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 #include "idmap.h"
  25 #include "dbwrap.h"
  26 #include "../libcli/security/security.h"
  27
  28 #define ALLOC_CHECK(mem) do { \
  29         if (!mem) { \
  30                 d_fprintf(stderr, _("Out of memory!\n")); \
  31                 talloc_free(ctx); \
  32                 return -1; \
  33         } } while(0)
  34
  35 /***********************************************************
  36  Helper function for net_idmap_dump. Dump one entry.
  37  **********************************************************/
  38 static int net_idmap_dump_one_entry(struct db_record *rec,
  39                                     void *unused)
  40 {
  41         if (strcmp((char *)rec->key.dptr, "USER HWM") == 0) {
  42                 printf(_("USER HWM %d\n"), IVAL(rec->value.dptr,0));
  43                 return 0;
  44         }
  45
  46         if (strcmp((char *)rec->key.dptr, "GROUP HWM") == 0) {
  47                 printf(_("GROUP HWM %d\n"), IVAL(rec->value.dptr,0));
  48                 return 0;
  49         }
  50
  51         if (strncmp((char *)rec->key.dptr, "S-", 2) != 0)
  52                 return 0;
  53
  54         printf("%s %s\n", rec->value.dptr, rec->key.dptr);
  55         return 0;
  56 }
  57
  58 static const char* net_idmap_dbfile(struct net_context *c)
  59 {
  60         const char* dbfile = NULL;
  61
  62         if (c->opt_db != NULL) {
  63                 dbfile = talloc_strdup(talloc_tos(), c->opt_db);
  64                 if (dbfile == NULL) {
  65                         d_fprintf(stderr, _("Out of memory!\n"));
  66                 }
  67         } else if (strequal(lp_idmap_backend(), "tdb")) {
  68                 dbfile = state_path("winbindd_idmap.tdb");
  69                 if (dbfile == NULL) {
  70                         d_fprintf(stderr, _("Out of memory!\n"));
  71                 }
  72         } else if (strequal(lp_idmap_backend(), "tdb2")) {
  73                 dbfile = lp_parm_talloc_string(-1, "tdb", "idmap2.tdb", NULL);
  74                 if (dbfile == NULL) {
  75                         dbfile = talloc_asprintf(talloc_tos(), "%s/idmap2.tdb",
  76                                                  lp_private_dir());
  77                 }
  78                 if (dbfile == NULL) {
  79                         d_fprintf(stderr, _("Out of memory!\n"));
  80                 }
  81         } else {
  82                 char* backend = talloc_strdup(talloc_tos(), lp_idmap_backend());
  83                 char* args = strchr(backend, ':');
  84                 if (args != NULL) {
  85                         *args = '\0';
  86                 }
  87
  88                 d_printf(_("Sorry, 'idmap backend = %s' is currently not supported\n"),
  89                          backend);
  90
  91                 talloc_free(backend);
  92         }
  93
  94         return dbfile;
  95 }
  96
  97 /***********************************************************
  98  Dump the current idmap
  99  **********************************************************/
 100 static int net_idmap_dump(struct net_context *c, int argc, const char **argv)
 101 {
 102         struct db_context *db;
 103         TALLOC_CTX *mem_ctx;
 104         const char* dbfile;
 105         int ret = -1;
 106
 107         if ( argc > 1  || c->display_usage) {
 108                 d_printf("%s\n%s",
 109                          _("Usage:"),
 110                          _("net idmap dump [[--db=]<inputfile>]\n"
 111                            "  Dump current ID mapping.\n"
 112                            "    inputfile\tTDB file to read mappings from.\n"));
 113                 return c->display_usage?0:-1;
 114         }
 115
 116         mem_ctx = talloc_stackframe();
 117
 118         dbfile = (argc > 0) ? argv[0] : net_idmap_dbfile(c);
 119         if (dbfile == NULL) {
 120                 goto done;
 121         }
 122         d_fprintf(stderr, _("dumping id mapping from %s\n"), dbfile);
 123
 124         db = db_open(mem_ctx, dbfile, 0, TDB_DEFAULT, O_RDONLY, 0);
 125         if (db == NULL) {
 126                 d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
 127                           argv[0], strerror(errno));
 128                 goto done;
 129         }
 130
 131         db->traverse_read(db, net_idmap_dump_one_entry, NULL);
 132         ret = 0;
 133
 134 done:
 135         talloc_free(mem_ctx);
 136         return ret;
 137 }
 138
 139 /***********************************************************
 140  Write entries from stdin to current local idmap
 141  **********************************************************/
 142
 143 static int net_idmap_store_id_mapping(struct db_context *db,
 144                                       enum id_type type,
 145                                       unsigned long idval,
 146                                       const char *sid_string)
 147 {
 148         NTSTATUS status;
 149         char *idstr = NULL;
 150
 151         switch(type) {
 152         case ID_TYPE_UID:
 153                 idstr = talloc_asprintf(talloc_tos(), "UID %lu", idval);
 154                 break;
 155         case ID_TYPE_GID:
 156                 idstr = talloc_asprintf(talloc_tos(), "GID %lu", idval);
 157                 break;
 158         default:
 159                 d_fprintf(stderr, "Invalid id mapping type: %d\n", type);
 160                 return -1;
 161         }
 162
 163         status = dbwrap_store_bystring(db, idstr,
 164                                        string_term_tdb_data(sid_string),
 165                                        TDB_REPLACE);
 166         if (!NT_STATUS_IS_OK(status)) {
 167                 d_fprintf(stderr, "Error storing ID -> SID: "
 168                          "%s\n", nt_errstr(status));
 169                 talloc_free(idstr);
 170                 return -1;
 171         }
 172         status = dbwrap_store_bystring(db, sid_string,
 173                                        string_term_tdb_data(idstr),
 174                                        TDB_REPLACE);
 175         if (!NT_STATUS_IS_OK(status)) {
 176                 d_fprintf(stderr, "Error storing SID -> ID: "
 177                          "%s\n", nt_errstr(status));
 178                 talloc_free(idstr);
 179                 return -1;
 180         }
 181
 182         return 0;
 183 }
 184
 185 static int net_idmap_restore(struct net_context *c, int argc, const char **argv)
 186 {
 187         TALLOC_CTX *mem_ctx;
 188         FILE *input = NULL;
 189         struct db_context *db;
 190         const char *dbfile = NULL;
 191         int ret = 0;
 192
 193         if (c->display_usage) {
 194                 d_printf("%s\n%s",
 195                          _("Usage:"),
 196                          _("net idmap restore [--db=<TDB>] [<inputfile>]\n"
 197                            "  Restore ID mappings from file\n"
 198                            "    TDB\tFile to store ID mappings to."
 199                            "    inputfile\tFile to load ID mappings from. If not "
 200                            "given, load data from stdin.\n"));
 201                 return 0;
 202         }
 203
 204         mem_ctx = talloc_stackframe();
 205
 206         dbfile = net_idmap_dbfile(c);
 207
 208         if (dbfile == NULL) {
 209                 ret = -1;
 210                 goto done;
 211         }
 212
 213         d_fprintf(stderr, _("restoring id mapping to %s\n"), dbfile);
 214
 215         if (argc == 1) {
 216                 input = fopen(argv[0], "r");
 217                 if (input == NULL) {
 218                         d_fprintf(stderr, _("Could not open input file (%s): %s\n"),
 219                                   argv[0], strerror(errno));
 220                         ret = -1;
 221                         goto done;
 222                 }
 223         } else {
 224                 input = stdin;
 225         }
 226
 227         db = db_open(mem_ctx, dbfile, 0, TDB_DEFAULT, O_RDWR|O_CREAT, 0644);
 228         if (db == NULL) {
 229                 d_fprintf(stderr, _("Could not open idmap db (%s): %s\n"),
 230                           dbfile, strerror(errno));
 231                 ret = -1;
 232                 goto done;
 233         }
 234
 235         if (db->transaction_start(db) != 0) {
 236                 d_fprintf(stderr, _("Failed to start transaction.\n"));
 237                 ret = -1;
 238                 goto done;
 239         }
 240
 241         while (!feof(input)) {
 242                 char line[128], sid_string[128];
 243                 int len;
 244                 unsigned long idval;
 245
 246                 if (fgets(line, 127, input) == NULL)
 247                         break;
 248
 249                 len = strlen(line);
 250
 251                 if ( (len > 0) && (line[len-1] == '\n') )
 252                         line[len-1] = '\0';
 253
 254                 if (sscanf(line, "GID %lu %128s", &idval, sid_string) == 2)
 255                 {
 256                         ret = net_idmap_store_id_mapping(db, ID_TYPE_GID,
 257                                                          idval, sid_string);
 258                         if (ret != 0) {
 259                                 break;
 260                         }
 261                 } else if (sscanf(line, "UID %lu %128s", &idval, sid_string) == 2)
 262                 {
 263                         ret = net_idmap_store_id_mapping(db, ID_TYPE_UID,
 264                                                          idval, sid_string);
 265                         if (ret != 0) {
 266                                 break;
 267                         }
 268                 } else if (sscanf(line, "USER HWM %lu", &idval) == 1) {
 269                         ret = dbwrap_store_int32(db, "USER HWM", idval);
 270                         if (ret != 0) {
 271                                 d_fprintf(stderr, _("Could not store USER HWM.\n"));
 272                                 break;
 273                         }
 274                 } else if (sscanf(line, "GROUP HWM %lu", &idval) == 1) {
 275                         ret = dbwrap_store_int32(db, "GROUP HWM", idval);
 276                         if (ret != 0) {
 277                                 d_fprintf(stderr,
 278                                           _("Could not store GROUP HWM.\n"));
 279                                 break;
 280                         }
 281                 } else {
 282                         d_fprintf(stderr, _("ignoring invalid line [%s]\n"),
 283                                   line);
 284                         continue;
 285                 }
 286         }
 287
 288         if (ret == 0) {
 289                 if(db->transaction_commit(db) != 0) {
 290                         d_fprintf(stderr, _("Failed to commit transaction.\n"));
 291                         ret = -1;
 292                 }
 293         } else {
 294                 if (db->transaction_cancel(db) != 0) {
 295                         d_fprintf(stderr, _("Failed to cancel transaction.\n"));
 296                 }
 297         }
 298
 299 done:
 300         if ((input != NULL) && (input != stdin)) {
 301                 fclose(input);
 302         }
 303
 304         talloc_free(mem_ctx);
 305         return ret;
 306 }
 307
 308 /***********************************************************
 309  Delete a SID mapping from a winbindd_idmap.tdb
 310  **********************************************************/
 311 static int net_idmap_delete(struct net_context *c, int argc, const char **argv)
 312 {
 313         d_printf("%s\n", _("Not implemented yet"));
 314         return -1;
 315 }
 316
 317 static int net_idmap_set(struct net_context *c, int argc, const char **argv)
 318 {
 319         d_printf("%s\n", _("Not implemented yet"));
 320         return -1;
 321 }
 322 static bool idmap_store_secret(const char *backend,
 323                                const char *domain,
 324                                const char *identity,
 325                                const char *secret)
 326 {
 327         char *tmp;
 328         int r;
 329         bool ret;
 330
 331         r = asprintf(&tmp, "IDMAP_%s_%s", backend, domain);
 332
 333         if (r < 0) return false;
 334
 335         strupper_m(tmp); /* make sure the key is case insensitive */
 336         ret = secrets_store_generic(tmp, identity, secret);
 337
 338         free(tmp);
 339         return ret;
 340 }
 341
 342
 343 static int net_idmap_secret(struct net_context *c, int argc, const char **argv)
 344 {
 345         TALLOC_CTX *ctx;
 346         const char *secret;
 347         const char *dn;
 348         char *domain;
 349         char *backend;
 350         char *opt = NULL;
 351         bool ret;
 352
 353         if (argc != 2 || c->display_usage) {
 354                 d_printf("%s\n%s",
 355                          _("Usage:\n"),
 356                          _("net idmap secret <DOMAIN> <secret>\n"
 357                            "  Set the secret for the specified domain\n"
 358                            "    DOMAIN\tDomain to set secret for.\n"
 359                            "    secret\tNew secret to set.\n"));
 360                 return c->display_usage?0:-1;
 361         }
 362
 363         secret = argv[1];
 364
 365         ctx = talloc_new(NULL);
 366         ALLOC_CHECK(ctx);
 367
 368         domain = talloc_strdup(ctx, argv[0]);
 369         ALLOC_CHECK(domain);
 370
 371         opt = talloc_asprintf(ctx, "idmap config %s", domain);
 372         ALLOC_CHECK(opt);
 373
 374         backend = talloc_strdup(ctx, lp_parm_const_string(-1, opt, "backend", "tdb"));
 375         ALLOC_CHECK(backend);
 376
 377         if ( ( ! backend) || ( ! strequal(backend, "ldap"))) {
 378                 d_fprintf(stderr,
 379                           _("The only currently supported backend is LDAP\n"));
 380                 talloc_free(ctx);
 381                 return -1;
 382         }
 383
 384         dn = lp_parm_const_string(-1, opt, "ldap_user_dn", NULL);
 385         if ( ! dn) {
 386                 d_fprintf(stderr,
 387                           _("Missing ldap_user_dn option for domain %s\n"),
 388                           domain);
 389                 talloc_free(ctx);
 390                 return -1;
 391         }
 392
 393         ret = idmap_store_secret("ldap", domain, dn, secret);
 394
 395         if ( ! ret) {
 396                 d_fprintf(stderr, _("Failed to store secret\n"));
 397                 talloc_free(ctx);
 398                 return -1;
 399         }
 400
 401         d_printf(_("Secret stored\n"));
 402         return 0;
 403 }
 404
 405 static int net_idmap_aclmapset(struct net_context *c, int argc, const char **argv)
 406 {
 407         TALLOC_CTX *mem_ctx;
 408         int result = -1;
 409         struct dom_sid src_sid, dst_sid;
 410         char *src, *dst;
 411         struct db_context *db;
 412         struct db_record *rec;
 413         NTSTATUS status;
 414
 415         if (argc != 3 || c->display_usage) {
 416                 d_fprintf(stderr, "%s net idmap aclmapset <tdb> "
 417                           "<src-sid> <dst-sid>\n", _("Usage:"));
 418                 return -1;
 419         }
 420
 421         if (!(mem_ctx = talloc_init("net idmap aclmapset"))) {
 422                 d_fprintf(stderr, _("talloc_init failed\n"));
 423                 return -1;
 424         }
 425
 426         if (!(db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT,
 427                            O_RDWR|O_CREAT, 0600))) {
 428                 d_fprintf(stderr, _("db_open failed: %s\n"), strerror(errno));
 429                 goto fail;
 430         }
 431
 432         if (!string_to_sid(&src_sid, argv[1])) {
 433                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[1]);
 434                 goto fail;
 435         }
 436
 437         if (!string_to_sid(&dst_sid, argv[2])) {
 438                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[2]);
 439                 goto fail;
 440         }
 441
 442         if (!(src = sid_string_talloc(mem_ctx, &src_sid))
 443             || !(dst = sid_string_talloc(mem_ctx, &dst_sid))) {
 444                 d_fprintf(stderr, _("talloc_strdup failed\n"));
 445                 goto fail;
 446         }
 447
 448         if (!(rec = db->fetch_locked(
 449                       db, mem_ctx, string_term_tdb_data(src)))) {
 450                 d_fprintf(stderr, _("could not fetch db record\n"));
 451                 goto fail;
 452         }
 453
 454         status = rec->store(rec, string_term_tdb_data(dst), 0);
 455         TALLOC_FREE(rec);
 456
 457         if (!NT_STATUS_IS_OK(status)) {
 458                 d_fprintf(stderr, _("could not store record: %s\n"),
 459                           nt_errstr(status));
 460                 goto fail;
 461         }
 462
 463         result = 0;
 464 fail:
 465         TALLOC_FREE(mem_ctx);
 466         return result;
 467 }
 468
 469 /***********************************************************
 470  Look at the current idmap
 471  **********************************************************/
 472 int net_idmap(struct net_context *c, int argc, const char **argv)
 473 {
 474         struct functable func[] = {
 475                 {
 476                         "dump",
 477                         net_idmap_dump,
 478                         NET_TRANSPORT_LOCAL,
 479                         N_("Dump the current ID mappings"),
 480                         N_("net idmap dump\n"
 481                            "  Dump the current ID mappings")
 482                 },
 483                 {
 484                         "restore",
 485                         net_idmap_restore,
 486                         NET_TRANSPORT_LOCAL,
 487                         N_("Restore entries from stdin"),
 488                         N_("net idmap restore\n"
 489                            "  Restore entries from stdin")
 490                 },
 491                 {
 492                         "setmap",
 493                         net_idmap_set,
 494                         NET_TRANSPORT_LOCAL,
 495                         N_("Not implemented yet"),
 496                         N_("net idmap setmap\n"
 497                            "  Not implemented yet")
 498                 },
 499                 {
 500                         "delete",
 501                         net_idmap_delete,
 502                         NET_TRANSPORT_LOCAL,
 503                         N_("Not implemented yet"),
 504                         N_("net idmap delete\n"
 505                            "  Not implemented yet")
 506                 },
 507                 {
 508                         "secret",
 509                         net_idmap_secret,
 510                         NET_TRANSPORT_LOCAL,
 511                         N_("Set secret for specified domain"),
 512                         N_("net idmap secret <DOMAIN> <secret>\n"
 513                            "  Set secret for specified domain")
 514                 },
 515                 {
 516                         "aclmapset",
 517                         net_idmap_aclmapset,
 518                         NET_TRANSPORT_LOCAL,
 519                         N_("Set acl map"),
 520                         N_("net idmap aclmapset\n"
 521                            "  Set acl map")
 522                 },
 523                 {NULL, NULL, 0, NULL, NULL}
 524         };
 525
 526         return net_run_function(c, argc, argv, "net idmap", func);
 527 }
 528
 529