Files
moodle/lib/classes/router/schema/parameters/header_object.php
2024-08-06 16:01:07 +08:00

107 lines
3.8 KiB
PHP

<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
namespace core\router\schema\parameters;
use core\exception\invalid_parameter_exception;
use core\param;
use core\router\schema\parameter;
use Psr\Http\Message\ServerRequestInterface;
/**
* A Header Object.
*
* https://spec.openapis.org/oas/v3.1.0#headerObject
*
* The Header Object follows the structure of the Parameter Object with the following changes:
*
* - name MUST NOT be specified, it is given in the corresponding headers map.
* - in MUST NOT be specified, it is implicitly in header.
* - All traits that are affected by the location MUST be applicable to a location of header (for example, style).
*
* @package core
* @copyright 2023 Andrew Lyons <andrew@nicols.co.uk>
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
class header_object extends parameter {
/**
* Create a new header object.
*
* @param bool $multiple Whether this parameter can be specified multiple times.
* @param mixed ...$extra Header arguments to pass to the parameter constructor.
*/
public function __construct(
/** @var bool Whether multiple instances of this header are supported */
protected bool $multiple = false,
...$extra,
) {
$extra['in'] = parameter::IN_HEADER;
parent::__construct(...$extra);
}
/**
* Validate the parameter.
*
* @param ServerRequestInterface $request The request to validate.
* @return ServerRequestInterface The request with the validated parameter.
* @throws invalid_parameter_exception If the parameter is invalid.
*/
public function validate(
ServerRequestInterface $request,
): ServerRequestInterface {
if ($request->hasHeader($this->name)) {
$headervalues = $request->getHeader($this->name);
if (!$this->multiple && count($headervalues) > 1) {
throw new invalid_parameter_exception(
"The parameter {$this->name} was specified multiple times, but it can only be specified once",
);
}
// This parameter was specified. Validate it.
if ($this->get_type() === param::BOOL) {
$headervalues = array_map(fn ($headervalue) => match ($headervalue) {
'true' => 1,
'false' => 0,
default => throw new \ValueError('Invalid boolean value.'),
}, $headervalues);
return $request->withHeader($this->name, $headervalues);
}
foreach ($headervalues as $headervalue) {
$this->type->validate_param($headervalue);
}
return $request;
}
if ($this->required) {
throw new invalid_parameter_exception(
"A required parameter {$this->name} was not provided and must be specified",
);
}
if ($this->default !== null) {
// This parameter is optional. Fill the default.
return $request->withHeader($this->name, $this->default);
}
// This parameter is optional and there is no default.
// Fill a null value.
return $request->withHeader($this->name, null);
}
}