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<?php |
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declare(strict_types = 1); |
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/** |
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* Micro |
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* |
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* @author Raffael Sahli <[email protected]> |
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* @copyright Copyright (c) 2017 gyselroth GmbH (https://gyselroth.com) |
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* @license MIT https://opensource.org/licenses/MIT |
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*/ |
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namespace Micro; |
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use \Micro\Auth\Exception; |
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use \Micro\Auth\Adapter\AdapterInterface; |
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use \Micro\Auth\Identity; |
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use \Psr\Log\LoggerInterface as Logger; |
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use \Micro\Auth\AttributeMap; |
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class Auth |
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{ |
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/** |
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* Adapter |
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* |
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* @var array |
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*/ |
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protected $adapter = []; |
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/** |
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* Identity |
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* |
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* @var Identity |
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*/ |
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protected $identity; |
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/** |
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* Logger |
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* |
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* @var Logger |
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*/ |
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protected $logger; |
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/** |
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* Identity class |
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* |
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* @var string |
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*/ |
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protected $identity_class = Identity::class; |
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/** |
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* Attribute map class |
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* |
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* @var string |
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*/ |
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protected $attribute_map_class = AttributeMap::class; |
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/** |
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* Initialize |
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* |
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* @param Iterable $config |
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* @param Logger $logger |
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* @return void |
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*/ |
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public function __construct(? Iterable $config = null, Logger $logger) |
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{ |
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$this->logger = $logger; |
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$this->setOptions($config); |
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} |
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/** |
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* Set options |
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* |
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* @param Iterable $config |
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* @return Auth |
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*/ |
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public function setOptions(? Iterable $config = null) : Auth |
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{ |
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if ($config === null) { |
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return $this; |
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} |
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foreach ($config as $option => $value) { |
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switch ($option) { |
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case 'identity_class': |
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case 'attribute_map_class': |
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$this->{$option} = (string)$value; |
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break; |
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case 'adapter': |
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foreach ($value as $name => $adapter) { |
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if (!isset($adapter['enabled']) || $adapter['enabled'] === '1') { |
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if (!isset($adapter['class'])) { |
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throw new Exception('class option is required'); |
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} |
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if (isset($adapter['config'])) { |
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$config = $adapter['config']; |
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} else { |
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$config = null; |
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} |
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$this->addAdapter($name, $adapter['class'], $config); |
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} else { |
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$this->logger->debug("skip disabled authentication adapter [".$name."]", [ |
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'category' => get_class($this) |
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]); |
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} |
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} |
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break; |
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} |
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} |
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return $this; |
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} |
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/** |
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* Has adapter |
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* |
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* @param string $name |
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* @return bool |
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*/ |
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public function hasAdapter(string $name): bool |
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{ |
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return isset($this->adapter[$name]); |
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} |
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/** |
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* Add adapter |
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* |
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* @param string $name |
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* @param string $class |
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* @param Iterable $config |
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* @return AdapterInterface |
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*/ |
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public function addAdapter(string $name, string $class, ? Iterable $config = null) : AdapterInterface |
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{ |
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if ($this->hasAdapter($name)) { |
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throw new Exception('auth adapter '.$name.' is already registered'); |
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} |
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$adapter = new $class($config, $this->logger); |
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if (!($adapter instanceof AdapterInterface)) { |
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throw new Exception('auth adapter must include AdapterInterface interface'); |
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} |
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$this->adapter[$name] = $adapter; |
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return $adapter; |
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} |
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/** |
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* Inject adapter |
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* |
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* @param string $name |
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* @param AdapterInterface $adapter |
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* @return AdapterInterface |
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*/ |
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public function injectAdapter(string $name, AdapterInterface $adapter) : AdapterInterface |
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{ |
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if ($this->hasAdapter($name)) { |
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throw new Exception('auth adapter '.$name.' is already registered'); |
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} |
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$this->adapter[$name] = $adapter; |
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return $adapter; |
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} |
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/** |
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* Get adapter |
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* |
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* @param string $name |
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* @return AdapterInterface |
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*/ |
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public function getAdapter(string $name): AdapterInterface |
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{ |
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if (!$this->hasAdapter($name)) { |
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throw new Exception('auth adapter '.$name.' is not registered'); |
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} |
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return $this->adapter[$name]; |
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} |
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/** |
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* Get adapters |
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* |
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* @param array $adapters |
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* @return array |
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*/ |
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public function getAdapters(array $adapters = []): array |
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{ |
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if (empty($adapter)) { |
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return $this->adapter; |
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} else { |
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$list = []; |
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foreach ($adapter as $name) { |
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if (!$this->hasAdapter($name)) { |
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throw new Exception('auth adapter '.$name.' is not registered'); |
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} |
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$list[$name] = $this->adapter[$name]; |
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} |
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return $list; |
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} |
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} |
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/** |
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* Create identity |
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* |
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* @param AdapterInterface $adapter |
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* @return Identity |
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*/ |
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protected function createIdentity(AdapterInterface $adapter): Identity |
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{ |
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$map = new $this->attribute_map_class($adapter->getAttributeMap(), $this->logger); |
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$this->identity = new $this->identity_class($adapter, $map, $this->logger); |
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return $this->identity; |
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} |
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/** |
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* Authenticate |
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* |
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* @return bool |
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*/ |
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public function requireOne(): bool |
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{ |
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$result = false; |
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foreach ($this->adapter as $name => $adapter) { |
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try { |
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if ($adapter->authenticate()) { |
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$this->createIdentity($adapter); |
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$this->logger->info("identity [{$this->identity->getIdentifier()}] authenticated over adapter [{$name}]", [ |
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'category' => get_class($this) |
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]); |
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$_SERVER['REMOTE_USER'] = $this->identity->getIdentifier(); |
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return true; |
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} |
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} catch (\Exception $e) { |
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$this->logger->error("failed authenticate user, unexcepted exception was thrown", [ |
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'category' => get_class($this), |
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'exception'=> $e |
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]); |
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} |
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$this->logger->debug("auth adapter [{$name}] failed", [ |
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'category' => get_class($this) |
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]); |
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} |
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$this->logger->warning("all authentication adapter have failed", [ |
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'category' => get_class($this) |
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]); |
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return false; |
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} |
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/** |
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* Get identity |
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* |
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* @return Identity |
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*/ |
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public function getIdentity(): Identity |
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{ |
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if (!$this->isAuthenticated()) { |
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throw new Exception('no valid authentication yet'); |
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} else { |
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return $this->identity; |
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} |
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} |
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/** |
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* Check if valid identity exists |
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* |
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* @return bool |
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*/ |
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public function isAuthenticated(): bool |
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{ |
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return ($this->identity instanceof Identity); |
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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: