/*-
 * SPDX-License-Identifier: BSD-2-Clause
 *
 * Copyright (c) 2007 Kai Wang
 * 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 AND CONTRIBUTORS ``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 OR CONTRIBUTORS 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.
 */

#define BSDAR_VERSION   "1.1.0"

/*
 * ar(1) options.
 */
#define AR_A    0x0001          /* position-after */
#define AR_B    0x0002          /* position-before */
#define AR_C    0x0004          /* creating new archive */
#define AR_CC   0x0008          /* do not overwrite when extracting */
#define AR_J    0x0010          /* bzip2 compression */
#define AR_O    0x0020          /* preserve original mtime when extracting */
#define AR_S    0x0040          /* write archive symbol table */
#define AR_SS   0x0080          /* do not write archive symbol table */
#define AR_TR   0x0100          /* only keep first 15 chars for member name */
#define AR_U    0x0200          /* only extract or update newer members.*/
#define AR_V    0x0400          /* verbose mode */
#define AR_Z    0x0800          /* gzip compression */
#define AR_D    0x1000          /* insert dummy mode, mtime, uid and gid */

#define DEF_BLKSZ 10240         /* default block size */

/*
 * Convenient wrapper for general libarchive error handling.
 */
#define AC(CALL) do {                                                   \
        if ((CALL))                                                     \
                bsdar_errc(bsdar, archive_errno(a), "%s",               \
                    archive_error_string(a));                           \
} while (0)

/*
 * In-memory representation of archive member(object).
 */
struct ar_obj {
        char             *name;         /* member name */
        void             *maddr;        /* mmap start address */
        uid_t             uid;          /* user id */
        gid_t             gid;          /* group id */
        mode_t            md;           /* octal file permissions */
        size_t            size;         /* member size */
        time_t            mtime;        /* modification time */
        int               fd;           /* file descriptor */
        dev_t             dev;          /* inode's device */
        ino_t             ino;          /* inode's number */

        TAILQ_ENTRY(ar_obj) objs;
};

/*
 * Structure encapsulates the "global" data for "ar" program.
 */
struct bsdar {
        const char       *filename;     /* archive name. */
        const char       *addlib;       /* target of ADDLIB. */
        const char       *posarg;       /* position arg for modifiers -a, -b. */
        char              mode;         /* program mode */
        int               options;      /* command line options */

        const char       *progname;     /* program name */
        int               argc;
        char            **argv;

        /*
         * Fields for the archive string table.
         */
        char             *as;           /* buffer for archive string table. */
        size_t            as_sz;        /* current size of as table. */
        size_t            as_cap;       /* capacity of as table buffer. */

        /*
         * Fields for the archive symbol table.
         */
        uint64_t          s_cnt;        /* current number of symbols. */
        uint64_t         *s_so;         /* symbol offset table. */
        uint64_t          s_so_max;     /* maximum symbol offset. */
        size_t            s_so_cap;     /* capacity of so table buffer. */

        char             *s_sn;         /* symbol name table */
        size_t            s_sn_cap;     /* capacity of sn table buffer. */
        size_t            s_sn_sz;      /* current size of sn table. */
        /* Current member's offset (relative to the end of pseudo members.) */
        off_t             rela_off;

        TAILQ_HEAD(, ar_obj) v_obj;     /* object(member) list */
};

void    ar_mode_script(struct bsdar *ar);
int     ar_read_archive(struct bsdar *ar, int mode, FILE *out);
int     ar_write_archive(struct bsdar *ar, int mode);
void    bsdar_errc(struct bsdar *, int _code, const char *fmt, ...) __dead2;
void    bsdar_warnc(struct bsdar *, int _code, const char *fmt, ...);