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