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e95afbf2cc
OpenDTU-old/src/WebApi_mqtt.cpp
Thomas Basler e95afbf2cc Use references instead of pointers whenver possible
2023-12-12 13:26:07 +01:00

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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (C) 2022-2023 Thomas Basler and others
*/
#include "WebApi_mqtt.h"
#include "Configuration.h"
#include "MqttHandleHass.h"
#include "MqttSettings.h"
#include "WebApi.h"
#include "WebApi_errors.h"
#include "helper.h"
#include <AsyncJson.h>
void WebApiMqttClass::init(AsyncWebServer& server)
{
using std::placeholders::_1;
_server = &server;
_server->on("/api/mqtt/status", HTTP_GET, std::bind(&WebApiMqttClass::onMqttStatus, this, _1));
_server->on("/api/mqtt/config", HTTP_GET, std::bind(&WebApiMqttClass::onMqttAdminGet, this, _1));
_server->on("/api/mqtt/config", HTTP_POST, std::bind(&WebApiMqttClass::onMqttAdminPost, this, _1));
}
void WebApiMqttClass::loop()
{
}
void WebApiMqttClass::onMqttStatus(AsyncWebServerRequest* request)
{
if (!WebApi.checkCredentialsReadonly(request)) {
return;
}
AsyncJsonResponse* response = new AsyncJsonResponse(false, MQTT_JSON_DOC_SIZE);
JsonObject root = response->getRoot();
const CONFIG_T& config = Configuration.get();
root["mqtt_enabled"] = config.Mqtt.Enabled;
root["mqtt_hostname"] = config.Mqtt.Hostname;
root["mqtt_port"] = config.Mqtt.Port;
root["mqtt_username"] = config.Mqtt.Username;
root["mqtt_topic"] = config.Mqtt.Topic;
root["mqtt_connected"] = MqttSettings.getConnected();
root["mqtt_retain"] = config.Mqtt.Retain;
root["mqtt_tls"] = config.Mqtt.Tls.Enabled;
root["mqtt_root_ca_cert_info"] = getTlsCertInfo(config.Mqtt.Tls.RootCaCert);
root["mqtt_tls_cert_login"] = config.Mqtt.Tls.CertLogin;
root["mqtt_client_cert_info"] = getTlsCertInfo(config.Mqtt.Tls.ClientCert);
root["mqtt_lwt_topic"] = String(config.Mqtt.Topic) + config.Mqtt.Lwt.Topic;
root["mqtt_publish_interval"] = config.Mqtt.PublishInterval;
root["mqtt_clean_session"] = config.Mqtt.CleanSession;
root["mqtt_hass_enabled"] = config.Mqtt.Hass.Enabled;
root["mqtt_hass_expire"] = config.Mqtt.Hass.Expire;
root["mqtt_hass_retain"] = config.Mqtt.Hass.Retain;
root["mqtt_hass_topic"] = config.Mqtt.Hass.Topic;
root["mqtt_hass_individualpanels"] = config.Mqtt.Hass.IndividualPanels;
response->setLength();
request->send(response);
}
void WebApiMqttClass::onMqttAdminGet(AsyncWebServerRequest* request)
{
if (!WebApi.checkCredentials(request)) {
return;
}
AsyncJsonResponse* response = new AsyncJsonResponse(false, MQTT_JSON_DOC_SIZE);
JsonObject root = response->getRoot();
const CONFIG_T& config = Configuration.get();
root["mqtt_enabled"] = config.Mqtt.Enabled;
root["mqtt_hostname"] = config.Mqtt.Hostname;
root["mqtt_port"] = config.Mqtt.Port;
root["mqtt_username"] = config.Mqtt.Username;
root["mqtt_password"] = config.Mqtt.Password;
root["mqtt_topic"] = config.Mqtt.Topic;
root["mqtt_retain"] = config.Mqtt.Retain;
root["mqtt_tls"] = config.Mqtt.Tls.Enabled;
root["mqtt_root_ca_cert"] = config.Mqtt.Tls.RootCaCert;
root["mqtt_tls_cert_login"] = config.Mqtt.Tls.CertLogin;
root["mqtt_client_cert"] = config.Mqtt.Tls.ClientCert;
root["mqtt_client_key"] = config.Mqtt.Tls.ClientKey;
root["mqtt_lwt_topic"] = config.Mqtt.Lwt.Topic;
root["mqtt_lwt_online"] = config.Mqtt.CleanSession;
root["mqtt_lwt_offline"] = config.Mqtt.Lwt.Value_Offline;
root["mqtt_lwt_qos"] = config.Mqtt.Lwt.Qos;
root["mqtt_publish_interval"] = config.Mqtt.PublishInterval;
root["mqtt_clean_session"] = config.Mqtt.CleanSession;
root["mqtt_hass_enabled"] = config.Mqtt.Hass.Enabled;
root["mqtt_hass_expire"] = config.Mqtt.Hass.Expire;
root["mqtt_hass_retain"] = config.Mqtt.Hass.Retain;
root["mqtt_hass_topic"] = config.Mqtt.Hass.Topic;
root["mqtt_hass_individualpanels"] = config.Mqtt.Hass.IndividualPanels;
response->setLength();
request->send(response);
}
void WebApiMqttClass::onMqttAdminPost(AsyncWebServerRequest* request)
{
if (!WebApi.checkCredentials(request)) {
return;
}
AsyncJsonResponse* response = new AsyncJsonResponse(false, MQTT_JSON_DOC_SIZE);
JsonObject retMsg = response->getRoot();
retMsg["type"] = "warning";
if (!request->hasParam("data", true)) {
retMsg["message"] = "No values found!";
retMsg["code"] = WebApiError::GenericNoValueFound;
response->setLength();
request->send(response);
return;
}
const String json = request->getParam("data", true)->value();
if (json.length() > MQTT_JSON_DOC_SIZE) {
retMsg["message"] = "Data too large!";
retMsg["code"] = WebApiError::GenericDataTooLarge;
response->setLength();
request->send(response);
return;
}
DynamicJsonDocument root(MQTT_JSON_DOC_SIZE);
const DeserializationError error = deserializeJson(root, json);
if (error) {
retMsg["message"] = "Failed to parse data!";
retMsg["code"] = WebApiError::GenericParseError;
response->setLength();
request->send(response);
return;
}
if (!(root.containsKey("mqtt_enabled")
&& root.containsKey("mqtt_hostname")
&& root.containsKey("mqtt_port")
&& root.containsKey("mqtt_username")
&& root.containsKey("mqtt_password")
&& root.containsKey("mqtt_topic")
&& root.containsKey("mqtt_retain")
&& root.containsKey("mqtt_tls")
&& root.containsKey("mqtt_tls_cert_login")
&& root.containsKey("mqtt_client_cert")
&& root.containsKey("mqtt_client_key")
&& root.containsKey("mqtt_lwt_topic")
&& root.containsKey("mqtt_lwt_online")
&& root.containsKey("mqtt_lwt_offline")
&& root.containsKey("mqtt_lwt_qos")
&& root.containsKey("mqtt_publish_interval")
&& root.containsKey("mqtt_clean_session")
&& root.containsKey("mqtt_hass_enabled")
&& root.containsKey("mqtt_hass_expire")
&& root.containsKey("mqtt_hass_retain")
&& root.containsKey("mqtt_hass_topic")
&& root.containsKey("mqtt_hass_individualpanels"))) {
retMsg["message"] = "Values are missing!";
retMsg["code"] = WebApiError::GenericValueMissing;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_enabled"].as<bool>()) {
if (root["mqtt_hostname"].as<String>().length() == 0 || root["mqtt_hostname"].as<String>().length() > MQTT_MAX_HOSTNAME_STRLEN) {
retMsg["message"] = "MqTT Server must between 1 and " STR(MQTT_MAX_HOSTNAME_STRLEN) " characters long!";
retMsg["code"] = WebApiError::MqttHostnameLength;
retMsg["param"]["max"] = MQTT_MAX_HOSTNAME_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_username"].as<String>().length() > MQTT_MAX_USERNAME_STRLEN) {
retMsg["message"] = "Username must not be longer than " STR(MQTT_MAX_USERNAME_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttUsernameLength;
retMsg["param"]["max"] = MQTT_MAX_USERNAME_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_password"].as<String>().length() > MQTT_MAX_PASSWORD_STRLEN) {
retMsg["message"] = "Password must not be longer than " STR(MQTT_MAX_PASSWORD_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttPasswordLength;
retMsg["param"]["max"] = MQTT_MAX_PASSWORD_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_topic"].as<String>().length() > MQTT_MAX_TOPIC_STRLEN) {
retMsg["message"] = "Topic must not be longer than " STR(MQTT_MAX_TOPIC_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttTopicLength;
retMsg["param"]["max"] = MQTT_MAX_TOPIC_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_topic"].as<String>().indexOf(' ') != -1) {
retMsg["message"] = "Topic must not contain space characters!";
retMsg["code"] = WebApiError::MqttTopicCharacter;
response->setLength();
request->send(response);
return;
}
if (!root["mqtt_topic"].as<String>().endsWith("/")) {
retMsg["message"] = "Topic must end with a slash (/)!";
retMsg["code"] = WebApiError::MqttTopicTrailingSlash;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_port"].as<uint>() == 0 || root["mqtt_port"].as<uint>() > 65535) {
retMsg["message"] = "Port must be a number between 1 and 65535!";
retMsg["code"] = WebApiError::MqttPort;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_root_ca_cert"].as<String>().length() > MQTT_MAX_CERT_STRLEN
|| root["mqtt_client_cert"].as<String>().length() > MQTT_MAX_CERT_STRLEN
|| root["mqtt_client_key"].as<String>().length() > MQTT_MAX_CERT_STRLEN) {
retMsg["message"] = "Certificates must not be longer than " STR(MQTT_MAX_CERT_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttCertificateLength;
retMsg["param"]["max"] = MQTT_MAX_CERT_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_lwt_topic"].as<String>().length() > MQTT_MAX_TOPIC_STRLEN) {
retMsg["message"] = "LWT topic must not be longer than " STR(MQTT_MAX_TOPIC_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttLwtTopicLength;
retMsg["param"]["max"] = MQTT_MAX_TOPIC_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_lwt_topic"].as<String>().indexOf(' ') != -1) {
retMsg["message"] = "LWT topic must not contain space characters!";
retMsg["code"] = WebApiError::MqttLwtTopicCharacter;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_lwt_online"].as<String>().length() > MQTT_MAX_LWTVALUE_STRLEN) {
retMsg["message"] = "LWT online value must not be longer than " STR(MQTT_MAX_LWTVALUE_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttLwtOnlineLength;
retMsg["param"]["max"] = MQTT_MAX_LWTVALUE_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_lwt_offline"].as<String>().length() > MQTT_MAX_LWTVALUE_STRLEN) {
retMsg["message"] = "LWT offline value must not be longer than " STR(MQTT_MAX_LWTVALUE_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttLwtOfflineLength;
retMsg["param"]["max"] = MQTT_MAX_LWTVALUE_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_lwt_qos"].as<uint8_t>() > 2) {
retMsg["message"] = "LWT QoS must not be greater than " STR(2) "!";
retMsg["code"] = WebApiError::MqttLwtQos;
retMsg["param"]["max"] = 2;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_publish_interval"].as<uint32_t>() < 5 || root["mqtt_publish_interval"].as<uint32_t>() > 65535) {
retMsg["message"] = "Publish interval must be a number between 5 and 65535!";
retMsg["code"] = WebApiError::MqttPublishInterval;
retMsg["param"]["min"] = 5;
retMsg["param"]["max"] = 65535;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_hass_enabled"].as<bool>()) {
if (root["mqtt_hass_topic"].as<String>().length() > MQTT_MAX_TOPIC_STRLEN) {
retMsg["message"] = "Hass topic must not be longer than " STR(MQTT_MAX_TOPIC_STRLEN) " characters!";
retMsg["code"] = WebApiError::MqttHassTopicLength;
retMsg["param"]["max"] = MQTT_MAX_TOPIC_STRLEN;
response->setLength();
request->send(response);
return;
}
if (root["mqtt_hass_topic"].as<String>().indexOf(' ') != -1) {
retMsg["message"] = "Hass topic must not contain space characters!";
retMsg["code"] = WebApiError::MqttHassTopicCharacter;
response->setLength();
request->send(response);
return;
}
}
}
CONFIG_T& config = Configuration.get();
config.Mqtt.Enabled = root["mqtt_enabled"].as<bool>();
config.Mqtt.Retain = root["mqtt_retain"].as<bool>();
config.Mqtt.Tls.Enabled = root["mqtt_tls"].as<bool>();
strlcpy(config.Mqtt.Tls.RootCaCert, root["mqtt_root_ca_cert"].as<String>().c_str(), sizeof(config.Mqtt.Tls.RootCaCert));
config.Mqtt.Tls.CertLogin = root["mqtt_tls_cert_login"].as<bool>();
strlcpy(config.Mqtt.Tls.ClientCert, root["mqtt_client_cert"].as<String>().c_str(), sizeof(config.Mqtt.Tls.ClientCert));
strlcpy(config.Mqtt.Tls.ClientKey, root["mqtt_client_key"].as<String>().c_str(), sizeof(config.Mqtt.Tls.ClientKey));
config.Mqtt.Port = root["mqtt_port"].as<uint>();
strlcpy(config.Mqtt.Hostname, root["mqtt_hostname"].as<String>().c_str(), sizeof(config.Mqtt.Hostname));
strlcpy(config.Mqtt.Username, root["mqtt_username"].as<String>().c_str(), sizeof(config.Mqtt.Username));
strlcpy(config.Mqtt.Password, root["mqtt_password"].as<String>().c_str(), sizeof(config.Mqtt.Password));
strlcpy(config.Mqtt.Topic, root["mqtt_topic"].as<String>().c_str(), sizeof(config.Mqtt.Topic));
strlcpy(config.Mqtt.Lwt.Topic, root["mqtt_lwt_topic"].as<String>().c_str(), sizeof(config.Mqtt.Lwt.Topic));
strlcpy(config.Mqtt.Lwt.Value_Online, root["mqtt_lwt_online"].as<String>().c_str(), sizeof(config.Mqtt.Lwt.Value_Online));
strlcpy(config.Mqtt.Lwt.Value_Offline, root["mqtt_lwt_offline"].as<String>().c_str(), sizeof(config.Mqtt.Lwt.Value_Offline));
config.Mqtt.Lwt.Qos = root["mqtt_lwt_qos"].as<uint8_t>();
config.Mqtt.PublishInterval = root["mqtt_publish_interval"].as<uint32_t>();
config.Mqtt.CleanSession = root["mqtt_clean_session"].as<bool>();
config.Mqtt.Hass.Enabled = root["mqtt_hass_enabled"].as<bool>();
config.Mqtt.Hass.Expire = root["mqtt_hass_expire"].as<bool>();
config.Mqtt.Hass.Retain = root["mqtt_hass_retain"].as<bool>();
config.Mqtt.Hass.IndividualPanels = root["mqtt_hass_individualpanels"].as<bool>();
strlcpy(config.Mqtt.Hass.Topic, root["mqtt_hass_topic"].as<String>().c_str(), sizeof(config.Mqtt.Hass.Topic));
Configuration.write();
retMsg["type"] = "success";
retMsg["message"] = "Settings saved!";
retMsg["code"] = WebApiError::GenericSuccess;
response->setLength();
request->send(response);
MqttSettings.performReconnect();
MqttHandleHass.forceUpdate();
}
String WebApiMqttClass::getTlsCertInfo(const char* cert)
{
char tlsCertInfo[1024] = "";
mbedtls_x509_crt tlsCert;
strlcpy(tlsCertInfo, "Can't parse TLS certificate", sizeof(tlsCertInfo));
mbedtls_x509_crt_init(&tlsCert);
int ret = mbedtls_x509_crt_parse(&tlsCert, const_cast<unsigned char*>((unsigned char*)cert), 1 + strlen(cert));
if (ret < 0) {
snprintf(tlsCertInfo, sizeof(tlsCertInfo), "Can't parse TLS certificate: mbedtls_x509_crt_parse returned -0x%x\n\n", -ret);
mbedtls_x509_crt_free(&tlsCert);
return "";
}
mbedtls_x509_crt_info(tlsCertInfo, sizeof(tlsCertInfo) - 1, "", &tlsCert);
mbedtls_x509_crt_free(&tlsCert);
return tlsCertInfo;
}
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