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          2000-2006
   7    Copyright (C) Andrew Bartlett                2001-2002
   8    Copyright (C) Simo Sorce                     2003
   9    Copyright (C) Volker Lendecke                2006
  10
  11    This program is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 3 of the License, or
  14    (at your option) any later version.
  15
  16    This program is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  23 */
  24
  25 #include "includes.h"
  26 #include "passdb.h"
  27 #include "system/passwd.h"
  28 #include "../libcli/auth/libcli_auth.h"
  29 #include "secrets.h"
  30 #include "../libcli/security/security.h"
  31 #include "../lib/util/util_pw.h"
  32 #include "util_tdb.h"
  33 #include "auth/credentials/credentials.h"
  34 #include "lib/param/param.h"
  35
  36 #undef DBGC_CLASS
  37 #define DBGC_CLASS DBGC_PASSDB
  38
  39 /**********************************************************************
  40 ***********************************************************************/
  41
  42 static int samu_destroy(struct samu *user)
  43 {
  44         data_blob_clear_free( &user->lm_pw );
  45         data_blob_clear_free( &user->nt_pw );
  46
  47         if ( user->plaintext_pw )
  48                 memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) );
  49
  50         return 0;
  51 }
  52
  53 /**********************************************************************
  54  generate a new struct samuser
  55 ***********************************************************************/
  56
  57 struct samu *samu_new( TALLOC_CTX *ctx )
  58 {
  59         struct samu *user;
  60
  61         if ( !(user = talloc_zero( ctx, struct samu )) ) {
  62                 DEBUG(0,("samuser_new: Talloc failed!\n"));
  63                 return NULL;
  64         }
  65
  66         talloc_set_destructor( user, samu_destroy );
  67
  68         /* no initial methods */
  69
  70         user->methods = NULL;
  71
  72         /* Don't change these timestamp settings without a good reason.
  73            They are important for NT member server compatibility. */
  74
  75         user->logon_time            = (time_t)0;
  76         user->pass_last_set_time    = (time_t)0;
  77         user->pass_can_change_time  = (time_t)0;
  78         user->logoff_time           = get_time_t_max();
  79         user->kickoff_time          = get_time_t_max();
  80         user->fields_present        = 0x00ffffff;
  81         user->logon_divs = 168;         /* hours per week */
  82         user->hours_len = 21;           /* 21 times 8 bits = 168 */
  83         memset(user->hours, 0xff, user->hours_len); /* available at all hours */
  84         user->bad_password_count = 0;
  85         user->logon_count = 0;
  86         user->unknown_6 = 0x000004ec; /* don't know */
  87
  88         /* Some parts of samba strlen their pdb_get...() returns,
  89            so this keeps the interface unchanged for now. */
  90
  91         user->username = "";
  92         user->domain = "";
  93         user->nt_username = "";
  94         user->full_name = "";
  95         user->home_dir = "";
  96         user->logon_script = "";
  97         user->profile_path = "";
  98         user->acct_desc = "";
  99         user->workstations = "";
 100         user->comment = "";
 101         user->munged_dial = "";
 102
 103         user->plaintext_pw = NULL;
 104
 105         /* Unless we know otherwise have a Account Control Bit
 106            value of 'normal user'.  This helps User Manager, which
 107            asks for a filtered list of users. */
 108
 109         user->acct_ctrl = ACB_NORMAL;
 110
 111         return user;
 112 }
 113
 114 static int count_commas(const char *str)
 115 {
 116         int num_commas = 0;
 117         const char *comma = str;
 118
 119         while ((comma = strchr(comma, ',')) != NULL) {
 120                 comma += 1;
 121                 num_commas += 1;
 122         }
 123         return num_commas;
 124 }
 125
 126 /*********************************************************************
 127  Initialize a struct samu from a struct passwd including the user
 128  and group SIDs.  The *user structure is filled out with the Unix
 129  attributes and a user SID.
 130 *********************************************************************/
 131
 132 static NTSTATUS samu_set_unix_internal(struct pdb_methods *methods,
 133                                        struct samu *user, const struct passwd *pwd, bool create)
 134 {
 135         const char *guest_account = lp_guest_account();
 136         const char *domain = lp_netbios_name();
 137         char *fullname;
 138         uint32_t urid;
 139
 140         if ( !pwd ) {
 141                 return NT_STATUS_NO_SUCH_USER;
 142         }
 143
 144         /* Basic properties based upon the Unix account information */
 145
 146         pdb_set_username(user, pwd->pw_name, PDB_SET);
 147
 148         fullname = NULL;
 149
 150         if (count_commas(pwd->pw_gecos) == 3) {
 151                 /*
 152                  * Heuristic: This seems to be a gecos field that has been
 153                  * edited by chfn(1). Only use the part before the first
 154                  * comma. Fixes bug 5198.
 155                  */
 156                 fullname = talloc_strndup(
 157                         talloc_tos(), pwd->pw_gecos,
 158                         strchr(pwd->pw_gecos, ',') - pwd->pw_gecos);
 159         }
 160
 161         if (fullname != NULL) {
 162                 pdb_set_fullname(user, fullname, PDB_SET);
 163         } else {
 164                 pdb_set_fullname(user, pwd->pw_gecos, PDB_SET);
 165         }
 166         TALLOC_FREE(fullname);
 167
 168         pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT);
 169 #if 0
 170         /* This can lead to a primary group of S-1-22-2-XX which
 171            will be rejected by other parts of the Samba code.
 172            Rely on pdb_get_group_sid() to "Do The Right Thing" (TM)
 173            --jerry */
 174
 175         gid_to_sid(&group_sid, pwd->pw_gid);
 176         pdb_set_group_sid(user, &group_sid, PDB_SET);
 177 #endif
 178
 179         /* save the password structure for later use */
 180
 181         user->unix_pw = tcopy_passwd( user, pwd );
 182
 183         /* Special case for the guest account which must have a RID of 501 */
 184
 185         if ( strequal( pwd->pw_name, guest_account ) ) {
 186                 if ( !pdb_set_user_sid_from_rid(user, DOMAIN_RID_GUEST, PDB_DEFAULT)) {
 187                         return NT_STATUS_NO_SUCH_USER;
 188                 }
 189                 return NT_STATUS_OK;
 190         }
 191
 192         /* Non-guest accounts...Check for a workstation or user account */
 193
 194         if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') {
 195                 /* workstation */
 196
 197                 if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) {
 198                         DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n",
 199                                 pwd->pw_name));
 200                         return NT_STATUS_INVALID_COMPUTER_NAME;
 201                 }
 202         }
 203         else {
 204                 /* user */
 205
 206                 if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) {
 207                         DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n",
 208                                 pwd->pw_name));
 209                         return NT_STATUS_INVALID_ACCOUNT_NAME;
 210                 }
 211
 212                 /* set some basic attributes */
 213
 214                 pdb_set_profile_path(user, talloc_sub_specified(user,
 215                         lp_logon_path(), pwd->pw_name, NULL, domain, pwd->pw_uid, pwd->pw_gid),
 216                         PDB_DEFAULT);
 217                 pdb_set_homedir(user, talloc_sub_specified(user,
 218                         lp_logon_home(), pwd->pw_name, NULL, domain, pwd->pw_uid, pwd->pw_gid),
 219                         PDB_DEFAULT);
 220                 pdb_set_dir_drive(user, talloc_sub_specified(user,
 221                         lp_logon_drive(), pwd->pw_name, NULL, domain, pwd->pw_uid, pwd->pw_gid),
 222                         PDB_DEFAULT);
 223                 pdb_set_logon_script(user, talloc_sub_specified(user,
 224                         lp_logon_script(), pwd->pw_name, NULL, domain, pwd->pw_uid, pwd->pw_gid),
 225                         PDB_DEFAULT);
 226         }
 227
 228         /* Now deal with the user SID.  If we have a backend that can generate
 229            RIDs, then do so.  But sometimes the caller just wanted a structure
 230            initialized and will fill in these fields later (such as from a
 231            netr_SamInfo3 structure) */
 232
 233         if ( create && (methods->capabilities(methods) & PDB_CAP_STORE_RIDS)) {
 234                 uint32_t user_rid;
 235                 struct dom_sid user_sid;
 236
 237                 if ( !methods->new_rid(methods, &user_rid) ) {
 238                         DEBUG(3, ("Could not allocate a new RID\n"));
 239                         return NT_STATUS_ACCESS_DENIED;
 240                 }
 241
 242                 sid_compose(&user_sid, get_global_sam_sid(), user_rid);
 243
 244                 if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) {
 245                         DEBUG(3, ("pdb_set_user_sid failed\n"));
 246                         return NT_STATUS_INTERNAL_ERROR;
 247                 }
 248
 249                 return NT_STATUS_OK;
 250         }
 251
 252         /* generate a SID for the user with the RID algorithm */
 253
 254         urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid );
 255
 256         if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) {
 257                 return NT_STATUS_INTERNAL_ERROR;
 258         }
 259
 260         return NT_STATUS_OK;
 261 }
 262
 263 /********************************************************************
 264  Set the Unix user attributes
 265 ********************************************************************/
 266
 267 NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd)
 268 {
 269         return samu_set_unix_internal( NULL, user, pwd, False );
 270 }
 271
 272 NTSTATUS samu_alloc_rid_unix(struct pdb_methods *methods,
 273                              struct samu *user, const struct passwd *pwd)
 274 {
 275         return samu_set_unix_internal( methods, user, pwd, True );
 276 }
 277
 278 /**********************************************************
 279  Encode the account control bits into a string.
 280  length = length of string to encode into (including terminating
 281  null). length *MUST BE MORE THAN 2* !
 282  **********************************************************/
 283
 284 char *pdb_encode_acct_ctrl(uint32_t acct_ctrl, size_t length)
 285 {
 286         fstring acct_str;
 287         char *result;
 288
 289         size_t i = 0;
 290
 291         SMB_ASSERT(length <= sizeof(acct_str));
 292
 293         acct_str[i++] = '[';
 294
 295         if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N';
 296         if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D';
 297         if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H';
 298         if (acct_ctrl & ACB_TEMPDUP  ) acct_str[i++] = 'T';
 299         if (acct_ctrl & ACB_NORMAL   ) acct_str[i++] = 'U';
 300         if (acct_ctrl & ACB_MNS      ) acct_str[i++] = 'M';
 301         if (acct_ctrl & ACB_WSTRUST  ) acct_str[i++] = 'W';
 302         if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S';
 303         if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L';
 304         if (acct_ctrl & ACB_PWNOEXP  ) acct_str[i++] = 'X';
 305         if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I';
 306
 307         for ( ; i < length - 2 ; i++ )
 308                 acct_str[i] = ' ';
 309
 310         i = length - 2;
 311         acct_str[i++] = ']';
 312         acct_str[i++] = '\0';
 313
 314         result = talloc_strdup(talloc_tos(), acct_str);
 315         SMB_ASSERT(result != NULL);
 316         return result;
 317 }
 318
 319 /**********************************************************
 320  Decode the account control bits from a string.
 321  **********************************************************/
 322
 323 uint32_t pdb_decode_acct_ctrl(const char *p)
 324 {
 325         uint32_t acct_ctrl = 0;
 326         bool finished = false;
 327
 328         /*
 329          * Check if the account type bits have been encoded after the
 330          * NT password (in the form [NDHTUWSLXI]).
 331          */
 332
 333         if (*p != '[')
 334                 return 0;
 335
 336         for (p++; *p && !finished; p++) {
 337                 switch (*p) {
 338                         case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
 339                         case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
 340                         case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
 341                         case 'T': { acct_ctrl |= ACB_TEMPDUP  ; break; /* 'T'emp account. */ }
 342                         case 'U': { acct_ctrl |= ACB_NORMAL   ; break; /* 'U'ser account (normal). */ }
 343                         case 'M': { acct_ctrl |= ACB_MNS      ; break; /* 'M'NS logon user account. What is this ? */ }
 344                         case 'W': { acct_ctrl |= ACB_WSTRUST  ; break; /* 'W'orkstation account. */ }
 345                         case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
 346                         case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
 347                         case 'X': { acct_ctrl |= ACB_PWNOEXP  ; break; /* No 'X'piry on password */ }
 348                         case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
 349             case ' ': { break; }
 350                         case ':':
 351                         case '\n':
 352                         case '\0':
 353                         case ']':
 354                         default:  { finished = true; }
 355                 }
 356         }
 357
 358         return acct_ctrl;
 359 }
 360
 361 /*************************************************************
 362  Routine to set 32 hex password characters from a 16 byte array.
 363 **************************************************************/
 364
 365 void pdb_sethexpwd(char p[33], const unsigned char *pwd, uint32_t acct_ctrl)
 366 {
 367         if (pwd != NULL) {
 368                 hex_encode_buf(p, pwd, 16);
 369         } else {
 370                 if (acct_ctrl & ACB_PWNOTREQ)
 371                         strlcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 33);
 372                 else
 373                         strlcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 33);
 374         }
 375 }
 376
 377 /*************************************************************
 378  Routine to get the 32 hex characters and turn them
 379  into a 16 byte array.
 380 **************************************************************/
 381
 382 bool pdb_gethexpwd(const char *p, unsigned char *pwd)
 383 {
 384         int i;
 385         unsigned char   lonybble, hinybble;
 386         const char      *hexchars = "0123456789ABCDEF";
 387         char           *p1, *p2;
 388
 389         if (!p)
 390                 return false;
 391
 392         for (i = 0; i < 32; i += 2) {
 393                 hinybble = toupper_m(p[i]);
 394                 lonybble = toupper_m(p[i + 1]);
 395
 396                 p1 = strchr(hexchars, hinybble);
 397                 p2 = strchr(hexchars, lonybble);
 398
 399                 if (!p1 || !p2)
 400                         return false;
 401
 402                 hinybble = PTR_DIFF(p1, hexchars);
 403                 lonybble = PTR_DIFF(p2, hexchars);
 404
 405                 pwd[i / 2] = (hinybble << 4) | lonybble;
 406         }
 407         return true;
 408 }
 409
 410 /*************************************************************
 411  Routine to set 42 hex hours characters from a 21 byte array.
 412 **************************************************************/
 413
 414 void pdb_sethexhours(char *p, const unsigned char *hours)
 415 {
 416         if (hours != NULL) {
 417                 hex_encode_buf(p, hours, 21);
 418         } else {
 419                 strlcpy(p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 44);
 420         }
 421 }
 422
 423 /*************************************************************
 424  Routine to get the 42 hex characters and turn them
 425  into a 21 byte array.
 426 **************************************************************/
 427
 428 bool pdb_gethexhours(const char *p, unsigned char *hours)
 429 {
 430         int i;
 431         unsigned char   lonybble, hinybble;
 432         const char      *hexchars = "0123456789ABCDEF";
 433         char           *p1, *p2;
 434
 435         if (!p) {
 436                 return (False);
 437         }
 438
 439         for (i = 0; i < 42; i += 2) {
 440                 hinybble = toupper_m(p[i]);
 441                 lonybble = toupper_m(p[i + 1]);
 442
 443                 p1 = strchr(hexchars, hinybble);
 444                 p2 = strchr(hexchars, lonybble);
 445
 446                 if (!p1 || !p2) {
 447                         return (False);
 448                 }
 449
 450                 hinybble = PTR_DIFF(p1, hexchars);
 451                 lonybble = PTR_DIFF(p2, hexchars);
 452
 453                 hours[i / 2] = (hinybble << 4) | lonybble;
 454         }
 455         return (True);
 456 }
 457
 458 /********************************************************************
 459 ********************************************************************/
 460
 461 int algorithmic_rid_base(void)
 462 {
 463         int rid_offset;
 464
 465         rid_offset = lp_algorithmic_rid_base();
 466
 467         if (rid_offset < BASE_RID) {
 468                 /* Try to prevent admin foot-shooting, we can't put algorithmic
 469                    rids below 1000, that's the 'well known RIDs' on NT */
 470                 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
 471                 rid_offset = BASE_RID;
 472         }
 473         if (rid_offset & 1) {
 474                 DEBUG(0, ("algorithmic rid base must be even\n"));
 475                 rid_offset += 1;
 476         }
 477         return rid_offset;
 478 }
 479
 480 /*******************************************************************
 481  Converts NT user RID to a UNIX uid.
 482  ********************************************************************/
 483
 484 uid_t algorithmic_pdb_user_rid_to_uid(uint32_t user_rid)
 485 {
 486         int rid_offset = algorithmic_rid_base();
 487         return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 488 }
 489
 490 uid_t max_algorithmic_uid(void)
 491 {
 492         return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
 493 }
 494
 495 /*******************************************************************
 496  converts UNIX uid to an NT User RID.
 497  ********************************************************************/
 498
 499 uint32_t algorithmic_pdb_uid_to_user_rid(uid_t uid)
 500 {
 501         int rid_offset = algorithmic_rid_base();
 502         return (((((uint32_t)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
 503 }
 504
 505 /*******************************************************************
 506  Converts NT group RID to a UNIX gid.
 507  ********************************************************************/
 508
 509 gid_t pdb_group_rid_to_gid(uint32_t group_rid)
 510 {
 511         int rid_offset = algorithmic_rid_base();
 512         return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 513 }
 514
 515 gid_t max_algorithmic_gid(void)
 516 {
 517         return pdb_group_rid_to_gid(0xffffffff);
 518 }
 519
 520 /*******************************************************************
 521  converts NT Group RID to a UNIX uid.
 522
 523  warning: you must not call that function only
 524  you must do a call to the group mapping first.
 525  there is not anymore a direct link between the gid and the rid.
 526  ********************************************************************/
 527
 528 uint32_t algorithmic_pdb_gid_to_group_rid(gid_t gid)
 529 {
 530         int rid_offset = algorithmic_rid_base();
 531         return (((((uint32_t)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
 532 }
 533
 534 /*******************************************************************
 535  Decides if a RID is a well known RID.
 536  ********************************************************************/
 537
 538 static bool rid_is_well_known(uint32_t rid)
 539 {
 540         /* Not using rid_offset here, because this is the actual
 541            NT fixed value (1000) */
 542
 543         return (rid < BASE_RID);
 544 }
 545
 546 /*******************************************************************
 547  Decides if a RID is a user or group RID.
 548  ********************************************************************/
 549
 550 bool algorithmic_pdb_rid_is_user(uint32_t rid)
 551 {
 552         if ( rid_is_well_known(rid) ) {
 553                 /*
 554                  * The only well known user RIDs are DOMAIN_RID_ADMINISTRATOR
 555                  * and DOMAIN_RID_GUEST.
 556                  */
 557                 if(rid == DOMAIN_RID_ADMINISTRATOR || rid == DOMAIN_RID_GUEST)
 558                         return True;
 559         } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
 560                 return True;
 561         }
 562         return False;
 563 }
 564
 565 /*******************************************************************
 566  Convert a name into a SID. Used in the lookup name rpc.
 567  ********************************************************************/
 568
 569 bool lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
 570                             enum lsa_SidType *type)
 571 {
 572         GROUP_MAP *map;
 573         bool ret;
 574
 575         /* Windows treats "MACHINE\None" as a special name for
 576            rid 513 on non-DCs.  You cannot create a user or group
 577            name "None" on Windows.  You will get an error that
 578            the group already exists. */
 579
 580         if ( strequal( name, "None" ) ) {
 581                 *rid = DOMAIN_RID_USERS;
 582                 *type = SID_NAME_DOM_GRP;
 583
 584                 return True;
 585         }
 586
 587         /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
 588          * correctly in the case where foo also exists as a user. If the flag
 589          * is set, don't look for users at all. */
 590
 591         if ((flags & LOOKUP_NAME_GROUP) == 0) {
 592                 struct samu *sam_account = NULL;
 593                 struct dom_sid user_sid;
 594
 595                 if ( !(sam_account = samu_new( NULL )) ) {
 596                         return False;
 597                 }
 598
 599                 become_root();
 600                 ret =  pdb_getsampwnam(sam_account, name);
 601                 unbecome_root();
 602
 603                 if (ret) {
 604                         sid_copy(&user_sid, pdb_get_user_sid(sam_account));
 605                 }
 606
 607                 TALLOC_FREE(sam_account);
 608
 609                 if (ret) {
 610                         if (!sid_check_is_in_our_sam(&user_sid)) {
 611                                 DEBUG(0, ("User %s with invalid SID %s in passdb\n",
 612                                           name, sid_string_dbg(&user_sid)));
 613                                 return False;
 614                         }
 615
 616                         sid_peek_rid(&user_sid, rid);
 617                         *type = SID_NAME_USER;
 618                         return True;
 619                 }
 620         }
 621
 622         /*
 623          * Maybe it is a group ?
 624          */
 625
 626         map = talloc_zero(NULL, GROUP_MAP);
 627         if (!map) {
 628                 return false;
 629         }
 630
 631         become_root();
 632         ret = pdb_getgrnam(map, name);
 633         unbecome_root();
 634
 635         if (!ret) {
 636                 TALLOC_FREE(map);
 637                 return False;
 638         }
 639
 640         /* BUILTIN groups are looked up elsewhere */
 641         if (!sid_check_is_in_our_sam(&map->sid)) {
 642                 DEBUG(10, ("Found group %s (%s) not in our domain -- "
 643                            "ignoring.\n",
 644                            name, sid_string_dbg(&map->sid)));
 645                 TALLOC_FREE(map);
 646                 return False;
 647         }
 648
 649         /* yes it's a mapped group */
 650         sid_peek_rid(&map->sid, rid);
 651         *type = map->sid_name_use;
 652         TALLOC_FREE(map);
 653         return True;
 654 }
 655
 656 /*************************************************************
 657  Change a password entry in the local passdb backend.
 658
 659  Assumptions:
 660   - always called as root
 661   - ignores the account type except when adding a new account
 662   - will create/delete the unix account if the relative
 663     add/delete user script is configured
 664
 665  *************************************************************/
 666
 667 NTSTATUS local_password_change(const char *user_name,
 668                                 int local_flags,
 669                                 const char *new_passwd,
 670                                 char **pp_err_str,
 671                                 char **pp_msg_str)
 672 {
 673         TALLOC_CTX *tosctx;
 674         struct samu *sam_pass;
 675         uint32_t acb;
 676         uint32_t rid;
 677         NTSTATUS result;
 678         bool user_exists;
 679         int ret = -1;
 680
 681         *pp_err_str = NULL;
 682         *pp_msg_str = NULL;
 683
 684         tosctx = talloc_tos();
 685
 686         sam_pass = samu_new(tosctx);
 687         if (!sam_pass) {
 688                 result = NT_STATUS_NO_MEMORY;
 689                 goto done;
 690         }
 691
 692         /* Get the smb passwd entry for this user */
 693         user_exists = pdb_getsampwnam(sam_pass, user_name);
 694
 695         /* Check delete first, we don't need to do anything else if we
 696          * are going to delete the acocunt */
 697         if (user_exists && (local_flags & LOCAL_DELETE_USER)) {
 698
 699                 result = pdb_delete_user(tosctx, sam_pass);
 700                 if (!NT_STATUS_IS_OK(result)) {
 701                         ret = asprintf(pp_err_str,
 702                                         "Failed to delete entry for user %s.\n",
 703                                         user_name);
 704                         if (ret < 0) {
 705                                 *pp_err_str = NULL;
 706                         }
 707                         result = NT_STATUS_UNSUCCESSFUL;
 708                 } else {
 709                         ret = asprintf(pp_msg_str,
 710                                         "Deleted user %s.\n",
 711                                         user_name);
 712                         if (ret < 0) {
 713                                 *pp_msg_str = NULL;
 714                         }
 715                 }
 716                 goto done;
 717         }
 718
 719         if (user_exists && (local_flags & LOCAL_ADD_USER)) {
 720                 /* the entry already existed */
 721                 local_flags &= ~LOCAL_ADD_USER;
 722         }
 723
 724         if (!user_exists && !(local_flags & LOCAL_ADD_USER)) {
 725                 ret = asprintf(pp_err_str,
 726                                 "Failed to find entry for user %s.\n",
 727                                 user_name);
 728                 if (ret < 0) {
 729                         *pp_err_str = NULL;
 730                 }
 731                 result = NT_STATUS_NO_SUCH_USER;
 732                 goto done;
 733         }
 734
 735         /* First thing add the new user if we are required to do so */
 736         if (local_flags & LOCAL_ADD_USER) {
 737
 738                 if (local_flags & LOCAL_TRUST_ACCOUNT) {
 739                         acb = ACB_WSTRUST;
 740                 } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 741                         acb = ACB_DOMTRUST;
 742                 } else {
 743                         acb = ACB_NORMAL;
 744                 }
 745
 746                 result = pdb_create_user(tosctx, user_name, acb, &rid);
 747                 if (!NT_STATUS_IS_OK(result)) {
 748                         ret = asprintf(pp_err_str,
 749                                         "Failed to add entry for user %s.\n",
 750                                         user_name);
 751                         if (ret < 0) {
 752                                 *pp_err_str = NULL;
 753                         }
 754                         result = NT_STATUS_UNSUCCESSFUL;
 755                         goto done;
 756                 }
 757
 758                 sam_pass = samu_new(tosctx);
 759                 if (!sam_pass) {
 760                         result = NT_STATUS_NO_MEMORY;
 761                         goto done;
 762                 }
 763
 764                 /* Now get back the smb passwd entry for this new user */
 765                 user_exists = pdb_getsampwnam(sam_pass, user_name);
 766                 if (!user_exists) {
 767                         ret = asprintf(pp_err_str,
 768                                         "Failed to add entry for user %s.\n",
 769                                         user_name);
 770                         if (ret < 0) {
 771                                 *pp_err_str = NULL;
 772                         }
 773                         result = NT_STATUS_UNSUCCESSFUL;
 774                         goto done;
 775                 }
 776         }
 777
 778         acb = pdb_get_acct_ctrl(sam_pass);
 779
 780         /*
 781          * We are root - just write the new password
 782          * and the valid last change time.
 783          */
 784         if ((local_flags & LOCAL_SET_NO_PASSWORD) && !(acb & ACB_PWNOTREQ)) {
 785                 acb |= ACB_PWNOTREQ;
 786                 if (!pdb_set_acct_ctrl(sam_pass, acb, PDB_CHANGED)) {
 787                         ret = asprintf(pp_err_str,
 788                                         "Failed to set 'no password required' "
 789                                         "flag for user %s.\n", user_name);
 790                         if (ret < 0) {
 791                                 *pp_err_str = NULL;
 792                         }
 793                         result = NT_STATUS_UNSUCCESSFUL;
 794                         goto done;
 795                 }
 796         }
 797
 798         if (local_flags & LOCAL_SET_PASSWORD) {
 799                 /*
 800                  * If we're dealing with setting a completely empty user account
 801                  * ie. One with a password of 'XXXX', but not set disabled (like
 802                  * an account created from scratch) then if the old password was
 803                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
 804                  * We remove that as we're giving this user their first password
 805                  * and the decision hasn't really been made to disable them (ie.
 806                  * don't create them disabled). JRA.
 807                  */
 808                 if ((pdb_get_lanman_passwd(sam_pass) == NULL) &&
 809                     (acb & ACB_DISABLED)) {
 810                         acb &= (~ACB_DISABLED);
 811                         if (!pdb_set_acct_ctrl(sam_pass, acb, PDB_CHANGED)) {
 812                                 ret = asprintf(pp_err_str,
 813                                                 "Failed to unset 'disabled' "
 814                                                 "flag for user %s.\n",
 815                                                 user_name);
 816                                 if (ret < 0) {
 817                                         *pp_err_str = NULL;
 818                                 }
 819                                 result = NT_STATUS_UNSUCCESSFUL;
 820                                 goto done;
 821                         }
 822                 }
 823
 824                 acb &= (~ACB_PWNOTREQ);
 825                 if (!pdb_set_acct_ctrl(sam_pass, acb, PDB_CHANGED)) {
 826                         ret = asprintf(pp_err_str,
 827                                         "Failed to unset 'no password required'"
 828                                         " flag for user %s.\n", user_name);
 829                         if (ret < 0) {
 830                                 *pp_err_str = NULL;
 831                         }
 832                         result = NT_STATUS_UNSUCCESSFUL;
 833                         goto done;
 834                 }
 835
 836                 if (!pdb_set_plaintext_passwd(sam_pass, new_passwd)) {
 837                         ret = asprintf(pp_err_str,
 838                                         "Failed to set password for "
 839                                         "user %s.\n", user_name);
 840                                 if (ret < 0) {
 841                                 *pp_err_str = NULL;
 842                         }
 843                         result = NT_STATUS_UNSUCCESSFUL;
 844                         goto done;
 845                 }
 846         }
 847
 848         if ((local_flags & LOCAL_DISABLE_USER) && !(acb & ACB_DISABLED)) {
 849                 acb |= ACB_DISABLED;
 850                 if (!pdb_set_acct_ctrl(sam_pass, acb, PDB_CHANGED)) {
 851                         ret = asprintf(pp_err_str,
 852                                         "Failed to set 'disabled' flag for "
 853                                         "user %s.\n", user_name);
 854                         if (ret < 0) {
 855                                 *pp_err_str = NULL;
 856                         }
 857                         result = NT_STATUS_UNSUCCESSFUL;
 858                         goto done;
 859                 }
 860         }
 861
 862         if ((local_flags & LOCAL_ENABLE_USER) && (acb & ACB_DISABLED)) {
 863                 acb &= (~ACB_DISABLED);
 864                 if (!pdb_set_acct_ctrl(sam_pass, acb, PDB_CHANGED)) {
 865                         ret = asprintf(pp_err_str,
 866                                         "Failed to unset 'disabled' flag for "
 867                                         "user %s.\n", user_name);
 868                         if (ret < 0) {
 869                                 *pp_err_str = NULL;
 870                         }
 871                         result = NT_STATUS_UNSUCCESSFUL;
 872                         goto done;
 873                 }
 874         }
 875
 876         /* now commit changes if any */
 877         result = pdb_update_sam_account(sam_pass);
 878         if (!NT_STATUS_IS_OK(result)) {
 879                 ret = asprintf(pp_err_str,
 880                                 "Failed to modify entry for user %s.\n",
 881                                 user_name);
 882                 if (ret < 0) {
 883                         *pp_err_str = NULL;
 884                 }
 885                 goto done;
 886         }
 887
 888         if (local_flags & LOCAL_ADD_USER) {
 889                 ret = asprintf(pp_msg_str, "Added user %s.\n", user_name);
 890         } else if (local_flags & LOCAL_DISABLE_USER) {
 891                 ret = asprintf(pp_msg_str, "Disabled user %s.\n", user_name);
 892         } else if (local_flags & LOCAL_ENABLE_USER) {
 893                 ret = asprintf(pp_msg_str, "Enabled user %s.\n", user_name);
 894         } else if (local_flags & LOCAL_SET_NO_PASSWORD) {
 895                 ret = asprintf(pp_msg_str,
 896                                 "User %s password set to none.\n", user_name);
 897         }
 898
 899         if (ret < 0) {
 900                 *pp_msg_str = NULL;
 901         }
 902
 903         result = NT_STATUS_OK;
 904
 905 done:
 906         TALLOC_FREE(sam_pass);
 907         return result;
 908 }
 909
 910 /**********************************************************************
 911  Marshall/unmarshall struct samu structs.
 912  *********************************************************************/
 913
 914 #define SAMU_BUFFER_FORMAT_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd"
 915 #define SAMU_BUFFER_FORMAT_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd"
 916 #define SAMU_BUFFER_FORMAT_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd"
 917 #define SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
 918 /* nothing changed between V3 and V4 */
 919
 920 /*********************************************************************
 921 *********************************************************************/
 922
 923 static bool init_samu_from_buffer_v0(struct samu *sampass, uint8_t *buf, uint32_t buflen)
 924 {
 925
 926         /* times are stored as 32bit integer
 927            take care on system with 64bit wide time_t
 928            --SSS */
 929         uint32_t        logon_time,
 930                 logoff_time,
 931                 kickoff_time,
 932                 pass_last_set_time,
 933                 pass_can_change_time,
 934                 pass_must_change_time;
 935         char *username = NULL;
 936         char *domain = NULL;
 937         char *nt_username = NULL;
 938         char *dir_drive = NULL;
 939         char *unknown_str = NULL;
 940         char *munged_dial = NULL;
 941         char *fullname = NULL;
 942         char *homedir = NULL;
 943         char *logon_script = NULL;
 944         char *profile_path = NULL;
 945         char *acct_desc = NULL;
 946         char *workstations = NULL;
 947         uint32_t        username_len, domain_len, nt_username_len,
 948                 dir_drive_len, unknown_str_len, munged_dial_len,
 949                 fullname_len, homedir_len, logon_script_len,
 950                 profile_path_len, acct_desc_len, workstations_len;
 951
 952         uint32_t        user_rid, group_rid, remove_me, hours_len, unknown_6;
 953         uint16_t        acct_ctrl, logon_divs;
 954         uint16_t        bad_password_count, logon_count;
 955         uint8_t *hours = NULL;
 956         uint8_t *lm_pw_ptr = NULL, *nt_pw_ptr = NULL;
 957         uint32_t                len = 0;
 958         uint32_t                lm_pw_len, nt_pw_len, hourslen;
 959         bool ret = True;
 960
 961         if(sampass == NULL || buf == NULL) {
 962                 DEBUG(0, ("init_samu_from_buffer_v0: NULL parameters found!\n"));
 963                 return False;
 964         }
 965
 966 /* SAMU_BUFFER_FORMAT_V0       "ddddddBBBBBBBBBBBBddBBwdwdBwwd" */
 967
 968         /* unpack the buffer into variables */
 969         len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V0,
 970                 &logon_time,                                            /* d */
 971                 &logoff_time,                                           /* d */
 972                 &kickoff_time,                                          /* d */
 973                 &pass_last_set_time,                                    /* d */
 974                 &pass_can_change_time,                                  /* d */
 975                 &pass_must_change_time,                                 /* d */
 976                 &username_len, &username,                               /* B */
 977                 &domain_len, &domain,                                   /* B */
 978                 &nt_username_len, &nt_username,                         /* B */
 979                 &fullname_len, &fullname,                               /* B */
 980                 &homedir_len, &homedir,                                 /* B */
 981                 &dir_drive_len, &dir_drive,                             /* B */
 982                 &logon_script_len, &logon_script,                       /* B */
 983                 &profile_path_len, &profile_path,                       /* B */
 984                 &acct_desc_len, &acct_desc,                             /* B */
 985                 &workstations_len, &workstations,                       /* B */
 986                 &unknown_str_len, &unknown_str,                         /* B */
 987                 &munged_dial_len, &munged_dial,                         /* B */
 988                 &user_rid,                                              /* d */
 989                 &group_rid,                                             /* d */
 990                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
 991                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
 992                 &acct_ctrl,                                             /* w */
 993                 &remove_me, /* remove on the next TDB_FORMAT upgarde */ /* d */
 994                 &logon_divs,                                            /* w */
 995                 &hours_len,                                             /* d */
 996                 &hourslen, &hours,                                      /* B */
 997                 &bad_password_count,                                    /* w */
 998                 &logon_count,                                           /* w */
 999                 &unknown_6);                                            /* d */
1000
1001         if (len == (uint32_t) -1)  {
1002                 ret = False;
1003                 goto done;
1004         }
1005
1006         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1007         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1008         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1009         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1010         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1011
1012         pdb_set_username(sampass, username, PDB_SET);
1013         pdb_set_domain(sampass, domain, PDB_SET);
1014         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1015         pdb_set_fullname(sampass, fullname, PDB_SET);
1016
1017         if (homedir) {
1018                 pdb_set_homedir(sampass, homedir, PDB_SET);
1019         }
1020         else {
1021                 pdb_set_homedir(sampass,
1022                         talloc_sub_basic(sampass, username, domain,
1023                                          lp_logon_home()),
1024                         PDB_DEFAULT);
1025         }
1026
1027         if (dir_drive)
1028                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1029         else {
1030                 pdb_set_dir_drive(sampass,
1031                         talloc_sub_basic(sampass, username, domain,
1032                                          lp_logon_drive()),
1033                         PDB_DEFAULT);
1034         }
1035
1036         if (logon_script)
1037                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
1038         else {
1039                 pdb_set_logon_script(sampass,
1040                         talloc_sub_basic(sampass, username, domain,
1041                                          lp_logon_script()),
1042                         PDB_DEFAULT);
1043         }
1044
1045         if (profile_path) {
1046                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
1047         } else {
1048                 pdb_set_profile_path(sampass,
1049                         talloc_sub_basic(sampass, username, domain,
1050                                          lp_logon_path()),
1051                         PDB_DEFAULT);
1052         }
1053
1054         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1055         pdb_set_workstations(sampass, workstations, PDB_SET);
1056         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1057
1058         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1059                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1060                         ret = False;
1061                         goto done;
1062                 }
1063         }
1064
1065         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1066                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1067                         ret = False;
1068                         goto done;
1069                 }
1070         }
1071
1072         pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1073         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1074         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1075         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1076         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1077         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1078         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1079         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1080         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1081         pdb_set_hours(sampass, hours, hours_len, PDB_SET);
1082
1083 done:
1084
1085         SAFE_FREE(username);
1086         SAFE_FREE(domain);
1087         SAFE_FREE(nt_username);
1088         SAFE_FREE(fullname);
1089         SAFE_FREE(homedir);
1090         SAFE_FREE(dir_drive);
1091         SAFE_FREE(logon_script);
1092         SAFE_FREE(profile_path);
1093         SAFE_FREE(acct_desc);
1094         SAFE_FREE(workstations);
1095         SAFE_FREE(munged_dial);
1096         SAFE_FREE(unknown_str);
1097         SAFE_FREE(lm_pw_ptr);
1098         SAFE_FREE(nt_pw_ptr);
1099         SAFE_FREE(hours);
1100
1101         return ret;
1102 }
1103
1104 /*********************************************************************
1105 *********************************************************************/
1106
1107 static bool init_samu_from_buffer_v1(struct samu *sampass, uint8_t *buf, uint32_t buflen)
1108 {
1109
1110         /* times are stored as 32bit integer
1111            take care on system with 64bit wide time_t
1112            --SSS */
1113         uint32_t        logon_time,
1114                 logoff_time,
1115                 kickoff_time,
1116                 bad_password_time,
1117                 pass_last_set_time,
1118                 pass_can_change_time,
1119                 pass_must_change_time;
1120         char *username = NULL;
1121         char *domain = NULL;
1122         char *nt_username = NULL;
1123         char *dir_drive = NULL;
1124         char *unknown_str = NULL;
1125         char *munged_dial = NULL;
1126         char *fullname = NULL;
1127         char *homedir = NULL;
1128         char *logon_script = NULL;
1129         char *profile_path = NULL;
1130         char *acct_desc = NULL;
1131         char *workstations = NULL;
1132         uint32_t        username_len, domain_len, nt_username_len,
1133                 dir_drive_len, unknown_str_len, munged_dial_len,
1134                 fullname_len, homedir_len, logon_script_len,
1135                 profile_path_len, acct_desc_len, workstations_len;
1136
1137         uint32_t        user_rid, group_rid, remove_me, hours_len, unknown_6;
1138         uint16_t        acct_ctrl, logon_divs;
1139         uint16_t        bad_password_count, logon_count;
1140         uint8_t *hours = NULL;
1141         uint8_t *lm_pw_ptr = NULL, *nt_pw_ptr = NULL;
1142         uint32_t                len = 0;
1143         uint32_t                lm_pw_len, nt_pw_len, hourslen;
1144         bool ret = True;
1145
1146         if(sampass == NULL || buf == NULL) {
1147                 DEBUG(0, ("init_samu_from_buffer_v1: NULL parameters found!\n"));
1148                 return False;
1149         }
1150
1151 /* SAMU_BUFFER_FORMAT_V1       "dddddddBBBBBBBBBBBBddBBwdwdBwwd" */
1152
1153         /* unpack the buffer into variables */
1154         len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V1,
1155                 &logon_time,                                            /* d */
1156                 &logoff_time,                                           /* d */
1157                 &kickoff_time,                                          /* d */
1158                 /* Change from V0 is addition of bad_password_time field. */
1159                 &bad_password_time,                                     /* d */
1160                 &pass_last_set_time,                                    /* d */
1161                 &pass_can_change_time,                                  /* d */
1162                 &pass_must_change_time,                                 /* d */
1163                 &username_len, &username,                               /* B */
1164                 &domain_len, &domain,                                   /* B */
1165                 &nt_username_len, &nt_username,                         /* B */
1166                 &fullname_len, &fullname,                               /* B */
1167                 &homedir_len, &homedir,                                 /* B */
1168                 &dir_drive_len, &dir_drive,                             /* B */
1169                 &logon_script_len, &logon_script,                       /* B */
1170                 &profile_path_len, &profile_path,                       /* B */
1171                 &acct_desc_len, &acct_desc,                             /* B */
1172                 &workstations_len, &workstations,                       /* B */
1173                 &unknown_str_len, &unknown_str,                         /* B */
1174                 &munged_dial_len, &munged_dial,                         /* B */
1175                 &user_rid,                                              /* d */
1176                 &group_rid,                                             /* d */
1177                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1178                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1179                 &acct_ctrl,                                             /* w */
1180                 &remove_me,                                             /* d */
1181                 &logon_divs,                                            /* w */
1182                 &hours_len,                                             /* d */
1183                 &hourslen, &hours,                                      /* B */
1184                 &bad_password_count,                                    /* w */
1185                 &logon_count,                                           /* w */
1186                 &unknown_6);                                            /* d */
1187
1188         if (len == (uint32_t) -1)  {
1189                 ret = False;
1190                 goto done;
1191         }
1192
1193         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1194         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1195         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1196
1197         /* Change from V0 is addition of bad_password_time field. */
1198         pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
1199         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1200         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1201
1202         pdb_set_username(sampass, username, PDB_SET);
1203         pdb_set_domain(sampass, domain, PDB_SET);
1204         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1205         pdb_set_fullname(sampass, fullname, PDB_SET);
1206
1207         if (homedir) {
1208                 pdb_set_homedir(sampass, homedir, PDB_SET);
1209         }
1210         else {
1211                 pdb_set_homedir(sampass,
1212                         talloc_sub_basic(sampass, username, domain,
1213                                          lp_logon_home()),
1214                         PDB_DEFAULT);
1215         }
1216
1217         if (dir_drive)
1218                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1219         else {
1220                 pdb_set_dir_drive(sampass,
1221                         talloc_sub_basic(sampass, username, domain,
1222                                          lp_logon_drive()),
1223                         PDB_DEFAULT);
1224         }
1225
1226         if (logon_script)
1227                 pdb_set_logon_script(sampass, logon_script, PDB_SET);
1228         else {
1229                 pdb_set_logon_script(sampass,
1230                         talloc_sub_basic(sampass, username, domain,
1231                                          lp_logon_script()),
1232                         PDB_DEFAULT);
1233         }
1234
1235         if (profile_path) {
1236                 pdb_set_profile_path(sampass, profile_path, PDB_SET);
1237         } else {
1238                 pdb_set_profile_path(sampass,
1239                         talloc_sub_basic(sampass, username, domain,
1240                                          lp_logon_path()),
1241                         PDB_DEFAULT);
1242         }
1243
1244         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1245         pdb_set_workstations(sampass, workstations, PDB_SET);
1246         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1247
1248         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1249                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1250                         ret = False;
1251                         goto done;
1252                 }
1253         }
1254
1255         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1256                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1257                         ret = False;
1258                         goto done;
1259                 }
1260         }
1261
1262         pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1263
1264         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1265         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1266         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1267         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1268         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1269         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1270         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1271         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1272         pdb_set_hours(sampass, hours, hours_len, PDB_SET);
1273
1274 done:
1275
1276         SAFE_FREE(username);
1277         SAFE_FREE(domain);
1278         SAFE_FREE(nt_username);
1279         SAFE_FREE(fullname);
1280         SAFE_FREE(homedir);
1281         SAFE_FREE(dir_drive);
1282         SAFE_FREE(logon_script);
1283         SAFE_FREE(profile_path);
1284         SAFE_FREE(acct_desc);
1285         SAFE_FREE(workstations);
1286         SAFE_FREE(munged_dial);
1287         SAFE_FREE(unknown_str);
1288         SAFE_FREE(lm_pw_ptr);
1289         SAFE_FREE(nt_pw_ptr);
1290         SAFE_FREE(hours);
1291
1292         return ret;
1293 }
1294
1295 static bool init_samu_from_buffer_v2(struct samu *sampass, uint8_t *buf, uint32_t buflen)
1296 {
1297
1298         /* times are stored as 32bit integer
1299            take care on system with 64bit wide time_t
1300            --SSS */
1301         uint32_t        logon_time,
1302                 logoff_time,
1303                 kickoff_time,
1304                 bad_password_time,
1305                 pass_last_set_time,
1306                 pass_can_change_time,
1307                 pass_must_change_time;
1308         char *username = NULL;
1309         char *domain = NULL;
1310         char *nt_username = NULL;
1311         char *dir_drive = NULL;
1312         char *unknown_str = NULL;
1313         char *munged_dial = NULL;
1314         char *fullname = NULL;
1315         char *homedir = NULL;
1316         char *logon_script = NULL;
1317         char *profile_path = NULL;
1318         char *acct_desc = NULL;
1319         char *workstations = NULL;
1320         uint32_t        username_len, domain_len, nt_username_len,
1321                 dir_drive_len, unknown_str_len, munged_dial_len,
1322                 fullname_len, homedir_len, logon_script_len,
1323                 profile_path_len, acct_desc_len, workstations_len;
1324
1325         uint32_t        user_rid, group_rid, hours_len, unknown_6;
1326         uint16_t        acct_ctrl, logon_divs;
1327         uint16_t        bad_password_count, logon_count;
1328         uint8_t *hours = NULL;
1329         uint8_t *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
1330         uint32_t                len = 0;
1331         uint32_t                lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
1332         uint32_t pwHistLen = 0;
1333         bool ret = True;
1334         fstring tmp_string;
1335         bool expand_explicit = lp_passdb_expand_explicit();
1336
1337         if(sampass == NULL || buf == NULL) {
1338                 DEBUG(0, ("init_samu_from_buffer_v2: NULL parameters found!\n"));
1339                 return False;
1340         }
1341
1342 /* SAMU_BUFFER_FORMAT_V2       "dddddddBBBBBBBBBBBBddBBBwwdBwwd" */
1343
1344         /* unpack the buffer into variables */
1345         len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V2,
1346                 &logon_time,                                            /* d */
1347                 &logoff_time,                                           /* d */
1348                 &kickoff_time,                                          /* d */
1349                 &bad_password_time,                                     /* d */
1350                 &pass_last_set_time,                                    /* d */
1351                 &pass_can_change_time,                                  /* d */
1352                 &pass_must_change_time,                                 /* d */
1353                 &username_len, &username,                               /* B */
1354                 &domain_len, &domain,                                   /* B */
1355                 &nt_username_len, &nt_username,                         /* B */
1356                 &fullname_len, &fullname,                               /* B */
1357                 &homedir_len, &homedir,                                 /* B */
1358                 &dir_drive_len, &dir_drive,                             /* B */
1359                 &logon_script_len, &logon_script,                       /* B */
1360                 &profile_path_len, &profile_path,                       /* B */
1361                 &acct_desc_len, &acct_desc,                             /* B */
1362                 &workstations_len, &workstations,                       /* B */
1363                 &unknown_str_len, &unknown_str,                         /* B */
1364                 &munged_dial_len, &munged_dial,                         /* B */
1365                 &user_rid,                                              /* d */
1366                 &group_rid,                                             /* d */
1367                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1368                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1369                 /* Change from V1 is addition of password history field. */
1370                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
1371                 &acct_ctrl,                                             /* w */
1372                 /* Also "remove_me" field was removed. */
1373                 &logon_divs,                                            /* w */
1374                 &hours_len,                                             /* d */
1375                 &hourslen, &hours,                                      /* B */
1376                 &bad_password_count,                                    /* w */
1377                 &logon_count,                                           /* w */
1378                 &unknown_6);                                            /* d */
1379
1380         if (len == (uint32_t) -1)  {
1381                 ret = False;
1382                 goto done;
1383         }
1384
1385         pdb_set_logon_time(sampass, logon_time, PDB_SET);
1386         pdb_set_logoff_time(sampass, logoff_time, PDB_SET);
1387         pdb_set_kickoff_time(sampass, kickoff_time, PDB_SET);
1388         pdb_set_bad_password_time(sampass, bad_password_time, PDB_SET);
1389         pdb_set_pass_can_change_time(sampass, pass_can_change_time, PDB_SET);
1390         pdb_set_pass_last_set_time(sampass, pass_last_set_time, PDB_SET);
1391
1392         pdb_set_username(sampass, username, PDB_SET);
1393         pdb_set_domain(sampass, domain, PDB_SET);
1394         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1395         pdb_set_fullname(sampass, fullname, PDB_SET);
1396
1397         if (homedir) {
1398                 fstrcpy( tmp_string, homedir );
1399                 if (expand_explicit) {
1400                         standard_sub_basic( username, domain, tmp_string,
1401                                             sizeof(tmp_string) );
1402                 }
1403                 pdb_set_homedir(sampass, tmp_string, PDB_SET);
1404         }
1405         else {
1406                 pdb_set_homedir(sampass,
1407                         talloc_sub_basic(sampass, username, domain,
1408                                          lp_logon_home()),
1409                         PDB_DEFAULT);
1410         }
1411
1412         if (dir_drive)
1413                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1414         else
1415                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
1416
1417         if (logon_script) {
1418                 fstrcpy( tmp_string, logon_script );
1419                 if (expand_explicit) {
1420                         standard_sub_basic( username, domain, tmp_string,
1421                                             sizeof(tmp_string) );
1422                 }
1423                 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
1424         }
1425         else {
1426                 pdb_set_logon_script(sampass,
1427                         talloc_sub_basic(sampass, username, domain,
1428                                          lp_logon_script()),
1429                         PDB_DEFAULT);
1430         }
1431
1432         if (profile_path) {
1433                 fstrcpy( tmp_string, profile_path );
1434                 if (expand_explicit) {
1435                         standard_sub_basic( username, domain, tmp_string,
1436                                             sizeof(tmp_string) );
1437                 }
1438                 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
1439         }
1440         else {
1441                 pdb_set_profile_path(sampass,
1442                         talloc_sub_basic(sampass, username, domain,
1443                                          lp_logon_path()),
1444                         PDB_DEFAULT);
1445         }
1446
1447         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1448         pdb_set_workstations(sampass, workstations, PDB_SET);
1449         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1450
1451         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1452                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1453                         ret = False;
1454                         goto done;
1455                 }
1456         }
1457
1458         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1459                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1460                         ret = False;
1461                         goto done;
1462                 }
1463         }
1464
1465         /* Change from V1 is addition of password history field. */
1466         pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY, &pwHistLen);
1467         if (pwHistLen) {
1468                 uint8_t *pw_hist = SMB_MALLOC_ARRAY(uint8_t, pwHistLen * PW_HISTORY_ENTRY_LEN);
1469                 if (!pw_hist) {
1470                         ret = False;
1471                         goto done;
1472                 }
1473                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1474                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1475                         int i;
1476                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1477                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1478                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1479                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1480                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1481                                         PW_HISTORY_ENTRY_LEN);
1482                         }
1483                 }
1484                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1485                         SAFE_FREE(pw_hist);
1486                         ret = False;
1487                         goto done;
1488                 }
1489                 SAFE_FREE(pw_hist);
1490         } else {
1491                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1492         }
1493
1494         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1495         pdb_set_group_sid_from_rid(sampass, group_rid, PDB_SET);
1496         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1497         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1498         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1499         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1500         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1501         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1502         pdb_set_hours(sampass, hours, hours_len, PDB_SET);
1503
1504 done:
1505
1506         SAFE_FREE(username);
1507         SAFE_FREE(domain);
1508         SAFE_FREE(nt_username);
1509         SAFE_FREE(fullname);
1510         SAFE_FREE(homedir);
1511         SAFE_FREE(dir_drive);
1512         SAFE_FREE(logon_script);
1513         SAFE_FREE(profile_path);
1514         SAFE_FREE(acct_desc);
1515         SAFE_FREE(workstations);
1516         SAFE_FREE(munged_dial);
1517         SAFE_FREE(unknown_str);
1518         SAFE_FREE(lm_pw_ptr);
1519         SAFE_FREE(nt_pw_ptr);
1520         SAFE_FREE(nt_pw_hist_ptr);
1521         SAFE_FREE(hours);
1522
1523         return ret;
1524 }
1525
1526 /*********************************************************************
1527 *********************************************************************/
1528
1529 static bool init_samu_from_buffer_v3(struct samu *sampass, uint8_t *buf, uint32_t buflen)
1530 {
1531
1532         /* times are stored as 32bit integer
1533            take care on system with 64bit wide time_t
1534            --SSS */
1535         uint32_t        logon_time,
1536                 logoff_time,
1537                 kickoff_time,
1538                 bad_password_time,
1539                 pass_last_set_time,
1540                 pass_can_change_time,
1541                 pass_must_change_time;
1542         char *username = NULL;
1543         char *domain = NULL;
1544         char *nt_username = NULL;
1545         char *dir_drive = NULL;
1546         char *comment = NULL;
1547         char *munged_dial = NULL;
1548         char *fullname = NULL;
1549         char *homedir = NULL;
1550         char *logon_script = NULL;
1551         char *profile_path = NULL;
1552         char *acct_desc = NULL;
1553         char *workstations = NULL;
1554         uint32_t        username_len, domain_len, nt_username_len,
1555                 dir_drive_len, comment_len, munged_dial_len,
1556                 fullname_len, homedir_len, logon_script_len,
1557                 profile_path_len, acct_desc_len, workstations_len;
1558
1559         uint32_t        user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
1560         uint16_t  logon_divs;
1561         uint16_t        bad_password_count, logon_count;
1562         uint8_t *hours = NULL;
1563         uint8_t *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
1564         uint32_t                len = 0;
1565         uint32_t                lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
1566         uint32_t pwHistLen = 0;
1567         bool ret = True;
1568         fstring tmp_string;
1569         bool expand_explicit = lp_passdb_expand_explicit();
1570
1571         if(sampass == NULL || buf == NULL) {
1572                 DEBUG(0, ("init_samu_from_buffer_v3: NULL parameters found!\n"));
1573                 return False;
1574         }
1575
1576 /* SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1577
1578         /* unpack the buffer into variables */
1579         len = tdb_unpack (buf, buflen, SAMU_BUFFER_FORMAT_V3,
1580                 &logon_time,                                            /* d */
1581                 &logoff_time,                                           /* d */
1582                 &kickoff_time,                                          /* d */
1583                 &bad_password_time,                                     /* d */
1584                 &pass_last_set_time,                                    /* d */
1585                 &pass_can_change_time,                                  /* d */
1586                 &pass_must_change_time,                                 /* d */
1587                 &username_len, &username,                               /* B */
1588                 &domain_len, &domain,                                   /* B */
1589                 &nt_username_len, &nt_username,                         /* B */
1590                 &fullname_len, &fullname,                               /* B */
1591                 &homedir_len, &homedir,                                 /* B */
1592                 &dir_drive_len, &dir_drive,                             /* B */
1593                 &logon_script_len, &logon_script,                       /* B */
1594                 &profile_path_len, &profile_path,                       /* B */
1595                 &acct_desc_len, &acct_desc,                             /* B */
1596                 &workstations_len, &workstations,                       /* B */
1597                 &comment_len, &comment,                                 /* B */
1598                 &munged_dial_len, &munged_dial,                         /* B */
1599                 &user_rid,                                              /* d */
1600                 &group_rid,                                             /* d */
1601                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
1602                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
1603                 /* Change from V1 is addition of password history field. */
1604                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
1605                 /* Change from V2 is the uint32_t acb_mask */
1606                 &acct_ctrl,                                             /* d */
1607                 /* Also "remove_me" field was removed. */
1608                 &logon_divs,                                            /* w */
1609                 &hours_len,                                             /* d */
1610                 &hourslen, &hours,                                      /* B */
1611                 &bad_password_count,                                    /* w */
1612                 &logon_count,                                           /* w */
1613                 &unknown_6);                                            /* d */
1614
1615         if (len == (uint32_t) -1)  {
1616                 ret = False;
1617                 goto done;
1618         }
1619
1620         pdb_set_logon_time(sampass, convert_uint32_t_to_time_t(logon_time), PDB_SET);
1621         pdb_set_logoff_time(sampass, convert_uint32_t_to_time_t(logoff_time), PDB_SET);
1622         pdb_set_kickoff_time(sampass, convert_uint32_t_to_time_t(kickoff_time), PDB_SET);
1623         pdb_set_bad_password_time(sampass, convert_uint32_t_to_time_t(bad_password_time), PDB_SET);
1624         pdb_set_pass_can_change_time(sampass, convert_uint32_t_to_time_t(pass_can_change_time), PDB_SET);
1625         pdb_set_pass_last_set_time(sampass, convert_uint32_t_to_time_t(pass_last_set_time), PDB_SET);
1626
1627         pdb_set_username(sampass, username, PDB_SET);
1628         pdb_set_domain(sampass, domain, PDB_SET);
1629         pdb_set_nt_username(sampass, nt_username, PDB_SET);
1630         pdb_set_fullname(sampass, fullname, PDB_SET);
1631
1632         if (homedir) {
1633                 fstrcpy( tmp_string, homedir );
1634                 if (expand_explicit) {
1635                         standard_sub_basic( username, domain, tmp_string,
1636                                             sizeof(tmp_string) );
1637                 }
1638                 pdb_set_homedir(sampass, tmp_string, PDB_SET);
1639         }
1640         else {
1641                 pdb_set_homedir(sampass,
1642                         talloc_sub_basic(sampass, username, domain,
1643                                          lp_logon_home()),
1644                         PDB_DEFAULT);
1645         }
1646
1647         if (dir_drive)
1648                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
1649         else
1650                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
1651
1652         if (logon_script) {
1653                 fstrcpy( tmp_string, logon_script );
1654                 if (expand_explicit) {
1655                         standard_sub_basic( username, domain, tmp_string,
1656                                             sizeof(tmp_string) );
1657                 }
1658                 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
1659         }
1660         else {
1661                 pdb_set_logon_script(sampass,
1662                         talloc_sub_basic(sampass, username, domain,
1663                                          lp_logon_script()),
1664                         PDB_DEFAULT);
1665         }
1666
1667         if (profile_path) {
1668                 fstrcpy( tmp_string, profile_path );
1669                 if (expand_explicit) {
1670                         standard_sub_basic( username, domain, tmp_string,
1671                                             sizeof(tmp_string) );
1672                 }
1673                 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
1674         }
1675         else {
1676                 pdb_set_profile_path(sampass,
1677                         talloc_sub_basic(sampass, username, domain, lp_logon_path()),
1678                         PDB_DEFAULT);
1679         }
1680
1681         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
1682         pdb_set_comment(sampass, comment, PDB_SET);
1683         pdb_set_workstations(sampass, workstations, PDB_SET);
1684         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
1685
1686         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1687                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1688                         ret = False;
1689                         goto done;
1690                 }
1691         }
1692
1693         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1694                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1695                         ret = False;
1696                         goto done;
1697                 }
1698         }
1699
1700         pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY, &pwHistLen);
1701         if (pwHistLen) {
1702                 uint8_t *pw_hist = (uint8_t *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
1703                 if (!pw_hist) {
1704                         ret = False;
1705                         goto done;
1706                 }
1707                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1708                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1709                         int i;
1710                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1711                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1712                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1713                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1714                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1715                                         PW_HISTORY_ENTRY_LEN);
1716                         }
1717                 }
1718                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1719                         SAFE_FREE(pw_hist);
1720                         ret = False;
1721                         goto done;
1722                 }
1723                 SAFE_FREE(pw_hist);
1724         } else {
1725                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1726         }
1727
1728         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1729         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1730         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1731         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1732         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1733         /* Change from V2 is the uint32_t acct_ctrl */
1734         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1735         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1736         pdb_set_hours(sampass, hours, hours_len, PDB_SET);
1737
1738 done:
1739
1740         SAFE_FREE(username);
1741         SAFE_FREE(domain);
1742         SAFE_FREE(nt_username);
1743         SAFE_FREE(fullname);
1744         SAFE_FREE(homedir);
1745         SAFE_FREE(dir_drive);
1746         SAFE_FREE(logon_script);
1747         SAFE_FREE(profile_path);
1748         SAFE_FREE(acct_desc);
1749         SAFE_FREE(workstations);
1750         SAFE_FREE(munged_dial);
1751         SAFE_FREE(comment);
1752         SAFE_FREE(lm_pw_ptr);
1753         SAFE_FREE(nt_pw_ptr);
1754         SAFE_FREE(nt_pw_hist_ptr);
1755         SAFE_FREE(hours);
1756
1757         return ret;
1758 }
1759
1760 /*********************************************************************
1761 *********************************************************************/
1762
1763 static uint32_t init_buffer_from_samu_v3 (uint8_t **buf, struct samu *sampass, bool size_only)
1764 {
1765         size_t len, buflen;
1766
1767         /* times are stored as 32bit integer
1768            take care on system with 64bit wide time_t
1769            --SSS */
1770         uint32_t        logon_time,
1771                 logoff_time,
1772                 kickoff_time,
1773                 bad_password_time,
1774                 pass_last_set_time,
1775                 pass_can_change_time,
1776                 pass_must_change_time;
1777
1778         uint32_t  user_rid, group_rid;
1779
1780         const char *username;
1781         const char *domain;
1782         const char *nt_username;
1783         const char *dir_drive;
1784         const char *comment;
1785         const char *munged_dial;
1786         const char *fullname;
1787         const char *homedir;
1788         const char *logon_script;
1789         const char *profile_path;
1790         const char *acct_desc;
1791         const char *workstations;
1792         uint32_t        username_len, domain_len, nt_username_len,
1793                 dir_drive_len, comment_len, munged_dial_len,
1794                 fullname_len, homedir_len, logon_script_len,
1795                 profile_path_len, acct_desc_len, workstations_len;
1796
1797         const uint8_t *lm_pw;
1798         const uint8_t *nt_pw;
1799         const uint8_t *nt_pw_hist;
1800         uint32_t        lm_pw_len = 16;
1801         uint32_t        nt_pw_len = 16;
1802         uint32_t  nt_pw_hist_len;
1803         uint32_t pwHistLen = 0;
1804
1805         *buf = NULL;
1806         buflen = 0;
1807
1808         logon_time = convert_time_t_to_uint32_t(pdb_get_logon_time(sampass));
1809         logoff_time = convert_time_t_to_uint32_t(pdb_get_logoff_time(sampass));
1810         kickoff_time = convert_time_t_to_uint32_t(pdb_get_kickoff_time(sampass));
1811         bad_password_time = convert_time_t_to_uint32_t(pdb_get_bad_password_time(sampass));
1812         pass_can_change_time = convert_time_t_to_uint32_t(pdb_get_pass_can_change_time_noncalc(sampass));
1813         pass_must_change_time = convert_time_t_to_uint32_t(pdb_get_pass_must_change_time(sampass));
1814         pass_last_set_time = convert_time_t_to_uint32_t(pdb_get_pass_last_set_time(sampass));
1815
1816         user_rid = pdb_get_user_rid(sampass);
1817         group_rid = pdb_get_group_rid(sampass);
1818
1819         username = pdb_get_username(sampass);
1820         if (username) {
1821                 username_len = strlen(username) +1;
1822         } else {
1823                 username_len = 0;
1824         }
1825
1826         domain = pdb_get_domain(sampass);
1827         if (domain) {
1828                 domain_len = strlen(domain) +1;
1829         } else {
1830                 domain_len = 0;
1831         }
1832
1833         nt_username = pdb_get_nt_username(sampass);
1834         if (nt_username) {
1835                 nt_username_len = strlen(nt_username) +1;
1836         } else {
1837                 nt_username_len = 0;
1838         }
1839
1840         fullname = pdb_get_fullname(sampass);
1841         if (fullname) {
1842                 fullname_len = strlen(fullname) +1;
1843         } else {
1844                 fullname_len = 0;
1845         }
1846
1847         /*
1848          * Only updates fields which have been set (not defaults from smb.conf)
1849          */
1850
1851         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1852                 dir_drive = pdb_get_dir_drive(sampass);
1853         } else {
1854                 dir_drive = NULL;
1855         }
1856         if (dir_drive) {
1857                 dir_drive_len = strlen(dir_drive) +1;
1858         } else {
1859                 dir_drive_len = 0;
1860         }
1861
1862         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1863                 homedir = pdb_get_homedir(sampass);
1864         } else {
1865                 homedir = NULL;
1866         }
1867         if (homedir) {
1868                 homedir_len = strlen(homedir) +1;
1869         } else {
1870                 homedir_len = 0;
1871         }
1872
1873         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1874                 logon_script = pdb_get_logon_script(sampass);
1875         } else {
1876                 logon_script = NULL;
1877         }
1878         if (logon_script) {
1879                 logon_script_len = strlen(logon_script) +1;
1880         } else {
1881                 logon_script_len = 0;
1882         }
1883
1884         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1885                 profile_path = pdb_get_profile_path(sampass);
1886         } else {
1887                 profile_path = NULL;
1888         }
1889         if (profile_path) {
1890                 profile_path_len = strlen(profile_path) +1;
1891         } else {
1892                 profile_path_len = 0;
1893         }
1894
1895         lm_pw = pdb_get_lanman_passwd(sampass);
1896         if (!lm_pw) {
1897                 lm_pw_len = 0;
1898         }
1899
1900         nt_pw = pdb_get_nt_passwd(sampass);
1901         if (!nt_pw) {
1902                 nt_pw_len = 0;
1903         }
1904
1905         pdb_get_account_policy(PDB_POLICY_PASSWORD_HISTORY, &pwHistLen);
1906         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
1907         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1908                 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1909         } else {
1910                 nt_pw_hist_len = 0;
1911         }
1912
1913         acct_desc = pdb_get_acct_desc(sampass);
1914         if (acct_desc) {
1915                 acct_desc_len = strlen(acct_desc) +1;
1916         } else {
1917                 acct_desc_len = 0;
1918         }
1919
1920         workstations = pdb_get_workstations(sampass);
1921         if (workstations) {
1922                 workstations_len = strlen(workstations) +1;
1923         } else {
1924                 workstations_len = 0;
1925         }
1926
1927         comment = pdb_get_comment(sampass);
1928         if (comment) {
1929                 comment_len = strlen(comment) +1;
1930         } else {
1931                 comment_len = 0;
1932         }
1933
1934         munged_dial = pdb_get_munged_dial(sampass);
1935         if (munged_dial) {
1936                 munged_dial_len = strlen(munged_dial) +1;
1937         } else {
1938                 munged_dial_len = 0;
1939         }
1940
1941 /* SAMU_BUFFER_FORMAT_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1942
1943         /* one time to get the size needed */
1944         len = tdb_pack(NULL, 0,  SAMU_BUFFER_FORMAT_V3,
1945                 logon_time,                             /* d */
1946                 logoff_time,                            /* d */
1947                 kickoff_time,                           /* d */
1948                 bad_password_time,                      /* d */
1949                 pass_last_set_time,                     /* d */
1950                 pass_can_change_time,                   /* d */
1951                 pass_must_change_time,                  /* d */
1952                 username_len, username,                 /* B */
1953                 domain_len, domain,                     /* B */
1954                 nt_username_len, nt_username,           /* B */
1955                 fullname_len, fullname,                 /* B */
1956                 homedir_len, homedir,                   /* B */
1957                 dir_drive_len, dir_drive,               /* B */
1958                 logon_script_len, logon_script,         /* B */
1959                 profile_path_len, profile_path,         /* B */
1960                 acct_desc_len, acct_desc,               /* B */
1961                 workstations_len, workstations,         /* B */
1962                 comment_len, comment,                   /* B */
1963                 munged_dial_len, munged_dial,           /* B */
1964                 user_rid,                               /* d */
1965                 group_rid,                              /* d */
1966                 lm_pw_len, lm_pw,                       /* B */
1967                 nt_pw_len, nt_pw,                       /* B */
1968                 nt_pw_hist_len, nt_pw_hist,             /* B */
1969                 pdb_get_acct_ctrl(sampass),             /* d */
1970                 pdb_get_logon_divs(sampass),            /* w */
1971                 pdb_get_hours_len(sampass),             /* d */
1972                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1973                 pdb_get_bad_password_count(sampass),    /* w */
1974                 pdb_get_logon_count(sampass),           /* w */
1975                 pdb_get_unknown_6(sampass));            /* d */
1976
1977         if (size_only) {
1978                 return buflen;
1979         }
1980
1981         /* malloc the space needed */
1982         if ( (*buf=(uint8_t*)SMB_MALLOC(len)) == NULL) {
1983                 DEBUG(0,("init_buffer_from_samu_v3: Unable to malloc() memory for buffer!\n"));
1984                 return (-1);
1985         }
1986
1987         /* now for the real call to tdb_pack() */
1988         buflen = tdb_pack(*buf, len,  SAMU_BUFFER_FORMAT_V3,
1989                 logon_time,                             /* d */
1990                 logoff_time,                            /* d */
1991                 kickoff_time,                           /* d */
1992                 bad_password_time,                      /* d */
1993                 pass_last_set_time,                     /* d */
1994                 pass_can_change_time,                   /* d */
1995                 pass_must_change_time,                  /* d */
1996                 username_len, username,                 /* B */
1997                 domain_len, domain,                     /* B */
1998                 nt_username_len, nt_username,           /* B */
1999                 fullname_len, fullname,                 /* B */
2000                 homedir_len, homedir,                   /* B */
2001                 dir_drive_len, dir_drive,               /* B */
2002                 logon_script_len, logon_script,         /* B */
2003                 profile_path_len, profile_path,         /* B */
2004                 acct_desc_len, acct_desc,               /* B */
2005                 workstations_len, workstations,         /* B */
2006                 comment_len, comment,                   /* B */
2007                 munged_dial_len, munged_dial,           /* B */
2008                 user_rid,                               /* d */
2009                 group_rid,                              /* d */
2010                 lm_pw_len, lm_pw,                       /* B */
2011                 nt_pw_len, nt_pw,                       /* B */
2012                 nt_pw_hist_len, nt_pw_hist,             /* B */
2013                 pdb_get_acct_ctrl(sampass),             /* d */
2014                 pdb_get_logon_divs(sampass),            /* w */
2015                 pdb_get_hours_len(sampass),             /* d */
2016                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
2017                 pdb_get_bad_password_count(sampass),    /* w */
2018                 pdb_get_logon_count(sampass),           /* w */
2019                 pdb_get_unknown_6(sampass));            /* d */
2020
2021         /* check to make sure we got it correct */
2022         if (buflen != len) {
2023                 DEBUG(0, ("init_buffer_from_samu_v3: something odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
2024                           (unsigned long)buflen, (unsigned long)len));
2025                 /* error */
2026                 SAFE_FREE (*buf);
2027                 return (-1);
2028         }
2029
2030         return (buflen);
2031 }
2032
2033 static bool init_samu_from_buffer_v4(struct samu *sampass, uint8_t *buf, uint32_t buflen)
2034 {
2035         /* nothing changed between V3 and V4 */
2036         return init_samu_from_buffer_v3(sampass, buf, buflen);
2037 }
2038
2039 static uint32_t init_buffer_from_samu_v4(uint8_t **buf, struct samu *sampass, bool size_only)
2040 {
2041         /* nothing changed between V3 and V4 */
2042         return init_buffer_from_samu_v3(buf, sampass, size_only);
2043 }
2044
2045 /**********************************************************************
2046  Intialize a struct samu struct from a BYTE buffer of size len
2047  *********************************************************************/
2048
2049 bool init_samu_from_buffer(struct samu *sampass, uint32_t level,
2050                            uint8_t *buf, uint32_t buflen)
2051 {
2052         switch (level) {
2053         case SAMU_BUFFER_V0:
2054                 return init_samu_from_buffer_v0(sampass, buf, buflen);
2055         case SAMU_BUFFER_V1:
2056                 return init_samu_from_buffer_v1(sampass, buf, buflen);
2057         case SAMU_BUFFER_V2:
2058                 return init_samu_from_buffer_v2(sampass, buf, buflen);
2059         case SAMU_BUFFER_V3:
2060                 return init_samu_from_buffer_v3(sampass, buf, buflen);
2061         case SAMU_BUFFER_V4:
2062                 return init_samu_from_buffer_v4(sampass, buf, buflen);
2063         }
2064
2065         return false;
2066 }
2067
2068 /**********************************************************************
2069  Intialize a BYTE buffer from a struct samu struct
2070  *********************************************************************/
2071
2072 uint32_t init_buffer_from_samu (uint8_t **buf, struct samu *sampass, bool size_only)
2073 {
2074         return init_buffer_from_samu_v4(buf, sampass, size_only);
2075 }
2076
2077 /*********************************************************************
2078 *********************************************************************/
2079
2080 bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
2081 {
2082         uint8_t *buf = NULL;
2083         int len;
2084
2085         len = init_buffer_from_samu(&buf, src, False);
2086         if (len == -1 || !buf) {
2087                 SAFE_FREE(buf);
2088                 return False;
2089         }
2090
2091         if (!init_samu_from_buffer( dst, SAMU_BUFFER_LATEST, buf, len )) {
2092                 free(buf);
2093                 return False;
2094         }
2095
2096         dst->methods = src->methods;
2097
2098         if ( src->unix_pw ) {
2099                 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
2100                 if (!dst->unix_pw) {
2101                         free(buf);
2102                         return False;
2103                 }
2104         }
2105
2106         if (src->group_sid) {
2107                 pdb_set_group_sid(dst, src->group_sid, PDB_SET);
2108         }
2109
2110         free(buf);
2111         return True;
2112 }
2113
2114 /*********************************************************************
2115  Update the bad password count checking the PDB_POLICY_RESET_COUNT_TIME
2116 *********************************************************************/
2117
2118 bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
2119 {
2120         time_t LastBadPassword;
2121         uint16_t BadPasswordCount;
2122         uint32_t resettime;
2123         bool res;
2124
2125         BadPasswordCount = pdb_get_bad_password_count(sampass);
2126         if (!BadPasswordCount) {
2127                 DEBUG(9, ("No bad password attempts.\n"));
2128                 return True;
2129         }
2130
2131         become_root();
2132         res = pdb_get_account_policy(PDB_POLICY_RESET_COUNT_TIME, &resettime);
2133         unbecome_root();
2134
2135         if (!res) {
2136                 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
2137                 return False;
2138         }
2139
2140         /* First, check if there is a reset time to compare */
2141         if ((resettime == (uint32_t) -1) || (resettime == 0)) {
2142                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
2143                 return True;
2144         }
2145
2146         LastBadPassword = pdb_get_bad_password_time(sampass);
2147         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
2148                    (uint32_t) LastBadPassword, resettime, (uint32_t)time(NULL)));
2149         if (time(NULL) > (LastBadPassword + convert_uint32_t_to_time_t(resettime)*60)){
2150                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
2151                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
2152                 if (updated) {
2153                         *updated = True;
2154                 }
2155         }
2156
2157         return True;
2158 }
2159
2160 /*********************************************************************
2161  Update the ACB_AUTOLOCK flag checking the PDB_POLICY_LOCK_ACCOUNT_DURATION
2162 *********************************************************************/
2163
2164 bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
2165 {
2166         uint32_t duration;
2167         time_t LastBadPassword;
2168         bool res;
2169
2170         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
2171                 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
2172                         pdb_get_username(sampass)));
2173                 return True;
2174         }
2175
2176         become_root();
2177         res = pdb_get_account_policy(PDB_POLICY_LOCK_ACCOUNT_DURATION, &duration);
2178         unbecome_root();
2179
2180         if (!res) {
2181                 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
2182                 return False;
2183         }
2184
2185         /* First, check if there is a duration to compare */
2186         if ((duration == (uint32_t) -1)  || (duration == 0)) {
2187                 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
2188                 return True;
2189         }
2190
2191         LastBadPassword = pdb_get_bad_password_time(sampass);
2192         DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
2193                   pdb_get_username(sampass), (uint32_t)LastBadPassword, duration*60, (uint32_t)time(NULL)));
2194
2195         if (LastBadPassword == (time_t)0) {
2196                 DEBUG(1,("pdb_update_autolock_flag: Account %s "
2197                          "administratively locked out with no bad password "
2198                          "time. Leaving locked out.\n",
2199                          pdb_get_username(sampass) ));
2200                 return True;
2201         }
2202
2203         if ((time(NULL) > (LastBadPassword + convert_uint32_t_to_time_t(duration) * 60))) {
2204                 pdb_set_acct_ctrl(sampass,
2205                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
2206                                   PDB_CHANGED);
2207                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
2208                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
2209                 if (updated) {
2210                         *updated = True;
2211                 }
2212         }
2213
2214         return True;
2215 }
2216
2217 /*********************************************************************
2218  Increment the bad_password_count
2219 *********************************************************************/
2220
2221 bool pdb_increment_bad_password_count(struct samu *sampass)
2222 {
2223         uint32_t account_policy_lockout;
2224         bool autolock_updated = False, badpw_updated = False;
2225         bool ret;
2226
2227         /* Retrieve the account lockout policy */
2228         become_root();
2229         ret = pdb_get_account_policy(PDB_POLICY_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
2230         unbecome_root();
2231         if ( !ret ) {
2232                 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
2233                 return False;
2234         }
2235
2236         /* If there is no policy, we don't need to continue checking */
2237         if (!account_policy_lockout) {
2238                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
2239                 return True;
2240         }
2241
2242         /* Check if the autolock needs to be cleared */
2243         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
2244                 return False;
2245
2246         /* Check if the badpw count needs to be reset */
2247         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
2248                 return False;
2249
2250         /*
2251           Ok, now we can assume that any resetting that needs to be
2252           done has been done, and just get on with incrementing
2253           and autolocking if necessary
2254         */
2255
2256         pdb_set_bad_password_count(sampass,
2257                                    pdb_get_bad_password_count(sampass)+1,
2258                                    PDB_CHANGED);
2259         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
2260
2261
2262         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
2263                 return True;
2264
2265         if (!pdb_set_acct_ctrl(sampass,
2266                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
2267                                PDB_CHANGED)) {
2268                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
2269                 return False;
2270         }
2271
2272         return True;
2273 }
2274
2275 bool is_dc_trusted_domain_situation(const char *domain_name)
2276 {
2277         return IS_DC && !strequal(domain_name, lp_workgroup());
2278 }
2279
2280 /*******************************************************************
2281  Wrapper around retrieving the clear text trust account password.
2282  appropriate account name is stored in account_name.
2283  Caller must free password, but not account_name.
2284 *******************************************************************/
2285
2286 static bool get_trust_pw_clear2(const char *domain,
2287                                 const char **account_name,
2288                                 enum netr_SchannelType *channel,
2289                                 char **cur_pw,
2290                                 time_t *_last_set_time,
2291                                 char **prev_pw)
2292 {
2293         char *pwd;
2294         time_t last_set_time;
2295
2296         if (cur_pw != NULL) {
2297                 *cur_pw = NULL;
2298         }
2299         if (_last_set_time != NULL) {
2300                 *_last_set_time = 0;
2301         }
2302         if (prev_pw != NULL) {
2303                 *prev_pw = NULL;
2304         }
2305
2306         /* if we are a DC and this is not our domain, then lookup an account
2307          * for the domain trust */
2308
2309         if (is_dc_trusted_domain_situation(domain)) {
2310                 if (!lp_allow_trusted_domains()) {
2311                         return false;
2312                 }
2313
2314                 if (!pdb_get_trusteddom_pw(domain, cur_pw, NULL,
2315                                            &last_set_time))
2316                 {
2317                         DEBUG(0, ("get_trust_pw: could not fetch trust "
2318                                 "account password for trusted domain %s\n",
2319                                 domain));
2320                         return false;
2321                 }
2322
2323                 if (channel != NULL) {
2324                         *channel = SEC_CHAN_DOMAIN;
2325                 }
2326
2327                 if (account_name != NULL) {
2328                         *account_name = lp_workgroup();
2329                 }
2330
2331                 if (_last_set_time != NULL) {
2332                         *_last_set_time = last_set_time;
2333                 }
2334
2335                 return true;
2336         }
2337
2338         /*
2339          * Since we can only be member of one single domain, we are now
2340          * in a member situation:
2341          *
2342          *  -  Either we are a DC (selfjoined) and the domain is our
2343          *     own domain.
2344          *  -  Or we are on a member and the domain is our own or some
2345          *     other (potentially trusted) domain.
2346          *
2347          * In both cases, we can only get the machine account password
2348          * for our own domain to connect to our own dc. (For a member,
2349          * request to trusted domains are performed through our dc.)
2350          *
2351          * So we simply use our own domain name to retrieve the
2352          * machine account passowrd and ignore the request domain here.
2353          */
2354
2355         pwd = secrets_fetch_machine_password(lp_workgroup(), &last_set_time, channel);
2356
2357         if (pwd != NULL) {
2358                 struct timeval expire;
2359
2360                 *cur_pw = pwd;
2361
2362                 if (account_name != NULL) {
2363                         *account_name = lp_netbios_name();
2364                 }
2365
2366                 if (_last_set_time != NULL) {
2367                         *_last_set_time = last_set_time;
2368                 }
2369
2370                 if (prev_pw == NULL) {
2371                         return true;
2372                 }
2373
2374                 ZERO_STRUCT(expire);
2375                 expire.tv_sec = lp_machine_password_timeout();
2376                 expire.tv_sec /= 2;
2377                 expire.tv_sec += last_set_time;
2378                 if (timeval_expired(&expire)) {
2379                         return true;
2380                 }
2381
2382                 pwd = secrets_fetch_prev_machine_password(lp_workgroup());
2383                 if (pwd != NULL) {
2384                         *prev_pw = pwd;
2385                 }
2386
2387                 return true;
2388         }
2389
2390         DEBUG(5, ("get_trust_pw_clear2: could not fetch clear text trust "
2391                   "account password for domain %s\n", domain));
2392         return false;
2393 }
2394
2395 bool get_trust_pw_clear(const char *domain, char **ret_pwd,
2396                         const char **account_name,
2397                         enum netr_SchannelType *channel)
2398 {
2399         return get_trust_pw_clear2(domain,
2400                                    account_name,
2401                                    channel,
2402                                    ret_pwd,
2403                                    NULL,
2404                                    NULL);
2405 }
2406
2407 /*******************************************************************
2408  Wrapper around retrieving the trust account password.
2409  appropriate account name is stored in account_name.
2410 *******************************************************************/
2411
2412 static bool get_trust_pw_hash2(const char *domain,
2413                                const char **account_name,
2414                                enum netr_SchannelType *channel,
2415                                struct samr_Password *current_nt_hash,
2416                                time_t *last_set_time,
2417                                struct samr_Password **_previous_nt_hash)
2418 {
2419         char *cur_pw = NULL;
2420         char *prev_pw = NULL;
2421         char **_prev_pw = NULL;
2422         bool ok;
2423
2424         if (_previous_nt_hash != NULL) {
2425                 *_previous_nt_hash = NULL;
2426                 _prev_pw = &prev_pw;
2427         }
2428
2429         ok = get_trust_pw_clear2(domain, account_name, channel,
2430                                  &cur_pw, last_set_time, _prev_pw);
2431         if (ok) {
2432                 struct samr_Password *previous_nt_hash = NULL;
2433
2434                 E_md4hash(cur_pw, current_nt_hash->hash);
2435                 SAFE_FREE(cur_pw);
2436
2437                 if (prev_pw == NULL) {
2438                         return true;
2439                 }
2440
2441                 previous_nt_hash = SMB_MALLOC_P(struct samr_Password);
2442                 if (previous_nt_hash == NULL) {
2443                         return false;
2444                 }
2445
2446                 E_md4hash(prev_pw, previous_nt_hash->hash);
2447                 SAFE_FREE(prev_pw);
2448
2449                 *_previous_nt_hash = previous_nt_hash;
2450                 return true;
2451         } else if (is_dc_trusted_domain_situation(domain)) {
2452                 return false;
2453         }
2454
2455         /* as a fallback, try to get the hashed pwd directly from the tdb... */
2456
2457         if (secrets_fetch_trust_account_password_legacy(domain,
2458                                                         current_nt_hash->hash,
2459                                                         last_set_time,
2460                                                         channel))
2461         {
2462                 if (account_name != NULL) {
2463                         *account_name = lp_netbios_name();
2464                 }
2465
2466                 return true;
2467         }
2468
2469         DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
2470                 "password for domain %s\n", domain));
2471         return False;
2472 }
2473
2474 bool get_trust_pw_hash(const char *domain, uint8_t ret_pwd[16],
2475                        const char **account_name,
2476                        enum netr_SchannelType *channel)
2477 {
2478         struct samr_Password current_nt_hash;
2479         bool ok;
2480
2481         ok = get_trust_pw_hash2(domain, account_name, channel,
2482                                 &current_nt_hash, NULL, NULL);
2483         if (!ok) {
2484                 return false;
2485         }
2486
2487         memcpy(ret_pwd, current_nt_hash.hash, sizeof(current_nt_hash.hash));
2488         return true;
2489 }
2490
2491 NTSTATUS pdb_get_trust_credentials(const char *netbios_domain,
2492                                    const char *dns_domain, /* optional */
2493                                    TALLOC_CTX *mem_ctx,
2494                                    struct cli_credentials **_creds)
2495 {
2496         TALLOC_CTX *frame = talloc_stackframe();
2497         NTSTATUS status = NT_STATUS_INTERNAL_ERROR;
2498         struct loadparm_context *lp_ctx;
2499         enum netr_SchannelType channel;
2500         time_t last_set_time;
2501         const char *_account_name;
2502         const char *account_name;
2503         char *cur_pw = NULL;
2504         char *prev_pw = NULL;
2505         struct samr_Password cur_nt_hash;
2506         struct cli_credentials *creds = NULL;
2507         bool ok;
2508
2509         /*
2510          * If this is our primary trust relationship, use the common
2511          * code to read the secrets.ldb or secrets.tdb file.
2512          */
2513         if (strequal(netbios_domain, lp_workgroup())) {
2514                 struct db_context *db_ctx = secrets_db_ctx();
2515                 if (db_ctx == NULL) {
2516                         DEBUG(1, ("failed to open secrets.tdb to obtain our trust credentials for %s\n",
2517                                   netbios_domain));
2518                         status = NT_STATUS_INTERNAL_ERROR;
2519                         goto fail;
2520                 }
2521
2522                 lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
2523                 if (lp_ctx == NULL) {
2524                         DEBUG(1, ("loadparm_init_s3 failed\n"));
2525                         status = NT_STATUS_INTERNAL_ERROR;
2526                         goto fail;
2527                 }
2528
2529                 creds = cli_credentials_init(mem_ctx);
2530                 if (creds == NULL) {
2531                         status = NT_STATUS_NO_MEMORY;
2532                         goto fail;
2533                 }
2534
2535                 cli_credentials_set_conf(creds, lp_ctx);
2536
2537                 ok = cli_credentials_set_domain(creds, netbios_domain, CRED_SPECIFIED);
2538                 if (!ok) {
2539                         status = NT_STATUS_NO_MEMORY;
2540                         goto fail;
2541                 }
2542
2543                 status = cli_credentials_set_machine_account_db_ctx(creds,
2544                                                                     lp_ctx,
2545                                                                     db_ctx);
2546                 if (!NT_STATUS_IS_OK(status)) {
2547                         goto fail;
2548                 }
2549                 goto done;
2550         } else if (!IS_DC) {
2551                 DEBUG(1, ("Refusing to get trust account info for %s, "
2552                           "which is not our primary domain %s, "
2553                           "as we are not a DC\n",
2554                           netbios_domain, lp_workgroup()));
2555                 status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2556                 goto fail;
2557         }
2558
2559         status = pdb_get_trusteddom_creds(netbios_domain, mem_ctx, &creds);
2560         if (NT_STATUS_IS_OK(status)) {
2561                 goto done;
2562         }
2563         if (!NT_STATUS_EQUAL(status, NT_STATUS_NOT_IMPLEMENTED)) {
2564                 goto fail;
2565         }
2566
2567         ok = get_trust_pw_clear2(netbios_domain,
2568                                  &_account_name,
2569                                  &channel,
2570                                  &cur_pw,
2571                                  &last_set_time,
2572                                  &prev_pw);
2573         if (!ok) {
2574                 ok = get_trust_pw_hash2(netbios_domain,
2575                                         &_account_name,
2576                                         &channel,
2577                                         &cur_nt_hash,
2578                                         &last_set_time,
2579                                         NULL);
2580                 if (!ok) {
2581                         DEBUG(1, ("get_trust_pw_*2 failed for domain[%s]\n",
2582                                   netbios_domain));
2583                         status = NT_STATUS_CANT_ACCESS_DOMAIN_INFO;
2584                         goto fail;
2585                 }
2586         }
2587
2588         account_name = talloc_asprintf(frame, "%s$", _account_name);
2589         if (account_name == NULL) {
2590                 status = NT_STATUS_NO_MEMORY;
2591                 goto fail;
2592         }
2593
2594         lp_ctx = loadparm_init_s3(frame, loadparm_s3_helpers());
2595         if (lp_ctx == NULL) {
2596                 DEBUG(1, ("loadparm_init_s3 failed\n"));
2597                 status = NT_STATUS_INTERNAL_ERROR;
2598                 goto fail;
2599         }
2600
2601         creds = cli_credentials_init(mem_ctx);
2602         if (creds == NULL) {
2603                 status = NT_STATUS_NO_MEMORY;
2604                 goto fail;
2605         }
2606
2607         cli_credentials_set_conf(creds, lp_ctx);
2608
2609         cli_credentials_set_secure_channel_type(creds, channel);
2610         cli_credentials_set_password_last_changed_time(creds, last_set_time);
2611
2612         ok = cli_credentials_set_domain(creds, netbios_domain, CRED_SPECIFIED);
2613         if (!ok) {
2614                 status = NT_STATUS_NO_MEMORY;
2615                 goto fail;
2616         }
2617
2618         if (dns_domain != NULL) {
2619                 ok = cli_credentials_set_realm(creds, dns_domain, CRED_SPECIFIED);
2620                 if (!ok) {
2621                         status = NT_STATUS_NO_MEMORY;
2622                         goto fail;
2623                 }
2624
2625                 /*
2626                  * It's not possible to use NTLMSSP with a domain trust account.
2627                  */
2628                 cli_credentials_set_kerberos_state(creds, CRED_MUST_USE_KERBEROS);
2629         } else {
2630                 /*
2631                  * We can't use kerberos against an NT4 domain.
2632                  *
2633                  * We should have a mode that also disallows NTLMSSP here,
2634                  * as only NETLOGON SCHANNEL is possible.
2635                  */
2636                 cli_credentials_set_kerberos_state(creds, CRED_DONT_USE_KERBEROS);
2637         }
2638
2639         ok = cli_credentials_set_username(creds, account_name, CRED_SPECIFIED);
2640         if (!ok) {
2641                 status = NT_STATUS_NO_MEMORY;
2642                 goto fail;
2643         }
2644
2645         if (cur_pw == NULL) {
2646                 ok = cli_credentials_set_nt_hash(creds, &cur_nt_hash, CRED_SPECIFIED);
2647                 if (!ok) {
2648                         status = NT_STATUS_NO_MEMORY;
2649                         goto fail;
2650                 }
2651                 /*
2652                  * We currently can't do kerberos just with an NTHASH.
2653                  */
2654                 cli_credentials_set_kerberos_state(creds, CRED_DONT_USE_KERBEROS);
2655                 goto done;
2656         }
2657
2658         ok = cli_credentials_set_password(creds, cur_pw, CRED_SPECIFIED);
2659         if (!ok) {
2660                 status = NT_STATUS_NO_MEMORY;
2661                 goto fail;
2662         }
2663
2664         if (prev_pw != NULL) {
2665                 ok = cli_credentials_set_old_password(creds, prev_pw, CRED_SPECIFIED);
2666                 if (!ok) {
2667                         status = NT_STATUS_NO_MEMORY;
2668                         goto fail;
2669                 }
2670         }
2671
2672  done:
2673         *_creds = creds;
2674         creds = NULL;
2675         status = NT_STATUS_OK;
2676  fail:
2677         TALLOC_FREE(creds);
2678         SAFE_FREE(cur_pw);
2679         SAFE_FREE(prev_pw);
2680         TALLOC_FREE(frame);
2681         return status;
2682 }