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 2010 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], '/')) != NULL) 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 } 296 297 if (pam_start("passwd", usrname, &pam_conv, &pamh) != PAM_SUCCESS) { 298 passwd_exit(NOPERM); 299 } 300 301 auth_rep.type = repository.type; 302 auth_rep.scope = repository.scope; 303 auth_rep.scope_len = repository.scope_len; 304 305 if (auth_rep.type != NULL) { 306 if (pam_set_item(pamh, PAM_REPOSITORY, (void *)&auth_rep) 307 != PAM_SUCCESS) { 308 passwd_exit(NOPERM); 309 } 310 } 311 312 if (flag == SAFLAG) { /* display password attributes for all users */ 313 retval = get_namelist(repository, &namelist, &num_user); 314 if (retval != SUCCESS) 315 (void) passwd_exit(retval); 316 317 if (num_user == 0) { 318 (void) fprintf(stderr, "%s: %s\n", prognamep, 319 gettext(MSG_FF)); 320 passwd_exit(FATAL); 321 } 322 i = 0; 323 while (namelist[i] != NULL) { 324 (void) get_attr(namelist[i], &repository, 325 &attributes); 326 (void) display_attr(namelist[i], attributes); 327 (void) free(namelist[i]); 328 (void) free_attr(attributes); 329 i++; 330 } 331 (void) free(namelist); 332 passwd_exit(SUCCESS); 333 } else if (flag == SFLAG) { /* display password attributes by user */ 334 if (get_attr(usrname, &repository, &attributes) == 335 PWU_SUCCESS) { 336 (void) display_attr(usrname, attributes); 337 (void) free_attr(attributes); 338 } 339 passwd_exit(SUCCESS); 340 /* NOT REACHED */ 341 } 342 343 344 switch (pam_authenticate(pamh, 0)) { 345 case PAM_SUCCESS: 346 break; 347 case PAM_USER_UNKNOWN: 348 (void) fprintf(stderr, gettext(MSG_UNKNOWN), prognamep, 349 usrname); 350 passwd_exit(NOPERM); 351 break; 352 case PAM_PERM_DENIED: 353 passwd_exit(NOPERM); 354 break; 355 case PAM_AUTH_ERR: 356 (void) fprintf(stderr, gettext(MSG_SORRY), prognamep); 357 passwd_exit(NOPERM); 358 break; 359 default: 360 /* system error */ 361 passwd_exit(FMERR); 362 break; 363 } 364 365 if (flag == 0) { /* changing user password */ 366 int chk_authtok = 0; /* check password strength */ 367 368 dprintf1("call pam_chauthtok() repository name =%s\n", 369 repository.type); 370 371 /* Set up for Audit */ 372 if (adt_start_session(&ah, NULL, ADT_USE_PROC_DATA) != 0) { 373 perror("adt_start_session"); 374 passwd_exit(SYSERR); 375 } 376 if ((event = adt_alloc_event(ah, ADT_passwd)) == NULL) { 377 perror("adt_alloc_event"); 378 passwd_exit(NOMEM); 379 } 380 381 /* Don't check account expiration when invoked by root */ 382 if (ckuid() != SUCCESS) { 383 pam_retval = pam_acct_mgmt(pamh, PAM_SILENT); 384 switch (pam_retval) { 385 case PAM_ACCT_EXPIRED: 386 (void) fprintf(stderr, 387 gettext(MSG_ACCOUNT_EXP), usrname); 388 passwd_exit(EXPIRED); 389 break; 390 case PAM_AUTHTOK_EXPIRED: 391 (void) fprintf(stderr, 392 gettext(MSG_AUTHTOK_EXP)); 393 passwd_exit(NOPERM); 394 break; 395 case PAM_NEW_AUTHTOK_REQD: 396 /* valid error when changing passwords */ 397 break; 398 case PAM_SUCCESS: 399 /* Ok to change password */ 400 break; 401 default: 402 passwd_exit(NOPERM); 403 } 404 } 405 406 407 pam_retval = PAM_AUTHTOK_ERR; 408 tries = 1; 409 if (ckuid() == SUCCESS) { 410 /* bypass password strength checks */ 411 chk_authtok = PAM_NO_AUTHTOK_CHECK; 412 } 413 414 while (pam_retval == PAM_AUTHTOK_ERR && tries <= DEF_ATTEMPTS) { 415 if (tries > 1) 416 (void) printf(gettext(MSG_AGAIN)); 417 pam_retval = pam_chauthtok(pamh, chk_authtok); 418 if (pam_retval == PAM_TRY_AGAIN) { 419 (void) sleep(1); 420 pam_retval = pam_chauthtok(pamh, chk_authtok); 421 } 422 tries++; 423 } 424 425 switch (pam_retval) { 426 case PAM_SUCCESS: 427 retval = SUCCESS; 428 break; 429 case PAM_AUTHTOK_DISABLE_AGING: 430 retval = BADAGE; 431 break; 432 case PAM_AUTHTOK_LOCK_BUSY: 433 retval = FBUSY; 434 break; 435 case PAM_TRY_AGAIN: 436 retval = FBUSY; 437 break; 438 case PAM_AUTHTOK_ERR: 439 case PAM_AUTHTOK_RECOVERY_ERR: 440 default: 441 retval = NOPERM; 442 break; 443 } 444 445 (void) passwd_exit(retval); 446 /* NOT REACHED */ 447 } else { /* changing attributes */ 448 switch (flag) { 449 case EFLAG: /* changing user password attributes */ 450 input = userinput(usrname, &repository, ATTR_SHELL); 451 if (input) 452 attrlist_add(&attributes, ATTR_SHELL, input); 453 else 454 (void) printf(gettext(MSG_SHELL_UNCHANGED)); 455 break; 456 case GFLAG: 457 input = userinput(usrname, &repository, ATTR_GECOS); 458 if (input) 459 attrlist_add(&attributes, ATTR_GECOS, input); 460 else 461 (void) printf(gettext(MSG_GECOS_UNCHANGED)); 462 break; 463 case HFLAG: 464 input = userinput(usrname, &repository, ATTR_HOMEDIR); 465 if (input) 466 attrlist_add(&attributes, ATTR_HOMEDIR, input); 467 else 468 (void) printf(gettext(MSG_DIR_UNCHANGED)); 469 break; 470 } 471 472 if (attributes != NULL) { 473 retval = __set_authtoken_attr(usrname, 474 pamh->ps_item[PAM_AUTHTOK].pi_addr, 475 &repository, attributes, &updated_reps); 476 switch (retval) { 477 case PWU_SUCCESS: 478 for (i = 1; i <= REP_LAST; i <<= 1) { 479 if ((updated_reps & i) == 0) 480 continue; 481 (void) printf(gettext(MSG_SUCCESS), 482 prognamep, usrname); 483 } 484 retval = SUCCESS; 485 break; 486 case PWU_AGING_DISABLED: 487 retval = BADAGE; 488 break; 489 default: 490 retval = NOPERM; 491 break; 492 } 493 } else { 494 retval = SUCCESS; /* nothing to change won't fail */ 495 } 496 (void) passwd_exit(retval); 497 } 498 /* NOTREACHED */ 499 return (0); 500 } 501 502 /* 503 * Get a line of input from the user. 504 * 505 * If the line is empty, or the input equals 'oldval', NULL is returned. 506 * therwise, a malloced string containing the input (minus the trailing 507 * newline) is returned. 508 */ 509 char * 510 getresponse(char *oldval) 511 { 512 char resp[MAX_INPUT_LEN]; 513 char *retval = NULL; 514 int resplen; 515 516 (void) fgets(resp, sizeof (resp) - 1, stdin); 517 resplen = strlen(resp) - 1; 518 if (resp[resplen] == '\n') 519 resp[resplen] = '\0'; 520 if (*resp != '\0' && strcmp(resp, oldval) != 0) 521 retval = strdup(resp); 522 return (retval); 523 } 524 525 /* 526 * char *userinput(item) 527 * 528 * user conversation function. The old value of attribute "item" is 529 * displayed while the user is asked to provide a new value. 530 * 531 * returns a malloc()-ed string if the user actualy provided input 532 * or NULL if the user simply hit return or the input equals the old 533 * value (not changed). 534 */ 535 char * 536 userinput(char *name, pwu_repository_t *rep, attrtype type) 537 { 538 attrlist oldattr; 539 char *oldval; /* shorthand for oldattr.data.val_s */ 540 char *valid; /* points to valid shells */ 541 char *response; 542 char *cp; 543 544 oldattr.type = type; 545 oldattr.next = NULL; 546 547 if (__get_authtoken_attr(name, rep, &oldattr) != PWU_SUCCESS) 548 passwd_exit(FMERR); 549 550 oldval = oldattr.data.val_s; 551 552 if (type == ATTR_SHELL) { 553 /* No current shell: set DEFSHL as default choice */ 554 if (*oldval == '\0') { 555 free(oldval); 556 oldval = strdup(DEFSHL); 557 } 558 559 if (ckuid() != SUCCESS) { 560 /* User must currently have a valid shell */ 561 setusershell(); 562 valid = getusershell(); 563 while (valid && strcmp(valid, oldval) != 0) 564 valid = getusershell(); 565 endusershell(); 566 567 if (valid == NULL) { 568 (void) fprintf(stderr, gettext(MSG_RS), oldval); 569 free(oldval); 570 return (NULL); 571 } 572 } 573 (void) printf(gettext(MSG_OLDSHELL), oldval); 574 (void) printf(gettext(MSG_NEWSHELL)); 575 (void) fflush(stdout); 576 577 response = getresponse(oldval); 578 free(oldval); /* We don't need the old value anymore */ 579 580 if (response == NULL || *response == '\0') 581 return (NULL); 582 583 /* Make sure new shell is listed */ 584 setusershell(); 585 valid = getusershell(); 586 while (valid) { 587 char *cp; 588 589 /* Allow user to give shell without path */ 590 if (*response == '/') { 591 cp = valid; 592 } else { 593 if ((cp = strrchr(valid, '/')) == NULL) 594 cp = valid; 595 else 596 cp++; 597 } 598 if (strcmp(cp, response) == 0) { 599 if (*response != '/') { 600 /* take shell name including path */ 601 free(response); 602 response = strdup(valid); 603 } 604 break; 605 } 606 valid = getusershell(); 607 } 608 endusershell(); 609 610 if (valid == NULL) { /* No valid shell matches */ 611 (void) fprintf(stderr, gettext(MSG_UNACCEPT), response); 612 return (NULL); 613 } 614 615 if (access(response, X_OK) < 0) 616 (void) fprintf(stderr, gettext(MSG_UNAVAIL), response); 617 return (response); 618 /* NOT REACHED */ 619 } 620 /* 621 * if type == SHELL, we have returned by now. Only GECOS and 622 * HOMEDIR get to this point. 623 */ 624 (void) printf(gettext(MSG_INPUTHDR)); 625 626 /* 627 * PRE: oldval points to malloced string with Old Value 628 * INV: oldval remains unchanged 629 * POST:response points to valid string or NULL. 630 */ 631 for (;;) { 632 if (type == ATTR_GECOS) 633 (void) printf(gettext(MSG_NAME), oldval); 634 else if (type == ATTR_HOMEDIR) 635 (void) printf(gettext(MSG_HOMEDIR), oldval); 636 637 response = getresponse(oldval); 638 639 if (response && strcmp(response, "none") == 0) 640 *response = '\0'; 641 642 /* No-change or empty string are OK */ 643 if (response == NULL || *response == '\0') 644 break; 645 646 /* Check for illegal characters */ 647 if (strchr(response, ':')) { 648 (void) fprintf(stderr, "%s", gettext(MSG_COLON)); 649 free(response); 650 } else if (strlen(response) > MAX_INPUT_LEN - 1) { 651 (void) fprintf(stderr, gettext(MSG_MAXLEN), 652 MAX_INPUT_LEN); 653 free(response); 654 } else { 655 /* don't allow control characters */ 656 for (cp = response; *cp >= 040; cp++) 657 ; 658 if (*cp != '\0') { 659 (void) fprintf(stderr, gettext(MSG_CONTROL)); 660 free(response); 661 } else 662 break; /* response is a valid string */ 663 } 664 /* 665 * We only get here if the input was invalid. 666 * In that case, we again ask the user for input. 667 */ 668 } 669 free(oldval); 670 return (response); 671 } 672 /* 673 * ckarg(): 674 * This function parses and verifies the 675 * arguments. It takes three parameters: 676 * argc => # of arguments 677 * argv => pointer to an argument 678 * attrlist => pointer to list of password attributes 679 */ 680 681 static int 682 ckarg(int argc, char **argv, attrlist **attributes) 683 { 684 extern char *optarg; 685 char *char_p; 686 int opt; 687 int flag; 688 689 flag = 0; 690 691 while ((opt = getopt(argc, argv, "r:aldefghsux:n:w:N")) != EOF) { 692 switch (opt) { 693 694 case 'r': /* Repository Specified */ 695 /* repository: this option should be specified first */ 696 697 if (repository.type != NULL) { 698 (void) fprintf(stderr, gettext( 699 "Repository is already defined or specified.\n")); 700 rusage(); 701 retval = BADSYN; 702 return (FAIL); 703 } 704 if (strcmp(optarg, "nis") == 0) { 705 repository.type = optarg; 706 } else if (strcmp(optarg, "ldap") == 0) { 707 repository.type = optarg; 708 } else if (strcmp(optarg, "files") == 0) { 709 repository.type = optarg; 710 } else { 711 (void) fprintf(stderr, 712 gettext("invalid repository: %s\n"), 713 optarg); 714 rusage(); 715 retval = BADSYN; 716 return (FAIL); 717 } 718 break; 719 720 case 'd': /* Delete Auth Token */ 721 /* if no repository the default for -d is files */ 722 if (repository.type == NULL) 723 repository = __REPFILES; 724 725 /* 726 * Delete the password - only privileged processes 727 * can execute this for FILES or LDAP 728 */ 729 if (IS_FILES(repository) == FALSE && 730 IS_LDAP(repository) == FALSE) { 731 (void) fprintf(stderr, gettext( 732 "-d only applies to files " 733 "or ldap repository\n")); 734 rusage(); /* exit */ 735 retval = BADSYN; 736 return (FAIL); 737 } 738 739 if (ckuid() != SUCCESS) { 740 retval = NOPERM; 741 return (FAIL); 742 } 743 if (flag & (LFLAG|SAFLAG|DFLAG|XFLAG|UFLAG)) { 744 rusage(); 745 retval = BADOPT; 746 return (FAIL); 747 } 748 flag |= DFLAG; 749 attrlist_add(attributes, ATTR_PASSWD, NULL); 750 break; 751 752 case 'N': /* set account to be "no login" */ 753 754 /* if no repository the default for -N is files */ 755 if (repository.type == NULL) 756 repository = __REPFILES; 757 758 if (IS_FILES(repository) == FALSE && 759 IS_LDAP(repository) == FALSE) { 760 (void) fprintf(stderr, gettext( 761 "-N only applies to files or ldap " 762 "repository\n")); 763 rusage(); /* exit */ 764 retval = BADOPT; 765 return (FAIL); 766 } 767 768 /* 769 * Only privileged processes can execute this 770 * for FILES or LDAP 771 */ 772 if ((IS_FILES(repository) || IS_LDAP(repository)) && 773 ((retval = ckuid()) != SUCCESS)) 774 return (FAIL); 775 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 776 rusage(); /* exit */ 777 retval = BADOPT; 778 return (FAIL); 779 } 780 flag |= XFLAG; 781 attrlist_add(attributes, ATTR_NOLOGIN_ACCOUNT, NULL); 782 break; 783 784 case 'l': /* lock the password */ 785 786 /* if no repository the default for -l is files */ 787 if (repository.type == NULL) 788 repository = __REPFILES; 789 790 if (IS_FILES(repository) == FALSE && 791 IS_LDAP(repository) == FALSE) { 792 (void) fprintf(stderr, gettext( 793 "-l only applies to files or ldap " 794 "repository\n")); 795 rusage(); /* exit */ 796 retval = BADOPT; 797 return (FAIL); 798 } 799 800 /* 801 * Only privileged processes can execute this 802 * for FILES or LDAP 803 */ 804 if ((IS_FILES(repository) || IS_LDAP(repository)) && 805 ((retval = ckuid()) != SUCCESS)) 806 return (FAIL); 807 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 808 rusage(); /* exit */ 809 retval = BADOPT; 810 return (FAIL); 811 } 812 flag |= LFLAG; 813 attrlist_add(attributes, ATTR_LOCK_ACCOUNT, NULL); 814 break; 815 816 case 'u': /* unlock the password */ 817 818 /* if no repository the default for -u is files */ 819 if (repository.type == NULL) 820 repository = __REPFILES; 821 822 if (IS_FILES(repository) == FALSE && 823 IS_LDAP(repository) == FALSE) { 824 (void) fprintf(stderr, gettext( 825 "-u only applies to files or ldap " 826 "repository\n")); 827 rusage(); /* exit */ 828 retval = BADOPT; 829 return (FAIL); 830 } 831 832 /* 833 * Only privileged processes can execute this 834 * for FILES or LDAP 835 */ 836 if ((IS_FILES(repository) || IS_LDAP(repository)) && 837 ((retval = ckuid()) != SUCCESS)) 838 return (FAIL); 839 if (flag & (MUTEXFLAG|NONAGEFLAG)) { 840 rusage(); /* exit */ 841 retval = BADOPT; 842 return (FAIL); 843 } 844 flag |= UFLAG; 845 attrlist_add(attributes, ATTR_UNLOCK_ACCOUNT, NULL); 846 attrlist_add(attributes, ATTR_RST_FAILED_LOGINS, NULL); 847 break; 848 849 case 'x': /* set the max date */ 850 851 /* if no repository the default for -x is files */ 852 if (repository.type == NULL) 853 repository = __REPFILES; 854 855 if (IS_FILES(repository) == FALSE && 856 IS_LDAP(repository) == FALSE) { 857 (void) fprintf(stderr, gettext( 858 "-x only applies to files or ldap " 859 "repository\n")); 860 rusage(); /* exit */ 861 retval = BADSYN; 862 return (FAIL); 863 } 864 865 /* 866 * Only privileged process can execute this 867 * for FILES or LDAP 868 */ 869 if ((IS_FILES(repository) || IS_LDAP(repository)) && 870 (ckuid() != SUCCESS)) { 871 retval = NOPERM; 872 return (FAIL); 873 } 874 if (flag & (SAFLAG|MFLAG|NONAGEFLAG)) { 875 retval = BADOPT; 876 return (FAIL); 877 } 878 flag |= MFLAG; 879 if ((int)strlen(optarg) <= 0 || 880 (maxdate = strtol(optarg, &char_p, 10)) < -1 || 881 *char_p != '\0') { 882 (void) fprintf(stderr, "%s: %s -x\n", 883 prognamep, gettext(MSG_NV)); 884 retval = BADSYN; 885 return (FAIL); 886 } 887 attrlist_add(attributes, ATTR_MAX, optarg); 888 break; 889 890 case 'n': /* set the min date */ 891 892 /* if no repository the default for -n is files */ 893 if (repository.type == NULL) 894 repository = __REPFILES; 895 896 if (IS_FILES(repository) == FALSE && 897 IS_LDAP(repository) == FALSE) { 898 (void) fprintf(stderr, gettext( 899 "-n only applies to files or ldap " 900 "repository\n")); 901 rusage(); /* exit */ 902 retval = BADSYN; 903 return (FAIL); 904 } 905 906 /* 907 * Only privileged process can execute this 908 * for FILES or LDAP 909 */ 910 if ((IS_FILES(repository) || IS_LDAP(repository)) && 911 ((retval = ckuid()) != SUCCESS)) 912 return (FAIL); 913 if (flag & (SAFLAG|NFLAG|NONAGEFLAG)) { 914 retval = BADOPT; 915 return (FAIL); 916 } 917 flag |= NFLAG; 918 if ((int)strlen(optarg) <= 0 || 919 (strtol(optarg, &char_p, 10)) < 0 || 920 *char_p != '\0') { 921 (void) fprintf(stderr, "%s: %s -n\n", 922 prognamep, gettext(MSG_NV)); 923 retval = BADSYN; 924 return (FAIL); 925 } 926 attrlist_add(attributes, ATTR_MIN, optarg); 927 break; 928 929 case 'w': /* set the warning field */ 930 931 /* if no repository the default for -w is files */ 932 if (repository.type == NULL) 933 repository = __REPFILES; 934 935 if (IS_FILES(repository) == FALSE && 936 IS_LDAP(repository) == FALSE) { 937 (void) fprintf(stderr, gettext( 938 "-w only applies to files or ldap " 939 "repository\n")); 940 rusage(); /* exit */ 941 retval = BADSYN; 942 return (FAIL); 943 } 944 945 /* 946 * Only privileged process can execute this 947 * for FILES or LDAP 948 */ 949 if ((IS_FILES(repository) || IS_LDAP(repository)) && 950 (ckuid() != SUCCESS)) { 951 retval = NOPERM; 952 return (FAIL); 953 } 954 if (flag & (SAFLAG|WFLAG|NONAGEFLAG)) { 955 retval = BADOPT; 956 return (FAIL); 957 } 958 flag |= WFLAG; 959 if ((int)strlen(optarg) <= 0 || 960 (strtol(optarg, &char_p, 10)) < 0 || 961 *char_p != '\0') { 962 (void) fprintf(stderr, "%s: %s -w\n", 963 prognamep, gettext(MSG_NV)); 964 retval = BADSYN; 965 return (FAIL); 966 } 967 attrlist_add(attributes, ATTR_WARN, optarg); 968 break; 969 970 case 's': /* display password attributes */ 971 972 /* if no repository the default for -s is files */ 973 if (repository.type == NULL) 974 repository = __REPFILES; 975 976 977 /* display password attributes */ 978 if (IS_FILES(repository) == FALSE && 979 IS_LDAP(repository) == FALSE) { 980 (void) fprintf(stderr, gettext( 981 "-s only applies to files or ldap " 982 "repository\n")); 983 rusage(); /* exit */ 984 retval = BADSYN; 985 return (FAIL); 986 } 987 988 /* 989 * Only privileged process can execute this 990 * for FILES or LDAP 991 */ 992 if ((IS_FILES(repository) || IS_LDAP(repository)) && 993 ((retval = ckuid()) != SUCCESS)) 994 return (FAIL); 995 if (flag && (flag != AFLAG)) { 996 retval = BADOPT; 997 return (FAIL); 998 } 999 flag |= SFLAG; 1000 break; 1001 1002 case 'a': /* display password attributes */ 1003 1004 /* if no repository the default for -a is files */ 1005 if (repository.type == NULL) 1006 repository = __REPFILES; 1007 1008 if (IS_FILES(repository) == FALSE && 1009 IS_LDAP(repository) == FALSE) { 1010 (void) fprintf(stderr, gettext( 1011 "-a only applies to files or ldap " 1012 "repository\n")); 1013 rusage(); /* exit */ 1014 retval = BADSYN; 1015 return (FAIL); 1016 } 1017 1018 /* 1019 * Only privileged process can execute this 1020 * for FILES or LDAP 1021 */ 1022 if ((IS_FILES(repository) || IS_LDAP(repository)) && 1023 ((retval = ckuid()) != SUCCESS)) 1024 return (FAIL); 1025 if (flag && (flag != SFLAG)) { 1026 retval = BADOPT; 1027 return (FAIL); 1028 } 1029 flag |= AFLAG; 1030 break; 1031 1032 case 'f': /* expire password attributes */ 1033 1034 /* if no repository the default for -f is files */ 1035 if (repository.type == NULL) 1036 repository = __REPFILES; 1037 1038 if (IS_FILES(repository) == FALSE && 1039 IS_LDAP(repository) == FALSE) { 1040 (void) fprintf(stderr, gettext( 1041 "-f only applies to files or ldap " 1042 "repository\n")); 1043 rusage(); /* exit */ 1044 retval = BADSYN; 1045 return (FAIL); 1046 } 1047 1048 /* 1049 * Only privileged process can execute this 1050 * for FILES or LDAP 1051 */ 1052 if ((IS_FILES(repository) || IS_LDAP(repository)) && 1053 ((retval = ckuid()) != SUCCESS)) 1054 return (FAIL); 1055 if (flag & (SAFLAG|FFLAG|NONAGEFLAG)) { 1056 retval = BADOPT; 1057 return (FAIL); 1058 } 1059 flag |= FFLAG; 1060 attrlist_add(attributes, ATTR_EXPIRE_PASSWORD, NULL); 1061 break; 1062 1063 case 'e': /* change login shell */ 1064 1065 /* if no repository the default for -e is files */ 1066 if (repository.type == NULL) 1067 repository = __REPFILES; 1068 1069 if (flag & (EFLAG|SAFLAG|AGEFLAG)) { 1070 retval = BADOPT; 1071 return (FAIL); 1072 } 1073 flag |= EFLAG; 1074 break; 1075 1076 case 'g': /* change gecos information */ 1077 1078 /* if no repository the default for -g is files */ 1079 if (repository.type == NULL) 1080 repository = __REPFILES; 1081 1082 /* 1083 * Only privileged process can execute this 1084 * for FILES 1085 */ 1086 if (IS_FILES(repository) && (ckuid() != SUCCESS)) { 1087 retval = NOPERM; 1088 return (FAIL); 1089 } 1090 if (flag & (GFLAG|SAFLAG|AGEFLAG)) { 1091 retval = BADOPT; 1092 return (FAIL); 1093 } 1094 flag |= GFLAG; 1095 break; 1096 1097 case 'h': /* change home dir */ 1098 1099 /* if no repository the default for -h is files */ 1100 if (repository.type == NULL) 1101 repository = __REPFILES; 1102 /* 1103 * Only privileged process can execute this 1104 * for FILES 1105 */ 1106 if (IS_FILES(repository) && (ckuid() != SUCCESS)) { 1107 retval = NOPERM; 1108 return (FAIL); 1109 } 1110 if (IS_NIS(repository)) { 1111 (void) fprintf(stderr, "%s\n", 1112 gettext(MSG_NIS_HOMEDIR)); 1113 retval = BADSYN; 1114 return (FAIL); 1115 } 1116 1117 if (flag & (HFLAG|SAFLAG|AGEFLAG)) { 1118 retval = BADOPT; 1119 return (FAIL); 1120 } 1121 flag |= HFLAG; 1122 break; 1123 1124 case '?': 1125 rusage(); 1126 retval = BADOPT; 1127 return (FAIL); 1128 } 1129 } 1130 1131 argc -= optind; 1132 if (argc > 1) { 1133 rusage(); 1134 retval = BADSYN; 1135 return (FAIL); 1136 } 1137 1138 /* Make sure (EXPIRE comes after (MAX comes after MIN)) */ 1139 attrlist_reorder(attributes); 1140 1141 /* If no options are specified or only the show option */ 1142 /* is specified, return because no option error checking */ 1143 /* is needed */ 1144 if (!flag || (flag == SFLAG)) 1145 return (flag); 1146 1147 /* AFLAG must be used with SFLAG */ 1148 if (flag == AFLAG) { 1149 rusage(); 1150 retval = BADSYN; 1151 return (FAIL); 1152 } 1153 1154 if (flag != SAFLAG && argc < 1) { 1155 /* 1156 * user name is not specified (argc<1), it can't be 1157 * aging info update. 1158 */ 1159 if (!(flag & NONAGEFLAG)) { 1160 rusage(); 1161 retval = BADSYN; 1162 return (FAIL); 1163 } 1164 } 1165 1166 /* user name(s) may not be specified when SAFLAG is used. */ 1167 if (flag == SAFLAG && argc >= 1) { 1168 rusage(); 1169 retval = BADSYN; 1170 return (FAIL); 1171 } 1172 1173 /* 1174 * If aging is being turned off (maxdate == -1), mindate may not 1175 * be specified. 1176 */ 1177 if ((maxdate == -1) && (flag & NFLAG)) { 1178 (void) fprintf(stderr, "%s: %s -n\n", 1179 prognamep, gettext(MSG_NV)); 1180 retval = BADOPT; 1181 return (FAIL); 1182 } 1183 1184 return (flag); 1185 } 1186 1187 /* 1188 * 1189 * ckuid(): 1190 * This function returns SUCCESS if the caller is root, else 1191 * it returns NOPERM. 1192 * 1193 */ 1194 1195 static int 1196 ckuid(void) 1197 { 1198 if (uid != 0) { 1199 return (retval = NOPERM); 1200 } 1201 return (SUCCESS); 1202 } 1203 1204 1205 /* 1206 * get_attr() 1207 */ 1208 int 1209 get_attr(char *username, pwu_repository_t *repository, attrlist **attributes) 1210 { 1211 int res; 1212 1213 attrlist_add(attributes, ATTR_PASSWD, NULL); 1214 attrlist_add(attributes, ATTR_LSTCHG, "0"); 1215 attrlist_add(attributes, ATTR_MIN, "0"); 1216 attrlist_add(attributes, ATTR_MAX, "0"); 1217 attrlist_add(attributes, ATTR_WARN, "0"); 1218 1219 res = __get_authtoken_attr(username, repository, *attributes); 1220 1221 if (res == PWU_SUCCESS) { 1222 retval = SUCCESS; 1223 return (PWU_SUCCESS); 1224 } 1225 1226 if (res == PWU_NOT_FOUND) 1227 (void) fprintf(stderr, gettext(MSG_UNKNOWN), prognamep, 1228 username); 1229 1230 retval = NOPERM; 1231 passwd_exit(retval); 1232 /*NOTREACHED*/ 1233 } 1234 1235 /* 1236 * display_attr(): 1237 * This function prints out the password attributes of a usr 1238 * onto standand output. 1239 */ 1240 void 1241 display_attr(char *usrname, attrlist *attributes) 1242 { 1243 char *status = NULL; 1244 char *passwd; 1245 long lstchg; 1246 int min = 0, max = 0, warn = 0; 1247 1248 while (attributes) { 1249 switch (attributes->type) { 1250 case ATTR_PASSWD: 1251 passwd = attributes->data.val_s; 1252 if (passwd == NULL || *passwd == '\0') 1253 status = "NP "; 1254 else if (strncmp(passwd, LOCKSTRING, 1255 sizeof (LOCKSTRING)-1) == 0) 1256 status = "LK "; 1257 else if (strncmp(passwd, NOLOGINSTRING, 1258 sizeof (NOLOGINSTRING)-1) == 0) 1259 status = "NL "; 1260 else if ((strlen(passwd) == 13 && passwd[0] != '$') || 1261 passwd[0] == '$') 1262 status = "PS "; 1263 else 1264 status = "UN "; 1265 break; 1266 case ATTR_LSTCHG: 1267 lstchg = attributes->data.val_i * DAY; 1268 break; 1269 case ATTR_MIN: 1270 min = attributes->data.val_i; 1271 break; 1272 case ATTR_MAX: 1273 max = attributes->data.val_i; 1274 break; 1275 case ATTR_WARN: 1276 warn = attributes->data.val_i; 1277 break; 1278 default: 1279 break; 1280 } 1281 attributes = attributes->next; 1282 } 1283 (void) fprintf(stdout, "%-8s ", usrname); 1284 1285 if (status) 1286 (void) fprintf(stdout, "%s ", status); 1287 1288 if (max != -1) { 1289 if (lstchg == 0) { 1290 (void) fprintf(stdout, "00/00/00 "); 1291 } else { 1292 struct tm *tmp; 1293 tmp = gmtime(&lstchg); 1294 (void) fprintf(stdout, "%.2d/%.2d/%.2d ", 1295 tmp->tm_mon + 1, 1296 tmp->tm_mday, 1297 tmp->tm_year % 100); 1298 } 1299 (void) fprintf(stdout, (min >= 0) ? "%4d " : " ", min); 1300 (void) fprintf(stdout, "%4d ", max); 1301 (void) fprintf(stdout, (warn > 0) ? "%4d " : " ", warn); 1302 } 1303 (void) fprintf(stdout, "\n"); 1304 } 1305 1306 void 1307 free_attr(attrlist *attributes) 1308 { 1309 while (attributes) { 1310 if (attributes->type == ATTR_PASSWD) 1311 free(attributes->data.val_s); 1312 attributes = attributes->next; 1313 } 1314 } 1315 1316 /* 1317 * 1318 * get_namelist_files(): 1319 * This function gets a list of user names on the system from 1320 * the /etc/passwd file. 1321 * 1322 */ 1323 int 1324 get_namelist_files(char ***namelist_p, int *num_user) 1325 { 1326 FILE *pwfp; 1327 struct passwd *pwd; 1328 int max_user; 1329 int nuser; 1330 char **nl; 1331 1332 nuser = 0; 1333 errno = 0; 1334 pwd = NULL; 1335 1336 if ((pwfp = fopen(PASSWD, "r")) == NULL) 1337 return (NOPERM); 1338 1339 /* 1340 * find out the actual number of entries in the PASSWD file 1341 */ 1342 max_user = 1; /* need one slot for terminator NULL */ 1343 while ((pwd = fgetpwent(pwfp)) != NULL) 1344 max_user++; 1345 1346 /* 1347 * reset the file stream pointer 1348 */ 1349 rewind(pwfp); 1350 1351 nl = (char **)calloc(max_user, (sizeof (char *))); 1352 if (nl == NULL) { 1353 (void) fclose(pwfp); 1354 return (FMERR); 1355 } 1356 1357 while ((pwd = fgetpwent(pwfp)) != NULL) { 1358 if ((nl[nuser] = strdup(pwd->pw_name)) == NULL) { 1359 (void) fclose(pwfp); 1360 return (FMERR); 1361 } 1362 nuser++; 1363 } 1364 1365 nl[nuser] = NULL; 1366 *num_user = nuser; 1367 *namelist_p = nl; 1368 (void) fclose(pwfp); 1369 return (SUCCESS); 1370 } 1371 1372 /* 1373 * get_namelist_local 1374 * 1375 */ 1376 1377 /* 1378 * Our private version of the switch frontend for getspent. We want 1379 * to search just the ldap sp file, so we want to bypass 1380 * normal nsswitch.conf based processing. This implementation 1381 * compatible with version 2 of the name service switch. 1382 */ 1383 #define NSS_LDAP_ONLY "ldap" 1384 1385 extern int str2spwd(const char *, int, void *, char *, int); 1386 1387 static DEFINE_NSS_DB_ROOT(db_root); 1388 static DEFINE_NSS_GETENT(context); 1389 1390 static char *local_config; 1391 static void 1392 _lc_nss_initf_shadow(nss_db_params_t *p) 1393 { 1394 p->name = NSS_DBNAM_SHADOW; 1395 p->config_name = NSS_DBNAM_PASSWD; /* Use config for "passwd" */ 1396 p->default_config = local_config; /* Use ldap only */ 1397 p->flags = NSS_USE_DEFAULT_CONFIG; 1398 } 1399 1400 static void 1401 _lc_setspent(void) 1402 { 1403 nss_setent(&db_root, _lc_nss_initf_shadow, &context); 1404 } 1405 1406 static void 1407 _lc_endspent(void) 1408 { 1409 nss_endent(&db_root, _lc_nss_initf_shadow, &context); 1410 nss_delete(&db_root); 1411 } 1412 1413 static struct spwd * 1414 _lc_getspent_r(struct spwd *result, char *buffer, int buflen) 1415 { 1416 nss_XbyY_args_t arg; 1417 char *nam; 1418 1419 /* In getXXent_r(), protect the unsuspecting caller from +/- entries */ 1420 1421 do { 1422 NSS_XbyY_INIT(&arg, result, buffer, buflen, str2spwd); 1423 /* No key to fill in */ 1424 (void) nss_getent(&db_root, _lc_nss_initf_shadow, &context, 1425 &arg); 1426 } while (arg.returnval != 0 && 1427 (nam = ((struct spwd *)arg.returnval)->sp_namp) != 0 && 1428 (*nam == '+' || *nam == '-')); 1429 1430 return (struct spwd *)NSS_XbyY_FINI(&arg); 1431 } 1432 1433 static nss_XbyY_buf_t *buffer; 1434 1435 static struct spwd * 1436 _lc_getspent(void) 1437 { 1438 nss_XbyY_buf_t *b; 1439 1440 b = NSS_XbyY_ALLOC(&buffer, sizeof (struct spwd), NSS_BUFLEN_SHADOW); 1441 1442 return (b == 0 ? 0 : _lc_getspent_r(b->result, b->buffer, b->buflen)); 1443 } 1444 1445 int 1446 get_namelist_local(char ***namelist_p, int *num_user) 1447 { 1448 int nuser = 0; 1449 int alloced = 100; 1450 char **nl; 1451 struct spwd *p; 1452 1453 1454 if ((nl = calloc(alloced, sizeof (*nl))) == NULL) 1455 return (FMERR); 1456 1457 (void) _lc_setspent(); 1458 while ((p = _lc_getspent()) != NULL) { 1459 if ((nl[nuser] = strdup(p->sp_namp)) == NULL) { 1460 _lc_endspent(); 1461 return (FMERR); 1462 } 1463 if (++nuser == alloced) { 1464 alloced += 100; 1465 nl = realloc(nl, alloced * (sizeof (*nl))); 1466 if (nl == NULL) { 1467 _lc_endspent(); 1468 return (FMERR); 1469 } 1470 } 1471 } 1472 (void) _lc_endspent(); 1473 nl[nuser] = NULL; 1474 1475 *namelist_p = nl; 1476 *num_user = nuser; /* including NULL */ 1477 1478 return (SUCCESS); 1479 } 1480 1481 int 1482 get_namelist(pwu_repository_t repository, char ***namelist, int *num_user) 1483 { 1484 if (IS_LDAP(repository)) { 1485 local_config = NSS_LDAP_ONLY; 1486 return (get_namelist_local(namelist, num_user)); 1487 } else if (IS_FILES(repository)) 1488 return (get_namelist_files(namelist, num_user)); 1489 1490 rusage(); 1491 return (BADSYN); 1492 } 1493 1494 /* 1495 * 1496 * passwd_exit(): 1497 * This function will call exit() with appropriate exit code 1498 * according to the input "retcode" value. 1499 * It also calls pam_end() to clean-up buffers before exit. 1500 * 1501 */ 1502 1503 void 1504 passwd_exit(int retcode) 1505 { 1506 1507 if (pamh) 1508 (void) pam_end(pamh, pam_retval); 1509 1510 switch (retcode) { 1511 case SUCCESS: 1512 break; 1513 case NOPERM: 1514 (void) fprintf(stderr, "%s\n", gettext(MSG_NP)); 1515 break; 1516 case BADOPT: 1517 (void) fprintf(stderr, "%s\n", gettext(MSG_BS)); 1518 break; 1519 case FMERR: 1520 (void) fprintf(stderr, "%s\n", gettext(MSG_FE)); 1521 break; 1522 case FATAL: 1523 (void) fprintf(stderr, "%s\n", gettext(MSG_FF)); 1524 break; 1525 case FBUSY: 1526 (void) fprintf(stderr, "%s\n", gettext(MSG_FB)); 1527 break; 1528 case BADSYN: 1529 (void) fprintf(stderr, "%s\n", gettext(MSG_NV)); 1530 break; 1531 case BADAGE: 1532 (void) fprintf(stderr, "%s\n", gettext(MSG_AD)); 1533 break; 1534 case NOMEM: 1535 (void) fprintf(stderr, "%s\n", gettext(MSG_NM)); 1536 break; 1537 default: 1538 (void) fprintf(stderr, "%s\n", gettext(MSG_NP)); 1539 retcode = NOPERM; 1540 break; 1541 } 1542 /* write password record */ 1543 if (event != NULL) { 1544 struct passwd *pass; 1545 1546 if ((pass = getpwnam(usrname)) == NULL) { 1547 /* unlikely to ever get here, but ... */ 1548 event->adt_passwd.username = usrname; 1549 } else if (pass->pw_uid != uid) { 1550 /* save target user */ 1551 event->adt_passwd.uid = pass->pw_uid; 1552 event->adt_passwd.username = pass->pw_name; 1553 } 1554 1555 if (adt_put_event(event, 1556 retcode == SUCCESS ? ADT_SUCCESS : ADT_FAILURE, 1557 retcode == SUCCESS ? ADT_SUCCESS : ADT_FAIL_PAM + 1558 pam_retval) != 0) { 1559 adt_free_event(event); 1560 (void) adt_end_session(ah); 1561 perror("adt_put_event"); 1562 exit(retcode); 1563 } 1564 adt_free_event(event); 1565 } 1566 (void) adt_end_session(ah); 1567 exit(retcode); 1568 } 1569 1570 /* 1571 * 1572 * passwd_conv(): 1573 * This is the conv (conversation) function called from 1574 * a PAM authentication module to print error messages 1575 * or garner information from the user. 1576 * 1577 */ 1578 1579 /*ARGSUSED*/ 1580 static int 1581 passwd_conv(int num_msg, struct pam_message **msg, 1582 struct pam_response **response, void *appdata_ptr) 1583 { 1584 struct pam_message *m; 1585 struct pam_response *r; 1586 char *temp; 1587 int k, i; 1588 1589 if (num_msg <= 0) 1590 return (PAM_CONV_ERR); 1591 1592 *response = (struct pam_response *)calloc(num_msg, 1593 sizeof (struct pam_response)); 1594 if (*response == NULL) 1595 return (PAM_BUF_ERR); 1596 1597 k = num_msg; 1598 m = *msg; 1599 r = *response; 1600 while (k--) { 1601 1602 switch (m->msg_style) { 1603 1604 case PAM_PROMPT_ECHO_OFF: 1605 temp = getpassphrase(m->msg); 1606 if (temp != NULL) { 1607 r->resp = strdup(temp); 1608 (void) memset(temp, 0, strlen(temp)); 1609 if (r->resp == NULL) { 1610 /* free responses */ 1611 r = *response; 1612 for (i = 0; i < num_msg; i++, r++) { 1613 if (r->resp) 1614 free(r->resp); 1615 } 1616 free(*response); 1617 *response = NULL; 1618 return (PAM_BUF_ERR); 1619 } 1620 } 1621 m++; 1622 r++; 1623 break; 1624 1625 case PAM_PROMPT_ECHO_ON: 1626 if (m->msg != NULL) { 1627 (void) fputs(m->msg, stdout); 1628 } 1629 r->resp = (char *)calloc(PAM_MAX_RESP_SIZE, 1630 sizeof (char)); 1631 if (r->resp == NULL) { 1632 /* free responses */ 1633 r = *response; 1634 for (i = 0; i < num_msg; i++, r++) { 1635 if (r->resp) 1636 free(r->resp); 1637 } 1638 free(*response); 1639 *response = NULL; 1640 return (PAM_BUF_ERR); 1641 } 1642 if (fgets(r->resp, PAM_MAX_RESP_SIZE-1, stdin)) { 1643 int len = strlen(r->resp); 1644 if (r->resp[len-1] == '\n') 1645 r->resp[len-1] = '\0'; 1646 } 1647 m++; 1648 r++; 1649 break; 1650 1651 case PAM_ERROR_MSG: 1652 if (m->msg != NULL) { 1653 (void) fputs(m->msg, stderr); 1654 (void) fputs("\n", stderr); 1655 } 1656 m++; 1657 r++; 1658 break; 1659 case PAM_TEXT_INFO: 1660 if (m->msg != NULL) { 1661 (void) fputs(m->msg, stdout); 1662 (void) fputs("\n", stdout); 1663 } 1664 m++; 1665 r++; 1666 break; 1667 1668 default: 1669 break; 1670 } 1671 } 1672 return (PAM_SUCCESS); 1673 } 1674 1675 /* 1676 * Utilities Functions 1677 */ 1678 1679 /* 1680 * int attrlist_add(attrlist **l, attrtype type, char *val) 1681 * add an item, with type "type" and value "val", at the tail of list l. 1682 * This functions exits the application on OutOfMem error. 1683 */ 1684 void 1685 attrlist_add(attrlist **l, attrtype type, char *val) 1686 { 1687 attrlist **w; 1688 1689 /* tail insert */ 1690 for (w = l; *w != NULL; w = &(*w)->next) 1691 ; 1692 1693 if ((*w = malloc(sizeof (**w))) == NULL) 1694 passwd_exit(NOMEM); 1695 1696 (*w)->type = type; 1697 (*w)->next = NULL; 1698 1699 switch (type) { 1700 case ATTR_MIN: 1701 case ATTR_WARN: 1702 case ATTR_MAX: 1703 (*w)->data.val_i = atoi(val); 1704 break; 1705 default: 1706 (*w)->data.val_s = val; 1707 break; 1708 } 1709 } 1710 1711 /* 1712 * attrlist_reorder(attrlist **l) 1713 * Make sure that 1714 * - if EXPIRE and MAX or MIN is set, EXPIRE comes after MAX/MIN 1715 * - if both MIN and MAX are set, MAX comes before MIN. 1716 */ 1717 1718 static void 1719 attrlist_reorder(attrlist **l) 1720 { 1721 attrlist **w; 1722 attrlist *exp = NULL; /* ATTR_EXPIRE_PASSWORD, if found */ 1723 attrlist *max = NULL; /* ATTR_MAX, if found */ 1724 1725 if (*l == NULL || (*l)->next == NULL) 1726 return; /* order of list with <= one item is ok */ 1727 1728 /* 1729 * We simply walk the list, take off the EXPIRE and MAX items if 1730 * they appear, and put them (first MAX, them EXPIRE) at the end 1731 * of the list. 1732 */ 1733 w = l; 1734 while (*w != NULL) { 1735 if ((*w)->type == ATTR_EXPIRE_PASSWORD) { 1736 exp = *w; 1737 *w = (*w)->next; 1738 } else if ((*w)->type == ATTR_MAX) { 1739 max = *w; 1740 *w = (*w)->next; 1741 } else 1742 w = &(*w)->next; 1743 } 1744 1745 /* 'w' points to the address of the 'next' field of the last element */ 1746 1747 if (max) { 1748 *w = max; 1749 w = &max->next; 1750 } 1751 if (exp) { 1752 *w = exp; 1753 w = &exp->next; 1754 } 1755 *w = NULL; 1756 } 1757 1758 void 1759 rusage(void) 1760 { 1761 1762 #define MSG(a) (void) fprintf(stderr, gettext((a))); 1763 1764 MSG("usage:\n"); 1765 MSG("\tpasswd [-r files | -r nis | -r ldap] [name]\n"); 1766 MSG("\tpasswd [-r files] [-egh] [name]\n"); 1767 MSG("\tpasswd [-r files] -sa\n"); 1768 MSG("\tpasswd [-r files] -s [name]\n"); 1769 MSG("\tpasswd [-r files] [-d|-l|-N|-u] [-f] [-n min] [-w warn] " 1770 "[-x max] name\n"); 1771 MSG("\tpasswd -r nis [-eg] [name]\n"); 1772 MSG("\t\t[-x max] name\n"); 1773 MSG("\tpasswd -r ldap [-egh] [name]\n"); 1774 MSG("\tpasswd -r ldap -sa\n"); 1775 MSG("\tpasswd -r ldap -s [name]\n"); 1776 MSG("\tpasswd -r ldap [-l|-N|-u] [-f] [-n min] [-w warn] " 1777 "[-x max] name\n"); 1778 #undef MSG 1779 } 1780