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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.
*
* $FreeBSD$
*/
/*
* Test that configuring accounting requires privilege. First check that
* accounting is not in use on the system to prevent disrupting the
* accounting service. Confirm three different state transitions, both as
* privileged and non-privileged: disabled to enabled, rotate, and enabled to
* disabled.
*/
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/sysctl.h>
#include <err.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include "main.h"
#define SYSCTL_NAME "kern.acct_configured"
#define PATH_TEMPLATE "/tmp/acct.XXXXXXXXXXX"
void
priv_acct(void)
{
char fpath1[1024] = PATH_TEMPLATE;
char fpath2[1024] = PATH_TEMPLATE;
int error, fd, i;
size_t len;
assert_root();
/*
* Check that accounting isn't already configured in the kernel.
*/
len = sizeof(i);
if (sysctlbyname(SYSCTL_NAME, &i, &len, NULL, 0) < 0)
err(-1, "sysctlbyname(%s)", SYSCTL_NAME);
if (i != 0)
errx(-1, "sysctlbyname(%s) indicates accounting configured",
SYSCTL_NAME);
/*
* Create two temporary files to use as accounting targets.
*/
fd = mkstemp(fpath1);
if (fd < 0)
err(-1, "mkstemp");
close(fd);
fd = mkstemp(fpath2);
if (fd < 0) {
warn("mkstemp");
(void)unlink(fpath1);
exit(-1);
}
/*
* Change the permissions on the file so that access control on the
* file doesn't come into play.
*/
if (chmod(fpath1, 0666) < 0) {
warn("chmod(%s, 0666)", fpath1);
goto out;
}
if (chmod(fpath2, 0666) < 0) {
warn("chmod(%s, 0600)", fpath2);
goto out;
}
/*
* Test that privileged can move through entire life cycle.
*/
if (acct(fpath1) < 0) {
warn("acct(NULL -> %s) as root", fpath1);
goto out;
}
if (acct(fpath2) < 0) {
warn("acct(%s -> %s) as root", fpath1, fpath2);
goto out;
}
if (acct(NULL) < 0) {
warn("acct(%s -> NULL) as root", fpath1);
goto out;
}
/*
* Testing for unprivileged is a bit more tricky, as expect each step
* to fail, so must replay various bits of the setup process as root
* so that each step can be tested as !root.
*/
set_euid(UID_OTHER);
error = acct(fpath1);
if (error == 0) {
warnx("acct(NULL -> %s) succeeded as !root", fpath1);
goto out;
}
if (errno != EPERM) {
warn("acct(NULL -> %s) wrong errno %d as !root", fpath1,
errno);
goto out;
}
set_euid(UID_ROOT);
if (acct(fpath1) < 0) {
err(-1, "acct(NULL -> %s) setup for !root", fpath1);
goto out;
}
set_euid(UID_OTHER);
error = acct(fpath2);
if (error == 0) {
warnx("acct(%s -> %s) succeeded as !root", fpath1, fpath2);
goto out;
}
if (errno != EPERM) {
warn("acct(%s -> %s) wrong errno %d as !root", fpath1,
fpath2, errno);
goto out;
}
set_euid(UID_ROOT);
if (acct(fpath2) < 0) {
err(-1, "acct(%s -> %s) setup for !root", fpath1, fpath2);
goto out;
}
set_euid(UID_OTHER);
error = acct(NULL);
if (error == 0) {
warnx("acct(%s -> NULL) succeeded as !root", fpath2);
goto out;
}
if (errno != EPERM) {
warn("acct(%s -> NULL) wrong errno %d as !root", fpath2,
errno);
goto out;
}
out:
(void)seteuid(UID_ROOT);
(void)acct(NULL);
(void)unlink(fpath1);
(void)unlink(fpath2);
}
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