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<?php |
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/* |
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* The MIT License (MIT) |
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* |
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* Copyright (c) 2014-2018 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\Object; |
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use Assert\Assertion; |
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use Psr\Cache\CacheItemPoolInterface; |
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/** |
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* Class DownloadedJWKSet. |
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*/ |
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abstract class DownloadedJWKSet extends BaseJWKSet implements JWKSetInterface |
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{ |
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use JWKSetPEM; |
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/** |
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* @var string |
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*/ |
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private $url; |
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/** |
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* @var null|\Psr\Cache\CacheItemPoolInterface |
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*/ |
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private $cache; |
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/** |
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* @var int |
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*/ |
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private $ttl; |
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/** |
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* @var bool |
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*/ |
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private $allow_unsecured_connection; |
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/** |
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* DownloadedJWKSet constructor. |
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* |
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* @param string $url |
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* @param \Psr\Cache\CacheItemPoolInterface|null $cache |
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* @param int $ttl |
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* @param bool $allow_unsecured_connection |
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* @param bool $allow_http_connection |
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*/ |
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public function __construct($url, CacheItemPoolInterface $cache = null, $ttl = 86400, $allow_unsecured_connection = false, $allow_http_connection = false) |
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{ |
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Assertion::boolean($allow_unsecured_connection); |
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Assertion::boolean($allow_http_connection); |
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Assertion::integer($ttl); |
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Assertion::min($ttl, 0); |
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Assertion::false(false === filter_var($url, FILTER_VALIDATE_URL, FILTER_FLAG_SCHEME_REQUIRED | FILTER_FLAG_HOST_REQUIRED), 'Invalid URL.'); |
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$allowed_protocols = ['https']; |
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if (true === $allow_http_connection) { |
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$allowed_protocols[] = 'http'; |
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} |
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Assertion::inArray(mb_substr($url, 0, mb_strpos($url, '://', 0, '8bit'), '8bit'), $allowed_protocols, sprintf('The provided sector identifier URI is not valid: scheme must be one of the following: %s.', json_encode($allowed_protocols))); |
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$this->url = $url; |
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$this->cache = $cache; |
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$this->ttl = $ttl; |
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$this->allow_unsecured_connection = $allow_unsecured_connection; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function addKey(JWKInterface $key) |
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{ |
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//Not available |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function prependKey(JWKInterface $key) |
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{ |
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//Not available |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function removeKey($index) |
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{ |
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//Not available |
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} |
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/** |
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* @return string |
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*/ |
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protected function getContent() |
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{ |
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$cache_key = sprintf('JWKFactory-Content-%s', hash('sha512', $this->url)); |
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if (null !== $this->cache) { |
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$item = $this->cache->getItem($cache_key); |
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if (!$item->isHit()) { |
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$content = $this->downloadContent(); |
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$item->set($content); |
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if (0 !== $this->ttl) { |
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$item->expiresAfter($this->ttl); |
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} |
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$this->cache->save($item); |
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return $content; |
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} else { |
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return $item->get(); |
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} |
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} |
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return $this->downloadContent(); |
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} |
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/** |
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* @throws \InvalidArgumentException Has CURL error message and the CURL error |
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* number as exception code. |
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* Throws exception with error number 0 |
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* if the error is not related to CURL. |
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* |
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* @return string |
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*/ |
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private function downloadContent() |
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{ |
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$params = [ |
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CURLOPT_RETURNTRANSFER => true, |
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CURLOPT_URL => $this->url, |
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]; |
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if (false === $this->allow_unsecured_connection) { |
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$params[CURLOPT_SSL_VERIFYPEER] = true; |
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$params[CURLOPT_SSL_VERIFYHOST] = 2; |
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} |
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$ch = curl_init(); |
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curl_setopt_array($ch, $params); |
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$content = curl_exec($ch); |
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try { |
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Assertion::false(false === $content, 'Failed to load JWK contents: '); |
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} catch (\Assert\AssertionFailedException $e) { |
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$curlError = curl_error($ch); |
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$curlErrorNumber = curl_errno($ch); |
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throw new \InvalidArgumentException( |
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$e->getMessage().$curlError, |
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$curlErrorNumber |
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); |
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} catch (\Exception $e) { |
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throw new \InvalidArgumentException( |
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'Failed to load JWK contents: '.$e->getMessage(), |
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0 |
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); |
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} finally { |
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curl_close($ch); |
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} |
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return $content; |
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} |
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} |
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Spomky-Labs /
jose
