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_static(&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,
 624                            sid_string_static(&map.sid)));
 625                 return False;
 626         }
 627
 628         /* yes it's a mapped group */
 629         sid_peek_rid(&map.sid, rid);
 630         *type = map.sid_name_use;
 631         return True;
 632 }
 633
 634 /*************************************************************
 635  Change a password entry in the local smbpasswd file.
 636  *************************************************************/
 637
 638 NTSTATUS local_password_change(const char *user_name,
 639                                 int local_flags,
 640                                 const char *new_passwd,
 641                                 char **pp_err_str,
 642                                 char **pp_msg_str)
 643 {
 644         struct samu *sam_pass=NULL;
 645         uint32 other_acb;
 646         NTSTATUS result;
 647
 648         *pp_err_str = NULL;
 649         *pp_msg_str = NULL;
 650
 651         /* Get the smb passwd entry for this user */
 652
 653         if ( !(sam_pass = samu_new( NULL )) ) {
 654                 return NT_STATUS_NO_MEMORY;
 655         }
 656
 657         become_root();
 658         if(!pdb_getsampwnam(sam_pass, user_name)) {
 659                 unbecome_root();
 660                 TALLOC_FREE(sam_pass);
 661
 662                 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
 663                         int tmp_debug = DEBUGLEVEL;
 664                         struct passwd *pwd;
 665
 666                         /* Might not exist in /etc/passwd. */
 667
 668                         if (tmp_debug < 1) {
 669                                 DEBUGLEVEL = 1;
 670                         }
 671
 672                         if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
 673                                 return NT_STATUS_NO_SUCH_USER;
 674                         }
 675
 676                         /* create the struct samu and initialize the basic Unix properties */
 677
 678                         if ( !(sam_pass = samu_new( NULL )) ) {
 679                                 return NT_STATUS_NO_MEMORY;
 680                         }
 681
 682                         result = samu_set_unix( sam_pass, pwd );
 683
 684                         DEBUGLEVEL = tmp_debug;
 685
 686                         TALLOC_FREE( pwd );
 687
 688                         if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
 689                                 return result;
 690                         }
 691
 692                         if (!NT_STATUS_IS_OK(result)) {
 693                                 asprintf(pp_err_str, "Failed to " "initialize account for user %s: %s\n",
 694                                         user_name, nt_errstr(result));
 695                                 return result;
 696                         }
 697                 } else {
 698                         asprintf(pp_err_str, "Failed to find entry for user %s.\n", user_name);
 699                         return NT_STATUS_NO_SUCH_USER;
 700                 }
 701         } else {
 702                 unbecome_root();
 703                 /* the entry already existed */
 704                 local_flags &= ~LOCAL_ADD_USER;
 705         }
 706
 707         /* the 'other' acb bits not being changed here */
 708         other_acb =  (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
 709         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 710                 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
 711                         asprintf(pp_err_str, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
 712                         TALLOC_FREE(sam_pass);
 713                         return NT_STATUS_UNSUCCESSFUL;
 714                 }
 715         } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 716                 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
 717                         asprintf(pp_err_str, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
 718                         TALLOC_FREE(sam_pass);
 719                         return NT_STATUS_UNSUCCESSFUL;
 720                 }
 721         } else {
 722                 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
 723                         asprintf(pp_err_str, "Failed to set 'normal account' flags for user %s.\n", user_name);
 724                         TALLOC_FREE(sam_pass);
 725                         return NT_STATUS_UNSUCCESSFUL;
 726                 }
 727         }
 728
 729         /*
 730          * We are root - just write the new password
 731          * and the valid last change time.
 732          */
 733
 734         if (local_flags & LOCAL_DISABLE_USER) {
 735                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
 736                         asprintf(pp_err_str, "Failed to set 'disabled' flag for user %s.\n", user_name);
 737                         TALLOC_FREE(sam_pass);
 738                         return NT_STATUS_UNSUCCESSFUL;
 739                 }
 740         } else if (local_flags & LOCAL_ENABLE_USER) {
 741                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 742                         asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 743                         TALLOC_FREE(sam_pass);
 744                         return NT_STATUS_UNSUCCESSFUL;
 745                 }
 746         }
 747
 748         if (local_flags & LOCAL_SET_NO_PASSWORD) {
 749                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
 750                         asprintf(pp_err_str, "Failed to set 'no password required' flag for user %s.\n", user_name);
 751                         TALLOC_FREE(sam_pass);
 752                         return NT_STATUS_UNSUCCESSFUL;
 753                 }
 754         } else if (local_flags & LOCAL_SET_PASSWORD) {
 755                 /*
 756                  * If we're dealing with setting a completely empty user account
 757                  * ie. One with a password of 'XXXX', but not set disabled (like
 758                  * an account created from scratch) then if the old password was
 759                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
 760                  * We remove that as we're giving this user their first password
 761                  * and the decision hasn't really been made to disable them (ie.
 762                  * don't create them disabled). JRA.
 763                  */
 764                 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
 765                         if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 766                                 asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 767                                 TALLOC_FREE(sam_pass);
 768                                 return NT_STATUS_UNSUCCESSFUL;
 769                         }
 770                 }
 771                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
 772                         asprintf(pp_err_str, "Failed to unset 'no password required' flag for user %s.\n", user_name);
 773                         TALLOC_FREE(sam_pass);
 774                         return NT_STATUS_UNSUCCESSFUL;
 775                 }
 776
 777                 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
 778                         asprintf(pp_err_str, "Failed to set password for user %s.\n", user_name);
 779                         TALLOC_FREE(sam_pass);
 780                         return NT_STATUS_UNSUCCESSFUL;
 781                 }
 782         }
 783
 784         if (local_flags & LOCAL_ADD_USER) {
 785                 if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
 786                         asprintf(pp_msg_str, "Added user %s.\n", user_name);
 787                         TALLOC_FREE(sam_pass);
 788                         return NT_STATUS_OK;
 789                 } else {
 790                         asprintf(pp_err_str, "Failed to add entry for user %s.\n", user_name);
 791                         TALLOC_FREE(sam_pass);
 792                         return NT_STATUS_UNSUCCESSFUL;
 793                 }
 794         } else if (local_flags & LOCAL_DELETE_USER) {
 795                 if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
 796                         asprintf(pp_err_str, "Failed to delete entry for user %s.\n", user_name);
 797                         TALLOC_FREE(sam_pass);
 798                         return NT_STATUS_UNSUCCESSFUL;
 799                 }
 800                 asprintf(pp_msg_str, "Deleted user %s.\n", user_name);
 801         } else {
 802                 result = pdb_update_sam_account(sam_pass);
 803                 if(!NT_STATUS_IS_OK(result)) {
 804                         asprintf(pp_err_str, "Failed to modify entry for user %s.\n", user_name);
 805                         TALLOC_FREE(sam_pass);
 806                         return result;
 807                 }
 808                 if(local_flags & LOCAL_DISABLE_USER)
 809                         asprintf(pp_msg_str, "Disabled user %s.\n", user_name);
 810                 else if (local_flags & LOCAL_ENABLE_USER)
 811                         asprintf(pp_msg_str, "Enabled user %s.\n", user_name);
 812                 else if (local_flags & LOCAL_SET_NO_PASSWORD)
 813                         asprintf(pp_msg_str, "User %s password set to none.\n", user_name);
 814         }
 815
 816         TALLOC_FREE(sam_pass);
 817         return NT_STATUS_OK;
 818 }
 819
 820 /**********************************************************************
 821  Marshall/unmarshall struct samu structs.
 822  *********************************************************************/
 823
 824 #define TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
 825
 826 /*********************************************************************
 827 *********************************************************************/
 828
 829 bool init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
 830 {
 831
 832         /* times are stored as 32bit integer
 833            take care on system with 64bit wide time_t
 834            --SSS */
 835         uint32  logon_time,
 836                 logoff_time,
 837                 kickoff_time,
 838                 bad_password_time,
 839                 pass_last_set_time,
 840                 pass_can_change_time,
 841                 pass_must_change_time;
 842         char *username = NULL;
 843         char *domain = NULL;
 844         char *nt_username = NULL;
 845         char *dir_drive = NULL;
 846         char *unknown_str = NULL;
 847         char *munged_dial = NULL;
 848         char *fullname = NULL;
 849         char *homedir = NULL;
 850         char *logon_script = NULL;
 851         char *profile_path = NULL;
 852         char *acct_desc = NULL;
 853         char *workstations = NULL;
 854         uint32  username_len, domain_len, nt_username_len,
 855                 dir_drive_len, unknown_str_len, munged_dial_len,
 856                 fullname_len, homedir_len, logon_script_len,
 857                 profile_path_len, acct_desc_len, workstations_len;
 858
 859         uint32  user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
 860         uint16  logon_divs;
 861         uint16  bad_password_count, logon_count;
 862         uint8   *hours = NULL;
 863         uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
 864         uint32          len = 0;
 865         uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 866         uint32 pwHistLen = 0;
 867         bool ret = True;
 868         fstring tmp_string;
 869         bool expand_explicit = lp_passdb_expand_explicit();
 870
 871         if(sampass == NULL || buf == NULL) {
 872                 DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n"));
 873                 return False;
 874         }
 875
 876 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 877
 878         /* unpack the buffer into variables */
 879         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3,
 880                 &logon_time,                                            /* d */
 881                 &logoff_time,                                           /* d */
 882                 &kickoff_time,                                          /* d */
 883                 &bad_password_time,                                     /* d */
 884                 &pass_last_set_time,                                    /* d */
 885                 &pass_can_change_time,                                  /* d */
 886                 &pass_must_change_time,                                 /* d */
 887                 &username_len, &username,                               /* B */
 888                 &domain_len, &domain,                                   /* B */
 889                 &nt_username_len, &nt_username,                         /* B */
 890                 &fullname_len, &fullname,                               /* B */
 891                 &homedir_len, &homedir,                                 /* B */
 892                 &dir_drive_len, &dir_drive,                             /* B */
 893                 &logon_script_len, &logon_script,                       /* B */
 894                 &profile_path_len, &profile_path,                       /* B */
 895                 &acct_desc_len, &acct_desc,                             /* B */
 896                 &workstations_len, &workstations,                       /* B */
 897                 &unknown_str_len, &unknown_str,                         /* B */
 898                 &munged_dial_len, &munged_dial,                         /* B */
 899                 &user_rid,                                              /* d */
 900                 &group_rid,                                             /* d */
 901                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
 902                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
 903                 /* Change from V1 is addition of password history field. */
 904                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
 905                 /* Change from V2 is the uint32 acb_mask */
 906                 &acct_ctrl,                                             /* d */
 907                 /* Also "remove_me" field was removed. */
 908                 &logon_divs,                                            /* w */
 909                 &hours_len,                                             /* d */
 910                 &hourslen, &hours,                                      /* B */
 911                 &bad_password_count,                                    /* w */
 912                 &logon_count,                                           /* w */
 913                 &unknown_6);                                            /* d */
 914
 915         if (len == (uint32) -1)  {
 916                 ret = False;
 917                 goto done;
 918         }
 919
 920         pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
 921         pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
 922         pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
 923         pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
 924         pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
 925         pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
 926         pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
 927
 928         pdb_set_username(sampass, username, PDB_SET);
 929         pdb_set_domain(sampass, domain, PDB_SET);
 930         pdb_set_nt_username(sampass, nt_username, PDB_SET);
 931         pdb_set_fullname(sampass, fullname, PDB_SET);
 932
 933         if (homedir) {
 934                 fstrcpy( tmp_string, homedir );
 935                 if (expand_explicit) {
 936                         standard_sub_basic( username, domain, tmp_string,
 937                                             sizeof(tmp_string) );
 938                 }
 939                 pdb_set_homedir(sampass, tmp_string, PDB_SET);
 940         }
 941         else {
 942                 pdb_set_homedir(sampass,
 943                         talloc_sub_basic(sampass, username, domain,
 944                                          lp_logon_home()),
 945                         PDB_DEFAULT);
 946         }
 947
 948         if (dir_drive)
 949                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 950         else
 951                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 952
 953         if (logon_script) {
 954                 fstrcpy( tmp_string, logon_script );
 955                 if (expand_explicit) {
 956                         standard_sub_basic( username, domain, tmp_string,
 957                                             sizeof(tmp_string) );
 958                 }
 959                 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
 960         }
 961         else {
 962                 pdb_set_logon_script(sampass,
 963                         talloc_sub_basic(sampass, username, domain,
 964                                          lp_logon_script()),
 965                         PDB_DEFAULT);
 966         }
 967
 968         if (profile_path) {
 969                 fstrcpy( tmp_string, profile_path );
 970                 if (expand_explicit) {
 971                         standard_sub_basic( username, domain, tmp_string,
 972                                             sizeof(tmp_string) );
 973                 }
 974                 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
 975         }
 976         else {
 977                 pdb_set_profile_path(sampass,
 978                         talloc_sub_basic(sampass, username, domain, lp_logon_path()),
 979                         PDB_DEFAULT);
 980         }
 981
 982         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
 983         pdb_set_workstations(sampass, workstations, PDB_SET);
 984         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
 985
 986         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
 987                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
 988                         ret = False;
 989                         goto done;
 990                 }
 991         }
 992
 993         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
 994                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
 995                         ret = False;
 996                         goto done;
 997                 }
 998         }
 999
1000         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1001         if (pwHistLen) {
1002                 uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
1003                 if (!pw_hist) {
1004                         ret = False;
1005                         goto done;
1006                 }
1007                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1008                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1009                         int i;
1010                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1011                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1012                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1013                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1014                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1015                                         PW_HISTORY_ENTRY_LEN);
1016                         }
1017                 }
1018                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1019                         SAFE_FREE(pw_hist);
1020                         ret = False;
1021                         goto done;
1022                 }
1023                 SAFE_FREE(pw_hist);
1024         } else {
1025                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1026         }
1027
1028         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1029         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1030         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1031         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1032         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1033         /* Change from V2 is the uint32 acct_ctrl */
1034         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1035         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1036         pdb_set_hours(sampass, hours, PDB_SET);
1037
1038 done:
1039
1040         SAFE_FREE(username);
1041         SAFE_FREE(domain);
1042         SAFE_FREE(nt_username);
1043         SAFE_FREE(fullname);
1044         SAFE_FREE(homedir);
1045         SAFE_FREE(dir_drive);
1046         SAFE_FREE(logon_script);
1047         SAFE_FREE(profile_path);
1048         SAFE_FREE(acct_desc);
1049         SAFE_FREE(workstations);
1050         SAFE_FREE(munged_dial);
1051         SAFE_FREE(unknown_str);
1052         SAFE_FREE(lm_pw_ptr);
1053         SAFE_FREE(nt_pw_ptr);
1054         SAFE_FREE(nt_pw_hist_ptr);
1055         SAFE_FREE(hours);
1056
1057         return ret;
1058 }
1059
1060 /*********************************************************************
1061 *********************************************************************/
1062
1063 uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, bool size_only)
1064 {
1065         size_t len, buflen;
1066
1067         /* times are stored as 32bit integer
1068            take care on system with 64bit wide time_t
1069            --SSS */
1070         uint32  logon_time,
1071                 logoff_time,
1072                 kickoff_time,
1073                 bad_password_time,
1074                 pass_last_set_time,
1075                 pass_can_change_time,
1076                 pass_must_change_time;
1077
1078         uint32  user_rid, group_rid;
1079
1080         const char *username;
1081         const char *domain;
1082         const char *nt_username;
1083         const char *dir_drive;
1084         const char *unknown_str;
1085         const char *munged_dial;
1086         const char *fullname;
1087         const char *homedir;
1088         const char *logon_script;
1089         const char *profile_path;
1090         const char *acct_desc;
1091         const char *workstations;
1092         uint32  username_len, domain_len, nt_username_len,
1093                 dir_drive_len, unknown_str_len, munged_dial_len,
1094                 fullname_len, homedir_len, logon_script_len,
1095                 profile_path_len, acct_desc_len, workstations_len;
1096
1097         const uint8 *lm_pw;
1098         const uint8 *nt_pw;
1099         const uint8 *nt_pw_hist;
1100         uint32  lm_pw_len = 16;
1101         uint32  nt_pw_len = 16;
1102         uint32  nt_pw_hist_len;
1103         uint32 pwHistLen = 0;
1104
1105         *buf = NULL;
1106         buflen = 0;
1107
1108         logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
1109         logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
1110         kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
1111         bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
1112         pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
1113         pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
1114         pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
1115
1116         user_rid = pdb_get_user_rid(sampass);
1117         group_rid = pdb_get_group_rid(sampass);
1118
1119         username = pdb_get_username(sampass);
1120         if (username) {
1121                 username_len = strlen(username) +1;
1122         } else {
1123                 username_len = 0;
1124         }
1125
1126         domain = pdb_get_domain(sampass);
1127         if (domain) {
1128                 domain_len = strlen(domain) +1;
1129         } else {
1130                 domain_len = 0;
1131         }
1132
1133         nt_username = pdb_get_nt_username(sampass);
1134         if (nt_username) {
1135                 nt_username_len = strlen(nt_username) +1;
1136         } else {
1137                 nt_username_len = 0;
1138         }
1139
1140         fullname = pdb_get_fullname(sampass);
1141         if (fullname) {
1142                 fullname_len = strlen(fullname) +1;
1143         } else {
1144                 fullname_len = 0;
1145         }
1146
1147         /*
1148          * Only updates fields which have been set (not defaults from smb.conf)
1149          */
1150
1151         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1152                 dir_drive = pdb_get_dir_drive(sampass);
1153         } else {
1154                 dir_drive = NULL;
1155         }
1156         if (dir_drive) {
1157                 dir_drive_len = strlen(dir_drive) +1;
1158         } else {
1159                 dir_drive_len = 0;
1160         }
1161
1162         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1163                 homedir = pdb_get_homedir(sampass);
1164         } else {
1165                 homedir = NULL;
1166         }
1167         if (homedir) {
1168                 homedir_len = strlen(homedir) +1;
1169         } else {
1170                 homedir_len = 0;
1171         }
1172
1173         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1174                 logon_script = pdb_get_logon_script(sampass);
1175         } else {
1176                 logon_script = NULL;
1177         }
1178         if (logon_script) {
1179                 logon_script_len = strlen(logon_script) +1;
1180         } else {
1181                 logon_script_len = 0;
1182         }
1183
1184         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1185                 profile_path = pdb_get_profile_path(sampass);
1186         } else {
1187                 profile_path = NULL;
1188         }
1189         if (profile_path) {
1190                 profile_path_len = strlen(profile_path) +1;
1191         } else {
1192                 profile_path_len = 0;
1193         }
1194
1195         lm_pw = pdb_get_lanman_passwd(sampass);
1196         if (!lm_pw) {
1197                 lm_pw_len = 0;
1198         }
1199
1200         nt_pw = pdb_get_nt_passwd(sampass);
1201         if (!nt_pw) {
1202                 nt_pw_len = 0;
1203         }
1204
1205         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1206         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
1207         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1208                 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1209         } else {
1210                 nt_pw_hist_len = 0;
1211         }
1212
1213         acct_desc = pdb_get_acct_desc(sampass);
1214         if (acct_desc) {
1215                 acct_desc_len = strlen(acct_desc) +1;
1216         } else {
1217                 acct_desc_len = 0;
1218         }
1219
1220         workstations = pdb_get_workstations(sampass);
1221         if (workstations) {
1222                 workstations_len = strlen(workstations) +1;
1223         } else {
1224                 workstations_len = 0;
1225         }
1226
1227         unknown_str = NULL;
1228         unknown_str_len = 0;
1229
1230         munged_dial = pdb_get_munged_dial(sampass);
1231         if (munged_dial) {
1232                 munged_dial_len = strlen(munged_dial) +1;
1233         } else {
1234                 munged_dial_len = 0;
1235         }
1236
1237 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1238
1239         /* one time to get the size needed */
1240         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V3,
1241                 logon_time,                             /* d */
1242                 logoff_time,                            /* d */
1243                 kickoff_time,                           /* d */
1244                 bad_password_time,                      /* d */
1245                 pass_last_set_time,                     /* d */
1246                 pass_can_change_time,                   /* d */
1247                 pass_must_change_time,                  /* d */
1248                 username_len, username,                 /* B */
1249                 domain_len, domain,                     /* B */
1250                 nt_username_len, nt_username,           /* B */
1251                 fullname_len, fullname,                 /* B */
1252                 homedir_len, homedir,                   /* B */
1253                 dir_drive_len, dir_drive,               /* B */
1254                 logon_script_len, logon_script,         /* B */
1255                 profile_path_len, profile_path,         /* B */
1256                 acct_desc_len, acct_desc,               /* B */
1257                 workstations_len, workstations,         /* B */
1258                 unknown_str_len, unknown_str,           /* B */
1259                 munged_dial_len, munged_dial,           /* B */
1260                 user_rid,                               /* d */
1261                 group_rid,                              /* d */
1262                 lm_pw_len, lm_pw,                       /* B */
1263                 nt_pw_len, nt_pw,                       /* B */
1264                 nt_pw_hist_len, nt_pw_hist,             /* B */
1265                 pdb_get_acct_ctrl(sampass),             /* d */
1266                 pdb_get_logon_divs(sampass),            /* w */
1267                 pdb_get_hours_len(sampass),             /* d */
1268                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1269                 pdb_get_bad_password_count(sampass),    /* w */
1270                 pdb_get_logon_count(sampass),           /* w */
1271                 pdb_get_unknown_6(sampass));            /* d */
1272
1273         if (size_only) {
1274                 return buflen;
1275         }
1276
1277         /* malloc the space needed */
1278         if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
1279                 DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n"));
1280                 return (-1);
1281         }
1282
1283         /* now for the real call to tdb_pack() */
1284         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING_V3,
1285                 logon_time,                             /* d */
1286                 logoff_time,                            /* d */
1287                 kickoff_time,                           /* d */
1288                 bad_password_time,                      /* d */
1289                 pass_last_set_time,                     /* d */
1290                 pass_can_change_time,                   /* d */
1291                 pass_must_change_time,                  /* d */
1292                 username_len, username,                 /* B */
1293                 domain_len, domain,                     /* B */
1294                 nt_username_len, nt_username,           /* B */
1295                 fullname_len, fullname,                 /* B */
1296                 homedir_len, homedir,                   /* B */
1297                 dir_drive_len, dir_drive,               /* B */
1298                 logon_script_len, logon_script,         /* B */
1299                 profile_path_len, profile_path,         /* B */
1300                 acct_desc_len, acct_desc,               /* B */
1301                 workstations_len, workstations,         /* B */
1302                 unknown_str_len, unknown_str,           /* B */
1303                 munged_dial_len, munged_dial,           /* B */
1304                 user_rid,                               /* d */
1305                 group_rid,                              /* d */
1306                 lm_pw_len, lm_pw,                       /* B */
1307                 nt_pw_len, nt_pw,                       /* B */
1308                 nt_pw_hist_len, nt_pw_hist,             /* B */
1309                 pdb_get_acct_ctrl(sampass),             /* d */
1310                 pdb_get_logon_divs(sampass),            /* w */
1311                 pdb_get_hours_len(sampass),             /* d */
1312                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1313                 pdb_get_bad_password_count(sampass),    /* w */
1314                 pdb_get_logon_count(sampass),           /* w */
1315                 pdb_get_unknown_6(sampass));            /* d */
1316
1317         /* check to make sure we got it correct */
1318         if (buflen != len) {
1319                 DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
1320                           (unsigned long)buflen, (unsigned long)len));
1321                 /* error */
1322                 SAFE_FREE (*buf);
1323                 return (-1);
1324         }
1325
1326         return (buflen);
1327 }
1328
1329
1330 /*********************************************************************
1331 *********************************************************************/
1332
1333 bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
1334 {
1335         uint8 *buf = NULL;
1336         int len;
1337
1338         len = init_buffer_from_sam_v3(&buf, src, False);
1339         if (len == -1 || !buf) {
1340                 SAFE_FREE(buf);
1341                 return False;
1342         }
1343
1344         if (!init_sam_from_buffer_v3( dst, buf, len )) {
1345                 free(buf);
1346                 return False;
1347         }
1348
1349         dst->methods = src->methods;
1350
1351         if ( src->unix_pw ) {
1352                 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
1353                 if (!dst->unix_pw) {
1354                         free(buf);
1355                         return False;
1356                 }
1357         }
1358
1359         free(buf);
1360         return True;
1361 }
1362
1363 /*********************************************************************
1364  Update the bad password count checking the AP_RESET_COUNT_TIME
1365 *********************************************************************/
1366
1367 bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
1368 {
1369         time_t LastBadPassword;
1370         uint16 BadPasswordCount;
1371         uint32 resettime;
1372         bool res;
1373
1374         BadPasswordCount = pdb_get_bad_password_count(sampass);
1375         if (!BadPasswordCount) {
1376                 DEBUG(9, ("No bad password attempts.\n"));
1377                 return True;
1378         }
1379
1380         become_root();
1381         res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
1382         unbecome_root();
1383
1384         if (!res) {
1385                 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
1386                 return False;
1387         }
1388
1389         /* First, check if there is a reset time to compare */
1390         if ((resettime == (uint32) -1) || (resettime == 0)) {
1391                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
1392                 return True;
1393         }
1394
1395         LastBadPassword = pdb_get_bad_password_time(sampass);
1396         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
1397                    (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
1398         if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
1399                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1400                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1401                 if (updated) {
1402                         *updated = True;
1403                 }
1404         }
1405
1406         return True;
1407 }
1408
1409 /*********************************************************************
1410  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
1411 *********************************************************************/
1412
1413 bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
1414 {
1415         uint32 duration;
1416         time_t LastBadPassword;
1417         bool res;
1418
1419         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
1420                 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
1421                         pdb_get_username(sampass)));
1422                 return True;
1423         }
1424
1425         become_root();
1426         res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
1427         unbecome_root();
1428
1429         if (!res) {
1430                 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
1431                 return False;
1432         }
1433
1434         /* First, check if there is a duration to compare */
1435         if ((duration == (uint32) -1)  || (duration == 0)) {
1436                 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
1437                 return True;
1438         }
1439
1440         LastBadPassword = pdb_get_bad_password_time(sampass);
1441         DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
1442                   pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
1443
1444         if (LastBadPassword == (time_t)0) {
1445                 DEBUG(1,("pdb_update_autolock_flag: Account %s "
1446                          "administratively locked out with no bad password "
1447                          "time. Leaving locked out.\n",
1448                          pdb_get_username(sampass) ));
1449                 return True;
1450         }
1451
1452         if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
1453                 pdb_set_acct_ctrl(sampass,
1454                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
1455                                   PDB_CHANGED);
1456                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1457                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1458                 if (updated) {
1459                         *updated = True;
1460                 }
1461         }
1462
1463         return True;
1464 }
1465
1466 /*********************************************************************
1467  Increment the bad_password_count
1468 *********************************************************************/
1469
1470 bool pdb_increment_bad_password_count(struct samu *sampass)
1471 {
1472         uint32 account_policy_lockout;
1473         bool autolock_updated = False, badpw_updated = False;
1474         bool ret;
1475
1476         /* Retrieve the account lockout policy */
1477         become_root();
1478         ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
1479         unbecome_root();
1480         if ( !ret ) {
1481                 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
1482                 return False;
1483         }
1484
1485         /* If there is no policy, we don't need to continue checking */
1486         if (!account_policy_lockout) {
1487                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
1488                 return True;
1489         }
1490
1491         /* Check if the autolock needs to be cleared */
1492         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
1493                 return False;
1494
1495         /* Check if the badpw count needs to be reset */
1496         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
1497                 return False;
1498
1499         /*
1500           Ok, now we can assume that any resetting that needs to be
1501           done has been done, and just get on with incrementing
1502           and autolocking if necessary
1503         */
1504
1505         pdb_set_bad_password_count(sampass,
1506                                    pdb_get_bad_password_count(sampass)+1,
1507                                    PDB_CHANGED);
1508         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
1509
1510
1511         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
1512                 return True;
1513
1514         if (!pdb_set_acct_ctrl(sampass,
1515                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
1516                                PDB_CHANGED)) {
1517                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
1518                 return False;
1519         }
1520
1521         return True;
1522 }
1523
1524 bool is_trusted_domain_situation(const char *domain_name)
1525 {
1526         return IS_DC &&
1527                 lp_allow_trusted_domains() &&
1528                 !strequal(domain_name, lp_workgroup());
1529 }
1530
1531 /*******************************************************************
1532  Wrapper around retrieving the clear text trust account password.
1533  appropriate account name is stored in account_name.
1534  Caller must free password, but not account_name.
1535 *******************************************************************/
1536
1537 bool get_trust_pw_clear(const char *domain, char **ret_pwd,
1538                         const char **account_name, uint32 *channel)
1539 {
1540         DOM_SID sid;
1541         char *pwd;
1542         time_t last_set_time;
1543
1544         /* if we are a DC and this is not our domain, then lookup an account
1545          * for the domain trust */
1546
1547         if (is_trusted_domain_situation(domain)) {
1548                 if (!pdb_get_trusteddom_pw(domain, ret_pwd, &sid,
1549                                            &last_set_time))
1550                 {
1551                         DEBUG(0, ("get_trust_pw: could not fetch trust "
1552                                 "account password for trusted domain %s\n",
1553                                 domain));
1554                         return false;
1555                 }
1556
1557                 *channel = SEC_CHAN_DOMAIN;
1558
1559                 if (account_name != NULL) {
1560                         *account_name = lp_workgroup();
1561                 }
1562
1563                 return true;
1564         }
1565
1566         /* Just get the account for the requested domain. In the future this
1567          * might also cover to be member of more than one domain. */
1568
1569         pwd = secrets_fetch_machine_password(domain, &last_set_time, channel);
1570
1571         if (pwd != NULL) {
1572                 *ret_pwd = pwd;
1573                 if (account_name != NULL) {
1574                         *account_name = global_myname();
1575                 }
1576
1577                 return true;
1578         }
1579
1580         DEBUG(5, ("get_trust_pw_clear: could not fetch clear text trust "
1581                   "account password for domain %s\n", domain));
1582         return false;
1583 }
1584
1585 /*******************************************************************
1586  Wrapper around retrieving the trust account password.
1587  appropriate account name is stored in account_name.
1588 *******************************************************************/
1589
1590 bool get_trust_pw(const char *domain, uint8 ret_pwd[16],
1591                   const char **account_name, uint32 *channel)
1592 {
1593         char *pwd = NULL;
1594         time_t last_set_time;
1595
1596         if (get_trust_pw_clear(domain, &pwd, account_name, channel)) {
1597                 E_md4hash(pwd, ret_pwd);
1598                 SAFE_FREE(pwd);
1599                 return true;
1600         } else if (is_trusted_domain_situation(domain)) {
1601                 return false;
1602         }
1603
1604         /* as a fallback, try to get the hashed pwd directly from the tdb... */
1605
1606         if (secrets_fetch_trust_account_password_legacy(domain, ret_pwd,
1607                                                         &last_set_time,
1608                                                         channel))
1609         {
1610                 if (account_name != NULL) {
1611                         *account_name = global_myname();
1612                 }
1613
1614                 return true;
1615         }
1616
1617         DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
1618                 "password for domain %s\n", domain));
1619         return False;
1620 }
1621