/*      $OpenBSD: rmdir.c,v 1.15 2025/05/14 15:51:58 schwarze Exp $     */
/*      $NetBSD: rmdir.c,v 1.13 1995/03/21 09:08:31 cgd Exp $   */

/*-
 * Copyright (c) 1992, 1993, 1994
 *      The Regents of the University of California.  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.
 * 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 <assert.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

extern char *__progname;

int rm_path(char *);
static void __dead usage(void);

int
main(int argc, char *argv[])
{
        int ch, errors;
        int pflag;

        if (pledge("stdio cpath", NULL) == -1)
                err(1, "pledge");

        pflag = 0;
        while ((ch = getopt(argc, argv, "p")) != -1)
                switch(ch) {
                case 'p':
                        pflag = 1;
                        break;
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;

        if (argc == 0)
                usage();

        for (errors = 0; *argv != NULL; argv++) {
                if (rmdir(*argv) == -1) {
                        warn("%s", *argv);
                        errors = 1;
                } else if (pflag)
                        errors |= rm_path(*argv);
        }
        return errors;
}

/*
 * Iteratively remove each pathname component, except the
 * last one, because that one was already removed in main().
 */
int
rm_path(char *path)
{
        char *p;

        assert(*path != '\0');
        p = strchr(path, '\0');
        while (--p > path && *p == '/')
                continue;

        for (; p > path; p--) {
                if (p[0] == '/' && p[-1] != '/') {
                        p[0] = '\0';
                        if (rmdir(path) == -1) {
                                warn("%s", path);
                                return 1;
                        }
                }
        }
        return 0;
}

static void __dead
usage(void)
{
        fprintf(stderr, "usage: %s [-p] directory ...\n", __progname);
        exit(1);
}