1/*-
2 * Copyright (c) 2002, 2004 Networks Associates Technology, Inc.
3 * All rights reserved.
4 *
5 * This software was developed for the FreeBSD Project by NAI Labs, the
6 * Security Research Division of Network Associates, Inc. under
7 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
8 * CHATS research program.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 *    notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 *    notice, this list of conditions and the following disclaimer in the
17 *    documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
22 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
29 * SUCH DAMAGE.
30 */
31
32#include <sys/cdefs.h>
33__FBSDID("$FreeBSD$");
34
35#include <sys/param.h>
36#include <sys/errno.h>
37#include <sys/mount.h>
38#include <sys/time.h>
39#include <sys/sysctl.h>
40
41#include <security/mac_bsdextended/mac_bsdextended.h>
42
43#include <err.h>
44#include <stdio.h>
45#include <stdlib.h>
46#include <string.h>
47#include <ugidfw.h>
48
49void add_rule(int argc, char *argv[]);
50void list_rules(void);
51void remove_rule(int argc, char *argv[]);
52void set_rule(int argc, char *argv[]);
53void usage(void);
54
55void
56usage(void)
57{
58
59	fprintf(stderr, "usage: ugidfw add [subject [not] [uid uid] [gid gid]]"
60	    " [object [not] [uid uid] \\\n");
61	fprintf(stderr, "    [gid gid]] mode arswxn\n");
62	fprintf(stderr, "       ugidfw list\n");
63	fprintf(stderr, "       ugidfw set rulenum [subject [not] [uid uid] [gid gid]]"
64	    " [object [not] \\\n");
65	fprintf(stderr, "    [uid uid] [gid gid]] mode arswxn\n");
66	fprintf(stderr, "       ugidfw remove rulenum\n");
67
68	exit(1);
69}
70
71void
72add_rule(int argc, char *argv[])
73{
74	char errstr[BUFSIZ], charstr[BUFSIZ];
75	struct mac_bsdextended_rule rule;
76	int error, rulenum;
77
78	error = bsde_parse_rule(argc, argv, &rule, BUFSIZ, errstr);
79	if (error) {
80		warnx("%s", errstr);
81		return;
82	}
83
84	error = bsde_add_rule(&rulenum, &rule, BUFSIZ, errstr);
85	if (error) {
86		warnx("%s", errstr);
87		return;
88	}
89	if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
90		warnx("Added rule, but unable to print string.");
91	else
92		printf("%d %s\n", rulenum, charstr);
93}
94
95void
96list_rules(void)
97{
98	char errstr[BUFSIZ], charstr[BUFSIZ];
99	struct mac_bsdextended_rule rule;
100	int error, i, rule_count, rule_slots;
101
102	rule_slots = bsde_get_rule_slots(BUFSIZ, errstr);
103	if (rule_slots == -1) {
104		warnx("unable to get rule slots; mac_bsdextended.ko "
105		    "may not be loaded");
106		errx(1, "bsde_get_rule_slots: %s", errstr);
107	}
108
109	rule_count = bsde_get_rule_count(BUFSIZ, errstr);
110	if (rule_count == -1)
111		errx(1, "bsde_get_rule_count: %s", errstr);
112
113	printf("%d slots, %d rules\n", rule_slots, rule_count);
114
115	for (i = 0; i < rule_slots; i++) {
116		error = bsde_get_rule(i, &rule, BUFSIZ, errstr);
117		switch (error) {
118		case -2:
119			continue;
120		case -1:
121			warnx("rule %d: %s", i, errstr);
122			continue;
123		case 0:
124			break;
125		}
126
127		if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
128			warnx("unable to translate rule %d to string", i);
129		else
130			printf("%d %s\n", i, charstr);
131	}
132}
133
134void
135set_rule(int argc, char *argv[])
136{
137	char errstr[BUFSIZ];
138	struct mac_bsdextended_rule rule;
139	long value;
140	int error, rulenum;
141	char *endp;
142
143	if (argc < 1)
144		usage();
145
146	value = strtol(argv[0], &endp, 10);
147	if (*endp != '\0')
148		usage();
149
150	if ((long) value != (int) value || value < 0)
151		usage();
152
153	rulenum = value;
154
155	error = bsde_parse_rule(argc - 1, argv + 1, &rule, BUFSIZ, errstr);
156	if (error) {
157		warnx("%s", errstr);
158		return;
159	}
160
161	error = bsde_set_rule(rulenum, &rule, BUFSIZ, errstr);
162	if (error) {
163		warnx("%s", errstr);
164		return;
165	}
166}
167
168void
169remove_rule(int argc, char *argv[])
170{
171	char errstr[BUFSIZ];
172	long value;
173	int error, rulenum;
174	char *endp;
175
176	if (argc != 1)
177		usage();
178
179	value = strtol(argv[0], &endp, 10);
180	if (*endp != '\0')
181		usage();
182
183	if ((long) value != (int) value || value < 0)
184		usage();
185
186	rulenum = value;
187
188	error = bsde_delete_rule(rulenum, BUFSIZ, errstr);
189	if (error)
190		warnx("%s", errstr);
191}
192
193int
194main(int argc, char *argv[])
195{
196
197	if (argc < 2)
198		usage();
199
200	if (strcmp("add", argv[1]) == 0) {
201		add_rule(argc-2, argv+2);
202	} else if (strcmp("list", argv[1]) == 0) {
203		if (argc != 2)
204			usage();
205		list_rules();
206	} else if (strcmp("set", argv[1]) == 0) {
207		set_rule(argc-2, argv+2);
208	} else if (strcmp("remove", argv[1]) == 0) {
209		remove_rule(argc-2, argv+2);
210	} else
211		usage();
212
213	return (0);
214}
215