source3/passdb/pdb_interface.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3    Password and authentication handling
   4    Copyright (C) Andrew Bartlett                        2002
   5    Copyright (C) Jelmer Vernooij                        2002
   6
   7    This program is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as published by
   9    the Free Software Foundation; either version 2 of the License, or
  10    (at your option) any later version.
  11
  12    This program is distributed in the hope that it will be useful,
  13    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15    GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with this program; if not, write to the Free Software
  19    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  20 */
  21
  22 #include "includes.h"
  23
  24 #undef DBGC_CLASS
  25 #define DBGC_CLASS DBGC_PASSDB
  26
  27 static struct pdb_init_function_entry *backends = NULL;
  28
  29 static void lazy_initialize_passdb(void)
  30 {
  31         static BOOL initialized = False;
  32         if(initialized)return;
  33         static_init_pdb;
  34         initialized = True;
  35 }
  36
  37 static struct pdb_init_function_entry *pdb_find_backend_entry(const char *name);
  38
  39 NTSTATUS smb_register_passdb(int version, const char *name, pdb_init_function init)
  40 {
  41         struct pdb_init_function_entry *entry = backends;
  42
  43         if(version != PASSDB_INTERFACE_VERSION) {
  44                 DEBUG(0,("Can't register passdb backend!\n"
  45                          "You tried to register a passdb module with PASSDB_INTERFACE_VERSION %d, "
  46                          "while this version of samba uses version %d\n",
  47                          version,PASSDB_INTERFACE_VERSION));
  48                 return NT_STATUS_OBJECT_TYPE_MISMATCH;
  49         }
  50
  51         if (!name || !init) {
  52                 return NT_STATUS_INVALID_PARAMETER;
  53         }
  54
  55         DEBUG(5,("Attempting to register passdb backend %s\n", name));
  56
  57         /* Check for duplicates */
  58         if (pdb_find_backend_entry(name)) {
  59                 DEBUG(0,("There already is a passdb backend registered with the name %s!\n", name));
  60                 return NT_STATUS_OBJECT_NAME_COLLISION;
  61         }
  62
  63         entry = smb_xmalloc(sizeof(struct pdb_init_function_entry));
  64         entry->name = smb_xstrdup(name);
  65         entry->init = init;
  66
  67         DLIST_ADD(backends, entry);
  68         DEBUG(5,("Successfully added passdb backend '%s'\n", name));
  69         return NT_STATUS_OK;
  70 }
  71
  72 static struct pdb_init_function_entry *pdb_find_backend_entry(const char *name)
  73 {
  74         struct pdb_init_function_entry *entry = backends;
  75
  76         while(entry) {
  77                 if (strcmp(entry->name, name)==0) return entry;
  78                 entry = entry->next;
  79         }
  80
  81         return NULL;
  82 }
  83
  84 static NTSTATUS context_setsampwent(struct pdb_context *context, BOOL update)
  85 {
  86         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
  87
  88         if (!context) {
  89                 DEBUG(0, ("invalid pdb_context specified!\n"));
  90                 return ret;
  91         }
  92
  93         context->pwent_methods = context->pdb_methods;
  94
  95         if (!context->pwent_methods) {
  96                 /* No passdbs at all */
  97                 return ret;
  98         }
  99
 100         while (NT_STATUS_IS_ERR(ret = context->pwent_methods->setsampwent(context->pwent_methods, update))) {
 101                 context->pwent_methods = context->pwent_methods->next;
 102                 if (context->pwent_methods == NULL)
 103                         return NT_STATUS_UNSUCCESSFUL;
 104         }
 105         return ret;
 106 }
 107
 108 static void context_endsampwent(struct pdb_context *context)
 109 {
 110         if ((!context)){
 111                 DEBUG(0, ("invalid pdb_context specified!\n"));
 112                 return;
 113         }
 114
 115         if (context->pwent_methods && context->pwent_methods->endsampwent)
 116                 context->pwent_methods->endsampwent(context->pwent_methods);
 117
 118         /* So we won't get strange data when calling getsampwent now */
 119         context->pwent_methods = NULL;
 120 }
 121
 122 static NTSTATUS context_getsampwent(struct pdb_context *context, SAM_ACCOUNT *user)
 123 {
 124         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 125
 126         if ((!context) || (!context->pwent_methods)) {
 127                 DEBUG(0, ("invalid pdb_context specified!\n"));
 128                 return ret;
 129         }
 130         /* Loop until we find something useful */
 131         while (NT_STATUS_IS_ERR(ret = context->pwent_methods->getsampwent(context->pwent_methods, user))) {
 132
 133                 context->pwent_methods->endsampwent(context->pwent_methods);
 134
 135                 context->pwent_methods = context->pwent_methods->next;
 136
 137                 /* All methods are checked now. There are no more entries */
 138                 if (context->pwent_methods == NULL)
 139                         return ret;
 140
 141                 context->pwent_methods->setsampwent(context->pwent_methods, False);
 142         }
 143         user->methods = context->pwent_methods;
 144         return ret;
 145 }
 146
 147 static NTSTATUS context_getsampwnam(struct pdb_context *context, SAM_ACCOUNT *sam_acct, const char *username)
 148 {
 149         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 150
 151         struct pdb_methods *curmethods;
 152         if ((!context)) {
 153                 DEBUG(0, ("invalid pdb_context specified!\n"));
 154                 return ret;
 155         }
 156         curmethods = context->pdb_methods;
 157         while (curmethods){
 158                 if (NT_STATUS_IS_OK(ret = curmethods->getsampwnam(curmethods, sam_acct, username))) {
 159                         sam_acct->methods = curmethods;
 160                         return ret;
 161                 }
 162                 curmethods = curmethods->next;
 163         }
 164
 165         return ret;
 166 }
 167
 168 static NTSTATUS context_getsampwsid(struct pdb_context *context, SAM_ACCOUNT *sam_acct, const DOM_SID *sid)
 169 {
 170         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 171
 172         struct pdb_methods *curmethods;
 173         if ((!context)) {
 174                 DEBUG(0, ("invalid pdb_context specified!\n"));
 175                 return ret;
 176         }
 177
 178         curmethods = context->pdb_methods;
 179
 180         while (curmethods){
 181                 if (NT_STATUS_IS_OK(ret = curmethods->getsampwsid(curmethods, sam_acct, sid))) {
 182                         sam_acct->methods = curmethods;
 183                         return ret;
 184                 }
 185                 curmethods = curmethods->next;
 186         }
 187
 188         return ret;
 189 }
 190
 191 static NTSTATUS context_add_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
 192 {
 193         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 194
 195         if ((!context) || (!context->pdb_methods)) {
 196                 DEBUG(0, ("invalid pdb_context specified!\n"));
 197                 return ret;
 198         }
 199
 200         /** @todo  This is where a 're-read on add' should be done */
 201         /* We now add a new account to the first database listed.
 202          * Should we? */
 203
 204         return context->pdb_methods->add_sam_account(context->pdb_methods, sam_acct);
 205 }
 206
 207 static NTSTATUS context_update_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
 208 {
 209         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 210
 211         if (!context) {
 212                 DEBUG(0, ("invalid pdb_context specified!\n"));
 213                 return ret;
 214         }
 215
 216         if (!sam_acct || !sam_acct->methods){
 217                 DEBUG(0, ("invalid sam_acct specified\n"));
 218                 return ret;
 219         }
 220
 221         /** @todo  This is where a 're-read on update' should be done */
 222
 223         return sam_acct->methods->update_sam_account(sam_acct->methods, sam_acct);
 224 }
 225
 226 static NTSTATUS context_delete_sam_account(struct pdb_context *context, SAM_ACCOUNT *sam_acct)
 227 {
 228         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 229
 230         struct pdb_methods *pdb_selected;
 231         if (!context) {
 232                 DEBUG(0, ("invalid pdb_context specified!\n"));
 233                 return ret;
 234         }
 235
 236         if (!sam_acct->methods){
 237                 pdb_selected = context->pdb_methods;
 238                 /* There's no passdb backend specified for this account.
 239                  * Try to delete it in every passdb available
 240                  * Needed to delete accounts in smbpasswd that are not
 241                  * in /etc/passwd.
 242                  */
 243                 while (pdb_selected){
 244                         if (NT_STATUS_IS_OK(ret = pdb_selected->delete_sam_account(pdb_selected, sam_acct))) {
 245                                 return ret;
 246                         }
 247                         pdb_selected = pdb_selected->next;
 248                 }
 249                 return ret;
 250         }
 251
 252         if (!sam_acct->methods->delete_sam_account){
 253                 DEBUG(0,("invalid sam_acct->methods->delete_sam_account\n"));
 254                 return ret;
 255         }
 256
 257         return sam_acct->methods->delete_sam_account(sam_acct->methods, sam_acct);
 258 }
 259
 260 static NTSTATUS context_getgrsid(struct pdb_context *context,
 261                                  GROUP_MAP *map, DOM_SID sid)
 262 {
 263         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 264
 265         struct pdb_methods *curmethods;
 266         if ((!context)) {
 267                 DEBUG(0, ("invalid pdb_context specified!\n"));
 268                 return ret;
 269         }
 270         curmethods = context->pdb_methods;
 271         while (curmethods){
 272                 ret = curmethods->getgrsid(curmethods, map, sid);
 273                 if (NT_STATUS_IS_OK(ret)) {
 274                         map->methods = curmethods;
 275                         return ret;
 276                 }
 277                 curmethods = curmethods->next;
 278         }
 279
 280         return ret;
 281 }
 282
 283 static NTSTATUS context_getgrgid(struct pdb_context *context,
 284                                  GROUP_MAP *map, gid_t gid)
 285 {
 286         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 287
 288         struct pdb_methods *curmethods;
 289         if ((!context)) {
 290                 DEBUG(0, ("invalid pdb_context specified!\n"));
 291                 return ret;
 292         }
 293         curmethods = context->pdb_methods;
 294         while (curmethods){
 295                 ret = curmethods->getgrgid(curmethods, map, gid);
 296                 if (NT_STATUS_IS_OK(ret)) {
 297                         map->methods = curmethods;
 298                         return ret;
 299                 }
 300                 curmethods = curmethods->next;
 301         }
 302
 303         return ret;
 304 }
 305
 306 static NTSTATUS context_getgrnam(struct pdb_context *context,
 307                                  GROUP_MAP *map, char *name)
 308 {
 309         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 310
 311         struct pdb_methods *curmethods;
 312         if ((!context)) {
 313                 DEBUG(0, ("invalid pdb_context specified!\n"));
 314                 return ret;
 315         }
 316         curmethods = context->pdb_methods;
 317         while (curmethods){
 318                 ret = curmethods->getgrnam(curmethods, map, name);
 319                 if (NT_STATUS_IS_OK(ret)) {
 320                         map->methods = curmethods;
 321                         return ret;
 322                 }
 323                 curmethods = curmethods->next;
 324         }
 325
 326         return ret;
 327 }
 328
 329 static NTSTATUS context_add_group_mapping_entry(struct pdb_context *context,
 330                                                 GROUP_MAP *map)
 331 {
 332         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 333
 334         if ((!context) || (!context->pdb_methods)) {
 335                 DEBUG(0, ("invalid pdb_context specified!\n"));
 336                 return ret;
 337         }
 338
 339         return context->pdb_methods->add_group_mapping_entry(context->pdb_methods,
 340                                                              map);
 341 }
 342
 343 static NTSTATUS context_update_group_mapping_entry(struct pdb_context *context,
 344                                                    GROUP_MAP *map)
 345 {
 346         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 347
 348         if ((!context) || (!context->pdb_methods)) {
 349                 DEBUG(0, ("invalid pdb_context specified!\n"));
 350                 return ret;
 351         }
 352
 353         return context->
 354                 pdb_methods->update_group_mapping_entry(context->pdb_methods, map);
 355 }
 356
 357 static NTSTATUS context_delete_group_mapping_entry(struct pdb_context *context,
 358                                                    DOM_SID sid)
 359 {
 360         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 361
 362         if ((!context) || (!context->pdb_methods)) {
 363                 DEBUG(0, ("invalid pdb_context specified!\n"));
 364                 return ret;
 365         }
 366
 367         return context->
 368                 pdb_methods->delete_group_mapping_entry(context->pdb_methods, sid);
 369 }
 370
 371 static NTSTATUS context_enum_group_mapping(struct pdb_context *context,
 372                                            enum SID_NAME_USE sid_name_use,
 373                                            GROUP_MAP **rmap, int *num_entries,
 374                                            BOOL unix_only)
 375 {
 376         NTSTATUS ret = NT_STATUS_UNSUCCESSFUL;
 377
 378         if ((!context) || (!context->pdb_methods)) {
 379                 DEBUG(0, ("invalid pdb_context specified!\n"));
 380                 return ret;
 381         }
 382
 383         return context->pdb_methods->enum_group_mapping(context->pdb_methods,
 384                                                         sid_name_use, rmap,
 385                                                         num_entries, unix_only);
 386 }
 387
 388 /******************************************************************
 389   Free and cleanup a pdb context, any associated data and anything
 390   that the attached modules might have associated.
 391  *******************************************************************/
 392
 393 static void free_pdb_context(struct pdb_context **context)
 394 {
 395         struct pdb_methods *pdb_selected = (*context)->pdb_methods;
 396
 397         while (pdb_selected){
 398                 if(pdb_selected->free_private_data)
 399                         pdb_selected->free_private_data(&(pdb_selected->private_data));
 400                 pdb_selected = pdb_selected->next;
 401         }
 402
 403         talloc_destroy((*context)->mem_ctx);
 404         *context = NULL;
 405 }
 406
 407 /******************************************************************
 408   Make a pdb_methods from scratch
 409  *******************************************************************/
 410
 411 static NTSTATUS make_pdb_methods_name(struct pdb_methods **methods, struct pdb_context *context, const char *selected)
 412 {
 413         char *module_name = smb_xstrdup(selected);
 414         char *module_location = NULL, *p;
 415         struct pdb_init_function_entry *entry;
 416         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 417
 418         lazy_initialize_passdb();
 419
 420         p = strchr(module_name, ':');
 421
 422         if (p) {
 423                 *p = 0;
 424                 module_location = p+1;
 425                 trim_string(module_location, " ", " ");
 426         }
 427
 428         trim_string(module_name, " ", " ");
 429
 430
 431         DEBUG(5,("Attempting to find an passdb backend to match %s (%s)\n", selected, module_name));
 432
 433         entry = pdb_find_backend_entry(module_name);
 434
 435         /* Try to find a module that contains this module */
 436         if (!entry) {
 437                 DEBUG(2,("No builtin backend found, trying to load plugin\n"));
 438                 if(NT_STATUS_IS_OK(smb_probe_module("pdb", module_name)) && !(entry = pdb_find_backend_entry(module_name))) {
 439                         DEBUG(0,("Plugin is available, but doesn't register passdb backend %s\n", module_name));
 440                         SAFE_FREE(module_name);
 441                         return NT_STATUS_UNSUCCESSFUL;
 442                 }
 443         }
 444
 445         /* No such backend found */
 446         if(!entry) {
 447                 DEBUG(0,("No builtin nor plugin backend for %s found\n", module_name));
 448                 SAFE_FREE(module_name);
 449                 return NT_STATUS_INVALID_PARAMETER;
 450         }
 451
 452         DEBUG(5,("Found pdb backend %s\n", module_name));
 453         nt_status = entry->init(context, methods, module_location);
 454         if (NT_STATUS_IS_OK(nt_status)) {
 455                 DEBUG(5,("pdb backend %s has a valid init\n", selected));
 456         } else {
 457                 DEBUG(0,("pdb backend %s did not correctly init (error was %s)\n", selected, nt_errstr(nt_status)));
 458         }
 459         SAFE_FREE(module_name);
 460         return nt_status;
 461 }
 462
 463 /******************************************************************
 464   Make a pdb_context from scratch.
 465  *******************************************************************/
 466
 467 static NTSTATUS make_pdb_context(struct pdb_context **context)
 468 {
 469         TALLOC_CTX *mem_ctx;
 470
 471         mem_ctx = talloc_init("pdb_context internal allocation context");
 472
 473         if (!mem_ctx) {
 474                 DEBUG(0, ("make_pdb_context: talloc init failed!\n"));
 475                 return NT_STATUS_NO_MEMORY;
 476         }
 477
 478         *context = talloc(mem_ctx, sizeof(**context));
 479         if (!*context) {
 480                 DEBUG(0, ("make_pdb_context: talloc failed!\n"));
 481                 return NT_STATUS_NO_MEMORY;
 482         }
 483
 484         ZERO_STRUCTP(*context);
 485
 486         (*context)->mem_ctx = mem_ctx;
 487
 488         (*context)->pdb_setsampwent = context_setsampwent;
 489         (*context)->pdb_endsampwent = context_endsampwent;
 490         (*context)->pdb_getsampwent = context_getsampwent;
 491         (*context)->pdb_getsampwnam = context_getsampwnam;
 492         (*context)->pdb_getsampwsid = context_getsampwsid;
 493         (*context)->pdb_add_sam_account = context_add_sam_account;
 494         (*context)->pdb_update_sam_account = context_update_sam_account;
 495         (*context)->pdb_delete_sam_account = context_delete_sam_account;
 496         (*context)->pdb_getgrsid = context_getgrsid;
 497         (*context)->pdb_getgrgid = context_getgrgid;
 498         (*context)->pdb_getgrnam = context_getgrnam;
 499         (*context)->pdb_add_group_mapping_entry = context_add_group_mapping_entry;
 500         (*context)->pdb_update_group_mapping_entry = context_update_group_mapping_entry;
 501         (*context)->pdb_delete_group_mapping_entry = context_delete_group_mapping_entry;
 502         (*context)->pdb_enum_group_mapping = context_enum_group_mapping;
 503
 504         (*context)->free_fn = free_pdb_context;
 505
 506         return NT_STATUS_OK;
 507 }
 508
 509
 510 /******************************************************************
 511   Make a pdb_context, given an array of strings
 512  *******************************************************************/
 513
 514 NTSTATUS make_pdb_context_list(struct pdb_context **context, const char **selected)
 515 {
 516         int i = 0;
 517         struct pdb_methods *curmethods, *tmpmethods;
 518         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 519
 520         if (!NT_STATUS_IS_OK(nt_status = make_pdb_context(context))) {
 521                 return nt_status;
 522         }
 523
 524         while (selected[i]){
 525                 /* Try to initialise pdb */
 526                 DEBUG(5,("Trying to load: %s\n", selected[i]));
 527                 if (!NT_STATUS_IS_OK(nt_status = make_pdb_methods_name(&curmethods, *context, selected[i]))) {
 528                         DEBUG(1, ("Loading %s failed!\n", selected[i]));
 529                         free_pdb_context(context);
 530                         return nt_status;
 531                 }
 532                 curmethods->parent = *context;
 533                 DLIST_ADD_END((*context)->pdb_methods, curmethods, tmpmethods);
 534                 i++;
 535         }
 536
 537         return NT_STATUS_OK;
 538 }
 539
 540 /******************************************************************
 541   Make a pdb_context, given a text string.
 542  *******************************************************************/
 543
 544 NTSTATUS make_pdb_context_string(struct pdb_context **context, const char *selected)
 545 {
 546         NTSTATUS ret;
 547         char **newsel = str_list_make(selected, NULL);
 548         ret = make_pdb_context_list(context, (const char **)newsel);
 549         str_list_free(&newsel);
 550         return ret;
 551 }
 552
 553 /******************************************************************
 554  Return an already initialised pdb_context, to facilitate backward
 555  compatibility (see functions below).
 556 *******************************************************************/
 557
 558 static struct pdb_context *pdb_get_static_context(BOOL reload)
 559 {
 560         static struct pdb_context *pdb_context = NULL;
 561
 562         if ((pdb_context) && (reload)) {
 563                 pdb_context->free_fn(&pdb_context);
 564                 if (NT_STATUS_IS_ERR(make_pdb_context_list(&pdb_context, lp_passdb_backend()))) {
 565                         return NULL;
 566                 }
 567         }
 568
 569         if (!pdb_context) {
 570                 if (NT_STATUS_IS_ERR(make_pdb_context_list(&pdb_context, lp_passdb_backend()))) {
 571                         return NULL;
 572                 }
 573         }
 574
 575         return pdb_context;
 576 }
 577
 578 /******************************************************************
 579  Backward compatibility functions for the original passdb interface
 580 *******************************************************************/
 581
 582 BOOL pdb_setsampwent(BOOL update)
 583 {
 584         struct pdb_context *pdb_context = pdb_get_static_context(False);
 585
 586         if (!pdb_context) {
 587                 return False;
 588         }
 589
 590         return NT_STATUS_IS_OK(pdb_context->pdb_setsampwent(pdb_context, update));
 591 }
 592
 593 void pdb_endsampwent(void)
 594 {
 595         struct pdb_context *pdb_context = pdb_get_static_context(False);
 596
 597         if (!pdb_context) {
 598                 return;
 599         }
 600
 601         pdb_context->pdb_endsampwent(pdb_context);
 602 }
 603
 604 BOOL pdb_getsampwent(SAM_ACCOUNT *user)
 605 {
 606         struct pdb_context *pdb_context = pdb_get_static_context(False);
 607
 608         if (!pdb_context) {
 609                 return False;
 610         }
 611
 612         return NT_STATUS_IS_OK(pdb_context->pdb_getsampwent(pdb_context, user));
 613 }
 614
 615 BOOL pdb_getsampwnam(SAM_ACCOUNT *sam_acct, const char *username)
 616 {
 617         struct pdb_context *pdb_context = pdb_get_static_context(False);
 618
 619         if (!pdb_context) {
 620                 return False;
 621         }
 622
 623         return NT_STATUS_IS_OK(pdb_context->pdb_getsampwnam(pdb_context, sam_acct, username));
 624 }
 625
 626 BOOL pdb_getsampwsid(SAM_ACCOUNT *sam_acct, const DOM_SID *sid)
 627 {
 628         struct pdb_context *pdb_context = pdb_get_static_context(False);
 629
 630         if (!pdb_context) {
 631                 return False;
 632         }
 633
 634         return NT_STATUS_IS_OK(pdb_context->pdb_getsampwsid(pdb_context, sam_acct, sid));
 635 }
 636
 637 BOOL pdb_add_sam_account(SAM_ACCOUNT *sam_acct)
 638 {
 639         struct pdb_context *pdb_context = pdb_get_static_context(False);
 640
 641         if (!pdb_context) {
 642                 return False;
 643         }
 644
 645         return NT_STATUS_IS_OK(pdb_context->pdb_add_sam_account(pdb_context, sam_acct));
 646 }
 647
 648 BOOL pdb_update_sam_account(SAM_ACCOUNT *sam_acct)
 649 {
 650         struct pdb_context *pdb_context = pdb_get_static_context(False);
 651
 652         if (!pdb_context) {
 653                 return False;
 654         }
 655
 656         return NT_STATUS_IS_OK(pdb_context->pdb_update_sam_account(pdb_context, sam_acct));
 657 }
 658
 659 BOOL pdb_delete_sam_account(SAM_ACCOUNT *sam_acct)
 660 {
 661         struct pdb_context *pdb_context = pdb_get_static_context(False);
 662
 663         if (!pdb_context) {
 664                 return False;
 665         }
 666
 667         return NT_STATUS_IS_OK(pdb_context->pdb_delete_sam_account(pdb_context, sam_acct));
 668 }
 669
 670 BOOL pdb_getgrsid(GROUP_MAP *map, DOM_SID sid)
 671 {
 672         struct pdb_context *pdb_context = pdb_get_static_context(False);
 673
 674         if (!pdb_context) {
 675                 return False;
 676         }
 677
 678         return NT_STATUS_IS_OK(pdb_context->
 679                                pdb_getgrsid(pdb_context, map, sid));
 680 }
 681
 682 BOOL pdb_getgrgid(GROUP_MAP *map, gid_t gid)
 683 {
 684         struct pdb_context *pdb_context = pdb_get_static_context(False);
 685
 686         if (!pdb_context) {
 687                 return False;
 688         }
 689
 690         return NT_STATUS_IS_OK(pdb_context->
 691                                pdb_getgrgid(pdb_context, map, gid));
 692 }
 693
 694 BOOL pdb_getgrnam(GROUP_MAP *map, char *name)
 695 {
 696         struct pdb_context *pdb_context = pdb_get_static_context(False);
 697
 698         if (!pdb_context) {
 699                 return False;
 700         }
 701
 702         return NT_STATUS_IS_OK(pdb_context->
 703                                pdb_getgrnam(pdb_context, map, name));
 704 }
 705
 706 BOOL pdb_add_group_mapping_entry(GROUP_MAP *map)
 707 {
 708         struct pdb_context *pdb_context = pdb_get_static_context(False);
 709
 710         if (!pdb_context) {
 711                 return False;
 712         }
 713
 714         return NT_STATUS_IS_OK(pdb_context->
 715                                pdb_add_group_mapping_entry(pdb_context, map));
 716 }
 717
 718 BOOL pdb_update_group_mapping_entry(GROUP_MAP *map)
 719 {
 720         struct pdb_context *pdb_context = pdb_get_static_context(False);
 721
 722         if (!pdb_context) {
 723                 return False;
 724         }
 725
 726         return NT_STATUS_IS_OK(pdb_context->
 727                                pdb_update_group_mapping_entry(pdb_context, map));
 728 }
 729
 730 BOOL pdb_delete_group_mapping_entry(DOM_SID sid)
 731 {
 732         struct pdb_context *pdb_context = pdb_get_static_context(False);
 733
 734         if (!pdb_context) {
 735                 return False;
 736         }
 737
 738         return NT_STATUS_IS_OK(pdb_context->
 739                                pdb_delete_group_mapping_entry(pdb_context, sid));
 740 }
 741
 742 BOOL pdb_enum_group_mapping(enum SID_NAME_USE sid_name_use, GROUP_MAP **rmap,
 743                             int *num_entries, BOOL unix_only)
 744 {
 745         struct pdb_context *pdb_context = pdb_get_static_context(False);
 746
 747         if (!pdb_context) {
 748                 return False;
 749         }
 750
 751         return NT_STATUS_IS_OK(pdb_context->
 752                                pdb_enum_group_mapping(pdb_context, sid_name_use,
 753                                                       rmap, num_entries, unix_only));
 754 }
 755
 756 /***************************************************************
 757   Initialize the static context (at smbd startup etc).
 758
 759   If uninitialised, context will auto-init on first use.
 760  ***************************************************************/
 761
 762 BOOL initialize_password_db(BOOL reload)
 763 {
 764         return (pdb_get_static_context(reload) != NULL);
 765 }
 766
 767
 768 /***************************************************************************
 769   Default implementations of some functions.
 770  ****************************************************************************/
 771
 772 static NTSTATUS pdb_default_getsampwnam (struct pdb_methods *methods, SAM_ACCOUNT *user, const char *sname)
 773 {
 774         return NT_STATUS_NO_SUCH_USER;
 775 }
 776
 777 static NTSTATUS pdb_default_getsampwsid(struct pdb_methods *my_methods, SAM_ACCOUNT * user, const DOM_SID *sid)
 778 {
 779         return NT_STATUS_NO_SUCH_USER;
 780 }
 781
 782 static NTSTATUS pdb_default_add_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *newpwd)
 783 {
 784         DEBUG(0,("this backend (%s) should not be listed as the first passdb backend! You can't add users to it.\n", methods->name));
 785         return NT_STATUS_NOT_IMPLEMENTED;
 786 }
 787
 788 static NTSTATUS pdb_default_update_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *newpwd)
 789 {
 790         return NT_STATUS_NOT_IMPLEMENTED;
 791 }
 792
 793 static NTSTATUS pdb_default_delete_sam_account (struct pdb_methods *methods, SAM_ACCOUNT *pwd)
 794 {
 795         return NT_STATUS_NOT_IMPLEMENTED;
 796 }
 797
 798 static NTSTATUS pdb_default_setsampwent(struct pdb_methods *methods, BOOL update)
 799 {
 800         return NT_STATUS_NOT_IMPLEMENTED;
 801 }
 802
 803 static NTSTATUS pdb_default_getsampwent(struct pdb_methods *methods, SAM_ACCOUNT *user)
 804 {
 805         return NT_STATUS_NOT_IMPLEMENTED;
 806 }
 807
 808 static void pdb_default_endsampwent(struct pdb_methods *methods)
 809 {
 810         return; /* NT_STATUS_NOT_IMPLEMENTED; */
 811 }
 812
 813 NTSTATUS make_pdb_methods(TALLOC_CTX *mem_ctx, PDB_METHODS **methods)
 814 {
 815         *methods = talloc(mem_ctx, sizeof(struct pdb_methods));
 816
 817         if (!*methods) {
 818                 return NT_STATUS_NO_MEMORY;
 819         }
 820
 821         ZERO_STRUCTP(*methods);
 822
 823         (*methods)->setsampwent = pdb_default_setsampwent;
 824         (*methods)->endsampwent = pdb_default_endsampwent;
 825         (*methods)->getsampwent = pdb_default_getsampwent;
 826         (*methods)->getsampwnam = pdb_default_getsampwnam;
 827         (*methods)->getsampwsid = pdb_default_getsampwsid;
 828         (*methods)->add_sam_account = pdb_default_add_sam_account;
 829         (*methods)->update_sam_account = pdb_default_update_sam_account;
 830         (*methods)->delete_sam_account = pdb_default_delete_sam_account;
 831
 832         (*methods)->getgrsid = pdb_default_getgrsid;
 833         (*methods)->getgrgid = pdb_default_getgrgid;
 834         (*methods)->getgrnam = pdb_default_getgrnam;
 835         (*methods)->add_group_mapping_entry = pdb_default_add_group_mapping_entry;
 836         (*methods)->update_group_mapping_entry = pdb_default_update_group_mapping_entry;
 837         (*methods)->delete_group_mapping_entry = pdb_default_delete_group_mapping_entry;
 838         (*methods)->enum_group_mapping = pdb_default_enum_group_mapping;
 839
 840         return NT_STATUS_OK;
 841 }