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<?php |
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/** |
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* This file is part of laravel.su package. |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace App\Services; |
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use App\Models\User; |
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use Carbon\Carbon; |
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use Illuminate\Support\Arr; |
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use Illuminate\Contracts\Auth\Guard; |
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use Tymon\JWTAuth\Exceptions\JWTException; |
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use Tymon\JWTAuth\Providers\JWT\JWTInterface; |
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use Illuminate\Contracts\Auth\Authenticatable; |
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use Tymon\JWTAuth\Exceptions\TokenExpiredException; |
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use Symfony\Component\HttpKernel\Exception\BadRequestHttpException; |
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use Symfony\Component\HttpKernel\Exception\UnprocessableEntityHttpException; |
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/** |
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* Class TokenAuth |
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* @package App\Services |
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*/ |
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class TokenAuth |
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{ |
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/** |
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* @var JWTInterface |
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*/ |
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private $jwt; |
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/** |
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* @var Guard |
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*/ |
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private $guard; |
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/** |
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* TokenAuth constructor. |
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* @param JWTInterface $jwt |
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* @param Guard $guard |
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*/ |
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public function __construct(JWTInterface $jwt, Guard $guard) |
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{ |
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$this->jwt = $jwt; |
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$this->guard = $guard; |
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} |
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/** |
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* @param string $email |
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* @param string $password |
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* @return Authenticatable |
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*/ |
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public function attemptFromEmailAndPassword(string $email, string $password): ?Authenticatable |
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{ |
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if (! $this->guard->validate(['email' => $email, 'password' => $password])) { |
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return null; |
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} |
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return User::whereEmail($email)->first(); |
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} |
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/** |
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* @param int $id |
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* @param string $password |
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* @return Authenticatable |
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*/ |
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public function resolveFromIdAndPassword(int $id, string $password): ?Authenticatable |
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{ |
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if (! $this->guard->validate(['id' => $id, 'password' => $password])) { |
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return null; |
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} |
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return User::find($id); |
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} |
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/** |
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* @param Guard $guard |
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* @return string |
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*/ |
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public function fromGuard(Guard $guard): string |
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{ |
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return $this->fromUser($guard->check() ? $guard->user() : $this->guest()); |
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} |
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/** |
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* @param Authenticatable $user |
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* @return string |
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*/ |
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public function fromUser(Authenticatable $user): string |
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{ |
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return $this->encode([ |
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'user' => [ |
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'id' => $user->getAuthIdentifier(), |
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'password' => $user->getAuthPassword(), |
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], |
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'created' => Carbon::now()->toRfc3339String(), |
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'guest' => 0 === (int)$user->getAuthIdentifier(), |
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'token' => $user->getRememberToken(), |
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]); |
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} |
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/** |
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* @param array $payload |
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* @return string |
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*/ |
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public function encode(array $payload): string |
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{ |
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return $this->jwt->encode($payload); |
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} |
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/** |
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* @return Authenticatable |
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*/ |
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public function guest(): Authenticatable |
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{ |
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return new User(['id' => 0, 'name' => 'Guest']); |
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} |
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/** |
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* @param string $token |
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* @return Authenticatable |
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* @throws BadRequestHttpException |
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* @throws UnprocessableEntityHttpException |
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*/ |
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public function fromToken(string $token): Authenticatable |
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{ |
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try { |
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$userInfo = $this->decode($token); |
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$this->verifyTokenCreated($userInfo); |
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} catch (TokenExpiredException $e) { |
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throw new BadRequestHttpException('Token lifetime is timed out.'); |
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} catch (JWTException $invalidException) { |
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throw new BadRequestHttpException('Broken api token.'); |
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} |
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if (false !== Arr::get($userInfo, 'guest', true)) { |
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return $this->resolveExistingUser($userInfo); |
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} |
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return $this->guest(); |
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} |
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/** |
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* @param array $userInfo |
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* @throws TokenExpiredException |
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*/ |
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private function verifyTokenCreated(array $userInfo): void |
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{ |
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$created = Carbon::parse($userInfo['created'] ?? '0001-00-00 00:00'); |
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if (Carbon::now()->subMinutes(config('jwt.ttl')) > $created) { |
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throw new TokenExpiredException(); |
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} |
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} |
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/** |
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* @param string $token |
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* @return array |
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*/ |
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public function decode(string $token): array |
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{ |
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return $this->jwt->decode($token); |
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} |
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/** |
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* @param array $userInfo |
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* @return mixed |
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* @throws UnprocessableEntityHttpException |
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*/ |
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private function resolveExistingUser(array $userInfo) |
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{ |
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[$id, $password, $token] = [ |
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(int)Arr::get($userInfo, 'user.id'), |
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(string)Arr::get($userInfo, 'user.password'), |
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(string)Arr::get($userInfo, 'token'), |
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]; |
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$user = User::where('id', $id)->where('password', $password)->first(); |
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if ($user->remember_token !== $token) { |
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throw new UnprocessableEntityHttpException('Invalid remember token'); |
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} |
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if (! $user) { |
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throw new UnprocessableEntityHttpException('Invalid user credentials.'); |
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} |
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return $user; |
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} |
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} |
This check marks access to variables or properties that have not been declared yet. While PHP has no explicit notion of declaring a variable, accessing it before a value is assigned to it is most likely a bug.