Basic Authentication

[Vinicius Trigo]

Hello,

I still a newbie in Arduino World, so I'm looking for some advice.

I made a server to automate my house using livolo switches and some other stuff, using HTML files from the SD Card using a Arduino UNO, and an W5100 Ethernet Shield... The code is already working fine (at least I think it is), but I'm having troubles trying to implement a Basic Authentication on the server, just to avoid people that may find the server by mistake / miss typing.

I'm trying to mix the code I already made (above), with the Webduino library (https://github.com/sirleech/Webduino) and the Web_Authentication example , but my programming skills aren't the best, and I can't figure it out.


Here is my code:

#include <SPI.h>
#include <Ethernet.h>
#include <EthernetUdp.h>
#include <SD.h>
#include <livolo.h>

#define REQ_BUF_SZ   20 // size of buffer used to capture HTTP requests
EthernetUDP Udp;
Livolo livolo(8); // transmitter connected to pin #8

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
byte TargetMac[] = {0x60, 0xA4, 0x4C, 0x63, 0x61, 0xD6};  // PC's MAC address
IPAddress ip(192, 168, 1, 5); // IP address, may need to change depending on network
byte broadcast[] = {192, 168, 1, 255};    // Broadcast IP address
EthernetServer server(80); // create a server at port 80
File webFile; // handle to files on SD card
char HTTP_req[REQ_BUF_SZ] = {0}; // buffered HTTP request stored as null terminated string
char req_index = 0; // index into HTTP_req buffer

void setup(){
  pinMode(10, OUTPUT); // disable Ethernet chip
  digitalWrite(10, HIGH);
  Serial.begin(9600); // for debugging
  Serial.println("Initializing SD card..."); // initialize SD card
  if (!SD.begin(4)) {
    Serial.println("ERROR - SD card initialization failed!"); // initialization failed
    return;
  }
  Serial.println("SUCCESS - SD card initialized.");
  if (!SD.exists("index.htm")) { // check for index.htm file
    Serial.println("ERROR - Can't find index.htm file!");
    return;  // can't find index file
  }
  Serial.println("SUCCESS - Found index.htm file.");
  Ethernet.begin(mac, ip); // initialize Ethernet device
  server.begin(); // start to listen for clients
  Udp.begin(9);
}
void loop(){
  EthernetClient client = server.available();  // try to get client
  if (client) {  // got client?
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) { // client data available to read
        char c = client.read(); // read 1 byte (character) from client
        Serial.write(c); // print HTTP request character to serial monitor
        if (req_index < (REQ_BUF_SZ - 1)) {
          HTTP_req[req_index] = c; // save HTTP request character
          req_index++;
        }
        if (c == '\n' && currentLineIsBlank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connnection: close");
          client.println();
          // if GET request
          if (StrContains(HTTP_req, "GET / ") || StrContains(HTTP_req, "index.htm")) {
            webFile = SD.open("index.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "1Andar.htm")) {
            webFile = SD.open("1Andar.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "2Andar.htm")) {
            webFile = SD.open("2Andar.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "3Andar.htm")) {
            webFile = SD.open("3Andar.htm"); // open web page file
          }
          // if POST request
          if (StrContains(HTTP_req, "POST /")){
            String POST = "";
            while(client.available()){
              c = client.read();
              POST += c;
            }
            if(StrContains(HTTP_req, "/livolo")) {
              String controlvalue = POST.substring(0, POST.indexOf('&'));
              String buttonvalue = POST.substring(POST.indexOf('&') + 1, POST.length());
              String control = controlvalue.substring(controlvalue.indexOf('=') + 1, controlvalue.length());
              String button = buttonvalue.substring(buttonvalue.indexOf('=') + 1, buttonvalue.length());
              livolo.sendButton(control.toInt(), button.toInt());
            }
            else if (POST != "") {
              String cmdname = POST.substring(0, POST.indexOf('&'));
              String cmdvalue = POST.substring(POST.indexOf('&') + 1, POST.length());
              String name = cmdname.substring(cmdname.indexOf('=') + 1, cmdname.length());
              String value = cmdvalue.substring(cmdvalue.indexOf('=') + 1, cmdvalue.length());
              if (name == "Garagem") {
                //command
              }
              if (name == "Portao") {
                //command
              }
              if (name == "Alarme") {
                //command
              }
              if (name == "Cobertura") {
                //command
              }
              if (name == "PC" && value.toInt() == 1) {
                  WOL(TargetMac);
              }
            }
            XML_response(client); // send XML file
          }
          if (webFile) { // send web page to client
            while(webFile.available()) {
              client.write(webFile.read());
            }
            webFile.close();
          }
          req_index = 0;
          StrClear(HTTP_req, REQ_BUF_SZ);
          break;
        }
        if (c == '\n') {
          currentLineIsBlank = true;
        }
        else if (c != '\r') {
          currentLineIsBlank = false;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
    client.stop(); // close the connection
  }
}
void StrClear(char *str, char length){
  for (int i = 0; i < length; i++) {
    str[i] = 0;
  }
}
void XML_response(EthernetClient cl) { // send the XML file
  cl.print("<?xml version = \"1.0\"?>");
  cl.print("<response>");
  cl.print("Ok");
  cl.print("</response>");
}
void WOL(byte mac[]) {
  byte preamble[] = {
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF    };
  int i = 0;
  Udp.beginPacket(broadcast, 9);
  Udp.write(preamble, sizeof preamble);
  while (i<16){
    Udp.write(TargetMac, sizeof TargetMac);
    i++;
  }
  Udp.endPacket();
}
char StrContains(char *str, char *sfind){
  char found = 0;
  char index = 0;
  char len;
  len = strlen(str);
  if (strlen(sfind) > len) {
    return 0;
  }
  while (index < len) {
    if (str[index] == sfind[found]) {
      found++;
      if (strlen(sfind) == found) {
        return 1;
      }
    }
    else {
      found = 0;
    }
    index++;
  }
  return 0;
}

And here is what I'm trying to do:

#define WEBDUINO_AUTH_REALM "Automação Residencial"
#include <SPI.h>
#include <Ethernet.h>
#include <WebServer.h>
#include <EthernetUdp.h>
#include <SD.h>
#include <livolo.h>

#define REQ_BUF_SZ   20 // size of buffer used to capture HTTP requests
EthernetUDP Udp;
Livolo livolo(8); // transmitter connected to pin #8

byte mac[] = {0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED};
byte TargetMac[] = {0x60, 0xA4, 0x4C, 0x63, 0x61, 0xD6};  // PC's MAC address
IPAddress ip(192, 168, 1, 5); // IP address, may need to change depending on network
byte broadcast[] = {192, 168, 1, 255};    // Broadcast IP address
EthernetServer server(80); // create a server at port 80
File webFile; // handle to files on SD card
char HTTP_req[REQ_BUF_SZ] = {0}; // buffered HTTP request stored as null terminated string
char req_index = 0; // index into HTTP_req buffer
WebServer webserver("", 80);

void Login(WebServer &server, WebServer::ConnectionType type, char *, bool) {
  if (webserver.checkCredentials("YWRtaW46YWRtaW4=")) {
    webserver.httpSuccess();
    if (type != WebServer::HEAD) {
      P(helloMsg) = "<h1>Hello Admin</h1>";
      webserver.printP(helloMsg);
    }
    StartWeb();
  }
  else {
    webserver.httpUnauthorized();
  }
}
void setup(){
  pinMode(10, OUTPUT); // disable Ethernet chip
  digitalWrite(10, HIGH);
  Serial.begin(9600); // for debugging
  Serial.println("Initializing SD card..."); // initialize SD card
  if (!SD.begin(4)) {
    Serial.println("ERROR - SD card initialization failed!"); // initialization failed
    return;
  }
  Serial.println("SUCCESS - SD card initialized.");
  if (!SD.exists("index.htm")) { // check for index.htm file
    Serial.println("ERROR - Can't find index.htm file!");
    return;  // can't find index file
  }
  Serial.println("SUCCESS - Found index.htm file.");
  Ethernet.begin(mac, ip); // initialize Ethernet device
  server.begin(); // start to listen for clients
  webserver.setDefaultCommand(&Login);
  webserver.begin();
  Udp.begin(9);
}
void loop(){
  char buff[64];
  int len = 64;
  webserver.processConnection(buff, &len);
}
void StartWeb() {
  EthernetClient client = server.available();  // try to get client
  if (client) {  // got client?
    boolean currentLineIsBlank = true;
    while (client.connected()) {
      if (client.available()) { // client data available to read
        char c = client.read(); // read 1 byte (character) from client
        Serial.write(c); // print HTTP request character to serial monitor
        if (req_index < (REQ_BUF_SZ - 1)) {
          HTTP_req[req_index] = c; // save HTTP request character
          req_index++;
        }
        if (c == '\n' && currentLineIsBlank) {
          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println("Connnection: close");
          client.println();
          // if GET request
          if (StrContains(HTTP_req, "GET / ") || StrContains(HTTP_req, "index.htm")) {
            webFile = SD.open("index.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "1Andar.htm")) {
            webFile = SD.open("1Andar.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "2Andar.htm")) {
            webFile = SD.open("2Andar.htm"); // open web page file
          }
          else if (StrContains(HTTP_req, "3Andar.htm")) {
            webFile = SD.open("3Andar.htm"); // open web page file
          }
          // if POST request
          if (StrContains(HTTP_req, "POST /")){
            String POST = "";
            while(client.available()){
              c = client.read();
              POST += c;
            }
            if(StrContains(HTTP_req, "/livolo")) {
              String controlvalue = POST.substring(0, POST.indexOf('&'));
              String buttonvalue = POST.substring(POST.indexOf('&') + 1, POST.length());
              String control = controlvalue.substring(controlvalue.indexOf('=') + 1, controlvalue.length());
              String button = buttonvalue.substring(buttonvalue.indexOf('=') + 1, buttonvalue.length());
              livolo.sendButton(control.toInt(), button.toInt());
            }
            else if (POST != "") {
              String cmdname = POST.substring(0, POST.indexOf('&'));
              String cmdvalue = POST.substring(POST.indexOf('&') + 1, POST.length());
              String name = cmdname.substring(cmdname.indexOf('=') + 1, cmdname.length());
              String value = cmdvalue.substring(cmdvalue.indexOf('=') + 1, cmdvalue.length());
              if (name == "Garagem") {
                //command
              }
              if (name == "Portao") {
                //command
              }
              if (name == "Alarme") {
                //command
              }
              if (name == "Cobertura") {
                //command
              }
              if (name == "PC" && value.toInt() == 1) {
                  WOL(TargetMac);
              }
            }
            XML_response(client); // send XML file
          }
          if (webFile) { // send web page to client
            while(webFile.available()) {
              client.write(webFile.read());
            }
            webFile.close();
          }
          req_index = 0;
          StrClear(HTTP_req, REQ_BUF_SZ);
          break;
        }
        if (c == '\n') {
          currentLineIsBlank = true;
        }
        else if (c != '\r') {
          currentLineIsBlank = false;
        }
      }
    }
    delay(1); // give the web browser time to receive the data
    client.stop(); // close the connection
  }
}
void StrClear(char *str, char length){
  for (int i = 0; i < length; i++) {
    str[i] = 0;
  }
}
void XML_response(EthernetClient cl) { // send the XML file
  cl.print("<?xml version = \"1.0\"?>");
  cl.print("<response>");
  cl.print("Ok");
  cl.print("</response>");
}
void WOL(byte mac[]) {
  byte preamble[] = {
    0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF    };
  int i = 0;
  Udp.beginPacket(broadcast, 9);
  Udp.write(preamble, sizeof preamble);
  while (i<16){
    Udp.write(TargetMac, sizeof TargetMac);
    i++;
  }
  Udp.endPacket();
}
char StrContains(char *str, char *sfind){
  char found = 0;
  char index = 0;
  char len;
  len = strlen(str);
  if (strlen(sfind) > len) {
    return 0;
  }
  while (index < len) {
    if (str[index] == sfind[found]) {
      found++;
      if (strlen(sfind) == found) {
        return 1;
      }
    }
    else {
      found = 0;
    }
    index++;
  }
  return 0;
}

But when I upload this code the Serial Monitor goes crazy printing a bunch of caracters and the web server doesn't even start.


Thanks in advance.

Any suggestions or improvements are welcome.