
1181 archive_set_error(&a->archive,
1183 "Failed to read full block when scanning "
1184 "ISO9660 directory list");
1185 return (ARCHIVE_FATAL);
1187 seenJoliet = iso9660->seenJoliet;/* Save flag. */
1188 iso9660->seenJoliet = 0;
1189 file = parse_file_info(a, NULL, block);
1191 return (ARCHIVE_FATAL);
1192 iso9660->seenJoliet = seenJoliet;
1194 /* Store the root directory in the pending list. */
1195 add_entry(iso9660, file);
1196 if (iso9660->seenRockridge) {
1197 a->archive.archive_format =
1198 ARCHIVE_FORMAT_ISO9660_ROCKRIDGE;
1199 a->archive.archive_format_name =
1200 "ISO9660 with Rockridge extensions";
1202 rd_r = read_entries(a);
1203 if (rd_r == ARCHIVE_FATAL)
1204 return (ARCHIVE_FATAL);
1208 /* Get the next entry that appears after the current offset. */
1209 r = next_entry_seek(a, iso9660, &file);
1210 if (r != ARCHIVE_OK)
1213 iso9660->entry_bytes_remaining = file->size;
1214 iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */
1216 if (file->offset + file->size > iso9660->volume_size) {
1217 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1218 "File is beyond end-of-media: %s", file->name);
1219 iso9660->entry_bytes_remaining = 0;
1220 iso9660->entry_sparse_offset = 0;
1221 return (ARCHIVE_WARN);
1224 /* Set up the entry structure with information about this entry. */
1225 archive_entry_set_mode(entry, file->mode);
1226 archive_entry_set_uid(entry, file->uid);
1227 archive_entry_set_gid(entry, file->gid);
1228 archive_entry_set_nlink(entry, file->nlinks);
1229 if (file->birthtime_is_set)
1230 archive_entry_set_birthtime(entry, file->birthtime, 0);
1232 archive_entry_unset_birthtime(entry);
1233 archive_entry_set_mtime(entry, file->mtime, 0);
1234 archive_entry_set_ctime(entry, file->ctime, 0);
1235 archive_entry_set_atime(entry, file->atime, 0);
1236 /* N.B.: Rock Ridge supports 64-bit device numbers. */
1237 archive_entry_set_rdev(entry, (dev_t)file->rdev);
1238 archive_entry_set_size(entry, iso9660->entry_bytes_remaining);
1239 archive_string_empty(&iso9660->pathname);
1240 archive_entry_set_pathname(entry,
1241 build_pathname(&iso9660->pathname, file));
1242 if (file->symlink.s != NULL)
1243 archive_entry_copy_symlink(entry, file->symlink.s);
1245 /* Note: If the input isn't seekable, we can't rewind to
1246 * return the same body again, so if the next entry refers to
1247 * the same data, we have to return it as a hardlink to the
1248 * original entry. */
1249 if (file->number != -1 &&
1250 file->number == iso9660->previous_number) {
1251 archive_entry_set_hardlink(entry,
1252 iso9660->previous_pathname.s);
1253 archive_entry_unset_size(entry);
1254 iso9660->entry_bytes_remaining = 0;
1255 iso9660->entry_sparse_offset = 0;
1256 return (ARCHIVE_OK);
1259 /* Except for the hardlink case above, if the offset of the
1260 * next entry is before our current position, we can't seek
1261 * backwards to extract it, so issue a warning. Note that
1262 * this can only happen if this entry was added to the heap
1263 * after we passed this offset, that is, only if the directory
1264 * mentioning this entry is later than the body of the entry.
1265 * Such layouts are very unusual; most ISO9660 writers lay out
1266 * and record all directory information first, then store
1267 * all file bodies. */
1268 /* TODO: Someday, libarchive's I/O core will support optional
1269 * seeking. When that day comes, this code should attempt to
1270 * seek and only return the error if the seek fails. That
1271 * will give us support for whacky ISO images that require
1272 * seeking while retaining the ability to read almost all ISO
1273 * images in a streaming fashion. */
1274 if ((file->mode & AE_IFMT) != AE_IFDIR &&
1275 file->offset < iso9660->current_position) {
1276 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1277 "Ignoring out-of-order file @%x (%s) %jd < %jd",
1279 iso9660->pathname.s,
1280 file->offset, iso9660->current_position);
1281 iso9660->entry_bytes_remaining = 0;
1282 iso9660->entry_sparse_offset = 0;
1283 return (ARCHIVE_WARN);
1286 /* Initialize zisofs variables. */
1287 iso9660->entry_zisofs.pz = file->pz;
1290 struct zisofs *zisofs;
1292 zisofs = &iso9660->entry_zisofs;
1293 zisofs->initialized = 0;
1294 zisofs->pz_log2_bs = file->pz_log2_bs;
1295 zisofs->pz_uncompressed_size = file->pz_uncompressed_size;
1296 zisofs->pz_offset = 0;
1297 zisofs->header_avail = 0;
1298 zisofs->header_passed = 0;
1299 zisofs->block_pointers_avail = 0;
1301 archive_entry_set_size(entry, file->pz_uncompressed_size);
1304 iso9660->previous_number = file->number;
1305 archive_strcpy(&iso9660->previous_pathname, iso9660->pathname.s);
1307 /* Reset entry_bytes_remaining if the file is multi extent. */
1308 iso9660->entry_content = file->contents.first;
1309 if (iso9660->entry_content != NULL)
1310 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1312 if (archive_entry_filetype(entry) == AE_IFDIR) {
1313 /* Overwrite nlinks by proper link number which is
1314 * calculated from number of sub directories. */
1315 archive_entry_set_nlink(entry, 2 + file->subdirs);
1316 /* Directory data has been read completely. */
1317 iso9660->entry_bytes_remaining = 0;
1318 iso9660->entry_sparse_offset = 0;
1322 if (rd_r != ARCHIVE_OK)
1324 return (ARCHIVE_OK);
1328 archive_read_format_iso9660_read_data_skip(struct archive_read *a)
1330 /* Because read_next_header always does an explicit skip
1331 * to the next entry, we don't need to do anything here. */
1332 (void)a; /* UNUSED */
1333 return (ARCHIVE_OK);
1339 zisofs_read_data(struct archive_read *a,
1340 const void **buff, size_t *size, off_t *offset)
1342 struct iso9660 *iso9660;
1343 struct zisofs *zisofs;
1344 const unsigned char *p;
1347 size_t uncompressed_size;
1350 iso9660 = (struct iso9660 *)(a->format->data);
1351 zisofs = &iso9660->entry_zisofs;
1353 p = __archive_read_ahead(a, 1, &bytes_read);
1354 if (bytes_read <= 0) {
1355 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1356 "Truncated zisofs file body");
1357 return (ARCHIVE_FATAL);
1359 if (bytes_read > iso9660->entry_bytes_remaining)
1360 bytes_read = iso9660->entry_bytes_remaining;
1362 uncompressed_size = 0;
1364 if (!zisofs->initialized) {
1367 /* Allocate block pointers buffer. */
1368 ceil = (zisofs->pz_uncompressed_size +
1369 (1LL << zisofs->pz_log2_bs) - 1)
1370 >> zisofs->pz_log2_bs;
1371 xsize = (ceil + 1) * 4;
1372 if (zisofs->block_pointers_alloc < xsize) {
1375 if (zisofs->block_pointers != NULL)
1376 free(zisofs->block_pointers);
1377 alloc = ((xsize >> 10) + 1) << 10;
1378 zisofs->block_pointers = malloc(alloc);
1379 if (zisofs->block_pointers == NULL) {
1380 archive_set_error(&a->archive, ENOMEM,
1381 "No memory for zisofs decompression");
1382 return (ARCHIVE_FATAL);
1384 zisofs->block_pointers_alloc = alloc;
1386 zisofs->block_pointers_size = xsize;
1388 /* Allocate uncompressed data buffer. */
1389 xsize = 1UL << zisofs->pz_log2_bs;
1390 if (zisofs->uncompressed_buffer_size < xsize) {
1391 if (zisofs->uncompressed_buffer != NULL)
1392 free(zisofs->uncompressed_buffer);
1393 zisofs->uncompressed_buffer = malloc(xsize);
1394 if (zisofs->uncompressed_buffer == NULL) {
1395 archive_set_error(&a->archive, ENOMEM,
1396 "No memory for zisofs decompression");
1397 return (ARCHIVE_FATAL);
1400 zisofs->uncompressed_buffer_size = xsize;
1403 * Read the file header, and check the magic code of zisofs.
1405 if (zisofs->header_avail < sizeof(zisofs->header)) {
1406 xsize = sizeof(zisofs->header) - zisofs->header_avail;
1409 memcpy(zisofs->header + zisofs->header_avail, p, xsize);
1410 zisofs->header_avail += xsize;
1414 if (!zisofs->header_passed &&
1415 zisofs->header_avail == sizeof(zisofs->header)) {
1418 if (memcmp(zisofs->header, zisofs_magic,
1419 sizeof(zisofs_magic)) != 0)
1421 if (archive_le32dec(zisofs->header + 8)
1422 != zisofs->pz_uncompressed_size)
1424 if (zisofs->header[12] != 4)
1426 if (zisofs->header[13] != zisofs->pz_log2_bs)
1429 archive_set_error(&a->archive,
1430 ARCHIVE_ERRNO_FILE_FORMAT,
1431 "Illegal zisofs file body");
1432 return (ARCHIVE_FATAL);
1434 zisofs->header_passed = 1;
1437 * Read block pointers.
1439 if (zisofs->header_passed &&
1440 zisofs->block_pointers_avail < zisofs->block_pointers_size) {
1441 xsize = zisofs->block_pointers_size
1442 - zisofs->block_pointers_avail;
1445 memcpy(zisofs->block_pointers
1446 + zisofs->block_pointers_avail, p, xsize);
1447 zisofs->block_pointers_avail += xsize;
1450 if (zisofs->block_pointers_avail
1451 == zisofs->block_pointers_size) {
1452 /* We've got all block pointers and initialize
1453 * related variables. */
1454 zisofs->block_off = 0;
1455 zisofs->block_avail = 0;
1456 /* Complete a initialization */
1457 zisofs->initialized = 1;
1461 if (!zisofs->initialized)
1462 goto next_data; /* We need more datas. */
1466 * Get block offsets from block pointers.
1468 if (zisofs->block_avail == 0) {
1471 if (zisofs->block_off + 4 >= zisofs->block_pointers_size) {
1472 /* There isn't a pair of offsets. */
1473 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1474 "Illegal zisofs block pointers");
1475 return (ARCHIVE_FATAL);
1477 bst = archive_le32dec(zisofs->block_pointers + zisofs->block_off);
1478 if (bst != zisofs->pz_offset + (bytes_read - avail)) {
1479 /* TODO: Should we seek offset of current file by bst ? */
1480 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1481 "Illegal zisofs block pointers(cannot seek)");
1482 return (ARCHIVE_FATAL);
1484 bed = archive_le32dec(
1485 zisofs->block_pointers + zisofs->block_off + 4);
1487 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1488 "Illegal zisofs block pointers");
1489 return (ARCHIVE_FATAL);
1491 zisofs->block_avail = bed - bst;
1492 zisofs->block_off += 4;
1494 /* Initialize compression library for new block. */
1495 if (zisofs->stream_valid)
1496 r = inflateReset(&zisofs->stream);
1498 r = inflateInit(&zisofs->stream);
1500 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1501 "Can't initialize zisofs decompression.");
1502 return (ARCHIVE_FATAL);
1504 zisofs->stream_valid = 1;
1505 zisofs->stream.total_in = 0;
1506 zisofs->stream.total_out = 0;
1510 * Make uncompressed datas.
1512 if (zisofs->block_avail == 0) {
1513 memset(zisofs->uncompressed_buffer, 0,
1514 zisofs->uncompressed_buffer_size);
1515 uncompressed_size = zisofs->uncompressed_buffer_size;
1517 zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p;
1518 if (avail > zisofs->block_avail)
1519 zisofs->stream.avail_in = zisofs->block_avail;
1521 zisofs->stream.avail_in = avail;
1522 zisofs->stream.next_out = zisofs->uncompressed_buffer;
1523 zisofs->stream.avail_out = zisofs->uncompressed_buffer_size;
1525 r = inflate(&zisofs->stream, 0);
1527 case Z_OK: /* Decompressor made some progress.*/
1528 case Z_STREAM_END: /* Found end of stream. */
1531 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1532 "zisofs decompression failed (%d)", r);
1533 return (ARCHIVE_FATAL);
1536 zisofs->uncompressed_buffer_size - zisofs->stream.avail_out;
1537 avail -= zisofs->stream.next_in - p;
1538 zisofs->block_avail -= zisofs->stream.next_in - p;
1541 bytes_read -= avail;
1542 *buff = zisofs->uncompressed_buffer;
1543 *size = uncompressed_size;
1544 *offset = iso9660->entry_sparse_offset;
1545 iso9660->entry_sparse_offset += uncompressed_size;
1546 iso9660->entry_bytes_remaining -= bytes_read;
1547 iso9660->current_position += bytes_read;
1548 zisofs->pz_offset += bytes_read;
1549 __archive_read_consume(a, bytes_read);
1551 return (ARCHIVE_OK);
1554 #else /* HAVE_ZLIB_H */
1557 zisofs_read_data(struct archive_read *a,
1558 const void **buff, size_t *size, off_t *offset)
1561 (void)buff;/* UNUSED */
1562 (void)size;/* UNUSED */
1563 (void)offset;/* UNUSED */
1564 archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT,
1565 "zisofs is not supported on this platform.");
1566 return (ARCHIVE_FAILED);
1569 #endif /* HAVE_ZLIB_H */
1572 archive_read_format_iso9660_read_data(struct archive_read *a,
1573 const void **buff, size_t *size, off_t *offset)
1576 struct iso9660 *iso9660;
1578 iso9660 = (struct iso9660 *)(a->format->data);
1579 if (iso9660->entry_bytes_remaining <= 0) {
1580 if (iso9660->entry_content != NULL)
1581 iso9660->entry_content = iso9660->entry_content->next;
1582 if (iso9660->entry_content == NULL) {
1585 *offset = iso9660->entry_sparse_offset;
1586 return (ARCHIVE_EOF);
1588 /* Seek forward to the start of the entry. */
1589 if (iso9660->current_position < iso9660->entry_content->offset) {
1592 step = iso9660->entry_content->offset -
1593 iso9660->current_position;
1594 step = __archive_read_skip(a, step);
1597 iso9660->current_position =
1598 iso9660->entry_content->offset;
1600 if (iso9660->entry_content->offset < iso9660->current_position) {
1601 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1602 "Ignoring out-of-order file (%s) %jd < %jd",
1603 iso9660->pathname.s,
1604 iso9660->entry_content->offset,
1605 iso9660->current_position);
1608 *offset = iso9660->entry_sparse_offset;
1609 return (ARCHIVE_WARN);
1611 iso9660->entry_bytes_remaining = iso9660->entry_content->size;
1613 if (iso9660->entry_zisofs.pz)
1614 return (zisofs_read_data(a, buff, size, offset));
1616 *buff = __archive_read_ahead(a, 1, &bytes_read);
1617 if (bytes_read == 0)
1618 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1619 "Truncated input file");
1621 return (ARCHIVE_FATAL);
1622 if (bytes_read > iso9660->entry_bytes_remaining)
1623 bytes_read = iso9660->entry_bytes_remaining;
1625 *offset = iso9660->entry_sparse_offset;
1626 iso9660->entry_sparse_offset += bytes_read;
1627 iso9660->entry_bytes_remaining -= bytes_read;
1628 iso9660->current_position += bytes_read;
1629 __archive_read_consume(a, bytes_read);
1630 return (ARCHIVE_OK);
1634 archive_read_format_iso9660_cleanup(struct archive_read *a)
1636 struct iso9660 *iso9660;
1639 iso9660 = (struct iso9660 *)(a->format->data);
1640 release_files(iso9660);
1641 free(iso9660->read_ce_req.reqs);
1642 archive_string_free(&iso9660->pathname);
1643 archive_string_free(&iso9660->previous_pathname);
1644 if (iso9660->pending_files.files)
1645 free(iso9660->pending_files.files);
1646 if (iso9660->re_dirs.files)
1647 free(iso9660->re_dirs.files);
1648 if (iso9660->cl_files.files)
1649 free(iso9660->cl_files.files);
1651 free(iso9660->entry_zisofs.uncompressed_buffer);
1652 free(iso9660->entry_zisofs.block_pointers);
1653 if (iso9660->entry_zisofs.stream_valid) {
1654 if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) {
1655 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1656 "Failed to clean up zlib decompressor");
1662 (a->format->data) = NULL;
1667 * This routine parses a single ISO directory record, makes sense
1668 * of any extensions, and stores the result in memory.
1670 static struct file_info *
1671 parse_file_info(struct archive_read *a, struct file_info *parent,
1672 const unsigned char *isodirrec)
1674 struct iso9660 *iso9660;
1675 struct file_info *file;
1677 const unsigned char *rr_start, *rr_end;
1678 const unsigned char *p;
1683 iso9660 = (struct iso9660 *)(a->format->data);
1685 dr_len = (size_t)isodirrec[DR_length_offset];
1686 name_len = (size_t)isodirrec[DR_name_len_offset];
1687 location = archive_le32dec(isodirrec + DR_extent_offset);
1688 /* Sanity check that dr_len needs at least 34. */
1690 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1691 "Invalid length of directory record");
1694 /* Sanity check that name_len doesn't exceed dr_len. */
1695 if (dr_len - 33 < name_len || name_len == 0) {
1696 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1697 "Invalid length of file identifier");
1700 /* Sanity check that location doesn't exceed volume block.
1701 * Don't check lower limit of location; it's possibility
1702 * the location has negative value when file type is symbolic
1703 * link or file size is zero. As far as I know latest mkisofs
1706 if (location >= iso9660->volume_block) {
1707 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
1708 "Invalid location of extent of file");
1712 /* Create a new file entry and copy data from the ISO dir record. */
1713 file = (struct file_info *)malloc(sizeof(*file));
1715 archive_set_error(&a->archive, ENOMEM,
1716 "No memory for file entry");
1719 memset(file, 0, sizeof(*file));
1720 file->parent = parent;
1721 file->offset = iso9660->logical_block_size * (uint64_t)location;
1722 file->size = toi(isodirrec + DR_size_offset, DR_size_size);
1723 file->mtime = isodate7(isodirrec + DR_date_offset);
1724 file->ctime = file->atime = file->mtime;
1726 p = isodirrec + DR_name_offset;
1727 /* Rockridge extensions (if any) follow name. Compute this
1728 * before fidgeting the name_len below. */
1729 rr_start = p + name_len + (name_len & 1 ? 0 : 1);
1730 rr_end = isodirrec + dr_len;
1732 if (iso9660->seenJoliet) {
1733 /* Joliet names are max 64 chars (128 bytes) according to spec,
1734 * but genisoimage/mkisofs allows recording longer Joliet
1735 * names which are 103 UCS2 characters(206 bytes) by their
1736 * option '-joliet-long'.
1738 wchar_t wbuff[103+1], *wp;
1739 const unsigned char *c;
1743 /* convert BE UTF-16 to wchar_t */
1744 for (c = p, wp = wbuff;
1745 c < (p + name_len) &&
1746 wp < (wbuff + sizeof(wbuff)/sizeof(*wbuff) - 1);
1748 *wp++ = (((255 & (int)c[0]) << 8) | (255 & (int)c[1]));
1752 #if 0 /* untested code, is it at all useful on Joliet? */
1753 /* trim trailing first version and dot from filename.
1755 * Remember we where in UTF-16BE land!
1756 * SEPARATOR 1 (.) and SEPARATOR 2 (;) are both
1757 * 16 bits big endian characters on Joliet.
1759 * TODO: sanitize filename?
1760 * Joliet allows any UCS-2 char except:
1761 * *, /, :, ;, ? and \.
1763 /* Chop off trailing ';1' from files. */
1764 if (*(wp-2) == ';' && *(wp-1) == '1') {
1769 /* Chop off trailing '.' from filenames. */
1774 /* store the result in the file name field. */
1775 archive_strappend_w_utf8(&file->name, wbuff);
1777 /* Chop off trailing ';1' from files. */
1778 if (name_len > 2 && p[name_len - 2] == ';' &&
1779 p[name_len - 1] == '1')
1781 /* Chop off trailing '.' from filenames. */
1782 if (name_len > 1 && p[name_len - 1] == '.')
1785 archive_strncpy(&file->name, (const char *)p, name_len);
1788 flags = isodirrec[DR_flags_offset];
1790 file->mode = AE_IFDIR | 0700;
1792 file->mode = AE_IFREG | 0400;
1794 file->multi_extent = 1;
1796 file->multi_extent = 0;
1798 * Use location for file number.
1799 * File number is treated as inode number to find out harlink
1800 * target. If Rockridge extensions is being used, file number
1801 * will be overwritten by FILE SERIAL NUMBER of RRIP "PX"
1803 * NOTE: Old mkisofs did not record that FILE SERIAL NUMBER
1806 if (file->size == 0 && location >= 0)
1807 /* If file->size is zero, its location points wrong place.
1808 * Dot not use it for file number.
1809 * When location has negative value, it can be used
1814 file->number = (int64_t)(uint32_t)location;
1816 /* Rockridge extensions overwrite information from above. */
1817 if (iso9660->opt_support_rockridge) {
1818 if (parent == NULL && rr_end - rr_start >= 7) {
1820 if (p[0] == 'S' && p[1] == 'P'
1821 && p[2] == 7 && p[3] == 1
1822 && p[4] == 0xBE && p[5] == 0xEF) {
1824 * SP extension stores the suspOffset
1825 * (Number of bytes to skip between
1826 * filename and SUSP records.)
1827 * It is mandatory by the SUSP standard
1830 * It allows SUSP to coexist with
1831 * non-SUSP uses of the System
1832 * Use Area by placing non-SUSP data
1835 * SP extension must be in the root
1836 * directory entry, disable all SUSP
1837 * processing if not found.
1839 iso9660->suspOffset = p[6];
1840 iso9660->seenSUSP = 1;
1844 if (iso9660->seenSUSP) {
1847 file->name_continues = 0;
1848 file->symlink_continues = 0;
1849 rr_start += iso9660->suspOffset;
1850 r = parse_rockridge(a, file, rr_start, rr_end);
1851 if (r != ARCHIVE_OK) {
1856 /* If there isn't SUSP, disable parsing
1857 * rock ridge extensions. */
1858 iso9660->opt_support_rockridge = 0;
1861 file->nlinks = 1;/* Reset nlink. we'll calculate it later. */
1862 /* Tell file's parent how many children that parent has. */
1863 if (parent != NULL && (flags & 0x02) && file->cl_offset == 0)
1867 /* DEBUGGING: Warn about attributes I don't yet fully support. */
1868 if ((flags & ~0x02) != 0) {
1869 fprintf(stderr, "\n ** Unrecognized flag: ");
1870 dump_isodirrec(stderr, isodirrec);
1871 fprintf(stderr, "\n");
1872 } else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) {
1873 fprintf(stderr, "\n ** Unrecognized sequence number: ");
1874 dump_isodirrec(stderr, isodirrec);
1875 fprintf(stderr, "\n");
1876 } else if (*(isodirrec + DR_file_unit_size_offset) != 0) {
1877 fprintf(stderr, "\n ** Unexpected file unit size: ");
1878 dump_isodirrec(stderr, isodirrec);
1879 fprintf(stderr, "\n");
1880 } else if (*(isodirrec + DR_interleave_offset) != 0) {
1881 fprintf(stderr, "\n ** Unexpected interleave: ");
1882 dump_isodirrec(stderr, isodirrec);
1883 fprintf(stderr, "\n");
1884 } else if (*(isodirrec + DR_ext_attr_length_offset) != 0) {
1885 fprintf(stderr, "\n ** Unexpected extended attribute length: ");
1886 dump_isodirrec(stderr, isodirrec);
1887 fprintf(stderr, "\n");
1890 register_file(iso9660, file);
1895 parse_rockridge(struct archive_read *a, struct file_info *file,
1896 const unsigned char *p, const unsigned char *end)
1898 struct iso9660 *iso9660;
1900 iso9660 = (struct iso9660 *)(a->format->data);
1902 while (p + 4 <= end /* Enough space for another entry. */
1903 && p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */
1904 && p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */
1905 && p[2] >= 4 /* Sanity-check length. */
1906 && p + p[2] <= end) { /* Sanity-check length. */
1907 const unsigned char *data = p + 4;
1908 int data_length = p[2] - 4;
1912 * Yes, each 'if' here does test p[0] again.
1913 * Otherwise, the fall-through handling to catch
1914 * unsupported extensions doesn't work.
1918 if (p[0] == 'C' && p[1] == 'E') {
1919 if (version == 1 && data_length == 24) {
1921 * CE extension comprises:
1922 * 8 byte sector containing extension
1923 * 8 byte offset w/in above sector
1924 * 8 byte length of continuation
1927 archive_le32dec(data);
1929 archive_le32dec(data+8);
1931 archive_le32dec(data+16);
1932 if (register_CE(a, location, file)
1934 return (ARCHIVE_FATAL);
1938 if (p[0] == 'C' && p[1] == 'L') {
1939 if (version == 1 && data_length == 8) {
1940 file->cl_offset = (uint64_t)
1941 iso9660->logical_block_size *
1942 (uint64_t)archive_le32dec(data);
1943 iso9660->seenRockridge = 1;
1949 if (p[0] == 'N' && p[1] == 'M') {
1951 parse_rockridge_NM1(file,
1953 iso9660->seenRockridge = 1;
1959 if (p[0] == 'P' && p[1] == 'D') {
1961 * PD extension is padding;
1962 * contents are always ignored.
1966 if (p[0] == 'P' && p[1] == 'N') {
1967 if (version == 1 && data_length == 16) {
1968 file->rdev = toi(data,4);
1970 file->rdev |= toi(data + 8, 4);
1971 iso9660->seenRockridge = 1;
1975 if (p[0] == 'P' && p[1] == 'X') {
1977 * PX extension comprises:
1979 * 8 bytes for nlinks,
1982 * 8 bytes for inode.
1985 if (data_length >= 8)
1988 if (data_length >= 16)
1991 if (data_length >= 24)
1993 = toi(data + 16, 4);
1994 if (data_length >= 32)
1996 = toi(data + 24, 4);
1997 if (data_length >= 40)
1999 = toi(data + 32, 4);
2000 iso9660->seenRockridge = 1;
2006 if (p[0] == 'R' && p[1] == 'E' && version == 1) {
2008 iso9660->seenRockridge = 1;
2011 if (p[0] == 'R' && p[1] == 'R' && version == 1) {
2013 * RR extension comprises:
2014 * one byte flag value
2015 * This extension is obsolete,
2016 * so contents are always ignored.
2022 if (p[0] == 'S' && p[1] == 'L') {
2024 parse_rockridge_SL1(file,
2026 iso9660->seenRockridge = 1;
2030 if (p[0] == 'S' && p[1] == 'T'
2031 && data_length == 0 && version == 1) {
2033 * ST extension marks end of this
2034 * block of SUSP entries.
2036 * It allows SUSP to coexist with
2037 * non-SUSP uses of the System
2038 * Use Area by placing non-SUSP data
2041 iso9660->seenSUSP = 0;
2042 iso9660->seenRockridge = 0;
2043 return (ARCHIVE_OK);
2046 if (p[0] == 'T' && p[1] == 'F') {
2048 parse_rockridge_TF1(file,
2050 iso9660->seenRockridge = 1;
2056 if (p[0] == 'Z' && p[1] == 'F') {
2058 parse_rockridge_ZF1(file,
2064 /* The FALLTHROUGHs above leave us here for
2065 * any unsupported extension. */
2073 return (ARCHIVE_OK);
2077 register_CE(struct archive_read *a, int32_t location,
2078 struct file_info *file)
2080 struct iso9660 *iso9660;
2081 struct read_ce_queue *heap;
2082 struct read_ce_req *p;
2083 uint64_t offset, parent_offset;
2086 iso9660 = (struct iso9660 *)(a->format->data);
2087 offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size;
2088 if (((file->mode & AE_IFMT) == AE_IFREG &&
2089 offset >= file->offset) ||
2090 offset < iso9660->current_position) {
2091 archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
2092 "Invalid location in SUSP \"CE\" extension");
2093 return (ARCHIVE_FATAL);
2096 /* Expand our CE list as necessary. */
2097 heap = &(iso9660->read_ce_req);
2098 if (heap->cnt >= heap->allocated) {
2101 if (heap->allocated < 16)
2104 new_size = heap->allocated * 2;
2105 /* Overflow might keep us from growing the list. */
2106 if (new_size <= heap->allocated)
2107 __archive_errx(1, "Out of memory");
2108 p = malloc(new_size * sizeof(p[0]));
2110 __archive_errx(1, "Out of memory");
2111 if (heap->reqs != NULL) {
2112 memcpy(p, heap->reqs, heap->cnt * sizeof(*p));
2116 heap->allocated = new_size;
2120 * Start with hole at end, walk it up tree to find insertion point.
2124 parent = (hole - 1)/2;
2125 parent_offset = heap->reqs[parent].offset;
2126 if (offset >= parent_offset) {
2127 heap->reqs[hole].offset = offset;
2128 heap->reqs[hole].file = file;
2129 return (ARCHIVE_OK);
2131 // Move parent into hole <==> move hole up tree.
2132 heap->reqs[hole] = heap->reqs[parent];
2135 heap->reqs[0].offset = offset;
2136 heap->reqs[0].file = file;
2137 return (ARCHIVE_OK);
2141 next_CE(struct read_ce_queue *heap)
2143 uint64_t a_offset, b_offset, c_offset;
2145 struct read_ce_req tmp;
2151 * Move the last item in the heap to the root of the tree
2153 heap->reqs[0] = heap->reqs[--(heap->cnt)];
2156 * Rebalance the heap.
2158 a = 0; // Starting element and its offset
2159 a_offset = heap->reqs[a].offset;
2161 b = a + a + 1; // First child
2164 b_offset = heap->reqs[b].offset;
2165 c = b + 1; // Use second child if it is smaller.
2166 if (c < heap->cnt) {
2167 c_offset = heap->reqs[c].offset;
2168 if (c_offset < b_offset) {
2170 b_offset = c_offset;
2173 if (a_offset <= b_offset)
2175 tmp = heap->reqs[a];
2176 heap->reqs[a] = heap->reqs[b];
2177 heap->reqs[b] = tmp;
2184 read_CE(struct archive_read *a, struct iso9660 *iso9660)
2186 struct read_ce_queue *heap;
2187 const unsigned char *b, *p, *end;
2188 struct file_info *file;
2192 /* Read data which RRIP "CE" extension points. */
2193 heap = &(iso9660->read_ce_req);
2194 step = iso9660->logical_block_size;
2196 heap->reqs[0].offset == iso9660->current_position) {
2197 b = __archive_read_ahead(a, step, NULL);
2199 archive_set_error(&a->archive,
2201 "Failed to read full block when scanning "
2202 "ISO9660 directory list");
2203 return (ARCHIVE_FATAL);
2206 file = heap->reqs[0].file;
2207 p = b + file->ce_offset;
2208 end = p + file->ce_size;
2210 r = parse_rockridge(a, file, p, end);
2211 if (r != ARCHIVE_OK)
2212 return (ARCHIVE_FATAL);
2213 } while (heap->cnt &&
2214 heap->reqs[0].offset == iso9660->current_position);
2215 /* NOTE: Do not move this consume's code to fron of
2216 * do-while loop. Registration of nested CE extension
2217 * might cause error because of current position. */
2218 __archive_read_consume(a, step);
2219 iso9660->current_position += step;
2221 return (ARCHIVE_OK);
2225 parse_rockridge_NM1(struct file_info *file,
2226 const unsigned char *data, int data_length)
2228 if (!file->name_continues)
2229 archive_string_empty(&file->name);
2230 file->name_continues = 0;
2231 if (data_length < 1)
2234 * NM version 1 extension comprises:
2235 * 1 byte flag, value is one of:
2236 * = 0: remainder is name
2237 * = 1: remainder is name, next NM entry continues name
2240 * = 32: Implementation specific
2241 * All other values are reserved.
2245 if (data_length < 2)
2247 archive_strncat(&file->name, (const char *)data + 1, data_length - 1);
2250 if (data_length < 2)
2252 archive_strncat(&file->name, (const char *)data + 1, data_length - 1);
2253 file->name_continues = 1;
2256 archive_strcat(&file->name, ".");
2259 archive_strcat(&file->name, "..");
2268 parse_rockridge_TF1(struct file_info *file, const unsigned char *data,
2273 * TF extension comprises:
2275 * create time (optional)
2276 * modify time (optional)
2277 * access time (optional)
2278 * attribute time (optional)
2279 * Time format and presence of fields
2280 * is controlled by flag bits.
2282 if (data_length < 1)
2288 /* Use 17-byte time format. */
2289 if ((flag & 1) && data_length >= 17) {
2291 file->birthtime_is_set = 1;
2292 file->birthtime = isodate17(data);
2296 if ((flag & 2) && data_length >= 17) {
2298 file->mtime = isodate17(data);
2302 if ((flag & 4) && data_length >= 17) {
2304 file->atime = isodate17(data);
2308 if ((flag & 8) && data_length >= 17) {
2309 /* Attribute change time. */
2310 file->ctime = isodate17(data);
2313 /* Use 7-byte time format. */
2314 if ((flag & 1) && data_length >= 7) {
2316 file->birthtime_is_set = 1;
2317 file->birthtime = isodate7(data);
2321 if ((flag & 2) && data_length >= 7) {
2323 file->mtime = isodate7(data);
2327 if ((flag & 4) && data_length >= 7) {
2329 file->atime = isodate7(data);
2333 if ((flag & 8) && data_length >= 7) {
2334 /* Attribute change time. */
2335 file->ctime = isodate7(data);
2341 parse_rockridge_SL1(struct file_info *file, const unsigned char *data,
2344 const char *separator = "";
2346 if (!file->symlink_continues || file->symlink.length < 1)
2347 archive_string_empty(&file->symlink);
2348 else if (!file->symlink_continues &&
2349 file->symlink.s[file->symlink.length - 1] != '/')
2351 file->symlink_continues = 0;
2354 * Defined flag values:
2355 * 0: This is the last SL record for this symbolic link
2356 * 1: this symbolic link field continues in next SL entry
2357 * All other values are reserved.
2359 if (data_length < 1)
2365 file->symlink_continues = 1;
2370 ++data; /* Skip flag byte. */
2374 * SL extension body stores "components".
2375 * Basically, this is a complicated way of storing
2376 * a POSIX path. It also interferes with using
2377 * symlinks for storing non-path data. <sigh>
2379 * Each component is 2 bytes (flag and length)
2380 * possibly followed by name data.
2382 while (data_length >= 2) {
2383 unsigned char flag = *data++;
2384 unsigned char nlen = *data++;
2387 archive_strcat(&file->symlink, separator);
2391 case 0: /* Usual case, this is text. */
2392 if (data_length < nlen)
2394 archive_strncat(&file->symlink,
2395 (const char *)data, nlen);
2397 case 0x01: /* Text continues in next component. */
2398 if (data_length < nlen)
2400 archive_strncat(&file->symlink,
2401 (const char *)data, nlen);
2404 case 0x02: /* Current dir. */
2405 archive_strcat(&file->symlink, ".");
2407 case 0x04: /* Parent dir. */
2408 archive_strcat(&file->symlink, "..");
2410 case 0x08: /* Root of filesystem. */
2411 archive_strcat(&file->symlink, "/");
2414 case 0x10: /* Undefined (historically "volume root" */
2415 archive_string_empty(&file->symlink);
2416 archive_strcat(&file->symlink, "ROOT");
2418 case 0x20: /* Undefined (historically "hostname") */
2419 archive_strcat(&file->symlink, "hostname");
2422 /* TODO: issue a warning ? */
2426 data_length -= nlen;
2431 parse_rockridge_ZF1(struct file_info *file, const unsigned char *data,
2435 if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) {
2438 file->pz_log2_bs = data[3];
2439 file->pz_uncompressed_size = archive_le32dec(&data[4]);
2444 register_file(struct iso9660 *iso9660, struct file_info *file)
2447 file->use_next = iso9660->use_files;
2448 iso9660->use_files = file;
2452 release_files(struct iso9660 *iso9660)
2454 struct content *con, *connext;
2455 struct file_info *file;
2457 file = iso9660->use_files;
2458 while (file != NULL) {
2459 struct file_info *next = file->use_next;
2461 archive_string_free(&file->name);
2462 archive_string_free(&file->symlink);
2463 con = file->contents.first;
2464 while (con != NULL) {
2465 connext = con->next;
2475 next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
2476 struct file_info **pfile)
2478 struct file_info *file;
2480 *pfile = file = next_cache_entry(iso9660);
2482 return (ARCHIVE_EOF);
2484 /* Don't waste time seeking for zero-length bodies. */
2485 if (file->size == 0)
2486 file->offset = iso9660->current_position;
2488 /* Seek forward to the start of the entry. */
2489 if (iso9660->current_position < file->offset) {
2492 step = file->offset - iso9660->current_position;
2493 step = __archive_read_skip(a, step);
2496 iso9660->current_position = file->offset;
2499 /* We found body of file; handle it now. */
2500 return (ARCHIVE_OK);
2503 static struct file_info *
2504 next_cache_entry(struct iso9660 *iso9660)
2506 struct file_info *file;
2508 struct file_info *first;
2509 struct file_info **last;
2514 file = cache_get_entry(iso9660);
2516 while (file->parent != NULL && !file->parent->exposed) {
2517 /* If file's parent is not exposed, it's moved
2518 * to next entry of its parent. */
2519 cache_add_to_next_of_parent(iso9660, file);
2520 file = cache_get_entry(iso9660);
2525 file = next_entry(iso9660);
2529 if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1)
2533 number = file->number;
2534 iso9660->cache_files.first = NULL;
2535 iso9660->cache_files.last = &(iso9660->cache_files.first);
2536 empty_files.first = NULL;
2537 empty_files.last = &empty_files.first;
2538 /* Collect files which has the same file serial number.
2539 * Peek pending_files so that file which number is different
2540 * is not put bak. */
2541 while (iso9660->pending_files.used > 0 &&
2542 (iso9660->pending_files.files[0]->number == -1 ||
2543 iso9660->pending_files.files[0]->number == number)) {
2544 if (file->number == -1) {
2545 /* This file has the same offset
2546 * but it's wrong offset which empty files
2547 * and symlink files have.
2548 * NOTE: This wrong offse was recorded by
2549 * old mkisofs utility. If ISO images is
2550 * created by latest mkisofs, this does not
2554 *empty_files.last = file;
2555 empty_files.last = &(file->next);
2558 cache_add_entry(iso9660, file);
2560 file = next_entry(iso9660);
2565 if (file->number == -1) {
2567 *empty_files.last = file;
2568 empty_files.last = &(file->next);
2571 cache_add_entry(iso9660, file);
2575 /* The count is the same as number of hardlink,
2576 * so much so that each nlinks of files in cache_file
2577 * is overwritten by value of the count.
2579 for (file = iso9660->cache_files.first;
2580 file != NULL; file = file->next)
2581 file->nlinks = count;
2583 /* If there are empty files, that files are added
2584 * to the tail of the cache_files. */
2585 if (empty_files.first != NULL) {
2586 *iso9660->cache_files.last = empty_files.first;
2587 iso9660->cache_files.last = empty_files.last;
2589 return (cache_get_entry(iso9660));
2593 cache_add_entry(struct iso9660 *iso9660, struct file_info *file)
2596 *iso9660->cache_files.last = file;
2597 iso9660->cache_files.last = &(file->next);
2601 cache_add_to_next_of_parent(struct iso9660 *iso9660, struct file_info *file)
2603 file->next = file->parent->next;
2604 file->parent->next = file;
2605 if (iso9660->cache_files.last == &(file->parent->next))
2606 iso9660->cache_files.last = &(file->next);
2609 static inline struct file_info *
2610 cache_get_entry(struct iso9660 *iso9660)
2612 struct file_info *file;
2614 if ((file = iso9660->cache_files.first) != NULL) {
2615 iso9660->cache_files.first = file->next;
2616 if (iso9660->cache_files.first == NULL)
2617 iso9660->cache_files.last = &(iso9660->cache_files.first);
2623 heap_add_entry(struct heap_queue *heap, struct file_info *file, uint64_t key)
2625 uint64_t file_key, parent_key;
2628 /* Expand our pending files list as necessary. */
2629 if (heap->used >= heap->allocated) {
2630 struct file_info **new_pending_files;
2631 int new_size = heap->allocated * 2;
2633 if (heap->allocated < 1024)
2635 /* Overflow might keep us from growing the list. */
2636 if (new_size <= heap->allocated)
2637 __archive_errx(1, "Out of memory");
2638 new_pending_files = (struct file_info **)
2639 malloc(new_size * sizeof(new_pending_files[0]));
2640 if (new_pending_files == NULL)
2641 __archive_errx(1, "Out of memory");
2642 memcpy(new_pending_files, heap->files,
2643 heap->allocated * sizeof(new_pending_files[0]));
2644 if (heap->files != NULL)
2646 heap->files = new_pending_files;
2647 heap->allocated = new_size;
2650 file_key = file->key = key;
2653 * Start with hole at end, walk it up tree to find insertion point.
2655 hole = heap->used++;
2657 parent = (hole - 1)/2;
2658 parent_key = heap->files[parent]->key;
2659 if (file_key >= parent_key) {
2660 heap->files[hole] = file;
2663 // Move parent into hole <==> move hole up tree.
2664 heap->files[hole] = heap->files[parent];
2667 heap->files[0] = file;
2670 static struct file_info *
2671 heap_get_entry(struct heap_queue *heap)
2673 uint64_t a_key, b_key, c_key;
2675 struct file_info *r, *tmp;
2681 * The first file in the list is the earliest; we'll return this.
2686 * Move the last item in the heap to the root of the tree
2688 heap->files[0] = heap->files[--(heap->used)];
2691 * Rebalance the heap.
2693 a = 0; // Starting element and its heap key
2694 a_key = heap->files[a]->key;
2696 b = a + a + 1; // First child
2697 if (b >= heap->used)
2699 b_key = heap->files[b]->key;
2700 c = b + 1; // Use second child if it is smaller.
2701 if (c < heap->used) {
2702 c_key = heap->files[c]->key;
2703 if (c_key < b_key) {
2710 tmp = heap->files[a];
2711 heap->files[a] = heap->files[b];
2712 heap->files[b] = tmp;
2718 toi(const void *p, int n)
2720 const unsigned char *v = (const unsigned char *)p;
2722 return v[0] + 256 * toi(v + 1, n - 1);
2729 isodate7(const unsigned char *v)
2733 memset(&tm, 0, sizeof(tm));
2735 tm.tm_mon = v[1] - 1;
2740 /* v[6] is the signed timezone offset, in 1/4-hour increments. */
2741 offset = ((const signed char *)v)[6];
2742 if (offset > -48 && offset < 52) {
2743 tm.tm_hour -= offset / 4;
2744 tm.tm_min -= (offset % 4) * 15;
2746 return (time_from_tm(&tm));
2750 isodate17(const unsigned char *v)
2754 memset(&tm, 0, sizeof(tm));
2755 tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100
2756 + (v[2] - '0') * 10 + (v[3] - '0')
2758 tm.tm_mon = (v[4] - '0') * 10 + (v[5] - '0');
2759 tm.tm_mday = (v[6] - '0') * 10 + (v[7] - '0');
2760 tm.tm_hour = (v[8] - '0') * 10 + (v[9] - '0');
2761 tm.tm_min = (v[10] - '0') * 10 + (v[11] - '0');
2762 tm.tm_sec = (v[12] - '0') * 10 + (v[13] - '0');
2763 /* v[16] is the signed timezone offset, in 1/4-hour increments. */
2764 offset = ((const signed char *)v)[16];
2765 if (offset > -48 && offset < 52) {
2766 tm.tm_hour -= offset / 4;
2767 tm.tm_min -= (offset % 4) * 15;
2769 return (time_from_tm(&tm));
2773 time_from_tm(struct tm *t)
2776 /* Use platform timegm() if available. */
2779 /* Else use direct calculation using POSIX assumptions. */
2780 /* First, fix up tm_yday based on the year/month/day. */
2782 /* Then we can compute timegm() from first principles. */
2783 return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600
2784 + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000
2785 + ((t->tm_year - 69) / 4) * 86400 -
2786 ((t->tm_year - 1) / 100) * 86400
2787 + ((t->tm_year + 299) / 400) * 86400);
2792 build_pathname(struct archive_string *as, struct file_info *file)
2794 if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) {
2795 build_pathname(as, file->parent);
2796 archive_strcat(as, "/");
2798 if (archive_strlen(&file->name) == 0)
2799 archive_strcat(as, ".");
2801 archive_string_concat(as, &file->name);
2807 dump_isodirrec(FILE *out, const unsigned char *isodirrec)
2809 fprintf(out, " l %d,",
2810 toi(isodirrec + DR_length_offset, DR_length_size));
2811 fprintf(out, " a %d,",
2812 toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size));
2813 fprintf(out, " ext 0x%x,",
2814 toi(isodirrec + DR_extent_offset, DR_extent_size));
2815 fprintf(out, " s %d,",
2816 toi(isodirrec + DR_size_offset, DR_extent_size));
2817 fprintf(out, " f 0x%02x,",
2818 toi(isodirrec + DR_flags_offset, DR_flags_size));
2819 fprintf(out, " u %d,",
2820 toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size));
2821 fprintf(out, " ilv %d,",
2822 toi(isodirrec + DR_interleave_offset, DR_interleave_size));
2823 fprintf(out, " seq %d,",
2824 toi(isodirrec + DR_volume_sequence_number_offset, DR_volume_sequence_number_size));
2825 fprintf(out, " nl %d:",
2826 toi(isodirrec + DR_name_len_offset, DR_name_len_size));
2827 fprintf(out, " `%.*s'",
2828 toi(isodirrec + DR_name_len_offset, DR_name_len_size), isodirrec + DR_name_offset);