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* Copyright (c) 2003-2007 Tim Kientzle
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* Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se>
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* Copyright (c) 2009 Michihiro NAKAJIMA
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* Redistribution and use in source and binary forms, with or without
8
* modification, are permitted provided that the following conditions
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#include "archive_platform.h"
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__FBSDID("$FreeBSD: head/lib/libarchive/archive_read_support_format_iso9660.c 201246 2009-12-30 05:30:35Z kientzle $");
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/* #include <stdint.h> */ /* See archive_platform.h */
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#include "archive_endian.h"
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#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
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* descriptors include various vendor-specific extensions.
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* * 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)
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#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
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#define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size)
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#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)
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#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
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#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)
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#define PVD_reserved4_size 1
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#define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size)
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#define PVD_application_data_size 512
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#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
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#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
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#define DR_date_size 7
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#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;
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/* Set 1 if this file compressed by paged zlib */
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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. */
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struct archive_string name; /* Pathname */
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char name_continues; /* Non-zero if name continues */
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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;
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struct file_info **files;
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#define ISO9660_MAGIC 0x96609660
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int opt_support_joliet;
311
int opt_support_rockridge;
313
struct archive_string pathname;
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char seenRockridge; /* Set true if RR extensions are used. */
315
char seenSUSP; /* Set true if SUSP is beging used. */
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unsigned char suspOffset;
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struct file_info *rr_moved;
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struct heap_queue re_dirs;
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struct heap_queue cl_files;
322
struct read_ce_queue {
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uint64_t offset;/* Offset of CE on disk. */
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struct file_info *file;
331
int64_t previous_number;
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struct archive_string previous_pathname;
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struct file_info *use_files;
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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;
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static int archive_read_format_iso9660_bid(struct archive_read *);
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static int archive_read_format_iso9660_options(struct archive_read *,
359
const char *, const char *);
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static int archive_read_format_iso9660_cleanup(struct archive_read *);
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static int archive_read_format_iso9660_read_data(struct archive_read *,
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const void **, size_t *, off_t *);
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static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
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static int archive_read_format_iso9660_read_header(struct archive_read *,
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struct archive_entry *);
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static const char *build_pathname(struct archive_string *, struct file_info *);
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static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
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static time_t time_from_tm(struct tm *);
371
static time_t isodate17(const unsigned char *);
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static time_t isodate7(const unsigned char *);
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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);
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static int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
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struct file_info **pfile);
383
static struct file_info *
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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,
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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);
added
removed
src/libarchive/libarchive/archive_read_support_format_iso9660.c
