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            netr_SamInfo3 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_t 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_t pdb_decode_acct_ctrl(const char *p)
 302 {
 303         uint32_t 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         int rid_offset;
 447
 448         rid_offset = lp_algorithmic_rid_base();
 449
 450         if (rid_offset < BASE_RID) {
 451                 /* Try to prevent admin foot-shooting, we can't put algorithmic
 452                    rids below 1000, that's the 'well known RIDs' on NT */
 453                 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
 454                 rid_offset = BASE_RID;
 455         }
 456         if (rid_offset & 1) {
 457                 DEBUG(0, ("algorithmic rid base must be even\n"));
 458                 rid_offset += 1;
 459         }
 460         return rid_offset;
 461 }
 462
 463 /*******************************************************************
 464  Converts NT user RID to a UNIX uid.
 465  ********************************************************************/
 466
 467 uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid)
 468 {
 469         int rid_offset = algorithmic_rid_base();
 470         return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 471 }
 472
 473 uid_t max_algorithmic_uid(void)
 474 {
 475         return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
 476 }
 477
 478 /*******************************************************************
 479  converts UNIX uid to an NT User RID.
 480  ********************************************************************/
 481
 482 uint32 algorithmic_pdb_uid_to_user_rid(uid_t uid)
 483 {
 484         int rid_offset = algorithmic_rid_base();
 485         return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
 486 }
 487
 488 /*******************************************************************
 489  Converts NT group RID to a UNIX gid.
 490  ********************************************************************/
 491
 492 gid_t pdb_group_rid_to_gid(uint32 group_rid)
 493 {
 494         int rid_offset = algorithmic_rid_base();
 495         return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 496 }
 497
 498 gid_t max_algorithmic_gid(void)
 499 {
 500         return pdb_group_rid_to_gid(0xffffffff);
 501 }
 502
 503 /*******************************************************************
 504  converts NT Group RID to a UNIX uid.
 505
 506  warning: you must not call that function only
 507  you must do a call to the group mapping first.
 508  there is not anymore a direct link between the gid and the rid.
 509  ********************************************************************/
 510
 511 uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid)
 512 {
 513         int rid_offset = algorithmic_rid_base();
 514         return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
 515 }
 516
 517 /*******************************************************************
 518  Decides if a RID is a well known RID.
 519  ********************************************************************/
 520
 521 static bool rid_is_well_known(uint32 rid)
 522 {
 523         /* Not using rid_offset here, because this is the actual
 524            NT fixed value (1000) */
 525
 526         return (rid < BASE_RID);
 527 }
 528
 529 /*******************************************************************
 530  Decides if a RID is a user or group RID.
 531  ********************************************************************/
 532
 533 bool algorithmic_pdb_rid_is_user(uint32 rid)
 534 {
 535         if ( rid_is_well_known(rid) ) {
 536                 /*
 537                  * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
 538                  * and DOMAIN_USER_RID_GUEST.
 539                  */
 540                 if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
 541                         return True;
 542         } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
 543                 return True;
 544         }
 545         return False;
 546 }
 547
 548 /*******************************************************************
 549  Convert a name into a SID. Used in the lookup name rpc.
 550  ********************************************************************/
 551
 552 bool lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
 553                             enum lsa_SidType *type)
 554 {
 555         GROUP_MAP map;
 556         bool ret;
 557
 558         /* Windows treats "MACHINE\None" as a special name for
 559            rid 513 on non-DCs.  You cannot create a user or group
 560            name "None" on Windows.  You will get an error that
 561            the group already exists. */
 562
 563         if ( strequal( name, "None" ) ) {
 564                 *rid = DOMAIN_GROUP_RID_USERS;
 565                 *type = SID_NAME_DOM_GRP;
 566
 567                 return True;
 568         }
 569
 570         /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
 571          * correctly in the case where foo also exists as a user. If the flag
 572          * is set, don't look for users at all. */
 573
 574         if ((flags & LOOKUP_NAME_GROUP) == 0) {
 575                 struct samu *sam_account = NULL;
 576                 DOM_SID user_sid;
 577
 578                 if ( !(sam_account = samu_new( NULL )) ) {
 579                         return False;
 580                 }
 581
 582                 become_root();
 583                 ret =  pdb_getsampwnam(sam_account, name);
 584                 unbecome_root();
 585
 586                 if (ret) {
 587                         sid_copy(&user_sid, pdb_get_user_sid(sam_account));
 588                 }
 589
 590                 TALLOC_FREE(sam_account);
 591
 592                 if (ret) {
 593                         if (!sid_check_is_in_our_domain(&user_sid)) {
 594                                 DEBUG(0, ("User %s with invalid SID %s in passdb\n",
 595                                           name, sid_string_dbg(&user_sid)));
 596                                 return False;
 597                         }
 598
 599                         sid_peek_rid(&user_sid, rid);
 600                         *type = SID_NAME_USER;
 601                         return True;
 602                 }
 603         }
 604
 605         /*
 606          * Maybe it is a group ?
 607          */
 608
 609         become_root();
 610         ret = pdb_getgrnam(&map, name);
 611         unbecome_root();
 612
 613         if (!ret) {
 614                 return False;
 615         }
 616
 617         /* BUILTIN groups are looked up elsewhere */
 618         if (!sid_check_is_in_our_domain(&map.sid)) {
 619                 DEBUG(10, ("Found group %s (%s) not in our domain -- "
 620                            "ignoring.", name, sid_string_dbg(&map.sid)));
 621                 return False;
 622         }
 623
 624         /* yes it's a mapped group */
 625         sid_peek_rid(&map.sid, rid);
 626         *type = map.sid_name_use;
 627         return True;
 628 }
 629
 630 /*************************************************************
 631  Change a password entry in the local smbpasswd file.
 632  *************************************************************/
 633
 634 NTSTATUS local_password_change(const char *user_name,
 635                                 int local_flags,
 636                                 const char *new_passwd,
 637                                 char **pp_err_str,
 638                                 char **pp_msg_str)
 639 {
 640         struct samu *sam_pass=NULL;
 641         uint32 other_acb;
 642         NTSTATUS result;
 643
 644         *pp_err_str = NULL;
 645         *pp_msg_str = NULL;
 646
 647         /* Get the smb passwd entry for this user */
 648
 649         if ( !(sam_pass = samu_new( NULL )) ) {
 650                 return NT_STATUS_NO_MEMORY;
 651         }
 652
 653         become_root();
 654         if(!pdb_getsampwnam(sam_pass, user_name)) {
 655                 unbecome_root();
 656                 TALLOC_FREE(sam_pass);
 657
 658                 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
 659                         int tmp_debug = DEBUGLEVEL;
 660                         struct passwd *pwd;
 661
 662                         /* Might not exist in /etc/passwd. */
 663
 664                         if (tmp_debug < 1) {
 665                                 DEBUGLEVEL = 1;
 666                         }
 667
 668                         if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
 669                                 return NT_STATUS_NO_SUCH_USER;
 670                         }
 671
 672                         /* create the struct samu and initialize the basic Unix properties */
 673
 674                         if ( !(sam_pass = samu_new( NULL )) ) {
 675                                 return NT_STATUS_NO_MEMORY;
 676                         }
 677
 678                         result = samu_set_unix( sam_pass, pwd );
 679
 680                         DEBUGLEVEL = tmp_debug;
 681
 682                         TALLOC_FREE( pwd );
 683
 684                         if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
 685                                 return result;
 686                         }
 687
 688                         if (!NT_STATUS_IS_OK(result)) {
 689                                 asprintf(pp_err_str, "Failed to " "initialize account for user %s: %s\n",
 690                                         user_name, nt_errstr(result));
 691                                 return result;
 692                         }
 693                 } else {
 694                         asprintf(pp_err_str, "Failed to find entry for user %s.\n", user_name);
 695                         return NT_STATUS_NO_SUCH_USER;
 696                 }
 697         } else {
 698                 unbecome_root();
 699                 /* the entry already existed */
 700                 local_flags &= ~LOCAL_ADD_USER;
 701         }
 702
 703         /* the 'other' acb bits not being changed here */
 704         other_acb =  (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
 705         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 706                 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
 707                         asprintf(pp_err_str, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
 708                         TALLOC_FREE(sam_pass);
 709                         return NT_STATUS_UNSUCCESSFUL;
 710                 }
 711         } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 712                 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
 713                         asprintf(pp_err_str, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
 714                         TALLOC_FREE(sam_pass);
 715                         return NT_STATUS_UNSUCCESSFUL;
 716                 }
 717         } else {
 718                 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
 719                         asprintf(pp_err_str, "Failed to set 'normal account' flags for user %s.\n", user_name);
 720                         TALLOC_FREE(sam_pass);
 721                         return NT_STATUS_UNSUCCESSFUL;
 722                 }
 723         }
 724
 725         /*
 726          * We are root - just write the new password
 727          * and the valid last change time.
 728          */
 729
 730         if (local_flags & LOCAL_DISABLE_USER) {
 731                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
 732                         asprintf(pp_err_str, "Failed to set 'disabled' flag for user %s.\n", user_name);
 733                         TALLOC_FREE(sam_pass);
 734                         return NT_STATUS_UNSUCCESSFUL;
 735                 }
 736         } else if (local_flags & LOCAL_ENABLE_USER) {
 737                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 738                         asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 739                         TALLOC_FREE(sam_pass);
 740                         return NT_STATUS_UNSUCCESSFUL;
 741                 }
 742         }
 743
 744         if (local_flags & LOCAL_SET_NO_PASSWORD) {
 745                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
 746                         asprintf(pp_err_str, "Failed to set 'no password required' flag for user %s.\n", user_name);
 747                         TALLOC_FREE(sam_pass);
 748                         return NT_STATUS_UNSUCCESSFUL;
 749                 }
 750         } else if (local_flags & LOCAL_SET_PASSWORD) {
 751                 /*
 752                  * If we're dealing with setting a completely empty user account
 753                  * ie. One with a password of 'XXXX', but not set disabled (like
 754                  * an account created from scratch) then if the old password was
 755                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
 756                  * We remove that as we're giving this user their first password
 757                  * and the decision hasn't really been made to disable them (ie.
 758                  * don't create them disabled). JRA.
 759                  */
 760                 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
 761                         if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 762                                 asprintf(pp_err_str, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 763                                 TALLOC_FREE(sam_pass);
 764                                 return NT_STATUS_UNSUCCESSFUL;
 765                         }
 766                 }
 767                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
 768                         asprintf(pp_err_str, "Failed to unset 'no password required' flag for user %s.\n", user_name);
 769                         TALLOC_FREE(sam_pass);
 770                         return NT_STATUS_UNSUCCESSFUL;
 771                 }
 772
 773                 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
 774                         asprintf(pp_err_str, "Failed to set password for user %s.\n", user_name);
 775                         TALLOC_FREE(sam_pass);
 776                         return NT_STATUS_UNSUCCESSFUL;
 777                 }
 778         }
 779
 780         if (local_flags & LOCAL_ADD_USER) {
 781                 if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
 782                         asprintf(pp_msg_str, "Added user %s.\n", user_name);
 783                         TALLOC_FREE(sam_pass);
 784                         return NT_STATUS_OK;
 785                 } else {
 786                         asprintf(pp_err_str, "Failed to add entry for user %s.\n", user_name);
 787                         TALLOC_FREE(sam_pass);
 788                         return NT_STATUS_UNSUCCESSFUL;
 789                 }
 790         } else if (local_flags & LOCAL_DELETE_USER) {
 791                 if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
 792                         asprintf(pp_err_str, "Failed to delete entry for user %s.\n", user_name);
 793                         TALLOC_FREE(sam_pass);
 794                         return NT_STATUS_UNSUCCESSFUL;
 795                 }
 796                 asprintf(pp_msg_str, "Deleted user %s.\n", user_name);
 797         } else {
 798                 result = pdb_update_sam_account(sam_pass);
 799                 if(!NT_STATUS_IS_OK(result)) {
 800                         asprintf(pp_err_str, "Failed to modify entry for user %s.\n", user_name);
 801                         TALLOC_FREE(sam_pass);
 802                         return result;
 803                 }
 804                 if(local_flags & LOCAL_DISABLE_USER)
 805                         asprintf(pp_msg_str, "Disabled user %s.\n", user_name);
 806                 else if (local_flags & LOCAL_ENABLE_USER)
 807                         asprintf(pp_msg_str, "Enabled user %s.\n", user_name);
 808                 else if (local_flags & LOCAL_SET_NO_PASSWORD)
 809                         asprintf(pp_msg_str, "User %s password set to none.\n", user_name);
 810         }
 811
 812         TALLOC_FREE(sam_pass);
 813         return NT_STATUS_OK;
 814 }
 815
 816 /**********************************************************************
 817  Marshall/unmarshall struct samu structs.
 818  *********************************************************************/
 819
 820 #define TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
 821
 822 /*********************************************************************
 823 *********************************************************************/
 824
 825 bool init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
 826 {
 827
 828         /* times are stored as 32bit integer
 829            take care on system with 64bit wide time_t
 830            --SSS */
 831         uint32  logon_time,
 832                 logoff_time,
 833                 kickoff_time,
 834                 bad_password_time,
 835                 pass_last_set_time,
 836                 pass_can_change_time,
 837                 pass_must_change_time;
 838         char *username = NULL;
 839         char *domain = NULL;
 840         char *nt_username = NULL;
 841         char *dir_drive = NULL;
 842         char *unknown_str = NULL;
 843         char *munged_dial = NULL;
 844         char *fullname = NULL;
 845         char *homedir = NULL;
 846         char *logon_script = NULL;
 847         char *profile_path = NULL;
 848         char *acct_desc = NULL;
 849         char *workstations = NULL;
 850         uint32  username_len, domain_len, nt_username_len,
 851                 dir_drive_len, unknown_str_len, munged_dial_len,
 852                 fullname_len, homedir_len, logon_script_len,
 853                 profile_path_len, acct_desc_len, workstations_len;
 854
 855         uint32  user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
 856         uint16  logon_divs;
 857         uint16  bad_password_count, logon_count;
 858         uint8   *hours = NULL;
 859         uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
 860         uint32          len = 0;
 861         uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 862         uint32 pwHistLen = 0;
 863         bool ret = True;
 864         fstring tmp_string;
 865         bool expand_explicit = lp_passdb_expand_explicit();
 866
 867         if(sampass == NULL || buf == NULL) {
 868                 DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n"));
 869                 return False;
 870         }
 871
 872 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 873
 874         /* unpack the buffer into variables */
 875         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3,
 876                 &logon_time,                                            /* d */
 877                 &logoff_time,                                           /* d */
 878                 &kickoff_time,                                          /* d */
 879                 &bad_password_time,                                     /* d */
 880                 &pass_last_set_time,                                    /* d */
 881                 &pass_can_change_time,                                  /* d */
 882                 &pass_must_change_time,                                 /* d */
 883                 &username_len, &username,                               /* B */
 884                 &domain_len, &domain,                                   /* B */
 885                 &nt_username_len, &nt_username,                         /* B */
 886                 &fullname_len, &fullname,                               /* B */
 887                 &homedir_len, &homedir,                                 /* B */
 888                 &dir_drive_len, &dir_drive,                             /* B */
 889                 &logon_script_len, &logon_script,                       /* B */
 890                 &profile_path_len, &profile_path,                       /* B */
 891                 &acct_desc_len, &acct_desc,                             /* B */
 892                 &workstations_len, &workstations,                       /* B */
 893                 &unknown_str_len, &unknown_str,                         /* B */
 894                 &munged_dial_len, &munged_dial,                         /* B */
 895                 &user_rid,                                              /* d */
 896                 &group_rid,                                             /* d */
 897                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
 898                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
 899                 /* Change from V1 is addition of password history field. */
 900                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
 901                 /* Change from V2 is the uint32 acb_mask */
 902                 &acct_ctrl,                                             /* d */
 903                 /* Also "remove_me" field was removed. */
 904                 &logon_divs,                                            /* w */
 905                 &hours_len,                                             /* d */
 906                 &hourslen, &hours,                                      /* B */
 907                 &bad_password_count,                                    /* w */
 908                 &logon_count,                                           /* w */
 909                 &unknown_6);                                            /* d */
 910
 911         if (len == (uint32) -1)  {
 912                 ret = False;
 913                 goto done;
 914         }
 915
 916         pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
 917         pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
 918         pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
 919         pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
 920         pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
 921         pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
 922         pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
 923
 924         pdb_set_username(sampass, username, PDB_SET);
 925         pdb_set_domain(sampass, domain, PDB_SET);
 926         pdb_set_nt_username(sampass, nt_username, PDB_SET);
 927         pdb_set_fullname(sampass, fullname, PDB_SET);
 928
 929         if (homedir) {
 930                 fstrcpy( tmp_string, homedir );
 931                 if (expand_explicit) {
 932                         standard_sub_basic( username, domain, tmp_string,
 933                                             sizeof(tmp_string) );
 934                 }
 935                 pdb_set_homedir(sampass, tmp_string, PDB_SET);
 936         }
 937         else {
 938                 pdb_set_homedir(sampass,
 939                         talloc_sub_basic(sampass, username, domain,
 940                                          lp_logon_home()),
 941                         PDB_DEFAULT);
 942         }
 943
 944         if (dir_drive)
 945                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 946         else
 947                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 948
 949         if (logon_script) {
 950                 fstrcpy( tmp_string, logon_script );
 951                 if (expand_explicit) {
 952                         standard_sub_basic( username, domain, tmp_string,
 953                                             sizeof(tmp_string) );
 954                 }
 955                 pdb_set_logon_script(sampass, tmp_string, PDB_SET);
 956         }
 957         else {
 958                 pdb_set_logon_script(sampass,
 959                         talloc_sub_basic(sampass, username, domain,
 960                                          lp_logon_script()),
 961                         PDB_DEFAULT);
 962         }
 963
 964         if (profile_path) {
 965                 fstrcpy( tmp_string, profile_path );
 966                 if (expand_explicit) {
 967                         standard_sub_basic( username, domain, tmp_string,
 968                                             sizeof(tmp_string) );
 969                 }
 970                 pdb_set_profile_path(sampass, tmp_string, PDB_SET);
 971         }
 972         else {
 973                 pdb_set_profile_path(sampass,
 974                         talloc_sub_basic(sampass, username, domain, lp_logon_path()),
 975                         PDB_DEFAULT);
 976         }
 977
 978         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
 979         pdb_set_workstations(sampass, workstations, PDB_SET);
 980         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
 981
 982         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
 983                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
 984                         ret = False;
 985                         goto done;
 986                 }
 987         }
 988
 989         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
 990                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
 991                         ret = False;
 992                         goto done;
 993                 }
 994         }
 995
 996         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
 997         if (pwHistLen) {
 998                 uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
 999                 if (!pw_hist) {
1000                         ret = False;
1001                         goto done;
1002                 }
1003                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1004                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1005                         int i;
1006                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1007                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1008                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1009                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1010                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1011                                         PW_HISTORY_ENTRY_LEN);
1012                         }
1013                 }
1014                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1015                         SAFE_FREE(pw_hist);
1016                         ret = False;
1017                         goto done;
1018                 }
1019                 SAFE_FREE(pw_hist);
1020         } else {
1021                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1022         }
1023
1024         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1025         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1026         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1027         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1028         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1029         /* Change from V2 is the uint32 acct_ctrl */
1030         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1031         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1032         pdb_set_hours(sampass, hours, PDB_SET);
1033
1034 done:
1035
1036         SAFE_FREE(username);
1037         SAFE_FREE(domain);
1038         SAFE_FREE(nt_username);
1039         SAFE_FREE(fullname);
1040         SAFE_FREE(homedir);
1041         SAFE_FREE(dir_drive);
1042         SAFE_FREE(logon_script);
1043         SAFE_FREE(profile_path);
1044         SAFE_FREE(acct_desc);
1045         SAFE_FREE(workstations);
1046         SAFE_FREE(munged_dial);
1047         SAFE_FREE(unknown_str);
1048         SAFE_FREE(lm_pw_ptr);
1049         SAFE_FREE(nt_pw_ptr);
1050         SAFE_FREE(nt_pw_hist_ptr);
1051         SAFE_FREE(hours);
1052
1053         return ret;
1054 }
1055
1056 /*********************************************************************
1057 *********************************************************************/
1058
1059 uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, bool size_only)
1060 {
1061         size_t len, buflen;
1062
1063         /* times are stored as 32bit integer
1064            take care on system with 64bit wide time_t
1065            --SSS */
1066         uint32  logon_time,
1067                 logoff_time,
1068                 kickoff_time,
1069                 bad_password_time,
1070                 pass_last_set_time,
1071                 pass_can_change_time,
1072                 pass_must_change_time;
1073
1074         uint32  user_rid, group_rid;
1075
1076         const char *username;
1077         const char *domain;
1078         const char *nt_username;
1079         const char *dir_drive;
1080         const char *unknown_str;
1081         const char *munged_dial;
1082         const char *fullname;
1083         const char *homedir;
1084         const char *logon_script;
1085         const char *profile_path;
1086         const char *acct_desc;
1087         const char *workstations;
1088         uint32  username_len, domain_len, nt_username_len,
1089                 dir_drive_len, unknown_str_len, munged_dial_len,
1090                 fullname_len, homedir_len, logon_script_len,
1091                 profile_path_len, acct_desc_len, workstations_len;
1092
1093         const uint8 *lm_pw;
1094         const uint8 *nt_pw;
1095         const uint8 *nt_pw_hist;
1096         uint32  lm_pw_len = 16;
1097         uint32  nt_pw_len = 16;
1098         uint32  nt_pw_hist_len;
1099         uint32 pwHistLen = 0;
1100
1101         *buf = NULL;
1102         buflen = 0;
1103
1104         logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
1105         logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
1106         kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
1107         bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
1108         pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
1109         pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
1110         pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
1111
1112         user_rid = pdb_get_user_rid(sampass);
1113         group_rid = pdb_get_group_rid(sampass);
1114
1115         username = pdb_get_username(sampass);
1116         if (username) {
1117                 username_len = strlen(username) +1;
1118         } else {
1119                 username_len = 0;
1120         }
1121
1122         domain = pdb_get_domain(sampass);
1123         if (domain) {
1124                 domain_len = strlen(domain) +1;
1125         } else {
1126                 domain_len = 0;
1127         }
1128
1129         nt_username = pdb_get_nt_username(sampass);
1130         if (nt_username) {
1131                 nt_username_len = strlen(nt_username) +1;
1132         } else {
1133                 nt_username_len = 0;
1134         }
1135
1136         fullname = pdb_get_fullname(sampass);
1137         if (fullname) {
1138                 fullname_len = strlen(fullname) +1;
1139         } else {
1140                 fullname_len = 0;
1141         }
1142
1143         /*
1144          * Only updates fields which have been set (not defaults from smb.conf)
1145          */
1146
1147         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1148                 dir_drive = pdb_get_dir_drive(sampass);
1149         } else {
1150                 dir_drive = NULL;
1151         }
1152         if (dir_drive) {
1153                 dir_drive_len = strlen(dir_drive) +1;
1154         } else {
1155                 dir_drive_len = 0;
1156         }
1157
1158         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1159                 homedir = pdb_get_homedir(sampass);
1160         } else {
1161                 homedir = NULL;
1162         }
1163         if (homedir) {
1164                 homedir_len = strlen(homedir) +1;
1165         } else {
1166                 homedir_len = 0;
1167         }
1168
1169         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1170                 logon_script = pdb_get_logon_script(sampass);
1171         } else {
1172                 logon_script = NULL;
1173         }
1174         if (logon_script) {
1175                 logon_script_len = strlen(logon_script) +1;
1176         } else {
1177                 logon_script_len = 0;
1178         }
1179
1180         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1181                 profile_path = pdb_get_profile_path(sampass);
1182         } else {
1183                 profile_path = NULL;
1184         }
1185         if (profile_path) {
1186                 profile_path_len = strlen(profile_path) +1;
1187         } else {
1188                 profile_path_len = 0;
1189         }
1190
1191         lm_pw = pdb_get_lanman_passwd(sampass);
1192         if (!lm_pw) {
1193                 lm_pw_len = 0;
1194         }
1195
1196         nt_pw = pdb_get_nt_passwd(sampass);
1197         if (!nt_pw) {
1198                 nt_pw_len = 0;
1199         }
1200
1201         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1202         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
1203         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1204                 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1205         } else {
1206                 nt_pw_hist_len = 0;
1207         }
1208
1209         acct_desc = pdb_get_acct_desc(sampass);
1210         if (acct_desc) {
1211                 acct_desc_len = strlen(acct_desc) +1;
1212         } else {
1213                 acct_desc_len = 0;
1214         }
1215
1216         workstations = pdb_get_workstations(sampass);
1217         if (workstations) {
1218                 workstations_len = strlen(workstations) +1;
1219         } else {
1220                 workstations_len = 0;
1221         }
1222
1223         unknown_str = NULL;
1224         unknown_str_len = 0;
1225
1226         munged_dial = pdb_get_munged_dial(sampass);
1227         if (munged_dial) {
1228                 munged_dial_len = strlen(munged_dial) +1;
1229         } else {
1230                 munged_dial_len = 0;
1231         }
1232
1233 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1234
1235         /* one time to get the size needed */
1236         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V3,
1237                 logon_time,                             /* d */
1238                 logoff_time,                            /* d */
1239                 kickoff_time,                           /* d */
1240                 bad_password_time,                      /* d */
1241                 pass_last_set_time,                     /* d */
1242                 pass_can_change_time,                   /* d */
1243                 pass_must_change_time,                  /* d */
1244                 username_len, username,                 /* B */
1245                 domain_len, domain,                     /* B */
1246                 nt_username_len, nt_username,           /* B */
1247                 fullname_len, fullname,                 /* B */
1248                 homedir_len, homedir,                   /* B */
1249                 dir_drive_len, dir_drive,               /* B */
1250                 logon_script_len, logon_script,         /* B */
1251                 profile_path_len, profile_path,         /* B */
1252                 acct_desc_len, acct_desc,               /* B */
1253                 workstations_len, workstations,         /* B */
1254                 unknown_str_len, unknown_str,           /* B */
1255                 munged_dial_len, munged_dial,           /* B */
1256                 user_rid,                               /* d */
1257                 group_rid,                              /* d */
1258                 lm_pw_len, lm_pw,                       /* B */
1259                 nt_pw_len, nt_pw,                       /* B */
1260                 nt_pw_hist_len, nt_pw_hist,             /* B */
1261                 pdb_get_acct_ctrl(sampass),             /* d */
1262                 pdb_get_logon_divs(sampass),            /* w */
1263                 pdb_get_hours_len(sampass),             /* d */
1264                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1265                 pdb_get_bad_password_count(sampass),    /* w */
1266                 pdb_get_logon_count(sampass),           /* w */
1267                 pdb_get_unknown_6(sampass));            /* d */
1268
1269         if (size_only) {
1270                 return buflen;
1271         }
1272
1273         /* malloc the space needed */
1274         if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
1275                 DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n"));
1276                 return (-1);
1277         }
1278
1279         /* now for the real call to tdb_pack() */
1280         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING_V3,
1281                 logon_time,                             /* d */
1282                 logoff_time,                            /* d */
1283                 kickoff_time,                           /* d */
1284                 bad_password_time,                      /* d */
1285                 pass_last_set_time,                     /* d */
1286                 pass_can_change_time,                   /* d */
1287                 pass_must_change_time,                  /* d */
1288                 username_len, username,                 /* B */
1289                 domain_len, domain,                     /* B */
1290                 nt_username_len, nt_username,           /* B */
1291                 fullname_len, fullname,                 /* B */
1292                 homedir_len, homedir,                   /* B */
1293                 dir_drive_len, dir_drive,               /* B */
1294                 logon_script_len, logon_script,         /* B */
1295                 profile_path_len, profile_path,         /* B */
1296                 acct_desc_len, acct_desc,               /* B */
1297                 workstations_len, workstations,         /* B */
1298                 unknown_str_len, unknown_str,           /* B */
1299                 munged_dial_len, munged_dial,           /* B */
1300                 user_rid,                               /* d */
1301                 group_rid,                              /* d */
1302                 lm_pw_len, lm_pw,                       /* B */
1303                 nt_pw_len, nt_pw,                       /* B */
1304                 nt_pw_hist_len, nt_pw_hist,             /* B */
1305                 pdb_get_acct_ctrl(sampass),             /* d */
1306                 pdb_get_logon_divs(sampass),            /* w */
1307                 pdb_get_hours_len(sampass),             /* d */
1308                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1309                 pdb_get_bad_password_count(sampass),    /* w */
1310                 pdb_get_logon_count(sampass),           /* w */
1311                 pdb_get_unknown_6(sampass));            /* d */
1312
1313         /* check to make sure we got it correct */
1314         if (buflen != len) {
1315                 DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
1316                           (unsigned long)buflen, (unsigned long)len));
1317                 /* error */
1318                 SAFE_FREE (*buf);
1319                 return (-1);
1320         }
1321
1322         return (buflen);
1323 }
1324
1325
1326 /*********************************************************************
1327 *********************************************************************/
1328
1329 bool pdb_copy_sam_account(struct samu *dst, struct samu *src )
1330 {
1331         uint8 *buf = NULL;
1332         int len;
1333
1334         len = init_buffer_from_sam_v3(&buf, src, False);
1335         if (len == -1 || !buf) {
1336                 SAFE_FREE(buf);
1337                 return False;
1338         }
1339
1340         if (!init_sam_from_buffer_v3( dst, buf, len )) {
1341                 free(buf);
1342                 return False;
1343         }
1344
1345         dst->methods = src->methods;
1346
1347         if ( src->unix_pw ) {
1348                 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
1349                 if (!dst->unix_pw) {
1350                         free(buf);
1351                         return False;
1352                 }
1353         }
1354
1355         free(buf);
1356         return True;
1357 }
1358
1359 /*********************************************************************
1360  Update the bad password count checking the AP_RESET_COUNT_TIME
1361 *********************************************************************/
1362
1363 bool pdb_update_bad_password_count(struct samu *sampass, bool *updated)
1364 {
1365         time_t LastBadPassword;
1366         uint16 BadPasswordCount;
1367         uint32 resettime;
1368         bool res;
1369
1370         BadPasswordCount = pdb_get_bad_password_count(sampass);
1371         if (!BadPasswordCount) {
1372                 DEBUG(9, ("No bad password attempts.\n"));
1373                 return True;
1374         }
1375
1376         become_root();
1377         res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
1378         unbecome_root();
1379
1380         if (!res) {
1381                 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
1382                 return False;
1383         }
1384
1385         /* First, check if there is a reset time to compare */
1386         if ((resettime == (uint32) -1) || (resettime == 0)) {
1387                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
1388                 return True;
1389         }
1390
1391         LastBadPassword = pdb_get_bad_password_time(sampass);
1392         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
1393                    (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
1394         if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
1395                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1396                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1397                 if (updated) {
1398                         *updated = True;
1399                 }
1400         }
1401
1402         return True;
1403 }
1404
1405 /*********************************************************************
1406  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
1407 *********************************************************************/
1408
1409 bool pdb_update_autolock_flag(struct samu *sampass, bool *updated)
1410 {
1411         uint32 duration;
1412         time_t LastBadPassword;
1413         bool res;
1414
1415         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
1416                 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
1417                         pdb_get_username(sampass)));
1418                 return True;
1419         }
1420
1421         become_root();
1422         res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
1423         unbecome_root();
1424
1425         if (!res) {
1426                 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
1427                 return False;
1428         }
1429
1430         /* First, check if there is a duration to compare */
1431         if ((duration == (uint32) -1)  || (duration == 0)) {
1432                 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
1433                 return True;
1434         }
1435
1436         LastBadPassword = pdb_get_bad_password_time(sampass);
1437         DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
1438                   pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
1439
1440         if (LastBadPassword == (time_t)0) {
1441                 DEBUG(1,("pdb_update_autolock_flag: Account %s "
1442                          "administratively locked out with no bad password "
1443                          "time. Leaving locked out.\n",
1444                          pdb_get_username(sampass) ));
1445                 return True;
1446         }
1447
1448         if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
1449                 pdb_set_acct_ctrl(sampass,
1450                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
1451                                   PDB_CHANGED);
1452                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1453                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1454                 if (updated) {
1455                         *updated = True;
1456                 }
1457         }
1458
1459         return True;
1460 }
1461
1462 /*********************************************************************
1463  Increment the bad_password_count
1464 *********************************************************************/
1465
1466 bool pdb_increment_bad_password_count(struct samu *sampass)
1467 {
1468         uint32 account_policy_lockout;
1469         bool autolock_updated = False, badpw_updated = False;
1470         bool ret;
1471
1472         /* Retrieve the account lockout policy */
1473         become_root();
1474         ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
1475         unbecome_root();
1476         if ( !ret ) {
1477                 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
1478                 return False;
1479         }
1480
1481         /* If there is no policy, we don't need to continue checking */
1482         if (!account_policy_lockout) {
1483                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
1484                 return True;
1485         }
1486
1487         /* Check if the autolock needs to be cleared */
1488         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
1489                 return False;
1490
1491         /* Check if the badpw count needs to be reset */
1492         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
1493                 return False;
1494
1495         /*
1496           Ok, now we can assume that any resetting that needs to be
1497           done has been done, and just get on with incrementing
1498           and autolocking if necessary
1499         */
1500
1501         pdb_set_bad_password_count(sampass,
1502                                    pdb_get_bad_password_count(sampass)+1,
1503                                    PDB_CHANGED);
1504         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
1505
1506
1507         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
1508                 return True;
1509
1510         if (!pdb_set_acct_ctrl(sampass,
1511                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
1512                                PDB_CHANGED)) {
1513                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
1514                 return False;
1515         }
1516
1517         return True;
1518 }
1519
1520 bool is_dc_trusted_domain_situation(const char *domain_name)
1521 {
1522         return IS_DC && !strequal(domain_name, lp_workgroup());
1523 }
1524
1525 /*******************************************************************
1526  Wrapper around retrieving the clear text trust account password.
1527  appropriate account name is stored in account_name.
1528  Caller must free password, but not account_name.
1529 *******************************************************************/
1530
1531 bool get_trust_pw_clear(const char *domain, char **ret_pwd,
1532                         const char **account_name, uint32 *channel)
1533 {
1534         char *pwd;
1535         time_t last_set_time;
1536
1537         /* if we are a DC and this is not our domain, then lookup an account
1538          * for the domain trust */
1539
1540         if (is_dc_trusted_domain_situation(domain)) {
1541                 if (!lp_allow_trusted_domains()) {
1542                         return false;
1543                 }
1544
1545                 if (!pdb_get_trusteddom_pw(domain, ret_pwd, NULL,
1546                                            &last_set_time))
1547                 {
1548                         DEBUG(0, ("get_trust_pw: could not fetch trust "
1549                                 "account password for trusted domain %s\n",
1550                                 domain));
1551                         return false;
1552                 }
1553
1554                 if (channel != NULL) {
1555                         *channel = SEC_CHAN_DOMAIN;
1556                 }
1557
1558                 if (account_name != NULL) {
1559                         *account_name = lp_workgroup();
1560                 }
1561
1562                 return true;
1563         }
1564
1565         /*
1566          * Since we can only be member of one single domain, we are now
1567          * in a member situation:
1568          *
1569          *  -  Either we are a DC (selfjoined) and the domain is our
1570          *     own domain.
1571          *  -  Or we are on a member and the domain is our own or some
1572          *     other (potentially trusted) domain.
1573          *
1574          * In both cases, we can only get the machine account password
1575          * for our own domain to connect to our own dc. (For a member,
1576          * request to trusted domains are performed through our dc.)
1577          *
1578          * So we simply use our own domain name to retrieve the
1579          * machine account passowrd and ignore the request domain here.
1580          */
1581
1582         pwd = secrets_fetch_machine_password(lp_workgroup(), &last_set_time, channel);
1583
1584         if (pwd != NULL) {
1585                 *ret_pwd = pwd;
1586                 if (account_name != NULL) {
1587                         *account_name = global_myname();
1588                 }
1589
1590                 return true;
1591         }
1592
1593         DEBUG(5, ("get_trust_pw_clear: could not fetch clear text trust "
1594                   "account password for domain %s\n", domain));
1595         return false;
1596 }
1597
1598 /*******************************************************************
1599  Wrapper around retrieving the trust account password.
1600  appropriate account name is stored in account_name.
1601 *******************************************************************/
1602
1603 bool get_trust_pw_hash(const char *domain, uint8 ret_pwd[16],
1604                        const char **account_name, uint32 *channel)
1605 {
1606         char *pwd = NULL;
1607         time_t last_set_time;
1608
1609         if (get_trust_pw_clear(domain, &pwd, account_name, channel)) {
1610                 E_md4hash(pwd, ret_pwd);
1611                 SAFE_FREE(pwd);
1612                 return true;
1613         } else if (is_dc_trusted_domain_situation(domain)) {
1614                 return false;
1615         }
1616
1617         /* as a fallback, try to get the hashed pwd directly from the tdb... */
1618
1619         if (secrets_fetch_trust_account_password_legacy(domain, ret_pwd,
1620                                                         &last_set_time,
1621                                                         channel))
1622         {
1623                 if (account_name != NULL) {
1624                         *account_name = global_myname();
1625                 }
1626
1627                 return true;
1628         }
1629
1630         DEBUG(5, ("get_trust_pw_hash: could not fetch trust account "
1631                 "password for domain %s\n", domain));
1632         return False;
1633 }
1634
1635 struct samr_LogonHours get_logon_hours_from_pdb(TALLOC_CTX *mem_ctx,
1636                                                 struct samu *pw)
1637 {
1638         struct samr_LogonHours hours;
1639         const int units_per_week = 168;
1640
1641         ZERO_STRUCT(hours);
1642         hours.bits = talloc_array(mem_ctx, uint8_t, units_per_week);
1643         if (!hours.bits) {
1644                 return hours;
1645         }
1646
1647         hours.units_per_week = units_per_week;
1648         memset(hours.bits, 0xFF, units_per_week);
1649
1650         if (pdb_get_hours(pw)) {
1651                 memcpy(hours.bits, pdb_get_hours(pw),
1652                        MIN(pdb_get_hours_len(pw), units_per_week));
1653         }
1654
1655         return hours;
1656 }
1657