/*
 * 
 * Initial hack of an Arduino VNC server
 * 
 * LGPL 2.0
 *
 * follower@rancidbacon.com
 * 
 */

#include <Ethernet.h>

// network configuration.  gateway and subnet are optional.
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
byte ip[] = { 169, 254, 254, 169 }; 

// vnc defaults to port 5900
Server server(5900);

void setup()
{
  // initialize the ethernet device
  Ethernet.begin(mac, ip);
  
  // start listening for clients
  server.begin();
}

void loop()
{
  Client client = server.connected(); // Note: Needs my Ethernet library edit
  if (client) {
    client.print("RFB 003.003\n");
    
    // Hacky check for client response
    // requesting the protocol version we expect.
    // TODO: In all cases change to handle client disconnect etc
    while (1) {
      char c = client.read();
      if (c == '\n') {
        break;
      }
    }
   
    // Specify security type = None
    // For 3.3 protocol client is expected to just accept this
    // and not acknowledge it.
    client.write(0);
    client.write(0);
    client.write(0);
    client.write(1);
    
    // Begin Initialisation phase
    while (!client.available()) {
      // Wait for ClientInit message from client
    }
    
    // Throw away shared-flag value in ClientInit message
    client.read(); 
    
    // Send ServerInit message
    byte serverInitMsg[] = {
                       0,0xff, // framebuffer-width
                       0,0xff, // framebuffer-height
                       
                       // server-pixel-format
                       0x08, // bits-per-pixel
                       0x08, // depth
                       0x01, // big-endian-ßag (ignored for 8-bit)
                       0x01, // true-colour-ßag
                       0x00, 0x07,// red-max (2 bit)
                       0x00, 0x07,// green-max (2 bit)
                       0x00, 0x03,// blue-max (2 bit)
                       0x00, // red-shift -- assume bbgggrrr (bgr233)
                       0x03, // green-shift
                       0x06, // blue-shift 
                       0x00, 0x00, 0x00, // padding
                       
                       0x00, 0x00, 0x00, 0x07, // name-length
                       'A','r','d','u','i','n','o' // name-string
                       };
                       
    for (int i = 0; i < sizeof(serverInitMsg); i++) {
      client.write(serverInitMsg[i]);
    }

    while (client.connected()) {
      
    }
    client.stop();
  }
}