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 49 void add_rule(int argc, char *argv[]); 50 void list_rules(void); 51 void remove_rule(int argc, char *argv[]); 52 void set_rule(int argc, char *argv[]); 53 void usage(void); 54 55 void 56 usage(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 71 void 72 add_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 95 void 96 list_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 } 133 134 void 135 set_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 } 167 168 void 169 remove_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 } 192 193 int 194 main(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