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239 lines
9.0 KiB
C
239 lines
9.0 KiB
C
/*
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Copyright (c) 2020-2021 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 <cjson/cJSON.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 "json_help.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 "dynamic_security.h"
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void dynsec__command_reply(cJSON *j_responses, struct mosquitto *context, const char *command, const char *error, const char *correlation_data)
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{
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cJSON *j_response;
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UNUSED(context);
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j_response = cJSON_CreateObject();
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if(j_response == NULL) return;
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if(cJSON_AddStringToObject(j_response, "command", command) == NULL
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|| (error && cJSON_AddStringToObject(j_response, "error", error) == NULL)
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|| (correlation_data && cJSON_AddStringToObject(j_response, "correlationData", correlation_data) == NULL)
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){
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cJSON_Delete(j_response);
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return;
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}
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cJSON_AddItemToArray(j_responses, j_response);
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}
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static void send_response(cJSON *tree)
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{
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char *payload;
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size_t payload_len;
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payload = cJSON_PrintUnformatted(tree);
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cJSON_Delete(tree);
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if(payload == NULL) return;
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payload_len = strlen(payload);
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if(payload_len > MQTT_MAX_PAYLOAD){
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free(payload);
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return;
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}
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mosquitto_broker_publish(NULL, "$CONTROL/dynamic-security/v1/response",
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(int)payload_len, payload, 0, 0, NULL);
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}
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int dynsec_control_callback(int event, void *event_data, void *userdata)
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{
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struct mosquitto_evt_control *ed = event_data;
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cJSON *tree, *commands;
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cJSON *j_response_tree, *j_responses;
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UNUSED(event);
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UNUSED(userdata);
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/* Create object for responses */
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j_response_tree = cJSON_CreateObject();
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if(j_response_tree == NULL){
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return MOSQ_ERR_NOMEM;
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}
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j_responses = cJSON_CreateArray();
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if(j_responses == NULL){
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cJSON_Delete(j_response_tree);
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return MOSQ_ERR_NOMEM;
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}
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cJSON_AddItemToObject(j_response_tree, "responses", j_responses);
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/* Parse cJSON tree.
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* Using cJSON_ParseWithLength() is the best choice here, but Mosquitto
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* always adds an extra 0 to the end of the payload memory, so using
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* cJSON_Parse() on its own will still not overrun. */
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#if CJSON_VERSION_FULL < 1007013
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tree = cJSON_Parse(ed->payload);
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#else
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tree = cJSON_ParseWithLength(ed->payload, ed->payloadlen);
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#endif
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if(tree == NULL){
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dynsec__command_reply(j_responses, ed->client, "Unknown command", "Payload not valid JSON", NULL);
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send_response(j_response_tree);
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return MOSQ_ERR_SUCCESS;
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}
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commands = cJSON_GetObjectItem(tree, "commands");
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if(commands == NULL || !cJSON_IsArray(commands)){
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cJSON_Delete(tree);
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dynsec__command_reply(j_responses, ed->client, "Unknown command", "Invalid/missing commands", NULL);
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send_response(j_response_tree);
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return MOSQ_ERR_SUCCESS;
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}
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/* Handle commands */
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dynsec__handle_control(j_responses, ed->client, commands);
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cJSON_Delete(tree);
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send_response(j_response_tree);
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return MOSQ_ERR_SUCCESS;
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}
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/* ################################################################
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* #
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* # $CONTROL/dynamic-security/v1 handler
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* #
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* ################################################################ */
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int dynsec__handle_control(cJSON *j_responses, struct mosquitto *context, cJSON *commands)
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{
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int rc = MOSQ_ERR_SUCCESS;
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cJSON *aiter;
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char *command;
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char *correlation_data = NULL;
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cJSON_ArrayForEach(aiter, commands){
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if(cJSON_IsObject(aiter)){
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if(json_get_string(aiter, "command", &command, false) == MOSQ_ERR_SUCCESS){
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if(json_get_string(aiter, "correlationData", &correlation_data, true) != MOSQ_ERR_SUCCESS){
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dynsec__command_reply(j_responses, context, command, "Invalid correlationData data type.", NULL);
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return MOSQ_ERR_INVAL;
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}
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/* Plugin */
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if(!strcasecmp(command, "setDefaultACLAccess")){
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rc = dynsec__process_set_default_acl_access(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "getDefaultACLAccess")){
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rc = dynsec__process_get_default_acl_access(j_responses, context, aiter, correlation_data);
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/* Clients */
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}else if(!strcasecmp(command, "createClient")){
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rc = dynsec_clients__process_create(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "deleteClient")){
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rc = dynsec_clients__process_delete(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "getClient")){
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rc = dynsec_clients__process_get(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "listClients")){
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rc = dynsec_clients__process_list(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "modifyClient")){
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rc = dynsec_clients__process_modify(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "setClientPassword")){
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rc = dynsec_clients__process_set_password(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "setClientId")){
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rc = dynsec_clients__process_set_id(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "addClientRole")){
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rc = dynsec_clients__process_add_role(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "removeClientRole")){
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rc = dynsec_clients__process_remove_role(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "enableClient")){
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rc = dynsec_clients__process_enable(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "disableClient")){
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rc = dynsec_clients__process_disable(j_responses, context, aiter, correlation_data);
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/* Groups */
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}else if(!strcasecmp(command, "addGroupClient")){
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rc = dynsec_groups__process_add_client(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "createGroup")){
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rc = dynsec_groups__process_create(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "deleteGroup")){
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rc = dynsec_groups__process_delete(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "getGroup")){
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rc = dynsec_groups__process_get(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "listGroups")){
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rc = dynsec_groups__process_list(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "modifyGroup")){
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rc = dynsec_groups__process_modify(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "removeGroupClient")){
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rc = dynsec_groups__process_remove_client(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "addGroupRole")){
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rc = dynsec_groups__process_add_role(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "removeGroupRole")){
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rc = dynsec_groups__process_remove_role(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "setAnonymousGroup")){
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rc = dynsec_groups__process_set_anonymous_group(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "getAnonymousGroup")){
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rc = dynsec_groups__process_get_anonymous_group(j_responses, context, aiter, correlation_data);
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/* Roles */
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}else if(!strcasecmp(command, "createRole")){
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rc = dynsec_roles__process_create(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "getRole")){
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rc = dynsec_roles__process_get(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "listRoles")){
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rc = dynsec_roles__process_list(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "modifyRole")){
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rc = dynsec_roles__process_modify(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "deleteRole")){
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rc = dynsec_roles__process_delete(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "addRoleACL")){
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rc = dynsec_roles__process_add_acl(j_responses, context, aiter, correlation_data);
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}else if(!strcasecmp(command, "removeRoleACL")){
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rc = dynsec_roles__process_remove_acl(j_responses, context, aiter, correlation_data);
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/* Unknown */
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}else{
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dynsec__command_reply(j_responses, context, command, "Unknown command", correlation_data);
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rc = MOSQ_ERR_INVAL;
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}
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}else{
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dynsec__command_reply(j_responses, context, "Unknown command", "Missing command", correlation_data);
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rc = MOSQ_ERR_INVAL;
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}
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}else{
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dynsec__command_reply(j_responses, context, "Unknown command", "Command not an object", correlation_data);
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rc = MOSQ_ERR_INVAL;
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}
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}
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return rc;
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}
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