source3/passdb/pdb_tdb.c

   1 /*
   2  * Unix SMB/CIFS implementation.
   3  * SMB parameters and setup
   4  * Copyright (C) Andrew Tridgell 1992-1998
   5  * Copyright (C) Simo Sorce 2000-2002
   6  * Copyright (C) Gerald Carter 2000
   7  * Copyright (C) Jeremy Allison 2001
   8  * Copyright (C) Andrew Bartlett 2002
   9  *
  10  * This program is free software; you can redistribute it and/or modify it under
  11  * the terms of the GNU General Public License as published by the Free
  12  * Software Foundation; either version 2 of the License, or (at your option)
  13  * any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful, but WITHOUT
  16  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  17  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  18  * more details.
  19  *
  20  * You should have received a copy of the GNU General Public License along with
  21  * this program; if not, write to the Free Software Foundation, Inc., 675
  22  * Mass Ave, Cambridge, MA 02139, USA.
  23  */
  24
  25 #include "includes.h"
  26
  27 #if 0 /* when made a module use this */
  28
  29 static int tdbsam_debug_level = DBGC_ALL;
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS tdbsam_debug_level
  32
  33 #else
  34
  35 #undef DBGC_CLASS
  36 #define DBGC_CLASS DBGC_PASSDB
  37
  38 #endif
  39
  40 #define PDB_VERSION             "20010830"
  41 #define PASSDB_FILE_NAME        "passdb.tdb"
  42 #define TDB_FORMAT_STRING       "ddddddBBBBBBBBBBBBddBBwdwdBdd"
  43 #define USERPREFIX              "USER_"
  44 #define RIDPREFIX               "RID_"
  45
  46 struct tdbsam_privates {
  47         TDB_CONTEXT     *passwd_tdb;
  48         TDB_DATA        key;
  49
  50         /* retrive-once info */
  51         const char *tdbsam_location;
  52
  53         BOOL permit_non_unix_accounts;
  54
  55         BOOL algorithmic_rids;
  56
  57         uint32 low_nua_rid;
  58         uint32 high_nua_rid;
  59 };
  60
  61 /**********************************************************************
  62  Intialize a SAM_ACCOUNT struct from a BYTE buffer of size len
  63  *********************************************************************/
  64
  65 static BOOL init_sam_from_buffer (struct tdbsam_privates *tdb_state,
  66                                   SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
  67 {
  68
  69         /* times are stored as 32bit integer
  70            take care on system with 64bit wide time_t
  71            --SSS */
  72         uint32  logon_time,
  73                 logoff_time,
  74                 kickoff_time,
  75                 pass_last_set_time,
  76                 pass_can_change_time,
  77                 pass_must_change_time;
  78         char *username;
  79         char *domain;
  80         char *nt_username;
  81         char *dir_drive;
  82         char *unknown_str;
  83         char *munged_dial;
  84         char *fullname;
  85         char *homedir;
  86         char *logon_script;
  87         char *profile_path;
  88         char *acct_desc;
  89         char *workstations;
  90         uint32  username_len, domain_len, nt_username_len,
  91                 dir_drive_len, unknown_str_len, munged_dial_len,
  92                 fullname_len, homedir_len, logon_script_len,
  93                 profile_path_len, acct_desc_len, workstations_len;
  94
  95         uint32  user_rid, group_rid, unknown_3, hours_len, unknown_5, unknown_6;
  96         uint16  acct_ctrl, logon_divs;
  97         uint8   *hours;
  98         static uint8    *lm_pw_ptr, *nt_pw_ptr;
  99         uint32          len = 0;
 100         uint32          lm_pw_len, nt_pw_len, hourslen;
 101         BOOL ret = True;
 102         uid_t uid = -1;
 103         gid_t gid = -1;
 104
 105         if(sampass == NULL || buf == NULL) {
 106                 DEBUG(0, ("init_sam_from_buffer: NULL parameters found!\n"));
 107                 return False;
 108         }
 109
 110         /* unpack the buffer into variables */
 111         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING,
 112                 &logon_time,
 113                 &logoff_time,
 114                 &kickoff_time,
 115                 &pass_last_set_time,
 116                 &pass_can_change_time,
 117                 &pass_must_change_time,
 118                 &username_len, &username,
 119                 &domain_len, &domain,
 120                 &nt_username_len, &nt_username,
 121                 &fullname_len, &fullname,
 122                 &homedir_len, &homedir,
 123                 &dir_drive_len, &dir_drive,
 124                 &logon_script_len, &logon_script,
 125                 &profile_path_len, &profile_path,
 126                 &acct_desc_len, &acct_desc,
 127                 &workstations_len, &workstations,
 128                 &unknown_str_len, &unknown_str,
 129                 &munged_dial_len, &munged_dial,
 130                 &user_rid,
 131                 &group_rid,
 132                 &lm_pw_len, &lm_pw_ptr,
 133                 &nt_pw_len, &nt_pw_ptr,
 134                 &acct_ctrl,
 135                 &unknown_3,
 136                 &logon_divs,
 137                 &hours_len,
 138                 &hourslen, &hours,
 139                 &unknown_5,
 140                 &unknown_6);
 141
 142         if (len == -1)  {
 143                 ret = False;
 144                 goto done;
 145         }
 146
 147         pdb_set_logon_time(sampass, logon_time, PDB_SET);
 148         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
 149         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
 150         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
 151         pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
 152         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
 153
 154         pdb_set_username     (sampass, username, PDB_SET);
 155         pdb_set_domain       (sampass, domain, PDB_SET);
 156         pdb_set_nt_username  (sampass, nt_username, PDB_SET);
 157         pdb_set_fullname     (sampass, fullname, PDB_SET);
 158
 159         if (homedir) {
 160                 pdb_set_homedir(sampass, homedir, PDB_SET);
 161         }
 162         else {
 163                 pdb_set_homedir(sampass,
 164                                 talloc_sub_specified(sampass->mem_ctx,
 165                                                        lp_logon_home(),
 166                                                        username, domain,
 167                                                        uid, gid),
 168                                 PDB_DEFAULT);
 169         }
 170
 171         if (dir_drive)
 172                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 173         else {
 174                 pdb_set_dir_drive(sampass,
 175                                   talloc_sub_specified(sampass->mem_ctx,
 176                                                          lp_logon_drive(),
 177                                                          username, domain,
 178                                                          uid, gid),
 179                                   PDB_DEFAULT);
 180         }
 181
 182         if (logon_script)
 183                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
 184         else {
 185                 pdb_set_logon_script(sampass,
 186                                      talloc_sub_specified(sampass->mem_ctx,
 187                                                             lp_logon_script(),
 188                                                             username, domain,
 189                                                             uid, gid),
 190                                   PDB_DEFAULT);
 191         }
 192
 193         if (profile_path) {
 194                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
 195         } else {
 196                 pdb_set_profile_path(sampass,
 197                                      talloc_sub_specified(sampass->mem_ctx,
 198                                                             lp_logon_path(),
 199                                                             username, domain,
 200                                                             uid, gid),
 201                                      PDB_DEFAULT);
 202         }
 203
 204         pdb_set_acct_desc    (sampass, acct_desc, PDB_SET);
 205         pdb_set_workstations (sampass, workstations, PDB_SET);
 206         pdb_set_munged_dial  (sampass, munged_dial, PDB_SET);
 207
 208         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
 209                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
 210                         ret = False;
 211                         goto done;
 212                 }
 213         }
 214
 215         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
 216                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
 217                         ret = False;
 218                         goto done;
 219                 }
 220         }
 221
 222         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
 223         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
 224         pdb_set_unknown_3(sampass, unknown_3, PDB_SET);
 225         pdb_set_hours_len(sampass, hours_len, PDB_SET);
 226         pdb_set_unknown_5(sampass, unknown_5, PDB_SET);
 227         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
 228         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
 229         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
 230         pdb_set_hours(sampass, hours, PDB_SET);
 231
 232 done:
 233
 234         SAFE_FREE(username);
 235         SAFE_FREE(domain);
 236         SAFE_FREE(nt_username);
 237         SAFE_FREE(fullname);
 238         SAFE_FREE(homedir);
 239         SAFE_FREE(dir_drive);
 240         SAFE_FREE(logon_script);
 241         SAFE_FREE(profile_path);
 242         SAFE_FREE(acct_desc);
 243         SAFE_FREE(workstations);
 244         SAFE_FREE(munged_dial);
 245         SAFE_FREE(unknown_str);
 246         SAFE_FREE(hours);
 247
 248         return ret;
 249 }
 250
 251 /**********************************************************************
 252  Intialize a BYTE buffer from a SAM_ACCOUNT struct
 253  *********************************************************************/
 254 static uint32 init_buffer_from_sam (struct tdbsam_privates *tdb_state,
 255                                     uint8 **buf, const SAM_ACCOUNT *sampass)
 256 {
 257         size_t          len, buflen;
 258
 259         /* times are stored as 32bit integer
 260            take care on system with 64bit wide time_t
 261            --SSS */
 262         uint32  logon_time,
 263                 logoff_time,
 264                 kickoff_time,
 265                 pass_last_set_time,
 266                 pass_can_change_time,
 267                 pass_must_change_time;
 268
 269         uint32  user_rid, group_rid;
 270
 271         const char *username;
 272         const char *domain;
 273         const char *nt_username;
 274         const char *dir_drive;
 275         const char *unknown_str;
 276         const char *munged_dial;
 277         const char *fullname;
 278         const char *homedir;
 279         const char *logon_script;
 280         const char *profile_path;
 281         const char *acct_desc;
 282         const char *workstations;
 283         uint32  username_len, domain_len, nt_username_len,
 284                 dir_drive_len, unknown_str_len, munged_dial_len,
 285                 fullname_len, homedir_len, logon_script_len,
 286                 profile_path_len, acct_desc_len, workstations_len;
 287
 288         const uint8 *lm_pw;
 289         const uint8 *nt_pw;
 290         uint32  lm_pw_len = 16;
 291         uint32  nt_pw_len = 16;
 292
 293         /* do we have a valid SAM_ACCOUNT pointer? */
 294         if (sampass == NULL) {
 295                 DEBUG(0, ("init_buffer_from_sam: SAM_ACCOUNT is NULL!\n"));
 296                 return -1;
 297         }
 298
 299         *buf = NULL;
 300         buflen = 0;
 301
 302         logon_time = (uint32)pdb_get_logon_time(sampass);
 303         logoff_time = (uint32)pdb_get_logoff_time(sampass);
 304         kickoff_time = (uint32)pdb_get_kickoff_time(sampass);
 305         pass_can_change_time = (uint32)pdb_get_pass_can_change_time(sampass);
 306         pass_must_change_time = (uint32)pdb_get_pass_must_change_time(sampass);
 307         pass_last_set_time = (uint32)pdb_get_pass_last_set_time(sampass);
 308
 309         user_rid = pdb_get_user_rid(sampass);
 310         group_rid = pdb_get_group_rid(sampass);
 311
 312         username = pdb_get_username(sampass);
 313         if (username) username_len = strlen(username) +1;
 314         else username_len = 0;
 315
 316         domain = pdb_get_domain(sampass);
 317         if (domain) domain_len = strlen(domain) +1;
 318         else domain_len = 0;
 319
 320         nt_username = pdb_get_nt_username(sampass);
 321         if (nt_username) nt_username_len = strlen(nt_username) +1;
 322         else nt_username_len = 0;
 323
 324         fullname = pdb_get_fullname(sampass);
 325         if (fullname) fullname_len = strlen(fullname) +1;
 326         else fullname_len = 0;
 327
 328         /*
 329          * Only updates fields which have been set (not defaults from smb.conf)
 330          */
 331
 332         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE))
 333           dir_drive = pdb_get_dir_drive(sampass);
 334         else dir_drive = NULL;
 335         if (dir_drive) dir_drive_len = strlen(dir_drive) +1;
 336         else dir_drive_len = 0;
 337
 338         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) homedir = pdb_get_homedir(sampass);
 339         else homedir = NULL;
 340         if (homedir) homedir_len = strlen(homedir) +1;
 341         else homedir_len = 0;
 342
 343         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) logon_script = pdb_get_logon_script(sampass);
 344         else logon_script = NULL;
 345         if (logon_script) logon_script_len = strlen(logon_script) +1;
 346         else logon_script_len = 0;
 347
 348         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) profile_path = pdb_get_profile_path(sampass);
 349         else profile_path = NULL;
 350         if (profile_path) profile_path_len = strlen(profile_path) +1;
 351         else profile_path_len = 0;
 352
 353         lm_pw = pdb_get_lanman_passwd(sampass);
 354         if (!lm_pw) lm_pw_len = 0;
 355
 356         nt_pw = pdb_get_nt_passwd(sampass);
 357         if (!nt_pw) nt_pw_len = 0;
 358
 359         acct_desc = pdb_get_acct_desc(sampass);
 360         if (acct_desc) acct_desc_len = strlen(acct_desc) +1;
 361         else acct_desc_len = 0;
 362
 363         workstations = pdb_get_workstations(sampass);
 364         if (workstations) workstations_len = strlen(workstations) +1;
 365         else workstations_len = 0;
 366
 367         unknown_str = NULL;
 368         unknown_str_len = 0;
 369
 370         munged_dial = pdb_get_munged_dial(sampass);
 371         if (munged_dial) munged_dial_len = strlen(munged_dial) +1;
 372         else munged_dial_len = 0;
 373
 374         /* one time to get the size needed */
 375         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING,
 376                 logon_time,
 377                 logoff_time,
 378                 kickoff_time,
 379                 pass_last_set_time,
 380                 pass_can_change_time,
 381                 pass_must_change_time,
 382                 username_len, username,
 383                 domain_len, domain,
 384                 nt_username_len, nt_username,
 385                 fullname_len, fullname,
 386                 homedir_len, homedir,
 387                 dir_drive_len, dir_drive,
 388                 logon_script_len, logon_script,
 389                 profile_path_len, profile_path,
 390                 acct_desc_len, acct_desc,
 391                 workstations_len, workstations,
 392                 unknown_str_len, unknown_str,
 393                 munged_dial_len, munged_dial,
 394                 user_rid,
 395                 group_rid,
 396                 lm_pw_len, lm_pw,
 397                 nt_pw_len, nt_pw,
 398                 pdb_get_acct_ctrl(sampass),
 399                 pdb_get_unknown_3(sampass),
 400                 pdb_get_logon_divs(sampass),
 401                 pdb_get_hours_len(sampass),
 402                 MAX_HOURS_LEN, pdb_get_hours(sampass),
 403                 pdb_get_unknown_5(sampass),
 404                 pdb_get_unknown_6(sampass));
 405
 406
 407         /* malloc the space needed */
 408         if ( (*buf=(uint8*)malloc(len)) == NULL) {
 409                 DEBUG(0,("init_buffer_from_sam: Unable to malloc() memory for buffer!\n"));
 410                 return (-1);
 411         }
 412
 413         /* now for the real call to tdb_pack() */
 414         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING,
 415                 logon_time,
 416                 logoff_time,
 417                 kickoff_time,
 418                 pass_last_set_time,
 419                 pass_can_change_time,
 420                 pass_must_change_time,
 421                 username_len, username,
 422                 domain_len, domain,
 423                 nt_username_len, nt_username,
 424                 fullname_len, fullname,
 425                 homedir_len, homedir,
 426                 dir_drive_len, dir_drive,
 427                 logon_script_len, logon_script,
 428                 profile_path_len, profile_path,
 429                 acct_desc_len, acct_desc,
 430                 workstations_len, workstations,
 431                 unknown_str_len, unknown_str,
 432                 munged_dial_len, munged_dial,
 433                 user_rid,
 434                 group_rid,
 435                 lm_pw_len, lm_pw,
 436                 nt_pw_len, nt_pw,
 437                 pdb_get_acct_ctrl(sampass),
 438                 pdb_get_unknown_3(sampass),
 439                 pdb_get_logon_divs(sampass),
 440                 pdb_get_hours_len(sampass),
 441                 MAX_HOURS_LEN, pdb_get_hours(sampass),
 442                 pdb_get_unknown_5(sampass),
 443                 pdb_get_unknown_6(sampass));
 444
 445
 446         /* check to make sure we got it correct */
 447         if (buflen != len) {
 448                 DEBUG(0, ("init_buffer_from_sam: somthing odd is going on here: bufflen (%d) != len (%d) in tdb_pack operations!\n",
 449                           buflen, len));
 450                 /* error */
 451                 SAFE_FREE (*buf);
 452                 return (-1);
 453         }
 454
 455         return (buflen);
 456 }
 457
 458 /***************************************************************
 459  Open the TDB passwd database for SAM account enumeration.
 460 ****************************************************************/
 461
 462 static NTSTATUS tdbsam_setsampwent(struct pdb_methods *my_methods, BOOL update)
 463 {
 464         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 465
 466         /* Open tdb passwd */
 467         if (!(tdb_state->passwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, update?(O_RDWR|O_CREAT):O_RDONLY, 0600)))
 468         {
 469                 DEBUG(0, ("Unable to open/create TDB passwd\n"));
 470                 return NT_STATUS_UNSUCCESSFUL;
 471         }
 472
 473         tdb_state->key = tdb_firstkey(tdb_state->passwd_tdb);
 474
 475         return NT_STATUS_OK;
 476 }
 477
 478 static void close_tdb(struct tdbsam_privates *tdb_state)
 479 {
 480         if (tdb_state->passwd_tdb) {
 481                 tdb_close(tdb_state->passwd_tdb);
 482                 tdb_state->passwd_tdb = NULL;
 483         }
 484 }
 485
 486 /***************************************************************
 487  End enumeration of the TDB passwd list.
 488 ****************************************************************/
 489
 490 static void tdbsam_endsampwent(struct pdb_methods *my_methods)
 491 {
 492         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 493         SAFE_FREE(tdb_state->key.dptr);
 494         close_tdb(tdb_state);
 495
 496         DEBUG(7, ("endtdbpwent: closed sam database.\n"));
 497 }
 498
 499 /*****************************************************************
 500  Get one SAM_ACCOUNT from the TDB (next in line)
 501 *****************************************************************/
 502
 503 static NTSTATUS tdbsam_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
 504 {
 505         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 506         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 507         TDB_DATA        data, old_key;
 508         const char *prefix = USERPREFIX;
 509         int  prefixlen = strlen (prefix);
 510
 511
 512         if (user==NULL) {
 513                 DEBUG(0,("pdb_get_sampwent: SAM_ACCOUNT is NULL.\n"));
 514                 return nt_status;
 515         }
 516
 517         /* skip all non-USER entries (eg. RIDs) */
 518         while ((tdb_state->key.dsize != 0) && (strncmp(tdb_state->key.dptr, prefix, prefixlen))) {
 519
 520                 old_key = tdb_state->key;
 521
 522                 /* increment to next in line */
 523                 tdb_state->key = tdb_nextkey(tdb_state->passwd_tdb, tdb_state->key);
 524
 525                 SAFE_FREE(old_key.dptr);
 526         }
 527
 528         /* do we have an valid iteration pointer? */
 529         if(tdb_state->passwd_tdb == NULL) {
 530                 DEBUG(0,("pdb_get_sampwent: Bad TDB Context pointer.\n"));
 531                 return nt_status;
 532         }
 533
 534         data = tdb_fetch(tdb_state->passwd_tdb, tdb_state->key);
 535         if (!data.dptr) {
 536                 DEBUG(5,("pdb_getsampwent: database entry not found.\n"));
 537                 return nt_status;
 538         }
 539
 540         /* unpack the buffer */
 541         if (!init_sam_from_buffer(tdb_state, user, data.dptr, data.dsize)) {
 542                 DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n"));
 543                 SAFE_FREE(data.dptr);
 544                 return nt_status;
 545         }
 546         SAFE_FREE(data.dptr);
 547
 548         old_key = tdb_state->key;
 549
 550         /* increment to next in line */
 551         tdb_state->key = tdb_nextkey(tdb_state->passwd_tdb, tdb_state->key);
 552
 553         SAFE_FREE(old_key.dptr);
 554
 555         return NT_STATUS_OK;
 556 }
 557
 558 /******************************************************************
 559  Lookup a name in the SAM TDB
 560 ******************************************************************/
 561
 562 static NTSTATUS tdbsam_getsampwnam (struct pdb_methods *my_methods, SAM_ACCOUNT *user, const char *sname)
 563 {
 564         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 565         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 566         TDB_CONTEXT     *pwd_tdb;
 567         TDB_DATA        data, key;
 568         fstring         keystr;
 569         fstring         name;
 570
 571         if (user==NULL) {
 572                 DEBUG(0,("pdb_getsampwnam: SAM_ACCOUNT is NULL.\n"));
 573                 return nt_status;
 574         }
 575
 576
 577         /* Data is stored in all lower-case */
 578         fstrcpy(name, sname);
 579         strlower(name);
 580
 581         /* set search key */
 582         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 583         key.dptr = keystr;
 584         key.dsize = strlen(keystr) + 1;
 585
 586         /* open the accounts TDB */
 587         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 588                 DEBUG(0, ("pdb_getsampwnam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location));
 589                 return nt_status;
 590         }
 591
 592         /* get the record */
 593         data = tdb_fetch(pwd_tdb, key);
 594         if (!data.dptr) {
 595                 DEBUG(5,("pdb_getsampwnam (TDB): error fetching database.\n"));
 596                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 597                 DEBUGADD(5, (" Key: %s\n", keystr));
 598                 tdb_close(pwd_tdb);
 599                 return nt_status;
 600         }
 601
 602         /* unpack the buffer */
 603         if (!init_sam_from_buffer(tdb_state, user, data.dptr, data.dsize)) {
 604                 DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n"));
 605                 SAFE_FREE(data.dptr);
 606                 tdb_close(pwd_tdb);
 607                 return nt_status;
 608         }
 609         SAFE_FREE(data.dptr);
 610
 611         /* no further use for database, close it now */
 612         tdb_close(pwd_tdb);
 613
 614         return NT_STATUS_OK;
 615 }
 616
 617 /***************************************************************************
 618  Search by rid
 619  **************************************************************************/
 620
 621 static NTSTATUS tdbsam_getsampwrid (struct pdb_methods *my_methods, SAM_ACCOUNT *user, uint32 rid)
 622 {
 623         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 624         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 625         TDB_CONTEXT             *pwd_tdb;
 626         TDB_DATA                data, key;
 627         fstring                 keystr;
 628         fstring                 name;
 629
 630         if (user==NULL) {
 631                 DEBUG(0,("pdb_getsampwrid: SAM_ACCOUNT is NULL.\n"));
 632                 return nt_status;
 633         }
 634
 635         /* set search key */
 636         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid);
 637         key.dptr = keystr;
 638         key.dsize = strlen (keystr) + 1;
 639
 640         /* open the accounts TDB */
 641         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 642                 DEBUG(0, ("pdb_getsampwrid: Unable to open TDB rid database!\n"));
 643                 return nt_status;
 644         }
 645
 646         /* get the record */
 647         data = tdb_fetch (pwd_tdb, key);
 648         if (!data.dptr) {
 649                 DEBUG(5,("pdb_getsampwrid (TDB): error looking up RID %d by key %s.\n", rid, keystr));
 650                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 651                 tdb_close (pwd_tdb);
 652                 return nt_status;
 653         }
 654
 655         fstrcpy(name, data.dptr);
 656         SAFE_FREE(data.dptr);
 657
 658         tdb_close (pwd_tdb);
 659
 660         return tdbsam_getsampwnam (my_methods, user, name);
 661 }
 662
 663 static NTSTATUS tdbsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
 664 {
 665         uint32 rid;
 666         if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
 667                 return NT_STATUS_UNSUCCESSFUL;
 668         return tdbsam_getsampwrid(my_methods, user, rid);
 669 }
 670
 671 /***************************************************************************
 672  Delete a SAM_ACCOUNT
 673 ****************************************************************************/
 674
 675 static NTSTATUS tdbsam_delete_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_pass)
 676 {
 677         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 678         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 679         TDB_CONTEXT     *pwd_tdb;
 680         TDB_DATA        key;
 681         fstring         keystr;
 682         uint32          rid;
 683         fstring         name;
 684
 685         fstrcpy(name, pdb_get_username(sam_pass));
 686         strlower(name);
 687
 688         /* open the TDB */
 689         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDWR, 0600))) {
 690                 DEBUG(0, ("Unable to open TDB passwd!"));
 691                 return nt_status;
 692         }
 693
 694         /* set the search key */
 695         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 696         key.dptr = keystr;
 697         key.dsize = strlen (keystr) + 1;
 698
 699         rid = pdb_get_user_rid(sam_pass);
 700
 701         /* it's outaa here!  8^) */
 702         if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) {
 703                 DEBUG(5, ("Error deleting entry from tdb passwd database!\n"));
 704                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 705                 tdb_close(pwd_tdb);
 706                 return nt_status;
 707         }
 708
 709         /* delete also the RID key */
 710
 711         /* set the search key */
 712         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid);
 713         key.dptr = keystr;
 714         key.dsize = strlen (keystr) + 1;
 715
 716         /* it's outaa here!  8^) */
 717         if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) {
 718                 DEBUG(5, ("Error deleting entry from tdb rid database!\n"));
 719                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 720                 tdb_close(pwd_tdb);
 721                 return nt_status;
 722         }
 723
 724         tdb_close(pwd_tdb);
 725
 726         return NT_STATUS_OK;
 727 }
 728
 729 /***************************************************************************
 730  Update the TDB SAM
 731 ****************************************************************************/
 732
 733 static BOOL tdb_update_sam(struct pdb_methods *my_methods, SAM_ACCOUNT* newpwd, int flag)
 734 {
 735         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 736         TDB_CONTEXT     *pwd_tdb = NULL;
 737         TDB_DATA        key, data;
 738         uint8           *buf = NULL;
 739         fstring         keystr;
 740         fstring         name;
 741         BOOL            ret = True;
 742         uint32          user_rid;
 743         BOOL            tdb_ret;
 744
 745         /* invalidate the existing TDB iterator if it is open */
 746         if (tdb_state->passwd_tdb) {
 747                 tdb_close(tdb_state->passwd_tdb);
 748                 tdb_state->passwd_tdb = NULL;
 749         }
 750
 751         /* open the account TDB passwd*/
 752         pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0600);
 753         if (!pwd_tdb)
 754         {
 755                 DEBUG(0, ("tdb_update_sam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location));
 756                 return False;
 757         }
 758
 759         if (!pdb_get_group_rid(newpwd)) {
 760                 DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a primary group RID\n",pdb_get_username(newpwd)));
 761                 ret = False;
 762                 goto done;
 763         }
 764
 765         /* if flag == TDB_INSERT then make up a new RID else throw an error. */
 766         if (!(user_rid = pdb_get_user_rid(newpwd))) {
 767                 if ((flag & TDB_INSERT) && tdb_state->permit_non_unix_accounts) {
 768                         uint32 lowrid, highrid;
 769                         if (!idmap_get_free_rid_range(&lowrid, &highrid)) {
 770                                 /* should never happen */
 771                                 DEBUG(0, ("tdbsam: something messed up, no high/low rids but nua enabled ?!\n"));
 772                                 ret = False;
 773                                 goto done;
 774                         }
 775                         user_rid = lowrid;
 776                         tdb_ret = tdb_change_uint32_atomic(pwd_tdb, "RID_COUNTER", &user_rid, RID_MULTIPLIER);
 777                         if (!tdb_ret) {
 778                                 ret = False;
 779                                 goto done;
 780                         }
 781                         if (user_rid > highrid) {
 782                                 DEBUG(0, ("tdbsam: no NUA rids available, cannot add user %s!\n", pdb_get_username(newpwd)));
 783                                 ret = False;
 784                                 goto done;
 785                         }
 786                         if (!pdb_set_user_sid_from_rid(newpwd, user_rid, PDB_CHANGED)) {
 787                                 DEBUG(0, ("tdbsam: not able to set new allocated user RID into sam account!\n"));
 788                                 ret = False;
 789                                 goto done;
 790                         }
 791                 } else {
 792                         DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a RID\n",pdb_get_username(newpwd)));
 793                         ret = False;
 794                         goto done;
 795                 }
 796         }
 797
 798         /* copy the SAM_ACCOUNT struct into a BYTE buffer for storage */
 799         if ((data.dsize=init_buffer_from_sam (tdb_state, &buf, newpwd)) == -1) {
 800                 DEBUG(0,("tdb_update_sam: ERROR - Unable to copy SAM_ACCOUNT info BYTE buffer!\n"));
 801                 ret = False;
 802                 goto done;
 803         }
 804         data.dptr = buf;
 805
 806         fstrcpy(name, pdb_get_username(newpwd));
 807         strlower(name);
 808
 809         DEBUG(5, ("Storing %saccount %s with RID %d\n", flag == TDB_INSERT ? "(new) " : "", name, user_rid));
 810
 811         /* setup the USER index key */
 812         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 813         key.dptr = keystr;
 814         key.dsize = strlen(keystr) + 1;
 815
 816         /* add the account */
 817         if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) {
 818                 DEBUG(0, ("Unable to modify passwd TDB!"));
 819                 DEBUGADD(0, (" Error: %s", tdb_errorstr(pwd_tdb)));
 820                 DEBUGADD(0, (" occured while storing the main record (%s)\n", keystr));
 821                 ret = False;
 822                 goto done;
 823         }
 824
 825         /* setup RID data */
 826         data.dsize = strlen(name) + 1;
 827         data.dptr = name;
 828
 829         /* setup the RID index key */
 830         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, user_rid);
 831         key.dptr = keystr;
 832         key.dsize = strlen (keystr) + 1;
 833
 834         /* add the reference */
 835         if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) {
 836                 DEBUG(0, ("Unable to modify TDB passwd !"));
 837                 DEBUGADD(0, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 838                 DEBUGADD(0, (" occured while storing the RID index (%s)\n", keystr));
 839                 ret = False;
 840                 goto done;
 841         }
 842
 843 done:
 844         /* cleanup */
 845         tdb_close (pwd_tdb);
 846         SAFE_FREE(buf);
 847
 848         return (ret);
 849 }
 850
 851 #if 0
 852 /***************************************************************************
 853  Allocates a new RID and returns it to the caller as a domain sid
 854
 855  NOTE: Use carefullt, do not waste RIDs they are a limited resource!
 856                                                         - SSS
 857  ***************************************************************************/
 858
 859 static NTSTATUS tdbsam_get_next_sid (struct pdb_methods *my_methods, DOM_SID *sid)
 860 {
 861         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 862         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 863         TDB_CONTEXT     *pwd_tdb;
 864         uint32          rid;
 865
 866         if (sid == NULL) {
 867                 return NT_STATUS_INVALID_PARAMETER;
 868         }
 869
 870         pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0600);
 871         if (!pwd_tdb)
 872         {
 873                 DEBUG(0, ("tdbsam_get_next_sid: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location));
 874                 return NT_STATUS_UNSUCCESSFUL;
 875         }
 876
 877         rid = BASE_RID;
 878         if (tdb_change_uint32_atomic(pwd_tdb, "RID_COUNTER", &rid, 1)) {
 879
 880                 sid_copy(sid, get_global_sam_sid());
 881                 if (!sid_append_rid(sid, rid)) {
 882                         goto done;
 883                 }
 884
 885                 ret = NT_STATUS_OK;
 886         }
 887
 888 done:
 889         tdb_close (pwd_tdb);
 890         return ret;
 891 }
 892 #endif
 893
 894 /***************************************************************************
 895  Modifies an existing SAM_ACCOUNT
 896 ****************************************************************************/
 897
 898 static NTSTATUS tdbsam_update_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd)
 899 {
 900         if (tdb_update_sam(my_methods, newpwd, TDB_MODIFY))
 901                 return NT_STATUS_OK;
 902         else
 903                 return NT_STATUS_UNSUCCESSFUL;
 904 }
 905
 906 /***************************************************************************
 907  Adds an existing SAM_ACCOUNT
 908 ****************************************************************************/
 909
 910 static NTSTATUS tdbsam_add_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd)
 911 {
 912         if (tdb_update_sam(my_methods, newpwd, TDB_INSERT))
 913                 return NT_STATUS_OK;
 914         else
 915                 return NT_STATUS_UNSUCCESSFUL;
 916 }
 917
 918 static void free_private_data(void **vp)
 919 {
 920         struct tdbsam_privates **tdb_state = (struct tdbsam_privates **)vp;
 921         close_tdb(*tdb_state);
 922         *tdb_state = NULL;
 923
 924         /* No need to free any further, as it is talloc()ed */
 925 }
 926
 927
 928 static NTSTATUS pdb_init_tdbsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
 929 {
 930         NTSTATUS nt_status;
 931         struct tdbsam_privates *tdb_state;
 932         uid_t low_nua_uid, high_nua_uid;
 933
 934         if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
 935                 return nt_status;
 936         }
 937
 938         (*pdb_method)->name = "tdbsam";
 939
 940         (*pdb_method)->setsampwent = tdbsam_setsampwent;
 941         (*pdb_method)->endsampwent = tdbsam_endsampwent;
 942         (*pdb_method)->getsampwent = tdbsam_getsampwent;
 943         (*pdb_method)->getsampwnam = tdbsam_getsampwnam;
 944         (*pdb_method)->getsampwsid = tdbsam_getsampwsid;
 945         (*pdb_method)->add_sam_account = tdbsam_add_sam_account;
 946         (*pdb_method)->update_sam_account = tdbsam_update_sam_account;
 947         (*pdb_method)->delete_sam_account = tdbsam_delete_sam_account;
 948
 949         tdb_state = talloc_zero(pdb_context->mem_ctx, sizeof(struct tdbsam_privates));
 950
 951         if (!tdb_state) {
 952                 DEBUG(0, ("talloc() failed for tdbsam private_data!\n"));
 953                 return NT_STATUS_NO_MEMORY;
 954         }
 955
 956         if (location) {
 957                 tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, location);
 958         } else {
 959                 pstring tdbfile;
 960                 get_private_directory(tdbfile);
 961                 pstrcat(tdbfile, "/");
 962                 pstrcat(tdbfile, PASSDB_FILE_NAME);
 963                 tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, tdbfile);
 964         }
 965
 966         (*pdb_method)->private_data = tdb_state;
 967
 968         (*pdb_method)->free_private_data = free_private_data;
 969
 970         if (lp_idmap_uid(&low_nua_uid, &high_nua_uid)) {
 971                 DEBUG(3, ("idmap uid range defined, non unix accounts enabled\n"));
 972
 973                 tdb_state->permit_non_unix_accounts = True;
 974
 975                 tdb_state->low_nua_rid=fallback_pdb_uid_to_user_rid(low_nua_uid);
 976
 977                 tdb_state->high_nua_rid=fallback_pdb_uid_to_user_rid(high_nua_uid);
 978
 979         } else {
 980                 tdb_state->algorithmic_rids = True;
 981         }
 982
 983         return NT_STATUS_OK;
 984 }
 985
 986 NTSTATUS pdb_tdbsam_init(void)
 987 {
 988         return smb_register_passdb(PASSDB_INTERFACE_VERSION, "tdbsam", pdb_init_tdbsam);
 989 }
 990