1 /* 2 * CDDL HEADER START 3 * 4 * The contents of this file are subject to the terms of the 5 * Common Development and Distribution License (the "License"). 6 * You may not use this file except in compliance with the License. 7 * 8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9 * or http://www.opensolaris.org/os/licensing. 10 * See the License for the specific language governing permissions 11 * and limitations under the License. 12 * 13 * When distributing Covered Code, include this CDDL HEADER in each 14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15 * If applicable, add the following below this CDDL HEADER, with the 16 * fields enclosed by brackets "[]" replaced with your own identifying 17 * information: Portions Copyright [yyyy] [name of copyright owner] 18 * 19 * CDDL HEADER END 20 */ 21 /* 22 * Copyright 2008 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /*LINTLIBRARY*/ 27 28 #include <grp.h> 29 #include <pwd.h> 30 #include <string.h> 31 #include <limits.h> 32 #include <stdlib.h> 33 #include <errno.h> 34 #include <sys/param.h> 35 #include <sys/types.h> 36 #include <sys/stat.h> 37 #include <sys/acl.h> 38 #include <aclutils.h> 39 #include <idmap.h> 40 41 #define ID_STR_MAX 20 /* digits in LONG_MAX */ 42 43 #define APPENDED_ID_MAX ID_STR_MAX + 1 /* id + colon */ 44 /* 45 * yyinteractive controls whether yyparse should print out 46 * error messages to stderr, and whether or not id's should be 47 * allowed from acl_fromtext(). 48 */ 49 int yyinteractive; 50 acl_t *yyacl; 51 char *yybuf; 52 53 extern acl_t *acl_alloc(enum acl_type); 54 55 /* 56 * dynamic string that will increase in size on an 57 * as needed basis. 58 */ 59 typedef struct dynaclstr { 60 size_t d_bufsize; /* current size of aclexport */ 61 char *d_aclexport; 62 int d_pos; 63 } dynaclstr_t; 64 65 static int str_append(dynaclstr_t *, char *); 66 static int aclent_perm_txt(dynaclstr_t *, o_mode_t); 67 68 static void 69 aclent_perms(int perm, char *txt_perms) 70 { 71 if (perm & S_IROTH) 72 txt_perms[0] = 'r'; 73 else 74 txt_perms[0] = '-'; 75 if (perm & S_IWOTH) 76 txt_perms[1] = 'w'; 77 else 78 txt_perms[1] = '-'; 79 if (perm & S_IXOTH) 80 txt_perms[2] = 'x'; 81 else 82 txt_perms[2] = '-'; 83 txt_perms[3] = '\0'; 84 } 85 86 static char * 87 pruname(uid_t uid, char *uidp, size_t buflen, int noresolve) 88 { 89 struct passwd *passwdp = NULL; 90 91 if (noresolve == 0) 92 passwdp = getpwuid(uid); 93 if (passwdp == (struct passwd *)NULL) { 94 /* could not get passwd information: display uid instead */ 95 (void) snprintf(uidp, buflen, "%u", uid); 96 } else { 97 (void) strlcpy(uidp, passwdp->pw_name, buflen); 98 } 99 return (uidp); 100 } 101 102 static char * 103 prgname(gid_t gid, char *gidp, size_t buflen, int noresolve) 104 { 105 struct group *groupp = NULL; 106 107 if (noresolve == 0) 108 groupp = getgrgid(gid); 109 if (groupp == (struct group *)NULL) { 110 /* could not get group information: display gid instead */ 111 (void) snprintf(gidp, buflen, "%u", gid); 112 } else { 113 (void) strlcpy(gidp, groupp->gr_name, buflen); 114 } 115 return (gidp); 116 } 117 118 static int 119 getsidname(uid_t who, boolean_t user, char **sidp, boolean_t noresolve) 120 { 121 idmap_handle_t *idmap_hdl = NULL; 122 idmap_get_handle_t *get_hdl = NULL; 123 idmap_stat status; 124 idmap_rid_t rid; 125 int error = IDMAP_ERR_NORESULT; 126 int len; 127 char *domain; 128 char *name; 129 130 *sidp = NULL; 131 132 /* 133 * First try and get windows name 134 */ 135 136 if (!noresolve) { 137 if (user) 138 error = idmap_getwinnamebyuid(who, 139 IDMAP_REQ_FLG_USE_CACHE, &name, &domain); 140 else 141 error = idmap_getwinnamebygid(who, 142 IDMAP_REQ_FLG_USE_CACHE, &name, &domain); 143 } 144 if (error != IDMAP_SUCCESS) { 145 if (idmap_init(&idmap_hdl) == IDMAP_SUCCESS && 146 idmap_get_create(idmap_hdl, &get_hdl) == IDMAP_SUCCESS) { 147 if (user) 148 error = idmap_get_sidbyuid(get_hdl, who, 149 IDMAP_REQ_FLG_USE_CACHE, &domain, &rid, 150 &status); 151 else 152 error = idmap_get_sidbygid(get_hdl, who, 153 IDMAP_REQ_FLG_USE_CACHE, &domain, &rid, 154 &status); 155 if (error == IDMAP_SUCCESS && 156 idmap_get_mappings(get_hdl) == 0) { 157 if (status == IDMAP_SUCCESS) { 158 len = snprintf(NULL, 0, 159 "%s-%d", domain, rid); 160 if (*sidp = malloc(len + 1)) { 161 (void) snprintf(*sidp, len + 1, 162 "%s-%d", domain, rid); 163 } 164 } 165 } 166 } 167 if (get_hdl) 168 idmap_get_destroy(get_hdl); 169 if (idmap_hdl) 170 (void) idmap_fini(idmap_hdl); 171 } else { 172 int len; 173 174 len = snprintf(NULL, 0, "%s@%s", name, domain); 175 if (*sidp = malloc(len + 1)) 176 (void) snprintf(*sidp, len + 1, "%s@%s", name, domain); 177 free(name); 178 free(domain); 179 } 180 return (*sidp ? 0 : 1); 181 } 182 183 static void 184 aclent_printacl(acl_t *aclp) 185 { 186 aclent_t *tp; 187 int aclcnt; 188 int mask; 189 int slot = 0; 190 char perm[4]; 191 char uidp[ID_STR_MAX]; 192 char gidp[ID_STR_MAX]; 193 194 /* display ACL: assume it is sorted. */ 195 aclcnt = aclp->acl_cnt; 196 for (tp = aclp->acl_aclp; tp && aclcnt--; tp++) { 197 if (tp->a_type == CLASS_OBJ) 198 mask = tp->a_perm; 199 } 200 aclcnt = aclp->acl_cnt; 201 for (tp = aclp->acl_aclp; aclcnt--; tp++) { 202 (void) printf(" %d:", slot++); 203 switch (tp->a_type) { 204 case USER: 205 aclent_perms(tp->a_perm, perm); 206 (void) printf("user:%s:%s\t\t", 207 pruname(tp->a_id, uidp, sizeof (uidp), 0), perm); 208 aclent_perms((tp->a_perm & mask), perm); 209 (void) printf("#effective:%s\n", perm); 210 break; 211 case USER_OBJ: 212 /* no need to display uid */ 213 aclent_perms(tp->a_perm, perm); 214 (void) printf("user::%s\n", perm); 215 break; 216 case GROUP: 217 aclent_perms(tp->a_perm, perm); 218 (void) printf("group:%s:%s\t\t", 219 prgname(tp->a_id, gidp, sizeof (gidp), 0), perm); 220 aclent_perms(tp->a_perm & mask, perm); 221 (void) printf("#effective:%s\n", perm); 222 break; 223 case GROUP_OBJ: 224 aclent_perms(tp->a_perm, perm); 225 (void) printf("group::%s\t\t", perm); 226 aclent_perms(tp->a_perm & mask, perm); 227 (void) printf("#effective:%s\n", perm); 228 break; 229 case CLASS_OBJ: 230 aclent_perms(tp->a_perm, perm); 231 (void) printf("mask:%s\n", perm); 232 break; 233 case OTHER_OBJ: 234 aclent_perms(tp->a_perm, perm); 235 (void) printf("other:%s\n", perm); 236 break; 237 case DEF_USER: 238 aclent_perms(tp->a_perm, perm); 239 (void) printf("default:user:%s:%s\n", 240 pruname(tp->a_id, uidp, sizeof (uidp), 0), perm); 241 break; 242 case DEF_USER_OBJ: 243 aclent_perms(tp->a_perm, perm); 244 (void) printf("default:user::%s\n", perm); 245 break; 246 case DEF_GROUP: 247 aclent_perms(tp->a_perm, perm); 248 (void) printf("default:group:%s:%s\n", 249 prgname(tp->a_id, gidp, sizeof (gidp), 0), perm); 250 break; 251 case DEF_GROUP_OBJ: 252 aclent_perms(tp->a_perm, perm); 253 (void) printf("default:group::%s\n", perm); 254 break; 255 case DEF_CLASS_OBJ: 256 aclent_perms(tp->a_perm, perm); 257 (void) printf("default:mask:%s\n", perm); 258 break; 259 case DEF_OTHER_OBJ: 260 aclent_perms(tp->a_perm, perm); 261 (void) printf("default:other:%s\n", perm); 262 break; 263 default: 264 (void) fprintf(stderr, 265 dgettext(TEXT_DOMAIN, "unrecognized entry\n")); 266 break; 267 } 268 } 269 } 270 271 static void 272 split_line(char *str, int cols) 273 { 274 char *ptr; 275 int len; 276 int i; 277 int last_split; 278 char *pad = ""; 279 int pad_len; 280 281 len = strlen(str); 282 ptr = str; 283 pad_len = 0; 284 285 ptr = str; 286 last_split = 0; 287 for (i = 0; i != len; i++) { 288 if ((i + pad_len + 4) >= cols) { 289 (void) printf("%s%.*s\n", pad, last_split, ptr); 290 ptr = &ptr[last_split]; 291 len = strlen(ptr); 292 i = 0; 293 pad_len = 4; 294 pad = " "; 295 } else { 296 if (ptr[i] == '/' || ptr[i] == ':') { 297 last_split = i; 298 } 299 } 300 } 301 if (i == len) { 302 (void) printf("%s%s\n", pad, ptr); 303 } 304 } 305 306 /* 307 * compute entry type string, such as user:joe, group:staff,... 308 */ 309 static int 310 aclent_type_txt(dynaclstr_t *dstr, aclent_t *aclp, int flags) 311 { 312 char idp[ID_STR_MAX]; 313 int error; 314 315 switch (aclp->a_type) { 316 case DEF_USER_OBJ: 317 case USER_OBJ: 318 if (aclp->a_type == USER_OBJ) 319 error = str_append(dstr, "user::"); 320 else 321 error = str_append(dstr, "defaultuser::"); 322 break; 323 324 case DEF_USER: 325 case USER: 326 if (aclp->a_type == USER) 327 error = str_append(dstr, "user:"); 328 else 329 error = str_append(dstr, "defaultuser:"); 330 if (error) 331 break; 332 error = str_append(dstr, pruname(aclp->a_id, idp, 333 sizeof (idp), flags & ACL_NORESOLVE)); 334 if (error == 0) 335 error = str_append(dstr, ":"); 336 break; 337 338 case DEF_GROUP_OBJ: 339 case GROUP_OBJ: 340 if (aclp->a_type == GROUP_OBJ) 341 error = str_append(dstr, "group::"); 342 else 343 error = str_append(dstr, "defaultgroup::"); 344 break; 345 346 case DEF_GROUP: 347 case GROUP: 348 if (aclp->a_type == GROUP) 349 error = str_append(dstr, "group:"); 350 else 351 error = str_append(dstr, "defaultgroup:"); 352 if (error) 353 break; 354 error = str_append(dstr, prgname(aclp->a_id, idp, 355 sizeof (idp), flags & ACL_NORESOLVE)); 356 if (error == 0) 357 error = str_append(dstr, ":"); 358 break; 359 360 case DEF_CLASS_OBJ: 361 case CLASS_OBJ: 362 if (aclp->a_type == CLASS_OBJ) 363 error = str_append(dstr, "mask:"); 364 else 365 error = str_append(dstr, "defaultmask:"); 366 break; 367 368 case DEF_OTHER_OBJ: 369 case OTHER_OBJ: 370 if (aclp->a_type == OTHER_OBJ) 371 error = str_append(dstr, "other:"); 372 else 373 error = str_append(dstr, "defaultother:"); 374 break; 375 376 default: 377 error = 1; 378 break; 379 } 380 381 return (error); 382 } 383 384 /* 385 * compute entry type string such as, owner@:, user:joe, group:staff,... 386 */ 387 static int 388 ace_type_txt(dynaclstr_t *dynstr, ace_t *acep, int flags) 389 { 390 char idp[ID_STR_MAX]; 391 int error; 392 char *sidp = NULL; 393 394 switch (acep->a_flags & ACE_TYPE_FLAGS) { 395 case ACE_OWNER: 396 error = str_append(dynstr, OWNERAT_TXT); 397 break; 398 399 case ACE_GROUP|ACE_IDENTIFIER_GROUP: 400 error = str_append(dynstr, GROUPAT_TXT); 401 break; 402 403 case ACE_IDENTIFIER_GROUP: 404 if ((flags & ACL_SID_FMT) && acep->a_who > MAXUID) { 405 if (error = str_append(dynstr, 406 GROUPSID_TXT)) 407 break; 408 if (error = getsidname(acep->a_who, B_FALSE, 409 &sidp, flags & ACL_NORESOLVE)) 410 break; 411 error = str_append(dynstr, sidp); 412 } else { 413 if (error = str_append(dynstr, GROUP_TXT)) 414 break; 415 error = str_append(dynstr, prgname(acep->a_who, idp, 416 sizeof (idp), flags & ACL_NORESOLVE)); 417 } 418 if (error == 0) 419 error = str_append(dynstr, ":"); 420 break; 421 422 case ACE_EVERYONE: 423 error = str_append(dynstr, EVERYONEAT_TXT); 424 break; 425 426 case 0: 427 if ((flags & ACL_SID_FMT) && acep->a_who > MAXUID) { 428 if (error = str_append(dynstr, USERSID_TXT)) 429 break; 430 if (error = getsidname(acep->a_who, B_TRUE, 431 &sidp, flags & ACL_NORESOLVE)) 432 break; 433 error = str_append(dynstr, sidp); 434 } else { 435 if (error = str_append(dynstr, USER_TXT)) 436 break; 437 error = str_append(dynstr, pruname(acep->a_who, idp, 438 sizeof (idp), flags & ACL_NORESOLVE)); 439 } 440 if (error == 0) 441 error = str_append(dynstr, ":"); 442 break; 443 default: 444 error = 0; 445 break; 446 } 447 448 if (sidp) 449 free(sidp); 450 return (error); 451 } 452 453 /* 454 * compute string of permissions, such as read_data/write_data or 455 * rwxp,... 456 * The format depends on the flags field which indicates whether the compact 457 * or verbose format should be used. 458 */ 459 static int 460 ace_perm_txt(dynaclstr_t *dstr, uint32_t mask, 461 uint32_t iflags, int isdir, int flags) 462 { 463 int error = 0; 464 465 if (flags & ACL_COMPACT_FMT) { 466 char buf[16]; 467 468 if (mask & ACE_READ_DATA) 469 buf[0] = 'r'; 470 else 471 buf[0] = '-'; 472 if (mask & ACE_WRITE_DATA) 473 buf[1] = 'w'; 474 else 475 buf[1] = '-'; 476 if (mask & ACE_EXECUTE) 477 buf[2] = 'x'; 478 else 479 buf[2] = '-'; 480 if (mask & ACE_APPEND_DATA) 481 buf[3] = 'p'; 482 else 483 buf[3] = '-'; 484 if (mask & ACE_DELETE) 485 buf[4] = 'd'; 486 else 487 buf[4] = '-'; 488 if (mask & ACE_DELETE_CHILD) 489 buf[5] = 'D'; 490 else 491 buf[5] = '-'; 492 if (mask & ACE_READ_ATTRIBUTES) 493 buf[6] = 'a'; 494 else 495 buf[6] = '-'; 496 if (mask & ACE_WRITE_ATTRIBUTES) 497 buf[7] = 'A'; 498 else 499 buf[7] = '-'; 500 if (mask & ACE_READ_NAMED_ATTRS) 501 buf[8] = 'R'; 502 else 503 buf[8] = '-'; 504 if (mask & ACE_WRITE_NAMED_ATTRS) 505 buf[9] = 'W'; 506 else 507 buf[9] = '-'; 508 if (mask & ACE_READ_ACL) 509 buf[10] = 'c'; 510 else 511 buf[10] = '-'; 512 if (mask & ACE_WRITE_ACL) 513 buf[11] = 'C'; 514 else 515 buf[11] = '-'; 516 if (mask & ACE_WRITE_OWNER) 517 buf[12] = 'o'; 518 else 519 buf[12] = '-'; 520 if (mask & ACE_SYNCHRONIZE) 521 buf[13] = 's'; 522 else 523 buf[13] = '-'; 524 buf[14] = ':'; 525 buf[15] = '\0'; 526 error = str_append(dstr, buf); 527 } else { 528 /* 529 * If ACE is a directory, but inheritance indicates its 530 * for a file then print permissions for file rather than 531 * dir. 532 */ 533 if (isdir) { 534 if (mask & ACE_LIST_DIRECTORY) { 535 if (iflags == ACE_FILE_INHERIT_ACE) { 536 error = str_append(dstr, 537 READ_DATA_TXT); 538 } else { 539 error = 540 str_append(dstr, READ_DIR_TXT); 541 } 542 } 543 if (error == 0 && (mask & ACE_ADD_FILE)) { 544 if (iflags == ACE_FILE_INHERIT_ACE) { 545 error = 546 str_append(dstr, WRITE_DATA_TXT); 547 } else { 548 error = 549 str_append(dstr, ADD_FILE_TXT); 550 } 551 } 552 if (error == 0 && (mask & ACE_ADD_SUBDIRECTORY)) { 553 if (iflags == ACE_FILE_INHERIT_ACE) { 554 error = str_append(dstr, 555 APPEND_DATA_TXT); 556 } else { 557 error = str_append(dstr, 558 ADD_DIR_TXT); 559 } 560 } 561 } else { 562 if (mask & ACE_READ_DATA) { 563 error = str_append(dstr, READ_DATA_TXT); 564 } 565 if (error == 0 && (mask & ACE_WRITE_DATA)) { 566 error = str_append(dstr, WRITE_DATA_TXT); 567 } 568 if (error == 0 && (mask & ACE_APPEND_DATA)) { 569 error = str_append(dstr, APPEND_DATA_TXT); 570 } 571 } 572 if (error == 0 && (mask & ACE_READ_NAMED_ATTRS)) { 573 error = str_append(dstr, READ_XATTR_TXT); 574 } 575 if (error == 0 && (mask & ACE_WRITE_NAMED_ATTRS)) { 576 error = str_append(dstr, WRITE_XATTR_TXT); 577 } 578 if (error == 0 && (mask & ACE_EXECUTE)) { 579 error = str_append(dstr, EXECUTE_TXT); 580 } 581 if (error == 0 && (mask & ACE_DELETE_CHILD)) { 582 error = str_append(dstr, DELETE_CHILD_TXT); 583 } 584 if (error == 0 && (mask & ACE_READ_ATTRIBUTES)) { 585 error = str_append(dstr, READ_ATTRIBUTES_TXT); 586 } 587 if (error == 0 && (mask & ACE_WRITE_ATTRIBUTES)) { 588 error = str_append(dstr, WRITE_ATTRIBUTES_TXT); 589 } 590 if (error == 0 && (mask & ACE_DELETE)) { 591 error = str_append(dstr, DELETE_TXT); 592 } 593 if (error == 0 && (mask & ACE_READ_ACL)) { 594 error = str_append(dstr, READ_ACL_TXT); 595 } 596 if (error == 0 && (mask & ACE_WRITE_ACL)) { 597 error = str_append(dstr, WRITE_ACL_TXT); 598 } 599 if (error == 0 && (mask & ACE_WRITE_OWNER)) { 600 error = str_append(dstr, WRITE_OWNER_TXT); 601 } 602 if (error == 0 && (mask & ACE_SYNCHRONIZE)) { 603 error = str_append(dstr, SYNCHRONIZE_TXT); 604 } 605 if (error == 0 && dstr->d_aclexport[dstr->d_pos-1] == '/') { 606 dstr->d_aclexport[--dstr->d_pos] = '\0'; 607 } 608 if (error == 0) 609 error = str_append(dstr, ":"); 610 } 611 return (error); 612 } 613 614 /* 615 * compute string of access type, such as allow, deny, ... 616 */ 617 static int 618 ace_access_txt(dynaclstr_t *dstr, int type) 619 { 620 int error; 621 622 if (type == ACE_ACCESS_ALLOWED_ACE_TYPE) 623 error = str_append(dstr, ALLOW_TXT); 624 else if (type == ACE_ACCESS_DENIED_ACE_TYPE) 625 error = str_append(dstr, DENY_TXT); 626 else if (type == ACE_SYSTEM_AUDIT_ACE_TYPE) 627 error = str_append(dstr, AUDIT_TXT); 628 else if (type == ACE_SYSTEM_ALARM_ACE_TYPE) 629 error = str_append(dstr, ALARM_TXT); 630 else 631 error = str_append(dstr, UNKNOWN_TXT); 632 633 return (error); 634 } 635 636 static int 637 ace_inherit_txt(dynaclstr_t *dstr, uint32_t iflags, int flags) 638 { 639 int error = 0; 640 641 if (flags & ACL_COMPACT_FMT) { 642 char buf[9]; 643 644 if (iflags & ACE_FILE_INHERIT_ACE) 645 buf[0] = 'f'; 646 else 647 buf[0] = '-'; 648 if (iflags & ACE_DIRECTORY_INHERIT_ACE) 649 buf[1] = 'd'; 650 else 651 buf[1] = '-'; 652 if (iflags & ACE_INHERIT_ONLY_ACE) 653 buf[2] = 'i'; 654 else 655 buf[2] = '-'; 656 if (iflags & ACE_NO_PROPAGATE_INHERIT_ACE) 657 buf[3] = 'n'; 658 else 659 buf[3] = '-'; 660 if (iflags & ACE_SUCCESSFUL_ACCESS_ACE_FLAG) 661 buf[4] = 'S'; 662 else 663 buf[4] = '-'; 664 if (iflags & ACE_FAILED_ACCESS_ACE_FLAG) 665 buf[5] = 'F'; 666 else 667 buf[5] = '-'; 668 if (iflags & ACE_INHERITED_ACE) 669 buf[6] = 'I'; 670 else 671 buf[6] = '-'; 672 buf[7] = ':'; 673 buf[8] = '\0'; 674 error = str_append(dstr, buf); 675 } else { 676 if (iflags & ACE_FILE_INHERIT_ACE) { 677 error = str_append(dstr, FILE_INHERIT_TXT); 678 } 679 if (error == 0 && (iflags & ACE_DIRECTORY_INHERIT_ACE)) { 680 error = str_append(dstr, DIR_INHERIT_TXT); 681 } 682 if (error == 0 && (iflags & ACE_NO_PROPAGATE_INHERIT_ACE)) { 683 error = str_append(dstr, NO_PROPAGATE_TXT); 684 } 685 if (error == 0 && (iflags & ACE_INHERIT_ONLY_ACE)) { 686 error = str_append(dstr, INHERIT_ONLY_TXT); 687 } 688 if (error == 0 && (iflags & ACE_SUCCESSFUL_ACCESS_ACE_FLAG)) { 689 error = str_append(dstr, SUCCESSFUL_ACCESS_TXT); 690 } 691 if (error == 0 && (iflags & ACE_FAILED_ACCESS_ACE_FLAG)) { 692 error = str_append(dstr, FAILED_ACCESS_TXT); 693 } 694 if (error == 0 && (iflags & ACE_INHERITED_ACE)) { 695 error = str_append(dstr, INHERITED_ACE_TXT); 696 } 697 if (error == 0 && dstr->d_aclexport[dstr->d_pos-1] == '/') { 698 dstr->d_aclexport[--dstr->d_pos] = '\0'; 699 error = str_append(dstr, ":"); 700 } 701 } 702 703 return (error); 704 } 705 706 /* 707 * Convert internal acl representation to external representation. 708 * 709 * The length of a non-owning user name or non-owning group name ie entries 710 * of type DEF_USER, USER, DEF_GROUP or GROUP, can exceed LOGNAME_MAX. We 711 * thus check the length of these entries, and if greater than LOGNAME_MAX, 712 * we realloc() via increase_length(). 713 * 714 * The LOGNAME_MAX, ENTRYTYPELEN and PERMS limits are otherwise always 715 * adhered to. 716 */ 717 718 /* 719 * acltotext() converts each ACL entry to look like this: 720 * 721 * entry_type:uid^gid^name:perms[:id] 722 * 723 * The maximum length of entry_type is 14 ("defaultgroup::" and 724 * "defaultother::") hence ENTRYTYPELEN is set to 14. 725 * 726 * The max length of a uid^gid^name entry (in theory) is 8, hence we use, 727 * however the ID could be a number so we therefore use ID_STR_MAX 728 * 729 * The length of a perms entry is 4 to allow for the comma appended to each 730 * to each acl entry. Hence PERMS is set to 4. 731 */ 732 733 #define ENTRYTYPELEN 14 734 #define PERMS 4 735 #define ACL_ENTRY_SIZE (ENTRYTYPELEN + ID_STR_MAX + PERMS + APPENDED_ID_MAX) 736 737 char * 738 aclent_acltotext(aclent_t *aclp, int aclcnt, int flags) 739 { 740 dynaclstr_t *dstr; 741 char *aclexport = NULL; 742 int i; 743 int error = 0; 744 745 if (aclp == NULL) 746 return (NULL); 747 if ((dstr = malloc(sizeof (dynaclstr_t))) == NULL) 748 return (NULL); 749 dstr->d_bufsize = aclcnt * ACL_ENTRY_SIZE; 750 if ((dstr->d_aclexport = malloc(dstr->d_bufsize)) == NULL) { 751 free(dstr); 752 return (NULL); 753 } 754 *dstr->d_aclexport = '\0'; 755 dstr->d_pos = 0; 756 757 for (i = 0; i < aclcnt; i++, aclp++) { 758 if (error = aclent_type_txt(dstr, aclp, flags)) 759 break; 760 if (error = aclent_perm_txt(dstr, aclp->a_perm)) 761 break; 762 763 if ((flags & ACL_APPEND_ID) && ((aclp->a_type == USER) || 764 (aclp->a_type == DEF_USER) || (aclp->a_type == GROUP) || 765 (aclp->a_type == DEF_GROUP))) { 766 char id[ID_STR_MAX], *idstr; 767 768 if (error = str_append(dstr, ":")) 769 break; 770 id[ID_STR_MAX - 1] = '\0'; /* null terminate buffer */ 771 idstr = lltostr(aclp->a_id, &id[ID_STR_MAX - 1]); 772 if (error = str_append(dstr, idstr)) 773 break; 774 } 775 if (i < aclcnt - 1) 776 if (error = str_append(dstr, ",")) 777 break; 778 } 779 if (error) { 780 if (dstr->d_aclexport) 781 free(dstr->d_aclexport); 782 } else { 783 aclexport = dstr->d_aclexport; 784 } 785 free(dstr); 786 return (aclexport); 787 } 788 789 char * 790 acltotext(aclent_t *aclp, int aclcnt) 791 { 792 return (aclent_acltotext(aclp, aclcnt, 0)); 793 } 794 795 796 aclent_t * 797 aclfromtext(char *aclstr, int *aclcnt) 798 { 799 acl_t *aclp; 800 aclent_t *aclentp; 801 int error; 802 803 error = acl_fromtext(aclstr, &aclp); 804 if (error) 805 return (NULL); 806 807 aclentp = aclp->acl_aclp; 808 aclp->acl_aclp = NULL; 809 *aclcnt = aclp->acl_cnt; 810 811 acl_free(aclp); 812 return (aclentp); 813 } 814 815 816 /* 817 * Append string onto dynaclstr_t. 818 * 819 * Return 0 on success, 1 for failure. 820 */ 821 static int 822 str_append(dynaclstr_t *dstr, char *newstr) 823 { 824 size_t len = strlen(newstr); 825 826 if ((len + dstr->d_pos) >= dstr->d_bufsize) { 827 dstr->d_aclexport = realloc(dstr->d_aclexport, 828 dstr->d_bufsize + len + 1); 829 if (dstr->d_aclexport == NULL) 830 return (1); 831 dstr->d_bufsize += len; 832 } 833 (void) strcat(&dstr->d_aclexport[dstr->d_pos], newstr); 834 dstr->d_pos += len; 835 return (0); 836 } 837 838 static int 839 aclent_perm_txt(dynaclstr_t *dstr, o_mode_t perm) 840 { 841 char buf[4]; 842 843 if (perm & S_IROTH) 844 buf[0] = 'r'; 845 else 846 buf[0] = '-'; 847 if (perm & S_IWOTH) 848 buf[1] = 'w'; 849 else 850 buf[1] = '-'; 851 if (perm & S_IXOTH) 852 buf[2] = 'x'; 853 else 854 buf[2] = '-'; 855 buf[3] = '\0'; 856 return (str_append(dstr, buf)); 857 } 858 859 /* 860 * ace_acltotext() convert each ace formatted acl to look like this: 861 * 862 * entry_type:uid^gid^name:perms[:flags]:<allow|deny>[:id][,] 863 * 864 * The maximum length of entry_type is 5 ("group") 865 * 866 * The max length of a uid^gid^name entry (in theory) is 8, 867 * however id could be a number so we therefore use ID_STR_MAX 868 * 869 * The length of a perms entry is 144 i.e read_data/write_data... 870 * to each acl entry. 871 * 872 * iflags: file_inherit/dir_inherit/inherit_only/no_propagate/successful_access 873 * /failed_access 874 * 875 */ 876 877 #define ACE_ENTRYTYPLEN 6 878 #define IFLAGS_STR "file_inherit/dir_inherit/inherit_only/no_propagate/" \ 879 "successful_access/failed_access/inherited" 880 #define IFLAGS_SIZE (sizeof (IFLAGS_STR) - 1) 881 #define ACCESS_TYPE_SIZE 7 /* if unknown */ 882 #define COLON_CNT 3 883 #define PERMS_LEN 216 884 #define ACE_ENTRY_SIZE (ACE_ENTRYTYPLEN + ID_STR_MAX + PERMS_LEN + \ 885 ACCESS_TYPE_SIZE + IFLAGS_SIZE + COLON_CNT + APPENDED_ID_MAX) 886 887 static char * 888 ace_acltotext(acl_t *aceaclp, int flags) 889 { 890 ace_t *aclp = aceaclp->acl_aclp; 891 int aclcnt = aceaclp->acl_cnt; 892 int i; 893 int error = 0; 894 int isdir = (aceaclp->acl_flags & ACL_IS_DIR); 895 dynaclstr_t *dstr; 896 char *aclexport = NULL; 897 898 if (aclp == NULL) 899 return (NULL); 900 901 if ((dstr = malloc(sizeof (dynaclstr_t))) == NULL) 902 return (NULL); 903 dstr->d_bufsize = aclcnt * ACL_ENTRY_SIZE; 904 if ((dstr->d_aclexport = malloc(dstr->d_bufsize)) == NULL) { 905 free(dstr); 906 return (NULL); 907 } 908 *dstr->d_aclexport = '\0'; 909 dstr->d_pos = 0; 910 911 for (i = 0; i < aclcnt; i++, aclp++) { 912 913 if (error = ace_type_txt(dstr, aclp, flags)) 914 break; 915 if (error = ace_perm_txt(dstr, aclp->a_access_mask, 916 aclp->a_flags, isdir, flags)) 917 break; 918 if (error = ace_inherit_txt(dstr, aclp->a_flags, flags)) 919 break; 920 if (error = ace_access_txt(dstr, aclp->a_type)) 921 break; 922 923 if ((flags & ACL_APPEND_ID) && 924 (((aclp->a_flags & ACE_TYPE_FLAGS) == 0) || 925 ((aclp->a_flags & ACE_TYPE_FLAGS) == 926 ACE_IDENTIFIER_GROUP))) { 927 char id[ID_STR_MAX], *idstr; 928 char *rawsidp; 929 930 if (error = str_append(dstr, ":")) 931 break; 932 933 rawsidp = NULL; 934 id[ID_STR_MAX -1] = '\0'; /* null terminate */ 935 if (aclp->a_who > MAXUID && (flags & ACL_SID_FMT)) { 936 937 error = getsidname(aclp->a_who, 938 ((aclp->a_flags & ACE_TYPE_FLAGS) == 0) ? 939 B_TRUE : B_FALSE, &idstr, 1); 940 if (error) 941 break; 942 rawsidp = idstr; 943 } else if (aclp->a_who > MAXUID && 944 !(flags & ACL_NORESOLVE)) { 945 idstr = lltostr(UID_NOBODY, 946 &id[ID_STR_MAX - 1]); 947 } else { 948 idstr = lltostr(aclp->a_who, 949 &id[ID_STR_MAX - 1]); 950 } 951 if (error = str_append(dstr, idstr)) 952 break; 953 if (rawsidp) 954 free(rawsidp); 955 } 956 if (i < aclcnt - 1) { 957 if (error = str_append(dstr, ",")) 958 break; 959 } 960 } 961 if (error) { 962 if (dstr->d_aclexport) 963 free(dstr->d_aclexport); 964 } else { 965 aclexport = dstr->d_aclexport; 966 } 967 free(dstr); 968 return (aclexport); 969 } 970 971 char * 972 acl_totext(acl_t *aclp, int flags) 973 { 974 char *txtp; 975 976 if (aclp == NULL) 977 return (NULL); 978 979 switch (aclp->acl_type) { 980 case ACE_T: 981 txtp = ace_acltotext(aclp, flags); 982 break; 983 case ACLENT_T: 984 txtp = aclent_acltotext(aclp->acl_aclp, aclp->acl_cnt, flags); 985 break; 986 } 987 988 return (txtp); 989 } 990 991 int 992 acl_fromtext(const char *acltextp, acl_t **ret_aclp) 993 { 994 int error; 995 char *buf; 996 997 buf = malloc(strlen(acltextp) + 2); 998 if (buf == NULL) 999 return (EACL_MEM_ERROR); 1000 strcpy(buf, acltextp); 1001 strcat(buf, "\n"); 1002 yybuf = buf; 1003 yyreset(); 1004 error = yyparse(); 1005 free(buf); 1006 1007 if (yyacl) { 1008 if (error == 0) 1009 *ret_aclp = yyacl; 1010 else { 1011 acl_free(yyacl); 1012 } 1013 yyacl = NULL; 1014 } 1015 return (error); 1016 } 1017 1018 int 1019 acl_parse(const char *acltextp, acl_t **aclp) 1020 { 1021 int error; 1022 1023 yyinteractive = 1; 1024 error = acl_fromtext(acltextp, aclp); 1025 yyinteractive = 0; 1026 return (error); 1027 } 1028 1029 static void 1030 ace_compact_printacl(acl_t *aclp) 1031 { 1032 int cnt; 1033 ace_t *acep; 1034 dynaclstr_t *dstr; 1035 int len; 1036 1037 if ((dstr = malloc(sizeof (dynaclstr_t))) == NULL) 1038 return; 1039 dstr->d_bufsize = ACE_ENTRY_SIZE; 1040 if ((dstr->d_aclexport = malloc(dstr->d_bufsize)) == NULL) { 1041 free(dstr); 1042 return; 1043 } 1044 *dstr->d_aclexport = '\0'; 1045 1046 dstr->d_pos = 0; 1047 for (cnt = 0, acep = aclp->acl_aclp; 1048 cnt != aclp->acl_cnt; cnt++, acep++) { 1049 dstr->d_aclexport[0] = '\0'; 1050 dstr->d_pos = 0; 1051 1052 if (ace_type_txt(dstr, acep, 0)) 1053 break; 1054 len = strlen(&dstr->d_aclexport[0]); 1055 if (ace_perm_txt(dstr, acep->a_access_mask, acep->a_flags, 1056 aclp->acl_flags & ACL_IS_DIR, ACL_COMPACT_FMT)) 1057 break; 1058 if (ace_inherit_txt(dstr, acep->a_flags, ACL_COMPACT_FMT)) 1059 break; 1060 if (ace_access_txt(dstr, acep->a_type) == -1) 1061 break; 1062 (void) printf(" %20.*s%s\n", len, dstr->d_aclexport, 1063 &dstr->d_aclexport[len]); 1064 } 1065 1066 if (dstr->d_aclexport) 1067 free(dstr->d_aclexport); 1068 free(dstr); 1069 } 1070 1071 static void 1072 ace_printacl(acl_t *aclp, int cols, int compact) 1073 { 1074 int slot = 0; 1075 char *token; 1076 char *acltext; 1077 1078 if (compact) { 1079 ace_compact_printacl(aclp); 1080 return; 1081 } 1082 1083 acltext = acl_totext(aclp, 0); 1084 1085 if (acltext == NULL) 1086 return; 1087 1088 token = strtok(acltext, ","); 1089 if (token == NULL) { 1090 free(acltext); 1091 return; 1092 } 1093 1094 do { 1095 (void) printf(" %d:", slot++); 1096 split_line(token, cols - 5); 1097 } while (token = strtok(NULL, ",")); 1098 free(acltext); 1099 } 1100 1101 /* 1102 * pretty print an ACL. 1103 * For aclent_t ACL's the format is 1104 * similar to the old format used by getfacl, 1105 * with the addition of adding a "slot" number 1106 * before each entry. 1107 * 1108 * for ace_t ACL's the cols variable will break up 1109 * the long lines into multiple lines and will also 1110 * print a "slot" number. 1111 */ 1112 void 1113 acl_printacl(acl_t *aclp, int cols, int compact) 1114 { 1115 1116 switch (aclp->acl_type) { 1117 case ACLENT_T: 1118 aclent_printacl(aclp); 1119 break; 1120 case ACE_T: 1121 ace_printacl(aclp, cols, compact); 1122 break; 1123 } 1124 } 1125 1126 typedef struct value_table { 1127 char p_letter; /* perm letter such as 'r' */ 1128 uint32_t p_value; /* value for perm when pletter found */ 1129 } value_table_t; 1130 1131 /* 1132 * The permission tables are laid out in positional order 1133 * a '-' character will indicate a permission at a given 1134 * position is not specified. The '-' is not part of the 1135 * table, but will be checked for in the permission computation 1136 * routine. 1137 */ 1138 value_table_t ace_perm_table[] = { 1139 { 'r', ACE_READ_DATA}, 1140 { 'w', ACE_WRITE_DATA}, 1141 { 'x', ACE_EXECUTE}, 1142 { 'p', ACE_APPEND_DATA}, 1143 { 'd', ACE_DELETE}, 1144 { 'D', ACE_DELETE_CHILD}, 1145 { 'a', ACE_READ_ATTRIBUTES}, 1146 { 'A', ACE_WRITE_ATTRIBUTES}, 1147 { 'R', ACE_READ_NAMED_ATTRS}, 1148 { 'W', ACE_WRITE_NAMED_ATTRS}, 1149 { 'c', ACE_READ_ACL}, 1150 { 'C', ACE_WRITE_ACL}, 1151 { 'o', ACE_WRITE_OWNER}, 1152 { 's', ACE_SYNCHRONIZE} 1153 }; 1154 1155 #define ACE_PERM_COUNT (sizeof (ace_perm_table) / sizeof (value_table_t)) 1156 1157 value_table_t aclent_perm_table[] = { 1158 { 'r', S_IROTH}, 1159 { 'w', S_IWOTH}, 1160 { 'x', S_IXOTH} 1161 }; 1162 1163 #define ACLENT_PERM_COUNT (sizeof (aclent_perm_table) / sizeof (value_table_t)) 1164 1165 value_table_t inherit_table[] = { 1166 {'f', ACE_FILE_INHERIT_ACE}, 1167 {'d', ACE_DIRECTORY_INHERIT_ACE}, 1168 {'i', ACE_INHERIT_ONLY_ACE}, 1169 {'n', ACE_NO_PROPAGATE_INHERIT_ACE}, 1170 {'S', ACE_SUCCESSFUL_ACCESS_ACE_FLAG}, 1171 {'F', ACE_FAILED_ACCESS_ACE_FLAG}, 1172 {'I', ACE_INHERITED_ACE} 1173 }; 1174 1175 #define IFLAG_COUNT (sizeof (inherit_table) / sizeof (value_table_t)) 1176 #define IFLAG_COUNT_V1 6 /* Older version compatibility */ 1177 1178 /* 1179 * compute value from a permission table or inheritance table 1180 * based on string passed in. If positional is set then 1181 * string must match order in permtab, otherwise any order 1182 * is allowed. 1183 */ 1184 int 1185 compute_values(value_table_t *permtab, int count, 1186 char *permstr, int positional, uint32_t *mask) 1187 { 1188 uint32_t perm_val = 0; 1189 char *pstr; 1190 int i, found; 1191 1192 if (count < 0) 1193 return (1); 1194 1195 if (positional) { 1196 for (i = 0, pstr = permstr; i != count && pstr && 1197 *pstr; i++, pstr++) { 1198 if (*pstr == permtab[i].p_letter) { 1199 perm_val |= permtab[i].p_value; 1200 } else if (*pstr != '-') { 1201 return (1); 1202 } 1203 } 1204 } else { /* random order single letters with no '-' */ 1205 for (pstr = permstr; pstr && *pstr; pstr++) { 1206 for (found = 0, i = 0; i != count; i++) { 1207 if (*pstr == permtab[i].p_letter) { 1208 perm_val |= permtab[i].p_value; 1209 found = 1; 1210 break; 1211 } 1212 } 1213 if (found == 0) 1214 return (1); 1215 } 1216 } 1217 1218 *mask = perm_val; 1219 return (0); 1220 } 1221 1222 1223 int 1224 ace_inherit_helper(char *str, uint32_t *imask, int table_length) 1225 { 1226 int rc = 0; 1227 1228 if (strlen(str) == table_length) { 1229 /* 1230 * If the string == table_length then first check to see it's 1231 * in positional format. If that fails then see if it's in 1232 * non-positional format. 1233 */ 1234 if (compute_values(inherit_table, table_length, str, 1235 1, imask) && compute_values(inherit_table, 1236 table_length, str, 0, imask)) { 1237 rc = 1; 1238 } 1239 } else { 1240 rc = compute_values(inherit_table, table_length, str, 0, imask); 1241 } 1242 1243 return (rc ? EACL_INHERIT_ERROR : 0); 1244 } 1245 1246 /* 1247 * compute value for inheritance flags. 1248 */ 1249 int 1250 compute_ace_inherit(char *str, uint32_t *imask) 1251 { 1252 int rc = 0; 1253 1254 rc = ace_inherit_helper(str, imask, IFLAG_COUNT); 1255 1256 if (rc && strlen(str) != IFLAG_COUNT) { 1257 1258 /* is it an old formatted inherit string? */ 1259 rc = ace_inherit_helper(str, imask, IFLAG_COUNT_V1); 1260 } 1261 1262 return (rc); 1263 } 1264 1265 1266 /* 1267 * compute value for ACE permissions. 1268 */ 1269 int 1270 compute_ace_perms(char *str, uint32_t *mask) 1271 { 1272 int positional = 0; 1273 int error; 1274 1275 if (strlen(str) == ACE_PERM_COUNT) 1276 positional = 1; 1277 1278 error = compute_values(ace_perm_table, ACE_PERM_COUNT, 1279 str, positional, mask); 1280 1281 if (error && positional) { 1282 /* 1283 * If positional was set, then make sure permissions 1284 * aren't actually valid in non positional case where 1285 * all permissions are specified, just in random order. 1286 */ 1287 error = compute_values(ace_perm_table, 1288 ACE_PERM_COUNT, str, 0, mask); 1289 } 1290 if (error) 1291 error = EACL_PERM_MASK_ERROR; 1292 1293 return (error); 1294 } 1295 1296 1297 1298 /* 1299 * compute values for aclent permissions. 1300 */ 1301 int 1302 compute_aclent_perms(char *str, o_mode_t *mask) 1303 { 1304 int error; 1305 uint32_t pmask; 1306 1307 if (strlen(str) != ACLENT_PERM_COUNT) 1308 return (EACL_PERM_MASK_ERROR); 1309 1310 *mask = 0; 1311 error = compute_values(aclent_perm_table, ACLENT_PERM_COUNT, 1312 str, 1, &pmask); 1313 if (error == 0) { 1314 *mask = (o_mode_t)pmask; 1315 } else 1316 error = EACL_PERM_MASK_ERROR; 1317 return (error); 1318 } 1319 1320 /* 1321 * determine ACE permissions. 1322 */ 1323 int 1324 ace_perm_mask(struct acl_perm_type *aclperm, uint32_t *mask) 1325 { 1326 int error; 1327 1328 if (aclperm->perm_style == PERM_TYPE_EMPTY) { 1329 *mask = 0; 1330 return (0); 1331 } 1332 1333 if (aclperm->perm_style == PERM_TYPE_ACE) { 1334 *mask = aclperm->perm_val; 1335 return (0); 1336 } 1337 1338 error = compute_ace_perms(aclperm->perm_str, mask); 1339 if (error) { 1340 acl_error(dgettext(TEXT_DOMAIN, 1341 "Invalid permission(s) '%s' specified\n"), 1342 aclperm->perm_str); 1343 return (EACL_PERM_MASK_ERROR); 1344 } 1345 1346 return (0); 1347 } 1348