source/nsswitch/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 2 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, write to the Free Software
  25  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  26  */
  27
  28 #include "includes.h"
  29
  30 #undef DBGC_CLASS
  31 #define DBGC_CLASS DBGC_IDMAP
  32
  33 #define WINBIND_CCACHE_NAME "MEMORY:winbind_ccache"
  34
  35 #define IDMAP_AD_MAX_IDS 30
  36 #define CHECK_ALLOC_DONE(mem) do { \
  37      if (!mem) { \
  38            DEBUG(0, ("Out of memory!\n")); \
  39            ret = NT_STATUS_NO_MEMORY; \
  40            goto done; \
  41       } \
  42 } while (0)
  43
  44 struct idmap_ad_context {
  45         uint32_t filter_low_id;
  46         uint32_t filter_high_id;
  47 };
  48
  49 NTSTATUS init_module(void);
  50
  51 static ADS_STRUCT *ad_idmap_ads = NULL;
  52 static struct posix_schema *ad_schema = NULL;
  53 static enum wb_posix_mapping ad_map_type = WB_POSIX_MAP_UNKNOWN;
  54
  55 /************************************************************************
  56  ***********************************************************************/
  57
  58 static ADS_STRUCT *ad_idmap_cached_connection_internal(void)
  59 {
  60         ADS_STRUCT *ads;
  61         ADS_STATUS status;
  62         BOOL local = False;
  63         fstring dc_name;
  64         struct in_addr dc_ip;
  65
  66         if (ad_idmap_ads != NULL) {
  67
  68                 time_t expire;
  69                 time_t now = time(NULL);
  70
  71                 ads = ad_idmap_ads;
  72
  73                 expire = MIN(ads->auth.tgt_expire, ads->auth.tgs_expire);
  74
  75                 /* check for a valid structure */
  76                 DEBUG(7, ("Current tickets expire in %d seconds (at %d, time is now %d)\n",
  77                           (uint32)expire-(uint32)now, (uint32) expire, (uint32) now));
  78
  79                 if ( ads->config.realm && (expire > time(NULL))) {
  80                         return ads;
  81                 } else {
  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
  92         if (!local) {
  93                 /* we don't want this to affect the users ccache */
  94                 setenv("KRB5CCNAME", WINBIND_CCACHE_NAME, 1);
  95         }
  96
  97         if ( (ads = ads_init(lp_realm(), lp_workgroup(), NULL)) == NULL ) {
  98                 DEBUG(1,("ads_init failed\n"));
  99                 return NULL;
 100         }
 101
 102         /* the machine acct password might have change - fetch it every 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_RFC2307) )
 147         {
 148                 ADS_STATUS schema_status;
 149
 150                 schema_status = ads_check_posix_schema_mapping( NULL, ads, ad_map_type, &ad_schema);
 151                 if ( !ADS_ERR_OK(schema_status) ) {
 152                         DEBUG(2,("ad_idmap_cached_connection: Failed to obtain schema details!\n"));
 153                         return NULL;
 154                 }
 155         }
 156
 157         return ads;
 158 }
 159
 160 /************************************************************************
 161  ***********************************************************************/
 162
 163 static NTSTATUS idmap_ad_initialize(struct idmap_domain *dom)
 164 {
 165         struct idmap_ad_context *ctx;
 166         char *config_option;
 167         const char *range = NULL;
 168         const char *schema_mode = NULL;
 169
 170         if ( (ctx = TALLOC_ZERO_P(dom, struct idmap_ad_context)) == NULL ) {
 171                 DEBUG(0, ("Out of memory!\n"));
 172                 return NT_STATUS_NO_MEMORY;
 173         }
 174
 175         if ( (config_option = talloc_asprintf(ctx, "idmap config %s", dom->name)) == NULL ) {
 176                 DEBUG(0, ("Out of memory!\n"));
 177                 talloc_free(ctx);
 178                 return NT_STATUS_NO_MEMORY;
 179         }
 180
 181         /* load ranges */
 182         range = lp_parm_const_string(-1, config_option, "range", NULL);
 183         if (range && range[0]) {
 184                 if ((sscanf(range, "%u - %u", &ctx->filter_low_id, &ctx->filter_high_id) != 2) ||
 185                     (ctx->filter_low_id > ctx->filter_high_id)) {
 186                         DEBUG(1, ("ERROR: invalid filter range [%s]", range));
 187                         ctx->filter_low_id = 0;
 188                         ctx->filter_high_id = 0;
 189                 }
 190         }
 191
 192         /* schema mode */
 193         if ( ad_map_type == WB_POSIX_MAP_UNKNOWN )
 194                 ad_map_type = WB_POSIX_MAP_RFC2307;
 195         schema_mode = lp_parm_const_string(-1, config_option, "schema_mode", NULL);
 196         if ( schema_mode && schema_mode[0] ) {
 197                 if ( strequal(schema_mode, "sfu") )
 198                         ad_map_type = WB_POSIX_MAP_SFU;
 199                 else if ( strequal(schema_mode, "rfc2307" ) )
 200                         ad_map_type = WB_POSIX_MAP_RFC2307;
 201                 else
 202                         DEBUG(0,("idmap_ad_initialize: Unknown schema_mode (%s)\n",
 203                                  schema_mode));
 204         }
 205
 206         dom->private_data = ctx;
 207         dom->initialized = True;
 208
 209         talloc_free(config_option);
 210
 211         return NT_STATUS_OK;
 212 }
 213
 214 /************************************************************************
 215  Search up to IDMAP_AD_MAX_IDS entries in maps for a match.
 216  ***********************************************************************/
 217
 218 static struct id_map *find_map_by_id(struct id_map **maps, enum id_type type, uint32_t id)
 219 {
 220         int i;
 221
 222         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 223                 if ((maps[i]->xid.type == type) && (maps[i]->xid.id == id)) {
 224                         return maps[i];
 225                 }
 226         }
 227
 228         return NULL;
 229 }
 230
 231 /************************************************************************
 232  Search up to IDMAP_AD_MAX_IDS entries in maps for a match
 233  ***********************************************************************/
 234
 235 static struct id_map *find_map_by_sid(struct id_map **maps, DOM_SID *sid)
 236 {
 237         int i;
 238
 239         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 240                 if (sid_equal(maps[i]->sid, sid)) {
 241                         return maps[i];
 242                 }
 243         }
 244
 245         return NULL;
 246 }
 247
 248 /************************************************************************
 249  ***********************************************************************/
 250
 251 static NTSTATUS idmap_ad_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 252 {
 253         NTSTATUS ret;
 254         TALLOC_CTX *memctx;
 255         struct idmap_ad_context *ctx;
 256         ADS_STATUS rc;
 257         ADS_STRUCT *ads;
 258         const char *attrs[] = { "sAMAccountType",
 259                                 "objectSid",
 260                                 NULL, /* uidnumber */
 261                                 NULL, /* gidnumber */
 262                                 NULL };
 263         LDAPMessage *res = NULL;
 264         LDAPMessage *entry = NULL;
 265         char *filter = NULL;
 266         int idx = 0;
 267         int bidx = 0;
 268         int count;
 269         int i;
 270         char *u_filter = NULL;
 271         char *g_filter = NULL;
 272
 273         /* Only do query if we are online */
 274         if (idmap_is_offline()) {
 275                 return NT_STATUS_FILE_IS_OFFLINE;
 276         }
 277
 278         /* Initilization my have been deferred because we were offline */
 279         if ( ! dom->initialized) {
 280                 ret = idmap_ad_initialize(dom);
 281                 if ( ! NT_STATUS_IS_OK(ret)) {
 282                         return ret;
 283                 }
 284         }
 285
 286         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 287
 288         if ( (memctx = talloc_new(ctx)) == NULL ) {
 289                 DEBUG(0, ("Out of memory!\n"));
 290                 return NT_STATUS_NO_MEMORY;
 291         }
 292
 293         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 294                 DEBUG(1, ("ADS uninitialized\n"));
 295                 ret = NT_STATUS_UNSUCCESSFUL;
 296                 goto done;
 297         }
 298
 299         attrs[2] = ad_schema->posix_uidnumber_attr;
 300         attrs[3] = ad_schema->posix_gidnumber_attr;
 301
 302 again:
 303         bidx = idx;
 304         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 305                 switch (ids[idx]->xid.type) {
 306                 case ID_TYPE_UID:
 307                         if ( ! u_filter) {
 308                                 u_filter = talloc_asprintf(memctx, "(&(|"
 309                                                            "(sAMAccountType=%d)"
 310                                                            "(sAMAccountType=%d)"
 311                                                            "(sAMAccountType=%d))(|",
 312                                                            ATYPE_NORMAL_ACCOUNT,
 313                                                            ATYPE_WORKSTATION_TRUST,
 314                                                            ATYPE_INTERDOMAIN_TRUST);
 315                         }
 316                         u_filter = talloc_asprintf_append(u_filter, "(%s=%lu)",
 317                                                           ad_schema->posix_uidnumber_attr,
 318                                                           (unsigned long)ids[idx]->xid.id);
 319                         CHECK_ALLOC_DONE(u_filter);
 320                         break;
 321
 322                 case ID_TYPE_GID:
 323                         if ( ! g_filter) {
 324                                 g_filter = talloc_asprintf(memctx, "(&(|"
 325                                                            "(sAMAccountType=%d)"
 326                                                            "(sAMAccountType=%d))(|",
 327                                                            ATYPE_SECURITY_GLOBAL_GROUP,
 328                                                            ATYPE_SECURITY_LOCAL_GROUP);
 329                         }
 330                         g_filter = talloc_asprintf_append(g_filter, "(%s=%lu)",
 331                                                           ad_schema->posix_gidnumber_attr,
 332                                                           (unsigned long)ids[idx]->xid.id);
 333                         CHECK_ALLOC_DONE(g_filter);
 334                         break;
 335
 336                 default:
 337                         DEBUG(3, ("Error: mapping requested but Unknown ID type\n"));
 338                         ids[idx]->status = ID_UNKNOWN;
 339                         continue;
 340                 }
 341         }
 342         filter = talloc_asprintf(memctx, "(|");
 343         CHECK_ALLOC_DONE(filter);
 344         if ( u_filter) {
 345                 filter = talloc_asprintf_append(filter, "%s))", u_filter);
 346                 CHECK_ALLOC_DONE(filter);
 347                         TALLOC_FREE(u_filter);
 348         }
 349         if ( g_filter) {
 350                 filter = talloc_asprintf_append(filter, "%s))", g_filter);
 351                 CHECK_ALLOC_DONE(filter);
 352                 TALLOC_FREE(g_filter);
 353         }
 354         filter = talloc_asprintf_append(filter, ")");
 355         CHECK_ALLOC_DONE(filter);
 356
 357         rc = ads_search_retry(ads, &res, filter, attrs);
 358         if (!ADS_ERR_OK(rc)) {
 359                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 360                 ret = NT_STATUS_UNSUCCESSFUL;
 361                 goto done;
 362         }
 363
 364         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 365                 DEBUG(10, ("No IDs found\n"));
 366         }
 367
 368         entry = res;
 369         for (i = 0; (i < count) && entry; i++) {
 370                 DOM_SID sid;
 371                 enum id_type type;
 372                 struct id_map *map;
 373                 uint32_t id;
 374                 uint32_t atype;
 375
 376                 if (i == 0) { /* first entry */
 377                         entry = ads_first_entry(ads, entry);
 378                 } else { /* following ones */
 379                         entry = ads_next_entry(ads, entry);
 380                 }
 381
 382                 if ( !entry ) {
 383                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 384                         break;
 385                 }
 386
 387                 /* first check if the SID is present */
 388                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 389                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 390                         continue;
 391                 }
 392
 393                 /* get type */
 394                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 395                         DEBUG(1, ("could not get SAM account type\n"));
 396                         continue;
 397                 }
 398
 399                 switch (atype & 0xF0000000) {
 400                 case ATYPE_SECURITY_GLOBAL_GROUP:
 401                 case ATYPE_SECURITY_LOCAL_GROUP:
 402                         type = ID_TYPE_GID;
 403                         break;
 404                 case ATYPE_NORMAL_ACCOUNT:
 405                 case ATYPE_WORKSTATION_TRUST:
 406                 case ATYPE_INTERDOMAIN_TRUST:
 407                         type = ID_TYPE_UID;
 408                         break;
 409                 default:
 410                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 411                         continue;
 412                 }
 413
 414                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 415                                                  ad_schema->posix_uidnumber_attr :
 416                                                  ad_schema->posix_gidnumber_attr,
 417                                      &id))
 418                 {
 419                         DEBUG(1, ("Could not get unix ID\n"));
 420                         continue;
 421                 }
 422
 423                 if ((id == 0) ||
 424                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 425                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 426                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 427                                 id, ctx->filter_low_id, ctx->filter_high_id));
 428                         continue;
 429                 }
 430
 431                 map = find_map_by_id(&ids[bidx], type, id);
 432                 if (!map) {
 433                         DEBUG(2, ("WARNING: couldn't match result with requested ID\n"));
 434                         continue;
 435                 }
 436
 437                 sid_copy(map->sid, &sid);
 438
 439                 /* mapped */
 440                 map->status = ID_MAPPED;
 441
 442                 DEBUG(10, ("Mapped %s -> %lu (%d)\n",
 443                            sid_string_static(map->sid),
 444                            (unsigned long)map->xid.id,
 445                            map->xid.type));
 446         }
 447
 448         if (res) {
 449                 ads_msgfree(ads, res);
 450         }
 451
 452         if (ids[idx]) { /* still some values to map */
 453                 goto again;
 454         }
 455
 456         ret = NT_STATUS_OK;
 457
 458         /* mark all unknown/expired ones as unmapped */
 459         for (i = 0; ids[i]; i++) {
 460                 if (ids[i]->status != ID_MAPPED)
 461                         ids[i]->status = ID_UNMAPPED;
 462         }
 463
 464 done:
 465         talloc_free(memctx);
 466         return ret;
 467 }
 468
 469 /************************************************************************
 470  ***********************************************************************/
 471
 472 static NTSTATUS idmap_ad_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 473 {
 474         NTSTATUS ret;
 475         TALLOC_CTX *memctx;
 476         struct idmap_ad_context *ctx;
 477         ADS_STATUS rc;
 478         ADS_STRUCT *ads;
 479         const char *attrs[] = { "sAMAccountType",
 480                                 "objectSid",
 481                                 NULL, /* attr_uidnumber */
 482                                 NULL, /* attr_gidnumber */
 483                                 NULL };
 484         LDAPMessage *res = NULL;
 485         LDAPMessage *entry = NULL;
 486         char *filter = NULL;
 487         int idx = 0;
 488         int bidx = 0;
 489         int count;
 490         int i;
 491         char *sidstr;
 492
 493         /* Only do query if we are online */
 494         if (idmap_is_offline()) {
 495                 return NT_STATUS_FILE_IS_OFFLINE;
 496         }
 497
 498         /* Initilization my have been deferred because we were offline */
 499         if ( ! dom->initialized) {
 500                 ret = idmap_ad_initialize(dom);
 501                 if ( ! NT_STATUS_IS_OK(ret)) {
 502                         return ret;
 503                 }
 504         }
 505
 506         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 507
 508         if ( (memctx = talloc_new(ctx)) == NULL ) {
 509                 DEBUG(0, ("Out of memory!\n"));
 510                 return NT_STATUS_NO_MEMORY;
 511         }
 512
 513         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 514                 DEBUG(1, ("ADS uninitialized\n"));
 515                 ret = NT_STATUS_UNSUCCESSFUL;
 516                 goto done;
 517         }
 518
 519         attrs[2] = ad_schema->posix_uidnumber_attr;
 520         attrs[3] = ad_schema->posix_gidnumber_attr;
 521
 522 again:
 523         filter = talloc_asprintf(memctx, "(&(|"
 524                                  "(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d)" /* user account types */
 525                                  "(sAMAccountType=%d)(sAMAccountType=%d)" /* group account types */
 526                                  ")(|",
 527                                  ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
 528                                  ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP);
 529
 530         CHECK_ALLOC_DONE(filter);
 531
 532         bidx = idx;
 533         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 534
 535                 sidstr = sid_binstring(ids[idx]->sid);
 536                 filter = talloc_asprintf_append(filter, "(objectSid=%s)", sidstr);
 537
 538                 free(sidstr);
 539                 CHECK_ALLOC_DONE(filter);
 540         }
 541         filter = talloc_asprintf_append(filter, "))");
 542         CHECK_ALLOC_DONE(filter);
 543         DEBUG(10, ("Filter: [%s]\n", filter));
 544
 545         rc = ads_search_retry(ads, &res, filter, attrs);
 546         if (!ADS_ERR_OK(rc)) {
 547                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 548                 ret = NT_STATUS_UNSUCCESSFUL;
 549                 goto done;
 550         }
 551
 552         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 553                 DEBUG(10, ("No IDs found\n"));
 554         }
 555
 556         entry = res;
 557         for (i = 0; (i < count) && entry; i++) {
 558                 DOM_SID sid;
 559                 enum id_type type;
 560                 struct id_map *map;
 561                 uint32_t id;
 562                 uint32_t atype;
 563
 564                 if (i == 0) { /* first entry */
 565                         entry = ads_first_entry(ads, entry);
 566                 } else { /* following ones */
 567                         entry = ads_next_entry(ads, entry);
 568                 }
 569
 570                 if ( !entry ) {
 571                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 572                         break;
 573                 }
 574
 575                 /* first check if the SID is present */
 576                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 577                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 578                         continue;
 579                 }
 580
 581                 map = find_map_by_sid(&ids[bidx], &sid);
 582                 if (!map) {
 583                         DEBUG(2, ("WARNING: couldn't match result with requested SID\n"));
 584                         continue;
 585                 }
 586
 587                 /* get type */
 588                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 589                         DEBUG(1, ("could not get SAM account type\n"));
 590                         continue;
 591                 }
 592
 593                 switch (atype & 0xF0000000) {
 594                 case ATYPE_SECURITY_GLOBAL_GROUP:
 595                 case ATYPE_SECURITY_LOCAL_GROUP:
 596                         type = ID_TYPE_GID;
 597                         break;
 598                 case ATYPE_NORMAL_ACCOUNT:
 599                 case ATYPE_WORKSTATION_TRUST:
 600                 case ATYPE_INTERDOMAIN_TRUST:
 601                         type = ID_TYPE_UID;
 602                         break;
 603                 default:
 604                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 605                         continue;
 606                 }
 607
 608                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 609                                                  ad_schema->posix_uidnumber_attr :
 610                                                  ad_schema->posix_gidnumber_attr,
 611                                      &id))
 612                 {
 613                         DEBUG(1, ("Could not get unix ID\n"));
 614                         continue;
 615                 }
 616                 if ((id == 0) ||
 617                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 618                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 619                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 620                                 id, ctx->filter_low_id, ctx->filter_high_id));
 621                         continue;
 622                 }
 623
 624                 /* mapped */
 625                 map->xid.type = type;
 626                 map->xid.id = id;
 627                 map->status = ID_MAPPED;
 628
 629                 DEBUG(10, ("Mapped %s -> %lu (%d)\n",
 630                            sid_string_static(map->sid),
 631                            (unsigned long)map->xid.id,
 632                            map->xid.type));
 633         }
 634
 635         if (res) {
 636                 ads_msgfree(ads, res);
 637         }
 638
 639         if (ids[idx]) { /* still some values to map */
 640                 goto again;
 641         }
 642
 643         ret = NT_STATUS_OK;
 644
 645         /* mark all unknwoni/expired ones as unmapped */
 646         for (i = 0; ids[i]; i++) {
 647                 if (ids[i]->status != ID_MAPPED)
 648                         ids[i]->status = ID_UNMAPPED;
 649         }
 650
 651 done:
 652         talloc_free(memctx);
 653         return ret;
 654 }
 655
 656 /************************************************************************
 657  ***********************************************************************/
 658
 659 static NTSTATUS idmap_ad_close(struct idmap_domain *dom)
 660 {
 661         ADS_STRUCT *ads = ad_idmap_ads;
 662
 663         if (ads != NULL) {
 664                 /* we own this ADS_STRUCT so make sure it goes away */
 665                 ads->is_mine = True;
 666                 ads_destroy( &ads );
 667                 ad_idmap_ads = NULL;
 668         }
 669
 670         TALLOC_FREE( ad_schema );
 671
 672         return NT_STATUS_OK;
 673 }
 674
 675 /*
 676  * nss_info_{sfu,rfc2307}
 677  */
 678
 679 /************************************************************************
 680  Initialize the {sfu,rfc2307} state
 681  ***********************************************************************/
 682
 683 static NTSTATUS nss_sfu_init( struct nss_domain_entry *e )
 684 {
 685         /* Sanity check if we have previously been called with a
 686            different schema model */
 687
 688         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 689              (ad_map_type != WB_POSIX_MAP_SFU) )
 690         {
 691                 DEBUG(0,("nss_sfu_init: Posix Map type has already been set.  "
 692                          "Mixed schema models not supported!\n"));
 693                 return NT_STATUS_NOT_SUPPORTED;
 694         }
 695
 696         ad_map_type =  WB_POSIX_MAP_SFU;
 697
 698         return NT_STATUS_OK;
 699 }
 700
 701 static NTSTATUS nss_rfc2307_init( struct nss_domain_entry *e )
 702 {
 703         /* Sanity check if we have previously been called with a
 704            different schema model */
 705
 706         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 707              (ad_map_type != WB_POSIX_MAP_RFC2307) )
 708         {
 709                 DEBUG(0,("nss_rfc2307_init: Posix Map type has already been set.  "
 710                          "Mixed schema models not supported!\n"));
 711                 return NT_STATUS_NOT_SUPPORTED;
 712         }
 713
 714         ad_map_type =  WB_POSIX_MAP_RFC2307;
 715
 716         return NT_STATUS_OK;
 717 }
 718
 719
 720 /************************************************************************
 721  ***********************************************************************/
 722 static NTSTATUS nss_ad_get_info( struct nss_domain_entry *e,
 723                                   const DOM_SID *sid,
 724                                   TALLOC_CTX *ctx,
 725                                   ADS_STRUCT *ads,
 726                                   LDAPMessage *msg,
 727                                   char **homedir,
 728                                   char **shell,
 729                                   char **gecos,
 730                                   uint32 *gid )
 731 {
 732         ADS_STRUCT *ads_internal = NULL;
 733
 734         /* Only do query if we are online */
 735         if (idmap_is_offline()) {
 736                 return NT_STATUS_FILE_IS_OFFLINE;
 737         }
 738
 739         /* We are assuming that the internal ADS_STRUCT is for the
 740            same forest as the incoming *ads pointer */
 741
 742         ads_internal = ad_idmap_cached_connection();
 743
 744         if ( !ads_internal || !ad_schema )
 745                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 746
 747         if ( !homedir || !shell || !gecos )
 748                 return NT_STATUS_INVALID_PARAMETER;
 749
 750         *homedir = ads_pull_string( ads, ctx, msg, ad_schema->posix_homedir_attr );
 751         *shell   = ads_pull_string( ads, ctx, msg, ad_schema->posix_shell_attr );
 752         *gecos   = ads_pull_string( ads, ctx, msg, ad_schema->posix_gecos_attr );
 753
 754         if ( gid ) {
 755                 if ( !ads_pull_uint32(ads, msg, ad_schema->posix_gidnumber_attr, gid ) )
 756                         *gid = (uint32)-1;
 757         }
 758
 759         return NT_STATUS_OK;
 760 }
 761
 762 /************************************************************************
 763  ***********************************************************************/
 764
 765 static NTSTATUS nss_ad_close( void )
 766 {
 767         /* nothing to do.  All memory is free()'d by the idmap close_fn() */
 768
 769         return NT_STATUS_OK;
 770 }
 771
 772 /************************************************************************
 773  Function dispatch tables for the idmap and nss plugins
 774  ***********************************************************************/
 775
 776 static struct idmap_methods ad_methods = {
 777         .init            = idmap_ad_initialize,
 778         .unixids_to_sids = idmap_ad_unixids_to_sids,
 779         .sids_to_unixids = idmap_ad_sids_to_unixids,
 780         .close_fn        = idmap_ad_close
 781 };
 782
 783 /* The SFU and RFC2307 NSS plugins share everything but the init
 784    function which sets the intended schema model to use */
 785
 786 static struct nss_info_methods nss_rfc2307_methods = {
 787         .init         = nss_rfc2307_init,
 788         .get_nss_info = nss_ad_get_info,
 789         .close_fn     = nss_ad_close
 790 };
 791
 792 static struct nss_info_methods nss_sfu_methods = {
 793         .init         = nss_sfu_init,
 794         .get_nss_info = nss_ad_get_info,
 795         .close_fn     = nss_ad_close
 796 };
 797
 798
 799 /************************************************************************
 800  Initialize the plugins
 801  ***********************************************************************/
 802
 803 NTSTATUS idmap_ad_init(void)
 804 {
 805         static NTSTATUS status_idmap_ad = NT_STATUS_UNSUCCESSFUL;
 806         static NTSTATUS status_nss_rfc2307 = NT_STATUS_UNSUCCESSFUL;
 807         static NTSTATUS status_nss_sfu = NT_STATUS_UNSUCCESSFUL;
 808
 809         /* Always register the AD method first in order to get the
 810            idmap_domain interface called */
 811
 812         if ( !NT_STATUS_IS_OK(status_idmap_ad) ) {
 813                 status_idmap_ad = smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
 814                                                      "ad", &ad_methods);
 815                 if ( !NT_STATUS_IS_OK(status_idmap_ad) )
 816                         return status_idmap_ad;
 817         }
 818
 819         if ( !NT_STATUS_IS_OK( status_nss_rfc2307 ) ) {
 820                 status_nss_rfc2307 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
 821                                                             "rfc2307",  &nss_rfc2307_methods );
 822                 if ( !NT_STATUS_IS_OK(status_nss_rfc2307) )
 823                         return status_nss_rfc2307;
 824         }
 825
 826         if ( !NT_STATUS_IS_OK( status_nss_sfu ) ) {
 827                 status_nss_sfu = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
 828                                                         "sfu",  &nss_sfu_methods );
 829                 if ( !NT_STATUS_IS_OK(status_nss_sfu) )
 830                         return status_nss_sfu;
 831         }
 832
 833         return NT_STATUS_OK;
 834 }
 835