1 /*-
2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
3 *
4 * Copyright (c) 2002, 2004 Networks Associates Technology, Inc.
5 * All rights reserved.
6 *
7 * This software was developed for the FreeBSD Project by NAI Labs, the
8 * Security Research Division of Network Associates, Inc. under
9 * DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the DARPA
10 * CHATS research program.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted provided that the following conditions
14 * are met:
15 * 1. Redistributions of source code must retain the above copyright
16 * notice, this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright
18 * notice, this list of conditions and the following disclaimer in the
19 * documentation and/or other materials provided with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 */
33
34 #include <sys/cdefs.h>
35 __FBSDID("$FreeBSD$");
36
37 #include <sys/param.h>
38 #include <sys/errno.h>
39 #include <sys/mount.h>
40 #include <sys/time.h>
41 #include <sys/sysctl.h>
42
43 #include <security/mac_bsdextended/mac_bsdextended.h>
44
45 #include <err.h>
46 #include <stdio.h>
47 #include <stdlib.h>
48 #include <string.h>
49 #include <ugidfw.h>
50
51 void add_rule(int argc, char *argv[]);
52 void list_rules(void);
53 void remove_rule(int argc, char *argv[]);
54 void set_rule(int argc, char *argv[]);
55 void usage(void);
56
57 void
usage(void)58 usage(void)
59 {
60
61 fprintf(stderr, "usage: ugidfw add [subject [not] [uid uid] [gid gid]]"
62 " [object [not] [uid uid] \\\n");
63 fprintf(stderr, " [gid gid]] mode arswxn\n");
64 fprintf(stderr, " ugidfw list\n");
65 fprintf(stderr, " ugidfw set rulenum [subject [not] [uid uid] [gid gid]]"
66 " [object [not] \\\n");
67 fprintf(stderr, " [uid uid] [gid gid]] mode arswxn\n");
68 fprintf(stderr, " ugidfw remove rulenum\n");
69
70 exit(1);
71 }
72
73 void
add_rule(int argc,char * argv[])74 add_rule(int argc, char *argv[])
75 {
76 char errstr[BUFSIZ], charstr[BUFSIZ];
77 struct mac_bsdextended_rule rule;
78 int error, rulenum;
79
80 error = bsde_parse_rule(argc, argv, &rule, BUFSIZ, errstr);
81 if (error) {
82 warnx("%s", errstr);
83 return;
84 }
85
86 error = bsde_add_rule(&rulenum, &rule, BUFSIZ, errstr);
87 if (error) {
88 warnx("%s", errstr);
89 return;
90 }
91 if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
92 warnx("Added rule, but unable to print string.");
93 else
94 printf("%d %s\n", rulenum, charstr);
95 }
96
97 void
list_rules(void)98 list_rules(void)
99 {
100 char errstr[BUFSIZ], charstr[BUFSIZ];
101 struct mac_bsdextended_rule rule;
102 int error, i, rule_count, rule_slots;
103
104 rule_slots = bsde_get_rule_slots(BUFSIZ, errstr);
105 if (rule_slots == -1) {
106 warnx("unable to get rule slots; mac_bsdextended.ko "
107 "may not be loaded");
108 errx(1, "bsde_get_rule_slots: %s", errstr);
109 }
110
111 rule_count = bsde_get_rule_count(BUFSIZ, errstr);
112 if (rule_count == -1)
113 errx(1, "bsde_get_rule_count: %s", errstr);
114
115 printf("%d slots, %d rules\n", rule_slots, rule_count);
116
117 for (i = 0; i < rule_slots; i++) {
118 error = bsde_get_rule(i, &rule, BUFSIZ, errstr);
119 switch (error) {
120 case -2:
121 continue;
122 case -1:
123 warnx("rule %d: %s", i, errstr);
124 continue;
125 case 0:
126 break;
127 }
128
129 if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1)
130 warnx("unable to translate rule %d to string", i);
131 else
132 printf("%d %s\n", i, charstr);
133 }
134 }
135
136 void
set_rule(int argc,char * argv[])137 set_rule(int argc, char *argv[])
138 {
139 char errstr[BUFSIZ];
140 struct mac_bsdextended_rule rule;
141 long value;
142 int error, rulenum;
143 char *endp;
144
145 if (argc < 1)
146 usage();
147
148 value = strtol(argv[0], &endp, 10);
149 if (*endp != '\0')
150 usage();
151
152 if ((long) value != (int) value || value < 0)
153 usage();
154
155 rulenum = value;
156
157 error = bsde_parse_rule(argc - 1, argv + 1, &rule, BUFSIZ, errstr);
158 if (error) {
159 warnx("%s", errstr);
160 return;
161 }
162
163 error = bsde_set_rule(rulenum, &rule, BUFSIZ, errstr);
164 if (error) {
165 warnx("%s", errstr);
166 return;
167 }
168 }
169
170 void
remove_rule(int argc,char * argv[])171 remove_rule(int argc, char *argv[])
172 {
173 char errstr[BUFSIZ];
174 long value;
175 int error, rulenum;
176 char *endp;
177
178 if (argc != 1)
179 usage();
180
181 value = strtol(argv[0], &endp, 10);
182 if (*endp != '\0')
183 usage();
184
185 if ((long) value != (int) value || value < 0)
186 usage();
187
188 rulenum = value;
189
190 error = bsde_delete_rule(rulenum, BUFSIZ, errstr);
191 if (error)
192 warnx("%s", errstr);
193 }
194
195 int
main(int argc,char * argv[])196 main(int argc, char *argv[])
197 {
198
199 if (argc < 2)
200 usage();
201
202 if (strcmp("add", argv[1]) == 0) {
203 add_rule(argc-2, argv+2);
204 } else if (strcmp("list", argv[1]) == 0) {
205 if (argc != 2)
206 usage();
207 list_rules();
208 } else if (strcmp("set", argv[1]) == 0) {
209 set_rule(argc-2, argv+2);
210 } else if (strcmp("remove", argv[1]) == 0) {
211 remove_rule(argc-2, argv+2);
212 } else
213 usage();
214
215 return (0);
216 }
217