/*
 * Amanda, The Advanced Maryland Automatic Network Disk Archiver
 * Copyright (c) 1991-1999 University of Maryland at College Park
 * Copyright (c) 2007-2012 Zmanda, Inc.  All Rights Reserved.
 * Copyright (c) 2013-2016 Carbonite, Inc.  All Rights Reserved.
 * All Rights Reserved.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of U.M. not be used in advertising or
 * publicity pertaining to distribution of the software without specific,
 * written prior permission.  U.M. makes no representations about the
 * suitability of this software for any purpose.  It is provided "as is"
 * without express or implied warranty.
 *
 * U.M. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL U.M.
 * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Authors: the Amanda Development Team.  Its members are listed in a
 * file named AUTHORS, in the root directory of this distribution.
 */
/*
 * $Id: fileheader.h,v 1.16 2006/05/25 01:47:12 johnfranks Exp $
 *
 */

#ifndef FILEHEADER_H
#define FILEHEADER_H

#include <glib.h>
#include <stdio.h>
#include "amutil.h"

#define STRMAX		256

typedef char string_t[STRMAX];
typedef enum {
    F_UNKNOWN = 0, F_WEIRD = -1, F_TAPESTART = 1, F_TAPEEND = 2,
    F_DUMPFILE = 3, F_CONT_DUMPFILE = 4, F_SPLIT_DUMPFILE = 5, F_NOOP = 6,
    F_EMPTY = -2
} filetype_t;

typedef struct file_s {
    filetype_t type;
    string_t datestamp;
    int dumplevel;
    int compressed;
    int encrypted;
    string_t comp_suffix;
    string_t encrypt_suffix;
    string_t name;	/* hostname or label */
    string_t disk;
    string_t program;
    string_t application;
    string_t srvcompprog;
    string_t clntcompprog;
    string_t srv_encrypt;
    string_t clnt_encrypt;
    string_t recover_cmd;
    string_t uncompress_cmd;
    string_t decrypt_cmd;
    string_t srv_decrypt_opt;
    string_t clnt_decrypt_opt;
    string_t cont_filename;
    char     *dle_str;
    int is_partial;
    int partnum;
    int totalparts; /* -1 == UNKNOWN */
    size_t blocksize;
    off_t  orig_size;
    crc_t  native_crc;
    crc_t  client_crc;
    crc_t  server_crc;
} dumpfile_t;

/* local functions */

/* Makes a serialized header from the dumpfile_t representation. The
 * return value is allocated using malloc(), so you must free it.
 *
 * Build_header returns NULL if the resulting header would be larger
 * than max_size bytes.  If size is not NULL, then the resulting header
 * will be *at least* this many bytes.  If size is NULL, then the
 * header will be exactly max_size bytes.  Zero bytes are used to pad the
 * header to the required length.
 *
 * If size is not NULL, *size is set to the actual size of the generated header.
 */
char *  build_header        (const dumpfile_t *file, size_t *size, size_t max_size);

void	fh_init(dumpfile_t *file);
void	parse_file_header(const char *buffer, dumpfile_t *file, size_t buflen);
void	print_header(FILE *outf, const dumpfile_t *file);
char   *summarize_header(const dumpfile_t *file);
int	known_compress_type(const dumpfile_t *file);
void	dump_dumpfile_t(const dumpfile_t *file);

/* Returns TRUE if the two headers are equal, FALSE otherwise. */
gboolean headers_are_equal(dumpfile_t * a, dumpfile_t * b);

/* Returns an allocated duplicate header. */
dumpfile_t * dumpfile_copy(dumpfile_t* from);
void dumpfile_copy_in_place(dumpfile_t *dest, dumpfile_t* source);

/* Frees associated storage */
void dumpfile_free_data(dumpfile_t* info);

/* Frees the header and associated storage */
void dumpfile_free(dumpfile_t* info);

#endif /* !FILEHEADER_H */