Attachment #226923 for bug #257599

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%{
/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2008 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/mman.h>
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>

#include "ar.h"

#define TEMPLATE "arscp.XXXXXXXX"

struct list {
	char		*str;
	struct list	*next;
};


extern int	yylex(void);

static void	yyerror(const char *);
static void	arscp_addlib(char *archive, struct list *list);
static void	arscp_addmod(struct list *list);
static void	arscp_clear(void);
static int	arscp_copy(int ifd, int ofd);
static void	arscp_create(char *in, char *out);
static void	arscp_delete(struct list *list);
static void	arscp_dir(char *archive, struct list *list, char *rlt);
static void	arscp_end(int eval);
static void	arscp_extract(struct list *list);
static void	arscp_free_argv(void);
static void	arscp_free_mlist(struct list *list);
static void	arscp_list(void);
static struct list *arscp_mlist(struct list *list, char *str);
static void	arscp_mlist2argv(struct list *list);
static int	arscp_mlist_len(struct list *list);
static void	arscp_open(char *fname);
static void	arscp_prompt(void);
static void	arscp_replace(struct list *list);
static void	arscp_save(void);
static int	arscp_target_exist(void);

extern int		 lineno;

static struct bsdar	*bsdar;
static char		*target;
static char		*tmpac;
static int		 interactive;
static int		 verbose;

%}

%token ADDLIB
%token ADDMOD
%token CLEAR
%token CREATE
%token DELETE
%token DIRECTORY
%token END
%token EXTRACT
%token LIST
%token OPEN
%token REPLACE
%token VERBOSE
%token SAVE
%token LP
%token RP
%token COMMA
%token EOL
%token <str> FNAME
%type <list> mod_list

%union {
	char		*str;
	struct list	*list;
}

%%

begin
	: { arscp_prompt(); } ar_script
	;

ar_script
	: cmd_list
	|
	;

mod_list
	: FNAME { $$ = arscp_mlist(NULL, $1); }
	| mod_list separator FNAME { $$ = arscp_mlist($1, $3); }
	;

separator
	: COMMA
	|
	;

cmd_list
	: rawcmd
	| cmd_list rawcmd
	;

rawcmd
	: cmd EOL { arscp_prompt(); }
	;

cmd
	: addlib_cmd
	| addmod_cmd
	| clear_cmd
	| create_cmd
	| delete_cmd
	| directory_cmd
	| end_cmd
	| extract_cmd
	| list_cmd
	| open_cmd
	| replace_cmd
	| verbose_cmd
	| save_cmd
	| invalid_cmd
	| empty_cmd
	| error
	;

addlib_cmd
	: ADDLIB FNAME LP mod_list RP { arscp_addlib($2, $4); }
	| ADDLIB FNAME { arscp_addlib($2, NULL); }
	;

addmod_cmd
	: ADDMOD mod_list { arscp_addmod($2); }
	;

clear_cmd
	: CLEAR { arscp_clear(); }
	;

create_cmd
	: CREATE FNAME { arscp_create(NULL, $2); }
	;

delete_cmd
	: DELETE mod_list { arscp_delete($2); }
	;

directory_cmd
	: DIRECTORY FNAME { arscp_dir($2, NULL, NULL); }
	| DIRECTORY FNAME LP mod_list RP { arscp_dir($2, $4, NULL); }
	| DIRECTORY FNAME LP mod_list RP FNAME { arscp_dir($2, $4, $6); }
	;

end_cmd
	: END { arscp_end(EXIT_SUCCESS); }
	;

extract_cmd
	: EXTRACT mod_list { arscp_extract($2); }
	;

list_cmd
	: LIST { arscp_list(); }
	;

open_cmd
	: OPEN FNAME { arscp_open($2); }
	;

replace_cmd
	: REPLACE mod_list { arscp_replace($2); }
	;

save_cmd
	: SAVE { arscp_save(); }
	;

verbose_cmd
	: VERBOSE { verbose = !verbose; }
	;

empty_cmd
	:
	;

invalid_cmd
	: FNAME { yyerror(NULL); }
	;

%%

/* ARGSUSED */
static void
yyerror(const char *s)
{

	(void) s;
	printf("Syntax error in archive script, line %d\n", lineno);
}

/*
 * arscp_open first open an archive and check its validity. If the archive
 * format is valid, it calls arscp_create to create a temporary copy of
 * the archive.
 */
static void
arscp_open(char *fname)
{
	struct archive		*a;
	struct archive_entry	*entry;
	int			 r;

	if ((a = archive_read_new()) == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, 0, "archive_read_new failed");
	archive_read_support_format_ar(a);
	AC(archive_read_open_filename(a, fname, DEF_BLKSZ));
	if ((r = archive_read_next_header(a, &entry)))
		bsdar_warnc(bsdar, archive_errno(a), "%s",
		    archive_error_string(a));
	AC(archive_read_close(a));
	AC(archive_read_free(a));
	if (r != ARCHIVE_OK)
		return;
	arscp_create(fname, fname);
}

/*
 * Create archive. in != NULL indicate it's a OPEN cmd, and resulting
 * archive is based on modification of an existing one. If in == NULL,
 * we are in CREATE cmd and a new empty archive will be created.
 */
static void
arscp_create(char *in, char *out)
{
	struct archive		*a;
	int			 ifd, ofd;

	/* Delete previously created temporary archive, if any. */
	if (tmpac) {
		if (unlink(tmpac) < 0)
			bsdar_errc(bsdar, EX_IOERR, errno, "unlink failed");
		free(tmpac);
	}

	tmpac = strdup(TEMPLATE);
	if (tmpac == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "strdup failed");
	if ((ofd = mkstemp(tmpac)) < 0)
		bsdar_errc(bsdar, EX_IOERR, errno, "mkstemp failed");

	if (in) {
		/*
		 * Command OPEN creates a temporary copy of the
		 * input archive.
		 */
		if ((ifd = open(in, O_RDONLY)) < 0) {
			bsdar_warnc(bsdar, errno, "open failed");
			return;
		}
		if (arscp_copy(ifd, ofd)) {
			bsdar_warnc(bsdar, 0, "arscp_copy failed");
			return;
		}
		close(ifd);
		close(ofd);
	} else {
		/*
		 * Command CREATE creates an "empty" archive.
		 * (archive with only global header)
		 */
		if ((a = archive_write_new()) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, 0,
			    "archive_write_new failed");
		archive_write_set_format_ar_svr4(a);
		AC(archive_write_open_fd(a, ofd));
		AC(archive_write_close(a));
		AC(archive_write_free(a));
	}

	/* Override previous target, if any. */
	if (target)
		free(target);

	target = out;
	bsdar->filename = tmpac;
}

/* A file copying implementation using mmap. */
static int
arscp_copy(int ifd, int ofd)
{
	struct stat		 sb;
	char			*buf, *p;
	ssize_t			 w;
	size_t			 bytes;

	if (fstat(ifd, &sb) < 0) {
		bsdar_warnc(bsdar, errno, "fstate failed");
		return (1);
	}
	if ((p = mmap(NULL, sb.st_size, PROT_READ, MAP_SHARED, ifd,
	    (off_t)0)) == MAP_FAILED) {
		bsdar_warnc(bsdar, errno, "mmap failed");
		return (1);
	}
	for (buf = p, bytes = sb.st_size; bytes > 0; bytes -= w) {
		w = write(ofd, buf, bytes);
		if (w <= 0) {
			bsdar_warnc(bsdar, errno, "write failed");
			break;
		}
	}
	if (munmap(p, sb.st_size) < 0)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "munmap failed");
	if (bytes > 0)
		return (1);

	return (0);
}

/*
 * Add all modules of archive to current archive, if list != NULL,
 * only those modules specified in 'list' will be added.
 */
static void
arscp_addlib(char *archive, struct list *list)
{

	if (!arscp_target_exist())
		return;
	arscp_mlist2argv(list);
	bsdar->addlib = archive;
	ar_mode_A(bsdar);
	arscp_free_argv();
	arscp_free_mlist(list);
}

/* Add modules into current archive. */
static void
arscp_addmod(struct list *list)
{

	if (!arscp_target_exist())
		return;
	arscp_mlist2argv(list);
	ar_mode_q(bsdar);
	arscp_free_argv();
	arscp_free_mlist(list);
}

/* Delete modules from current archive. */
static void
arscp_delete(struct list *list)
{

	if (!arscp_target_exist())
		return;
	arscp_mlist2argv(list);
	ar_mode_d(bsdar);
	arscp_free_argv();
	arscp_free_mlist(list);
}

/* Extract modules from current archive. */
static void
arscp_extract(struct list *list)
{

	if (!arscp_target_exist())
		return;
	arscp_mlist2argv(list);
	ar_mode_x(bsdar);
	arscp_free_argv();
	arscp_free_mlist(list);
}

/* List modules of archive. (Simple Mode) */
static void
arscp_list(void)
{

	if (!arscp_target_exist())
		return;
	bsdar->argc = 0;
	bsdar->argv = NULL;
	/* Always verbose. */
	bsdar->options |= AR_V;
	ar_mode_t(bsdar);
	bsdar->options &= ~AR_V;
}

/* List modules of archive. (Advance Mode) */
static void
arscp_dir(char *archive, struct list *list, char *rlt)
{
	FILE	*out;

	/* If rlt != NULL, redirect output to it */
	out = NULL;
	if (rlt) {
		out = stdout;
		if ((stdout = fopen(rlt, "w")) == NULL)
			bsdar_errc(bsdar, EX_IOERR, errno,
			    "fopen %s failed", rlt);
	}

	bsdar->filename = archive;
	if (list)
		arscp_mlist2argv(list);
	else {
		bsdar->argc = 0;
		bsdar->argv = NULL;
	}
	if (verbose)
		bsdar->options |= AR_V;
	ar_mode_t(bsdar);
	bsdar->options &= ~AR_V;

	if (rlt) {
		if (fclose(stdout) == EOF)
			bsdar_errc(bsdar, EX_IOERR, errno,
			    "fclose %s failed", rlt);
		stdout = out;
		free(rlt);
	}
	free(archive);
	bsdar->filename = tmpac;
	arscp_free_argv();
	arscp_free_mlist(list);
}


/* Replace modules of current archive. */
static void
arscp_replace(struct list *list)
{

	if (!arscp_target_exist())
		return;
	arscp_mlist2argv(list);
	ar_mode_r(bsdar);
	arscp_free_argv();
	arscp_free_mlist(list);
}

/* Rename the temporary archive to the target archive. */
static void
arscp_save(void)
{
	mode_t mask;

	if (target) {
		if (rename(tmpac, target) < 0)
			bsdar_errc(bsdar, EX_IOERR, errno, "rename failed");
		/*
		 * mkstemp creates temp files with mode 0600, here we
		 * set target archive mode per process umask.
		 */
		mask = umask(0);
		umask(mask);
		if (chmod(target, 0666 & ~mask) < 0)
			bsdar_errc(bsdar, EX_IOERR, errno, "chmod failed");
		free(tmpac);
		free(target);
		tmpac = NULL;
		target= NULL;
		bsdar->filename = NULL;
	} else
		bsdar_warnc(bsdar, 0, "no open output archive");
}

/*
 * Discard all the contents of current archive. This is achieved by
 * invoking CREATE cmd on current archive.
 */
static void
arscp_clear(void)
{
	char		*new_target;

	if (target) {
		new_target = strdup(target);
		if (new_target == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "strdup failed");
		arscp_create(NULL, new_target);
	}
}

/*
 * Quit ar(1). Note that END cmd will not SAVE current archive
 * before exit.
 */
static void
arscp_end(int eval)
{

	if (target)
		free(target);
	if (tmpac) {
		if (unlink(tmpac) == -1)
			bsdar_errc(bsdar, EX_IOERR, errno, "unlink %s failed",
			    tmpac);
		free(tmpac);
	}

	exit(eval);
}

/*
 * Check if target specified, i.e, whether OPEN or CREATE has been
 * issued by user.
 */
static int
arscp_target_exist(void)
{

	if (target)
		return (1);

	bsdar_warnc(bsdar, 0, "no open output archive");
	return (0);
}

/* Construct module list. */
static struct list *
arscp_mlist(struct list *list, char *str)
{
	struct list *l;

	l = malloc(sizeof(*l));
	if (l == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
	l->str = str;
	l->next = list;

	return (l);
}

/* Calculate the length of a mlist. */
static int
arscp_mlist_len(struct list *list)
{
	int len;

	for(len = 0; list; list = list->next)
		len++;

	return (len);
}

/* Free the space allocated for mod_list. */
static void
arscp_free_mlist(struct list *list)
{
	struct list *l;

	/* Note that list->str was freed in arscp_free_argv. */
	for(; list; list = l) {
		l = list->next;
		free(list);
	}
}

/* Convert mlist to argv array. */
static void
arscp_mlist2argv(struct list *list)
{
	char	**argv;
	int	  i, n;

	n = arscp_mlist_len(list);
	argv = malloc(n * sizeof(*argv));
	if (argv == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");

	/* Note that module names are stored in reverse order in mlist. */
	for(i = n - 1; i >= 0; i--, list = list->next) {
		if (list == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "invalid mlist");
		argv[i] = list->str;
	}

	bsdar->argc = n;
	bsdar->argv = argv;
}

/* Free space allocated for argv array and its elements. */
static void
arscp_free_argv(void)
{
	int i;

	for(i = 0; i < bsdar->argc; i++)
		free(bsdar->argv[i]);

	free(bsdar->argv);
}

/* Show a prompt if we are in interactive mode */
static void
arscp_prompt(void)
{

	if (interactive) {
		printf("AR >");
		fflush(stdout);
	}
}

/* Main function for ar script mode. */
void
ar_mode_script(struct bsdar *ar)
{

	bsdar = ar;
	interactive = isatty(fileno(stdin));
	while(yyparse()) {
		if (!interactive)
			arscp_end(EXIT_FAILURE);
	}

	/* Script ends without END */
	arscp_end(EXIT_SUCCESS);
}




/*-
 * SPDX-License-Identifier: BSD-3-Clause
 *
 * Copyright (c) 2007 Kai Wang
 * Copyright (c) 2007 Tim Kientzle
 * Copyright (c) 2007 Joseph Koshy
 * 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.
 */

/*-
 * Copyright (c) 1990, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Hugh Smith at The University of Guelph.
 *
 * 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.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/queue.h>
#include <sys/types.h>
#include <archive.h>
#include <errno.h>
#include <getopt.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>

#include "ar.h"

enum options
{
	OPTION_HELP
};

static struct option longopts[] =
{
	{"help", no_argument, NULL, OPTION_HELP},
	{"version", no_argument, NULL, 'V'},
	{NULL, 0, NULL, 0}
};

static void	bsdar_usage(void);
static void	ranlib_usage(void);
static void	set_mode(struct bsdar *bsdar, char opt);
static void	only_mode(struct bsdar *bsdar, const char *opt,
		    const char *valid_modes);
static void	bsdar_version(void);
static void	ranlib_version(void);

int
main(int argc, char **argv)
{
	struct bsdar	*bsdar, bsdar_storage;
	char		*p;
	size_t		 len;
	int		 exitcode, i, opt, Dflag, Uflag;

	bsdar = &bsdar_storage;
	memset(bsdar, 0, sizeof(*bsdar));
	exitcode = EXIT_SUCCESS;
	Dflag = 0;
	Uflag = 0;

	if ((bsdar->progname = getprogname()) == NULL)
		bsdar->progname = "ar";

	/* Act like ranlib if our name ends in "ranlib"; this
	 * accommodates arm-freebsd7.1-ranlib, bsdranlib, etc. */
	len = strlen(bsdar->progname);
	if (len >= strlen("ranlib") &&
	    strcmp(bsdar->progname + len - strlen("ranlib"), "ranlib") == 0) {
		while ((opt = getopt_long(argc, argv, "tDUV", longopts,
		    NULL)) != -1) {
			switch(opt) {
			case 't':
				/* Ignored. */
				break;
			case 'D':
				Dflag = 1;
				Uflag = 0;
				break;
			case 'U':
				Uflag = 1;
				Dflag = 0;
				break;
			case 'V':
				ranlib_version();
				break;
			case OPTION_HELP:
				ranlib_usage();
			default:
				ranlib_usage();
			}
		}
		argv += optind;
		argc -= optind;

		if (*argv == NULL)
			ranlib_usage();

		/* Enable determinstic mode unless -U is set. */
		if (Uflag == 0)
			bsdar->options |= AR_D;
		bsdar->options |= AR_S;
		while ((bsdar->filename = *argv++) != NULL)
			if (ar_mode_s(bsdar))
				exitcode = EXIT_FAILURE;

		exit(exitcode);
	} else {
		if (argc < 2)
			bsdar_usage();

		if (*argv[1] != '-') {
			len = strlen(argv[1]) + 2;
			if ((p = malloc(len)) == NULL)
				bsdar_errc(bsdar, EX_SOFTWARE, errno,
				    "malloc failed");
			*p = '-';
			(void)strlcpy(p + 1, argv[1], len - 1);
			argv[1] = p;
		}
	}

	while ((opt = getopt_long(argc, argv, "abCcdDfijlMmopqrSsTtUuVvxz",
	    longopts, NULL)) != -1) {
		switch(opt) {
		case 'a':
			bsdar->options |= AR_A;
			break;
		case 'b':
		case 'i':
			bsdar->options |= AR_B;
			break;
		case 'C':
			bsdar->options |= AR_CC;
			break;
		case 'c':
			bsdar->options |= AR_C;
			break;
		case 'd':
			set_mode(bsdar, opt);
			break;
		case 'D':
			Dflag = 1;
			Uflag = 0;
			break;
		case 'f':
		case 'T':
			bsdar->options |= AR_TR;
			break;
		case 'j':
			/* ignored */
			break;
		case 'l':
			/* ignored, for GNU ar comptibility */
			break;
		case 'M':
			set_mode(bsdar, opt);
			break;
		case 'm':
			set_mode(bsdar, opt);
			break;
		case 'o':
			bsdar->options |= AR_O;
			break;
		case 'p':
			set_mode(bsdar, opt);
			break;
		case 'q':
			set_mode(bsdar, opt);
			break;
		case 'r':
			set_mode(bsdar, opt);
			break;
		case 'S':
			bsdar->options |= AR_SS;
			break;
		case 's':
			bsdar->options |= AR_S;
			break;
		case 't':
			set_mode(bsdar, opt);
			break;
		case 'U':
			Uflag = 1;
			Dflag = 0;
			break;
		case 'u':
			bsdar->options |= AR_U;
			break;
		case 'V':
			bsdar_version();
			break;
		case 'v':
			bsdar->options |= AR_V;
			break;
		case 'x':
			set_mode(bsdar, opt);
			break;
		case 'z':
			/* ignored */
			break;
		case OPTION_HELP:
			bsdar_usage();
		default:
			bsdar_usage();
		}
	}

	argv += optind;
	argc -= optind;

	if (*argv == NULL && bsdar->mode != 'M')
		bsdar_usage();

	if (bsdar->options & AR_A && bsdar->options & AR_B)
		bsdar_errc(bsdar, EXIT_FAILURE, 0,
		    "only one of -a and -[bi] options allowed");

	if (bsdar->options & AR_J && bsdar->options & AR_Z)
		bsdar_errc(bsdar, EXIT_FAILURE, 0,
		    "only one of -j and -z options allowed");

	if (bsdar->options & AR_S && bsdar->options & AR_SS)
		bsdar_errc(bsdar, EXIT_FAILURE, 0,
		    "only one of -s and -S options allowed");

	if (bsdar->options & (AR_A | AR_B)) {
		if (*argv == NULL)
			bsdar_errc(bsdar, EXIT_FAILURE, 0,
			    "no position operand specified");
		if ((bsdar->posarg = basename(*argv)) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno,
			    "basename failed");
		argc--;
		argv++;
	}

	/* Set determinstic mode for -D, and by default without -U. */
	if (Dflag || (Uflag == 0 && (bsdar->mode == 'q' || bsdar->mode == 'r' ||
	    (bsdar->mode == '\0' && bsdar->options & AR_S))))
		bsdar->options |= AR_D;

	if (bsdar->options & AR_A)
		only_mode(bsdar, "-a", "mqr");
	if (bsdar->options & AR_B)
		only_mode(bsdar, "-b", "mqr");
	if (bsdar->options & AR_C)
		only_mode(bsdar, "-c", "qr");
	if (bsdar->options & AR_CC)
		only_mode(bsdar, "-C", "x");
	if (Dflag)
		only_mode(bsdar, "-D", "qr");
	if (Uflag)
		only_mode(bsdar, "-U", "qr");
	if (bsdar->options & AR_O)
		only_mode(bsdar, "-o", "x");
	if (bsdar->options & AR_SS)
		only_mode(bsdar, "-S", "mqr");
	if (bsdar->options & AR_U)
		only_mode(bsdar, "-u", "qrx");

	if (bsdar->mode == 'M') {
		ar_mode_script(bsdar);
		exit(EXIT_SUCCESS);
	}

	if ((bsdar->filename = *argv) == NULL)
		bsdar_usage();

	bsdar->argc = --argc;
	bsdar->argv = ++argv;

	if ((!bsdar->mode || strchr("ptx", bsdar->mode)) &&
	    bsdar->options & AR_S) {
		exitcode = ar_mode_s(bsdar);
		if (!bsdar->mode)
			exit(exitcode);
	}

	switch(bsdar->mode) {
	case 'd':
		ar_mode_d(bsdar);
		break;
	case 'm':
		ar_mode_m(bsdar);
		break;
	case 'p':
		ar_mode_p(bsdar);
		break;
	case 'q':
		ar_mode_q(bsdar);
		break;
	case 'r':
		ar_mode_r(bsdar);
		break;
	case 't':
		ar_mode_t(bsdar);
		break;
	case 'x':
		ar_mode_x(bsdar);
		break;
	default:
		bsdar_usage();
		/* NOTREACHED */
	}

	for (i = 0; i < bsdar->argc; i++) {
		if (bsdar->argv[i] != NULL) {
			bsdar_warnc(bsdar, 0, "%s: not found in archive",
			    bsdar->argv[i]);
			exitcode = EXIT_FAILURE;
		}
	}

	exit(exitcode);
}

static void
set_mode(struct bsdar *bsdar, char opt)
{

	if (bsdar->mode != '\0' && bsdar->mode != opt)
		bsdar_errc(bsdar, EXIT_FAILURE, 0,
		    "Can't specify both -%c and -%c", opt, bsdar->mode);
	bsdar->mode = opt;
}

static void
only_mode(struct bsdar *bsdar, const char *opt, const char *valid_modes)
{

	if (strchr(valid_modes, bsdar->mode) == NULL)
		bsdar_errc(bsdar, EXIT_FAILURE, 0,
		    "Option %s is not permitted in mode -%c", opt, bsdar->mode);
}

static void
bsdar_usage(void)
{

	(void)fprintf(stderr, "usage:  ar -d [-Tjsvz] archive file ...\n");
	(void)fprintf(stderr, "\tar -m [-Tjsvz] archive file ...\n");
	(void)fprintf(stderr, "\tar -m [-Tabijsvz] position archive file ...\n");
	(void)fprintf(stderr, "\tar -p [-Tv] archive [file ...]\n");
	(void)fprintf(stderr, "\tar -q [-TcDjsUvz] archive file ...\n");
	(void)fprintf(stderr, "\tar -r [-TcDjsUuvz] archive file ...\n");
	(void)fprintf(stderr, "\tar -r [-TabcDijsUuvz] position archive file ...\n");
	(void)fprintf(stderr, "\tar -s [-jz] archive\n");
	(void)fprintf(stderr, "\tar -t [-Tv] archive [file ...]\n");
	(void)fprintf(stderr, "\tar -x [-CTouv] archive [file ...]\n");
	(void)fprintf(stderr, "\tar -V\n");
	exit(EXIT_FAILURE);
}

static void
ranlib_usage(void)
{

	(void)fprintf(stderr, "usage:	ranlib [-DtU] archive ...\n");
	(void)fprintf(stderr, "\tranlib -V\n");
	exit(EXIT_FAILURE);
}

static void
bsdar_version(void)
{
	(void)printf("BSD ar %s - %s\n", BSDAR_VERSION, archive_version_string());
	exit(EXIT_SUCCESS);
}

static void
ranlib_version(void)
{
	(void)printf("ranlib %s - %s\n", BSDAR_VERSION, archive_version_string());
	exit(EXIT_SUCCESS);
}




/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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.
 *
 * $FreeBSD$
 */

#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, EXIT_FAILURE, 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	bsdar_errc(struct bsdar *, int _eval, int _code,
	    const char *fmt, ...) __dead2;
void	bsdar_warnc(struct bsdar *, int _code, const char *fmt, ...);
int	ar_mode_d(struct bsdar *bsdar);
int	ar_mode_m(struct bsdar *bsdar);
int	ar_mode_p(struct bsdar *bsdar);
int	ar_mode_q(struct bsdar *bsdar);
int	ar_mode_r(struct bsdar *bsdar);
int	ar_mode_s(struct bsdar *bsdar);
int	ar_mode_t(struct bsdar *bsdar);
int	ar_mode_x(struct bsdar *bsdar);
int	ar_mode_A(struct bsdar *bsdar);
void	ar_mode_script(struct bsdar *ar);




/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2007 Kai Wang
 * Copyright (c) 2007 Tim Kientzle
 * 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <errno.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>

#include "ar.h"

static int read_archive(struct bsdar *bsdar, char mode);

int
ar_mode_p(struct bsdar *bsdar)
{

	return (read_archive(bsdar, 'p'));
}

int
ar_mode_t(struct bsdar *bsdar)
{

	return (read_archive(bsdar, 't'));
}

int
ar_mode_x(struct bsdar *bsdar)
{

	return (read_archive(bsdar, 'x'));
}

/*
 * Handle read modes: 'x', 't' and 'p'.
 */
static int
read_archive(struct bsdar *bsdar, char mode)
{
	struct archive		 *a;
	struct archive_entry	 *entry;
	struct stat		  sb;
	struct tm		 *tp;
	const char		 *bname;
	const char		 *name;
	mode_t			  md;
	size_t			  size;
	time_t			  mtime;
	uid_t			  uid;
	gid_t			  gid;
	char			**av;
	char			  buf[25];
	char			  find;
	int			  exitcode, flags, r, i;

	if ((a = archive_read_new()) == NULL)
		bsdar_errc(bsdar, EXIT_FAILURE, 0, "archive_read_new failed");
	archive_read_support_format_ar(a);
	AC(archive_read_open_filename(a, bsdar->filename, DEF_BLKSZ));

	exitcode = EXIT_SUCCESS;

	for (;;) {
		r = archive_read_next_header(a, &entry);
		if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
		    r == ARCHIVE_FATAL)
			bsdar_warnc(bsdar, archive_errno(a), "%s",
			    archive_error_string(a));
		if (r == ARCHIVE_EOF || r == ARCHIVE_FATAL)
			break;
		if (r == ARCHIVE_RETRY) {
			bsdar_warnc(bsdar, 0, "Retrying...");
			continue;
		}

		if ((name = archive_entry_pathname(entry)) == NULL)
			break;

		/* Skip pseudo members. */
		if (strcmp(name, "/") == 0 || strcmp(name, "//") == 0 ||
		    strcmp(name, "/SYM64/") == 0)
			continue;

		if (bsdar->argc > 0) {
			find = 0;
			for(i = 0; i < bsdar->argc; i++) {
				av = &bsdar->argv[i];
				if (*av == NULL)
					continue;
				if ((bname = basename(*av)) == NULL)
					bsdar_errc(bsdar, EXIT_FAILURE, errno,
					    "basename failed");
				if (strcmp(bname, name) != 0)
					continue;

				*av = NULL;
				find = 1;
				break;
			}
			if (!find)
				continue;
		}

		if (mode == 't') {
			if (bsdar->options & AR_V) {
				md = archive_entry_mode(entry);
				uid = archive_entry_uid(entry);
				gid = archive_entry_gid(entry);
				size = archive_entry_size(entry);
				mtime = archive_entry_mtime(entry);
				(void)strmode(md, buf);
				(void)fprintf(stdout, "%s %6d/%-6d %8ju ",
				    buf + 1, uid, gid, (uintmax_t)size);
				tp = localtime(&mtime);
				(void)strftime(buf, sizeof(buf),
				    "%b %e %H:%M %Y", tp);
				(void)fprintf(stdout, "%s %s", buf, name);
			} else
				(void)fprintf(stdout, "%s", name);
			r = archive_read_data_skip(a);
			if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY ||
			    r == ARCHIVE_FATAL) {
				(void)fprintf(stdout, "\n");
				bsdar_warnc(bsdar, archive_errno(a), "%s",
				    archive_error_string(a));
			}

			if (r == ARCHIVE_FATAL)
				break;

			(void)fprintf(stdout, "\n");
		} else {
			/* mode == 'x' || mode = 'p' */
			if (mode == 'p') {
				if (bsdar->options & AR_V) {
					(void)fprintf(stdout, "\n<%s>\n\n",
					    name);
					fflush(stdout);
				}
				r = archive_read_data_into_fd(a, 1);
			} else {
				/* mode == 'x' */
				if (stat(name, &sb) != 0) {
					if (errno != ENOENT) {
						bsdar_warnc(bsdar, 0,
						    "stat %s failed",
						    bsdar->filename);
						continue;
					}
				} else {
					/* stat success, file exist */
					if (bsdar->options & AR_CC)
						continue;
					if (bsdar->options & AR_U &&
					    archive_entry_mtime(entry) <=
					    sb.st_mtime)
						continue;
				}

				if (bsdar->options & AR_V)
					(void)fprintf(stdout, "x - %s\n", name);
				/* Disallow absolute paths. */
				if (name[0] == '/') {
					bsdar_warnc(bsdar, 0,
					    "Absolute path '%s'", name);
					continue;
				}
				/* Basic path security flags. */
				flags = ARCHIVE_EXTRACT_SECURE_SYMLINKS |
				    ARCHIVE_EXTRACT_SECURE_NODOTDOT;
				if (bsdar->options & AR_O)
					flags |= ARCHIVE_EXTRACT_TIME;

				r = archive_read_extract(a, entry, flags);
			}

			if (r) {
				bsdar_warnc(bsdar, archive_errno(a), "%s",
				    archive_error_string(a));
				exitcode = EXIT_FAILURE;
			}
		}
	}
	AC(archive_read_close(a));
	AC(archive_read_free(a));

	return (exitcode);
}




/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * 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.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <sys/endian.h>
#include <sys/mman.h>
#include <sys/queue.h>
#include <sys/stat.h>
#include <archive.h>
#include <archive_entry.h>
#include <errno.h>
#include <fcntl.h>
#include <gelf.h>
#include <libgen.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>

#include "ar.h"

#define _ARMAG_LEN 8		/* length of ar magic string */
#define _ARHDR_LEN 60		/* length of ar header */
#define _INIT_AS_CAP 128	/* initial archive string table size */
#define _INIT_SYMOFF_CAP (256*(sizeof(uint64_t))) /* initial so table size */
#define _INIT_SYMNAME_CAP 1024			  /* initial sn table size */
#define _MAXNAMELEN_SVR4 15	/* max member name length in svr4 variant */
#define _TRUNCATE_LEN 15	/* number of bytes to keep for member name */

static void	add_to_ar_str_table(struct bsdar *bsdar, const char *name);
static void	add_to_ar_sym_table(struct bsdar *bsdar, const char *name);
static struct ar_obj	*create_obj_from_file(struct bsdar *bsdar,
		    const char *name, time_t mtime);
static void	create_symtab_entry(struct bsdar *bsdar, void *maddr,
		    size_t size);
static void	free_obj(struct bsdar *bsdar, struct ar_obj *obj);
static void	insert_obj(struct bsdar *bsdar, struct ar_obj *obj,
		    struct ar_obj *pos);
static void	prefault_buffer(const char *buf, size_t s);
static void	read_objs(struct bsdar *bsdar, const char *archive,
		    int checkargv);
static int	write_archive(struct bsdar *bsdar, char mode);
static void	write_cleanup(struct bsdar *bsdar);
static void	write_data(struct bsdar *bsdar, struct archive *a,
		    const void *buf, size_t s);
static void	write_objs(struct bsdar *bsdar);

int
ar_mode_d(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 'd'));
}

int
ar_mode_m(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 'm'));
}

int
ar_mode_q(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 'q'));
}

int
ar_mode_r(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 'r'));
}

int
ar_mode_s(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 's'));
}

int
ar_mode_A(struct bsdar *bsdar)
{

	return (write_archive(bsdar, 'A'));
}

/*
 * Create object from file, return created obj upon success, or NULL
 * when an error occurs or the member is not newer than existing
 * one while -u is specified.
 */
static struct ar_obj *
create_obj_from_file(struct bsdar *bsdar, const char *name, time_t mtime)
{
	struct ar_obj		*obj;
	struct stat		 sb;
	const char		*bname;
	char			*tmpname;

	if (name == NULL)
		return (NULL);

	obj = malloc(sizeof(struct ar_obj));
	if (obj == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
	if ((obj->fd = open(name, O_RDONLY, 0)) < 0) {
		bsdar_warnc(bsdar, errno, "can't open file: %s", name);
		free(obj);
		return (NULL);
	}

	tmpname = strdup(name);
	if (tmpname == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "strdup failed");
	if ((bname = basename(tmpname)) == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "basename failed");
	if (bsdar->options & AR_TR && strlen(bname) > _TRUNCATE_LEN) {
		if ((obj->name = malloc(_TRUNCATE_LEN + 1)) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
		(void)strncpy(obj->name, bname, _TRUNCATE_LEN);
		obj->name[_TRUNCATE_LEN] = '\0';
	} else
		if ((obj->name = strdup(bname)) == NULL)
		    bsdar_errc(bsdar, EX_SOFTWARE, errno, "strdup failed");
	free(tmpname);

	if (fstat(obj->fd, &sb) < 0) {
		bsdar_warnc(bsdar, errno, "can't fstat file: %s", obj->name);
		goto giveup;
	}
	if (!S_ISREG(sb.st_mode)) {
		bsdar_warnc(bsdar, 0, "%s is not an ordinary file", obj->name);
		goto giveup;
	}

	/*
	 * When option '-u' is specified and member is not newer than the
	 * existing one, the replace will not happen. While if mtime == 0,
	 * which indicates that this is to "replace a none exist member",
	 * the replace will proceed regardless of '-u'.
	 */
	if (mtime != 0 && bsdar->options & AR_U && sb.st_mtime <= mtime)
		goto giveup;

	/*
	 * When option '-D' is specified, mtime and UID / GID from the file
	 * will be replaced with 0, and file mode with 644. This ensures that
	 * checksums will match for two archives containing the exact same
	 * files.
	 */
	if (bsdar->options & AR_D) {
		obj->uid = 0;
		obj->gid = 0;
		obj->mtime = 0;
		obj->md = S_IFREG | 0644;
	} else {
		obj->uid = sb.st_uid;
		obj->gid = sb.st_gid;
		obj->mtime = sb.st_mtime;
		obj->md = sb.st_mode;
	}
	obj->size = sb.st_size;
	obj->dev = sb.st_dev;
	obj->ino = sb.st_ino;

	if (obj->size == 0) {
		obj->maddr = NULL;
		return (obj);
	}

	if ((obj->maddr = mmap(NULL, obj->size, PROT_READ,
	    MAP_PRIVATE, obj->fd, (off_t)0)) == MAP_FAILED) {
		bsdar_warnc(bsdar, errno, "can't mmap file: %s", obj->name);
		goto giveup;
	}
	if (close(obj->fd) < 0)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "close failed: %s",
		    obj->name);

	return (obj);

giveup:
	if (close(obj->fd) < 0)
		bsdar_errc(bsdar, EX_SOFTWARE, errno, "close failed: %s",
		    obj->name);
	free(obj->name);
	free(obj);
	return (NULL);
}

/*
 * Free object itself and its associated allocations.
 */
static void
free_obj(struct bsdar *bsdar, struct ar_obj *obj)
{
	if (obj->fd == -1)
		free(obj->maddr);
	else
		if (obj->maddr != NULL && munmap(obj->maddr, obj->size))
			bsdar_warnc(bsdar, errno,
			    "can't munmap file: %s", obj->name);
	free(obj->name);
	free(obj);
}

/*
 * Insert obj to the tail, or before/after the pos obj.
 */
static void
insert_obj(struct bsdar *bsdar, struct ar_obj *obj, struct ar_obj *pos)
{
	if (obj == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, 0, "try to insert a null obj");

	if (pos == NULL || obj == pos)
		/*
		 * If the object to move happens to be the position obj,
		 * or if there is not a pos obj, move it to tail.
		 */
		goto tail;

	if (bsdar->options & AR_B) {
		TAILQ_INSERT_BEFORE(pos, obj, objs);
		return;
	}
	if (bsdar->options & AR_A) {
		TAILQ_INSERT_AFTER(&bsdar->v_obj, pos, obj, objs);
		return;
	}

tail:
	TAILQ_INSERT_TAIL(&bsdar->v_obj, obj, objs);

}

/*
 * Read objects from archive into v_obj list. Note that checkargv is
 * set when read_objs is used to read objects from the target of
 * ADDLIB command (ar script mode), in this case argv array possibly
 * specifies the members ADDLIB want.
 */
static void
read_objs(struct bsdar *bsdar, const char *archive, int checkargv)
{
	struct archive		 *a;
	struct archive_entry	 *entry;
	struct ar_obj		 *obj;
	const char		 *name;
	const char		 *bname;
	char			 *buff;
	char			**av;
	size_t			  size;
	int			  i, r, find;

	if ((a = archive_read_new()) == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, 0, "archive_read_new failed");
	archive_read_support_format_ar(a);
	AC(archive_read_open_filename(a, archive, DEF_BLKSZ));
	for (;;) {
		r = archive_read_next_header(a, &entry);
		if (r == ARCHIVE_FATAL)
			bsdar_errc(bsdar, EX_DATAERR, archive_errno(a), "%s",
			    archive_error_string(a));
		if (r == ARCHIVE_EOF)
			break;
		if (r == ARCHIVE_WARN || r == ARCHIVE_RETRY)
			bsdar_warnc(bsdar, archive_errno(a), "%s",
			    archive_error_string(a));
		if (r == ARCHIVE_RETRY) {
			bsdar_warnc(bsdar, 0, "Retrying...");
			continue;
		}

		name = archive_entry_pathname(entry);

		/*
		 * skip pseudo members.
		 */
		if (strcmp(name, "/") == 0 || strcmp(name, "//") == 0)
			continue;

		/*
		 * If checkargv is set, only read those members specified
		 * in argv.
		 */
		if (checkargv && bsdar->argc > 0) {
			find = 0;
			for(i = 0; i < bsdar->argc; i++) {
				av = &bsdar->argv[i];
				if (*av == NULL)
					continue;
				if ((bname = basename(*av)) == NULL)
					bsdar_errc(bsdar, EX_SOFTWARE, errno,
					    "basename failed");
				if (strcmp(bname, name) != 0)
					continue;

				*av = NULL;
				find = 1;
				break;
			}
			if (!find)
				continue;
		}

		size = archive_entry_size(entry);

		if (size > 0) {
			if ((buff = malloc(size)) == NULL)
				bsdar_errc(bsdar, EX_SOFTWARE, errno,
				    "malloc failed");
			if (archive_read_data(a, buff, size) != (ssize_t)size) {
				bsdar_warnc(bsdar, archive_errno(a), "%s",
				    archive_error_string(a));
				free(buff);
				continue;
			}
		} else
			buff = NULL;

		obj = malloc(sizeof(struct ar_obj));
		if (obj == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
		obj->maddr = buff;
		if ((obj->name = strdup(name)) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "strdup failed");
		obj->size = size;
		obj->uid = archive_entry_uid(entry);
		obj->gid = archive_entry_gid(entry);
		obj->md = archive_entry_mode(entry);
		obj->mtime = archive_entry_mtime(entry);
		obj->dev = 0;
		obj->ino = 0;

		/*
		 * Objects from archive have obj->fd set to -1,
		 * for the ease of cleaning up.
		 */
		obj->fd = -1;
		TAILQ_INSERT_TAIL(&bsdar->v_obj, obj, objs);
	}
	AC(archive_read_close(a));
	AC(archive_read_free(a));
}

/*
 * Determine the constitution of resulting archive.
 */
static int
write_archive(struct bsdar *bsdar, char mode)
{
	struct ar_obj		 *nobj, *obj, *obj_temp, *pos;
	struct stat		  sb;
	const char		 *bname;
	char			**av;
	int			  exitcode, i;

	TAILQ_INIT(&bsdar->v_obj);
	exitcode = EXIT_SUCCESS;
	nobj = NULL;
	pos = NULL;
	memset(&sb, 0, sizeof(sb));

	/*
	 * Test if the specified archive exists, to figure out
	 * whether we are creating one here.
	 */
	if (stat(bsdar->filename, &sb) != 0) {
		if (errno != ENOENT) {
			bsdar_warnc(bsdar, 0, "stat %s failed",
			    bsdar->filename);
			return (EXIT_FAILURE);
		}

		/* We do not create archive in mode 'd', 'm' and 's'.  */
		if (mode != 'r' && mode != 'q') {
			bsdar_warnc(bsdar, 0, "%s: no such file",
			    bsdar->filename);
			return (EXIT_FAILURE);
		}

		/* Issue a warning if -c is not specified when creating. */
		if (!(bsdar->options & AR_C))
			bsdar_warnc(bsdar, 0, "creating %s", bsdar->filename);
		goto new_archive;
	}

	/*
	 * First read members from existing archive.
	 */
	read_objs(bsdar, bsdar->filename, 0);

	/*
	 * For mode 's', no member will be moved, deleted or replaced.
	 */
	if (mode == 's')
		goto write_objs;

	/*
	 * For mode 'q', we don't need to adjust existing members either.
	 * Also, -a, -b and -i are ignored in this mode. New members are
	 * always inserted at tail.
	 */
	if (mode == 'q')
		goto new_archive;

	/*
	 * Mode 'A' adds the contents of another archive to the tail of
	 * current archive. Note that mode 'A' is a special mode for the
	 * ADDLIB command of the ar script mode. Currently there is no
	 * access to this function from the ar command line mode.
	 */
	if (mode == 'A') {
		/*
		 * Read objects from the target archive of ADDLIB command.
		 * If there are members specified in argv, read those members
		 * only, otherwise the entire archive will be read.
		 */
		read_objs(bsdar, bsdar->addlib, 1);
		goto write_objs;
	}

	/*
	 * Try to find the position member specified by user.
	 */
	if (bsdar->options & AR_A || bsdar->options & AR_B) {
		TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
			if (strcmp(obj->name, bsdar->posarg) == 0) {
				pos = obj;
				break;
			}
		}

		/*
		 * If can't find `pos' specified by user,
		 * silently insert objects at tail.
		 */
		if (pos == NULL)
			bsdar->options &= ~(AR_A | AR_B);
	}

	for (i = 0; i < bsdar->argc; i++) {
		av = &bsdar->argv[i];

		TAILQ_FOREACH_SAFE(obj, &bsdar->v_obj, objs, obj_temp) {
			if ((bname = basename(*av)) == NULL)
				bsdar_errc(bsdar, EX_SOFTWARE, errno,
				    "basename failed");
			if (bsdar->options & AR_TR) {
				if (strncmp(bname, obj->name, _TRUNCATE_LEN))
					continue;
			} else
				if (strcmp(bname, obj->name) != 0)
					continue;

			if (mode == 'r') {
				/*
				 * if the new member is not qualified
				 * to replace the old one, skip it.
				 */
				nobj = create_obj_from_file(bsdar, *av,
				    obj->mtime);
				if (nobj == NULL) {
					exitcode = EXIT_FAILURE;
					goto skip_obj;
				}
			}

			if (bsdar->options & AR_V)
				(void)fprintf(stdout, "%c - %s\n", mode,
				    *av);

			TAILQ_REMOVE(&bsdar->v_obj, obj, objs);
			if (mode == 'd' || mode == 'r')
				free_obj(bsdar, obj);

			if (mode == 'm')
				insert_obj(bsdar, obj, pos);
			if (mode == 'r')
				insert_obj(bsdar, nobj, pos);

		skip_obj:
			*av = NULL;
			break;
		}

	}

new_archive:
	/*
	 * When operating in mode 'r', directly add those user specified
	 * objects which do not exist in current archive. When operating
	 * in mode 'q', all objects specified in command line args are
	 * appended to the archive, without comparing with existing ones.
	 */
	for (i = 0; i < bsdar->argc; i++) {
		av = &bsdar->argv[i];
		if (*av != NULL && (mode == 'r' || mode == 'q')) {
			nobj = create_obj_from_file(bsdar, *av, 0);
			if (nobj == NULL) {
				exitcode = EXIT_FAILURE;
				*av = NULL;
				continue;
			}
			insert_obj(bsdar, nobj, pos);
			if (bsdar->options & AR_V && nobj != NULL)
				(void)fprintf(stdout, "a - %s\n", *av);
			*av = NULL;
		}
	}

write_objs:
	write_objs(bsdar);
	write_cleanup(bsdar);

	return (exitcode);
}

/*
 * Memory cleaning up.
 */
static void
write_cleanup(struct bsdar *bsdar)
{
	struct ar_obj		*obj, *obj_temp;

	TAILQ_FOREACH_SAFE(obj, &bsdar->v_obj, objs, obj_temp) {
		TAILQ_REMOVE(&bsdar->v_obj, obj, objs);
		free_obj(bsdar, obj);
	}

	free(bsdar->as);
	free(bsdar->s_so);
	free(bsdar->s_sn);
	bsdar->as = NULL;
	bsdar->s_so = NULL;
	bsdar->s_so_max = 0;
	bsdar->s_sn = NULL;
}

/*
 * Fault in the buffer prior to writing as a workaround for poor performance
 * due to interaction with kernel fs deadlock avoidance code. See the comment
 * above vn_io_fault_doio() in sys/kern/vfs_vnops.c for details of the issue.
 */
static void
prefault_buffer(const char *buf, size_t s)
{
	volatile const char *p;
	size_t page_size;

	if (s == 0)
		return;
	page_size = sysconf(_SC_PAGESIZE);
	for (p = buf; p < buf + s; p += page_size)
		*p;
	/*
	 * Ensure we touch the last page as well, in case the buffer is not
	 * page-aligned.
	 */
	*(volatile const char *)(buf + s - 1);
}

/*
 * Wrapper for archive_write_data().
 */
static void
write_data(struct bsdar *bsdar, struct archive *a, const void *buf, size_t s)
{
	ssize_t written;

	prefault_buffer(buf, s);
	while (s > 0) {
		written = archive_write_data(a, buf, s);
		if (written < 0)
			bsdar_errc(bsdar, EX_SOFTWARE, archive_errno(a), "%s",
			    archive_error_string(a));
		buf = (const char *)buf + written;
		s -= written;
	}
}

/*
 * Write the resulting archive members.
 */
static void
write_objs(struct bsdar *bsdar)
{
	struct ar_obj		*obj;
	struct archive		*a;
	struct archive_entry	*entry;
	size_t s_sz;		/* size of archive symbol table. */
	size_t pm_sz;		/* size of pseudo members */
	size_t w_sz;		/* size of words in symbol table */
	size_t			 i;
	uint64_t		 nr;
	uint32_t		 nr32;

	if (elf_version(EV_CURRENT) == EV_NONE)
		bsdar_errc(bsdar, EX_SOFTWARE, 0,
		    "ELF library initialization failed: %s", elf_errmsg(-1));

	bsdar->rela_off = 0;

	/* Create archive symbol table and archive string table, if need. */
	TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
		if (!(bsdar->options & AR_SS) && obj->maddr != NULL)
			create_symtab_entry(bsdar, obj->maddr, obj->size);
		if (strlen(obj->name) > _MAXNAMELEN_SVR4)
			add_to_ar_str_table(bsdar, obj->name);
		bsdar->rela_off += _ARHDR_LEN + obj->size + obj->size % 2;
	}

	/*
	 * Pad the symbol name string table. It is treated specially because
	 * symbol name table should be padded by a '\0', not the common '\n'
	 * for other members. The size of sn table includes the pad bit.
	 */
	if (bsdar->s_cnt != 0 && bsdar->s_sn_sz % 2 != 0)
		bsdar->s_sn[bsdar->s_sn_sz++] = '\0';

	/*
	 * Archive string table is padded by a "\n" as the normal members.
	 * The difference is that the size of archive string table counts
	 * in the pad bit, while normal members' size fields do not.
	 */
	if (bsdar->as != NULL && bsdar->as_sz % 2 != 0)
		bsdar->as[bsdar->as_sz++] = '\n';

	/*
	 * If there is a symbol table, calculate the size of pseudo members,
	 * convert previously stored relative offsets to absolute ones, and
	 * then make them Big Endian.
	 *
	 * absolute_offset = htobe32(relative_offset + size_of_pseudo_members)
	 */
	w_sz = sizeof(uint32_t);
	if (bsdar->s_cnt != 0) {
		s_sz = (bsdar->s_cnt + 1) * sizeof(uint32_t) + bsdar->s_sn_sz;
		pm_sz = _ARMAG_LEN + (_ARHDR_LEN + s_sz);
		if (bsdar->as != NULL)
			pm_sz += _ARHDR_LEN + bsdar->as_sz;
		/* Use the 64-bit word size format if necessary. */
		if (bsdar->s_so_max > UINT32_MAX - pm_sz) {
			w_sz = sizeof(uint64_t);
			pm_sz -= s_sz;
			s_sz = (bsdar->s_cnt + 1) * sizeof(uint64_t) +
			    bsdar->s_sn_sz;
			pm_sz += s_sz;
			/* Convert to big-endian. */
			for (i = 0; i < bsdar->s_cnt; i++)
				bsdar->s_so[i] =
				    htobe64(bsdar->s_so[i] + pm_sz);
		} else {
			/*
			 * Convert to big-endian and shuffle in-place to
			 * the front of the allocation. XXX UB
			 */
			for (i = 0; i < bsdar->s_cnt; i++)
				((uint32_t *)(bsdar->s_so))[i] =
				    htobe32(bsdar->s_so[i] + pm_sz);
		}
	}

	if ((a = archive_write_new()) == NULL)
		bsdar_errc(bsdar, EX_SOFTWARE, 0, "archive_write_new failed");

	archive_write_set_format_ar_svr4(a);

	AC(archive_write_open_filename(a, bsdar->filename));

	/*
	 * write the archive symbol table, if there is one.
	 * If options -s is explicitly specified or we are invoked
	 * as ranlib, write the symbol table even if it is empty.
	 */
	if ((bsdar->s_cnt != 0 && !(bsdar->options & AR_SS)) ||
	    bsdar->options & AR_S) {
		entry = archive_entry_new();
		if (entry == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, 0,
			    "archive_entry_new failed");
		if (w_sz == sizeof(uint64_t))
			archive_entry_copy_pathname(entry, "/SYM64/");
		else
			archive_entry_copy_pathname(entry, "/");
		if ((bsdar->options & AR_D) == 0)
			archive_entry_set_mtime(entry, time(NULL), 0);
		archive_entry_set_size(entry, (bsdar->s_cnt + 1) * w_sz +
		    bsdar->s_sn_sz);
		AC(archive_write_header(a, entry));
		if (w_sz == sizeof(uint64_t)) {
			nr = htobe64(bsdar->s_cnt);
			write_data(bsdar, a, &nr, sizeof(nr));
		} else {
			nr32 = htobe32((uint32_t)bsdar->s_cnt);
			write_data(bsdar, a, &nr32, sizeof(nr32));
		}
		write_data(bsdar, a, bsdar->s_so, w_sz * bsdar->s_cnt);
		write_data(bsdar, a, bsdar->s_sn, bsdar->s_sn_sz);
		archive_entry_free(entry);
	}

	/* write the archive string table, if any. */
	if (bsdar->as != NULL) {
		entry = archive_entry_new();
		if (entry == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, 0,
			    "archive_entry_new failed");
		archive_entry_copy_pathname(entry, "//");
		archive_entry_set_size(entry, bsdar->as_sz);
		AC(archive_write_header(a, entry));
		write_data(bsdar, a, bsdar->as, bsdar->as_sz);
		archive_entry_free(entry);
	}

	/* write normal members. */
	TAILQ_FOREACH(obj, &bsdar->v_obj, objs) {
		entry = archive_entry_new();
		if (entry == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, 0,
			    "archive_entry_new failed");
		archive_entry_copy_pathname(entry, obj->name);
		archive_entry_set_uid(entry, obj->uid);
		archive_entry_set_gid(entry, obj->gid);
		archive_entry_set_mode(entry, obj->md);
		archive_entry_set_size(entry, obj->size);
		archive_entry_set_mtime(entry, obj->mtime, 0);
		archive_entry_set_dev(entry, obj->dev);
		archive_entry_set_ino(entry, obj->ino);
		archive_entry_set_filetype(entry, AE_IFREG);
		AC(archive_write_header(a, entry));
		write_data(bsdar, a, obj->maddr, obj->size);
		archive_entry_free(entry);
	}

	AC(archive_write_close(a));
	AC(archive_write_free(a));
}

/*
 * Extract global symbols from ELF binary members.
 */
static void
create_symtab_entry(struct bsdar *bsdar, void *maddr, size_t size)
{
	Elf		*e;
	Elf_Scn		*scn;
	GElf_Shdr	 shdr;
	GElf_Sym	 sym;
	Elf_Data	*data;
	char		*name;
	size_t		 n, shstrndx;
	int		 elferr, tabndx, len, i;

	if ((e = elf_memory(maddr, size)) == NULL) {
		bsdar_warnc(bsdar, 0, "elf_memory() failed: %s",
		     elf_errmsg(-1));
		return;
	}
	if (elf_kind(e) != ELF_K_ELF) {
		/* Silently ignore non-elf member. */
		elf_end(e);
		return;
	}
	if (elf_getshstrndx(e, &shstrndx) == 0) {
		bsdar_warnc(bsdar, EX_SOFTWARE, 0, "elf_getshstrndx failed: %s",
		     elf_errmsg(-1));
		elf_end(e);
		return;
	}

	tabndx = -1;
	scn = NULL;
	while ((scn = elf_nextscn(e, scn)) != NULL) {
		if (gelf_getshdr(scn, &shdr) != &shdr) {
			bsdar_warnc(bsdar, 0,
			    "elf_getshdr failed: %s", elf_errmsg(-1));
			continue;
		}
		if ((name = elf_strptr(e, shstrndx, shdr.sh_name)) == NULL) {
			bsdar_warnc(bsdar, 0,
			    "elf_strptr failed: %s", elf_errmsg(-1));
			continue;
		}
		if (strcmp(name, ".strtab") == 0) {
			tabndx = elf_ndxscn(scn);
			break;
		}
	}
	elferr = elf_errno();
	if (elferr != 0)
		bsdar_warnc(bsdar, 0, "elf_nextscn failed: %s",
		     elf_errmsg(elferr));
	if (tabndx == -1) {
		bsdar_warnc(bsdar, 0, "can't find .strtab section");
		elf_end(e);
		return;
	}

	scn = NULL;
	while ((scn = elf_nextscn(e, scn)) != NULL) {
		if (gelf_getshdr(scn, &shdr) != &shdr) {
			bsdar_warnc(bsdar, EX_SOFTWARE, 0,
			    "elf_getshdr failed: %s", elf_errmsg(-1));
			continue;
		}
		if (shdr.sh_type != SHT_SYMTAB)
			continue;

		data = NULL;
		n = 0;
		while (n < shdr.sh_size &&
		    (data = elf_getdata(scn, data)) != NULL) {
			len = data->d_size / shdr.sh_entsize;
			for (i = 0; i < len; i++) {
				if (gelf_getsym(data, i, &sym) != &sym) {
					bsdar_warnc(bsdar, EX_SOFTWARE, 0,
					    "gelf_getsym failed: %s",
					     elf_errmsg(-1));
					continue;
				}

				/* keep only global or weak symbols */
				if (GELF_ST_BIND(sym.st_info) != STB_GLOBAL &&
				    GELF_ST_BIND(sym.st_info) != STB_WEAK)
					continue;

				/* keep only defined symbols */
				if (sym.st_shndx == SHN_UNDEF)
					continue;

				if ((name = elf_strptr(e, tabndx,
				    sym.st_name)) == NULL) {
					bsdar_warnc(bsdar, EX_SOFTWARE, 0,
					    "elf_strptr failed: %s",
					     elf_errmsg(-1));
					continue;
				}

				add_to_ar_sym_table(bsdar, name);
			}
		}
	}
	elferr = elf_errno();
	if (elferr != 0)
		bsdar_warnc(bsdar, EX_SOFTWARE, 0, "elf_nextscn failed: %s",
		     elf_errmsg(elferr));

	elf_end(e);
}

/*
 * Append to the archive string table buffer.
 */
static void
add_to_ar_str_table(struct bsdar *bsdar, const char *name)
{

	if (bsdar->as == NULL) {
		bsdar->as_cap = _INIT_AS_CAP;
		bsdar->as_sz = 0;
		if ((bsdar->as = malloc(bsdar->as_cap)) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
	}

	/*
	 * The space required for holding one member name in as table includes:
	 * strlen(name) + (1 for '/') + (1 for '\n') + (possibly 1 for padding).
	 */
	while (bsdar->as_sz + strlen(name) + 3 > bsdar->as_cap) {
		bsdar->as_cap *= 2;
		bsdar->as = realloc(bsdar->as, bsdar->as_cap);
		if (bsdar->as == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "realloc failed");
	}
	strncpy(&bsdar->as[bsdar->as_sz], name, strlen(name));
	bsdar->as_sz += strlen(name);
	bsdar->as[bsdar->as_sz++] = '/';
	bsdar->as[bsdar->as_sz++] = '\n';
}

/*
 * Append to the archive symbol table buffer.
 */
static void
add_to_ar_sym_table(struct bsdar *bsdar, const char *name)
{

	if (bsdar->s_so == NULL) {
		if ((bsdar->s_so = malloc(_INIT_SYMOFF_CAP)) ==
		    NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
		bsdar->s_so_cap = _INIT_SYMOFF_CAP;
		bsdar->s_cnt = 0;
	}

	if (bsdar->s_sn == NULL) {
		if ((bsdar->s_sn = malloc(_INIT_SYMNAME_CAP)) == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "malloc failed");
		bsdar->s_sn_cap = _INIT_SYMNAME_CAP;
		bsdar->s_sn_sz = 0;
	}

	if (bsdar->s_cnt * sizeof(uint64_t) >= bsdar->s_so_cap) {
		bsdar->s_so_cap *= 2;
		bsdar->s_so = realloc(bsdar->s_so, bsdar->s_so_cap);
		if (bsdar->s_so == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "realloc failed");
	}
	bsdar->s_so[bsdar->s_cnt] = bsdar->rela_off;
	if ((uint64_t)bsdar->rela_off > bsdar->s_so_max)
		bsdar->s_so_max = (uint64_t)bsdar->rela_off;
	bsdar->s_cnt++;

	/*
	 * The space required for holding one symbol name in sn table includes:
	 * strlen(name) + (1 for '\n') + (possibly 1 for padding).
	 */
	while (bsdar->s_sn_sz + strlen(name) + 2 > bsdar->s_sn_cap) {
		bsdar->s_sn_cap *= 2;
		bsdar->s_sn = realloc(bsdar->s_sn, bsdar->s_sn_cap);
		if (bsdar->s_sn == NULL)
			bsdar_errc(bsdar, EX_SOFTWARE, errno, "realloc failed");
	}
	strncpy(&bsdar->s_sn[bsdar->s_sn_sz], name, strlen(name));
	bsdar->s_sn_sz += strlen(name);
	bsdar->s_sn[bsdar->s_sn_sz++] = '\0';
}

Return to bug 257599

Lines 1-129 Link Here

(-)b/usr.bin/ar/ar.h (-10 / +10 lines)
1	/*-	1	/*-
2	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD	2	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3	*	3	*
4	* Copyright (c) 2007 Kai Wang	4	* Copyright (c) 2007 Kai Wang
5	* All rights reserved.	5	* All rights reserved.
6	*	6	*
7	* Redistribution and use in source and binary forms, with or without	7	* Redistribution and use in source and binary forms, with or without
8	* modification, are permitted provided that the following conditions	8	* modification, are permitted provided that the following conditions
9	* are met:	9	* are met:
10	* 1. Redistributions of source code must retain the above copyright	10	* 1. Redistributions of source code must retain the above copyright
11	* notice, this list of conditions and the following disclaimer.	11	* notice, this list of conditions and the following disclaimer.
12	* 2. Redistributions in binary form must reproduce the above copyright	12	* 2. Redistributions in binary form must reproduce the above copyright
13	* notice, this list of conditions and the following disclaimer in the	13	* notice, this list of conditions and the following disclaimer in the
14	* documentation and/or other materials provided with the distribution.	14	* documentation and/or other materials provided with the distribution.
15	*	15	*
16	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND	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	17	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	18	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE	19	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL	20	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS	21	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)	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	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	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	25	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26	* SUCH DAMAGE.	26	* SUCH DAMAGE.
27	*	27	*
28	* $FreeBSD$	28	* $FreeBSD$
29	*/	29	*/
30		30
31	#define BSDAR_VERSION "1.1.0"	31	#define BSDAR_VERSION "1.1.0"
32		32
33	/*	33	/*
34	* ar(1) options.	34	* ar(1) options.
35	*/	35	*/
36	#define AR_A 0x0001 /* position-after */	36	#define AR_A 0x0001 /* position-after */
37	#define AR_B 0x0002 /* position-before */	37	#define AR_B 0x0002 /* position-before */
38	#define AR_C 0x0004 /* creating new archive */	38	#define AR_C 0x0004 /* creating new archive */
39	#define AR_CC 0x0008 /* do not overwrite when extracting */	39	#define AR_CC 0x0008 /* do not overwrite when extracting */
40	#define AR_J 0x0010 /* bzip2 compression */	40	#define AR_J 0x0010 /* bzip2 compression */
41	#define AR_O 0x0020 /* preserve original mtime when extracting */	41	#define AR_O 0x0020 /* preserve original mtime when extracting */
42	#define AR_S 0x0040 /* write archive symbol table */	42	#define AR_S 0x0040 /* write archive symbol table */
43	#define AR_SS 0x0080 /* do not write archive symbol table */	43	#define AR_SS 0x0080 /* do not write archive symbol table */
44	#define AR_TR 0x0100 /* only keep first 15 chars for member name */	44	#define AR_TR 0x0100 /* only keep first 15 chars for member name */
45	#define AR_U 0x0200 /* only extract or update newer members.*/	45	#define AR_U 0x0200 /* only extract or update newer members.*/
46	#define AR_V 0x0400 /* verbose mode */	46	#define AR_V 0x0400 /* verbose mode */
47	#define AR_Z 0x0800 /* gzip compression */	47	#define AR_Z 0x0800 /* gzip compression */
48	#define AR_D 0x1000 /* insert dummy mode, mtime, uid and gid */	48	#define AR_D 0x1000 /* insert dummy mode, mtime, uid and gid */
49		49
50	#define DEF_BLKSZ 10240 /* default block size */	50	#define DEF_BLKSZ 10240 /* default block size */
51		51
52	/*	52	/*
53	* Convenient wrapper for general libarchive error handling.	53	* Convenient wrapper for general libarchive error handling.
54	*/	54	*/
55	#define AC(CALL) do { \	55	#define AC(CALL) do { \
56	if ((CALL)) \	56	if ((CALL)) \
57	bsdar_errc(bsdar, EX_SOFTWARE, archive_errno(a), "%s", \	57	bsdar_errc(bsdar, EXIT_FAILURE, archive_errno(a), "%s", \
58	archive_error_string(a)); \	58	archive_error_string(a)); \
59	} while (0)	59	} while (0)
60		60
61	/*	61	/*
62	* In-memory representation of archive member(object).	62	* In-memory representation of archive member(object).
63	*/	63	*/
64	struct ar_obj {	64	struct ar_obj {
65	char name; / member name */	65	char name; / member name */
66	void maddr; / mmap start address */	66	void maddr; / mmap start address */
67	uid_t uid; /* user id */	67	uid_t uid; /* user id */
68	gid_t gid; /* group id */	68	gid_t gid; /* group id */
69	mode_t md; /* octal file permissions */	69	mode_t md; /* octal file permissions */
70	size_t size; /* member size */	70	size_t size; /* member size */
71	time_t mtime; /* modification time */	71	time_t mtime; /* modification time */
72	int fd; /* file descriptor */	72	int fd; /* file descriptor */
73	dev_t dev; /* inode's device */	73	dev_t dev; /* inode's device */
74	ino_t ino; /* inode's number */	74	ino_t ino; /* inode's number */
75		75
76	TAILQ_ENTRY(ar_obj) objs;	76	TAILQ_ENTRY(ar_obj) objs;
77	};	77	};
78		78
79	/*	79	/*
80	* Structure encapsulates the "global" data for "ar" program.	80	* Structure encapsulates the "global" data for "ar" program.
81	*/	81	*/
82	struct bsdar {	82	struct bsdar {
83	const char filename; / archive name. */	83	const char filename; / archive name. */
84	const char addlib; / target of ADDLIB. */	84	const char addlib; / target of ADDLIB. */
85	const char posarg; / position arg for modifiers -a, -b. */	85	const char posarg; / position arg for modifiers -a, -b. */
86	char mode; /* program mode */	86	char mode; /* program mode */
87	int options; /* command line options */	87	int options; /* command line options */
88		88
89	const char progname; / program name */	89	const char progname; / program name */
90	int argc;	90	int argc;
91	char **argv;	91	char **argv;
92		92
93	/*	93	/*
94	* Fields for the archive string table.	94	* Fields for the archive string table.
95	*/	95	*/
96	char as; / buffer for archive string table. */	96	char as; / buffer for archive string table. */
97	size_t as_sz; /* current size of as table. */	97	size_t as_sz; /* current size of as table. */
98	size_t as_cap; /* capacity of as table buffer. */	98	size_t as_cap; /* capacity of as table buffer. */
99		99
100	/*	100	/*
101	* Fields for the archive symbol table.	101	* Fields for the archive symbol table.
102	*/	102	*/
103	uint64_t s_cnt; /* current number of symbols. */	103	uint64_t s_cnt; /* current number of symbols. */
104	uint64_t s_so; / symbol offset table. */	104	uint64_t s_so; / symbol offset table. */
105	uint64_t s_so_max; /* maximum symbol offset. */	105	uint64_t s_so_max; /* maximum symbol offset. */
106	size_t s_so_cap; /* capacity of so table buffer. */	106	size_t s_so_cap; /* capacity of so table buffer. */
107		107
108	char s_sn; / symbol name table */	108	char s_sn; / symbol name table */
109	size_t s_sn_cap; /* capacity of sn table buffer. */	109	size_t s_sn_cap; /* capacity of sn table buffer. */
110	size_t s_sn_sz; /* current size of sn table. */	110	size_t s_sn_sz; /* current size of sn table. */
111	/* Current member's offset (relative to the end of pseudo members.) */	111	/* Current member's offset (relative to the end of pseudo members.) */
112	off_t rela_off;	112	off_t rela_off;
113		113
114	TAILQ_HEAD(, ar_obj) v_obj; /* object(member) list */	114	TAILQ_HEAD(, ar_obj) v_obj; /* object(member) list */
115	};	115	};
116		116
117	void bsdar_errc(struct bsdar *, int _eval, int _code,	117	void bsdar_errc(struct bsdar *, int _eval, int _code,
118	const char *fmt, ...) __dead2;	118	const char *fmt, ...) __dead2;
119	void bsdar_warnc(struct bsdar , int _code, const char fmt, ...);	119	void bsdar_warnc(struct bsdar , int _code, const char fmt, ...);
120	void ar_mode_d(struct bsdar *bsdar);	120	int ar_mode_d(struct bsdar *bsdar);
121	void ar_mode_m(struct bsdar *bsdar);	121	int ar_mode_m(struct bsdar *bsdar);
122	void ar_mode_p(struct bsdar *bsdar);	122	int ar_mode_p(struct bsdar *bsdar);
123	void ar_mode_q(struct bsdar *bsdar);	123	int ar_mode_q(struct bsdar *bsdar);
124	void ar_mode_r(struct bsdar *bsdar);	124	int ar_mode_r(struct bsdar *bsdar);
125	void ar_mode_s(struct bsdar *bsdar);	125	int ar_mode_s(struct bsdar *bsdar);
126	void ar_mode_t(struct bsdar *bsdar);	126	int ar_mode_t(struct bsdar *bsdar);
127	void ar_mode_x(struct bsdar *bsdar);	127	int ar_mode_x(struct bsdar *bsdar);
128	void ar_mode_A(struct bsdar *bsdar);	128	int ar_mode_A(struct bsdar *bsdar);
129	void ar_mode_script(struct bsdar *ar);	129	void ar_mode_script(struct bsdar *ar);

Lines 1-216 Link Here

(-)b/usr.bin/ar/read.c (-13 / +19 lines)
1	/*-	1	/*-
2	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD	2	* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3	*	3	*
4	* Copyright (c) 2007 Kai Wang	4	* Copyright (c) 2007 Kai Wang
5	* Copyright (c) 2007 Tim Kientzle	5	* Copyright (c) 2007 Tim Kientzle
6	* All rights reserved.	6	* All rights reserved.
7	*	7	*
8	* Redistribution and use in source and binary forms, with or without	8	* Redistribution and use in source and binary forms, with or without
9	* modification, are permitted provided that the following conditions	9	* modification, are permitted provided that the following conditions
10	* are met:	10	* are met:
11	* 1. Redistributions of source code must retain the above copyright	11	* 1. Redistributions of source code must retain the above copyright
12	* notice, this list of conditions and the following disclaimer.	12	* notice, this list of conditions and the following disclaimer.
13	* 2. Redistributions in binary form must reproduce the above copyright	13	* 2. Redistributions in binary form must reproduce the above copyright
14	* notice, this list of conditions and the following disclaimer in the	14	* notice, this list of conditions and the following disclaimer in the
15	* documentation and/or other materials provided with the distribution.	15	* documentation and/or other materials provided with the distribution.
16	*	16	*
17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND	17	* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27	* SUCH DAMAGE.	27	* SUCH DAMAGE.
28	*/	28	*/
29		29
30	#include <sys/cdefs.h>	30	#include <sys/cdefs.h>
31	__FBSDID("$FreeBSD$");	31	__FBSDID("$FreeBSD$");
32		32
33	#include <sys/queue.h>	33	#include <sys/queue.h>
34	#include <sys/stat.h>	34	#include <sys/stat.h>
35	#include <archive.h>	35	#include <archive.h>
36	#include <archive_entry.h>	36	#include <archive_entry.h>
37	#include <errno.h>	37	#include <errno.h>
38	#include <libgen.h>	38	#include <libgen.h>
39	#include <stdio.h>	39	#include <stdio.h>
		40	#include <stdlib.h>
40	#include <string.h>	41	#include <string.h>
41	#include <sysexits.h>
42		42
43	#include "ar.h"	43	#include "ar.h"
44		44
45	static void read_archive(struct bsdar *bsdar, char mode);	45	static int read_archive(struct bsdar *bsdar, char mode);
46		46
47	void	47	int
48	ar_mode_p(struct bsdar *bsdar)	48	ar_mode_p(struct bsdar *bsdar)
49	{	49	{
50		50
51	read_archive(bsdar, 'p');	51	return (read_archive(bsdar, 'p'));
52	}	52	}
53		53
54	void	54	int
55	ar_mode_t(struct bsdar *bsdar)	55	ar_mode_t(struct bsdar *bsdar)
56	{	56	{
57		57
58	read_archive(bsdar, 't');	58	return (read_archive(bsdar, 't'));
59	}	59	}
60		60
61	void	61	int
62	ar_mode_x(struct bsdar *bsdar)	62	ar_mode_x(struct bsdar *bsdar)
63	{	63	{
64		64
65	read_archive(bsdar, 'x');	65	return (read_archive(bsdar, 'x'));
66	}	66	}
67		67
68	/*	68	/*
69	* Handle read modes: 'x', 't' and 'p'.	69	* Handle read modes: 'x', 't' and 'p'.
70	*/	70	*/
71	static void	71	static int
72	read_archive(struct bsdar *bsdar, char mode)	72	read_archive(struct bsdar *bsdar, char mode)
73	{	73	{
74	struct archive *a;	74	struct archive *a;
75	struct archive_entry *entry;	75	struct archive_entry *entry;
76	struct stat sb;	76	struct stat sb;
77	struct tm *tp;	77	struct tm *tp;
78	const char *bname;	78	const char *bname;
79	const char *name;	79	const char *name;
80	mode_t md;	80	mode_t md;
81	size_t size;	81	size_t size;
82	time_t mtime;	82	time_t mtime;
83	uid_t uid;	83	uid_t uid;
84	gid_t gid;	84	gid_t gid;
85	char **av;	85	char **av;
86	char buf[25];	86	char buf[25];
87	char find;	87	char find;
88	int flags, r, i;	88	int exitcode, flags, r, i;
89		89
90	if ((a = archive_read_new()) == NULL)	90	if ((a = archive_read_new()) == NULL)
91	bsdar_errc(bsdar, EX_SOFTWARE, 0, "archive_read_new failed");	91	bsdar_errc(bsdar, EXIT_FAILURE, 0, "archive_read_new failed");
92	archive_read_support_format_ar(a);	92	archive_read_support_format_ar(a);
93	AC(archive_read_open_filename(a, bsdar->filename, DEF_BLKSZ));	93	AC(archive_read_open_filename(a, bsdar->filename, DEF_BLKSZ));
94		94
		95	exitcode = EXIT_SUCCESS;
		96
95	for (;;) {	97	for (;;) {
96	r = archive_read_next_header(a, &entry);	98	r = archive_read_next_header(a, &entry);
97	if (r == ARCHIVE_WARN \|\| r == ARCHIVE_RETRY \|\|	99	if (r == ARCHIVE_WARN \|\| r == ARCHIVE_RETRY \|\|
98	r == ARCHIVE_FATAL)	100	r == ARCHIVE_FATAL)
99	bsdar_warnc(bsdar, archive_errno(a), "%s",	101	bsdar_warnc(bsdar, archive_errno(a), "%s",
100	archive_error_string(a));	102	archive_error_string(a));
101	if (r == ARCHIVE_EOF \|\| r == ARCHIVE_FATAL)	103	if (r == ARCHIVE_EOF \|\| r == ARCHIVE_FATAL)
102	break;	104	break;
103	if (r == ARCHIVE_RETRY) {	105	if (r == ARCHIVE_RETRY) {
104	bsdar_warnc(bsdar, 0, "Retrying...");	106	bsdar_warnc(bsdar, 0, "Retrying...");
105	continue;	107	continue;
106	}	108	}
107		109
108	if ((name = archive_entry_pathname(entry)) == NULL)	110	if ((name = archive_entry_pathname(entry)) == NULL)
109	break;	111	break;
110		112
111	/* Skip pseudo members. */	113	/* Skip pseudo members. */
112	if (strcmp(name, "/") == 0 \|\| strcmp(name, "//") == 0 \|\|	114	if (strcmp(name, "/") == 0 \|\| strcmp(name, "//") == 0 \|\|
113	strcmp(name, "/SYM64/") == 0)	115	strcmp(name, "/SYM64/") == 0)
114	continue;	116	continue;
115		117
116	if (bsdar->argc > 0) {	118	if (bsdar->argc > 0) {
117	find = 0;	119	find = 0;
118	for(i = 0; i < bsdar->argc; i++) {	120	for(i = 0; i < bsdar->argc; i++) {
119	av = &bsdar->argv[i];	121	av = &bsdar->argv[i];
120	if (*av == NULL)	122	if (*av == NULL)
121	continue;	123	continue;
122	if ((bname = basename(*av)) == NULL)	124	if ((bname = basename(*av)) == NULL)
123	bsdar_errc(bsdar, EX_SOFTWARE, errno,	125	bsdar_errc(bsdar, EXIT_FAILURE, errno,
124	"basename failed");	126	"basename failed");
125	if (strcmp(bname, name) != 0)	127	if (strcmp(bname, name) != 0)
126	continue;	128	continue;
127		129
128	*av = NULL;	130	*av = NULL;
129	find = 1;	131	find = 1;
130	break;	132	break;
131	}	133	}
132	if (!find)	134	if (!find)
133	continue;	135	continue;
134	}	136	}
135		137
136	if (mode == 't') {	138	if (mode == 't') {
137	if (bsdar->options & AR_V) {	139	if (bsdar->options & AR_V) {
138	md = archive_entry_mode(entry);	140	md = archive_entry_mode(entry);
139	uid = archive_entry_uid(entry);	141	uid = archive_entry_uid(entry);
140	gid = archive_entry_gid(entry);	142	gid = archive_entry_gid(entry);
141	size = archive_entry_size(entry);	143	size = archive_entry_size(entry);
142	mtime = archive_entry_mtime(entry);	144	mtime = archive_entry_mtime(entry);
143	(void)strmode(md, buf);	145	(void)strmode(md, buf);
144	(void)fprintf(stdout, "%s %6d/%-6d %8ju ",	146	(void)fprintf(stdout, "%s %6d/%-6d %8ju ",
145	buf + 1, uid, gid, (uintmax_t)size);	147	buf + 1, uid, gid, (uintmax_t)size);
146	tp = localtime(&mtime);	148	tp = localtime(&mtime);
147	(void)strftime(buf, sizeof(buf),	149	(void)strftime(buf, sizeof(buf),
148	"%b %e %H:%M %Y", tp);	150	"%b %e %H:%M %Y", tp);
149	(void)fprintf(stdout, "%s %s", buf, name);	151	(void)fprintf(stdout, "%s %s", buf, name);
150	} else	152	} else
151	(void)fprintf(stdout, "%s", name);	153	(void)fprintf(stdout, "%s", name);
152	r = archive_read_data_skip(a);	154	r = archive_read_data_skip(a);
153	if (r == ARCHIVE_WARN \|\| r == ARCHIVE_RETRY \|\|	155	if (r == ARCHIVE_WARN \|\| r == ARCHIVE_RETRY \|\|
154	r == ARCHIVE_FATAL) {	156	r == ARCHIVE_FATAL) {
155	(void)fprintf(stdout, "\n");	157	(void)fprintf(stdout, "\n");
156	bsdar_warnc(bsdar, archive_errno(a), "%s",	158	bsdar_warnc(bsdar, archive_errno(a), "%s",
157	archive_error_string(a));	159	archive_error_string(a));
158	}	160	}
159		161
160	if (r == ARCHIVE_FATAL)	162	if (r == ARCHIVE_FATAL)
161	break;	163	break;
162		164
163	(void)fprintf(stdout, "\n");	165	(void)fprintf(stdout, "\n");
164	} else {	166	} else {
165	/* mode == 'x' \|\| mode = 'p' */	167	/* mode == 'x' \|\| mode = 'p' */
166	if (mode == 'p') {	168	if (mode == 'p') {
167	if (bsdar->options & AR_V) {	169	if (bsdar->options & AR_V) {
168	(void)fprintf(stdout, "\n<%s>\n\n",	170	(void)fprintf(stdout, "\n<%s>\n\n",
169	name);	171	name);
170	fflush(stdout);	172	fflush(stdout);
171	}	173	}
172	r = archive_read_data_into_fd(a, 1);	174	r = archive_read_data_into_fd(a, 1);
173	} else {	175	} else {
174	/* mode == 'x' */	176	/* mode == 'x' */
175	if (stat(name, &sb) != 0) {	177	if (stat(name, &sb) != 0) {
176	if (errno != ENOENT) {	178	if (errno != ENOENT) {
177	bsdar_warnc(bsdar, 0,	179	bsdar_warnc(bsdar, 0,
178	"stat %s failed",	180	"stat %s failed",
179	bsdar->filename);	181	bsdar->filename);
180	continue;	182	continue;
181	}	183	}
182	} else {	184	} else {
183	/* stat success, file exist */	185	/* stat success, file exist */
184	if (bsdar->options & AR_CC)	186	if (bsdar->options & AR_CC)
185	continue;	187	continue;
186	if (bsdar->options & AR_U &&	188	if (bsdar->options & AR_U &&
187	archive_entry_mtime(entry) <=	189	archive_entry_mtime(entry) <=
188	sb.st_mtime)	190	sb.st_mtime)
189	continue;	191	continue;
190	}	192	}
191		193
192	if (bsdar->options & AR_V)	194	if (bsdar->options & AR_V)
193	(void)fprintf(stdout, "x - %s\n", name);	195	(void)fprintf(stdout, "x - %s\n", name);
194	/* Disallow absolute paths. */	196	/* Disallow absolute paths. */
195	if (name[0] == '/') {	197	if (name[0] == '/') {
196	bsdar_warnc(bsdar, 0,	198	bsdar_warnc(bsdar, 0,
197	"Absolute path '%s'", name);	199	"Absolute path '%s'", name);
198	continue;	200	continue;
199	}	201	}
200	/* Basic path security flags. */	202	/* Basic path security flags. */
201	flags = ARCHIVE_EXTRACT_SECURE_SYMLINKS \|	203	flags = ARCHIVE_EXTRACT_SECURE_SYMLINKS \|
202	ARCHIVE_EXTRACT_SECURE_NODOTDOT;	204	ARCHIVE_EXTRACT_SECURE_NODOTDOT;
203	if (bsdar->options & AR_O)	205	if (bsdar->options & AR_O)
204	flags \|= ARCHIVE_EXTRACT_TIME;	206	flags \|= ARCHIVE_EXTRACT_TIME;
205		207
206	r = archive_read_extract(a, entry, flags);	208	r = archive_read_extract(a, entry, flags);
207	}	209	}
208		210
209	if (r)	211	if (r) {
210	bsdar_warnc(bsdar, archive_errno(a), "%s",	212	bsdar_warnc(bsdar, archive_errno(a), "%s",
211	archive_error_string(a));	213	archive_error_string(a));
		214	exitcode = EXIT_FAILURE;
		215	}
212	}	216	}
213	}	217	}
214	AC(archive_read_close(a));	218	AC(archive_read_close(a));
215	AC(archive_read_free(a));	219	AC(archive_read_free(a));
		220
		221	return (exitcode);
216	}	222	}