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/*
* libdpkg - Debian packaging suite library routines
* ar.h - primitives for ar handling
*
* Copyright © 2010 Guillem Jover <guillem@debian.org>
*
* This 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 2 of the License, or
* (at your option) any later version.
*
* This 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, see <https://www.gnu.org/licenses/>.
*/
#ifndef LIBDPKG_AR_H
#define LIBDPKG_AR_H
#include <sys/types.h>
#include <stdbool.h>
#include <stdint.h>
#include <dpkg/macros.h>
DPKG_BEGIN_DECLS
/**
* @defgroup ar Ar archive handling
* @ingroup dpkg-public
* @{
*/
#define DPKG_AR_MAGIC "!<arch>\n"
#define DPKG_AR_FMAG "`\n"
/**
* An on-disk archive header.
*/
struct dpkg_ar_hdr {
char ar_name[16]; /* Member file name, sometimes / terminated. */
char ar_date[12]; /* File date, decimal seconds since Epoch. */
char ar_uid[6], ar_gid[6]; /* User and group IDs, in ASCII decimal. */
char ar_mode[8]; /* File mode, in ASCII octal. */
char ar_size[10]; /* File size, in ASCII decimal. */
char ar_fmag[2];
};
/**
* An archive (Unix ar) file.
*/
struct dpkg_ar {
const char *name;
mode_t mode;
intmax_t time;
off_t size;
int fd;
};
/**
* In-memory archive member information.
*/
struct dpkg_ar_member {
struct dpkg_ar_member *next;
const char *name;
off_t offset;
off_t size;
intmax_t time;
mode_t mode;
uid_t uid;
gid_t gid;
};
struct dpkg_ar *
dpkg_ar_fdopen(const char *filename, int fd);
struct dpkg_ar *dpkg_ar_open(const char *filename);
struct dpkg_ar *dpkg_ar_create(const char *filename, mode_t mode);
void dpkg_ar_set_mtime(struct dpkg_ar *ar, intmax_t mtime);
void dpkg_ar_close(struct dpkg_ar *ar);
void dpkg_ar_normalize_name(struct dpkg_ar_hdr *arh);
bool dpkg_ar_member_is_illegal(struct dpkg_ar_hdr *arh);
void dpkg_ar_put_magic(struct dpkg_ar *ar);
void dpkg_ar_member_put_header(struct dpkg_ar *ar,
struct dpkg_ar_member *member);
void dpkg_ar_member_put_file(struct dpkg_ar *ar, const char *name,
int fd, off_t size);
void dpkg_ar_member_put_mem(struct dpkg_ar *ar, const char *name,
const void *data, size_t size);
off_t dpkg_ar_member_get_size(struct dpkg_ar *ar, struct dpkg_ar_hdr *arh);
/** @} */
DPKG_END_DECLS
#endif /* LIBDPKG_AR_H */
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