nicholas@2510: <?php
nicholas@2510: 
nicholas@2510: function generateRandomString($length = 32) {
nicholas@2510:     // from http://stackoverflow.com/questions/4356289/php-random-string-generator
nicholas@2510:     $characters = '0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ';
nicholas@2510:     $charactersLength = strlen($characters);
nicholas@2510:     $randomString = '';
nicholas@2510:     for ($i = 0; $i < $length; $i++) {
nicholas@2510:         $randomString .= $characters[rand(0, $charactersLength - 1)];
nicholas@2510:     }
nicholas@2510:     return $randomString;
nicholas@2510: }
nicholas@2510: 
nicholas@2510: // Request a new session key from the server
nicholas@2510: header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0");
nicholas@2510: header("Cache-Control: post-check=0, pre-check=0", false);
nicholas@2510: header("Pragma: no-cache");
nicholas@2510: 
nicholas@2510: $saves = glob("../saves/*.xml");
nicholas@2510: 
nicholas@2510: $key = "";
nicholas@2510: 
nicholas@2510: while ($key == "") {
nicholas@2510:     $tempKey = generateRandomString(32);
nicholas@2510:     $unique = true;
nicholas@2510:     foreach($saves as $filename)
nicholas@2510:     {
nicholas@2510:         $xml_string = file_get_contents($filename, FILE_TEXT);
nicholas@2510:         $xml_object = simplexml_load_string($xml_string);
nicholas@2510:         if ($xml_object != false) {
nicholas@2510:             if (isset($value['key']))
nicholas@2510:             {
nicholas@2510:                 if ($value['key'] == $key_requested) {
nicholas@2510:                     $unique = false;
nicholas@2510:                 }
nicholas@2510:             }
nicholas@2510:         }
nicholas@2510:     }
nicholas@2510:     if ($unique) {
nicholas@2510:         $key = $tempKey;
nicholas@2510:     }
nicholas@2510: }
nicholas@2510: 
nicholas@2513: $filename = "../saves/save-".$key.".xml";
nicholas@2510: $fileHandle = fopen($filename, 'w');
nicholas@2510: if ($fileHandle == FALSE) {
nicholas@2514:     echo "<response><state>ERROR</state><key>".$key."</key><message>Could not open file for writing</message></response>";
nicholas@2511:     return;
nicholas@2510: }
nicholas@2510: fclose($fileHandle);
nicholas@2510: // TODO:
nicholas@2510: //  Generate the XML Base file and save it
nicholas@2510: $doc_struct = new SimpleXMLElement('<waetresult/>');
nicholas@2510: $doc_struct->addAttribute("key",$key);
nicholas@2510: //  Add start time
nicholas@2510: //  Add IP Address information
nicholas@2510: //  Save the file
nicholas@2510: $doc_struct->asXML($filename);
nicholas@2510: echo "<response><state>OK</state><key>".$key."</key></response>";
nicholas@2510: return;
nicholas@2510: ?>