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/*-
* Copyright (c) 2002 Networks Associates Technology, Inc.
* All rights reserved.
*
* This software was developed for the FreeBSD Project by NAI Labs, the
* Security Research Division of Network Associates, Inc. under
* DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
* CHATS research program.
*
* 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. The name of the author may not be used to endorse or promote
* products derived from this software without specific prior written
* permission.
*
* 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 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.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/sysctl.h>
#include <stdlib.h>
#include <string.h>
/*
* Simply test whether the TrustedBSD/MAC MIB tree is present; if so,
* return 1 to indicate that the system has MAC enabled overall or for
* a given policy.
*/
int
mac_is_present_np(const char *policyname)
{
int mib[5];
size_t siz;
char *mibname;
int error;
if (policyname != NULL) {
if (policyname[strcspn(policyname, ".=")] != '\0') {
errno = EINVAL;
return (-1);
}
mibname = malloc(sizeof("security.mac.") - 1 +
strlen(policyname) + sizeof(".enabled"));
if (mibname == NULL)
return (-1);
strcpy(mibname, "security.mac.");
strcat(mibname, policyname);
strcat(mibname, ".enabled");
siz = 5;
error = sysctlnametomib(mibname, mib, &siz);
free(mibname);
} else {
siz = 3;
error = sysctlnametomib("security.mac", mib, &siz);
}
if (error == -1) {
switch (errno) {
case ENOTDIR:
case ENOENT:
return (0);
default:
return (error);
}
}
return (1);
}
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