/*-
 * Copyright (C) 1996
 *      David L. Nugent.  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 DAVID L. NUGENT 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 DAVID L. NUGENT 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: src/usr.sbin/pw/rm_r.c,v 1.6 2001/06/24 20:25:20 dd Exp $
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/param.h>
#include <unistd.h>
#include <dirent.h>

#include "pwupd.h"

void
rm_r(char const * dir, uid_t uid)
{
        DIR            *d = opendir(dir);

        if (d != NULL) {
                struct dirent  *e;
                struct stat     st;
                char            file[MAXPATHLEN];

                while ((e = readdir(d)) != NULL) {
                        if (strcmp(e->d_name, ".") != 0 && strcmp(e->d_name, "..") != 0) {
                                sprintf(file, "%s/%s", dir, e->d_name);
                                if (lstat(file, &st) == 0) {    /* Need symlinks, not
                                                                 * linked file */
                                        if (S_ISDIR(st.st_mode))        /* Directory - recurse */
                                                rm_r(file, uid);
                                        else {
                                                if (S_ISLNK(st.st_mode) || st.st_uid == uid)
                                                        remove(file);
                                        }
                                }
                        }
                }
                closedir(d);
                if (lstat(dir, &st) == 0) {
                        if (S_ISLNK(st.st_mode))
                                remove(dir);
                        else if (st.st_uid == uid)
                                rmdir(dir);
                }
        }
}