source3/winbindd/idmap_ad.c

   1 /*
   2  *  idmap_ad: map between Active Directory and RFC 2307 or "Services for Unix" (SFU) Accounts
   3  *
   4  * Unix SMB/CIFS implementation.
   5  *
   6  * Winbind ADS backend functions
   7  *
   8  * Copyright (C) Andrew Tridgell 2001
   9  * Copyright (C) Andrew Bartlett <abartlet@samba.org> 2003
  10  * Copyright (C) Gerald (Jerry) Carter 2004-2007
  11  * Copyright (C) Luke Howard 2001-2004
  12  *
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 3 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, see <http://www.gnu.org/licenses/>.
  25  */
  26
  27 #include "includes.h"
  28
  29 #undef DBGC_CLASS
  30 #define DBGC_CLASS DBGC_IDMAP
  31
  32 #define WINBIND_CCACHE_NAME "MEMORY:winbind_ccache"
  33
  34 #define IDMAP_AD_MAX_IDS 30
  35 #define CHECK_ALLOC_DONE(mem) do { \
  36      if (!mem) { \
  37            DEBUG(0, ("Out of memory!\n")); \
  38            ret = NT_STATUS_NO_MEMORY; \
  39            goto done; \
  40       } \
  41 } while (0)
  42
  43 struct idmap_ad_context {
  44         uint32_t filter_low_id;
  45         uint32_t filter_high_id;
  46 };
  47
  48 NTSTATUS init_module(void);
  49
  50 static ADS_STRUCT *ad_idmap_ads = NULL;
  51 static struct posix_schema *ad_schema = NULL;
  52 static enum wb_posix_mapping ad_map_type = WB_POSIX_MAP_UNKNOWN;
  53
  54 /************************************************************************
  55  ***********************************************************************/
  56
  57 static ADS_STRUCT *ad_idmap_cached_connection_internal(void)
  58 {
  59         ADS_STRUCT *ads;
  60         ADS_STATUS status;
  61         bool local = False;
  62         fstring dc_name;
  63         struct sockaddr_storage dc_ip;
  64
  65         if (ad_idmap_ads != NULL) {
  66
  67                 time_t expire;
  68                 time_t now = time(NULL);
  69
  70                 ads = ad_idmap_ads;
  71
  72                 expire = MIN(ads->auth.tgt_expire, ads->auth.tgs_expire);
  73
  74                 /* check for a valid structure */
  75                 DEBUG(7, ("Current tickets expire in %d seconds (at %d, time is now %d)\n",
  76                           (uint32)expire-(uint32)now, (uint32) expire, (uint32) now));
  77
  78                 if ( ads->config.realm && (expire > time(NULL))) {
  79                         return ads;
  80                 }
  81
  82                 /* we own this ADS_STRUCT so make sure it goes away */
  83                 DEBUG(7,("Deleting expired krb5 credential cache\n"));
  84                 ads->is_mine = True;
  85                 ads_destroy( &ads );
  86                 ads_kdestroy(WINBIND_CCACHE_NAME);
  87                 ad_idmap_ads = NULL;
  88                 TALLOC_FREE( ad_schema );
  89         }
  90
  91         if (!local) {
  92                 /* we don't want this to affect the users ccache */
  93                 setenv("KRB5CCNAME", WINBIND_CCACHE_NAME, 1);
  94         }
  95
  96         if ( (ads = ads_init(lp_realm(), lp_workgroup(), NULL)) == NULL ) {
  97                 DEBUG(1,("ads_init failed\n"));
  98                 return NULL;
  99         }
 100
 101         /* the machine acct password might have changed - fetch it every
 102          * time */
 103         SAFE_FREE(ads->auth.password);
 104         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
 105
 106         SAFE_FREE(ads->auth.realm);
 107         ads->auth.realm = SMB_STRDUP(lp_realm());
 108
 109         /* setup server affinity */
 110
 111         get_dc_name( NULL, ads->auth.realm, dc_name, &dc_ip );
 112
 113         status = ads_connect(ads);
 114         if (!ADS_ERR_OK(status)) {
 115                 DEBUG(1, ("ad_idmap_init: failed to connect to AD\n"));
 116                 ads_destroy(&ads);
 117                 return NULL;
 118         }
 119
 120         ads->is_mine = False;
 121
 122         ad_idmap_ads = ads;
 123
 124         return ads;
 125 }
 126
 127 /************************************************************************
 128  ***********************************************************************/
 129
 130 static ADS_STRUCT *ad_idmap_cached_connection(void)
 131 {
 132         ADS_STRUCT *ads = ad_idmap_cached_connection_internal();
 133
 134         if ( !ads )
 135                 return NULL;
 136
 137         /* if we have a valid ADS_STRUCT and the schema model is
 138            defined, then we can return here. */
 139
 140         if ( ad_schema )
 141                 return ads;
 142
 143         /* Otherwise, set the schema model */
 144
 145         if ( (ad_map_type ==  WB_POSIX_MAP_SFU) ||
 146              (ad_map_type ==  WB_POSIX_MAP_SFU20) ||
 147              (ad_map_type ==  WB_POSIX_MAP_RFC2307) )
 148         {
 149                 ADS_STATUS schema_status;
 150
 151                 schema_status = ads_check_posix_schema_mapping( NULL, ads, ad_map_type, &ad_schema);
 152                 if ( !ADS_ERR_OK(schema_status) ) {
 153                         DEBUG(2,("ad_idmap_cached_connection: Failed to obtain schema details!\n"));
 154                         return NULL;
 155                 }
 156         }
 157
 158         return ads;
 159 }
 160
 161 /************************************************************************
 162  ***********************************************************************/
 163
 164 static NTSTATUS idmap_ad_initialize(struct idmap_domain *dom)
 165 {
 166         struct idmap_ad_context *ctx;
 167         char *config_option;
 168         const char *range = NULL;
 169         const char *schema_mode = NULL;
 170
 171         if ( (ctx = TALLOC_ZERO_P(dom, struct idmap_ad_context)) == NULL ) {
 172                 DEBUG(0, ("Out of memory!\n"));
 173                 return NT_STATUS_NO_MEMORY;
 174         }
 175
 176         if ( (config_option = talloc_asprintf(ctx, "idmap config %s", dom->name)) == NULL ) {
 177                 DEBUG(0, ("Out of memory!\n"));
 178                 talloc_free(ctx);
 179                 return NT_STATUS_NO_MEMORY;
 180         }
 181
 182         /* load ranges */
 183         range = lp_parm_const_string(-1, config_option, "range", NULL);
 184         if (range && range[0]) {
 185                 if ((sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) ||
 186                     (ctx->filter_low_id > ctx->filter_high_id)) {
 187                         DEBUG(1, ("ERROR: invalid filter range [%s]", range));
 188                         ctx->filter_low_id = 0;
 189                         ctx->filter_high_id = 0;
 190                 }
 191         }
 192
 193         /* schema mode */
 194         if ( ad_map_type == WB_POSIX_MAP_UNKNOWN )
 195                 ad_map_type = WB_POSIX_MAP_RFC2307;
 196         schema_mode = lp_parm_const_string(-1, config_option, "schema_mode", NULL);
 197         if ( schema_mode && schema_mode[0] ) {
 198                 if ( strequal(schema_mode, "sfu") )
 199                         ad_map_type = WB_POSIX_MAP_SFU;
 200                 else if ( strequal(schema_mode, "sfu20" ) )
 201                         ad_map_type = WB_POSIX_MAP_SFU20;
 202                 else if ( strequal(schema_mode, "rfc2307" ) )
 203                         ad_map_type = WB_POSIX_MAP_RFC2307;
 204                 else
 205                         DEBUG(0,("idmap_ad_initialize: Unknown schema_mode (%s)\n",
 206                                  schema_mode));
 207         }
 208
 209         dom->private_data = ctx;
 210         dom->initialized = True;
 211
 212         talloc_free(config_option);
 213
 214         return NT_STATUS_OK;
 215 }
 216
 217 /************************************************************************
 218  Search up to IDMAP_AD_MAX_IDS entries in maps for a match.
 219  ***********************************************************************/
 220
 221 static struct id_map *find_map_by_id(struct id_map **maps, enum id_type type, uint32_t id)
 222 {
 223         int i;
 224
 225         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 226                 if ((maps[i]->xid.type == type) && (maps[i]->xid.id == id)) {
 227                         return maps[i];
 228                 }
 229         }
 230
 231         return NULL;
 232 }
 233
 234 /************************************************************************
 235  Search up to IDMAP_AD_MAX_IDS entries in maps for a match
 236  ***********************************************************************/
 237
 238 static struct id_map *find_map_by_sid(struct id_map **maps, DOM_SID *sid)
 239 {
 240         int i;
 241
 242         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 243                 if (sid_equal(maps[i]->sid, sid)) {
 244                         return maps[i];
 245                 }
 246         }
 247
 248         return NULL;
 249 }
 250
 251 /************************************************************************
 252  ***********************************************************************/
 253
 254 static NTSTATUS idmap_ad_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 255 {
 256         NTSTATUS ret;
 257         TALLOC_CTX *memctx;
 258         struct idmap_ad_context *ctx;
 259         ADS_STATUS rc;
 260         ADS_STRUCT *ads;
 261         const char *attrs[] = { "sAMAccountType",
 262                                 "objectSid",
 263                                 NULL, /* uidnumber */
 264                                 NULL, /* gidnumber */
 265                                 NULL };
 266         LDAPMessage *res = NULL;
 267         LDAPMessage *entry = NULL;
 268         char *filter = NULL;
 269         int idx = 0;
 270         int bidx = 0;
 271         int count;
 272         int i;
 273         char *u_filter = NULL;
 274         char *g_filter = NULL;
 275
 276         /* Only do query if we are online */
 277         if (idmap_is_offline()) {
 278                 return NT_STATUS_FILE_IS_OFFLINE;
 279         }
 280
 281         /* Initilization my have been deferred because we were offline */
 282         if ( ! dom->initialized) {
 283                 ret = idmap_ad_initialize(dom);
 284                 if ( ! NT_STATUS_IS_OK(ret)) {
 285                         return ret;
 286                 }
 287         }
 288
 289         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 290
 291         if ( (memctx = talloc_new(ctx)) == NULL ) {
 292                 DEBUG(0, ("Out of memory!\n"));
 293                 return NT_STATUS_NO_MEMORY;
 294         }
 295
 296         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 297                 DEBUG(1, ("ADS uninitialized\n"));
 298                 ret = NT_STATUS_UNSUCCESSFUL;
 299                 goto done;
 300         }
 301
 302         attrs[2] = ad_schema->posix_uidnumber_attr;
 303         attrs[3] = ad_schema->posix_gidnumber_attr;
 304
 305 again:
 306         bidx = idx;
 307         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 308                 switch (ids[idx]->xid.type) {
 309                 case ID_TYPE_UID:
 310                         if ( ! u_filter) {
 311                                 u_filter = talloc_asprintf(memctx, "(&(|"
 312                                                            "(sAMAccountType=%d)"
 313                                                            "(sAMAccountType=%d)"
 314                                                            "(sAMAccountType=%d))(|",
 315                                                            ATYPE_NORMAL_ACCOUNT,
 316                                                            ATYPE_WORKSTATION_TRUST,
 317                                                            ATYPE_INTERDOMAIN_TRUST);
 318                         }
 319                         u_filter = talloc_asprintf_append_buffer(u_filter, "(%s=%lu)",
 320                                                           ad_schema->posix_uidnumber_attr,
 321                                                           (unsigned long)ids[idx]->xid.id);
 322                         CHECK_ALLOC_DONE(u_filter);
 323                         break;
 324
 325                 case ID_TYPE_GID:
 326                         if ( ! g_filter) {
 327                                 g_filter = talloc_asprintf(memctx, "(&(|"
 328                                                            "(sAMAccountType=%d)"
 329                                                            "(sAMAccountType=%d))(|",
 330                                                            ATYPE_SECURITY_GLOBAL_GROUP,
 331                                                            ATYPE_SECURITY_LOCAL_GROUP);
 332                         }
 333                         g_filter = talloc_asprintf_append_buffer(g_filter, "(%s=%lu)",
 334                                                           ad_schema->posix_gidnumber_attr,
 335                                                           (unsigned long)ids[idx]->xid.id);
 336                         CHECK_ALLOC_DONE(g_filter);
 337                         break;
 338
 339                 default:
 340                         DEBUG(3, ("Error: mapping requested but Unknown ID type\n"));
 341                         ids[idx]->status = ID_UNKNOWN;
 342                         continue;
 343                 }
 344         }
 345         filter = talloc_asprintf(memctx, "(|");
 346         CHECK_ALLOC_DONE(filter);
 347         if ( u_filter) {
 348                 filter = talloc_asprintf_append_buffer(filter, "%s))", u_filter);
 349                 CHECK_ALLOC_DONE(filter);
 350                         TALLOC_FREE(u_filter);
 351         }
 352         if ( g_filter) {
 353                 filter = talloc_asprintf_append_buffer(filter, "%s))", g_filter);
 354                 CHECK_ALLOC_DONE(filter);
 355                 TALLOC_FREE(g_filter);
 356         }
 357         filter = talloc_asprintf_append_buffer(filter, ")");
 358         CHECK_ALLOC_DONE(filter);
 359
 360         rc = ads_search_retry(ads, &res, filter, attrs);
 361         if (!ADS_ERR_OK(rc)) {
 362                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 363                 ret = NT_STATUS_UNSUCCESSFUL;
 364                 goto done;
 365         }
 366
 367         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 368                 DEBUG(10, ("No IDs found\n"));
 369         }
 370
 371         entry = res;
 372         for (i = 0; (i < count) && entry; i++) {
 373                 DOM_SID sid;
 374                 enum id_type type;
 375                 struct id_map *map;
 376                 uint32_t id;
 377                 uint32_t atype;
 378
 379                 if (i == 0) { /* first entry */
 380                         entry = ads_first_entry(ads, entry);
 381                 } else { /* following ones */
 382                         entry = ads_next_entry(ads, entry);
 383                 }
 384
 385                 if ( !entry ) {
 386                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 387                         break;
 388                 }
 389
 390                 /* first check if the SID is present */
 391                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 392                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 393                         continue;
 394                 }
 395
 396                 /* get type */
 397                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 398                         DEBUG(1, ("could not get SAM account type\n"));
 399                         continue;
 400                 }
 401
 402                 switch (atype & 0xF0000000) {
 403                 case ATYPE_SECURITY_GLOBAL_GROUP:
 404                 case ATYPE_SECURITY_LOCAL_GROUP:
 405                         type = ID_TYPE_GID;
 406                         break;
 407                 case ATYPE_NORMAL_ACCOUNT:
 408                 case ATYPE_WORKSTATION_TRUST:
 409                 case ATYPE_INTERDOMAIN_TRUST:
 410                         type = ID_TYPE_UID;
 411                         break;
 412                 default:
 413                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 414                         continue;
 415                 }
 416
 417                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 418                                                  ad_schema->posix_uidnumber_attr :
 419                                                  ad_schema->posix_gidnumber_attr,
 420                                      &id))
 421                 {
 422                         DEBUG(1, ("Could not get unix ID\n"));
 423                         continue;
 424                 }
 425
 426                 if ((id == 0) ||
 427                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 428                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 429                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 430                                 id, ctx->filter_low_id, ctx->filter_high_id));
 431                         continue;
 432                 }
 433
 434                 map = find_map_by_id(&ids[bidx], type, id);
 435                 if (!map) {
 436                         DEBUG(2, ("WARNING: couldn't match result with requested ID\n"));
 437                         continue;
 438                 }
 439
 440                 sid_copy(map->sid, &sid);
 441
 442                 /* mapped */
 443                 map->status = ID_MAPPED;
 444
 445                 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
 446                            (unsigned long)map->xid.id,
 447                            map->xid.type));
 448         }
 449
 450         if (res) {
 451                 ads_msgfree(ads, res);
 452         }
 453
 454         if (ids[idx]) { /* still some values to map */
 455                 goto again;
 456         }
 457
 458         ret = NT_STATUS_OK;
 459
 460         /* mark all unknown/expired ones as unmapped */
 461         for (i = 0; ids[i]; i++) {
 462                 if (ids[i]->status != ID_MAPPED)
 463                         ids[i]->status = ID_UNMAPPED;
 464         }
 465
 466 done:
 467         talloc_free(memctx);
 468         return ret;
 469 }
 470
 471 /************************************************************************
 472  ***********************************************************************/
 473
 474 static NTSTATUS idmap_ad_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 475 {
 476         NTSTATUS ret;
 477         TALLOC_CTX *memctx;
 478         struct idmap_ad_context *ctx;
 479         ADS_STATUS rc;
 480         ADS_STRUCT *ads;
 481         const char *attrs[] = { "sAMAccountType",
 482                                 "objectSid",
 483                                 NULL, /* attr_uidnumber */
 484                                 NULL, /* attr_gidnumber */
 485                                 NULL };
 486         LDAPMessage *res = NULL;
 487         LDAPMessage *entry = NULL;
 488         char *filter = NULL;
 489         int idx = 0;
 490         int bidx = 0;
 491         int count;
 492         int i;
 493         char *sidstr;
 494
 495         /* Only do query if we are online */
 496         if (idmap_is_offline()) {
 497                 return NT_STATUS_FILE_IS_OFFLINE;
 498         }
 499
 500         /* Initilization my have been deferred because we were offline */
 501         if ( ! dom->initialized) {
 502                 ret = idmap_ad_initialize(dom);
 503                 if ( ! NT_STATUS_IS_OK(ret)) {
 504                         return ret;
 505                 }
 506         }
 507
 508         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 509
 510         if ( (memctx = talloc_new(ctx)) == NULL ) {
 511                 DEBUG(0, ("Out of memory!\n"));
 512                 return NT_STATUS_NO_MEMORY;
 513         }
 514
 515         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 516                 DEBUG(1, ("ADS uninitialized\n"));
 517                 ret = NT_STATUS_UNSUCCESSFUL;
 518                 goto done;
 519         }
 520
 521         attrs[2] = ad_schema->posix_uidnumber_attr;
 522         attrs[3] = ad_schema->posix_gidnumber_attr;
 523
 524 again:
 525         filter = talloc_asprintf(memctx, "(&(|"
 526                                  "(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d)" /* user account types */
 527                                  "(sAMAccountType=%d)(sAMAccountType=%d)" /* group account types */
 528                                  ")(|",
 529                                  ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
 530                                  ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP);
 531
 532         CHECK_ALLOC_DONE(filter);
 533
 534         bidx = idx;
 535         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 536
 537                 sidstr = sid_binstring(ids[idx]->sid);
 538                 filter = talloc_asprintf_append_buffer(filter, "(objectSid=%s)", sidstr);
 539
 540                 free(sidstr);
 541                 CHECK_ALLOC_DONE(filter);
 542         }
 543         filter = talloc_asprintf_append_buffer(filter, "))");
 544         CHECK_ALLOC_DONE(filter);
 545         DEBUG(10, ("Filter: [%s]\n", filter));
 546
 547         rc = ads_search_retry(ads, &res, filter, attrs);
 548         if (!ADS_ERR_OK(rc)) {
 549                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 550                 ret = NT_STATUS_UNSUCCESSFUL;
 551                 goto done;
 552         }
 553
 554         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 555                 DEBUG(10, ("No IDs found\n"));
 556         }
 557
 558         entry = res;
 559         for (i = 0; (i < count) && entry; i++) {
 560                 DOM_SID sid;
 561                 enum id_type type;
 562                 struct id_map *map;
 563                 uint32_t id;
 564                 uint32_t atype;
 565
 566                 if (i == 0) { /* first entry */
 567                         entry = ads_first_entry(ads, entry);
 568                 } else { /* following ones */
 569                         entry = ads_next_entry(ads, entry);
 570                 }
 571
 572                 if ( !entry ) {
 573                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 574                         break;
 575                 }
 576
 577                 /* first check if the SID is present */
 578                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 579                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 580                         continue;
 581                 }
 582
 583                 map = find_map_by_sid(&ids[bidx], &sid);
 584                 if (!map) {
 585                         DEBUG(2, ("WARNING: couldn't match result with requested SID\n"));
 586                         continue;
 587                 }
 588
 589                 /* get type */
 590                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 591                         DEBUG(1, ("could not get SAM account type\n"));
 592                         continue;
 593                 }
 594
 595                 switch (atype & 0xF0000000) {
 596                 case ATYPE_SECURITY_GLOBAL_GROUP:
 597                 case ATYPE_SECURITY_LOCAL_GROUP:
 598                         type = ID_TYPE_GID;
 599                         break;
 600                 case ATYPE_NORMAL_ACCOUNT:
 601                 case ATYPE_WORKSTATION_TRUST:
 602                 case ATYPE_INTERDOMAIN_TRUST:
 603                         type = ID_TYPE_UID;
 604                         break;
 605                 default:
 606                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 607                         continue;
 608                 }
 609
 610                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 611                                                  ad_schema->posix_uidnumber_attr :
 612                                                  ad_schema->posix_gidnumber_attr,
 613                                      &id))
 614                 {
 615                         DEBUG(1, ("Could not get unix ID\n"));
 616                         continue;
 617                 }
 618                 if ((id == 0) ||
 619                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 620                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 621                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 622                                 id, ctx->filter_low_id, ctx->filter_high_id));
 623                         continue;
 624                 }
 625
 626                 /* mapped */
 627                 map->xid.type = type;
 628                 map->xid.id = id;
 629                 map->status = ID_MAPPED;
 630
 631                 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
 632                            (unsigned long)map->xid.id,
 633                            map->xid.type));
 634         }
 635
 636         if (res) {
 637                 ads_msgfree(ads, res);
 638         }
 639
 640         if (ids[idx]) { /* still some values to map */
 641                 goto again;
 642         }
 643
 644         ret = NT_STATUS_OK;
 645
 646         /* mark all unknwoni/expired ones as unmapped */
 647         for (i = 0; ids[i]; i++) {
 648                 if (ids[i]->status != ID_MAPPED)
 649                         ids[i]->status = ID_UNMAPPED;
 650         }
 651
 652 done:
 653         talloc_free(memctx);
 654         return ret;
 655 }
 656
 657 /************************************************************************
 658  ***********************************************************************/
 659
 660 static NTSTATUS idmap_ad_close(struct idmap_domain *dom)
 661 {
 662         ADS_STRUCT *ads = ad_idmap_ads;
 663
 664         if (ads != NULL) {
 665                 /* we own this ADS_STRUCT so make sure it goes away */
 666                 ads->is_mine = True;
 667                 ads_destroy( &ads );
 668                 ad_idmap_ads = NULL;
 669         }
 670
 671         TALLOC_FREE( ad_schema );
 672
 673         return NT_STATUS_OK;
 674 }
 675
 676 /*
 677  * nss_info_{sfu,sfu20,rfc2307}
 678  */
 679
 680 /************************************************************************
 681  Initialize the {sfu,sfu20,rfc2307} state
 682  ***********************************************************************/
 683
 684 static NTSTATUS nss_sfu_init( struct nss_domain_entry *e )
 685 {
 686         /* Sanity check if we have previously been called with a
 687            different schema model */
 688
 689         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 690              (ad_map_type != WB_POSIX_MAP_SFU) )
 691         {
 692                 DEBUG(0,("nss_sfu_init: Posix Map type has already been set.  "
 693                          "Mixed schema models not supported!\n"));
 694                 return NT_STATUS_NOT_SUPPORTED;
 695         }
 696
 697         ad_map_type = WB_POSIX_MAP_SFU;
 698
 699         return NT_STATUS_OK;
 700 }
 701
 702 static NTSTATUS nss_sfu20_init( struct nss_domain_entry *e )
 703 {
 704         /* Sanity check if we have previously been called with a
 705            different schema model */
 706
 707         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 708              (ad_map_type != WB_POSIX_MAP_SFU20) )
 709         {
 710                 DEBUG(0,("nss_sfu20_init: Posix Map type has already been set.  "
 711                          "Mixed schema models not supported!\n"));
 712                 return NT_STATUS_NOT_SUPPORTED;
 713         }
 714
 715         ad_map_type = WB_POSIX_MAP_SFU20;
 716
 717         return NT_STATUS_OK;
 718 }
 719
 720 static NTSTATUS nss_rfc2307_init( struct nss_domain_entry *e )
 721 {
 722         /* Sanity check if we have previously been called with a
 723            different schema model */
 724
 725         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 726              (ad_map_type != WB_POSIX_MAP_RFC2307) )
 727         {
 728                 DEBUG(0,("nss_rfc2307_init: Posix Map type has already been set.  "
 729                          "Mixed schema models not supported!\n"));
 730                 return NT_STATUS_NOT_SUPPORTED;
 731         }
 732
 733         ad_map_type = WB_POSIX_MAP_RFC2307;
 734
 735         return NT_STATUS_OK;
 736 }
 737
 738
 739 /************************************************************************
 740  ***********************************************************************/
 741 static NTSTATUS nss_ad_get_info( struct nss_domain_entry *e,
 742                                   const DOM_SID *sid,
 743                                   TALLOC_CTX *ctx,
 744                                   ADS_STRUCT *ads,
 745                                   LDAPMessage *msg,
 746                                   char **homedir,
 747                                   char **shell,
 748                                   char **gecos,
 749                                   uint32 *gid )
 750 {
 751         ADS_STRUCT *ads_internal = NULL;
 752
 753         /* Only do query if we are online */
 754         if (idmap_is_offline()) {
 755                 return NT_STATUS_FILE_IS_OFFLINE;
 756         }
 757
 758         /* We are assuming that the internal ADS_STRUCT is for the
 759            same forest as the incoming *ads pointer */
 760
 761         ads_internal = ad_idmap_cached_connection();
 762
 763         if ( !ads_internal || !ad_schema )
 764                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 765
 766         if ( !homedir || !shell || !gecos )
 767                 return NT_STATUS_INVALID_PARAMETER;
 768
 769         *homedir = ads_pull_string( ads, ctx, msg, ad_schema->posix_homedir_attr );
 770         *shell   = ads_pull_string( ads, ctx, msg, ad_schema->posix_shell_attr );
 771         *gecos   = ads_pull_string( ads, ctx, msg, ad_schema->posix_gecos_attr );
 772
 773         if ( gid ) {
 774                 if ( !ads_pull_uint32(ads, msg, ad_schema->posix_gidnumber_attr, gid ) )
 775                         *gid = (uint32)-1;
 776         }
 777
 778         return NT_STATUS_OK;
 779 }
 780
 781 /************************************************************************
 782  ***********************************************************************/
 783
 784 static NTSTATUS nss_ad_close( void )
 785 {
 786         /* nothing to do.  All memory is free()'d by the idmap close_fn() */
 787
 788         return NT_STATUS_OK;
 789 }
 790
 791 /************************************************************************
 792  Function dispatch tables for the idmap and nss plugins
 793  ***********************************************************************/
 794
 795 static struct idmap_methods ad_methods = {
 796         .init            = idmap_ad_initialize,
 797         .unixids_to_sids = idmap_ad_unixids_to_sids,
 798         .sids_to_unixids = idmap_ad_sids_to_unixids,
 799         .close_fn        = idmap_ad_close
 800 };
 801
 802 /* The SFU and RFC2307 NSS plugins share everything but the init
 803    function which sets the intended schema model to use */
 804
 805 static struct nss_info_methods nss_rfc2307_methods = {
 806         .init         = nss_rfc2307_init,
 807         .get_nss_info = nss_ad_get_info,
 808         .close_fn     = nss_ad_close
 809 };
 810
 811 static struct nss_info_methods nss_sfu_methods = {
 812         .init         = nss_sfu_init,
 813         .get_nss_info = nss_ad_get_info,
 814         .close_fn     = nss_ad_close
 815 };
 816
 817 static struct nss_info_methods nss_sfu20_methods = {
 818         .init         = nss_sfu20_init,
 819         .get_nss_info = nss_ad_get_info,
 820         .close_fn     = nss_ad_close
 821 };
 822
 823
 824
 825 /************************************************************************
 826  Initialize the plugins
 827  ***********************************************************************/
 828
 829 NTSTATUS idmap_ad_init(void)
 830 {
 831         static NTSTATUS status_idmap_ad = NT_STATUS_UNSUCCESSFUL;
 832         static NTSTATUS status_nss_rfc2307 = NT_STATUS_UNSUCCESSFUL;
 833         static NTSTATUS status_nss_sfu = NT_STATUS_UNSUCCESSFUL;
 834         static NTSTATUS status_nss_sfu20 = NT_STATUS_UNSUCCESSFUL;
 835
 836         /* Always register the AD method first in order to get the
 837            idmap_domain interface called */
 838
 839         if ( !NT_STATUS_IS_OK(status_idmap_ad) ) {
 840                 status_idmap_ad = smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
 841                                                      "ad", &ad_methods);
 842                 if ( !NT_STATUS_IS_OK(status_idmap_ad) )
 843                         return status_idmap_ad;
 844         }
 845
 846         if ( !NT_STATUS_IS_OK( status_nss_rfc2307 ) ) {
 847                 status_nss_rfc2307 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
 848                                                             "rfc2307",  &nss_rfc2307_methods );
 849                 if ( !NT_STATUS_IS_OK(status_nss_rfc2307) )
 850                         return status_nss_rfc2307;
 851         }
 852
 853         if ( !NT_STATUS_IS_OK( status_nss_sfu ) ) {
 854                 status_nss_sfu = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
 855                                                         "sfu",  &nss_sfu_methods );
 856                 if ( !NT_STATUS_IS_OK(status_nss_sfu) )
 857                         return status_nss_sfu;
 858         }
 859
 860         if ( !NT_STATUS_IS_OK( status_nss_sfu20 ) ) {
 861                 status_nss_sfu20 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
 862                                                         "sfu20",  &nss_sfu20_methods );
 863                 if ( !NT_STATUS_IS_OK(status_nss_sfu20) )
 864                         return status_nss_sfu20;
 865         }
 866
 867         return NT_STATUS_OK;
 868 }
 869