Talk:OpenDuino

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(Server part II (MW extension))
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temporary storage for source code
 
  
== arduino part ==
 
 
<pre>
 
#include <Ethernet.h>
 
 
byte mac[] = { 0xDE, 0xAD, 0xBE, 0xEF, 0xFE, 0xED };
 
byte ip[] = { 192, 168, 1, 33 };
 
byte gateway[] = { 192 ,168 ,1 ,254 };
 
byte subnet[] = { 255, 255, 255, 0 };
 
boolean open = false;
 
 
//byte server_ip[] = {74, 125, 127, 100}; //google
 
byte server_ip[] = { 80, 90, 47, 170 }; //hackerspace.lu
 
//byte server_ip[] = { 192, 168, 1, 65 };
 
 
char request[300] = "GET /OpenDuino.php?status=0 HTTP/1.0";
 
//char request[300] = "GET /index.html HTTP/1.0";
 
 
unsigned long time = 0;
 
unsigned long oldtime = 0;
 
 
unsigned long trigger_oldtime = 0;
 
 
//Server server(1337);
 
 
void setup()
 
{
 
  oldtime = millis();
 
  trigger_oldtime = oldtime;
 
  Ethernet.begin(mac, ip, gateway, subnet);
 
  //server.begin();
 
  Serial.begin(9600);
 
 
  lights();
 
  // connect once on launch
 
  dialup();
 
}
 
 
void dialup()
 
{
 
  Client client(server_ip,80); 
 
  Serial.println("Connecting...");
 
  Serial.println(request);
 
  if( client.connect() ){
 
    client.println(request);
 
    client.println();
 
  } else {
 
    Serial.println("Connection failed.");
 
  } //*/
 
   
 
  if(client.available()) {
 
    char c = client.read();
 
    Serial.println(c);
 
  } //*/
 
  client.stop();
 
}
 
 
void lights() {
 
  if( open ) {
 
    digitalWrite(7,HIGH);
 
    digitalWrite(5,LOW);
 
  } else {
 
    digitalWrite(7,LOW);
 
    digitalWrite(5,HIGH);
 
  }
 
}
 
 
 
 
void loop()
 
{
 
  time = millis();
 
 
 
  // read the switch state
 
  if(digitalRead(0) == 0) {
 
    if( time - trigger_oldtime > 1000 || time - trigger_oldtime < 0 ) {
 
      trigger_oldtime = time;
 
      Serial.println("Changing state.");
 
      open = !open;
 
      request[26] = (int)open+48;
 
      lights();
 
      dialup();
 
    }
 
  }
 
 
 
 
  // send regular updates
 
  if( time-oldtime > 300000 || time - oldtime < 0 ) {
 
      oldtime = time;
 
      dialup();
 
  }
 
}
 
</pre>
 
 
== Server part I ==
 
 
<pre>
 
<?php
 
 
try{
 
        checkHostname();
 
        setStatus();
 
        respond();
 
} catch (Exception $e) {
 
        mail('','OpenDuino failure',$e->getMessage());
 
        writeToLog("Encountered an exception on ".date("r").": ".$e->getMessage());
 
}
 
 
 
/* functions */
 
function checkHostname(){
 
        $hostname = 'openduino.dyndns.org';
 
        $ip = $_SERVER['REMOTE_ADDR'];
 
        if($ip != gethostbyname($hostname))
 
                throw new Exception("Sorry dude, wrong ip!");
 
}
 
 
function setStatus(){
 
        $status = $_GET['status'];
 
        if($status != "0" && $status != "1")
 
                throw new Exception('No valid status given!');
 
        $file = '/var/www/hackerspace.lu/open/status';
 
        if(file_exists($file) && is_writeable($file)){
 
                $current = file_get_contents($file);
 
                if($status != $current){        // only write on change
 
                        file_put_contents($file,$status);
 
                        writeToLog("Wrote $status to statusfile on ".date("r"));
 
                }
 
        } else throw new Exception("Status file not writeable!");
 
}
 
 
function respond(){
 
        print('ok');
 
}
 
 
 
function writeToLog($text){
 
        $logfile = '/var/www/hackerspace.lu/open/log';
 
        if(file_exists($logfile) && is_writeable($logfile))
 
                file_put_contents($logfile,$text."\n",FILE_APPEND);
 
        else throw new Exception("Logfile not writeable!");
 
}
 
 
?>
 
</pre>
 
 
== Server part II (Media Wiki extension) ==
 
 
<pre>
 
<?php
 
 
/**
 
* Todo: Refactor
 
*/
 
 
$wgExtensionFunctions[] = "OpenDuino";
 
 
// Extension credits that show up on Special:Version
 
$wgExtensionCredits['parserhook'][] = array(
 
        'name' => 'OpenDuino',
 
        'author' => '[http://david.raison.lu David Raison]' ,
 
        'url' => 'http://www.hackerspace.lu/wiki/OpenDuino',
 
        'description' => 'OpenDuino is a hard- and software solution to notify site visitors of the hackerspace occupation status'
 
);
 
 
/* global vars */
 
$projectLink = '<a href="OpenDuino">*</a>';
 
 
function OpenDuino(){
 
    global $wgParser;
 
    $wgParser->setHook('openduino', 'ShowOpenDuinoStatus');
 
}
 
 
function ShowOpenDuinoStatus(){
 
global $wgOpenDuinoFile;
 
$status = readStatusFile($wgOpenDuinoFile);
 
if($status == 1)
 
return displayLightOn();
 
elseif($status == 0)
 
return displayLightOff();
 
else
 
return displayError();
 
return true;
 
}
 
 
function readStatusFile($file){
 
if(file_exists($file) && is_readable($file))
 
return file_get_contents($file);
 
}
 
 
function displayLightOn(){
 
global $wgParser, $projectLink;
 
$output = '<div style="width:90%;height:40px;border:1px dashed navy;padding: 20px 5px 0px 40px;'
 
.'background:#ffffff url(/w/thumb.php?f=LightOn.svg&width=32) left no-repeat;">'
 
.'The hackerspace is currently open. Come on in!'
 
.'&nbsp;'.$projectLink
 
.'</div>';
 
return $output;
 
}
 
 
function displayLightOff(){
 
global $wgParser, $projectLink;
 
//$link = "[[OpenDuino|*]]";
 
//$projectLink = $wgParser->parse($link,new Title(), new ParserOptions(),true,true)->getText();
 
$output = '<div style="width:90%;height:40px;border:1px dashed navy;padding: 20px 5px 0px 40px;'
 
.'background:#ffffff url(/w/thumb.php?f=LightOff.svg&width=32) left no-repeat;">'
 
.'The hackerspace is currently unoccupied. Check back later!'
 
.'&nbsp;'.$projectLink
 
.'</div>';
 
return $output;
 
}
 
 
function displayError(){
 
global $wgParser, $projectLink;
 
$output = '<div style="width:90%;height:50px;border:1px dashed navy;padding: 20px 5px 0px 40px;'
 
.'background:#ffffff url(/w/thumb.php?f=Attention.png&width=32) left no-repeat;">'
 
.'There was an error reading the Hackerspace status.<br/>You should probably contact an office member.'
 
.'&nbsp;'.$projectLink
 
.'</div>';
 
return $output;
 
}
 
</pre>
 

Latest revision as of 19:20, 23 May 2011

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