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Add support for SSL/TLS #122

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81 changes: 74 additions & 7 deletions src/EspMQTTClient.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -16,47 +16,86 @@ EspMQTTClient::EspMQTTClient(
const char* mqttServerIp,
const uint16_t mqttServerPort,
const char* mqttClientName) :
EspMQTTClient(NULL, NULL, mqttServerIp, NULL, NULL, mqttClientName, mqttServerPort)
EspMQTTClient(NULL, NULL, mqttServerIp, NULL, NULL, NULL, NULL, NULL, mqttClientName, mqttServerPort, false)
{
}

/// Wifi + MQTT with no MQTT authentification
EspMQTTClient::EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttClientName,
const uint16_t mqttServerPort) :
EspMQTTClient(wifiSsid, wifiPassword, mqttServerIp, NULL, NULL, NULL, NULL, NULL, mqttClientName, mqttServerPort, false)

{
}

/// Only MQTT handling (no wifi), with MQTT authentification
EspMQTTClient::EspMQTTClient(
const char* mqttServerIp,
const uint16_t mqttServerPort,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttClientName) :
EspMQTTClient(NULL, NULL, mqttServerIp, mqttUsername, mqttPassword, mqttClientName, mqttServerPort)
EspMQTTClient(NULL, NULL, mqttServerIp, mqttUsername, mqttPassword, NULL, NULL, NULL, mqttClientName, mqttServerPort, false)
{
}

// Wifi and MQTT handling
/// Wifi + MQTT(S) (SSL unsecure) with MQTT authentification
EspMQTTClient::EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttClientName,
const uint16_t mqttServerPort) :
EspMQTTClient(wifiSsid, wifiPassword, mqttServerIp, NULL, NULL, mqttClientName, mqttServerPort)
const uint16_t mqttServerPort,
bool mqttSecure) :
EspMQTTClient(NULL, NULL, mqttServerIp, mqttUsername, mqttPassword, NULL, NULL, NULL, mqttClientName, mqttServerPort, mqttSecure)
{
}

/// Wifi + MQTT(S) (SSL with CA certificate) with MQTT authentification
EspMQTTClient::EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttRootCA,
const char* mqttClientName,
const uint16_t mqttServerPort) :
const uint16_t mqttServerPort,
bool mqttSecure) :
EspMQTTClient(NULL, NULL, mqttServerIp, mqttUsername, mqttPassword, mqttRootCA, NULL, NULL, mqttClientName, mqttServerPort, mqttSecure)
{
}

/// Wifi + MQTT(S) (with client certificate) with MQTT authentification
EspMQTTClient::EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttRootCA,
const char* mqttClientCertificate,
const char* mqttClientKey,
const char* mqttClientName,
const uint16_t mqttServerPort,
bool mqttSecure) :
_wifiSsid(wifiSsid),
_wifiPassword(wifiPassword),
_mqttServerIp(mqttServerIp),
_mqttUsername(mqttUsername),
_mqttPassword(mqttPassword),
_mqttRootCA(mqttRootCA),
_mqttClientCertificate(mqttClientCertificate),
_mqttClientKey(mqttClientKey),
_mqttClientName(mqttClientName),
_mqttServerPort(mqttServerPort),
_mqttClient(mqttServerIp, mqttServerPort, _wifiClient)
_mqttSecure(mqttSecure)
{
// WiFi connection
_handleWiFi = (wifiSsid != NULL);
Expand All @@ -67,6 +106,34 @@ EspMQTTClient::EspMQTTClient(
_wifiReconnectionAttemptDelay = 60 * 1000;

// MQTT client
if(!_mqttSecure)
// MQTT unsecure
{
_mqttClient.setServer(_mqttServerIp, _mqttServerPort);
_mqttClient.setClient(_wifiClient);
}
else
// MQTT with SSL
{
if(_mqttRootCA != NULL)
{
_wifiClientSecure.setCACert(_mqttRootCA); // Set CA certificate to validate MQTT server

if(_mqttClientCertificate != NULL && _mqttClientKey != NULL)
{
_wifiClientSecure.setCertificate(_mqttClientCertificate); // Set MQTT client SSL certificate
_wifiClientSecure.setPrivateKey(_mqttClientKey); // Set MQTT client SSL key
}
}
else
{
_wifiClientSecure.setInsecure(); // Don't check CA certificate just use the SSL channel
}
_mqttClient.setServer(_mqttServerIp, _mqttServerPort);
_mqttClient.setClient(_wifiClientSecure);
}


_mqttConnected = false;
_nextMqttConnectionAttemptMillis = 0;
_mqttReconnectionAttemptDelay = 15 * 1000; // 15 seconds of waiting between each mqtt reconnection attempts by default
Expand Down
56 changes: 46 additions & 10 deletions src/EspMQTTClient.h
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -8,6 +8,7 @@
#ifdef ESP8266

#include <ESP8266WiFi.h>
#include <WiFiClientSecure.h>
#include <ESP8266WebServer.h>
#include <ESP8266mDNS.h>
#include <ESP8266HTTPUpdateServer.h>
Expand All @@ -19,7 +20,9 @@

#else // for ESP32


#include <WiFiClient.h>
#include <WiFiClientSecure.h>
#include <WebServer.h>
#include <ESPmDNS.h>
#include "ESP32HTTPUpdateServer.h"
Expand Down Expand Up @@ -48,7 +51,9 @@ class EspMQTTClient
unsigned int _wifiReconnectionAttemptDelay;
const char* _wifiSsid;
const char* _wifiPassword;

WiFiClient _wifiClient;
WiFiClientSecure _wifiClientSecure;

// MQTT related
bool _mqttConnected;
Expand All @@ -57,8 +62,12 @@ class EspMQTTClient
const char* _mqttServerIp;
const char* _mqttUsername;
const char* _mqttPassword;
const char* _mqttRootCA;
const char* _mqttClientCertificate;
const char *_mqttClientKey;
const char* _mqttClientName;
uint16_t _mqttServerPort;
bool _mqttSecure;
bool _mqttCleanSession;
char* _mqttLastWillTopic;
char* _mqttLastWillMessage;
Expand Down Expand Up @@ -109,16 +118,6 @@ class EspMQTTClient
const char* mqttClientName = DEFAULT_MQTT_CLIENT_NAME,
const uint16_t mqttServerPort = 1883);

/// Wifi + MQTT with MQTT authentification
EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttClientName = DEFAULT_MQTT_CLIENT_NAME,
const uint16_t mqttServerPort = 1883);

/// Only MQTT handling (no wifi), with MQTT authentification
EspMQTTClient(
const char* mqttServerIp,
Expand All @@ -133,6 +132,43 @@ class EspMQTTClient
const uint16_t mqttServerPort,
const char* mqttClientName = DEFAULT_MQTT_CLIENT_NAME);

/// Wifi + MQTT(S) (SSL unsecure) with MQTT authentification
EspMQTTClient(
const char *wifiSsid,
const char *wifiPassword,
const char *mqttServerIp,
const char *mqttUsername,
const char *mqttPassword,
const char *mqttClientName,
const uint16_t mqttServerPort,
bool mqttSecure = false);

/// Wifi + MQTT(S) (SSL with CA certificate) with MQTT authentification
EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttRootCA,
const char* mqttClientName = DEFAULT_MQTT_CLIENT_NAME,
const uint16_t mqttServerPort = 1883,
bool mqttSecure = false);

/// Wifi + MQTT(S) (with client certificate) with MQTT authentification
EspMQTTClient(
const char* wifiSsid,
const char* wifiPassword,
const char* mqttServerIp,
const char* mqttUsername,
const char* mqttPassword,
const char* mqttRootCA,
const char* mqttClientCertificate,
const char* mqttClientKey,
const char* mqttClientName = DEFAULT_MQTT_CLIENT_NAME,
const uint16_t mqttServerPort = 1883,
bool mqttSecure = false);

~EspMQTTClient();

// Optional functionality
Expand Down