<?php
/************************************************************************/
/* ajax_media_control.php                                               */
/*----------------------------------------------------------------------*/
/* Ajax handler for COM::MediaControl()                                 */
/*----------------------------------------------------------------------*/
/* Copyright (c) 2008-2009 Avaya Inc.                                   */
/************************************************************************/


// This script is stored out of the way in the ajax folder, but needs to
// act as if it were called from folder above (scripts) so that paths
// used in require_once files remain valid. Hence, chdir to the dir above.
chdir('..');

// Define Forward, Player, AppMode, Cookie, GetLocale, SessionHandler, Themes and AuthHandler, ErrorToHtml.
require_once('inc/common.php');

// Recreate $_SESSION variable
session_start();

// Record client's time for this request
$ajax_timestamp = 0;
if( isset( $_GET['timestamp'] ) )
{
  $l = strlen($_GET['timestamp']);
  if( $l > 3 )
  {
    $time_string = substr($_GET['timestamp'],0,$l-3);
    $ajax_timestamp = (int)$time_string;
  }
}

// Record page access (also writes session id)
GetEventLog()->LogAccess();

// Check that visitor should be here. Authenticate populates $user record.
$user = null;
$mailserver = null;
$reason = GetSessionHandler()->Authenticate( session_id(), $user );
if ( $reason != SessionHandler::AUTH_SUCCESS )
{
  $res = 'auth+++ajax_media_control+++'. $reason;
  GetSessionHandler()->DestroySession();
  GetEventLog()->WriteError( gettext('Authentication failed:') . ' ' . GetSessionHandler()->ErrorText($reason) );
  header('Content-Type: text/plain; charset="utf-8"');
  header('Content-Length: ' . strlen($res));
  echo $res;
  exit;
}
else
{
  // Connect to mail server
  $mailserver = GetMailserver();
  if( !$mailserver )
  {
    $res = 'error+++ajax_media_control+++' . gettext("Can't connect to mailserver.");
    GetEventLog()->WriteError( gettext("Can't connect to mailserver.") );
    header('Content-Type: text/plain; charset="utf-8"');
    header('Content-Length: ' . strlen($res));
    echo $res;
    exit;
  }
}

// Initialise script output
$res = 'error+++ajax_media_control+++' . gettext('Unspecified error.');

// Get parameters from query string
if( !isset( $_POST['command'] ) )
{
  $res = 'error+++ajax_media_control+++Request is missing parameters.';
  GetEventLog()->WriteError( gettext("Request is missing parameters.")
  . " file=\"" . isset($_POST['command']) . "\"" );
}
else
{
  $command = Disinfect( $_POST['command'] );
  $command_id = 0;
  switch( $command )
  {
    case "play":
      $command_id = 1;
      break;
    case "stop":
      $command_id = 2;
      break;
    case "rwnd":
      $command_id = 3;
      break;
    case "ffwd":
      $command_id = 4;
      break;
    case "paus":
      $command_id = 5;
      break;
    default:
      $command_id = 0;
      break;
  }

  if( $command_id > 0 )
  {
    $res = $mailserver->MediaControl( session_id(), $command_id );
  }
  else
  {
    $res = 'error+++ajax_media_control+++' . gettext("Bad command");
  }
}

// Output to the stream the resulting HTML
header('Content-Type: text/plain; charset="utf-8"');
header('Content-Length: ' . strlen($res));
echo $res;

?>