<?php
/**
* CalDAV Server - handle PUT method on unknown (arbitrary) content-types
*
* @package   davical
* @subpackage   caldav
* @author    Andrew McMillan <andrew@morphoss.com>
* @copyright Morphoss Ltd
* @license   http://gnu.org/copyleft/gpl.html GNU GPL v2 or later
*/
dbg_error_log("PUT", "method handler");

require_once('DAVResource.php');

if ( ! ini_get('open_basedir') && (isset($c->dbg['ALL']) || (isset($c->dbg['put']) && $c->dbg['put'])) ) {
  $fh = fopen('/var/log/davical/PUT.debug','w');
  if ( $fh ) {
    fwrite($fh,$request->raw_post);
    fclose($fh);
  }
}

$lock_opener = $request->FailIfLocked();

if ( $add_member ) {
  $request->path = $request->dav_name() . uuid();
  $dest = new DAVResource($request->path);
  if ( $dest->Exists() ) {
    $request->path = $request->dav_name() . uuid();
    $dest = new DAVResource($request->path);
    if ( $dest->Exists() ) throw new Exception("Failed to generate unique segment name for add-member!");
  }
}
else {
  $dest = new DAVResource($request->path);
}

$container = $dest->GetParentContainer();
if ( $container->IsCalendar() ) {
  $request->PreconditionFailed(412,'urn:ietf:params:xml:ns:caldav:supported-calendar-data',
                  translate('Incorrect content type for calendar: ') . $request->content_type );
}
else if ( $container->IsAddressbook() ) {
  $request->PreconditionFailed(412,'urn:ietf:params:xml:ns:carddav:supported-address-data',
                  translate('Incorrect content type for addressbook: ') . $request->content_type );
}
if ( ! $dest->Exists() ) {
  if ( $container->IsPrincipal() ) {
    $request->DoResponse(403,translate('A DAViCal principal collection may only contain collections'));
  }
  if ( ! $container->Exists() ) {
    $request->DoResponse( 409, translate('Destination collection does not exist') );
  }
  $container->NeedPrivilege('DAV::bind');
}
else {
  if ( $dest->IsCollection() ) {
    if ( ! isset($c->readonly_webdav_collections) || $c->readonly_webdav_collections ) {
      $request->DoResponse(403,translate('You may not PUT to a collection URL'));
    }
    $request->DoResponse(403,translate('PUT on a collection is only allowed for text/calendar content against a calendar collection'));
  }
  $dest->NeedPrivilege('DAV::write-content');
}

$request->CheckEtagMatch( $dest->Exists(), $dest->unique_tag() );

$collection_id = $container->GetProperty('collection_id');

$qry = new AwlQuery();
$qry->Begin();

$etag = md5($request->raw_post);
$params = array(
    ':user_no' => $dest->GetProperty('user_no'),
    ':dav_name' => $dest->bound_from(),
    ':etag' => $etag,
    ':dav_data' => $request->raw_post,
    ':session_user' => $session->user_no
);
if ( $dest->Exists() ) {
  $sql = 'UPDATE caldav_data SET caldav_data=:dav_data, dav_etag=:etag, logged_user=:session_user,
          modified=current_timestamp WHERE user_no=:user_no AND dav_name=:dav_name';
  $response_code = 200;
}
else {
  $sql = 'INSERT INTO caldav_data ( user_no, dav_name, dav_etag, caldav_data, logged_user, created, modified, collection_id )
          VALUES( :user_no, :dav_name, :etag, :dav_data, :session_user, current_timestamp, current_timestamp, :collection_id )';
  $params[':collection_id'] = $collection_id;
  $response_code = 201;
}
$qry->QDo( $sql, $params );

$qry->QDo("SELECT write_sync_change( $collection_id, $response_code, :dav_name)", array(':dav_name' => $dest->bound_from() ) );

$qry = new AwlQuery('COMMIT');
if ( !$qry->Exec('move') ) rollback(500);

// Uncache anything to do with the collection
$cache = getCacheInstance();
$cache->delete( 'collection-'.$container->dav_name(), null );

header('ETag: "'. $etag . '"' );
if ( $response_code == 200 ) $response_code = 204;
$request->DoResponse( $response_code );
