58 lines
1.4 KiB
PHP
58 lines
1.4 KiB
PHP
<?php
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namespace SilverStripe\ExternalLinks\Tasks;
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use Psr\SimpleCache\CacheInterface;
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use SilverStripe\Core\Injector\Injector;
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/**
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* Check links using curl
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*/
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class CurlLinkChecker implements LinkChecker
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{
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/**
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* Return cache
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*
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* @return CacheInterface
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*/
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protected function getCache()
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{
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return Injector::inst()->get(CacheInterface::class . '.CurlLinkChecker');
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}
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/**
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* Determine the http status code for a given link
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*
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* @param string $href URL to check
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* @return int HTTP status code, or null if not checkable (not a link)
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*/
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public function checkLink($href)
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{
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// Skip non-external links
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if (!preg_match('/^https?[^:]*:\/\//', $href)) {
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return null;
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}
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// Check if we have a cached result
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$cacheKey = md5($href);
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$result = $this->getCache()->get($cacheKey, false);
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if ($result !== false) {
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return $result;
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}
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// No cached result so just request
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$handle = curl_init($href);
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curl_setopt($handle, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($handle, CURLOPT_CONNECTTIMEOUT, 5);
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curl_setopt($handle, CURLOPT_TIMEOUT, 10);
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curl_exec($handle);
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$httpCode = curl_getinfo($handle, CURLINFO_HTTP_CODE);
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curl_close($handle);
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// Cache result
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$this->getCache()->set($cacheKey, $httpCode);
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return $httpCode;
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}
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}
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