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caldav-DELETE.php
<?php
dbg_error_log("delete", "DELETE method handler");
require_once('DAVResource.php');
$dav_resource = new DAVResource($request->path);
$container = $dav_resource->GetParentContainer();
$container->NeedPrivilege('DAV::unbind');
$lock_opener = $request->FailIfLocked();
require_once('schedule-functions.php');
function delete_collection( $id ) {
global $session, $request;
$params = array( ':collection_id' => $id );
$qry = new AwlQuery('SELECT child.collection_id AS child_id FROM collection child JOIN collection parent ON (parent.dav_name = child.parent_container) WHERE parent.collection_id = :collection_id', $params );
if ( $qry->Exec('DELETE',__LINE__,__FILE__) && $qry->rows() > 0 ) {
while( $row = $qry->Fetch() ) {
delete_collection($row->child_id);
}
}
if ( $qry->QDo("SELECT write_sync_change(collection_id, 404, caldav_data.dav_name) FROM caldav_data WHERE collection_id = :collection_id", $params )
&& $qry->QDo("DELETE FROM property WHERE dav_name LIKE (SELECT dav_name FROM collection WHERE collection_id = :collection_id) || '%'", $params )
&& $qry->QDo("DELETE FROM locks WHERE dav_name LIKE (SELECT dav_name FROM collection WHERE collection_id = :collection_id) || '%'", $params )
&& $qry->QDo("DELETE FROM caldav_data WHERE collection_id = :collection_id", $params )
&& $qry->QDo("DELETE FROM collection WHERE collection_id = :collection_id", $params ) ) {
@dbg_error_log( "DELETE", "DELETE (collection): User: %d, ETag: %s, Path: %s", $session->user_no, $request->etag_if_match, $request->path);
return true;
}
return false;
}
if ( !$dav_resource->Exists() )$request->DoResponse( 404 );
if ( ! ( $dav_resource->resource_id() > 0 ) ) {
@dbg_error_log( "DELETE", ": failed: User: %d, ETag: %s, Path: %s, ResourceID: %d", $session->user_no, $request->etag_if_match, $request->path, $dav_resource->resource_id());
$request->DoResponse( 403 );
}
$qry = new AwlQuery();
$qry->Begin();
if ( $dav_resource->IsCollection() ) {
$cache = getCacheInstance();
$myLock = $cache->acquireLock('collection-'.$dav_resource->parent_path());
if ( $dav_resource->IsBinding() ) {
$params = array( ':dav_name' => $dav_resource->dav_name() );
if ( $qry->QDo("DELETE FROM dav_binding WHERE dav_name = :dav_name", $params )
&& $qry->Commit() ) {
$cache->delete( 'collection-'.$dav_resource->dav_name(), null );
$cache->delete( 'collection-'.$dav_resource->parent_path(), null );
$cache->releaseLock($myLock);
@dbg_error_log( "DELETE", "DELETE: Binding: %d, ETag: %s, Path: %s", $session->user_no, $request->etag_if_match, $request->path);
$request->DoResponse( 204 );
}
}
else {
if ( delete_collection( $dav_resource->resource_id() ) && $qry->Commit() ) {
// Uncache anything to do with the collection
$cache->delete( 'collection-'.$dav_resource->dav_name(), null );
$cache->delete( 'collection-'.$dav_resource->parent_path(), null );
$cache->releaseLock($myLock);
$request->DoResponse( 204 );
}
}
$cache->releaseLock($myLock);
}
else {
$request->CheckEtagMatch( $dav_resource->Exists(), $dav_resource->unique_tag() );
// Check to see if we need to do any scheduling transactions for this one.
do_scheduling_for_delete($dav_resource);
// We need to serialise access to this process just for this collection
$cache = getCacheInstance();
$myLock = $cache->acquireLock('collection-'.$dav_resource->parent_path());
$collection_id = $dav_resource->GetProperty('collection_id');
if ( function_exists('log_caldav_action') ) {
log_caldav_action( 'DELETE', $dav_resource->GetProperty('uid'), $dav_resource->GetProperty('user_no'), $collection_id, $request->path );
}
$params = array( ':dav_id' => $dav_resource->resource_id() );
if ( $qry->QDo("DELETE FROM property WHERE dav_name = (SELECT dav_name FROM caldav_data WHERE dav_id = :dav_id)", $params )
&& $qry->QDo("DELETE FROM locks WHERE dav_name = (SELECT dav_name FROM caldav_data WHERE dav_id = :dav_id)", $params )
&& $qry->QDo("SELECT write_sync_change(collection_id, 404, caldav_data.dav_name) FROM caldav_data WHERE dav_id = :dav_id", $params )
&& $qry->QDo("DELETE FROM caldav_data WHERE dav_id = :dav_id", $params ) ) {
$qry->Commit();
@dbg_error_log( "DELETE", "DELETE: User: %d, ETag: %s, Path: %s", $session->user_no, $request->etag_if_match, $request->path);
if ( function_exists('post_commit_action') ) {
post_commit_action( 'DELETE', $dav_resource->GetProperty('uid'), $dav_resource->GetProperty('user_no'), $collection_id, $request->path );
}
$cache->delete( 'collection-'.$dav_resource->parent_path(), null );
$cache->releaseLock($myLock);
$request->DoResponse( 204 );
}
$cache->releaseLock($myLock);
}
$request->DoResponse( 500 );
DAVResource
Definition DAVResource.php:25