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
  27 #undef DBGC_CLASS
  28 #define DBGC_CLASS DBGC_PASSDB
  29
  30 /******************************************************************
  31  get the default domain/netbios name to be used when
  32  testing authentication.  For example, if you connect
  33  to a Windows member server using a bogus domain name, the
  34  Windows box will map the BOGUS\user to DOMAIN\user.  A
  35  standalone box will map to WKS\user.
  36 ******************************************************************/
  37
  38 const char *my_sam_name(void)
  39 {
  40         /* standalone servers can only use the local netbios name */
  41         if ( lp_server_role() == ROLE_STANDALONE )
  42                 return global_myname();
  43
  44         /* Windows domain members default to the DOMAIN
  45            name when not specified */
  46         return lp_workgroup();
  47 }
  48
  49 /**********************************************************************
  50 ***********************************************************************/
  51
  52 static int samu_destroy(struct samu *user)
  53 {
  54         data_blob_clear_free( &user->lm_pw );
  55         data_blob_clear_free( &user->nt_pw );
  56
  57         if ( user->plaintext_pw )
  58                 memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) );
  59
  60         return 0;
  61 }
  62
  63 /**********************************************************************
  64  generate a new struct samuser
  65 ***********************************************************************/
  66
  67 struct samu *samu_new( TALLOC_CTX *ctx )
  68 {
  69         struct samu *user;
  70
  71         if ( !(user = TALLOC_ZERO_P( ctx, struct samu )) ) {
  72                 DEBUG(0,("samuser_new: Talloc failed!\n"));
  73                 return NULL;
  74         }
  75
  76         talloc_set_destructor( user, samu_destroy );
  77
  78         /* no initial methods */
  79
  80         user->methods = NULL;
  81
  82         /* Don't change these timestamp settings without a good reason.
  83            They are important for NT member server compatibility. */
  84
  85         user->logon_time            = (time_t)0;
  86         user->pass_last_set_time    = (time_t)0;
  87         user->pass_can_change_time  = (time_t)0;
  88         user->logoff_time           = get_time_t_max();
  89         user->kickoff_time          = get_time_t_max();
  90         user->pass_must_change_time = get_time_t_max();
  91         user->fields_present        = 0x00ffffff;
  92         user->logon_divs = 168;         /* hours per week */
  93         user->hours_len = 21;           /* 21 times 8 bits = 168 */
  94         memset(user->hours, 0xff, user->hours_len); /* available at all hours */
  95         user->bad_password_count = 0;
  96         user->logon_count = 0;
  97         user->unknown_6 = 0x000004ec; /* don't know */
  98
  99         /* Some parts of samba strlen their pdb_get...() returns,
 100            so this keeps the interface unchanged for now. */
 101
 102         user->username = "";
 103         user->domain = "";
 104         user->nt_username = "";
 105         user->full_name = "";
 106         user->home_dir = "";
 107         user->logon_script = "";
 108         user->profile_path = "";
 109         user->acct_desc = "";
 110         user->workstations = "";
 111         user->comment = "";
 112         user->munged_dial = "";
 113
 114         user->plaintext_pw = NULL;
 115
 116         /* Unless we know otherwise have a Account Control Bit
 117            value of 'normal user'.  This helps User Manager, which
 118            asks for a filtered list of users. */
 119
 120         user->acct_ctrl = ACB_NORMAL;
 121
 122
 123         return user;
 124 }
 125
 126 /*********************************************************************
 127  Initialize a struct samu from a struct passwd including the user
 128  and group SIDs.  The *user structure is filled out with the Unix
 129  attributes and a user SID.
 130 *********************************************************************/
 131
 132 static NTSTATUS samu_set_unix_internal(struct samu *user, const struct passwd *pwd, bool create)
 133 {
 134         const char *guest_account = lp_guestaccount();
 135         const char *domain = global_myname();
 136         uint32 urid;
 137
 138         if ( !pwd ) {
 139                 return NT_STATUS_NO_SUCH_USER;
 140         }
 141
 142         /* Basic properties based upon the Unix account information */
 143
 144         pdb_set_username(user, pwd->pw_name, PDB_SET);
 145         pdb_set_fullname(user, pwd->pw_gecos, PDB_SET);
 146         pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT);
 147 #if 0
 148         /* This can lead to a primary group of S-1-22-2-XX which
 149            will be rejected by other parts of the Samba code.
 150            Rely on pdb_get_group_sid() to "Do The Right Thing" (TM)
 151            --jerry */
 152
 153         gid_to_sid(&group_sid, pwd->pw_gid);
 154         pdb_set_group_sid(user, &group_sid, PDB_SET);
 155 #endif
 156
 157         /* save the password structure for later use */
 158
 159         user->unix_pw = tcopy_passwd( user, pwd );
 160
 161         /* Special case for the guest account which must have a RID of 501 */
 162
 163         if ( strequal( pwd->pw_name, guest_account ) ) {
 164                 if ( !pdb_set_user_sid_from_rid(user, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
 165                         return NT_STATUS_NO_SUCH_USER;
 166                 }
 167                 return NT_STATUS_OK;
 168         }
 169
 170         /* Non-guest accounts...Check for a workstation or user account */
 171
 172         if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') {
 173                 /* workstation */
 174
 175                 if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) {
 176                         DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n",
 177                                 pwd->pw_name));
 178                         return NT_STATUS_INVALID_COMPUTER_NAME;
 179                 }
 180         }
 181         else {
 182                 /* user */
 183
 184                 if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) {
 185                         DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n",
 186                                 pwd->pw_name));
 187                         return NT_STATUS_INVALID_ACCOUNT_NAME;
 188                 }
 189
 190                 /* set some basic attributes */
 191
 192                 pdb_set_profile_path(user, talloc_sub_specified(user,
 193                         lp_logon_path(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 194                         PDB_DEFAULT);
 195                 pdb_set_homedir(user, talloc_sub_specified(user,
 196                         lp_logon_home(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 197                         PDB_DEFAULT);
 198                 pdb_set_dir_drive(user, talloc_sub_specified(user,
 199                         lp_logon_drive(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 200                         PDB_DEFAULT);
 201                 pdb_set_logon_script(user, talloc_sub_specified(user,
 202                         lp_logon_script(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 203                         PDB_DEFAULT);
 204         }
 205
 206         /* Now deal with the user SID.  If we have a backend that can generate
 207            RIDs, then do so.  But sometimes the caller just wanted a structure
 208            initialized and will fill in these fields later (such as from a
 209            NET_USER_INFO_3 structure) */
 210
 211         if ( create && !pdb_rid_algorithm() ) {
 212                 uint32 user_rid;
 213                 DOM_SID user_sid;
 214
 215                 if ( !pdb_new_rid( &user_rid ) ) {
 216                         DEBUG(3, ("Could not allocate a new RID\n"));
 217                         return NT_STATUS_ACCESS_DENIED;
 218                 }
 219
 220                 sid_copy( &user_sid, get_global_sam_sid() );
 221                 sid_append_rid( &user_sid, user_rid );
 222
 223                 if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) {
 224                         DEBUG(3, ("pdb_set_user_sid failed\n"));
 225                         return NT_STATUS_INTERNAL_ERROR;
 226                 }
 227
 228                 return NT_STATUS_OK;
 229         }
 230
 231         /* generate a SID for the user with the RID algorithm */
 232
 233         urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid );
 234
 235         if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) {
 236                 return NT_STATUS_INTERNAL_ERROR;
 237         }
 238
 239         return NT_STATUS_OK;
 240 }
 241
 242 /********************************************************************
 243  Set the Unix user attributes
 244 ********************************************************************/
 245
 246 NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd)
 247 {
 248         return samu_set_unix_internal( user, pwd, False );
 249 }
 250
 251 NTSTATUS samu_alloc_rid_unix(struct samu *user, const struct passwd *pwd)
 252 {
 253         return samu_set_unix_internal( user, pwd, True );
 254 }
 255
 256 /**********************************************************
 257  Encode the account control bits into a string.
 258  length = length of string to encode into (including terminating
 259  null). length *MUST BE MORE THAN 2* !
 260  **********************************************************/
 261
 262 char *pdb_encode_acct_ctrl(uint32 acct_ctrl, size_t length)
 263 {
 264         fstring acct_str;
 265         char *result;
 266
 267         size_t i = 0;
 268
 269         SMB_ASSERT(length <= sizeof(acct_str));
 270
 271         acct_str[i++] = '[';
 272
 273         if (acct_ctrl & ACB_PWNOTREQ ) acct_str[i++] = 'N';
 274         if (acct_ctrl & ACB_DISABLED ) acct_str[i++] = 'D';
 275         if (acct_ctrl & ACB_HOMDIRREQ) acct_str[i++] = 'H';
 276         if (acct_ctrl & ACB_TEMPDUP  ) acct_str[i++] = 'T';
 277         if (acct_ctrl & ACB_NORMAL   ) acct_str[i++] = 'U';
 278         if (acct_ctrl & ACB_MNS      ) acct_str[i++] = 'M';
 279         if (acct_ctrl & ACB_WSTRUST  ) acct_str[i++] = 'W';
 280         if (acct_ctrl & ACB_SVRTRUST ) acct_str[i++] = 'S';
 281         if (acct_ctrl & ACB_AUTOLOCK ) acct_str[i++] = 'L';
 282         if (acct_ctrl & ACB_PWNOEXP  ) acct_str[i++] = 'X';
 283         if (acct_ctrl & ACB_DOMTRUST ) acct_str[i++] = 'I';
 284
 285         for ( ; i < length - 2 ; i++ )
 286                 acct_str[i] = ' ';
 287
 288         i = length - 2;
 289         acct_str[i++] = ']';
 290         acct_str[i++] = '\0';
 291
 292         result = talloc_strdup(talloc_tos(), acct_str);
 293         SMB_ASSERT(result != NULL);
 294         return result;
 295 }
 296
 297 /**********************************************************
 298  Decode the account control bits from a string.
 299  **********************************************************/
 300
 301 uint32 pdb_decode_acct_ctrl(const char *p)
 302 {
 303         uint32 acct_ctrl = 0;
 304         bool finished = False;
 305
 306         /*
 307          * Check if the account type bits have been encoded after the
 308          * NT password (in the form [NDHTUWSLXI]).
 309          */
 310
 311         if (*p != '[')
 312                 return 0;
 313
 314         for (p++; *p && !finished; p++) {
 315                 switch (*p) {
 316                         case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
 317                         case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
 318                         case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
 319                         case 'T': { acct_ctrl |= ACB_TEMPDUP  ; break; /* 'T'emp account. */ }
 320                         case 'U': { acct_ctrl |= ACB_NORMAL   ; break; /* 'U'ser account (normal). */ }
 321                         case 'M': { acct_ctrl |= ACB_MNS      ; break; /* 'M'NS logon user account. What is this ? */ }
 322                         case 'W': { acct_ctrl |= ACB_WSTRUST  ; break; /* 'W'orkstation account. */ }
 323                         case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
 324                         case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
 325                         case 'X': { acct_ctrl |= ACB_PWNOEXP  ; break; /* No 'X'piry on password */ }
 326                         case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
 327             case ' ': { break; }
 328                         case ':':
 329                         case '\n':
 330                         case '\0':
 331                         case ']':
 332                         default:  { finished = True; }
 333                 }
 334         }
 335
 336         return acct_ctrl;
 337 }
 338
 339 /*************************************************************
 340  Routine to set 32 hex password characters from a 16 byte array.
 341 **************************************************************/
 342
 343 void pdb_sethexpwd(char p[33], const unsigned char *pwd, uint32 acct_ctrl)
 344 {
 345         if (pwd != NULL) {
 346                 int i;
 347                 for (i = 0; i < 16; i++)
 348                         slprintf(&p[i*2], 3, "%02X", pwd[i]);
 349         } else {
 350                 if (acct_ctrl & ACB_PWNOTREQ)
 351                         safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 32);
 352                 else
 353                         safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 32);
 354         }
 355 }
 356
 357 /*************************************************************
 358  Routine to get the 32 hex characters and turn them
 359  into a 16 byte array.
 360 **************************************************************/
 361
 362 bool pdb_gethexpwd(const char *p, unsigned char *pwd)
 363 {
 364         int i;
 365         unsigned char   lonybble, hinybble;
 366         const char      *hexchars = "0123456789ABCDEF";
 367         char           *p1, *p2;
 368
 369         if (!p)
 370                 return (False);
 371
 372         for (i = 0; i < 32; i += 2) {
 373                 hinybble = toupper_ascii(p[i]);
 374                 lonybble = toupper_ascii(p[i + 1]);
 375
 376                 p1 = strchr(hexchars, hinybble);
 377                 p2 = strchr(hexchars, lonybble);
 378
 379                 if (!p1 || !p2)
 380                         return (False);
 381
 382                 hinybble = PTR_DIFF(p1, hexchars);
 383                 lonybble = PTR_DIFF(p2, hexchars);
 384
 385                 pwd[i / 2] = (hinybble << 4) | lonybble;
 386         }
 387         return (True);
 388 }
 389
 390 /*************************************************************
 391  Routine to set 42 hex hours characters from a 21 byte array.
 392 **************************************************************/
 393
 394 void pdb_sethexhours(char *p, const unsigned char *hours)
 395 {
 396         if (hours != NULL) {
 397                 int i;
 398                 for (i = 0; i < 21; i++) {
 399                         slprintf(&p[i*2], 3, "%02X", hours[i]);
 400                 }
 401         } else {
 402                 safe_strcpy(p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 43);
 403         }
 404 }
 405
 406 /*************************************************************
 407  Routine to get the 42 hex characters and turn them
 408  into a 21 byte array.
 409 **************************************************************/
 410
 411 bool pdb_gethexhours(const char *p, unsigned char *hours)
 412 {
 413         int i;
 414         unsigned char   lonybble, hinybble;
 415         const char      *hexchars = "0123456789ABCDEF";
 416         char           *p1, *p2;
 417
 418         if (!p) {
 419                 return (False);
 420         }
 421
 422         for (i = 0; i < 42; i += 2) {
 423                 hinybble = toupper_ascii(p[i]);
 424                 lonybble = toupper_ascii(p[i + 1]);
 425
 426                 p1 = strchr(hexchars, hinybble);
 427                 p2 = strchr(hexchars, lonybble);
 428
 429                 if (!p1 || !p2) {
 430                         return (False);
 431                 }
 432
 433                 hinybble = PTR_DIFF(p1, hexchars);
 434                 lonybble = PTR_DIFF(p2, hexchars);
 435
 436                 hours[i / 2] = (hinybble << 4) | lonybble;
 437         }
 438         return (True);
 439 }
 440
 441 /********************************************************************
 442 ********************************************************************/
 443
 444 int algorithmic_rid_base(void)
 445 {
 446         static int rid_offset = 0;
 447
 448         if (rid_offset != 0)
 449                 return rid_offset;
 450
 451         rid_offset = lp_algorithmic_rid_base();
 452
 453         if (rid_offset < BASE_RID) {
 454                 /* Try to prevent admin foot-shooting, we can't put algorithmic
 455                    rids below 1000, that's the 'well known RIDs' on NT */
 456                 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
 457                 rid_offset = BASE_RID;
 458         }
 459         if (rid_offset & 1) {
 460                 DEBUG(0, ("algorithmic rid base must be even\n"));
 461                 rid_offset += 1;
 462         }
 463         return rid_offset;
 464 }
 465
 466 /*******************************************************************
 467  Converts NT user RID to a UNIX uid.
 468  ********************************************************************/
 469
 470 uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid)
 471 {
 472         int rid_offset = algorithmic_rid_base();
 473         return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 474 }
 475
 476 uid_t max_algorithmic_uid(void)
 477 {
 478         return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
 479 }
 480
 481 /*******************************************************************
 482  converts UNIX uid to an NT User RID.
 483  ********************************************************************/
 484
 485 uint32 algorithmic_pdb_uid_to_user_rid(uid_t uid)
 486 {
 487         int rid_offset = algorithmic_rid_base();
 488         return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
 489 }
 490
 491 /*******************************************************************
 492  Converts NT group RID to a UNIX gid.
 493  ********************************************************************/
 494
 495 gid_t pdb_group_rid_to_gid(uint32 group_rid)
 496 {
 497         int rid_offset = algorithmic_rid_base();
 498         return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 499 }
 500
 501 gid_t max_algorithmic_gid(void)
 502 {
 503         return pdb_group_rid_to_gid(0xffffffff);
 504 }
 505
 506 /*******************************************************************
 507  converts NT Group RID to a UNIX uid.
 508
 509  warning: you must not call that function only
 510  you must do a call to the group mapping first.
 511  there is not anymore a direct link between the gid and the rid.
 512  ********************************************************************/
 513
 514 uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid)
 515 {
 516         int rid_offset = algorithmic_rid_base();
 517         return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
 518 }
 519
 520 /*******************************************************************
 521  Decides if a RID is a well known RID.
 522  ********************************************************************/
 523
 524 static bool rid_is_well_known(uint32 rid)
 525 {
 526         /* Not using rid_offset here, because this is the actual
 527            NT fixed value (1000) */
 528
 529         return (rid < BASE_RID);
 530 }
 531
 532 /*******************************************************************
 533  Decides if a RID is a user or group RID.
 534  ********************************************************************/
 535
 536 bool algorithmic_pdb_rid_is_user(uint32 rid)
 537 {
 538         if ( rid_is_well_known(rid) ) {
 539                 /*
 540                  * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
 541                  * and DOMAIN_USER_RID_GUEST.
 542                  */
 543                 if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
 544                         return True;
 545         } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
 546                 return True;
 547         }
 548         return False;
 549 }
 550
 551 /*******************************************************************
 552  Convert a name into a SID. Used in the lookup name rpc.
 553  ********************************************************************/
 554
 555 bool lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
 556                             enum lsa_SidType *type)
 557 {
 558         GROUP_MAP map;
 559         bool ret;
 560
 561         /* Windows treats "MACHINE\None" as a special name for
 562            rid 513 on non-DCs.  You cannot create a user or group
 563            name "None" on Windows.  You will get an error that
 564            the group already exists. */
 565
 566         if ( strequal( name, "None" ) ) {
 567                 *rid = DOMAIN_GROUP_RID_USERS;
 568                 *type = SID_NAME_DOM_GRP;
 569
 570                 return True;
 571         }
 572
 573         /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
 574          * correctly in the case where foo also exists as a user. If the flag
 575          * is set, don't look for users at all. */
 576
 577         if ((flags & LOOKUP_NAME_GROUP) == 0) {
 578                 struct samu *sam_account = NULL;
 579                 DOM_SID user_sid;
 580
 581                 if ( !(sam_account = samu_new( NULL )) ) {
 582                         return False;
 583                 }
 584
 585                 become_root();
 586                 ret =  pdb_getsampwnam(sam_account, name);
 587                 unbecome_root();
 588
 589                 if (ret) {
 590                         sid_copy(&user_sid, pdb_get_user_sid(sam_account));
 591                 }
 592
 593                 TALLOC_FREE(sam_account);
 594
 595                 if (ret) {
 596                         if (!sid_check_is_in_our_domain(&user_sid)) {
 597                                 DEBUG(0, ("User %s with invalid SID %s in passdb\n",
 598                                           name, sid_string_dbg(&user_sid)));
 599                                 return False;
 600                         }
 601
 602                         sid_peek_rid(&user_sid, rid);
 603                         *type = SID_NAME_USER;
 604                         return True;
 605                 }
 606         }
 607
 608         /*
 609          * Maybe it is a group ?
 610          */
 611
 612         become_root();
 613         ret = pdb_getgrnam(&map, name);
 614         unbecome_root();
 615
 616         if (!ret) {
 617                 return False;
 618         }
 619
 620         /* BUILTIN groups are looked up elsewhere */
 621         if (!sid_check_is_in_our_domain(&map.sid)) {
 622                 DEBUG(10, ("Found group %s (%s) not in our domain -- "
 623                            "ignoring.", name, sid_string_dbg(&map.sid)));
 624                 return False;
 625         }
 626
 627         /* yes it's a mapped group */
 628         sid_peek_rid(&map.sid, rid);
 629         *type = map.sid_name_use;
 630         return True;
 631 }
 632
 633 /*************************************************************
 634  Change a password entry in the local smbpasswd file.
 635  *************************************************************/
 636
 637 NTSTATUS local_password_change(const char *user_name,
 638                                 int local_flags,
 639                                 const char *new_passwd,
 640                                 char **pp_err_str,
 641                                 char **pp_msg_str)
 642 {
 643         struct samu *sam_pass=NULL;
 644         uint32 other_acb;
 645         NTSTATUS result;
 646
 647         *pp_err_str = NULL;
 648         *pp_msg_str = NULL;
 649
 650         /* Get the smb passwd entry for this user */
 651
 652         if ( !(sam_pass = samu_new( NULL )) ) {
 653                 return NT_STATUS_NO_MEMORY;
 654         }
 655
 656         become_root();
 657         if(!pdb_getsampwnam(sam_pass, user_name)) {
 658                 unbecome_root();
 659                 TALLOC_FREE(sam_pass);
 660
 661                 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
 662                         int tmp_debug = DEBUGLEVEL;
 663                         struct passwd *pwd;
 664
 665                         /* Might not exist in /etc/passwd. */
 666
 667                         if (tmp_debug < 1) {
 668                                 DEBUGLEVEL = 1;
 669                         }
 670
 671                         if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
 672                                 return NT_STATUS_NO_SUCH_USER;
 673                         }
 674
 675                         /* create the struct samu and initialize the basic Unix properties */
 676
 677                         if ( !(sam_pass = samu_new( NULL )) ) {
 678                                 return NT_STATUS_NO_MEMORY;
 679                         }
 680
 681                         result = samu_set_unix( sam_pass, pwd );
 682
 683                         DEBUGLEVEL = tmp_debug;
 684
 685                         TALLOC_FREE( pwd );
 686
 687                         if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
 688                                 return result;
 689                         }
 690
 691                         if (!NT_STATUS_IS_OK(result)) {
 692                                 asprintf(pp_err_str, "Failed to " "initialize account for user %s: %s\n",
 693                                         user_name, nt_errstr(result));
 694                                 return result;
 695                         }
 696                 } else {
 697                         asprintf(pp_err_str, "Failed to find entry for user %s.\n", user_name);
 698                         return NT_STATUS_NO_SUCH_USER;
 699                 }
 700         } else {
 701                 unbecome_root();
 702                 /* the entry already existed */
 703                 local_flags &= ~LOCAL_ADD_USER;
 704         }
 705
 706         /* the 'other' acb bits not being changed here */
 707         other_acb =  (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
 708         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 709                 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
 710                         asprintf(pp_err_str, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
 711                         TALLOC_FREE(sam_pass);
 712                         return NT_STATUS_UNSUCCESSFUL;
 713                 }
 714         } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 715                 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
 716                         asprintf(pp_err_str, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
 717                         TALLOC_FREE(sam_pass);
 718                         return NT_STATUS_UNSUCCESSFUL;
 719                 }
 720         } else {
 721                 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
 722                         asprintf(pp_err_str, "Failed to set 'normal account' flags for user %s.\n", user_name);
 723                         TALLOC_FREE(sam_pass);
 724                         return NT_STATUS_UNSUCCESSFUL;
 725                 }
 726         }
 727
 728         /*
 729          * We are root - just write the new password
 730          * and the valid last change time.
 731          */
 732
 733         if (local_flags & LOCAL_DISABLE_USER) {
 734                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
 735                         asprintf(pp_err_str, "Failed to set 'disabled' flag for user %s.\n", user_name);
 736                         TALLOC_FREE(sam_pass);
 737                         return NT_STATUS_UNSUCCESSFUL;
 738                 }
 739         } else if (local_flags & LOCAL_ENABLE_USER) {
 740                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 741                         asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 742                         TALLOC_FREE(sam_pass);
 743                         return NT_STATUS_UNSUCCESSFUL;
 744                 }
 745         }
 746
 747         if (local_flags & LOCAL_SET_NO_PASSWORD) {
 748                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
 749                         asprintf(pp_err_str, "Failed to set 'no password required' flag for user %s.\n", user_name);
 750                         TALLOC_FREE(sam_pass);
 751                         return NT_STATUS_UNSUCCESSFUL;
 752                 }
 753         } else if (local_flags & LOCAL_SET_PASSWORD) {
 754                 /*
 755                  * If we're dealing with setting a completely empty user account
 756                  * ie. One with a password of 'XXXX', but not set disabled (like
 757                  * an account created from scratch) then if the old password was
 758                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
 759                  * We remove that as we're giving this user their first password
 760                  * and the decision hasn't really been made to disable them (ie.
 761                  * don't create them disabled). JRA.
 762                  */
 763                 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
 764                         if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 765                                 asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 766                                 TALLOC_FREE(sam_pass);
 767                                 return NT_STATUS_UNSUCCESSFUL;
 768                         }
 769                 }
 770                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
 771                         asprintf(pp_err_str, "Failed to unset 'no password required' flag for user %s.\n", user_name);
 772                         TALLOC_FREE(sam_pass);
 773                         return NT_STATUS_UNSUCCESSFUL;
 774                 }
 775
 776                 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
 777                         asprintf(pp_err_str, "Failed to set password for user %s.\n", user_name);
 778                         TALLOC_FREE(sam_pass);
 779                         return NT_STATUS_UNSUCCESSFUL;
 780                 }
 781         }
 782
 783         if (local_flags & LOCAL_ADD_USER) {
 784                 if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
 785                         asprintf(pp_msg_str, "Added user %s.\n", user_name);
 786                         TALLOC_FREE(sam_pass);
 787                         return NT_STATUS_OK;
 788                 } else {
 789                         asprintf(pp_err_str, "Failed to add entry for user %s.\n", user_name);
 790                         TALLOC_FREE(sam_pass);
 791                         return NT_STATUS_UNSUCCESSFUL;
 792                 }
 793         } else if (local_flags & LOCAL_DELETE_USER) {
 794                 if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
 795                         asprintf(pp_err_str, "Failed to delete entry for user %s.\n", user_name);
 796                         TALLOC_FREE(sam_pass);
 797                         return NT_STATUS_UNSUCCESSFUL;
 798                 }
 799                 asprintf(pp_msg_str, "Deleted user %s.\n", user_name);
 800         } else {
 801                 result = pdb_update_sam_account(sam_pass);
 802                 if(!NT_STATUS_IS_OK(result)) {
 803                         asprintf(pp_err_str, "Failed to modify entry for user %s.\n", user_name);
 804                         TALLOC_FREE(sam_pass);
 805                         return result;
 806                 }
 807                 if(local_flags & LOCAL_DISABLE_USER)
 808                         asprintf(pp_msg_str, "Disabled user %s.\n", user_name);
 809                 else if (local_flags & LOCAL_ENABLE_USER)
 810                         asprintf(pp_msg_str, "Enabled user %s.\n", user_name);
 811                 else if (local_flags & LOCAL_SET_NO_PASSWORD)
 812                         asprintf(pp_msg_str, "User %s password set to none.\n", user_name);
 813         }
 814
 815         TALLOC_FREE(sam_pass);
 816         return NT_STATUS_OK;
 817 }
 818
 819 /**********************************************************************
 820  Marshall/unmarshall struct samu structs.
 821  *********************************************************************/
 822
 823 #define TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
 824
 825 /*********************************************************************
 826 *********************************************************************/
 827
 828 bool init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
 829 {
 830
 831         /* times are stored as 32bit integer
 832            take care on system with 64bit wide time_t
 833            --SSS */
 834         uint32  logon_time,
 835                 logoff_time,
 836                 kickoff_time,
 837                 bad_password_time,
 838                 pass_last_set_time,
 839                 pass_can_change_time,
 840                 pass_must_change_time;
 841         char *username = NULL;
 842         char *domain = NULL;
 843         char *nt_username = NULL;
 844         char *dir_drive = NULL;
 845         char *unknown_str = NULL;
 846         char *munged_dial = NULL;
 847         char *fullname = NULL;
 848         char *homedir = NULL;
 849         char *logon_script = NULL;
 850         char *profile_path = NULL;
 851         char *acct_desc = NULL;
 852         char *workstations = NULL;
 853         uint32  username_len, domain_len, nt_username_len,
 854                 dir_drive_len, unknown_str_len, munged_dial_len,
 855                 fullname_len, homedir_len, logon_script_len,
 856                 profile_path_len, acct_desc_len, workstations_len;
 857
 858         uint32  user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
 859         uint16  logon_divs;
 860         uint16  bad_password_count, logon_count;
 861         uint8   *hours = NULL;
 862         uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
 863         uint32          len = 0;
 864         uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 865         uint32 pwHistLen = 0;
 866         bool ret = True;
 867         fstring tmp_string;
 868         bool expand_explicit = lp_passdb_expand_explicit();
 869
 870         if(sampass == NULL || buf == NULL) {
 871                 DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n"));
 872                 return False;
 873         }
 874
 875 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 876
 877         /* unpack the buffer into variables */
 878         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3,
 879                 &logon_time,                                            /* d */
 880                 &logoff_time,                                           /* d */
 881                 &kickoff_time,                                          /* d */
 882                 &bad_password_time,                                     /* d */
 883                 &pass_last_set_time,                                    /* d */
 884                 &pass_can_change_time,                                  /* d */
 885                 &pass_must_change_time,                                 /* d */
 886                 &username_len, &username,                               /* B */
 887                 &domain_len, &domain,                                   /* B */
 888                 &nt_username_len, &nt_username,                         /* B */
 889                 &fullname_len, &fullname,                               /* B */
 890                 &homedir_len, &homedir,                                 /* B */
 891                 &dir_drive_len, &dir_drive,                             /* B */
 892                 &logon_script_len, &logon_script,                       /* B */
 893                 &profile_path_len, &profile_path,                       /* B */
 894                 &acct_desc_len, &acct_desc,                             /* B */
 895                 &workstations_len, &workstations,                       /* B */
 896                 &unknown_str_len, &unknown_str,                         /* B */
 897                 &munged_dial_len, &munged_dial,                         /* B */
 898                 &user_rid,                                              /* d */
 899                 &group_rid,                                             /* d */
 900                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
 901                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
 902                 /* Change from V1 is addition of password history field. */
 903                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
 904                 /* Change from V2 is the uint32 acb_mask */
 905                 &acct_ctrl,                                             /* d */
 906                 /* Also "remove_me" field was removed. */
 907                 &logon_divs,                                            /* w */
 908                 &hours_len,                                             /* d */
 909                 &hourslen, &hours,                                      /* B */
 910                 &bad_password_count,                                    /* w */
 911                 &logon_count,                                           /* w */
 912                 &unknown_6);                                            /* d */
 913
 914         if (len == (uint32) -1)  {
 915                 ret = False;
 916                 goto done;
 917         }
 918
 919         pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
 920         pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
 921         pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
 922         pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
 923         pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
 924         pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
 925         pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
 926
 927         pdb_set_username(sampass, username, PDB_SET);
 928         pdb_set_domain(sampass, domain, PDB_SET);
 929         pdb_set_nt_username(sampass, nt_username, PDB_SET);
 930         pdb_set_fullname(sampass, fullname, PDB_SET);
 931
 932         if (homedir) {
 933                 fstrcpy( tmp_string, homedir );
 934                 if (expand_explicit) {
 935                         standard_sub_basic( username, domain, tmp_string,
 936                                             sizeof(tmp_string) );
 937                 }
 938                 pdb_set_homedir(sampass, tmp_string, PDB_SET);
 939         }
 940         else {
 941                 pdb_set_homedir(sampass,
 942                         talloc_sub_basic(sampass, username, domain,
 943                                          lp_logon_home()),
 944                         PDB_DEFAULT);
 945         }
 946
 947         if (dir_drive)
 948                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 949         else
 950                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 951
 952         if (logon_script) {
 953                 fstrcpy( tmp_string, logon_script );
 954                 if (expand_explicit) {
 955                         standard_sub_basic( username, domain, tmp_string,
 956                                             sizeof(tmp_string) );
 957                 }
 958                 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
 959         }
 960         else {
 961                 pdb_set_logon_script(sampass,
 962                         talloc_sub_basic(sampass, username, domain,
 963                                          lp_logon_script()),
 964                         PDB_DEFAULT);
 965         }
 966
 967         if (profile_path) {
 968                 fstrcpy( tmp_string, profile_path );
 969                 if (expand_explicit) {
 970                         standard_sub_basic( username, domain, tmp_string,
 971                                             sizeof(tmp_string) );
 972                 }
 973                 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
 974         }
 975         else {
 976                 pdb_set_profile_path(sampass,
 977                         talloc_sub_basic(sampass, username, domain, lp_logon_path()),
 978                         PDB_DEFAULT);
 979         }
 980
 981         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
 982         pdb_set_workstations(sampass, workstations, PDB_SET);
 983         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
 984
 985         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
 986                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
 987                         ret = False;
 988                         goto done;
 989                 }
 990         }
 991
 992         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
 993                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
 994                         ret = False;
 995                         goto done;
 996                 }
 997         }
 998
 999         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1000         if (pwHistLen) {
1001                 uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
1002                 if (!pw_hist) {
1003                         ret = False;
1004                         goto done;
1005                 }
1006                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1007                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1008                         int i;
1009                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1010                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1011                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1012                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1013                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1014                                         PW_HISTORY_ENTRY_LEN);
1015                         }
1016                 }
1017                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1018                         SAFE_FREE(pw_hist);
1019                         ret = False;
1020                         goto done;
1021                 }
1022                 SAFE_FREE(pw_hist);
1023         } else {
1024                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1025         }
1026
1027         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1028         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1029         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1030         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1031         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1032         /* Change from V2 is the uint32 acct_ctrl */
1033         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1034         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1035         pdb_set_hours(sampass, hours, PDB_SET);
1036
1037 done:
1038
1039         SAFE_FREE(username);
1040         SAFE_FREE(domain);
1041         SAFE_FREE(nt_username);
1042         SAFE_FREE(fullname);
1043         SAFE_FREE(homedir);
1044         SAFE_FREE(dir_drive);
1045         SAFE_FREE(logon_script);
1046         SAFE_FREE(profile_path);
1047         SAFE_FREE(acct_desc);
1048         SAFE_FREE(workstations);
1049         SAFE_FREE(munged_dial);
1050         SAFE_FREE(unknown_str);
1051         SAFE_FREE(lm_pw_ptr);
1052         SAFE_FREE(nt_pw_ptr);
1053         SAFE_FREE(nt_pw_hist_ptr);
1054         SAFE_FREE(hours);
1055
1056         return ret;
1057 }
1058
1059 /*********************************************************************
1060 *********************************************************************/
1061
1062 uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, bool size_only)
1063 {
1064         size_t len, buflen;
1065
1066         /* times are stored as 32bit integer
1067            take care on system with 64bit wide time_t
1068            --SSS */
1069         uint32  logon_time,
1070                 logoff_time,
1071                 kickoff_time,
1072                 bad_password_time,
1073                 pass_last_set_time,
1074                 pass_can_change_time,
1075                 pass_must_change_time;
1076
1077         uint32  user_rid, group_rid;
1078
1079         const char *username;
1080         const char *domain;
1081         const char *nt_username;
1082         const char *dir_drive;
1083         const char *unknown_str;
1084         const char *munged_dial;
1085         const char *fullname;
1086         const char *homedir;
1087         const char *logon_script;
1088         const char *profile_path;
1089         const char *acct_desc;
1090         const char *workstations;
1091         uint32  username_len, domain_len, nt_username_len,
1092                 dir_drive_len, unknown_str_len, munged_dial_len,
1093                 fullname_len, homedir_len, logon_script_len,
1094                 profile_path_len, acct_desc_len, workstations_len;
1095
1096         const uint8 *lm_pw;
1097         const uint8 *nt_pw;
1098         const uint8 *nt_pw_hist;
1099         uint32  lm_pw_len = 16;
1100         uint32  nt_pw_len = 16;
1101         uint32  nt_pw_hist_len;
1102         uint32 pwHistLen = 0;
1103
1104         *buf = NULL;
1105         buflen = 0;
1106
1107         logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
1108         logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
1109         kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
1110         bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
1111         pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
1112         pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
1113         pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
1114
1115         user_rid = pdb_get_user_rid(sampass);
1116         group_rid = pdb_get_group_rid(sampass);
1117
1118         username = pdb_get_username(sampass);
1119         if (username) {
1120                 username_len = strlen(username) +1;
1121         } else {
1122                 username_len = 0;
1123         }
1124
1125         domain = pdb_get_domain(sampass);
1126         if (domain) {
1127                 domain_len = strlen(domain) +1;
1128         } else {
1129                 domain_len = 0;
1130         }
1131
1132         nt_username = pdb_get_nt_username(sampass);
1133         if (nt_username) {
1134                 nt_username_len = strlen(nt_username) +1;
1135         } else {
1136                 nt_username_len = 0;
1137         }
1138
1139         fullname = pdb_get_fullname(sampass);
1140         if (fullname) {
1141                 fullname_len = strlen(fullname) +1;
1142         } else {
1143                 fullname_len = 0;
1144         }
1145
1146         /*
1147          * Only updates fields which have been set (not defaults from smb.conf)
1148          */
1149
1150         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1151                 dir_drive = pdb_get_dir_drive(sampass);
1152         } else {
1153                 dir_drive = NULL;
1154         }
1155         if (dir_drive) {
1156                 dir_drive_len = strlen(dir_drive) +1;
1157         } else {
1158                 dir_drive_len = 0;
1159         }
1160
1161         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1162                 homedir = pdb_get_homedir(sampass);
1163         } else {
1164                 homedir = NULL;
1165         }
1166         if (homedir) {
1167                 homedir_len = strlen(homedir) +1;
1168         } else {
1169                 homedir_len = 0;
1170         }
1171
1172         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1173                 logon_script = pdb_get_logon_script(sampass);
1174         } else {
1175                 logon_script = NULL;
1176         }
1177         if (logon_script) {
1178                 logon_script_len = strlen(logon_script) +1;
1179         } else {
1180                 logon_script_len = 0;
1181         }
1182
1183         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1184                 profile_path = pdb_get_profile_path(sampass);
1185         } else {
1186                 profile_path = NULL;
1187         }
1188         if (profile_path) {
1189                 profile_path_len = strlen(profile_path) +1;
1190         } else {
1191                 profile_path_len = 0;
1192         }
1193
1194         lm_pw = pdb_get_lanman_passwd(sampass);
1195         if (!lm_pw) {
1196                 lm_pw_len = 0;
1197         }
1198
1199         nt_pw = pdb_get_nt_passwd(sampass);
1200         if (!nt_pw) {
1201                 nt_pw_len = 0;
1202         }
1203
1204         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1205         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
1206         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1207                 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1208         } else {
1209                 nt_pw_hist_len = 0;
1210         }
1211
1212         acct_desc = pdb_get_acct_desc(sampass);
1213         if (acct_desc) {
1214                 acct_desc_len = strlen(acct_desc) +1;
1215         } else {
1216                 acct_desc_len = 0;
1217         }
1218
1219         workstations = pdb_get_workstations(sampass);
1220         if (workstations) {
1221                 workstations_len = strlen(workstations) +1;
1222         } else {
1223                 workstations_len = 0;
1224         }
1225
1226         unknown_str = NULL;
1227         unknown_str_len = 0;
1228
1229         munged_dial = pdb_get_munged_dial(sampass);
1230         if (munged_dial) {
1231                 munged_dial_len = strlen(munged_dial) +1;
1232         } else {
1233                 munged_dial_len = 0;
1234         }
1235
1236 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1237
1238         /* one time to get the size needed */
1239         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V3,
1240                 logon_time,                             /* d */
1241                 logoff_time,                            /* d */
1242                 kickoff_time,                           /* d */
1243                 bad_password_time,                      /* d */
1244                 pass_last_set_time,                     /* d */
1245                 pass_can_change_time,                   /* d */
1246                 pass_must_change_time,                  /* d */
1247                 username_len, username,                 /* B */
1248                 domain_len, domain,                     /* B */
1249                 nt_username_len, nt_username,           /* B */
1250                 fullname_len, fullname,                 /* B */
1251                 homedir_len, homedir,                   /* B */
1252                 dir_drive_len, dir_drive,               /* B */
1253                 logon_script_len, logon_script,         /* B */
1254                 profile_path_len, profile_path,         /* B */
1255                 acct_desc_len, acct_desc,               /* B */
1256                 workstations_len, workstations,         /* B */
1257                 unknown_str_len, unknown_str,           /* B */
1258                 munged_dial_len, munged_dial,           /* B */
1259                 user_rid,                               /* d */
1260                 group_rid,                              /* d */
1261                 lm_pw_len, lm_pw,                       /* B */
1262                 nt_pw_len, nt_pw,                       /* B */
1263                 nt_pw_hist_len, nt_pw_hist,             /* B */
1264                 pdb_get_acct_ctrl(sampass),             /* d */
1265                 pdb_get_logon_divs(sampass),            /* w */
1266                 pdb_get_hours_len(sampass),             /* d */
1267                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1268                 pdb_get_bad_password_count(sampass),    /* w */
1269                 pdb_get_logon_count(sampass),           /* w */
1270                 pdb_get_unknown_6(sampass));            /* d */
1271
1272         if (size_only) {
1273                 return buflen;
1274         }
1275
1276         /* malloc the space needed */
1277         if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
1278                 DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n"));
1279                 return (-1);
1280         }
1281
1282         /* now for the real call to tdb_pack() */
1283         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING_V3,
1284                 logon_time,                             /* d */
1285                 logoff_time,                            /* d */
1286                 kickoff_time,                           /* d */
1287                 bad_password_time,                      /* d */
1288                 pass_last_set_time,                     /* d */
1289                 pass_can_change_time,                   /* d */
1290                 pass_must_change_time,                  /* d */
1291                 username_len, username,                 /* B */
1292                 domain_len, domain,                     /* B */
1293                 nt_username_len, nt_username,           /* B */
1294                 fullname_len, fullname,                 /* B */
1295                 homedir_len, homedir,                   /* B */
1296                 dir_drive_len, dir_drive,               /* B */
1297                 logon_script_len, logon_script,         /* B */
1298                 profile_path_len, profile_path,         /* B */
1299                 acct_desc_len, acct_desc,               /* B */
1300                 workstations_len, workstations,         /* B */
1301                 unknown_str_len, unknown_str,           /* B */
1302                 munged_dial_len, munged_dial,           /* B */
1303                 user_rid,                               /* d */
1304                 group_rid,                              /* d */
1305                 lm_pw_len, lm_pw,                       /* B */
1306                 nt_pw_len, nt_pw,                       /* B */
1307                 nt_pw_hist_len, nt_pw_hist,             /* B */
1308                 pdb_get_acct_ctrl(sampass),             /* d */
1309                 pdb_get_logon_divs(sampass),            /* w */
1310                 pdb_get_hours_len(sampass),             /* d */
1311                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1312                 pdb_get_bad_password_count(sampass),    /* w */
1313                 pdb_get_logon_count(sampass),           /* w */
1314                 pdb_get_unknown_6(sampass));            /* d */
1315
1316         /* check to make sure we got it correct */
1317         if (buflen != len) {
1318                 DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
1319                           (unsigned long)buflen, (unsigned long)len));
1320                 /* error */
1321                 SAFE_FREE (*buf);
1322                 return (-1);
1323         }
1324
1325         return (buflen);
1326 }
1327
1328
1329 /*********************************************************************
1330 *********************************************************************/
1331
1332 bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
1333 {
1334         uint8 *buf = NULL;
1335         int len;
1336
1337         len = init_buffer_from_sam_v3(&buf, src, False);
1338         if (len == -1 || !buf) {
1339                 SAFE_FREE(buf);
1340                 return False;
1341         }
1342
1343         if (!init_sam_from_buffer_v3( dst, buf, len )) {
1344                 free(buf);
1345                 return False;
1346         }
1347
1348         dst->methods = src->methods;
1349
1350         if ( src->unix_pw ) {
1351                 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
1352                 if (!dst->unix_pw) {
1353                         free(buf);
1354                         return False;
1355                 }
1356         }
1357
1358         free(buf);
1359         return True;
1360 }
1361
1362 /*********************************************************************
1363  Update the bad password count checking the AP_RESET_COUNT_TIME
1364 *********************************************************************/
1365
1366 bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
1367 {
1368         time_t LastBadPassword;
1369         uint16 BadPasswordCount;
1370         uint32 resettime;
1371         bool res;
1372
1373         BadPasswordCount = pdb_get_bad_password_count(sampass);
1374         if (!BadPasswordCount) {
1375                 DEBUG(9, ("No bad password attempts.\n"));
1376                 return True;
1377         }
1378
1379         become_root();
1380         res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
1381         unbecome_root();
1382
1383         if (!res) {
1384                 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
1385                 return False;
1386         }
1387
1388         /* First, check if there is a reset time to compare */
1389         if ((resettime == (uint32) -1) || (resettime == 0)) {
1390                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
1391                 return True;
1392         }
1393
1394         LastBadPassword = pdb_get_bad_password_time(sampass);
1395         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
1396                    (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
1397         if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
1398                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1399                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1400                 if (updated) {
1401                         *updated = True;
1402                 }
1403         }
1404
1405         return True;
1406 }
1407
1408 /*********************************************************************
1409  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
1410 *********************************************************************/
1411
1412 bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
1413 {
1414         uint32 duration;
1415         time_t LastBadPassword;
1416         bool res;
1417
1418         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
1419                 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
1420                         pdb_get_username(sampass)));
1421                 return True;
1422         }
1423
1424         become_root();
1425         res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
1426         unbecome_root();
1427
1428         if (!res) {
1429                 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
1430                 return False;
1431         }
1432
1433         /* First, check if there is a duration to compare */
1434         if ((duration == (uint32) -1)  || (duration == 0)) {
1435                 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
1436                 return True;
1437         }
1438
1439         LastBadPassword = pdb_get_bad_password_time(sampass);
1440         DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
1441                   pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
1442
1443         if (LastBadPassword == (time_t)0) {
1444                 DEBUG(1,("pdb_update_autolock_flag: Account %s "
1445                          "administratively locked out with no bad password "
1446                          "time. Leaving locked out.\n",
1447                          pdb_get_username(sampass) ));
1448                 return True;
1449         }
1450
1451         if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
1452                 pdb_set_acct_ctrl(sampass,
1453                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
1454                                   PDB_CHANGED);
1455                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1456                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1457                 if (updated) {
1458                         *updated = True;
1459                 }
1460         }
1461
1462         return True;
1463 }
1464
1465 /*********************************************************************
1466  Increment the bad_password_count
1467 *********************************************************************/
1468
1469 bool pdb_increment_bad_password_count(struct samu *sampass)
1470 {
1471         uint32 account_policy_lockout;
1472         bool autolock_updated = False, badpw_updated = False;
1473         bool ret;
1474
1475         /* Retrieve the account lockout policy */
1476         become_root();
1477         ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
1478         unbecome_root();
1479         if ( !ret ) {
1480                 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
1481                 return False;
1482         }
1483
1484         /* If there is no policy, we don't need to continue checking */
1485         if (!account_policy_lockout) {
1486                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
1487                 return True;
1488         }
1489
1490         /* Check if the autolock needs to be cleared */
1491         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
1492                 return False;
1493
1494         /* Check if the badpw count needs to be reset */
1495         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
1496                 return False;
1497
1498         /*
1499           Ok, now we can assume that any resetting that needs to be
1500           done has been done, and just get on with incrementing
1501           and autolocking if necessary
1502         */
1503
1504         pdb_set_bad_password_count(sampass,
1505                                    pdb_get_bad_password_count(sampass)+1,
1506                                    PDB_CHANGED);
1507         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
1508
1509
1510         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
1511                 return True;
1512
1513         if (!pdb_set_acct_ctrl(sampass,
1514                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
1515                                PDB_CHANGED)) {
1516                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
1517                 return False;
1518         }
1519
1520         return True;
1521 }
1522
1523 bool is_trusted_domain_situation(const char *domain_name)
1524 {
1525         return IS_DC &&
1526                 lp_allow_trusted_domains() &&
1527                 !strequal(domain_name, lp_workgroup());
1528 }
1529
1530 /*******************************************************************
1531  Wrapper around retrieving the clear text trust account password.
1532  appropriate account name is stored in account_name.
1533  Caller must free password, but not account_name.
1534 *******************************************************************/
1535
1536 bool get_trust_pw_clear(const char *domain, char **ret_pwd,
1537                         const char **account_name, uint32 *channel)
1538 {
1539         char *pwd;
1540         time_t last_set_time;
1541
1542         /* if we are a DC and this is not our domain, then lookup an account
1543          * for the domain trust */
1544
1545         if (is_trusted_domain_situation(domain)) {
1546                 if (!pdb_get_trusteddom_pw(domain, ret_pwd, NULL,
1547                                            &last_set_time))
1548                 {
1549                         DEBUG(0, ("get_trust_pw: could not fetch trust "
1550                                 "account password for trusted domain %s\n",
1551                                 domain));
1552                         return false;
1553                 }
1554
1555                 *channel = SEC_CHAN_DOMAIN;
1556
1557                 if (account_name != NULL) {
1558                         *account_name = lp_workgroup();
1559                 }
1560
1561                 return true;
1562         }
1563
1564         /* Just get the account for the requested domain. In the future this
1565          * might also cover to be member of more than one domain. */
1566
1567         pwd = secrets_fetch_machine_password(domain, &last_set_time, channel);
1568
1569         if (pwd != NULL) {
1570                 *ret_pwd = pwd;
1571                 if (account_name != NULL) {
1572                         *account_name = global_myname();
1573                 }
1574
1575                 return true;
1576         }
1577
1578         DEBUG(5, ("get_trust_pw_clear: could not fetch clear text trust "
1579                   "account password for domain %s\n", domain));
1580         return false;
1581 }
1582
1583 /*******************************************************************
1584  Wrapper around retrieving the trust account password.
1585  appropriate account name is stored in account_name.
1586 *******************************************************************/
1587
1588 bool get_trust_pw_hash(const char *domain, uint8 ret_pwd[16],
1589                        const char **account_name, uint32 *channel)
1590 {
1591         char *pwd = NULL;
1592         time_t last_set_time;
1593
1594         if (get_trust_pw_clear(domain, &pwd, account_name, channel)) {
1595                 E_md4hash(pwd, ret_pwd);
1596                 SAFE_FREE(pwd);
1597                 return true;
1598         } else if (is_trusted_domain_situation(domain)) {
1599                 return false;
1600         }
1601
1602         /* as a fallback, try to get the hashed pwd directly from the tdb... */
1603
1604         if (secrets_fetch_trust_account_password_legacy(domain, ret_pwd,
1605                                                         &last_set_time,
1606                                                         channel))
1607         {
1608                 if (account_name != NULL) {
1609                         *account_name = global_myname();
1610                 }
1611
1612                 return true;
1613         }
1614
1615         DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
1616                 "password for domain %s\n", domain));
1617         return False;
1618 }
1619