1 /*- 2 * Copyright (c) 2006 nCircle Network Security, Inc. 3 * Copyright (c) 2007 Robert N. M. Watson 4 * All rights reserved. 5 * 6 * This software was developed by Robert N. M. Watson for the TrustedBSD 7 * Project under contract to nCircle Network Security, Inc. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR, NCIRCLE NETWORK SECURITY, 22 * INC., OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 24 * TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 25 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 26 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 27 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 28 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 * 30 * $FreeBSD$ 31 */ 32 33 /* 34 * Privilege test framework. Each test is encapsulated on a .c file 35 * exporting a function that implements the test. Each test is run from its 36 * own child process, and they are run in sequence one at a time. 37 */ 38 39 #include <sys/param.h> 40 #include <sys/jail.h> 41 #include <sys/stat.h> 42 #include <sys/wait.h> 43 44 #include <netinet/in.h> 45 46 #include <err.h> 47 #include <errno.h> 48 #include <stdio.h> 49 #include <stdlib.h> 50 #include <string.h> 51 #include <unistd.h> 52 53 #include "main.h" 54 55 /* 56 * Registration table of privilege tests. Each test registers a name, a test 57 * function, and a cleanup function to run after the test has completed, 58 * regardless of success/failure. 59 */ 60 static struct test tests[] = { 61 { "priv_acct_enable", priv_acct_setup, priv_acct_enable, 62 priv_acct_cleanup }, 63 64 { "priv_acct_disable", priv_acct_setup, priv_acct_disable, 65 priv_acct_cleanup }, 66 67 { "priv_acct_rotate", priv_acct_setup, priv_acct_rotate, 68 priv_acct_cleanup }, 69 70 { "priv_acct_noopdisable", priv_acct_setup, priv_acct_noopdisable, 71 priv_acct_cleanup }, 72 73 { "priv_adjtime_set", priv_adjtime_setup, priv_adjtime_set, 74 priv_adjtime_cleanup }, 75 76 { "priv_audit_submit", priv_audit_submit_setup, priv_audit_submit, 77 priv_audit_submit_cleanup }, 78 79 { "priv_audit_control", priv_audit_control_setup, priv_audit_control, 80 priv_audit_control_cleanup }, 81 82 { "priv_audit_getaudit", priv_audit_getaudit_setup, 83 priv_audit_getaudit, priv_audit_getaudit_cleanup }, 84 85 { "priv_audit_getaudit_addr", priv_audit_getaudit_setup, 86 priv_audit_getaudit_addr, priv_audit_getaudit_cleanup }, 87 88 { "priv_audit_setaudit", priv_audit_setaudit_setup, 89 priv_audit_setaudit, priv_audit_setaudit_cleanup }, 90 91 { "priv_audit_setaudit_addr", priv_audit_setaudit_setup, 92 priv_audit_setaudit_addr, priv_audit_setaudit_cleanup }, 93 94 { "priv_clock_settime", priv_clock_settime_setup, priv_clock_settime, 95 priv_clock_settime_cleanup }, 96 97 { "priv_cred_setuid", priv_cred_setup, priv_cred_setuid, 98 priv_cred_cleanup }, 99 100 { "priv_cred_seteuid", priv_cred_setup, priv_cred_seteuid, 101 priv_cred_cleanup }, 102 103 { "priv_cred_setgid", priv_cred_setup, priv_cred_setgid, 104 priv_cred_cleanup }, 105 106 { "priv_cred_setegid", priv_cred_setup, priv_cred_setegid, 107 priv_cred_cleanup }, 108 109 { "priv_cred_setgroups", priv_cred_setup, priv_cred_setgroups, 110 priv_cred_cleanup }, 111 112 { "priv_cred_setreuid", priv_cred_setup, priv_cred_setreuid, 113 priv_cred_cleanup }, 114 115 { "priv_cred_setregid", priv_cred_setup, priv_cred_setregid, 116 priv_cred_cleanup }, 117 118 { "priv_cred_setresuid", priv_cred_setup, priv_cred_setresuid, 119 priv_cred_cleanup }, 120 121 { "priv_cred_setresgid", priv_cred_setup, priv_cred_setresgid, 122 priv_cred_cleanup }, 123 124 { "priv_io", priv_io_setup, priv_io, priv_io_cleanup }, 125 126 { "priv_kenv_set", priv_kenv_set_setup, priv_kenv_set, 127 priv_kenv_set_cleanup }, 128 129 { "priv_kenv_unset", priv_kenv_unset_setup, priv_kenv_unset, 130 priv_kenv_unset_cleanup }, 131 132 { "priv_msgbuf_privonly", priv_msgbuf_privonly_setup, 133 priv_msgbuf_privonly, priv_msgbuf_cleanup }, 134 135 { "priv_msgbuf_unprivok", priv_msgbuf_unprivok_setup, 136 priv_msgbuf_unprivok, priv_msgbuf_cleanup }, 137 138 { "priv_netinet_ipsec_pfkey", NULL, priv_netinet_ipsec_pfkey, NULL }, 139 140 { "priv_netinet_ipsec_policy4_bypass", 141 priv_netinet_ipsec_policy4_bypass_setup, 142 priv_netinet_ipsec_policy4_bypass, 143 priv_netinet_ipsec_policy_bypass_cleanup }, 144 145 { "priv_netinet_ipsec_policy6_bypass", 146 priv_netinet_ipsec_policy6_bypass_setup, 147 priv_netinet_ipsec_policy6_bypass, 148 priv_netinet_ipsec_policy_bypass_cleanup }, 149 150 { "priv_netinet_ipsec_policy4_entrust", 151 priv_netinet_ipsec_policy4_entrust_setup, 152 priv_netinet_ipsec_policy4_entrust, 153 priv_netinet_ipsec_policy_entrust_cleanup }, 154 155 { "priv_netinet_ipsec_policy6_entrust", 156 priv_netinet_ipsec_policy6_entrust_setup, 157 priv_netinet_ipsec_policy6_entrust, 158 priv_netinet_ipsec_policy_entrust_cleanup }, 159 160 { "priv_netinet_raw", priv_netinet_raw_setup, priv_netinet_raw, 161 priv_netinet_raw_cleanup }, 162 163 { "priv_proc_setlogin", priv_proc_setlogin_setup, priv_proc_setlogin, 164 priv_proc_setlogin_cleanup }, 165 166 { "priv_proc_setrlimit_raisemax", priv_proc_setrlimit_setup, 167 priv_proc_setrlimit_raisemax, priv_proc_setrlimit_cleanup }, 168 169 { "priv_proc_setrlimit_raisecur", priv_proc_setrlimit_setup, 170 priv_proc_setrlimit_raisecur, priv_proc_setrlimit_cleanup }, 171 172 { "priv_proc_setrlimit_raisecur_nopriv", priv_proc_setrlimit_setup, 173 priv_proc_setrlimit_raisecur_nopriv, 174 priv_proc_setrlimit_cleanup }, 175 176 { "priv_sched_rtprio_curproc_normal", priv_sched_rtprio_setup, 177 priv_sched_rtprio_curproc_normal, priv_sched_rtprio_cleanup }, 178 179 { "priv_sched_rtprio_curproc_idle", priv_sched_rtprio_setup, 180 priv_sched_rtprio_curproc_idle, priv_sched_rtprio_cleanup }, 181 182 { "priv_sched_rtprio_curproc_realtime", priv_sched_rtprio_setup, 183 priv_sched_rtprio_curproc_realtime, priv_sched_rtprio_cleanup }, 184 185 { "priv_sched_rtprio_myproc_normal", priv_sched_rtprio_setup, 186 priv_sched_rtprio_myproc_normal, priv_sched_rtprio_cleanup }, 187 188 { "priv_sched_rtprio_myproc_idle", priv_sched_rtprio_setup, 189 priv_sched_rtprio_myproc_idle, priv_sched_rtprio_cleanup }, 190 191 { "priv_sched_rtprio_myproc_realtime", priv_sched_rtprio_setup, 192 priv_sched_rtprio_myproc_realtime, priv_sched_rtprio_cleanup }, 193 194 { "priv_sched_rtprio_aproc_normal", priv_sched_rtprio_setup, 195 priv_sched_rtprio_aproc_normal, priv_sched_rtprio_cleanup }, 196 197 { "priv_sched_rtprio_aproc_idle", priv_sched_rtprio_setup, 198 priv_sched_rtprio_aproc_idle, priv_sched_rtprio_cleanup }, 199 200 { "priv_sched_rtprio_aproc_realtime", priv_sched_rtprio_setup, 201 priv_sched_rtprio_aproc_realtime, priv_sched_rtprio_cleanup }, 202 203 { "priv_sched_setpriority_curproc", priv_sched_setpriority_setup, 204 priv_sched_setpriority_curproc, priv_sched_setpriority_cleanup }, 205 206 { "priv_sched_setpriority_myproc", priv_sched_setpriority_setup, 207 priv_sched_setpriority_myproc, priv_sched_setpriority_cleanup }, 208 209 { "priv_sched_setpriority_aproc", priv_sched_setpriority_setup, 210 priv_sched_setpriority_aproc, priv_sched_setpriority_cleanup }, 211 212 { "priv_settimeofday", priv_settimeofday_setup, priv_settimeofday, 213 priv_settimeofday_cleanup }, 214 215 { "priv_sysctl_write", priv_sysctl_write_setup, priv_sysctl_write, 216 priv_sysctl_write_cleanup }, 217 218 { "priv_sysctl_writejail", priv_sysctl_write_setup, 219 priv_sysctl_writejail, priv_sysctl_write_cleanup }, 220 221 { "priv_vfs_chflags_froot_uflags", priv_vfs_chflags_froot_setup, 222 priv_vfs_chflags_froot_uflags, priv_vfs_chflags_cleanup }, 223 224 { "priv_vfs_chflags_froot_sflags", priv_vfs_chflags_froot_setup, 225 priv_vfs_chflags_froot_sflags, priv_vfs_chflags_cleanup }, 226 227 { "priv_vfs_chflags_fowner_uflags", priv_vfs_chflags_fowner_setup, 228 priv_vfs_chflags_fowner_uflags, priv_vfs_chflags_cleanup }, 229 230 { "priv_vfs_chflags_fowner_sflags", priv_vfs_chflags_fowner_setup, 231 priv_vfs_chflags_fowner_sflags, priv_vfs_chflags_cleanup }, 232 233 { "priv_vfs_chflags_fother_uflags", priv_vfs_chflags_fother_setup, 234 priv_vfs_chflags_fother_uflags, priv_vfs_chflags_cleanup }, 235 236 { "priv_vfs_chflags_fother_sflags", priv_vfs_chflags_fother_setup, 237 priv_vfs_chflags_fother_sflags, priv_vfs_chflags_cleanup }, 238 239 { "priv_vfs_chmod_froot", priv_vfs_chmod_froot_setup, 240 priv_vfs_chmod_froot, priv_vfs_chmod_cleanup }, 241 242 { "priv_vfs_chmod_fowner", priv_vfs_chmod_fowner_setup, 243 priv_vfs_chmod_fowner, priv_vfs_chmod_cleanup }, 244 245 { "priv_vfs_chmod_fother", priv_vfs_chmod_fother_setup, 246 priv_vfs_chmod_fother, priv_vfs_chmod_cleanup }, 247 248 { "priv_vfs_chown_uid", priv_vfs_chown_uid_setup, priv_vfs_chown_uid, 249 priv_vfs_chown_cleanup }, 250 251 { "priv_vfs_chown_mygid", priv_vfs_chown_mygid_setup, 252 priv_vfs_chown_mygid, priv_vfs_chown_cleanup }, 253 254 { "priv_vfs_chown_othergid", priv_vfs_chown_othergid_setup, 255 priv_vfs_chown_othergid, priv_vfs_chown_cleanup }, 256 257 { "priv_vfs_chroot", priv_vfs_chroot_setup, priv_vfs_chroot, 258 priv_vfs_chroot_cleanup }, 259 260 { "priv_vfs_clearsugid_chgrp", priv_vfs_clearsugid_setup, 261 priv_vfs_clearsugid_chgrp, priv_vfs_clearsugid_cleanup }, 262 263 { "priv_vfs_clearsugid_extattr", priv_vfs_clearsugid_setup, 264 priv_vfs_clearsugid_extattr, priv_vfs_clearsugid_cleanup }, 265 266 { "priv_vfs_clearsugid_write", priv_vfs_clearsugid_setup, 267 priv_vfs_clearsugid_write, priv_vfs_clearsugid_cleanup }, 268 269 { "priv_vfs_extattr_system", priv_vfs_extattr_system_setup, 270 priv_vfs_extattr_system, priv_vfs_extattr_system_cleanup }, 271 272 { "priv_vfs_fhopen", priv_vfs_fhopen_setup, priv_vfs_fhopen, 273 priv_vfs_fhopen_cleanup }, 274 275 { "priv_vfs_fhstat", priv_vfs_fhstat_setup, priv_vfs_fhstat, 276 priv_vfs_fhstat_cleanup }, 277 278 { "priv_vfs_fhstatfs", priv_vfs_fhstatfs_setup, priv_vfs_fhstatfs, 279 priv_vfs_fhstatfs_cleanup }, 280 281 { "priv_vfs_generation", priv_vfs_generation_setup, 282 priv_vfs_generation, priv_vfs_generation_cleanup }, 283 284 { "priv_vfs_getfh", priv_vfs_getfh_setup, priv_vfs_getfh, 285 priv_vfs_getfh_cleanup }, 286 287 { "priv_vfs_readwrite_fowner", priv_vfs_readwrite_fowner_setup, 288 priv_vfs_readwrite_fowner, priv_vfs_readwrite_cleanup }, 289 290 { "priv_vfs_readwrite_fgroup", priv_vfs_readwrite_fgroup_setup, 291 priv_vfs_readwrite_fgroup, priv_vfs_readwrite_cleanup }, 292 293 { "priv_vfs_readwrite_fother", priv_vfs_readwrite_fother_setup, 294 priv_vfs_readwrite_fother, priv_vfs_readwrite_cleanup }, 295 296 { "priv_vfs_setgid_fowner", priv_vfs_setgid_fowner_setup, 297 priv_vfs_setgid_fowner, priv_vfs_setgid_cleanup }, 298 299 { "priv_vfs_setgid_fother", priv_vfs_setgid_fother_setup, 300 priv_vfs_setgid_fother, priv_vfs_setgid_cleanup }, 301 302 { "priv_vfs_stickyfile_dir_fowner", 303 priv_vfs_stickyfile_dir_fowner_setup, 304 priv_vfs_stickyfile_dir_fowner, 305 priv_vfs_stickyfile_dir_cleanup }, 306 307 { "priv_vfs_stickyfile_dir_fother", 308 priv_vfs_stickyfile_dir_fother_setup, 309 priv_vfs_stickyfile_dir_fother, 310 priv_vfs_stickyfile_dir_cleanup }, 311 312 { "priv_vfs_stickyfile_file_fowner", 313 priv_vfs_stickyfile_file_fowner_setup, 314 priv_vfs_stickyfile_file_fowner, 315 priv_vfs_stickyfile_file_cleanup }, 316 317 { "priv_vfs_stickyfile_file_fother", 318 priv_vfs_stickyfile_file_fother_setup, 319 priv_vfs_stickyfile_file_fother, 320 priv_vfs_stickyfile_file_cleanup }, 321 322 { "priv_vfs_utimes_froot", priv_vfs_utimes_froot_setup, 323 priv_vfs_utimes_froot, priv_vfs_utimes_cleanup }, 324 325 { "priv_vfs_utimes_froot_null", priv_vfs_utimes_froot_setup, 326 priv_vfs_utimes_froot_null, priv_vfs_utimes_cleanup }, 327 328 { "priv_vfs_utimes_fowner", priv_vfs_utimes_fowner_setup, 329 priv_vfs_utimes_fowner, priv_vfs_utimes_cleanup }, 330 331 { "priv_vfs_utimes_fowner_null", priv_vfs_utimes_fowner_setup, 332 priv_vfs_utimes_fowner_null, priv_vfs_utimes_cleanup }, 333 334 { "priv_vfs_utimes_fother", priv_vfs_utimes_fother_setup, 335 priv_vfs_utimes_fother, priv_vfs_utimes_cleanup }, 336 337 { "priv_vfs_utimes_fother_null", priv_vfs_utimes_fother_setup, 338 priv_vfs_utimes_fother_null, priv_vfs_utimes_cleanup }, 339 340 { "priv_vm_madv_protect", priv_vm_madv_protect_setup, 341 priv_vm_madv_protect, priv_vm_madv_protect_cleanup }, 342 343 { "priv_vm_mlock", priv_vm_mlock_setup, priv_vm_mlock, 344 priv_vm_mlock_cleanup }, 345 346 { "priv_vm_munlock", priv_vm_munlock_setup, priv_vm_munlock, 347 priv_vm_munlock_cleanup }, 348 349 }; 350 static int tests_count = sizeof(tests) / sizeof(struct test); 351 352 void 353 expect(const char *test, int error, int expected_error, int expected_errno) 354 { 355 356 if (error == 0) { 357 if (expected_error != 0) 358 warnx("%s: returned 0", test); 359 } else { 360 if (expected_error == 0) 361 warn("%s: returned (%d, %d)", test, error, errno); 362 else if (expected_errno != errno) 363 warn("%s: returned (%d, %d)", test, error, errno); 364 } 365 } 366 367 void 368 setup_dir(const char *test, char *dpathp, uid_t uid, gid_t gid, mode_t mode) 369 { 370 371 strcpy(dpathp, "/tmp/priv.XXXXXXXXXXX"); 372 if (mkdtemp(dpathp) == NULL) 373 err(-1, "test %s: mkdtemp", test); 374 375 if (chown(dpathp, uid, gid) < 0) 376 err(-1, "test %s: chown(%s, %d, %d)", test, dpathp, uid, 377 gid); 378 379 if (chmod(dpathp, mode) < 0) 380 err(-1, "test %s: chmod(%s, 0%o)", test, dpathp, mode); 381 } 382 383 void 384 setup_file(const char *test, char *fpathp, uid_t uid, gid_t gid, mode_t mode) 385 { 386 int fd; 387 388 strcpy(fpathp, "/tmp/priv.XXXXXXXXXXX"); 389 fd = mkstemp(fpathp); 390 if (fd < 0) 391 err(-1, "test %s: mkstemp", test); 392 393 if (fchown(fd, uid, gid) < 0) 394 err(-1, "test %s: fchown(%s, %d, %d)", test, fpathp, uid, 395 gid); 396 397 if (fchmod(fd, mode) < 0) 398 err(-1, "test %s: chmod(%s, 0%o)", test, fpathp, mode); 399 400 close(fd); 401 } 402 403 /* 404 * Irrevocably set credentials to specific uid and gid. 405 */ 406 static void 407 set_creds(const char *test, uid_t uid, gid_t gid) 408 { 409 gid_t gids[1] = { gid }; 410 411 if (setgid(gid) < 0) 412 err(-1, "test %s: setegid(%d)", test, gid); 413 if (setgroups(sizeof(gids)/sizeof(gid_t), gids) < 0) 414 err(-1, "test %s: setgroups(%d)", test, gid); 415 if (setuid(uid) < 0) 416 err(-1, "test %s: seteuid(%d)", test, uid); 417 } 418 419 static void 420 enter_jail(const char *test) 421 { 422 struct jail j; 423 424 bzero(&j, sizeof(j)); 425 j.version = 0; 426 j.path = "/"; 427 j.hostname = "test"; 428 j.ip_number = htonl(INADDR_LOOPBACK); 429 if (jail(&j) < 0) 430 err(-1, "test %s: jail", test); 431 } 432 433 static void 434 run_child(struct test *test, int asroot, int injail) 435 { 436 437 setprogname(test->t_name); 438 if (injail) 439 enter_jail(test->t_name); 440 if (!asroot) 441 set_creds(test->t_name, UID_OWNER, GID_OWNER); 442 test->t_test_func(asroot, injail, test); 443 } 444 445 /* 446 * Run a test in a particular credential context -- always call the setup and 447 * cleanup routines; if setup succeeds, also run the test. Test cleanup must 448 * handle cases where the setup has failed, so may need to maintain their own 449 * state in order to know what needs cleaning up (such as whether temporary 450 * files were created). 451 */ 452 static void 453 run(struct test *test, int asroot, int injail) 454 { 455 pid_t childpid, pid; 456 457 if (test->t_setup_func != NULL) { 458 if ((test->t_setup_func)(asroot, injail, test) != 0) { 459 warnx("run(%s, %d, %d) setup failed", test->t_name, 460 asroot, injail); 461 goto cleanup; 462 } 463 } 464 fflush(stdout); 465 fflush(stderr); 466 childpid = fork(); 467 if (childpid == -1) { 468 warn("run(%s, %d, %d) fork failed", test->t_name, asroot, 469 injail); 470 goto cleanup; 471 } 472 if (childpid == 0) { 473 run_child(test, asroot, injail); 474 fflush(stdout); 475 fflush(stderr); 476 exit(0); 477 } else { 478 while (1) { 479 pid = waitpid(childpid, NULL, 0); 480 if (pid == -1) 481 warn("test: waitpid %s", test->t_name); 482 if (pid == childpid) 483 break; 484 } 485 } 486 fflush(stdout); 487 fflush(stderr); 488 cleanup: 489 if (test->t_cleanup_func != NULL) 490 test->t_cleanup_func(asroot, injail, test); 491 } 492 493 int 494 main(int argc, char *argv[]) 495 { 496 int i; 497 498 /* 499 * This test suite will need to become quite a bit more enlightened 500 * if the notion of privilege is truly separated from root, as tests 501 * make assumptions about when privilege will be present. In 502 * particular, VFS-related tests need to manage uids in order to 503 * force the use of privilege, and will likely need checking. 504 */ 505 if (getuid() != 0 && geteuid() != 0) 506 errx(-1, "priv: must be run as root"); 507 508 /* 509 * Run each test four times, varying whether the process is running 510 * as root and in jail in order to test all possible combinations. 511 */ 512 for (i = 0; i < tests_count; i++) { 513 run(&tests[i], 0, 0); 514 run(&tests[i], 0, 1); 515 run(&tests[i], 1, 0); 516 run(&tests[i], 1, 1); 517 } 518 return (0); 519 } 520