1/*-
2 * SPDX-License-Identifier: BSD-2-Clause
3 *
4 * Copyright (c) 2007 Kai Wang
5 * All rights reserved.
6 *
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
9 * are met:
10 * 1. Redistributions of source code must retain the above copyright
11 *    notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 *    notice, this list of conditions and the following disclaimer in the
14 *    documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29#define	BSDAR_VERSION	"1.1.0"
30
31/*
32 * ar(1) options.
33 */
34#define AR_A	0x0001		/* position-after */
35#define AR_B	0x0002		/* position-before */
36#define AR_C	0x0004		/* creating new archive */
37#define AR_CC	0x0008		/* do not overwrite when extracting */
38#define AR_J	0x0010		/* bzip2 compression */
39#define AR_O	0x0020		/* preserve original mtime when extracting */
40#define AR_S	0x0040		/* write archive symbol table */
41#define AR_SS	0x0080		/* do not write archive symbol table */
42#define AR_TR	0x0100		/* only keep first 15 chars for member name */
43#define AR_U	0x0200		/* only extract or update newer members.*/
44#define AR_V	0x0400		/* verbose mode */
45#define AR_Z	0x0800		/* gzip compression */
46#define AR_D	0x1000		/* insert dummy mode, mtime, uid and gid */
47
48#define DEF_BLKSZ 10240		/* default block size */
49
50/*
51 * Convenient wrapper for general libarchive error handling.
52 */
53#define	AC(CALL) do {							\
54	if ((CALL))							\
55		bsdar_errc(bsdar, archive_errno(a), "%s",		\
56		    archive_error_string(a));				\
57} while (0)
58
59/*
60 * In-memory representation of archive member(object).
61 */
62struct ar_obj {
63	char		 *name;		/* member name */
64	void		 *maddr;	/* mmap start address */
65	uid_t		  uid;		/* user id */
66	gid_t		  gid;		/* group id */
67	mode_t		  md;		/* octal file permissions */
68	size_t		  size;		/* member size */
69	time_t		  mtime;	/* modification time */
70	int		  fd;		/* file descriptor */
71	dev_t		  dev;		/* inode's device */
72	ino_t		  ino;		/* inode's number */
73
74	TAILQ_ENTRY(ar_obj) objs;
75};
76
77/*
78 * Structure encapsulates the "global" data for "ar" program.
79 */
80struct bsdar {
81	const char	 *filename;	/* archive name. */
82	const char	 *addlib;	/* target of ADDLIB. */
83	const char	 *posarg;	/* position arg for modifiers -a, -b. */
84	char		  mode;		/* program mode */
85	int		  options;	/* command line options */
86
87	const char	 *progname;	/* program name */
88	int		  argc;
89	char		**argv;
90
91	/*
92	 * Fields for the archive string table.
93	 */
94	char		 *as;		/* buffer for archive string table. */
95	size_t		  as_sz;	/* current size of as table. */
96	size_t		  as_cap;	/* capacity of as table buffer. */
97
98	/*
99	 * Fields for the archive symbol table.
100	 */
101	uint64_t	  s_cnt;	/* current number of symbols. */
102	uint64_t	 *s_so;		/* symbol offset table. */
103	uint64_t	  s_so_max;     /* maximum symbol offset. */
104	size_t		  s_so_cap;	/* capacity of so table buffer. */
105
106	char		 *s_sn;		/* symbol name table */
107	size_t		  s_sn_cap;	/* capacity of sn table buffer. */
108	size_t		  s_sn_sz;	/* current size of sn table. */
109	/* Current member's offset (relative to the end of pseudo members.) */
110	off_t		  rela_off;
111
112	TAILQ_HEAD(, ar_obj) v_obj;	/* object(member) list */
113};
114
115void	ar_mode_script(struct bsdar *ar);
116int	ar_read_archive(struct bsdar *ar, int mode, FILE *out);
117int	ar_write_archive(struct bsdar *ar, int mode);
118void	bsdar_errc(struct bsdar *, int _code, const char *fmt, ...) __dead2;
119void	bsdar_warnc(struct bsdar *, int _code, const char *fmt, ...);
120