bsm_token.c revision 161635
1/* 2 * Copyright (c) 2004 Apple Computer, Inc. 3 * Copyright (c) 2005 SPARTA, Inc. 4 * All rights reserved. 5 * 6 * This code was developed in part by Robert N. M. Watson, Senior Principal 7 * Scientist, SPARTA, 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 * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of 18 * its contributors may be used to endorse or promote products derived 19 * from this software without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS 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 APPLE OR ITS CONTRIBUTORS BE LIABLE FOR 25 * 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, 29 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING 30 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 * POSSIBILITY OF SUCH DAMAGE. 32 * 33 * $P4: //depot/projects/trustedbsd/audit3/sys/security/audit/audit_bsm_token.c#23 $ 34 * $FreeBSD: head/sys/security/audit/audit_bsm_token.c 161635 2006-08-26 08:17:58Z rwatson $ 35 */ 36 37#include <sys/types.h> 38#include <sys/endian.h> 39#include <sys/queue.h> 40#include <sys/socket.h> 41#include <sys/time.h> 42 43#include <sys/ipc.h> 44#include <sys/libkern.h> 45#include <sys/malloc.h> 46#include <sys/un.h> 47 48#include <netinet/in.h> 49#include <netinet/in_systm.h> 50#include <netinet/ip.h> 51 52#include <sys/socketvar.h> 53 54#include <bsm/audit.h> 55#include <bsm/audit_internal.h> 56#include <bsm/audit_record.h> 57#include <security/audit/audit.h> 58#include <security/audit/audit_private.h> 59 60#define GET_TOKEN_AREA(t, dptr, length) do { \ 61 t = malloc(sizeof(token_t), M_AUDITBSM, M_WAITOK); \ 62 t->t_data = malloc(length, M_AUDITBSM, M_WAITOK | M_ZERO); \ 63 t->len = length; \ 64 dptr = t->t_data; \ 65} while (0) 66 67/* 68 * token ID 1 byte 69 * argument # 1 byte 70 * argument value 4 bytes/8 bytes (32-bit/64-bit value) 71 * text length 2 bytes 72 * text N bytes + 1 terminating NULL byte 73 */ 74token_t * 75au_to_arg32(char n, char *text, u_int32_t v) 76{ 77 token_t *t; 78 u_char *dptr = NULL; 79 u_int16_t textlen; 80 81 textlen = strlen(text); 82 textlen += 1; 83 84 GET_TOKEN_AREA(t, dptr, 2 * sizeof(u_char) + sizeof(u_int32_t) + 85 sizeof(u_int16_t) + textlen); 86 87 ADD_U_CHAR(dptr, AUT_ARG32); 88 ADD_U_CHAR(dptr, n); 89 ADD_U_INT32(dptr, v); 90 ADD_U_INT16(dptr, textlen); 91 ADD_STRING(dptr, text, textlen); 92 93 return (t); 94 95} 96 97token_t * 98au_to_arg64(char n, char *text, u_int64_t v) 99{ 100 token_t *t; 101 u_char *dptr = NULL; 102 u_int16_t textlen; 103 104 textlen = strlen(text); 105 textlen += 1; 106 107 GET_TOKEN_AREA(t, dptr, 2 * sizeof(u_char) + sizeof(u_int64_t) + 108 sizeof(u_int16_t) + textlen); 109 110 ADD_U_CHAR(dptr, AUT_ARG64); 111 ADD_U_CHAR(dptr, n); 112 ADD_U_INT64(dptr, v); 113 ADD_U_INT16(dptr, textlen); 114 ADD_STRING(dptr, text, textlen); 115 116 return (t); 117 118} 119 120token_t * 121au_to_arg(char n, char *text, u_int32_t v) 122{ 123 124 return (au_to_arg32(n, text, v)); 125} 126 127#if defined(_KERNEL) || defined(KERNEL) 128/* 129 * token ID 1 byte 130 * file access mode 4 bytes 131 * owner user ID 4 bytes 132 * owner group ID 4 bytes 133 * file system ID 4 bytes 134 * node ID 8 bytes 135 * device 4 bytes/8 bytes (32-bit/64-bit) 136 */ 137token_t * 138au_to_attr32(struct vnode_au_info *vni) 139{ 140 token_t *t; 141 u_char *dptr = NULL; 142 u_int16_t pad0_16 = 0; 143 u_int16_t pad0_32 = 0; 144 145 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 2 * sizeof(u_int16_t) + 146 3 * sizeof(u_int32_t) + sizeof(u_int64_t) + sizeof(u_int32_t)); 147 148 ADD_U_CHAR(dptr, AUT_ATTR32); 149 150 /* 151 * Darwin defines the size for the file mode 152 * as 2 bytes; BSM defines 4 so pad with 0 153 */ 154 ADD_U_INT16(dptr, pad0_16); 155 ADD_U_INT16(dptr, vni->vn_mode); 156 157 ADD_U_INT32(dptr, vni->vn_uid); 158 ADD_U_INT32(dptr, vni->vn_gid); 159 ADD_U_INT32(dptr, vni->vn_fsid); 160 161 /* 162 * Some systems use 32-bit file ID's, other's use 64-bit file IDs. 163 * Attempt to handle both, and let the compiler sort it out. If we 164 * could pick this out at compile-time, it would be better, so as to 165 * avoid the else case below. 166 */ 167 if (sizeof(vni->vn_fileid) == sizeof(uint32_t)) { 168 ADD_U_INT32(dptr, pad0_32); 169 ADD_U_INT32(dptr, vni->vn_fileid); 170 } else if (sizeof(vni->vn_fileid) == sizeof(uint64_t)) 171 ADD_U_INT64(dptr, vni->vn_fileid); 172 else 173 ADD_U_INT64(dptr, 0LL); 174 175 ADD_U_INT32(dptr, vni->vn_dev); 176 177 return (t); 178} 179 180token_t * 181au_to_attr64(struct vnode_au_info *vni) 182{ 183 184 return (NULL); 185} 186 187token_t * 188au_to_attr(struct vnode_au_info *vni) 189{ 190 191 return (au_to_attr32(vni)); 192} 193#endif /* !(defined(_KERNEL) || defined(KERNEL) */ 194 195/* 196 * token ID 1 byte 197 * how to print 1 byte 198 * basic unit 1 byte 199 * unit count 1 byte 200 * data items (depends on basic unit) 201 */ 202token_t * 203au_to_data(char unit_print, char unit_type, char unit_count, char *p) 204{ 205 token_t *t; 206 u_char *dptr = NULL; 207 size_t datasize, totdata; 208 209 /* Determine the size of the basic unit. */ 210 switch (unit_type) { 211 case AUR_BYTE: 212 /* case AUR_CHAR: */ 213 datasize = AUR_BYTE_SIZE; 214 break; 215 216 case AUR_SHORT: 217 datasize = AUR_SHORT_SIZE; 218 break; 219 220 case AUR_INT32: 221 /* case AUR_INT: */ 222 datasize = AUR_INT32_SIZE; 223 break; 224 225 case AUR_INT64: 226 datasize = AUR_INT64_SIZE; 227 break; 228 229 default: 230 return (NULL); 231 } 232 233 totdata = datasize * unit_count; 234 235 GET_TOKEN_AREA(t, dptr, 4 * sizeof(u_char) + totdata); 236 237 ADD_U_CHAR(dptr, AUT_DATA); 238 ADD_U_CHAR(dptr, unit_print); 239 ADD_U_CHAR(dptr, unit_type); 240 ADD_U_CHAR(dptr, unit_count); 241 ADD_MEM(dptr, p, totdata); 242 243 return (t); 244} 245 246 247/* 248 * token ID 1 byte 249 * status 4 bytes 250 * return value 4 bytes 251 */ 252token_t * 253au_to_exit(int retval, int err) 254{ 255 token_t *t; 256 u_char *dptr = NULL; 257 258 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 2 * sizeof(u_int32_t)); 259 260 ADD_U_CHAR(dptr, AUT_EXIT); 261 ADD_U_INT32(dptr, err); 262 ADD_U_INT32(dptr, retval); 263 264 return (t); 265} 266 267/* 268 */ 269token_t * 270au_to_groups(int *groups) 271{ 272 273 return (au_to_newgroups(AUDIT_MAX_GROUPS, groups)); 274} 275 276/* 277 * token ID 1 byte 278 * number groups 2 bytes 279 * group list count * 4 bytes 280 */ 281token_t * 282au_to_newgroups(u_int16_t n, gid_t *groups) 283{ 284 token_t *t; 285 u_char *dptr = NULL; 286 int i; 287 288 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t) + 289 n * sizeof(u_int32_t)); 290 291 ADD_U_CHAR(dptr, AUT_NEWGROUPS); 292 ADD_U_INT16(dptr, n); 293 for (i = 0; i < n; i++) 294 ADD_U_INT32(dptr, groups[i]); 295 296 return (t); 297} 298 299/* 300 * token ID 1 byte 301 * internet address 4 bytes 302 */ 303token_t * 304au_to_in_addr(struct in_addr *internet_addr) 305{ 306 token_t *t; 307 u_char *dptr = NULL; 308 309 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(uint32_t)); 310 311 ADD_U_CHAR(dptr, AUT_IN_ADDR); 312 ADD_MEM(dptr, &internet_addr->s_addr, sizeof(uint32_t)); 313 314 return (t); 315} 316 317/* 318 * token ID 1 byte 319 * address type/length 4 bytes 320 * Address 16 bytes 321 */ 322token_t * 323au_to_in_addr_ex(struct in6_addr *internet_addr) 324{ 325 token_t *t; 326 u_char *dptr = NULL; 327 u_int32_t type = AF_INET6; 328 329 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 5 * sizeof(uint32_t)); 330 331 ADD_U_CHAR(dptr, AUT_IN_ADDR_EX); 332 ADD_U_INT32(dptr, type); 333 ADD_MEM(dptr, internet_addr, 5 * sizeof(uint32_t)); 334 335 return (t); 336} 337 338/* 339 * token ID 1 byte 340 * ip header 20 bytes 341 */ 342token_t * 343au_to_ip(struct ip *ip) 344{ 345 token_t *t; 346 u_char *dptr = NULL; 347 348 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(struct ip)); 349 350 ADD_U_CHAR(dptr, AUT_IP); 351 /* 352 * XXXRW: Any byte order work needed on the IP header before writing? 353 */ 354 ADD_MEM(dptr, ip, sizeof(struct ip)); 355 356 return (t); 357} 358 359/* 360 * token ID 1 byte 361 * object ID type 1 byte 362 * object ID 4 bytes 363 */ 364token_t * 365au_to_ipc(char type, int id) 366{ 367 token_t *t; 368 u_char *dptr = NULL; 369 370 GET_TOKEN_AREA(t, dptr, 2 * sizeof(u_char) + sizeof(u_int32_t)); 371 372 ADD_U_CHAR(dptr, AUT_IPC); 373 ADD_U_CHAR(dptr, type); 374 ADD_U_INT32(dptr, id); 375 376 return (t); 377} 378 379/* 380 * token ID 1 byte 381 * owner user ID 4 bytes 382 * owner group ID 4 bytes 383 * creator user ID 4 bytes 384 * creator group ID 4 bytes 385 * access mode 4 bytes 386 * slot sequence # 4 bytes 387 * key 4 bytes 388 */ 389token_t * 390au_to_ipc_perm(struct ipc_perm *perm) 391{ 392 token_t *t; 393 u_char *dptr = NULL; 394 u_int16_t pad0 = 0; 395 396 GET_TOKEN_AREA(t, dptr, 12 * sizeof(u_int16_t) + sizeof(u_int32_t)); 397 398 ADD_U_CHAR(dptr, AUT_IPC_PERM); 399 400 /* 401 * Darwin defines the sizes for ipc_perm members 402 * as 2 bytes; BSM defines 4 so pad with 0 403 */ 404 ADD_U_INT16(dptr, pad0); 405 ADD_U_INT16(dptr, perm->uid); 406 407 ADD_U_INT16(dptr, pad0); 408 ADD_U_INT16(dptr, perm->gid); 409 410 ADD_U_INT16(dptr, pad0); 411 ADD_U_INT16(dptr, perm->cuid); 412 413 ADD_U_INT16(dptr, pad0); 414 ADD_U_INT16(dptr, perm->cgid); 415 416 ADD_U_INT16(dptr, pad0); 417 ADD_U_INT16(dptr, perm->mode); 418 419 ADD_U_INT16(dptr, pad0); 420 ADD_U_INT16(dptr, perm->seq); 421 422 ADD_U_INT32(dptr, perm->key); 423 424 return (t); 425} 426 427/* 428 * token ID 1 byte 429 * port IP address 2 bytes 430 */ 431token_t * 432au_to_iport(u_int16_t iport) 433{ 434 token_t *t; 435 u_char *dptr = NULL; 436 437 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t)); 438 439 ADD_U_CHAR(dptr, AUT_IPORT); 440 ADD_U_INT16(dptr, iport); 441 442 return (t); 443} 444 445/* 446 * token ID 1 byte 447 * size 2 bytes 448 * data size bytes 449 */ 450token_t * 451au_to_opaque(char *data, u_int16_t bytes) 452{ 453 token_t *t; 454 u_char *dptr = NULL; 455 456 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t) + bytes); 457 458 ADD_U_CHAR(dptr, AUT_OPAQUE); 459 ADD_U_INT16(dptr, bytes); 460 ADD_MEM(dptr, data, bytes); 461 462 return (t); 463} 464 465/* 466 * token ID 1 byte 467 * seconds of time 4 bytes 468 * milliseconds of time 4 bytes 469 * file name len 2 bytes 470 * file pathname N bytes + 1 terminating NULL byte 471 */ 472token_t * 473au_to_file(char *file, struct timeval tm) 474{ 475 token_t *t; 476 u_char *dptr = NULL; 477 u_int16_t filelen; 478 u_int32_t timems; 479 480 filelen = strlen(file); 481 filelen += 1; 482 483 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 2 * sizeof(u_int32_t) + 484 sizeof(u_int16_t) + filelen); 485 486 timems = tm.tv_usec/1000; 487 488 ADD_U_CHAR(dptr, AUT_OTHER_FILE32); 489 ADD_U_INT32(dptr, tm.tv_sec); 490 ADD_U_INT32(dptr, timems); /* We need time in ms. */ 491 ADD_U_INT16(dptr, filelen); 492 ADD_STRING(dptr, file, filelen); 493 494 return (t); 495} 496 497/* 498 * token ID 1 byte 499 * text length 2 bytes 500 * text N bytes + 1 terminating NULL byte 501 */ 502token_t * 503au_to_text(char *text) 504{ 505 token_t *t; 506 u_char *dptr = NULL; 507 u_int16_t textlen; 508 509 textlen = strlen(text); 510 textlen += 1; 511 512 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t) + textlen); 513 514 ADD_U_CHAR(dptr, AUT_TEXT); 515 ADD_U_INT16(dptr, textlen); 516 ADD_STRING(dptr, text, textlen); 517 518 return (t); 519} 520 521/* 522 * token ID 1 byte 523 * path length 2 bytes 524 * path N bytes + 1 terminating NULL byte 525 */ 526token_t * 527au_to_path(char *text) 528{ 529 token_t *t; 530 u_char *dptr = NULL; 531 u_int16_t textlen; 532 533 textlen = strlen(text); 534 textlen += 1; 535 536 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t) + textlen); 537 538 ADD_U_CHAR(dptr, AUT_PATH); 539 ADD_U_INT16(dptr, textlen); 540 ADD_STRING(dptr, text, textlen); 541 542 return (t); 543} 544 545/* 546 * token ID 1 byte 547 * audit ID 4 bytes 548 * effective user ID 4 bytes 549 * effective group ID 4 bytes 550 * real user ID 4 bytes 551 * real group ID 4 bytes 552 * process ID 4 bytes 553 * session ID 4 bytes 554 * terminal ID 555 * port ID 4 bytes/8 bytes (32-bit/64-bit value) 556 * machine address 4 bytes 557 */ 558token_t * 559au_to_process32(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, gid_t rgid, 560 pid_t pid, au_asid_t sid, au_tid_t *tid) 561{ 562 token_t *t; 563 u_char *dptr = NULL; 564 565 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 9 * sizeof(u_int32_t)); 566 567 ADD_U_CHAR(dptr, AUT_PROCESS32); 568 ADD_U_INT32(dptr, auid); 569 ADD_U_INT32(dptr, euid); 570 ADD_U_INT32(dptr, egid); 571 ADD_U_INT32(dptr, ruid); 572 ADD_U_INT32(dptr, rgid); 573 ADD_U_INT32(dptr, pid); 574 ADD_U_INT32(dptr, sid); 575 ADD_U_INT32(dptr, tid->port); 576 ADD_MEM(dptr, &tid->machine, sizeof(u_int32_t)); 577 578 return (t); 579} 580 581token_t * 582au_to_process64(__unused au_id_t auid, __unused uid_t euid, 583 __unused gid_t egid, __unused uid_t ruid, __unused gid_t rgid, 584 __unused pid_t pid, __unused au_asid_t sid, __unused au_tid_t *tid) 585{ 586 587 return (NULL); 588} 589 590token_t * 591au_to_process(__unused au_id_t auid, __unused uid_t euid, 592 __unused gid_t egid, __unused uid_t ruid, __unused gid_t rgid, 593 __unused pid_t pid, __unused au_asid_t sid, __unused au_tid_t *tid) 594{ 595 596 return (au_to_process32(auid, euid, egid, ruid, rgid, pid, sid, 597 tid)); 598} 599 600/* 601 * token ID 1 byte 602 * audit ID 4 bytes 603 * effective user ID 4 bytes 604 * effective group ID 4 bytes 605 * real user ID 4 bytes 606 * real group ID 4 bytes 607 * process ID 4 bytes 608 * session ID 4 bytes 609 * terminal ID 610 * port ID 4 bytes/8 bytes (32-bit/64-bit value) 611 * address type-len 4 bytes 612 * machine address 4/16 bytes 613 */ 614token_t * 615au_to_process32_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 616 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 617{ 618 token_t *t; 619 u_char *dptr = NULL; 620 621 if (tid->at_type == AU_IPv6) 622 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 13 * 623 sizeof(u_int32_t)); 624 else 625 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 10 * 626 sizeof(u_int32_t)); 627 628 ADD_U_CHAR(dptr, AUT_PROCESS32_EX); 629 ADD_U_INT32(dptr, auid); 630 ADD_U_INT32(dptr, euid); 631 ADD_U_INT32(dptr, egid); 632 ADD_U_INT32(dptr, ruid); 633 ADD_U_INT32(dptr, rgid); 634 ADD_U_INT32(dptr, pid); 635 ADD_U_INT32(dptr, sid); 636 ADD_U_INT32(dptr, tid->at_port); 637 ADD_U_INT32(dptr, tid->at_type); 638 ADD_U_INT32(dptr, tid->at_addr[0]); 639 if (tid->at_type == AU_IPv6) { 640 ADD_U_INT32(dptr, tid->at_addr[1]); 641 ADD_U_INT32(dptr, tid->at_addr[2]); 642 ADD_U_INT32(dptr, tid->at_addr[3]); 643 } 644 return (t); 645} 646 647token_t * 648au_to_process64_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 649 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 650{ 651 652 return (NULL); 653} 654 655token_t * 656au_to_process_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 657 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 658{ 659 660 return (au_to_process32_ex(auid, euid, egid, ruid, rgid, pid, sid, 661 tid)); 662} 663 664/* 665 * token ID 1 byte 666 * error status 1 byte 667 * return value 4 bytes/8 bytes (32-bit/64-bit value) 668 */ 669token_t * 670au_to_return32(char status, u_int32_t ret) 671{ 672 token_t *t; 673 u_char *dptr = NULL; 674 675 GET_TOKEN_AREA(t, dptr, 2 * sizeof(u_char) + sizeof(u_int32_t)); 676 677 ADD_U_CHAR(dptr, AUT_RETURN32); 678 ADD_U_CHAR(dptr, status); 679 ADD_U_INT32(dptr, ret); 680 681 return (t); 682} 683 684token_t * 685au_to_return64(char status, u_int64_t ret) 686{ 687 token_t *t; 688 u_char *dptr = NULL; 689 690 GET_TOKEN_AREA(t, dptr, 2 * sizeof(u_char) + sizeof(u_int64_t)); 691 692 ADD_U_CHAR(dptr, AUT_RETURN64); 693 ADD_U_CHAR(dptr, status); 694 ADD_U_INT64(dptr, ret); 695 696 return (t); 697} 698 699token_t * 700au_to_return(char status, u_int32_t ret) 701{ 702 703 return (au_to_return32(status, ret)); 704} 705 706/* 707 * token ID 1 byte 708 * sequence number 4 bytes 709 */ 710token_t * 711au_to_seq(long audit_count) 712{ 713 token_t *t; 714 u_char *dptr = NULL; 715 716 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int32_t)); 717 718 ADD_U_CHAR(dptr, AUT_SEQ); 719 ADD_U_INT32(dptr, audit_count); 720 721 return (t); 722} 723 724/* 725 * token ID 1 byte 726 * socket type 2 bytes 727 * local port 2 bytes 728 * local Internet address 4 bytes 729 * remote port 2 bytes 730 * remote Internet address 4 bytes 731 */ 732token_t * 733au_to_socket(struct socket *so) 734{ 735 736 /* XXXRW ... */ 737 return (NULL); 738} 739 740/* 741 * Kernel-specific version of the above function. 742 */ 743#ifdef _KERNEL 744token_t * 745kau_to_socket(struct socket_au_info *soi) 746{ 747 token_t *t; 748 u_char *dptr; 749 u_int16_t so_type; 750 751 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 2 * sizeof(u_int16_t) + 752 sizeof(u_int32_t) + sizeof(u_int16_t) + sizeof(u_int32_t)); 753 754 ADD_U_CHAR(dptr, AU_SOCK_TOKEN); 755 /* Coerce the socket type into a short value */ 756 so_type = soi->so_type; 757 ADD_U_INT16(dptr, so_type); 758 ADD_U_INT16(dptr, soi->so_lport); 759 ADD_U_INT32(dptr, soi->so_laddr); 760 ADD_U_INT16(dptr, soi->so_rport); 761 ADD_U_INT32(dptr, soi->so_raddr); 762 763 return (t); 764} 765#endif 766 767/* 768 * token ID 1 byte 769 * socket type 2 bytes 770 * local port 2 bytes 771 * address type/length 4 bytes 772 * local Internet address 4 bytes/16 bytes (IPv4/IPv6 address) 773 * remote port 4 bytes 774 * address type/length 4 bytes 775 * remote Internet address 4 bytes/16 bytes (IPv4/IPv6 address) 776 */ 777token_t * 778au_to_socket_ex_32(u_int16_t lp, u_int16_t rp, struct sockaddr *la, 779 struct sockaddr *ra) 780{ 781 782 return (NULL); 783} 784 785token_t * 786au_to_socket_ex_128(u_int16_t lp, u_int16_t rp, struct sockaddr *la, 787 struct sockaddr *ra) 788{ 789 790 return (NULL); 791} 792 793/* 794 * token ID 1 byte 795 * socket family 2 bytes 796 * path 104 bytes 797 */ 798token_t * 799au_to_sock_unix(struct sockaddr_un *so) 800{ 801 token_t *t; 802 u_char *dptr; 803 804 GET_TOKEN_AREA(t, dptr, 3 * sizeof(u_char) + strlen(so->sun_path) + 1); 805 806 ADD_U_CHAR(dptr, AU_SOCK_UNIX_TOKEN); 807 /* BSM token has two bytes for family */ 808 ADD_U_CHAR(dptr, 0); 809 ADD_U_CHAR(dptr, so->sun_family); 810 ADD_STRING(dptr, so->sun_path, strlen(so->sun_path) + 1); 811 812 return (t); 813} 814 815/* 816 * token ID 1 byte 817 * socket family 2 bytes 818 * local port 2 bytes 819 * socket address 4 bytes 820 */ 821token_t * 822au_to_sock_inet32(struct sockaddr_in *so) 823{ 824 token_t *t; 825 u_char *dptr = NULL; 826 uint16_t family; 827 828 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 2 * sizeof(uint16_t) + 829 sizeof(uint32_t)); 830 831 ADD_U_CHAR(dptr, AUT_SOCKINET32); 832 /* 833 * BSM defines the family field as 16 bits, but many operating 834 * systems have an 8-bit sin_family field. Extend to 16 bits before 835 * writing into the token. Assume that both the port and the address 836 * in the sockaddr_in are already in network byte order, but family 837 * is in local byte order. 838 * 839 * XXXRW: Should a name space conversion be taking place on the value 840 * of sin_family? 841 */ 842 family = so->sin_family; 843 ADD_U_INT16(dptr, family); 844 ADD_MEM(dptr, &so->sin_port, sizeof(uint16_t)); 845 ADD_MEM(dptr, &so->sin_addr.s_addr, sizeof(uint32_t)); 846 847 return (t); 848 849} 850 851token_t * 852au_to_sock_inet128(struct sockaddr_in6 *so) 853{ 854 token_t *t; 855 u_char *dptr = NULL; 856 857 GET_TOKEN_AREA(t, dptr, 3 * sizeof(u_char) + sizeof(u_int16_t) + 858 4 * sizeof(u_int32_t)); 859 860 ADD_U_CHAR(dptr, AUT_SOCKINET128); 861 /* 862 * In Darwin, sin6_family is one octet, but BSM defines the token 863 * to store two. So we copy in a 0 first. 864 */ 865 ADD_U_CHAR(dptr, 0); 866 ADD_U_CHAR(dptr, so->sin6_family); 867 868 ADD_U_INT16(dptr, so->sin6_port); 869 ADD_MEM(dptr, &so->sin6_addr, 4 * sizeof(uint32_t)); 870 871 return (t); 872 873} 874 875token_t * 876au_to_sock_inet(struct sockaddr_in *so) 877{ 878 879 return (au_to_sock_inet32(so)); 880} 881 882/* 883 * token ID 1 byte 884 * audit ID 4 bytes 885 * effective user ID 4 bytes 886 * effective group ID 4 bytes 887 * real user ID 4 bytes 888 * real group ID 4 bytes 889 * process ID 4 bytes 890 * session ID 4 bytes 891 * terminal ID 892 * port ID 4 bytes/8 bytes (32-bit/64-bit value) 893 * machine address 4 bytes 894 */ 895token_t * 896au_to_subject32(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, gid_t rgid, 897 pid_t pid, au_asid_t sid, au_tid_t *tid) 898{ 899 token_t *t; 900 u_char *dptr = NULL; 901 902 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 9 * sizeof(u_int32_t)); 903 904 ADD_U_CHAR(dptr, AUT_SUBJECT32); 905 ADD_U_INT32(dptr, auid); 906 ADD_U_INT32(dptr, euid); 907 ADD_U_INT32(dptr, egid); 908 ADD_U_INT32(dptr, ruid); 909 ADD_U_INT32(dptr, rgid); 910 ADD_U_INT32(dptr, pid); 911 ADD_U_INT32(dptr, sid); 912 ADD_U_INT32(dptr, tid->port); 913 ADD_MEM(dptr, &tid->machine, sizeof(u_int32_t)); 914 915 return (t); 916} 917 918token_t * 919au_to_subject64(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, gid_t rgid, 920 pid_t pid, au_asid_t sid, au_tid_t *tid) 921{ 922 923 return (NULL); 924} 925 926token_t * 927au_to_subject(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, gid_t rgid, 928 pid_t pid, au_asid_t sid, au_tid_t *tid) 929{ 930 931 return (au_to_subject32(auid, euid, egid, ruid, rgid, pid, sid, 932 tid)); 933} 934 935/* 936 * token ID 1 byte 937 * audit ID 4 bytes 938 * effective user ID 4 bytes 939 * effective group ID 4 bytes 940 * real user ID 4 bytes 941 * real group ID 4 bytes 942 * process ID 4 bytes 943 * session ID 4 bytes 944 * terminal ID 945 * port ID 4 bytes/8 bytes (32-bit/64-bit value) 946 * address type/length 4 bytes 947 * machine address 4/16 bytes 948 */ 949token_t * 950au_to_subject32_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 951 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 952{ 953 token_t *t; 954 u_char *dptr = NULL; 955 956 if (tid->at_type == AU_IPv6) 957 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 13 * 958 sizeof(u_int32_t)); 959 else 960 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + 10 * 961 sizeof(u_int32_t)); 962 963 ADD_U_CHAR(dptr, AUT_SUBJECT32_EX); 964 ADD_U_INT32(dptr, auid); 965 ADD_U_INT32(dptr, euid); 966 ADD_U_INT32(dptr, egid); 967 ADD_U_INT32(dptr, ruid); 968 ADD_U_INT32(dptr, rgid); 969 ADD_U_INT32(dptr, pid); 970 ADD_U_INT32(dptr, sid); 971 ADD_U_INT32(dptr, tid->at_port); 972 ADD_U_INT32(dptr, tid->at_type); 973 ADD_U_INT32(dptr, tid->at_addr[0]); 974 if (tid->at_type == AU_IPv6) { 975 ADD_U_INT32(dptr, tid->at_addr[1]); 976 ADD_U_INT32(dptr, tid->at_addr[2]); 977 ADD_U_INT32(dptr, tid->at_addr[3]); 978 } 979 return (t); 980} 981 982token_t * 983au_to_subject64_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 984 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 985{ 986 987 return (NULL); 988} 989 990token_t * 991au_to_subject_ex(au_id_t auid, uid_t euid, gid_t egid, uid_t ruid, 992 gid_t rgid, pid_t pid, au_asid_t sid, au_tid_addr_t *tid) 993{ 994 995 return (au_to_subject32_ex(auid, euid, egid, ruid, rgid, pid, sid, 996 tid)); 997} 998 999#if !defined(_KERNEL) && !defined(KERNEL) && defined(HAVE_AUDIT_SYSCALLS) 1000/* 1001 * Collects audit information for the current process 1002 * and creates a subject token from it 1003 */ 1004token_t * 1005au_to_me(void) 1006{ 1007 auditinfo_t auinfo; 1008 1009 if (getaudit(&auinfo) != 0) 1010 return (NULL); 1011 1012 return (au_to_subject32(auinfo.ai_auid, geteuid(), getegid(), 1013 getuid(), getgid(), getpid(), auinfo.ai_asid, &auinfo.ai_termid)); 1014} 1015#endif 1016 1017/* 1018 * token ID 1 byte 1019 * count 4 bytes 1020 * text count null-terminated strings 1021 */ 1022token_t * 1023au_to_exec_args(const char **args) 1024{ 1025 token_t *t; 1026 u_char *dptr = NULL; 1027 const char *nextarg; 1028 int i, count = 0; 1029 size_t totlen = 0; 1030 1031 nextarg = *args; 1032 1033 while (nextarg != NULL) { 1034 int nextlen; 1035 1036 nextlen = strlen(nextarg); 1037 totlen += nextlen + 1; 1038 count++; 1039 nextarg = *(args + count); 1040 } 1041 1042 totlen += count * sizeof(char); /* nul terminations. */ 1043 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int32_t) + totlen); 1044 1045 ADD_U_CHAR(dptr, AUT_EXEC_ARGS); 1046 ADD_U_INT32(dptr, count); 1047 1048 for (i = 0; i < count; i++) { 1049 nextarg = *(args + i); 1050 ADD_MEM(dptr, nextarg, strlen(nextarg) + 1); 1051 } 1052 1053 return (t); 1054} 1055 1056/* 1057 * token ID 1 byte 1058 * count 4 bytes 1059 * text count null-terminated strings 1060 */ 1061token_t * 1062au_to_exec_env(const char **env) 1063{ 1064 token_t *t; 1065 u_char *dptr = NULL; 1066 int i, count = 0; 1067 size_t totlen = 0; 1068 const char *nextenv; 1069 1070 nextenv = *env; 1071 1072 while (nextenv != NULL) { 1073 int nextlen; 1074 1075 nextlen = strlen(nextenv); 1076 totlen += nextlen + 1; 1077 count++; 1078 nextenv = *(env + count); 1079 } 1080 1081 totlen += sizeof(char) * count; 1082 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int32_t) + totlen); 1083 1084 ADD_U_CHAR(dptr, AUT_EXEC_ENV); 1085 ADD_U_INT32(dptr, count); 1086 1087 for (i = 0; i < count; i++) { 1088 nextenv = *(env + i); 1089 ADD_MEM(dptr, nextenv, strlen(nextenv) + 1); 1090 } 1091 1092 return (t); 1093} 1094 1095/* 1096 * token ID 1 byte 1097 * record byte count 4 bytes 1098 * version # 1 byte [2] 1099 * event type 2 bytes 1100 * event modifier 2 bytes 1101 * seconds of time 4 bytes/8 bytes (32-bit/64-bit value) 1102 * milliseconds of time 4 bytes/8 bytes (32-bit/64-bit value) 1103 */ 1104token_t * 1105au_to_header32_tm(int rec_size, au_event_t e_type, au_emod_t e_mod, 1106 struct timeval tm) 1107{ 1108 token_t *t; 1109 u_char *dptr = NULL; 1110 u_int32_t timems; 1111 1112 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int32_t) + 1113 sizeof(u_char) + 2 * sizeof(u_int16_t) + 2 * sizeof(u_int32_t)); 1114 1115 ADD_U_CHAR(dptr, AUT_HEADER32); 1116 ADD_U_INT32(dptr, rec_size); 1117 ADD_U_CHAR(dptr, AUDIT_HEADER_VERSION_OPENBSM); 1118 ADD_U_INT16(dptr, e_type); 1119 ADD_U_INT16(dptr, e_mod); 1120 1121 timems = tm.tv_usec/1000; 1122 /* Add the timestamp */ 1123 ADD_U_INT32(dptr, tm.tv_sec); 1124 ADD_U_INT32(dptr, timems); /* We need time in ms. */ 1125 1126 return (t); 1127} 1128 1129/* 1130 * token ID 1 byte 1131 * trailer magic number 2 bytes 1132 * record byte count 4 bytes 1133 */ 1134token_t * 1135au_to_trailer(int rec_size) 1136{ 1137 token_t *t; 1138 u_char *dptr = NULL; 1139 u_int16_t magic = TRAILER_PAD_MAGIC; 1140 1141 GET_TOKEN_AREA(t, dptr, sizeof(u_char) + sizeof(u_int16_t) + 1142 sizeof(u_int32_t)); 1143 1144 ADD_U_CHAR(dptr, AUT_TRAILER); 1145 ADD_U_INT16(dptr, magic); 1146 ADD_U_INT32(dptr, rec_size); 1147 1148 return (t); 1149} 1150