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<?php |
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declare(strict_types=1); |
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namespace PTS\CheckJwtToken; |
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use Emarref\Jwt\Token; |
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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\MiddlewareInterface; |
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use Psr\Http\Server\RequestHandlerInterface; |
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use PTS\JwtService\JwtService; |
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class CheckJwtToken implements MiddlewareInterface |
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{ |
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/** @var string */ |
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protected $tokenAttr = 'token'; |
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/** @var string */ |
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protected $ipAttr = 'client-ip'; |
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/** @var string */ |
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protected $cookieName = 'auth_token'; |
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/** @var JwtService */ |
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protected $jwtService; |
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/** @var bool */ |
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protected $checkIp = true; |
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/** @var bool */ |
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protected $cookieNameWithIp = true; |
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/** |
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* @param JwtService $jwtService |
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*/ |
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public function __construct(JwtService $jwtService) |
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{ |
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$this->jwtService = $jwtService; |
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} |
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/** |
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* @param bool $checkIp |
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* |
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* @return $this |
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*/ |
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public function setCheckIp(bool $checkIp): self |
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{ |
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$this->checkIp = $checkIp; |
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return $this; |
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} |
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/** |
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* @param string $cookieName |
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* |
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* @return $this |
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*/ |
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public function setCookieName(string $cookieName): self |
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{ |
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$this->cookieName = $cookieName; |
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return $this; |
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} |
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/** |
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* @param bool $cookieNameWithIp |
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* |
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* @return $this |
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*/ |
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public function setCookieNameWithIp(bool $cookieNameWithIp): self |
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{ |
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$this->cookieNameWithIp = $cookieNameWithIp; |
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return $this; |
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} |
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/** |
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* @param string $attr |
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* |
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* @return $this |
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*/ |
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public function setIpAttr(string $attr): self |
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{ |
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$this->ipAttr = $attr; |
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return $this; |
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} |
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/** |
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* @param string $attr |
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* |
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* @return $this |
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*/ |
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public function setTokenAttr(string $attr): self |
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{ |
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$this->tokenAttr = $attr; |
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return $this; |
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} |
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/** |
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* @inheritdoc |
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* @throws TokenException |
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*/ |
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public function process(ServerRequestInterface $request, RequestHandlerInterface $next): ResponseInterface |
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{ |
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$jwtToken = $this->getTokenFromRequest($request); |
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if (null === $jwtToken) { |
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return $next->handle($request); |
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} |
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try { |
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$token = $this->jwtService->decode($jwtToken); |
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$this->jwtService->verify($token); |
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$clientIp = $request->getAttribute($this->ipAttr); |
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$this->checkTokenIp($token, $clientIp); |
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$request = $request->withAttribute($this->tokenAttr, $token); |
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} catch (\Exception $e) { |
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throw new TokenException('Bad token', 401, $e); |
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} |
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return $next->handle($request); |
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} |
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/** |
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* @param Token $token |
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* @param string|null $clientIp |
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* |
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* @throws TokenException |
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*/ |
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protected function checkTokenIp(Token $token, string $clientIp = null): void |
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{ |
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if ($this->checkIp) { |
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$tokenIp = $this->getIpFromToken($token); |
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if ($tokenIp && $clientIp !== $tokenIp) { |
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throw new TokenException('Token not valid for this ip'); |
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} |
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} |
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} |
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protected function getIpFromToken(Token $token): ?string |
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{ |
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$tokenIp = $token->getPayload()->findClaimByName('ip'); |
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return $tokenIp !== null ? $tokenIp->getValue() : null; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* |
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* @return null|string |
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*/ |
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protected function getTokenFromRequest(ServerRequestInterface $request): ?string |
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{ |
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return $request->hasHeader('Authorization') |
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? $this->getTokenFromBearerHeader($request) |
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: $this->getTokenFromCookie($request); |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* |
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* @return null|string |
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*/ |
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protected function getTokenFromBearerHeader(ServerRequestInterface $request): ?string |
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{ |
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$header = $request->getHeader('Authorization'); |
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list($type, $value) = explode(' ', $header[0]); |
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return $type === 'Bearer' ? $value : null; |
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} |
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/** |
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* @param ServerRequestInterface $request |
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* |
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* @return null|string |
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*/ |
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protected function getTokenFromCookie(ServerRequestInterface $request): ?string |
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{ |
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$cookiesData = $request->getCookieParams(); |
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$cookieName = $this->getCookieName($request); |
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return $cookiesData[$cookieName] ?? null; |
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} |
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protected function getCookieName(ServerRequestInterface $request): string |
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{ |
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if (!$this->cookieNameWithIp) { |
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return $this->cookieName; |
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} |
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return $this->cookieName.'_'.$request->getAttribute($this->ipAttr); |
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} |
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} |
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