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_NO_PROBLEMO) { \
 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_NO_PROBLEMO) { \
 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
 295         if (result == NT_STATUS_USER_EXISTS) {
 296                 uint32 num_rids, *name_types, *user_rids;
 297                 uint32 flags = 0x3e8;
 298                 char *names;
 299
 300                 /* Look up existing rid */
 301
 302                 names = (char *)&acct_name[0];
 303
 304                 CHECK_RPC_ERR_DEBUG(
 305                         cli_samr_lookup_names(&cli, mem_ctx,
 306                                               &domain_pol, flags,
 307                                               1, &names, &num_rids,
 308                                               &user_rids, &name_types),
 309                         ("error looking up rid for user %s: %s\n",
 310                          acct_name, get_nt_error_msg(result)));
 311
 312                 if (name_types[0] != SID_NAME_USER) {
 313                         DEBUG(0, ("%s is not a user account\n", acct_name));
 314                         goto done;
 315                 }
 316
 317                 user_rid = user_rids[0];
 318
 319                 /* Open handle on user */
 320
 321                 CHECK_RPC_ERR_DEBUG(
 322                         cli_samr_open_user(&cli, mem_ctx, &domain_pol,
 323                                            SEC_RIGHTS_MAXIMUM_ALLOWED,
 324                                            user_rid, &user_pol),
 325                         ("could not re-open existing user %s: %s\n",
 326                          acct_name, get_nt_error_msg(result)));
 327
 328         } else if (result != NT_STATUS_NOPROBLEMO) {
 329                 DEBUG(0, ("error creating domain user: %s\n",
 330                           get_nt_error_msg(result)));
 331                 goto done;
 332         }
 333
 334         /* Create a random machine account password */
 335
 336         {
 337                 UNISTR2 upw;    /* Unicode password */
 338
 339                 upw.buffer = (uint16 *)talloc_zero(mem_ctx, 0xc *
 340                                                    sizeof(uint16));
 341
 342                 upw.uni_str_len = 0xc;
 343                 upw.uni_max_len = 0xc;
 344
 345                 machine_pwd = (char *)upw.buffer;
 346                 plen = upw.uni_str_len * 2;
 347                 generate_random_buffer(machine_pwd, plen, True);
 348
 349                 encode_pw_buffer(pwbuf, machine_pwd, plen, False);
 350
 351                 nt_owf_genW(&upw, ntpw);
 352         }
 353
 354         /* Set password on machine account */
 355
 356         ZERO_STRUCT(ctr);
 357         ZERO_STRUCT(p24);
 358
 359         init_sam_user_info24(&p24, pwbuf);
 360
 361         ctr.switch_value = 24;
 362         ctr.info.id24 = &p24;
 363
 364         /* I don't think this is quite the right place for this
 365            calculation.  It should be moved somewhere where the credentials
 366            are calculated. )-: */
 367
 368         mdfour(sess_key, cli.pwd.smb_nt_pwd, 16);
 369
 370         CHECK_RPC_ERR(cli_samr_set_userinfo(&cli, mem_ctx, &user_pol, 24,
 371                                             sess_key, &ctr),
 372                       "error setting trust account password");
 373
 374         /* Why do we have to try to (re-)set the ACB to be the same as what
 375            we passed in the samr_create_dom_user() call?  When a NT
 376            workstation is joined to a domain by an administrator the
 377            acb_info is set to 0x80.  For a normal user with "Add
 378            workstations to the domain" rights the acb_info is 0x84.  I'm
 379            not sure whether it is supposed to make a difference or not.  NT
 380            seems to cope with either value so don't bomb out if the set
 381            userinfo2 level 0x10 fails.  -tpot */
 382
 383         ctr.switch_value = 0x10;
 384         ctr.info.id10 = &p10;
 385
 386         init_sam_user_info10(&p10, ACB_WSTRUST);
 387
 388         /* Ignoring the return value is necessary for joining a domain
 389            as a normal user with "Add workstation to domain" privilege. */
 390
 391         result = cli_samr_set_userinfo2(&cli, mem_ctx, &user_pol, 0x10,
 392                                         sess_key, &ctr);
 393
 394         /* Now store the secret in the secrets database */
 395
 396         strupper(domain);
 397
 398         if (!secrets_store_domain_sid(domain, &domain_sid) ||
 399             !secrets_store_trust_account_password(domain, ntpw)) {
 400                 DEBUG(0, ("error storing domain secrets\n"));
 401                 goto done;
 402         }
 403
 404         retval = 0;             /* Success! */
 405
 406  done:
 407         /* Close down pipe - this will clean up open policy handles */
 408
 409         if (cli.nt_pipe_fnum)
 410                 cli_nt_session_close(&cli);
 411
 412         /* Display success or failure */
 413
 414         if (retval != 0) {
 415                 trust_password_delete(domain);
 416                 fprintf(stderr,"Unable to join domain %s.\n",domain);
 417         } else {
 418                 printf("Joined domain %s.\n",domain);
 419         }
 420
 421         return retval;
 422 }
 423
 424 static void set_line_buffering(FILE *f)
 425 {
 426         setvbuf(f, NULL, _IOLBF, 0);
 427 }
 428
 429 /*************************************************************
 430  Utility function to prompt for passwords from stdin. Each
 431  password entered must end with a newline.
 432 *************************************************************/
 433 static char *stdin_new_passwd(void)
 434 {
 435         static fstring new_passwd;
 436         size_t len;
 437
 438         ZERO_ARRAY(new_passwd);
 439
 440         /*
 441          * if no error is reported from fgets() and string at least contains
 442          * the newline that ends the password, then replace the newline with
 443          * a null terminator.
 444          */
 445         if ( fgets(new_passwd, sizeof(new_passwd), stdin) != NULL) {
 446                 if ((len = strlen(new_passwd)) > 0) {
 447                         if(new_passwd[len-1] == '\n')
 448                                 new_passwd[len - 1] = 0;
 449                 }
 450         }
 451         return(new_passwd);
 452 }
 453
 454
 455 /*************************************************************
 456  Utility function to get passwords via tty or stdin
 457  Used if the '-s' option is set to silently get passwords
 458  to enable scripting.
 459 *************************************************************/
 460 static char *get_pass( char *prompt, BOOL stdin_get)
 461 {
 462         char *p;
 463         if (stdin_get) {
 464                 p = stdin_new_passwd();
 465         } else {
 466                 p = getpass(prompt);
 467         }
 468         return xstrdup(p);
 469 }
 470
 471 /*************************************************************
 472  Utility function to prompt for new password.
 473 *************************************************************/
 474 static char *prompt_for_new_password(BOOL stdin_get)
 475 {
 476         char *p;
 477         fstring new_passwd;
 478
 479         ZERO_ARRAY(new_passwd);
 480
 481         p = get_pass("New SMB password:", stdin_get);
 482
 483         fstrcpy(new_passwd, p);
 484         safe_free(p);
 485
 486         p = get_pass("Retype new SMB password:", stdin_get);
 487
 488         if (strcmp(p, new_passwd)) {
 489                 fprintf(stderr, "Mismatch - password unchanged.\n");
 490                 ZERO_ARRAY(new_passwd);
 491                 safe_free(p);
 492                 return NULL;
 493         }
 494
 495         return p;
 496 }
 497
 498
 499 /*************************************************************
 500  Change a password either locally or remotely.
 501 *************************************************************/
 502
 503 static BOOL password_change(const char *remote_machine, char *user_name,
 504                             char *old_passwd, char *new_passwd, int local_flags)
 505 {
 506         BOOL ret;
 507         pstring err_str;
 508         pstring msg_str;
 509
 510         if (remote_machine != NULL) {
 511                 if (local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|
 512                                                         LOCAL_TRUST_ACCOUNT|LOCAL_SET_NO_PASSWORD)) {
 513                         /* these things can't be done remotely yet */
 514                         return False;
 515                 }
 516                 ret = remote_password_change(remote_machine, user_name,
 517                                                                          old_passwd, new_passwd, err_str, sizeof(err_str));
 518                 if(*err_str)
 519                         fprintf(stderr, err_str);
 520                 return ret;
 521         }
 522
 523         ret = local_password_change(user_name, local_flags, new_passwd,
 524                                      err_str, sizeof(err_str), msg_str, sizeof(msg_str));
 525
 526         if(*msg_str)
 527                 printf(msg_str);
 528         if(*err_str)
 529                 fprintf(stderr, err_str);
 530
 531         return ret;
 532 }
 533
 534
 535 /*************************************************************
 536  Handle password changing for root.
 537 *************************************************************/
 538
 539 static int process_root(int argc, char *argv[])
 540 {
 541         struct passwd  *pwd;
 542         int result = 0, ch;
 543         BOOL joining_domain = False, got_pass = False;
 544         int local_flags = 0;
 545         BOOL stdin_passwd_get = False;
 546         fstring user_name, user_password;
 547         char *new_domain = NULL;
 548         char *new_passwd = NULL;
 549         char *old_passwd = NULL;
 550         char *remote_machine = NULL;
 551
 552         while ((ch = getopt(argc, argv, "ax:d:e:mnj:r:sR:D:U:L")) != EOF) {
 553                 switch(ch) {
 554                 case 'L':
 555                         local_mode = True;
 556                         break;
 557                 case 'a':
 558                         local_flags |= LOCAL_ADD_USER;
 559                         break;
 560                 case 'x':
 561                         local_flags |= LOCAL_DELETE_USER;
 562                         fstrcpy(user_name, optarg);
 563                         new_passwd = xstrdup("XXXXXX");
 564                         break;
 565                 case 'd':
 566                         local_flags |= LOCAL_DISABLE_USER;
 567                         fstrcpy(user_name, optarg);
 568                         new_passwd = xstrdup("XXXXXX");
 569                         break;
 570                 case 'e':
 571                         local_flags |= LOCAL_ENABLE_USER;
 572                         fstrcpy(user_name, optarg);
 573                         break;
 574                 case 'm':
 575                         local_flags |= LOCAL_TRUST_ACCOUNT;
 576                         break;
 577                 case 'n':
 578                         local_flags |= LOCAL_SET_NO_PASSWORD;
 579                         new_passwd = xstrdup("NO PASSWORD");
 580                         break;
 581                 case 'j':
 582                         new_domain = optarg;
 583                         strupper(new_domain);
 584                         joining_domain = True;
 585                         break;
 586                 case 'r':
 587                         remote_machine = optarg;
 588                         break;
 589                 case 's':
 590                         set_line_buffering(stdin);
 591                         set_line_buffering(stdout);
 592                         set_line_buffering(stderr);
 593                         stdin_passwd_get = True;
 594                         break;
 595                 case 'R':
 596                         lp_set_name_resolve_order(optarg);
 597                         break;
 598                 case 'D':
 599                         DEBUGLEVEL = atoi(optarg);
 600                         break;
 601                 case 'U': {
 602                         char *lp;
 603
 604                         fstrcpy(user_name, optarg);
 605
 606                         if ((lp = strchr_m(user_name, '%'))) {
 607                                 *lp = 0;
 608                                 fstrcpy(user_password, lp + 1);
 609                                 got_pass = True;
 610                                 memset(strchr_m(optarg, '%') + 1, 'X',
 611                                        strlen(user_password));
 612                         }
 613
 614                         break;
 615                 }
 616                 default:
 617                         usage();
 618                 }
 619         }
 620
 621         argc -= optind;
 622         argv += optind;
 623
 624         /*
 625          * Ensure both add/delete user are not set
 626          * Ensure add/delete user and either remote machine or join domain are
 627          * not both set.
 628          */
 629         if(((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) == (LOCAL_ADD_USER|LOCAL_DELETE_USER)) ||
 630            ((local_flags & (LOCAL_ADD_USER|LOCAL_DELETE_USER)) &&
 631                 ((remote_machine != NULL) || joining_domain))) {
 632                 usage();
 633         }
 634
 635         /* Only load interfaces if we are doing network operations. */
 636
 637         if (joining_domain || remote_machine) {
 638                 load_interfaces();
 639         }
 640
 641         /* Join a domain */
 642
 643         if (joining_domain) {
 644
 645                 if (argc != 0)
 646                         usage();
 647
 648                 /* Are we joining by specifing an admin username and
 649                    password? */
 650
 651                 if (user_name[0]) {
 652
 653                         /* Get administrator password if not specified */
 654
 655                         if (!got_pass) {
 656                                 char *pass = getpass("Password: ");
 657
 658                                 if (pass)
 659                                         pstrcpy(user_password, pass);
 660                         }
 661
 662                         return join_domain_byuser(new_domain, remote_machine,
 663                                                   user_name, user_password);
 664                 } else {
 665
 666                         /* Or just with the server manager? */
 667
 668                         return join_domain(new_domain, remote_machine);
 669                 }
 670         }
 671
 672         /*
 673          * Deal with root - can add a user, but only locally.
 674          */
 675
 676         switch(argc) {
 677         case 0:
 678                 break;
 679         case 1:
 680                 fstrcpy(user_name, argv[0]);
 681                 break;
 682         case 2:
 683                 fstrcpy(user_name, argv[0]);
 684                 new_passwd = xstrdup(argv[1]);
 685                 break;
 686         default:
 687                 usage();
 688         }
 689
 690         if (!user_name[0] && (pwd = sys_getpwuid(0))) {
 691                 fstrcpy(user_name, pwd->pw_name);
 692         }
 693
 694         if (!user_name[0]) {
 695                 fprintf(stderr,"You must specify a username\n");
 696                 exit(1);
 697         }
 698
 699         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 700                 /* add the $ automatically */
 701                 static fstring buf;
 702
 703                 /*
 704                  * Remove any trailing '$' before we
 705                  * generate the initial machine password.
 706                  */
 707
 708                 if (user_name[strlen(user_name)-1] == '$') {
 709                         user_name[strlen(user_name)-1] = 0;
 710                 }
 711
 712                 if (local_flags & LOCAL_ADD_USER) {
 713                         safe_free(new_passwd);
 714                         new_passwd = xstrdup(user_name);
 715                         strlower(new_passwd);
 716                 }
 717
 718                 /*
 719                  * Now ensure the username ends in '$' for
 720                  * the machine add.
 721                  */
 722
 723                 slprintf(buf, sizeof(buf)-1, "%s$", user_name);
 724                 fstrcpy(user_name, buf);
 725         }
 726
 727         if (remote_machine != NULL) {
 728                 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
 729         }
 730
 731         if (!new_passwd) {
 732
 733                 /*
 734                  * If we are trying to enable a user, first we need to find out
 735                  * if they are using a modern version of the smbpasswd file that
 736                  * disables a user by just writing a flag into the file. If so
 737                  * then we can re-enable a user without prompting for a new
 738                  * password. If not (ie. they have a no stored password in the
 739                  * smbpasswd file) then we need to prompt for a new password.
 740                  */
 741
 742                 if(local_flags & LOCAL_ENABLE_USER) {
 743                         SAM_ACCOUNT *sampass = NULL;
 744                         BOOL ret;
 745
 746                         pdb_init_sam(&sampass);
 747                         ret = pdb_getsampwnam(sampass, user_name);
 748                         if((sampass != False) && (pdb_get_lanman_passwd(sampass) != NULL)) {
 749                                 new_passwd = xstrdup("XXXX"); /* Don't care. */
 750                         }
 751                         pdb_free_sam(sampass);
 752                 }
 753
 754                 if(!new_passwd)
 755                         new_passwd = prompt_for_new_password(stdin_passwd_get);
 756
 757                 if(!new_passwd) {
 758                         fprintf(stderr, "Unable to get new password.\n");
 759                         exit(1);
 760                 }
 761         }
 762
 763         if (!password_change(remote_machine, user_name, old_passwd, new_passwd, local_flags)) {
 764                 fprintf(stderr,"Failed to modify password entry for user %s\n", user_name);
 765                 result = 1;
 766                 goto done;
 767         }
 768
 769         if(!(local_flags & (LOCAL_ADD_USER|LOCAL_DISABLE_USER|LOCAL_ENABLE_USER|LOCAL_DELETE_USER|LOCAL_SET_NO_PASSWORD))) {
 770                 SAM_ACCOUNT *sampass = NULL;
 771                 BOOL ret;
 772
 773                 pdb_init_sam(&sampass);
 774                 ret = pdb_getsampwnam(sampass, user_name);
 775
 776                 printf("Password changed for user %s.", user_name );
 777                 if( (ret != False) && (pdb_get_acct_ctrl(sampass)&ACB_DISABLED) )
 778                         printf(" User has disabled flag set.");
 779                 if((ret != False) && (pdb_get_acct_ctrl(sampass) & ACB_PWNOTREQ) )
 780                         printf(" User has no password flag set.");
 781                 printf("\n");
 782                 pdb_free_sam(sampass);
 783         }
 784
 785  done:
 786         safe_free(new_passwd);
 787         return result;
 788 }
 789
 790
 791 /*************************************************************
 792 handle password changing for non-root
 793 *************************************************************/
 794 static int process_nonroot(int argc, char *argv[])
 795 {
 796         struct passwd  *pwd = NULL;
 797         int result = 0, ch;
 798         BOOL stdin_passwd_get = False;
 799         char *old_passwd = NULL;
 800         char *remote_machine = NULL;
 801         char *user_name = NULL;
 802         char *new_passwd = NULL;
 803
 804         while ((ch = getopt(argc, argv, "hD:r:sU:")) != EOF) {
 805                 switch(ch) {
 806                 case 'D':
 807                         DEBUGLEVEL = atoi(optarg);
 808                         break;
 809                 case 'r':
 810                         remote_machine = optarg;
 811                         break;
 812                 case 's':
 813                         set_line_buffering(stdin);
 814                         set_line_buffering(stdout);
 815                         set_line_buffering(stderr);
 816                         stdin_passwd_get = True;
 817                         break;
 818                 case 'U':
 819                         user_name = optarg;
 820                         break;
 821                 default:
 822                         usage();
 823                 }
 824         }
 825
 826         argc -= optind;
 827         argv += optind;
 828
 829         if(argc > 1) {
 830                 usage();
 831         }
 832
 833         if (argc == 1) {
 834                 new_passwd = argv[0];
 835         }
 836
 837         if (!user_name) {
 838                 pwd = sys_getpwuid(getuid());
 839                 if (pwd) {
 840                         user_name = xstrdup(pwd->pw_name);
 841                 } else {
 842                         fprintf(stderr,"you don't exist - go away\n");
 843                         exit(1);
 844                 }
 845         }
 846
 847         /*
 848          * A non-root user is always setting a password
 849          * via a remote machine (even if that machine is
 850          * localhost).
 851          */
 852
 853         load_interfaces(); /* Delayed from main() */
 854
 855         if (remote_machine == NULL) {
 856                 remote_machine = "127.0.0.1";
 857         }
 858
 859         if (remote_machine != NULL) {
 860                 old_passwd = get_pass("Old SMB password:",stdin_passwd_get);
 861         }
 862
 863         if (!new_passwd) {
 864                 new_passwd = prompt_for_new_password(stdin_passwd_get);
 865         }
 866
 867         if (!new_passwd) {
 868                 fprintf(stderr, "Unable to get new password.\n");
 869                 exit(1);
 870         }
 871
 872         if (!password_change(remote_machine, user_name, old_passwd, new_passwd, 0)) {
 873                 fprintf(stderr,"Failed to change password for %s\n", user_name);
 874                 result = 1;
 875                 goto done;
 876         }
 877
 878         printf("Password changed for user %s\n", user_name);
 879
 880  done:
 881         safe_free(old_passwd);
 882         safe_free(new_passwd);
 883
 884         return result;
 885 }
 886
 887
 888
 889 /*********************************************************
 890  Start here.
 891 **********************************************************/
 892 int main(int argc, char **argv)
 893 {
 894         static pstring servicesf = CONFIGFILE;
 895
 896 #if defined(HAVE_SET_AUTH_PARAMETERS)
 897         set_auth_parameters(argc, argv);
 898 #endif /* HAVE_SET_AUTH_PARAMETERS */
 899
 900         TimeInit();
 901
 902         setup_logging("smbpasswd", True);
 903
 904         if(!initialize_password_db(True)) {
 905                 fprintf(stderr, "Can't setup password database vectors.\n");
 906                 exit(1);
 907         }
 908
 909         if (!lp_load(servicesf,True,False,False)) {
 910                 fprintf(stderr, "Can't load %s - run testparm to debug it\n",
 911                         servicesf);
 912                 exit(1);
 913         }
 914
 915         /*
 916          * Set the machine NETBIOS name if not already
 917          * set from the config file.
 918          */
 919
 920         if (!*global_myname) {
 921                 char *p;
 922                 fstrcpy(global_myname, myhostname());
 923                 p = strchr_m(global_myname, '.' );
 924                 if (p) *p = 0;
 925         }
 926         strupper(global_myname);
 927
 928         secrets_init();
 929
 930         /* Check the effective uid - make sure we are not setuid */
 931         if ((geteuid() == (uid_t)0) && (getuid() != (uid_t)0)) {
 932                 fprintf(stderr, "smbpasswd must *NOT* be setuid root.\n");
 933                 exit(1);
 934         }
 935
 936         /* pre-check for local mode option as first option. We can't
 937            do this via normal getopt as getopt can't be called
 938            twice. */
 939         if (argc > 1 && strcmp(argv[1], "-L") == 0) {
 940                 local_mode = True;
 941         }
 942
 943         if (local_mode || getuid() == 0) {
 944                 return process_root(argc, argv);
 945         }
 946
 947         return process_nonroot(argc, argv);
 948 }