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 2009 Sun Microsystems, Inc. All rights reserved. 23 * Use is subject to license terms. 24 */ 25 26 /* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */ 27 /* All Rights Reserved */ 28 29 /* Copyright (c) 1987, 1988 Microsoft Corporation */ 30 /* All Rights Reserved */ 31 32 /* 33 * passwd is a program whose sole purpose is to manage 34 * the password file, map, or table. It allows system administrator 35 * to add, change and display password attributes. 36 * Non privileged user can change password or display 37 * password attributes which corresponds to their login name. 38 */ 39 40 #include <stdio.h> 41 #include <pwd.h> 42 #include <sys/types.h> 43 #include <errno.h> 44 #include <unistd.h> 45 #include <stdlib.h> 46 #include <locale.h> 47 #include <stdarg.h> 48 #include <errno.h> 49 #include <string.h> 50 #include <security/pam_appl.h> 51 #include <security/pam_modules.h> 52 #include <security/pam_impl.h> 53 #include <rpcsvc/nis.h> 54 #undef GROUP 55 #include <syslog.h> 56 #include <userdefs.h> 57 #include <passwdutil.h> 58 59 #include <nss_dbdefs.h> 60 61 #include <deflt.h> 62 63 #undef GROUP 64 #include <bsm/adt.h> 65 #include <bsm/adt_event.h> 66 67 /* 68 * flags indicate password attributes to be modified 69 */ 70 71 #define LFLAG 0x001 /* lock user's password */ 72 #define DFLAG 0x002 /* delete user's password */ 73 #define MFLAG 0x004 /* set max field -- # of days passwd is valid */ 74 #define NFLAG 0x008 /* set min field -- # of days between */ 75 /* password changes */ 76 #define SFLAG 0x010 /* display password attributes */ 77 #define FFLAG 0x020 /* expire user's password */ 78 #define AFLAG 0x040 /* display password attributes for all users */ 79 #define SAFLAG (SFLAG|AFLAG) /* display password attributes for all users */ 80 #define WFLAG 0x100 /* warn user to change passwd */ 81 #define OFLAG 0x200 /* domain name */ 82 #define EFLAG 0x400 /* change shell */ 83 #define GFLAG 0x800 /* change gecos information */ 84 #define HFLAG 0x1000 /* change home directory */ 85 #define XFLAG 0x2000 /* no login */ 86 #define UFLAG 0x4000 /* unlock user's password */ 87 88 #define NONAGEFLAG (EFLAG | GFLAG | HFLAG) 89 #define AGEFLAG (LFLAG | FFLAG | MFLAG | NFLAG | WFLAG | XFLAG | UFLAG) 90 #define MUTEXFLAG (DFLAG | LFLAG | XFLAG | UFLAG | SAFLAG) 91 92 93 /* 94 * exit code 95 */ 96 97 #define SUCCESS 0 /* succeeded */ 98 #define NOPERM 1 /* No permission */ 99 #define BADOPT 2 /* Invalid combination of option */ 100 #define FMERR 3 /* File/table manipulation error */ 101 #define FATAL 4 /* Old file/table can not be recovered */ 102 #define FBUSY 5 /* Lock file/table busy */ 103 #define BADSYN 6 /* Incorrect syntax */ 104 #define BADAGE 7 /* Aging is disabled */ 105 #define NOMEM 8 /* No memory */ 106 #define SYSERR 9 /* System error */ 107 #define EXPIRED 10 /* Account expired */ 108 109 /* 110 * define error messages 111 */ 112 #define MSG_NP "Permission denied" 113 #define MSG_BS "Invalid combination of options" 114 #define MSG_FE "Unexpected failure. Password file/table unchanged." 115 #define MSG_FF "Unexpected failure. Password file/table missing." 116 #define MSG_FB "Password file/table busy. Try again later." 117 #define MSG_NV "Invalid argument to option" 118 #define MSG_AD "Password aging is disabled" 119 #define MSG_RS "Cannot change from restricted shell %s\n" 120 #define MSG_NM "Out of memory." 121 #define MSG_UNACCEPT "%s is unacceptable as a new shell\n" 122 #define MSG_UNAVAIL "warning: %s is unavailable on this machine\n" 123 #define MSG_COLON "':' is not allowed.\n" 124 #define MSG_MAXLEN "Maximum number of characters allowed is %d." 125 #define MSG_CONTROL "Control characters are not allowed.\n" 126 #define MSG_SHELL_UNCHANGED "Login shell unchanged.\n" 127 #define MSG_GECOS_UNCHANGED "Finger information unchanged.\n" 128 #define MSG_DIR_UNCHANGED "Homedir information unchanged.\n" 129 #define MSG_NAME "\nName [%s]: " 130 #define MSG_HOMEDIR "\nHome Directory [%s]: " 131 #define MSG_OLDSHELL "Old shell: %s\n" 132 #define MSG_NEWSHELL "New shell: " 133 #define MSG_AGAIN "\nPlease try again\n" 134 #define MSG_INPUTHDR "Default values are printed inside of '[]'.\n" \ 135 "To accept the default, type <return>.\n" \ 136 "To have a blank entry, type the word 'none'.\n" 137 #define MSG_UNKNOWN "%s: User unknown: %s\n" 138 #define MSG_ACCOUNT_EXP "User account has expired: %s\n" 139 #define MSG_AUTHTOK_EXP "Your password has been expired for too long.\n" \ 140 "Please contact the system administrator.\n" 141 #define MSG_NIS_HOMEDIR "-h does not apply to NIS" 142 #define MSG_CUR_PASS "Enter existing login password: " 143 #define MSG_CUR_PASS_UNAME "Enter %s's existing login password: " 144 #define MSG_SUCCESS "%s: password information changed for %s\n" 145 #define MSG_SORRY "%s: Sorry, wrong passwd\n" 146 #define MSG_INFO "%s: Changing password for %s\n" 147 148 149 /* 150 * return code from ckarg() routine 151 */ 152 #define FAIL -1 153 154 /* 155 * defind password file name 156 */ 157 #define PASSWD "/etc/passwd" 158 159 #define MAX_INPUT_LEN 512 160 161 #define DEF_ATTEMPTS 3 162 163 /* Number of characters in that make up an encrypted password (for now) */ 164 #define NUMCP 13 165 166 #ifdef DEBUG 167 #define dprintf1 printf 168 #else 169 #define dprintf1(w, x) 170 #endif 171 172 extern int optind; 173 174 static int retval = SUCCESS; 175 static int pam_retval = PAM_SUCCESS; 176 static uid_t uid; 177 static char *prognamep; 178 static long maxdate; /* password aging information */ 179 static int passwd_conv(int, struct pam_message **, 180 struct pam_response **, void *); 181 static struct pam_conv pam_conv = {passwd_conv, NULL}; 182 static pam_handle_t *pamh; /* Authentication handle */ 183 static char *usrname; /* user whose attribute we update */ 184 static adt_session_data_t *ah; /* audit session handle */ 185 static adt_event_data_t *event = NULL; /* event to be generated */ 186 187 static pam_repository_t auth_rep; 188 static pwu_repository_t repository; 189 static pwu_repository_t __REPFILES = { "files", NULL, 0 }; 190 191 /* 192 * Function Declarations 193 */ 194 195 extern void setusershell(void); 196 extern char *getusershell(void); 197 extern void endusershell(void); 198 199 static void passwd_exit(int retcode) __NORETURN; 200 static void rusage(void); 201 static int ckuid(void); 202 static int ckarg(int argc, char **argv, attrlist **attributes); 203 204 static int get_namelist(pwu_repository_t, char ***, int *); 205 static int get_namelist_files(char ***, int *); 206 static int get_namelist_local(char ***, int *); 207 static int get_attr(char *, pwu_repository_t *, attrlist **); 208 static void display_attr(char *, attrlist *); 209 static void free_attr(attrlist *); 210 static void attrlist_add(attrlist **, attrtype, char *); 211 static void attrlist_reorder(attrlist **); 212 static char *userinput(char *, pwu_repository_t *, attrtype); 213 static char *getresponse(char *); 214 215 /* 216 * main(): 217 * The main routine will call ckarg() to parse the command line 218 * arguments and call the appropriate functions to perform the 219 * tasks specified by the arguments. It allows system 220 * administrator to add, change and display password attributes. 221 * Non privileged user can change password or display 222 * password attributes which corresponds to their login name. 223 */ 224 225 int 226 main(int argc, char *argv[]) 227 { 228 229 int flag; 230 char **namelist; 231 int num_user; 232 int i; 233 attrlist *attributes = NULL; 234 char *input; 235 int tries = 1; 236 int updated_reps; 237 238 239 if (prognamep = strrchr(argv[0], '/')) 240 ++prognamep; 241 else 242 prognamep = argv[0]; 243 244 auth_rep.type = NULL; 245 auth_rep.scope = NULL; 246 repository.type = NULL; 247 repository.scope = NULL; 248 repository.scope_len = 0; 249 250 251 /* initialization for variables, set locale and textdomain */ 252 i = 0; 253 flag = 0; 254 255 uid = getuid(); /* get the user id */ 256 (void) setlocale(LC_ALL, ""); 257 258 #if !defined(TEXT_DOMAIN) /* Should be defined by cc -D */ 259 #define TEXT_DOMAIN "SYS_TEST" /* Use this only if it weren't */ 260 #endif 261 (void) textdomain(TEXT_DOMAIN); 262 263 /* 264 * ckarg() parses the arguments. In case of an error, 265 * it sets the retval and returns FAIL (-1). 266 */ 267 268 flag = ckarg(argc, argv, &attributes); 269 dprintf1("flag is %0x\n", flag); 270 if (flag == FAIL) 271 passwd_exit(retval); 272 273 argc -= optind; 274 275 if (argc < 1) { 276 if ((usrname = getlogin()) == NULL) { 277 struct passwd *pass = getpwuid(uid); 278 if (pass != NULL) 279 usrname = pass->pw_name; 280 else { 281 rusage(); 282 exit(NOPERM); 283 } 284 } else if (flag == 0) { 285 /* 286 * If flag is zero, change passwd. 287 * Otherwise, it will display or 288 * modify password aging attributes 289 */ 290 (void) fprintf(stderr, gettext(MSG_INFO), prognamep, 291 usrname); 292 } 293 } else 294 usrname = argv[optind]; 295 296 if (pam_start("passwd", usrname, &pam_conv, &pamh) != PAM_SUCCESS) 297 passwd_exit(NOPERM); 298 299 auth_rep.type = repository.type; 300 auth_rep.scope = repository.scope; 301 auth_rep.scope_len = repository.scope_len; 302 303 if (auth_rep.type != NULL) { 304 if (pam_set_item(pamh, PAM_REPOSITORY, (void *)&auth_rep) 305 != PAM_SUCCESS) { 306 passwd_exit(NOPERM); 307 } 308 } 309 310 if (flag == SAFLAG) { /* display password attributes for all users */ 311 retval = get_namelist(repository, &namelist, &num_user); 312 if (retval != SUCCESS) 313 (void) passwd_exit(retval); 314 315 if (num_user == 0) { 316 (void) fprintf(stderr, "%s: %s\n", prognamep, 317 gettext(MSG_FF)); 318 passwd_exit(FATAL); 319 } 320 i = 0; 321 while (namelist[i] != NULL) { 322 (void) get_attr(namelist[i], &repository, 323 &attributes); 324 (void) display_attr(namelist[i], attributes); 325 (void) free(namelist[i]); 326 (void) free_attr(attributes); 327 i++; 328 } 329 (void) free(namelist); 330 passwd_exit(SUCCESS); 331 } else if (flag == SFLAG) { /* display password attributes by user */ 332 if (get_attr(usrname, &repository, &attributes) == 333 PWU_SUCCESS) { 334 (void) display_attr(usrname, attributes); 335 (void) free_attr(attributes); 336 } 337 passwd_exit(SUCCESS); 338 /* NOT REACHED */ 339 } 340 341 342 switch (pam_authenticate(pamh, 0)) { 343 case PAM_SUCCESS: 344 break; 345 case PAM_USER_UNKNOWN: 346 (void) fprintf(stderr, gettext(MSG_UNKNOWN), prognamep, 347 usrname); 348 passwd_exit(NOPERM); 349 break; 350 case PAM_PERM_DENIED: 351 passwd_exit(NOPERM); 352 break; 353 case PAM_AUTH_ERR: 354 (void) fprintf(stderr, gettext(MSG_SORRY), prognamep); 355 passwd_exit(NOPERM); 356 break; 357 default: 358 /* system error */ 359 passwd_exit(FMERR); 360 break; 361 } 362 363 if (flag == 0) { /* changing user password */ 364 int chk_authtok = 0; /* check password strength */ 365 366 dprintf1("call pam_chauthtok() repository name =%s\n", 367 repository.type); 368 369 /* Set up for Audit */ 370 if (adt_start_session(&ah, NULL, ADT_USE_PROC_DATA) != 0) { 371 perror("adt_start_session"); 372 passwd_exit(SYSERR); 373 } 374 if ((event = adt_alloc_event(ah, ADT_passwd)) == NULL) { 375 perror("adt_alloc_event"); 376 passwd_exit(NOMEM); 377 } 378 if (argc >= 1) { 379 /* save target user */ 380 event->adt_passwd.username = usrname; 381 } 382 383 /* Don't check account expiration when invoked by root */ 384 if (ckuid() != SUCCESS) { 385 pam_retval = pam_acct_mgmt(pamh, PAM_SILENT); 386 switch (pam_retval) { 387 case PAM_ACCT_EXPIRED: 388 (void) fprintf(stderr, 389 gettext(MSG_ACCOUNT_EXP), usrname); 390 passwd_exit(EXPIRED); 391 break; 392 case PAM_AUTHTOK_EXPIRED: 393 (void) fprintf(stderr, 394 gettext(MSG_AUTHTOK_EXP)); 395 passwd_exit(NOPERM); 396 break; 397 case PAM_NEW_AUTHTOK_REQD: 398 /* valid error when changing passwords */ 399 break; 400 case PAM_SUCCESS: 401 /* Ok to change password */ 402 break; 403 default: 404 passwd_exit(NOPERM); 405 } 406 } 407 408 409 pam_retval = PAM_AUTHTOK_ERR; 410 tries = 1; 411 if (ckuid() == SUCCESS) { 412 /* bypass password strength checks */ 413 chk_authtok = PAM_NO_AUTHTOK_CHECK; 414 } 415 416 while (pam_retval == PAM_AUTHTOK_ERR && tries <= DEF_ATTEMPTS) { 417 if (tries > 1) 418 (void) printf(gettext(MSG_AGAIN)); 419 pam_retval = pam_chauthtok(pamh, chk_authtok); 420 if (pam_retval == PAM_TRY_AGAIN) { 421 (void) sleep(1); 422 pam_retval = pam_chauthtok(pamh, chk_authtok); 423 } 424 tries++; 425 } 426 427 switch (pam_retval) { 428 case PAM_SUCCESS: 429 retval = SUCCESS; 430 break; 431 case PAM_AUTHTOK_DISABLE_AGING: 432 retval = BADAGE; 433 break; 434 case PAM_AUTHTOK_LOCK_BUSY: 435 retval = FBUSY; 436 break; 437 case PAM_TRY_AGAIN: 438 retval = FBUSY; 439 break; 440 case PAM_AUTHTOK_ERR: 441 case PAM_AUTHTOK_RECOVERY_ERR: 442 default: 443 retval = NOPERM; 444 break; 445 } 446 447 (void) passwd_exit(retval); 448 /* NOT REACHED */ 449 } else { /* changing attributes */ 450 switch (flag) { 451 case EFLAG: /* changing user password attributes */ 452 input = userinput(usrname, &repository, ATTR_SHELL); 453 if (input) 454 attrlist_add(&attributes, ATTR_SHELL, input); 455 else 456 (void) printf(gettext(MSG_SHELL_UNCHANGED)); 457 break; 458 case GFLAG: 459 input = userinput(usrname, &repository, ATTR_GECOS); 460 if (input) 461 attrlist_add(&attributes, ATTR_GECOS, input); 462 else 463 (void) printf(gettext(MSG_GECOS_UNCHANGED)); 464 break; 465 case HFLAG: 466 input = userinput(usrname, &repository, ATTR_HOMEDIR); 467 if (input) 468 attrlist_add(&attributes, ATTR_HOMEDIR, input); 469 else 470 (void) printf(gettext(MSG_DIR_UNCHANGED)); 471 break; 472 } 473 474 if (attributes != NULL) { 475 retval = __set_authtoken_attr(usrname, 476 pamh->ps_item[PAM_AUTHTOK].pi_addr, 477 &repository, attributes, &updated_reps); 478 switch (retval) { 479 case PWU_SUCCESS: 480 for (i = 1; i <= REP_LAST; i <<= 1) { 481 if ((updated_reps & i) == 0) 482 continue; 483 (void) printf(gettext(MSG_SUCCESS), 484 prognamep, usrname); 485 } 486 retval = SUCCESS; 487 break; 488 case PWU_AGING_DISABLED: 489 retval = BADAGE; 490 break; 491 default: 492 retval = NOPERM; 493 break; 494 } 495 } else { 496 retval = SUCCESS; /* nothing to change won't fail */ 497 } 498 (void) passwd_exit(retval); 499 } 500 /* NOTREACHED */ 501 return (0); 502 } 503 504 /* 505 * Get a line of input from the user. 506 * 507 * If the line is empty, or the input equals 'oldval', NULL is returned. 508 * therwise, a malloced string containing the input (minus the trailing 509 * newline) is returned. 510 */ 511 char * 512 getresponse(char *oldval) 513 { 514 char resp[MAX_INPUT_LEN]; 515 char *retval = NULL; 516 int resplen; 517 518 (void) fgets(resp, sizeof (resp) - 1, stdin); 519 resplen = strlen(resp) - 1; 520 if (resp[resplen] == '\n') 521 resp[resplen] = '\0'; 522 if (*resp != '\0' && strcmp(resp, oldval) != 0) 523 retval = strdup(resp); 524 return (retval); 525 } 526 527 /* 528 * char *userinput(item) 529 * 530 * user conversation function. The old value of attribute "item" is 531 * displayed while the user is asked to provide a new value. 532 * 533 * returns a malloc()-ed string if the user actualy provided input 534 * or NULL if the user simply hit return or the input equals the old 535 * value (not changed). 536 */ 537 char * 538 userinput(char *name, pwu_repository_t *rep, attrtype type) 539 { 540 attrlist oldattr; 541 char *oldval; /* shorthand for oldattr.data.val_s */ 542 char *valid; /* points to valid shells */ 543 char *response; 544 char *cp; 545 546 oldattr.type = type; 547 oldattr.next = NULL; 548 549 if (__get_authtoken_attr(name, rep, &oldattr) != PWU_SUCCESS) 550 passwd_exit(FMERR); 551 552 oldval = oldattr.data.val_s; 553 554 if (type == ATTR_SHELL) { 555 /* No current shell: set DEFSHL as default choice */ 556 if (*oldval == '\0') { 557 free(oldval); 558 oldval = strdup(DEFSHL); 559 } 560 561 if (ckuid() != SUCCESS) { 562 /* User must currently have a valid shell */ 563 setusershell(); 564 valid = getusershell(); 565 while (valid && strcmp(valid, oldval) != 0) 566 valid = getusershell(); 567 endusershell(); 568 569 if (valid == NULL) { 570 (void) fprintf(stderr, gettext(MSG_RS), oldval); 571 free(oldval); 572 return (NULL); 573 } 574 } 575 (void) printf(gettext(MSG_OLDSHELL), oldval); 576 (void) printf(gettext(MSG_NEWSHELL)); 577 (void) fflush(stdout); 578 579 response = getresponse(oldval); 580 free(oldval); /* We don't need the old value anymore */ 581 582 if (response == NULL || *response == '\0') 583 return (NULL); 584 585 /* Make sure new shell is listed */ 586 setusershell(); 587 valid = getusershell(); 588 while (valid) { 589 char *cp; 590 591 /* Allow user to give shell without path */ 592 if (*response == '/') { 593 cp = valid; 594 } else { 595 if ((cp = strrchr(valid, '/')) == NULL) 596 cp = valid; 597 else 598 cp++; 599 } 600 if (strcmp(cp, response) == 0) { 601 if (*response != '/') { 602 /* take shell name including path */ 603 free(response); 604 response = strdup(valid); 605 } 606 break; 607 } 608 valid = getusershell(); 609 } 610 endusershell(); 611 612 if (valid == NULL) { /* No valid shell matches */ 613 (void) fprintf(stderr, gettext(MSG_UNACCEPT), response); 614 return (NULL); 615 } 616 617 if (access(response, X_OK) < 0) 618 (void) fprintf(stderr, gettext(MSG_UNAVAIL), response); 619 return (response); 620 /* NOT REACHED */ 621 } 622 /* 623 * if type == SHELL, we have returned by now. Only GECOS and 624 * HOMEDIR get to this point. 625 */ 626 (void) printf(gettext(MSG_INPUTHDR)); 627 628 /* 629 * PRE: oldval points to malloced string with Old Value 630 * INV: oldval remains unchanged 631 * POST:response points to valid string or NULL. 632 */ 633 for (;;) { 634 if (type == ATTR_GECOS) 635 (void) printf(gettext(MSG_NAME), oldval); 636 else if (type == ATTR_HOMEDIR) 637 (void) printf(gettext(MSG_HOMEDIR), oldval); 638 639 response = getresponse(oldval); 640 641 if (response && strcmp(response, "none") == 0) 642 *response = '\0'; 643 644 /* No-change or empty string are OK */ 645 if (response == NULL || *response == '\0') 646 break; 647 648 /* Check for illegal characters */ 649 if (strchr(response, ':')) { 650 (void) fprintf(stderr, "%s", gettext(MSG_COLON)); 651 free(response); 652 } else if (strlen(response) > MAX_INPUT_LEN - 1) { 653 (void) fprintf(stderr, gettext(MSG_MAXLEN), 654 MAX_INPUT_LEN); 655 free(response); 656 } else { 657 /* don't allow control characters */ 658 for (cp = response; *cp >= 040; cp++) 659 ; 660 if (*cp != '\0') { 661 (void) fprintf(stderr, gettext(MSG_CONTROL)); 662 free(response); 663 } else 664 break; /* response is a valid string */ 665 } 666 /* 667 * We only get here if the input was invalid. 668 * In that case, we again ask the user for input. 669 */ 670 } 671 free(oldval); 672 return (response); 673 } 674 /* 675 * ckarg(): 676 * This function parses and verifies the 677 * arguments. It takes three parameters: 678 * argc => # of arguments 679 * argv => pointer to an argument 680 * attrlist => pointer to list of password attributes 681 */ 682 683 static int 684 ckarg(int argc, char **argv, attrlist **attributes) 685 { 686 extern char *optarg; 687 char *char_p; 688 int opt; 689 int flag; 690 691 flag = 0; 692 693 while ((opt = getopt(argc, argv, "r:aldefghsux:n:w:N")) != EOF) { 694 switch (opt) { 695 696 case 'r': /* Repository Specified */ 697 /* repository: this option should be specified first */ 698 699 if (repository.type != NULL) { 700 (void) fprintf(stderr, gettext( 701 "Repository is already defined or specified.\n")); 702 rusage(); 703 retval = BADSYN; 704 return (FAIL); 705 } 706 if (strcmp(optarg, "nis") == 0) { 707 repository.type = optarg; 708 } else if (strcmp(optarg, "ldap") == 0) { 709 repository.type = optarg; 710 } else if (strcmp(optarg, "files") == 0) { 711 repository.type = optarg; 712 } else { 713 (void) fprintf(stderr, 714 gettext("invalid repository: %s\n"), 715 optarg); 716 rusage(); 717 retval = BADSYN; 718 return (FAIL); 719 } 720 break; 721 722 case 'd': /* Delete Auth Token */ 723 /* if no repository the default for -d is files */ 724 if (repository.type == NULL) 725 repository = __REPFILES; 726 727 /* 728 * Delete the password - only privileged processes 729 * can execute this for FILES or LDAP 730 */ 731 if (IS_FILES(repository) == FALSE && 732 IS_LDAP(repository) == FALSE) { 733 (void) fprintf(stderr, gettext( 734 "-d only applies to files " 735 "or ldap repository\n")); 736 rusage(); /* exit */ 737 retval = BADSYN; 738 return (FAIL); 739 } 740 741 if (ckuid() != SUCCESS) { 742 retval = NOPERM; 743 return (FAIL); 744 } 745 if (flag & (LFLAG|SAFLAG|DFLAG|XFLAG|UFLAG)) { 746 rusage(); 747 retval = BADOPT; 748 return (FAIL); 749 } 750 flag |= DFLAG; 751 attrlist_add(attributes, ATTR_PASSWD, NULL); 752 break; 753 754 case 'N': /* set account to be "no login" */ 755 756 /* if no repository the default for -N is files */ 757 if (repository.type == NULL) 758 repository = __REPFILES; 759 760 if (IS_FILES(repository) == FALSE && 761 IS_LDAP(repository) == FALSE) { 762 (void) fprintf(stderr, gettext( 763 "-N only applies to files or ldap " 764 "repository\n")); 765 rusage(); /* exit */ 766 retval = BADOPT; 767 return (FAIL); 768 } 769 770 /* 771 * Only privileged processes can execute this 772 * for FILES or LDAP 773 */ 774 if ((IS_FILES(repository) || IS_LDAP(repository)) && 775 ((retval = ckuid()) != SUCCESS)) 776 return (FAIL); 777 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 778 rusage(); /* exit */ 779 retval = BADOPT; 780 return (FAIL); 781 } 782 flag |= XFLAG; 783 attrlist_add(attributes, ATTR_NOLOGIN_ACCOUNT, NULL); 784 break; 785 786 case 'l': /* lock the password */ 787 788 /* if no repository the default for -l is files */ 789 if (repository.type == NULL) 790 repository = __REPFILES; 791 792 if (IS_FILES(repository) == FALSE && 793 IS_LDAP(repository) == FALSE) { 794 (void) fprintf(stderr, gettext( 795 "-l only applies to files or ldap " 796 "repository\n")); 797 rusage(); /* exit */ 798 retval = BADOPT; 799 return (FAIL); 800 } 801 802 /* 803 * Only privileged processes can execute this 804 * for FILES or LDAP 805 */ 806 if ((IS_FILES(repository) || IS_LDAP(repository)) && 807 ((retval = ckuid()) != SUCCESS)) 808 return (FAIL); 809 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 810 rusage(); /* exit */ 811 retval = BADOPT; 812 return (FAIL); 813 } 814 flag |= LFLAG; 815 attrlist_add(attributes, ATTR_LOCK_ACCOUNT, NULL); 816 break; 817 818 case 'u': /* unlock the password */ 819 820 /* if no repository the default for -u is files */ 821 if (repository.type == NULL) 822 repository = __REPFILES; 823 824 if (IS_FILES(repository) == FALSE && 825 IS_LDAP(repository) == FALSE) { 826 (void) fprintf(stderr, gettext( 827 "-u only applies to files or ldap " 828 "repository\n")); 829 rusage(); /* exit */ 830 retval = BADOPT; 831 return (FAIL); 832 } 833 834 /* 835 * Only privileged processes can execute this 836 * for FILES or LDAP 837 */ 838 if ((IS_FILES(repository) || IS_LDAP(repository)) && 839 ((retval = ckuid()) != SUCCESS)) 840 return (FAIL); 841 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 842 rusage(); /* exit */ 843 retval = BADOPT; 844 return (FAIL); 845 } 846 flag |= UFLAG; 847 attrlist_add(attributes, ATTR_UNLOCK_ACCOUNT, NULL); 848 attrlist_add(attributes, ATTR_RST_FAILED_LOGINS, NULL); 849 break; 850 851 case 'x': /* set the max date */ 852 853 /* if no repository the default for -x is files */ 854 if (repository.type == NULL) 855 repository = __REPFILES; 856 857 if (IS_FILES(repository) == FALSE && 858 IS_LDAP(repository) == FALSE) { 859 (void) fprintf(stderr, gettext( 860 "-x only applies to files or ldap " 861 "repository\n")); 862 rusage(); /* exit */ 863 retval = BADSYN; 864 return (FAIL); 865 } 866 867 /* 868 * Only privileged process can execute this 869 * for FILES or LDAP 870 */ 871 if ((IS_FILES(repository) || IS_LDAP(repository)) && 872 (ckuid() != SUCCESS)) { 873 retval = NOPERM; 874 return (FAIL); 875 } 876 if (flag & (SAFLAG|MFLAG|NONAGEFLAG)) { 877 retval = BADOPT; 878 return (FAIL); 879 } 880 flag |= MFLAG; 881 if ((int)strlen(optarg) <= 0 || 882 (maxdate = strtol(optarg, &char_p, 10)) < -1 || 883 *char_p != '\0') { 884 (void) fprintf(stderr, "%s: %s -x\n", 885 prognamep, gettext(MSG_NV)); 886 retval = BADSYN; 887 return (FAIL); 888 } 889 attrlist_add(attributes, ATTR_MAX, optarg); 890 break; 891 892 case 'n': /* set the min date */ 893 894 /* if no repository the default for -n is files */ 895 if (repository.type == NULL) 896 repository = __REPFILES; 897 898 if (IS_FILES(repository) == FALSE && 899 IS_LDAP(repository) == FALSE) { 900 (void) fprintf(stderr, gettext( 901 "-n only applies to files or ldap " 902 "repository\n")); 903 rusage(); /* exit */ 904 retval = BADSYN; 905 return (FAIL); 906 } 907 908 /* 909 * Only privileged process can execute this 910 * for FILES or LDAP 911 */ 912 if ((IS_FILES(repository) || IS_LDAP(repository)) && 913 ((retval = ckuid()) != SUCCESS)) 914 return (FAIL); 915 if (flag & (SAFLAG|NFLAG|NONAGEFLAG)) { 916 retval = BADOPT; 917 return (FAIL); 918 } 919 flag |= NFLAG; 920 if ((int)strlen(optarg) <= 0 || 921 (strtol(optarg, &char_p, 10)) < 0 || 922 *char_p != '\0') { 923 (void) fprintf(stderr, "%s: %s -n\n", 924 prognamep, gettext(MSG_NV)); 925 retval = BADSYN; 926 return (FAIL); 927 } 928 attrlist_add(attributes, ATTR_MIN, optarg); 929 break; 930 931 case 'w': /* set the warning field */ 932 933 /* if no repository the default for -w is files */ 934 if (repository.type == NULL) 935 repository = __REPFILES; 936 937 if (IS_FILES(repository) == FALSE && 938 IS_LDAP(repository) == FALSE) { 939 (void) fprintf(stderr, gettext( 940 "-w only applies to files or ldap " 941 "repository\n")); 942 rusage(); /* exit */ 943 retval = BADSYN; 944 return (FAIL); 945 } 946 947 /* 948 * Only privileged process can execute this 949 * for FILES or LDAP 950 */ 951 if ((IS_FILES(repository) || IS_LDAP(repository)) && 952 (ckuid() != SUCCESS)) { 953 retval = NOPERM; 954 return (FAIL); 955 } 956 if (flag & (SAFLAG|WFLAG|NONAGEFLAG)) { 957 retval = BADOPT; 958 return (FAIL); 959 } 960 flag |= WFLAG; 961 if ((int)strlen(optarg) <= 0 || 962 (strtol(optarg, &char_p, 10)) < 0 || 963 *char_p != '\0') { 964 (void) fprintf(stderr, "%s: %s -w\n", 965 prognamep, gettext(MSG_NV)); 966 retval = BADSYN; 967 return (FAIL); 968 } 969 attrlist_add(attributes, ATTR_WARN, optarg); 970 break; 971 972 case 's': /* display password attributes */ 973 974 /* if no repository the default for -s is files */ 975 if (repository.type == NULL) 976 repository = __REPFILES; 977 978 979 /* display password attributes */ 980 if (IS_FILES(repository) == FALSE && 981 IS_LDAP(repository) == FALSE) { 982 (void) fprintf(stderr, gettext( 983 "-s only applies to files or ldap " 984 "repository\n")); 985 rusage(); /* exit */ 986 retval = BADSYN; 987 return (FAIL); 988 } 989 990 /* 991 * Only privileged process can execute this 992 * for FILES or LDAP 993 */ 994 if ((IS_FILES(repository) || IS_LDAP(repository)) && 995 ((retval = ckuid()) != SUCCESS)) 996 return (FAIL); 997 if (flag && (flag != AFLAG)) { 998 retval = BADOPT; 999 return (FAIL); 1000 } 1001 flag |= SFLAG; 1002 break; 1003 1004 case 'a': /* display password attributes */ 1005 1006 /* if no repository the default for -a is files */ 1007 if (repository.type == NULL) 1008 repository = __REPFILES; 1009 1010 if (IS_FILES(repository) == FALSE && 1011 IS_LDAP(repository) == FALSE) { 1012 (void) fprintf(stderr, gettext( 1013 "-a only applies to files or ldap " 1014 "repository\n")); 1015 rusage(); /* exit */ 1016 retval = BADSYN; 1017 return (FAIL); 1018 } 1019 1020 /* 1021 * Only privileged process can execute this 1022 * for FILES or LDAP 1023 */ 1024 if ((IS_FILES(repository) || IS_LDAP(repository)) && 1025 ((retval = ckuid()) != SUCCESS)) 1026 return (FAIL); 1027 if (flag && (flag != SFLAG)) { 1028 retval = BADOPT; 1029 return (FAIL); 1030 } 1031 flag |= AFLAG; 1032 break; 1033 1034 case 'f': /* expire password attributes */ 1035 1036 /* if no repository the default for -f is files */ 1037 if (repository.type == NULL) 1038 repository = __REPFILES; 1039 1040 if (IS_FILES(repository) == FALSE && 1041 IS_LDAP(repository) == FALSE) { 1042 (void) fprintf(stderr, gettext( 1043 "-f only applies to files or ldap " 1044 "repository\n")); 1045 rusage(); /* exit */ 1046 retval = BADSYN; 1047 return (FAIL); 1048 } 1049 1050 /* 1051 * Only privileged process can execute this 1052 * for FILES or LDAP 1053 */ 1054 if ((IS_FILES(repository) || IS_LDAP(repository)) && 1055 ((retval = ckuid()) != SUCCESS)) 1056 return (FAIL); 1057 if (flag & (SAFLAG|FFLAG|NONAGEFLAG)) { 1058 retval = BADOPT; 1059 return (FAIL); 1060 } 1061 flag |= FFLAG; 1062 attrlist_add(attributes, ATTR_EXPIRE_PASSWORD, NULL); 1063 break; 1064 1065 case 'e': /* change login shell */ 1066 1067 /* if no repository the default for -e is files */ 1068 if (repository.type == NULL) 1069 repository = __REPFILES; 1070 1071 /* 1072 * Only privileged process can execute this 1073 * for FILES 1074 */ 1075 if (IS_FILES(repository) && (ckuid() != SUCCESS)) { 1076 retval = NOPERM; 1077 return (FAIL); 1078 } 1079 if (flag & (EFLAG|SAFLAG|AGEFLAG)) { 1080 retval = BADOPT; 1081 return (FAIL); 1082 } 1083 flag |= EFLAG; 1084 break; 1085 1086 case 'g': /* change gecos information */ 1087 1088 /* if no repository the default for -g is files */ 1089 if (repository.type == NULL) 1090 repository = __REPFILES; 1091 1092 /* 1093 * Only privileged process can execute this 1094 * for FILES 1095 */ 1096 if (IS_FILES(repository) && (ckuid() != SUCCESS)) { 1097 retval = NOPERM; 1098 return (FAIL); 1099 } 1100 if (flag & (GFLAG|SAFLAG|AGEFLAG)) { 1101 retval = BADOPT; 1102 return (FAIL); 1103 } 1104 flag |= GFLAG; 1105 break; 1106 1107 case 'h': /* change home dir */ 1108 1109 /* if no repository the default for -h is files */ 1110 if (repository.type == NULL) 1111 repository = __REPFILES; 1112 /* 1113 * Only privileged process can execute this 1114 * for FILES 1115 */ 1116 if (IS_FILES(repository) && (ckuid() != SUCCESS)) { 1117 retval = NOPERM; 1118 return (FAIL); 1119 } 1120 if (IS_NIS(repository)) { 1121 (void) fprintf(stderr, "%s\n", 1122 gettext(MSG_NIS_HOMEDIR)); 1123 retval = BADSYN; 1124 return (FAIL); 1125 } 1126 1127 if (flag & (HFLAG|SAFLAG|AGEFLAG)) { 1128 retval = BADOPT; 1129 return (FAIL); 1130 } 1131 flag |= HFLAG; 1132 break; 1133 1134 case '?': 1135 rusage(); 1136 retval = BADOPT; 1137 return (FAIL); 1138 } 1139 } 1140 1141 argc -= optind; 1142 if (argc > 1) { 1143 rusage(); 1144 retval = BADSYN; 1145 return (FAIL); 1146 } 1147 1148 /* Make sure (EXPIRE comes after (MAX comes after MIN)) */ 1149 attrlist_reorder(attributes); 1150 1151 /* If no options are specified or only the show option */ 1152 /* is specified, return because no option error checking */ 1153 /* is needed */ 1154 if (!flag || (flag == SFLAG)) 1155 return (flag); 1156 1157 /* AFLAG must be used with SFLAG */ 1158 if (flag == AFLAG) { 1159 rusage(); 1160 retval = BADSYN; 1161 return (FAIL); 1162 } 1163 1164 if (flag != SAFLAG && argc < 1) { 1165 /* 1166 * user name is not specified (argc<1), it can't be 1167 * aging info update. 1168 */ 1169 if (!(flag & NONAGEFLAG)) { 1170 rusage(); 1171 retval = BADSYN; 1172 return (FAIL); 1173 } 1174 } 1175 1176 /* user name(s) may not be specified when SAFLAG is used. */ 1177 if (flag == SAFLAG && argc >= 1) { 1178 rusage(); 1179 retval = BADSYN; 1180 return (FAIL); 1181 } 1182 1183 /* 1184 * If aging is being turned off (maxdate == -1), mindate may not 1185 * be specified. 1186 */ 1187 if ((maxdate == -1) && (flag & NFLAG)) { 1188 (void) fprintf(stderr, "%s: %s -n\n", 1189 prognamep, gettext(MSG_NV)); 1190 retval = BADOPT; 1191 return (FAIL); 1192 } 1193 1194 return (flag); 1195 } 1196 1197 /* 1198 * 1199 * ckuid(): 1200 * This function returns SUCCESS if the caller is root, else 1201 * it returns NOPERM. 1202 * 1203 */ 1204 1205 static int 1206 ckuid(void) 1207 { 1208 if (uid != 0) { 1209 return (retval = NOPERM); 1210 } 1211 return (SUCCESS); 1212 } 1213 1214 1215 /* 1216 * get_attr() 1217 */ 1218 int 1219 get_attr(char *username, pwu_repository_t *repository, attrlist **attributes) 1220 { 1221 int res; 1222 1223 attrlist_add(attributes, ATTR_PASSWD, NULL); 1224 attrlist_add(attributes, ATTR_LSTCHG, "0"); 1225 attrlist_add(attributes, ATTR_MIN, "0"); 1226 attrlist_add(attributes, ATTR_MAX, "0"); 1227 attrlist_add(attributes, ATTR_WARN, "0"); 1228 1229 res = __get_authtoken_attr(username, repository, *attributes); 1230 1231 if (res == PWU_SUCCESS) { 1232 retval = SUCCESS; 1233 return (PWU_SUCCESS); 1234 } 1235 1236 if (res == PWU_NOT_FOUND) 1237 (void) fprintf(stderr, gettext(MSG_UNKNOWN), prognamep, 1238 username); 1239 1240 retval = NOPERM; 1241 passwd_exit(retval); 1242 /*NOTREACHED*/ 1243 } 1244 1245 /* 1246 * display_attr(): 1247 * This function prints out the password attributes of a usr 1248 * onto standand output. 1249 */ 1250 void 1251 display_attr(char *usrname, attrlist *attributes) 1252 { 1253 char *status; 1254 char *passwd; 1255 long lstchg; 1256 int min, max, warn; 1257 1258 while (attributes) { 1259 switch (attributes->type) { 1260 case ATTR_PASSWD: 1261 passwd = attributes->data.val_s; 1262 if (passwd == NULL || *passwd == '\0') 1263 status = "NP "; 1264 else if (strncmp(passwd, LOCKSTRING, 1265 sizeof (LOCKSTRING)-1) == 0) 1266 status = "LK "; 1267 else if (strncmp(passwd, NOLOGINSTRING, 1268 sizeof (NOLOGINSTRING)-1) == 0) 1269 status = "NL "; 1270 else if ((strlen(passwd) == 13 && passwd[0] != '$') || 1271 passwd[0] == '$') 1272 status = "PS "; 1273 else 1274 status = "UN "; 1275 break; 1276 case ATTR_LSTCHG: 1277 lstchg = attributes->data.val_i * DAY; 1278 break; 1279 case ATTR_MIN: 1280 min = attributes->data.val_i; 1281 break; 1282 case ATTR_MAX: 1283 max = attributes->data.val_i; 1284 break; 1285 case ATTR_WARN: 1286 warn = attributes->data.val_i; 1287 break; 1288 } 1289 attributes = attributes->next; 1290 } 1291 (void) fprintf(stdout, "%-8s ", usrname); 1292 1293 if (status) 1294 (void) fprintf(stdout, "%s ", status); 1295 1296 if (max != -1) { 1297 if (lstchg == 0) { 1298 (void) fprintf(stdout, "00/00/00 "); 1299 } else { 1300 struct tm *tmp; 1301 tmp = gmtime(&lstchg); 1302 (void) fprintf(stdout, "%.2d/%.2d/%.2d ", 1303 tmp->tm_mon + 1, 1304 tmp->tm_mday, 1305 tmp->tm_year % 100); 1306 } 1307 (void) fprintf(stdout, (min >= 0) ? "%4d " : " ", min); 1308 (void) fprintf(stdout, "%4d ", max); 1309 (void) fprintf(stdout, (warn > 0) ? "%4d " : " ", warn); 1310 } 1311 (void) fprintf(stdout, "\n"); 1312 } 1313 1314 void 1315 free_attr(attrlist *attributes) 1316 { 1317 while (attributes) { 1318 if (attributes->type == ATTR_PASSWD) 1319 free(attributes->data.val_s); 1320 attributes = attributes->next; 1321 } 1322 } 1323 1324 /* 1325 * 1326 * get_namelist_files(): 1327 * This function gets a list of user names on the system from 1328 * the /etc/passwd file. 1329 * 1330 */ 1331 int 1332 get_namelist_files(char ***namelist_p, int *num_user) 1333 { 1334 FILE *pwfp; 1335 struct passwd *pwd; 1336 int max_user; 1337 int nuser; 1338 char **nl; 1339 1340 nuser = 0; 1341 errno = 0; 1342 pwd = NULL; 1343 1344 if ((pwfp = fopen(PASSWD, "r")) == NULL) 1345 return (NOPERM); 1346 1347 /* 1348 * find out the actual number of entries in the PASSWD file 1349 */ 1350 max_user = 1; /* need one slot for terminator NULL */ 1351 while ((pwd = fgetpwent(pwfp)) != NULL) 1352 max_user++; 1353 1354 /* 1355 * reset the file stream pointer 1356 */ 1357 rewind(pwfp); 1358 1359 nl = (char **)calloc(max_user, (sizeof (char *))); 1360 if (nl == NULL) { 1361 (void) fclose(pwfp); 1362 return (FMERR); 1363 } 1364 1365 while ((pwd = fgetpwent(pwfp)) != NULL) { 1366 if ((nl[nuser] = strdup(pwd->pw_name)) == NULL) { 1367 (void) fclose(pwfp); 1368 return (FMERR); 1369 } 1370 nuser++; 1371 } 1372 1373 nl[nuser] = NULL; 1374 *num_user = nuser; 1375 *namelist_p = nl; 1376 (void) fclose(pwfp); 1377 return (SUCCESS); 1378 } 1379 1380 /* 1381 * get_namelist_local 1382 * 1383 */ 1384 1385 /* 1386 * Our private version of the switch frontend for getspent. We want 1387 * to search just the ldap sp file, so we want to bypass 1388 * normal nsswitch.conf based processing. This implementation 1389 * compatible with version 2 of the name service switch. 1390 */ 1391 #define NSS_LDAP_ONLY "ldap" 1392 1393 extern int str2spwd(const char *, int, void *, char *, int); 1394 1395 static DEFINE_NSS_DB_ROOT(db_root); 1396 static DEFINE_NSS_GETENT(context); 1397 1398 static char *local_config; 1399 static void 1400 _lc_nss_initf_shadow(nss_db_params_t *p) 1401 { 1402 p->name = NSS_DBNAM_SHADOW; 1403 p->config_name = NSS_DBNAM_PASSWD; /* Use config for "passwd" */ 1404 p->default_config = local_config; /* Use ldap only */ 1405 p->flags = NSS_USE_DEFAULT_CONFIG; 1406 } 1407 1408 static void 1409 _lc_setspent(void) 1410 { 1411 nss_setent(&db_root, _lc_nss_initf_shadow, &context); 1412 } 1413 1414 static void 1415 _lc_endspent(void) 1416 { 1417 nss_endent(&db_root, _lc_nss_initf_shadow, &context); 1418 nss_delete(&db_root); 1419 } 1420 1421 static struct spwd * 1422 _lc_getspent_r(struct spwd *result, char *buffer, int buflen) 1423 { 1424 nss_XbyY_args_t arg; 1425 char *nam; 1426 1427 /* In getXXent_r(), protect the unsuspecting caller from +/- entries */ 1428 1429 do { 1430 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2spwd); 1431 /* No key to fill in */ 1432 (void) nss_getent(&db_root, _lc_nss_initf_shadow, &context, 1433 &arg); 1434 } while (arg.returnval != 0 && 1435 (nam = ((struct spwd *)arg.returnval)->sp_namp) != 0 && 1436 (*nam == '+' || *nam == '-')); 1437 1438 return (struct spwd *)NSS_XbyY_FINI(&arg); 1439 } 1440 1441 static nss_XbyY_buf_t *buffer; 1442 1443 static struct spwd * 1444 _lc_getspent(void) 1445 { 1446 nss_XbyY_buf_t *b; 1447 1448 b = NSS_XbyY_ALLOC(&buffer, sizeof (struct spwd), NSS_BUFLEN_SHADOW); 1449 1450 return (b == 0 ? 0 : _lc_getspent_r(b->result, b->buffer, b->buflen)); 1451 } 1452 1453 int 1454 get_namelist_local(char ***namelist_p, int *num_user) 1455 { 1456 int nuser = 0; 1457 int alloced = 100; 1458 char **nl; 1459 struct spwd *p; 1460 1461 1462 if ((nl = calloc(alloced, sizeof (*nl))) == NULL) 1463 return (FMERR); 1464 1465 (void) _lc_setspent(); 1466 while ((p = _lc_getspent()) != NULL) { 1467 if ((nl[nuser] = strdup(p->sp_namp)) == NULL) { 1468 _lc_endspent(); 1469 return (FMERR); 1470 } 1471 if (++nuser == alloced) { 1472 alloced += 100; 1473 nl = realloc(nl, alloced * (sizeof (*nl))); 1474 if (nl == NULL) { 1475 _lc_endspent(); 1476 return (FMERR); 1477 } 1478 } 1479 } 1480 (void) _lc_endspent(); 1481 nl[nuser] = NULL; 1482 1483 *namelist_p = nl; 1484 *num_user = nuser; /* including NULL */ 1485 1486 return (SUCCESS); 1487 } 1488 1489 int 1490 get_namelist(pwu_repository_t repository, char ***namelist, int *num_user) 1491 { 1492 if (IS_LDAP(repository)) { 1493 local_config = NSS_LDAP_ONLY; 1494 return (get_namelist_local(namelist, num_user)); 1495 } else if (IS_FILES(repository)) 1496 return (get_namelist_files(namelist, num_user)); 1497 1498 rusage(); 1499 return (BADSYN); 1500 } 1501 1502 /* 1503 * 1504 * passwd_exit(): 1505 * This function will call exit() with appropriate exit code 1506 * according to the input "retcode" value. 1507 * It also calls pam_end() to clean-up buffers before exit. 1508 * 1509 */ 1510 1511 void 1512 passwd_exit(int retcode) 1513 { 1514 1515 if (pamh) 1516 (void) pam_end(pamh, pam_retval); 1517 1518 switch (retcode) { 1519 case SUCCESS: 1520 break; 1521 case NOPERM: 1522 (void) fprintf(stderr, "%s\n", gettext(MSG_NP)); 1523 break; 1524 case BADOPT: 1525 (void) fprintf(stderr, "%s\n", gettext(MSG_BS)); 1526 break; 1527 case FMERR: 1528 (void) fprintf(stderr, "%s\n", gettext(MSG_FE)); 1529 break; 1530 case FATAL: 1531 (void) fprintf(stderr, "%s\n", gettext(MSG_FF)); 1532 break; 1533 case FBUSY: 1534 (void) fprintf(stderr, "%s\n", gettext(MSG_FB)); 1535 break; 1536 case BADSYN: 1537 (void) fprintf(stderr, "%s\n", gettext(MSG_NV)); 1538 break; 1539 case BADAGE: 1540 (void) fprintf(stderr, "%s\n", gettext(MSG_AD)); 1541 break; 1542 case NOMEM: 1543 (void) fprintf(stderr, "%s\n", gettext(MSG_NM)); 1544 break; 1545 default: 1546 (void) fprintf(stderr, "%s\n", gettext(MSG_NP)); 1547 retcode = NOPERM; 1548 break; 1549 } 1550 /* write password record */ 1551 if (event != NULL) { 1552 if (adt_put_event(event, 1553 retcode == SUCCESS ? ADT_SUCCESS : ADT_FAILURE, 1554 retcode == SUCCESS ? ADT_SUCCESS : ADT_FAIL_PAM + 1555 pam_retval) != 0) { 1556 adt_free_event(event); 1557 (void) adt_end_session(ah); 1558 perror("adt_put_event"); 1559 exit(retcode); 1560 } 1561 adt_free_event(event); 1562 } 1563 (void) adt_end_session(ah); 1564 exit(retcode); 1565 } 1566 1567 /* 1568 * 1569 * passwd_conv(): 1570 * This is the conv (conversation) function called from 1571 * a PAM authentication module to print error messages 1572 * or garner information from the user. 1573 * 1574 */ 1575 1576 /*ARGSUSED*/ 1577 static int 1578 passwd_conv(int num_msg, struct pam_message **msg, 1579 struct pam_response **response, void *appdata_ptr) 1580 { 1581 struct pam_message *m; 1582 struct pam_response *r; 1583 char *temp; 1584 int k, i; 1585 1586 if (num_msg <= 0) 1587 return (PAM_CONV_ERR); 1588 1589 *response = (struct pam_response *)calloc(num_msg, 1590 sizeof (struct pam_response)); 1591 if (*response == NULL) 1592 return (PAM_BUF_ERR); 1593 1594 k = num_msg; 1595 m = *msg; 1596 r = *response; 1597 while (k--) { 1598 1599 switch (m->msg_style) { 1600 1601 case PAM_PROMPT_ECHO_OFF: 1602 temp = getpassphrase(m->msg); 1603 if (temp != NULL) { 1604 r->resp = strdup(temp); 1605 (void) memset(temp, 0, strlen(temp)); 1606 if (r->resp == NULL) { 1607 /* free responses */ 1608 r = *response; 1609 for (i = 0; i < num_msg; i++, r++) { 1610 if (r->resp) 1611 free(r->resp); 1612 } 1613 free(*response); 1614 *response = NULL; 1615 return (PAM_BUF_ERR); 1616 } 1617 } 1618 m++; 1619 r++; 1620 break; 1621 1622 case PAM_PROMPT_ECHO_ON: 1623 if (m->msg != NULL) { 1624 (void) fputs(m->msg, stdout); 1625 } 1626 r->resp = (char *)calloc(PAM_MAX_RESP_SIZE, 1627 sizeof (char)); 1628 if (r->resp == NULL) { 1629 /* free responses */ 1630 r = *response; 1631 for (i = 0; i < num_msg; i++, r++) { 1632 if (r->resp) 1633 free(r->resp); 1634 } 1635 free(*response); 1636 *response = NULL; 1637 return (PAM_BUF_ERR); 1638 } 1639 if (fgets(r->resp, PAM_MAX_RESP_SIZE-1, stdin)) { 1640 int len = strlen(r->resp); 1641 if (r->resp[len-1] == '\n') 1642 r->resp[len-1] = '\0'; 1643 } 1644 m++; 1645 r++; 1646 break; 1647 1648 case PAM_ERROR_MSG: 1649 if (m->msg != NULL) { 1650 (void) fputs(m->msg, stderr); 1651 (void) fputs("\n", stderr); 1652 } 1653 m++; 1654 r++; 1655 break; 1656 case PAM_TEXT_INFO: 1657 if (m->msg != NULL) { 1658 (void) fputs(m->msg, stdout); 1659 (void) fputs("\n", stdout); 1660 } 1661 m++; 1662 r++; 1663 break; 1664 1665 default: 1666 break; 1667 } 1668 } 1669 return (PAM_SUCCESS); 1670 } 1671 1672 /* 1673 * Utilities Functions 1674 */ 1675 1676 /* 1677 * int attrlist_add(attrlist **l, attrtype type, char *val) 1678 * add an item, with type "type" and value "val", at the tail of list l. 1679 * This functions exits the application on OutOfMem error. 1680 */ 1681 void 1682 attrlist_add(attrlist **l, attrtype type, char *val) 1683 { 1684 attrlist **w; 1685 1686 /* tail insert */ 1687 for (w = l; *w != NULL; w = &(*w)->next) 1688 ; 1689 1690 if ((*w = malloc(sizeof (**w))) == NULL) 1691 passwd_exit(NOMEM); 1692 1693 (*w)->type = type; 1694 (*w)->next = NULL; 1695 1696 switch (type) { 1697 case ATTR_MIN: 1698 case ATTR_WARN: 1699 case ATTR_MAX: 1700 (*w)->data.val_i = atoi(val); 1701 break; 1702 default: 1703 (*w)->data.val_s = val; 1704 break; 1705 } 1706 } 1707 1708 /* 1709 * attrlist_reorder(attrlist **l) 1710 * Make sure that 1711 * - if EXPIRE and MAX or MIN is set, EXPIRE comes after MAX/MIN 1712 * - if both MIN and MAX are set, MAX comes before MIN. 1713 */ 1714 1715 static void 1716 attrlist_reorder(attrlist **l) 1717 { 1718 attrlist **w; 1719 attrlist *exp = NULL; /* ATTR_EXPIRE_PASSWORD, if found */ 1720 attrlist *max = NULL; /* ATTR_MAX, if found */ 1721 1722 if (*l == NULL || (*l)->next == NULL) 1723 return; /* order of list with <= one item is ok */ 1724 1725 /* 1726 * We simply walk the list, take off the EXPIRE and MAX items if 1727 * they appear, and put them (first MAX, them EXPIRE) at the end 1728 * of the list. 1729 */ 1730 w = l; 1731 while (*w != NULL) { 1732 if ((*w)->type == ATTR_EXPIRE_PASSWORD) { 1733 exp = *w; 1734 *w = (*w)->next; 1735 } else if ((*w)->type == ATTR_MAX) { 1736 max = *w; 1737 *w = (*w)->next; 1738 } else 1739 w = &(*w)->next; 1740 } 1741 1742 /* 'w' points to the address of the 'next' field of the last element */ 1743 1744 if (max) { 1745 *w = max; 1746 w = &max->next; 1747 } 1748 if (exp) { 1749 *w = exp; 1750 w = &exp->next; 1751 } 1752 *w = NULL; 1753 } 1754 1755 void 1756 rusage(void) 1757 { 1758 1759 #define MSG(a) (void) fprintf(stderr, gettext((a))); 1760 1761 MSG("usage:\n"); 1762 MSG("\tpasswd [-r files | -r nis | -r ldap] [name]\n"); 1763 MSG("\tpasswd [-r files] [-egh] [name]\n"); 1764 MSG("\tpasswd [-r files] -sa\n"); 1765 MSG("\tpasswd [-r files] -s [name]\n"); 1766 MSG("\tpasswd [-r files] [-d|-l|-N|-u] [-f] [-n min] [-w warn] " 1767 "[-x max] name\n"); 1768 MSG("\tpasswd -r nis [-eg] [name]\n"); 1769 MSG("\t\t[-x max] name\n"); 1770 MSG("\tpasswd -r ldap [-egh] [name]\n"); 1771 MSG("\tpasswd -r ldap -sa\n"); 1772 MSG("\tpasswd -r ldap -s [name]\n"); 1773 MSG("\tpasswd -r ldap [-l|-N|-u] [-f] [-n min] [-w warn] " 1774 "[-x max] name\n"); 1775 #undef MSG 1776 } 1777