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/*-
* Copyright (c) 2006 nCircle Network Security, Inc.
* All rights reserved.
*
* This software was developed by Robert N. M. Watson for the TrustedBSD
* Project under contract to nCircle Network Security, Inc.
*
* 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, NCIRCLE NETWORK SECURITY,
* INC., 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.
*
* $FreeBSD$
*/
/*
* If times is NULL, ... The caller must be the owner of the file, have
* permission to write the file, or be the super-user.
*
* If times is non-NULL, ... The caller must be the owner of the file or be
* the super-user.
*
* To test these, create a temporary file owned by uid_owner; then run a
* series of tests as root, owner, and other, along with various modes, to
* see what is permitted, and if not, what error is returned.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "main.h"
static int
try_utimes(const char *path, mode_t mode, uid_t uid,
struct timeval *timestamp, int expected)
{
int error;
if (chmod(path, mode) < 0) {
warn("try_utimes(%s, %d, %d, 0x%08x): chmod", path, mode, uid,
(u_int)timestamp);
(void)unlink(path);
exit(-1);
}
if (seteuid(uid) < 0) {
warn("try_utimes(%s, %d, %d, 0x%08x): seteuid(%d)", path,
mode, uid, (u_int)timestamp, uid);
(void)unlink(path);
exit(-1);
}
error = utimes(path, timestamp);
if (seteuid(UID_ROOT) < 0) {
warn("try_utimes(%s, %d, %d, 0x%08x): seteuid(UID_ROOT)",
path, mode, uid, (u_int)timestamp);
(void)unlink(path);
exit(-1);
}
if (expected == 0) {
if (error != 0) {
(void)unlink(path);
errx(-1, "try_utimes(%s, 0%o, %d, 0x%08x) failed %d",
path, mode, uid, (u_int)timestamp, errno);
}
return (0);
}
if (expected == errno)
return (0);
(void)unlink(path);
errx(-1, "try_utimes(%s, 0%o, %d, 0x%08x) wrong err %d", path, mode,
uid, (u_int)timestamp, errno);
}
void
test_utimes(void)
{
char path[128] = "/tmp/utimes.XXXXXXXXX";
struct timeval timestamp[2];
int fd;
if (getuid() != 0)
errx(-1, "must be run as root");
fd = mkstemp(path);
if (fd == -1)
err(-1, "mkstemp");
if (chown(path, UID_OWNER, -1) < 0) {
warn("chown(%s, %d)", path, UID_OWNER);
(void)unlink(path);
return;
}
bzero(timestamp, sizeof(timestamp));
try_utimes(path, 0444, UID_ROOT, NULL, 0);
try_utimes(path, 0444, UID_OWNER, NULL, 0);
/* Denied by permissions. */
try_utimes(path, 0444, UID_OTHER, NULL, EACCES);
try_utimes(path, 0444, UID_ROOT, timestamp, 0);
try_utimes(path, 0444, UID_OWNER, timestamp, 0);
try_utimes(path, 0444, UID_OTHER, timestamp, EPERM);
try_utimes(path, 0644, UID_ROOT, NULL, 0);
try_utimes(path, 0644, UID_OWNER, NULL, 0);
/* Denied by permissions. */
try_utimes(path, 0644, UID_OTHER, NULL, EACCES);
try_utimes(path, 0644, UID_ROOT, timestamp, 0);
try_utimes(path, 0644, UID_OWNER, timestamp, 0);
/* Denied as not owner. */
try_utimes(path, 0644, UID_OTHER, timestamp, EPERM);
try_utimes(path, 0666, UID_ROOT, NULL, 0);
try_utimes(path, 0666, UID_OWNER, NULL, 0);
try_utimes(path, 0666, UID_OTHER, NULL, 0);
try_utimes(path, 0666, UID_ROOT, timestamp, 0);
try_utimes(path, 0666, UID_OWNER, timestamp, 0);
/* Denied as not owner. */
try_utimes(path, 0666, UID_OTHER, timestamp, EPERM);
(void)unlink(path);
}
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