1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 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/param.h> 35 #include <sys/errno.h> 36 #include <sys/mount.h> 37 #include <sys/time.h> 38 #include <sys/sysctl.h> 39 40 #include <security/mac_bsdextended/mac_bsdextended.h> 41 42 #include <err.h> 43 #include <stdio.h> 44 #include <stdlib.h> 45 #include <string.h> 46 #include <ugidfw.h> 47 48 void add_rule(int argc, char *argv[]); 49 void list_rules(void); 50 void remove_rule(int argc, char *argv[]); 51 void set_rule(int argc, char *argv[]); 52 void usage(void); 53 54 void 55 usage(void) 56 { 57 58 fprintf(stderr, "usage: ugidfw add [subject [not] [uid uid] [gid gid]]" 59 " [object [not] [uid uid] \\\n"); 60 fprintf(stderr, " [gid gid]] mode arswxn\n"); 61 fprintf(stderr, " ugidfw list\n"); 62 fprintf(stderr, " ugidfw set rulenum [subject [not] [uid uid] [gid gid]]" 63 " [object [not] \\\n"); 64 fprintf(stderr, " [uid uid] [gid gid]] mode arswxn\n"); 65 fprintf(stderr, " ugidfw remove rulenum\n"); 66 67 exit(1); 68 } 69 70 void 71 add_rule(int argc, char *argv[]) 72 { 73 char errstr[BUFSIZ], charstr[BUFSIZ]; 74 struct mac_bsdextended_rule rule; 75 int error, rulenum; 76 77 error = bsde_parse_rule(argc, argv, &rule, BUFSIZ, errstr); 78 if (error) { 79 warnx("%s", errstr); 80 return; 81 } 82 83 error = bsde_add_rule(&rulenum, &rule, BUFSIZ, errstr); 84 if (error) { 85 warnx("%s", errstr); 86 return; 87 } 88 if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1) 89 warnx("Added rule, but unable to print string."); 90 else 91 printf("%d %s\n", rulenum, charstr); 92 } 93 94 void 95 list_rules(void) 96 { 97 char errstr[BUFSIZ], charstr[BUFSIZ]; 98 struct mac_bsdextended_rule rule; 99 int error, i, rule_count, rule_slots; 100 101 rule_slots = bsde_get_rule_slots(BUFSIZ, errstr); 102 if (rule_slots == -1) { 103 warnx("unable to get rule slots; mac_bsdextended.ko " 104 "may not be loaded"); 105 errx(1, "bsde_get_rule_slots: %s", errstr); 106 } 107 108 rule_count = bsde_get_rule_count(BUFSIZ, errstr); 109 if (rule_count == -1) 110 errx(1, "bsde_get_rule_count: %s", errstr); 111 112 printf("%d slots, %d rules\n", rule_slots, rule_count); 113 114 for (i = 0; i < rule_slots; i++) { 115 error = bsde_get_rule(i, &rule, BUFSIZ, errstr); 116 switch (error) { 117 case -2: 118 continue; 119 case -1: 120 warnx("rule %d: %s", i, errstr); 121 continue; 122 case 0: 123 break; 124 } 125 126 if (bsde_rule_to_string(&rule, charstr, BUFSIZ) == -1) 127 warnx("unable to translate rule %d to string", i); 128 else 129 printf("%d %s\n", i, charstr); 130 } 131 } 132 133 void 134 set_rule(int argc, char *argv[]) 135 { 136 char errstr[BUFSIZ]; 137 struct mac_bsdextended_rule rule; 138 long value; 139 int error, rulenum; 140 char *endp; 141 142 if (argc < 1) 143 usage(); 144 145 value = strtol(argv[0], &endp, 10); 146 if (*endp != '\0') 147 usage(); 148 149 if ((long) value != (int) value || value < 0) 150 usage(); 151 152 rulenum = value; 153 154 error = bsde_parse_rule(argc - 1, argv + 1, &rule, BUFSIZ, errstr); 155 if (error) { 156 warnx("%s", errstr); 157 return; 158 } 159 160 error = bsde_set_rule(rulenum, &rule, BUFSIZ, errstr); 161 if (error) { 162 warnx("%s", errstr); 163 return; 164 } 165 } 166 167 void 168 remove_rule(int argc, char *argv[]) 169 { 170 char errstr[BUFSIZ]; 171 long value; 172 int error, rulenum; 173 char *endp; 174 175 if (argc != 1) 176 usage(); 177 178 value = strtol(argv[0], &endp, 10); 179 if (*endp != '\0') 180 usage(); 181 182 if ((long) value != (int) value || value < 0) 183 usage(); 184 185 rulenum = value; 186 187 error = bsde_delete_rule(rulenum, BUFSIZ, errstr); 188 if (error) 189 warnx("%s", errstr); 190 } 191 192 int 193 main(int argc, char *argv[]) 194 { 195 196 if (argc < 2) 197 usage(); 198 199 if (strcmp("add", argv[1]) == 0) { 200 add_rule(argc-2, argv+2); 201 } else if (strcmp("list", argv[1]) == 0) { 202 if (argc != 2) 203 usage(); 204 list_rules(); 205 } else if (strcmp("set", argv[1]) == 0) { 206 set_rule(argc-2, argv+2); 207 } else if (strcmp("remove", argv[1]) == 0) { 208 remove_rule(argc-2, argv+2); 209 } else 210 usage(); 211 212 return (0); 213 } 214