source3/passdb/passdb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Password and authentication handling
   4    Copyright (C) Jeremy Allison                 1996-2001
   5    Copyright (C) Luke Kenneth Casson Leighton   1996-1998
   6    Copyright (C) Gerald (Jerry) Carter          2000-2001
   7    Copyright (C) Andrew Bartlett                2001-2002
   8    Copyright (C) Simo Sorce                     2003
   9
  10    This program is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 2 of the License, or
  13    (at your option) any later version.
  14
  15    This program is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with this program; if not, write to the Free Software
  22    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  23 */
  24
  25 #include "includes.h"
  26
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_PASSDB
  29
  30 /******************************************************************
  31  get the default domain/netbios name to be used when
  32  testing authentication.  For example, if you connect
  33  to a Windows member server using a bogus domain name, the
  34  Windows box will map the BOGUS\user to DOMAIN\user.  A
  35  standalone box will map to WKS\user.
  36 ******************************************************************/
  37
  38 const char *get_default_sam_name(void)
  39 {
  40         /* standalone servers can only use the local netbios name */
  41         if ( lp_server_role() == ROLE_STANDALONE )
  42                 return global_myname();
  43
  44         /* Windows domain members default to the DOMAIN
  45            name when not specified */
  46         return lp_workgroup();
  47 }
  48
  49 /************************************************************
  50  Fill the SAM_ACCOUNT with default values.
  51  ***********************************************************/
  52
  53 void pdb_fill_default_sam(SAM_ACCOUNT *user)
  54 {
  55         ZERO_STRUCT(user->private); /* Don't touch the talloc context */
  56
  57         /* no initial methods */
  58         user->methods = NULL;
  59
  60         /* Don't change these timestamp settings without a good reason.
  61            They are important for NT member server compatibility. */
  62
  63         user->private.logon_time            = (time_t)0;
  64         user->private.pass_last_set_time    = (time_t)0;
  65         user->private.pass_can_change_time  = (time_t)0;
  66         user->private.logoff_time           =
  67         user->private.kickoff_time          =
  68         user->private.pass_must_change_time = get_time_t_max();
  69         user->private.fields_present        = 0x00ffffff;
  70         user->private.logon_divs = 168;         /* hours per week */
  71         user->private.hours_len = 21;           /* 21 times 8 bits = 168 */
  72         memset(user->private.hours, 0xff, user->private.hours_len); /* available at all hours */
  73         user->private.bad_password_count = 0;
  74         user->private.logon_count = 0;
  75         user->private.unknown_6 = 0x000004ec; /* don't know */
  76
  77         /* Some parts of samba strlen their pdb_get...() returns,
  78            so this keeps the interface unchanged for now. */
  79
  80         user->private.username = "";
  81         user->private.domain = "";
  82         user->private.nt_username = "";
  83         user->private.full_name = "";
  84         user->private.home_dir = "";
  85         user->private.logon_script = "";
  86         user->private.profile_path = "";
  87         user->private.acct_desc = "";
  88         user->private.workstations = "";
  89         user->private.unknown_str = "";
  90         user->private.munged_dial = "";
  91
  92         user->private.plaintext_pw = NULL;
  93
  94         /*
  95            Unless we know otherwise have a Account Control Bit
  96            value of 'normal user'.  This helps User Manager, which
  97            asks for a filtered list of users.
  98         */
  99
 100         user->private.acct_ctrl = ACB_NORMAL;
 101 }
 102
 103 static void destroy_pdb_talloc(SAM_ACCOUNT **user)
 104 {
 105         if (*user) {
 106                 data_blob_clear_free(&((*user)->private.lm_pw));
 107                 data_blob_clear_free(&((*user)->private.nt_pw));
 108
 109                 if((*user)->private.plaintext_pw!=NULL)
 110                         memset((*user)->private.plaintext_pw,'\0',strlen((*user)->private.plaintext_pw));
 111                 talloc_destroy((*user)->mem_ctx);
 112                 *user = NULL;
 113         }
 114 }
 115
 116
 117 /**********************************************************************
 118  Allocates memory and initialises a struct sam_passwd on supplied mem_ctx.
 119 ***********************************************************************/
 120
 121 NTSTATUS pdb_init_sam_talloc(TALLOC_CTX *mem_ctx, SAM_ACCOUNT **user)
 122 {
 123         if (*user != NULL) {
 124                 DEBUG(0,("pdb_init_sam_talloc: SAM_ACCOUNT was non NULL\n"));
 125 #if 0
 126                 smb_panic("non-NULL pointer passed to pdb_init_sam\n");
 127 #endif
 128                 return NT_STATUS_UNSUCCESSFUL;
 129         }
 130
 131         if (!mem_ctx) {
 132                 DEBUG(0,("pdb_init_sam_talloc: mem_ctx was NULL!\n"));
 133                 return NT_STATUS_UNSUCCESSFUL;
 134         }
 135
 136         *user=(SAM_ACCOUNT *)talloc(mem_ctx, sizeof(SAM_ACCOUNT));
 137
 138         if (*user==NULL) {
 139                 DEBUG(0,("pdb_init_sam_talloc: error while allocating memory\n"));
 140                 return NT_STATUS_NO_MEMORY;
 141         }
 142
 143         (*user)->mem_ctx = mem_ctx;
 144
 145         (*user)->free_fn = NULL;
 146
 147         pdb_fill_default_sam(*user);
 148
 149         return NT_STATUS_OK;
 150 }
 151
 152
 153 /*************************************************************
 154  Allocates memory and initialises a struct sam_passwd.
 155  ************************************************************/
 156
 157 NTSTATUS pdb_init_sam(SAM_ACCOUNT **user)
 158 {
 159         TALLOC_CTX *mem_ctx;
 160         NTSTATUS nt_status;
 161
 162         mem_ctx = talloc_init("passdb internal SAM_ACCOUNT allocation");
 163
 164         if (!mem_ctx) {
 165                 DEBUG(0,("pdb_init_sam: error while doing talloc_init()\n"));
 166                 return NT_STATUS_NO_MEMORY;
 167         }
 168
 169         if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_talloc(mem_ctx, user))) {
 170                 talloc_destroy(mem_ctx);
 171                 return nt_status;
 172         }
 173
 174         (*user)->free_fn = destroy_pdb_talloc;
 175
 176         return NT_STATUS_OK;
 177 }
 178
 179 /**************************************************************************
 180  * This function will take care of all the steps needed to correctly
 181  * allocate and set the user SID, please do use this function to create new
 182  * users, messing with SIDs is not good.
 183  *
 184  * account_data must be provided initialized, pwd may be null.
 185  *                                                                      SSS
 186  ***************************************************************************/
 187
 188 static NTSTATUS pdb_set_sam_sids(SAM_ACCOUNT *account_data, const struct passwd *pwd)
 189 {
 190         const char *guest_account = lp_guestaccount();
 191         GROUP_MAP map;
 192         BOOL ret;
 193
 194         if (!account_data || !pwd) {
 195                 return NT_STATUS_INVALID_PARAMETER;
 196         }
 197
 198         /* this is a hack this thing should not be set
 199            this way --SSS */
 200         if (!(guest_account && *guest_account)) {
 201                 DEBUG(1, ("NULL guest account!?!?\n"));
 202                 return NT_STATUS_UNSUCCESSFUL;
 203         } else {
 204                 /* Ensure this *must* be set right */
 205                 if (strcmp(pwd->pw_name, guest_account) == 0) {
 206                         if (!pdb_set_user_sid_from_rid(account_data, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
 207                                 return NT_STATUS_UNSUCCESSFUL;
 208                         }
 209                         if (!pdb_set_group_sid_from_rid(account_data, DOMAIN_GROUP_RID_GUESTS, PDB_DEFAULT)) {
 210                                 return NT_STATUS_UNSUCCESSFUL;
 211                         }
 212                         return NT_STATUS_OK;
 213                 }
 214         }
 215
 216         if (!pdb_set_user_sid_from_rid(account_data, fallback_pdb_uid_to_user_rid(pwd->pw_uid), PDB_SET)) {
 217                 DEBUG(0,("Can't set User SID from RID!\n"));
 218                 return NT_STATUS_INVALID_PARAMETER;
 219         }
 220
 221         /* call the mapping code here */
 222         become_root();
 223         ret = pdb_getgrgid(&map, pwd->pw_gid);
 224         unbecome_root();
 225
 226         if( ret ) {
 227                 if (!pdb_set_group_sid(account_data, &map.sid, PDB_SET)){
 228                         DEBUG(0,("Can't set Group SID!\n"));
 229                         return NT_STATUS_INVALID_PARAMETER;
 230                 }
 231         }
 232         else {
 233                 if (!pdb_set_group_sid_from_rid(account_data, pdb_gid_to_group_rid(pwd->pw_gid), PDB_SET)) {
 234                         DEBUG(0,("Can't set Group SID\n"));
 235                         return NT_STATUS_INVALID_PARAMETER;
 236                 }
 237         }
 238
 239         return NT_STATUS_OK;
 240 }
 241
 242 /*************************************************************
 243  Initialises a struct sam_passwd with sane values.
 244  ************************************************************/
 245
 246 NTSTATUS pdb_fill_sam_pw(SAM_ACCOUNT *sam_account, const struct passwd *pwd)
 247 {
 248         NTSTATUS ret;
 249
 250         if (!pwd) {
 251                 return NT_STATUS_UNSUCCESSFUL;
 252         }
 253
 254         pdb_fill_default_sam(sam_account);
 255
 256         pdb_set_username(sam_account, pwd->pw_name, PDB_SET);
 257         pdb_set_fullname(sam_account, pwd->pw_gecos, PDB_SET);
 258
 259         pdb_set_unix_homedir(sam_account, pwd->pw_dir, PDB_SET);
 260
 261         pdb_set_domain (sam_account, get_global_sam_name(), PDB_DEFAULT);
 262
 263         /* When we get a proper uid -> SID and SID -> uid allocation
 264            mechinism, we should call it here.
 265
 266            We can't just set this to 0 or allow it only to be filled
 267            in when added to the backend, because the user's SID
 268            may already be in security descriptors etc.
 269
 270            -- abartlet 11-May-02
 271         */
 272
 273         ret = pdb_set_sam_sids(sam_account, pwd);
 274         if (!NT_STATUS_IS_OK(ret)) return ret;
 275
 276         /* check if this is a user account or a machine account */
 277         if (pwd->pw_name[strlen(pwd->pw_name)-1] != '$')
 278         {
 279                 pdb_set_profile_path(sam_account,
 280                                      talloc_sub_specified((sam_account)->mem_ctx,
 281                                                             lp_logon_path(),
 282                                                             pwd->pw_name, global_myname(),
 283                                                             pwd->pw_uid, pwd->pw_gid),
 284                                      PDB_DEFAULT);
 285
 286                 pdb_set_homedir(sam_account,
 287                                 talloc_sub_specified((sam_account)->mem_ctx,
 288                                                        lp_logon_home(),
 289                                                        pwd->pw_name, global_myname(),
 290                                                        pwd->pw_uid, pwd->pw_gid),
 291                                 PDB_DEFAULT);
 292
 293                 pdb_set_dir_drive(sam_account,
 294                                   talloc_sub_specified((sam_account)->mem_ctx,
 295                                                          lp_logon_drive(),
 296                                                          pwd->pw_name, global_myname(),
 297                                                          pwd->pw_uid, pwd->pw_gid),
 298                                   PDB_DEFAULT);
 299
 300                 pdb_set_logon_script(sam_account,
 301                                      talloc_sub_specified((sam_account)->mem_ctx,
 302                                                             lp_logon_script(),
 303                                                             pwd->pw_name, global_myname(),
 304                                                             pwd->pw_uid, pwd->pw_gid),
 305                                      PDB_DEFAULT);
 306                 if (!pdb_set_acct_ctrl(sam_account, ACB_NORMAL, PDB_DEFAULT)) {
 307                         DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n", pwd->pw_name));
 308                         return NT_STATUS_UNSUCCESSFUL;
 309                 }
 310         } else {
 311                 if (!pdb_set_acct_ctrl(sam_account, ACB_WSTRUST, PDB_DEFAULT)) {
 312                         DEBUG(1, ("Failed to set 'trusted workstation account' flags for user %s.\n", pwd->pw_name));
 313                         return NT_STATUS_UNSUCCESSFUL;
 314                 }
 315         }
 316         return NT_STATUS_OK;
 317 }
 318
 319
 320 /*************************************************************
 321  Initialises a struct sam_passwd with sane values.
 322  ************************************************************/
 323
 324 NTSTATUS pdb_init_sam_pw(SAM_ACCOUNT **new_sam_acct, const struct passwd *pwd)
 325 {
 326         NTSTATUS nt_status;
 327
 328         if (!pwd) {
 329                 new_sam_acct = NULL;
 330                 return NT_STATUS_INVALID_PARAMETER;
 331         }
 332
 333         if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam(new_sam_acct))) {
 334                 new_sam_acct = NULL;
 335                 return nt_status;
 336         }
 337
 338         if (!NT_STATUS_IS_OK(nt_status = pdb_fill_sam_pw(*new_sam_acct, pwd))) {
 339                 pdb_free_sam(new_sam_acct);
 340                 new_sam_acct = NULL;
 341                 return nt_status;
 342         }
 343
 344         return NT_STATUS_OK;
 345 }
 346
 347
 348 /*************************************************************
 349  Initialises a SAM_ACCOUNT ready to add a new account, based
 350  on the UNIX user.  Pass in a RID if you have one
 351  ************************************************************/
 352
 353 NTSTATUS pdb_init_sam_new(SAM_ACCOUNT **new_sam_acct, const char *username,
 354                           uint32 rid)
 355 {
 356         NTSTATUS        nt_status = NT_STATUS_NO_MEMORY;
 357         struct passwd   *pwd;
 358         BOOL            ret;
 359
 360         pwd = Get_Pwnam(username);
 361
 362         if (!pwd)
 363                 return NT_STATUS_NO_SUCH_USER;
 364
 365         if (!NT_STATUS_IS_OK(nt_status = pdb_init_sam_pw(new_sam_acct, pwd))) {
 366                 *new_sam_acct = NULL;
 367                 return nt_status;
 368         }
 369
 370         /* see if we need to generate a new rid using the 2.2 algorithm */
 371         if ( rid == 0 && lp_enable_rid_algorithm() ) {
 372                 DEBUG(10,("pdb_init_sam_new: no RID specified.  Generating one via old algorithm\n"));
 373                 rid = fallback_pdb_uid_to_user_rid(pwd->pw_uid);
 374         }
 375
 376         /* set the new SID */
 377
 378         ret = pdb_set_user_sid_from_rid( *new_sam_acct, rid, PDB_SET );
 379
 380         return (ret ? NT_STATUS_OK : NT_STATUS_NO_SUCH_USER);
 381 }
 382
 383
 384 /**
 385  * Free the contets of the SAM_ACCOUNT, but not the structure.
 386  *
 387  * Also wipes the LM and NT hashes and plaintext password from
 388  * memory.
 389  *
 390  * @param user SAM_ACCOUNT to free members of.
 391  **/
 392
 393 static void pdb_free_sam_contents(SAM_ACCOUNT *user)
 394 {
 395
 396         /* Kill off sensitive data.  Free()ed by the
 397            talloc mechinism */
 398
 399         data_blob_clear_free(&(user->private.lm_pw));
 400         data_blob_clear_free(&(user->private.nt_pw));
 401         if (user->private.plaintext_pw!=NULL)
 402                 memset(user->private.plaintext_pw,'\0',strlen(user->private.plaintext_pw));
 403
 404         if (user->private.backend_private_data && user->private.backend_private_data_free_fn) {
 405                 user->private.backend_private_data_free_fn(&user->private.backend_private_data);
 406         }
 407 }
 408
 409
 410 /************************************************************
 411  Reset the SAM_ACCOUNT and free the NT/LM hashes.
 412  ***********************************************************/
 413
 414 NTSTATUS pdb_reset_sam(SAM_ACCOUNT *user)
 415 {
 416         if (user == NULL) {
 417                 DEBUG(0,("pdb_reset_sam: SAM_ACCOUNT was NULL\n"));
 418 #if 0
 419                 smb_panic("NULL pointer passed to pdb_free_sam\n");
 420 #endif
 421                 return NT_STATUS_UNSUCCESSFUL;
 422         }
 423
 424         pdb_free_sam_contents(user);
 425
 426         pdb_fill_default_sam(user);
 427
 428         return NT_STATUS_OK;
 429 }
 430
 431
 432 /************************************************************
 433  Free the SAM_ACCOUNT and the member pointers.
 434  ***********************************************************/
 435
 436 NTSTATUS pdb_free_sam(SAM_ACCOUNT **user)
 437 {
 438         if (*user == NULL) {
 439                 DEBUG(0,("pdb_free_sam: SAM_ACCOUNT was NULL\n"));
 440 #if 0
 441                 smb_panic("NULL pointer passed to pdb_free_sam\n");
 442 #endif
 443                 return NT_STATUS_UNSUCCESSFUL;
 444         }
 445
 446         pdb_free_sam_contents(*user);
 447
 448         if ((*user)->free_fn) {
 449                 (*user)->free_fn(user);
 450         }
 451
 452         return NT_STATUS_OK;
 453 }
 454
 455 /**********************************************************
 456  Encode the account control bits into a string.
 457  length = length of string to encode into (including terminating
 458  null). length *MUST BE MORE THAN 2* !
 459  **********************************************************/
 460
 461 char *pdb_encode_acct_ctrl(uint16 acct_ctrl, size_t length)
 462 {
 463         static fstring acct_str;
 464
 465         size_t i = 0;
 466
 467         SMB_ASSERT(length <= sizeof(acct_str));
 468
 469         acct_str[i++] = '[';
 470
 471         if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N';
 472         if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D';
 473         if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H';
 474         if (acct_ctrl & ACB_TEMPDUP  ) acct_str[i++] = 'T';
 475         if (acct_ctrl & ACB_NORMAL   ) acct_str[i++] = 'U';
 476         if (acct_ctrl & ACB_MNS      ) acct_str[i++] = 'M';
 477         if (acct_ctrl & ACB_WSTRUST  ) acct_str[i++] = 'W';
 478         if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S';
 479         if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L';
 480         if (acct_ctrl & ACB_PWNOEXP  ) acct_str[i++] = 'X';
 481         if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I';
 482
 483         for ( ; i < length - 2 ; i++ )
 484                 acct_str[i] = ' ';
 485
 486         i = length - 2;
 487         acct_str[i++] = ']';
 488         acct_str[i++] = '\0';
 489
 490         return acct_str;
 491 }
 492
 493 /**********************************************************
 494  Decode the account control bits from a string.
 495  **********************************************************/
 496
 497 uint16 pdb_decode_acct_ctrl(const char *p)
 498 {
 499         uint16 acct_ctrl = 0;
 500         BOOL finished = False;
 501
 502         /*
 503          * Check if the account type bits have been encoded after the
 504          * NT password (in the form [NDHTUWSLXI]).
 505          */
 506
 507         if (*p != '[')
 508                 return 0;
 509
 510         for (p++; *p && !finished; p++) {
 511                 switch (*p) {
 512                         case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
 513                         case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
 514                         case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
 515                         case 'T': { acct_ctrl |= ACB_TEMPDUP  ; break; /* 'T'emp account. */ }
 516                         case 'U': { acct_ctrl |= ACB_NORMAL   ; break; /* 'U'ser account (normal). */ }
 517                         case 'M': { acct_ctrl |= ACB_MNS      ; break; /* 'M'NS logon user account. What is this ? */ }
 518                         case 'W': { acct_ctrl |= ACB_WSTRUST  ; break; /* 'W'orkstation account. */ }
 519                         case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
 520                         case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
 521                         case 'X': { acct_ctrl |= ACB_PWNOEXP  ; break; /* No 'X'piry on password */ }
 522                         case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
 523             case ' ': { break; }
 524                         case ':':
 525                         case '\n':
 526                         case '\0':
 527                         case ']':
 528                         default:  { finished = True; }
 529                 }
 530         }
 531
 532         return acct_ctrl;
 533 }
 534
 535 /*************************************************************
 536  Routine to set 32 hex password characters from a 16 byte array.
 537 **************************************************************/
 538
 539 void pdb_sethexpwd(char *p, const unsigned char *pwd, uint16 acct_ctrl)
 540 {
 541         if (pwd != NULL) {
 542                 int i;
 543                 for (i = 0; i < 16; i++)
 544                         slprintf(&p[i*2], 3, "%02X", pwd[i]);
 545         } else {
 546                 if (acct_ctrl & ACB_PWNOTREQ)
 547                         safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
 548                 else
 549                         safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
 550         }
 551 }
 552
 553 /*************************************************************
 554  Routine to get the 32 hex characters and turn them
 555  into a 16 byte array.
 556 **************************************************************/
 557
 558 BOOL pdb_gethexpwd(const char *p, unsigned char *pwd)
 559 {
 560         int i;
 561         unsigned char   lonybble, hinybble;
 562         const char      *hexchars = "0123456789ABCDEF";
 563         char           *p1, *p2;
 564
 565         if (!p)
 566                 return (False);
 567
 568         for (i = 0; i < 32; i += 2) {
 569                 hinybble = toupper(p[i]);
 570                 lonybble = toupper(p[i + 1]);
 571
 572                 p1 = strchr(hexchars, hinybble);
 573                 p2 = strchr(hexchars, lonybble);
 574
 575                 if (!p1 || !p2)
 576                         return (False);
 577
 578                 hinybble = PTR_DIFF(p1, hexchars);
 579                 lonybble = PTR_DIFF(p2, hexchars);
 580
 581                 pwd[i / 2] = (hinybble << 4) | lonybble;
 582         }
 583         return (True);
 584 }
 585
 586 int algorithmic_rid_base(void)
 587 {
 588         static int rid_offset = 0;
 589
 590         if (rid_offset != 0)
 591                 return rid_offset;
 592
 593         rid_offset = lp_algorithmic_rid_base();
 594
 595         if (rid_offset < BASE_RID) {
 596                 /* Try to prevent admin foot-shooting, we can't put algorithmic
 597                    rids below 1000, that's the 'well known RIDs' on NT */
 598                 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
 599                 rid_offset = BASE_RID;
 600         }
 601         if (rid_offset & 1) {
 602                 DEBUG(0, ("algorithmic rid base must be even\n"));
 603                 rid_offset += 1;
 604         }
 605         return rid_offset;
 606 }
 607
 608 /*******************************************************************
 609  Converts NT user RID to a UNIX uid.
 610  ********************************************************************/
 611
 612 uid_t fallback_pdb_user_rid_to_uid(uint32 user_rid)
 613 {
 614         int rid_offset = algorithmic_rid_base();
 615         return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 616 }
 617
 618 /*******************************************************************
 619  converts UNIX uid to an NT User RID.
 620  ********************************************************************/
 621
 622 uint32 fallback_pdb_uid_to_user_rid(uid_t uid)
 623 {
 624         int rid_offset = algorithmic_rid_base();
 625         return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
 626 }
 627
 628 /*******************************************************************
 629  Converts NT group RID to a UNIX gid.
 630  ********************************************************************/
 631
 632 gid_t pdb_group_rid_to_gid(uint32 group_rid)
 633 {
 634         int rid_offset = algorithmic_rid_base();
 635         return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 636 }
 637
 638 /*******************************************************************
 639  converts NT Group RID to a UNIX uid.
 640
 641  warning: you must not call that function only
 642  you must do a call to the group mapping first.
 643  there is not anymore a direct link between the gid and the rid.
 644  ********************************************************************/
 645
 646 uint32 pdb_gid_to_group_rid(gid_t gid)
 647 {
 648         int rid_offset = algorithmic_rid_base();
 649         return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
 650 }
 651
 652 /*******************************************************************
 653  Decides if a RID is a well known RID.
 654  ********************************************************************/
 655
 656 static BOOL pdb_rid_is_well_known(uint32 rid)
 657 {
 658         /* Not using rid_offset here, because this is the actual
 659            NT fixed value (1000) */
 660
 661         return (rid < BASE_RID);
 662 }
 663
 664 /*******************************************************************
 665  Decides if a RID is a user or group RID.
 666  ********************************************************************/
 667
 668 BOOL fallback_pdb_rid_is_user(uint32 rid)
 669 {
 670   /* lkcl i understand that NT attaches an enumeration to a RID
 671    * such that it can be identified as either a user, group etc
 672    * type.  there are 5 such categories, and they are documented.
 673    */
 674         /* However, they are not in the RID, just somthing you can query
 675            seperatly.  Sorry luke :-) */
 676
 677    if(pdb_rid_is_well_known(rid)) {
 678       /*
 679        * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
 680        * and DOMAIN_USER_RID_GUEST.
 681        */
 682      if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
 683        return True;
 684    } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
 685      return True;
 686    }
 687    return False;
 688 }
 689
 690 /*******************************************************************
 691  Convert a rid into a name. Used in the lookup SID rpc.
 692  ********************************************************************/
 693
 694 BOOL local_lookup_sid(const DOM_SID *sid, char *name, enum SID_NAME_USE *psid_name_use)
 695 {
 696         uint32 rid;
 697         SAM_ACCOUNT *sam_account = NULL;
 698         GROUP_MAP map;
 699         BOOL ret;
 700
 701         if (!sid_peek_check_rid(get_global_sam_sid(), sid, &rid)){
 702                 DEBUG(0,("local_lookup_sid: sid_peek_check_rid return False! SID: %s\n",
 703                         sid_string_static(&map.sid)));
 704                 return False;
 705         }
 706         *psid_name_use = SID_NAME_UNKNOWN;
 707
 708         DEBUG(5,("local_lookup_sid: looking up RID %u.\n", (unsigned int)rid));
 709
 710         if (rid == DOMAIN_USER_RID_ADMIN) {
 711                 const char **admin_list = lp_admin_users(-1);
 712                 *psid_name_use = SID_NAME_USER;
 713                 if (admin_list) {
 714                         const char *p = *admin_list;
 715                         if(!next_token(&p, name, NULL, sizeof(fstring)))
 716                                 fstrcpy(name, "Administrator");
 717                 } else {
 718                         fstrcpy(name, "Administrator");
 719                 }
 720                 return True;
 721         }
 722
 723         if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
 724                 return False;
 725         }
 726
 727         /* see if the passdb can help us with the name of the user */
 728
 729         /* BEING ROOT BLLOCK */
 730         become_root();
 731         if (pdb_getsampwsid(sam_account, sid)) {
 732                 unbecome_root();                        /* -----> EXIT BECOME_ROOT() */
 733                 fstrcpy(name, pdb_get_username(sam_account));
 734                 *psid_name_use = SID_NAME_USER;
 735
 736                 pdb_free_sam(&sam_account);
 737
 738                 return True;
 739         }
 740         pdb_free_sam(&sam_account);
 741
 742         ret = pdb_getgrsid(&map, *sid);
 743         unbecome_root();
 744         /* END BECOME_ROOT BLOCK */
 745
 746         if ( ret ) {
 747                 if (map.gid!=(gid_t)-1) {
 748                         DEBUG(5,("local_lookup_sid: mapped group %s to gid %u\n", map.nt_name, (unsigned int)map.gid));
 749                 } else {
 750                         DEBUG(5,("local_lookup_sid: mapped group %s to no unix gid.  Returning name.\n", map.nt_name));
 751                 }
 752
 753                 fstrcpy(name, map.nt_name);
 754                 *psid_name_use = map.sid_name_use;
 755                 return True;
 756         }
 757
 758         if (fallback_pdb_rid_is_user(rid)) {
 759                 uid_t uid;
 760                 struct passwd *pw = NULL;
 761
 762                 DEBUG(5, ("assuming RID %u is a user\n", (unsigned)rid));
 763
 764                 uid = fallback_pdb_user_rid_to_uid(rid);
 765                 pw = sys_getpwuid( uid );
 766
 767                 DEBUG(5,("local_lookup_sid: looking up uid %u %s\n", (unsigned int)uid,
 768                          pw ? "succeeded" : "failed" ));
 769
 770                 if ( !pw )
 771                         fstr_sprintf(name, "unix_user.%u", (unsigned int)uid);
 772                 else
 773                         fstrcpy( name, pw->pw_name );
 774
 775                 DEBUG(5,("local_lookup_sid: found user %s for rid %u\n", name,
 776                          (unsigned int)rid ));
 777
 778                 *psid_name_use = SID_NAME_USER;
 779
 780                 return ( pw != NULL );
 781         } else {
 782                 gid_t gid;
 783                 struct group *gr;
 784
 785                 DEBUG(5, ("assuming RID %u is a group\n", (unsigned)rid));
 786
 787                 gid = pdb_group_rid_to_gid(rid);
 788                 gr = getgrgid(gid);
 789
 790                 *psid_name_use = SID_NAME_ALIAS;
 791
 792                 DEBUG(5,("local_lookup_sid: looking up gid %u %s\n", (unsigned int)gid,
 793                          gr ? "succeeded" : "failed" ));
 794
 795                 if( !gr )
 796                         fstr_sprintf(name, "unix_group.%u", (unsigned int)gid);
 797                 else
 798                         fstrcpy( name, gr->gr_name);
 799
 800                 DEBUG(5,("local_lookup_sid: found group %s for rid %u\n", name,
 801                          (unsigned int)rid ));
 802
 803                 /* assume fallback groups aer domain global groups */
 804
 805                 *psid_name_use = SID_NAME_DOM_GRP;
 806
 807                 return ( gr != NULL );
 808         }
 809 }
 810
 811 /*******************************************************************
 812  Convert a name into a SID. Used in the lookup name rpc.
 813  ********************************************************************/
 814
 815 BOOL local_lookup_name(const char *c_user, DOM_SID *psid, enum SID_NAME_USE *psid_name_use)
 816 {
 817         DOM_SID local_sid;
 818         DOM_SID sid;
 819         fstring user;
 820         SAM_ACCOUNT *sam_account = NULL;
 821         struct group *grp;
 822         GROUP_MAP map;
 823
 824         *psid_name_use = SID_NAME_UNKNOWN;
 825
 826         /*
 827          * user may be quoted a const string, and map_username and
 828          * friends can modify it. Make a modifiable copy. JRA.
 829          */
 830
 831         fstrcpy(user, c_user);
 832
 833         sid_copy(&local_sid, get_global_sam_sid());
 834
 835         if (map_name_to_wellknown_sid(&sid, psid_name_use, user)){
 836                 fstring sid_str;
 837                 sid_copy( psid, &sid);
 838                 sid_to_string(sid_str, &sid);
 839                 DEBUG(10,("lookup_name: name %s = SID %s, type = %u\n", user, sid_str,
 840                         (unsigned int)*psid_name_use ));
 841                 return True;
 842         }
 843
 844         (void)map_username(user);
 845
 846         if (!NT_STATUS_IS_OK(pdb_init_sam(&sam_account))) {
 847                 return False;
 848         }
 849
 850         /* BEGIN ROOT BLOCK */
 851
 852         become_root();
 853         if (pdb_getsampwnam(sam_account, user)) {
 854                 unbecome_root();
 855                 sid_copy(psid, pdb_get_user_sid(sam_account));
 856                 *psid_name_use = SID_NAME_USER;
 857
 858                 pdb_free_sam(&sam_account);
 859                 return True;
 860         }
 861
 862         pdb_free_sam(&sam_account);
 863
 864         /*
 865          * Maybe it was a group ?
 866          */
 867
 868         /* check if it's a mapped group */
 869         if (pdb_getgrnam(&map, user)) {
 870                 /* yes it's a mapped group */
 871                 sid_copy(&local_sid, &map.sid);
 872                 *psid_name_use = map.sid_name_use;
 873         } else {
 874                 /* it's not a mapped group */
 875                 grp = getgrnam(user);
 876                 if(!grp) {
 877                         unbecome_root();                /* ---> exit form block */
 878                         return False;
 879                 }
 880
 881                 /*
 882                  *check if it's mapped, if it is reply it doesn't exist
 883                  *
 884                  * that's to prevent this case:
 885                  *
 886                  * unix group ug is mapped to nt group ng
 887                  * someone does a lookup on ug
 888                  * we must not reply as it doesn't "exist" anymore
 889                  * for NT. For NT only ng exists.
 890                  * JFM, 30/11/2001
 891                  */
 892
 893                 if (pdb_getgrgid(&map, grp->gr_gid)){
 894                         unbecome_root();                /* ---> exit form block */
 895                         return False;
 896                 }
 897
 898                 sid_append_rid( &local_sid, pdb_gid_to_group_rid(grp->gr_gid));
 899                 *psid_name_use = SID_NAME_ALIAS;
 900         }
 901         unbecome_root();
 902         /* END ROOT BLOCK */
 903
 904         sid_copy( psid, &local_sid);
 905
 906         return True;
 907 }
 908
 909 /*************************************************************
 910  Change a password entry in the local smbpasswd file.
 911  *************************************************************/
 912
 913 BOOL local_password_change(const char *user_name, int local_flags,
 914                            const char *new_passwd,
 915                            char *err_str, size_t err_str_len,
 916                            char *msg_str, size_t msg_str_len)
 917 {
 918         SAM_ACCOUNT     *sam_pass=NULL;
 919         uint16 other_acb;
 920
 921         *err_str = '\0';
 922         *msg_str = '\0';
 923
 924         /* Get the smb passwd entry for this user */
 925         pdb_init_sam(&sam_pass);
 926
 927         become_root();
 928         if(!pdb_getsampwnam(sam_pass, user_name)) {
 929                 unbecome_root();
 930                 pdb_free_sam(&sam_pass);
 931
 932                 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
 933                         /* Might not exist in /etc/passwd.  Use rid algorithm here */
 934                         if (!NT_STATUS_IS_OK(pdb_init_sam_new(&sam_pass, user_name, 0))) {
 935                                 slprintf(err_str, err_str_len-1, "Failed to initialise SAM_ACCOUNT for user %s.\n", user_name);
 936                                 return False;
 937                         }
 938                 } else {
 939                         slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name);
 940                         return False;
 941                 }
 942         } else {
 943                 unbecome_root();
 944                 /* the entry already existed */
 945                 local_flags &= ~LOCAL_ADD_USER;
 946         }
 947
 948         /* the 'other' acb bits not being changed here */
 949         other_acb =  (pdb_get_acct_ctrl(sam_pass) & (!(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
 950         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 951                 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
 952                         slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
 953                         pdb_free_sam(&sam_pass);
 954                         return False;
 955                 }
 956         } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 957                 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
 958                         slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
 959                         pdb_free_sam(&sam_pass);
 960                         return False;
 961                 }
 962         } else {
 963                 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
 964                         slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name);
 965                         pdb_free_sam(&sam_pass);
 966                         return False;
 967                 }
 968         }
 969
 970         /*
 971          * We are root - just write the new password
 972          * and the valid last change time.
 973          */
 974
 975         if (local_flags & LOCAL_DISABLE_USER) {
 976                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
 977                         slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name);
 978                         pdb_free_sam(&sam_pass);
 979                         return False;
 980                 }
 981         } else if (local_flags & LOCAL_ENABLE_USER) {
 982                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 983                         slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 984                         pdb_free_sam(&sam_pass);
 985                         return False;
 986                 }
 987         }
 988
 989         if (local_flags & LOCAL_SET_NO_PASSWORD) {
 990                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
 991                         slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name);
 992                         pdb_free_sam(&sam_pass);
 993                         return False;
 994                 }
 995         } else if (local_flags & LOCAL_SET_PASSWORD) {
 996                 /*
 997                  * If we're dealing with setting a completely empty user account
 998                  * ie. One with a password of 'XXXX', but not set disabled (like
 999                  * an account created from scratch) then if the old password was
1000                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
1001                  * We remove that as we're giving this user their first password
1002                  * and the decision hasn't really been made to disable them (ie.
1003                  * don't create them disabled). JRA.
1004                  */
1005                 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
1006                         if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
1007                                 slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
1008                                 pdb_free_sam(&sam_pass);
1009                                 return False;
1010                         }
1011                 }
1012                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
1013                         slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name);
1014                         pdb_free_sam(&sam_pass);
1015                         return False;
1016                 }
1017
1018                 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
1019                         slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name);
1020                         pdb_free_sam(&sam_pass);
1021                         return False;
1022                 }
1023         }
1024
1025         if (local_flags & LOCAL_ADD_USER) {
1026                 if (pdb_add_sam_account(sam_pass)) {
1027                         slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
1028                         pdb_free_sam(&sam_pass);
1029                         return True;
1030                 } else {
1031                         slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
1032                         pdb_free_sam(&sam_pass);
1033                         return False;
1034                 }
1035         } else if (local_flags & LOCAL_DELETE_USER) {
1036                 if (!pdb_delete_sam_account(sam_pass)) {
1037                         slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name);
1038                         pdb_free_sam(&sam_pass);
1039                         return False;
1040                 }
1041                 slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name);
1042         } else {
1043                 if(!pdb_update_sam_account(sam_pass)) {
1044                         slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name);
1045                         pdb_free_sam(&sam_pass);
1046                         return False;
1047                 }
1048                 if(local_flags & LOCAL_DISABLE_USER)
1049                         slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name);
1050                 else if (local_flags & LOCAL_ENABLE_USER)
1051                         slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name);
1052                 else if (local_flags & LOCAL_SET_NO_PASSWORD)
1053                         slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name);
1054         }
1055
1056         pdb_free_sam(&sam_pass);
1057         return True;
1058 }
1059
1060 /****************************************************************************
1061  Convert a uid to SID - algorithmic.
1062 ****************************************************************************/
1063
1064 DOM_SID *algorithmic_uid_to_sid(DOM_SID *psid, uid_t uid)
1065 {
1066         if ( !lp_enable_rid_algorithm() )
1067                 return NULL;
1068
1069         DEBUG(8,("algorithmic_uid_to_sid: falling back to RID algorithm\n"));
1070         sid_copy( psid, get_global_sam_sid() );
1071         sid_append_rid( psid, fallback_pdb_uid_to_user_rid(uid) );
1072         DEBUG(10,("algorithmic_uid_to_sid:  uid (%d) -> SID %s.\n",
1073                 (unsigned int)uid, sid_string_static(psid) ));
1074
1075         return psid;
1076 }
1077
1078 /****************************************************************************
1079  Convert a uid to SID - locally.
1080 ****************************************************************************/
1081
1082 DOM_SID *local_uid_to_sid(DOM_SID *psid, uid_t uid)
1083 {
1084         SAM_ACCOUNT *sampw = NULL;
1085         struct passwd *unix_pw;
1086         BOOL ret;
1087
1088         unix_pw = sys_getpwuid( uid );
1089
1090         if ( !unix_pw ) {
1091                 DEBUG(4,("local_uid_to_sid: host has no idea of uid %lu\n", (unsigned long)uid));
1092                 return algorithmic_uid_to_sid( psid, uid);
1093         }
1094
1095         if ( !NT_STATUS_IS_OK(pdb_init_sam(&sampw)) ) {
1096                 DEBUG(0,("local_uid_to_sid: failed to allocate SAM_ACCOUNT object\n"));
1097                 return NULL;
1098         }
1099
1100         become_root();
1101         ret = pdb_getsampwnam( sampw, unix_pw->pw_name );
1102         unbecome_root();
1103
1104         if ( ret )
1105                 sid_copy( psid, pdb_get_user_sid(sampw) );
1106         else {
1107                 DEBUG(4,("local_uid_to_sid: User %s [uid == %lu] has no samba account\n",
1108                         unix_pw->pw_name, (unsigned long)uid));
1109
1110                 return algorithmic_uid_to_sid( psid, uid);
1111         }
1112
1113         DEBUG(10,("local_uid_to_sid:  uid (%d) -> SID %s (%s).\n",
1114                 (unsigned int)uid, sid_string_static(psid), unix_pw->pw_name));
1115
1116         return psid;
1117 }
1118
1119 /****************************************************************************
1120  Convert a SID to uid - locally.
1121 ****************************************************************************/
1122
1123 BOOL local_sid_to_uid(uid_t *puid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
1124 {
1125         SAM_ACCOUNT *sampw = NULL;
1126         struct passwd *unix_pw;
1127         const char *user_name;
1128
1129         *name_type = SID_NAME_UNKNOWN;
1130
1131         /*
1132          * We can only convert to a uid if this is our local
1133          * Domain SID (ie. we are the controling authority).
1134          */
1135         if (!sid_check_is_in_our_domain(psid) ) {
1136                 DEBUG(5,("local_sid_to_uid: this SID (%s) is not from our domain\n", sid_string_static(psid)));
1137                 return False;
1138         }
1139
1140         /* lookup the user account */
1141
1142         if ( !NT_STATUS_IS_OK(pdb_init_sam(&sampw)) ) {
1143                 DEBUG(0,("local_sid_to_uid: Failed to allocate memory for SAM_ACCOUNT object\n"));
1144                 return False;
1145         }
1146
1147         become_root();
1148         if ( !pdb_getsampwsid(sampw, psid) ) {
1149                 unbecome_root();
1150                 DEBUG(8,("local_sid_to_uid: Could not find SID %s in passdb\n",
1151                         sid_string_static(psid)));
1152                 return False;
1153         }
1154         unbecome_root();
1155
1156         user_name = pdb_get_username(sampw);
1157
1158         unix_pw = sys_getpwnam( user_name );
1159
1160         if ( !unix_pw ) {
1161                 DEBUG(0,("local_sid_to_uid: %s found in passdb but getpwnam() return NULL!\n",
1162                         user_name));
1163                 pdb_free_sam( &sampw );
1164                 return False;
1165         }
1166
1167         *puid = unix_pw->pw_uid;
1168
1169         DEBUG(10,("local_sid_to_uid: SID %s -> uid (%u) (%s).\n", sid_string_static(psid),
1170                 (unsigned int)*puid, user_name ));
1171
1172         *name_type = SID_NAME_USER;
1173
1174         return True;
1175 }
1176
1177 /****************************************************************************
1178  Convert a gid to SID - algorithmic.
1179 ****************************************************************************/
1180
1181 DOM_SID *algorithmic_gid_to_sid(DOM_SID *psid, uid_t gid)
1182 {
1183         if ( !lp_enable_rid_algorithm() )
1184                 return NULL;
1185
1186         DEBUG(8,("algorithmic_gid_to_sid: falling back to RID algorithm\n"));
1187         sid_copy( psid, get_global_sam_sid() );
1188         sid_append_rid( psid, pdb_gid_to_group_rid(gid) );
1189         DEBUG(10,("algorithmic_gid_to_sid:  gid (%d) -> SID %s.\n",
1190                 (unsigned int)gid, sid_string_static(psid) ));
1191
1192         return psid;
1193 }
1194
1195 /****************************************************************************
1196  Convert a gid to SID - locally.
1197 ****************************************************************************/
1198
1199 DOM_SID *local_gid_to_sid(DOM_SID *psid, gid_t gid)
1200 {
1201         GROUP_MAP group;
1202         BOOL ret;
1203
1204         /* we don't need to disable winbindd since the gid is stored in
1205            the GROUP_MAP object */
1206
1207         /* done as root since ldap backend requires root to open a connection */
1208
1209         become_root();
1210         ret = pdb_getgrgid( &group, gid );
1211         unbecome_root();
1212
1213         if ( !ret ) {
1214
1215                 /* fallback to rid mapping if enabled */
1216
1217                 if ( lp_enable_rid_algorithm() ) {
1218
1219                         DEBUG(10,("local_gid_to_sid: Fall back to algorithmic mapping: %u -> %s\n",
1220                                 (unsigned int)gid, sid_string_static(psid)));
1221
1222                         return algorithmic_gid_to_sid(psid, gid);
1223                 }
1224                 else
1225                         return NULL;
1226         }
1227
1228         sid_copy( psid, &group.sid );
1229
1230         DEBUG(10,("local_gid_to_sid:  gid (%d) -> SID %s.\n",
1231                 (unsigned int)gid, sid_string_static(psid)));
1232
1233         return psid;
1234 }
1235
1236 /****************************************************************************
1237  Convert a SID to gid - locally.
1238 ****************************************************************************/
1239
1240 BOOL local_sid_to_gid(gid_t *pgid, const DOM_SID *psid, enum SID_NAME_USE *name_type)
1241 {
1242         uint32 rid;
1243         GROUP_MAP group;
1244         BOOL ret;
1245
1246         *name_type = SID_NAME_UNKNOWN;
1247
1248         /* This call can enumerate group mappings for foreign sids as well.
1249            So don't check for a match against our domain SID */
1250
1251         /* we don't need to disable winbindd since the gid is stored in
1252            the GROUP_MAP object */
1253
1254         become_root();
1255         ret = pdb_getgrsid(&group, *psid);
1256         unbecome_root();
1257
1258         if ( !ret ) {
1259
1260                 /* fallback to rid mapping if enabled */
1261
1262                 if ( lp_enable_rid_algorithm() ) {
1263
1264                         if (!sid_check_is_in_our_domain(psid) ) {
1265                                 DEBUG(5,("local_sid_to_gid: RID algorithm only supported for our domain (%s is not)\n", sid_string_static(psid)));
1266                                 return False;
1267                         }
1268
1269                         if (!sid_peek_rid(psid, &rid)) {
1270                                 DEBUG(10,("local_sid_to_gid: invalid SID!\n"));
1271                                         return False;
1272                         }
1273
1274                         DEBUG(10,("local_sid_to_gid: Fall back to algorithmic mapping\n"));
1275
1276                         if (fallback_pdb_rid_is_user(rid)) {
1277                                 DEBUG(3, ("local_sid_to_gid: SID %s is *NOT* a group\n", sid_string_static(psid)));
1278                                 return False;
1279                         } else {
1280                                 *pgid = pdb_group_rid_to_gid(rid);
1281                                 DEBUG(10,("local_sid_to_gid: mapping: %s -> %u\n", sid_string_static(psid), (unsigned int)(*pgid)));
1282                                 return True;
1283                         }
1284                 }
1285
1286                 return False;
1287         }
1288
1289         *pgid = group.gid;
1290         *name_type = group.sid_name_use;
1291
1292         DEBUG(10,("local_sid_to_gid: SID %s -> gid (%u)\n", sid_string_static(psid),
1293                 (unsigned int)*pgid));
1294
1295         return True;
1296 }
1297
1298 /**********************************************************************
1299  Marshall/unmarshall SAM_ACCOUNT structs.
1300  *********************************************************************/
1301
1302 #define TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
1303 #define TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
1304 #define TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
1305
1306 /**********************************************************************
1307  Intialize a SAM_ACCOUNT struct from a BYTE buffer of size len
1308  *********************************************************************/
1309
1310 BOOL init_sam_from_buffer(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
1311 {
1312         return(init_sam_from_buffer_v2(sampass, buf, buflen));
1313 }
1314
1315 /**********************************************************************
1316  Intialize a BYTE buffer from a SAM_ACCOUNT struct
1317  *********************************************************************/
1318
1319 uint32 init_buffer_from_sam (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL size_only)
1320 {
1321         return(init_buffer_from_sam_v2(buf, sampass, size_only));
1322 }
1323
1324
1325 BOOL init_sam_from_buffer_v0(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
1326 {
1327
1328         /* times are stored as 32bit integer
1329            take care on system with 64bit wide time_t
1330            --SSS */
1331         uint32  logon_time,
1332                 logoff_time,
1333                 kickoff_time,
1334                 pass_last_set_time,
1335                 pass_can_change_time,
1336                 pass_must_change_time;
1337         char *username;
1338         char *domain;
1339         char *nt_username;
1340         char *dir_drive;
1341         char *unknown_str;
1342         char *munged_dial;
1343         char *fullname;
1344         char *homedir;
1345         char *logon_script;
1346         char *profile_path;
1347         char *acct_desc;
1348         char *workstations;
1349         uint32  username_len, domain_len, nt_username_len,
1350                 dir_drive_len, unknown_str_len, munged_dial_len,
1351                 fullname_len, homedir_len, logon_script_len,
1352                 profile_path_len, acct_desc_len, workstations_len;
1353
1354         uint32  user_rid, group_rid, remove_me, hours_len, unknown_6;
1355         uint16  acct_ctrl, logon_divs;
1356         uint16  bad_password_count, logon_count;
1357         uint8   *hours;
1358         uint8   *lm_pw_ptr, *nt_pw_ptr;
1359         uint32          len = 0;
1360         uint32          lm_pw_len, nt_pw_len, hourslen;
1361         BOOL ret = True;
1362
1363         if(sampass == NULL || buf == NULL) {
1364                 DEBUG(0, ("init_sam_from_buffer_v0: NULL parameters found!\n"));
1365                 return False;
1366         }
1367
1368 /* TDB_FORMAT_STRING_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd" */
1369
1370         /* unpack the buffer into variables */
1371         len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V0,
1372                 &logon_time,                                            /* d */
1373                 &logoff_time,                                           /* d */
1374                 &kickoff_time,                                          /* d */
1375                 &pass_last_set_time,                                    /* d */
1376                 &pass_can_change_time,                                  /* d */
1377                 &pass_must_change_time,                                 /* d */
1378                 &username_len, &username,                               /* B */
1379                 &domain_len, &domain,                                   /* B */
1380                 &nt_username_len, &nt_username,                         /* B */
1381                 &fullname_len, &fullname,                               /* B */
1382                 &homedir_len, &homedir,                                 /* B */
1383                 &dir_drive_len, &dir_drive,                             /* B */
1384                 &logon_script_len, &logon_script,                       /* B */
1385                 &profile_path_len, &profile_path,                       /* B */
1386                 &acct_desc_len, &acct_desc,                             /* B */
1387                 &workstations_len, &workstations,                       /* B */
1388                 &unknown_str_len, &unknown_str,                         /* B */
1389                 &munged_dial_len, &munged_dial,                         /* B */
1390                 &user_rid,                                              /* d */
1391                 &group_rid,                                             /* d */
1392                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1393                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1394                 &acct_ctrl,                                             /* w */
1395                 &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
1396                 &logon_divs,                                            /* w */
1397                 &hours_len,                                             /* d */
1398                 &hourslen, &hours,                                      /* B */
1399                 &bad_password_count,                                    /* w */
1400                 &logon_count,                                           /* w */
1401                 &unknown_6);                                            /* d */
1402
1403         if (len == (uint32) -1)  {
1404                 ret = False;
1405                 goto done;
1406         }
1407
1408         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1409         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1410         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1411         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1412         pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
1413         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1414
1415         pdb_set_username(sampass, username, PDB_SET);
1416         pdb_set_domain(sampass, domain, PDB_SET);
1417         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1418         pdb_set_fullname(sampass, fullname, PDB_SET);
1419
1420         if (homedir) {
1421                 pdb_set_homedir(sampass, homedir, PDB_SET);
1422         }
1423         else {
1424                 pdb_set_homedir(sampass,
1425                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
1426                         PDB_DEFAULT);
1427         }
1428
1429         if (dir_drive)
1430                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1431         else {
1432                 pdb_set_dir_drive(sampass,
1433                         talloc_sub_basic(sampass->mem_ctx,  username, lp_logon_drive()),
1434                         PDB_DEFAULT);
1435         }
1436
1437         if (logon_script)
1438                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
1439         else {
1440                 pdb_set_logon_script(sampass,
1441                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
1442                         PDB_DEFAULT);
1443         }
1444
1445         if (profile_path) {
1446                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
1447         } else {
1448                 pdb_set_profile_path(sampass,
1449                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
1450                         PDB_DEFAULT);
1451         }
1452
1453         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1454         pdb_set_workstations(sampass, workstations, PDB_SET);
1455         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1456
1457         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1458                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1459                         ret = False;
1460                         goto done;
1461                 }
1462         }
1463
1464         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1465                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1466                         ret = False;
1467                         goto done;
1468                 }
1469         }
1470
1471         pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1472         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1473         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1474         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1475         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1476         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1477         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1478         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1479         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1480         pdb_set_hours(sampass, hours, PDB_SET);
1481
1482 done:
1483
1484         SAFE_FREE(username);
1485         SAFE_FREE(domain);
1486         SAFE_FREE(nt_username);
1487         SAFE_FREE(fullname);
1488         SAFE_FREE(homedir);
1489         SAFE_FREE(dir_drive);
1490         SAFE_FREE(logon_script);
1491         SAFE_FREE(profile_path);
1492         SAFE_FREE(acct_desc);
1493         SAFE_FREE(workstations);
1494         SAFE_FREE(munged_dial);
1495         SAFE_FREE(unknown_str);
1496         SAFE_FREE(lm_pw_ptr);
1497         SAFE_FREE(nt_pw_ptr);
1498         SAFE_FREE(hours);
1499
1500         return ret;
1501 }
1502
1503 BOOL init_sam_from_buffer_v1(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
1504 {
1505
1506         /* times are stored as 32bit integer
1507            take care on system with 64bit wide time_t
1508            --SSS */
1509         uint32  logon_time,
1510                 logoff_time,
1511                 kickoff_time,
1512                 bad_password_time,
1513                 pass_last_set_time,
1514                 pass_can_change_time,
1515                 pass_must_change_time;
1516         char *username;
1517         char *domain;
1518         char *nt_username;
1519         char *dir_drive;
1520         char *unknown_str;
1521         char *munged_dial;
1522         char *fullname;
1523         char *homedir;
1524         char *logon_script;
1525         char *profile_path;
1526         char *acct_desc;
1527         char *workstations;
1528         uint32  username_len, domain_len, nt_username_len,
1529                 dir_drive_len, unknown_str_len, munged_dial_len,
1530                 fullname_len, homedir_len, logon_script_len,
1531                 profile_path_len, acct_desc_len, workstations_len;
1532
1533         uint32  user_rid, group_rid, remove_me, hours_len, unknown_6;
1534         uint16  acct_ctrl, logon_divs;
1535         uint16  bad_password_count, logon_count;
1536         uint8   *hours;
1537         uint8   *lm_pw_ptr, *nt_pw_ptr;
1538         uint32          len = 0;
1539         uint32          lm_pw_len, nt_pw_len, hourslen;
1540         BOOL ret = True;
1541
1542         if(sampass == NULL || buf == NULL) {
1543                 DEBUG(0, ("init_sam_from_buffer_v1: NULL parameters found!\n"));
1544                 return False;
1545         }
1546
1547 /* TDB_FORMAT_STRING_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd" */
1548
1549         /* unpack the buffer into variables */
1550         len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V1,
1551                 &logon_time,                                            /* d */
1552                 &logoff_time,                                           /* d */
1553                 &kickoff_time,                                          /* d */
1554                 /* Change from V0 is addition of bad_password_time field. */
1555                 &bad_password_time,                                     /* d */
1556                 &pass_last_set_time,                                    /* d */
1557                 &pass_can_change_time,                                  /* d */
1558                 &pass_must_change_time,                                 /* d */
1559                 &username_len, &username,                               /* B */
1560                 &domain_len, &domain,                                   /* B */
1561                 &nt_username_len, &nt_username,                         /* B */
1562                 &fullname_len, &fullname,                               /* B */
1563                 &homedir_len, &homedir,                                 /* B */
1564                 &dir_drive_len, &dir_drive,                             /* B */
1565                 &logon_script_len, &logon_script,                       /* B */
1566                 &profile_path_len, &profile_path,                       /* B */
1567                 &acct_desc_len, &acct_desc,                             /* B */
1568                 &workstations_len, &workstations,                       /* B */
1569                 &unknown_str_len, &unknown_str,                         /* B */
1570                 &munged_dial_len, &munged_dial,                         /* B */
1571                 &user_rid,                                              /* d */
1572                 &group_rid,                                             /* d */
1573                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1574                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1575                 &acct_ctrl,                                             /* w */
1576                 &remove_me,                                             /* d */
1577                 &logon_divs,                                            /* w */
1578                 &hours_len,                                             /* d */
1579                 &hourslen, &hours,                                      /* B */
1580                 &bad_password_count,                                    /* w */
1581                 &logon_count,                                           /* w */
1582                 &unknown_6);                                            /* d */
1583
1584         if (len == (uint32) -1)  {
1585                 ret = False;
1586                 goto done;
1587         }
1588
1589         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1590         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1591         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1592
1593         /* Change from V0 is addition of bad_password_time field. */
1594         pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
1595         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1596         pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
1597         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1598
1599         pdb_set_username(sampass, username, PDB_SET);
1600         pdb_set_domain(sampass, domain, PDB_SET);
1601         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1602         pdb_set_fullname(sampass, fullname, PDB_SET);
1603
1604         if (homedir) {
1605                 pdb_set_homedir(sampass, homedir, PDB_SET);
1606         }
1607         else {
1608                 pdb_set_homedir(sampass,
1609                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
1610                         PDB_DEFAULT);
1611         }
1612
1613         if (dir_drive)
1614                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1615         else {
1616                 pdb_set_dir_drive(sampass,
1617                         talloc_sub_basic(sampass->mem_ctx,  username, lp_logon_drive()),
1618                         PDB_DEFAULT);
1619         }
1620
1621         if (logon_script)
1622                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
1623         else {
1624                 pdb_set_logon_script(sampass,
1625                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
1626                         PDB_DEFAULT);
1627         }
1628
1629         if (profile_path) {
1630                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
1631         } else {
1632                 pdb_set_profile_path(sampass,
1633                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
1634                         PDB_DEFAULT);
1635         }
1636
1637         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1638         pdb_set_workstations(sampass, workstations, PDB_SET);
1639         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1640
1641         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1642                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1643                         ret = False;
1644                         goto done;
1645                 }
1646         }
1647
1648         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1649                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1650                         ret = False;
1651                         goto done;
1652                 }
1653         }
1654
1655         pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1656
1657         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1658         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1659         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1660         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1661         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1662         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1663         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1664         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1665         pdb_set_hours(sampass, hours, PDB_SET);
1666
1667 done:
1668
1669         SAFE_FREE(username);
1670         SAFE_FREE(domain);
1671         SAFE_FREE(nt_username);
1672         SAFE_FREE(fullname);
1673         SAFE_FREE(homedir);
1674         SAFE_FREE(dir_drive);
1675         SAFE_FREE(logon_script);
1676         SAFE_FREE(profile_path);
1677         SAFE_FREE(acct_desc);
1678         SAFE_FREE(workstations);
1679         SAFE_FREE(munged_dial);
1680         SAFE_FREE(unknown_str);
1681         SAFE_FREE(lm_pw_ptr);
1682         SAFE_FREE(nt_pw_ptr);
1683         SAFE_FREE(hours);
1684
1685         return ret;
1686 }
1687
1688
1689 BOOL init_sam_from_buffer_v2(SAM_ACCOUNT *sampass, uint8 *buf, uint32 buflen)
1690 {
1691
1692         /* times are stored as 32bit integer
1693            take care on system with 64bit wide time_t
1694            --SSS */
1695         uint32  logon_time,
1696                 logoff_time,
1697                 kickoff_time,
1698                 bad_password_time,
1699                 pass_last_set_time,
1700                 pass_can_change_time,
1701                 pass_must_change_time;
1702         char *username;
1703         char *domain;
1704         char *nt_username;
1705         char *dir_drive;
1706         char *unknown_str;
1707         char *munged_dial;
1708         char *fullname;
1709         char *homedir;
1710         char *logon_script;
1711         char *profile_path;
1712         char *acct_desc;
1713         char *workstations;
1714         uint32  username_len, domain_len, nt_username_len,
1715                 dir_drive_len, unknown_str_len, munged_dial_len,
1716                 fullname_len, homedir_len, logon_script_len,
1717                 profile_path_len, acct_desc_len, workstations_len;
1718
1719         uint32  user_rid, group_rid, hours_len, unknown_6;
1720         uint16  acct_ctrl, logon_divs;
1721         uint16  bad_password_count, logon_count;
1722         uint8   *hours;
1723         uint8   *lm_pw_ptr, *nt_pw_ptr, *nt_pw_hist_ptr;
1724         uint32          len = 0;
1725         uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
1726         uint32 pwHistLen = 0;
1727         BOOL ret = True;
1728
1729         if(sampass == NULL || buf == NULL) {
1730                 DEBUG(0, ("init_sam_from_buffer_v2: NULL parameters found!\n"));
1731                 return False;
1732         }
1733
1734 /* TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
1735
1736         /* unpack the buffer into variables */
1737         len = tdb_unpack ((char *)buf, buflen, TDB_FORMAT_STRING_V2,
1738                 &logon_time,                                            /* d */
1739                 &logoff_time,                                           /* d */
1740                 &kickoff_time,                                          /* d */
1741                 &bad_password_time,                                     /* d */
1742                 &pass_last_set_time,                                    /* d */
1743                 &pass_can_change_time,                                  /* d */
1744                 &pass_must_change_time,                                 /* d */
1745                 &username_len, &username,                               /* B */
1746                 &domain_len, &domain,                                   /* B */
1747                 &nt_username_len, &nt_username,                         /* B */
1748                 &fullname_len, &fullname,                               /* B */
1749                 &homedir_len, &homedir,                                 /* B */
1750                 &dir_drive_len, &dir_drive,                             /* B */
1751                 &logon_script_len, &logon_script,                       /* B */
1752                 &profile_path_len, &profile_path,                       /* B */
1753                 &acct_desc_len, &acct_desc,                             /* B */
1754                 &workstations_len, &workstations,                       /* B */
1755                 &unknown_str_len, &unknown_str,                         /* B */
1756                 &munged_dial_len, &munged_dial,                         /* B */
1757                 &user_rid,                                              /* d */
1758                 &group_rid,                                             /* d */
1759                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1760                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1761                 /* Change from V1 is addition of password history field. */
1762                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
1763                 &acct_ctrl,                                             /* w */
1764                 /* Also "remove_me" field was removed. */
1765                 &logon_divs,                                            /* w */
1766                 &hours_len,                                             /* d */
1767                 &hourslen, &hours,                                      /* B */
1768                 &bad_password_count,                                    /* w */
1769                 &logon_count,                                           /* w */
1770                 &unknown_6);                                            /* d */
1771
1772         if (len == (uint32) -1)  {
1773                 ret = False;
1774                 goto done;
1775         }
1776
1777         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1778         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1779         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1780         pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
1781         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1782         pdb_set_pass_must_change_time(sampass, pass_must_change_time, PDB_SET);
1783         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1784
1785         pdb_set_username(sampass, username, PDB_SET);
1786         pdb_set_domain(sampass, domain, PDB_SET);
1787         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1788         pdb_set_fullname(sampass, fullname, PDB_SET);
1789
1790         if (homedir) {
1791                 pdb_set_homedir(sampass, homedir, PDB_SET);
1792         }
1793         else {
1794                 pdb_set_homedir(sampass,
1795                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_home()),
1796                         PDB_DEFAULT);
1797         }
1798
1799         if (dir_drive)
1800                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1801         else {
1802                 pdb_set_dir_drive(sampass,
1803                         talloc_sub_basic(sampass->mem_ctx,  username, lp_logon_drive()),
1804                         PDB_DEFAULT);
1805         }
1806
1807         if (logon_script)
1808                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
1809         else {
1810                 pdb_set_logon_script(sampass,
1811                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_script()),
1812                         PDB_DEFAULT);
1813         }
1814
1815         if (profile_path) {
1816                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
1817         } else {
1818                 pdb_set_profile_path(sampass,
1819                         talloc_sub_basic(sampass->mem_ctx, username, lp_logon_path()),
1820                         PDB_DEFAULT);
1821         }
1822
1823         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1824         pdb_set_workstations(sampass, workstations, PDB_SET);
1825         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1826
1827         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1828                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1829                         ret = False;
1830                         goto done;
1831                 }
1832         }
1833
1834         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1835                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1836                         ret = False;
1837                         goto done;
1838                 }
1839         }
1840
1841         /* Change from V1 is addition of password history field. */
1842         account_policy_get(AP_PASSWORD_HISTORY, &pwHistLen);
1843
1844         if (pwHistLen && nt_pw_hist_ptr && ((nt_pw_hist_len % NT_HASH_LEN) == 0)) {
1845                 if (!pdb_set_pw_history(sampass, nt_pw_hist_ptr, nt_pw_hist_len/NT_HASH_LEN, PDB_SET)) {
1846                         ret = False;
1847                         goto done;
1848                 }
1849         } else {
1850                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1851         }
1852
1853         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1854         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1855         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1856         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1857         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1858         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1859         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1860         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1861         pdb_set_hours(sampass, hours, PDB_SET);
1862
1863 done:
1864
1865         SAFE_FREE(username);
1866         SAFE_FREE(domain);
1867         SAFE_FREE(nt_username);
1868         SAFE_FREE(fullname);
1869         SAFE_FREE(homedir);
1870         SAFE_FREE(dir_drive);
1871         SAFE_FREE(logon_script);
1872         SAFE_FREE(profile_path);
1873         SAFE_FREE(acct_desc);
1874         SAFE_FREE(workstations);
1875         SAFE_FREE(munged_dial);
1876         SAFE_FREE(unknown_str);
1877         SAFE_FREE(lm_pw_ptr);
1878         SAFE_FREE(nt_pw_ptr);
1879         SAFE_FREE(nt_pw_hist_ptr);
1880         SAFE_FREE(hours);
1881
1882         return ret;
1883 }
1884
1885 uint32 init_buffer_from_sam_v2 (uint8 **buf, const SAM_ACCOUNT *sampass, BOOL size_only)
1886 {
1887         size_t len, buflen;
1888
1889         /* times are stored as 32bit integer
1890            take care on system with 64bit wide time_t
1891            --SSS */
1892         uint32  logon_time,
1893                 logoff_time,
1894                 kickoff_time,
1895                 bad_password_time,
1896                 pass_last_set_time,
1897                 pass_can_change_time,
1898                 pass_must_change_time;
1899
1900         uint32  user_rid, group_rid;
1901
1902         const char *username;
1903         const char *domain;
1904         const char *nt_username;
1905         const char *dir_drive;
1906         const char *unknown_str;
1907         const char *munged_dial;
1908         const char *fullname;
1909         const char *homedir;
1910         const char *logon_script;
1911         const char *profile_path;
1912         const char *acct_desc;
1913         const char *workstations;
1914         uint32  username_len, domain_len, nt_username_len,
1915                 dir_drive_len, unknown_str_len, munged_dial_len,
1916                 fullname_len, homedir_len, logon_script_len,
1917                 profile_path_len, acct_desc_len, workstations_len;
1918
1919         const uint8 *lm_pw;
1920         const uint8 *nt_pw;
1921         const uint8 *nt_pw_hist;
1922         uint32  lm_pw_len = 16;
1923         uint32  nt_pw_len = 16;
1924         uint32  nt_pw_hist_len;
1925         uint32 pwHistLen = 0;
1926
1927         /* do we have a valid SAM_ACCOUNT pointer? */
1928         if (sampass == NULL) {
1929                 DEBUG(0, ("init_buffer_from_sam: SAM_ACCOUNT is NULL!\n"));
1930                 return -1;
1931         }
1932
1933         *buf = NULL;
1934         buflen = 0;
1935
1936         logon_time = (uint32)pdb_get_logon_time(sampass);
1937         logoff_time = (uint32)pdb_get_logoff_time(sampass);
1938         kickoff_time = (uint32)pdb_get_kickoff_time(sampass);
1939         bad_password_time = (uint32)pdb_get_bad_password_time(sampass);
1940         pass_can_change_time = (uint32)pdb_get_pass_can_change_time(sampass);
1941         pass_must_change_time = (uint32)pdb_get_pass_must_change_time(sampass);
1942         pass_last_set_time = (uint32)pdb_get_pass_last_set_time(sampass);
1943
1944         user_rid = pdb_get_user_rid(sampass);
1945         group_rid = pdb_get_group_rid(sampass);
1946
1947         username = pdb_get_username(sampass);
1948         if (username) {
1949                 username_len = strlen(username) +1;
1950         } else {
1951                 username_len = 0;
1952         }
1953
1954         domain = pdb_get_domain(sampass);
1955         if (domain) {
1956                 domain_len = strlen(domain) +1;
1957         } else {
1958                 domain_len = 0;
1959         }
1960
1961         nt_username = pdb_get_nt_username(sampass);
1962         if (nt_username) {
1963                 nt_username_len = strlen(nt_username) +1;
1964         } else {
1965                 nt_username_len = 0;
1966         }
1967
1968         fullname = pdb_get_fullname(sampass);
1969         if (fullname) {
1970                 fullname_len = strlen(fullname) +1;
1971         } else {
1972                 fullname_len = 0;
1973         }
1974
1975         /*
1976          * Only updates fields which have been set (not defaults from smb.conf)
1977          */
1978
1979         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1980                 dir_drive = pdb_get_dir_drive(sampass);
1981         } else {
1982                 dir_drive = NULL;
1983         }
1984         if (dir_drive) {
1985                 dir_drive_len = strlen(dir_drive) +1;
1986         } else {
1987                 dir_drive_len = 0;
1988         }
1989
1990         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1991                 homedir = pdb_get_homedir(sampass);
1992         } else {
1993                 homedir = NULL;
1994         }
1995         if (homedir) {
1996                 homedir_len = strlen(homedir) +1;
1997         } else {
1998                 homedir_len = 0;
1999         }
2000
2001         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
2002                 logon_script = pdb_get_logon_script(sampass);
2003         } else {
2004                 logon_script = NULL;
2005         }
2006         if (logon_script) {
2007                 logon_script_len = strlen(logon_script) +1;
2008         } else {
2009                 logon_script_len = 0;
2010         }
2011
2012         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
2013                 profile_path = pdb_get_profile_path(sampass);
2014         } else {
2015                 profile_path = NULL;
2016         }
2017         if (profile_path) {
2018                 profile_path_len = strlen(profile_path) +1;
2019         } else {
2020                 profile_path_len = 0;
2021         }
2022
2023         lm_pw = pdb_get_lanman_passwd(sampass);
2024         if (!lm_pw) {
2025                 lm_pw_len = 0;
2026         }
2027
2028         nt_pw = pdb_get_nt_passwd(sampass);
2029         if (!nt_pw) {
2030                 nt_pw_len = 0;
2031         }
2032
2033         account_policy_get(AP_PASSWORD_HISTORY, &pwHistLen);
2034         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
2035         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
2036                 nt_pw_hist_len *= NT_HASH_LEN;
2037         } else {
2038                 nt_pw_hist_len = 0;
2039         }
2040
2041         acct_desc = pdb_get_acct_desc(sampass);
2042         if (acct_desc) {
2043                 acct_desc_len = strlen(acct_desc) +1;
2044         } else {
2045                 acct_desc_len = 0;
2046         }
2047
2048         workstations = pdb_get_workstations(sampass);
2049         if (workstations) {
2050                 workstations_len = strlen(workstations) +1;
2051         } else {
2052                 workstations_len = 0;
2053         }
2054
2055         unknown_str = NULL;
2056         unknown_str_len = 0;
2057
2058         munged_dial = pdb_get_munged_dial(sampass);
2059         if (munged_dial) {
2060                 munged_dial_len = strlen(munged_dial) +1;
2061         } else {
2062                 munged_dial_len = 0;
2063         }
2064
2065 /* TDB_FORMAT_STRING_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
2066
2067         /* one time to get the size needed */
2068         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V2,
2069                 logon_time,                             /* d */
2070                 logoff_time,                            /* d */
2071                 kickoff_time,                           /* d */
2072                 bad_password_time,                      /* d */
2073                 pass_last_set_time,                     /* d */
2074                 pass_can_change_time,                   /* d */
2075                 pass_must_change_time,                  /* d */
2076                 username_len, username,                 /* B */
2077                 domain_len, domain,                     /* B */
2078                 nt_username_len, nt_username,           /* B */
2079                 fullname_len, fullname,                 /* B */
2080                 homedir_len, homedir,                   /* B */
2081                 dir_drive_len, dir_drive,               /* B */
2082                 logon_script_len, logon_script,         /* B */
2083                 profile_path_len, profile_path,         /* B */
2084                 acct_desc_len, acct_desc,               /* B */
2085                 workstations_len, workstations,         /* B */
2086                 unknown_str_len, unknown_str,           /* B */
2087                 munged_dial_len, munged_dial,           /* B */
2088                 user_rid,                               /* d */
2089                 group_rid,                              /* d */
2090                 lm_pw_len, lm_pw,                       /* B */
2091                 nt_pw_len, nt_pw,                       /* B */
2092                 nt_pw_hist_len, nt_pw_hist,             /* B */
2093                 pdb_get_acct_ctrl(sampass),             /* w */
2094                 pdb_get_logon_divs(sampass),            /* w */
2095                 pdb_get_hours_len(sampass),             /* d */
2096                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
2097                 pdb_get_bad_password_count(sampass),    /* w */
2098                 pdb_get_logon_count(sampass),           /* w */
2099                 pdb_get_unknown_6(sampass));            /* d */
2100
2101         if (size_only) {
2102                 return buflen;
2103         }
2104
2105         /* malloc the space needed */
2106         if ( (*buf=(uint8*)malloc(len)) == NULL) {
2107                 DEBUG(0,("init_buffer_from_sam_v2: Unable to malloc() memory for buffer!\n"));
2108                 return (-1);
2109         }
2110
2111         /* now for the real call to tdb_pack() */
2112         buflen = tdb_pack((char *)*buf, len,  TDB_FORMAT_STRING_V2,
2113                 logon_time,                             /* d */
2114                 logoff_time,                            /* d */
2115                 kickoff_time,                           /* d */
2116                 bad_password_time,                      /* d */
2117                 pass_last_set_time,                     /* d */
2118                 pass_can_change_time,                   /* d */
2119                 pass_must_change_time,                  /* d */
2120                 username_len, username,                 /* B */
2121                 domain_len, domain,                     /* B */
2122                 nt_username_len, nt_username,           /* B */
2123                 fullname_len, fullname,                 /* B */
2124                 homedir_len, homedir,                   /* B */
2125                 dir_drive_len, dir_drive,               /* B */
2126                 logon_script_len, logon_script,         /* B */
2127                 profile_path_len, profile_path,         /* B */
2128                 acct_desc_len, acct_desc,               /* B */
2129                 workstations_len, workstations,         /* B */
2130                 unknown_str_len, unknown_str,           /* B */
2131                 munged_dial_len, munged_dial,           /* B */
2132                 user_rid,                               /* d */
2133                 group_rid,                              /* d */
2134                 lm_pw_len, lm_pw,                       /* B */
2135                 nt_pw_len, nt_pw,                       /* B */
2136                 nt_pw_hist_len, nt_pw_hist,             /* B */
2137                 pdb_get_acct_ctrl(sampass),             /* w */
2138                 pdb_get_logon_divs(sampass),            /* w */
2139                 pdb_get_hours_len(sampass),             /* d */
2140                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
2141                 pdb_get_bad_password_count(sampass),    /* w */
2142                 pdb_get_logon_count(sampass),           /* w */
2143                 pdb_get_unknown_6(sampass));            /* d */
2144
2145         /* check to make sure we got it correct */
2146         if (buflen != len) {
2147                 DEBUG(0, ("init_buffer_from_sam_v2: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
2148                           (unsigned long)buflen, (unsigned long)len));
2149                 /* error */
2150                 SAFE_FREE (*buf);
2151                 return (-1);
2152         }
2153
2154         return (buflen);
2155 }
2156
2157 /**********************************************************************
2158 **********************************************************************/
2159
2160 static BOOL get_free_ugid_range(uint32 *low, uint32 *high)
2161 {
2162         uid_t u_low, u_high;
2163         gid_t g_low, g_high;
2164
2165         if (!lp_idmap_uid(&u_low, &u_high) || !lp_idmap_gid(&g_low, &g_high)) {
2166                 return False;
2167         }
2168
2169         *low  = (u_low < g_low)   ? u_low  : g_low;
2170         *high = (u_high < g_high) ? u_high : g_high;
2171
2172         return True;
2173 }
2174
2175 /******************************************************************
2176  Get the the non-algorithmic RID range if idmap range are defined
2177 ******************************************************************/
2178
2179 BOOL get_free_rid_range(uint32 *low, uint32 *high)
2180 {
2181         uint32 id_low, id_high;
2182
2183         if (!lp_enable_rid_algorithm()) {
2184                 *low = BASE_RID;
2185                 *high = (uint32)-1;
2186         }
2187
2188         if (!get_free_ugid_range(&id_low, &id_high)) {
2189                 return False;
2190         }
2191
2192         *low = fallback_pdb_uid_to_user_rid(id_low);
2193         if (fallback_pdb_user_rid_to_uid((uint32)-1) < id_high) {
2194                 *high = (uint32)-1;
2195         } else {
2196                 *high = fallback_pdb_uid_to_user_rid(id_high);
2197         }
2198
2199         return True;
2200 }
2201
2202 /*********************************************************************
2203  Update the bad password count checking the AP_RESET_COUNT_TIME
2204 *********************************************************************/
2205
2206 BOOL pdb_update_bad_password_count(SAM_ACCOUNT *sampass, BOOL *updated)
2207 {
2208         time_t LastBadPassword;
2209         uint16 BadPasswordCount;
2210         uint32 resettime;
2211
2212         if (!sampass) return False;
2213
2214         BadPasswordCount = pdb_get_bad_password_count(sampass);
2215         if (!BadPasswordCount) {
2216                 DEBUG(9, ("No bad password attempts.\n"));
2217                 return True;
2218         }
2219
2220         if (!account_policy_get(AP_RESET_COUNT_TIME, &resettime)) {
2221                 DEBUG(0, ("pdb_update_bad_password_count: account_policy_get failed.\n"));
2222                 return False;
2223         }
2224
2225         /* First, check if there is a reset time to compare */
2226         if ((resettime == (uint32) -1) || (resettime == 0)) {
2227                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
2228                 return True;
2229         }
2230
2231         LastBadPassword = pdb_get_bad_password_time(sampass);
2232         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
2233                    (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
2234         if (time(NULL) > (LastBadPassword + (time_t)resettime*60)){
2235                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
2236                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
2237                 if (updated) *updated = True;
2238         }
2239
2240         return True;
2241 }
2242
2243 /*********************************************************************
2244  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
2245 *********************************************************************/
2246
2247 BOOL pdb_update_autolock_flag(SAM_ACCOUNT *sampass, BOOL *updated)
2248 {
2249         uint32 duration;
2250         time_t LastBadPassword;
2251
2252         if (!sampass) return False;
2253
2254         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
2255                 DEBUG(9, ("Account not autolocked, no check needed\n"));
2256                 return True;
2257         }
2258
2259         if (!account_policy_get(AP_LOCK_ACCOUNT_DURATION, &duration)) {
2260                 DEBUG(0, ("pdb_update_autolock_flag: account_policy_get failed.\n"));
2261                 return False;
2262         }
2263
2264         /* First, check if there is a duration to compare */
2265         if ((duration == (uint32) -1)  || (duration == 0)) {
2266                 DEBUG(9, ("No reset duration, can't reset autolock\n"));
2267                 return True;
2268         }
2269
2270         LastBadPassword = pdb_get_bad_password_time(sampass);
2271         DEBUG(7, ("LastBadPassword=%d, duration=%d, current time =%d.\n",
2272                   (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
2273         if ((time(NULL) > (LastBadPassword + (time_t) duration * 60))) {
2274                 pdb_set_acct_ctrl(sampass,
2275                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
2276                                   PDB_CHANGED);
2277                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
2278                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
2279                 if (updated) *updated = True;
2280         }
2281
2282         return True;
2283 }
2284
2285 /*********************************************************************
2286  Increment the bad_password_count
2287 *********************************************************************/
2288
2289 BOOL pdb_increment_bad_password_count(SAM_ACCOUNT *sampass)
2290 {
2291         uint32 account_policy_lockout;
2292         BOOL autolock_updated = False, badpw_updated = False;
2293
2294         if (!sampass)
2295                 return False;
2296
2297         /* Retrieve the account lockout policy */
2298         if (!account_policy_get(AP_BAD_ATTEMPT_LOCKOUT,
2299                                 &account_policy_lockout)) {
2300                 DEBUG(0, ("pdb_increment_bad_password_count: account_policy_get failed.\n"));
2301                 return False;
2302         }
2303
2304         /* If there is no policy, we don't need to continue checking */
2305         if (!account_policy_lockout) {
2306                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
2307                 return True;
2308         }
2309
2310         /* Check if the autolock needs to be cleared */
2311         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
2312                 return False;
2313
2314         /* Check if the badpw count needs to be reset */
2315         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
2316                 return False;
2317
2318         /*
2319           Ok, now we can assume that any resetting that needs to be
2320           done has been done, and just get on with incrementing
2321           and autolocking if necessary
2322         */
2323
2324         pdb_set_bad_password_count(sampass,
2325                                    pdb_get_bad_password_count(sampass)+1,
2326                                    PDB_CHANGED);
2327         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
2328
2329
2330         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
2331                 return True;
2332
2333         if (!pdb_set_acct_ctrl(sampass,
2334                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
2335                                PDB_CHANGED)) {
2336                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
2337                 return False;
2338         }
2339
2340         return True;
2341 }