dc8cb157dd
This seems a better match for people's expectations.
1321 lines
40 KiB
C
1321 lines
40 KiB
C
/*-
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* Copyright (c) 2003-2007 Tim Kientzle
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR(S) ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "archive_platform.h"
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__FBSDID("$FreeBSD$");
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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/* #include <stdint.h> */ /* See archive_platform.h */
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#include <stdio.h>
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h>
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#endif
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#ifdef HAVE_STRING_H
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#include <string.h>
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#endif
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#include <time.h>
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#include "archive.h"
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#include "archive_entry.h"
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#include "archive_private.h"
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#include "archive_read_private.h"
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#include "archive_string.h"
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/*
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* An overview of ISO 9660 format:
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*
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* Each disk is laid out as follows:
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* * 32k reserved for private use
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* * Volume descriptor table. Each volume descriptor
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* is 2k and specifies basic format information.
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* The "Primary Volume Descriptor" (PVD) is defined by the
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* standard and should always be present; other volume
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* descriptors include various vendor-specific extensions.
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* * Files and directories. Each file/dir is specified by
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* an "extent" (starting sector and length in bytes).
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* Dirs are just files with directory records packed one
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* after another. The PVD contains a single dir entry
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* specifying the location of the root directory. Everything
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* else follows from there.
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*
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* This module works by first reading the volume descriptors, then
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* building a list of directory entries, sorted by starting
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* sector. At each step, I look for the earliest dir entry that
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* hasn't yet been read, seek forward to that location and read
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* that entry. If it's a dir, I slurp in the new dir entries and
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* add them to the heap; if it's a regular file, I return the
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* corresponding archive_entry and wait for the client to request
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* the file body. This strategy allows us to read most compliant
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* CDs with a single pass through the data, as required by libarchive.
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*/
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/* Structure of on-disk primary volume descriptor. */
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#define PVD_type_offset 0
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#define PVD_type_size 1
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#define PVD_id_offset (PVD_type_offset + PVD_type_size)
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#define PVD_id_size 5
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#define PVD_version_offset (PVD_id_offset + PVD_id_size)
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#define PVD_version_size 1
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#define PVD_reserved1_offset (PVD_version_offset + PVD_version_size)
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#define PVD_reserved1_size 1
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#define PVD_system_id_offset (PVD_reserved1_offset + PVD_reserved1_size)
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#define PVD_system_id_size 32
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#define PVD_volume_id_offset (PVD_system_id_offset + PVD_system_id_size)
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#define PVD_volume_id_size 32
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#define PVD_reserved2_offset (PVD_volume_id_offset + PVD_volume_id_size)
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#define PVD_reserved2_size 8
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#define PVD_volume_space_size_offset (PVD_reserved2_offset + PVD_reserved2_size)
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#define PVD_volume_space_size_size 8
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#define PVD_reserved3_offset (PVD_volume_space_size_offset + PVD_volume_space_size_size)
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#define PVD_reserved3_size 32
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#define PVD_volume_set_size_offset (PVD_reserved3_offset + PVD_reserved3_size)
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#define PVD_volume_set_size_size 4
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#define PVD_volume_sequence_number_offset (PVD_volume_set_size_offset + PVD_volume_set_size_size)
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#define PVD_volume_sequence_number_size 4
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#define PVD_logical_block_size_offset (PVD_volume_sequence_number_offset + PVD_volume_sequence_number_size)
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#define PVD_logical_block_size_size 4
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#define PVD_path_table_size_offset (PVD_logical_block_size_offset + PVD_logical_block_size_size)
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#define PVD_path_table_size_size 8
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#define PVD_type_1_path_table_offset (PVD_path_table_size_offset + PVD_path_table_size_size)
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#define PVD_type_1_path_table_size 4
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#define PVD_opt_type_1_path_table_offset (PVD_type_1_path_table_offset + PVD_type_1_path_table_size)
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#define PVD_opt_type_1_path_table_size 4
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#define PVD_type_m_path_table_offset (PVD_opt_type_1_path_table_offset + PVD_opt_type_1_path_table_size)
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#define PVD_type_m_path_table_size 4
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#define PVD_opt_type_m_path_table_offset (PVD_type_m_path_table_offset + PVD_type_m_path_table_size)
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#define PVD_opt_type_m_path_table_size 4
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#define PVD_root_directory_record_offset (PVD_opt_type_m_path_table_offset + PVD_opt_type_m_path_table_size)
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#define PVD_root_directory_record_size 34
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#define PVD_volume_set_id_offset (PVD_root_directory_record_offset + PVD_root_directory_record_size)
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#define PVD_volume_set_id_size 128
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#define PVD_publisher_id_offset (PVD_volume_set_id_offset + PVD_volume_set_id_size)
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#define PVD_publisher_id_size 128
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#define PVD_preparer_id_offset (PVD_publisher_id_offset + PVD_publisher_id_size)
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#define PVD_preparer_id_size 128
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#define PVD_application_id_offset (PVD_preparer_id_offset + PVD_preparer_id_size)
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#define PVD_application_id_size 128
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#define PVD_copyright_file_id_offset (PVD_application_id_offset + PVD_application_id_size)
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#define PVD_copyright_file_id_size 37
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#define PVD_abstract_file_id_offset (PVD_copyright_file_id_offset + PVD_copyright_file_id_size)
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#define PVD_abstract_file_id_size 37
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#define PVD_bibliographic_file_id_offset (PVD_abstract_file_id_offset + PVD_abstract_file_id_size)
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#define PVD_bibliographic_file_id_size 37
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#define PVD_creation_date_offset (PVD_bibliographic_file_id_offset + PVD_bibliographic_file_id_size)
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#define PVD_creation_date_size 17
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#define PVD_modification_date_offset (PVD_creation_date_offset + PVD_creation_date_size)
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#define PVD_modification_date_size 17
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#define PVD_expiration_date_offset (PVD_modification_date_offset + PVD_modification_date_size)
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#define PVD_expiration_date_size 17
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#define PVD_effective_date_offset (PVD_expiration_date_offset + PVD_expiration_date_size)
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#define PVD_effective_date_size 17
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#define PVD_file_structure_version_offset (PVD_effective_date_offset + PVD_effective_date_size)
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#define PVD_file_structure_version_size 1
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#define PVD_reserved4_offset (PVD_file_structure_version_offset + PVD_file_structure_version_size)
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#define PVD_reserved4_size 1
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#define PVD_application_data_offset (PVD_reserved4_offset + PVD_reserved4_size)
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#define PVD_application_data_size 512
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#define PVD_reserved5_offset (PVD_application_data_offset + PVD_application_data_size)
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#define PVD_reserved5_size (2048 - PVD_reserved5_offset)
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/* TODO: It would make future maintenance easier to just hardcode the
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* above values. In particular, ECMA119 states the offsets as part of
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* the standard. That would eliminate the need for the following check.*/
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#if PVD_reserved5_offset != 1395
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#error PVD offset and size definitions are wrong.
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#endif
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/* Structure of an on-disk directory record. */
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/* Note: ISO9660 stores each multi-byte integer twice, once in
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* each byte order. The sizes here are the size of just one
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* of the two integers. (This is why the offset of a field isn't
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* the same as the offset+size of the previous field.) */
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#define DR_length_offset 0
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#define DR_length_size 1
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#define DR_ext_attr_length_offset 1
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#define DR_ext_attr_length_size 1
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#define DR_extent_offset 2
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#define DR_extent_size 4
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#define DR_size_offset 10
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#define DR_size_size 4
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#define DR_date_offset 18
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#define DR_date_size 7
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#define DR_flags_offset 25
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#define DR_flags_size 1
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#define DR_file_unit_size_offset 26
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#define DR_file_unit_size_size 1
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#define DR_interleave_offset 27
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#define DR_interleave_size 1
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#define DR_volume_sequence_number_offset 28
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#define DR_volume_sequence_number_size 2
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#define DR_name_len_offset 32
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#define DR_name_len_size 1
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#define DR_name_offset 33
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/*
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* Our private data.
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*/
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/* In-memory storage for a directory record. */
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struct file_info {
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struct file_info *parent;
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int refcount;
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uint64_t offset; /* Offset on disk. */
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uint64_t size; /* File size in bytes. */
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uint64_t ce_offset; /* Offset of CE */
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uint64_t ce_size; /* Size of CE */
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time_t birthtime; /* File created time. */
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time_t mtime; /* File last modified time. */
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time_t atime; /* File last accessed time. */
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time_t ctime; /* File attribute change time. */
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uint64_t rdev; /* Device number */
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mode_t mode;
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uid_t uid;
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gid_t gid;
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ino_t inode;
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int nlinks;
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struct archive_string name; /* Pathname */
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char name_continues; /* Non-zero if name continues */
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struct archive_string symlink;
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char symlink_continues; /* Non-zero if link continues */
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};
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struct iso9660 {
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int magic;
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#define ISO9660_MAGIC 0x96609660
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struct archive_string pathname;
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char seenRockridge; /* Set true if RR extensions are used. */
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unsigned char suspOffset;
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uint64_t previous_offset;
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uint64_t previous_size;
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struct archive_string previous_pathname;
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/* TODO: Make this a heap for fast inserts and deletions. */
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struct file_info **pending_files;
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int pending_files_allocated;
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int pending_files_used;
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uint64_t current_position;
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ssize_t logical_block_size;
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uint64_t volume_size; /* Total size of volume in bytes. */
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off_t entry_sparse_offset;
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int64_t entry_bytes_remaining;
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};
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static void add_entry(struct iso9660 *iso9660, struct file_info *file);
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static int archive_read_format_iso9660_bid(struct archive_read *);
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static int archive_read_format_iso9660_cleanup(struct archive_read *);
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static int archive_read_format_iso9660_read_data(struct archive_read *,
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const void **, size_t *, off_t *);
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static int archive_read_format_iso9660_read_data_skip(struct archive_read *);
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static int archive_read_format_iso9660_read_header(struct archive_read *,
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struct archive_entry *);
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static const char *build_pathname(struct archive_string *, struct file_info *);
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#if DEBUG
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static void dump_isodirrec(FILE *, const unsigned char *isodirrec);
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#endif
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static time_t time_from_tm(struct tm *);
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static time_t isodate17(const unsigned char *);
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static time_t isodate7(const unsigned char *);
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static int isPVD(struct iso9660 *, const unsigned char *);
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static struct file_info *next_entry(struct iso9660 *);
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static int next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
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struct file_info **pfile);
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static struct file_info *
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parse_file_info(struct iso9660 *iso9660,
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struct file_info *parent, const unsigned char *isodirrec);
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static void parse_rockridge(struct iso9660 *iso9660,
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struct file_info *file, const unsigned char *start,
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const unsigned char *end);
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static void parse_rockridge_NM1(struct file_info *,
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const unsigned char *, int);
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static void parse_rockridge_SL1(struct file_info *,
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const unsigned char *, int);
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static void parse_rockridge_TF1(struct file_info *,
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const unsigned char *, int);
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static void release_file(struct iso9660 *, struct file_info *);
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static unsigned toi(const void *p, int n);
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int
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archive_read_support_format_iso9660(struct archive *_a)
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{
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struct archive_read *a = (struct archive_read *)_a;
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struct iso9660 *iso9660;
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int r;
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iso9660 = (struct iso9660 *)malloc(sizeof(*iso9660));
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if (iso9660 == NULL) {
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archive_set_error(&a->archive, ENOMEM, "Can't allocate iso9660 data");
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return (ARCHIVE_FATAL);
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}
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memset(iso9660, 0, sizeof(*iso9660));
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iso9660->magic = ISO9660_MAGIC;
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r = __archive_read_register_format(a,
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iso9660,
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archive_read_format_iso9660_bid,
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archive_read_format_iso9660_read_header,
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archive_read_format_iso9660_read_data,
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archive_read_format_iso9660_read_data_skip,
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archive_read_format_iso9660_cleanup);
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if (r != ARCHIVE_OK) {
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free(iso9660);
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return (r);
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}
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return (ARCHIVE_OK);
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}
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static int
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archive_read_format_iso9660_bid(struct archive_read *a)
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{
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struct iso9660 *iso9660;
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ssize_t bytes_read;
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const void *h;
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const unsigned char *p;
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int bid;
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iso9660 = (struct iso9660 *)(a->format->data);
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/*
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* Skip the first 32k (reserved area) and get the first
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* 8 sectors of the volume descriptor table. Of course,
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* if the I/O layer gives us more, we'll take it.
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*/
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h = __archive_read_ahead(a, 32768 + 8*2048, &bytes_read);
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if (h == NULL)
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return (-1);
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p = (const unsigned char *)h;
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/* Skip the reserved area. */
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bytes_read -= 32768;
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p += 32768;
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/* Check each volume descriptor to locate the PVD. */
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for (; bytes_read > 2048; bytes_read -= 2048, p += 2048) {
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bid = isPVD(iso9660, p);
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if (bid > 0)
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return (bid);
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if (*p == '\177') /* End-of-volume-descriptor marker. */
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break;
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}
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/* We didn't find a valid PVD; return a bid of zero. */
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return (0);
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}
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static int
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isPVD(struct iso9660 *iso9660, const unsigned char *h)
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{
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struct file_info *file;
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int i;
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/* Type of the Primary Volume Descriptor must be 1. */
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if (h[PVD_type_offset] != 1)
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return (0);
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/* ID must be "CD001" */
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if (memcmp(h + PVD_id_offset, "CD001", 5) != 0)
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return (0);
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/* PVD version must be 1. */
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if (h[PVD_version_offset] != 1)
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return (0);
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/* Reserved field must be 0. */
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if (h[PVD_reserved1_offset] != 0)
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return (0);
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/* Reserved field must be 0. */
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for (i = 0; i < PVD_reserved2_size; ++i)
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if (h[PVD_reserved2_offset + i] != 0)
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return (0);
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/* Reserved field must be 0. */
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for (i = 0; i < PVD_reserved3_size; ++i)
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if (h[PVD_reserved3_offset + i] != 0)
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return (0);
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/* Logical block size must be > 0. */
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/* I've looked at Ecma 119 and can't find any stronger
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* restriction on this field. */
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iso9660->logical_block_size = toi(h + PVD_logical_block_size_offset, 2);
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if (iso9660->logical_block_size <= 0)
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return (0);
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iso9660->volume_size = iso9660->logical_block_size
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* (uint64_t)toi(h + PVD_volume_space_size_offset, 4);
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/* File structure version must be 1 for ISO9660/ECMA119. */
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if (h[PVD_file_structure_version_offset] != 1)
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return (0);
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/* Reserved field must be 0. */
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for (i = 0; i < PVD_reserved4_size; ++i)
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if (h[PVD_reserved4_offset + i] != 0)
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return (0);
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/* Reserved field must be 0. */
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for (i = 0; i < PVD_reserved5_size; ++i)
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if (h[PVD_reserved5_offset + i] != 0)
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return (0);
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/* XXX TODO: Check other values for sanity; reject more
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* malformed PVDs. XXX */
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/* Store the root directory in the pending list. */
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file = parse_file_info(iso9660, NULL, h + PVD_root_directory_record_offset);
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add_entry(iso9660, file);
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return (48);
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}
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static int
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archive_read_format_iso9660_read_header(struct archive_read *a,
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struct archive_entry *entry)
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{
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struct iso9660 *iso9660;
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struct file_info *file;
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int r;
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iso9660 = (struct iso9660 *)(a->format->data);
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if (!a->archive.archive_format) {
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a->archive.archive_format = ARCHIVE_FORMAT_ISO9660;
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a->archive.archive_format_name = "ISO9660";
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}
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/* Get the next entry that appears after the current offset. */
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r = next_entry_seek(a, iso9660, &file);
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if (r != ARCHIVE_OK)
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return (r);
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iso9660->entry_bytes_remaining = file->size;
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iso9660->entry_sparse_offset = 0; /* Offset for sparse-file-aware clients. */
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if (file->offset + file->size > iso9660->volume_size) {
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archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
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"File is beyond end-of-media: %s", file->name);
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iso9660->entry_bytes_remaining = 0;
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iso9660->entry_sparse_offset = 0;
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release_file(iso9660, file);
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return (ARCHIVE_WARN);
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}
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/* 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);
|
|
archive_entry_set_ino(entry, file->inode);
|
|
archive_entry_set_birthtime(entry, file->birthtime, 0);
|
|
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);
|
|
|
|
/* If this entry points to the same data as the previous
|
|
* entry, convert this into a hardlink to that entry.
|
|
* But don't bother for zero-length files. */
|
|
if (file->offset == iso9660->previous_offset
|
|
&& file->size == iso9660->previous_size
|
|
&& file->size > 0) {
|
|
archive_entry_set_hardlink(entry,
|
|
iso9660->previous_pathname.s);
|
|
iso9660->entry_bytes_remaining = 0;
|
|
iso9660->entry_sparse_offset = 0;
|
|
release_file(iso9660, file);
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
/* If the offset is before our current position, we can't
|
|
* seek backwards to extract it, so issue a warning. */
|
|
if (file->offset < iso9660->current_position) {
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
|
|
"Ignoring out-of-order file");
|
|
iso9660->entry_bytes_remaining = 0;
|
|
iso9660->entry_sparse_offset = 0;
|
|
release_file(iso9660, file);
|
|
return (ARCHIVE_WARN);
|
|
}
|
|
|
|
iso9660->previous_size = file->size;
|
|
iso9660->previous_offset = file->offset;
|
|
archive_strcpy(&iso9660->previous_pathname, iso9660->pathname.s);
|
|
|
|
/* If this is a directory, read in all of the entries right now. */
|
|
if (archive_entry_filetype(entry) == AE_IFDIR) {
|
|
while (iso9660->entry_bytes_remaining > 0) {
|
|
const void *block;
|
|
const unsigned char *p;
|
|
ssize_t step = iso9660->logical_block_size;
|
|
if (step > iso9660->entry_bytes_remaining)
|
|
step = iso9660->entry_bytes_remaining;
|
|
block = __archive_read_ahead(a, step, NULL);
|
|
if (block == NULL) {
|
|
archive_set_error(&a->archive, ARCHIVE_ERRNO_MISC,
|
|
"Failed to read full block when scanning ISO9660 directory list");
|
|
release_file(iso9660, file);
|
|
return (ARCHIVE_FATAL);
|
|
}
|
|
__archive_read_consume(a, step);
|
|
iso9660->current_position += step;
|
|
iso9660->entry_bytes_remaining -= step;
|
|
for (p = (const unsigned char *)block;
|
|
*p != 0 && p < (const unsigned char *)block + step;
|
|
p += *p) {
|
|
struct file_info *child;
|
|
|
|
/* 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(iso9660, file, p);
|
|
add_entry(iso9660, child);
|
|
if (iso9660->seenRockridge) {
|
|
a->archive.archive_format =
|
|
ARCHIVE_FORMAT_ISO9660_ROCKRIDGE;
|
|
a->archive.archive_format_name =
|
|
"ISO9660 with Rockridge extensions";
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
release_file(iso9660, file);
|
|
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);
|
|
}
|
|
|
|
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) {
|
|
*buff = NULL;
|
|
*size = 0;
|
|
*offset = iso9660->entry_sparse_offset;
|
|
return (ARCHIVE_EOF);
|
|
}
|
|
|
|
*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;
|
|
struct file_info *file;
|
|
|
|
iso9660 = (struct iso9660 *)(a->format->data);
|
|
while ((file = next_entry(iso9660)) != NULL)
|
|
release_file(iso9660, file);
|
|
archive_string_free(&iso9660->pathname);
|
|
archive_string_free(&iso9660->previous_pathname);
|
|
if (iso9660->pending_files)
|
|
free(iso9660->pending_files);
|
|
free(iso9660);
|
|
(a->format->data) = NULL;
|
|
return (ARCHIVE_OK);
|
|
}
|
|
|
|
/*
|
|
* 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 iso9660 *iso9660, struct file_info *parent,
|
|
const unsigned char *isodirrec)
|
|
{
|
|
struct file_info *file;
|
|
size_t name_len;
|
|
const unsigned char *rr_start, *rr_end;
|
|
const char *p;
|
|
int flags;
|
|
|
|
/* TODO: Sanity check that name_len doesn't exceed length, etc. */
|
|
|
|
/* Create a new file entry and copy data from the ISO dir record. */
|
|
file = (struct file_info *)malloc(sizeof(*file));
|
|
if (file == NULL)
|
|
return (NULL);
|
|
memset(file, 0, sizeof(*file));
|
|
file->parent = parent;
|
|
if (parent != NULL)
|
|
parent->refcount++;
|
|
file->offset = toi(isodirrec + DR_extent_offset, DR_extent_size)
|
|
* iso9660->logical_block_size;
|
|
file->size = toi(isodirrec + DR_size_offset, DR_size_size);
|
|
file->mtime = isodate7(isodirrec + DR_date_offset);
|
|
file->ctime = file->atime = file->mtime;
|
|
|
|
name_len = (size_t)*(const unsigned char *)(isodirrec + DR_name_len_offset);
|
|
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) + iso9660->suspOffset;
|
|
rr_end = (const unsigned char *)isodirrec
|
|
+ *(isodirrec + DR_length_offset);
|
|
|
|
/* Chop off trailing ';1' from files. */
|
|
if (name_len > 2 && p[name_len - 1] == '1' && p[name_len - 2] == ';')
|
|
name_len -= 2;
|
|
/* Chop off trailing '.' from filenames. */
|
|
if (name_len > 1 && p[name_len - 1] == '.')
|
|
--name_len;
|
|
archive_strncpy(&file->name, p, name_len);
|
|
|
|
flags = *(isodirrec + DR_flags_offset);
|
|
if (flags & 0x02)
|
|
file->mode = AE_IFDIR | 0700;
|
|
else
|
|
file->mode = AE_IFREG | 0400;
|
|
|
|
/* Rockridge extensions overwrite information from above. */
|
|
parse_rockridge(iso9660, file, rr_start, rr_end);
|
|
|
|
#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
|
|
return (file);
|
|
}
|
|
|
|
static void
|
|
add_entry(struct iso9660 *iso9660, struct file_info *file)
|
|
{
|
|
/* Expand our pending files list as necessary. */
|
|
if (iso9660->pending_files_used >= iso9660->pending_files_allocated) {
|
|
struct file_info **new_pending_files;
|
|
int new_size = iso9660->pending_files_allocated * 2;
|
|
|
|
if (iso9660->pending_files_allocated < 1024)
|
|
new_size = 1024;
|
|
/* Overflow might keep us from growing the list. */
|
|
if (new_size <= iso9660->pending_files_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, iso9660->pending_files,
|
|
iso9660->pending_files_allocated * sizeof(new_pending_files[0]));
|
|
if (iso9660->pending_files != NULL)
|
|
free(iso9660->pending_files);
|
|
iso9660->pending_files = new_pending_files;
|
|
iso9660->pending_files_allocated = new_size;
|
|
}
|
|
|
|
iso9660->pending_files[iso9660->pending_files_used++] = file;
|
|
}
|
|
|
|
static void
|
|
parse_rockridge(struct iso9660 *iso9660, struct file_info *file,
|
|
const unsigned char *p, const unsigned char *end)
|
|
{
|
|
(void)iso9660; /* UNUSED */
|
|
file->name_continues = 0;
|
|
file->symlink_continues = 0;
|
|
|
|
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
|
|
*/
|
|
file->ce_offset = (uint64_t)toi(data, 4)
|
|
* iso9660->logical_block_size
|
|
+ toi(data + 8, 4);
|
|
file->ce_size = toi(data + 16, 4);
|
|
/* If the result is rediculous,
|
|
* ignore it. */
|
|
if (file->ce_offset + file->ce_size
|
|
> iso9660->volume_size) {
|
|
file->ce_offset = 0;
|
|
file->ce_size = 0;
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case 'N':
|
|
if (p[0] == 'N' && p[1] == 'M') {
|
|
if (version == 1)
|
|
parse_rockridge_NM1(file,
|
|
data, data_length);
|
|
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);
|
|
}
|
|
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->inode
|
|
= toi(data + 32, 4);
|
|
}
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case 'R':
|
|
if (p[0] == 'R' && p[1] == 'R' && version == 1) {
|
|
iso9660->seenRockridge = 1;
|
|
/*
|
|
* RR extension comprises:
|
|
* one byte flag value
|
|
*/
|
|
/* TODO: Handle RR extension. */
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
case 'S':
|
|
if (p[0] == 'S' && p[1] == 'L') {
|
|
if (version == 1)
|
|
parse_rockridge_SL1(file,
|
|
data, data_length);
|
|
break;
|
|
}
|
|
if (p[0] == 'S' && p[1] == 'P'
|
|
&& version == 1 && data_length == 3
|
|
&& data[0] == (unsigned char)'\xbe'
|
|
&& data[1] == (unsigned char)'\xef') {
|
|
/*
|
|
* 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.
|
|
*
|
|
* TODO: Add a check for 'SP' in
|
|
* first directory entry, disable all SUSP
|
|
* processing if not found.
|
|
*/
|
|
iso9660->suspOffset = data[2];
|
|
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.
|
|
*/
|
|
return;
|
|
}
|
|
case 'T':
|
|
if (p[0] == 'T' && p[1] == 'F') {
|
|
if (version == 1)
|
|
parse_rockridge_TF1(file,
|
|
data, data_length);
|
|
break;
|
|
}
|
|
/* FALLTHROUGH */
|
|
default:
|
|
/* The FALLTHROUGHs above leave us here for
|
|
* any unsupported extension. */
|
|
#if DEBUG
|
|
{
|
|
const unsigned char *t;
|
|
fprintf(stderr, "\nUnsupported RRIP extension for %s\n", file->name.s);
|
|
fprintf(stderr, " %c%c(%d):", p[0], p[1], data_length);
|
|
for (t = data; t < data + data_length && t < data + 16; t++)
|
|
fprintf(stderr, " %02x", *t);
|
|
fprintf(stderr, "\n");
|
|
}
|
|
#endif
|
|
break;
|
|
}
|
|
|
|
|
|
|
|
p += p[2];
|
|
}
|
|
}
|
|
|
|
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, data + 1, data_length - 1);
|
|
break;
|
|
case 1:
|
|
if (data_length < 2)
|
|
return;
|
|
archive_strncat(&file->name, 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 = 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);
|
|
data += 17;
|
|
data_length -= 17;
|
|
}
|
|
} else {
|
|
/* Use 7-byte time format. */
|
|
if ((flag & 1) && data_length >= 7) {
|
|
/* Create time. */
|
|
file->birthtime = isodate17(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);
|
|
data += 7;
|
|
data_length -= 7;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
parse_rockridge_SL1(struct file_info *file, const unsigned char *data,
|
|
int data_length)
|
|
{
|
|
int component_continues = 1;
|
|
|
|
if (!file->symlink_continues)
|
|
archive_string_empty(&file->symlink);
|
|
else
|
|
archive_strcat(&file->symlink, "/");
|
|
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;
|
|
|
|
if (!component_continues)
|
|
archive_strcat(&file->symlink, "/");
|
|
component_continues = 0;
|
|
|
|
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);
|
|
component_continues = 1;
|
|
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_string_empty(&file->symlink);
|
|
archive_strcat(&file->symlink, "/");
|
|
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
|
|
release_file(struct iso9660 *iso9660, struct file_info *file)
|
|
{
|
|
struct file_info *parent;
|
|
|
|
if (file->refcount == 0) {
|
|
parent = file->parent;
|
|
archive_string_free(&file->name);
|
|
archive_string_free(&file->symlink);
|
|
free(file);
|
|
if (parent != NULL) {
|
|
parent->refcount--;
|
|
release_file(iso9660, parent);
|
|
}
|
|
}
|
|
}
|
|
|
|
static int
|
|
next_entry_seek(struct archive_read *a, struct iso9660 *iso9660,
|
|
struct file_info **pfile)
|
|
{
|
|
struct file_info *file;
|
|
uint64_t offset;
|
|
|
|
*pfile = NULL;
|
|
for (;;) {
|
|
*pfile = file = next_entry(iso9660);
|
|
if (file == NULL)
|
|
return (ARCHIVE_EOF);
|
|
|
|
/* CE area precedes actual file data? Ignore it. */
|
|
if (file->ce_offset > file->offset) {
|
|
/* fprintf(stderr, " *** Discarding CE data.\n"); */
|
|
file->ce_offset = 0;
|
|
file->ce_size = 0;
|
|
}
|
|
|
|
/* Don't waste time seeking for zero-length bodies. */
|
|
if (file->size == 0) {
|
|
file->offset = iso9660->current_position;
|
|
}
|
|
|
|
/* If CE exists, find and read it now. */
|
|
if (file->ce_offset > 0)
|
|
offset = file->ce_offset;
|
|
else
|
|
offset = file->offset;
|
|
|
|
/* Seek forward to the start of the entry. */
|
|
if (iso9660->current_position < offset) {
|
|
off_t step = offset - iso9660->current_position;
|
|
off_t bytes_read;
|
|
bytes_read = __archive_read_skip(a, step);
|
|
if (bytes_read < 0)
|
|
return (bytes_read);
|
|
iso9660->current_position = offset;
|
|
}
|
|
|
|
/* We found body of file; handle it now. */
|
|
if (offset == file->offset)
|
|
return (ARCHIVE_OK);
|
|
|
|
/* Found CE? Process it and push the file back onto list. */
|
|
if (offset == file->ce_offset) {
|
|
const void *p;
|
|
ssize_t size = file->ce_size;
|
|
const unsigned char *rr_start;
|
|
|
|
file->ce_offset = 0;
|
|
file->ce_size = 0;
|
|
p = __archive_read_ahead(a, size, NULL);
|
|
if (p == NULL)
|
|
return (ARCHIVE_FATAL);
|
|
rr_start = (const unsigned char *)p;
|
|
parse_rockridge(iso9660, file, rr_start,
|
|
rr_start + size);
|
|
__archive_read_consume(a, size);
|
|
iso9660->current_position += size;
|
|
add_entry(iso9660, file);
|
|
}
|
|
}
|
|
}
|
|
|
|
static struct file_info *
|
|
next_entry(struct iso9660 *iso9660)
|
|
{
|
|
int least_index;
|
|
uint64_t least_end_offset;
|
|
int i;
|
|
struct file_info *r;
|
|
|
|
if (iso9660->pending_files_used < 1)
|
|
return (NULL);
|
|
|
|
/* Assume the first file in the list is the earliest on disk. */
|
|
least_index = 0;
|
|
least_end_offset = iso9660->pending_files[0]->offset
|
|
+ iso9660->pending_files[0]->size;
|
|
|
|
/* Now, try to find an earlier one. */
|
|
for (i = 0; i < iso9660->pending_files_used; i++) {
|
|
/* Use the position of the file *end* as our comparison. */
|
|
uint64_t end_offset = iso9660->pending_files[i]->offset
|
|
+ iso9660->pending_files[i]->size;
|
|
if (iso9660->pending_files[i]->ce_offset > 0
|
|
&& iso9660->pending_files[i]->ce_offset < iso9660->pending_files[i]->offset)
|
|
end_offset = iso9660->pending_files[i]->ce_offset
|
|
+ iso9660->pending_files[i]->ce_size;
|
|
if (least_end_offset > end_offset) {
|
|
least_index = i;
|
|
least_end_offset = end_offset;
|
|
}
|
|
}
|
|
r = iso9660->pending_files[least_index];
|
|
iso9660->pending_files[least_index]
|
|
= iso9660->pending_files[--iso9660->pending_files_used];
|
|
return (r);
|
|
}
|
|
|
|
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
|