diff options
Diffstat (limited to 'lib/libarchive/archive_read_support_format_iso9660.c')
| -rw-r--r-- | lib/libarchive/archive_read_support_format_iso9660.c | 2956 |
1 files changed, 0 insertions, 2956 deletions
diff --git a/lib/libarchive/archive_read_support_format_iso9660.c b/lib/libarchive/archive_read_support_format_iso9660.c deleted file mode 100644 index 0216461..0000000 --- a/lib/libarchive/archive_read_support_format_iso9660.c +++ /dev/null @@ -1,2956 +0,0 @@ -/*- - * Copyright (c) 2003-2007 Tim Kientzle - * Copyright (c) 2009 Andreas Henriksson <andreas@fatal.se> - * Copyright (c) 2009-2011 Michihiro NAKAJIMA - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include "archive_platform.h" -__FBSDID("$FreeBSD$"); - -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif -/* #include <stdint.h> */ /* See archive_platform.h */ -#include <stdio.h> -#ifdef HAVE_STDLIB_H -#include <stdlib.h> -#endif -#ifdef HAVE_STRING_H -#include <string.h> -#endif -#include <time.h> -#ifdef HAVE_ZLIB_H -#include <zlib.h> -#endif - -#include "archive.h" -#include "archive_endian.h" -#include "archive_entry.h" -#include "archive_private.h" -#include "archive_read_private.h" -#include "archive_string.h" - -/* - * An overview of ISO 9660 format: - * - * Each disk is laid out as follows: - * * 32k reserved for private use - * * Volume descriptor table. Each volume descriptor - * is 2k and specifies basic format information. - * The "Primary Volume Descriptor" (PVD) is defined by the - * standard and should always be present; other volume - * descriptors include various vendor-specific extensions. - * * Files and directories. Each file/dir is specified by - * an "extent" (starting sector and length in bytes). - * Dirs are just files with directory records packed one - * after another. The PVD contains a single dir entry - * specifying the location of the root directory. Everything - * else follows from there. - * - * This module works by first reading the volume descriptors, then - * building a list of directory entries, sorted by starting - * sector. At each step, I look for the earliest dir entry that - * hasn't yet been read, seek forward to that location and read - * that entry. If it's a dir, I slurp in the new dir entries and - * add them to the heap; if it's a regular file, I return the - * corresponding archive_entry and wait for the client to request - * the file body. This strategy allows us to read most compliant - * CDs with a single pass through the data, as required by libarchive. - */ -#define LOGICAL_BLOCK_SIZE 2048 -#define SYSTEM_AREA_BLOCK 16 - -/* Structure of on-disk primary volume descriptor. */ -#define PVD_type_offset 0 -#define PVD_type_size 1 -#define PVD_id_offset (PVD_type_offset + PVD_type_size) -#define PVD_id_size 5 -#define PVD_version_offset (PVD_id_offset + PVD_id_size) -#define PVD_version_size 1 -#define PVD_reserved1_offset (PVD_version_offset + PVD_version_size) -#define PVD_reserved1_size 1 -#define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size) -#define PVD_system_id_size 32 -#define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size) -#define PVD_volume_id_size 32 -#define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size) -#define PVD_reserved2_size 8 -#define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size) -#define PVD_volume_space_size_size 8 -#define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size) -#define PVD_reserved3_size 32 -#define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size) -#define PVD_volume_set_size_size 4 -#define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size) -#define PVD_volume_sequence_number_size 4 -#define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size) -#define PVD_logical_block_size_size 4 -#define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size) -#define PVD_path_table_size_size 8 -#define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size) -#define PVD_type_1_path_table_size 4 -#define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size) -#define PVD_opt_type_1_path_table_size 4 -#define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size) -#define PVD_type_m_path_table_size 4 -#define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size) -#define PVD_opt_type_m_path_table_size 4 -#define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size) -#define PVD_root_directory_record_size 34 -#define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size) -#define PVD_volume_set_id_size 128 -#define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size) -#define PVD_publisher_id_size 128 -#define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size) -#define PVD_preparer_id_size 128 -#define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size) -#define PVD_application_id_size 128 -#define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size) -#define PVD_copyright_file_id_size 37 -#define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size) -#define PVD_abstract_file_id_size 37 -#define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size) -#define PVD_bibliographic_file_id_size 37 -#define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size) -#define PVD_creation_date_size 17 -#define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size) -#define PVD_modification_date_size 17 -#define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size) -#define PVD_expiration_date_size 17 -#define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size) -#define PVD_effective_date_size 17 -#define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size) -#define PVD_file_structure_version_size 1 -#define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size) -#define PVD_reserved4_size 1 -#define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size) -#define PVD_application_data_size 512 -#define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size) -#define PVD_reserved5_size (2048 - PVD_reserved5_offset) - -/* TODO: It would make future maintenance easier to just hardcode the - * above values. In particular, ECMA119 states the offsets as part of - * the standard. That would eliminate the need for the following check.*/ -#if PVD_reserved5_offset != 1395 -#error PVD offset and size definitions are wrong. -#endif - - -/* Structure of optional on-disk supplementary volume descriptor. */ -#define SVD_type_offset 0 -#define SVD_type_size 1 -#define SVD_id_offset (SVD_type_offset + SVD_type_size) -#define SVD_id_size 5 -#define SVD_version_offset (SVD_id_offset + SVD_id_size) -#define SVD_version_size 1 -/* ... */ -#define SVD_reserved1_offset 72 -#define SVD_reserved1_size 8 -#define SVD_volume_space_size_offset 80 -#define SVD_volume_space_size_size 8 -#define SVD_escape_sequences_offset (SVD_volume_space_size_offset + SVD_volume_space_size_size) -#define SVD_escape_sequences_size 32 -/* ... */ -#define SVD_logical_block_size_offset 128 -#define SVD_logical_block_size_size 4 -#define SVD_type_L_path_table_offset 140 -#define SVD_type_M_path_table_offset 148 -/* ... */ -#define SVD_root_directory_record_offset 156 -#define SVD_root_directory_record_size 34 -#define SVD_file_structure_version_offset 881 -#define SVD_reserved2_offset 882 -#define SVD_reserved2_size 1 -#define SVD_reserved3_offset 1395 -#define SVD_reserved3_size 653 -/* ... */ -/* FIXME: validate correctness of last SVD entry offset. */ - -/* Structure of an on-disk directory record. */ -/* Note: ISO9660 stores each multi-byte integer twice, once in - * each byte order. The sizes here are the size of just one - * of the two integers. (This is why the offset of a field isn't - * the same as the offset+size of the previous field.) */ -#define DR_length_offset 0 -#define DR_length_size 1 -#define DR_ext_attr_length_offset 1 -#define DR_ext_attr_length_size 1 -#define DR_extent_offset 2 -#define DR_extent_size 4 -#define DR_size_offset 10 -#define DR_size_size 4 -#define DR_date_offset 18 -#define DR_date_size 7 -#define DR_flags_offset 25 -#define DR_flags_size 1 -#define DR_file_unit_size_offset 26 -#define DR_file_unit_size_size 1 -#define DR_interleave_offset 27 -#define DR_interleave_size 1 -#define DR_volume_sequence_number_offset 28 -#define DR_volume_sequence_number_size 2 -#define DR_name_len_offset 32 -#define DR_name_len_size 1 -#define DR_name_offset 33 - -#ifdef HAVE_ZLIB_H -static const unsigned char zisofs_magic[8] = { - 0x37, 0xE4, 0x53, 0x96, 0xC9, 0xDB, 0xD6, 0x07 -}; - -struct zisofs { - /* Set 1 if this file compressed by paged zlib */ - int pz; - int pz_log2_bs; /* Log2 of block size */ - uint64_t pz_uncompressed_size; - - int initialized; - unsigned char *uncompressed_buffer; - size_t uncompressed_buffer_size; - - uint32_t pz_offset; - unsigned char header[16]; - size_t header_avail; - int header_passed; - unsigned char *block_pointers; - size_t block_pointers_alloc; - size_t block_pointers_size; - size_t block_pointers_avail; - size_t block_off; - uint32_t block_avail; - - z_stream stream; - int stream_valid; -}; -#else -struct zisofs { - /* Set 1 if this file compressed by paged zlib */ - int pz; -}; -#endif - -struct content { - uint64_t offset;/* Offset on disk. */ - uint64_t size; /* File size in bytes. */ - struct content *next; -}; - -/* In-memory storage for a directory record. */ -struct file_info { - struct file_info *use_next; - struct file_info *parent; - struct file_info *next; - struct file_info *re_next; - int subdirs; - uint64_t key; /* Heap Key. */ - uint64_t offset; /* Offset on disk. */ - uint64_t size; /* File size in bytes. */ - uint32_t ce_offset; /* Offset of CE. */ - uint32_t ce_size; /* Size of CE. */ - char rr_moved; /* Flag to rr_moved. */ - char rr_moved_has_re_only; - char re; /* Having RRIP "RE" extension. */ - char re_descendant; - uint64_t cl_offset; /* Having RRIP "CL" extension. */ - int birthtime_is_set; - time_t birthtime; /* File created time. */ - time_t mtime; /* File last modified time. */ - time_t atime; /* File last accessed time. */ - time_t ctime; /* File attribute change time. */ - uint64_t rdev; /* Device number. */ - mode_t mode; - uid_t uid; - gid_t gid; - int64_t number; - int nlinks; - struct archive_string name; /* Pathname */ - char name_continues; /* Non-zero if name continues */ - struct archive_string symlink; - char symlink_continues; /* Non-zero if link continues */ - /* Set 1 if this file compressed by paged zlib(zisofs) */ - int pz; - int pz_log2_bs; /* Log2 of block size */ - uint64_t pz_uncompressed_size; - /* Set 1 if this file is multi extent. */ - int multi_extent; - struct { - struct content *first; - struct content **last; - } contents; - struct { - struct file_info *first; - struct file_info **last; - } rede_files; -}; - -struct heap_queue { - struct file_info **files; - int allocated; - int used; -}; - -struct iso9660 { - int magic; -#define ISO9660_MAGIC 0x96609660 - - int opt_support_joliet; - int opt_support_rockridge; - - struct archive_string pathname; - char seenRockridge; /* Set true if RR extensions are used. */ - char seenSUSP; /* Set true if SUSP is beging used. */ - char seenJoliet; - - unsigned char suspOffset; - struct file_info *rr_moved; - struct read_ce_queue { - struct read_ce_req { - uint64_t offset;/* Offset of CE on disk. */ - struct file_info *file; - } *reqs; - int cnt; - int allocated; - } read_ce_req; - - int64_t previous_number; - struct archive_string previous_pathname; - - struct file_info *use_files; - struct heap_queue pending_files; - struct { - struct file_info *first; - struct file_info **last; - } cache_files; - struct { - struct file_info *first; - struct file_info **last; - } re_files; - - uint64_t current_position; - ssize_t logical_block_size; - uint64_t volume_size; /* Total size of volume in bytes. */ - int32_t volume_block;/* Total size of volume in logical blocks. */ - - struct vd { - int location; /* Location of Extent. */ - uint32_t size; - } primary, joliet; - - off_t entry_sparse_offset; - int64_t entry_bytes_remaining; - struct zisofs entry_zisofs; - struct content *entry_content; -}; - -static int archive_read_format_iso9660_bid(struct archive_read *); -static int archive_read_format_iso9660_options(struct archive_read *, - const char *, const char *); -static int archive_read_format_iso9660_cleanup(struct archive_read *); -static int archive_read_format_iso9660_read_data(struct archive_read *, - const void **, size_t *, off_t *); -static int archive_read_format_iso9660_read_data_skip(struct archive_read *); -static int archive_read_format_iso9660_read_header(struct archive_read *, - struct archive_entry *); -static const char *build_pathname(struct archive_string *, struct file_info *); -#if DEBUG -static void dump_isodirrec(FILE *, const unsigned char *isodirrec); -#endif -static time_t time_from_tm(struct tm *); -static time_t isodate17(const unsigned char *); -static time_t isodate7(const unsigned char *); -static int isBootRecord(struct iso9660 *, const unsigned char *); -static int isVolumePartition(struct iso9660 *, const unsigned char *); -static int isVDSetTerminator(struct iso9660 *, const unsigned char *); -static int isJolietSVD(struct iso9660 *, const unsigned char *); -static int isSVD(struct iso9660 *, const unsigned char *); -static int isEVD(struct iso9660 *, const unsigned char *); -static int isPVD(struct iso9660 *, const unsigned char *); -static int next_cache_entry(struct archive_read *, struct iso9660 *, - struct file_info **); -static int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660, - struct file_info **pfile); -static struct file_info * - parse_file_info(struct archive_read *a, - struct file_info *parent, const unsigned char *isodirrec); -static int parse_rockridge(struct archive_read *a, - struct file_info *file, const unsigned char *start, - const unsigned char *end); -static int register_CE(struct archive_read *a, int32_t location, - struct file_info *file); -static int read_CE(struct archive_read *a, struct iso9660 *iso9660); -static void parse_rockridge_NM1(struct file_info *, - const unsigned char *, int); -static void parse_rockridge_SL1(struct file_info *, - const unsigned char *, int); -static void parse_rockridge_TF1(struct file_info *, - const unsigned char *, int); -static void parse_rockridge_ZF1(struct file_info *, - const unsigned char *, int); -static void register_file(struct iso9660 *, struct file_info *); -static void release_files(struct iso9660 *); -static unsigned toi(const void *p, int n); -static inline void re_add_entry(struct iso9660 *, struct file_info *); -static inline struct file_info * re_get_entry(struct iso9660 *); -static inline int rede_add_entry(struct file_info *); -static inline struct file_info * rede_get_entry(struct file_info *); -static inline void cache_add_entry(struct iso9660 *iso9660, - struct file_info *file); -static inline struct file_info *cache_get_entry(struct iso9660 *iso9660); -static void heap_add_entry(struct heap_queue *heap, - struct file_info *file, uint64_t key); -static struct file_info *heap_get_entry(struct heap_queue *heap); - -#define add_entry(iso9660, file) \ - heap_add_entry(&((iso9660)->pending_files), file, file->offset) -#define next_entry(iso9660) \ - heap_get_entry(&((iso9660)->pending_files)) - -int -archive_read_support_format_iso9660(struct archive *_a) -{ - struct archive_read *a = (struct archive_read *)_a; - struct iso9660 *iso9660; - int r; - - iso9660 = (struct iso9660 *)malloc(sizeof(*iso9660)); - if (iso9660 == NULL) { - archive_set_error(&a->archive, ENOMEM, "Can't allocate iso9660 data"); - return (ARCHIVE_FATAL); - } - memset(iso9660, 0, sizeof(*iso9660)); - iso9660->magic = ISO9660_MAGIC; - iso9660->cache_files.first = NULL; - iso9660->cache_files.last = &(iso9660->cache_files.first); - iso9660->re_files.first = NULL; - iso9660->re_files.last = &(iso9660->re_files.first); - /* Enable to support Joliet extensions by default. */ - iso9660->opt_support_joliet = 1; - /* Enable to support Rock Ridge extensions by default. */ - iso9660->opt_support_rockridge = 1; - - r = __archive_read_register_format(a, - iso9660, - "iso9660", - archive_read_format_iso9660_bid, - archive_read_format_iso9660_options, - archive_read_format_iso9660_read_header, - archive_read_format_iso9660_read_data, - archive_read_format_iso9660_read_data_skip, - archive_read_format_iso9660_cleanup); - - if (r != ARCHIVE_OK) { - free(iso9660); - return (r); - } - return (ARCHIVE_OK); -} - - -static int -archive_read_format_iso9660_bid(struct archive_read *a) -{ - struct iso9660 *iso9660; - ssize_t bytes_read; - const void *h; - const unsigned char *p; - int seenTerminator; - - iso9660 = (struct iso9660 *)(a->format->data); - - /* - * Skip the first 32k (reserved area) and get the first - * 8 sectors of the volume descriptor table. Of course, - * if the I/O layer gives us more, we'll take it. - */ -#define RESERVED_AREA (SYSTEM_AREA_BLOCK * LOGICAL_BLOCK_SIZE) - h = __archive_read_ahead(a, - RESERVED_AREA + 8 * LOGICAL_BLOCK_SIZE, - &bytes_read); - if (h == NULL) - return (-1); - p = (const unsigned char *)h; - - /* Skip the reserved area. */ - bytes_read -= RESERVED_AREA; - p += RESERVED_AREA; - - /* Check each volume descriptor. */ - seenTerminator = 0; - for (; bytes_read > LOGICAL_BLOCK_SIZE; - bytes_read -= LOGICAL_BLOCK_SIZE, p += LOGICAL_BLOCK_SIZE) { - /* Do not handle undefined Volume Descriptor Type. */ - if (p[0] >= 4 && p[0] <= 254) - return (0); - /* Standard Identifier must be "CD001" */ - if (memcmp(p + 1, "CD001", 5) != 0) - return (0); - if (!iso9660->primary.location) { - if (isPVD(iso9660, p)) - continue; - } - if (!iso9660->joliet.location) { - if (isJolietSVD(iso9660, p)) - continue; - } - if (isBootRecord(iso9660, p)) - continue; - if (isEVD(iso9660, p)) - continue; - if (isSVD(iso9660, p)) - continue; - if (isVolumePartition(iso9660, p)) - continue; - if (isVDSetTerminator(iso9660, p)) { - seenTerminator = 1; - break; - } - return (0); - } - /* - * ISO 9660 format must have Primary Volume Descriptor and - * Volume Descriptor Set Terminator. - */ - if (seenTerminator && iso9660->primary.location > 16) - return (48); - - /* We didn't find a valid PVD; return a bid of zero. */ - return (0); -} - -static int -archive_read_format_iso9660_options(struct archive_read *a, - const char *key, const char *val) -{ - struct iso9660 *iso9660; - - iso9660 = (struct iso9660 *)(a->format->data); - - if (strcmp(key, "joliet") == 0) { - if (val == NULL || strcmp(val, "off") == 0 || - strcmp(val, "ignore") == 0 || - strcmp(val, "disable") == 0 || - strcmp(val, "0") == 0) - iso9660->opt_support_joliet = 0; - else - iso9660->opt_support_joliet = 1; - return (ARCHIVE_OK); - } - if (strcmp(key, "rockridge") == 0 || - strcmp(key, "Rockridge") == 0) { - iso9660->opt_support_rockridge = val != NULL; - return (ARCHIVE_OK); - } - - /* Note: The "warn" return is just to inform the options - * supervisor that we didn't handle it. It will generate - * a suitable error if noone used this option. */ - return (ARCHIVE_WARN); -} - -static int -isBootRecord(struct iso9660 *iso9660, const unsigned char *h) -{ - (void)iso9660; /* UNUSED */ - - /* Type of the Volume Descriptor Boot Record must be 0. */ - if (h[0] != 0) - return (0); - - /* Volume Descriptor Version must be 1. */ - if (h[6] != 1) - return (0); - - return (1); -} - -static int -isVolumePartition(struct iso9660 *iso9660, const unsigned char *h) -{ - int32_t location; - - /* Type of the Volume Partition Descriptor must be 3. */ - if (h[0] != 3) - return (0); - - /* Volume Descriptor Version must be 1. */ - if (h[6] != 1) - return (0); - /* Unused Field */ - if (h[7] != 0) - return (0); - - location = archive_le32dec(h + 72); - if (location <= SYSTEM_AREA_BLOCK || - location >= iso9660->volume_block) - return (0); - if ((uint32_t)location != archive_be32dec(h + 76)) - return (0); - - return (1); -} - -static int -isVDSetTerminator(struct iso9660 *iso9660, const unsigned char *h) -{ - int i; - - (void)iso9660; /* UNUSED */ - - /* Type of the Volume Descriptor Set Terminator must be 255. */ - if (h[0] != 255) - return (0); - - /* Volume Descriptor Version must be 1. */ - if (h[6] != 1) - return (0); - - /* Reserved field must be 0. */ - for (i = 7; i < 2048; ++i) - if (h[i] != 0) - return (0); - - return (1); -} - -static int -isJolietSVD(struct iso9660 *iso9660, const unsigned char *h) -{ - const unsigned char *p; - ssize_t logical_block_size; - int32_t volume_block; - - /* Check if current sector is a kind of Supplementary Volume - * Descriptor. */ - if (!isSVD(iso9660, h)) - return (0); - - /* FIXME: do more validations according to joliet spec. */ - - /* check if this SVD contains joliet extension! */ - p = h + SVD_escape_sequences_offset; - /* N.B. Joliet spec says p[1] == '\\', but.... */ - if (p[0] == '%' && p[1] == '/') { - int level = 0; - - if (p[2] == '@') - level = 1; - else if (p[2] == 'C') - level = 2; - else if (p[2] == 'E') - level = 3; - else /* not joliet */ - return (0); - - iso9660->seenJoliet = level; - - } else /* not joliet */ - return (0); - - logical_block_size = - archive_le16dec(h + SVD_logical_block_size_offset); - volume_block = archive_le32dec(h + SVD_volume_space_size_offset); - - iso9660->logical_block_size = logical_block_size; - iso9660->volume_block = volume_block; - iso9660->volume_size = logical_block_size * (uint64_t)volume_block; - /* Read Root Directory Record in Volume Descriptor. */ - p = h + SVD_root_directory_record_offset; - iso9660->joliet.location = archive_le32dec(p + DR_extent_offset); - iso9660->joliet.size = archive_le32dec(p + DR_size_offset); - - return (48); -} - -static int -isSVD(struct iso9660 *iso9660, const unsigned char *h) -{ - const unsigned char *p; - ssize_t logical_block_size; - int32_t volume_block; - int32_t location; - int i; - - (void)iso9660; /* UNUSED */ - - /* Type 2 means it's a SVD. */ - if (h[SVD_type_offset] != 2) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < SVD_reserved1_size; ++i) - if (h[SVD_reserved1_offset + i] != 0) - return (0); - for (i = 0; i < SVD_reserved2_size; ++i) - if (h[SVD_reserved2_offset + i] != 0) - return (0); - for (i = 0; i < SVD_reserved3_size; ++i) - if (h[SVD_reserved3_offset + i] != 0) - return (0); - - /* File structure version must be 1 for ISO9660/ECMA119. */ - if (h[SVD_file_structure_version_offset] != 1) - return (0); - - logical_block_size = - archive_le16dec(h + SVD_logical_block_size_offset); - if (logical_block_size <= 0) - return (0); - - volume_block = archive_le32dec(h + SVD_volume_space_size_offset); - if (volume_block <= SYSTEM_AREA_BLOCK+4) - return (0); - - /* Location of Occurrence of Type L Path Table must be - * available location, - * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_le32dec(h+SVD_type_L_path_table_offset); - if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) - return (0); - - /* The Type M Path Table must be at a valid location (WinISO - * and probably other programs omit this, so we allow zero) - * - * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_be32dec(h+SVD_type_M_path_table_offset); - if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) - || location >= volume_block) - return (0); - - /* Read Root Directory Record in Volume Descriptor. */ - p = h + SVD_root_directory_record_offset; - if (p[DR_length_offset] != 34) - return (0); - - return (48); -} - -static int -isEVD(struct iso9660 *iso9660, const unsigned char *h) -{ - const unsigned char *p; - ssize_t logical_block_size; - int32_t volume_block; - int32_t location; - int i; - - (void)iso9660; /* UNUSED */ - - /* Type of the Enhanced Volume Descriptor must be 2. */ - if (h[PVD_type_offset] != 2) - return (0); - - /* EVD version must be 2. */ - if (h[PVD_version_offset] != 2) - return (0); - - /* Reserved field must be 0. */ - if (h[PVD_reserved1_offset] != 0) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved2_size; ++i) - if (h[PVD_reserved2_offset + i] != 0) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved3_size; ++i) - if (h[PVD_reserved3_offset + i] != 0) - return (0); - - /* Logical block size must be > 0. */ - /* I've looked at Ecma 119 and can't find any stronger - * restriction on this field. */ - logical_block_size = - archive_le16dec(h + PVD_logical_block_size_offset); - if (logical_block_size <= 0) - return (0); - - volume_block = - archive_le32dec(h + PVD_volume_space_size_offset); - if (volume_block <= SYSTEM_AREA_BLOCK+4) - return (0); - - /* File structure version must be 2 for ISO9660:1999. */ - if (h[PVD_file_structure_version_offset] != 2) - return (0); - - /* Location of Occurrence of Type L Path Table must be - * available location, - * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_le32dec(h+PVD_type_1_path_table_offset); - if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) - return (0); - - /* Location of Occurrence of Type M Path Table must be - * available location, - * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_be32dec(h+PVD_type_m_path_table_offset); - if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) - || location >= volume_block) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved4_size; ++i) - if (h[PVD_reserved4_offset + i] != 0) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved5_size; ++i) - if (h[PVD_reserved5_offset + i] != 0) - return (0); - - /* Read Root Directory Record in Volume Descriptor. */ - p = h + PVD_root_directory_record_offset; - if (p[DR_length_offset] != 34) - return (0); - - return (48); -} - -static int -isPVD(struct iso9660 *iso9660, const unsigned char *h) -{ - const unsigned char *p; - ssize_t logical_block_size; - int32_t volume_block; - int32_t location; - int i; - - /* Type of the Primary Volume Descriptor must be 1. */ - if (h[PVD_type_offset] != 1) - return (0); - - /* PVD version must be 1. */ - if (h[PVD_version_offset] != 1) - return (0); - - /* Reserved field must be 0. */ - if (h[PVD_reserved1_offset] != 0) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved2_size; ++i) - if (h[PVD_reserved2_offset + i] != 0) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved3_size; ++i) - if (h[PVD_reserved3_offset + i] != 0) - return (0); - - /* Logical block size must be > 0. */ - /* I've looked at Ecma 119 and can't find any stronger - * restriction on this field. */ - logical_block_size = - archive_le16dec(h + PVD_logical_block_size_offset); - if (logical_block_size <= 0) - return (0); - - volume_block = archive_le32dec(h + PVD_volume_space_size_offset); - if (volume_block <= SYSTEM_AREA_BLOCK+4) - return (0); - - /* File structure version must be 1 for ISO9660/ECMA119. */ - if (h[PVD_file_structure_version_offset] != 1) - return (0); - - /* Location of Occurrence of Type L Path Table must be - * available location, - * > SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_le32dec(h+PVD_type_1_path_table_offset); - if (location < SYSTEM_AREA_BLOCK+2 || location >= volume_block) - return (0); - - /* The Type M Path Table must also be at a valid location - * (although ECMA 119 requires a Type M Path Table, WinISO and - * probably other programs omit it, so we permit a zero here) - * - * >= SYSTEM_AREA_BLOCK(16) + 2 and < Volume Space Size. */ - location = archive_be32dec(h+PVD_type_m_path_table_offset); - if ((location > 0 && location < SYSTEM_AREA_BLOCK+2) - || location >= volume_block) - return (0); - - /* Reserved field must be 0. */ - /* FreeBSD: makefs erroneously created images with 0x20 */ - for (i = 0; i < PVD_reserved4_size; ++i) - if (h[PVD_reserved4_offset + i] != 0 && - h[PVD_reserved4_offset + i] != 32) - return (0); - - /* Reserved field must be 0. */ - for (i = 0; i < PVD_reserved5_size; ++i) - if (h[PVD_reserved5_offset + i] != 0) - return (0); - - /* XXX TODO: Check other values for sanity; reject more - * malformed PVDs. XXX */ - - /* Read Root Directory Record in Volume Descriptor. */ - p = h + PVD_root_directory_record_offset; - if (p[DR_length_offset] != 34) - return (0); - - iso9660->logical_block_size = logical_block_size; - iso9660->volume_block = volume_block; - iso9660->volume_size = logical_block_size * (uint64_t)volume_block; - iso9660->primary.location = archive_le32dec(p + DR_extent_offset); - iso9660->primary.size = archive_le32dec(p + DR_size_offset); - - return (48); -} - -static int -read_children(struct archive_read *a, struct file_info *parent) -{ - struct iso9660 *iso9660; - const unsigned char *b, *p; - struct file_info *multi; - size_t step; - - iso9660 = (struct iso9660 *)(a->format->data); - if (iso9660->current_position > parent->offset) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Ignoring out-of-order directory (%s) %jd > %jd", - parent->name.s, - iso9660->current_position, - parent->offset); - return (ARCHIVE_WARN); - } - if (parent->offset + parent->size > iso9660->volume_size) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Directory is beyond end-of-media: %s", - parent->name); - return (ARCHIVE_WARN); - } - if (iso9660->current_position < parent->offset) { - int64_t skipsize; - - skipsize = parent->offset - iso9660->current_position; - skipsize = __archive_read_skip(a, skipsize); - if (skipsize < 0) - return ((int)skipsize); - iso9660->current_position = parent->offset; - } - - step = ((parent->size + iso9660->logical_block_size -1) / - iso9660->logical_block_size) * iso9660->logical_block_size; - b = __archive_read_ahead(a, step, NULL); - if (b == NULL) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Failed to read full block when scanning " - "ISO9660 directory list"); - return (ARCHIVE_FATAL); - } - __archive_read_consume(a, step); - iso9660->current_position += step; - multi = NULL; - while (step) { - p = b; - b += iso9660->logical_block_size; - step -= iso9660->logical_block_size; - for (; *p != 0 && p < b && p + *p <= b; p += *p) { - struct file_info *child; - - /* N.B.: these special directory identifiers - * are 8 bit "values" even on a - * Joliet CD with UCS-2 (16bit) encoding. - */ - - /* Skip '.' entry. */ - if (*(p + DR_name_len_offset) == 1 - && *(p + DR_name_offset) == '\0') - continue; - /* Skip '..' entry. */ - if (*(p + DR_name_len_offset) == 1 - && *(p + DR_name_offset) == '\001') - continue; - child = parse_file_info(a, parent, p); - if (child == NULL) - return (ARCHIVE_FATAL); - if (child->cl_offset == 0 && - (child->multi_extent || multi != NULL)) { - struct content *con; - - if (multi == NULL) { - multi = child; - multi->contents.first = NULL; - multi->contents.last = - &(multi->contents.first); - } - con = malloc(sizeof(struct content)); - if (con == NULL) { - archive_set_error( - &a->archive, ENOMEM, - "No memory for " - "multi extent"); - return (ARCHIVE_FATAL); - } - con->offset = child->offset; - con->size = child->size; - con->next = NULL; - *multi->contents.last = con; - multi->contents.last = &(con->next); - if (multi == child) - add_entry(iso9660, child); - else { - multi->size += child->size; - if (!child->multi_extent) - multi = NULL; - } - } else - add_entry(iso9660, child); - } - } - - /* Read data which recorded by RRIP "CE" extension. */ - if (read_CE(a, iso9660) != ARCHIVE_OK) - return (ARCHIVE_FATAL); - - return (ARCHIVE_OK); -} - -static int -archive_read_format_iso9660_read_header(struct archive_read *a, - struct archive_entry *entry) -{ - struct iso9660 *iso9660; - struct file_info *file; - int r, rd_r = ARCHIVE_OK; - - iso9660 = (struct iso9660 *)(a->format->data); - - if (!a->archive.archive_format) { - a->archive.archive_format = ARCHIVE_FORMAT_ISO9660; - a->archive.archive_format_name = "ISO9660"; - } - - if (iso9660->current_position == 0) { - int64_t skipsize; - struct vd *vd; - const void *block; - char seenJoliet; - - vd = &(iso9660->primary); - if (!iso9660->opt_support_joliet) - iso9660->seenJoliet = 0; - if (iso9660->seenJoliet && - vd->location > iso9660->joliet.location) - /* This condition is unlikely; by way of caution. */ - vd = &(iso9660->joliet); - - skipsize = LOGICAL_BLOCK_SIZE * vd->location; - skipsize = __archive_read_skip(a, skipsize); - if (skipsize < 0) - return ((int)skipsize); - iso9660->current_position = skipsize; - - block = __archive_read_ahead(a, vd->size, NULL); - if (block == NULL) { - archive_set_error(&a->archive, - ARCHIVE_ERRNO_MISC, - "Failed to read full block when scanning " - "ISO9660 directory list"); - return (ARCHIVE_FATAL); - } - - /* - * While reading Root Directory, flag seenJoliet - * must be zero to avoid converting special name - * 0x00(Current Directory) and next byte to UCS2. - */ - seenJoliet = iso9660->seenJoliet;/* Save flag. */ - iso9660->seenJoliet = 0; - file = parse_file_info(a, NULL, block); - if (file == NULL) - return (ARCHIVE_FATAL); - iso9660->seenJoliet = seenJoliet; - if (vd == &(iso9660->primary) && iso9660->seenRockridge - && iso9660->seenJoliet) - /* - * If iso image has RockRidge and Joliet, - * we use RockRidge Extensions. - */ - iso9660->seenJoliet = 0; - if (vd == &(iso9660->primary) && !iso9660->seenRockridge - && iso9660->seenJoliet) { - /* Switch reading data from primary to joliet. */ - vd = &(iso9660->joliet); - skipsize = LOGICAL_BLOCK_SIZE * vd->location; - skipsize -= iso9660->current_position; - skipsize = __archive_read_skip(a, skipsize); - if (skipsize < 0) - return ((int)skipsize); - iso9660->current_position += skipsize; - - block = __archive_read_ahead(a, vd->size, NULL); - if (block == NULL) { - archive_set_error(&a->archive, - ARCHIVE_ERRNO_MISC, - "Failed to read full block when scanning " - "ISO9660 directory list"); - return (ARCHIVE_FATAL); - } - seenJoliet = iso9660->seenJoliet;/* Save flag. */ - iso9660->seenJoliet = 0; - file = parse_file_info(a, NULL, block); - if (file == NULL) - return (ARCHIVE_FATAL); - iso9660->seenJoliet = seenJoliet; - } - /* Store the root directory in the pending list. */ - add_entry(iso9660, file); - if (iso9660->seenRockridge) { - a->archive.archive_format = - ARCHIVE_FORMAT_ISO9660_ROCKRIDGE; - a->archive.archive_format_name = - "ISO9660 with Rockridge extensions"; - } - } - - /* Get the next entry that appears after the current offset. */ - r = next_entry_seek(a, iso9660, &file); - if (r != ARCHIVE_OK) - return (r); - - iso9660->entry_bytes_remaining = file->size; - iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */ - - if (file->offset + file->size > iso9660->volume_size) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "File is beyond end-of-media: %s", file->name); - iso9660->entry_bytes_remaining = 0; - iso9660->entry_sparse_offset = 0; - return (ARCHIVE_WARN); - } - - /* Set up the entry structure with information about this entry. */ - archive_entry_set_mode(entry, file->mode); - archive_entry_set_uid(entry, file->uid); - archive_entry_set_gid(entry, file->gid); - archive_entry_set_nlink(entry, file->nlinks); - if (file->birthtime_is_set) - archive_entry_set_birthtime(entry, file->birthtime, 0); - else - archive_entry_unset_birthtime(entry); - archive_entry_set_mtime(entry, file->mtime, 0); - archive_entry_set_ctime(entry, file->ctime, 0); - archive_entry_set_atime(entry, file->atime, 0); - /* N.B.: Rock Ridge supports 64-bit device numbers. */ - archive_entry_set_rdev(entry, (dev_t)file->rdev); - archive_entry_set_size(entry, iso9660->entry_bytes_remaining); - archive_string_empty(&iso9660->pathname); - archive_entry_set_pathname(entry, - build_pathname(&iso9660->pathname, file)); - if (file->symlink.s != NULL) - archive_entry_copy_symlink(entry, file->symlink.s); - - /* Note: If the input isn't seekable, we can't rewind to - * return the same body again, so if the next entry refers to - * the same data, we have to return it as a hardlink to the - * original entry. */ - if (file->number != -1 && - file->number == iso9660->previous_number) { - archive_entry_set_hardlink(entry, - iso9660->previous_pathname.s); - archive_entry_unset_size(entry); - iso9660->entry_bytes_remaining = 0; - iso9660->entry_sparse_offset = 0; - return (ARCHIVE_OK); - } - - /* Except for the hardlink case above, if the offset of the - * next entry is before our current position, we can't seek - * backwards to extract it, so issue a warning. Note that - * this can only happen if this entry was added to the heap - * after we passed this offset, that is, only if the directory - * mentioning this entry is later than the body of the entry. - * Such layouts are very unusual; most ISO9660 writers lay out - * and record all directory information first, then store - * all file bodies. */ - /* TODO: Someday, libarchive's I/O core will support optional - * seeking. When that day comes, this code should attempt to - * seek and only return the error if the seek fails. That - * will give us support for whacky ISO images that require - * seeking while retaining the ability to read almost all ISO - * images in a streaming fashion. */ - if ((file->mode & AE_IFMT) != AE_IFDIR && - file->offset < iso9660->current_position) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Ignoring out-of-order file @%x (%s) %jd < %jd", - file, - iso9660->pathname.s, - file->offset, iso9660->current_position); - iso9660->entry_bytes_remaining = 0; - iso9660->entry_sparse_offset = 0; - return (ARCHIVE_WARN); - } - - /* Initialize zisofs variables. */ - iso9660->entry_zisofs.pz = file->pz; - if (file->pz) { -#ifdef HAVE_ZLIB_H - struct zisofs *zisofs; - - zisofs = &iso9660->entry_zisofs; - zisofs->initialized = 0; - zisofs->pz_log2_bs = file->pz_log2_bs; - zisofs->pz_uncompressed_size = file->pz_uncompressed_size; - zisofs->pz_offset = 0; - zisofs->header_avail = 0; - zisofs->header_passed = 0; - zisofs->block_pointers_avail = 0; -#endif - archive_entry_set_size(entry, file->pz_uncompressed_size); - } - - iso9660->previous_number = file->number; - archive_strcpy(&iso9660->previous_pathname, iso9660->pathname.s); - - /* Reset entry_bytes_remaining if the file is multi extent. */ - iso9660->entry_content = file->contents.first; - if (iso9660->entry_content != NULL) - iso9660->entry_bytes_remaining = iso9660->entry_content->size; - - if (archive_entry_filetype(entry) == AE_IFDIR) { - /* Overwrite nlinks by proper link number which is - * calculated from number of sub directories. */ - archive_entry_set_nlink(entry, 2 + file->subdirs); - /* Directory data has been read completely. */ - iso9660->entry_bytes_remaining = 0; - iso9660->entry_sparse_offset = 0; - } - - if (rd_r != ARCHIVE_OK) - return (rd_r); - return (ARCHIVE_OK); -} - -static int -archive_read_format_iso9660_read_data_skip(struct archive_read *a) -{ - /* Because read_next_header always does an explicit skip - * to the next entry, we don't need to do anything here. */ - (void)a; /* UNUSED */ - return (ARCHIVE_OK); -} - -#ifdef HAVE_ZLIB_H - -static int -zisofs_read_data(struct archive_read *a, - const void **buff, size_t *size, off_t *offset) -{ - struct iso9660 *iso9660; - struct zisofs *zisofs; - const unsigned char *p; - size_t avail; - ssize_t bytes_read; - size_t uncompressed_size; - int r; - - iso9660 = (struct iso9660 *)(a->format->data); - zisofs = &iso9660->entry_zisofs; - - p = __archive_read_ahead(a, 1, &bytes_read); - if (bytes_read <= 0) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, - "Truncated zisofs file body"); - return (ARCHIVE_FATAL); - } - if (bytes_read > iso9660->entry_bytes_remaining) - bytes_read = iso9660->entry_bytes_remaining; - avail = bytes_read; - uncompressed_size = 0; - - if (!zisofs->initialized) { - size_t ceil, xsize; - - /* Allocate block pointers buffer. */ - ceil = (zisofs->pz_uncompressed_size + - (1LL << zisofs->pz_log2_bs) - 1) - >> zisofs->pz_log2_bs; - xsize = (ceil + 1) * 4; - if (zisofs->block_pointers_alloc < xsize) { - size_t alloc; - - if (zisofs->block_pointers != NULL) - free(zisofs->block_pointers); - alloc = ((xsize >> 10) + 1) << 10; - zisofs->block_pointers = malloc(alloc); - if (zisofs->block_pointers == NULL) { - archive_set_error(&a->archive, ENOMEM, - "No memory for zisofs decompression"); - return (ARCHIVE_FATAL); - } - zisofs->block_pointers_alloc = alloc; - } - zisofs->block_pointers_size = xsize; - - /* Allocate uncompressed data buffer. */ - xsize = 1UL << zisofs->pz_log2_bs; - if (zisofs->uncompressed_buffer_size < xsize) { - if (zisofs->uncompressed_buffer != NULL) - free(zisofs->uncompressed_buffer); - zisofs->uncompressed_buffer = malloc(xsize); - if (zisofs->uncompressed_buffer == NULL) { - archive_set_error(&a->archive, ENOMEM, - "No memory for zisofs decompression"); - return (ARCHIVE_FATAL); - } - } - zisofs->uncompressed_buffer_size = xsize; - - /* - * Read the file header, and check the magic code of zisofs. - */ - if (zisofs->header_avail < sizeof(zisofs->header)) { - xsize = sizeof(zisofs->header) - zisofs->header_avail; - if (avail < xsize) - xsize = avail; - memcpy(zisofs->header + zisofs->header_avail, p, xsize); - zisofs->header_avail += xsize; - avail -= xsize; - p += xsize; - } - if (!zisofs->header_passed && - zisofs->header_avail == sizeof(zisofs->header)) { - int err = 0; - - if (memcmp(zisofs->header, zisofs_magic, - sizeof(zisofs_magic)) != 0) - err = 1; - if (archive_le32dec(zisofs->header + 8) - != zisofs->pz_uncompressed_size) - err = 1; - if (zisofs->header[12] != 4) - err = 1; - if (zisofs->header[13] != zisofs->pz_log2_bs) - err = 1; - if (err) { - archive_set_error(&a->archive, - ARCHIVE_ERRNO_FILE_FORMAT, - "Illegal zisofs file body"); - return (ARCHIVE_FATAL); - } - zisofs->header_passed = 1; - } - /* - * Read block pointers. - */ - if (zisofs->header_passed && - zisofs->block_pointers_avail < zisofs->block_pointers_size) { - xsize = zisofs->block_pointers_size - - zisofs->block_pointers_avail; - if (avail < xsize) - xsize = avail; - memcpy(zisofs->block_pointers - + zisofs->block_pointers_avail, p, xsize); - zisofs->block_pointers_avail += xsize; - avail -= xsize; - p += xsize; - if (zisofs->block_pointers_avail - == zisofs->block_pointers_size) { - /* We've got all block pointers and initialize - * related variables. */ - zisofs->block_off = 0; - zisofs->block_avail = 0; - /* Complete a initialization */ - zisofs->initialized = 1; - } - } - - if (!zisofs->initialized) - goto next_data; /* We need more datas. */ - } - - /* - * Get block offsets from block pointers. - */ - if (zisofs->block_avail == 0) { - uint32_t bst, bed; - - if (zisofs->block_off + 4 >= zisofs->block_pointers_size) { - /* There isn't a pair of offsets. */ - archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, - "Illegal zisofs block pointers"); - return (ARCHIVE_FATAL); - } - bst = archive_le32dec(zisofs->block_pointers + zisofs->block_off); - if (bst != zisofs->pz_offset + (bytes_read - avail)) { - /* TODO: Should we seek offset of current file by bst ? */ - archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, - "Illegal zisofs block pointers(cannot seek)"); - return (ARCHIVE_FATAL); - } - bed = archive_le32dec( - zisofs->block_pointers + zisofs->block_off + 4); - if (bed < bst) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, - "Illegal zisofs block pointers"); - return (ARCHIVE_FATAL); - } - zisofs->block_avail = bed - bst; - zisofs->block_off += 4; - - /* Initialize compression library for new block. */ - if (zisofs->stream_valid) - r = inflateReset(&zisofs->stream); - else - r = inflateInit(&zisofs->stream); - if (r != Z_OK) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Can't initialize zisofs decompression."); - return (ARCHIVE_FATAL); - } - zisofs->stream_valid = 1; - zisofs->stream.total_in = 0; - zisofs->stream.total_out = 0; - } - - /* - * Make uncompressed datas. - */ - if (zisofs->block_avail == 0) { - memset(zisofs->uncompressed_buffer, 0, - zisofs->uncompressed_buffer_size); - uncompressed_size = zisofs->uncompressed_buffer_size; - } else { - zisofs->stream.next_in = (Bytef *)(uintptr_t)(const void *)p; - if (avail > zisofs->block_avail) - zisofs->stream.avail_in = zisofs->block_avail; - else - zisofs->stream.avail_in = avail; - zisofs->stream.next_out = zisofs->uncompressed_buffer; - zisofs->stream.avail_out = zisofs->uncompressed_buffer_size; - - r = inflate(&zisofs->stream, 0); - switch (r) { - case Z_OK: /* Decompressor made some progress.*/ - case Z_STREAM_END: /* Found end of stream. */ - break; - default: - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "zisofs decompression failed (%d)", r); - return (ARCHIVE_FATAL); - } - uncompressed_size = - zisofs->uncompressed_buffer_size - zisofs->stream.avail_out; - avail -= zisofs->stream.next_in - p; - zisofs->block_avail -= zisofs->stream.next_in - p; - } -next_data: - bytes_read -= avail; - *buff = zisofs->uncompressed_buffer; - *size = uncompressed_size; - *offset = iso9660->entry_sparse_offset; - iso9660->entry_sparse_offset += uncompressed_size; - iso9660->entry_bytes_remaining -= bytes_read; - iso9660->current_position += bytes_read; - zisofs->pz_offset += bytes_read; - __archive_read_consume(a, bytes_read); - - return (ARCHIVE_OK); -} - -#else /* HAVE_ZLIB_H */ - -static int -zisofs_read_data(struct archive_read *a, - const void **buff, size_t *size, off_t *offset) -{ - - (void)buff;/* UNUSED */ - (void)size;/* UNUSED */ - (void)offset;/* UNUSED */ - archive_set_error(&a->archive, ARCHIVE_ERRNO_FILE_FORMAT, - "zisofs is not supported on this platform."); - return (ARCHIVE_FAILED); -} - -#endif /* HAVE_ZLIB_H */ - -static int -archive_read_format_iso9660_read_data(struct archive_read *a, - const void **buff, size_t *size, off_t *offset) -{ - ssize_t bytes_read; - struct iso9660 *iso9660; - - iso9660 = (struct iso9660 *)(a->format->data); - if (iso9660->entry_bytes_remaining <= 0) { - if (iso9660->entry_content != NULL) - iso9660->entry_content = iso9660->entry_content->next; - if (iso9660->entry_content == NULL) { - *buff = NULL; - *size = 0; - *offset = iso9660->entry_sparse_offset; - return (ARCHIVE_EOF); - } - /* Seek forward to the start of the entry. */ - if (iso9660->current_position < iso9660->entry_content->offset) { - int64_t step; - - step = iso9660->entry_content->offset - - iso9660->current_position; - step = __archive_read_skip(a, step); - if (step < 0) - return ((int)step); - iso9660->current_position = - iso9660->entry_content->offset; - } - if (iso9660->entry_content->offset < iso9660->current_position) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Ignoring out-of-order file (%s) %jd < %jd", - iso9660->pathname.s, - iso9660->entry_content->offset, - iso9660->current_position); - *buff = NULL; - *size = 0; - *offset = iso9660->entry_sparse_offset; - return (ARCHIVE_WARN); - } - iso9660->entry_bytes_remaining = iso9660->entry_content->size; - } - if (iso9660->entry_zisofs.pz) - return (zisofs_read_data(a, buff, size, offset)); - - *buff = __archive_read_ahead(a, 1, &bytes_read); - if (bytes_read == 0) - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Truncated input file"); - if (*buff == NULL) - return (ARCHIVE_FATAL); - if (bytes_read > iso9660->entry_bytes_remaining) - bytes_read = iso9660->entry_bytes_remaining; - *size = bytes_read; - *offset = iso9660->entry_sparse_offset; - iso9660->entry_sparse_offset += bytes_read; - iso9660->entry_bytes_remaining -= bytes_read; - iso9660->current_position += bytes_read; - __archive_read_consume(a, bytes_read); - return (ARCHIVE_OK); -} - -static int -archive_read_format_iso9660_cleanup(struct archive_read *a) -{ - struct iso9660 *iso9660; - int r = ARCHIVE_OK; - - iso9660 = (struct iso9660 *)(a->format->data); - release_files(iso9660); - free(iso9660->read_ce_req.reqs); - archive_string_free(&iso9660->pathname); - archive_string_free(&iso9660->previous_pathname); - if (iso9660->pending_files.files) - free(iso9660->pending_files.files); -#ifdef HAVE_ZLIB_H - free(iso9660->entry_zisofs.uncompressed_buffer); - free(iso9660->entry_zisofs.block_pointers); - if (iso9660->entry_zisofs.stream_valid) { - if (inflateEnd(&iso9660->entry_zisofs.stream) != Z_OK) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Failed to clean up zlib decompressor"); - r = ARCHIVE_FATAL; - } - } -#endif - free(iso9660); - (a->format->data) = NULL; - return (r); -} - -/* - * This routine parses a single ISO directory record, makes sense - * of any extensions, and stores the result in memory. - */ -static struct file_info * -parse_file_info(struct archive_read *a, struct file_info *parent, - const unsigned char *isodirrec) -{ - struct iso9660 *iso9660; - struct file_info *file; - size_t name_len; - const unsigned char *rr_start, *rr_end; - const unsigned char *p; - size_t dr_len; - uint64_t fsize; - int32_t location; - int flags; - - iso9660 = (struct iso9660 *)(a->format->data); - - dr_len = (size_t)isodirrec[DR_length_offset]; - name_len = (size_t)isodirrec[DR_name_len_offset]; - location = archive_le32dec(isodirrec + DR_extent_offset); - fsize = toi(isodirrec + DR_size_offset, DR_size_size); - /* Sanity check that dr_len needs at least 34. */ - if (dr_len < 34) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Invalid length of directory record"); - return (NULL); - } - /* Sanity check that name_len doesn't exceed dr_len. */ - if (dr_len - 33 < name_len || name_len == 0) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Invalid length of file identifier"); - return (NULL); - } - /* Sanity check that location doesn't exceed volume block. - * Don't check lower limit of location; it's possibility - * the location has negative value when file type is symbolic - * link or file size is zero. As far as I know latest mkisofs - * do that. - */ - if (location > 0 && - (location + ((fsize + iso9660->logical_block_size -1) - / iso9660->logical_block_size)) > - (unsigned int)iso9660->volume_block) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Invalid location of extent of file"); - return (NULL); - } - - /* Create a new file entry and copy data from the ISO dir record. */ - file = (struct file_info *)malloc(sizeof(*file)); - if (file == NULL) { - archive_set_error(&a->archive, ENOMEM, - "No memory for file entry"); - return (NULL); - } - memset(file, 0, sizeof(*file)); - file->parent = parent; - file->offset = iso9660->logical_block_size * (uint64_t)location; - file->size = fsize; - file->mtime = isodate7(isodirrec + DR_date_offset); - file->ctime = file->atime = file->mtime; - file->rede_files.first = NULL; - file->rede_files.last = &(file->rede_files.first); - - p = isodirrec + DR_name_offset; - /* Rockridge extensions (if any) follow name. Compute this - * before fidgeting the name_len below. */ - rr_start = p + name_len + (name_len & 1 ? 0 : 1); - rr_end = isodirrec + dr_len; - - if (iso9660->seenJoliet) { - /* Joliet names are max 64 chars (128 bytes) according to spec, - * but genisoimage/mkisofs allows recording longer Joliet - * names which are 103 UCS2 characters(206 bytes) by their - * option '-joliet-long'. - */ - wchar_t wbuff[103+1], *wp; - const unsigned char *c; - - if (name_len > 206) - name_len = 206; - /* convert BE UTF-16 to wchar_t */ - for (c = p, wp = wbuff; - c < (p + name_len) && - wp < (wbuff + sizeof(wbuff)/sizeof(*wbuff) - 1); - c += 2) { - *wp++ = (((255 & (int)c[0]) << 8) | (255 & (int)c[1])); - } - *wp = L'\0'; - -#if 0 /* untested code, is it at all useful on Joliet? */ - /* trim trailing first version and dot from filename. - * - * Remember we where in UTF-16BE land! - * SEPARATOR 1 (.) and SEPARATOR 2 (;) are both - * 16 bits big endian characters on Joliet. - * - * TODO: sanitize filename? - * Joliet allows any UCS-2 char except: - * *, /, :, ;, ? and \. - */ - /* Chop off trailing ';1' from files. */ - if (*(wp-2) == ';' && *(wp-1) == '1') { - wp-=2; - *wp = L'\0'; - } - - /* Chop off trailing '.' from filenames. */ - if (*(wp-1) == '.') - *(--wp) = L'\0'; -#endif - - /* store the result in the file name field. */ - archive_strappend_w_utf8(&file->name, wbuff); - } else { - /* Chop off trailing ';1' from files. */ - if (name_len > 2 && p[name_len - 2] == ';' && - p[name_len - 1] == '1') - name_len -= 2; - /* Chop off trailing '.' from filenames. */ - if (name_len > 1 && p[name_len - 1] == '.') - --name_len; - - archive_strncpy(&file->name, (const char *)p, name_len); - } - - flags = isodirrec[DR_flags_offset]; - if (flags & 0x02) - file->mode = AE_IFDIR | 0700; - else - file->mode = AE_IFREG | 0400; - if (flags & 0x80) - file->multi_extent = 1; - else - file->multi_extent = 0; - /* - * Use location for file number. - * File number is treated as inode number to find out harlink - * target. If Rockridge extensions is being used, file number - * will be overwritten by FILE SERIAL NUMBER of RRIP "PX" - * extension. - * NOTE: Old mkisofs did not record that FILE SERIAL NUMBER - * in ISO images. - */ - if (file->size == 0 && location >= 0) - /* If file->size is zero, its location points wrong place. - * Dot not use it for file number. - * When location has negative value, it can be used - * for file number. - */ - file->number = -1; - else - file->number = (int64_t)(uint32_t)location; - - /* Rockridge extensions overwrite information from above. */ - if (iso9660->opt_support_rockridge) { - if (parent == NULL && rr_end - rr_start >= 7) { - p = rr_start; - if (p[0] == 'S' && p[1] == 'P' - && p[2] == 7 && p[3] == 1 - && p[4] == 0xBE && p[5] == 0xEF) { - /* - * SP extension stores the suspOffset - * (Number of bytes to skip between - * filename and SUSP records.) - * It is mandatory by the SUSP standard - * (IEEE 1281). - * - * It allows SUSP to coexist with - * non-SUSP uses of the System - * Use Area by placing non-SUSP data - * before SUSP data. - * - * SP extension must be in the root - * directory entry, disable all SUSP - * processing if not found. - */ - iso9660->suspOffset = p[6]; - iso9660->seenSUSP = 1; - rr_start += 7; - } - } - if (iso9660->seenSUSP) { - int r; - - file->name_continues = 0; - file->symlink_continues = 0; - rr_start += iso9660->suspOffset; - r = parse_rockridge(a, file, rr_start, rr_end); - if (r != ARCHIVE_OK) { - free(file); - return (NULL); - } - } else - /* If there isn't SUSP, disable parsing - * rock ridge extensions. */ - iso9660->opt_support_rockridge = 0; - } - - file->nlinks = 1;/* Reset nlink. we'll calculate it later. */ - /* Tell file's parent how many children that parent has. */ - if (parent != NULL && (flags & 0x02)) - parent->subdirs++; - - if (iso9660->seenRockridge) { - if (parent != NULL && parent->parent == NULL && - (flags & 0x02) && iso9660->rr_moved == NULL && - (strcmp(file->name.s, "rr_moved") == 0 || - strcmp(file->name.s, ".rr_moved") == 0)) { - iso9660->rr_moved = file; - file->rr_moved = 1; - file->rr_moved_has_re_only = 1; - file->re = 0; - parent->subdirs--; - } else if (file->re) { - /* This file's parent is not rr_moved, clear invalid - * "RE" mark. */ - if (parent == NULL || parent->rr_moved == 0) - file->re = 0; - else if ((flags & 0x02) == 0) { - file->rr_moved_has_re_only = 0; - file->re = 0; - } - } else if (parent != NULL && parent->rr_moved) - file->rr_moved_has_re_only = 0; - else if (parent != NULL && (flags & 0x02) && - (parent->re || parent->re_descendant)) - file->re_descendant = 1; - if (file->cl_offset != 0) { - parent->subdirs++; - /* Overwrite an offset and a number of this "CL" entry - * to appear before other dirs. "+1" to those is to - * make sure to appear after "RE" entry which this - * "CL" entry should be connected with. */ - file->offset = file->number = file->cl_offset + 1; - } - } - -#if DEBUG - /* DEBUGGING: Warn about attributes I don't yet fully support. */ - if ((flags & ~0x02) != 0) { - fprintf(stderr, "\n ** Unrecognized flag: "); - dump_isodirrec(stderr, isodirrec); - fprintf(stderr, "\n"); - } else if (toi(isodirrec + DR_volume_sequence_number_offset, 2) != 1) { - fprintf(stderr, "\n ** Unrecognized sequence number: "); - dump_isodirrec(stderr, isodirrec); - fprintf(stderr, "\n"); - } else if (*(isodirrec + DR_file_unit_size_offset) != 0) { - fprintf(stderr, "\n ** Unexpected file unit size: "); - dump_isodirrec(stderr, isodirrec); - fprintf(stderr, "\n"); - } else if (*(isodirrec + DR_interleave_offset) != 0) { - fprintf(stderr, "\n ** Unexpected interleave: "); - dump_isodirrec(stderr, isodirrec); - fprintf(stderr, "\n"); - } else if (*(isodirrec + DR_ext_attr_length_offset) != 0) { - fprintf(stderr, "\n ** Unexpected extended attribute length: "); - dump_isodirrec(stderr, isodirrec); - fprintf(stderr, "\n"); - } -#endif - register_file(iso9660, file); - return (file); -} - -static int -parse_rockridge(struct archive_read *a, struct file_info *file, - const unsigned char *p, const unsigned char *end) -{ - struct iso9660 *iso9660; - - iso9660 = (struct iso9660 *)(a->format->data); - - while (p + 4 <= end /* Enough space for another entry. */ - && p[0] >= 'A' && p[0] <= 'Z' /* Sanity-check 1st char of name. */ - && p[1] >= 'A' && p[1] <= 'Z' /* Sanity-check 2nd char of name. */ - && p[2] >= 4 /* Sanity-check length. */ - && p + p[2] <= end) { /* Sanity-check length. */ - const unsigned char *data = p + 4; - int data_length = p[2] - 4; - int version = p[3]; - - /* - * Yes, each 'if' here does test p[0] again. - * Otherwise, the fall-through handling to catch - * unsupported extensions doesn't work. - */ - switch(p[0]) { - case 'C': - if (p[0] == 'C' && p[1] == 'E') { - if (version == 1 && data_length == 24) { - /* - * CE extension comprises: - * 8 byte sector containing extension - * 8 byte offset w/in above sector - * 8 byte length of continuation - */ - int32_t location = - archive_le32dec(data); - file->ce_offset = - archive_le32dec(data+8); - file->ce_size = - archive_le32dec(data+16); - if (register_CE(a, location, file) - != ARCHIVE_OK) - return (ARCHIVE_FATAL); - } - break; - } - if (p[0] == 'C' && p[1] == 'L') { - if (version == 1 && data_length == 8) { - file->cl_offset = (uint64_t) - iso9660->logical_block_size * - (uint64_t)archive_le32dec(data); - iso9660->seenRockridge = 1; - } - break; - } - /* FALLTHROUGH */ - case 'N': - if (p[0] == 'N' && p[1] == 'M') { - if (version == 1) { - parse_rockridge_NM1(file, - data, data_length); - iso9660->seenRockridge = 1; - } - break; - } - /* FALLTHROUGH */ - case 'P': - if (p[0] == 'P' && p[1] == 'D') { - /* - * PD extension is padding; - * contents are always ignored. - */ - break; - } - if (p[0] == 'P' && p[1] == 'N') { - if (version == 1 && data_length == 16) { - file->rdev = toi(data,4); - file->rdev <<= 32; - file->rdev |= toi(data + 8, 4); - iso9660->seenRockridge = 1; - } - break; - } - if (p[0] == 'P' && p[1] == 'X') { - /* - * PX extension comprises: - * 8 bytes for mode, - * 8 bytes for nlinks, - * 8 bytes for uid, - * 8 bytes for gid, - * 8 bytes for inode. - */ - if (version == 1) { - if (data_length >= 8) - file->mode - = toi(data, 4); - if (data_length >= 16) - file->nlinks - = toi(data + 8, 4); - if (data_length >= 24) - file->uid - = toi(data + 16, 4); - if (data_length >= 32) - file->gid - = toi(data + 24, 4); - if (data_length >= 40) - file->number - = toi(data + 32, 4); - iso9660->seenRockridge = 1; - } - break; - } - /* FALLTHROUGH */ - case 'R': - if (p[0] == 'R' && p[1] == 'E' && version == 1) { - file->re = 1; - iso9660->seenRockridge = 1; - break; - } - if (p[0] == 'R' && p[1] == 'R' && version == 1) { - /* - * RR extension comprises: - * one byte flag value - * This extension is obsolete, - * so contents are always ignored. - */ - break; - } - /* FALLTHROUGH */ - case 'S': - if (p[0] == 'S' && p[1] == 'L') { - if (version == 1) { - parse_rockridge_SL1(file, - data, data_length); - iso9660->seenRockridge = 1; - } - break; - } - if (p[0] == 'S' && p[1] == 'T' - && data_length == 0 && version == 1) { - /* - * ST extension marks end of this - * block of SUSP entries. - * - * It allows SUSP to coexist with - * non-SUSP uses of the System - * Use Area by placing non-SUSP data - * after SUSP data. - */ - iso9660->seenSUSP = 0; - iso9660->seenRockridge = 0; - return (ARCHIVE_OK); - } - case 'T': - if (p[0] == 'T' && p[1] == 'F') { - if (version == 1) { - parse_rockridge_TF1(file, - data, data_length); - iso9660->seenRockridge = 1; - } - break; - } - /* FALLTHROUGH */ - case 'Z': - if (p[0] == 'Z' && p[1] == 'F') { - if (version == 1) - parse_rockridge_ZF1(file, - data, data_length); - break; - } - /* FALLTHROUGH */ - default: - /* The FALLTHROUGHs above leave us here for - * any unsupported extension. */ - break; - } - - - - p += p[2]; - } - return (ARCHIVE_OK); -} - -static int -register_CE(struct archive_read *a, int32_t location, - struct file_info *file) -{ - struct iso9660 *iso9660; - struct read_ce_queue *heap; - struct read_ce_req *p; - uint64_t offset, parent_offset; - int hole, parent; - - iso9660 = (struct iso9660 *)(a->format->data); - offset = ((uint64_t)location) * (uint64_t)iso9660->logical_block_size; - if (((file->mode & AE_IFMT) == AE_IFREG && - offset >= file->offset) || - offset < iso9660->current_position) { - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Invalid location in SUSP \"CE\" extension"); - return (ARCHIVE_FATAL); - } - - /* Expand our CE list as necessary. */ - heap = &(iso9660->read_ce_req); - if (heap->cnt >= heap->allocated) { - int new_size; - - if (heap->allocated < 16) - new_size = 16; - else - new_size = heap->allocated * 2; - /* Overflow might keep us from growing the list. */ - if (new_size <= heap->allocated) - __archive_errx(1, "Out of memory"); - p = malloc(new_size * sizeof(p[0])); - if (p == NULL) - __archive_errx(1, "Out of memory"); - if (heap->reqs != NULL) { - memcpy(p, heap->reqs, heap->cnt * sizeof(*p)); - free(heap->reqs); - } - heap->reqs = p; - heap->allocated = new_size; - } - - /* - * Start with hole at end, walk it up tree to find insertion point. - */ - hole = heap->cnt++; - while (hole > 0) { - parent = (hole - 1)/2; - parent_offset = heap->reqs[parent].offset; - if (offset >= parent_offset) { - heap->reqs[hole].offset = offset; - heap->reqs[hole].file = file; - return (ARCHIVE_OK); - } - // Move parent into hole <==> move hole up tree. - heap->reqs[hole] = heap->reqs[parent]; - hole = parent; - } - heap->reqs[0].offset = offset; - heap->reqs[0].file = file; - return (ARCHIVE_OK); -} - -static void -next_CE(struct read_ce_queue *heap) -{ - uint64_t a_offset, b_offset, c_offset; - int a, b, c; - struct read_ce_req tmp; - - if (heap->cnt < 1) - return; - - /* - * Move the last item in the heap to the root of the tree - */ - heap->reqs[0] = heap->reqs[--(heap->cnt)]; - - /* - * Rebalance the heap. - */ - a = 0; // Starting element and its offset - a_offset = heap->reqs[a].offset; - for (;;) { - b = a + a + 1; // First child - if (b >= heap->cnt) - return; - b_offset = heap->reqs[b].offset; - c = b + 1; // Use second child if it is smaller. - if (c < heap->cnt) { - c_offset = heap->reqs[c].offset; - if (c_offset < b_offset) { - b = c; - b_offset = c_offset; - } - } - if (a_offset <= b_offset) - return; - tmp = heap->reqs[a]; - heap->reqs[a] = heap->reqs[b]; - heap->reqs[b] = tmp; - a = b; - } -} - - -static int -read_CE(struct archive_read *a, struct iso9660 *iso9660) -{ - struct read_ce_queue *heap; - const unsigned char *b, *p, *end; - struct file_info *file; - size_t step; - int r; - - /* Read data which RRIP "CE" extension points. */ - heap = &(iso9660->read_ce_req); - step = iso9660->logical_block_size; - while (heap->cnt && - heap->reqs[0].offset == iso9660->current_position) { - b = __archive_read_ahead(a, step, NULL); - if (b == NULL) { - archive_set_error(&a->archive, - ARCHIVE_ERRNO_MISC, - "Failed to read full block when scanning " - "ISO9660 directory list"); - return (ARCHIVE_FATAL); - } - do { - file = heap->reqs[0].file; - p = b + file->ce_offset; - end = p + file->ce_size; - next_CE(heap); - r = parse_rockridge(a, file, p, end); - if (r != ARCHIVE_OK) - return (ARCHIVE_FATAL); - } while (heap->cnt && - heap->reqs[0].offset == iso9660->current_position); - /* NOTE: Do not move this consume's code to fron of - * do-while loop. Registration of nested CE extension - * might cause error because of current position. */ - __archive_read_consume(a, step); - iso9660->current_position += step; - } - return (ARCHIVE_OK); -} - -static void -parse_rockridge_NM1(struct file_info *file, - const unsigned char *data, int data_length) -{ - if (!file->name_continues) - archive_string_empty(&file->name); - file->name_continues = 0; - if (data_length < 1) - return; - /* - * NM version 1 extension comprises: - * 1 byte flag, value is one of: - * = 0: remainder is name - * = 1: remainder is name, next NM entry continues name - * = 2: "." - * = 4: ".." - * = 32: Implementation specific - * All other values are reserved. - */ - switch(data[0]) { - case 0: - if (data_length < 2) - return; - archive_strncat(&file->name, (const char *)data + 1, data_length - 1); - break; - case 1: - if (data_length < 2) - return; - archive_strncat(&file->name, (const char *)data + 1, data_length - 1); - file->name_continues = 1; - break; - case 2: - archive_strcat(&file->name, "."); - break; - case 4: - archive_strcat(&file->name, ".."); - break; - default: - return; - } - -} - -static void -parse_rockridge_TF1(struct file_info *file, const unsigned char *data, - int data_length) -{ - char flag; - /* - * TF extension comprises: - * one byte flag - * create time (optional) - * modify time (optional) - * access time (optional) - * attribute time (optional) - * Time format and presence of fields - * is controlled by flag bits. - */ - if (data_length < 1) - return; - flag = data[0]; - ++data; - --data_length; - if (flag & 0x80) { - /* Use 17-byte time format. */ - if ((flag & 1) && data_length >= 17) { - /* Create time. */ - file->birthtime_is_set = 1; - file->birthtime = isodate17(data); - data += 17; - data_length -= 17; - } - if ((flag & 2) && data_length >= 17) { - /* Modify time. */ - file->mtime = isodate17(data); - data += 17; - data_length -= 17; - } - if ((flag & 4) && data_length >= 17) { - /* Access time. */ - file->atime = isodate17(data); - data += 17; - data_length -= 17; - } - if ((flag & 8) && data_length >= 17) { - /* Attribute change time. */ - file->ctime = isodate17(data); - } - } else { - /* Use 7-byte time format. */ - if ((flag & 1) && data_length >= 7) { - /* Create time. */ - file->birthtime_is_set = 1; - file->birthtime = isodate7(data); - data += 7; - data_length -= 7; - } - if ((flag & 2) && data_length >= 7) { - /* Modify time. */ - file->mtime = isodate7(data); - data += 7; - data_length -= 7; - } - if ((flag & 4) && data_length >= 7) { - /* Access time. */ - file->atime = isodate7(data); - data += 7; - data_length -= 7; - } - if ((flag & 8) && data_length >= 7) { - /* Attribute change time. */ - file->ctime = isodate7(data); - } - } -} - -static void -parse_rockridge_SL1(struct file_info *file, const unsigned char *data, - int data_length) -{ - const char *separator = ""; - - if (!file->symlink_continues || file->symlink.length < 1) - archive_string_empty(&file->symlink); - else if (!file->symlink_continues && - file->symlink.s[file->symlink.length - 1] != '/') - separator = "/"; - file->symlink_continues = 0; - - /* - * Defined flag values: - * 0: This is the last SL record for this symbolic link - * 1: this symbolic link field continues in next SL entry - * All other values are reserved. - */ - if (data_length < 1) - return; - switch(*data) { - case 0: - break; - case 1: - file->symlink_continues = 1; - break; - default: - return; - } - ++data; /* Skip flag byte. */ - --data_length; - - /* - * SL extension body stores "components". - * Basically, this is a complicated way of storing - * a POSIX path. It also interferes with using - * symlinks for storing non-path data. <sigh> - * - * Each component is 2 bytes (flag and length) - * possibly followed by name data. - */ - while (data_length >= 2) { - unsigned char flag = *data++; - unsigned char nlen = *data++; - data_length -= 2; - - archive_strcat(&file->symlink, separator); - separator = "/"; - - switch(flag) { - case 0: /* Usual case, this is text. */ - if (data_length < nlen) - return; - archive_strncat(&file->symlink, - (const char *)data, nlen); - break; - case 0x01: /* Text continues in next component. */ - if (data_length < nlen) - return; - archive_strncat(&file->symlink, - (const char *)data, nlen); - separator = ""; - break; - case 0x02: /* Current dir. */ - archive_strcat(&file->symlink, "."); - break; - case 0x04: /* Parent dir. */ - archive_strcat(&file->symlink, ".."); - break; - case 0x08: /* Root of filesystem. */ - archive_strcat(&file->symlink, "/"); - separator = ""; - break; - case 0x10: /* Undefined (historically "volume root" */ - archive_string_empty(&file->symlink); - archive_strcat(&file->symlink, "ROOT"); - break; - case 0x20: /* Undefined (historically "hostname") */ - archive_strcat(&file->symlink, "hostname"); - break; - default: - /* TODO: issue a warning ? */ - return; - } - data += nlen; - data_length -= nlen; - } -} - -static void -parse_rockridge_ZF1(struct file_info *file, const unsigned char *data, - int data_length) -{ - - if (data[0] == 0x70 && data[1] == 0x7a && data_length == 12) { - /* paged zlib */ - file->pz = 1; - file->pz_log2_bs = data[3]; - file->pz_uncompressed_size = archive_le32dec(&data[4]); - } -} - -static void -register_file(struct iso9660 *iso9660, struct file_info *file) -{ - - file->use_next = iso9660->use_files; - iso9660->use_files = file; -} - -static void -release_files(struct iso9660 *iso9660) -{ - struct content *con, *connext; - struct file_info *file; - - file = iso9660->use_files; - while (file != NULL) { - struct file_info *next = file->use_next; - - archive_string_free(&file->name); - archive_string_free(&file->symlink); - con = file->contents.first; - while (con != NULL) { - connext = con->next; - free(con); - con = connext; - } - free(file); - file = next; - } -} - -static int -next_entry_seek(struct archive_read *a, struct iso9660 *iso9660, - struct file_info **pfile) -{ - struct file_info *file; - int r; - - r = next_cache_entry(a, iso9660, pfile); - if (r != ARCHIVE_OK) - return (r); - file = *pfile; - - /* Don't waste time seeking for zero-length bodies. */ - if (file->size == 0) - file->offset = iso9660->current_position; - - /* Seek forward to the start of the entry. */ - if (iso9660->current_position < file->offset) { - int64_t step; - - step = file->offset - iso9660->current_position; - step = __archive_read_skip(a, step); - if (step < 0) - return ((int)step); - iso9660->current_position = file->offset; - } - - /* We found body of file; handle it now. */ - return (ARCHIVE_OK); -} - -static int -next_cache_entry(struct archive_read *a, struct iso9660 *iso9660, - struct file_info **pfile) -{ - struct file_info *file; - struct { - struct file_info *first; - struct file_info **last; - } empty_files; - int64_t number; - int count; - - file = cache_get_entry(iso9660); - if (file != NULL) { - *pfile = file; - return (ARCHIVE_OK); - } - - for (;;) { - struct file_info *re, *d; - - *pfile = file = next_entry(iso9660); - if (file == NULL) { - /* - * If directory entries all which are descendant of - * rr_moved are stil remaning, expose their. - */ - if (iso9660->re_files.first != NULL && - iso9660->rr_moved != NULL && - iso9660->rr_moved->rr_moved_has_re_only) - /* Expose "rr_moved" entry. */ - cache_add_entry(iso9660, iso9660->rr_moved); - while ((re = re_get_entry(iso9660)) != NULL) { - /* Expose its descendant dirs. */ - while ((d = rede_get_entry(re)) != NULL) - cache_add_entry(iso9660, d); - } - if (iso9660->cache_files.first != NULL) - return (next_cache_entry(a, iso9660, pfile)); - return (ARCHIVE_EOF); - } - - if (file->cl_offset) { - struct file_info *first_re = NULL; - int nexted_re = 0; - - /* - * Find "RE" dir for the current file, which - * has "CL" flag. - */ - while ((re = re_get_entry(iso9660)) - != first_re) { - if (first_re == NULL) - first_re = re; - if (re->offset == file->cl_offset) { - re->parent->subdirs--; - re->parent = file->parent; - re->re = 0; - if (re->parent->re_descendant) { - nexted_re = 1; - re->re_descendant = 1; - if (rede_add_entry(re) < 0) - goto fatal_rr; - /* Move a list of descendants - * to a new ancestor. */ - while ((d = rede_get_entry( - re)) != NULL) - if (rede_add_entry(d) - < 0) - goto fatal_rr; - break; - } - /* Replace the current file - * with "RE" dir */ - *pfile = file = re; - /* Expose its descendant */ - while ((d = rede_get_entry( - file)) != NULL) - cache_add_entry( - iso9660, d); - break; - } else - re_add_entry(iso9660, re); - } - if (nexted_re) { - /* - * Do not expose this at this time - * because we have not gotten its full-path - * name yet. - */ - continue; - } - } else if ((file->mode & AE_IFMT) == AE_IFDIR) { - int r; - - /* Read file entries in this dir. */ - r = read_children(a, file); - if (r != ARCHIVE_OK) - return (r); - - /* - * Handle a special dir of Rockridge extensions, - * "rr_moved". - */ - if (file->rr_moved) { - /* - * If this has only the subdirectories which - * have "RE" flags, do not expose at this time. - */ - if (file->rr_moved_has_re_only) - continue; - /* Otherwise expose "rr_moved" entry. */ - } else if (file->re) { - /* - * Do not expose this at this time - * because we have not gotten its full-path - * name yet. - */ - re_add_entry(iso9660, file); - continue; - } else if (file->re_descendant) { - /* - * If the top level "RE" entry of this entry - * is not exposed, we, accordingly, should not - * expose this entry at this time because - * we cannot make its proper full-path name. - */ - if (rede_add_entry(file) == 0) - continue; - /* Otherwise we can expose this entry because - * it seems its top level "RE" has already been - * exposed. */ - } - } - break; - } - - if ((file->mode & AE_IFMT) != AE_IFREG || file->number == -1) - return (ARCHIVE_OK); - - count = 0; - number = file->number; - iso9660->cache_files.first = NULL; - iso9660->cache_files.last = &(iso9660->cache_files.first); - empty_files.first = NULL; - empty_files.last = &empty_files.first; - /* Collect files which has the same file serial number. - * Peek pending_files so that file which number is different - * is not put bak. */ - while (iso9660->pending_files.used > 0 && - (iso9660->pending_files.files[0]->number == -1 || - iso9660->pending_files.files[0]->number == number)) { - if (file->number == -1) { - /* This file has the same offset - * but it's wrong offset which empty files - * and symlink files have. - * NOTE: This wrong offse was recorded by - * old mkisofs utility. If ISO images is - * created by latest mkisofs, this does not - * happen. - */ - file->next = NULL; - *empty_files.last = file; - empty_files.last = &(file->next); - } else { - count++; - cache_add_entry(iso9660, file); - } - file = next_entry(iso9660); - } - - if (count == 0) { - *pfile = file; - return ((file == NULL)?ARCHIVE_EOF:ARCHIVE_OK); - } - if (file->number == -1) { - file->next = NULL; - *empty_files.last = file; - empty_files.last = &(file->next); - } else { - count++; - cache_add_entry(iso9660, file); - } - - if (count > 1) { - /* The count is the same as number of hardlink, - * so much so that each nlinks of files in cache_file - * is overwritten by value of the count. - */ - for (file = iso9660->cache_files.first; - file != NULL; file = file->next) - file->nlinks = count; - } - /* If there are empty files, that files are added - * to the tail of the cache_files. */ - if (empty_files.first != NULL) { - *iso9660->cache_files.last = empty_files.first; - iso9660->cache_files.last = empty_files.last; - } - *pfile = cache_get_entry(iso9660); - return ((*pfile == NULL)?ARCHIVE_EOF:ARCHIVE_OK); - -fatal_rr: - archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC, - "Failed to connect 'CL' pointer to 'RE' rr_moved pointer of" - "Rockridge extensions"); - return (ARCHIVE_FATAL); -} - -static inline void -re_add_entry(struct iso9660 *iso9660, struct file_info *file) -{ - file->re_next = NULL; - *iso9660->re_files.last = file; - iso9660->re_files.last = &(file->re_next); -} - -static inline struct file_info * -re_get_entry(struct iso9660 *iso9660) -{ - struct file_info *file; - - if ((file = iso9660->re_files.first) != NULL) { - iso9660->re_files.first = file->re_next; - if (iso9660->re_files.first == NULL) - iso9660->re_files.last = - &(iso9660->re_files.first); - } - return (file); -} - -static inline int -rede_add_entry(struct file_info *file) -{ - struct file_info *re; - - re = file->parent; - while (re != NULL && !re->re) - re = re->parent; - if (re == NULL) - return (-1); - - file->re_next = NULL; - *re->rede_files.last = file; - re->rede_files.last = &(file->re_next); - return (0); -} - -static inline struct file_info * -rede_get_entry(struct file_info *re) -{ - struct file_info *file; - - if ((file = re->rede_files.first) != NULL) { - re->rede_files.first = file->re_next; - if (re->rede_files.first == NULL) - re->rede_files.last = - &(re->rede_files.first); - } - return (file); -} - -static inline void -cache_add_entry(struct iso9660 *iso9660, struct file_info *file) -{ - file->next = NULL; - *iso9660->cache_files.last = file; - iso9660->cache_files.last = &(file->next); -} - -static inline struct file_info * -cache_get_entry(struct iso9660 *iso9660) -{ - struct file_info *file; - - if ((file = iso9660->cache_files.first) != NULL) { - iso9660->cache_files.first = file->next; - if (iso9660->cache_files.first == NULL) - iso9660->cache_files.last = &(iso9660->cache_files.first); - } - return (file); -} - -static void -heap_add_entry(struct heap_queue *heap, struct file_info *file, uint64_t key) -{ - uint64_t file_key, parent_key; - int hole, parent; - - /* Expand our pending files list as necessary. */ - if (heap->used >= heap->allocated) { - struct file_info **new_pending_files; - int new_size = heap->allocated * 2; - - if (heap->allocated < 1024) - new_size = 1024; - /* Overflow might keep us from growing the list. */ - if (new_size <= heap->allocated) - __archive_errx(1, "Out of memory"); - new_pending_files = (struct file_info **) - malloc(new_size * sizeof(new_pending_files[0])); - if (new_pending_files == NULL) - __archive_errx(1, "Out of memory"); - memcpy(new_pending_files, heap->files, - heap->allocated * sizeof(new_pending_files[0])); - if (heap->files != NULL) - free(heap->files); - heap->files = new_pending_files; - heap->allocated = new_size; - } - - file_key = file->key = key; - - /* - * Start with hole at end, walk it up tree to find insertion point. - */ - hole = heap->used++; - while (hole > 0) { - parent = (hole - 1)/2; - parent_key = heap->files[parent]->key; - if (file_key >= parent_key) { - heap->files[hole] = file; - return; - } - // Move parent into hole <==> move hole up tree. - heap->files[hole] = heap->files[parent]; - hole = parent; - } - heap->files[0] = file; -} - -static struct file_info * -heap_get_entry(struct heap_queue *heap) -{ - uint64_t a_key, b_key, c_key; - int a, b, c; - struct file_info *r, *tmp; - - if (heap->used < 1) - return (NULL); - - /* - * The first file in the list is the earliest; we'll return this. - */ - r = heap->files[0]; - - /* - * Move the last item in the heap to the root of the tree - */ - heap->files[0] = heap->files[--(heap->used)]; - - /* - * Rebalance the heap. - */ - a = 0; // Starting element and its heap key - a_key = heap->files[a]->key; - for (;;) { - b = a + a + 1; // First child - if (b >= heap->used) - return (r); - b_key = heap->files[b]->key; - c = b + 1; // Use second child if it is smaller. - if (c < heap->used) { - c_key = heap->files[c]->key; - if (c_key < b_key) { - b = c; - b_key = c_key; - } - } - if (a_key <= b_key) - return (r); - tmp = heap->files[a]; - heap->files[a] = heap->files[b]; - heap->files[b] = tmp; - a = b; - } -} - -static unsigned int -toi(const void *p, int n) -{ - const unsigned char *v = (const unsigned char *)p; - if (n > 1) - return v[0] + 256 * toi(v + 1, n - 1); - if (n == 1) - return v[0]; - return (0); -} - -static time_t -isodate7(const unsigned char *v) -{ - struct tm tm; - int offset; - memset(&tm, 0, sizeof(tm)); - tm.tm_year = v[0]; - tm.tm_mon = v[1] - 1; - tm.tm_mday = v[2]; - tm.tm_hour = v[3]; - tm.tm_min = v[4]; - tm.tm_sec = v[5]; - /* v[6] is the signed timezone offset, in 1/4-hour increments. */ - offset = ((const signed char *)v)[6]; - if (offset > -48 && offset < 52) { - tm.tm_hour -= offset / 4; - tm.tm_min -= (offset % 4) * 15; - } - return (time_from_tm(&tm)); -} - -static time_t -isodate17(const unsigned char *v) -{ - struct tm tm; - int offset; - memset(&tm, 0, sizeof(tm)); - tm.tm_year = (v[0] - '0') * 1000 + (v[1] - '0') * 100 - + (v[2] - '0') * 10 + (v[3] - '0') - - 1900; - tm.tm_mon = (v[4] - '0') * 10 + (v[5] - '0'); - tm.tm_mday = (v[6] - '0') * 10 + (v[7] - '0'); - tm.tm_hour = (v[8] - '0') * 10 + (v[9] - '0'); - tm.tm_min = (v[10] - '0') * 10 + (v[11] - '0'); - tm.tm_sec = (v[12] - '0') * 10 + (v[13] - '0'); - /* v[16] is the signed timezone offset, in 1/4-hour increments. */ - offset = ((const signed char *)v)[16]; - if (offset > -48 && offset < 52) { - tm.tm_hour -= offset / 4; - tm.tm_min -= (offset % 4) * 15; - } - return (time_from_tm(&tm)); -} - -static time_t -time_from_tm(struct tm *t) -{ -#if HAVE_TIMEGM - /* Use platform timegm() if available. */ - return (timegm(t)); -#else - /* Else use direct calculation using POSIX assumptions. */ - /* First, fix up tm_yday based on the year/month/day. */ - mktime(t); - /* Then we can compute timegm() from first principles. */ - return (t->tm_sec + t->tm_min * 60 + t->tm_hour * 3600 - + t->tm_yday * 86400 + (t->tm_year - 70) * 31536000 - + ((t->tm_year - 69) / 4) * 86400 - - ((t->tm_year - 1) / 100) * 86400 - + ((t->tm_year + 299) / 400) * 86400); -#endif -} - -static const char * -build_pathname(struct archive_string *as, struct file_info *file) -{ - if (file->parent != NULL && archive_strlen(&file->parent->name) > 0) { - build_pathname(as, file->parent); - archive_strcat(as, "/"); - } - if (archive_strlen(&file->name) == 0) - archive_strcat(as, "."); - else - archive_string_concat(as, &file->name); - return (as->s); -} - -#if DEBUG -static void -dump_isodirrec(FILE *out, const unsigned char *isodirrec) -{ - fprintf(out, " l %d,", - toi(isodirrec + DR_length_offset, DR_length_size)); - fprintf(out, " a %d,", - toi(isodirrec + DR_ext_attr_length_offset, DR_ext_attr_length_size)); - fprintf(out, " ext 0x%x,", - toi(isodirrec + DR_extent_offset, DR_extent_size)); - fprintf(out, " s %d,", - toi(isodirrec + DR_size_offset, DR_extent_size)); - fprintf(out, " f 0x%02x,", - toi(isodirrec + DR_flags_offset, DR_flags_size)); - fprintf(out, " u %d,", - toi(isodirrec + DR_file_unit_size_offset, DR_file_unit_size_size)); - fprintf(out, " ilv %d,", - toi(isodirrec + DR_interleave_offset, DR_interleave_size)); - fprintf(out, " seq %d,", - toi(isodirrec + DR_volume_sequence_number_offset, DR_volume_sequence_number_size)); - fprintf(out, " nl %d:", - toi(isodirrec + DR_name_len_offset, DR_name_len_size)); - fprintf(out, " `%.*s'", - toi(isodirrec + DR_name_len_offset, DR_name_len_size), isodirrec + DR_name_offset); -} -#endif |
