408 lines
11 KiB
PHP
408 lines
11 KiB
PHP
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<?php
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declare(strict_types=1);
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namespace Grav\Plugin\Admin\Controllers;
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use Grav\Common\Debugger;
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use Grav\Common\Grav;
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use Grav\Common\Inflector;
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use Grav\Common\Language\Language;
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use Grav\Common\Utils;
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use Grav\Framework\Flex\Interfaces\FlexObjectInterface;
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use Grav\Framework\Form\Interfaces\FormInterface;
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use Grav\Framework\Psr7\Response;
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use Grav\Framework\RequestHandler\Exception\NotFoundException;
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use Grav\Framework\RequestHandler\Exception\PageExpiredException;
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use Grav\Framework\RequestHandler\Exception\RequestException;
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use Grav\Framework\Route\Route;
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use Grav\Framework\Session\SessionInterface;
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use Psr\Http\Message\ResponseInterface;
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use Psr\Http\Message\ServerRequestInterface;
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use Psr\Http\Server\RequestHandlerInterface;
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use RocketTheme\Toolbox\Event\Event;
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use RocketTheme\Toolbox\Session\Message;
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abstract class AbstractController implements RequestHandlerInterface
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{
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/** @var string */
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protected $nonce_action = 'admin-form';
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/** @var string */
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protected $nonce_name = 'admin-nonce';
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/** @var ServerRequestInterface */
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protected $request;
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/** @var Grav */
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protected $grav;
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/** @var string */
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protected $type;
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/** @var string */
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protected $key;
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/**
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* Handle request.
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*
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* Fires event: admin.[directory].[task|action].[command]
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*
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* @param ServerRequestInterface $request
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* @return Response
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*/
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public function handle(ServerRequestInterface $request): ResponseInterface
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{
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$attributes = $request->getAttributes();
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$this->request = $request;
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$this->grav = $attributes['grav'] ?? Grav::instance();
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$this->type = $attributes['type'] ?? null;
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$this->key = $attributes['key'] ?? null;
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/** @var Route $route */
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$route = $attributes['route'];
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$post = $this->getPost();
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if ($this->isFormSubmit()) {
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$form = $this->getForm();
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$this->nonce_name = $attributes['nonce_name'] ?? $form->getNonceName();
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$this->nonce_action = $attributes['nonce_action'] ?? $form->getNonceAction();
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}
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try {
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$task = $request->getAttribute('task') ?? $post['task'] ?? $route->getParam('task');
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if ($task) {
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if (empty($attributes['forwarded'])) {
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$this->checkNonce($task);
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}
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$type = 'task';
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$command = $task;
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} else {
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$type = 'action';
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$command = $request->getAttribute('action') ?? $post['action'] ?? $route->getParam('action') ?? 'display';
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}
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$command = strtolower($command);
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$event = new Event(
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[
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'controller' => $this,
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'response' => null
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]
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);
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$this->grav->fireEvent("admin.{$this->type}.{$type}.{$command}", $event);
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$response = $event['response'];
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if (!$response) {
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/** @var Inflector $inflector */
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$inflector = $this->grav['inflector'];
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$method = $type . $inflector::camelize($command);
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if ($method && method_exists($this, $method)) {
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$response = $this->{$method}($request);
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} else {
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throw new NotFoundException($request);
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}
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}
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} catch (\Exception $e) {
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/** @var Debugger $debugger */
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$debugger = $this->grav['debugger'];
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$debugger->addException($e);
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$response = $this->createErrorResponse($e);
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}
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if ($response instanceof Response) {
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return $response;
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}
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return $this->createJsonResponse($response);
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}
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/**
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* Get request.
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*
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* @return ServerRequestInterface
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*/
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public function getRequest(): ServerRequestInterface
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{
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return $this->request;
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}
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/**
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* @param string|null $name
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* @param mixed $default
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* @return mixed
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*/
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public function getPost(string $name = null, $default = null)
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{
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$body = $this->request->getParsedBody();
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if ($name) {
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return $body[$name] ?? $default;
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}
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return $body;
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}
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/**
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* Check if a form has been submitted.
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*
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* @return bool
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*/
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public function isFormSubmit(): bool
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{
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return (bool)$this->getPost('__form-name__');
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}
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/**
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* Get form.
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*
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* @param string|null $type
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* @return FormInterface
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*/
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public function getForm(string $type = null): FormInterface
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{
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$object = $this->getObject();
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if (!$object) {
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throw new \RuntimeException('Not Found', 404);
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}
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$formName = $this->getPost('__form-name__');
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$uniqueId = $this->getPost('__unique_form_id__') ?: $formName;
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$form = $object->getForm($type ?? 'edit');
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if ($uniqueId) {
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$form->setUniqueId($uniqueId);
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}
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return $form;
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}
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/**
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* @return FlexObjectInterface
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*/
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abstract public function getObject();
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/**
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* Get Grav instance.
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*
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* @return Grav
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*/
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public function getGrav(): Grav
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{
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return $this->grav;
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}
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/**
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* Get session.
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*
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* @return SessionInterface
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*/
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public function getSession(): SessionInterface
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{
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return $this->getGrav()['session'];
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}
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/**
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* Display the current admin page.
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*
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* @return Response
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*/
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public function createDisplayResponse(): ResponseInterface
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{
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return new Response(418);
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}
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/**
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* Create custom HTML response.
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*
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* @param string $content
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* @param int $code
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* @return Response
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*/
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public function createHtmlResponse(string $content, int $code = null): ResponseInterface
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{
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return new Response($code ?: 200, [], $content);
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}
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/**
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* Create JSON response.
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*
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* @param array $content
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* @return Response
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*/
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public function createJsonResponse(array $content): ResponseInterface
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{
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$code = $content['code'] ?? 200;
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if ($code >= 301 && $code <= 307) {
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$code = 200;
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}
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return new Response($code, ['Content-Type' => 'application/json'], json_encode($content));
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}
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/**
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* Create redirect response.
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*
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* @param string $url
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* @param int $code
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* @return Response
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*/
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public function createRedirectResponse(string $url, int $code = null): ResponseInterface
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{
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if (null === $code || $code < 301 || $code > 307) {
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$code = $this->grav['config']->get('system.pages.redirect_default_code', 302);
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}
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$accept = $this->getAccept(['application/json', 'text/html']);
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if ($accept === 'application/json') {
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return $this->createJsonResponse(['code' => $code, 'status' => 'redirect', 'redirect' => $url]);
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}
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return new Response($code, ['Location' => $url]);
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}
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/**
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* Create error response.
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*
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* @param \Exception $exception
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* @return Response
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*/
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public function createErrorResponse(\Exception $exception): ResponseInterface
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{
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$validCodes = [
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400, 401, 402, 403, 404, 405, 406, 407, 408, 409, 410, 411, 412, 413, 414, 415, 416, 417, 418,
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422, 423, 424, 425, 426, 428, 429, 431, 451, 500, 501, 502, 503, 504, 505, 506, 507, 508, 511
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];
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if ($exception instanceof RequestException) {
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$code = $exception->getHttpCode();
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$reason = $exception->getHttpReason();
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} else {
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$code = $exception->getCode();
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$reason = null;
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}
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if (!in_array($code, $validCodes, true)) {
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$code = 500;
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}
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$message = $exception->getMessage();
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$response = [
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'code' => $code,
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'status' => 'error',
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'message' => $message
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];
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$accept = $this->getAccept(['application/json', 'text/html']);
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if ($accept === 'text/html') {
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$method = $this->getRequest()->getMethod();
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// On POST etc, redirect back to the previous page.
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if ($method !== 'GET' && $method !== 'HEAD') {
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$this->setMessage($message, 'error');
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$referer = $this->request->getHeaderLine('Referer');
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return $this->createRedirectResponse($referer, 303);
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}
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// TODO: improve error page
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return $this->createHtmlResponse($response['message']);
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}
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return new Response($code, ['Content-Type' => 'application/json'], json_encode($response), '1.1', $reason);
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}
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/**
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* Translate a string.
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*
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* @param string $string
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* @return string
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*/
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public function translate(string $string): string
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{
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/** @var Language $language */
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$language = $this->grav['language'];
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return $language->translate($string);
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}
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/**
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* Set message to be shown in the admin.
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*
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* @param string $message
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* @param string $type
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* @return $this
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*/
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public function setMessage($message, $type = 'info')
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{
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/** @var Message $messages */
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$messages = $this->grav['messages'];
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$messages->add($message, $type);
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return $this;
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}
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/**
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* Check if request nonce is valid.
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*
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* @param string $task
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* @throws PageExpiredException If nonce is not valid.
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*/
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protected function checkNonce(string $task): void
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{
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$nonce = null;
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if (\in_array(strtoupper($this->request->getMethod()), ['POST', 'PUT', 'PATCH', 'DELETE'])) {
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$nonce = $this->getPost($this->nonce_name);
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}
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if (!$nonce) {
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$nonce = $this->grav['uri']->param($this->nonce_name);
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}
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if (!$nonce) {
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$nonce = $this->grav['uri']->query($this->nonce_name);
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}
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if (!$nonce || !Utils::verifyNonce($nonce, $this->nonce_action)) {
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throw new PageExpiredException($this->request);
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}
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}
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/**
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* Return the best matching mime type for the request.
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*
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* @param string[] $compare
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* @return string|null
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*/
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protected function getAccept(array $compare): ?string
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{
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$accepted = [];
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foreach ($this->request->getHeader('Accept') as $accept) {
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foreach (explode(',', $accept) as $item) {
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if (!$item) {
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continue;
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}
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$split = explode(';q=', $item);
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$mime = array_shift($split);
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$priority = array_shift($split) ?? 1.0;
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$accepted[$mime] = $priority;
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}
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}
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arsort($accepted);
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// TODO: add support for image/* etc
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$list = array_intersect($compare, array_keys($accepted));
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if (!$list && (isset($accepted['*/*']) || isset($accepted['*']))) {
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return reset($compare) ?: null;
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}
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return reset($list) ?: null;
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}
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}
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