<?php
/**
* CalDAV Server - main program
*
* @package   davical
* @subpackage   caldav
* @author    Andrew McMillan <andrew@catalyst.net.nz>
* @copyright Catalyst .Net Ltd
* @license   http://gnu.org/copyleft/gpl.html GNU GPL v2
*/
require_once("../inc/always.php");
dbg_error_log( "caldav", " User agent: %s", ((isset($_SERVER['HTTP_USER_AGENT']) ? $_SERVER['HTTP_USER_AGENT'] : "Unfortunately Mulberry does not send a 'User-agent' header with its requests :-(")) );
dbg_log_array( "headers", '_SERVER', $_SERVER, true );
require_once("HTTPAuthSession.php");
$session = new HTTPAuthSession();

/**
* access-control is rfc3744, we do some of it, but no way to say that.
* calendar-schedule is another one we do some of, but the spec is not final yet either.
*/
if ( isset($c->override_dav_header) ) {
  $dav = $c->override_dav_header;
}
else {
  $dav = "1, 2, 3, access-control, calendar-access, calendar-schedule";
}
header( "DAV: $dav");

require_once("CalDAVRequest.php");
$request = new CalDAVRequest();

if ( ! ($request->IsPrincipal() || isset($request->collection) || $request->method == 'PUT' || $request->method == 'MKCALENDAR' || $request->method == 'MKCOL' ) ) {
  if ( preg_match( '#^/principals/users(/.*/)$#', $request->path, $matches ) ) {
    // Although this doesn't work with the iPhone, perhaps it will with iCal...
    /** @TODO: integrate handling this URL into CalDAVRequest.php */
    $redirect_url = ConstructURL('/caldav.php'.$matches[1]);
    dbg_error_log( "LOG WARNING", "Redirecting %s for '%s' to '%s'", $request->method, $request->path, $redirect_url );
    header("Location: $redirect_url" );
    exit(0);
  }
  dbg_error_log( "LOG WARNING", "Attempt to %s url '%s' but no collection exists there.", $request->method, $request->path );
  if ( $request->method == 'GET' || $request->method == 'REPORT' ) {
    $request->DoResponse( 404, translate("There is no collection at that URL.") );
  }
}

switch ( $request->method ) {
  case 'OPTIONS':    include_once("caldav-OPTIONS.php");    break;
  case 'REPORT':     include_once("caldav-REPORT.php");     break;
  case 'PROPFIND':   include_once("caldav-PROPFIND.php");   break;
  case 'PROPPATCH':  include_once("caldav-PROPPATCH.php");  break;
  case 'MKCALENDAR': include_once("caldav-MKCALENDAR.php"); break;
  case 'MKCOL':      include_once("caldav-MKCALENDAR.php"); break;
  case 'PUT':        include_once("caldav-PUT.php");        break;
  case 'POST':       include_once("caldav-POST.php");       break;
  case 'GET':        include_once("caldav-GET.php");        break;
  case 'HEAD':       include_once("caldav-GET.php");        break;
  case 'DELETE':     include_once("caldav-DELETE.php");     break;
  case 'LOCK':       include_once("caldav-LOCK.php");       break;
  case 'UNLOCK':     include_once("caldav-LOCK.php");       break;

  case 'TESTRRULE':  include_once("test-RRULE.php");        break;

  default:
    dbg_error_log( "caldav", "Unhandled request method >>%s<<", $request->method );
    dbg_log_array( "caldav", '_SERVER', $_SERVER, true );
    dbg_error_log( "caldav", "RAW: %s", str_replace("\n", "",str_replace("\r", "", $request->raw_post)) );
}

$request->DoResponse( 500, translate("The application program does not understand that request.") );