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<?php |
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/** |
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* @package API |
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* @author Iurii Makukh <[email protected]> |
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* @copyright Copyright (c) 2018, Iurii Makukh |
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* @license https://www.gnu.org/licenses/gpl.html GNU/GPLv3 |
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*/ |
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namespace gplcart\modules\api\controllers; |
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use Exception; |
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use gplcart\core\controllers\frontend\Controller; |
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use gplcart\modules\api\models\Api as ApiModel; |
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use gplcart\modules\api\models\User; |
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use RuntimeException; |
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use UnexpectedValueException; |
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/** |
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* Handles incoming requests and outputs data related to API requests |
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*/ |
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class Api extends Controller |
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{ |
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/** |
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* Api model class instance |
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* @var \gplcart\modules\api\models\Api $api |
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*/ |
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protected $api; |
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/** |
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* User model class instance |
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* @var \gplcart\modules\api\models\User $apiuser |
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*/ |
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protected $apiuser; |
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/** |
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* The current API user |
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* @var array |
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*/ |
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protected $data_user = array(); |
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/** |
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* An array of arguments from URL |
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* @var array |
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*/ |
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protected $data_params = array(); |
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/** |
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* An array of API data to output |
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* @var array |
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*/ |
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protected $data_response; |
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/** |
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* @param User $user |
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* @param ApiModel $api |
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*/ |
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public function __construct(User $user, ApiModel $api) |
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{ |
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parent::__construct(); |
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$this->api = $api; |
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$this->apiuser = $user; |
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} |
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/** |
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* Page callback |
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* @param string $arguments |
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*/ |
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public function callbackApi($arguments = null) |
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{ |
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try { |
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$this->controlAccessApi(); |
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$this->setUserApi(); |
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$this->outputTokenApi(); |
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$this->setParamsApi($arguments); |
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$this->setResponseApi(); |
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} catch (Exception $ex) { |
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$code = $ex->getCode() ?: 403; |
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$this->response->outputStatus($code); |
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} |
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$this->response->outputStatus(501); |
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} |
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/** |
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* Controls access to API |
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* @throws RuntimeException |
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*/ |
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protected function controlAccessApi() |
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{ |
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if (!$this->api->getStatus()) { |
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throw new RuntimeException('API is disabled', 403); |
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} |
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} |
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/** |
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* Sets the user data |
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*/ |
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protected function setUserApi() |
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{ |
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$this->data_user = array(); |
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$client_id = $this->getPosted('client_id'); |
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$client_secret = $this->getPosted('client_secret'); |
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if (isset($client_id) && isset($client_secret)) { |
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$condition = array( |
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'secret' => $client_secret, |
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'api_user_id' => $client_id |
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); |
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$this->data_user = $this->apiuser->get($condition); |
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if (empty($this->data_user['status'])) { |
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throw new RuntimeException('API user is disabled or not found', 403); |
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} |
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if (empty($this->data_user['user_status'])) { |
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throw new RuntimeException('System user is disabled or not found', 403); |
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} |
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if (!empty($this->data_user['data']['ip']) && !in_array($this->getIp(), $this->data_user['data']['ip'])) { |
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throw new RuntimeException('IP is not allowed for this API user', 403); |
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} |
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} |
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} |
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/** |
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* Output JWT token |
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*/ |
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protected function outputTokenApi() |
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{ |
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if (isset($this->data_user['api_user_id'])) { |
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$token = $this->api->getToken($this->data_user['api_user_id']); |
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$this->outputJson($token); |
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} |
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} |
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/** |
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* Output API response |
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*/ |
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protected function setResponseApi() |
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{ |
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$this->data_response = null; |
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$token = $this->getTokenFromHeaderApi(); |
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if (isset($token)) { |
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try { |
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$this->data_user = $this->api->getUserFromToken($token); |
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} catch (Exception $ex) { |
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throw new RuntimeException($ex->getMessage(), 401); |
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} |
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$this->hook->attach('module.api.process', $this->data_params, $this->data_user, $this->data_response, $this); |
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if (!isset($this->data_response)) { |
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throw new RuntimeException('Not content to output', 204); |
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} |
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$this->hook->attach('module.api.output', $this->data_params, $this->data_user, $this->data_response, $this); |
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$this->outputJson($this->data_response); |
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} |
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} |
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/** |
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* Returns a JWT token from the request header |
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* @return null|string |
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* @throws UnexpectedValueException |
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*/ |
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protected function getTokenFromHeaderApi() |
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{ |
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$header = $this->server->header('Authorization'); |
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if (!isset($header)) { |
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return null; |
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} |
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$parts = explode(' ', $header); |
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if (count($parts) != 2) { |
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throw new UnexpectedValueException('Invalid authorization header value', 400); |
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} |
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if (empty($parts[1])) { |
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throw new UnexpectedValueException('Empty authorization token', 400); |
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} |
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return $parts[1]; |
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} |
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/** |
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* Sets an array of parameters to be used as arguments in processors |
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* @param string $path |
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* @throws UnexpectedValueException |
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*/ |
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protected function setParamsApi($path) |
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{ |
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$this->data_params = array( |
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'version' => null, |
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'arguments' => array_filter(explode('/', trim($path, '/')))); |
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if (empty($this->data_params['arguments'])) { |
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throw new UnexpectedValueException('Invalid number of arguments passed', 400); |
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} |
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$this->data_params['get'] = $this->getQuery(null, array(), 'array'); |
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$this->data_params['post'] = $this->getPosted(null, array(), true, 'array'); |
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if (isset($this->data_params['get']['version'])) { |
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$this->data_params['version'] = $this->data_params['get']['version']; |
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unset($this->data_params['get']['version']); |
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if (version_compare($this->data_params['version'], '0.0.1', '>=') < 0) { |
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throw new UnexpectedValueException('Version has invalid value', 400); |
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} |
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} |
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$this->hook->attach('module.api.parameters', $this->data_params, $this); |
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} |
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} |
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Let’s assume that you have a directory layout like this:
and let’s assume the following content of
Bar.php
:If both files
OtherDir/Foo.php
andSomeDir/Foo.php
are loaded in the same runtime, you will see a PHP error such as the following:PHP Fatal error: Cannot use SomeDir\Foo as Foo because the name is already in use in OtherDir/Foo.php
However, as
OtherDir/Foo.php
does not necessarily have to be loaded and the error is only triggered if it is loaded beforeOtherDir/Bar.php
, this problem might go unnoticed for a while. In order to prevent this error from surfacing, you must import the namespace with a different alias: