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/*-
* Copyright (c) 2003-2007 Tim Kientzle
* 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.
*
* $FreeBSD: head/lib/libarchive/archive_private.h 201098 2009-12-28 02:58:14Z kientzle $
*/
#ifndef ARCHIVE_PRIVATE_H_INCLUDED
#define ARCHIVE_PRIVATE_H_INCLUDED
#ifndef __LIBARCHIVE_BUILD
#error This header is only to be used internally to libarchive.
#endif
#if HAVE_ICONV_H
#include <iconv.h>
#endif
#include "archive.h"
#include "archive_string.h"
#if defined(__GNUC__) && (__GNUC__ > 2 || \
(__GNUC__ == 2 && __GNUC_MINOR__ >= 5))
#define __LA_DEAD __attribute__((__noreturn__))
#else
#define __LA_DEAD
#endif
#if defined(__GNUC__) && (__GNUC__ > 2 || \
(__GNUC__ == 2 && __GNUC_MINOR__ >= 7))
#define __LA_UNUSED __attribute__((__unused__))
#else
#define __LA_UNUSED
#endif
#define ARCHIVE_WRITE_MAGIC (0xb0c5c0deU)
#define ARCHIVE_READ_MAGIC (0xdeb0c5U)
#define ARCHIVE_WRITE_DISK_MAGIC (0xc001b0c5U)
#define ARCHIVE_READ_DISK_MAGIC (0xbadb0c5U)
#define ARCHIVE_MATCH_MAGIC (0xcad11c9U)
#define ARCHIVE_STATE_NEW 1U
#define ARCHIVE_STATE_HEADER 2U
#define ARCHIVE_STATE_DATA 4U
#define ARCHIVE_STATE_EOF 0x10U
#define ARCHIVE_STATE_CLOSED 0x20U
#define ARCHIVE_STATE_FATAL 0x8000U
#define ARCHIVE_STATE_ANY (0xFFFFU & ~ARCHIVE_STATE_FATAL)
struct archive_vtable {
int (*archive_close)(struct archive *);
int (*archive_free)(struct archive *);
int (*archive_write_header)(struct archive *,
struct archive_entry *);
int (*archive_write_finish_entry)(struct archive *);
ssize_t (*archive_write_data)(struct archive *,
const void *, size_t);
ssize_t (*archive_write_data_block)(struct archive *,
const void *, size_t, int64_t);
int (*archive_read_next_header)(struct archive *,
struct archive_entry **);
int (*archive_read_next_header2)(struct archive *,
struct archive_entry *);
int (*archive_read_data_block)(struct archive *,
const void **, size_t *, int64_t *);
int (*archive_filter_count)(struct archive *);
int64_t (*archive_filter_bytes)(struct archive *, int);
int (*archive_filter_code)(struct archive *, int);
const char * (*archive_filter_name)(struct archive *, int);
};
struct archive_string_conv;
struct archive {
/*
* The magic/state values are used to sanity-check the
* client's usage. If an API function is called at a
* ridiculous time, or the client passes us an invalid
* pointer, these values allow me to catch that.
*/
unsigned int magic;
unsigned int state;
/*
* Some public API functions depend on the "real" type of the
* archive object.
*/
const struct archive_vtable *vtable;
int archive_format;
const char *archive_format_name;
/* Number of file entries processed. */
int file_count;
int archive_error_number;
const char *error;
struct archive_string error_string;
char *current_code;
unsigned current_codepage; /* Current ACP(ANSI CodePage). */
unsigned current_oemcp; /* Current OEMCP(OEM CodePage). */
struct archive_string_conv *sconv;
/*
* Used by archive_read_data() to track blocks and copy
* data to client buffers, filling gaps with zero bytes.
*/
const char *read_data_block;
int64_t read_data_offset;
int64_t read_data_output_offset;
size_t read_data_remaining;
/*
* Used by formats/filters to determine the amount of data
* requested from a call to archive_read_data(). This is only
* useful when the format/filter has seek support.
*/
char read_data_is_posix_read;
size_t read_data_requested;
};
/* Check magic value and state; return(ARCHIVE_FATAL) if it isn't valid. */
int __archive_check_magic(struct archive *, unsigned int magic,
unsigned int state, const char *func);
#define archive_check_magic(a, expected_magic, allowed_states, function_name) \
do { \
int magic_test = __archive_check_magic((a), (expected_magic), \
(allowed_states), (function_name)); \
if (magic_test == ARCHIVE_FATAL) \
return ARCHIVE_FATAL; \
} while (0)
void __archive_errx(int retvalue, const char *msg) __LA_DEAD;
void __archive_ensure_cloexec_flag(int fd);
int __archive_mktemp(const char *tmpdir);
#if defined(_WIN32) && !defined(__CYGWIN__)
int __archive_mkstemp(wchar_t *template);
#else
int __archive_mkstemp(char *template);
#endif
int __archive_clean(struct archive *);
void __archive_reset_read_data(struct archive *);
#define err_combine(a,b) ((a) < (b) ? (a) : (b))
#if defined(__BORLANDC__) || (defined(_MSC_VER) && _MSC_VER <= 1300)
# define ARCHIVE_LITERAL_LL(x) x##i64
# define ARCHIVE_LITERAL_ULL(x) x##ui64
#else
# define ARCHIVE_LITERAL_LL(x) x##ll
# define ARCHIVE_LITERAL_ULL(x) x##ull
#endif
#endif
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