コード例 #1
0
ファイル: util_ldb.c プロジェクト: gojdic/samba
/*
  setup some initial ldif in a ldb
*/
int gendb_add_ldif(struct ldb_context *ldb, const char *ldif_string)
{
	struct ldb_ldif *ldif;
	int ret;
	ldif = ldb_ldif_read_string(ldb, &ldif_string);
	if (ldif == NULL) return -1;
	ret = ldb_add(ldb, ldif->msg);
	talloc_free(ldif);
	return ret;
}
コード例 #2
0
/**
   \details return the mapped property ID matching the nameid
   structure passed in parameter.

   \param ldb_ctx pointer to the namedprops ldb context
   \param nameid the MAPINAMEID structure to lookup
   \param propID pointer to the property ID the function returns

   \return MAPISTORE_SUCCESS on success, otherwise MAPISTORE_ERROR
 */
_PUBLIC_ enum mapistore_error mapistore_namedprops_create_id(struct ldb_context *ldb_ctx, struct MAPINAMEID nameid, uint16_t mapped_id)
{
	int ret;
	TALLOC_CTX *mem_ctx;
	char *ldif_record;
	struct ldb_ldif *ldif;
	char *hex_id, *dec_id, *dec_mappedid, *guid;
	struct ldb_message *normalized_msg;
	const char *ldif_records[] = { NULL, NULL };

	mem_ctx = talloc_zero(NULL, TALLOC_CTX);

	dec_mappedid = talloc_asprintf(mem_ctx, "%u", mapped_id);
	guid = GUID_string(mem_ctx, &nameid.lpguid);
	switch (nameid.ulKind) {
	case MNID_ID:
		hex_id = talloc_asprintf(mem_ctx, "%.4x", nameid.kind.lid);
		dec_id = talloc_asprintf(mem_ctx, "%u", nameid.kind.lid);
		ldif_record = talloc_asprintf(mem_ctx, "dn: CN=0x%s,CN=%s,CN=default\nobjectClass: MNID_ID\ncn: 0x%s\npropType: PT_NULL\noleguid: %s\nmappedId: %s\npropId: %s\n",
					      hex_id, guid, hex_id, guid, dec_mappedid, dec_id);
		break;
	case MNID_STRING:
		ldif_record = talloc_asprintf(mem_ctx, "dn: CN=%s,CN=%s,CN=default\nobjectClass: MNID_STRING\ncn: %s\npropType: PT_NULL\noleguid: %s\nmappedId: %s\npropName: %s\n",
					      nameid.kind.lpwstr.Name, guid, nameid.kind.lpwstr.Name, guid, dec_mappedid, nameid.kind.lpwstr.Name);
		break;
	default:
		abort();
	}

	DEBUG(5, ("inserting record:\n%s\n", ldif_record));
	ldif_records[0] = ldif_record;
	ldif = ldb_ldif_read_string(ldb_ctx, ldif_records);
	ret = ldb_msg_normalize(ldb_ctx, mem_ctx, ldif->msg, &normalized_msg);
	MAPISTORE_RETVAL_IF(ret, MAPISTORE_ERR_DATABASE_INIT, NULL);
	ret = ldb_add(ldb_ctx, normalized_msg);
	talloc_free(normalized_msg);
	if (ret != LDB_SUCCESS) {
		MAPISTORE_RETVAL_IF(ret, MAPISTORE_ERR_DATABASE_INIT, NULL);
	}

	/* we invalidate the cache, if present */
	if (nameids_cache) {
		talloc_free(nameids_cache);
		nameids_cache = NULL;
	}

	return ret;
}
コード例 #3
0
int confdb_create_base(struct confdb_ctx *cdb)
{
    int ret;
    struct ldb_ldif *ldif;

    const char *base_ldif = CONFDB_BASE_LDIF;

    while ((ldif = ldb_ldif_read_string(cdb->ldb, &base_ldif))) {
        ret = ldb_add(cdb->ldb, ldif->msg);
        if (ret != LDB_SUCCESS) {
            DEBUG(0, ("Failed to initialize DB (%d,[%s]), aborting!\n",
                      ret, ldb_errstring(cdb->ldb)));
            return EIO;
        }
        ldb_ldif_read_free(cdb->ldb, ldif);
    }

    return EOK;
}
コード例 #4
0
ファイル: confdb_setup.c プロジェクト: pbrezina/sssd
static int confdb_write_ldif(struct confdb_ctx *cdb,
                             const char *config_ldif,
                             bool replace_whole_db)
{
    int ret;
    struct ldb_ldif *ldif;

    while ((ldif = ldb_ldif_read_string(cdb->ldb, &config_ldif))) {
        if (ldif->changetype == LDB_CHANGETYPE_DELETE) {
            /* We should remove this section */
            ret = ldb_delete(cdb->ldb, ldif->msg->dn);
            if (ret == LDB_ERR_NO_SUCH_OBJECT) {
                /* Removing a non-existing section is not an error */
                ret = LDB_SUCCESS;
            }
        } else {
            ret = ldb_add(cdb->ldb, ldif->msg);
            if (ret != LDB_SUCCESS && replace_whole_db == false) {
                /* This section already existed, remove and re-add it. We
                * really want to replace the whole thing instead of messing
                * around with changetypes and flags on individual elements
                */
                ret = ldb_delete(cdb->ldb, ldif->msg->dn);
                if (ret == LDB_SUCCESS) {
                    ret = ldb_add(cdb->ldb, ldif->msg);
                }
            }
        }

        if (ret != LDB_SUCCESS) {
            DEBUG(SSSDBG_FATAL_FAILURE,
                "Failed to initialize DB (%d,[%s]), aborting!\n",
                ret, ldb_errstring(cdb->ldb));
            return EIO;
        }
        ldb_ldif_read_free(cdb->ldb, ldif);
    }

    return EOK;
}
コード例 #5
0
ファイル: schema_syntax.c プロジェクト: AIdrifter/samba
static bool torture_syntax_add_OR_Name(struct torture_context *tctx,
				       struct ldb_context *ldb,
				       struct dsdb_schema *schema)
{
	WERROR werr;
	int ldb_res;
	struct ldb_ldif *ldif;
	const char *ldif_str =	"dn: CN=ms-Exch-Auth-Orig,CN=Schema,CN=Configuration,DC=kma-exch,DC=devel\n"
				"changetype: add\n"
				"cn: ms-Exch-Auth-Orig\n"
				"attributeID: 1.2.840.113556.1.2.129\n"
				"attributeSyntax: 2.5.5.7\n"
				"isSingleValued: FALSE\n"
				"linkID: 110\n"
				"showInAdvancedViewOnly: TRUE\n"
				"adminDisplayName: ms-Exch-Auth-Orig\n"
				"oMObjectClass:: VgYBAgULHQ==\n"
				"adminDescription: ms-Exch-Auth-Orig\n"
				"oMSyntax: 127\n"
				"searchFlags: 16\n"
				"lDAPDisplayName: authOrig\n"
				"name: ms-Exch-Auth-Orig\n"
				"objectGUID:: 7tqEWktjAUqsZXqsFPQpRg==\n"
				"schemaIDGUID:: l3PfqOrF0RG7ywCAx2ZwwA==\n"
				"attributeSecurityGUID:: VAGN5Pi80RGHAgDAT7lgUA==\n"
				"isMemberOfPartialAttributeSet: TRUE\n";

	ldif = ldb_ldif_read_string(ldb, &ldif_str);
	torture_assert(tctx, ldif, "Failed to parse LDIF for authOrig");

	werr = dsdb_set_attribute_from_ldb(ldb, schema, ldif->msg);
	ldb_ldif_read_free(ldb, ldif);
	torture_assert_werr_ok(tctx, werr, "dsdb_set_attribute_from_ldb() failed!");

	ldb_res = dsdb_set_schema(ldb, schema);
	torture_assert_int_equal(tctx, ldb_res, LDB_SUCCESS, "dsdb_set_schema() failed");

	return true;
};
コード例 #6
0
ファイル: schema_set.c プロジェクト: sprymak/samba
WERROR dsdb_set_schema_from_ldif(struct ldb_context *ldb,
				 const char *pf, const char *df,
				 const char *dn)
{
	struct ldb_ldif *ldif;
	struct ldb_message *msg;
	TALLOC_CTX *mem_ctx;
	WERROR status;
	int ret;
	struct dsdb_schema *schema;
	const struct ldb_val *prefix_val;
	const struct ldb_val *info_val;
	struct ldb_val info_val_default;


	mem_ctx = talloc_new(ldb);
	if (!mem_ctx) {
		goto nomem;
	}

	schema = dsdb_new_schema(mem_ctx);
	if (!schema) {
		goto nomem;
	}
	schema->base_dn = ldb_dn_new(schema, ldb, dn);
	if (!schema->base_dn) {
		goto nomem;
	}
	schema->fsmo.we_are_master = true;
	schema->fsmo.update_allowed = true;
	schema->fsmo.master_dn = ldb_dn_new(schema, ldb, "@PROVISION_SCHEMA_MASTER");
	if (!schema->fsmo.master_dn) {
		goto nomem;
	}

	/*
	 * load the prefixMap attribute from pf
	 */
	ldif = ldb_ldif_read_string(ldb, &pf);
	if (!ldif) {
		status = WERR_INVALID_PARAM;
		goto failed;
	}
	talloc_steal(mem_ctx, ldif);

	ret = ldb_msg_normalize(ldb, mem_ctx, ldif->msg, &msg);
	if (ret != LDB_SUCCESS) {
		goto nomem;
	}
	talloc_free(ldif);

	prefix_val = ldb_msg_find_ldb_val(msg, "prefixMap");
	if (!prefix_val) {
	    	status = WERR_INVALID_PARAM;
		goto failed;
	}

	info_val = ldb_msg_find_ldb_val(msg, "schemaInfo");
	if (!info_val) {
		status = dsdb_schema_info_blob_new(mem_ctx, &info_val_default);
		W_ERROR_NOT_OK_GOTO(status, failed);
		info_val = &info_val_default;
	}

	status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
	if (!W_ERROR_IS_OK(status)) {
		DEBUG(0,("ERROR: dsdb_load_oid_mappings_ldb() failed with %s\n", win_errstr(status)));
		goto failed;
	}

	/* load the attribute and class definitions out of df */
	while ((ldif = ldb_ldif_read_string(ldb, &df))) {
		talloc_steal(mem_ctx, ldif);

		ret = ldb_msg_normalize(ldb, ldif, ldif->msg, &msg);
		if (ret != LDB_SUCCESS) {
			goto nomem;
		}

		status = dsdb_schema_set_el_from_ldb_msg(ldb, schema, msg);
		talloc_free(ldif);
		if (!W_ERROR_IS_OK(status)) {
			goto failed;
		}
	}

	ret = dsdb_set_schema(ldb, schema);
	if (ret != LDB_SUCCESS) {
		status = WERR_FOOBAR;
		goto failed;
	}

	ret = dsdb_schema_fill_extended_dn(ldb, schema);
	if (ret != LDB_SUCCESS) {
		status = WERR_FOOBAR;
		goto failed;
	}

	goto done;

nomem:
	status = WERR_NOMEM;
failed:
done:
	talloc_free(mem_ctx);
	return status;
}
コード例 #7
0
ファイル: dbspeed.c プロジェクト: AllardJ/Tomato
/*
  test ldb speed
*/
static bool test_ldb_speed(struct torture_context *torture, const void *_data)
{
	struct timeval tv;
	struct ldb_context *ldb;
	int timelimit = torture_setting_int(torture, "timelimit", 10);
	int i, count;
	TALLOC_CTX *tmp_ctx = talloc_new(torture);
	struct ldb_ldif *ldif;
	const char *init_ldif = "dn: @INDEXLIST\n" \
		"@IDXATTR: UID\n";
	float ldb_speed;

	unlink("./test.ldb");

	torture_comment(torture, "Testing ldb speed for sidmap\n");

	ldb = ldb_wrap_connect(tmp_ctx, torture->ev, torture->lp_ctx, "tdb://test.ldb", 
				NULL, NULL, LDB_FLG_NOSYNC, NULL);
	if (!ldb) {
		unlink("./test.ldb");
		talloc_free(tmp_ctx);
		torture_fail(torture, "Failed to open test.ldb");
	}

	/* add an index */
	ldif = ldb_ldif_read_string(ldb, &init_ldif);
	if (ldif == NULL) goto failed;
	if (ldb_add(ldb, ldif->msg) != LDB_SUCCESS) goto failed;
	talloc_free(ldif);

	torture_comment(torture, "Adding %d SID records\n", torture_entries);

	for (i=0;i<torture_entries;i++) {
		if (!ldb_add_record(ldb, i)) {
			torture_result(torture, TORTURE_FAIL, "Failed to add SID %d\n", i);
			goto failed;
		}
	}

	if (talloc_total_blocks(torture) > 100) {
		torture_result(torture, TORTURE_FAIL, "memory leak in ldb add\n");
		goto failed;
	}

	torture_comment(torture, "Testing for %d seconds\n", timelimit);

	tv = timeval_current();

	for (count=0;timeval_elapsed(&tv) < timelimit;count++) {
		struct ldb_dn *dn;
		struct ldb_result *res;

		i = random() % torture_entries;
		dn = ldb_dn_new_fmt(tmp_ctx, ldb, "SID=S-1-5-21-53173311-3623041448-2049097239-%u", i);
		if (ldb_search(ldb, tmp_ctx, &res, dn, LDB_SCOPE_BASE, NULL, NULL) != LDB_SUCCESS || res->count != 1) {
			torture_fail(torture, talloc_asprintf(torture, "Failed to find SID %d", i));
		}
		talloc_free(res);
		talloc_free(dn);
		if (ldb_search(ldb, tmp_ctx, &res, NULL, LDB_SCOPE_SUBTREE, NULL, "(UID=%u)", i) != LDB_SUCCESS || res->count != 1) {
			torture_fail(torture, talloc_asprintf(torture, "Failed to find UID %d", i));
		}
		talloc_free(res);
	}

	if (talloc_total_blocks(torture) > 100) {
		unlink("./test.ldb");
		talloc_free(tmp_ctx);
		torture_fail(torture, "memory leak in ldb search");
	}

	ldb_speed = count/timeval_elapsed(&tv);
	torture_comment(torture, "ldb speed %.2f ops/sec\n", ldb_speed);

	torture_comment(torture, "ldb/tdb speed ratio is %.2f%%\n", (100*ldb_speed/tdb_speed));
	

	unlink("./test.ldb");
	talloc_free(tmp_ctx);
	return true;

failed:
	unlink("./test.ldb");
	talloc_free(tmp_ctx);
	return false;
}
コード例 #8
0
ファイル: confdb_setup.c プロジェクト: mmsrubar/thesis
int confdb_init_db(const char *config_file, struct confdb_ctx *cdb)
{
    TALLOC_CTX *tmp_ctx;
    int ret;
    int sret = EOK;
    int version;
    char timestr[21];
    char *lasttimestr;
    bool in_transaction = false;
    const char *config_ldif;
    const char *vals[2] = { timestr, NULL };
    struct ldb_ldif *ldif;
    struct sss_ini_initdata *init_data;


    tmp_ctx = talloc_new(cdb);
    if (tmp_ctx == NULL) {
        DEBUG(SSSDBG_FATAL_FAILURE, "Out of memory.\n");
        return ENOMEM;
    }

    init_data = sss_ini_initdata_init(tmp_ctx);
    if (!init_data) {
        DEBUG(SSSDBG_FATAL_FAILURE, "Out of memory.\n");
        ret = ENOMEM;
        goto done;
    }

    /* Open config file */
    ret = sss_ini_config_file_open(init_data, config_file);
    if (ret != EOK) {
        DEBUG(SSSDBG_TRACE_FUNC,
              "sss_ini_config_file_open failed: %s [%d]\n", strerror(ret),
               ret);
        if (ret == ENOENT) {
            /* sss specific error denoting missing configuration file */
            ret = ERR_MISSING_CONF;
        }
        goto done;
    }

    ret = sss_ini_config_access_check(init_data);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE,
              "Permission check on config file failed.\n");
        ret = EPERM;
        goto done;
    }

    /* Determine if the conf file has changed since we last updated
     * the confdb
     */
    ret = sss_ini_get_stat(init_data);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Status check on config file failed.\n");
        ret = errno;
        goto done;
    }

    errno = 0;

    ret = sss_ini_get_mtime(init_data, sizeof(timestr), timestr);
    if (ret <= 0 || ret >= sizeof(timestr)) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Failed to convert time_t to string ??\n");
        ret = errno ? errno : EFAULT;
    }
    ret = confdb_get_string(cdb, tmp_ctx, "config", "lastUpdate",
                            NULL, &lasttimestr);
    if (ret == EOK) {

        /* check if we lastUpdate and last file modification change differ*/
        if ((lasttimestr != NULL) && (strcmp(lasttimestr, timestr) == 0)) {
            /* not changed, get out, nothing more to do */
            ret = EOK;
            goto done;
        }
    } else {
        DEBUG(SSSDBG_FATAL_FAILURE, "Failed to get lastUpdate attribute.\n");
        goto done;
    }

    ret = sss_ini_get_config(init_data, config_file);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE, "Failed to load configuration\n");
        goto done;
    }

    /* Make sure that the config file version matches the confdb version */
    ret = sss_ini_get_cfgobj(init_data, "sssd", "config_file_version");
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Internal error determining config_file_version\n");
        goto done;
    }

    ret = sss_ini_check_config_obj(init_data);
    if (ret != EOK) {
        /* No known version. Assumed to be version 1 */
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Config file is an old version. "
               "Please run configuration upgrade script.\n");
        ret = EINVAL;
        goto done;
    }

    version = sss_ini_get_int_config_value(init_data, 1, -1, &ret);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
                "Config file version could not be determined\n");
        goto done;
    } else if (version < CONFDB_VERSION_INT) {
        DEBUG(SSSDBG_FATAL_FAILURE,
                "Config file is an old version. "
                 "Please run configuration upgrade script.\n");
        ret = EINVAL;
        goto done;
    } else if (version > CONFDB_VERSION_INT) {
        DEBUG(SSSDBG_FATAL_FAILURE,
                "Config file version is newer than confdb\n");
        ret = EINVAL;
        goto done;
    }

    /* Set up a transaction to replace the configuration */
    ret = ldb_transaction_start(cdb->ldb);
    if (ret != LDB_SUCCESS) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Failed to start a transaction for "
               "updating the configuration\n");
        ret = sysdb_error_to_errno(ret);
        goto done;
    }
    in_transaction = true;

    /* Purge existing database */
    ret = confdb_purge(cdb);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
              "Could not purge existing configuration\n");
        goto done;
    }

    ret = sss_confdb_create_ldif(tmp_ctx, init_data, &config_ldif);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE, "Could not create LDIF for confdb\n");
        goto done;
    }

    DEBUG(SSSDBG_TRACE_LIBS, "LDIF file to import: \n%s", config_ldif);

    while ((ldif = ldb_ldif_read_string(cdb->ldb, &config_ldif))) {
        ret = ldb_add(cdb->ldb, ldif->msg);
        if (ret != LDB_SUCCESS) {
            DEBUG(SSSDBG_FATAL_FAILURE,
                    "Failed to initialize DB (%d,[%s]), aborting!\n",
                     ret, ldb_errstring(cdb->ldb));
            ret = EIO;
            goto done;
        }
        ldb_ldif_read_free(cdb->ldb, ldif);
    }

    /* now store the lastUpdate time so that we do not re-init if nothing
     * changed on restart */

    ret = confdb_add_param(cdb, true, "config", "lastUpdate", vals);
    if (ret != EOK) {
        DEBUG(SSSDBG_FATAL_FAILURE,
                "Failed to set last update time on db!\n");
        goto done;
    }

    ret = ldb_transaction_commit(cdb->ldb);
    if (ret != EOK) {
        DEBUG(SSSDBG_CRIT_FAILURE, "Failed to commit transaction\n");
        goto done;
    }
    in_transaction = false;

    ret = EOK;

done:
    if (in_transaction) {
        sret = ldb_transaction_cancel(cdb->ldb);
        if (sret != EOK) {
            DEBUG(SSSDBG_CRIT_FAILURE, "Failed to cancel transaction\n");
        }
    }

    sss_ini_config_destroy(init_data);
    sss_ini_close_file(init_data);

    talloc_zfree(tmp_ctx);
    return ret;
}
コード例 #9
0
ファイル: schema_set.c プロジェクト: 0x24bin/winexe-1
WERROR dsdb_set_schema_from_ldif(struct ldb_context *ldb, const char *pf, const char *df)
{
	struct ldb_ldif *ldif;
	struct ldb_message *msg;
	TALLOC_CTX *mem_ctx;
	WERROR status;
	int ret;
	struct dsdb_schema *schema;
	const struct ldb_val *prefix_val;
	const struct ldb_val *info_val;
	struct ldb_val info_val_default;


	mem_ctx = talloc_new(ldb);
	if (!mem_ctx) {
		goto nomem;
	}

	schema = dsdb_new_schema(mem_ctx, lp_iconv_convenience(ldb_get_opaque(ldb, "loadparm")));

	schema->fsmo.we_are_master = true;
	schema->fsmo.master_dn = ldb_dn_new_fmt(schema, ldb, "@PROVISION_SCHEMA_MASTER");
	if (!schema->fsmo.master_dn) {
		goto nomem;
	}

	/*
	 * load the prefixMap attribute from pf
	 */
	ldif = ldb_ldif_read_string(ldb, &pf);
	if (!ldif) {
		status = WERR_INVALID_PARAM;
		goto failed;
	}
	talloc_steal(mem_ctx, ldif);

	msg = ldb_msg_canonicalize(ldb, ldif->msg);
	if (!msg) {
		goto nomem;
	}
	talloc_steal(mem_ctx, msg);
	talloc_free(ldif);

	prefix_val = ldb_msg_find_ldb_val(msg, "prefixMap");
	if (!prefix_val) {
	    	status = WERR_INVALID_PARAM;
		goto failed;
	}

	info_val = ldb_msg_find_ldb_val(msg, "schemaInfo");
	if (!info_val) {
		info_val_default = strhex_to_data_blob(mem_ctx, "FF0000000000000000000000000000000000000000");
		if (!info_val_default.data) {
			goto nomem;
		}
		info_val = &info_val_default;
	}

	status = dsdb_load_oid_mappings_ldb(schema, prefix_val, info_val);
	if (!W_ERROR_IS_OK(status)) {
		goto failed;
	}

	/*
	 * load the attribute and class definitions outof df
	 */
	while ((ldif = ldb_ldif_read_string(ldb, &df))) {
		talloc_steal(mem_ctx, ldif);

		msg = ldb_msg_canonicalize(ldb, ldif->msg);
		if (!msg) {
			goto nomem;
		}

		status = dsdb_schema_set_el_from_ldb_msg(ldb, schema, msg);
		talloc_free(ldif);
		if (!W_ERROR_IS_OK(status)) {
			goto failed;
		}
	}

	ret = dsdb_set_schema(ldb, schema);
	if (ret != LDB_SUCCESS) {
		status = WERR_FOOBAR;
		goto failed;
	}

	ret = dsdb_schema_fill_extended_dn(ldb, schema);
	if (ret != LDB_SUCCESS) {
		status = WERR_FOOBAR;
		goto failed;
	}

	goto done;

nomem:
	status = WERR_NOMEM;
failed:
done:
	talloc_free(mem_ctx);
	return status;
}
コード例 #10
0
/*
  connect to the group mapping ldb
*/
static bool init_group_mapping(void)
{
	bool existed;
	const char *init_ldif[] = 
		{ "dn: @ATTRIBUTES\n" \
		  "ntName: CASE_INSENSITIVE\n" \
		  "\n",
		  "dn: @INDEXLIST\n" \
		  "@IDXATTR: gidNumber\n" \
		  "@IDXATTR: ntName\n" \
		  "@IDXATTR: member\n" };
	const char *db_path, *tdb_path;
	int ret;
	int flags = 0;

	if (ldb != NULL) {
		return True;
	}

	/* this is needed as Samba3 doesn't have this globally yet */
	ldb_global_init();

	db_path = state_path("group_mapping.ldb");

	ldb = ldb_init(NULL);
	if (ldb == NULL) goto failed;

	/* Ensure this db is created read/write for root only. */
	ldb_set_create_perms(ldb, 0600);

	existed = file_exist(db_path, NULL);

	if (lp_parm_bool(-1, "groupmap", "nosync", False)) {
		flags |= LDB_FLG_NOSYNC;
	}

	if (!lp_use_mmap()) {
		flags |= LDB_FLG_NOMMAP;
	}

	ret = ldb_connect(ldb, db_path, flags, NULL);
	if (ret != LDB_SUCCESS) {
		goto failed;
	}

	/* force the permissions on the ldb to 0600 - this will fix
	   existing databases as well as new ones */
	if (chmod(db_path, 0600) != 0) {
		goto failed;
	}

	if (!existed) {
		/* initialise the ldb with an index */
		struct ldb_ldif *ldif;
		int i;
		for (i=0;i<ARRAY_SIZE(init_ldif);i++) {
			ldif = ldb_ldif_read_string(ldb, &init_ldif[i]);
			if (ldif == NULL) goto failed;
			ret = ldb_add(ldb, ldif->msg);
			talloc_free(ldif);
			if (ret == -1) goto failed;
		}
	}

	/* possibly upgrade */
	tdb_path = state_path("group_mapping.tdb");
	if (file_exist(tdb_path, NULL) && !mapping_upgrade(tdb_path)) {
		unlink(state_path("group_mapping.ldb"));
		goto failed;
	}

	return True;

failed:
	DEBUG(0,("Failed to open group mapping ldb '%s' - '%s'\n",
		 db_path, ldb?ldb_errstring(ldb):strerror(errno)));
	talloc_free(ldb);
	ldb = NULL;
	return False;
}