1 /*- 2 * Copyright (c) 2005 McAfee, Inc. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 * 26 * $FreeBSD$ 27 */ 28 29 #include <sys/param.h> 30 #include <sys/mac.h> 31 #include <sys/mount.h> 32 33 #include <security/mac_bsdextended/mac_bsdextended.h> 34 35 #include <err.h> 36 #include <errno.h> 37 #include <grp.h> 38 #include <pwd.h> 39 #include <stdio.h> 40 #include <stdlib.h> 41 #include <string.h> 42 #include <ugidfw.h> 43 #include <unistd.h> 44 45 /* 46 * Starting point for a regression test for mac_bsdextended(4) and the 47 * supporting libugidfw(3). 48 */ 49 50 /* 51 * This section of the regression test passes some test cases through the 52 * rule<->string routines to confirm they work approximately as desired. 53 */ 54 55 /* 56 * List of users and groups we must check exists before we can begin, since 57 * they are used in the string test rules. We use users and groups that will 58 * always exist in a default install used for regression testing. 59 */ 60 static const char *test_users[] = { 61 "root", 62 "daemon", 63 "operator", 64 "bin", 65 }; 66 67 static const char *test_groups[] = { 68 "wheel", 69 "daemon", 70 "operator", 71 "bin", 72 }; 73 74 static int test_num; 75 76 /* 77 * List of test strings that must go in (and come out) of libugidfw intact. 78 */ 79 static const char *test_strings[] = { 80 /* Variations on subject and object uids. */ 81 "subject uid root object uid root mode n", 82 "subject uid root object uid daemon mode n", 83 "subject uid daemon object uid root mode n", 84 "subject uid daemon object uid daemon mode n", 85 /* Variations on mode. */ 86 "subject uid root object uid root mode a", 87 "subject uid root object uid root mode r", 88 "subject uid root object uid root mode s", 89 "subject uid root object uid root mode w", 90 "subject uid root object uid root mode x", 91 "subject uid root object uid root mode arswx", 92 /* Variations on subject and object gids. */ 93 "subject gid wheel object gid wheel mode n", 94 "subject gid wheel object gid daemon mode n", 95 "subject gid daemon object gid wheel mode n", 96 "subject gid daemon object gid daemon mode n", 97 /* Subject uids and subject gids. */ 98 "subject uid bin gid daemon object uid operator gid wheel mode n", 99 /* Not */ 100 "subject not uid operator object uid bin mode n", 101 "subject uid bin object not uid operator mode n", 102 "subject not uid daemon object not uid operator mode n", 103 /* Ranges */ 104 "subject uid root:operator object gid wheel:bin mode n", 105 /* Jail ID */ 106 "subject jailid 1 object uid root mode n", 107 /* Filesys */ 108 "subject uid root object filesys / mode n", 109 "subject uid root object filesys /dev mode n", 110 /* S/UGID */ 111 "subject not uid root object sgid mode n", 112 "subject not uid root object sgid mode n", 113 /* Matching uid/gid */ 114 "subject not uid root:operator object not uid_of_subject mode n", 115 "subject not gid wheel:bin object not gid_of_subject mode n", 116 /* Object types */ 117 "subject uid root object type a mode a", 118 "subject uid root object type r mode a", 119 "subject uid root object type d mode a", 120 "subject uid root object type b mode a", 121 "subject uid root object type c mode a", 122 "subject uid root object type l mode a", 123 "subject uid root object type s mode a", 124 "subject uid root object type rbc mode a", 125 "subject uid root object type dls mode a", 126 /* Empty rules always match */ 127 "subject object mode a", 128 /* Partial negations */ 129 "subject ! uid root object mode n", 130 "subject ! gid wheel object mode n", 131 "subject ! jailid 2 object mode n", 132 "subject object ! uid root mode n", 133 "subject object ! gid wheel mode n", 134 "subject object ! filesys / mode n", 135 "subject object ! suid mode n", 136 "subject object ! sgid mode n", 137 "subject object ! uid_of_subject mode n", 138 "subject object ! gid_of_subject mode n", 139 "subject object ! type d mode n", 140 /* All out nonsense */ 141 "subject uid root ! gid wheel:bin ! jailid 1 " 142 "object ! uid root:daemon gid daemon filesys / suid sgid uid_of_subject gid_of_subject ! type r " 143 "mode rsx", 144 }; 145 146 static void 147 test_libugidfw_strings(void) 148 { 149 struct mac_bsdextended_rule rule; 150 char errorstr[256]; 151 char rulestr[256]; 152 size_t i; 153 int error; 154 155 for (i = 0; i < nitems(test_users); i++, test_num++) { 156 if (getpwnam(test_users[i]) == NULL) 157 printf("not ok %d # test_libugidfw_strings: getpwnam(%s) " 158 "failed: %s\n", test_num, test_users[i], strerror(errno)); 159 else 160 printf("ok %d\n", test_num); 161 } 162 163 for (i = 0; i < nitems(test_groups); i++, test_num++) { 164 if (getgrnam(test_groups[i]) == NULL) 165 printf("not ok %d # test_libugidfw_strings: getgrnam(%s) " 166 "failed: %s\n", test_num, test_groups[i], strerror(errno)); 167 else 168 printf("ok %d\n", test_num); 169 } 170 171 for (i = 0; i < nitems(test_strings); i++) { 172 error = bsde_parse_rule_string(test_strings[i], &rule, 173 sizeof(errorstr), errorstr); 174 if (error == -1) 175 printf("not ok %d # bsde_parse_rule_string: '%s' (%zu) " 176 "failed: %s\n", test_num, test_strings[i], i, errorstr); 177 else 178 printf("ok %d\n", test_num); 179 test_num++; 180 181 error = bsde_rule_to_string(&rule, rulestr, sizeof(rulestr)); 182 if (error < 0) 183 printf("not ok %d # bsde_rule_to_string: rule for '%s' " 184 "returned %d\n", test_num, test_strings[i], error); 185 else 186 printf("ok %d\n", test_num); 187 test_num++; 188 189 if (strcmp(test_strings[i], rulestr) != 0) 190 printf("not ok %d # test_libugidfw: '%s' in, '%s' " 191 "out\n", test_num, test_strings[i], rulestr); 192 else 193 printf("ok %d\n", test_num); 194 test_num++; 195 } 196 } 197 198 int 199 main(void) 200 { 201 char errorstr[256]; 202 int count, slots; 203 204 test_num = 1; 205 206 /* Print an error if a non-root user attemps to run the tests. */ 207 if (getuid() != 0) { 208 printf("1..0 # SKIP you must be root\n"); 209 return (0); 210 } 211 212 switch (mac_is_present("bsdextended")) { 213 case -1: 214 printf("1..0 # SKIP mac_is_present failed: %s\n", 215 strerror(errno)); 216 return (0); 217 case 1: 218 break; 219 case 0: 220 default: 221 printf("1..0 # SKIP mac_bsdextended not loaded\n"); 222 return (0); 223 } 224 225 printf("1..%lu\n", nitems(test_users) + nitems(test_groups) + 226 3 * nitems(test_strings) + 2); 227 228 test_libugidfw_strings(); 229 230 /* 231 * Some simple up-front checks to see if we're able to query the 232 * policy for basic state. We want the rule count to be 0 before 233 * starting, but "slots" is a property of prior runs and so we ignore 234 * the return value. 235 */ 236 count = bsde_get_rule_count(sizeof(errorstr), errorstr); 237 if (count == -1) 238 printf("not ok %d # bsde_get_rule_count: %s\n", test_num, 239 errorstr); 240 else 241 printf("ok %d\n", test_num); 242 243 test_num++; 244 245 slots = bsde_get_rule_slots(sizeof(errorstr), errorstr); 246 if (slots == -1) 247 printf("not ok %d # bsde_get_rule_slots: %s\n", test_num, 248 errorstr); 249 else 250 printf("ok %d\n", test_num); 251 252 return (0); 253 } 254