source/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 #ifdef WITH_TDB_SAM
  41
  42 #define PDB_VERSION             "20010830"
  43 #define PASSDB_FILE_NAME        "passdb.tdb"
  44 #define TDB_FORMAT_STRING       "ddddddBBBBBBBBBBBBddBBwdwdBdd"
  45 #define USERPREFIX              "USER_"
  46 #define RIDPREFIX               "RID_"
  47
  48 struct tdbsam_privates {
  49         TDB_CONTEXT     *passwd_tdb;
  50         TDB_DATA        key;
  51
  52         /* retrive-once info */
  53         const char *tdbsam_location;
  54
  55         BOOL permit_non_unix_accounts;
  56
  57         BOOL algorithmic_rids;
  58
  59         uint32 low_nua_rid;
  60         uint32 high_nua_rid;
  61 };
  62
  63 /**********************************************************************
  64  Intialize a SAM_ACCOUNT struct from a BYTE buffer of size len
  65  *********************************************************************/
  66
  67 static BOOL init_sam_from_buffer (struct tdbsam_privates *tdb_state,
  68                                   SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
  69 {
  70
  71         /* times are stored as 32bit integer
  72            take care on system with 64bit wide time_t
  73            --SSS */
  74         uint32  logon_time,
  75                 logoff_time,
  76                 kickoff_time,
  77                 pass_last_set_time,
  78                 pass_can_change_time,
  79                 pass_must_change_time;
  80         char *username;
  81         char *domain;
  82         char *nt_username;
  83         char *dir_drive;
  84         char *unknown_str;
  85         char *munged_dial;
  86         char *fullname;
  87         char *homedir;
  88         char *logon_script;
  89         char *profile_path;
  90         char *acct_desc;
  91         char *workstations;
  92         uint32  username_len, domain_len, nt_username_len,
  93                 dir_drive_len, unknown_str_len, munged_dial_len,
  94                 fullname_len, homedir_len, logon_script_len,
  95                 profile_path_len, acct_desc_len, workstations_len;
  96
  97         uint32  user_rid, group_rid, unknown_3, hours_len, unknown_5, unknown_6;
  98         uint16  acct_ctrl, logon_divs;
  99         uint8   *hours;
 100         static uint8    *lm_pw_ptr, *nt_pw_ptr;
 101         uint32          len = 0;
 102         uint32          lm_pw_len, nt_pw_len, hourslen;
 103         BOOL ret = True;
 104         struct passwd *pw;
 105         uid_t uid = -1;
 106         gid_t gid = -1; /* This is what standard sub advanced expects if no gid is known */
 107
 108         if(sampass == NULL || buf == NULL) {
 109                 DEBUG(0, ("init_sam_from_buffer: NULL parameters found!\n"));
 110                 return False;
 111         }
 112
 113         /* unpack the buffer into variables */
 114         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING,
 115                 &logon_time,
 116                 &logoff_time,
 117                 &kickoff_time,
 118                 &pass_last_set_time,
 119                 &pass_can_change_time,
 120                 &pass_must_change_time,
 121                 &username_len, &username,
 122                 &domain_len, &domain,
 123                 &nt_username_len, &nt_username,
 124                 &fullname_len, &fullname,
 125                 &homedir_len, &homedir,
 126                 &dir_drive_len, &dir_drive,
 127                 &logon_script_len, &logon_script,
 128                 &profile_path_len, &profile_path,
 129                 &acct_desc_len, &acct_desc,
 130                 &workstations_len, &workstations,
 131                 &unknown_str_len, &unknown_str,
 132                 &munged_dial_len, &munged_dial,
 133                 &user_rid,
 134                 &group_rid,
 135                 &lm_pw_len, &lm_pw_ptr,
 136                 &nt_pw_len, &nt_pw_ptr,
 137                 &acct_ctrl,
 138                 &unknown_3,
 139                 &logon_divs,
 140                 &hours_len,
 141                 &hourslen, &hours,
 142                 &unknown_5,
 143                 &unknown_6);
 144
 145         if (len == -1)  {
 146                 ret = False;
 147                 goto done;
 148         }
 149
 150         /* validate the account and fill in UNIX uid and gid. Standard
 151          * getpwnam() is used instead of Get_Pwnam() as we do not need
 152          * to try case permutations
 153          */
 154         if (!username || !(pw = getpwnam_alloc(username))) {
 155                 if (!(tdb_state->permit_non_unix_accounts)) {
 156                         DEBUG(0,("tdbsam: getpwnam_alloc(%s) return NULL.  User does not exist!\n", username));
 157                         ret = False;
 158                         goto done;
 159                 }
 160         }
 161
 162         if (pw) {
 163                 uid = pw->pw_uid;
 164                 gid = pw->pw_gid;
 165
 166                 pdb_set_unix_homedir(sampass, pw->pw_dir, PDB_SET);
 167
 168                 passwd_free(&pw);
 169
 170                 pdb_set_uid(sampass, uid, PDB_SET);
 171                 pdb_set_gid(sampass, gid, PDB_SET);
 172         }
 173
 174         pdb_set_logon_time(sampass, logon_time, PDB_SET);
 175         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
 176         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
 177         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
 178         pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
 179         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
 180
 181         pdb_set_username     (sampass, username, PDB_SET);
 182         pdb_set_domain       (sampass, domain, PDB_SET);
 183         pdb_set_nt_username  (sampass, nt_username, PDB_SET);
 184         pdb_set_fullname     (sampass, fullname, PDB_SET);
 185
 186         if (homedir) {
 187                 pdb_set_homedir(sampass, homedir, PDB_SET);
 188         }
 189         else {
 190                 pdb_set_homedir(sampass,
 191                                 talloc_sub_specified(sampass->mem_ctx,
 192                                                        lp_logon_home(),
 193                                                        username, domain,
 194                                                        uid, gid),
 195                                 PDB_DEFAULT);
 196         }
 197
 198         if (dir_drive)
 199                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 200         else {
 201                 pdb_set_dir_drive(sampass,
 202                                   talloc_sub_specified(sampass->mem_ctx,
 203                                                          lp_logon_drive(),
 204                                                          username, domain,
 205                                                          uid, gid),
 206                                   PDB_DEFAULT);
 207         }
 208
 209         if (logon_script)
 210                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
 211         else {
 212                 pdb_set_logon_script(sampass,
 213                                      talloc_sub_specified(sampass->mem_ctx,
 214                                                             lp_logon_script(),
 215                                                             username, domain,
 216                                                             uid, gid),
 217                                   PDB_DEFAULT);
 218         }
 219
 220         if (profile_path) {
 221                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
 222         } else {
 223                 pdb_set_profile_path(sampass,
 224                                      talloc_sub_specified(sampass->mem_ctx,
 225                                                             lp_logon_path(),
 226                                                             username, domain,
 227                                                             uid, gid),
 228                                      PDB_DEFAULT);
 229         }
 230
 231         pdb_set_acct_desc    (sampass, acct_desc, PDB_SET);
 232         pdb_set_workstations (sampass, workstations, PDB_SET);
 233         pdb_set_munged_dial  (sampass, munged_dial, PDB_SET);
 234
 235         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
 236                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
 237                         ret = False;
 238                         goto done;
 239                 }
 240         }
 241
 242         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
 243                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
 244                         ret = False;
 245                         goto done;
 246                 }
 247         }
 248
 249         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
 250         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
 251         pdb_set_unknown_3(sampass, unknown_3, PDB_SET);
 252         pdb_set_hours_len(sampass, hours_len, PDB_SET);
 253         pdb_set_unknown_5(sampass, unknown_5, PDB_SET);
 254         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
 255         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
 256         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
 257         pdb_set_hours(sampass, hours, PDB_SET);
 258
 259 done:
 260
 261         SAFE_FREE(username);
 262         SAFE_FREE(domain);
 263         SAFE_FREE(nt_username);
 264         SAFE_FREE(fullname);
 265         SAFE_FREE(homedir);
 266         SAFE_FREE(dir_drive);
 267         SAFE_FREE(logon_script);
 268         SAFE_FREE(profile_path);
 269         SAFE_FREE(acct_desc);
 270         SAFE_FREE(workstations);
 271         SAFE_FREE(munged_dial);
 272
 273         return ret;
 274 }
 275
 276 /**********************************************************************
 277  Intialize a BYTE buffer from a SAM_ACCOUNT struct
 278  *********************************************************************/
 279 static uint32 init_buffer_from_sam (struct tdbsam_privates *tdb_state,
 280                                     uint8 **buf, const SAM_ACCOUNT *sampass)
 281 {
 282         size_t          len, buflen;
 283
 284         /* times are stored as 32bit integer
 285            take care on system with 64bit wide time_t
 286            --SSS */
 287         uint32  logon_time,
 288                 logoff_time,
 289                 kickoff_time,
 290                 pass_last_set_time,
 291                 pass_can_change_time,
 292                 pass_must_change_time;
 293
 294         uint32  user_rid, group_rid;
 295
 296         const char *username;
 297         const char *domain;
 298         const char *nt_username;
 299         const char *dir_drive;
 300         const char *unknown_str;
 301         const char *munged_dial;
 302         const char *fullname;
 303         const char *homedir;
 304         const char *logon_script;
 305         const char *profile_path;
 306         const char *acct_desc;
 307         const char *workstations;
 308         uint32  username_len, domain_len, nt_username_len,
 309                 dir_drive_len, unknown_str_len, munged_dial_len,
 310                 fullname_len, homedir_len, logon_script_len,
 311                 profile_path_len, acct_desc_len, workstations_len;
 312
 313         const uint8 *lm_pw;
 314         const uint8 *nt_pw;
 315         uint32  lm_pw_len = 16;
 316         uint32  nt_pw_len = 16;
 317
 318         /* do we have a valid SAM_ACCOUNT pointer? */
 319         if (sampass == NULL) {
 320                 DEBUG(0, ("init_buffer_from_sam: SAM_ACCOUNT is NULL!\n"));
 321                 return -1;
 322         }
 323
 324         *buf = NULL;
 325         buflen = 0;
 326
 327         logon_time = (uint32)pdb_get_logon_time(sampass);
 328         logoff_time = (uint32)pdb_get_logoff_time(sampass);
 329         kickoff_time = (uint32)pdb_get_kickoff_time(sampass);
 330         pass_can_change_time = (uint32)pdb_get_pass_can_change_time(sampass);
 331         pass_must_change_time = (uint32)pdb_get_pass_must_change_time(sampass);
 332         pass_last_set_time = (uint32)pdb_get_pass_last_set_time(sampass);
 333
 334         user_rid = pdb_get_user_rid(sampass);
 335         group_rid = pdb_get_group_rid(sampass);
 336
 337         username = pdb_get_username(sampass);
 338         if (username) username_len = strlen(username) +1;
 339         else username_len = 0;
 340
 341         domain = pdb_get_domain(sampass);
 342         if (domain) domain_len = strlen(domain) +1;
 343         else domain_len = 0;
 344
 345         nt_username = pdb_get_nt_username(sampass);
 346         if (nt_username) nt_username_len = strlen(nt_username) +1;
 347         else nt_username_len = 0;
 348
 349         fullname = pdb_get_fullname(sampass);
 350         if (fullname) fullname_len = strlen(fullname) +1;
 351         else fullname_len = 0;
 352
 353         /*
 354          * Only updates fields which have been set (not defaults from smb.conf)
 355          */
 356
 357         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE))
 358           dir_drive = pdb_get_dir_drive(sampass);
 359         else dir_drive = NULL;
 360         if (dir_drive) dir_drive_len = strlen(dir_drive) +1;
 361         else dir_drive_len = 0;
 362
 363         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) homedir = pdb_get_homedir(sampass);
 364         else homedir = NULL;
 365         if (homedir) homedir_len = strlen(homedir) +1;
 366         else homedir_len = 0;
 367
 368         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) logon_script = pdb_get_logon_script(sampass);
 369         else logon_script = NULL;
 370         if (logon_script) logon_script_len = strlen(logon_script) +1;
 371         else logon_script_len = 0;
 372
 373         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) profile_path = pdb_get_profile_path(sampass);
 374         else profile_path = NULL;
 375         if (profile_path) profile_path_len = strlen(profile_path) +1;
 376         else profile_path_len = 0;
 377
 378         lm_pw = pdb_get_lanman_passwd(sampass);
 379         if (!lm_pw) lm_pw_len = 0;
 380
 381         nt_pw = pdb_get_nt_passwd(sampass);
 382         if (!nt_pw) nt_pw_len = 0;
 383
 384         acct_desc = pdb_get_acct_desc(sampass);
 385         if (acct_desc) acct_desc_len = strlen(acct_desc) +1;
 386         else acct_desc_len = 0;
 387
 388         workstations = pdb_get_workstations(sampass);
 389         if (workstations) workstations_len = strlen(workstations) +1;
 390         else workstations_len = 0;
 391
 392         unknown_str = NULL;
 393         unknown_str_len = 0;
 394
 395         munged_dial = pdb_get_munged_dial(sampass);
 396         if (munged_dial) munged_dial_len = strlen(munged_dial) +1;
 397         else munged_dial_len = 0;
 398
 399         /* one time to get the size needed */
 400         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING,
 401                 logon_time,
 402                 logoff_time,
 403                 kickoff_time,
 404                 pass_last_set_time,
 405                 pass_can_change_time,
 406                 pass_must_change_time,
 407                 username_len, username,
 408                 domain_len, domain,
 409                 nt_username_len, nt_username,
 410                 fullname_len, fullname,
 411                 homedir_len, homedir,
 412                 dir_drive_len, dir_drive,
 413                 logon_script_len, logon_script,
 414                 profile_path_len, profile_path,
 415                 acct_desc_len, acct_desc,
 416                 workstations_len, workstations,
 417                 unknown_str_len, unknown_str,
 418                 munged_dial_len, munged_dial,
 419                 user_rid,
 420                 group_rid,
 421                 lm_pw_len, lm_pw,
 422                 nt_pw_len, nt_pw,
 423                 pdb_get_acct_ctrl(sampass),
 424                 pdb_get_unknown_3(sampass),
 425                 pdb_get_logon_divs(sampass),
 426                 pdb_get_hours_len(sampass),
 427                 MAX_HOURS_LEN, pdb_get_hours(sampass),
 428                 pdb_get_unknown_5(sampass),
 429                 pdb_get_unknown_6(sampass));
 430
 431
 432         /* malloc the space needed */
 433         if ( (*buf=(uint8*)malloc(len)) == NULL) {
 434                 DEBUG(0,("init_buffer_from_sam: Unable to malloc() memory for buffer!\n"));
 435                 return (-1);
 436         }
 437
 438         /* now for the real call to tdb_pack() */
 439         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING,
 440                 logon_time,
 441                 logoff_time,
 442                 kickoff_time,
 443                 pass_last_set_time,
 444                 pass_can_change_time,
 445                 pass_must_change_time,
 446                 username_len, username,
 447                 domain_len, domain,
 448                 nt_username_len, nt_username,
 449                 fullname_len, fullname,
 450                 homedir_len, homedir,
 451                 dir_drive_len, dir_drive,
 452                 logon_script_len, logon_script,
 453                 profile_path_len, profile_path,
 454                 acct_desc_len, acct_desc,
 455                 workstations_len, workstations,
 456                 unknown_str_len, unknown_str,
 457                 munged_dial_len, munged_dial,
 458                 user_rid,
 459                 group_rid,
 460                 lm_pw_len, lm_pw,
 461                 nt_pw_len, nt_pw,
 462                 pdb_get_acct_ctrl(sampass),
 463                 pdb_get_unknown_3(sampass),
 464                 pdb_get_logon_divs(sampass),
 465                 pdb_get_hours_len(sampass),
 466                 MAX_HOURS_LEN, pdb_get_hours(sampass),
 467                 pdb_get_unknown_5(sampass),
 468                 pdb_get_unknown_6(sampass));
 469
 470
 471         /* check to make sure we got it correct */
 472         if (buflen != len) {
 473                 DEBUG(0, ("init_buffer_from_sam: somthing odd is going on here: bufflen (%d) != len (%d) in tdb_pack operations!\n",
 474                           buflen, len));
 475                 /* error */
 476                 SAFE_FREE (*buf);
 477                 return (-1);
 478         }
 479
 480         return (buflen);
 481 }
 482
 483 /***************************************************************
 484  Open the TDB passwd database for SAM account enumeration.
 485 ****************************************************************/
 486
 487 static NTSTATUS tdbsam_setsampwent(struct pdb_methods *my_methods, BOOL update)
 488 {
 489         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 490
 491         /* Open tdb passwd */
 492         if (!(tdb_state->passwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, update?(O_RDWR|O_CREAT):O_RDONLY, 0600)))
 493         {
 494                 DEBUG(0, ("Unable to open/create TDB passwd\n"));
 495                 return NT_STATUS_UNSUCCESSFUL;
 496         }
 497
 498         tdb_state->key = tdb_firstkey(tdb_state->passwd_tdb);
 499
 500         return NT_STATUS_OK;
 501 }
 502
 503 static void close_tdb(struct tdbsam_privates *tdb_state)
 504 {
 505         if (tdb_state->passwd_tdb) {
 506                 tdb_close(tdb_state->passwd_tdb);
 507                 tdb_state->passwd_tdb = NULL;
 508         }
 509 }
 510
 511 /***************************************************************
 512  End enumeration of the TDB passwd list.
 513 ****************************************************************/
 514
 515 static void tdbsam_endsampwent(struct pdb_methods *my_methods)
 516 {
 517         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 518         close_tdb(tdb_state);
 519
 520         DEBUG(7, ("endtdbpwent: closed sam database.\n"));
 521 }
 522
 523 /*****************************************************************
 524  Get one SAM_ACCOUNT from the TDB (next in line)
 525 *****************************************************************/
 526
 527 static NTSTATUS tdbsam_getsampwent(struct pdb_methods *my_methods, SAM_ACCOUNT *user)
 528 {
 529         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 530         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 531         TDB_DATA        data;
 532         char *prefix = USERPREFIX;
 533         int  prefixlen = strlen (prefix);
 534
 535
 536         if (user==NULL) {
 537                 DEBUG(0,("pdb_get_sampwent: SAM_ACCOUNT is NULL.\n"));
 538                 return nt_status;
 539         }
 540
 541         /* skip all non-USER entries (eg. RIDs) */
 542         while ((tdb_state->key.dsize != 0) && (strncmp(tdb_state->key.dptr, prefix, prefixlen)))
 543                 /* increment to next in line */
 544                 tdb_state->key = tdb_nextkey(tdb_state->passwd_tdb, tdb_state->key);
 545
 546         /* do we have an valid iteration pointer? */
 547         if(tdb_state->passwd_tdb == NULL) {
 548                 DEBUG(0,("pdb_get_sampwent: Bad TDB Context pointer.\n"));
 549                 return nt_status;
 550         }
 551
 552         data = tdb_fetch(tdb_state->passwd_tdb, tdb_state->key);
 553         if (!data.dptr) {
 554                 DEBUG(5,("pdb_getsampwent: database entry not found.\n"));
 555                 return nt_status;
 556         }
 557
 558         /* unpack the buffer */
 559         if (!init_sam_from_buffer(tdb_state, user, data.dptr, data.dsize)) {
 560                 DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n"));
 561                 SAFE_FREE(data.dptr);
 562                 return nt_status;
 563         }
 564         SAFE_FREE(data.dptr);
 565
 566         /* increment to next in line */
 567         tdb_state->key = tdb_nextkey(tdb_state->passwd_tdb, tdb_state->key);
 568
 569         return NT_STATUS_OK;
 570 }
 571
 572 /******************************************************************
 573  Lookup a name in the SAM TDB
 574 ******************************************************************/
 575
 576 static NTSTATUS tdbsam_getsampwnam (struct pdb_methods *my_methods, SAM_ACCOUNT *user, const char *sname)
 577 {
 578         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 579         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 580         TDB_CONTEXT     *pwd_tdb;
 581         TDB_DATA        data, key;
 582         fstring         keystr;
 583         fstring         name;
 584
 585         if (user==NULL) {
 586                 DEBUG(0,("pdb_getsampwnam: SAM_ACCOUNT is NULL.\n"));
 587                 return nt_status;
 588         }
 589
 590         /* Data is stored in all lower-case */
 591         unix_strlower(sname, -1, name, sizeof(name));
 592
 593         /* set search key */
 594         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 595         key.dptr = keystr;
 596         key.dsize = strlen(keystr) + 1;
 597
 598         /* open the accounts TDB */
 599         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 600                 DEBUG(0, ("pdb_getsampwnam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location));
 601                 return nt_status;
 602         }
 603
 604         /* get the record */
 605         data = tdb_fetch(pwd_tdb, key);
 606         if (!data.dptr) {
 607                 DEBUG(5,("pdb_getsampwnam (TDB): error fetching database.\n"));
 608                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 609                 DEBUGADD(5, (" Key: %s\n", keystr));
 610                 tdb_close(pwd_tdb);
 611                 return nt_status;
 612         }
 613
 614         /* unpack the buffer */
 615         if (!init_sam_from_buffer(tdb_state, user, data.dptr, data.dsize)) {
 616                 DEBUG(0,("pdb_getsampwent: Bad SAM_ACCOUNT entry returned from TDB!\n"));
 617                 SAFE_FREE(data.dptr);
 618                 tdb_close(pwd_tdb);
 619                 return nt_status;
 620         }
 621         SAFE_FREE(data.dptr);
 622
 623         /* no further use for database, close it now */
 624         tdb_close(pwd_tdb);
 625
 626         return NT_STATUS_OK;
 627 }
 628
 629 /***************************************************************************
 630  Search by rid
 631  **************************************************************************/
 632
 633 static NTSTATUS tdbsam_getsampwrid (struct pdb_methods *my_methods, SAM_ACCOUNT *user, uint32 rid)
 634 {
 635         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 636         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 637         TDB_CONTEXT             *pwd_tdb;
 638         TDB_DATA                data, key;
 639         fstring                 keystr;
 640         fstring                 name;
 641
 642         if (user==NULL) {
 643                 DEBUG(0,("pdb_getsampwrid: SAM_ACCOUNT is NULL.\n"));
 644                 return nt_status;
 645         }
 646
 647         /* set search key */
 648         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid);
 649         key.dptr = keystr;
 650         key.dsize = strlen (keystr) + 1;
 651
 652         /* open the accounts TDB */
 653         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDONLY, 0600))) {
 654                 DEBUG(0, ("pdb_getsampwrid: Unable to open TDB rid database!\n"));
 655                 return nt_status;
 656         }
 657
 658         /* get the record */
 659         data = tdb_fetch (pwd_tdb, key);
 660         if (!data.dptr) {
 661                 DEBUG(5,("pdb_getsampwrid (TDB): error looking up RID %d by key %s.\n", rid, keystr));
 662                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 663                 tdb_close (pwd_tdb);
 664                 return nt_status;
 665         }
 666
 667         fstrcpy (name, data.dptr);
 668         SAFE_FREE(data.dptr);
 669
 670         tdb_close (pwd_tdb);
 671
 672         return tdbsam_getsampwnam (my_methods, user, name);
 673 }
 674
 675 static NTSTATUS tdbsam_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
 676 {
 677         uint32 rid;
 678         if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid))
 679                 return NT_STATUS_UNSUCCESSFUL;
 680         return tdbsam_getsampwrid(my_methods, user, rid);
 681 }
 682
 683 /***************************************************************************
 684  Delete a SAM_ACCOUNT
 685 ****************************************************************************/
 686
 687 static NTSTATUS tdbsam_delete_sam_account(struct pdb_methods *my_methods, SAM_ACCOUNT *sam_pass)
 688 {
 689         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 690         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 691         TDB_CONTEXT     *pwd_tdb;
 692         TDB_DATA        key;
 693         fstring         keystr;
 694         uint32          rid;
 695         fstring         name;
 696
 697         unix_strlower(pdb_get_username(sam_pass), -1, name, sizeof(name));
 698
 699         /* open the TDB */
 700         if (!(pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDWR, 0600))) {
 701                 DEBUG(0, ("Unable to open TDB passwd!"));
 702                 return nt_status;
 703         }
 704
 705         /* set the search key */
 706         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 707         key.dptr = keystr;
 708         key.dsize = strlen (keystr) + 1;
 709
 710         rid = pdb_get_user_rid(sam_pass);
 711
 712         /* it's outaa here!  8^) */
 713         if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) {
 714                 DEBUG(5, ("Error deleting entry from tdb passwd database!\n"));
 715                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 716                 tdb_close(pwd_tdb);
 717                 return nt_status;
 718         }
 719
 720         /* delete also the RID key */
 721
 722         /* set the search key */
 723         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, rid);
 724         key.dptr = keystr;
 725         key.dsize = strlen (keystr) + 1;
 726
 727         /* it's outaa here!  8^) */
 728         if (tdb_delete(pwd_tdb, key) != TDB_SUCCESS) {
 729                 DEBUG(5, ("Error deleting entry from tdb rid database!\n"));
 730                 DEBUGADD(5, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 731                 tdb_close(pwd_tdb);
 732                 return nt_status;
 733         }
 734
 735         tdb_close(pwd_tdb);
 736
 737         return NT_STATUS_OK;
 738 }
 739
 740 /***************************************************************************
 741  Update the TDB SAM
 742 ****************************************************************************/
 743
 744 static BOOL tdb_update_sam(struct pdb_methods *my_methods, SAM_ACCOUNT* newpwd, int flag)
 745 {
 746         struct tdbsam_privates *tdb_state = (struct tdbsam_privates *)my_methods->private_data;
 747         TDB_CONTEXT     *pwd_tdb = NULL;
 748         TDB_DATA        key, data;
 749         uint8           *buf = NULL;
 750         fstring         keystr;
 751         fstring         name;
 752         BOOL            ret = True;
 753         uint32          user_rid;
 754         BOOL            tdb_ret;
 755
 756         /* invalidate the existing TDB iterator if it is open */
 757         if (tdb_state->passwd_tdb) {
 758                 tdb_close(tdb_state->passwd_tdb);
 759                 tdb_state->passwd_tdb = NULL;
 760         }
 761
 762         /* open the account TDB passwd*/
 763         pwd_tdb = tdb_open_log(tdb_state->tdbsam_location, 0, TDB_DEFAULT, O_RDWR | O_CREAT, 0600);
 764         if (!pwd_tdb)
 765         {
 766                 DEBUG(0, ("tdb_update_sam: Unable to open TDB passwd (%s)!\n", tdb_state->tdbsam_location));
 767                 return False;
 768         }
 769
 770         /* if flag == TDB_INSERT then make up a new RID else throw an error. */
 771         if (!(user_rid = pdb_get_user_rid(newpwd))) {
 772                 if (flag & TDB_INSERT) {
 773                         if (IS_SAM_UNIX_USER(newpwd)) {
 774                                 if (tdb_state->algorithmic_rids) {
 775                                         user_rid = fallback_pdb_uid_to_user_rid(pdb_get_uid(newpwd));
 776                                 } else {
 777                                         user_rid = BASE_RID;
 778                                         tdb_ret = tdb_change_uint32_atomic(pwd_tdb, "RID_COUNTER", &user_rid, RID_MULTIPLIER);
 779                                         if (!tdb_ret) {
 780                                                 ret = False;
 781                                                 goto done;
 782                                         }
 783                                 }
 784                                 pdb_set_user_sid_from_rid(newpwd, user_rid, PDB_CHANGED);
 785                         } else {
 786                                 user_rid = tdb_state->low_nua_rid;
 787                                 tdb_ret = tdb_change_uint32_atomic(pwd_tdb, "NUA_RID_COUNTER", &user_rid, RID_MULTIPLIER);
 788                                 if (!tdb_ret) {
 789                                         ret = False;
 790                                         goto done;
 791                                 }
 792                                 if (user_rid > tdb_state->high_nua_rid) {
 793                                         DEBUG(0, ("tdbsam: no NUA rids available, cannot add user %s!\n", pdb_get_username(newpwd)));
 794                                         ret = False;
 795                                         goto done;
 796                                 }
 797                                 pdb_set_user_sid_from_rid(newpwd, user_rid, PDB_CHANGED);
 798                         }
 799                 } else {
 800                         DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a RID\n",pdb_get_username(newpwd)));
 801                         ret = False;
 802                         goto done;
 803                 }
 804         }
 805
 806         if (!pdb_get_group_rid(newpwd)) {
 807                 if (flag & TDB_INSERT) {
 808                         if (!tdb_state->permit_non_unix_accounts) {
 809                                 DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a primary group RID\n",pdb_get_username(newpwd)));
 810                                 ret = False;
 811                                 goto done;
 812                         } else {
 813                                 /* This seems like a good default choice for non-unix users */
 814                                 pdb_set_group_sid_from_rid(newpwd, DOMAIN_GROUP_RID_USERS, PDB_DEFAULT);
 815                         }
 816                 } else {
 817                         DEBUG (0,("tdb_update_sam: Failing to store a SAM_ACCOUNT for [%s] without a primary group RID\n",pdb_get_username(newpwd)));
 818                         ret = False;
 819                         goto done;
 820                 }
 821         }
 822
 823         /* copy the SAM_ACCOUNT struct into a BYTE buffer for storage */
 824         if ((data.dsize=init_buffer_from_sam (tdb_state, &buf, newpwd)) == -1) {
 825                 DEBUG(0,("tdb_update_sam: ERROR - Unable to copy SAM_ACCOUNT info BYTE buffer!\n"));
 826                 ret = False;
 827                 goto done;
 828         }
 829         data.dptr = buf;
 830
 831         unix_strlower(pdb_get_username(newpwd), -1, name, sizeof(name));
 832
 833         DEBUG(5, ("Storing %saccount %s with RID %d\n", flag == TDB_INSERT ? "(new) " : "", name, user_rid));
 834
 835         /* setup the USER index key */
 836         slprintf(keystr, sizeof(keystr)-1, "%s%s", USERPREFIX, name);
 837         key.dptr = keystr;
 838         key.dsize = strlen (keystr) + 1;
 839
 840         /* add the account */
 841         if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) {
 842                 DEBUG(0, ("Unable to modify passwd TDB!"));
 843                 DEBUGADD(0, (" Error: %s", tdb_errorstr(pwd_tdb)));
 844                 DEBUGADD(0, (" occured while storing the main record (%s)\n", keystr));
 845                 ret = False;
 846                 goto done;
 847         }
 848
 849         /* setup RID data */
 850         data.dsize = sizeof(fstring);
 851         data.dptr = name;
 852
 853         /* setup the RID index key */
 854         slprintf(keystr, sizeof(keystr)-1, "%s%.8x", RIDPREFIX, user_rid);
 855         key.dptr = keystr;
 856         key.dsize = strlen (keystr) + 1;
 857
 858         /* add the reference */
 859         if (tdb_store(pwd_tdb, key, data, flag) != TDB_SUCCESS) {
 860                 DEBUG(0, ("Unable to modify TDB passwd !"));
 861                 DEBUGADD(0, (" Error: %s\n", tdb_errorstr(pwd_tdb)));
 862                 DEBUGADD(0, (" occured while storing the RID index (%s)\n", keystr));
 863                 ret = False;
 864                 goto done;
 865         }
 866
 867 done:
 868         /* cleanup */
 869         tdb_close (pwd_tdb);
 870         SAFE_FREE(buf);
 871
 872         return (ret);
 873 }
 874
 875 /***************************************************************************
 876  Modifies an existing SAM_ACCOUNT
 877 ****************************************************************************/
 878
 879 static NTSTATUS tdbsam_update_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd)
 880 {
 881         if (tdb_update_sam(my_methods, newpwd, TDB_MODIFY))
 882                 return NT_STATUS_OK;
 883         else
 884                 return NT_STATUS_UNSUCCESSFUL;
 885 }
 886
 887 /***************************************************************************
 888  Adds an existing SAM_ACCOUNT
 889 ****************************************************************************/
 890
 891 static NTSTATUS tdbsam_add_sam_account (struct pdb_methods *my_methods, SAM_ACCOUNT *newpwd)
 892 {
 893         if (tdb_update_sam(my_methods, newpwd, TDB_INSERT))
 894                 return NT_STATUS_OK;
 895         else
 896                 return NT_STATUS_UNSUCCESSFUL;
 897 }
 898
 899 static NTSTATUS tdbsam_getgrsid(struct pdb_methods *methods, GROUP_MAP *map,
 900                                 DOM_SID sid, BOOL with_priv)
 901 {
 902         return get_group_map_from_sid(sid, map, with_priv) ?
 903                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 904 }
 905
 906 static NTSTATUS tdbsam_getgrgid(struct pdb_methods *methods, GROUP_MAP *map,
 907                                 gid_t gid, BOOL with_priv)
 908 {
 909         return get_group_map_from_gid(gid, map, with_priv) ?
 910                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 911 }
 912
 913 static NTSTATUS tdbsam_getgrnam(struct pdb_methods *methods, GROUP_MAP *map,
 914                                 char *name, BOOL with_priv)
 915 {
 916         return get_group_map_from_ntname(name, map, with_priv) ?
 917                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 918 }
 919
 920 static NTSTATUS tdbsam_add_group_mapping_entry(struct pdb_methods *methods,
 921                                                GROUP_MAP *map)
 922 {
 923         return add_mapping_entry(map, TDB_INSERT) ?
 924                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 925 }
 926
 927 static NTSTATUS tdbsam_update_group_mapping_entry(struct pdb_methods *methods,
 928                                                   GROUP_MAP *map)
 929 {
 930         return add_mapping_entry(map, TDB_REPLACE) ?
 931                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 932 }
 933
 934 static NTSTATUS tdbsam_delete_group_mapping_entry(struct pdb_methods *methods,
 935                                                   DOM_SID sid)
 936 {
 937         return group_map_remove(sid) ?
 938                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 939 }
 940
 941 static NTSTATUS tdbsam_enum_group_mapping(struct pdb_methods *methods,
 942                                           enum SID_NAME_USE sid_name_use,
 943                                           GROUP_MAP **rmap, int *num_entries,
 944                                           BOOL unix_only, BOOL with_priv)
 945 {
 946         return enum_group_mapping(sid_name_use, rmap, num_entries, unix_only,
 947                                   with_priv) ?
 948                 NT_STATUS_OK : NT_STATUS_UNSUCCESSFUL;
 949 }
 950
 951 static void free_private_data(void **vp)
 952 {
 953         struct tdbsam_privates **tdb_state = (struct tdbsam_privates **)vp;
 954         close_tdb(*tdb_state);
 955         *tdb_state = NULL;
 956
 957         /* No need to free any further, as it is talloc()ed */
 958 }
 959
 960
 961 NTSTATUS pdb_init_tdbsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
 962 {
 963         NTSTATUS nt_status;
 964         struct tdbsam_privates *tdb_state;
 965
 966 #if 0 /* when made a module use this */
 967         tdbsam_debug_level = debug_add_class("tdbsam");
 968         if(tdbsam_debug_level == -1) {
 969                 tdbsam_debug_level = DBGC_ALL;
 970                 DEBUG(0, ("tdbsam: Couldn't register custom debugging class!\n"));
 971         }
 972 #endif
 973
 974         if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods(pdb_context->mem_ctx, pdb_method))) {
 975                 return nt_status;
 976         }
 977
 978         (*pdb_method)->name = "tdbsam";
 979
 980         (*pdb_method)->setsampwent = tdbsam_setsampwent;
 981         (*pdb_method)->endsampwent = tdbsam_endsampwent;
 982         (*pdb_method)->getsampwent = tdbsam_getsampwent;
 983         (*pdb_method)->getsampwnam = tdbsam_getsampwnam;
 984         (*pdb_method)->getsampwsid = tdbsam_getsampwsid;
 985         (*pdb_method)->add_sam_account = tdbsam_add_sam_account;
 986         (*pdb_method)->update_sam_account = tdbsam_update_sam_account;
 987         (*pdb_method)->delete_sam_account = tdbsam_delete_sam_account;
 988         (*pdb_method)->getgrsid = tdbsam_getgrsid;
 989         (*pdb_method)->getgrgid = tdbsam_getgrgid;
 990         (*pdb_method)->getgrnam = tdbsam_getgrnam;
 991         (*pdb_method)->add_group_mapping_entry = tdbsam_add_group_mapping_entry;
 992         (*pdb_method)->update_group_mapping_entry = tdbsam_update_group_mapping_entry;
 993         (*pdb_method)->delete_group_mapping_entry = tdbsam_delete_group_mapping_entry;
 994         (*pdb_method)->enum_group_mapping = tdbsam_enum_group_mapping;
 995
 996         tdb_state = talloc_zero(pdb_context->mem_ctx, sizeof(struct tdbsam_privates));
 997
 998         if (!tdb_state) {
 999                 DEBUG(0, ("talloc() failed for tdbsam private_data!\n"));
1000                 return NT_STATUS_NO_MEMORY;
1001         }
1002
1003         if (location) {
1004                 tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, location);
1005         } else {
1006                 pstring tdbfile;
1007                 get_private_directory(tdbfile);
1008                 pstrcat(tdbfile, "/");
1009                 pstrcat(tdbfile, PASSDB_FILE_NAME);
1010                 tdb_state->tdbsam_location = talloc_strdup(pdb_context->mem_ctx, tdbfile);
1011         }
1012
1013         tdb_state->algorithmic_rids = True;
1014
1015         (*pdb_method)->private_data = tdb_state;
1016
1017         (*pdb_method)->free_private_data = free_private_data;
1018
1019         return NT_STATUS_OK;
1020 }
1021
1022 NTSTATUS pdb_init_tdbsam_nua(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1023 {
1024         NTSTATUS nt_status;
1025         struct tdbsam_privates *tdb_state;
1026         uint32 low_nua_uid, high_nua_uid;
1027
1028         if (!NT_STATUS_IS_OK(nt_status = pdb_init_tdbsam(pdb_context, pdb_method, location))) {
1029                 return nt_status;
1030         }
1031
1032         (*pdb_method)->name = "tdbsam_nua";
1033
1034         tdb_state = (*pdb_method)->private_data;
1035
1036         tdb_state->permit_non_unix_accounts = True;
1037
1038         if (!lp_non_unix_account_range(&low_nua_uid, &high_nua_uid)) {
1039                 DEBUG(0, ("cannot use tdbsam_nua without 'non unix account range' in smb.conf!\n"));
1040                 return NT_STATUS_UNSUCCESSFUL;
1041         }
1042
1043         tdb_state->low_nua_rid=fallback_pdb_uid_to_user_rid(low_nua_uid);
1044
1045         tdb_state->high_nua_rid=fallback_pdb_uid_to_user_rid(high_nua_uid);
1046
1047         return NT_STATUS_OK;
1048 }
1049
1050
1051 #else
1052
1053 NTSTATUS pdb_init_tdbsam(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1054 {
1055         DEBUG(0, ("tdbsam not compiled in!\n"));
1056         return NT_STATUS_UNSUCCESSFUL;
1057 }
1058
1059 NTSTATUS pdb_init_tdbsam_nua(PDB_CONTEXT *pdb_context, PDB_METHODS **pdb_method, const char *location)
1060 {
1061         DEBUG(0, ("tdbsam_nua not compiled in!\n"));
1062         return NT_STATUS_UNSUCCESSFUL;
1063 }
1064
1065
1066 #endif