source3/utils/net_idmap.c

   1 /*
   2    Samba Unix/Linux SMB client library
   3    Distributed SMB/CIFS Server Management Utility
   4    Copyright (C) 2003 Andrew Bartlett (abartlet@samba.org)
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 */
  19
  20 #define FOO(x) (x)
  21 #include "includes.h"
  22 #include "utils/net.h"
  23 #include "secrets.h"
  24
  25 #define ALLOC_CHECK(mem) do { \
  26         if (!mem) { \
  27                 d_fprintf(stderr, _("Out of memory!\n")); \
  28                 talloc_free(ctx); \
  29                 return -1; \
  30         } } while(0)
  31
  32 /***********************************************************
  33  Helper function for net_idmap_dump. Dump one entry.
  34  **********************************************************/
  35 static int net_idmap_dump_one_entry(struct db_record *rec,
  36                                     void *unused)
  37 {
  38         if (strcmp((char *)rec->key.dptr, "USER HWM") == 0) {
  39                 printf(_("USER HWM %d\n"), IVAL(rec->value.dptr,0));
  40                 return 0;
  41         }
  42
  43         if (strcmp((char *)rec->key.dptr, "GROUP HWM") == 0) {
  44                 printf(_("GROUP HWM %d\n"), IVAL(rec->value.dptr,0));
  45                 return 0;
  46         }
  47
  48         if (strncmp((char *)rec->key.dptr, "S-", 2) != 0)
  49                 return 0;
  50
  51         printf("%s %s\n", rec->value.dptr, rec->key.dptr);
  52         return 0;
  53 }
  54
  55 /***********************************************************
  56  Dump the current idmap
  57  **********************************************************/
  58 static int net_idmap_dump(struct net_context *c, int argc, const char **argv)
  59 {
  60         struct db_context *db;
  61         TALLOC_CTX *mem_ctx;
  62
  63         if ( argc != 1  || c->display_usage) {
  64                 d_printf("%s\n%s",
  65                          _("Usage:"),
  66                          _("net idmap dump <inputfile>\n"
  67                            "  Dump current ID mapping.\n"
  68                            "    inputfile\tTDB file to read mappings from.\n"));
  69                 return c->display_usage?0:-1;
  70         }
  71
  72         mem_ctx = talloc_stackframe();
  73
  74         db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT, O_RDONLY, 0);
  75         if (db == NULL) {
  76                 d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
  77                           argv[0], strerror(errno));
  78                 talloc_free(mem_ctx);
  79                 return -1;
  80         }
  81
  82         db->traverse_read(db, net_idmap_dump_one_entry, NULL);
  83
  84         talloc_free(mem_ctx);
  85
  86         return 0;
  87 }
  88
  89 /***********************************************************
  90  Write entries from stdin to current local idmap
  91  **********************************************************/
  92
  93 static int net_idmap_store_id_mapping(struct db_context *db,
  94                                       enum id_type type,
  95                                       unsigned long idval,
  96                                       const char *sid_string)
  97 {
  98         NTSTATUS status;
  99         char *idstr = NULL;
 100
 101         switch(type) {
 102         case ID_TYPE_UID:
 103                 idstr = talloc_asprintf(talloc_tos(), "UID %lu", idval);
 104                 break;
 105         case ID_TYPE_GID:
 106                 idstr = talloc_asprintf(talloc_tos(), "GID %lu", idval);
 107                 break;
 108         default:
 109                 d_fprintf(stderr, "Invalid id mapping type: %d\n", type);
 110                 return -1;
 111         }
 112
 113         status = dbwrap_store_bystring(db, idstr,
 114                                        string_term_tdb_data(sid_string),
 115                                        TDB_REPLACE);
 116         if (!NT_STATUS_IS_OK(status)) {
 117                 d_fprintf(stderr, "Error storing ID -> SID: "
 118                          "%s\n", nt_errstr(status));
 119                 talloc_free(idstr);
 120                 return -1;
 121         }
 122         status = dbwrap_store_bystring(db, sid_string,
 123                                        string_term_tdb_data(idstr),
 124                                        TDB_REPLACE);
 125         if (!NT_STATUS_IS_OK(status)) {
 126                 d_fprintf(stderr, "Error storing SID -> ID: "
 127                          "%s\n", nt_errstr(status));
 128                 talloc_free(idstr);
 129                 return -1;
 130         }
 131
 132         return 0;
 133 }
 134
 135 static int net_idmap_restore(struct net_context *c, int argc, const char **argv)
 136 {
 137         TALLOC_CTX *mem_ctx;
 138         FILE *input = NULL;
 139         struct db_context *db;
 140         char *dbfile = NULL;
 141         int ret = 0;
 142
 143         if (c->display_usage) {
 144                 d_printf("%s\n%s",
 145                          _("Usage:"),
 146                          _("net idmap restore [<inputfile>]\n"
 147                            "  Restore ID mappings from file\n"
 148                            "    inputfile\tFile to load ID mappings from. If not "
 149                            "given, load data from stdin.\n"));
 150                 return 0;
 151         }
 152
 153         mem_ctx = talloc_stackframe();
 154
 155         if (strequal(lp_idmap_backend(), "tdb")) {
 156                 dbfile = state_path("winbindd_idmap.tdb");
 157                 if (dbfile == NULL) {
 158                         d_fprintf(stderr, _("Out of memory!\n"));
 159                         return -1;
 160                 }
 161         } else if (strequal(lp_idmap_backend(), "tdb2")) {
 162                 dbfile = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL);
 163                 if (dbfile == NULL) {
 164                         dbfile = talloc_asprintf(mem_ctx, "%s/idmap2.tdb",
 165                                                  lp_private_dir());
 166                 }
 167         } else {
 168                 char *backend, *args;
 169
 170                 backend = talloc_strdup(mem_ctx, lp_idmap_backend());
 171                 args = strchr(backend, ':');
 172                 if (args != NULL) {
 173                         *args = '\0';
 174                 }
 175
 176                 d_printf(_("Sorry, 'net idmap restore' is currently not "
 177                            "supported for idmap backend = %s.\n"
 178                            "Only tdb and tdb2 are supported.\n"),
 179                          backend);
 180
 181                 ret = -1;
 182                 goto done;
 183         }
 184
 185         d_fprintf(stderr, _("restoring id mapping to %s data base in '%s'\n"),
 186                   lp_idmap_backend(), dbfile);
 187
 188         if (argc == 1) {
 189                 input = fopen(argv[0], "r");
 190         } else {
 191                 input = stdin;
 192         }
 193
 194         db = db_open(mem_ctx, dbfile, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
 195         if (db == NULL) {
 196                 d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
 197                           dbfile, strerror(errno));
 198                 ret = -1;
 199                 goto done;
 200         }
 201
 202         if (db->transaction_start(db) != 0) {
 203                 d_fprintf(stderr, _("Failed to start transaction.\n"));
 204                 ret = -1;
 205                 goto done;
 206         }
 207
 208         while (!feof(input)) {
 209                 char line[128], sid_string[128];
 210                 int len;
 211                 unsigned long idval;
 212
 213                 if (fgets(line, 127, input) == NULL)
 214                         break;
 215
 216                 len = strlen(line);
 217
 218                 if ( (len > 0) && (line[len-1] == '\n') )
 219                         line[len-1] = '\0';
 220
 221                 if (sscanf(line, "GID %lu %128s", &idval, sid_string) == 2)
 222                 {
 223                         ret = net_idmap_store_id_mapping(db, ID_TYPE_GID,
 224                                                          idval, sid_string);
 225                         if (ret != 0) {
 226                                 break;
 227                         }
 228                 } else if (sscanf(line, "UID %lu %128s", &idval, sid_string) == 2)
 229                 {
 230                         ret = net_idmap_store_id_mapping(db, ID_TYPE_UID,
 231                                                          idval, sid_string);
 232                         if (ret != 0) {
 233                                 break;
 234                         }
 235                 } else if (sscanf(line, "USER HWM %lu", &idval) == 1) {
 236                         ret = dbwrap_store_int32(db, "USER HWM", idval);
 237                         if (ret != 0) {
 238                                 d_fprintf(stderr, _("Could not store USER HWM.\n"));
 239                                 break;
 240                         }
 241                 } else if (sscanf(line, "GROUP HWM %lu", &idval) == 1) {
 242                         ret = dbwrap_store_int32(db, "GROUP HWM", idval);
 243                         if (ret != 0) {
 244                                 d_fprintf(stderr,
 245                                           _("Could not store GROUP HWM.\n"));
 246                                 break;
 247                         }
 248                 } else {
 249                         d_fprintf(stderr, _("ignoring invalid line [%s]\n"),
 250                                   line);
 251                         continue;
 252                 }
 253         }
 254
 255         if (ret == 0) {
 256                 if(db->transaction_commit(db) != 0) {
 257                         d_fprintf(stderr, _("Failed to commit transaction.\n"));
 258                         ret = -1;
 259                 }
 260         } else {
 261                 if (db->transaction_cancel(db) != 0) {
 262                         d_fprintf(stderr, _("Failed to cancel transaction.\n"));
 263                 }
 264         }
 265
 266 done:
 267         if ((input != NULL) && (input != stdin)) {
 268                 fclose(input);
 269         }
 270
 271         talloc_free(mem_ctx);
 272         return ret;
 273 }
 274
 275 /***********************************************************
 276  Delete a SID mapping from a winbindd_idmap.tdb
 277  **********************************************************/
 278 static int net_idmap_delete(struct net_context *c, int argc, const char **argv)
 279 {
 280         d_printf("%s\n", _("Not implemented yet"));
 281         return -1;
 282 }
 283
 284 static int net_idmap_set(struct net_context *c, int argc, const char **argv)
 285 {
 286         d_printf("%s\n", _("Not implemented yet"));
 287         return -1;
 288 }
 289 bool idmap_store_secret(const char *backend, bool alloc,
 290                         const char *domain, const char *identity,
 291                         const char *secret)
 292 {
 293         char *tmp;
 294         int r;
 295         bool ret;
 296
 297         if (alloc) {
 298                 r = asprintf(&tmp, "IDMAP_ALLOC_%s", backend);
 299         } else {
 300                 r = asprintf(&tmp, "IDMAP_%s_%s", backend, domain);
 301         }
 302
 303         if (r < 0) return false;
 304
 305         strupper_m(tmp); /* make sure the key is case insensitive */
 306         ret = secrets_store_generic(tmp, identity, secret);
 307
 308         free(tmp);
 309         return ret;
 310 }
 311
 312
 313 static int net_idmap_secret(struct net_context *c, int argc, const char **argv)
 314 {
 315         TALLOC_CTX *ctx;
 316         const char *secret;
 317         const char *dn;
 318         char *domain;
 319         char *backend;
 320         char *opt = NULL;
 321         bool ret;
 322
 323         if (argc != 2 || c->display_usage) {
 324                 d_printf("%s\n%s",
 325                          _("Usage:\n"),
 326                          _("net idmap secret <DOMAIN> <secret>\n"
 327                            "  Set the secret for the specified domain\n"
 328                            "    DOMAIN\tDomain to set secret for.\n"
 329                            "    secret\tNew secret to set.\n"));
 330                 return c->display_usage?0:-1;
 331         }
 332
 333         secret = argv[1];
 334
 335         ctx = talloc_new(NULL);
 336         ALLOC_CHECK(ctx);
 337
 338         domain = talloc_strdup(ctx, argv[0]);
 339         ALLOC_CHECK(domain);
 340
 341         opt = talloc_asprintf(ctx, "idmap config %s", domain);
 342         ALLOC_CHECK(opt);
 343
 344         backend = talloc_strdup(ctx, lp_parm_const_string(-1, opt, "backend", "tdb"));
 345         ALLOC_CHECK(backend);
 346
 347         if ( ( ! backend) || ( ! strequal(backend, "ldap"))) {
 348                 d_fprintf(stderr,
 349                           _("The only currently supported backend is LDAP\n"));
 350                 talloc_free(ctx);
 351                 return -1;
 352         }
 353
 354         dn = lp_parm_const_string(-1, opt, "ldap_user_dn", NULL);
 355         if ( ! dn) {
 356                 d_fprintf(stderr,
 357                           _("Missing ldap_user_dn option for domain %s\n"),
 358                           domain);
 359                 talloc_free(ctx);
 360                 return -1;
 361         }
 362
 363         ret = idmap_store_secret("ldap", false, domain, dn, secret);
 364
 365         if ( ! ret) {
 366                 d_fprintf(stderr, _("Failed to store secret\n"));
 367                 talloc_free(ctx);
 368                 return -1;
 369         }
 370
 371         d_printf(_("Secret stored\n"));
 372         return 0;
 373 }
 374
 375 int net_help_idmap(struct net_context *c, int argc, const char **argv)
 376 {
 377         d_printf(_("net idmap dump <inputfile>\n"
 378                    "    Dump current id mapping\n"));
 379
 380         d_printf(_("net idmap restore\n"
 381                    "    Restore entries from stdin\n"));
 382
 383         /* Deliberately *not* document net idmap delete */
 384
 385         d_printf(_("net idmap secret <DOMAIN>|alloc <secret>\n"
 386                    "    Set the secret for the specified DOMAIN (or the alloc "
 387                    "module)\n"));
 388
 389         return -1;
 390 }
 391
 392 static int net_idmap_aclmapset(struct net_context *c, int argc, const char **argv)
 393 {
 394         TALLOC_CTX *mem_ctx;
 395         int result = -1;
 396         struct dom_sid src_sid, dst_sid;
 397         char *src, *dst;
 398         struct db_context *db;
 399         struct db_record *rec;
 400         NTSTATUS status;
 401
 402         if (argc != 3 || c->display_usage) {
 403                 d_fprintf(stderr, "%s net idmap aclmapset <tdb> "
 404                           "<src-sid> <dst-sid>\n", _("Usage:"));
 405                 return -1;
 406         }
 407
 408         if (!(mem_ctx = talloc_init("net idmap aclmapset"))) {
 409                 d_fprintf(stderr, _("talloc_init failed\n"));
 410                 return -1;
 411         }
 412
 413         if (!(db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT,
 414                            O_RDWR|O_CREAT, 0600))) {
 415                 d_fprintf(stderr, _("db_open failed: %s\n"), strerror(errno));
 416                 goto fail;
 417         }
 418
 419         if (!string_to_sid(&src_sid, argv[1])) {
 420                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[1]);
 421                 goto fail;
 422         }
 423
 424         if (!string_to_sid(&dst_sid, argv[2])) {
 425                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[2]);
 426                 goto fail;
 427         }
 428
 429         if (!(src = sid_string_talloc(mem_ctx, &src_sid))
 430             || !(dst = sid_string_talloc(mem_ctx, &dst_sid))) {
 431                 d_fprintf(stderr, _("talloc_strdup failed\n"));
 432                 goto fail;
 433         }
 434
 435         if (!(rec = db->fetch_locked(
 436                       db, mem_ctx, string_term_tdb_data(src)))) {
 437                 d_fprintf(stderr, _("could not fetch db record\n"));
 438                 goto fail;
 439         }
 440
 441         status = rec->store(rec, string_term_tdb_data(dst), 0);
 442         TALLOC_FREE(rec);
 443
 444         if (!NT_STATUS_IS_OK(status)) {
 445                 d_fprintf(stderr, _("could not store record: %s\n"),
 446                           nt_errstr(status));
 447                 goto fail;
 448         }
 449
 450         result = 0;
 451 fail:
 452         TALLOC_FREE(mem_ctx);
 453         return result;
 454 }
 455
 456 /***********************************************************
 457  Look at the current idmap
 458  **********************************************************/
 459 int net_idmap(struct net_context *c, int argc, const char **argv)
 460 {
 461         struct functable func[] = {
 462                 {
 463                         "dump",
 464                         net_idmap_dump,
 465                         NET_TRANSPORT_LOCAL,
 466                         N_("Dump the current ID mappings"),
 467                         N_("net idmap dump\n"
 468                            "  Dump the current ID mappings")
 469                 },
 470                 {
 471                         "restore",
 472                         net_idmap_restore,
 473                         NET_TRANSPORT_LOCAL,
 474                         N_("Restore entries from stdin"),
 475                         N_("net idmap restore\n"
 476                            "  Restore entries from stdin")
 477                 },
 478                 {
 479                         "setmap",
 480                         net_idmap_set,
 481                         NET_TRANSPORT_LOCAL,
 482                         N_("Not implemented yet"),
 483                         N_("net idmap setmap\n"
 484                            "  Not implemented yet")
 485                 },
 486                 {
 487                         "delete",
 488                         net_idmap_delete,
 489                         NET_TRANSPORT_LOCAL,
 490                         N_("Not implemented yet"),
 491                         N_("net idmap delete\n"
 492                            "  Not implemented yet")
 493                 },
 494                 {
 495                         "secret",
 496                         net_idmap_secret,
 497                         NET_TRANSPORT_LOCAL,
 498                         N_("Set secret for specified domain"),
 499                         N_("net idmap secret {<DOMAIN>|alloc} <secret>\n"
 500                            "  Set secret for specified domain or alloc module")
 501                 },
 502                 {
 503                         "aclmapset",
 504                         net_idmap_aclmapset,
 505                         NET_TRANSPORT_LOCAL,
 506                         N_("Set acl map"),
 507                         N_("net idmap aclmapset\n"
 508                            "  Set acl map")
 509                 },
 510                 {NULL, NULL, 0, NULL, NULL}
 511         };
 512
 513         return net_run_function(c, argc, argv, "net idmap", func);
 514 }
 515
 516