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<?php |
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declare(strict_types=1); |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2017 Spomky-Labs |
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* |
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* This software may be modified and distributed under the terms |
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* of the MIT license. See the LICENSE file for details. |
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*/ |
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namespace Jose\Component\Checker; |
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use Jose\Component\Core\JWT; |
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/** |
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* Class HeaderCheckerManager. |
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*/ |
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final class HeaderCheckerManager |
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{ |
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/** |
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* @var HeaderChecker[] |
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*/ |
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private $checkers = []; |
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/** |
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* @var TokenTypeSupport[] |
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*/ |
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private $tokenTypes = []; |
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/** |
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* HeaderCheckerManager constructor. |
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* |
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* @param HeaderChecker[] $checkers |
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* @param TokenTypeSupport[] $tokenTypes |
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*/ |
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private function __construct(array $checkers, array $tokenTypes) |
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{ |
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foreach ($checkers as $checker) { |
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$this->add($checker); |
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} |
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foreach ($tokenTypes as $tokenType) { |
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$this->addTokenTypeSupport($tokenType); |
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} |
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} |
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/** |
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* @param HeaderChecker[] $checkers |
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* @param TokenTypeSupport[] $tokenTypes |
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* |
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* @return HeaderCheckerManager |
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*/ |
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public static function create(array $checkers, array $tokenTypes): self |
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{ |
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return new self($checkers, $tokenTypes); |
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} |
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/** |
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* @return HeaderChecker[] |
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*/ |
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public function getCheckers(): array |
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{ |
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return $this->checkers; |
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} |
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/** |
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* @param TokenTypeSupport $tokenType |
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* |
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* @return HeaderCheckerManager |
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*/ |
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private function addTokenTypeSupport(TokenTypeSupport $tokenType): self |
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{ |
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$this->tokenTypes[] = $tokenType; |
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return $this; |
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} |
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/** |
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* @param HeaderChecker $checker |
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* |
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* @return HeaderCheckerManager |
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*/ |
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private function add(HeaderChecker $checker): self |
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{ |
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$header = $checker->supportedHeader(); |
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$this->checkers[$header] = $checker; |
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return $this; |
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} |
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/** |
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* @param JWT $jwt |
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* @param int $component |
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*/ |
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public function check(JWT $jwt, int $component) |
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{ |
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foreach ($this->tokenTypes as $tokenType) { |
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if ($tokenType->supports($jwt)) { |
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$protected = []; |
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$unprotected = []; |
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$tokenType->retrieveTokenHeaders($jwt, $component, $protected, $unprotected); |
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$this->checkDuplicatedHeaderParameters($protected, $unprotected); |
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$this->checkHeaders($protected, $unprotected); |
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return; |
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} |
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} |
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throw new \InvalidArgumentException('Unsupported token type.'); |
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} |
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/** |
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* @param array $header1 |
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* @param array $header2 |
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*/ |
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private function checkDuplicatedHeaderParameters(array $header1, array $header2) |
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{ |
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$inter = array_intersect_key($header1, $header2); |
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if (!empty($inter)) { |
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throw new \InvalidArgumentException(sprintf('The header contains duplicated entries: %s.', implode(', ', array_keys($inter)))); |
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} |
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} |
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/** |
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* @param array $protected |
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* @param array $headers |
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*/ |
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private function checkHeaders(array $protected, array $headers) |
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{ |
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$checkedHeaders = []; |
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foreach ($this->checkers as $header => $checker) { |
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if ($checker->protectedHeaderOnly()) { |
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if (array_key_exists($header, $protected)) { |
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$checker->checkHeader($protected[$header]); |
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$checkedHeaders[] = $header; |
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} elseif (array_key_exists($header, $headers)) { |
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throw new \InvalidArgumentException(sprintf('The header "%s" must be protected.', $header)); |
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} |
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} else { |
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if (array_key_exists($header, $protected)) { |
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$checker->checkHeader($protected[$header]); |
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$checkedHeaders[] = $header; |
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} elseif (array_key_exists($header, $headers)) { |
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$checker->checkHeader($headers[$header]); |
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$checkedHeaders[] = $header; |
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} |
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} |
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} |
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$this->checkCriticalHeader($protected, $headers, $checkedHeaders); |
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} |
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/** |
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* @param array $protected |
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* @param array $headers |
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* @param array $checkedHeaders |
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*/ |
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private function checkCriticalHeader(array $protected, array $headers, array $checkedHeaders) |
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{ |
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if (array_key_exists('crit', $protected)) { |
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if (!is_array($protected['crit'])) { |
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throw new \InvalidArgumentException('The header "crit" mus be a list of header parameters.'); |
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} |
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$diff = array_diff($protected['crit'], $checkedHeaders); |
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if (!empty($diff)) { |
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throw new \InvalidArgumentException(sprintf('One or more headers are marked as critical, but they are missing or have not been checked: %s.', implode(', ', array_values($diff)))); |
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} |
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} elseif (array_key_exists('crit', $headers)) { |
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throw new \InvalidArgumentException('The header parameter "crit" must be protected.'); |
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} |
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} |
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} |
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web-token /
jwt-framework
