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167 lines
7.1 KiB
C
167 lines
7.1 KiB
C
/*
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Copyright (c) 2021 Roger Light <roger@atchoo.org>
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All rights reserved. This program and the accompanying materials
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are made available under the terms of the Eclipse Public License 2.0
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and Eclipse Distribution License v1.0 which accompany this distribution.
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The Eclipse Public License is available at
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https://www.eclipse.org/legal/epl-2.0/
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and the Eclipse Distribution License is available at
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http://www.eclipse.org/org/documents/edl-v10.php.
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SPDX-License-Identifier: EPL-2.0 OR BSD-3-Clause
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Contributors:
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Roger Light - initial implementation and documentation.
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*/
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#include "config.h"
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <sys/stat.h>
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#include "mosquitto.h"
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#include "mosquitto_broker.h"
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#include "mosquitto_plugin.h"
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#include "mqtt_protocol.h"
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#include "persist_sqlite.h"
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static mosquitto_plugin_id_t *plg_id = NULL;
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static struct mosquitto_sqlite plg_data;
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int mosquitto_plugin_version(int supported_version_count, const int *supported_versions)
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{
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int i;
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for(i=0; i<supported_version_count; i++){
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if(supported_versions[i] == 5){
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return 5;
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}
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}
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return -1;
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}
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int mosquitto_plugin_init(mosquitto_plugin_id_t *identifier, void **user_data, struct mosquitto_opt *options, int option_count)
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{
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int i;
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int rc;
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UNUSED(user_data);
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memset(&plg_data, 0,sizeof(struct mosquitto_sqlite));
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/* Default to "normal" synchronous mode. */
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plg_data.synchronous = 1;
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for(i=0; i<option_count; i++){
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if(!strcasecmp(options[i].key, "db_file")){
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plg_data.db_file = mosquitto_strdup(options[i].value);
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if(plg_data.db_file == NULL){
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return MOSQ_ERR_NOMEM;
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}
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break;
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}else if(!strcasecmp(options[i].key, "sync")){
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if(!strcasecmp(options[i].value, "extra")){
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plg_data.synchronous = 3;
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}else if(!strcasecmp(options[i].value, "full")){
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plg_data.synchronous = 2;
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}else if(!strcasecmp(options[i].value, "normal")){
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plg_data.synchronous = 1;
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}else if(!strcasecmp(options[i].value, "off")){
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plg_data.synchronous = 0;
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}else{
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mosquitto_log_printf(MOSQ_LOG_ERR, "Sqlite persistence: Invalid plugin_opt_sync value '%s'.", options[i].value);
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return MOSQ_ERR_INVAL;
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}
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}
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}
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if(plg_data.db_file == NULL){
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mosquitto_log_printf(MOSQ_LOG_WARNING, "Warning: Sqlite persistence plugin has no plugin_opt_db_file defined. The plugin will not be activated.");
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return MOSQ_ERR_SUCCESS;
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}
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rc = persist_sqlite__init(&plg_data);
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if(rc) return rc;
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plg_id = identifier;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_RESTORE, persist_sqlite__restore_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_MSG_ADD, persist_sqlite__msg_add_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_MSG_DELETE, persist_sqlite__msg_remove_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_MSG_LOAD, persist_sqlite__msg_load_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_RETAIN_ADD, persist_sqlite__retain_add_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_RETAIN_DELETE, persist_sqlite__retain_remove_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_ADD, persist_sqlite__client_add_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_DELETE, persist_sqlite__client_remove_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_UPDATE, persist_sqlite__client_update_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_SUBSCRIPTION_ADD, persist_sqlite__subscription_add_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_SUBSCRIPTION_DELETE, persist_sqlite__subscription_remove_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_ADD, persist_sqlite__client_msg_add_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_DELETE, persist_sqlite__client_msg_remove_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_UPDATE, persist_sqlite__client_msg_update_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_CLEAR, persist_sqlite__client_msg_clear_cb, NULL, &plg_data);
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if(rc) goto fail;
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rc = mosquitto_callback_register(plg_id, MOSQ_EVT_TICK, persist_sqlite__tick_cb, NULL, &plg_data);
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if(rc) goto fail;
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return MOSQ_ERR_SUCCESS;
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fail:
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if(rc == MOSQ_ERR_NOT_SUPPORTED){
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mosquitto_log_printf(MOSQ_LOG_ERR, "Sqlite persistence: Unable to register plugin: broker doesn't support persistence plugins, please upgrade to 2.1 or higher");
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}else if(rc == MOSQ_ERR_NOMEM){
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mosquitto_log_printf(MOSQ_LOG_ERR, "Sqlite persistence: Unable to register plugin: out of memory");
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}else{
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mosquitto_log_printf(MOSQ_LOG_ERR, "Sqlite persistence: Unable to register plugin (%d)", rc);
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}
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mosquitto_plugin_cleanup(NULL, NULL, 0);
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return rc;
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}
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int mosquitto_plugin_cleanup(void *user_data, struct mosquitto_opt *options, int option_count)
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{
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UNUSED(user_data);
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UNUSED(options);
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UNUSED(option_count);
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if(plg_id){
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_RESTORE, persist_sqlite__restore_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_MSG_ADD, persist_sqlite__msg_add_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_MSG_DELETE, persist_sqlite__msg_remove_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_MSG_LOAD, persist_sqlite__msg_load_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_RETAIN_ADD, persist_sqlite__retain_add_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_RETAIN_DELETE, persist_sqlite__retain_remove_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_ADD, persist_sqlite__client_add_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_DELETE, persist_sqlite__client_remove_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_SUBSCRIPTION_ADD, persist_sqlite__subscription_add_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_SUBSCRIPTION_DELETE, persist_sqlite__subscription_remove_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_ADD, persist_sqlite__client_msg_add_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_DELETE, persist_sqlite__client_msg_remove_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_UPDATE, persist_sqlite__client_msg_update_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_PERSIST_CLIENT_MSG_CLEAR, persist_sqlite__client_msg_clear_cb, NULL);
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mosquitto_callback_unregister(plg_id, MOSQ_EVT_TICK, persist_sqlite__tick_cb, NULL);
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}
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mosquitto_free(plg_data.db_file);
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persist_sqlite__cleanup(&plg_data);
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memset(&plg_data, 0, sizeof(struct mosquitto_sqlite));
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return MOSQ_ERR_SUCCESS;
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}
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