Added authentication in the sample

examples/uMQTTBrokerSample/uMQTTBrokerSample.ino

@@ -8,18 +8,23 @@
 #include <ESP8266WiFi.h>
 
 #include "uMQTTBroker.h"
+#include "espconn.h"
 
 /*
  * Your WiFi config here
  */
-char ssid[] = "MySSID";  	// your network SSID (name)
-char pass[] = "MyPassword";	// your network password
+char ssid[] = "ssid";  	// your network SSID (name)
+char pass[] = "password";	// your network password
 
 
 unsigned int mqttPort = 1883;       // the standard MQTT broker port
 unsigned int max_subscriptions = 30;
 unsigned int max_retained_topics = 30;
 
+/*
+ * Data callback: called on any locally subscribed topic
+ */
+
 void data_callback(uint32_t *client /* we can ignore this */, const char* topic, uint32_t topic_len, const char *data, uint32_t lengh) {
   char topic_str[topic_len+1];
   os_memcpy(topic_str, topic, topic_len);
@@ -29,11 +34,32 @@ void data_callback(uint32_t *client /* we can ignore this */, const char* topic,
   os_memcpy(data_str, data, lengh);
   data_str[lengh] = '\0';
 
-  Serial.print("received topic '");
-  Serial.print(topic_str);
-  Serial.print("' with data '");
-  Serial.print(data_str);
-  Serial.println("'");
+  Serial.println("received topic '"+(String)topic_str+"' with data '"+(String)data_str+"'");
+}
+
+/*
+ * Authentication callback: called on any valid connction request
+ * Returns true, if authorized
+ */
+ 
+bool auth_data_callback(const char* username, const char *password, struct espconn *pesp_conn){
+  Serial.print("Connect from: ");
+  Serial.print((String)pesp_conn->proto.tcp->remote_ip[0]+".");
+  Serial.print((String)pesp_conn->proto.tcp->remote_ip[1]+".");
+  Serial.print((String)pesp_conn->proto.tcp->remote_ip[2]+".");
+  Serial.println((String)pesp_conn->proto.tcp->remote_ip[3]);
+
+  Serial.println("Username/Pasword: "+(String)username+"/"+(String)password);
+
+/*
+ * Implement this,if you want to have username/password authentication
+ */
+//  if ((String)username == "root" &&  (String)password == "admin" ) {
+//    return true;
+//  }else{
+//    return false;
+//  }
+  return true;
 }
 
 void setup()
@@ -43,8 +69,7 @@ void setup()
   Serial.println();
 
   // We start by connecting to a WiFi network
-  Serial.print("Connecting to ");
-  Serial.println(ssid);
+  Serial.println("Connecting to "+(String)ssid);
   WiFi.begin(ssid, pass);
   
   while (WiFi.status() != WL_CONNECTED) {
@@ -54,13 +79,13 @@ void setup()
   Serial.println("");
   
   Serial.println("WiFi connected");
-  Serial.println("IP address: ");
-  Serial.println(WiFi.localIP());
+  Serial.println("IP address: "+WiFi.localIP().toString());
 
 /*
- * Register the callback
+ * Register the callbacks
  */
   MQTT_server_onData(data_callback);
+  MQTT_server_onAuth(auth_data_callback);
 
 /*
  * Start the broker
@@ -88,4 +113,3 @@ void loop()
   // wait a second
   delay(1000);
 }
-