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-rw-r--r--contrib/dlz/drivers/dlz_bdb_driver.c800
1 files changed, 800 insertions, 0 deletions
diff --git a/contrib/dlz/drivers/dlz_bdb_driver.c b/contrib/dlz/drivers/dlz_bdb_driver.c
new file mode 100644
index 0000000..f68bd9e
--- /dev/null
+++ b/contrib/dlz/drivers/dlz_bdb_driver.c
@@ -0,0 +1,800 @@
+/*
+ * Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND STICHTING NLNET
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * STICHTING NLNET BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+ * USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * The development of Dynamically Loadable Zones (DLZ) for Bind 9 was
+ * conceived and contributed by Rob Butler.
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the
+ * above copyright notice and this permission notice appear in all
+ * copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ROB BUTLER
+ * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
+ * ROB BUTLER BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
+ * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE
+ * USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/*
+ * Copyright (C) 1999-2001, 2016 Internet Systems Consortium, Inc. ("ISC")
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifdef DLZ_BDB
+
+#include <config.h>
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+#include <dns/log.h>
+#include <dns/sdlz.h>
+#include <dns/result.h>
+
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/util.h>
+
+#include <named/globals.h>
+
+#include <dlz/dlz_bdb_driver.h>
+
+#include <db.h>
+
+static dns_sdlzimplementation_t *dlz_bdb = NULL;
+
+/* should the bdb driver use threads. */
+#ifdef ISC_PLATFORM_USETHREADS
+#define bdb_threads DB_THREAD
+#else
+#define bdb_threads 0
+#endif
+
+/* BDB database names */
+#define dlz_data "dns_data"
+#define dlz_zone "dns_zone"
+#define dlz_host "dns_host"
+#define dlz_client "dns_client"
+
+/*%
+ * This structure contains all the Berkeley DB handles
+ * for this instance of the BDB driver.
+ */
+
+typedef struct bdb_instance {
+ DB_ENV *dbenv; /*%< BDB environment */
+ DB *data; /*%< dns_data database handle */
+ DB *zone; /*%< zone database handle */
+ DB *host; /*%< host database handle */
+ DB *client; /*%< client database handle */
+ isc_mem_t *mctx; /*%< memory context */
+
+} bdb_instance_t;
+
+typedef struct parsed_data {
+ char *zone;
+ char *host;
+ char *type;
+ int ttl;
+ char *data;
+} parsed_data_t;
+
+
+/* forward reference */
+
+static isc_result_t
+bdb_findzone(void *driverarg, void *dbdata, const char *name,
+ dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo);
+
+/*%
+ * Parses the DBT from the Berkeley DB into a parsed_data record
+ * The parsed_data record should be allocated before and passed into the
+ * bdb_parse_data function. The char (type & data) fields should not
+ * be "free"d as that memory is part of the DBT data field. It will be
+ * "free"d when the DBT is freed.
+ */
+
+static isc_result_t
+bdb_parse_data(char *in, parsed_data_t *pd) {
+
+ char *endp, *ttlStr;
+ char *tmp = in;
+ char *lastchar = (char *) &tmp[strlen(tmp) + 1];
+
+ /*%
+ * String should be formated as:
+ * zone(a space)host(a space)ttl(a space)type(a space)remaining data
+ * examples:
+ * example.com www 10 A 127.0.0.1
+ * example.com mail 10 A 127.0.0.2
+ * example.com @ 10 MX 20 mail.example.com
+ */
+
+ /* save pointer to zone */
+ pd->zone = tmp;
+
+ /* find space after zone and change it to a '\0' */
+ tmp = strchr(tmp, ' ');
+ /* verify we found a space */
+ if (tmp == NULL)
+ return ISC_R_FAILURE;
+ /* change the space to a null (string terminator) */
+ tmp[0] = '\0';
+ /* make sure it is safe to increment pointer */
+ if (++tmp > lastchar)
+ return ISC_R_FAILURE;
+
+ /* save pointer to host */
+ pd->host = tmp;
+
+ /* find space after type and change it to a '\0' */
+ tmp = strchr(tmp, ' ');
+ /* verify we found a space */
+ if (tmp == NULL)
+ return ISC_R_FAILURE;
+ /* change the space to a null (string terminator) */
+ tmp[0] = '\0';
+ /* make sure it is safe to increment pointer */
+ if (++tmp > lastchar)
+ return ISC_R_FAILURE;
+
+ /* save pointer to dns type */
+ pd->type = tmp;
+
+ /* find space after type and change it to a '\0' */
+ tmp = strchr(tmp, ' ');
+ /* verify we found a space */
+ if (tmp == NULL)
+ return ISC_R_FAILURE;
+ /* change the space to a null (string terminator) */
+ tmp[0] = '\0';
+ /* make sure it is safe to increment pointer */
+ if (++tmp > lastchar)
+ return ISC_R_FAILURE;
+
+ /* save pointer to dns ttl */
+ ttlStr = tmp;
+
+ /* find space after ttl and change it to a '\0' */
+ tmp = strchr(tmp, ' ');
+ /* verify we found a space */
+ if (tmp == NULL)
+ return ISC_R_FAILURE;
+ /* change the space to a null (string terminator) */
+ tmp[0] = '\0';
+ /* make sure it is safe to increment pointer */
+ if (++tmp > lastchar)
+ return ISC_R_FAILURE;
+
+ /* save pointer to remainder of DNS data */
+ pd->data = tmp;
+
+ /* convert ttl string to integer */
+ pd->ttl = strtol(ttlStr, &endp, 10);
+ if (*endp != '\0' || pd->ttl < 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB driver ttl must be a postive number");
+ return ISC_R_FAILURE;
+ }
+
+ /* if we get this far everything should have worked. */
+ return ISC_R_SUCCESS;
+}
+
+/*
+ * DLZ methods
+ */
+
+static isc_result_t
+bdb_allowzonexfr(void *driverarg, void *dbdata, const char *name,
+ const char *client)
+{
+ isc_result_t result;
+ bdb_instance_t *db = (bdb_instance_t *) dbdata;
+ DBC *client_cursor = NULL;
+ DBT key, data;
+
+ /* check to see if we are authoritative for the zone first. */
+ result = bdb_findzone(driverarg, dbdata, name, NULL, NULL);
+ if (result != ISC_R_SUCCESS)
+ return (ISC_R_NOTFOUND);
+
+ memset(&key, 0, sizeof(DBT));
+ key.flags = DB_DBT_MALLOC;
+ key.data = strdup(name);
+ if (key.data == NULL) {
+ result = ISC_R_NOMEMORY;
+ goto xfr_cleanup;
+ }
+ key.size = strlen(key.data);
+
+ memset(&data, 0, sizeof(DBT));
+ data.flags = DB_DBT_MALLOC;
+ data.data = strdup(client);
+ if (data.data == NULL) {
+ result = ISC_R_NOMEMORY;
+ goto xfr_cleanup;
+ }
+ data.size = strlen(data.data);
+
+ /* get a cursor to loop through zone data */
+ if (db->client->cursor(db->client, NULL, &client_cursor, 0) != 0) {
+ result = ISC_R_FAILURE;
+ goto xfr_cleanup;
+ }
+
+ switch(client_cursor->c_get(client_cursor, &key, &data, DB_GET_BOTH)) {
+ case DB_NOTFOUND:
+ case DB_SECONDARY_BAD:
+ result = ISC_R_NOTFOUND;
+ break;
+ case 0:
+ result = ISC_R_SUCCESS;
+ break;
+ default:
+ result = ISC_R_FAILURE;
+ }
+
+ xfr_cleanup:
+
+ /* free any memory duplicate string in the key field */
+ if (key.data != NULL)
+ free(key.data);
+
+ /* free any memory allocated to the data field. */
+ if (data.data != NULL)
+ free(data.data);
+
+ /* get rid of zone_cursor */
+ if (client_cursor != NULL)
+ client_cursor->c_close(client_cursor);
+
+ return result;
+
+}
+
+static isc_result_t
+bdb_allnodes(const char *zone, void *driverarg, void *dbdata,
+ dns_sdlzallnodes_t *allnodes)
+{
+
+ isc_result_t result = ISC_R_NOTFOUND;
+ bdb_instance_t *db = (bdb_instance_t *) dbdata;
+ DBC *zone_cursor = NULL;
+ DBT key, data;
+ int flags;
+ int bdbres;
+ parsed_data_t pd;
+ char *tmp = NULL, *tmp_zone;
+
+ UNUSED(driverarg);
+
+ memset(&key, 0, sizeof(DBT));
+ memset(&data, 0, sizeof(DBT));
+
+ key.data = tmp_zone = strdup(zone);
+
+ if (key.data == NULL)
+ return (ISC_R_NOMEMORY);
+
+ key.size = strlen(key.data);
+
+ /* get a cursor to loop through zone data */
+ if (db->zone->cursor(db->zone, NULL, &zone_cursor, 0) != 0) {
+ result = ISC_R_FAILURE;
+ goto allnodes_cleanup;
+ }
+
+ flags = DB_SET;
+
+ while ((bdbres = zone_cursor->c_get(zone_cursor, &key, &data,
+ flags)) == 0) {
+
+ flags = DB_NEXT_DUP;
+
+ tmp = realloc(tmp, data.size + 1);
+ if (tmp == NULL)
+ goto allnodes_cleanup;
+
+ strncpy(tmp, data.data, data.size);
+ tmp[data.size] = '\0';
+
+ if (bdb_parse_data(tmp, &pd) != ISC_R_SUCCESS)
+ goto allnodes_cleanup;
+
+ result = dns_sdlz_putnamedrr(allnodes, pd.host, pd.type,
+ pd.ttl, pd.data);
+ if (result != ISC_R_SUCCESS)
+ goto allnodes_cleanup;
+
+ } /* end while loop */
+
+ allnodes_cleanup:
+
+ if (tmp != NULL)
+ free(tmp);
+
+ /* free any memory duplicate string in the key field */
+ if (tmp_zone != NULL)
+ free(tmp_zone);
+
+ /* get rid of zone_cursor */
+ if (zone_cursor != NULL)
+ zone_cursor->c_close(zone_cursor);
+
+ return result;
+
+}
+
+/*%
+ * Performs BDB cleanup.
+ * Used by bdb_create if there is an error starting up.
+ * Used by bdb_destroy when the driver is shutting down.
+ */
+
+static void
+bdb_cleanup(bdb_instance_t *db) {
+
+ isc_mem_t *mctx;
+
+ /* close databases */
+ if (db->data != NULL)
+ db->data->close(db->data, 0);
+ if (db->host != NULL)
+ db->host->close(db->host, 0);
+ if (db->zone != NULL)
+ db->zone->close(db->zone, 0);
+ if (db->client != NULL)
+ db->client->close(db->client, 0);
+
+ /* close environment */
+ if (db->dbenv != NULL)
+ db->dbenv->close(db->dbenv, 0);
+
+ /* cleanup memory */
+ if (db->mctx != NULL) {
+ /* save mctx for later */
+ mctx = db->mctx;
+ /* return, and detach the memory */
+ isc_mem_put(mctx, db, sizeof(bdb_instance_t));
+ isc_mem_detach(&mctx);
+ }
+}
+
+static isc_result_t
+bdb_findzone(void *driverarg, void *dbdata, const char *name,
+ dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo)
+{
+
+ isc_result_t result;
+ bdb_instance_t *db = (bdb_instance_t *) dbdata;
+ DBC *zone_cursor = NULL;
+ DBT key, data;
+
+ UNUSED(driverarg);
+ UNUSED(methods);
+ UNUSED(clientinfo);
+
+ memset(&key, 0, sizeof(DBT));
+ memset(&data, 0, sizeof(DBT));
+ data.flags = DB_DBT_MALLOC;
+
+ key.data = strdup(name);
+
+ if (key.data == NULL)
+ return (ISC_R_NOMEMORY);
+
+ key.size = strlen(key.data);
+
+ /* get a cursor to loop through zone data */
+ if (db->zone->cursor(db->zone, NULL, &zone_cursor, 0) != 0) {
+ result = ISC_R_NOTFOUND;
+ goto findzone_cleanup;
+ }
+
+ switch(zone_cursor->c_get(zone_cursor, &key, &data, DB_SET)) {
+ case DB_NOTFOUND:
+ case DB_SECONDARY_BAD:
+ result = ISC_R_NOTFOUND;
+ break;
+ case 0:
+ result = ISC_R_SUCCESS;
+ break;
+ default:
+ result = ISC_R_FAILURE;
+ }
+
+ findzone_cleanup:
+
+ /* free any memory duplicate string in the key field */
+ if (key.data != NULL)
+ free(key.data);
+
+ /* free any memory allocated to the data field. */
+ if (data.data != NULL)
+ free(data.data);
+
+ /* get rid of zone_cursor */
+ if (zone_cursor != NULL)
+ zone_cursor->c_close(zone_cursor);
+
+ return result;
+}
+
+static isc_result_t
+bdb_lookup(const char *zone, const char *name, void *driverarg,
+ void *dbdata, dns_sdlzlookup_t *lookup,
+ dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo)
+{
+
+ isc_result_t result = ISC_R_NOTFOUND;
+ bdb_instance_t *db = (bdb_instance_t *) dbdata;
+ DBC *zone_cursor = NULL;
+ DBC *host_cursor = NULL;
+ DBC *join_cursor = NULL;
+ DBT key, data;
+ DBC *cur_arr[3];
+ int bdbres;
+ parsed_data_t pd;
+ char *tmp_zone, *tmp_host = NULL;
+ char *tmp = NULL;
+
+ UNUSED(driverarg);
+ UNUSED(methods);
+ UNUSED(clientinfo);
+
+ memset(&key, 0, sizeof(DBT));
+ memset(&data, 0, sizeof(DBT));
+
+ /* set zone key */
+ key.data = tmp_zone = strdup(zone);
+ if (key.data == NULL) {
+ result = ISC_R_NOMEMORY;
+ goto lookup_cleanup;
+ }
+ key.size = strlen(key.data);
+
+ /* get a cursor to loop through zone data */
+ if (db->zone->cursor(db->zone, NULL, &zone_cursor, 0) != 0) {
+ result = ISC_R_FAILURE;
+ goto lookup_cleanup;
+ }
+
+ /* initialize zone_cursor with zone_key */
+ if (zone_cursor->c_get(zone_cursor, &key, &data, DB_SET) != 0) {
+ result = ISC_R_NOTFOUND;
+ goto lookup_cleanup;
+ }
+
+ /* set host key */
+ key.data = tmp_host = strdup(name);
+ if (key.data == NULL) {
+ result = ISC_R_NOMEMORY;
+ goto lookup_cleanup;
+ }
+ key.size = strlen(key.data);
+
+ /* get a cursor to loop through host data */
+ if (db->host->cursor(db->host, NULL, &host_cursor, 0) != 0) {
+ result = ISC_R_FAILURE;
+ goto lookup_cleanup;
+ }
+
+ /* initialize host_cursor with host_key */
+ if (host_cursor->c_get(host_cursor, &key, &data, DB_SET) != 0) {
+ result = ISC_R_NOTFOUND;
+ goto lookup_cleanup;
+ }
+
+ cur_arr[0] = zone_cursor;
+ cur_arr[1] = host_cursor;
+ cur_arr[2] = NULL;
+
+ db->data->join(db->data, cur_arr, &join_cursor, 0);
+
+ while ((bdbres = join_cursor->c_get(join_cursor, &key,
+ &data, 0)) == 0) {
+
+ tmp = realloc(tmp, data.size + 1);
+ if (tmp == NULL)
+ goto lookup_cleanup;
+
+ strncpy(tmp, data.data, data.size);
+ tmp[data.size] = '\0';
+
+ if (bdb_parse_data(tmp, &pd) != ISC_R_SUCCESS)
+ goto lookup_cleanup;
+
+ result = dns_sdlz_putrr(lookup, pd.type, pd.ttl, pd.data);
+
+ if (result != ISC_R_SUCCESS)
+ goto lookup_cleanup;
+ } /* end while loop */
+
+ lookup_cleanup:
+
+ if (tmp != NULL)
+ free(tmp);
+ if (tmp_zone != NULL)
+ free(tmp_zone);
+ if (tmp_host != NULL)
+ free(tmp_host);
+
+ /* get rid of the joined cusor */
+ if (join_cursor != NULL)
+ join_cursor->c_close(join_cursor);
+
+ /* get rid of zone_cursor */
+ if (zone_cursor != NULL)
+ zone_cursor->c_close(zone_cursor);
+
+ /* get rid of host_cursor */
+ if (host_cursor != NULL)
+ host_cursor->c_close(host_cursor);
+
+ return result;
+}
+
+
+/*% Initializes, sets flags and then opens Berkeley databases. */
+
+static isc_result_t
+bdb_opendb(DB_ENV *db_env, DBTYPE db_type, DB **db, const char *db_name,
+ char *db_file, int flags) {
+
+ int result;
+
+ /* Initialize the database. */
+ if ((result = db_create(db, db_env, 0)) != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB could not initialize %s database. "
+ "BDB error: %s",
+ db_name, db_strerror(result));
+ return ISC_R_FAILURE;
+ }
+
+ /* set database flags. */
+ if ((result = (*db)->set_flags(*db, flags)) != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB could not set flags for %s database. "
+ "BDB error: %s",
+ db_name, db_strerror(result));
+ return ISC_R_FAILURE;
+ }
+
+ /* open the database. */
+ if ((result = (*db)->open(*db, NULL, db_file, db_name, db_type,
+ DB_RDONLY | bdb_threads, 0)) != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB could not open %s database in %s. "
+ "BDB error: %s",
+ db_name, db_file, db_strerror(result));
+ return ISC_R_FAILURE;
+ }
+
+ return ISC_R_SUCCESS;
+}
+
+static isc_result_t
+bdb_create(const char *dlzname, unsigned int argc, char *argv[],
+ void *driverarg, void **dbdata)
+{
+ isc_result_t result;
+ int bdbres;
+ bdb_instance_t *db = NULL;
+
+ UNUSED(dlzname);
+ UNUSED(driverarg);
+
+ /* verify we have 3 arg's passed to the driver */
+ if (argc != 3) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "Berkeley DB driver requires at least "
+ "2 command line args.");
+ return (ISC_R_FAILURE);
+ }
+
+ /* allocate and zero memory for driver structure */
+ db = isc_mem_get(ns_g_mctx, sizeof(bdb_instance_t));
+ if (db == NULL) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "Could not allocate memory for "
+ "database instance object.");
+ return (ISC_R_NOMEMORY);
+ }
+ memset(db, 0, sizeof(bdb_instance_t));
+
+ /* attach to the memory context */
+ isc_mem_attach(ns_g_mctx, &db->mctx);
+
+ /* create BDB environment
+ * Basically BDB allocates and assigns memory to db->dbenv
+ */
+ bdbres = db_env_create(&db->dbenv, 0);
+ if (bdbres != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB environment could not be created. "
+ "BDB error: %s",
+ db_strerror(bdbres));
+ result = ISC_R_FAILURE;
+ goto init_cleanup;
+ }
+
+ /* open BDB environment */
+ bdbres = db->dbenv->open(db->dbenv, argv[1],
+ DB_INIT_CDB | DB_INIT_MPOOL |
+ bdb_threads | DB_CREATE,
+ 0);
+ if (bdbres != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB environment at '%s' could not be opened. "
+ "BDB error: %s",
+ argv[1], db_strerror(bdbres));
+ result = ISC_R_FAILURE;
+ goto init_cleanup;
+ }
+
+ /* open dlz_data database. */
+ result = bdb_opendb(db->dbenv, DB_UNKNOWN, &db->data,
+ dlz_data, argv[2], 0);
+ if (result != ISC_R_SUCCESS)
+ goto init_cleanup;
+
+ /* open dlz_host database. */
+ result = bdb_opendb(db->dbenv, DB_UNKNOWN, &db->host,
+ dlz_host, argv[2],
+ DB_DUP | DB_DUPSORT);
+ if (result != ISC_R_SUCCESS)
+ goto init_cleanup;
+
+ /* open dlz_zone database. */
+ result = bdb_opendb(db->dbenv, DB_UNKNOWN, &db->zone,
+ dlz_zone, argv[2],
+ DB_DUP | DB_DUPSORT);
+ if (result != ISC_R_SUCCESS)
+ goto init_cleanup;
+
+ /* open dlz_client database. */
+ result = bdb_opendb(db->dbenv, DB_UNKNOWN, &db->client,
+ dlz_client, argv[2], DB_DUP | DB_DUPSORT);
+ if (result != ISC_R_SUCCESS)
+ goto init_cleanup;
+
+ /* associate the host secondary database with the primary database */
+ bdbres = db->data->associate(db->data, NULL, db->host, NULL, 0);
+ if (bdbres != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB could not associate %s database with %s. "
+ "BDB error: %s",
+ dlz_host, dlz_data, db_strerror(bdbres));
+ result = ISC_R_FAILURE;
+ goto init_cleanup;
+ }
+
+ /* associate the zone secondary database with the primary database */
+ bdbres = db->data->associate(db->data, NULL, db->zone, NULL, 0);
+ if (bdbres != 0) {
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_ERROR,
+ "BDB could not associate %s database with %s. "
+ "BDB error: %s",
+ dlz_zone, dlz_data, db_strerror(bdbres));
+ result = ISC_R_FAILURE;
+ goto init_cleanup;
+ }
+
+ *dbdata = db;
+
+ return(ISC_R_SUCCESS);
+
+ init_cleanup:
+
+ bdb_cleanup(db);
+ return result;
+}
+
+static void
+bdb_destroy(void *driverarg, void *dbdata)
+{
+ UNUSED(driverarg);
+
+ bdb_cleanup((bdb_instance_t *) dbdata);
+}
+
+/* bdb_authority not needed as authority data is returned by lookup */
+static dns_sdlzmethods_t dlz_bdb_methods = {
+ bdb_create,
+ bdb_destroy,
+ bdb_findzone,
+ bdb_lookup,
+ NULL,
+ bdb_allnodes,
+ bdb_allowzonexfr,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+ NULL,
+};
+
+/*%
+ * Wrapper around dns_sdlzregister().
+ */
+isc_result_t
+dlz_bdb_init(void) {
+ isc_result_t result;
+
+ /*
+ * Write debugging message to log
+ */
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2),
+ "Registering DLZ bdb driver.");
+
+ result = dns_sdlzregister("bdb", &dlz_bdb_methods, NULL,
+ DNS_SDLZFLAG_RELATIVEOWNER |
+ DNS_SDLZFLAG_RELATIVERDATA |
+ DNS_SDLZFLAG_THREADSAFE,
+ ns_g_mctx, &dlz_bdb);
+ if (result != ISC_R_SUCCESS) {
+ UNEXPECTED_ERROR(__FILE__, __LINE__,
+ "dns_sdlzregister() failed: %s",
+ isc_result_totext(result));
+ result = ISC_R_UNEXPECTED;
+ }
+
+
+ return result;
+}
+
+/*%
+ * Wrapper around dns_sdlzunregister().
+ */
+void
+dlz_bdb_clear(void) {
+
+ /*
+ * Write debugging message to log
+ */
+ isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE,
+ DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2),
+ "Unregistering DLZ bdb driver.");
+
+ if (dlz_bdb != NULL)
+ dns_sdlzunregister(&dlz_bdb);
+}
+
+#endif
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 21:35:59 +0000