1228753Smm/*- 2228753Smm * Copyright (c) 2003-2007 Tim Kientzle 3228753Smm * Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se> 4228753Smm * Copyright (c) 2009-2011 Michihiro NAKAJIMA 5228753Smm * All rights reserved. 6228753Smm * 7228753Smm * Redistribution and use in source and binary forms, with or without 8228753Smm * modification, are permitted provided that the following conditions 9228753Smm * are met: 10228753Smm * 1. Redistributions of source code must retain the above copyright 11228753Smm * notice, this list of conditions and the following disclaimer. 12228753Smm * 2. Redistributions in binary form must reproduce the above copyright 13228753Smm * notice, this list of conditions and the following disclaimer in the 14228753Smm * documentation and/or other materials provided with the distribution. 15228753Smm * 16228753Smm * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR 17228753Smm * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18228753Smm * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19228753Smm * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, 20228753Smm * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21228753Smm * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22228753Smm * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23228753Smm * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24228753Smm * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25228753Smm * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26228753Smm */ 27228753Smm 28228753Smm#include "archive_platform.h" 29229592Smm__FBSDID("$FreeBSD$"); 30228753Smm 31228753Smm#ifdef HAVE_ERRNO_H 32228753Smm#include <errno.h> 33228753Smm#endif 34228753Smm/* #include <stdint.h> */ /* See archive_platform.h */ 35228753Smm#include <stdio.h> 36228753Smm#ifdef HAVE_STDLIB_H 37228753Smm#include <stdlib.h> 38228753Smm#endif 39228753Smm#ifdef HAVE_STRING_H 40228753Smm#include <string.h> 41228753Smm#endif 42228753Smm#include <time.h> 43228753Smm#ifdef HAVE_ZLIB_H 44228753Smm#include <zlib.h> 45228753Smm#endif 46228753Smm 47228753Smm#include "archive.h" 48228753Smm#include "archive_endian.h" 49228753Smm#include "archive_entry.h" 50228753Smm#include "archive_private.h" 51228753Smm#include "archive_read_private.h" 52228753Smm#include "archive_string.h" 53228753Smm 54228753Smm/* 55228753Smm * An overview of ISO 9660 format: 56228753Smm * 57228753Smm * Each disk is laid out as follows: 58228753Smm * * 32k reserved for private use 59228753Smm * * Volume descriptor table. Each volume descriptor 60228753Smm * is 2k and specifies basic format information. 61228753Smm * The "Primary Volume Descriptor" (PVD) is defined by the 62228753Smm * standard and should always be present; other volume 63228753Smm * descriptors include various vendor-specific extensions. 64228753Smm * * Files and directories. Each file/dir is specified by 65228753Smm * an "extent" (starting sector and length in bytes). 66228753Smm * Dirs are just files with directory records packed one 67228753Smm * after another. The PVD contains a single dir entry 68228753Smm * specifying the location of the root directory. Everything 69228753Smm * else follows from there. 70228753Smm * 71228753Smm * This module works by first reading the volume descriptors, then 72228753Smm * building a list of directory entries, sorted by starting 73228753Smm * sector. At each step, I look for the earliest dir entry that 74228753Smm * hasn't yet been read, seek forward to that location and read 75228753Smm * that entry. If it's a dir, I slurp in the new dir entries and 76228753Smm * add them to the heap; if it's a regular file, I return the 77228753Smm * corresponding archive_entry and wait for the client to request 78228753Smm * the file body. This strategy allows us to read most compliant 79228753Smm * CDs with a single pass through the data, as required by libarchive. 80228753Smm */ 81228753Smm#define LOGICAL_BLOCK_SIZE 2048 82228753Smm#define SYSTEM_AREA_BLOCK 16 83228753Smm 84228753Smm/* Structure of on-disk primary volume descriptor. */ 85228753Smm#define PVD_type_offset 0 86228753Smm#define PVD_type_size 1 87228753Smm#define PVD_id_offset (PVD_type_offset + PVD_type_size) 88228753Smm#define PVD_id_size 5 89228753Smm#define PVD_version_offset (PVD_id_offset + PVD_id_size) 90228753Smm#define PVD_version_size 1 91228753Smm#define PVD_reserved1_offset (PVD_version_offset + PVD_version_size) 92228753Smm#define PVD_reserved1_size 1 93228753Smm#define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size) 94228753Smm#define PVD_system_id_size 32 95228753Smm#define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size) 96228753Smm#define PVD_volume_id_size 32 97228753Smm#define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size) 98228753Smm#define PVD_reserved2_size 8 99228753Smm#define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size) 100228753Smm#define PVD_volume_space_size_size 8 101228753Smm#define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size) 102228753Smm#define PVD_reserved3_size 32 103228753Smm#define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size) 104228753Smm#define PVD_volume_set_size_size 4 105228753Smm#define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size) 106228753Smm#define PVD_volume_sequence_number_size 4 107228753Smm#define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size) 108228753Smm#define PVD_logical_block_size_size 4 109228753Smm#define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size) 110228753Smm#define PVD_path_table_size_size 8 111228753Smm#define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size) 112228753Smm#define PVD_type_1_path_table_size 4 113228753Smm#define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size) 114228753Smm#define PVD_opt_type_1_path_table_size 4 115228753Smm#define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size) 116228753Smm#define PVD_type_m_path_table_size 4 117228753Smm#define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size) 118228753Smm#define PVD_opt_type_m_path_table_size 4 119228753Smm#define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size) 120228753Smm#define PVD_root_directory_record_size 34 121228753Smm#define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size) 122228753Smm#define PVD_volume_set_id_size 128 123228753Smm#define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size) 124228753Smm#define PVD_publisher_id_size 128 125228753Smm#define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size) 126228753Smm#define PVD_preparer_id_size 128 127228753Smm#define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size) 128228753Smm#define PVD_application_id_size 128 129228753Smm#define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size) 130228753Smm#define PVD_copyright_file_id_size 37 131228753Smm#define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size) 132228753Smm#define PVD_abstract_file_id_size 37 133228753Smm#define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size) 134228753Smm#define PVD_bibliographic_file_id_size 37 135228753Smm#define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size) 136228753Smm#define PVD_creation_date_size 17 137228753Smm#define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size) 138228753Smm#define PVD_modification_date_size 17 139228753Smm#define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size) 140228753Smm#define PVD_expiration_date_size 17 141228753Smm#define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size) 142228753Smm#define PVD_effective_date_size 17 143228753Smm#define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size) 144228753Smm#define PVD_file_structure_version_size 1 145228753Smm#define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size) 146228753Smm#define PVD_reserved4_size 1 147228753Smm#define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size) 148228753Smm#define PVD_application_data_size 512 149228753Smm#define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size) 150228753Smm#define PVD_reserved5_size (2048 - PVD_reserved5_offset) 151228753Smm 152228753Smm/* TODO: It would make future maintenance easier to just hardcode the 153228753Smm * above values. In particular, ECMA119 states the offsets as part of 154228753Smm * the standard. That would eliminate the need for the following check.*/ 155228753Smm#if PVD_reserved5_offset != 1395 156228753Smm#error PVD offset and size definitions are wrong. 157228753Smm#endif 158228753Smm 159228753Smm 160228753Smm/* Structure of optional on-disk supplementary volume descriptor. */ 161228753Smm#define SVD_type_offset 0 162228753Smm#define SVD_type_size 1 163228753Smm#define SVD_id_offset (SVD_type_offset + SVD_type_size) 164228753Smm#define SVD_id_size 5 165228753Smm#define SVD_version_offset (SVD_id_offset + SVD_id_size) 166228753Smm#define SVD_version_size 1 167228753Smm/* ... */ 168228753Smm#define SVD_reserved1_offset 72 169228753Smm#define SVD_reserved1_size 8 170228753Smm#define SVD_volume_space_size_offset 80 171228753Smm#define SVD_volume_space_size_size 8 172228753Smm#define SVD_escape_sequences_offset (SVD_volume_space_size_offset + SVD_volume_space_size_size) 173228753Smm#define SVD_escape_sequences_size 32 174228753Smm/* ... */ 175228753Smm#define SVD_logical_block_size_offset 128 176228753Smm#define SVD_logical_block_size_size 4 177228753Smm#define SVD_type_L_path_table_offset 140 178228753Smm#define SVD_type_M_path_table_offset 148 179228753Smm/* ... */ 180228753Smm#define SVD_root_directory_record_offset 156 181228753Smm#define SVD_root_directory_record_size 34 182228753Smm#define SVD_file_structure_version_offset 881 183228753Smm#define SVD_reserved2_offset 882 184228753Smm#define SVD_reserved2_size 1 185228753Smm#define SVD_reserved3_offset 1395 186228753Smm#define SVD_reserved3_size 653 187228753Smm/* ... */ 188228753Smm/* FIXME: validate correctness of last SVD entry offset. */ 189228753Smm 190228753Smm/* Structure of an on-disk directory record. */ 191228753Smm/* Note: ISO9660 stores each multi-byte integer twice, once in 192228753Smm * each byte order. The sizes here are the size of just one 193228753Smm * of the two integers. (This is why the offset of a field isn't 194228753Smm * the same as the offset+size of the previous field.) */ 195228753Smm#define DR_length_offset 0 196228753Smm#define DR_length_size 1 197228753Smm#define DR_ext_attr_length_offset 1 198228753Smm#define DR_ext_attr_length_size 1 199228753Smm#define DR_extent_offset 2 200228753Smm#define DR_extent_size 4 201228753Smm#define DR_size_offset 10 202228753Smm#define DR_size_size 4 203228753Smm#define DR_date_offset 18 204228753Smm#define DR_date_size 7 205228753Smm#define DR_flags_offset 25 206228753Smm#define DR_flags_size 1 207228753Smm#define DR_file_unit_size_offset 26 208228753Smm#define DR_file_unit_size_size 1 209228753Smm#define DR_interleave_offset 27 210228753Smm#define DR_interleave_size 1 211228753Smm#define DR_volume_sequence_number_offset 28 212228753Smm#define DR_volume_sequence_number_size 2 213228753Smm#define DR_name_len_offset 32 214228753Smm#define DR_name_len_size 1 215228753Smm#define DR_name_offset 33 216228753Smm 217228753Smm#ifdef HAVE_ZLIB_H 218228753Smmstatic const unsigned char zisofs_magic[8] = { 219228753Smm 0x37, 0xE4, 0x53, 0x96, 0xC9, 0xDB, 0xD6, 0x07 220228753Smm}; 221228753Smm 222228753Smmstruct zisofs { 223228753Smm /* Set 1 if this file compressed by paged zlib */ 224228753Smm int pz; 225228753Smm int pz_log2_bs; /* Log2 of block size */ 226228753Smm uint64_t pz_uncompressed_size; 227228753Smm 228228753Smm int initialized; 229228753Smm unsigned char *uncompressed_buffer; 230228753Smm size_t uncompressed_buffer_size; 231228753Smm 232228753Smm uint32_t pz_offset; 233228753Smm unsigned char header[16]; 234228753Smm size_t header_avail; 235228753Smm int header_passed; 236228753Smm unsigned char *block_pointers; 237228753Smm size_t block_pointers_alloc; 238228753Smm size_t block_pointers_size; 239228753Smm size_t block_pointers_avail; 240228753Smm size_t block_off; 241228753Smm uint32_t block_avail; 242228753Smm 243228753Smm z_stream stream; 244228753Smm int stream_valid; 245228753Smm}; 246228753Smm#else 247228753Smmstruct zisofs { 248228753Smm /* Set 1 if this file compressed by paged zlib */ 249228753Smm int pz; 250228753Smm}; 251228753Smm#endif 252228753Smm 253228753Smmstruct content { 254228753Smm uint64_t offset;/* Offset on disk. */ 255228753Smm uint64_t size; /* File size in bytes. */ 256228753Smm struct content *next; 257228753Smm}; 258228753Smm 259228753Smm/* In-memory storage for a directory record. */ 260228753Smmstruct file_info { 261228753Smm struct file_info *use_next; 262228753Smm struct file_info *parent; 263228753Smm struct file_info *next; 264228753Smm struct file_info *re_next; 265228753Smm int subdirs; 266228753Smm uint64_t key; /* Heap Key. */ 267228753Smm uint64_t offset; /* Offset on disk. */ 268228753Smm uint64_t size; /* File size in bytes. */ 269228753Smm uint32_t ce_offset; /* Offset of CE. */ 270228753Smm uint32_t ce_size; /* Size of CE. */ 271228753Smm char rr_moved; /* Flag to rr_moved. */ 272228753Smm char rr_moved_has_re_only; 273228753Smm char re; /* Having RRIP "RE" extension. */ 274228753Smm char re_descendant; 275228753Smm uint64_t cl_offset; /* Having RRIP "CL" extension. */ 276228753Smm int birthtime_is_set; 277228753Smm time_t birthtime; /* File created time. */ 278228753Smm time_t mtime; /* File last modified time. */ 279228753Smm time_t atime; /* File last accessed time. */ 280228753Smm time_t ctime; /* File attribute change time. */ 281228753Smm uint64_t rdev; /* Device number. */ 282228753Smm mode_t mode; 283228753Smm uid_t uid; 284228753Smm gid_t gid; 285228753Smm int64_t number; 286228753Smm int nlinks; 287228753Smm struct archive_string name; /* Pathname */ 288228753Smm char name_continues; /* Non-zero if name continues */ 289228753Smm struct archive_string symlink; 290228753Smm char symlink_continues; /* Non-zero if link continues */ 291228753Smm /* Set 1 if this file compressed by paged zlib(zisofs) */ 292228753Smm int pz; 293228753Smm int pz_log2_bs; /* Log2 of block size */ 294228753Smm uint64_t pz_uncompressed_size; 295228753Smm /* Set 1 if this file is multi extent. */ 296228753Smm int multi_extent; 297228753Smm struct { 298228753Smm struct content *first; 299228753Smm struct content **last; 300228753Smm } contents; 301228753Smm struct { 302228753Smm struct file_info *first; 303228753Smm struct file_info **last; 304228753Smm } rede_files; 305228753Smm}; 306228753Smm 307228753Smmstruct heap_queue { 308228753Smm struct file_info **files; 309228753Smm int allocated; 310228753Smm int used; 311228753Smm}; 312228753Smm 313228753Smmstruct iso9660 { 314228753Smm int magic; 315228753Smm#define ISO9660_MAGIC 0x96609660 316228753Smm 317228753Smm int opt_support_joliet; 318228753Smm int opt_support_rockridge; 319228753Smm 320228753Smm struct archive_string pathname; 321228753Smm char seenRockridge; /* Set true if RR extensions are used. */ 322228753Smm char seenSUSP; /* Set true if SUSP is beging used. */ 323228753Smm char seenJoliet; 324228753Smm 325228753Smm unsigned char suspOffset; 326228753Smm struct file_info *rr_moved; 327228753Smm struct read_ce_queue { 328228753Smm struct read_ce_req { 329228753Smm uint64_t offset;/* Offset of CE on disk. */ 330228753Smm struct file_info *file; 331228753Smm } *reqs; 332228753Smm int cnt; 333228753Smm int allocated; 334228753Smm } read_ce_req; 335228753Smm 336228753Smm int64_t previous_number; 337228753Smm struct archive_string previous_pathname; 338228753Smm 339228753Smm struct file_info *use_files; 340228753Smm struct heap_queue pending_files; 341228753Smm struct { 342228753Smm struct file_info *first; 343228753Smm struct file_info **last; 344228753Smm } cache_files; 345228753Smm struct { 346228753Smm struct file_info *first; 347228753Smm struct file_info **last; 348228753Smm } re_files; 349228753Smm 350228753Smm uint64_t current_position; 351228753Smm ssize_t logical_block_size; 352228753Smm uint64_t volume_size; /* Total size of volume in bytes. */ 353228753Smm int32_t volume_block;/* Total size of volume in logical blocks. */ 354228753Smm 355228753Smm struct vd { 356228753Smm int location; /* Location of Extent. */ 357228753Smm uint32_t size; 358228753Smm } primary, joliet; 359228753Smm 360228753Smm off_t entry_sparse_offset; 361228753Smm int64_t entry_bytes_remaining; 362228753Smm struct zisofs entry_zisofs; 363228753Smm struct content *entry_content; 364228753Smm}; 365228753Smm 366228753Smmstatic int archive_read_format_iso9660_bid(struct archive_read *); 367228753Smmstatic int archive_read_format_iso9660_options(struct archive_read *, 368228753Smm const char *, const char *); 369228753Smmstatic int archive_read_format_iso9660_cleanup(struct archive_read *); 370228753Smmstatic int archive_read_format_iso9660_read_data(struct archive_read *, 371228753Smm const void **, size_t *, off_t *); 372228753Smmstatic int archive_read_format_iso9660_read_data_skip(struct archive_read *); 373228753Smmstatic int archive_read_format_iso9660_read_header(struct archive_read *, 374228753Smm struct archive_entry *); 375228753Smmstatic const char *build_pathname(struct archive_string *, struct file_info *); 376228753Smm#if DEBUG 377228753Smmstatic void dump_isodirrec(FILE *, const unsigned char *isodirrec); 378228753Smm#endif 379228753Smmstatic time_t time_from_tm(struct tm *); 380228753Smmstatic time_t isodate17(const unsigned char *); 381228753Smmstatic time_t isodate7(const unsigned char *); 382228753Smmstatic int isBootRecord(struct iso9660 *, const unsigned char *); 383228753Smmstatic int isVolumePartition(struct iso9660 *, const unsigned char *); 384228753Smmstatic int isVDSetTerminator(struct iso9660 *, const unsigned char *); 385228753Smmstatic int isJolietSVD(struct iso9660 *, const unsigned char *); 386228753Smmstatic int isSVD(struct iso9660 *, const unsigned char *); 387228753Smmstatic int isEVD(struct iso9660 *, const unsigned char *); 388228753Smmstatic int isPVD(struct iso9660 *, const unsigned char *); 389228753Smmstatic int next_cache_entry(struct archive_read *, struct iso9660 *, 390228753Smm struct file_info **); 391228753Smmstatic int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660, 392228753Smm struct file_info **pfile); 393228753Smmstatic struct file_info * 394228753Smm parse_file_info(struct archive_read *a, 395228753Smm struct file_info *parent, const unsigned char *isodirrec); 396228753Smmstatic int parse_rockridge(struct archive_read *a, 397228753Smm struct file_info *file, const unsigned char *start, 398228753Smm const unsigned char *end); 399228753Smmstatic int register_CE(struct archive_read *a, int32_t location, 400228753Smm struct file_info *file); 401228753Smmstatic int read_CE(struct archive_read *a, struct iso9660 *iso9660); 402228753Smmstatic void parse_rockridge_NM1(struct file_info *, 403228753Smm const unsigned char *, int); 404228753Smmstatic void parse_rockridge_SL1(struct file_info *, 405228753Smm const unsigned char *, int); 406228753Smmstatic void parse_rockridge_TF1(struct file_info *, 407228753Smm const unsigned char *, int); 408228753Smmstatic void parse_rockridge_ZF1(struct file_info *, 409228753Smm const unsigned char *, int); 410228753Smmstatic void register_file(struct iso9660 *, struct file_info *); 411228753Smmstatic void release_files(struct iso9660 *); 412228753Smmstatic unsigned toi(const void *p, int n); 413228753Smmstatic inline void re_add_entry(struct iso9660 *, struct file_info *); 414228753Smmstatic inline struct file_info * re_get_entry(struct iso9660 *); 415228753Smmstatic inline int rede_add_entry(struct file_info *); 416228753Smmstatic inline struct file_info * rede_get_entry(struct file_info *); 417228753Smmstatic inline void cache_add_entry(struct iso9660 *iso9660, 418228753Smm struct file_info *file); 419228753Smmstatic inline struct file_info *cache_get_entry(struct iso9660 *iso9660); 420228753Smmstatic void heap_add_entry(struct heap_queue *heap, 421228753Smm struct file_info *file, uint64_t key); 422228753Smmstatic struct file_info *heap_get_entry(struct heap_queue *heap); 423228753Smm 424228753Smm#define add_entry(iso9660, file) \ 425228753Smm heap_add_entry(&((iso9660)->pending_files), file, file->offset) 426228753Smm#define next_entry(iso9660) \ 427228753Smm heap_get_entry(&((iso9660)->pending_files)) 428228753Smm 429228753Smmint 430228753Smmarchive_read_support_format_iso9660(struct archive *_a) 431228753Smm{ 432228753Smm struct archive_read *a = (struct archive_read *)_a; 433228753Smm struct iso9660 *iso9660; 434228753Smm int r; 435228753Smm 436228753Smm iso9660 = (struct iso9660 *)malloc(sizeof(*iso9660)); 437228753Smm if (iso9660 == NULL) { 438228753Smm archive_set_error(&a->archive, ENOMEM, "Can't allocate iso9660 data"); 439228753Smm return (ARCHIVE_FATAL); 440228753Smm } 441228753Smm memset(iso9660, 0, sizeof(*iso9660)); 442228753Smm iso9660->magic = ISO9660_MAGIC; 443228753Smm iso9660->cache_files.first = NULL; 444228753Smm iso9660->cache_files.last = &(iso9660->cache_files.first); 445228753Smm iso9660->re_files.first = NULL; 446228753Smm iso9660->re_files.last = &(iso9660->re_files.first); 447228753Smm /* Enable to support Joliet extensions by default. */ 448228753Smm iso9660->opt_support_joliet = 1; 449228753Smm /* Enable to support Rock Ridge extensions by default. */ 450228753Smm iso9660->opt_support_rockridge = 1; 451228753Smm 452228753Smm r = __archive_read_register_format(a, 453228753Smm iso9660, 454228753Smm "iso9660", 455228753Smm archive_read_format_iso9660_bid, 456228753Smm archive_read_format_iso9660_options, 457228753Smm archive_read_format_iso9660_read_header, 458228753Smm archive_read_format_iso9660_read_data, 459228753Smm archive_read_format_iso9660_read_data_skip, 460228753Smm archive_read_format_iso9660_cleanup); 461228753Smm 462228753Smm if (r != ARCHIVE_OK) { 463228753Smm free(iso9660); 464228753Smm return (r); 465228753Smm } 466228753Smm return (ARCHIVE_OK); 467228753Smm} 468228753Smm 469228753Smm 470228753Smmstatic int 471228753Smmarchive_read_format_iso9660_bid(struct archive_read *a) 472228753Smm{ 473228753Smm struct iso9660 *iso9660; 474228753Smm ssize_t bytes_read; 475228753Smm const void *h; 476228753Smm const unsigned char *p; 477228753Smm int seenTerminator; 478228753Smm 479228753Smm iso9660 = (struct iso9660 *)(a->format->data); 480228753Smm 481228753Smm /* 482228753Smm * Skip the first 32k (reserved area) and get the first 483228753Smm * 8 sectors of the volume descriptor table. Of course, 484228753Smm * if the I/O layer gives us more, we'll take it. 485228753Smm */ 486228753Smm#define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE) 487228753Smm h = __archive_read_ahead(a, 488228753Smm RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE, 489228753Smm &bytes_read); 490228753Smm if (h == NULL) 491228753Smm return (-1); 492228753Smm p = (const unsigned char *)h; 493228753Smm 494228753Smm /* Skip the reserved area. */ 495228753Smm bytes_read -= RESERVED_AREA; 496228753Smm p += RESERVED_AREA; 497228753Smm 498228753Smm /* Check each volume descriptor. */ 499228753Smm seenTerminator = 0; 500228753Smm for (; bytes_read > LOGICAL_BLOCK_SIZE; 501228753Smm bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) { 502228753Smm /* Do not handle undefined Volume Descriptor Type. */ 503228753Smm if (p[0] >= 4 && p[0] <= 254) 504228753Smm return (0); 505228753Smm /* Standard Identifier must be "CD001" */ 506228753Smm if (memcmp(p + 1, "CD001", 5) != 0) 507228753Smm return (0); 508228753Smm if (!iso9660->primary.location) { 509228753Smm if (isPVD(iso9660, p)) 510228753Smm continue; 511228753Smm } 512228753Smm if (!iso9660->joliet.location) { 513228753Smm if (isJolietSVD(iso9660, p)) 514228753Smm continue; 515228753Smm } 516228753Smm if (isBootRecord(iso9660, p)) 517228753Smm continue; 518228753Smm if (isEVD(iso9660, p)) 519228753Smm continue; 520228753Smm if (isSVD(iso9660, p)) 521228753Smm continue; 522228753Smm if (isVolumePartition(iso9660, p)) 523228753Smm continue; 524228753Smm if (isVDSetTerminator(iso9660, p)) { 525228753Smm seenTerminator = 1; 526228753Smm break; 527228753Smm } 528228753Smm return (0); 529228753Smm } 530228753Smm /* 531228753Smm * ISO 9660 format must have Primary Volume Descriptor and 532228753Smm * Volume Descriptor Set Terminator. 533228753Smm */ 534228753Smm if (seenTerminator && iso9660->primary.location > 16) 535228753Smm return (48); 536228753Smm 537228753Smm /* We didn't find a valid PVD; return a bid of zero. */ 538228753Smm return (0); 539228753Smm} 540228753Smm 541228753Smmstatic int 542228753Smmarchive_read_format_iso9660_options(struct archive_read *a, 543228753Smm const char *key, const char *val) 544228753Smm{ 545228753Smm struct iso9660 *iso9660; 546228753Smm 547228753Smm iso9660 = (struct iso9660 *)(a->format->data); 548228753Smm 549228753Smm if (strcmp(key, "joliet") == 0) { 550228753Smm if (val == NULL || strcmp(val, "off") == 0 || 551228753Smm strcmp(val, "ignore") == 0 || 552228753Smm strcmp(val, "disable") == 0 || 553228753Smm strcmp(val, "0") == 0) 554228753Smm iso9660->opt_support_joliet = 0; 555228753Smm else 556228753Smm iso9660->opt_support_joliet = 1; 557228753Smm return (ARCHIVE_OK); 558228753Smm } 559228753Smm if (strcmp(key, "rockridge") == 0 || 560228753Smm strcmp(key, "Rockridge") == 0) { 561228753Smm iso9660->opt_support_rockridge = val != NULL; 562228753Smm return (ARCHIVE_OK); 563228753Smm } 564228753Smm 565228753Smm /* Note: The "warn" return is just to inform the options 566228753Smm * supervisor that we didn't handle it. It will generate 567228753Smm * a suitable error if noone used this option. */ 568228753Smm return (ARCHIVE_WARN); 569228753Smm} 570228753Smm 571228753Smmstatic int 572228753SmmisBootRecord(struct iso9660 *iso9660, const unsigned char *h) 573228753Smm{ 574228753Smm (void)iso9660; /* UNUSED */ 575228753Smm 576228753Smm /* Type of the Volume Descriptor Boot Record must be 0. */ 577228753Smm if (h[0] != 0) 578228753Smm return (0); 579228753Smm 580228753Smm /* Volume Descriptor Version must be 1. */ 581228753Smm if (h[6] != 1) 582228753Smm return (0); 583228753Smm 584228753Smm return (1); 585228753Smm} 586228753Smm 587228753Smmstatic int 588228753SmmisVolumePartition(struct iso9660 *iso9660, const unsigned char *h) 589228753Smm{ 590228753Smm int32_t location; 591228753Smm 592228753Smm /* Type of the Volume Partition Descriptor must be 3. */ 593228753Smm if (h[0] != 3) 594228753Smm return (0); 595228753Smm 596228753Smm /* Volume Descriptor Version must be 1. */ 597228753Smm if (h[6] != 1) 598228753Smm return (0); 599228753Smm /* Unused Field */ 600228753Smm if (h[7] != 0) 601228753Smm return (0); 602228753Smm 603228753Smm location = archive_le32dec(h + 72); 604228753Smm if (location <= SYSTEM_AREA_BLOCK || 605228753Smm location >= iso9660->volume_block) 606228753Smm return (0); 607228753Smm if ((uint32_t)location != archive_be32dec(h + 76)) 608228753Smm return (0); 609228753Smm 610228753Smm return (1); 611228753Smm} 612228753Smm 613228753Smmstatic int 614228753SmmisVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h) 615228753Smm{ 616228753Smm int i; 617228753Smm 618228753Smm (void)iso9660; /* UNUSED */ 619228753Smm 620228753Smm /* Type of the Volume Descriptor Set Terminator must be 255. */ 621228753Smm if (h[0] != 255) 622228753Smm return (0); 623228753Smm 624228753Smm /* Volume Descriptor Version must be 1. */ 625228753Smm if (h[6] != 1) 626228753Smm return (0); 627228753Smm 628228753Smm /* Reserved field must be 0. */ 629228753Smm for (i = 7; i < 2048; ++i) 630228753Smm if (h[i] != 0) 631228753Smm return (0); 632228753Smm 633228753Smm return (1); 634228753Smm} 635228753Smm 636228753Smmstatic int 637228753SmmisJolietSVD(struct iso9660 *iso9660, const unsigned char *h) 638228753Smm{ 639228753Smm const unsigned char *p; 640228753Smm ssize_t logical_block_size; 641228753Smm int32_t volume_block; 642228753Smm 643228753Smm /* Check if current sector is a kind of Supplementary Volume 644228753Smm * Descriptor. */ 645228753Smm if (!isSVD(iso9660, h)) 646228753Smm return (0); 647228753Smm 648228753Smm /* FIXME: do more validations according to joliet spec. */ 649228753Smm 650228753Smm /* check if this SVD contains joliet extension! */ 651228753Smm p = h + SVD_escape_sequences_offset; 652228753Smm /* N.B. Joliet spec says p[1] == '\\', but.... */ 653228753Smm if (p[0] == '%' && p[1] == '/') { 654228753Smm int level = 0; 655228753Smm 656228753Smm if (p[2] == '@') 657228753Smm level = 1; 658228753Smm else if (p[2] == 'C') 659228753Smm level = 2; 660228753Smm else if (p[2] == 'E') 661228753Smm level = 3; 662228753Smm else /* not joliet */ 663228753Smm return (0); 664228753Smm 665228753Smm iso9660->seenJoliet = level; 666228753Smm 667228753Smm } else /* not joliet */ 668228753Smm return (0); 669228753Smm 670228753Smm logical_block_size = 671228753Smm archive_le16dec(h + SVD_logical_block_size_offset); 672228753Smm volume_block = archive_le32dec(h + SVD_volume_space_size_offset); 673228753Smm 674228753Smm iso9660->logical_block_size = logical_block_size; 675228753Smm iso9660->volume_block = volume_block; 676228753Smm iso9660->volume_size = logical_block_size * (uint64_t)volume_block; 677228753Smm /* Read Root Directory Record in Volume Descriptor. */ 678228753Smm p = h + SVD_root_directory_record_offset; 679228753Smm iso9660->joliet.location = archive_le32dec(p + DR_extent_offset); 680228753Smm iso9660->joliet.size = archive_le32dec(p + DR_size_offset); 681228753Smm 682228753Smm return (48); 683228753Smm} 684228753Smm 685228753Smmstatic int 686228753SmmisSVD(struct iso9660 *iso9660, const unsigned char *h) 687228753Smm{ 688228753Smm const unsigned char *p; 689228753Smm ssize_t logical_block_size; 690228753Smm int32_t volume_block; 691228753Smm int32_t location; 692228753Smm int i; 693228753Smm 694228753Smm (void)iso9660; /* UNUSED */ 695228753Smm 696228753Smm /* Type 2 means it's a SVD. */ 697228753Smm if (h[SVD_type_offset] != 2) 698228753Smm return (0); 699228753Smm 700228753Smm /* Reserved field must be 0. */ 701228753Smm for (i = 0; i < SVD_reserved1_size; ++i) 702228753Smm if (h[SVD_reserved1_offset + i] != 0) 703228753Smm return (0); 704228753Smm for (i = 0; i < SVD_reserved2_size; ++i) 705228753Smm if (h[SVD_reserved2_offset + i] != 0) 706228753Smm return (0); 707228753Smm for (i = 0; i < SVD_reserved3_size; ++i) 708228753Smm if (h[SVD_reserved3_offset + i] != 0) 709228753Smm return (0); 710228753Smm 711228753Smm /* File structure version must be 1 for ISO9660/ECMA119. */ 712228753Smm if (h[SVD_file_structure_version_offset] != 1) 713228753Smm return (0); 714228753Smm 715228753Smm logical_block_size = 716228753Smm archive_le16dec(h + SVD_logical_block_size_offset); 717228753Smm if (logical_block_size <= 0) 718228753Smm return (0); 719228753Smm 720228753Smm volume_block = archive_le32dec(h + SVD_volume_space_size_offset); 721228753Smm if (volume_block <= SYSTEM_AREA_BLOCK+4) 722228753Smm return (0); 723228753Smm 724228753Smm /* Location of Occurrence of Type L Path Table must be 725228753Smm * available location, 726228753Smm * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 727228753Smm location = archive_le32dec(h+SVD_type_L_path_table_offset); 728228753Smm if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) 729228753Smm return (0); 730228753Smm 731228753Smm /* The Type M Path Table must be at a valid location (WinISO 732228753Smm * and probably other programs omit this, so we allow zero) 733228753Smm * 734228753Smm * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 735228753Smm location = archive_be32dec(h+SVD_type_M_path_table_offset); 736228753Smm if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) 737228753Smm || location >= volume_block) 738228753Smm return (0); 739228753Smm 740228753Smm /* Read Root Directory Record in Volume Descriptor. */ 741228753Smm p = h + SVD_root_directory_record_offset; 742228753Smm if (p[DR_length_offset] != 34) 743228753Smm return (0); 744228753Smm 745228753Smm return (48); 746228753Smm} 747228753Smm 748228753Smmstatic int 749228753SmmisEVD(struct iso9660 *iso9660, const unsigned char *h) 750228753Smm{ 751228753Smm const unsigned char *p; 752228753Smm ssize_t logical_block_size; 753228753Smm int32_t volume_block; 754228753Smm int32_t location; 755228753Smm int i; 756228753Smm 757228753Smm (void)iso9660; /* UNUSED */ 758228753Smm 759228753Smm /* Type of the Enhanced Volume Descriptor must be 2. */ 760228753Smm if (h[PVD_type_offset] != 2) 761228753Smm return (0); 762228753Smm 763228753Smm /* EVD version must be 2. */ 764228753Smm if (h[PVD_version_offset] != 2) 765228753Smm return (0); 766228753Smm 767228753Smm /* Reserved field must be 0. */ 768228753Smm if (h[PVD_reserved1_offset] != 0) 769228753Smm return (0); 770228753Smm 771228753Smm /* Reserved field must be 0. */ 772228753Smm for (i = 0; i < PVD_reserved2_size; ++i) 773228753Smm if (h[PVD_reserved2_offset + i] != 0) 774228753Smm return (0); 775228753Smm 776228753Smm /* Reserved field must be 0. */ 777228753Smm for (i = 0; i < PVD_reserved3_size; ++i) 778228753Smm if (h[PVD_reserved3_offset + i] != 0) 779228753Smm return (0); 780228753Smm 781228753Smm /* Logical block size must be > 0. */ 782228753Smm /* I've looked at Ecma 119 and can't find any stronger 783228753Smm * restriction on this field. */ 784228753Smm logical_block_size = 785228753Smm archive_le16dec(h + PVD_logical_block_size_offset); 786228753Smm if (logical_block_size <= 0) 787228753Smm return (0); 788228753Smm 789228753Smm volume_block = 790228753Smm archive_le32dec(h + PVD_volume_space_size_offset); 791228753Smm if (volume_block <= SYSTEM_AREA_BLOCK+4) 792228753Smm return (0); 793228753Smm 794228753Smm /* File structure version must be 2 for ISO9660:1999. */ 795228753Smm if (h[PVD_file_structure_version_offset] != 2) 796228753Smm return (0); 797228753Smm 798228753Smm /* Location of Occurrence of Type L Path Table must be 799228753Smm * available location, 800228753Smm * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 801228753Smm location = archive_le32dec(h+PVD_type_1_path_table_offset); 802228753Smm if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) 803228753Smm return (0); 804228753Smm 805228753Smm /* Location of Occurrence of Type M Path Table must be 806228753Smm * available location, 807228753Smm * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 808228753Smm location = archive_be32dec(h+PVD_type_m_path_table_offset); 809228753Smm if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) 810228753Smm || location >= volume_block) 811228753Smm return (0); 812228753Smm 813228753Smm /* Reserved field must be 0. */ 814228753Smm for (i = 0; i < PVD_reserved4_size; ++i) 815228753Smm if (h[PVD_reserved4_offset + i] != 0) 816228753Smm return (0); 817228753Smm 818228753Smm /* Reserved field must be 0. */ 819228753Smm for (i = 0; i < PVD_reserved5_size; ++i) 820228753Smm if (h[PVD_reserved5_offset + i] != 0) 821228753Smm return (0); 822228753Smm 823228753Smm /* Read Root Directory Record in Volume Descriptor. */ 824228753Smm p = h + PVD_root_directory_record_offset; 825228753Smm if (p[DR_length_offset] != 34) 826228753Smm return (0); 827228753Smm 828228753Smm return (48); 829228753Smm} 830228753Smm 831228753Smmstatic int 832228753SmmisPVD(struct iso9660 *iso9660, const unsigned char *h) 833228753Smm{ 834228753Smm const unsigned char *p; 835228753Smm ssize_t logical_block_size; 836228753Smm int32_t volume_block; 837228753Smm int32_t location; 838228753Smm int i; 839228753Smm 840228753Smm /* Type of the Primary Volume Descriptor must be 1. */ 841228753Smm if (h[PVD_type_offset] != 1) 842228753Smm return (0); 843228753Smm 844228753Smm /* PVD version must be 1. */ 845228753Smm if (h[PVD_version_offset] != 1) 846228753Smm return (0); 847228753Smm 848228753Smm /* Reserved field must be 0. */ 849228753Smm if (h[PVD_reserved1_offset] != 0) 850228753Smm return (0); 851228753Smm 852228753Smm /* Reserved field must be 0. */ 853228753Smm for (i = 0; i < PVD_reserved2_size; ++i) 854228753Smm if (h[PVD_reserved2_offset + i] != 0) 855228753Smm return (0); 856228753Smm 857228753Smm /* Reserved field must be 0. */ 858228753Smm for (i = 0; i < PVD_reserved3_size; ++i) 859228753Smm if (h[PVD_reserved3_offset + i] != 0) 860228753Smm return (0); 861228753Smm 862228753Smm /* Logical block size must be > 0. */ 863228753Smm /* I've looked at Ecma 119 and can't find any stronger 864228753Smm * restriction on this field. */ 865228753Smm logical_block_size = 866228753Smm archive_le16dec(h + PVD_logical_block_size_offset); 867228753Smm if (logical_block_size <= 0) 868228753Smm return (0); 869228753Smm 870228753Smm volume_block = archive_le32dec(h + PVD_volume_space_size_offset); 871228753Smm if (volume_block <= SYSTEM_AREA_BLOCK+4) 872228753Smm return (0); 873228753Smm 874228753Smm /* File structure version must be 1 for ISO9660/ECMA119. */ 875228753Smm if (h[PVD_file_structure_version_offset] != 1) 876228753Smm return (0); 877228753Smm 878228753Smm /* Location of Occurrence of Type L Path Table must be 879228753Smm * available location, 880228753Smm * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 881228753Smm location = archive_le32dec(h+PVD_type_1_path_table_offset); 882228753Smm if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) 883228753Smm return (0); 884228753Smm 885228753Smm /* The Type M Path Table must also be at a valid location 886228753Smm * (although ECMA 119 requires a Type M Path Table, WinISO and 887228753Smm * probably other programs omit it, so we permit a zero here) 888228753Smm * 889228753Smm * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ 890228753Smm location = archive_be32dec(h+PVD_type_m_path_table_offset); 891228753Smm if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) 892228753Smm || location >= volume_block) 893228753Smm return (0); 894228753Smm 895228753Smm /* Reserved field must be 0. */ 896229592Smm /* FreeBSD: makefs erroneously created images with 0x20 */ 897228753Smm for (i = 0; i < PVD_reserved4_size; ++i) 898229592Smm if (h[PVD_reserved4_offset + i] != 0 && 899229592Smm h[PVD_reserved4_offset + i] != 32) 900228753Smm return (0); 901228753Smm 902228753Smm /* Reserved field must be 0. */ 903228753Smm for (i = 0; i < PVD_reserved5_size; ++i) 904228753Smm if (h[PVD_reserved5_offset + i] != 0) 905228753Smm return (0); 906228753Smm 907228753Smm /* XXX TODO: Check other values for sanity; reject more 908228753Smm * malformed PVDs. XXX */ 909228753Smm 910228753Smm /* Read Root Directory Record in Volume Descriptor. */ 911228753Smm p = h + PVD_root_directory_record_offset; 912228753Smm if (p[DR_length_offset] != 34) 913228753Smm return (0); 914228753Smm 915228753Smm iso9660->logical_block_size = logical_block_size; 916228753Smm iso9660->volume_block = volume_block; 917228753Smm iso9660->volume_size = logical_block_size * (uint64_t)volume_block; 918228753Smm iso9660->primary.location = archive_le32dec(p + DR_extent_offset); 919228753Smm iso9660->primary.size = archive_le32dec(p + DR_size_offset); 920228753Smm 921228753Smm return (48); 922228753Smm} 923228753Smm 924228753Smmstatic int 925228753Smmread_children(struct archive_read *a, struct file_info *parent) 926228753Smm{ 927228753Smm struct iso9660 *iso9660; 928228753Smm const unsigned char *b, *p; 929228753Smm struct file_info *multi; 930228753Smm size_t step; 931228753Smm 932228753Smm iso9660 = (struct iso9660 *)(a->format->data); 933228753Smm if (iso9660->current_position > parent->offset) { 934228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 935228753Smm "Ignoring out-of-order directory (%s) %jd > %jd", 936228753Smm parent->name.s, 937228753Smm (intmax_t)iso9660->current_position, 938228753Smm (intmax_t)parent->offset); 939228753Smm return (ARCHIVE_WARN); 940228753Smm } 941228753Smm if (parent->offset + parent->size > iso9660->volume_size) { 942228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 943228753Smm "Directory is beyond end-of-media: %s", 944228753Smm parent->name.s); 945228753Smm return (ARCHIVE_WARN); 946228753Smm } 947228753Smm if (iso9660->current_position < parent->offset) { 948228753Smm int64_t skipsize; 949228753Smm 950228753Smm skipsize = parent->offset - iso9660->current_position; 951228753Smm skipsize = __archive_read_skip(a, skipsize); 952228753Smm if (skipsize < 0) 953228753Smm return ((int)skipsize); 954228753Smm iso9660->current_position = parent->offset; 955228753Smm } 956228753Smm 957228753Smm step = ((parent->size + iso9660->logical_block_size -1) / 958228753Smm iso9660->logical_block_size) * iso9660->logical_block_size; 959228753Smm b = __archive_read_ahead(a, step, NULL); 960228753Smm if (b == NULL) { 961228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 962228753Smm "Failed to read full block when scanning " 963228753Smm "ISO9660 directory list"); 964228753Smm return (ARCHIVE_FATAL); 965228753Smm } 966228753Smm __archive_read_consume(a, step); 967228753Smm iso9660->current_position += step; 968228753Smm multi = NULL; 969228753Smm while (step) { 970228753Smm p = b; 971228753Smm b += iso9660->logical_block_size; 972228753Smm step -= iso9660->logical_block_size; 973228753Smm for (; *p != 0 && p < b && p + *p <= b; p += *p) { 974228753Smm struct file_info *child; 975228753Smm 976228753Smm /* N.B.: these special directory identifiers 977228753Smm * are 8 bit "values" even on a 978228753Smm * Joliet CD with UCS-2 (16bit) encoding. 979228753Smm */ 980228753Smm 981228753Smm /* Skip '.' entry. */ 982228753Smm if (*(p + DR_name_len_offset) == 1 983228753Smm && *(p + DR_name_offset) == '\0') 984228753Smm continue; 985228753Smm /* Skip '..' entry. */ 986228753Smm if (*(p + DR_name_len_offset) == 1 987228753Smm && *(p + DR_name_offset) == '\001') 988228753Smm continue; 989228753Smm child = parse_file_info(a, parent, p); 990228753Smm if (child == NULL) 991228753Smm return (ARCHIVE_FATAL); 992228753Smm if (child->cl_offset == 0 && 993228753Smm (child->multi_extent || multi != NULL)) { 994228753Smm struct content *con; 995228753Smm 996228753Smm if (multi == NULL) { 997228753Smm multi = child; 998228753Smm multi->contents.first = NULL; 999228753Smm multi->contents.last = 1000228753Smm &(multi->contents.first); 1001228753Smm } 1002228753Smm con = malloc(sizeof(struct content)); 1003228753Smm if (con == NULL) { 1004228753Smm archive_set_error( 1005228753Smm &a->archive, ENOMEM, 1006228753Smm "No memory for " 1007228753Smm "multi extent"); 1008228753Smm return (ARCHIVE_FATAL); 1009228753Smm } 1010228753Smm con->offset = child->offset; 1011228753Smm con->size = child->size; 1012228753Smm con->next = NULL; 1013228753Smm *multi->contents.last = con; 1014228753Smm multi->contents.last = &(con->next); 1015228753Smm if (multi == child) 1016228753Smm add_entry(iso9660, child); 1017228753Smm else { 1018228753Smm multi->size += child->size; 1019228753Smm if (!child->multi_extent) 1020228753Smm multi = NULL; 1021228753Smm } 1022228753Smm } else 1023228753Smm add_entry(iso9660, child); 1024228753Smm } 1025228753Smm } 1026228753Smm 1027228753Smm /* Read data which recorded by RRIP "CE" extension. */ 1028228753Smm if (read_CE(a, iso9660) != ARCHIVE_OK) 1029228753Smm return (ARCHIVE_FATAL); 1030228753Smm 1031228753Smm return (ARCHIVE_OK); 1032228753Smm} 1033228753Smm 1034228753Smmstatic int 1035228753Smmarchive_read_format_iso9660_read_header(struct archive_read *a, 1036228753Smm struct archive_entry *entry) 1037228753Smm{ 1038228753Smm struct iso9660 *iso9660; 1039228753Smm struct file_info *file; 1040228753Smm int r, rd_r = ARCHIVE_OK; 1041228753Smm 1042228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1043228753Smm 1044228753Smm if (!a->archive.archive_format) { 1045228753Smm a->archive.archive_format = ARCHIVE_FORMAT_ISO9660; 1046228753Smm a->archive.archive_format_name = "ISO9660"; 1047228753Smm } 1048228753Smm 1049228753Smm if (iso9660->current_position == 0) { 1050228753Smm int64_t skipsize; 1051228753Smm struct vd *vd; 1052228753Smm const void *block; 1053228753Smm char seenJoliet; 1054228753Smm 1055228753Smm vd = &(iso9660->primary); 1056228753Smm if (!iso9660->opt_support_joliet) 1057228753Smm iso9660->seenJoliet = 0; 1058228753Smm if (iso9660->seenJoliet && 1059228753Smm vd->location > iso9660->joliet.location) 1060228753Smm /* This condition is unlikely; by way of caution. */ 1061228753Smm vd = &(iso9660->joliet); 1062228753Smm 1063228753Smm skipsize = LOGICAL_BLOCK_SIZE * vd->location; 1064228753Smm skipsize = __archive_read_skip(a, skipsize); 1065228753Smm if (skipsize < 0) 1066228753Smm return ((int)skipsize); 1067228753Smm iso9660->current_position = skipsize; 1068228753Smm 1069228753Smm block = __archive_read_ahead(a, vd->size, NULL); 1070228753Smm if (block == NULL) { 1071228753Smm archive_set_error(&a->archive, 1072228753Smm ARCHIVE_ERRNO_MISC, 1073228753Smm "Failed to read full block when scanning " 1074228753Smm "ISO9660 directory list"); 1075228753Smm return (ARCHIVE_FATAL); 1076228753Smm } 1077228753Smm 1078228753Smm /* 1079228753Smm * While reading Root Directory, flag seenJoliet 1080228753Smm * must be zero to avoid converting special name 1081228753Smm * 0x00(Current Directory) and next byte to UCS2. 1082228753Smm */ 1083228753Smm seenJoliet = iso9660->seenJoliet;/* Save flag. */ 1084228753Smm iso9660->seenJoliet = 0; 1085228753Smm file = parse_file_info(a, NULL, block); 1086228753Smm if (file == NULL) 1087228753Smm return (ARCHIVE_FATAL); 1088228753Smm iso9660->seenJoliet = seenJoliet; 1089228753Smm if (vd == &(iso9660->primary) && iso9660->seenRockridge 1090228753Smm && iso9660->seenJoliet) 1091228753Smm /* 1092228753Smm * If iso image has RockRidge and Joliet, 1093228753Smm * we use RockRidge Extensions. 1094228753Smm */ 1095228753Smm iso9660->seenJoliet = 0; 1096228753Smm if (vd == &(iso9660->primary) && !iso9660->seenRockridge 1097228753Smm && iso9660->seenJoliet) { 1098228753Smm /* Switch reading data from primary to joliet. */ 1099228753Smm vd = &(iso9660->joliet); 1100228753Smm skipsize = LOGICAL_BLOCK_SIZE * vd->location; 1101228753Smm skipsize -= iso9660->current_position; 1102228753Smm skipsize = __archive_read_skip(a, skipsize); 1103228753Smm if (skipsize < 0) 1104228753Smm return ((int)skipsize); 1105228753Smm iso9660->current_position += skipsize; 1106228753Smm 1107228753Smm block = __archive_read_ahead(a, vd->size, NULL); 1108228753Smm if (block == NULL) { 1109228753Smm archive_set_error(&a->archive, 1110228753Smm ARCHIVE_ERRNO_MISC, 1111228753Smm "Failed to read full block when scanning " 1112228753Smm "ISO9660 directory list"); 1113228753Smm return (ARCHIVE_FATAL); 1114228753Smm } 1115228753Smm seenJoliet = iso9660->seenJoliet;/* Save flag. */ 1116228753Smm iso9660->seenJoliet = 0; 1117228753Smm file = parse_file_info(a, NULL, block); 1118228753Smm if (file == NULL) 1119228753Smm return (ARCHIVE_FATAL); 1120228753Smm iso9660->seenJoliet = seenJoliet; 1121228753Smm } 1122228753Smm /* Store the root directory in the pending list. */ 1123228753Smm add_entry(iso9660, file); 1124228753Smm if (iso9660->seenRockridge) { 1125228753Smm a->archive.archive_format = 1126228753Smm ARCHIVE_FORMAT_ISO9660_ROCKRIDGE; 1127228753Smm a->archive.archive_format_name = 1128228753Smm "ISO9660 with Rockridge extensions"; 1129228753Smm } 1130228753Smm } 1131228753Smm 1132228753Smm /* Get the next entry that appears after the current offset. */ 1133228753Smm r = next_entry_seek(a, iso9660, &file); 1134228753Smm if (r != ARCHIVE_OK) 1135228753Smm return (r); 1136228753Smm 1137228753Smm iso9660->entry_bytes_remaining = file->size; 1138228753Smm iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */ 1139228753Smm 1140228753Smm if (file->offset + file->size > iso9660->volume_size) { 1141228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1142228753Smm "File is beyond end-of-media: %s", file->name.s); 1143228753Smm iso9660->entry_bytes_remaining = 0; 1144228753Smm iso9660->entry_sparse_offset = 0; 1145228753Smm return (ARCHIVE_WARN); 1146228753Smm } 1147228753Smm 1148228753Smm /* Set up the entry structure with information about this entry. */ 1149228753Smm archive_entry_set_mode(entry, file->mode); 1150228753Smm archive_entry_set_uid(entry, file->uid); 1151228753Smm archive_entry_set_gid(entry, file->gid); 1152228753Smm archive_entry_set_nlink(entry, file->nlinks); 1153228753Smm if (file->birthtime_is_set) 1154228753Smm archive_entry_set_birthtime(entry, file->birthtime, 0); 1155228753Smm else 1156228753Smm archive_entry_unset_birthtime(entry); 1157228753Smm archive_entry_set_mtime(entry, file->mtime, 0); 1158228753Smm archive_entry_set_ctime(entry, file->ctime, 0); 1159228753Smm archive_entry_set_atime(entry, file->atime, 0); 1160228753Smm /* N.B.: Rock Ridge supports 64-bit device numbers. */ 1161228753Smm archive_entry_set_rdev(entry, (dev_t)file->rdev); 1162228753Smm archive_entry_set_size(entry, iso9660->entry_bytes_remaining); 1163228753Smm archive_string_empty(&iso9660->pathname); 1164228753Smm archive_entry_set_pathname(entry, 1165228753Smm build_pathname(&iso9660->pathname, file)); 1166228753Smm if (file->symlink.s != NULL) 1167228753Smm archive_entry_copy_symlink(entry, file->symlink.s); 1168228753Smm 1169228753Smm /* Note: If the input isn't seekable, we can't rewind to 1170228753Smm * return the same body again, so if the next entry refers to 1171228753Smm * the same data, we have to return it as a hardlink to the 1172228753Smm * original entry. */ 1173228753Smm if (file->number != -1 && 1174228753Smm file->number == iso9660->previous_number) { 1175228753Smm archive_entry_set_hardlink(entry, 1176228753Smm iso9660->previous_pathname.s); 1177228753Smm archive_entry_unset_size(entry); 1178228753Smm iso9660->entry_bytes_remaining = 0; 1179228753Smm iso9660->entry_sparse_offset = 0; 1180228753Smm return (ARCHIVE_OK); 1181228753Smm } 1182228753Smm 1183228753Smm /* Except for the hardlink case above, if the offset of the 1184228753Smm * next entry is before our current position, we can't seek 1185228753Smm * backwards to extract it, so issue a warning. Note that 1186228753Smm * this can only happen if this entry was added to the heap 1187228753Smm * after we passed this offset, that is, only if the directory 1188228753Smm * mentioning this entry is later than the body of the entry. 1189228753Smm * Such layouts are very unusual; most ISO9660 writers lay out 1190228753Smm * and record all directory information first, then store 1191228753Smm * all file bodies. */ 1192228753Smm /* TODO: Someday, libarchive's I/O core will support optional 1193228753Smm * seeking. When that day comes, this code should attempt to 1194228753Smm * seek and only return the error if the seek fails. That 1195228753Smm * will give us support for whacky ISO images that require 1196228753Smm * seeking while retaining the ability to read almost all ISO 1197228753Smm * images in a streaming fashion. */ 1198228753Smm if ((file->mode & AE_IFMT) != AE_IFDIR && 1199228753Smm file->offset < iso9660->current_position) { 1200228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1201228753Smm "Ignoring out-of-order file (%s) %jd < %jd", 1202228753Smm iso9660->pathname.s, 1203228753Smm (intmax_t)file->offset, 1204228753Smm (intmax_t)iso9660->current_position); 1205228753Smm iso9660->entry_bytes_remaining = 0; 1206228753Smm iso9660->entry_sparse_offset = 0; 1207228753Smm return (ARCHIVE_WARN); 1208228753Smm } 1209228753Smm 1210228753Smm /* Initialize zisofs variables. */ 1211228753Smm iso9660->entry_zisofs.pz = file->pz; 1212228753Smm if (file->pz) { 1213228753Smm#ifdef HAVE_ZLIB_H 1214228753Smm struct zisofs *zisofs; 1215228753Smm 1216228753Smm zisofs = &iso9660->entry_zisofs; 1217228753Smm zisofs->initialized = 0; 1218228753Smm zisofs->pz_log2_bs = file->pz_log2_bs; 1219228753Smm zisofs->pz_uncompressed_size = file->pz_uncompressed_size; 1220228753Smm zisofs->pz_offset = 0; 1221228753Smm zisofs->header_avail = 0; 1222228753Smm zisofs->header_passed = 0; 1223228753Smm zisofs->block_pointers_avail = 0; 1224228753Smm#endif 1225228753Smm archive_entry_set_size(entry, file->pz_uncompressed_size); 1226228753Smm } 1227228753Smm 1228228753Smm iso9660->previous_number = file->number; 1229228753Smm archive_strcpy(&iso9660->previous_pathname, iso9660->pathname.s); 1230228753Smm 1231228753Smm /* Reset entry_bytes_remaining if the file is multi extent. */ 1232228753Smm iso9660->entry_content = file->contents.first; 1233228753Smm if (iso9660->entry_content != NULL) 1234228753Smm iso9660->entry_bytes_remaining = iso9660->entry_content->size; 1235228753Smm 1236228753Smm if (archive_entry_filetype(entry) == AE_IFDIR) { 1237228753Smm /* Overwrite nlinks by proper link number which is 1238228753Smm * calculated from number of sub directories. */ 1239228753Smm archive_entry_set_nlink(entry, 2 + file->subdirs); 1240228753Smm /* Directory data has been read completely. */ 1241228753Smm iso9660->entry_bytes_remaining = 0; 1242228753Smm iso9660->entry_sparse_offset = 0; 1243228753Smm } 1244228753Smm 1245228753Smm if (rd_r != ARCHIVE_OK) 1246228753Smm return (rd_r); 1247228753Smm return (ARCHIVE_OK); 1248228753Smm} 1249228753Smm 1250228753Smmstatic int 1251228753Smmarchive_read_format_iso9660_read_data_skip(struct archive_read *a) 1252228753Smm{ 1253228753Smm /* Because read_next_header always does an explicit skip 1254228753Smm * to the next entry, we don't need to do anything here. */ 1255228753Smm (void)a; /* UNUSED */ 1256228753Smm return (ARCHIVE_OK); 1257228753Smm} 1258228753Smm 1259228753Smm#ifdef HAVE_ZLIB_H 1260228753Smm 1261228753Smmstatic int 1262228753Smmzisofs_read_data(struct archive_read *a, 1263228753Smm const void **buff, size_t *size, off_t *offset) 1264228753Smm{ 1265228753Smm struct iso9660 *iso9660; 1266228753Smm struct zisofs *zisofs; 1267228753Smm const unsigned char *p; 1268228753Smm size_t avail; 1269228753Smm ssize_t bytes_read; 1270228753Smm size_t uncompressed_size; 1271228753Smm int r; 1272228753Smm 1273228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1274228753Smm zisofs = &iso9660->entry_zisofs; 1275228753Smm 1276228753Smm p = __archive_read_ahead(a, 1, &bytes_read); 1277228753Smm if (bytes_read <= 0) { 1278228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, 1279228753Smm "Truncated zisofs file body"); 1280228753Smm return (ARCHIVE_FATAL); 1281228753Smm } 1282228753Smm if (bytes_read > iso9660->entry_bytes_remaining) 1283228753Smm bytes_read = iso9660->entry_bytes_remaining; 1284228753Smm avail = bytes_read; 1285228753Smm uncompressed_size = 0; 1286228753Smm 1287228753Smm if (!zisofs->initialized) { 1288228753Smm size_t ceil, xsize; 1289228753Smm 1290228753Smm /* Allocate block pointers buffer. */ 1291228753Smm ceil = (zisofs->pz_uncompressed_size + 1292228753Smm (1LL << zisofs->pz_log2_bs) - 1) 1293228753Smm >> zisofs->pz_log2_bs; 1294228753Smm xsize = (ceil + 1) * 4; 1295228753Smm if (zisofs->block_pointers_alloc < xsize) { 1296228753Smm size_t alloc; 1297228753Smm 1298228753Smm if (zisofs->block_pointers != NULL) 1299228753Smm free(zisofs->block_pointers); 1300228753Smm alloc = ((xsize >> 10) + 1) << 10; 1301228753Smm zisofs->block_pointers = malloc(alloc); 1302228753Smm if (zisofs->block_pointers == NULL) { 1303228753Smm archive_set_error(&a->archive, ENOMEM, 1304228753Smm "No memory for zisofs decompression"); 1305228753Smm return (ARCHIVE_FATAL); 1306228753Smm } 1307228753Smm zisofs->block_pointers_alloc = alloc; 1308228753Smm } 1309228753Smm zisofs->block_pointers_size = xsize; 1310228753Smm 1311228753Smm /* Allocate uncompressed data buffer. */ 1312228753Smm xsize = 1UL << zisofs->pz_log2_bs; 1313228753Smm if (zisofs->uncompressed_buffer_size < xsize) { 1314228753Smm if (zisofs->uncompressed_buffer != NULL) 1315228753Smm free(zisofs->uncompressed_buffer); 1316228753Smm zisofs->uncompressed_buffer = malloc(xsize); 1317228753Smm if (zisofs->uncompressed_buffer == NULL) { 1318228753Smm archive_set_error(&a->archive, ENOMEM, 1319228753Smm "No memory for zisofs decompression"); 1320228753Smm return (ARCHIVE_FATAL); 1321228753Smm } 1322228753Smm } 1323228753Smm zisofs->uncompressed_buffer_size = xsize; 1324228753Smm 1325228753Smm /* 1326228753Smm * Read the file header, and check the magic code of zisofs. 1327228753Smm */ 1328228753Smm if (zisofs->header_avail < sizeof(zisofs->header)) { 1329228753Smm xsize = sizeof(zisofs->header) - zisofs->header_avail; 1330228753Smm if (avail < xsize) 1331228753Smm xsize = avail; 1332228753Smm memcpy(zisofs->header + zisofs->header_avail, p, xsize); 1333228753Smm zisofs->header_avail += xsize; 1334228753Smm avail -= xsize; 1335228753Smm p += xsize; 1336228753Smm } 1337228753Smm if (!zisofs->header_passed && 1338228753Smm zisofs->header_avail == sizeof(zisofs->header)) { 1339228753Smm int err = 0; 1340228753Smm 1341228753Smm if (memcmp(zisofs->header, zisofs_magic, 1342228753Smm sizeof(zisofs_magic)) != 0) 1343228753Smm err = 1; 1344228753Smm if (archive_le32dec(zisofs->header + 8) 1345228753Smm != zisofs->pz_uncompressed_size) 1346228753Smm err = 1; 1347228753Smm if (zisofs->header[12] != 4) 1348228753Smm err = 1; 1349228753Smm if (zisofs->header[13] != zisofs->pz_log2_bs) 1350228753Smm err = 1; 1351228753Smm if (err) { 1352228753Smm archive_set_error(&a->archive, 1353228753Smm ARCHIVE_ERRNO_FILE_FORMAT, 1354228753Smm "Illegal zisofs file body"); 1355228753Smm return (ARCHIVE_FATAL); 1356228753Smm } 1357228753Smm zisofs->header_passed = 1; 1358228753Smm } 1359228753Smm /* 1360228753Smm * Read block pointers. 1361228753Smm */ 1362228753Smm if (zisofs->header_passed && 1363228753Smm zisofs->block_pointers_avail < zisofs->block_pointers_size) { 1364228753Smm xsize = zisofs->block_pointers_size 1365228753Smm - zisofs->block_pointers_avail; 1366228753Smm if (avail < xsize) 1367228753Smm xsize = avail; 1368228753Smm memcpy(zisofs->block_pointers 1369228753Smm + zisofs->block_pointers_avail, p, xsize); 1370228753Smm zisofs->block_pointers_avail += xsize; 1371228753Smm avail -= xsize; 1372228753Smm p += xsize; 1373228753Smm if (zisofs->block_pointers_avail 1374228753Smm == zisofs->block_pointers_size) { 1375228753Smm /* We've got all block pointers and initialize 1376228753Smm * related variables. */ 1377228753Smm zisofs->block_off = 0; 1378228753Smm zisofs->block_avail = 0; 1379228753Smm /* Complete a initialization */ 1380228753Smm zisofs->initialized = 1; 1381228753Smm } 1382228753Smm } 1383228753Smm 1384228753Smm if (!zisofs->initialized) 1385228753Smm goto next_data; /* We need more datas. */ 1386228753Smm } 1387228753Smm 1388228753Smm /* 1389228753Smm * Get block offsets from block pointers. 1390228753Smm */ 1391228753Smm if (zisofs->block_avail == 0) { 1392228753Smm uint32_t bst, bed; 1393228753Smm 1394228753Smm if (zisofs->block_off + 4 >= zisofs->block_pointers_size) { 1395228753Smm /* There isn't a pair of offsets. */ 1396228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, 1397228753Smm "Illegal zisofs block pointers"); 1398228753Smm return (ARCHIVE_FATAL); 1399228753Smm } 1400228753Smm bst = archive_le32dec(zisofs->block_pointers + zisofs->block_off); 1401228753Smm if (bst != zisofs->pz_offset + (bytes_read - avail)) { 1402228753Smm /* TODO: Should we seek offset of current file by bst ? */ 1403228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, 1404228753Smm "Illegal zisofs block pointers(cannot seek)"); 1405228753Smm return (ARCHIVE_FATAL); 1406228753Smm } 1407228753Smm bed = archive_le32dec( 1408228753Smm zisofs->block_pointers + zisofs->block_off + 4); 1409228753Smm if (bed < bst) { 1410228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, 1411228753Smm "Illegal zisofs block pointers"); 1412228753Smm return (ARCHIVE_FATAL); 1413228753Smm } 1414228753Smm zisofs->block_avail = bed - bst; 1415228753Smm zisofs->block_off += 4; 1416228753Smm 1417228753Smm /* Initialize compression library for new block. */ 1418228753Smm if (zisofs->stream_valid) 1419228753Smm r = inflateReset(&zisofs->stream); 1420228753Smm else 1421228753Smm r = inflateInit(&zisofs->stream); 1422228753Smm if (r != Z_OK) { 1423228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1424228753Smm "Can't initialize zisofs decompression."); 1425228753Smm return (ARCHIVE_FATAL); 1426228753Smm } 1427228753Smm zisofs->stream_valid = 1; 1428228753Smm zisofs->stream.total_in = 0; 1429228753Smm zisofs->stream.total_out = 0; 1430228753Smm } 1431228753Smm 1432228753Smm /* 1433228753Smm * Make uncompressed datas. 1434228753Smm */ 1435228753Smm if (zisofs->block_avail == 0) { 1436228753Smm memset(zisofs->uncompressed_buffer, 0, 1437228753Smm zisofs->uncompressed_buffer_size); 1438228753Smm uncompressed_size = zisofs->uncompressed_buffer_size; 1439228753Smm } else { 1440228753Smm zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p; 1441228753Smm if (avail > zisofs->block_avail) 1442228753Smm zisofs->stream.avail_in = zisofs->block_avail; 1443228753Smm else 1444228753Smm zisofs->stream.avail_in = avail; 1445228753Smm zisofs->stream.next_out = zisofs->uncompressed_buffer; 1446228753Smm zisofs->stream.avail_out = zisofs->uncompressed_buffer_size; 1447228753Smm 1448228753Smm r = inflate(&zisofs->stream, 0); 1449228753Smm switch (r) { 1450228753Smm case Z_OK: /* Decompressor made some progress.*/ 1451228753Smm case Z_STREAM_END: /* Found end of stream. */ 1452228753Smm break; 1453228753Smm default: 1454228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1455228753Smm "zisofs decompression failed (%d)", r); 1456228753Smm return (ARCHIVE_FATAL); 1457228753Smm } 1458228753Smm uncompressed_size = 1459228753Smm zisofs->uncompressed_buffer_size - zisofs->stream.avail_out; 1460228753Smm avail -= zisofs->stream.next_in - p; 1461228753Smm zisofs->block_avail -= zisofs->stream.next_in - p; 1462228753Smm } 1463228753Smmnext_data: 1464228753Smm bytes_read -= avail; 1465228753Smm *buff = zisofs->uncompressed_buffer; 1466228753Smm *size = uncompressed_size; 1467228753Smm *offset = iso9660->entry_sparse_offset; 1468228753Smm iso9660->entry_sparse_offset += uncompressed_size; 1469228753Smm iso9660->entry_bytes_remaining -= bytes_read; 1470228753Smm iso9660->current_position += bytes_read; 1471228753Smm zisofs->pz_offset += bytes_read; 1472228753Smm __archive_read_consume(a, bytes_read); 1473228753Smm 1474228753Smm return (ARCHIVE_OK); 1475228753Smm} 1476228753Smm 1477228753Smm#else /* HAVE_ZLIB_H */ 1478228753Smm 1479228753Smmstatic int 1480228753Smmzisofs_read_data(struct archive_read *a, 1481228753Smm const void **buff, size_t *size, off_t *offset) 1482228753Smm{ 1483228753Smm 1484228753Smm (void)buff;/* UNUSED */ 1485228753Smm (void)size;/* UNUSED */ 1486228753Smm (void)offset;/* UNUSED */ 1487228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, 1488228753Smm "zisofs is not supported on this platform."); 1489228753Smm return (ARCHIVE_FAILED); 1490228753Smm} 1491228753Smm 1492228753Smm#endif /* HAVE_ZLIB_H */ 1493228753Smm 1494228753Smmstatic int 1495228753Smmarchive_read_format_iso9660_read_data(struct archive_read *a, 1496228753Smm const void **buff, size_t *size, off_t *offset) 1497228753Smm{ 1498228753Smm ssize_t bytes_read; 1499228753Smm struct iso9660 *iso9660; 1500228753Smm 1501228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1502228753Smm if (iso9660->entry_bytes_remaining <= 0) { 1503228753Smm if (iso9660->entry_content != NULL) 1504228753Smm iso9660->entry_content = iso9660->entry_content->next; 1505228753Smm if (iso9660->entry_content == NULL) { 1506228753Smm *buff = NULL; 1507228753Smm *size = 0; 1508228753Smm *offset = iso9660->entry_sparse_offset; 1509228753Smm return (ARCHIVE_EOF); 1510228753Smm } 1511228753Smm /* Seek forward to the start of the entry. */ 1512228753Smm if (iso9660->current_position < iso9660->entry_content->offset) { 1513228753Smm int64_t step; 1514228753Smm 1515228753Smm step = iso9660->entry_content->offset - 1516228753Smm iso9660->current_position; 1517228753Smm step = __archive_read_skip(a, step); 1518228753Smm if (step < 0) 1519228753Smm return ((int)step); 1520228753Smm iso9660->current_position = 1521228753Smm iso9660->entry_content->offset; 1522228753Smm } 1523228753Smm if (iso9660->entry_content->offset < iso9660->current_position) { 1524228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1525228753Smm "Ignoring out-of-order file (%s) %jd < %jd", 1526228753Smm iso9660->pathname.s, 1527228753Smm (intmax_t)iso9660->entry_content->offset, 1528228753Smm (intmax_t)iso9660->current_position); 1529228753Smm *buff = NULL; 1530228753Smm *size = 0; 1531228753Smm *offset = iso9660->entry_sparse_offset; 1532228753Smm return (ARCHIVE_WARN); 1533228753Smm } 1534228753Smm iso9660->entry_bytes_remaining = iso9660->entry_content->size; 1535228753Smm } 1536228753Smm if (iso9660->entry_zisofs.pz) 1537228753Smm return (zisofs_read_data(a, buff, size, offset)); 1538228753Smm 1539228753Smm *buff = __archive_read_ahead(a, 1, &bytes_read); 1540228753Smm if (bytes_read == 0) 1541228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1542228753Smm "Truncated input file"); 1543228753Smm if (*buff == NULL) 1544228753Smm return (ARCHIVE_FATAL); 1545228753Smm if (bytes_read > iso9660->entry_bytes_remaining) 1546228753Smm bytes_read = iso9660->entry_bytes_remaining; 1547228753Smm *size = bytes_read; 1548228753Smm *offset = iso9660->entry_sparse_offset; 1549228753Smm iso9660->entry_sparse_offset += bytes_read; 1550228753Smm iso9660->entry_bytes_remaining -= bytes_read; 1551228753Smm iso9660->current_position += bytes_read; 1552228753Smm __archive_read_consume(a, bytes_read); 1553228753Smm return (ARCHIVE_OK); 1554228753Smm} 1555228753Smm 1556228753Smmstatic int 1557228753Smmarchive_read_format_iso9660_cleanup(struct archive_read *a) 1558228753Smm{ 1559228753Smm struct iso9660 *iso9660; 1560228753Smm int r = ARCHIVE_OK; 1561228753Smm 1562228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1563228753Smm release_files(iso9660); 1564228753Smm free(iso9660->read_ce_req.reqs); 1565228753Smm archive_string_free(&iso9660->pathname); 1566228753Smm archive_string_free(&iso9660->previous_pathname); 1567228753Smm if (iso9660->pending_files.files) 1568228753Smm free(iso9660->pending_files.files); 1569228753Smm#ifdef HAVE_ZLIB_H 1570228753Smm free(iso9660->entry_zisofs.uncompressed_buffer); 1571228753Smm free(iso9660->entry_zisofs.block_pointers); 1572228753Smm if (iso9660->entry_zisofs.stream_valid) { 1573228753Smm if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) { 1574228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1575228753Smm "Failed to clean up zlib decompressor"); 1576228753Smm r = ARCHIVE_FATAL; 1577228753Smm } 1578228753Smm } 1579228753Smm#endif 1580228753Smm free(iso9660); 1581228753Smm (a->format->data) = NULL; 1582228753Smm return (r); 1583228753Smm} 1584228753Smm 1585228753Smm/* 1586228753Smm * This routine parses a single ISO directory record, makes sense 1587228753Smm * of any extensions, and stores the result in memory. 1588228753Smm */ 1589228753Smmstatic struct file_info * 1590228753Smmparse_file_info(struct archive_read *a, struct file_info *parent, 1591228753Smm const unsigned char *isodirrec) 1592228753Smm{ 1593228753Smm struct iso9660 *iso9660; 1594228753Smm struct file_info *file; 1595228753Smm size_t name_len; 1596228753Smm const unsigned char *rr_start, *rr_end; 1597228753Smm const unsigned char *p; 1598228753Smm size_t dr_len; 1599228753Smm uint64_t fsize; 1600228753Smm int32_t location; 1601228753Smm int flags; 1602228753Smm 1603228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1604228753Smm 1605228753Smm dr_len = (size_t)isodirrec[DR_length_offset]; 1606228753Smm name_len = (size_t)isodirrec[DR_name_len_offset]; 1607228753Smm location = archive_le32dec(isodirrec + DR_extent_offset); 1608228753Smm fsize = toi(isodirrec + DR_size_offset, DR_size_size); 1609228753Smm /* Sanity check that dr_len needs at least 34. */ 1610228753Smm if (dr_len < 34) { 1611228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1612228753Smm "Invalid length of directory record"); 1613228753Smm return (NULL); 1614228753Smm } 1615228753Smm /* Sanity check that name_len doesn't exceed dr_len. */ 1616228753Smm if (dr_len - 33 < name_len || name_len == 0) { 1617228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1618228753Smm "Invalid length of file identifier"); 1619228753Smm return (NULL); 1620228753Smm } 1621228753Smm /* Sanity check that location doesn't exceed volume block. 1622228753Smm * Don't check lower limit of location; it's possibility 1623228753Smm * the location has negative value when file type is symbolic 1624228753Smm * link or file size is zero. As far as I know latest mkisofs 1625228753Smm * do that. 1626228753Smm */ 1627228753Smm if (location > 0 && 1628228753Smm (location + ((fsize + iso9660->logical_block_size -1) 1629229592Smm / iso9660->logical_block_size)) 1630229592Smm > (uint32_t)iso9660->volume_block) { 1631228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 1632228753Smm "Invalid location of extent of file"); 1633228753Smm return (NULL); 1634228753Smm } 1635228753Smm 1636228753Smm /* Create a new file entry and copy data from the ISO dir record. */ 1637228753Smm file = (struct file_info *)malloc(sizeof(*file)); 1638228753Smm if (file == NULL) { 1639228753Smm archive_set_error(&a->archive, ENOMEM, 1640228753Smm "No memory for file entry"); 1641228753Smm return (NULL); 1642228753Smm } 1643228753Smm memset(file, 0, sizeof(*file)); 1644228753Smm file->parent = parent; 1645228753Smm file->offset = iso9660->logical_block_size * (uint64_t)location; 1646228753Smm file->size = fsize; 1647228753Smm file->mtime = isodate7(isodirrec + DR_date_offset); 1648228753Smm file->ctime = file->atime = file->mtime; 1649228753Smm file->rede_files.first = NULL; 1650228753Smm file->rede_files.last = &(file->rede_files.first); 1651228753Smm 1652228753Smm p = isodirrec + DR_name_offset; 1653228753Smm /* Rockridge extensions (if any) follow name. Compute this 1654228753Smm * before fidgeting the name_len below. */ 1655228753Smm rr_start = p + name_len + (name_len & 1 ? 0 : 1); 1656228753Smm rr_end = isodirrec + dr_len; 1657228753Smm 1658228753Smm if (iso9660->seenJoliet) { 1659228753Smm /* Joliet names are max 64 chars (128 bytes) according to spec, 1660228753Smm * but genisoimage/mkisofs allows recording longer Joliet 1661228753Smm * names which are 103 UCS2 characters(206 bytes) by their 1662228753Smm * option '-joliet-long'. 1663228753Smm */ 1664228753Smm wchar_t wbuff[103+1], *wp; 1665228753Smm const unsigned char *c; 1666228753Smm 1667228753Smm if (name_len > 206) 1668228753Smm name_len = 206; 1669228753Smm /* convert BE UTF-16 to wchar_t */ 1670228753Smm for (c = p, wp = wbuff; 1671228753Smm c < (p + name_len) && 1672228753Smm wp < (wbuff + sizeof(wbuff)/sizeof(*wbuff) - 1); 1673228753Smm c += 2) { 1674228753Smm *wp++ = (((255 & (int)c[0]) << 8) | (255 & (int)c[1])); 1675228753Smm } 1676228753Smm *wp = L'\0'; 1677228753Smm 1678228753Smm#if 0 /* untested code, is it at all useful on Joliet? */ 1679228753Smm /* trim trailing first version and dot from filename. 1680228753Smm * 1681228753Smm * Remember we where in UTF-16BE land! 1682228753Smm * SEPARATOR 1 (.) and SEPARATOR 2 (;) are both 1683228753Smm * 16 bits big endian characters on Joliet. 1684228753Smm * 1685228753Smm * TODO: sanitize filename? 1686228753Smm * Joliet allows any UCS-2 char except: 1687228753Smm * *, /, :, ;, ? and \. 1688228753Smm */ 1689228753Smm /* Chop off trailing ';1' from files. */ 1690228753Smm if (*(wp-2) == ';' && *(wp-1) == '1') { 1691228753Smm wp-=2; 1692228753Smm *wp = L'\0'; 1693228753Smm } 1694228753Smm 1695228753Smm /* Chop off trailing '.' from filenames. */ 1696228753Smm if (*(wp-1) == '.') 1697228753Smm *(--wp) = L'\0'; 1698228753Smm#endif 1699228753Smm 1700228753Smm /* store the result in the file name field. */ 1701228753Smm archive_strappend_w_utf8(&file->name, wbuff); 1702228753Smm } else { 1703228753Smm /* Chop off trailing ';1' from files. */ 1704228753Smm if (name_len > 2 && p[name_len - 2] == ';' && 1705228753Smm p[name_len - 1] == '1') 1706228753Smm name_len -= 2; 1707228753Smm /* Chop off trailing '.' from filenames. */ 1708228753Smm if (name_len > 1 && p[name_len - 1] == '.') 1709228753Smm --name_len; 1710228753Smm 1711228753Smm archive_strncpy(&file->name, (const char *)p, name_len); 1712228753Smm } 1713228753Smm 1714228753Smm flags = isodirrec[DR_flags_offset]; 1715228753Smm if (flags & 0x02) 1716228753Smm file->mode = AE_IFDIR | 0700; 1717228753Smm else 1718228753Smm file->mode = AE_IFREG | 0400; 1719228753Smm if (flags & 0x80) 1720228753Smm file->multi_extent = 1; 1721228753Smm else 1722228753Smm file->multi_extent = 0; 1723228753Smm /* 1724228753Smm * Use location for file number. 1725228753Smm * File number is treated as inode number to find out harlink 1726228753Smm * target. If Rockridge extensions is being used, file number 1727228753Smm * will be overwritten by FILE SERIAL NUMBER of RRIP "PX" 1728228753Smm * extension. 1729228753Smm * NOTE: Old mkisofs did not record that FILE SERIAL NUMBER 1730228753Smm * in ISO images. 1731228753Smm */ 1732228753Smm if (file->size == 0 && location >= 0) 1733228753Smm /* If file->size is zero, its location points wrong place. 1734228753Smm * Dot not use it for file number. 1735228753Smm * When location has negative value, it can be used 1736228753Smm * for file number. 1737228753Smm */ 1738228753Smm file->number = -1; 1739228753Smm else 1740228753Smm file->number = (int64_t)(uint32_t)location; 1741228753Smm 1742228753Smm /* Rockridge extensions overwrite information from above. */ 1743228753Smm if (iso9660->opt_support_rockridge) { 1744228753Smm if (parent == NULL && rr_end - rr_start >= 7) { 1745228753Smm p = rr_start; 1746228753Smm if (p[0] == 'S' && p[1] == 'P' 1747228753Smm && p[2] == 7 && p[3] == 1 1748228753Smm && p[4] == 0xBE && p[5] == 0xEF) { 1749228753Smm /* 1750228753Smm * SP extension stores the suspOffset 1751228753Smm * (Number of bytes to skip between 1752228753Smm * filename and SUSP records.) 1753228753Smm * It is mandatory by the SUSP standard 1754228753Smm * (IEEE 1281). 1755228753Smm * 1756228753Smm * It allows SUSP to coexist with 1757228753Smm * non-SUSP uses of the System 1758228753Smm * Use Area by placing non-SUSP data 1759228753Smm * before SUSP data. 1760228753Smm * 1761228753Smm * SP extension must be in the root 1762228753Smm * directory entry, disable all SUSP 1763228753Smm * processing if not found. 1764228753Smm */ 1765228753Smm iso9660->suspOffset = p[6]; 1766228753Smm iso9660->seenSUSP = 1; 1767228753Smm rr_start += 7; 1768228753Smm } 1769228753Smm } 1770228753Smm if (iso9660->seenSUSP) { 1771228753Smm int r; 1772228753Smm 1773228753Smm file->name_continues = 0; 1774228753Smm file->symlink_continues = 0; 1775228753Smm rr_start += iso9660->suspOffset; 1776228753Smm r = parse_rockridge(a, file, rr_start, rr_end); 1777228753Smm if (r != ARCHIVE_OK) { 1778228753Smm free(file); 1779228753Smm return (NULL); 1780228753Smm } 1781228753Smm } else 1782228753Smm /* If there isn't SUSP, disable parsing 1783228753Smm * rock ridge extensions. */ 1784228753Smm iso9660->opt_support_rockridge = 0; 1785228753Smm } 1786228753Smm 1787228753Smm file->nlinks = 1;/* Reset nlink. we'll calculate it later. */ 1788228753Smm /* Tell file's parent how many children that parent has. */ 1789228753Smm if (parent != NULL && (flags & 0x02)) 1790228753Smm parent->subdirs++; 1791228753Smm 1792228753Smm if (iso9660->seenRockridge) { 1793228753Smm if (parent != NULL && parent->parent == NULL && 1794228753Smm (flags & 0x02) && iso9660->rr_moved == NULL && 1795228753Smm (strcmp(file->name.s, "rr_moved") == 0 || 1796228753Smm strcmp(file->name.s, ".rr_moved") == 0)) { 1797228753Smm iso9660->rr_moved = file; 1798228753Smm file->rr_moved = 1; 1799228753Smm file->rr_moved_has_re_only = 1; 1800228753Smm file->re = 0; 1801228753Smm parent->subdirs--; 1802228753Smm } else if (file->re) { 1803229592Smm /* 1804229592Smm * Sanity check: file's parent is rr_moved. 1805229592Smm */ 1806229592Smm if (parent == NULL || parent->rr_moved == 0) { 1807229592Smm archive_set_error(&a->archive, 1808229592Smm ARCHIVE_ERRNO_MISC, 1809229592Smm "Invalid Rockridge RE"); 1810229592Smm return (NULL); 1811228753Smm } 1812229592Smm /* 1813229592Smm * Sanity check: file does not have "CL" extension. 1814229592Smm */ 1815229592Smm if (file->cl_offset) { 1816229592Smm archive_set_error(&a->archive, 1817229592Smm ARCHIVE_ERRNO_MISC, 1818229592Smm "Invalid Rockridge RE and CL"); 1819229592Smm return (NULL); 1820229592Smm } 1821229592Smm /* 1822229592Smm * Sanity check: The file type must be a directory. 1823229592Smm */ 1824229592Smm if ((flags & 0x02) == 0) { 1825229592Smm archive_set_error(&a->archive, 1826229592Smm ARCHIVE_ERRNO_MISC, 1827229592Smm "Invalid Rockridge RE"); 1828229592Smm return (NULL); 1829229592Smm } 1830228753Smm } else if (parent != NULL && parent->rr_moved) 1831228753Smm file->rr_moved_has_re_only = 0; 1832228753Smm else if (parent != NULL && (flags & 0x02) && 1833228753Smm (parent->re || parent->re_descendant)) 1834228753Smm file->re_descendant = 1; 1835229592Smm if (file->cl_offset) { 1836229592Smm struct file_info *r; 1837229592Smm 1838229592Smm if (parent == NULL || parent->parent == NULL) { 1839229592Smm archive_set_error(&a->archive, 1840229592Smm ARCHIVE_ERRNO_MISC, 1841229592Smm "Invalid Rockridge CL"); 1842229592Smm return (NULL); 1843229592Smm } 1844229592Smm /* 1845229592Smm * Sanity check: The file type must be a regular file. 1846229592Smm */ 1847229592Smm if ((flags & 0x02) != 0) { 1848229592Smm archive_set_error(&a->archive, 1849229592Smm ARCHIVE_ERRNO_MISC, 1850229592Smm "Invalid Rockridge CL"); 1851229592Smm return (NULL); 1852229592Smm } 1853228753Smm parent->subdirs++; 1854228753Smm /* Overwrite an offset and a number of this "CL" entry 1855228753Smm * to appear before other dirs. "+1" to those is to 1856228753Smm * make sure to appear after "RE" entry which this 1857228753Smm * "CL" entry should be connected with. */ 1858228753Smm file->offset = file->number = file->cl_offset + 1; 1859229592Smm 1860229592Smm /* 1861229592Smm * Sanity check: cl_offset does not point at its 1862229592Smm * the parents or itself. 1863229592Smm */ 1864229592Smm for (r = parent; r; r = r->parent) { 1865229592Smm if (r->offset == file->cl_offset) { 1866229592Smm archive_set_error(&a->archive, 1867229592Smm ARCHIVE_ERRNO_MISC, 1868229592Smm "Invalid Rockridge CL"); 1869229592Smm return (NULL); 1870229592Smm } 1871229592Smm } 1872229592Smm if (file->cl_offset == file->offset || 1873229592Smm parent->rr_moved) { 1874229592Smm archive_set_error(&a->archive, 1875229592Smm ARCHIVE_ERRNO_MISC, 1876229592Smm "Invalid Rockridge CL"); 1877229592Smm return (NULL); 1878229592Smm } 1879228753Smm } 1880228753Smm } 1881228753Smm 1882228753Smm#if DEBUG 1883228753Smm /* DEBUGGING: Warn about attributes I don't yet fully support. */ 1884228753Smm if ((flags & ~0x02) != 0) { 1885228753Smm fprintf(stderr, "\n ** Unrecognized flag: "); 1886228753Smm dump_isodirrec(stderr, isodirrec); 1887228753Smm fprintf(stderr, "\n"); 1888228753Smm } else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) { 1889228753Smm fprintf(stderr, "\n ** Unrecognized sequence number: "); 1890228753Smm dump_isodirrec(stderr, isodirrec); 1891228753Smm fprintf(stderr, "\n"); 1892228753Smm } else if (*(isodirrec + DR_file_unit_size_offset) != 0) { 1893228753Smm fprintf(stderr, "\n ** Unexpected file unit size: "); 1894228753Smm dump_isodirrec(stderr, isodirrec); 1895228753Smm fprintf(stderr, "\n"); 1896228753Smm } else if (*(isodirrec + DR_interleave_offset) != 0) { 1897228753Smm fprintf(stderr, "\n ** Unexpected interleave: "); 1898228753Smm dump_isodirrec(stderr, isodirrec); 1899228753Smm fprintf(stderr, "\n"); 1900228753Smm } else if (*(isodirrec + DR_ext_attr_length_offset) != 0) { 1901228753Smm fprintf(stderr, "\n ** Unexpected extended attribute length: "); 1902228753Smm dump_isodirrec(stderr, isodirrec); 1903228753Smm fprintf(stderr, "\n"); 1904228753Smm } 1905228753Smm#endif 1906228753Smm register_file(iso9660, file); 1907228753Smm return (file); 1908228753Smm} 1909228753Smm 1910228753Smmstatic int 1911228753Smmparse_rockridge(struct archive_read *a, struct file_info *file, 1912228753Smm const unsigned char *p, const unsigned char *end) 1913228753Smm{ 1914228753Smm struct iso9660 *iso9660; 1915228753Smm 1916228753Smm iso9660 = (struct iso9660 *)(a->format->data); 1917228753Smm 1918228753Smm while (p + 4 <= end /* Enough space for another entry. */ 1919228753Smm && p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */ 1920228753Smm && p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */ 1921228753Smm && p[2] >= 4 /* Sanity-check length. */ 1922228753Smm && p + p[2] <= end) { /* Sanity-check length. */ 1923228753Smm const unsigned char *data = p + 4; 1924228753Smm int data_length = p[2] - 4; 1925228753Smm int version = p[3]; 1926228753Smm 1927228753Smm /* 1928228753Smm * Yes, each 'if' here does test p[0] again. 1929228753Smm * Otherwise, the fall-through handling to catch 1930228753Smm * unsupported extensions doesn't work. 1931228753Smm */ 1932228753Smm switch(p[0]) { 1933228753Smm case 'C': 1934228753Smm if (p[0] == 'C' && p[1] == 'E') { 1935228753Smm if (version == 1 && data_length == 24) { 1936228753Smm /* 1937228753Smm * CE extension comprises: 1938228753Smm * 8 byte sector containing extension 1939228753Smm * 8 byte offset w/in above sector 1940228753Smm * 8 byte length of continuation 1941228753Smm */ 1942228753Smm int32_t location = 1943228753Smm archive_le32dec(data); 1944228753Smm file->ce_offset = 1945228753Smm archive_le32dec(data+8); 1946228753Smm file->ce_size = 1947228753Smm archive_le32dec(data+16); 1948228753Smm if (register_CE(a, location, file) 1949228753Smm != ARCHIVE_OK) 1950228753Smm return (ARCHIVE_FATAL); 1951228753Smm } 1952228753Smm break; 1953228753Smm } 1954228753Smm if (p[0] == 'C' && p[1] == 'L') { 1955228753Smm if (version == 1 && data_length == 8) { 1956228753Smm file->cl_offset = (uint64_t) 1957228753Smm iso9660->logical_block_size * 1958228753Smm (uint64_t)archive_le32dec(data); 1959228753Smm iso9660->seenRockridge = 1; 1960228753Smm } 1961228753Smm break; 1962228753Smm } 1963228753Smm /* FALLTHROUGH */ 1964228753Smm case 'N': 1965228753Smm if (p[0] == 'N' && p[1] == 'M') { 1966228753Smm if (version == 1) { 1967228753Smm parse_rockridge_NM1(file, 1968228753Smm data, data_length); 1969228753Smm iso9660->seenRockridge = 1; 1970228753Smm } 1971228753Smm break; 1972228753Smm } 1973228753Smm /* FALLTHROUGH */ 1974228753Smm case 'P': 1975228753Smm if (p[0] == 'P' && p[1] == 'D') { 1976228753Smm /* 1977228753Smm * PD extension is padding; 1978228753Smm * contents are always ignored. 1979228753Smm */ 1980228753Smm break; 1981228753Smm } 1982229592Smm if (p[0] == 'P' && p[1] == 'L') { 1983229592Smm /* 1984229592Smm * PL extension won't appear; 1985229592Smm * contents are always ignored. 1986229592Smm */ 1987229592Smm break; 1988229592Smm } 1989228753Smm if (p[0] == 'P' && p[1] == 'N') { 1990228753Smm if (version == 1 && data_length == 16) { 1991228753Smm file->rdev = toi(data,4); 1992228753Smm file->rdev <<= 32; 1993228753Smm file->rdev |= toi(data + 8, 4); 1994228753Smm iso9660->seenRockridge = 1; 1995228753Smm } 1996228753Smm break; 1997228753Smm } 1998228753Smm if (p[0] == 'P' && p[1] == 'X') { 1999228753Smm /* 2000228753Smm * PX extension comprises: 2001228753Smm * 8 bytes for mode, 2002228753Smm * 8 bytes for nlinks, 2003228753Smm * 8 bytes for uid, 2004228753Smm * 8 bytes for gid, 2005228753Smm * 8 bytes for inode. 2006228753Smm */ 2007228753Smm if (version == 1) { 2008228753Smm if (data_length >= 8) 2009228753Smm file->mode 2010228753Smm = toi(data, 4); 2011228753Smm if (data_length >= 16) 2012228753Smm file->nlinks 2013228753Smm = toi(data + 8, 4); 2014228753Smm if (data_length >= 24) 2015228753Smm file->uid 2016228753Smm = toi(data + 16, 4); 2017228753Smm if (data_length >= 32) 2018228753Smm file->gid 2019228753Smm = toi(data + 24, 4); 2020228753Smm if (data_length >= 40) 2021228753Smm file->number 2022228753Smm = toi(data + 32, 4); 2023228753Smm iso9660->seenRockridge = 1; 2024228753Smm } 2025228753Smm break; 2026228753Smm } 2027228753Smm /* FALLTHROUGH */ 2028228753Smm case 'R': 2029228753Smm if (p[0] == 'R' && p[1] == 'E' && version == 1) { 2030228753Smm file->re = 1; 2031228753Smm iso9660->seenRockridge = 1; 2032228753Smm break; 2033228753Smm } 2034228753Smm if (p[0] == 'R' && p[1] == 'R' && version == 1) { 2035228753Smm /* 2036228753Smm * RR extension comprises: 2037228753Smm * one byte flag value 2038228753Smm * This extension is obsolete, 2039228753Smm * so contents are always ignored. 2040228753Smm */ 2041228753Smm break; 2042228753Smm } 2043228753Smm /* FALLTHROUGH */ 2044228753Smm case 'S': 2045228753Smm if (p[0] == 'S' && p[1] == 'L') { 2046228753Smm if (version == 1) { 2047228753Smm parse_rockridge_SL1(file, 2048228753Smm data, data_length); 2049228753Smm iso9660->seenRockridge = 1; 2050228753Smm } 2051228753Smm break; 2052228753Smm } 2053228753Smm if (p[0] == 'S' && p[1] == 'T' 2054228753Smm && data_length == 0 && version == 1) { 2055228753Smm /* 2056228753Smm * ST extension marks end of this 2057228753Smm * block of SUSP entries. 2058228753Smm * 2059228753Smm * It allows SUSP to coexist with 2060228753Smm * non-SUSP uses of the System 2061228753Smm * Use Area by placing non-SUSP data 2062228753Smm * after SUSP data. 2063228753Smm */ 2064228753Smm iso9660->seenSUSP = 0; 2065228753Smm iso9660->seenRockridge = 0; 2066228753Smm return (ARCHIVE_OK); 2067228753Smm } 2068228753Smm case 'T': 2069228753Smm if (p[0] == 'T' && p[1] == 'F') { 2070228753Smm if (version == 1) { 2071228753Smm parse_rockridge_TF1(file, 2072228753Smm data, data_length); 2073228753Smm iso9660->seenRockridge = 1; 2074228753Smm } 2075228753Smm break; 2076228753Smm } 2077228753Smm /* FALLTHROUGH */ 2078228753Smm case 'Z': 2079228753Smm if (p[0] == 'Z' && p[1] == 'F') { 2080228753Smm if (version == 1) 2081228753Smm parse_rockridge_ZF1(file, 2082228753Smm data, data_length); 2083228753Smm break; 2084228753Smm } 2085228753Smm /* FALLTHROUGH */ 2086228753Smm default: 2087228753Smm /* The FALLTHROUGHs above leave us here for 2088228753Smm * any unsupported extension. */ 2089228753Smm break; 2090228753Smm } 2091228753Smm 2092228753Smm 2093228753Smm 2094228753Smm p += p[2]; 2095228753Smm } 2096228753Smm return (ARCHIVE_OK); 2097228753Smm} 2098228753Smm 2099228753Smmstatic int 2100228753Smmregister_CE(struct archive_read *a, int32_t location, 2101228753Smm struct file_info *file) 2102228753Smm{ 2103228753Smm struct iso9660 *iso9660; 2104228753Smm struct read_ce_queue *heap; 2105228753Smm struct read_ce_req *p; 2106228753Smm uint64_t offset, parent_offset; 2107228753Smm int hole, parent; 2108228753Smm 2109228753Smm iso9660 = (struct iso9660 *)(a->format->data); 2110228753Smm offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size; 2111228753Smm if (((file->mode & AE_IFMT) == AE_IFREG && 2112228753Smm offset >= file->offset) || 2113228753Smm offset < iso9660->current_position) { 2114228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 2115228753Smm "Invalid location in SUSP \"CE\" extension"); 2116228753Smm return (ARCHIVE_FATAL); 2117228753Smm } 2118228753Smm 2119228753Smm /* Expand our CE list as necessary. */ 2120228753Smm heap = &(iso9660->read_ce_req); 2121228753Smm if (heap->cnt >= heap->allocated) { 2122228753Smm int new_size; 2123228753Smm 2124228753Smm if (heap->allocated < 16) 2125228753Smm new_size = 16; 2126228753Smm else 2127228753Smm new_size = heap->allocated * 2; 2128228753Smm /* Overflow might keep us from growing the list. */ 2129228753Smm if (new_size <= heap->allocated) 2130228753Smm __archive_errx(1, "Out of memory"); 2131228753Smm p = malloc(new_size * sizeof(p[0])); 2132228753Smm if (p == NULL) 2133228753Smm __archive_errx(1, "Out of memory"); 2134228753Smm if (heap->reqs != NULL) { 2135228753Smm memcpy(p, heap->reqs, heap->cnt * sizeof(*p)); 2136228753Smm free(heap->reqs); 2137228753Smm } 2138228753Smm heap->reqs = p; 2139228753Smm heap->allocated = new_size; 2140228753Smm } 2141228753Smm 2142228753Smm /* 2143228753Smm * Start with hole at end, walk it up tree to find insertion point. 2144228753Smm */ 2145228753Smm hole = heap->cnt++; 2146228753Smm while (hole > 0) { 2147228753Smm parent = (hole - 1)/2; 2148228753Smm parent_offset = heap->reqs[parent].offset; 2149228753Smm if (offset >= parent_offset) { 2150228753Smm heap->reqs[hole].offset = offset; 2151228753Smm heap->reqs[hole].file = file; 2152228753Smm return (ARCHIVE_OK); 2153228753Smm } 2154228753Smm // Move parent into hole <==> move hole up tree. 2155228753Smm heap->reqs[hole] = heap->reqs[parent]; 2156228753Smm hole = parent; 2157228753Smm } 2158228753Smm heap->reqs[0].offset = offset; 2159228753Smm heap->reqs[0].file = file; 2160228753Smm return (ARCHIVE_OK); 2161228753Smm} 2162228753Smm 2163228753Smmstatic void 2164228753Smmnext_CE(struct read_ce_queue *heap) 2165228753Smm{ 2166228753Smm uint64_t a_offset, b_offset, c_offset; 2167228753Smm int a, b, c; 2168228753Smm struct read_ce_req tmp; 2169228753Smm 2170228753Smm if (heap->cnt < 1) 2171228753Smm return; 2172228753Smm 2173228753Smm /* 2174228753Smm * Move the last item in the heap to the root of the tree 2175228753Smm */ 2176228753Smm heap->reqs[0] = heap->reqs[--(heap->cnt)]; 2177228753Smm 2178228753Smm /* 2179228753Smm * Rebalance the heap. 2180228753Smm */ 2181228753Smm a = 0; // Starting element and its offset 2182228753Smm a_offset = heap->reqs[a].offset; 2183228753Smm for (;;) { 2184228753Smm b = a + a + 1; // First child 2185228753Smm if (b >= heap->cnt) 2186228753Smm return; 2187228753Smm b_offset = heap->reqs[b].offset; 2188228753Smm c = b + 1; // Use second child if it is smaller. 2189228753Smm if (c < heap->cnt) { 2190228753Smm c_offset = heap->reqs[c].offset; 2191228753Smm if (c_offset < b_offset) { 2192228753Smm b = c; 2193228753Smm b_offset = c_offset; 2194228753Smm } 2195228753Smm } 2196228753Smm if (a_offset <= b_offset) 2197228753Smm return; 2198228753Smm tmp = heap->reqs[a]; 2199228753Smm heap->reqs[a] = heap->reqs[b]; 2200228753Smm heap->reqs[b] = tmp; 2201228753Smm a = b; 2202228753Smm } 2203228753Smm} 2204228753Smm 2205228753Smm 2206228753Smmstatic int 2207228753Smmread_CE(struct archive_read *a, struct iso9660 *iso9660) 2208228753Smm{ 2209228753Smm struct read_ce_queue *heap; 2210228753Smm const unsigned char *b, *p, *end; 2211228753Smm struct file_info *file; 2212228753Smm size_t step; 2213228753Smm int r; 2214228753Smm 2215228753Smm /* Read data which RRIP "CE" extension points. */ 2216228753Smm heap = &(iso9660->read_ce_req); 2217228753Smm step = iso9660->logical_block_size; 2218228753Smm while (heap->cnt && 2219228753Smm heap->reqs[0].offset == iso9660->current_position) { 2220228753Smm b = __archive_read_ahead(a, step, NULL); 2221228753Smm if (b == NULL) { 2222228753Smm archive_set_error(&a->archive, 2223228753Smm ARCHIVE_ERRNO_MISC, 2224228753Smm "Failed to read full block when scanning " 2225228753Smm "ISO9660 directory list"); 2226228753Smm return (ARCHIVE_FATAL); 2227228753Smm } 2228228753Smm do { 2229228753Smm file = heap->reqs[0].file; 2230228753Smm p = b + file->ce_offset; 2231228753Smm end = p + file->ce_size; 2232228753Smm next_CE(heap); 2233228753Smm r = parse_rockridge(a, file, p, end); 2234228753Smm if (r != ARCHIVE_OK) 2235228753Smm return (ARCHIVE_FATAL); 2236228753Smm } while (heap->cnt && 2237228753Smm heap->reqs[0].offset == iso9660->current_position); 2238228753Smm /* NOTE: Do not move this consume's code to fron of 2239228753Smm * do-while loop. Registration of nested CE extension 2240228753Smm * might cause error because of current position. */ 2241228753Smm __archive_read_consume(a, step); 2242228753Smm iso9660->current_position += step; 2243228753Smm } 2244228753Smm return (ARCHIVE_OK); 2245228753Smm} 2246228753Smm 2247228753Smmstatic void 2248228753Smmparse_rockridge_NM1(struct file_info *file, 2249228753Smm const unsigned char *data, int data_length) 2250228753Smm{ 2251228753Smm if (!file->name_continues) 2252228753Smm archive_string_empty(&file->name); 2253228753Smm file->name_continues = 0; 2254228753Smm if (data_length < 1) 2255228753Smm return; 2256228753Smm /* 2257228753Smm * NM version 1 extension comprises: 2258228753Smm * 1 byte flag, value is one of: 2259228753Smm * = 0: remainder is name 2260228753Smm * = 1: remainder is name, next NM entry continues name 2261228753Smm * = 2: "." 2262228753Smm * = 4: ".." 2263228753Smm * = 32: Implementation specific 2264228753Smm * All other values are reserved. 2265228753Smm */ 2266228753Smm switch(data[0]) { 2267228753Smm case 0: 2268228753Smm if (data_length < 2) 2269228753Smm return; 2270228753Smm archive_strncat(&file->name, (const char *)data + 1, data_length - 1); 2271228753Smm break; 2272228753Smm case 1: 2273228753Smm if (data_length < 2) 2274228753Smm return; 2275228753Smm archive_strncat(&file->name, (const char *)data + 1, data_length - 1); 2276228753Smm file->name_continues = 1; 2277228753Smm break; 2278228753Smm case 2: 2279228753Smm archive_strcat(&file->name, "."); 2280228753Smm break; 2281228753Smm case 4: 2282228753Smm archive_strcat(&file->name, ".."); 2283228753Smm break; 2284228753Smm default: 2285228753Smm return; 2286228753Smm } 2287228753Smm 2288228753Smm} 2289228753Smm 2290228753Smmstatic void 2291228753Smmparse_rockridge_TF1(struct file_info *file, const unsigned char *data, 2292228753Smm int data_length) 2293228753Smm{ 2294228753Smm char flag; 2295228753Smm /* 2296228753Smm * TF extension comprises: 2297228753Smm * one byte flag 2298228753Smm * create time (optional) 2299228753Smm * modify time (optional) 2300228753Smm * access time (optional) 2301228753Smm * attribute time (optional) 2302228753Smm * Time format and presence of fields 2303228753Smm * is controlled by flag bits. 2304228753Smm */ 2305228753Smm if (data_length < 1) 2306228753Smm return; 2307228753Smm flag = data[0]; 2308228753Smm ++data; 2309228753Smm --data_length; 2310228753Smm if (flag & 0x80) { 2311228753Smm /* Use 17-byte time format. */ 2312228753Smm if ((flag & 1) && data_length >= 17) { 2313228753Smm /* Create time. */ 2314228753Smm file->birthtime_is_set = 1; 2315228753Smm file->birthtime = isodate17(data); 2316228753Smm data += 17; 2317228753Smm data_length -= 17; 2318228753Smm } 2319228753Smm if ((flag & 2) && data_length >= 17) { 2320228753Smm /* Modify time. */ 2321228753Smm file->mtime = isodate17(data); 2322228753Smm data += 17; 2323228753Smm data_length -= 17; 2324228753Smm } 2325228753Smm if ((flag & 4) && data_length >= 17) { 2326228753Smm /* Access time. */ 2327228753Smm file->atime = isodate17(data); 2328228753Smm data += 17; 2329228753Smm data_length -= 17; 2330228753Smm } 2331228753Smm if ((flag & 8) && data_length >= 17) { 2332228753Smm /* Attribute change time. */ 2333228753Smm file->ctime = isodate17(data); 2334228753Smm } 2335228753Smm } else { 2336228753Smm /* Use 7-byte time format. */ 2337228753Smm if ((flag & 1) && data_length >= 7) { 2338228753Smm /* Create time. */ 2339228753Smm file->birthtime_is_set = 1; 2340228753Smm file->birthtime = isodate7(data); 2341228753Smm data += 7; 2342228753Smm data_length -= 7; 2343228753Smm } 2344228753Smm if ((flag & 2) && data_length >= 7) { 2345228753Smm /* Modify time. */ 2346228753Smm file->mtime = isodate7(data); 2347228753Smm data += 7; 2348228753Smm data_length -= 7; 2349228753Smm } 2350228753Smm if ((flag & 4) && data_length >= 7) { 2351228753Smm /* Access time. */ 2352228753Smm file->atime = isodate7(data); 2353228753Smm data += 7; 2354228753Smm data_length -= 7; 2355228753Smm } 2356228753Smm if ((flag & 8) && data_length >= 7) { 2357228753Smm /* Attribute change time. */ 2358228753Smm file->ctime = isodate7(data); 2359228753Smm } 2360228753Smm } 2361228753Smm} 2362228753Smm 2363228753Smmstatic void 2364228753Smmparse_rockridge_SL1(struct file_info *file, const unsigned char *data, 2365228753Smm int data_length) 2366228753Smm{ 2367228753Smm const char *separator = ""; 2368228753Smm 2369228753Smm if (!file->symlink_continues || file->symlink.length < 1) 2370228753Smm archive_string_empty(&file->symlink); 2371228753Smm else if (!file->symlink_continues && 2372228753Smm file->symlink.s[file->symlink.length - 1] != '/') 2373228753Smm separator = "/"; 2374228753Smm file->symlink_continues = 0; 2375228753Smm 2376228753Smm /* 2377228753Smm * Defined flag values: 2378228753Smm * 0: This is the last SL record for this symbolic link 2379228753Smm * 1: this symbolic link field continues in next SL entry 2380228753Smm * All other values are reserved. 2381228753Smm */ 2382228753Smm if (data_length < 1) 2383228753Smm return; 2384228753Smm switch(*data) { 2385228753Smm case 0: 2386228753Smm break; 2387228753Smm case 1: 2388228753Smm file->symlink_continues = 1; 2389228753Smm break; 2390228753Smm default: 2391228753Smm return; 2392228753Smm } 2393228753Smm ++data; /* Skip flag byte. */ 2394228753Smm --data_length; 2395228753Smm 2396228753Smm /* 2397228753Smm * SL extension body stores "components". 2398228753Smm * Basically, this is a complicated way of storing 2399228753Smm * a POSIX path. It also interferes with using 2400228753Smm * symlinks for storing non-path data. <sigh> 2401228753Smm * 2402228753Smm * Each component is 2 bytes (flag and length) 2403228753Smm * possibly followed by name data. 2404228753Smm */ 2405228753Smm while (data_length >= 2) { 2406228753Smm unsigned char flag = *data++; 2407228753Smm unsigned char nlen = *data++; 2408228753Smm data_length -= 2; 2409228753Smm 2410228753Smm archive_strcat(&file->symlink, separator); 2411228753Smm separator = "/"; 2412228753Smm 2413228753Smm switch(flag) { 2414228753Smm case 0: /* Usual case, this is text. */ 2415228753Smm if (data_length < nlen) 2416228753Smm return; 2417228753Smm archive_strncat(&file->symlink, 2418228753Smm (const char *)data, nlen); 2419228753Smm break; 2420228753Smm case 0x01: /* Text continues in next component. */ 2421228753Smm if (data_length < nlen) 2422228753Smm return; 2423228753Smm archive_strncat(&file->symlink, 2424228753Smm (const char *)data, nlen); 2425228753Smm separator = ""; 2426228753Smm break; 2427228753Smm case 0x02: /* Current dir. */ 2428228753Smm archive_strcat(&file->symlink, "."); 2429228753Smm break; 2430228753Smm case 0x04: /* Parent dir. */ 2431228753Smm archive_strcat(&file->symlink, ".."); 2432228753Smm break; 2433228753Smm case 0x08: /* Root of filesystem. */ 2434228753Smm archive_strcat(&file->symlink, "/"); 2435228753Smm separator = ""; 2436228753Smm break; 2437228753Smm case 0x10: /* Undefined (historically "volume root" */ 2438228753Smm archive_string_empty(&file->symlink); 2439228753Smm archive_strcat(&file->symlink, "ROOT"); 2440228753Smm break; 2441228753Smm case 0x20: /* Undefined (historically "hostname") */ 2442228753Smm archive_strcat(&file->symlink, "hostname"); 2443228753Smm break; 2444228753Smm default: 2445228753Smm /* TODO: issue a warning ? */ 2446228753Smm return; 2447228753Smm } 2448228753Smm data += nlen; 2449228753Smm data_length -= nlen; 2450228753Smm } 2451228753Smm} 2452228753Smm 2453228753Smmstatic void 2454228753Smmparse_rockridge_ZF1(struct file_info *file, const unsigned char *data, 2455228753Smm int data_length) 2456228753Smm{ 2457228753Smm 2458228753Smm if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) { 2459228753Smm /* paged zlib */ 2460228753Smm file->pz = 1; 2461228753Smm file->pz_log2_bs = data[3]; 2462228753Smm file->pz_uncompressed_size = archive_le32dec(&data[4]); 2463228753Smm } 2464228753Smm} 2465228753Smm 2466228753Smmstatic void 2467228753Smmregister_file(struct iso9660 *iso9660, struct file_info *file) 2468228753Smm{ 2469228753Smm 2470228753Smm file->use_next = iso9660->use_files; 2471228753Smm iso9660->use_files = file; 2472228753Smm} 2473228753Smm 2474228753Smmstatic void 2475228753Smmrelease_files(struct iso9660 *iso9660) 2476228753Smm{ 2477228753Smm struct content *con, *connext; 2478228753Smm struct file_info *file; 2479228753Smm 2480228753Smm file = iso9660->use_files; 2481228753Smm while (file != NULL) { 2482228753Smm struct file_info *next = file->use_next; 2483228753Smm 2484228753Smm archive_string_free(&file->name); 2485228753Smm archive_string_free(&file->symlink); 2486228753Smm con = file->contents.first; 2487228753Smm while (con != NULL) { 2488228753Smm connext = con->next; 2489228753Smm free(con); 2490228753Smm con = connext; 2491228753Smm } 2492228753Smm free(file); 2493228753Smm file = next; 2494228753Smm } 2495228753Smm} 2496228753Smm 2497228753Smmstatic int 2498228753Smmnext_entry_seek(struct archive_read *a, struct iso9660 *iso9660, 2499228753Smm struct file_info **pfile) 2500228753Smm{ 2501228753Smm struct file_info *file; 2502228753Smm int r; 2503228753Smm 2504228753Smm r = next_cache_entry(a, iso9660, pfile); 2505228753Smm if (r != ARCHIVE_OK) 2506228753Smm return (r); 2507228753Smm file = *pfile; 2508228753Smm 2509228753Smm /* Don't waste time seeking for zero-length bodies. */ 2510228753Smm if (file->size == 0) 2511228753Smm file->offset = iso9660->current_position; 2512228753Smm 2513228753Smm /* Seek forward to the start of the entry. */ 2514228753Smm if (iso9660->current_position < file->offset) { 2515228753Smm int64_t step; 2516228753Smm 2517228753Smm step = file->offset - iso9660->current_position; 2518228753Smm step = __archive_read_skip(a, step); 2519228753Smm if (step < 0) 2520228753Smm return ((int)step); 2521228753Smm iso9660->current_position = file->offset; 2522228753Smm } 2523228753Smm 2524228753Smm /* We found body of file; handle it now. */ 2525228753Smm return (ARCHIVE_OK); 2526228753Smm} 2527228753Smm 2528228753Smmstatic int 2529228753Smmnext_cache_entry(struct archive_read *a, struct iso9660 *iso9660, 2530228753Smm struct file_info **pfile) 2531228753Smm{ 2532228753Smm struct file_info *file; 2533228753Smm struct { 2534228753Smm struct file_info *first; 2535228753Smm struct file_info **last; 2536228753Smm } empty_files; 2537228753Smm int64_t number; 2538228753Smm int count; 2539228753Smm 2540228753Smm file = cache_get_entry(iso9660); 2541228753Smm if (file != NULL) { 2542228753Smm *pfile = file; 2543228753Smm return (ARCHIVE_OK); 2544228753Smm } 2545228753Smm 2546228753Smm for (;;) { 2547228753Smm struct file_info *re, *d; 2548228753Smm 2549228753Smm *pfile = file = next_entry(iso9660); 2550228753Smm if (file == NULL) { 2551228753Smm /* 2552228753Smm * If directory entries all which are descendant of 2553228753Smm * rr_moved are stil remaning, expose their. 2554228753Smm */ 2555228753Smm if (iso9660->re_files.first != NULL && 2556228753Smm iso9660->rr_moved != NULL && 2557228753Smm iso9660->rr_moved->rr_moved_has_re_only) 2558228753Smm /* Expose "rr_moved" entry. */ 2559228753Smm cache_add_entry(iso9660, iso9660->rr_moved); 2560228753Smm while ((re = re_get_entry(iso9660)) != NULL) { 2561228753Smm /* Expose its descendant dirs. */ 2562228753Smm while ((d = rede_get_entry(re)) != NULL) 2563228753Smm cache_add_entry(iso9660, d); 2564228753Smm } 2565228753Smm if (iso9660->cache_files.first != NULL) 2566228753Smm return (next_cache_entry(a, iso9660, pfile)); 2567228753Smm return (ARCHIVE_EOF); 2568228753Smm } 2569228753Smm 2570228753Smm if (file->cl_offset) { 2571228753Smm struct file_info *first_re = NULL; 2572228753Smm int nexted_re = 0; 2573228753Smm 2574228753Smm /* 2575228753Smm * Find "RE" dir for the current file, which 2576228753Smm * has "CL" flag. 2577228753Smm */ 2578228753Smm while ((re = re_get_entry(iso9660)) 2579228753Smm != first_re) { 2580228753Smm if (first_re == NULL) 2581228753Smm first_re = re; 2582228753Smm if (re->offset == file->cl_offset) { 2583228753Smm re->parent->subdirs--; 2584228753Smm re->parent = file->parent; 2585228753Smm re->re = 0; 2586228753Smm if (re->parent->re_descendant) { 2587228753Smm nexted_re = 1; 2588228753Smm re->re_descendant = 1; 2589228753Smm if (rede_add_entry(re) < 0) 2590228753Smm goto fatal_rr; 2591228753Smm /* Move a list of descendants 2592228753Smm * to a new ancestor. */ 2593228753Smm while ((d = rede_get_entry( 2594228753Smm re)) != NULL) 2595228753Smm if (rede_add_entry(d) 2596228753Smm < 0) 2597228753Smm goto fatal_rr; 2598228753Smm break; 2599228753Smm } 2600228753Smm /* Replace the current file 2601228753Smm * with "RE" dir */ 2602228753Smm *pfile = file = re; 2603228753Smm /* Expose its descendant */ 2604228753Smm while ((d = rede_get_entry( 2605228753Smm file)) != NULL) 2606228753Smm cache_add_entry( 2607228753Smm iso9660, d); 2608228753Smm break; 2609228753Smm } else 2610228753Smm re_add_entry(iso9660, re); 2611228753Smm } 2612228753Smm if (nexted_re) { 2613228753Smm /* 2614228753Smm * Do not expose this at this time 2615228753Smm * because we have not gotten its full-path 2616228753Smm * name yet. 2617228753Smm */ 2618228753Smm continue; 2619228753Smm } 2620228753Smm } else if ((file->mode & AE_IFMT) == AE_IFDIR) { 2621228753Smm int r; 2622228753Smm 2623228753Smm /* Read file entries in this dir. */ 2624228753Smm r = read_children(a, file); 2625228753Smm if (r != ARCHIVE_OK) 2626228753Smm return (r); 2627228753Smm 2628228753Smm /* 2629228753Smm * Handle a special dir of Rockridge extensions, 2630228753Smm * "rr_moved". 2631228753Smm */ 2632228753Smm if (file->rr_moved) { 2633228753Smm /* 2634228753Smm * If this has only the subdirectories which 2635228753Smm * have "RE" flags, do not expose at this time. 2636228753Smm */ 2637228753Smm if (file->rr_moved_has_re_only) 2638228753Smm continue; 2639228753Smm /* Otherwise expose "rr_moved" entry. */ 2640228753Smm } else if (file->re) { 2641228753Smm /* 2642228753Smm * Do not expose this at this time 2643228753Smm * because we have not gotten its full-path 2644228753Smm * name yet. 2645228753Smm */ 2646228753Smm re_add_entry(iso9660, file); 2647228753Smm continue; 2648228753Smm } else if (file->re_descendant) { 2649228753Smm /* 2650228753Smm * If the top level "RE" entry of this entry 2651228753Smm * is not exposed, we, accordingly, should not 2652228753Smm * expose this entry at this time because 2653228753Smm * we cannot make its proper full-path name. 2654228753Smm */ 2655228753Smm if (rede_add_entry(file) == 0) 2656228753Smm continue; 2657228753Smm /* Otherwise we can expose this entry because 2658228753Smm * it seems its top level "RE" has already been 2659228753Smm * exposed. */ 2660228753Smm } 2661228753Smm } 2662228753Smm break; 2663228753Smm } 2664228753Smm 2665228753Smm if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1) 2666228753Smm return (ARCHIVE_OK); 2667228753Smm 2668228753Smm count = 0; 2669228753Smm number = file->number; 2670228753Smm iso9660->cache_files.first = NULL; 2671228753Smm iso9660->cache_files.last = &(iso9660->cache_files.first); 2672228753Smm empty_files.first = NULL; 2673228753Smm empty_files.last = &empty_files.first; 2674228753Smm /* Collect files which has the same file serial number. 2675228753Smm * Peek pending_files so that file which number is different 2676228753Smm * is not put bak. */ 2677228753Smm while (iso9660->pending_files.used > 0 && 2678228753Smm (iso9660->pending_files.files[0]->number == -1 || 2679228753Smm iso9660->pending_files.files[0]->number == number)) { 2680228753Smm if (file->number == -1) { 2681228753Smm /* This file has the same offset 2682228753Smm * but it's wrong offset which empty files 2683228753Smm * and symlink files have. 2684228753Smm * NOTE: This wrong offse was recorded by 2685228753Smm * old mkisofs utility. If ISO images is 2686228753Smm * created by latest mkisofs, this does not 2687228753Smm * happen. 2688228753Smm */ 2689228753Smm file->next = NULL; 2690228753Smm *empty_files.last = file; 2691228753Smm empty_files.last = &(file->next); 2692228753Smm } else { 2693228753Smm count++; 2694228753Smm cache_add_entry(iso9660, file); 2695228753Smm } 2696228753Smm file = next_entry(iso9660); 2697228753Smm } 2698228753Smm 2699228753Smm if (count == 0) { 2700228753Smm *pfile = file; 2701228753Smm return ((file == NULL)?ARCHIVE_EOF:ARCHIVE_OK); 2702228753Smm } 2703228753Smm if (file->number == -1) { 2704228753Smm file->next = NULL; 2705228753Smm *empty_files.last = file; 2706228753Smm empty_files.last = &(file->next); 2707228753Smm } else { 2708228753Smm count++; 2709228753Smm cache_add_entry(iso9660, file); 2710228753Smm } 2711228753Smm 2712228753Smm if (count > 1) { 2713228753Smm /* The count is the same as number of hardlink, 2714228753Smm * so much so that each nlinks of files in cache_file 2715228753Smm * is overwritten by value of the count. 2716228753Smm */ 2717228753Smm for (file = iso9660->cache_files.first; 2718228753Smm file != NULL; file = file->next) 2719228753Smm file->nlinks = count; 2720228753Smm } 2721228753Smm /* If there are empty files, that files are added 2722228753Smm * to the tail of the cache_files. */ 2723228753Smm if (empty_files.first != NULL) { 2724228753Smm *iso9660->cache_files.last = empty_files.first; 2725228753Smm iso9660->cache_files.last = empty_files.last; 2726228753Smm } 2727228753Smm *pfile = cache_get_entry(iso9660); 2728228753Smm return ((*pfile == NULL)?ARCHIVE_EOF:ARCHIVE_OK); 2729228753Smm 2730228753Smmfatal_rr: 2731228753Smm archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, 2732228753Smm "Failed to connect 'CL' pointer to 'RE' rr_moved pointer of" 2733228753Smm "Rockridge extensions"); 2734228753Smm return (ARCHIVE_FATAL); 2735228753Smm} 2736228753Smm 2737228753Smmstatic inline void 2738228753Smmre_add_entry(struct iso9660 *iso9660, struct file_info *file) 2739228753Smm{ 2740228753Smm file->re_next = NULL; 2741228753Smm *iso9660->re_files.last = file; 2742228753Smm iso9660->re_files.last = &(file->re_next); 2743228753Smm} 2744228753Smm 2745228753Smmstatic inline struct file_info * 2746228753Smmre_get_entry(struct iso9660 *iso9660) 2747228753Smm{ 2748228753Smm struct file_info *file; 2749228753Smm 2750228753Smm if ((file = iso9660->re_files.first) != NULL) { 2751228753Smm iso9660->re_files.first = file->re_next; 2752228753Smm if (iso9660->re_files.first == NULL) 2753228753Smm iso9660->re_files.last = 2754228753Smm &(iso9660->re_files.first); 2755228753Smm } 2756228753Smm return (file); 2757228753Smm} 2758228753Smm 2759228753Smmstatic inline int 2760228753Smmrede_add_entry(struct file_info *file) 2761228753Smm{ 2762228753Smm struct file_info *re; 2763228753Smm 2764229592Smm /* 2765229592Smm * Find "RE" entry. 2766229592Smm */ 2767228753Smm re = file->parent; 2768229592Smm while (re != NULL && !re->re) 2769228753Smm re = re->parent; 2770228753Smm if (re == NULL) 2771228753Smm return (-1); 2772228753Smm 2773228753Smm file->re_next = NULL; 2774228753Smm *re->rede_files.last = file; 2775228753Smm re->rede_files.last = &(file->re_next); 2776228753Smm return (0); 2777228753Smm} 2778228753Smm 2779228753Smmstatic inline struct file_info * 2780228753Smmrede_get_entry(struct file_info *re) 2781228753Smm{ 2782228753Smm struct file_info *file; 2783228753Smm 2784228753Smm if ((file = re->rede_files.first) != NULL) { 2785228753Smm re->rede_files.first = file->re_next; 2786228753Smm if (re->rede_files.first == NULL) 2787228753Smm re->rede_files.last = 2788228753Smm &(re->rede_files.first); 2789228753Smm } 2790228753Smm return (file); 2791228753Smm} 2792228753Smm 2793228753Smmstatic inline void 2794228753Smmcache_add_entry(struct iso9660 *iso9660, struct file_info *file) 2795228753Smm{ 2796228753Smm file->next = NULL; 2797228753Smm *iso9660->cache_files.last = file; 2798228753Smm iso9660->cache_files.last = &(file->next); 2799228753Smm} 2800228753Smm 2801228753Smmstatic inline struct file_info * 2802228753Smmcache_get_entry(struct iso9660 *iso9660) 2803228753Smm{ 2804228753Smm struct file_info *file; 2805228753Smm 2806228753Smm if ((file = iso9660->cache_files.first) != NULL) { 2807228753Smm iso9660->cache_files.first = file->next; 2808228753Smm if (iso9660->cache_files.first == NULL) 2809228753Smm iso9660->cache_files.last = &(iso9660->cache_files.first); 2810228753Smm } 2811228753Smm return (file); 2812228753Smm} 2813228753Smm 2814228753Smmstatic void 2815228753Smmheap_add_entry(struct heap_queue *heap, struct file_info *file, uint64_t key) 2816228753Smm{ 2817228753Smm uint64_t file_key, parent_key; 2818228753Smm int hole, parent; 2819228753Smm 2820228753Smm /* Expand our pending files list as necessary. */ 2821228753Smm if (heap->used >= heap->allocated) { 2822228753Smm struct file_info **new_pending_files; 2823228753Smm int new_size = heap->allocated * 2; 2824228753Smm 2825228753Smm if (heap->allocated < 1024) 2826228753Smm new_size = 1024; 2827228753Smm /* Overflow might keep us from growing the list. */ 2828228753Smm if (new_size <= heap->allocated) 2829228753Smm __archive_errx(1, "Out of memory"); 2830228753Smm new_pending_files = (struct file_info **) 2831228753Smm malloc(new_size * sizeof(new_pending_files[0])); 2832228753Smm if (new_pending_files == NULL) 2833228753Smm __archive_errx(1, "Out of memory"); 2834228753Smm memcpy(new_pending_files, heap->files, 2835228753Smm heap->allocated * sizeof(new_pending_files[0])); 2836228753Smm if (heap->files != NULL) 2837228753Smm free(heap->files); 2838228753Smm heap->files = new_pending_files; 2839228753Smm heap->allocated = new_size; 2840228753Smm } 2841228753Smm 2842228753Smm file_key = file->key = key; 2843228753Smm 2844228753Smm /* 2845228753Smm * Start with hole at end, walk it up tree to find insertion point. 2846228753Smm */ 2847228753Smm hole = heap->used++; 2848228753Smm while (hole > 0) { 2849228753Smm parent = (hole - 1)/2; 2850228753Smm parent_key = heap->files[parent]->key; 2851228753Smm if (file_key >= parent_key) { 2852228753Smm heap->files[hole] = file; 2853228753Smm return; 2854228753Smm } 2855228753Smm // Move parent into hole <==> move hole up tree. 2856228753Smm heap->files[hole] = heap->files[parent]; 2857228753Smm hole = parent; 2858228753Smm } 2859228753Smm heap->files[0] = file; 2860228753Smm} 2861228753Smm 2862228753Smmstatic struct file_info * 2863228753Smmheap_get_entry(struct heap_queue *heap) 2864228753Smm{ 2865228753Smm uint64_t a_key, b_key, c_key; 2866228753Smm int a, b, c; 2867228753Smm struct file_info *r, *tmp; 2868228753Smm 2869228753Smm if (heap->used < 1) 2870228753Smm return (NULL); 2871228753Smm 2872228753Smm /* 2873228753Smm * The first file in the list is the earliest; we'll return this. 2874228753Smm */ 2875228753Smm r = heap->files[0]; 2876228753Smm 2877228753Smm /* 2878228753Smm * Move the last item in the heap to the root of the tree 2879228753Smm */ 2880228753Smm heap->files[0] = heap->files[--(heap->used)]; 2881228753Smm 2882228753Smm /* 2883228753Smm * Rebalance the heap. 2884228753Smm */ 2885228753Smm a = 0; // Starting element and its heap key 2886228753Smm a_key = heap->files[a]->key; 2887228753Smm for (;;) { 2888228753Smm b = a + a + 1; // First child 2889228753Smm if (b >= heap->used) 2890228753Smm return (r); 2891228753Smm b_key = heap->files[b]->key; 2892228753Smm c = b + 1; // Use second child if it is smaller. 2893228753Smm if (c < heap->used) { 2894228753Smm c_key = heap->files[c]->key; 2895228753Smm if (c_key < b_key) { 2896228753Smm b = c; 2897228753Smm b_key = c_key; 2898228753Smm } 2899228753Smm } 2900228753Smm if (a_key <= b_key) 2901228753Smm return (r); 2902228753Smm tmp = heap->files[a]; 2903228753Smm heap->files[a] = heap->files[b]; 2904228753Smm heap->files[b] = tmp; 2905228753Smm a = b; 2906228753Smm } 2907228753Smm} 2908228753Smm 2909228753Smmstatic unsigned int 2910228753Smmtoi(const void *p, int n) 2911228753Smm{ 2912228753Smm const unsigned char *v = (const unsigned char *)p; 2913228753Smm if (n > 1) 2914228753Smm return v[0] + 256 * toi(v + 1, n - 1); 2915228753Smm if (n == 1) 2916228753Smm return v[0]; 2917228753Smm return (0); 2918228753Smm} 2919228753Smm 2920228753Smmstatic time_t 2921228753Smmisodate7(const unsigned char *v) 2922228753Smm{ 2923228753Smm struct tm tm; 2924228753Smm int offset; 2925228753Smm memset(&tm, 0, sizeof(tm)); 2926228753Smm tm.tm_year = v[0]; 2927228753Smm tm.tm_mon = v[1] - 1; 2928228753Smm tm.tm_mday = v[2]; 2929228753Smm tm.tm_hour = v[3]; 2930228753Smm tm.tm_min = v[4]; 2931228753Smm tm.tm_sec = v[5]; 2932228753Smm /* v[6] is the signed timezone offset, in 1/4-hour increments. */ 2933228753Smm offset = ((const signed char *)v)[6]; 2934228753Smm if (offset > -48 && offset < 52) { 2935228753Smm tm.tm_hour -= offset / 4; 2936228753Smm tm.tm_min -= (offset % 4) * 15; 2937228753Smm } 2938228753Smm return (time_from_tm(&tm)); 2939228753Smm} 2940228753Smm 2941228753Smmstatic time_t 2942228753Smmisodate17(const unsigned char *v) 2943228753Smm{ 2944228753Smm struct tm tm; 2945228753Smm int offset; 2946228753Smm memset(&tm, 0, sizeof(tm)); 2947228753Smm tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100 2948228753Smm + (v[2] - '0') * 10 + (v[3] - '0') 2949228753Smm - 1900; 2950228753Smm tm.tm_mon = (v[4] - '0') * 10 + (v[5] - '0'); 2951228753Smm tm.tm_mday = (v[6] - '0') * 10 + (v[7] - '0'); 2952228753Smm tm.tm_hour = (v[8] - '0') * 10 + (v[9] - '0'); 2953228753Smm tm.tm_min = (v[10] - '0') * 10 + (v[11] - '0'); 2954228753Smm tm.tm_sec = (v[12] - '0') * 10 + (v[13] - '0'); 2955228753Smm /* v[16] is the signed timezone offset, in 1/4-hour increments. */ 2956228753Smm offset = ((const signed char *)v)[16]; 2957228753Smm if (offset > -48 && offset < 52) { 2958228753Smm tm.tm_hour -= offset / 4; 2959228753Smm tm.tm_min -= (offset % 4) * 15; 2960228753Smm } 2961228753Smm return (time_from_tm(&tm)); 2962228753Smm} 2963228753Smm 2964228753Smmstatic time_t 2965228753Smmtime_from_tm(struct tm *t) 2966228753Smm{ 2967228753Smm#if HAVE_TIMEGM 2968228753Smm /* Use platform timegm() if available. */ 2969228753Smm return (timegm(t)); 2970228753Smm#else 2971228753Smm /* Else use direct calculation using POSIX assumptions. */ 2972228753Smm /* First, fix up tm_yday based on the year/month/day. */ 2973228753Smm mktime(t); 2974228753Smm /* Then we can compute timegm() from first principles. */ 2975228753Smm return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600 2976228753Smm + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000 2977228753Smm + ((t->tm_year - 69) / 4) * 86400 - 2978228753Smm ((t->tm_year - 1) / 100) * 86400 2979228753Smm + ((t->tm_year + 299) / 400) * 86400); 2980228753Smm#endif 2981228753Smm} 2982228753Smm 2983228753Smmstatic const char * 2984228753Smmbuild_pathname(struct archive_string *as, struct file_info *file) 2985228753Smm{ 2986228753Smm if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) { 2987228753Smm build_pathname(as, file->parent); 2988228753Smm archive_strcat(as, "/"); 2989228753Smm } 2990228753Smm if (archive_strlen(&file->name) == 0) 2991228753Smm archive_strcat(as, "."); 2992228753Smm else 2993228753Smm archive_string_concat(as, &file->name); 2994228753Smm return (as->s); 2995228753Smm} 2996228753Smm 2997228753Smm#if DEBUG 2998228753Smmstatic void 2999228753Smmdump_isodirrec(FILE *out, const unsigned char *isodirrec) 3000228753Smm{ 3001228753Smm fprintf(out, " l %d,", 3002228753Smm toi(isodirrec + DR_length_offset, DR_length_size)); 3003228753Smm fprintf(out, " a %d,", 3004228753Smm toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size)); 3005228753Smm fprintf(out, " ext 0x%x,", 3006228753Smm toi(isodirrec + DR_extent_offset, DR_extent_size)); 3007228753Smm fprintf(out, " s %d,", 3008228753Smm toi(isodirrec + DR_size_offset, DR_extent_size)); 3009228753Smm fprintf(out, " f 0x%02x,", 3010228753Smm toi(isodirrec + DR_flags_offset, DR_flags_size)); 3011228753Smm fprintf(out, " u %d,", 3012228753Smm toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size)); 3013228753Smm fprintf(out, " ilv %d,", 3014228753Smm toi(isodirrec + DR_interleave_offset, DR_interleave_size)); 3015228753Smm fprintf(out, " seq %d,", 3016228753Smm toi(isodirrec + DR_volume_sequence_number_offset, DR_volume_sequence_number_size)); 3017228753Smm fprintf(out, " nl %d:", 3018228753Smm toi(isodirrec + DR_name_len_offset, DR_name_len_size)); 3019228753Smm fprintf(out, " `%.*s'", 3020228753Smm toi(isodirrec + DR_name_len_offset, DR_name_len_size), isodirrec + DR_name_offset); 3021228753Smm} 3022228753Smm#endif 3023