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 2 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, write to the Free Software
  23    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  24 */
  25
  26 #include "includes.h"
  27
  28 #undef DBGC_CLASS
  29 #define DBGC_CLASS DBGC_PASSDB
  30
  31 /******************************************************************
  32  get the default domain/netbios name to be used when
  33  testing authentication.  For example, if you connect
  34  to a Windows member server using a bogus domain name, the
  35  Windows box will map the BOGUS\user to DOMAIN\user.  A
  36  standalone box will map to WKS\user.
  37 ******************************************************************/
  38
  39 const char *my_sam_name(void)
  40 {
  41         /* standalone servers can only use the local netbios name */
  42         if ( lp_server_role() == ROLE_STANDALONE )
  43                 return global_myname();
  44
  45         /* Windows domain members default to the DOMAIN
  46            name when not specified */
  47         return lp_workgroup();
  48 }
  49
  50 /**********************************************************************
  51 ***********************************************************************/
  52
  53 static int samu_destroy(struct samu *user)
  54 {
  55         data_blob_clear_free( &user->lm_pw );
  56         data_blob_clear_free( &user->nt_pw );
  57
  58         if ( user->plaintext_pw )
  59                 memset( user->plaintext_pw, 0x0, strlen(user->plaintext_pw) );
  60
  61         return 0;
  62 }
  63
  64 /**********************************************************************
  65  generate a new struct samuser
  66 ***********************************************************************/
  67
  68 struct samu *samu_new( TALLOC_CTX *ctx )
  69 {
  70         struct samu *user;
  71
  72         if ( !(user = TALLOC_ZERO_P( ctx, struct samu )) ) {
  73                 DEBUG(0,("samuser_new: Talloc failed!\n"));
  74                 return NULL;
  75         }
  76
  77         talloc_set_destructor( user, samu_destroy );
  78
  79         /* no initial methods */
  80
  81         user->methods = NULL;
  82
  83         /* Don't change these timestamp settings without a good reason.
  84            They are important for NT member server compatibility. */
  85
  86         user->logon_time            = (time_t)0;
  87         user->pass_last_set_time    = (time_t)0;
  88         user->pass_can_change_time  = (time_t)0;
  89         user->logoff_time           = get_time_t_max();
  90         user->kickoff_time          = get_time_t_max();
  91         user->pass_must_change_time = get_time_t_max();
  92         user->fields_present        = 0x00ffffff;
  93         user->logon_divs = 168;         /* hours per week */
  94         user->hours_len = 21;           /* 21 times 8 bits = 168 */
  95         memset(user->hours, 0xff, user->hours_len); /* available at all hours */
  96         user->bad_password_count = 0;
  97         user->logon_count = 0;
  98         user->unknown_6 = 0x000004ec; /* don't know */
  99
 100         /* Some parts of samba strlen their pdb_get...() returns,
 101            so this keeps the interface unchanged for now. */
 102
 103         user->username = "";
 104         user->domain = "";
 105         user->nt_username = "";
 106         user->full_name = "";
 107         user->home_dir = "";
 108         user->logon_script = "";
 109         user->profile_path = "";
 110         user->acct_desc = "";
 111         user->workstations = "";
 112         user->comment = "";
 113         user->munged_dial = "";
 114
 115         user->plaintext_pw = NULL;
 116
 117         /* Unless we know otherwise have a Account Control Bit
 118            value of 'normal user'.  This helps User Manager, which
 119            asks for a filtered list of users. */
 120
 121         user->acct_ctrl = ACB_NORMAL;
 122
 123
 124         return user;
 125 }
 126
 127 /*********************************************************************
 128  Initialize a struct samu from a struct passwd including the user
 129  and group SIDs.  The *user structure is filled out with the Unix
 130  attributes and a user SID.
 131 *********************************************************************/
 132
 133 static NTSTATUS samu_set_unix_internal(struct samu *user, const struct passwd *pwd, BOOL create)
 134 {
 135         const char *guest_account = lp_guestaccount();
 136         const char *domain = global_myname();
 137         uint32 urid;
 138
 139         if ( !pwd ) {
 140                 return NT_STATUS_NO_SUCH_USER;
 141         }
 142
 143         /* Basic properties based upon the Unix account information */
 144
 145         pdb_set_username(user, pwd->pw_name, PDB_SET);
 146         pdb_set_fullname(user, pwd->pw_gecos, PDB_SET);
 147         pdb_set_domain (user, get_global_sam_name(), PDB_DEFAULT);
 148 #if 0
 149         /* This can lead to a primary group of S-1-22-2-XX which
 150            will be rejected by other parts of the Samba code.
 151            Rely on pdb_get_group_sid() to "Do The Right Thing" (TM)
 152            --jerry */
 153
 154         gid_to_sid(&group_sid, pwd->pw_gid);
 155         pdb_set_group_sid(user, &group_sid, PDB_SET);
 156 #endif
 157
 158         /* save the password structure for later use */
 159
 160         user->unix_pw = tcopy_passwd( user, pwd );
 161
 162         /* Special case for the guest account which must have a RID of 501 */
 163
 164         if ( strequal( pwd->pw_name, guest_account ) ) {
 165                 if ( !pdb_set_user_sid_from_rid(user, DOMAIN_USER_RID_GUEST, PDB_DEFAULT)) {
 166                         return NT_STATUS_NO_SUCH_USER;
 167                 }
 168                 return NT_STATUS_OK;
 169         }
 170
 171         /* Non-guest accounts...Check for a workstation or user account */
 172
 173         if (pwd->pw_name[strlen(pwd->pw_name)-1] == '$') {
 174                 /* workstation */
 175
 176                 if (!pdb_set_acct_ctrl(user, ACB_WSTRUST, PDB_DEFAULT)) {
 177                         DEBUG(1, ("Failed to set 'workstation account' flags for user %s.\n",
 178                                 pwd->pw_name));
 179                         return NT_STATUS_INVALID_COMPUTER_NAME;
 180                 }
 181         }
 182         else {
 183                 /* user */
 184
 185                 if (!pdb_set_acct_ctrl(user, ACB_NORMAL, PDB_DEFAULT)) {
 186                         DEBUG(1, ("Failed to set 'normal account' flags for user %s.\n",
 187                                 pwd->pw_name));
 188                         return NT_STATUS_INVALID_ACCOUNT_NAME;
 189                 }
 190
 191                 /* set some basic attributes */
 192
 193                 pdb_set_profile_path(user, talloc_sub_specified(user,
 194                         lp_logon_path(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 195                         PDB_DEFAULT);
 196                 pdb_set_homedir(user, talloc_sub_specified(user,
 197                         lp_logon_home(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 198                         PDB_DEFAULT);
 199                 pdb_set_dir_drive(user, talloc_sub_specified(user,
 200                         lp_logon_drive(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 201                         PDB_DEFAULT);
 202                 pdb_set_logon_script(user, talloc_sub_specified(user,
 203                         lp_logon_script(), pwd->pw_name, domain, pwd->pw_uid, pwd->pw_gid),
 204                         PDB_DEFAULT);
 205         }
 206
 207         /* Now deal with the user SID.  If we have a backend that can generate
 208            RIDs, then do so.  But sometimes the caller just wanted a structure
 209            initialized and will fill in these fields later (such as from a
 210            NET_USER_INFO_3 structure) */
 211
 212         if ( create && !pdb_rid_algorithm() ) {
 213                 uint32 user_rid;
 214                 DOM_SID user_sid;
 215
 216                 if ( !pdb_new_rid( &user_rid ) ) {
 217                         DEBUG(3, ("Could not allocate a new RID\n"));
 218                         return NT_STATUS_ACCESS_DENIED;
 219                 }
 220
 221                 sid_copy( &user_sid, get_global_sam_sid() );
 222                 sid_append_rid( &user_sid, user_rid );
 223
 224                 if ( !pdb_set_user_sid(user, &user_sid, PDB_SET) ) {
 225                         DEBUG(3, ("pdb_set_user_sid failed\n"));
 226                         return NT_STATUS_INTERNAL_ERROR;
 227                 }
 228
 229                 return NT_STATUS_OK;
 230         }
 231
 232         /* generate a SID for the user with the RID algorithm */
 233
 234         urid = algorithmic_pdb_uid_to_user_rid( user->unix_pw->pw_uid );
 235
 236         if ( !pdb_set_user_sid_from_rid( user, urid, PDB_SET) ) {
 237                 return NT_STATUS_INTERNAL_ERROR;
 238         }
 239
 240         return NT_STATUS_OK;
 241 }
 242
 243 /********************************************************************
 244  Set the Unix user attributes
 245 ********************************************************************/
 246
 247 NTSTATUS samu_set_unix(struct samu *user, const struct passwd *pwd)
 248 {
 249         return samu_set_unix_internal( user, pwd, False );
 250 }
 251
 252 NTSTATUS samu_alloc_rid_unix(struct samu *user, const struct passwd *pwd)
 253 {
 254         return samu_set_unix_internal( user, pwd, True );
 255 }
 256
 257 /**********************************************************
 258  Encode the account control bits into a string.
 259  length = length of string to encode into (including terminating
 260  null). length *MUST BE MORE THAN 2* !
 261  **********************************************************/
 262
 263 char *pdb_encode_acct_ctrl(uint32 acct_ctrl, size_t length)
 264 {
 265         static fstring acct_str;
 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         return acct_str;
 293 }
 294
 295 /**********************************************************
 296  Decode the account control bits from a string.
 297  **********************************************************/
 298
 299 uint32 pdb_decode_acct_ctrl(const char *p)
 300 {
 301         uint32 acct_ctrl = 0;
 302         BOOL finished = False;
 303
 304         /*
 305          * Check if the account type bits have been encoded after the
 306          * NT password (in the form [NDHTUWSLXI]).
 307          */
 308
 309         if (*p != '[')
 310                 return 0;
 311
 312         for (p++; *p && !finished; p++) {
 313                 switch (*p) {
 314                         case 'N': { acct_ctrl |= ACB_PWNOTREQ ; break; /* 'N'o password. */ }
 315                         case 'D': { acct_ctrl |= ACB_DISABLED ; break; /* 'D'isabled. */ }
 316                         case 'H': { acct_ctrl |= ACB_HOMDIRREQ; break; /* 'H'omedir required. */ }
 317                         case 'T': { acct_ctrl |= ACB_TEMPDUP  ; break; /* 'T'emp account. */ }
 318                         case 'U': { acct_ctrl |= ACB_NORMAL   ; break; /* 'U'ser account (normal). */ }
 319                         case 'M': { acct_ctrl |= ACB_MNS      ; break; /* 'M'NS logon user account. What is this ? */ }
 320                         case 'W': { acct_ctrl |= ACB_WSTRUST  ; break; /* 'W'orkstation account. */ }
 321                         case 'S': { acct_ctrl |= ACB_SVRTRUST ; break; /* 'S'erver account. */ }
 322                         case 'L': { acct_ctrl |= ACB_AUTOLOCK ; break; /* 'L'ocked account. */ }
 323                         case 'X': { acct_ctrl |= ACB_PWNOEXP  ; break; /* No 'X'piry on password */ }
 324                         case 'I': { acct_ctrl |= ACB_DOMTRUST ; break; /* 'I'nterdomain trust account. */ }
 325             case ' ': { break; }
 326                         case ':':
 327                         case '\n':
 328                         case '\0':
 329                         case ']':
 330                         default:  { finished = True; }
 331                 }
 332         }
 333
 334         return acct_ctrl;
 335 }
 336
 337 /*************************************************************
 338  Routine to set 32 hex password characters from a 16 byte array.
 339 **************************************************************/
 340
 341 void pdb_sethexpwd(char *p, const unsigned char *pwd, uint32 acct_ctrl)
 342 {
 343         if (pwd != NULL) {
 344                 int i;
 345                 for (i = 0; i < 16; i++)
 346                         slprintf(&p[i*2], 3, "%02X", pwd[i]);
 347         } else {
 348                 if (acct_ctrl & ACB_PWNOTREQ)
 349                         safe_strcpy(p, "NO PASSWORDXXXXXXXXXXXXXXXXXXXXX", 32);
 350                 else
 351                         safe_strcpy(p, "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX", 32);
 352         }
 353 }
 354
 355 /*************************************************************
 356  Routine to get the 32 hex characters and turn them
 357  into a 16 byte array.
 358 **************************************************************/
 359
 360 BOOL pdb_gethexpwd(const char *p, unsigned char *pwd)
 361 {
 362         int i;
 363         unsigned char   lonybble, hinybble;
 364         const char      *hexchars = "0123456789ABCDEF";
 365         char           *p1, *p2;
 366
 367         if (!p)
 368                 return (False);
 369
 370         for (i = 0; i < 32; i += 2) {
 371                 hinybble = toupper_ascii(p[i]);
 372                 lonybble = toupper_ascii(p[i + 1]);
 373
 374                 p1 = strchr(hexchars, hinybble);
 375                 p2 = strchr(hexchars, lonybble);
 376
 377                 if (!p1 || !p2)
 378                         return (False);
 379
 380                 hinybble = PTR_DIFF(p1, hexchars);
 381                 lonybble = PTR_DIFF(p2, hexchars);
 382
 383                 pwd[i / 2] = (hinybble << 4) | lonybble;
 384         }
 385         return (True);
 386 }
 387
 388 /*************************************************************
 389  Routine to set 42 hex hours characters from a 21 byte array.
 390 **************************************************************/
 391
 392 void pdb_sethexhours(char *p, const unsigned char *hours)
 393 {
 394         if (hours != NULL) {
 395                 int i;
 396                 for (i = 0; i < 21; i++) {
 397                         slprintf(&p[i*2], 3, "%02X", hours[i]);
 398                 }
 399         } else {
 400                 safe_strcpy(p, "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF", 43);
 401         }
 402 }
 403
 404 /*************************************************************
 405  Routine to get the 42 hex characters and turn them
 406  into a 21 byte array.
 407 **************************************************************/
 408
 409 BOOL pdb_gethexhours(const char *p, unsigned char *hours)
 410 {
 411         int i;
 412         unsigned char   lonybble, hinybble;
 413         const char      *hexchars = "0123456789ABCDEF";
 414         char           *p1, *p2;
 415
 416         if (!p) {
 417                 return (False);
 418         }
 419
 420         for (i = 0; i < 42; i += 2) {
 421                 hinybble = toupper_ascii(p[i]);
 422                 lonybble = toupper_ascii(p[i + 1]);
 423
 424                 p1 = strchr(hexchars, hinybble);
 425                 p2 = strchr(hexchars, lonybble);
 426
 427                 if (!p1 || !p2) {
 428                         return (False);
 429                 }
 430
 431                 hinybble = PTR_DIFF(p1, hexchars);
 432                 lonybble = PTR_DIFF(p2, hexchars);
 433
 434                 hours[i / 2] = (hinybble << 4) | lonybble;
 435         }
 436         return (True);
 437 }
 438
 439 /********************************************************************
 440 ********************************************************************/
 441
 442 int algorithmic_rid_base(void)
 443 {
 444         static int rid_offset = 0;
 445
 446         if (rid_offset != 0)
 447                 return rid_offset;
 448
 449         rid_offset = lp_algorithmic_rid_base();
 450
 451         if (rid_offset < BASE_RID) {
 452                 /* Try to prevent admin foot-shooting, we can't put algorithmic
 453                    rids below 1000, that's the 'well known RIDs' on NT */
 454                 DEBUG(0, ("'algorithmic rid base' must be equal to or above %ld\n", BASE_RID));
 455                 rid_offset = BASE_RID;
 456         }
 457         if (rid_offset & 1) {
 458                 DEBUG(0, ("algorithmic rid base must be even\n"));
 459                 rid_offset += 1;
 460         }
 461         return rid_offset;
 462 }
 463
 464 /*******************************************************************
 465  Converts NT user RID to a UNIX uid.
 466  ********************************************************************/
 467
 468 uid_t algorithmic_pdb_user_rid_to_uid(uint32 user_rid)
 469 {
 470         int rid_offset = algorithmic_rid_base();
 471         return (uid_t)(((user_rid & (~USER_RID_TYPE)) - rid_offset)/RID_MULTIPLIER);
 472 }
 473
 474 uid_t max_algorithmic_uid(void)
 475 {
 476         return algorithmic_pdb_user_rid_to_uid(0xfffffffe);
 477 }
 478
 479 /*******************************************************************
 480  converts UNIX uid to an NT User RID.
 481  ********************************************************************/
 482
 483 uint32 algorithmic_pdb_uid_to_user_rid(uid_t uid)
 484 {
 485         int rid_offset = algorithmic_rid_base();
 486         return (((((uint32)uid)*RID_MULTIPLIER) + rid_offset) | USER_RID_TYPE);
 487 }
 488
 489 /*******************************************************************
 490  Converts NT group RID to a UNIX gid.
 491  ********************************************************************/
 492
 493 gid_t pdb_group_rid_to_gid(uint32 group_rid)
 494 {
 495         int rid_offset = algorithmic_rid_base();
 496         return (gid_t)(((group_rid & (~GROUP_RID_TYPE))- rid_offset)/RID_MULTIPLIER);
 497 }
 498
 499 gid_t max_algorithmic_gid(void)
 500 {
 501         return pdb_group_rid_to_gid(0xffffffff);
 502 }
 503
 504 /*******************************************************************
 505  converts NT Group RID to a UNIX uid.
 506
 507  warning: you must not call that function only
 508  you must do a call to the group mapping first.
 509  there is not anymore a direct link between the gid and the rid.
 510  ********************************************************************/
 511
 512 uint32 algorithmic_pdb_gid_to_group_rid(gid_t gid)
 513 {
 514         int rid_offset = algorithmic_rid_base();
 515         return (((((uint32)gid)*RID_MULTIPLIER) + rid_offset) | GROUP_RID_TYPE);
 516 }
 517
 518 /*******************************************************************
 519  Decides if a RID is a well known RID.
 520  ********************************************************************/
 521
 522 static BOOL rid_is_well_known(uint32 rid)
 523 {
 524         /* Not using rid_offset here, because this is the actual
 525            NT fixed value (1000) */
 526
 527         return (rid < BASE_RID);
 528 }
 529
 530 /*******************************************************************
 531  Decides if a RID is a user or group RID.
 532  ********************************************************************/
 533
 534 BOOL algorithmic_pdb_rid_is_user(uint32 rid)
 535 {
 536         if ( rid_is_well_known(rid) ) {
 537                 /*
 538                  * The only well known user RIDs are DOMAIN_USER_RID_ADMIN
 539                  * and DOMAIN_USER_RID_GUEST.
 540                  */
 541                 if(rid == DOMAIN_USER_RID_ADMIN || rid == DOMAIN_USER_RID_GUEST)
 542                         return True;
 543         } else if((rid & RID_TYPE_MASK) == USER_RID_TYPE) {
 544                 return True;
 545         }
 546         return False;
 547 }
 548
 549 /*******************************************************************
 550  Convert a name into a SID. Used in the lookup name rpc.
 551  ********************************************************************/
 552
 553 BOOL lookup_global_sam_name(const char *name, int flags, uint32_t *rid,
 554                             enum lsa_SidType *type)
 555 {
 556         GROUP_MAP map;
 557         BOOL ret;
 558
 559         /* Windows treats "MACHINE\None" as a special name for
 560            rid 513 on non-DCs.  You cannot create a user or group
 561            name "None" on Windows.  You will get an error that
 562            the group already exists. */
 563
 564         if ( strequal( name, "None" ) ) {
 565                 *rid = DOMAIN_GROUP_RID_USERS;
 566                 *type = SID_NAME_DOM_GRP;
 567
 568                 return True;
 569         }
 570
 571         /* LOOKUP_NAME_GROUP is a hack to allow valid users = @foo to work
 572          * correctly in the case where foo also exists as a user. If the flag
 573          * is set, don't look for users at all. */
 574
 575         if ((flags & LOOKUP_NAME_GROUP) == 0) {
 576                 struct samu *sam_account = NULL;
 577                 DOM_SID user_sid;
 578
 579                 if ( !(sam_account = samu_new( NULL )) ) {
 580                         return False;
 581                 }
 582
 583                 become_root();
 584                 ret =  pdb_getsampwnam(sam_account, name);
 585                 unbecome_root();
 586
 587                 if (ret) {
 588                         sid_copy(&user_sid, pdb_get_user_sid(sam_account));
 589                 }
 590
 591                 TALLOC_FREE(sam_account);
 592
 593                 if (ret) {
 594                         if (!sid_check_is_in_our_domain(&user_sid)) {
 595                                 DEBUG(0, ("User %s with invalid SID %s in passdb\n",
 596                                           name, sid_string_static(&user_sid)));
 597                                 return False;
 598                         }
 599
 600                         sid_peek_rid(&user_sid, rid);
 601                         *type = SID_NAME_USER;
 602                         return True;
 603                 }
 604         }
 605
 606         /*
 607          * Maybe it is a group ?
 608          */
 609
 610         become_root();
 611         ret = pdb_getgrnam(&map, name);
 612         unbecome_root();
 613
 614         if (!ret) {
 615                 /* try to see if we can lookup a mapped
 616                  * group with the unix group name */
 617
 618                 struct group *grp;
 619
 620                 grp = getgrnam(name);
 621                 if (!grp) {
 622                         return False;
 623                 }
 624
 625                 become_root();
 626                 ret = pdb_getgrgid(&map, grp->gr_gid);
 627                 unbecome_root();
 628
 629                 if (!ret) {
 630                         return False;
 631                 }
 632         }
 633
 634         /* BUILTIN groups are looked up elsewhere */
 635         if (!sid_check_is_in_our_domain(&map.sid)) {
 636                 DEBUG(10, ("Found group %s (%s) not in our domain -- "
 637                            "ignoring.", name,
 638                            sid_string_static(&map.sid)));
 639                 return False;
 640         }
 641
 642         /* yes it's a mapped group */
 643         sid_peek_rid(&map.sid, rid);
 644         *type = map.sid_name_use;
 645         return True;
 646 }
 647
 648 /*************************************************************
 649  Change a password entry in the local smbpasswd file.
 650  *************************************************************/
 651
 652 NTSTATUS local_password_change(const char *user_name, int local_flags,
 653                            const char *new_passwd,
 654                            char *err_str, size_t err_str_len,
 655                            char *msg_str, size_t msg_str_len)
 656 {
 657         struct samu *sam_pass=NULL;
 658         uint32 other_acb;
 659         NTSTATUS result;
 660
 661         *err_str = '\0';
 662         *msg_str = '\0';
 663
 664         /* Get the smb passwd entry for this user */
 665
 666         if ( !(sam_pass = samu_new( NULL )) ) {
 667                 return NT_STATUS_NO_MEMORY;
 668         }
 669
 670         become_root();
 671         if(!pdb_getsampwnam(sam_pass, user_name)) {
 672                 unbecome_root();
 673                 TALLOC_FREE(sam_pass);
 674
 675                 if ((local_flags & LOCAL_ADD_USER) || (local_flags & LOCAL_DELETE_USER)) {
 676                         int tmp_debug = DEBUGLEVEL;
 677                         struct passwd *pwd;
 678
 679                         /* Might not exist in /etc/passwd. */
 680
 681                         if (tmp_debug < 1) {
 682                                 DEBUGLEVEL = 1;
 683                         }
 684
 685                         if ( !(pwd = getpwnam_alloc( NULL, user_name)) ) {
 686                                 return NT_STATUS_NO_SUCH_USER;
 687                         }
 688
 689                         /* create the struct samu and initialize the basic Unix properties */
 690
 691                         if ( !(sam_pass = samu_new( NULL )) ) {
 692                                 return NT_STATUS_NO_MEMORY;
 693                         }
 694
 695                         result = samu_set_unix( sam_pass, pwd );
 696
 697                         DEBUGLEVEL = tmp_debug;
 698
 699                         TALLOC_FREE( pwd );
 700
 701                         if (NT_STATUS_EQUAL(result, NT_STATUS_INVALID_PRIMARY_GROUP)) {
 702                                 return result;
 703                         }
 704
 705                         if (!NT_STATUS_IS_OK(result)) {
 706                                 slprintf(err_str, err_str_len-1, "Failed to " "initialize account for user %s: %s\n",
 707                                         user_name, nt_errstr(result));
 708                                 return result;
 709                         }
 710                 } else {
 711                         slprintf(err_str, err_str_len-1,"Failed to find entry for user %s.\n", user_name);
 712                         return NT_STATUS_NO_SUCH_USER;
 713                 }
 714         } else {
 715                 unbecome_root();
 716                 /* the entry already existed */
 717                 local_flags &= ~LOCAL_ADD_USER;
 718         }
 719
 720         /* the 'other' acb bits not being changed here */
 721         other_acb =  (pdb_get_acct_ctrl(sam_pass) & (~(ACB_WSTRUST|ACB_DOMTRUST|ACB_SVRTRUST|ACB_NORMAL)));
 722         if (local_flags & LOCAL_TRUST_ACCOUNT) {
 723                 if (!pdb_set_acct_ctrl(sam_pass, ACB_WSTRUST | other_acb, PDB_CHANGED) ) {
 724                         slprintf(err_str, err_str_len - 1, "Failed to set 'trusted workstation account' flags for user %s.\n", user_name);
 725                         TALLOC_FREE(sam_pass);
 726                         return NT_STATUS_UNSUCCESSFUL;
 727                 }
 728         } else if (local_flags & LOCAL_INTERDOM_ACCOUNT) {
 729                 if (!pdb_set_acct_ctrl(sam_pass, ACB_DOMTRUST | other_acb, PDB_CHANGED)) {
 730                         slprintf(err_str, err_str_len - 1, "Failed to set 'domain trust account' flags for user %s.\n", user_name);
 731                         TALLOC_FREE(sam_pass);
 732                         return NT_STATUS_UNSUCCESSFUL;
 733                 }
 734         } else {
 735                 if (!pdb_set_acct_ctrl(sam_pass, ACB_NORMAL | other_acb, PDB_CHANGED)) {
 736                         slprintf(err_str, err_str_len - 1, "Failed to set 'normal account' flags for user %s.\n", user_name);
 737                         TALLOC_FREE(sam_pass);
 738                         return NT_STATUS_UNSUCCESSFUL;
 739                 }
 740         }
 741
 742         /*
 743          * We are root - just write the new password
 744          * and the valid last change time.
 745          */
 746
 747         if (local_flags & LOCAL_DISABLE_USER) {
 748                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_DISABLED, PDB_CHANGED)) {
 749                         slprintf(err_str, err_str_len-1, "Failed to set 'disabled' flag for user %s.\n", user_name);
 750                         TALLOC_FREE(sam_pass);
 751                         return NT_STATUS_UNSUCCESSFUL;
 752                 }
 753         } else if (local_flags & LOCAL_ENABLE_USER) {
 754                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 755                         slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 756                         TALLOC_FREE(sam_pass);
 757                         return NT_STATUS_UNSUCCESSFUL;
 758                 }
 759         }
 760
 761         if (local_flags & LOCAL_SET_NO_PASSWORD) {
 762                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)|ACB_PWNOTREQ, PDB_CHANGED)) {
 763                         slprintf(err_str, err_str_len-1, "Failed to set 'no password required' flag for user %s.\n", user_name);
 764                         TALLOC_FREE(sam_pass);
 765                         return NT_STATUS_UNSUCCESSFUL;
 766                 }
 767         } else if (local_flags & LOCAL_SET_PASSWORD) {
 768                 /*
 769                  * If we're dealing with setting a completely empty user account
 770                  * ie. One with a password of 'XXXX', but not set disabled (like
 771                  * an account created from scratch) then if the old password was
 772                  * 'XX's then getsmbpwent will have set the ACB_DISABLED flag.
 773                  * We remove that as we're giving this user their first password
 774                  * and the decision hasn't really been made to disable them (ie.
 775                  * don't create them disabled). JRA.
 776                  */
 777                 if ((pdb_get_lanman_passwd(sam_pass)==NULL) && (pdb_get_acct_ctrl(sam_pass)&ACB_DISABLED)) {
 778                         if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_DISABLED), PDB_CHANGED)) {
 779                                 slprintf(err_str, err_str_len-1, "Failed to unset 'disabled' flag for user %s.\n", user_name);
 780                                 TALLOC_FREE(sam_pass);
 781                                 return NT_STATUS_UNSUCCESSFUL;
 782                         }
 783                 }
 784                 if (!pdb_set_acct_ctrl (sam_pass, pdb_get_acct_ctrl(sam_pass)&(~ACB_PWNOTREQ), PDB_CHANGED)) {
 785                         slprintf(err_str, err_str_len-1, "Failed to unset 'no password required' flag for user %s.\n", user_name);
 786                         TALLOC_FREE(sam_pass);
 787                         return NT_STATUS_UNSUCCESSFUL;
 788                 }
 789
 790                 if (!pdb_set_plaintext_passwd (sam_pass, new_passwd)) {
 791                         slprintf(err_str, err_str_len-1, "Failed to set password for user %s.\n", user_name);
 792                         TALLOC_FREE(sam_pass);
 793                         return NT_STATUS_UNSUCCESSFUL;
 794                 }
 795         }
 796
 797         if (local_flags & LOCAL_ADD_USER) {
 798                 if (NT_STATUS_IS_OK(pdb_add_sam_account(sam_pass))) {
 799                         slprintf(msg_str, msg_str_len-1, "Added user %s.\n", user_name);
 800                         TALLOC_FREE(sam_pass);
 801                         return NT_STATUS_OK;
 802                 } else {
 803                         slprintf(err_str, err_str_len-1, "Failed to add entry for user %s.\n", user_name);
 804                         TALLOC_FREE(sam_pass);
 805                         return NT_STATUS_UNSUCCESSFUL;
 806                 }
 807         } else if (local_flags & LOCAL_DELETE_USER) {
 808                 if (!NT_STATUS_IS_OK(pdb_delete_sam_account(sam_pass))) {
 809                         slprintf(err_str,err_str_len-1, "Failed to delete entry for user %s.\n", user_name);
 810                         TALLOC_FREE(sam_pass);
 811                         return NT_STATUS_UNSUCCESSFUL;
 812                 }
 813                 slprintf(msg_str, msg_str_len-1, "Deleted user %s.\n", user_name);
 814         } else {
 815                 result = pdb_update_sam_account(sam_pass);
 816                 if(!NT_STATUS_IS_OK(result)) {
 817                         slprintf(err_str, err_str_len-1, "Failed to modify entry for user %s.\n", user_name);
 818                         TALLOC_FREE(sam_pass);
 819                         return result;
 820                 }
 821                 if(local_flags & LOCAL_DISABLE_USER)
 822                         slprintf(msg_str, msg_str_len-1, "Disabled user %s.\n", user_name);
 823                 else if (local_flags & LOCAL_ENABLE_USER)
 824                         slprintf(msg_str, msg_str_len-1, "Enabled user %s.\n", user_name);
 825                 else if (local_flags & LOCAL_SET_NO_PASSWORD)
 826                         slprintf(msg_str, msg_str_len-1, "User %s password set to none.\n", user_name);
 827         }
 828
 829         TALLOC_FREE(sam_pass);
 830         return NT_STATUS_OK;
 831 }
 832
 833 /**********************************************************************
 834  Marshall/unmarshall struct samu structs.
 835  *********************************************************************/
 836
 837 #define TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd"
 838
 839 /*********************************************************************
 840 *********************************************************************/
 841
 842 BOOL init_sam_from_buffer_v3(struct samu *sampass, uint8 *buf, uint32 buflen)
 843 {
 844
 845         /* times are stored as 32bit integer
 846            take care on system with 64bit wide time_t
 847            --SSS */
 848         uint32  logon_time,
 849                 logoff_time,
 850                 kickoff_time,
 851                 bad_password_time,
 852                 pass_last_set_time,
 853                 pass_can_change_time,
 854                 pass_must_change_time;
 855         char *username = NULL;
 856         char *domain = NULL;
 857         char *nt_username = NULL;
 858         char *dir_drive = NULL;
 859         char *unknown_str = NULL;
 860         char *munged_dial = NULL;
 861         char *fullname = NULL;
 862         char *homedir = NULL;
 863         char *logon_script = NULL;
 864         char *profile_path = NULL;
 865         char *acct_desc = NULL;
 866         char *workstations = NULL;
 867         uint32  username_len, domain_len, nt_username_len,
 868                 dir_drive_len, unknown_str_len, munged_dial_len,
 869                 fullname_len, homedir_len, logon_script_len,
 870                 profile_path_len, acct_desc_len, workstations_len;
 871
 872         uint32  user_rid, group_rid, hours_len, unknown_6, acct_ctrl;
 873         uint16  logon_divs;
 874         uint16  bad_password_count, logon_count;
 875         uint8   *hours = NULL;
 876         uint8   *lm_pw_ptr = NULL, *nt_pw_ptr = NULL, *nt_pw_hist_ptr = NULL;
 877         uint32          len = 0;
 878         uint32          lm_pw_len, nt_pw_len, nt_pw_hist_len, hourslen;
 879         uint32 pwHistLen = 0;
 880         BOOL ret = True;
 881         fstring tmpstring;
 882         BOOL expand_explicit = lp_passdb_expand_explicit();
 883
 884         if(sampass == NULL || buf == NULL) {
 885                 DEBUG(0, ("init_sam_from_buffer_v3: NULL parameters found!\n"));
 886                 return False;
 887         }
 888
 889 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
 890
 891         /* unpack the buffer into variables */
 892         len = tdb_unpack (buf, buflen, TDB_FORMAT_STRING_V3,
 893                 &logon_time,                                            /* d */
 894                 &logoff_time,                                           /* d */
 895                 &kickoff_time,                                          /* d */
 896                 &bad_password_time,                                     /* d */
 897                 &pass_last_set_time,                                    /* d */
 898                 &pass_can_change_time,                                  /* d */
 899                 &pass_must_change_time,                                 /* d */
 900                 &username_len, &username,                               /* B */
 901                 &domain_len, &domain,                                   /* B */
 902                 &nt_username_len, &nt_username,                         /* B */
 903                 &fullname_len, &fullname,                               /* B */
 904                 &homedir_len, &homedir,                                 /* B */
 905                 &dir_drive_len, &dir_drive,                             /* B */
 906                 &logon_script_len, &logon_script,                       /* B */
 907                 &profile_path_len, &profile_path,                       /* B */
 908                 &acct_desc_len, &acct_desc,                             /* B */
 909                 &workstations_len, &workstations,                       /* B */
 910                 &unknown_str_len, &unknown_str,                         /* B */
 911                 &munged_dial_len, &munged_dial,                         /* B */
 912                 &user_rid,                                              /* d */
 913                 &group_rid,                                             /* d */
 914                 &lm_pw_len, &lm_pw_ptr,                                 /* B */
 915                 &nt_pw_len, &nt_pw_ptr,                                 /* B */
 916                 /* Change from V1 is addition of password history field. */
 917                 &nt_pw_hist_len, &nt_pw_hist_ptr,                       /* B */
 918                 /* Change from V2 is the uint32 acb_mask */
 919                 &acct_ctrl,                                             /* d */
 920                 /* Also "remove_me" field was removed. */
 921                 &logon_divs,                                            /* w */
 922                 &hours_len,                                             /* d */
 923                 &hourslen, &hours,                                      /* B */
 924                 &bad_password_count,                                    /* w */
 925                 &logon_count,                                           /* w */
 926                 &unknown_6);                                            /* d */
 927
 928         if (len == (uint32) -1)  {
 929                 ret = False;
 930                 goto done;
 931         }
 932
 933         pdb_set_logon_time(sampass, convert_uint32_to_time_t(logon_time), PDB_SET);
 934         pdb_set_logoff_time(sampass, convert_uint32_to_time_t(logoff_time), PDB_SET);
 935         pdb_set_kickoff_time(sampass, convert_uint32_to_time_t(kickoff_time), PDB_SET);
 936         pdb_set_bad_password_time(sampass, convert_uint32_to_time_t(bad_password_time), PDB_SET);
 937         pdb_set_pass_can_change_time(sampass, convert_uint32_to_time_t(pass_can_change_time), PDB_SET);
 938         pdb_set_pass_must_change_time(sampass, convert_uint32_to_time_t(pass_must_change_time), PDB_SET);
 939         pdb_set_pass_last_set_time(sampass, convert_uint32_to_time_t(pass_last_set_time), PDB_SET);
 940
 941         pdb_set_username(sampass, username, PDB_SET);
 942         pdb_set_domain(sampass, domain, PDB_SET);
 943         pdb_set_nt_username(sampass, nt_username, PDB_SET);
 944         pdb_set_fullname(sampass, fullname, PDB_SET);
 945
 946         if (homedir) {
 947                 fstrcpy( tmpstring, homedir );
 948                 if (expand_explicit) {
 949                         standard_sub_basic( username, domain, tmpstring,
 950                                             sizeof(tmpstring) );
 951                 }
 952                 pdb_set_homedir(sampass, tmpstring, PDB_SET);
 953         }
 954         else {
 955                 pdb_set_homedir(sampass,
 956                         talloc_sub_basic(sampass, username, domain,
 957                                          lp_logon_home()),
 958                         PDB_DEFAULT);
 959         }
 960
 961         if (dir_drive)
 962                 pdb_set_dir_drive(sampass, dir_drive, PDB_SET);
 963         else
 964                 pdb_set_dir_drive(sampass, lp_logon_drive(), PDB_DEFAULT );
 965
 966         if (logon_script) {
 967                 fstrcpy( tmpstring, logon_script );
 968                 if (expand_explicit) {
 969                         standard_sub_basic( username, domain, tmpstring,
 970                                             sizeof(tmpstring) );
 971                 }
 972                 pdb_set_logon_script(sampass, tmpstring, PDB_SET);
 973         }
 974         else {
 975                 pdb_set_logon_script(sampass,
 976                         talloc_sub_basic(sampass, username, domain,
 977                                          lp_logon_script()),
 978                         PDB_DEFAULT);
 979         }
 980
 981         if (profile_path) {
 982                 fstrcpy( tmpstring, profile_path );
 983                 if (expand_explicit) {
 984                         standard_sub_basic( username, domain, tmpstring,
 985                                             sizeof(tmpstring) );
 986                 }
 987                 pdb_set_profile_path(sampass, tmpstring, PDB_SET);
 988         }
 989         else {
 990                 pdb_set_profile_path(sampass,
 991                         talloc_sub_basic(sampass, username, domain, lp_logon_path()),
 992                         PDB_DEFAULT);
 993         }
 994
 995         pdb_set_acct_desc(sampass, acct_desc, PDB_SET);
 996         pdb_set_workstations(sampass, workstations, PDB_SET);
 997         pdb_set_munged_dial(sampass, munged_dial, PDB_SET);
 998
 999         if (lm_pw_ptr && lm_pw_len == LM_HASH_LEN) {
1000                 if (!pdb_set_lanman_passwd(sampass, lm_pw_ptr, PDB_SET)) {
1001                         ret = False;
1002                         goto done;
1003                 }
1004         }
1005
1006         if (nt_pw_ptr && nt_pw_len == NT_HASH_LEN) {
1007                 if (!pdb_set_nt_passwd(sampass, nt_pw_ptr, PDB_SET)) {
1008                         ret = False;
1009                         goto done;
1010                 }
1011         }
1012
1013         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1014         if (pwHistLen) {
1015                 uint8 *pw_hist = (uint8 *)SMB_MALLOC(pwHistLen * PW_HISTORY_ENTRY_LEN);
1016                 if (!pw_hist) {
1017                         ret = False;
1018                         goto done;
1019                 }
1020                 memset(pw_hist, '\0', pwHistLen * PW_HISTORY_ENTRY_LEN);
1021                 if (nt_pw_hist_ptr && nt_pw_hist_len) {
1022                         int i;
1023                         SMB_ASSERT((nt_pw_hist_len % PW_HISTORY_ENTRY_LEN) == 0);
1024                         nt_pw_hist_len /= PW_HISTORY_ENTRY_LEN;
1025                         for (i = 0; (i < pwHistLen) && (i < nt_pw_hist_len); i++) {
1026                                 memcpy(&pw_hist[i*PW_HISTORY_ENTRY_LEN],
1027                                         &nt_pw_hist_ptr[i*PW_HISTORY_ENTRY_LEN],
1028                                         PW_HISTORY_ENTRY_LEN);
1029                         }
1030                 }
1031                 if (!pdb_set_pw_history(sampass, pw_hist, pwHistLen, PDB_SET)) {
1032                         SAFE_FREE(pw_hist);
1033                         ret = False;
1034                         goto done;
1035                 }
1036                 SAFE_FREE(pw_hist);
1037         } else {
1038                 pdb_set_pw_history(sampass, NULL, 0, PDB_SET);
1039         }
1040
1041         pdb_set_user_sid_from_rid(sampass, user_rid, PDB_SET);
1042         pdb_set_hours_len(sampass, hours_len, PDB_SET);
1043         pdb_set_bad_password_count(sampass, bad_password_count, PDB_SET);
1044         pdb_set_logon_count(sampass, logon_count, PDB_SET);
1045         pdb_set_unknown_6(sampass, unknown_6, PDB_SET);
1046         /* Change from V2 is the uint32 acct_ctrl */
1047         pdb_set_acct_ctrl(sampass, acct_ctrl, PDB_SET);
1048         pdb_set_logon_divs(sampass, logon_divs, PDB_SET);
1049         pdb_set_hours(sampass, hours, PDB_SET);
1050
1051 done:
1052
1053         SAFE_FREE(username);
1054         SAFE_FREE(domain);
1055         SAFE_FREE(nt_username);
1056         SAFE_FREE(fullname);
1057         SAFE_FREE(homedir);
1058         SAFE_FREE(dir_drive);
1059         SAFE_FREE(logon_script);
1060         SAFE_FREE(profile_path);
1061         SAFE_FREE(acct_desc);
1062         SAFE_FREE(workstations);
1063         SAFE_FREE(munged_dial);
1064         SAFE_FREE(unknown_str);
1065         SAFE_FREE(lm_pw_ptr);
1066         SAFE_FREE(nt_pw_ptr);
1067         SAFE_FREE(nt_pw_hist_ptr);
1068         SAFE_FREE(hours);
1069
1070         return ret;
1071 }
1072
1073 /*********************************************************************
1074 *********************************************************************/
1075
1076 uint32 init_buffer_from_sam_v3 (uint8 **buf, struct samu *sampass, BOOL size_only)
1077 {
1078         size_t len, buflen;
1079
1080         /* times are stored as 32bit integer
1081            take care on system with 64bit wide time_t
1082            --SSS */
1083         uint32  logon_time,
1084                 logoff_time,
1085                 kickoff_time,
1086                 bad_password_time,
1087                 pass_last_set_time,
1088                 pass_can_change_time,
1089                 pass_must_change_time;
1090
1091         uint32  user_rid, group_rid;
1092
1093         const char *username;
1094         const char *domain;
1095         const char *nt_username;
1096         const char *dir_drive;
1097         const char *unknown_str;
1098         const char *munged_dial;
1099         const char *fullname;
1100         const char *homedir;
1101         const char *logon_script;
1102         const char *profile_path;
1103         const char *acct_desc;
1104         const char *workstations;
1105         uint32  username_len, domain_len, nt_username_len,
1106                 dir_drive_len, unknown_str_len, munged_dial_len,
1107                 fullname_len, homedir_len, logon_script_len,
1108                 profile_path_len, acct_desc_len, workstations_len;
1109
1110         const uint8 *lm_pw;
1111         const uint8 *nt_pw;
1112         const uint8 *nt_pw_hist;
1113         uint32  lm_pw_len = 16;
1114         uint32  nt_pw_len = 16;
1115         uint32  nt_pw_hist_len;
1116         uint32 pwHistLen = 0;
1117
1118         *buf = NULL;
1119         buflen = 0;
1120
1121         logon_time = convert_time_t_to_uint32(pdb_get_logon_time(sampass));
1122         logoff_time = convert_time_t_to_uint32(pdb_get_logoff_time(sampass));
1123         kickoff_time = convert_time_t_to_uint32(pdb_get_kickoff_time(sampass));
1124         bad_password_time = convert_time_t_to_uint32(pdb_get_bad_password_time(sampass));
1125         pass_can_change_time = convert_time_t_to_uint32(pdb_get_pass_can_change_time_noncalc(sampass));
1126         pass_must_change_time = convert_time_t_to_uint32(pdb_get_pass_must_change_time(sampass));
1127         pass_last_set_time = convert_time_t_to_uint32(pdb_get_pass_last_set_time(sampass));
1128
1129         user_rid = pdb_get_user_rid(sampass);
1130         group_rid = pdb_get_group_rid(sampass);
1131
1132         username = pdb_get_username(sampass);
1133         if (username) {
1134                 username_len = strlen(username) +1;
1135         } else {
1136                 username_len = 0;
1137         }
1138
1139         domain = pdb_get_domain(sampass);
1140         if (domain) {
1141                 domain_len = strlen(domain) +1;
1142         } else {
1143                 domain_len = 0;
1144         }
1145
1146         nt_username = pdb_get_nt_username(sampass);
1147         if (nt_username) {
1148                 nt_username_len = strlen(nt_username) +1;
1149         } else {
1150                 nt_username_len = 0;
1151         }
1152
1153         fullname = pdb_get_fullname(sampass);
1154         if (fullname) {
1155                 fullname_len = strlen(fullname) +1;
1156         } else {
1157                 fullname_len = 0;
1158         }
1159
1160         /*
1161          * Only updates fields which have been set (not defaults from smb.conf)
1162          */
1163
1164         if (!IS_SAM_DEFAULT(sampass, PDB_DRIVE)) {
1165                 dir_drive = pdb_get_dir_drive(sampass);
1166         } else {
1167                 dir_drive = NULL;
1168         }
1169         if (dir_drive) {
1170                 dir_drive_len = strlen(dir_drive) +1;
1171         } else {
1172                 dir_drive_len = 0;
1173         }
1174
1175         if (!IS_SAM_DEFAULT(sampass, PDB_SMBHOME)) {
1176                 homedir = pdb_get_homedir(sampass);
1177         } else {
1178                 homedir = NULL;
1179         }
1180         if (homedir) {
1181                 homedir_len = strlen(homedir) +1;
1182         } else {
1183                 homedir_len = 0;
1184         }
1185
1186         if (!IS_SAM_DEFAULT(sampass, PDB_LOGONSCRIPT)) {
1187                 logon_script = pdb_get_logon_script(sampass);
1188         } else {
1189                 logon_script = NULL;
1190         }
1191         if (logon_script) {
1192                 logon_script_len = strlen(logon_script) +1;
1193         } else {
1194                 logon_script_len = 0;
1195         }
1196
1197         if (!IS_SAM_DEFAULT(sampass, PDB_PROFILE)) {
1198                 profile_path = pdb_get_profile_path(sampass);
1199         } else {
1200                 profile_path = NULL;
1201         }
1202         if (profile_path) {
1203                 profile_path_len = strlen(profile_path) +1;
1204         } else {
1205                 profile_path_len = 0;
1206         }
1207
1208         lm_pw = pdb_get_lanman_passwd(sampass);
1209         if (!lm_pw) {
1210                 lm_pw_len = 0;
1211         }
1212
1213         nt_pw = pdb_get_nt_passwd(sampass);
1214         if (!nt_pw) {
1215                 nt_pw_len = 0;
1216         }
1217
1218         pdb_get_account_policy(AP_PASSWORD_HISTORY, &pwHistLen);
1219         nt_pw_hist =  pdb_get_pw_history(sampass, &nt_pw_hist_len);
1220         if (pwHistLen && nt_pw_hist && nt_pw_hist_len) {
1221                 nt_pw_hist_len *= PW_HISTORY_ENTRY_LEN;
1222         } else {
1223                 nt_pw_hist_len = 0;
1224         }
1225
1226         acct_desc = pdb_get_acct_desc(sampass);
1227         if (acct_desc) {
1228                 acct_desc_len = strlen(acct_desc) +1;
1229         } else {
1230                 acct_desc_len = 0;
1231         }
1232
1233         workstations = pdb_get_workstations(sampass);
1234         if (workstations) {
1235                 workstations_len = strlen(workstations) +1;
1236         } else {
1237                 workstations_len = 0;
1238         }
1239
1240         unknown_str = NULL;
1241         unknown_str_len = 0;
1242
1243         munged_dial = pdb_get_munged_dial(sampass);
1244         if (munged_dial) {
1245                 munged_dial_len = strlen(munged_dial) +1;
1246         } else {
1247                 munged_dial_len = 0;
1248         }
1249
1250 /* TDB_FORMAT_STRING_V3       "dddddddBBBBBBBBBBBBddBBBdwdBwwd" */
1251
1252         /* one time to get the size needed */
1253         len = tdb_pack(NULL, 0,  TDB_FORMAT_STRING_V3,
1254                 logon_time,                             /* d */
1255                 logoff_time,                            /* d */
1256                 kickoff_time,                           /* d */
1257                 bad_password_time,                      /* d */
1258                 pass_last_set_time,                     /* d */
1259                 pass_can_change_time,                   /* d */
1260                 pass_must_change_time,                  /* d */
1261                 username_len, username,                 /* B */
1262                 domain_len, domain,                     /* B */
1263                 nt_username_len, nt_username,           /* B */
1264                 fullname_len, fullname,                 /* B */
1265                 homedir_len, homedir,                   /* B */
1266                 dir_drive_len, dir_drive,               /* B */
1267                 logon_script_len, logon_script,         /* B */
1268                 profile_path_len, profile_path,         /* B */
1269                 acct_desc_len, acct_desc,               /* B */
1270                 workstations_len, workstations,         /* B */
1271                 unknown_str_len, unknown_str,           /* B */
1272                 munged_dial_len, munged_dial,           /* B */
1273                 user_rid,                               /* d */
1274                 group_rid,                              /* d */
1275                 lm_pw_len, lm_pw,                       /* B */
1276                 nt_pw_len, nt_pw,                       /* B */
1277                 nt_pw_hist_len, nt_pw_hist,             /* B */
1278                 pdb_get_acct_ctrl(sampass),             /* d */
1279                 pdb_get_logon_divs(sampass),            /* w */
1280                 pdb_get_hours_len(sampass),             /* d */
1281                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1282                 pdb_get_bad_password_count(sampass),    /* w */
1283                 pdb_get_logon_count(sampass),           /* w */
1284                 pdb_get_unknown_6(sampass));            /* d */
1285
1286         if (size_only) {
1287                 return buflen;
1288         }
1289
1290         /* malloc the space needed */
1291         if ( (*buf=(uint8*)SMB_MALLOC(len)) == NULL) {
1292                 DEBUG(0,("init_buffer_from_sam_v3: Unable to malloc() memory for buffer!\n"));
1293                 return (-1);
1294         }
1295
1296         /* now for the real call to tdb_pack() */
1297         buflen = tdb_pack(*buf, len,  TDB_FORMAT_STRING_V3,
1298                 logon_time,                             /* d */
1299                 logoff_time,                            /* d */
1300                 kickoff_time,                           /* d */
1301                 bad_password_time,                      /* d */
1302                 pass_last_set_time,                     /* d */
1303                 pass_can_change_time,                   /* d */
1304                 pass_must_change_time,                  /* d */
1305                 username_len, username,                 /* B */
1306                 domain_len, domain,                     /* B */
1307                 nt_username_len, nt_username,           /* B */
1308                 fullname_len, fullname,                 /* B */
1309                 homedir_len, homedir,                   /* B */
1310                 dir_drive_len, dir_drive,               /* B */
1311                 logon_script_len, logon_script,         /* B */
1312                 profile_path_len, profile_path,         /* B */
1313                 acct_desc_len, acct_desc,               /* B */
1314                 workstations_len, workstations,         /* B */
1315                 unknown_str_len, unknown_str,           /* B */
1316                 munged_dial_len, munged_dial,           /* B */
1317                 user_rid,                               /* d */
1318                 group_rid,                              /* d */
1319                 lm_pw_len, lm_pw,                       /* B */
1320                 nt_pw_len, nt_pw,                       /* B */
1321                 nt_pw_hist_len, nt_pw_hist,             /* B */
1322                 pdb_get_acct_ctrl(sampass),             /* d */
1323                 pdb_get_logon_divs(sampass),            /* w */
1324                 pdb_get_hours_len(sampass),             /* d */
1325                 MAX_HOURS_LEN, pdb_get_hours(sampass),  /* B */
1326                 pdb_get_bad_password_count(sampass),    /* w */
1327                 pdb_get_logon_count(sampass),           /* w */
1328                 pdb_get_unknown_6(sampass));            /* d */
1329
1330         /* check to make sure we got it correct */
1331         if (buflen != len) {
1332                 DEBUG(0, ("init_buffer_from_sam_v3: somthing odd is going on here: bufflen (%lu) != len (%lu) in tdb_pack operations!\n",
1333                           (unsigned long)buflen, (unsigned long)len));
1334                 /* error */
1335                 SAFE_FREE (*buf);
1336                 return (-1);
1337         }
1338
1339         return (buflen);
1340 }
1341
1342
1343 /*********************************************************************
1344 *********************************************************************/
1345
1346 BOOL pdb_copy_sam_account(struct samu *dst, struct samu *src )
1347 {
1348         uint8 *buf = NULL;
1349         int len;
1350
1351         len = init_buffer_from_sam_v3(&buf, src, False);
1352         if (len == -1 || !buf) {
1353                 SAFE_FREE(buf);
1354                 return False;
1355         }
1356
1357         if (!init_sam_from_buffer_v3( dst, buf, len )) {
1358                 free(buf);
1359                 return False;
1360         }
1361
1362         dst->methods = src->methods;
1363
1364         if ( src->unix_pw ) {
1365                 dst->unix_pw = tcopy_passwd( dst, src->unix_pw );
1366                 if (!dst->unix_pw) {
1367                         free(buf);
1368                         return False;
1369                 }
1370         }
1371
1372         free(buf);
1373         return True;
1374 }
1375
1376 /*********************************************************************
1377  Update the bad password count checking the AP_RESET_COUNT_TIME
1378 *********************************************************************/
1379
1380 BOOL pdb_update_bad_password_count(struct samu *sampass, BOOL *updated)
1381 {
1382         time_t LastBadPassword;
1383         uint16 BadPasswordCount;
1384         uint32 resettime;
1385         BOOL res;
1386
1387         BadPasswordCount = pdb_get_bad_password_count(sampass);
1388         if (!BadPasswordCount) {
1389                 DEBUG(9, ("No bad password attempts.\n"));
1390                 return True;
1391         }
1392
1393         become_root();
1394         res = pdb_get_account_policy(AP_RESET_COUNT_TIME, &resettime);
1395         unbecome_root();
1396
1397         if (!res) {
1398                 DEBUG(0, ("pdb_update_bad_password_count: pdb_get_account_policy failed.\n"));
1399                 return False;
1400         }
1401
1402         /* First, check if there is a reset time to compare */
1403         if ((resettime == (uint32) -1) || (resettime == 0)) {
1404                 DEBUG(9, ("No reset time, can't reset bad pw count\n"));
1405                 return True;
1406         }
1407
1408         LastBadPassword = pdb_get_bad_password_time(sampass);
1409         DEBUG(7, ("LastBadPassword=%d, resettime=%d, current time=%d.\n",
1410                    (uint32) LastBadPassword, resettime, (uint32)time(NULL)));
1411         if (time(NULL) > (LastBadPassword + convert_uint32_to_time_t(resettime)*60)){
1412                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1413                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1414                 if (updated) {
1415                         *updated = True;
1416                 }
1417         }
1418
1419         return True;
1420 }
1421
1422 /*********************************************************************
1423  Update the ACB_AUTOLOCK flag checking the AP_LOCK_ACCOUNT_DURATION
1424 *********************************************************************/
1425
1426 BOOL pdb_update_autolock_flag(struct samu *sampass, BOOL *updated)
1427 {
1428         uint32 duration;
1429         time_t LastBadPassword;
1430         BOOL res;
1431
1432         if (!(pdb_get_acct_ctrl(sampass) & ACB_AUTOLOCK)) {
1433                 DEBUG(9, ("pdb_update_autolock_flag: Account %s not autolocked, no check needed\n",
1434                         pdb_get_username(sampass)));
1435                 return True;
1436         }
1437
1438         become_root();
1439         res = pdb_get_account_policy(AP_LOCK_ACCOUNT_DURATION, &duration);
1440         unbecome_root();
1441
1442         if (!res) {
1443                 DEBUG(0, ("pdb_update_autolock_flag: pdb_get_account_policy failed.\n"));
1444                 return False;
1445         }
1446
1447         /* First, check if there is a duration to compare */
1448         if ((duration == (uint32) -1)  || (duration == 0)) {
1449                 DEBUG(9, ("pdb_update_autolock_flag: No reset duration, can't reset autolock\n"));
1450                 return True;
1451         }
1452
1453         LastBadPassword = pdb_get_bad_password_time(sampass);
1454         DEBUG(7, ("pdb_update_autolock_flag: Account %s, LastBadPassword=%d, duration=%d, current time =%d.\n",
1455                   pdb_get_username(sampass), (uint32)LastBadPassword, duration*60, (uint32)time(NULL)));
1456
1457         if (LastBadPassword == (time_t)0) {
1458                 DEBUG(1,("pdb_update_autolock_flag: Account %s "
1459                          "administratively locked out with no bad password "
1460                          "time. Leaving locked out.\n",
1461                          pdb_get_username(sampass) ));
1462                 return True;
1463         }
1464
1465         if ((time(NULL) > (LastBadPassword + convert_uint32_to_time_t(duration) * 60))) {
1466                 pdb_set_acct_ctrl(sampass,
1467                                   pdb_get_acct_ctrl(sampass) & ~ACB_AUTOLOCK,
1468                                   PDB_CHANGED);
1469                 pdb_set_bad_password_count(sampass, 0, PDB_CHANGED);
1470                 pdb_set_bad_password_time(sampass, 0, PDB_CHANGED);
1471                 if (updated) {
1472                         *updated = True;
1473                 }
1474         }
1475
1476         return True;
1477 }
1478
1479 /*********************************************************************
1480  Increment the bad_password_count
1481 *********************************************************************/
1482
1483 BOOL pdb_increment_bad_password_count(struct samu *sampass)
1484 {
1485         uint32 account_policy_lockout;
1486         BOOL autolock_updated = False, badpw_updated = False;
1487         BOOL ret;
1488
1489         /* Retrieve the account lockout policy */
1490         become_root();
1491         ret = pdb_get_account_policy(AP_BAD_ATTEMPT_LOCKOUT, &account_policy_lockout);
1492         unbecome_root();
1493         if ( !ret ) {
1494                 DEBUG(0, ("pdb_increment_bad_password_count: pdb_get_account_policy failed.\n"));
1495                 return False;
1496         }
1497
1498         /* If there is no policy, we don't need to continue checking */
1499         if (!account_policy_lockout) {
1500                 DEBUG(9, ("No lockout policy, don't track bad passwords\n"));
1501                 return True;
1502         }
1503
1504         /* Check if the autolock needs to be cleared */
1505         if (!pdb_update_autolock_flag(sampass, &autolock_updated))
1506                 return False;
1507
1508         /* Check if the badpw count needs to be reset */
1509         if (!pdb_update_bad_password_count(sampass, &badpw_updated))
1510                 return False;
1511
1512         /*
1513           Ok, now we can assume that any resetting that needs to be
1514           done has been done, and just get on with incrementing
1515           and autolocking if necessary
1516         */
1517
1518         pdb_set_bad_password_count(sampass,
1519                                    pdb_get_bad_password_count(sampass)+1,
1520                                    PDB_CHANGED);
1521         pdb_set_bad_password_time(sampass, time(NULL), PDB_CHANGED);
1522
1523
1524         if (pdb_get_bad_password_count(sampass) < account_policy_lockout)
1525                 return True;
1526
1527         if (!pdb_set_acct_ctrl(sampass,
1528                                pdb_get_acct_ctrl(sampass) | ACB_AUTOLOCK,
1529                                PDB_CHANGED)) {
1530                 DEBUG(1, ("pdb_increment_bad_password_count:failed to set 'autolock' flag. \n"));
1531                 return False;
1532         }
1533
1534         return True;
1535 }
1536
1537
1538 /*******************************************************************
1539  Wrapper around retrieving the trust account password
1540 *******************************************************************/
1541
1542 BOOL get_trust_pw(const char *domain, uint8 ret_pwd[16], uint32 *channel)
1543 {
1544         DOM_SID sid;
1545         char *pwd;
1546         time_t last_set_time;
1547
1548         /* if we are a DC and this is not our domain, then lookup an account
1549                 for the domain trust */
1550
1551         if ( IS_DC && !strequal(domain, lp_workgroup()) && lp_allow_trusted_domains() ) {
1552                 if (!pdb_get_trusteddom_pw(domain, &pwd, &sid, &last_set_time)) {
1553                         DEBUG(0, ("get_trust_pw: could not fetch trust "
1554                                 "account password for trusted domain %s\n",
1555                                 domain));
1556                         return False;
1557                 }
1558
1559                 *channel = SEC_CHAN_DOMAIN;
1560                 E_md4hash(pwd, ret_pwd);
1561                 SAFE_FREE(pwd);
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         if (secrets_fetch_trust_account_password(domain, ret_pwd,
1570                                                 &last_set_time, channel))
1571                 return True;
1572
1573         DEBUG(5, ("get_trust_pw: could not fetch trust account "
1574                 "password for domain %s\n", domain));
1575         return False;
1576 }
1577
1578 /* END */