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_restore(struct net_context *c, int argc, const char **argv)
  94 {
  95         TALLOC_CTX *ctx;
  96         FILE *input;
  97
  98         if (c->display_usage) {
  99                 d_printf("%s\n%s",
 100                          _("Usage:"),
 101                          _("net idmap restore [inputfile]\n"
 102                            "  Restore ID mappings from file\n"
 103                            "    inputfile\tFile to load ID mappings from. If "
 104                            "not given, load data from stdin.\n"));
 105                 return 0;
 106         }
 107
 108         if (! winbind_ping()) {
 109                 d_fprintf(stderr,
 110                           _("To use net idmap Winbindd must be running.\n"));
 111                 return -1;
 112         }
 113
 114         ctx = talloc_new(NULL);
 115         ALLOC_CHECK(ctx);
 116
 117         if (argc == 1) {
 118                 input = fopen(argv[0], "r");
 119         } else {
 120                 input = stdin;
 121         }
 122
 123         while (!feof(input)) {
 124                 char line[128], sid_string[128];
 125                 int len;
 126                 struct wbcDomainSid sid;
 127                 enum id_type type = ID_TYPE_NOT_SPECIFIED;
 128                 unsigned long idval;
 129                 wbcErr wbc_status;
 130
 131                 if (fgets(line, 127, input) == NULL)
 132                         break;
 133
 134                 len = strlen(line);
 135
 136                 if ( (len > 0) && (line[len-1] == '\n') )
 137                         line[len-1] = '\0';
 138
 139                 if (sscanf(line, "GID %lu %128s", &idval, sid_string) == 2) {
 140                         type = ID_TYPE_GID;
 141                 } else if (sscanf(line, "UID %lu %128s", &idval, sid_string) == 2) {
 142                         type = ID_TYPE_UID;
 143                 } else if (sscanf(line, "USER HWM %lu", &idval) == 1) {
 144                         /* set uid hwm */
 145                         wbc_status = wbcSetUidHwm(idval);
 146                         if (!WBC_ERROR_IS_OK(wbc_status)) {
 147                                 d_fprintf(stderr,
 148                                           _("Could not set USER HWM: %s\n"),
 149                                           wbcErrorString(wbc_status));
 150                         }
 151                         continue;
 152                 } else if (sscanf(line, "GROUP HWM %lu", &idval) == 1) {
 153                         /* set gid hwm */
 154                         wbc_status = wbcSetGidHwm(idval);
 155                         if (!WBC_ERROR_IS_OK(wbc_status)) {
 156                                 d_fprintf(stderr,
 157                                           _("Could not set GROUP HWM: %s\n"),
 158                                           wbcErrorString(wbc_status));
 159                         }
 160                         continue;
 161                 } else {
 162                         d_fprintf(stderr, _("ignoring invalid line [%s]\n"),
 163                                   line);
 164                         continue;
 165                 }
 166
 167                 wbc_status = wbcStringToSid(sid_string, &sid);
 168                 if (!WBC_ERROR_IS_OK(wbc_status)) {
 169                         d_fprintf(stderr, _("ignoring invalid sid [%s]: %s\n"),
 170                                   sid_string, wbcErrorString(wbc_status));
 171                         continue;
 172                 }
 173
 174                 if (type == ID_TYPE_UID) {
 175                         wbc_status = wbcSetUidMapping(idval, &sid);
 176                 } else {
 177                         wbc_status = wbcSetGidMapping(idval, &sid);
 178                 }
 179                 if (!WBC_ERROR_IS_OK(wbc_status)) {
 180                         d_fprintf(stderr,
 181                                   _("Could not set mapping of %s %lu to sid %s: %s\n"),
 182                                  (type == ID_TYPE_GID) ? "GID" : "UID",
 183                                  idval, sid_string,
 184                                  wbcErrorString(wbc_status));
 185                         continue;
 186                 }
 187         }
 188
 189         if (input != stdin) {
 190                 fclose(input);
 191         }
 192
 193         talloc_free(ctx);
 194         return 0;
 195 }
 196
 197 /***********************************************************
 198  Delete a SID mapping from a winbindd_idmap.tdb
 199  **********************************************************/
 200 static int net_idmap_delete(struct net_context *c, int argc, const char **argv)
 201 {
 202         d_printf("%s\n", _("Not implemented yet"));
 203         return -1;
 204 }
 205
 206 static int net_idmap_set(struct net_context *c, int argc, const char **argv)
 207 {
 208         d_printf("%s\n", _("Not implemented yet"));
 209         return -1;
 210 }
 211 bool idmap_store_secret(const char *backend, bool alloc,
 212                         const char *domain, const char *identity,
 213                         const char *secret)
 214 {
 215         char *tmp;
 216         int r;
 217         bool ret;
 218
 219         if (alloc) {
 220                 r = asprintf(&tmp, "IDMAP_ALLOC_%s", backend);
 221         } else {
 222                 r = asprintf(&tmp, "IDMAP_%s_%s", backend, domain);
 223         }
 224
 225         if (r < 0) return false;
 226
 227         strupper_m(tmp); /* make sure the key is case insensitive */
 228         ret = secrets_store_generic(tmp, identity, secret);
 229
 230         free(tmp);
 231         return ret;
 232 }
 233
 234
 235 static int net_idmap_secret(struct net_context *c, int argc, const char **argv)
 236 {
 237         TALLOC_CTX *ctx;
 238         const char *secret;
 239         const char *dn;
 240         char *domain;
 241         char *backend;
 242         char *opt = NULL;
 243         bool ret;
 244
 245         if (argc != 2 || c->display_usage) {
 246                 d_printf("%s\n%s",
 247                          _("Usage:"),
 248                          _("net idmap secret {<DOMAIN>|alloc} <secret>\n"
 249                            "  Set the secret for the specified domain "
 250                            "(or alloc module)\n"
 251                            "    DOMAIN\tDomain to set secret for.\n"
 252                            "    alloc\tSet secret for the alloc module\n"
 253                            "    secret\tNew secret to set.\n"));
 254                 return c->display_usage?0:-1;
 255         }
 256
 257         secret = argv[1];
 258
 259         ctx = talloc_new(NULL);
 260         ALLOC_CHECK(ctx);
 261
 262         if (strcmp(argv[0], "alloc") == 0) {
 263                 domain = NULL;
 264                 backend = lp_idmap_alloc_backend();
 265         } else {
 266                 domain = talloc_strdup(ctx, argv[0]);
 267                 ALLOC_CHECK(domain);
 268
 269                 opt = talloc_asprintf(ctx, "idmap config %s", domain);
 270                 ALLOC_CHECK(opt);
 271
 272                 backend = talloc_strdup(ctx, lp_parm_const_string(-1, opt, "backend", "tdb"));
 273                 ALLOC_CHECK(backend);
 274         }
 275
 276         if ( ( ! backend) || ( ! strequal(backend, "ldap"))) {
 277                 d_fprintf(stderr,
 278                           _("The only currently supported backend is LDAP\n"));
 279                 talloc_free(ctx);
 280                 return -1;
 281         }
 282
 283         if (domain) {
 284
 285                 dn = lp_parm_const_string(-1, opt, "ldap_user_dn", NULL);
 286                 if ( ! dn) {
 287                         d_fprintf(stderr,
 288                                   _("Missing ldap_user_dn option for domain "
 289                                     "%s\n"), domain);
 290                         talloc_free(ctx);
 291                         return -1;
 292                 }
 293
 294                 ret = idmap_store_secret("ldap", false, domain, dn, secret);
 295         } else {
 296                 dn = lp_parm_const_string(-1, "idmap alloc config", "ldap_user_dn", NULL);
 297                 if ( ! dn) {
 298                         d_fprintf(stderr,
 299                                   _("Missing ldap_user_dn option for alloc "
 300                                     "backend\n"));
 301                         talloc_free(ctx);
 302                         return -1;
 303                 }
 304
 305                 ret = idmap_store_secret("ldap", true, NULL, dn, secret);
 306         }
 307
 308         if ( ! ret) {
 309                 d_fprintf(stderr, _("Failed to store secret\n"));
 310                 talloc_free(ctx);
 311                 return -1;
 312         }
 313
 314         d_printf(_("Secret stored\n"));
 315         return 0;
 316 }
 317
 318 int net_help_idmap(struct net_context *c, int argc, const char **argv)
 319 {
 320         d_printf(_("net idmap dump <inputfile>\n"
 321                    "    Dump current id mapping\n"));
 322
 323         d_printf(_("net idmap restore\n"
 324                    "    Restore entries from stdin\n"));
 325
 326         /* Deliberately *not* document net idmap delete */
 327
 328         d_printf(_("net idmap secret <DOMAIN>|alloc <secret>\n"
 329                    "    Set the secret for the specified DOMAIN (or the alloc "
 330                    "module)\n"));
 331
 332         return -1;
 333 }
 334
 335 static int net_idmap_aclmapset(struct net_context *c, int argc, const char **argv)
 336 {
 337         TALLOC_CTX *mem_ctx;
 338         int result = -1;
 339         struct dom_sid src_sid, dst_sid;
 340         char *src, *dst;
 341         struct db_context *db;
 342         struct db_record *rec;
 343         NTSTATUS status;
 344
 345         if (argc != 3 || c->display_usage) {
 346                 d_fprintf(stderr, "%s net idmap aclmapset <tdb> "
 347                           "<src-sid> <dst-sid>\n", _("Usage:"));
 348                 return -1;
 349         }
 350
 351         if (!(mem_ctx = talloc_init("net idmap aclmapset"))) {
 352                 d_fprintf(stderr, _("talloc_init failed\n"));
 353                 return -1;
 354         }
 355
 356         if (!(db = db_open(mem_ctx, argv[0], 0, TDB_DEFAULT,
 357                            O_RDWR|O_CREAT, 0600))) {
 358                 d_fprintf(stderr, _("db_open failed: %s\n"), strerror(errno));
 359                 goto fail;
 360         }
 361
 362         if (!string_to_sid(&src_sid, argv[1])) {
 363                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[1]);
 364                 goto fail;
 365         }
 366
 367         if (!string_to_sid(&dst_sid, argv[2])) {
 368                 d_fprintf(stderr, _("%s is not a valid sid\n"), argv[2]);
 369                 goto fail;
 370         }
 371
 372         if (!(src = sid_string_talloc(mem_ctx, &src_sid))
 373             || !(dst = sid_string_talloc(mem_ctx, &dst_sid))) {
 374                 d_fprintf(stderr, _("talloc_strdup failed\n"));
 375                 goto fail;
 376         }
 377
 378         if (!(rec = db->fetch_locked(
 379                       db, mem_ctx, string_term_tdb_data(src)))) {
 380                 d_fprintf(stderr, _("could not fetch db record\n"));
 381                 goto fail;
 382         }
 383
 384         status = rec->store(rec, string_term_tdb_data(dst), 0);
 385         TALLOC_FREE(rec);
 386
 387         if (!NT_STATUS_IS_OK(status)) {
 388                 d_fprintf(stderr, _("could not store record: %s\n"),
 389                           nt_errstr(status));
 390                 goto fail;
 391         }
 392
 393         result = 0;
 394 fail:
 395         TALLOC_FREE(mem_ctx);
 396         return result;
 397 }
 398
 399 /***********************************************************
 400  Look at the current idmap
 401  **********************************************************/
 402 int net_idmap(struct net_context *c, int argc, const char **argv)
 403 {
 404         struct functable func[] = {
 405                 {
 406                         "dump",
 407                         net_idmap_dump,
 408                         NET_TRANSPORT_LOCAL,
 409                         N_("Dump the current ID mappings"),
 410                         N_("net idmap dump\n"
 411                            "  Dump the current ID mappings")
 412                 },
 413                 {
 414                         "restore",
 415                         net_idmap_restore,
 416                         NET_TRANSPORT_LOCAL,
 417                         N_("Restore entries from stdin"),
 418                         N_("net idmap restore\n"
 419                            "  Restore entries from stdin")
 420                 },
 421                 {
 422                         "setmap",
 423                         net_idmap_set,
 424                         NET_TRANSPORT_LOCAL,
 425                         N_("Not implemented yet"),
 426                         N_("net idmap setmap\n"
 427                            "  Not implemented yet")
 428                 },
 429                 {
 430                         "delete",
 431                         net_idmap_delete,
 432                         NET_TRANSPORT_LOCAL,
 433                         N_("Not implemented yet"),
 434                         N_("net idmap delete\n"
 435                            "  Not implemented yet")
 436                 },
 437                 {
 438                         "secret",
 439                         net_idmap_secret,
 440                         NET_TRANSPORT_LOCAL,
 441                         N_("Set secret for specified domain"),
 442                         N_("net idmap secret {<DOMAIN>|alloc} <secret>\n"
 443                            "  Set secret for specified domain or alloc module")
 444                 },
 445                 {
 446                         "aclmapset",
 447                         net_idmap_aclmapset,
 448                         NET_TRANSPORT_LOCAL,
 449                         N_("Set acl map"),
 450                         N_("net idmap aclmapset\n"
 451                            "  Set acl map")
 452                 },
 453                 {NULL, NULL, 0, NULL, NULL}
 454         };
 455
 456         return net_run_function(c, argc, argv, "net idmap", func);
 457 }
 458
 459