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freebsd/usr.sbin/ugidfw/ugidfw.c
Robert Watson a8879d0d7d In ugidfw(8), print the rule number and rule contents (as parsed and then
regenerated in libugidfw) rather than simply printing that the rule was
added with only the number.  This makes ugidfw(8) behave a bit more like
ipfw(8), and also means that the administrator sees how the rule was
interpreted once uids/gids/etc were processed.

Obtained from:	TrustedBSD Project
2008-12-24 22:40:13 +00:00

215 lines
5.2 KiB
C

/*-
* Copyright (c) 2002, 2004 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.
*
* 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.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/errno.h>
#include <sys/mount.h>
#include <sys/time.h>
#include <sys/sysctl.h>
#include <security/mac_bsdextended/mac_bsdextended.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ugidfw.h>
void add_rule(int argc, char *argv[]);
void list_rules(void);
void remove_rule(int argc, char *argv[]);
void set_rule(int argc, char *argv[]);
void usage(void);
void
usage(void)
{
fprintf(stderr, "usage: ugidfw add [subject [not] [uid uid] [gid gid]]"
" [object [not] [uid uid] \\\n");
fprintf(stderr, " [gid gid]] mode arswxn\n");
fprintf(stderr, " ugidfw list\n");
fprintf(stderr, " ugidfw set rulenum [subject [not] [uid uid] [gid gid]]"
" [object [not] \\\n");
fprintf(stderr, " [uid uid] [gid gid]] mode arswxn\n");
fprintf(stderr, " ugidfw remove rulenum\n");
exit(1);
}
void
add_rule(int argc, char *argv[])
{
char errstr[BUFSIZ], charstr[BUFSIZ];
struct mac_bsdextended_rule rule;
int error, rulenum;
error = bsde_parse_rule(argc, argv, &rule, BUFSIZ, errstr);
if (error) {
warnx("%s", errstr);
return;
}
error = bsde_add_rule(&rulenum, &rule, BUFSIZ, errstr);
if (error) {
warnx("%s", errstr);
return;
}
if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
warnx("Added rule, but unable to print string.");
else
printf("%d %s\n", rulenum, charstr);
}
void
list_rules(void)
{
char errstr[BUFSIZ], charstr[BUFSIZ];
struct mac_bsdextended_rule rule;
int error, i, rule_count, rule_slots;
rule_slots = bsde_get_rule_slots(BUFSIZ, errstr);
if (rule_slots == -1) {
warnx("unable to get rule slots; mac_bsdextended.ko "
"may not be loaded");
errx(1, "bsde_get_rule_slots: %s", errstr);
}
rule_count = bsde_get_rule_count(BUFSIZ, errstr);
if (rule_count == -1)
errx(1, "bsde_get_rule_count: %s", errstr);
printf("%d slots, %d rules\n", rule_slots, rule_count);
for (i = 0; i < rule_slots; i++) {
error = bsde_get_rule(i, &rule, BUFSIZ, errstr);
switch (error) {
case -2:
continue;
case -1:
warnx("rule %d: %s", i, errstr);
continue;
case 0:
break;
}
if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
warnx("unable to translate rule %d to string", i);
else
printf("%d %s\n", i, charstr);
}
}
void
set_rule(int argc, char *argv[])
{
char errstr[BUFSIZ];
struct mac_bsdextended_rule rule;
long value;
int error, rulenum;
char *endp;
if (argc < 1)
usage();
value = strtol(argv[0], &endp, 10);
if (*endp != '\0')
usage();
if ((long) value != (int) value || value < 0)
usage();
rulenum = value;
error = bsde_parse_rule(argc - 1, argv + 1, &rule, BUFSIZ, errstr);
if (error) {
warnx("%s", errstr);
return;
}
error = bsde_set_rule(rulenum, &rule, BUFSIZ, errstr);
if (error) {
warnx("%s", errstr);
return;
}
}
void
remove_rule(int argc, char *argv[])
{
char errstr[BUFSIZ];
long value;
int error, rulenum;
char *endp;
if (argc != 1)
usage();
value = strtol(argv[0], &endp, 10);
if (*endp != '\0')
usage();
if ((long) value != (int) value || value < 0)
usage();
rulenum = value;
error = bsde_delete_rule(rulenum, BUFSIZ, errstr);
if (error)
warnx("%s", errstr);
}
int
main(int argc, char *argv[])
{
if (argc < 2)
usage();
if (strcmp("add", argv[1]) == 0) {
add_rule(argc-2, argv+2);
} else if (strcmp("list", argv[1]) == 0) {
if (argc != 2)
usage();
list_rules();
} else if (strcmp("set", argv[1]) == 0) {
set_rule(argc-2, argv+2);
} else if (strcmp("remove", argv[1]) == 0) {
remove_rule(argc-2, argv+2);
} else
usage();
return (0);
}