/**
* this is the default (fallback) controller
*
* it mainly invokes other controllers or sends error messages
*/
function controller_default($args)
{
if (empty($args[0][0]) && empty($args[0][1])) {
// take the default page
$args[0][0] = startpage();
log_msg('debug', 'controller_default: using the default page');
} elseif ($args[0][0] == 'edit' && empty($args[0][1])) {
// quirk: edit the default page
$args[0][0] = startpage();
$args[0][1] = 'edit';
log_msg('debug', 'controller_default: using the default page');
invoke_controller($args);
return;
}
page_canonical($args[0][0]);
$obj = expl('.', $args[0][0]);
if (count($obj) == 2) {
// page requested
if (page_exists($args[0][0])) {
if (DEFAULT_TO_EDIT && is_auth()) {
log_msg('debug', 'controller_default: invoking controller_edit');
controller_edit($args);
} else {
log_msg('debug', 'controller_default: invoking controller_show');
controller_show($args);
}
} elseif (ALWAYS_PROMPT_CREATE_PAGE || is_auth() || $args[0][0] == startpage()) {
log_msg('debug', 'controller_default: invoking controller_create_page');
controller_create_page($args);
} else {
log_msg('info', 'controller_default: page ' . quot($args[0][0]) . ' not found, serving 404');
hotglue_error(404);
}
} else {
// possibly object requested
if (object_exists($args[0][0])) {
// try to serve upload
if (isset($args['download']) && $args['download']) {
// prompt file save dialog on client
$dl = true;
} else {
$dl = false;
}
log_msg('debug', 'controller_default: invoking serve_resource');
if (!serve_resource($args[0][0], $dl)) {
log_msg('info', 'controller_default: object ' . quot($args[0][0]) . ' has no associated resource, serving 404');
hotglue_error(404);
}
} else {
log_msg('info', 'controller_default: object ' . quot($args[0][0]) . ' not found, serving 404');
hotglue_error(404);
}
}
}
/**
* save the state of a html element corresponding to an object to disk
*
* this function takes the object lock.
* @param array $args arguments
* key 'html' one html element
* @return array response
* true if successful
*/
function save_state($args)
{
if (empty($args['html'])) {
return response('Required argument "html" missing or empty', 400);
}
require_once 'html.inc.php';
require_once 'html_parse.inc.php';
$elem = html_parse_elem($args['html']);
if (!elem_has_class($elem, 'object')) {
return response('Error saving state as class "object" is not set', 400);
} elseif (!object_exists(elem_attr($elem, 'id'))) {
return response('Error saving state as object does not exist', 404);
}
// LOCK
$L = _obj_lock(elem_attr($elem, 'id'), LOCK_TIME);
if ($L === false) {
return response('Could not acquire lock to ' . quot($args['name']) . ' in ' . LOCK_TIME . 'ms', 500);
}
$obj = load_object(array('name' => elem_attr($elem, 'id')));
if ($obj['#error']) {
// UNLOCK
_obj_unlock($L);
return response('Error saving state, cannot load ' . quot(elem_attr($elem, 'id')), 500);
} else {
$obj = $obj['#data'];
}
$ret = invoke_hook_while('save_state', false, array('elem' => $elem, 'obj' => $obj));
// UNLOCK
_obj_unlock($L);
if (count($ret) == 0) {
return response('Error saving state as nobody claimed element', 500);
} else {
$temp = array_keys($ret);
log_msg('info', 'save_state: ' . quot($obj['name']) . ' was handled by ' . quot($temp[0]));
return response(true);
}
}
