source3/utils/smbpasswd.c

   1 /*
   2  * Unix SMB/Netbios implementation.
   3  * Version 1.9.
   4  * smbpasswd module.
   5  * Copyright (C) Jeremy Allison 1995-1998
   6  * Copyright (C) Tim Potter     2001
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU General Public License as published by the
  10  * Free Software Foundation; either version 2 of the License, or (at your
  11  * option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful, but WITHOUT
  14  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  16  * more details.
  17  *
  18  * You should have received a copy of the GNU General Public License along with
  19  * this program; if not, write to the Free Software Foundation, Inc., 675
  20  * Mass Ave, Cambridge, MA 02139, USA.  */
  21
  22 #include "includes.h"
  23
  24 extern pstring global_myname;
  25 extern int DEBUGLEVEL;
  26
  27 /*
  28  * Next two lines needed for SunOS and don't
  29  * hurt anything else...
  30  */
  31 extern char *optarg;
  32 extern int optind;
  33
  34 /* forced running in root-mode */
  35 static BOOL local_mode;
  36
  37 /*********************************************************
  38 a strdup with exit
  39 **********************************************************/
  40 static char *xstrdup(char *s)
  41 {
  42         s = strdup(s);
  43         if (!s) {
  44                 fprintf(stderr,"out of memory\n");
  45                 exit(1);
  46         }
  47         return s;
  48 }
  49
  50
  51 /*********************************************************
  52  Print command usage on stderr and die.
  53 **********************************************************/
  54 static void usage(void)
  55 {
  56         if (getuid() == 0) {
  57                 printf("smbpasswd [options] [username] [password]\n");
  58         } else {
  59                 printf("smbpasswd [options] [password]\n");
  60         }
  61         printf("options:\n");
  62         printf("  -s                   use stdin for password prompt\n");
  63         printf("  -D LEVEL             debug level\n");
  64         printf("  -U USER              remote username\n");
  65         printf("  -r MACHINE           remote machine\n");
  66
  67         if (getuid() == 0 || local_mode) {
  68                 printf("  -L                   local mode (must be first option)\n");
  69                 printf("  -R ORDER             name resolve order\n");
  70                 printf("  -j DOMAIN            join domain name\n");
  71                 printf("  -a                   add user\n");
  72                 printf("  -x                   delete user\n");
  73                 printf("  -d                   disable user\n");
  74                 printf("  -e                   enable user\n");
  75                 printf("  -n                   set no password\n");
  76                 printf("  -m                   machine trust account\n");
  77         }
  78         exit(1);
  79 }
  80
  81 /*********************************************************
  82 Join a domain.
  83 **********************************************************/
  84 static int join_domain(char *domain, char *remote)
  85 {
  86         pstring remote_machine;
  87         fstring trust_passwd;
  88         unsigned char orig_trust_passwd_hash[16];
  89         BOOL ret;
  90
  91         pstrcpy(remote_machine, remote ? remote : "");
  92         fstrcpy(trust_passwd, global_myname);
  93         strlower(trust_passwd);
  94         E_md4hash( (uchar *)trust_passwd, orig_trust_passwd_hash);
  95
  96         /* Ensure that we are not trying to join a
  97            domain if we are locally set up as a domain
  98            controller. */
  99
 100         if(strequal(remote, global_myname)) {
 101                 fprintf(stderr, "Cannot join domain %s as the domain controller name is our own. We cannot be a domain controller for a domain and also be a domain member.\n", domain);
 102                 return 1;
 103         }
 104
 105         /*
 106          * Write the old machine account password.
 107          */
 108
 109         if(!secrets_store_trust_account_password(domain,  orig_trust_passwd_hash)) {
 110                 fprintf(stderr, "Unable to write the machine account password for \
 111 machine %s in domain %s.\n", global_myname, domain);
 112                 return 1;
 113         }
 114
 115         /*
 116          * If we are given a remote machine assume this is the PDC.
 117          */
 118
 119         if(remote == NULL) {
 120                 pstrcpy(remote_machine, lp_passwordserver());
 121         }
 122
 123         if(!*remote_machine) {
 124                 fprintf(stderr, "No password server list given in smb.conf - \
 125 unable to join domain.\n");
 126                 return 1;
 127         }
 128
 129         ret = change_trust_account_password( domain, remote_machine);
 130
 131         if(!ret) {
 132                 trust_password_delete(domain);
 133                 fprintf(stderr,"Unable to join domain %s.\n",domain);
 134         } else {
 135                 printf("Joined domain %s.\n",domain);
 136         }
 137
 138         return (int)ret;
 139 }
 140
 141 /* Initialise client credentials for authenticated pipe access */
 142
 143 void init_rpcclient_creds(struct ntuser_creds *creds, char* username,
 144                           char* domain, char* password)
 145 {
 146         ZERO_STRUCTP(creds);
 147
 148         if (lp_encrypted_passwords()) {
 149                 pwd_make_lm_nt_16(&creds->pwd, password);
 150         } else {
 151                 pwd_set_cleartext(&creds->pwd, password);
 152         }
 153
 154         fstrcpy(creds->user_name, username);
 155         fstrcpy(creds->domain, domain);
 156 }
 157
 158 /*********************************************************
 159 Join a domain using the administrator username and password
 160 **********************************************************/
 161
 162 /* Macro for checking RPC error codes to make things more readable */
 163
 164 #define CHECK_RPC_ERR(rpc, msg) \
 165         if ((result = rpc) != NT_STATUS_NOPROBLEMO) { \
 166                 DEBUG(0, (msg ": %s\n", get_nt_error_msg(result))); \
 167                 goto done; \
 168         }
 169
 170 #define CHECK_RPC_ERR_DEBUG(rpc, debug_args) \
 171         if ((result = rpc) != NT_STATUS_NOPROBLEMO) { \
 172                 DEBUG(0, debug_args); \
 173                 goto done; \
 174         }
 175
 176 static int join_domain_byuser(char *domain, char *remote_machine,
 177                               char *username, char *password)
 178 {
 179         /* libsmb variables */
 180
 181         struct nmb_name calling, called;
 182         struct ntuser_creds creds;
 183         struct cli_state cli;
 184         fstring dest_host, acct_name;
 185         struct in_addr dest_ip;
 186         TALLOC_CTX *mem_ctx;
 187
 188         /* rpc variables */
 189
 190         POLICY_HND lsa_pol, sam_pol, domain_pol, user_pol;
 191         DOM_SID domain_sid;
 192         uint32 user_rid;
 193
 194         /* Password stuff */
 195
 196         char *machine_pwd;
 197         int plen = 0;
 198         uchar pwbuf[516], ntpw[16], sess_key[16];
 199         SAM_USERINFO_CTR ctr;
 200         SAM_USER_INFO_24 p24;
 201         SAM_USER_INFO_10 p10;
 202
 203         /* Misc */
 204
 205         uint32 result;
 206         int retval = 1;
 207
 208         /* Connect to remote machine */
 209
 210         ZERO_STRUCT(cli);
 211         ZERO_STRUCT(creds);
 212
 213         if (!(mem_ctx = talloc_init())) {
 214                 DEBUG(0, ("Could not initialise talloc context\n"));
 215                 goto done;
 216         }
 217
 218         if (!cli_initialise(&cli)) {
 219                 DEBUG(0, ("Could not initialise client structure\n"));
 220                 goto done;
 221         }
 222
 223         init_rpcclient_creds(&creds, username, domain, password);
 224         cli_init_creds(&cli, &creds);
 225
 226         if (!resolve_srv_name(remote_machine, dest_host, &dest_ip)) {
 227                 DEBUG(0, ("Could not resolve name %s\n", remote_machine));
 228                 goto done;
 229         }
 230
 231         make_nmb_name(&called, dns_to_netbios_name(dest_host), 0x20);
 232         make_nmb_name(&calling, dns_to_netbios_name(global_myname), 0);
 233
 234         if (!cli_establish_connection(&cli, dest_host, &dest_ip, &calling,
 235                                       &called, "IPC$", "IPC", False, True)) {
 236                 DEBUG(0, ("Error connecting to %s\n", dest_host));
 237                 goto done;
 238         }
 239
 240         /* Fetch domain sid */
 241
 242         if (!cli_nt_session_open(&cli, PIPE_LSARPC)) {
 243                 DEBUG(0, ("Error connecting to SAM pipe\n"));
 244                 goto done;
 245         }
 246
 247
 248         CHECK_RPC_ERR(cli_lsa_open_policy(&cli, mem_ctx, True,
 249                                           SEC_RIGHTS_MAXIMUM_ALLOWED,
 250                                           &lsa_pol),
 251                       "error opening lsa policy handle");
 252
 253         CHECK_RPC_ERR(cli_lsa_query_info_policy(&cli, mem_ctx, &lsa_pol,
 254                                                 5, domain, &domain_sid),
 255                       "error querying info policy");
 256
 257         cli_lsa_close(&cli, mem_ctx, &lsa_pol);
 258
 259         cli_nt_session_close(&cli); /* Done with this pipe */
 260
 261         /* Create domain user */
 262
 263         if (!cli_nt_session_open(&cli, PIPE_SAMR)) {
 264                 DEBUG(0, ("Error connecting to SAM pipe\n"));
 265                 goto done;
 266         }
 267
 268         CHECK_RPC_ERR(cli_samr_connect(&cli, mem_ctx,
 269                                        SEC_RIGHTS_MAXIMUM_ALLOWED,
 270                                        &sam_pol),
 271                       "could not connect to SAM database");
 272
 273
 274         CHECK_RPC_ERR(cli_samr_open_domain(&cli, mem_ctx, &sam_pol,
 275                                            SEC_RIGHTS_MAXIMUM_ALLOWED,
 276                                            &domain_sid, &domain_pol),
 277                       "could not open domain");
 278
 279         /* Create domain user */
 280
 281         fstrcpy(acct_name, global_myname);
 282         fstrcat(acct_name, "$");
 283
 284         strlower(acct_name);
 285
 286         {
 287                 uint32 unknown = 0xe005000b;
 288
 289                 result = cli_samr_create_dom_user(&cli, mem_ctx, &domain_pol,
 290                                                   acct_name, ACB_WSTRUST,
 291                                                   unknown, &user_pol,
 292                                                   &user_rid);
 293
 294                 /* We *must* do this.... don't ask... */
 295
 296                 CHECK_RPC_ERR_DEBUG(cli_samr_close(&cli, mem_ctx, &user_pol), ("error closing user policy"));
 297                 result = NT_STATUS_USER_EXISTS;
 298         }
 299
 300         if (result == NT_STATUS_USER_EXISTS) {
 301                 uint32 num_rids, *name_types, *user_rids;
 302                 uint32 flags = 0x3e8;
 303                 char *names;
 304
 305                 /* Look up existing rid */
 306
 307                 names = (char *)&acct_name[0];
 308
 309                 CHECK_RPC_ERR_DEBUG(
 310                         cli_samr_lookup_names(&cli, mem_ctx,
 311                                               &domain_pol, flags,
 312                                               1, &names, &num_rids,
 313                                               &user_rids, &name_types),
 314                         ("error looking up rid for user %s: %s\n",
 315                          acct_name, get_nt_error_msg(result)));
 316
 317                 if (name_types[0] != SID_NAME_USER) {
 318                         DEBUG(0, ("%s is not a user account\n", acct_name));
 319                         goto done;
 320                 }
 321
 322                 user_rid = user_rids[0];
 323
 324                 /* Open handle on user */
 325
 326                 CHECK_RPC_ERR_DEBUG(
 327                         cli_samr_open_user(&cli, mem_ctx, &domain_pol,
 328                                            SEC_RIGHTS_MAXIMUM_ALLOWED,
 329                                            user_rid, &user_pol),
 330                         ("could not re-open existing user %s: %s\n",
 331                          acct_name, get_nt_error_msg(result)));
 332
 333         } else if (result != NT_STATUS_NOPROBLEMO) {
 334                 DEBUG(0, ("error creating domain user: %s\n",
 335                           get_nt_error_msg(result)));
 336                 goto done;
 337         }
 338
 339         /* Create a random machine account password */
 340
 341         {
 342                 UNISTR2 upw;    /* Unicode password */
 343
 344                 upw.buffer = (uint16 *)talloc_zero(mem_ctx, 0xc *
 345                                                    sizeof(uint16));
 346
 347                 upw.uni_str_len = 0xc;
 348                 upw.uni_max_len = 0xc;
 349
 350                 machine_pwd = (char *)upw.buffer;
 351                 plen = upw.uni_str_len * 2;
 352                 generate_random_buffer(machine_pwd, plen, True);
 353
 354                 encode_pw_buffer(pwbuf, machine_pwd, plen, False);
 355
 356                 nt_owf_genW(&upw, ntpw);
 357         }
 358
 359         /* Set password on machine account */
 360
 361         ZERO_STRUCT(ctr);
 362         ZERO_STRUCT(p24);
 363
 364         init_sam_user_info24(&p24, pwbuf,24);
 365
 366         ctr.switch_value = 24;
 367         ctr.info.id24 = &p24;
 368
 369         /* I don't think this is quite the right place for this
 370            calculation.  It should be moved somewhere where the credentials
 371            are calculated. )-: */
 372
 373         mdfour(sess_key, cli.pwd.smb_nt_pwd, 16);
 374
 375         CHECK_RPC_ERR(cli_samr_set_userinfo(&cli, mem_ctx, &user_pol, 24,
 376                                             sess_key, &ctr),
 377                       "error setting trust account password");
 378
 379         /* Why do we have to try to (re-)set the ACB to be the same as what
 380            we passed in the samr_create_dom_user() call?  When a NT
 381            workstation is joined to a domain by an administrator the
 382            acb_info is set to 0x80.  For a normal user with "Add
 383            workstations to the domain" rights the acb_info is 0x84.  I'm
 384            not sure whether it is supposed to make a difference or not.  NT
 385            seems to cope with either value so don't bomb out if the set
 386            userinfo2 level 0x10 fails.  -tpot */
 387
 388         ZERO_STRUCT(ctr);
 389         ctr.switch_value = 0x10;
 390         ctr.info.id10 = &p10;
 391
 392         init_sam_user_info10(&p10, ACB_WSTRUST);
 393
 394         /* Ignoring the return value is necessary for joining a domain
 395            as a normal user with "Add workstation to domain" privilege. */
 396
 397         result = cli_samr_set_userinfo2(&cli, mem_ctx, &user_pol, 0x10,
 398                                         sess_key, &ctr);
 399
 400         /* Now store the secret in the secrets database */
 401
 402         strupper(domain);
 403
 404         if (!secrets_store_domain_sid(domain, &domain_sid) ||
 405             !secrets_store_trust_account_password(domain, ntpw)) {
 406                 DEBUG(0, ("error storing domain secrets\n"));
 407                 goto done;
 408         }
 409
 410         retval = 0;             /* Success! */
 411
 412  done:
 413         /* Close down pipe - this will clean up open policy handles */
 414
 415         if (cli.nt_pipe_fnum)
 416                 cli_nt_session_close(&cli);
 417
 418         /* Display success or failure */
 419
 420         if (retval != 0) {
 421                 trust_password_delete(domain);
 422                 fprintf(stderr,"Unable to join domain %s.\n",domain);
 423         } else {
 424                 printf("Joined domain %s.\n",domain);
 425         }
 426
 427         return retval;
 428 }
 429
 430 static void set_line_buffering(FILE *f)
 431 {
 432         setvbuf(f, NULL, _IOLBF, 0);
 433 }
 434
 435 /*************************************************************
 436  Utility function to prompt for passwords from stdin. Each
 437  password entered must end with a newline.
 438 *************************************************************/
 439 static char *stdin_new_passwd(void)
 440 {
 441         static fstring new_passwd;
 442         size_t len;
 443
 444         ZERO_ARRAY(new_passwd);
 445
 446         /*
 447          * if no error is reported from fgets() and string at least contains
 448          * the newline that ends the password, then replace the newline with
 449          * a null terminator.
 450          */
 451         if ( fgets(new_passwd, sizeof(new_passwd), stdin) != NULL) {
 452                 if ((len = strlen(new_passwd)) > 0) {
 453                         if(new_passwd[len-1] == '\n')
 454                                 new_passwd[len - 1] = 0;
 455                 }
 456         }
 457         return(new_passwd);
 458 }
 459
 460
 461 /*************************************************************
 462  Utility function to get passwords via tty or stdin
 463  Used if the '-s' option is set to silently get passwords
 464  to enable scripting.
 465 *************************************************************/
 466 static char *get_pass( char *prompt, BOOL stdin_get)
 467 {
 468         char *p;
 469         if (stdin_get) {
 470                 p = stdin_new_passwd();
 471         } else {
 472                 p = getpass(prompt);
 473         }
 474         return xstrdup(p);
 475 }
 476
 477 /*************************************************************
 478  Utility function to prompt for new password.
 479 *************************************************************/
 480 static char *prompt_for_new_password(BOOL stdin_get)
 481 {
 482         char *p;
 483         fstring new_passwd;
 484
 485         ZERO_ARRAY(new_passwd);
 486
 487         p = get_pass("New SMB password:", stdin_get);
 488
 489         fstrcpy(new_passwd, p);
 490         safe_free(p);
 491
 492         p = get_pass("Retype new SMB password:", stdin_get);
 493
 494         if (strcmp(p, new_passwd)) {
 495                 fprintf(stderr, "Mismatch - password unchanged.\n");
 496                 ZERO_ARRAY(new_passwd);
 497                 safe_free(p);
 498                 return NULL;
 499         }
 500
 501         return p;
 502 }
 503
 504
 505 /*************************************************************
 506  Change a password either locally or remotely.
 507 *************************************************************/
 508
 509 static BOOL password_change(const char *remote_machine, char *user_name,
 510                             char *old_passwd, char *new_passwd, int local_flags)
 511 {
 512         BOOL ret;
 513         pstring err_str;
 514         pstring msg_str;
 515
 516         if (remote_machine != NULL) {
 517                 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
 518                                                         LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
 519                         /* these things can't be done remotely yet */
 520                         return False;
 521                 }
 522                 ret = remote_password_change(remote_machine, user_name,
 523                                                                          old_passwd, new_passwd, err_str, sizeof(err_str));
 524                 if(*err_str)
 525                         fprintf(stderr, err_str);
 526                 return ret;
 527         }
 528
 529         ret = local_password_change(user_name, local_flags, new_passwd,
 530                                      err_str, sizeof(err_str), msg_str, sizeof(msg_str));
 531
 532         if(*msg_str)
 533                 printf(msg_str);
 534         if(*err_str)
 535                 fprintf(stderr, err_str);
 536
 537         return ret;
 538 }
 539
 540
 541 /*************************************************************
 542  Handle password changing for root.
 543 *************************************************************/
 544
 545 static int process_root(int argc, char *argv[])
 546 {
 547         struct passwd  *pwd;
 548         int result = 0, ch;
 549         BOOL joining_domain = False, got_pass = False;
 550         int local_flags = 0;
 551         BOOL stdin_passwd_get = False;
 552         fstring user_name, user_password;
 553         char *new_domain = NULL;
 554         char *new_passwd = NULL;
 555         char *old_passwd = NULL;
 556         char *remote_machine = NULL;
 557
 558         while ((ch = getopt(argc, argv, "ax:d:e:hmnj:r:sR:D:U:L")) != EOF) {
 559                 switch(ch) {
 560                 case 'L':
 561                         local_mode = True;
 562                         break;
 563                 case 'a':
 564                         local_flags |= LOCAL_ADD_USER;
 565                         break;
 566                 case 'x':
 567                         local_flags |= LOCAL_DELETE_USER;
 568                         fstrcpy(user_name, optarg);
 569                         new_passwd = xstrdup("XXXXXX");
 570                         break;
 571                 case 'd':
 572                         local_flags |= LOCAL_DISABLE_USER;
 573                         fstrcpy(user_name, optarg);
 574                         new_passwd = xstrdup("XXXXXX");
 575                         break;
 576                 case 'e':
 577                         local_flags |= LOCAL_ENABLE_USER;
 578                         fstrcpy(user_name, optarg);
 579                         break;
 580                 case 'm':
 581                         local_flags |= LOCAL_TRUST_ACCOUNT;
 582                         break;
 583                 case 'n':
 584                         local_flags |= LOCAL_SET_NO_PASSWORD;
 585                         new_passwd = xstrdup("NO PASSWORD");
 586                         break;
 587                 case 'j':
 588                         new_domain = optarg;
 589                         strupper(new_domain);
 590                         joining_domain = True;
 591                         break;
 592                 case 'r':
 593                         remote_machine = optarg;
 594                         break;
 595                 case 's':
 596                         set_line_buffering(stdin);
 597                         set_line_buffering(stdout);
 598                         set_line_buffering(stderr);
 599                         stdin_passwd_get = True;
 600                         break;
 601                 case 'R':
 602                         lp_set_name_resolve_order(optarg);
 603                         break;
 604                 case 'D':
 605                         DEBUGLEVEL = atoi(optarg);
 606                         break;
 607                 case 'U': {
 608                         char *lp;
 609
 610                         fstrcpy(user_name, optarg);
 611
 612                         if ((lp = strchr_m(user_name, '%'))) {
 613                                 *lp = 0;
 614                                 fstrcpy(user_password, lp + 1);
 615                                 got_pass = True;
 616                                 memset(strchr_m(optarg, '%') + 1, 'X',
 617                                        strlen(user_password));
 618                         }
 619
 620                         break;
 621                 }
 622                 case 'h':
 623                 default:
 624                         usage();
 625                 }
 626         }
 627
 628         argc -= optind;
 629         argv += optind;
 630
 631         /*
 632          * Ensure both add/delete user are not set
 633          * Ensure add/delete user and either remote machine or join domain are
 634          * not both set.
 635          */
 636         if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
 637            ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
 638                 ((remote_machine != NULL) || joining_domain))) {
 639                 usage();
 640         }
 641
 642         /* Only load interfaces if we are doing network operations. */
 643
 644         if (joining_domain || remote_machine) {
 645                 load_interfaces();
 646         }
 647
 648         /* Join a domain */
 649
 650         if (joining_domain) {
 651
 652                 if (argc != 0)
 653                         usage();
 654
 655                 /* Are we joining by specifing an admin username and
 656                    password? */
 657
 658                 if (user_name[0]) {
 659
 660                         /* Get administrator password if not specified */
 661
 662                         if (!got_pass) {
 663                                 char *pass = getpass("Password: ");
 664
 665                                 if (pass)
 666                                         pstrcpy(user_password, pass);
 667                         }
 668
 669                         return join_domain_byuser(new_domain, remote_machine,
 670                                                   user_name, user_password);
 671                 } else {
 672
 673                         /* Or just with the server manager? */
 674
 675                         return join_domain(new_domain, remote_machine);
 676                 }
 677         }
 678
 679         /*
 680          * Deal with root - can add a user, but only locally.
 681          */
 682
 683         switch(argc) {
 684         case 0:
 685                 break;
 686         case 1:
 687                 fstrcpy(user_name, argv[0]);
 688                 break;
 689         case 2:
 690                 fstrcpy(user_name, argv[0]);
 691                 new_passwd = xstrdup(argv[1]);
 692                 break;
 693         default:
 694                 usage();
 695         }
 696
 697         if (!user_name[0] && (pwd = sys_getpwuid(0))) {
 698                 fstrcpy(user_name, pwd->pw_name);
 699         }
 700
 701         if (!user_name[0]) {
 702                 fprintf(stderr,"You must specify a username\n");
 703                 exit(1);
 704         }
 705
 706         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 707                 /* add the $ automatically */
 708                 static fstring buf;
 709
 710                 /*
 711                  * Remove any trailing '$' before we
 712                  * generate the initial machine password.
 713                  */
 714
 715                 if (user_name[strlen(user_name)-1] == '$') {
 716                         user_name[strlen(user_name)-1] = 0;
 717                 }
 718
 719                 if (local_flags & LOCAL_ADD_USER) {
 720                         safe_free(new_passwd);
 721                         new_passwd = xstrdup(user_name);
 722                         strlower(new_passwd);
 723                 }
 724
 725                 /*
 726                  * Now ensure the username ends in '$' for
 727                  * the machine add.
 728                  */
 729
 730                 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
 731                 fstrcpy(user_name, buf);
 732         }
 733
 734         if (remote_machine != NULL) {
 735                 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
 736         }
 737
 738         if (!new_passwd) {
 739
 740                 /*
 741                  * If we are trying to enable a user, first we need to find out
 742                  * if they are using a modern version of the smbpasswd file that
 743                  * disables a user by just writing a flag into the file. If so
 744                  * then we can re-enable a user without prompting for a new
 745                  * password. If not (ie. they have a no stored password in the
 746                  * smbpasswd file) then we need to prompt for a new password.
 747                  */
 748
 749                 if(local_flags & LOCAL_ENABLE_USER) {
 750                         SAM_ACCOUNT *sampass = NULL;
 751                         BOOL ret;
 752
 753                         pdb_init_sam(&sampass);
 754                         ret = pdb_getsampwnam(sampass, user_name);
 755                         if((sampass != False) && (pdb_get_lanman_passwd(sampass) != NULL)) {
 756                                 new_passwd = xstrdup("XXXX"); /* Don't care. */
 757                         }
 758                         pdb_free_sam(sampass);
 759                 }
 760
 761                 if(!new_passwd)
 762                         new_passwd = prompt_for_new_password(stdin_passwd_get);
 763
 764                 if(!new_passwd) {
 765                         fprintf(stderr, "Unable to get new password.\n");
 766                         exit(1);
 767                 }
 768         }
 769
 770         if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
 771                 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
 772                 result = 1;
 773                 goto done;
 774         }
 775
 776         if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD))) {
 777                 SAM_ACCOUNT *sampass = NULL;
 778                 BOOL ret;
 779
 780                 pdb_init_sam(&sampass);
 781                 ret = pdb_getsampwnam(sampass, user_name);
 782
 783                 printf("Password changed for user %s.", user_name );
 784                 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
 785                         printf(" User has disabled flag set.");
 786                 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
 787                         printf(" User has no password flag set.");
 788                 printf("\n");
 789                 pdb_free_sam(sampass);
 790         }
 791
 792  done:
 793         safe_free(new_passwd);
 794         return result;
 795 }
 796
 797
 798 /*************************************************************
 799 handle password changing for non-root
 800 *************************************************************/
 801 static int process_nonroot(int argc, char *argv[])
 802 {
 803         struct passwd  *pwd = NULL;
 804         int result = 0, ch;
 805         BOOL stdin_passwd_get = False;
 806         char *old_passwd = NULL;
 807         char *remote_machine = NULL;
 808         char *user_name = NULL;
 809         char *new_passwd = NULL;
 810
 811         while ((ch = getopt(argc, argv, "hD:r:sU:")) != EOF) {
 812                 switch(ch) {
 813                 case 'D':
 814                         DEBUGLEVEL = atoi(optarg);
 815                         break;
 816                 case 'r':
 817                         remote_machine = optarg;
 818                         break;
 819                 case 's':
 820                         set_line_buffering(stdin);
 821                         set_line_buffering(stdout);
 822                         set_line_buffering(stderr);
 823                         stdin_passwd_get = True;
 824                         break;
 825                 case 'U':
 826                         user_name = optarg;
 827                         break;
 828                 default:
 829                         usage();
 830                 }
 831         }
 832
 833         argc -= optind;
 834         argv += optind;
 835
 836         if(argc > 1) {
 837                 usage();
 838         }
 839
 840         if (argc == 1) {
 841                 new_passwd = argv[0];
 842         }
 843
 844         if (!user_name) {
 845                 pwd = sys_getpwuid(getuid());
 846                 if (pwd) {
 847                         user_name = xstrdup(pwd->pw_name);
 848                 } else {
 849                         fprintf(stderr,"you don't exist - go away\n");
 850                         exit(1);
 851                 }
 852         }
 853
 854         /*
 855          * A non-root user is always setting a password
 856          * via a remote machine (even if that machine is
 857          * localhost).
 858          */
 859
 860         load_interfaces(); /* Delayed from main() */
 861
 862         if (remote_machine == NULL) {
 863                 remote_machine = "127.0.0.1";
 864         }
 865
 866         if (remote_machine != NULL) {
 867                 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
 868         }
 869
 870         if (!new_passwd) {
 871                 new_passwd = prompt_for_new_password(stdin_passwd_get);
 872         }
 873
 874         if (!new_passwd) {
 875                 fprintf(stderr, "Unable to get new password.\n");
 876                 exit(1);
 877         }
 878
 879         if (!password_change(remote_machine, user_name, old_passwd, new_passwd, 0)) {
 880                 fprintf(stderr,"Failed to change password for %s\n", user_name);
 881                 result = 1;
 882                 goto done;
 883         }
 884
 885         printf("Password changed for user %s\n", user_name);
 886
 887  done:
 888         safe_free(old_passwd);
 889         safe_free(new_passwd);
 890
 891         return result;
 892 }
 893
 894
 895
 896 /*********************************************************
 897  Start here.
 898 **********************************************************/
 899 int main(int argc, char **argv)
 900 {
 901         static pstring servicesf = CONFIGFILE;
 902
 903 #if defined(HAVE_SET_AUTH_PARAMETERS)
 904         set_auth_parameters(argc, argv);
 905 #endif /* HAVE_SET_AUTH_PARAMETERS */
 906
 907         TimeInit();
 908
 909         setup_logging("smbpasswd", True);
 910
 911         if(!initialize_password_db(True)) {
 912                 fprintf(stderr, "Can't setup password database vectors.\n");
 913                 exit(1);
 914         }
 915
 916         if (!lp_load(servicesf,True,False,False)) {
 917                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 918                         servicesf);
 919                 exit(1);
 920         }
 921
 922         /*
 923          * Set the machine NETBIOS name if not already
 924          * set from the config file.
 925          */
 926
 927         if (!*global_myname) {
 928                 char *p;
 929                 fstrcpy(global_myname, myhostname());
 930                 p = strchr_m(global_myname, '.' );
 931                 if (p) *p = 0;
 932         }
 933         strupper(global_myname);
 934
 935         /* Check the effective uid - make sure we are not setuid */
 936         if ((geteuid() == (uid_t)0) && (getuid() != (uid_t)0)) {
 937                 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
 938                 exit(1);
 939         }
 940
 941         /* pre-check for local mode option as first option. We can't
 942            do this via normal getopt as getopt can't be called
 943            twice. */
 944         if (argc > 1 && strcmp(argv[1], "-L") == 0) {
 945                 local_mode = True;
 946         }
 947
 948         if (local_mode || getuid() == 0) {
 949                 secrets_init();
 950                 return process_root(argc, argv);
 951         }
 952
 953         return process_nonroot(argc, argv);
 954 }