/*
 * Copyright (c) 2020, the SerenityOS developers.
 * 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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 <stdio.h>
#include <unistd.h>

int main()
{
    int res = unveil("/etc", "r");
    if (res < 0) {
        fprintf(stderr, "FAIL, unveil read only failed\n");
        return 1;
    }

    res = unveil("/etc", "w");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil write permitted after unveil read only\n");
        return 1;
    }

    res = unveil("/etc", "x");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil execute permitted after unveil read only\n");
        return 1;
    }

    res = unveil("/etc", "c");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil create permitted after unveil read only\n");
        return 1;
    }

    res = unveil("/tmp/doesnotexist", "c");
    if (res < 0) {
        fprintf(stderr, "FAIL, unveil create on non-existent path failed\n");
        return 1;
    }

    res = unveil("/home", "b");
    if (res < 0) {
        fprintf(stderr, "FAIL, unveil browse failed\n");
        return 1;
    }

    res = unveil("/home", "w");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil write permitted after unveil browse only\n");
        return 1;
    }

    res = unveil("/home", "x");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil execute permitted after unveil browse only\n");
        return 1;
    }

    res = unveil("/home", "c");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil create permitted after unveil browse only\n");
        return 1;
    }

    res = unveil(nullptr, nullptr);
    if (res < 0) {
        fprintf(stderr, "FAIL, unveil state lock failed\n");
        return 1;
    }

    res = unveil("/bin", "w");
    if (res >= 0) {
        fprintf(stderr, "FAIL, unveil permitted after unveil state locked\n");
        return 1;
    }

    printf("PASS\n");
    return 0;
}