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<?php |
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declare(strict_types=1); |
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namespace LM\AuthAbstractor\Implementation; |
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use InvalidArgumentException; |
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use LM\AuthAbstractor\Configuration\IApplicationConfiguration; |
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use LM\AuthAbstractor\Model\IMember; |
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use Symfony\Component\Security\Csrf\TokenStorage\TokenStorageInterface; |
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use Symfony\Component\Security\Csrf\TokenStorage\NativeSessionTokenStorage; |
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use Closure; |
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use Exception; |
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/** |
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* This is a convenience implementation of IApplicationConfiguration. |
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* |
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* It removes |
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* the burden of having to implement (and then instantiate) |
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* IApplicationConfiguration. It assumes the library is used as a Composer |
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* dependency. It also uses native PHP sessions. Finally, it does not let you |
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* define the password complexity settings. If you want more control over these |
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* options, you will need to provide your own implementation of |
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* IApplicationConfiguration. |
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* |
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* @see \LM\AuthAbstractor\Configuration\IApplicationConfiguration |
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* @todo Put implementations in a different library? |
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*/ |
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class ApplicationConfiguration implements IApplicationConfiguration |
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{ |
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/** @var string */ |
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private $appId; |
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/** @var string */ |
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private $assetBaseUri; |
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/** @var string */ |
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private $customTwigDir; |
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/** @var string */ |
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private $composerDir; |
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/** @var string */ |
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private $libDir; |
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/** @var Closure */ |
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private $memberFinder; |
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/** @var mixed[] */ |
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private $pwdSettings; |
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/** @var TokenStorageInterface */ |
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private $tokenStorage; |
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/** @var Closure */ |
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private $u2fRegistrationFinder; |
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/** |
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* @api |
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* @param string $appId The application ID of the application. This is used |
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* for U2F challenges. The application ID is either: |
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* - The ID of the mobile application, if the application is a mobile |
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* application. The format of it differs on Android and on Apple devices. |
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* - The origin of the website (HTTPS protocol + domain name + port). |
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* - A link to an HTTPS link listing all the application IDs of the |
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* application. |
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* @param string $assetBaseUri The local path in which assets are stored |
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* (i.e JavaScript files and CSS files). |
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* @param Closure $memberFinder A callable to find a user from their |
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* username. It must return null if the user does not exist. |
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* @param null|string $customTwigDir A custom Twig directory for overriding |
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* all, or some templates that come with auth-abstractor by default. |
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*/ |
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public function __construct( |
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string $appId, |
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string $assetBaseUri, |
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Closure $memberFinder, |
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?string $customTwigDir = null |
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) { |
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$this->appId = $appId; |
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$this->assetBaseUri = $assetBaseUri; |
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$this->composerDir = $this->findComposerDir(__DIR__); |
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$this->customTwigDir = $customTwigDir; |
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$this->memberFinder = $memberFinder; |
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$this->tokenStorage = new NativeSessionTokenStorage(); |
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$this->u2fRegistrationFinder = $u2fRegistrationFinder ?? function ($username) { |
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return []; |
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}; |
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} |
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/** |
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* @todo Move in another class? |
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*/ |
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private function findComposerDir(string $folder): string |
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{ |
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if (is_dir("{$folder}/vendor") && is_file("{$folder}/composer.json")) { |
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return "{$folder}/vendor"; |
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} |
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if ('/' === $folder) { |
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throw new Exception('Composer not found'); |
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} |
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return $this->findComposerDir(realpath("{$folder}/..")); |
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} |
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public function getAppId(): string |
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{ |
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return $this->appId; |
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} |
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public function getAssetUri(string $assetId): string |
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{ |
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return $this->assetBaseUri.'/'.$assetId; |
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} |
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public function getComposerDir(): string |
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{ |
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return $this->composerDir; |
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} |
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public function getCustomTwigDir(): ?string |
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{ |
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return $this->customTwigDir; |
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} |
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public function getLibdir(): string |
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{ |
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return realpath(__DIR__.'/../../../..'); |
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} |
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/** |
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* @todo Not efficient. |
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* @todo What if the state change between isExistingUsername() and the |
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* second call to $this->memberFinder? |
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* @todo Exception for non existent member. |
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*/ |
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public function getMember(string $username): IMember |
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{ |
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if ($this->isExistingMember($username)) { |
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return ($this->memberFinder)($username); |
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} |
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throw new InvalidArgumentException(); |
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} |
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public function getPwdSettings(): array |
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{ |
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return [ |
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'min_length' => 5, |
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'enforce_min_length' =>true, |
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'uppercase' => false, |
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'special_chars' => false, |
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'numbers' => false, |
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]; |
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} |
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public function getTokenStorage(): TokenStorageInterface |
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{ |
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return $this->tokenStorage; |
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} |
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public function getU2fCertificates(): ?array |
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{ |
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return null; |
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} |
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public function getU2fRegistrations(string $username): array |
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{ |
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return ($this->u2fRegistrationFinder)($username); |
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} |
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public function isExistingMember(string $username): bool |
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{ |
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return null !== ($this->memberFinder)($username); |
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} |
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} |
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