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                 } else {
  81                         /* we own this ADS_STRUCT so make sure it goes away */
  82                         DEBUG(7,("Deleting expired krb5 credential cache\n"));
  83                         ads->is_mine = True;
  84                         ads_destroy( &ads );
  85                         ads_kdestroy(WINBIND_CCACHE_NAME);
  86                         ad_idmap_ads = NULL;
  87                         TALLOC_FREE( ad_schema );
  88                 }
  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 change - fetch it every time */
 102         SAFE_FREE(ads->auth.password);
 103         ads->auth.password = secrets_fetch_machine_password(lp_workgroup(), NULL, NULL);
 104
 105         SAFE_FREE(ads->auth.realm);
 106         ads->auth.realm = SMB_STRDUP(lp_realm());
 107
 108         /* setup server affinity */
 109
 110         get_dc_name( NULL, ads->auth.realm, dc_name, &dc_ip );
 111
 112         status = ads_connect(ads);
 113         if (!ADS_ERR_OK(status)) {
 114                 DEBUG(1, ("ad_idmap_init: failed to connect to AD\n"));
 115                 ads_destroy(&ads);
 116                 return NULL;
 117         }
 118
 119         ads->is_mine = False;
 120
 121         ad_idmap_ads = ads;
 122
 123         return ads;
 124 }
 125
 126 /************************************************************************
 127  ***********************************************************************/
 128
 129 static ADS_STRUCT *ad_idmap_cached_connection(void)
 130 {
 131         ADS_STRUCT *ads = ad_idmap_cached_connection_internal();
 132
 133         if ( !ads )
 134                 return NULL;
 135
 136         /* if we have a valid ADS_STRUCT and the schema model is
 137            defined, then we can return here. */
 138
 139         if ( ad_schema )
 140                 return ads;
 141
 142         /* Otherwise, set the schema model */
 143
 144         if ( (ad_map_type ==  WB_POSIX_MAP_SFU) ||
 145              (ad_map_type ==  WB_POSIX_MAP_SFU20) ||
 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                                     const char *params)
 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
 211         talloc_free(config_option);
 212
 213         return NT_STATUS_OK;
 214 }
 215
 216 /************************************************************************
 217  Search up to IDMAP_AD_MAX_IDS entries in maps for a match.
 218  ***********************************************************************/
 219
 220 static struct id_map *find_map_by_id(struct id_map **maps, enum id_type type, uint32_t id)
 221 {
 222         int i;
 223
 224         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 225                 if ((maps[i]->xid.type == type) && (maps[i]->xid.id == id)) {
 226                         return maps[i];
 227                 }
 228         }
 229
 230         return NULL;
 231 }
 232
 233 /************************************************************************
 234  Search up to IDMAP_AD_MAX_IDS entries in maps for a match
 235  ***********************************************************************/
 236
 237 static struct id_map *find_map_by_sid(struct id_map **maps, DOM_SID *sid)
 238 {
 239         int i;
 240
 241         for (i = 0; maps[i] && i<IDMAP_AD_MAX_IDS; i++) {
 242                 if (sid_equal(maps[i]->sid, sid)) {
 243                         return maps[i];
 244                 }
 245         }
 246
 247         return NULL;
 248 }
 249
 250 /************************************************************************
 251  ***********************************************************************/
 252
 253 static NTSTATUS idmap_ad_unixids_to_sids(struct idmap_domain *dom, struct id_map **ids)
 254 {
 255         NTSTATUS ret;
 256         TALLOC_CTX *memctx;
 257         struct idmap_ad_context *ctx;
 258         ADS_STATUS rc;
 259         ADS_STRUCT *ads;
 260         const char *attrs[] = { "sAMAccountType",
 261                                 "objectSid",
 262                                 NULL, /* uidnumber */
 263                                 NULL, /* gidnumber */
 264                                 NULL };
 265         LDAPMessage *res = NULL;
 266         LDAPMessage *entry = NULL;
 267         char *filter = NULL;
 268         int idx = 0;
 269         int bidx = 0;
 270         int count;
 271         int i;
 272         char *u_filter = NULL;
 273         char *g_filter = NULL;
 274
 275         /* Only do query if we are online */
 276         if (idmap_is_offline()) {
 277                 return NT_STATUS_FILE_IS_OFFLINE;
 278         }
 279
 280         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 281
 282         if ( (memctx = talloc_new(ctx)) == NULL ) {
 283                 DEBUG(0, ("Out of memory!\n"));
 284                 return NT_STATUS_NO_MEMORY;
 285         }
 286
 287         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 288                 DEBUG(1, ("ADS uninitialized\n"));
 289                 ret = NT_STATUS_UNSUCCESSFUL;
 290                 goto done;
 291         }
 292
 293         attrs[2] = ad_schema->posix_uidnumber_attr;
 294         attrs[3] = ad_schema->posix_gidnumber_attr;
 295
 296 again:
 297         bidx = idx;
 298         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 299                 switch (ids[idx]->xid.type) {
 300                 case ID_TYPE_UID:
 301                         if ( ! u_filter) {
 302                                 u_filter = talloc_asprintf(memctx, "(&(|"
 303                                                            "(sAMAccountType=%d)"
 304                                                            "(sAMAccountType=%d)"
 305                                                            "(sAMAccountType=%d))(|",
 306                                                            ATYPE_NORMAL_ACCOUNT,
 307                                                            ATYPE_WORKSTATION_TRUST,
 308                                                            ATYPE_INTERDOMAIN_TRUST);
 309                         }
 310                         u_filter = talloc_asprintf_append_buffer(u_filter, "(%s=%lu)",
 311                                                           ad_schema->posix_uidnumber_attr,
 312                                                           (unsigned long)ids[idx]->xid.id);
 313                         CHECK_ALLOC_DONE(u_filter);
 314                         break;
 315
 316                 case ID_TYPE_GID:
 317                         if ( ! g_filter) {
 318                                 g_filter = talloc_asprintf(memctx, "(&(|"
 319                                                            "(sAMAccountType=%d)"
 320                                                            "(sAMAccountType=%d))(|",
 321                                                            ATYPE_SECURITY_GLOBAL_GROUP,
 322                                                            ATYPE_SECURITY_LOCAL_GROUP);
 323                         }
 324                         g_filter = talloc_asprintf_append_buffer(g_filter, "(%s=%lu)",
 325                                                           ad_schema->posix_gidnumber_attr,
 326                                                           (unsigned long)ids[idx]->xid.id);
 327                         CHECK_ALLOC_DONE(g_filter);
 328                         break;
 329
 330                 default:
 331                         DEBUG(3, ("Error: mapping requested but Unknown ID type\n"));
 332                         ids[idx]->status = ID_UNKNOWN;
 333                         continue;
 334                 }
 335         }
 336         filter = talloc_asprintf(memctx, "(|");
 337         CHECK_ALLOC_DONE(filter);
 338         if ( u_filter) {
 339                 filter = talloc_asprintf_append_buffer(filter, "%s))", u_filter);
 340                 CHECK_ALLOC_DONE(filter);
 341                         TALLOC_FREE(u_filter);
 342         }
 343         if ( g_filter) {
 344                 filter = talloc_asprintf_append_buffer(filter, "%s))", g_filter);
 345                 CHECK_ALLOC_DONE(filter);
 346                 TALLOC_FREE(g_filter);
 347         }
 348         filter = talloc_asprintf_append_buffer(filter, ")");
 349         CHECK_ALLOC_DONE(filter);
 350
 351         rc = ads_search_retry(ads, &res, filter, attrs);
 352         if (!ADS_ERR_OK(rc)) {
 353                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 354                 ret = NT_STATUS_UNSUCCESSFUL;
 355                 goto done;
 356         }
 357
 358         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 359                 DEBUG(10, ("No IDs found\n"));
 360         }
 361
 362         entry = res;
 363         for (i = 0; (i < count) && entry; i++) {
 364                 DOM_SID sid;
 365                 enum id_type type;
 366                 struct id_map *map;
 367                 uint32_t id;
 368                 uint32_t atype;
 369
 370                 if (i == 0) { /* first entry */
 371                         entry = ads_first_entry(ads, entry);
 372                 } else { /* following ones */
 373                         entry = ads_next_entry(ads, entry);
 374                 }
 375
 376                 if ( !entry ) {
 377                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 378                         break;
 379                 }
 380
 381                 /* first check if the SID is present */
 382                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 383                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 384                         continue;
 385                 }
 386
 387                 /* get type */
 388                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 389                         DEBUG(1, ("could not get SAM account type\n"));
 390                         continue;
 391                 }
 392
 393                 switch (atype & 0xF0000000) {
 394                 case ATYPE_SECURITY_GLOBAL_GROUP:
 395                 case ATYPE_SECURITY_LOCAL_GROUP:
 396                         type = ID_TYPE_GID;
 397                         break;
 398                 case ATYPE_NORMAL_ACCOUNT:
 399                 case ATYPE_WORKSTATION_TRUST:
 400                 case ATYPE_INTERDOMAIN_TRUST:
 401                         type = ID_TYPE_UID;
 402                         break;
 403                 default:
 404                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 405                         continue;
 406                 }
 407
 408                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 409                                                  ad_schema->posix_uidnumber_attr :
 410                                                  ad_schema->posix_gidnumber_attr,
 411                                      &id))
 412                 {
 413                         DEBUG(1, ("Could not get unix ID\n"));
 414                         continue;
 415                 }
 416
 417                 if ((id == 0) ||
 418                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 419                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 420                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 421                                 id, ctx->filter_low_id, ctx->filter_high_id));
 422                         continue;
 423                 }
 424
 425                 map = find_map_by_id(&ids[bidx], type, id);
 426                 if (!map) {
 427                         DEBUG(2, ("WARNING: couldn't match result with requested ID\n"));
 428                         continue;
 429                 }
 430
 431                 sid_copy(map->sid, &sid);
 432
 433                 /* mapped */
 434                 map->status = ID_MAPPED;
 435
 436                 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
 437                            (unsigned long)map->xid.id,
 438                            map->xid.type));
 439         }
 440
 441         if (res) {
 442                 ads_msgfree(ads, res);
 443         }
 444
 445         if (ids[idx]) { /* still some values to map */
 446                 goto again;
 447         }
 448
 449         ret = NT_STATUS_OK;
 450
 451         /* mark all unknown/expired ones as unmapped */
 452         for (i = 0; ids[i]; i++) {
 453                 if (ids[i]->status != ID_MAPPED)
 454                         ids[i]->status = ID_UNMAPPED;
 455         }
 456
 457 done:
 458         talloc_free(memctx);
 459         return ret;
 460 }
 461
 462 /************************************************************************
 463  ***********************************************************************/
 464
 465 static NTSTATUS idmap_ad_sids_to_unixids(struct idmap_domain *dom, struct id_map **ids)
 466 {
 467         NTSTATUS ret;
 468         TALLOC_CTX *memctx;
 469         struct idmap_ad_context *ctx;
 470         ADS_STATUS rc;
 471         ADS_STRUCT *ads;
 472         const char *attrs[] = { "sAMAccountType",
 473                                 "objectSid",
 474                                 NULL, /* attr_uidnumber */
 475                                 NULL, /* attr_gidnumber */
 476                                 NULL };
 477         LDAPMessage *res = NULL;
 478         LDAPMessage *entry = NULL;
 479         char *filter = NULL;
 480         int idx = 0;
 481         int bidx = 0;
 482         int count;
 483         int i;
 484         char *sidstr;
 485
 486         /* Only do query if we are online */
 487         if (idmap_is_offline()) {
 488                 return NT_STATUS_FILE_IS_OFFLINE;
 489         }
 490
 491         ctx = talloc_get_type(dom->private_data, struct idmap_ad_context);
 492
 493         if ( (memctx = talloc_new(ctx)) == NULL ) {
 494                 DEBUG(0, ("Out of memory!\n"));
 495                 return NT_STATUS_NO_MEMORY;
 496         }
 497
 498         if ( (ads = ad_idmap_cached_connection()) == NULL ) {
 499                 DEBUG(1, ("ADS uninitialized\n"));
 500                 ret = NT_STATUS_UNSUCCESSFUL;
 501                 goto done;
 502         }
 503
 504         attrs[2] = ad_schema->posix_uidnumber_attr;
 505         attrs[3] = ad_schema->posix_gidnumber_attr;
 506
 507 again:
 508         filter = talloc_asprintf(memctx, "(&(|"
 509                                  "(sAMAccountType=%d)(sAMAccountType=%d)(sAMAccountType=%d)" /* user account types */
 510                                  "(sAMAccountType=%d)(sAMAccountType=%d)" /* group account types */
 511                                  ")(|",
 512                                  ATYPE_NORMAL_ACCOUNT, ATYPE_WORKSTATION_TRUST, ATYPE_INTERDOMAIN_TRUST,
 513                                  ATYPE_SECURITY_GLOBAL_GROUP, ATYPE_SECURITY_LOCAL_GROUP);
 514
 515         CHECK_ALLOC_DONE(filter);
 516
 517         bidx = idx;
 518         for (i = 0; (i < IDMAP_AD_MAX_IDS) && ids[idx]; i++, idx++) {
 519
 520                 sidstr = sid_binstring(ids[idx]->sid);
 521                 filter = talloc_asprintf_append_buffer(filter, "(objectSid=%s)", sidstr);
 522
 523                 free(sidstr);
 524                 CHECK_ALLOC_DONE(filter);
 525         }
 526         filter = talloc_asprintf_append_buffer(filter, "))");
 527         CHECK_ALLOC_DONE(filter);
 528         DEBUG(10, ("Filter: [%s]\n", filter));
 529
 530         rc = ads_search_retry(ads, &res, filter, attrs);
 531         if (!ADS_ERR_OK(rc)) {
 532                 DEBUG(1, ("ERROR: ads search returned: %s\n", ads_errstr(rc)));
 533                 ret = NT_STATUS_UNSUCCESSFUL;
 534                 goto done;
 535         }
 536
 537         if ( (count = ads_count_replies(ads, res)) == 0 ) {
 538                 DEBUG(10, ("No IDs found\n"));
 539         }
 540
 541         entry = res;
 542         for (i = 0; (i < count) && entry; i++) {
 543                 DOM_SID sid;
 544                 enum id_type type;
 545                 struct id_map *map;
 546                 uint32_t id;
 547                 uint32_t atype;
 548
 549                 if (i == 0) { /* first entry */
 550                         entry = ads_first_entry(ads, entry);
 551                 } else { /* following ones */
 552                         entry = ads_next_entry(ads, entry);
 553                 }
 554
 555                 if ( !entry ) {
 556                         DEBUG(2, ("ERROR: Unable to fetch ldap entries from results\n"));
 557                         break;
 558                 }
 559
 560                 /* first check if the SID is present */
 561                 if (!ads_pull_sid(ads, entry, "objectSid", &sid)) {
 562                         DEBUG(2, ("Could not retrieve SID from entry\n"));
 563                         continue;
 564                 }
 565
 566                 map = find_map_by_sid(&ids[bidx], &sid);
 567                 if (!map) {
 568                         DEBUG(2, ("WARNING: couldn't match result with requested SID\n"));
 569                         continue;
 570                 }
 571
 572                 /* get type */
 573                 if (!ads_pull_uint32(ads, entry, "sAMAccountType", &atype)) {
 574                         DEBUG(1, ("could not get SAM account type\n"));
 575                         continue;
 576                 }
 577
 578                 switch (atype & 0xF0000000) {
 579                 case ATYPE_SECURITY_GLOBAL_GROUP:
 580                 case ATYPE_SECURITY_LOCAL_GROUP:
 581                         type = ID_TYPE_GID;
 582                         break;
 583                 case ATYPE_NORMAL_ACCOUNT:
 584                 case ATYPE_WORKSTATION_TRUST:
 585                 case ATYPE_INTERDOMAIN_TRUST:
 586                         type = ID_TYPE_UID;
 587                         break;
 588                 default:
 589                         DEBUG(1, ("unrecognized SAM account type %08x\n", atype));
 590                         continue;
 591                 }
 592
 593                 if (!ads_pull_uint32(ads, entry, (type==ID_TYPE_UID) ?
 594                                                  ad_schema->posix_uidnumber_attr :
 595                                                  ad_schema->posix_gidnumber_attr,
 596                                      &id))
 597                 {
 598                         DEBUG(1, ("Could not get unix ID\n"));
 599                         continue;
 600                 }
 601                 if ((id == 0) ||
 602                     (ctx->filter_low_id && (id < ctx->filter_low_id)) ||
 603                     (ctx->filter_high_id && (id > ctx->filter_high_id))) {
 604                         DEBUG(5, ("Requested id (%u) out of range (%u - %u). Filtered!\n",
 605                                 id, ctx->filter_low_id, ctx->filter_high_id));
 606                         continue;
 607                 }
 608
 609                 /* mapped */
 610                 map->xid.type = type;
 611                 map->xid.id = id;
 612                 map->status = ID_MAPPED;
 613
 614                 DEBUG(10, ("Mapped %s -> %lu (%d)\n", sid_string_dbg(map->sid),
 615                            (unsigned long)map->xid.id,
 616                            map->xid.type));
 617         }
 618
 619         if (res) {
 620                 ads_msgfree(ads, res);
 621         }
 622
 623         if (ids[idx]) { /* still some values to map */
 624                 goto again;
 625         }
 626
 627         ret = NT_STATUS_OK;
 628
 629         /* mark all unknwoni/expired ones as unmapped */
 630         for (i = 0; ids[i]; i++) {
 631                 if (ids[i]->status != ID_MAPPED)
 632                         ids[i]->status = ID_UNMAPPED;
 633         }
 634
 635 done:
 636         talloc_free(memctx);
 637         return ret;
 638 }
 639
 640 /************************************************************************
 641  ***********************************************************************/
 642
 643 static NTSTATUS idmap_ad_close(struct idmap_domain *dom)
 644 {
 645         ADS_STRUCT *ads = ad_idmap_ads;
 646
 647         if (ads != NULL) {
 648                 /* we own this ADS_STRUCT so make sure it goes away */
 649                 ads->is_mine = True;
 650                 ads_destroy( &ads );
 651                 ad_idmap_ads = NULL;
 652         }
 653
 654         TALLOC_FREE( ad_schema );
 655
 656         return NT_STATUS_OK;
 657 }
 658
 659 /*
 660  * nss_info_{sfu,sfu20,rfc2307}
 661  */
 662
 663 /************************************************************************
 664  Initialize the {sfu,sfu20,rfc2307} state
 665  ***********************************************************************/
 666
 667 static NTSTATUS nss_sfu_init( struct nss_domain_entry *e )
 668 {
 669         /* Sanity check if we have previously been called with a
 670            different schema model */
 671
 672         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 673              (ad_map_type != WB_POSIX_MAP_SFU) )
 674         {
 675                 DEBUG(0,("nss_sfu_init: Posix Map type has already been set.  "
 676                          "Mixed schema models not supported!\n"));
 677                 return NT_STATUS_NOT_SUPPORTED;
 678         }
 679
 680         ad_map_type = WB_POSIX_MAP_SFU;
 681
 682         return NT_STATUS_OK;
 683 }
 684
 685 static NTSTATUS nss_sfu20_init( struct nss_domain_entry *e )
 686 {
 687         /* Sanity check if we have previously been called with a
 688            different schema model */
 689
 690         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 691              (ad_map_type != WB_POSIX_MAP_SFU20) )
 692         {
 693                 DEBUG(0,("nss_sfu20_init: Posix Map type has already been set.  "
 694                          "Mixed schema models not supported!\n"));
 695                 return NT_STATUS_NOT_SUPPORTED;
 696         }
 697
 698         ad_map_type = WB_POSIX_MAP_SFU20;
 699
 700         return NT_STATUS_OK;
 701 }
 702
 703 static NTSTATUS nss_rfc2307_init( struct nss_domain_entry *e )
 704 {
 705         /* Sanity check if we have previously been called with a
 706            different schema model */
 707
 708         if ( (ad_map_type != WB_POSIX_MAP_UNKNOWN) &&
 709              (ad_map_type != WB_POSIX_MAP_RFC2307) )
 710         {
 711                 DEBUG(0,("nss_rfc2307_init: Posix Map type has already been set.  "
 712                          "Mixed schema models not supported!\n"));
 713                 return NT_STATUS_NOT_SUPPORTED;
 714         }
 715
 716         ad_map_type = WB_POSIX_MAP_RFC2307;
 717
 718         return NT_STATUS_OK;
 719 }
 720
 721
 722 /************************************************************************
 723  ***********************************************************************/
 724 static NTSTATUS nss_ad_get_info( struct nss_domain_entry *e,
 725                                   const DOM_SID *sid,
 726                                   TALLOC_CTX *ctx,
 727                                   ADS_STRUCT *ads,
 728                                   LDAPMessage *msg,
 729                                   char **homedir,
 730                                   char **shell,
 731                                   char **gecos,
 732                                   uint32 *gid )
 733 {
 734         ADS_STRUCT *ads_internal = NULL;
 735         const char *attrs[] = {NULL, /* attr_homedir */
 736                                NULL, /* attr_shell */
 737                                NULL, /* attr_gecos */
 738                                NULL, /* attr_gidnumber */
 739                                NULL };
 740         char *filter = NULL;
 741         LDAPMessage *msg_internal = NULL;
 742         ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 743         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 744         char *sidstr = NULL;
 745
 746         /* Only do query if we are online */
 747         if (idmap_is_offline()) {
 748                 return NT_STATUS_FILE_IS_OFFLINE;
 749         }
 750
 751         /* We are assuming that the internal ADS_STRUCT is for the
 752            same forest as the incoming *ads pointer */
 753
 754         ads_internal = ad_idmap_cached_connection();
 755
 756         if ( !ads_internal || !ad_schema ) {
 757                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 758         }
 759
 760         if (!sid || !homedir || !shell || !gecos) {
 761                 return NT_STATUS_INVALID_PARAMETER;
 762         }
 763
 764         /* See if we can use the ADS connection struct swe were given */
 765
 766         if (ads) {
 767                 *homedir = ads_pull_string( ads, ctx, msg, ad_schema->posix_homedir_attr );
 768                 *shell   = ads_pull_string( ads, ctx, msg, ad_schema->posix_shell_attr );
 769                 *gecos   = ads_pull_string( ads, ctx, msg, ad_schema->posix_gecos_attr );
 770
 771                 if (gid) {
 772                         if ( !ads_pull_uint32(ads, msg, ad_schema->posix_gidnumber_attr, gid ) )
 773                                 *gid = (uint32)-1;
 774                 }
 775
 776                 nt_status = NT_STATUS_OK;
 777                 goto done;
 778         }
 779
 780         /* Have to do our own query */
 781
 782         attrs[0] = ad_schema->posix_homedir_attr;
 783         attrs[1] = ad_schema->posix_shell_attr;
 784         attrs[2] = ad_schema->posix_gecos_attr;
 785         attrs[3] = ad_schema->posix_gidnumber_attr;
 786
 787         sidstr = sid_binstring(sid);
 788         filter = talloc_asprintf(ctx, "(objectSid=%s)", sidstr);
 789         SAFE_FREE(sidstr);
 790
 791         if (!filter) {
 792                 nt_status = NT_STATUS_NO_MEMORY;
 793                 goto done;
 794         }
 795
 796         ads_status = ads_search_retry(ads_internal, &msg_internal, filter, attrs);
 797         if (!ADS_ERR_OK(ads_status)) {
 798                 nt_status = ads_ntstatus(ads_status);
 799                 goto done;
 800         }
 801
 802         *homedir = ads_pull_string(ads_internal, ctx, msg_internal, ad_schema->posix_homedir_attr);
 803         *shell   = ads_pull_string(ads_internal, ctx, msg_internal, ad_schema->posix_shell_attr);
 804         *gecos   = ads_pull_string(ads_internal, ctx, msg_internal, ad_schema->posix_gecos_attr);
 805
 806         if (gid) {
 807                 if (!ads_pull_uint32(ads_internal, msg_internal, ad_schema->posix_gidnumber_attr, gid))
 808                         *gid = (uint32)-1;
 809         }
 810
 811         nt_status = NT_STATUS_OK;
 812
 813 done:
 814         if (msg_internal) {
 815                 ads_msgfree(ads_internal, msg_internal);
 816         }
 817
 818         return nt_status;
 819 }
 820
 821 /**********************************************************************
 822  *********************************************************************/
 823
 824 static NTSTATUS nss_ad_map_to_alias(TALLOC_CTX *mem_ctx,
 825                                     const char *domain,
 826                                     const char *name,
 827                                     char **alias)
 828 {
 829         ADS_STRUCT *ads_internal = NULL;
 830         const char *attrs[] = {NULL, /* attr_uid */
 831                                NULL };
 832         char *filter = NULL;
 833         LDAPMessage *msg = NULL;
 834         ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 835         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 836
 837         /* Check incoming parameters */
 838
 839         if ( !domain || !name || !*alias) {
 840                 nt_status = NT_STATUS_INVALID_PARAMETER;
 841                 goto done;
 842         }
 843
 844         /* Only do query if we are online */
 845
 846         if (idmap_is_offline()) {
 847                 nt_status = NT_STATUS_FILE_IS_OFFLINE;
 848                 goto done;
 849         }
 850
 851         ads_internal = ad_idmap_cached_connection();
 852
 853         if (!ads_internal || !ad_schema) {
 854                 nt_status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
 855                 goto done;
 856         }
 857
 858         attrs[0] = ad_schema->posix_uid_attr;
 859
 860         filter = talloc_asprintf(mem_ctx,
 861                                  "(sAMAccountName=%s)",
 862                                  name);
 863         if (!filter) {
 864                 nt_status = NT_STATUS_NO_MEMORY;
 865                 goto done;
 866         }
 867
 868         ads_status = ads_search_retry(ads_internal, &msg, filter, attrs);
 869         if (!ADS_ERR_OK(ads_status)) {
 870                 nt_status = ads_ntstatus(ads_status);
 871                 goto done;
 872         }
 873
 874         *alias = ads_pull_string(ads_internal, mem_ctx, msg, ad_schema->posix_uid_attr );
 875
 876         if (!*alias) {
 877                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 878         }
 879
 880         nt_status = NT_STATUS_OK;
 881
 882 done:
 883         if (filter) {
 884                 talloc_destroy(filter);
 885         }
 886         if (msg) {
 887                 ads_msgfree(ads_internal, msg);
 888         }
 889
 890         return nt_status;
 891 }
 892
 893 /**********************************************************************
 894  *********************************************************************/
 895
 896 static NTSTATUS nss_ad_map_from_alias( TALLOC_CTX *mem_ctx,
 897                                              const char *domain,
 898                                              const char *alias,
 899                                              char **name )
 900 {
 901         ADS_STRUCT *ads_internal = NULL;
 902         const char *attrs[] = {"sAMAccountName",
 903                                NULL };
 904         char *filter = NULL;
 905         LDAPMessage *msg = NULL;
 906         ADS_STATUS ads_status = ADS_ERROR_NT(NT_STATUS_UNSUCCESSFUL);
 907         NTSTATUS nt_status = NT_STATUS_UNSUCCESSFUL;
 908         char *username;
 909
 910         /* Check incoming parameters */
 911
 912         if ( !alias || !name) {
 913                 nt_status = NT_STATUS_INVALID_PARAMETER;
 914                 goto done;
 915         }
 916
 917         /* Only do query if we are online */
 918
 919         if (idmap_is_offline()) {
 920                 nt_status = NT_STATUS_FILE_IS_OFFLINE;
 921                 goto done;
 922         }
 923
 924         ads_internal = ad_idmap_cached_connection();
 925
 926         if (!ads_internal || !ad_schema) {
 927                 nt_status = NT_STATUS_OBJECT_PATH_NOT_FOUND;
 928                 goto done;
 929         }
 930
 931         filter = talloc_asprintf(mem_ctx,
 932                                  "(%s=%s)",
 933                                  ad_schema->posix_uid_attr,
 934                                  alias);
 935         if (!filter) {
 936                 nt_status = NT_STATUS_NO_MEMORY;
 937                 goto done;
 938         }
 939
 940         ads_status = ads_search_retry(ads_internal, &msg, filter, attrs);
 941         if (!ADS_ERR_OK(ads_status)) {
 942                 nt_status = ads_ntstatus(ads_status);
 943                 goto done;
 944         }
 945
 946         username = ads_pull_string(ads_internal, mem_ctx, msg,
 947                                    "sAMAccountName");
 948         if (!username) {
 949                 return NT_STATUS_OBJECT_NAME_NOT_FOUND;
 950         }
 951
 952         *name = talloc_asprintf(mem_ctx, "%s\\%s",
 953                                 lp_workgroup(),
 954                                 username);
 955         if (!*name) {
 956                 nt_status = NT_STATUS_NO_MEMORY;
 957                 goto done;
 958         }
 959
 960         nt_status = NT_STATUS_OK;
 961
 962 done:
 963         if (filter) {
 964                 talloc_destroy(filter);
 965         }
 966         if (msg) {
 967                 ads_msgfree(ads_internal, msg);
 968         }
 969
 970         return nt_status;
 971 }
 972
 973
 974 /************************************************************************
 975  ***********************************************************************/
 976
 977 static NTSTATUS nss_ad_close( void )
 978 {
 979         /* nothing to do.  All memory is free()'d by the idmap close_fn() */
 980
 981         return NT_STATUS_OK;
 982 }
 983
 984 /************************************************************************
 985  Function dispatch tables for the idmap and nss plugins
 986  ***********************************************************************/
 987
 988 static struct idmap_methods ad_methods = {
 989         .init            = idmap_ad_initialize,
 990         .unixids_to_sids = idmap_ad_unixids_to_sids,
 991         .sids_to_unixids = idmap_ad_sids_to_unixids,
 992         .close_fn        = idmap_ad_close
 993 };
 994
 995 /* The SFU and RFC2307 NSS plugins share everything but the init
 996    function which sets the intended schema model to use */
 997
 998 static struct nss_info_methods nss_rfc2307_methods = {
 999         .init           = nss_rfc2307_init,
1000         .get_nss_info   = nss_ad_get_info,
1001         .map_to_alias   = nss_ad_map_to_alias,
1002         .map_from_alias = nss_ad_map_from_alias,
1003         .close_fn       = nss_ad_close
1004 };
1005
1006 static struct nss_info_methods nss_sfu_methods = {
1007         .init           = nss_sfu_init,
1008         .get_nss_info   = nss_ad_get_info,
1009         .map_to_alias   = nss_ad_map_to_alias,
1010         .map_from_alias = nss_ad_map_from_alias,
1011         .close_fn       = nss_ad_close
1012 };
1013
1014 static struct nss_info_methods nss_sfu20_methods = {
1015         .init           = nss_sfu20_init,
1016         .get_nss_info   = nss_ad_get_info,
1017         .map_to_alias   = nss_ad_map_to_alias,
1018         .map_from_alias = nss_ad_map_from_alias,
1019         .close_fn       = nss_ad_close
1020 };
1021
1022
1023
1024 /************************************************************************
1025  Initialize the plugins
1026  ***********************************************************************/
1027
1028 NTSTATUS idmap_ad_init(void)
1029 {
1030         static NTSTATUS status_idmap_ad = NT_STATUS_UNSUCCESSFUL;
1031         static NTSTATUS status_nss_rfc2307 = NT_STATUS_UNSUCCESSFUL;
1032         static NTSTATUS status_nss_sfu = NT_STATUS_UNSUCCESSFUL;
1033         static NTSTATUS status_nss_sfu20 = NT_STATUS_UNSUCCESSFUL;
1034
1035         /* Always register the AD method first in order to get the
1036            idmap_domain interface called */
1037
1038         if ( !NT_STATUS_IS_OK(status_idmap_ad) ) {
1039                 status_idmap_ad = smb_register_idmap(SMB_IDMAP_INTERFACE_VERSION,
1040                                                      "ad", &ad_methods);
1041                 if ( !NT_STATUS_IS_OK(status_idmap_ad) )
1042                         return status_idmap_ad;
1043         }
1044
1045         if ( !NT_STATUS_IS_OK( status_nss_rfc2307 ) ) {
1046                 status_nss_rfc2307 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1047                                                             "rfc2307",  &nss_rfc2307_methods );
1048                 if ( !NT_STATUS_IS_OK(status_nss_rfc2307) )
1049                         return status_nss_rfc2307;
1050         }
1051
1052         if ( !NT_STATUS_IS_OK( status_nss_sfu ) ) {
1053                 status_nss_sfu = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1054                                                         "sfu",  &nss_sfu_methods );
1055                 if ( !NT_STATUS_IS_OK(status_nss_sfu) )
1056                         return status_nss_sfu;
1057         }
1058
1059         if ( !NT_STATUS_IS_OK( status_nss_sfu20 ) ) {
1060                 status_nss_sfu20 = smb_register_idmap_nss(SMB_NSS_INFO_INTERFACE_VERSION,
1061                                                         "sfu20",  &nss_sfu20_methods );
1062                 if ( !NT_STATUS_IS_OK(status_nss_sfu20) )
1063                         return status_nss_sfu20;
1064         }
1065
1066         return NT_STATUS_OK;
1067 }
1068