source/param/share_ldb.c

   1 /*
   2    Unix SMB/CIFS implementation.
   3
   4    LDB based services configuration
   5
   6    Copyright (C) Simo Sorce     2006
   7
   8    This program is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as published by
  10    the Free Software Foundation; either version 2 of the License, or
  11    (at your option) any later version.
  12
  13    This program is distributed in the hope that it will be useful,
  14    but WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16    GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public License
  19    along with this program; if not, write to the Free Software
  20    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  21 */
  22
  23 #include "includes.h"
  24 #include "ldb/include/ldb.h"
  25 #include "ldb/include/ldb_errors.h"
  26 #include "auth/auth.h"
  27 #include "db_wrap.h"
  28 #include "param/share.h"
  29
  30 static NTSTATUS sldb_init(TALLOC_CTX *mem_ctx, const struct share_ops *ops, struct share_context **ctx)
  31 {
  32         struct ldb_context *sdb;
  33
  34         *ctx = talloc(mem_ctx, struct share_context);
  35         if (!*ctx) {
  36                 DEBUG(0, ("ERROR: Out of memory!\n"));
  37                 return NT_STATUS_NO_MEMORY;
  38         }
  39
  40         sdb = ldb_wrap_connect( *ctx,
  41                                 private_path(*ctx, "share.ldb"),
  42                                 system_session(*ctx),
  43                                 NULL, 0, NULL);
  44
  45         if (!sdb) {
  46                 talloc_free(*ctx);
  47                 return NT_STATUS_UNSUCCESSFUL;
  48         }
  49
  50         (*ctx)->ops = ops;
  51         (*ctx)->priv_data = (void *)sdb;
  52
  53         return NT_STATUS_OK;
  54 }
  55
  56 static const char *sldb_string_option(struct share_config *scfg, const char *opt_name, const char *defval)
  57 {
  58         struct ldb_message *msg;
  59         struct ldb_message_element *el;
  60
  61         if (scfg == NULL) return defval;
  62
  63         msg = talloc_get_type(scfg->opaque, struct ldb_message);
  64
  65         if (strchr(opt_name, ':')) {
  66                 char *name, *p;
  67
  68                 name = talloc_strdup(scfg, opt_name);
  69                 if (!name) {
  70                         return NULL;
  71                 }
  72                 p = strchr(name, ':');
  73                 *p = '-';
  74
  75                 el = ldb_msg_find_element(msg, name);
  76         } else {
  77                 el = ldb_msg_find_element(msg, opt_name);
  78         }
  79
  80         if (el == NULL) {
  81                 return defval;
  82         }
  83
  84         return (const char *)(el->values[0].data);
  85 }
  86
  87 static int sldb_int_option(struct share_config *scfg, const char *opt_name, int defval)
  88 {
  89         const char *val;
  90         int ret;
  91
  92         val = sldb_string_option(scfg, opt_name, NULL);
  93         if (val == NULL) return defval;
  94
  95         errno = 0;
  96         ret = (int)strtol(val, NULL, 10);
  97         if (errno) return -1;
  98
  99         return ret;
 100 }
 101
 102 static BOOL sldb_bool_option(struct share_config *scfg, const char *opt_name, BOOL defval)
 103 {
 104         const char *val;
 105
 106         val = sldb_string_option(scfg, opt_name, NULL);
 107         if (val == NULL) return defval;
 108
 109         if (strcasecmp(val, "true") == 0) return True;
 110
 111         return False;
 112 }
 113
 114 static const char **sldb_string_list_option(TALLOC_CTX *mem_ctx, struct share_config *scfg, const char *opt_name)
 115 {
 116         struct ldb_message *msg;
 117         struct ldb_message_element *el;
 118         const char **list;
 119         int i;
 120
 121         if (scfg == NULL) return NULL;
 122
 123         msg = talloc_get_type(scfg->opaque, struct ldb_message);
 124
 125         if (strchr(opt_name, ':')) {
 126                 char *name, *p;
 127
 128                 name = talloc_strdup(scfg, opt_name);
 129                 if (!name) {
 130                         return NULL;
 131                 }
 132                 p = strchr(name, ':');
 133                 *p = '-';
 134
 135                 el = ldb_msg_find_element(msg, name);
 136         } else {
 137                 el = ldb_msg_find_element(msg, opt_name);
 138         }
 139
 140         if (el == NULL) {
 141                 return NULL;
 142         }
 143
 144         list = talloc_array(mem_ctx, const char *, el->num_values + 1);
 145         if (!list) return NULL;
 146
 147         for (i = 0; i < el->num_values; i++) {
 148                 list[i] = (const char *)(el->values[i].data);
 149         }
 150         list[i] = NULL;
 151
 152         return list;
 153 }
 154
 155 static NTSTATUS sldb_list_all(TALLOC_CTX *mem_ctx,
 156                                  struct share_context *ctx,
 157                                  int *count,
 158                                  const char ***names)
 159 {
 160         int ret, i, j;
 161         const char **n;
 162         struct ldb_context *ldb;
 163         struct ldb_result *res;
 164         TALLOC_CTX *tmp_ctx;
 165
 166         tmp_ctx = talloc_new(mem_ctx);
 167         if (!tmp_ctx) {
 168                 DEBUG(0,("ERROR: Out of memory!\n"));
 169                 return NT_STATUS_NO_MEMORY;
 170         }
 171
 172         ldb = talloc_get_type(ctx->priv_data, struct ldb_context);
 173
 174         ret = ldb_search(ldb, ldb_dn_new(tmp_ctx, ldb, "CN=SHARES"), LDB_SCOPE_SUBTREE, "(name=*)", NULL, &res);
 175         talloc_steal(tmp_ctx, res);
 176         if (ret != LDB_SUCCESS) {
 177                 talloc_free(tmp_ctx);
 178                 return NT_STATUS_BAD_NETWORK_NAME;
 179         }
 180
 181         n = talloc_array(mem_ctx, const char *, res->count);
 182         if (!n) {
 183                 DEBUG(0,("ERROR: Out of memory!\n"));
 184                 talloc_free(tmp_ctx);
 185                 return NT_STATUS_NO_MEMORY;
 186         }
 187
 188         for (i = 0, j = 0; i < res->count; i++) {
 189                 n[j] = talloc_strdup(n, ldb_msg_find_attr_as_string(res->msgs[i], "name", NULL));
 190                 if (!n[j]) {
 191                         DEBUG(0,("WARNING: Malformed share object in share database\n!"));
 192                         continue;
 193                 }
 194                 j++;
 195         }
 196
 197         *names = n;
 198         *count = j;
 199         talloc_free(tmp_ctx);
 200
 201         return NT_STATUS_OK;
 202 }
 203
 204 static NTSTATUS sldb_get_config(TALLOC_CTX *mem_ctx,
 205                          struct share_context *ctx,
 206                          const char *name,
 207                          struct share_config **scfg)
 208 {
 209         int ret;
 210         struct share_config *s;
 211         struct ldb_context *ldb;
 212         struct ldb_result *res;
 213         TALLOC_CTX *tmp_ctx;
 214
 215         tmp_ctx = talloc_new(mem_ctx);
 216         if (!tmp_ctx) {
 217                 DEBUG(0,("ERROR: Out of memory!\n"));
 218                 return NT_STATUS_NO_MEMORY;
 219         }
 220
 221         ldb = talloc_get_type(ctx->priv_data, struct ldb_context);
 222
 223         ret = ldb_search_exp_fmt(ldb, tmp_ctx, &res,
 224                                  ldb_dn_new(tmp_ctx, ldb, "CN=SHARES"), LDB_SCOPE_SUBTREE, NULL,
 225                                  "(name=%s)", name);
 226         if (ret != LDB_SUCCESS || res->count != 1) {
 227                 talloc_free(tmp_ctx);
 228                 return NT_STATUS_BAD_NETWORK_NAME;
 229         }
 230
 231         s = talloc(tmp_ctx, struct share_config);
 232         if (!s) {
 233                 DEBUG(0,("ERROR: Out of memory!\n"));
 234                 talloc_free(tmp_ctx);
 235                 return NT_STATUS_NO_MEMORY;
 236         }
 237
 238         s->name = talloc_strdup(s, ldb_msg_find_attr_as_string(res->msgs[0], "name", NULL));
 239         if (!s->name) {
 240                 DEBUG(0,("ERROR: Invalid share object!\n"));
 241                 talloc_free(tmp_ctx);
 242                 return NT_STATUS_UNSUCCESSFUL;
 243         }
 244
 245         s->opaque = talloc_steal(s, res->msgs[0]);
 246         if (!s->opaque) {
 247                 DEBUG(0,("ERROR: Invalid share object!\n"));
 248                 talloc_free(tmp_ctx);
 249                 return NT_STATUS_UNSUCCESSFUL;
 250         }
 251
 252         s->ctx = ctx;
 253
 254         *scfg = talloc_steal(mem_ctx, s);
 255
 256         talloc_free(tmp_ctx);
 257         return NT_STATUS_OK;
 258 }
 259
 260 #define SHARE_ADD_STRING(name, value) do { \
 261         err = ldb_msg_add_string(msg, name, value); \
 262         if (err != LDB_SUCCESS) { \
 263                 DEBUG(2,("ERROR: unable to add string share option %s to ldb msg\n", name)); \
 264                 ret = NT_STATUS_UNSUCCESSFUL; \
 265                 goto done; \
 266         } } while(0)
 267
 268 #define SHARE_ADD_INT(name, value) do { \
 269         err = ldb_msg_add_fmt(msg, name, "%d", value); \
 270         if (err != LDB_SUCCESS) { \
 271                 DEBUG(2,("ERROR: unable to add integer share option %s to ldb msg\n", name)); \
 272                 ret = NT_STATUS_UNSUCCESSFUL; \
 273                 goto done; \
 274         } } while(0)
 275
 276 #define SHARE_ADD_BLOB(name, value) do { \
 277         err = ldb_msg_add_value(msg, name, value, NULL); \
 278         if (err != LDB_SUCCESS) { \
 279                 DEBUG(2,("ERROR: unable to add blob share option %s to ldb msg\n", name)); \
 280                 ret = NT_STATUS_UNSUCCESSFUL; \
 281                 goto done; \
 282         } } while(0)
 283
 284 NTSTATUS sldb_create(struct share_context *ctx, const char *name, struct share_info *info, int count)
 285 {
 286         struct ldb_context *ldb;
 287         struct ldb_message *msg;
 288         TALLOC_CTX *tmp_ctx;
 289         NTSTATUS ret;
 290         int err, i, j;
 291
 292         for (i = 0, j = 0; i < count && j != 0x03; i++) {
 293                 if (strcasecmp(info[i].name, SHARE_TYPE) == 0) j |= 0x02;
 294                 if (strcasecmp(info[i].name, SHARE_PATH) == 0) j |= 0x01;
 295                 if (strcasecmp(info[i].name, SHARE_NAME) == 0) {
 296                         if (strcasecmp(name, (char *)info[i].value) != 0) {
 297                                 return NT_STATUS_INVALID_PARAMETER;
 298                         }
 299                 }
 300         }
 301         if (!name || j != 0x03) {
 302                 return NT_STATUS_INVALID_PARAMETER;
 303         }
 304
 305         tmp_ctx = talloc_new(NULL);
 306         if (!tmp_ctx) {
 307                 DEBUG(0,("ERROR: Out of memory!\n"));
 308                 return NT_STATUS_NO_MEMORY;
 309         }
 310
 311         ldb = talloc_get_type(ctx->priv_data, struct ldb_context);
 312
 313         msg = ldb_msg_new(tmp_ctx);
 314         if (!msg) {
 315                 DEBUG(0,("ERROR: Out of memory!\n"));
 316                 ret = NT_STATUS_NO_MEMORY;
 317                 goto done;
 318         }
 319
 320         /* TODO: escape info->name */
 321         msg->dn = ldb_dn_new_fmt(tmp_ctx, ldb, "CN=%s,CN=SHARES", name);
 322         if (!msg->dn) {
 323                 DEBUG(0,("ERROR: Out of memory!\n"));
 324                 ret = NT_STATUS_NO_MEMORY;
 325                 goto done;
 326         }
 327
 328         SHARE_ADD_STRING("objectClass", "top");
 329         SHARE_ADD_STRING("objectClass", "share");
 330         SHARE_ADD_STRING("cn", name);
 331         SHARE_ADD_STRING(SHARE_NAME, name);
 332
 333         for (i = 0; i < count; i++) {
 334                 if (strcasecmp(info[i].name, SHARE_NAME) == 0) continue;
 335
 336                 switch (info[i].type) {
 337                 case SHARE_INFO_STRING:
 338                         SHARE_ADD_STRING(info[i].name, (char *)info[i].value);
 339                         break;
 340                 case SHARE_INFO_INT:
 341                         SHARE_ADD_INT(info[i].name, *((int *)info[i].value));
 342                         break;
 343                 case SHARE_INFO_BLOB:
 344                         SHARE_ADD_BLOB(info[i].name, (DATA_BLOB *)info[i].value);
 345                         break;
 346                 default:
 347                         DEBUG(2,("ERROR: Invalid share info type for %s\n", info[i].name));
 348                         ret = NT_STATUS_INVALID_PARAMETER;
 349                         goto done;
 350                 }
 351         }
 352
 353         /* TODO: Security Descriptor */
 354
 355         SHARE_ADD_STRING(SHARE_AVAILABLE, "True");
 356         SHARE_ADD_STRING(SHARE_BROWSEABLE, "True");
 357         SHARE_ADD_STRING(SHARE_READONLY, "False");
 358         SHARE_ADD_STRING(SHARE_NTVFS_HANDLER, "unixuid");
 359         SHARE_ADD_STRING(SHARE_NTVFS_HANDLER, "posix");
 360
 361         err = ldb_add(ldb, msg);
 362         if (err != LDB_SUCCESS) {
 363                 DEBUG(2,("ERROR: unable to add share %s to share.ldb\n"
 364                          "       err=%d [%s]\n", name, err, ldb_errstring(ldb)));
 365                 if (err == LDB_ERR_NO_SUCH_OBJECT) {
 366                         ret = NT_STATUS_BAD_NETWORK_NAME;
 367                 } else {
 368                         ret = NT_STATUS_UNSUCCESSFUL;
 369                 }
 370                 goto done;
 371         }
 372
 373         ret = NT_STATUS_OK;
 374 done:
 375         talloc_free(tmp_ctx);
 376         return ret;
 377 }
 378
 379 #define SHARE_MOD_STRING(name, value) do { \
 380         err = ldb_msg_add_empty(msg, name, LDB_FLAG_MOD_REPLACE, NULL); \
 381         if (err != LDB_SUCCESS) { \
 382                 DEBUG(2,("ERROR: unable to add string share option %s to ldb msg\n", name)); \
 383                 ret = NT_STATUS_UNSUCCESSFUL; \
 384                 goto done; \
 385         } \
 386         err = ldb_msg_add_string(msg, name, value); \
 387         if (err != LDB_SUCCESS) { \
 388                 DEBUG(2,("ERROR: unable to add string share option %s to ldb msg\n", name)); \
 389                 ret = NT_STATUS_UNSUCCESSFUL; \
 390                 goto done; \
 391         } } while(0)
 392
 393 #define SHARE_MOD_INT(name, value) do { \
 394         err = ldb_msg_add_empty(msg, name, LDB_FLAG_MOD_REPLACE, NULL); \
 395         if (err != LDB_SUCCESS) { \
 396                 DEBUG(2,("ERROR: unable to add string share option %s to ldb msg\n", name)); \
 397                 ret = NT_STATUS_UNSUCCESSFUL; \
 398                 goto done; \
 399         } \
 400         err = ldb_msg_add_fmt(msg, name, "%d", value); \
 401         if (err != LDB_SUCCESS) { \
 402                 DEBUG(2,("ERROR: unable to add integer share option %s to ldb msg\n", name)); \
 403                 ret = NT_STATUS_UNSUCCESSFUL; \
 404                 goto done; \
 405         } } while(0)
 406
 407 #define SHARE_MOD_BLOB(name, value) do { \
 408         err = ldb_msg_add_empty(msg, name, LDB_FLAG_MOD_REPLACE, NULL); \
 409         if (err != LDB_SUCCESS) { \
 410                 DEBUG(2,("ERROR: unable to add string share option %s to ldb msg\n", name)); \
 411                 ret = NT_STATUS_UNSUCCESSFUL; \
 412                 goto done; \
 413         } \
 414         err = ldb_msg_add_value(msg, name, value, NULL); \
 415         if (err != LDB_SUCCESS) { \
 416                 DEBUG(2,("ERROR: unable to add blob share option %s to ldb msg\n", name)); \
 417                 ret = NT_STATUS_UNSUCCESSFUL; \
 418                 goto done; \
 419         } } while(0)
 420
 421 NTSTATUS sldb_set(struct share_context *ctx, const char *name, struct share_info *info, int count)
 422 {
 423         struct ldb_context *ldb;
 424         struct ldb_message *msg;
 425         TALLOC_CTX *tmp_ctx;
 426         NTSTATUS ret;
 427         bool do_rename = False;
 428         char *newname;
 429         int err, i;
 430
 431         if (!name) {
 432                 return NT_STATUS_INVALID_PARAMETER;
 433         }
 434
 435         tmp_ctx = talloc_new(NULL);
 436         if (!tmp_ctx) {
 437                 DEBUG(0,("ERROR: Out of memory!\n"));
 438                 return NT_STATUS_NO_MEMORY;
 439         }
 440
 441         ldb = talloc_get_type(ctx->priv_data, struct ldb_context);
 442
 443         msg = ldb_msg_new(tmp_ctx);
 444         if (!msg) {
 445                 DEBUG(0,("ERROR: Out of memory!\n"));
 446                 ret = NT_STATUS_NO_MEMORY;
 447                 goto done;
 448         }
 449
 450         /* TODO: escape name */
 451         msg->dn = ldb_dn_new_fmt(tmp_ctx, ldb, "CN=%s,CN=SHARES", name);
 452         if (!msg->dn) {
 453                 DEBUG(0,("ERROR: Out of memory!\n"));
 454                 ret = NT_STATUS_NO_MEMORY;
 455                 goto done;
 456         }
 457
 458         for (i = 0; i < count; i++) {
 459                 if (strcasecmp(info[i].name, SHARE_NAME) == 0) {
 460                         if (strcasecmp(name, (char *)info[i].value) != 0) {
 461                                 do_rename = True;
 462                                 newname = (char *)info[i].value;
 463                                 SHARE_MOD_STRING("cn", (char *)info[i].value);
 464                         }
 465                 }
 466
 467                 switch (info[i].type) {
 468                 case SHARE_INFO_STRING:
 469                         SHARE_MOD_STRING(info[i].name, (char *)info[i].value);
 470                         break;
 471                 case SHARE_INFO_INT:
 472                         SHARE_MOD_INT(info[i].name, *((int *)info[i].value));
 473                         break;
 474                 case SHARE_INFO_BLOB:
 475                         SHARE_MOD_BLOB(info[i].name, (DATA_BLOB *)info[i].value);
 476                         break;
 477                 default:
 478                         DEBUG(2,("ERROR: Invalid share info type for %s\n", info[i].name));
 479                         ret = NT_STATUS_INVALID_PARAMETER;
 480                         goto done;
 481                 }
 482         }
 483
 484         if (do_rename) {
 485                 struct ldb_dn *olddn, *newdn;
 486
 487                 olddn = msg->dn;
 488
 489                 /* TODO: escape newname */
 490                 newdn = ldb_dn_new_fmt(tmp_ctx, ldb, "CN=%s,CN=SHARES", newname);
 491                 if (!newdn) {
 492                         DEBUG(0,("ERROR: Out of memory!\n"));
 493                         ret = NT_STATUS_NO_MEMORY;
 494                         goto done;
 495                 }
 496
 497                 err = ldb_rename(ldb, olddn, newdn);
 498                 if (err != LDB_SUCCESS) {
 499                         DEBUG(2,("ERROR: unable to rename share %s (to %s)\n"
 500                                  "       err=%d [%s]\n", name, newname, err, ldb_errstring(ldb)));
 501                         if (err == LDB_ERR_NO_SUCH_OBJECT) {
 502                                 ret = NT_STATUS_BAD_NETWORK_NAME;
 503                         } else {
 504                                 ret = NT_STATUS_UNSUCCESSFUL;
 505                         }
 506                         goto done;
 507                 }
 508
 509                 msg->dn = newdn;
 510         }
 511
 512         err = ldb_modify(ldb, msg);
 513         if (err != LDB_SUCCESS) {
 514                 DEBUG(2,("ERROR: unable to add share %s to share.ldb\n"
 515                          "       err=%d [%s]\n", name, err, ldb_errstring(ldb)));
 516                 if (err == LDB_ERR_NO_SUCH_OBJECT) {
 517                         ret = NT_STATUS_BAD_NETWORK_NAME;
 518                 } else {
 519                         ret = NT_STATUS_UNSUCCESSFUL;
 520                 }
 521                 goto done;
 522         }
 523
 524         ret = NT_STATUS_OK;
 525 done:
 526         talloc_free(tmp_ctx);
 527         return ret;
 528 }
 529
 530 NTSTATUS sldb_remove(struct share_context *ctx, const char *name)
 531 {
 532         struct ldb_context *ldb;
 533         struct ldb_dn *dn;
 534         TALLOC_CTX *tmp_ctx;
 535         NTSTATUS ret;
 536         int err;
 537
 538         tmp_ctx = talloc_new(NULL);
 539         if (!tmp_ctx) {
 540                 DEBUG(0,("ERROR: Out of memory!\n"));
 541                 return NT_STATUS_NO_MEMORY;
 542         }
 543
 544         ldb = talloc_get_type(ctx->priv_data, struct ldb_context);
 545
 546         dn = ldb_dn_new_fmt(tmp_ctx, ldb, "CN=%s,CN=SHARES", name);
 547         if (!dn) {
 548                 DEBUG(0,("ERROR: Out of memory!\n"));
 549                 ret = NT_STATUS_NO_MEMORY;
 550                 goto done;
 551         }
 552
 553         err = ldb_delete(ldb, dn);
 554         if (err != LDB_SUCCESS) {
 555                 DEBUG(2,("ERROR: unable to remove share %s from share.ldb\n"
 556                          "       err=%d [%s]\n", name, err, ldb_errstring(ldb)));
 557                 ret = NT_STATUS_UNSUCCESSFUL;
 558                 goto done;
 559         }
 560
 561         ret = NT_STATUS_OK;
 562 done:
 563         talloc_free(tmp_ctx);
 564         return ret;
 565 }
 566
 567 NTSTATUS share_ldb_init(void)
 568 {
 569         static struct share_ops ops = {
 570                 .name = "ldb",
 571                 .init = sldb_init,
 572                 .string_option = sldb_string_option,
 573                 .int_option = sldb_int_option,
 574                 .bool_option = sldb_bool_option,
 575                 .string_list_option = sldb_string_list_option,
 576                 .list_all = sldb_list_all,
 577                 .get_config = sldb_get_config,
 578                 .create = sldb_create,
 579                 .set = sldb_set,
 580                 .remove = sldb_remove
 581         };
 582
 583         return share_register(&ops);
 584 }
 585