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/*
* Copyright (c) 2013 Stefan Bolte <portix@gmx.net>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
/*
* Pack/Unpack files/directories to dwb-extension archive. Only directories and
* regular files are supported. Unlike tar exar doesn't preserve symbolic links,
* instead a copy is packed into the archive and an extension archive doesn't
* preserve any ownership or permissions, so an extension archive cannot contain
* any executables.
*
* File format:
*
* [file header][file][file header][file][file he...
*
* file header : - file info 22 bytes
* - 7 bytes version header, null terminated (char)
* - 1 byte filetype flag (d|f) (char)
* - 14 byte file size, null terminated (char, hex)
* - file name, null terminated, maximum 4096 bytes
* file : saved as unsigned char
* */
#ifndef __EXAR_H__
#define __EXAR_H__
#include <sys/types.h>
enum {
EXAR_VERBOSE_L1 = 1<<0,
EXAR_VERBOSE_L2 = 1<<1,
EXAR_VERBOSE_L3 = 1<<2,
};
#define EXAR_VERBOSE_MASK (0x7)
/*
* Packs a file or directory
* @path: Path to the file or directory to pack
*
* @returns 0 on success and -1 on error
* */
int
exar_pack(const char *path);
/*
* Appends a file or directory to the archive
* @archive The archive
* @path The file or directory to append
*
* @returns 0 on success
*/
int
exar_append(const char *archive, const char *path);
/*
* Unpacks an archive
* @path: Path to the extension archive
* @dest: Destination directory or NULL for current directory
*
* @returns 0 on success and -1 on error
* */
int
exar_unpack(const char *path, const char *dest);
/*
* Extracts a file from an extension archive
* @archive The archive
* @file The path of the file in the archive
* @size Return location for the size, if an error occurs size will be set to -1
*
* @returns A newly allocated char buffer with the file content or NULL if an error
* occured or the file was not found in the archive
* */
unsigned char *
exar_extract(const char *archive, const char *file, off_t *size);
/*
* Searches for a file and extracts the content from the archive.
*
* @archive The archive
* @search The search term. The term is is compared with the end of each
* filename in the archive
* @size Return location for the size, if an error occurs size will be set to -1
*
* @returns A newly allocated char buffer with the file content or NULL if an error
* occured or the file was not found in the archive
* */
unsigned char *
exar_search_extract(const char *archive, const char *search, off_t *size);
/*
* Deletes a file from the archive, if it is a directory it is removed
* recursively.
*
* @archive The archive
* @file The file to delete
*
* @returns 0 on success and -1 on error
*/
int
exar_delete(const char *archive, const char *file);
/*
* Checks if the file is an archive file with compatible version number
*
* @archive The archive
* @verbose Whether to print error messages to stderr
*
* @returns 0 on success and -1 on error
*/
int
exar_check_version(const char *archive);
/*
* Print info about the archive to stdout.
*
* @archive The archive
* */
void
exar_info(const char *archive);
/*
* Set verbosity flags, exar will be most verbose if all flags are set, log
* messages are printed to stderr.
* @v_flags
*/
void
exar_verbose(unsigned char v_flags);
#endif
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