/**
* serve a resource associated with an object
*
* the function might not return (e.g. when a module calls serve_file()).
* @param string $s object (e.g. page.rev.obj)
* @param bool $dl download file
* @return bool
*/
function serve_resource($s, $dl)
{
load_modules('glue');
// resolve symlinks
$ret = object_get_symlink(array('name' => $s));
if ($ret['#error'] == false && $ret['#data'] !== false) {
log_msg('debug', 'controller: resolved resource ' . quot($s) . ' into ' . quot($ret['#data']));
$s = $ret['#data'];
}
$obj = load_object(array('name' => $s));
if ($obj['#error']) {
return false;
} else {
$obj = $obj['#data'];
}
$ret = invoke_hook_while('serve_resource', false, array('obj' => $obj, 'dl' => $dl));
// this is probably not needed as the module will most likely call
// serve_file() on success, which does not return
foreach ($ret as $key => $val) {
if ($val !== false) {
return true;
}
}
return false;
}
/**
* list all objects referencing a certain file in the shared directory
*
* @param array $args arguments
* key 'pagename' is the pagename (i.e. page)
* key 'file' filename of file in the shared directory
* key 'stop_after' n references
* @return array response
* array of objects (i.e. page.rev.obj)
*/
function upload_references($args)
{
$revs = revisions($args);
if ($revs['#error']) {
return $revs;
} else {
$revs = $revs['#data'];
}
if (empty($args['file'])) {
return response('Required argument "file" missing or empty', 400);
}
// this is an optimization for delete_upload()
if (@is_numeric($args['stop_after'])) {
$stop_after = intval($args['stop_after']);
} else {
$stop_after = 0;
}
$ret = array();
// for each revision
foreach ($revs as $rev) {
// load all objects
$files = @scandir(CONTENT_DIR . '/' . $args['pagename'] . '/' . $rev);
foreach ($files as $f) {
if ($f == '.' || $f == '..') {
continue;
}
$obj = load_object(array('name' => $args['pagename'] . '.' . $rev . '.' . $f));
if ($obj['#error']) {
continue;
} else {
$obj = $obj['#data'];
}
// and handle the object to our modules
log_msg('debug', 'upload_references: checking ' . quot($obj['name']));
$revs = invoke_hook_while('has_reference', false, array('file' => $args['file'], 'obj' => $obj));
if (count($revs)) {
$ret[] = $args['pagename'] . '.' . $rev . '.' . $f;
if (count($ret) == $stop_after) {
// return prematurely
return response($ret);
}
}
}
}
return response($ret);
}
