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/*
* Copyright (c) 2017 rxi
* Copyright (c) 2021 Aidan MacDonald
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to
* deal in the Software without restriction, including without limitation the
* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
* sell copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*/
#ifndef MICROTAR_H
#define MICROTAR_H
#ifdef __cplusplus
extern "C" {
#endif
#include <stdio.h>
#include <stdlib.h>
enum {
MTAR_ESUCCESS = 0,
MTAR_EFAILURE = -1,
MTAR_EOPENFAIL = -2,
MTAR_EREADFAIL = -3,
MTAR_EWRITEFAIL = -4,
MTAR_ESEEKFAIL = -5,
MTAR_EBADCHKSUM = -6,
MTAR_ENULLRECORD = -7,
MTAR_ENOTFOUND = -8,
MTAR_EOVERFLOW = -9,
};
enum {
MTAR_TREG = '0',
MTAR_TLNK = '1',
MTAR_TSYM = '2',
MTAR_TCHR = '3',
MTAR_TBLK = '4',
MTAR_TDIR = '5',
MTAR_TFIFO = '6',
};
typedef struct mtar_header mtar_header_t;
typedef struct mtar_raw_header mtar_raw_header_t;
typedef struct mtar mtar_t;
struct mtar_header {
unsigned mode;
unsigned owner;
unsigned group;
unsigned size;
unsigned mtime;
unsigned type;
char name[101]; /* +1 byte in order to ensure null termination */
char linkname[101];
};
struct mtar_raw_header {
char name[100];
char mode[8];
char owner[8];
char group[8];
char size[12];
char mtime[12];
char checksum[8];
char type;
char linkname[100];
char _padding[255];
};
struct mtar {
int (*read)(mtar_t* tar, void* data, unsigned size);
int (*write)(mtar_t* tar, const void* data, unsigned size);
int (*seek)(mtar_t* tar, unsigned pos);
int (*close)(mtar_t* tar);
void* stream;
unsigned pos;
unsigned remaining_data;
unsigned last_header;
mtar_header_t header;
mtar_raw_header_t raw_header;
};
const char* mtar_strerror(int err);
int mtar_open(mtar_t* tar, const char* filename, const char* mode);
int mtar_close(mtar_t* tar);
int mtar_seek(mtar_t* tar, unsigned pos);
int mtar_rewind(mtar_t* tar);
int mtar_next(mtar_t* tar);
int mtar_find(mtar_t* tar, const char* name, mtar_header_t* h);
int mtar_read_header(mtar_t* tar, mtar_header_t* h);
int mtar_read_data(mtar_t* tar, void* ptr, unsigned size);
int mtar_write_header(mtar_t* tar, const mtar_header_t* h);
int mtar_write_file_header(mtar_t* tar, const char* name, unsigned size);
int mtar_write_dir_header(mtar_t* tar, const char* name);
int mtar_write_data(mtar_t* tar, const void* data, unsigned size);
int mtar_finalize(mtar_t* tar);
#ifdef __cplusplus
}
#endif
#endif
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