117 lines
2.6 KiB
PHP
117 lines
2.6 KiB
PHP
<?php
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/**
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* Checks that one or more URLs are reachable via HTTP.
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* Note that the HTTP connectivity can just be verified from the server to the remote URL,
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* it can still fail if the URL in question is requested by the client, e.g. through an iframe.
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*
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* Requires curl to present, so ensure to check it before with the following:
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* <code>EnvironmentCheckSuite::register('check', 'HasFunctionCheck("curl_init")', "Does PHP have CURL support?");</code>
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*/
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class ExternalURLCheck implements EnvironmentCheck {
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/**
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* @var array
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*/
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protected $urls = array();
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/**
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* @var Int Timeout in seconds.
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*/
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protected $timeout;
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/**
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* @param string $urls Space-separated list of absolute URLs.
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* @param int $timeout
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*/
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function __construct($urls, $timeout = 15) {
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if($urls) $this->urls = explode(' ', $urls);
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$this->timeout = $timeout;
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}
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/**
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* @inheritdoc
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*
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* @return array
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*/
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function check() {
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$urls = $this->getURLs();
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$chs = array();
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foreach($urls as $url) {
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$ch = curl_init();
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$chs[] = $ch;
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curl_setopt_array($ch, $this->getCurlOpts($url));
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}
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// Parallel execution for faster performance
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$mh = curl_multi_init();
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foreach($chs as $ch) curl_multi_add_handle($mh,$ch);
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$active = null;
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// Execute the handles
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do {
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$mrc = curl_multi_exec($mh, $active);
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curl_multi_select($mh);
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} while ($active > 0);
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while ($active && $mrc == CURLM_OK) {
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if (curl_multi_select($mh) != -1) {
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do {
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$mrc = curl_multi_exec($mh, $active);
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} while ($mrc == CURLM_CALL_MULTI_PERFORM);
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}
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}
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$hasError = false;
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$msgs = array();
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foreach($chs as $ch) {
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$url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
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$code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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if(curl_errno($ch) || $code >= 400) {
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$hasError = true;
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$msgs[] = sprintf(
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'Error retrieving "%s": %s (Code: %s)',
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$url,
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curl_error($ch),
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$code
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);
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} else {
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$msgs[] = sprintf(
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'Success retrieving "%s" (Code: %s)',
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$url,
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$code
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);
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}
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}
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// Close the handles
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foreach($chs as $ch) curl_multi_remove_handle($mh, $ch);
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curl_multi_close($mh);
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if($hasError) {
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return array(EnvironmentCheck::ERROR, implode(', ', $msgs));
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} else {
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return array(EnvironmentCheck::OK, implode(', ', $msgs));
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}
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}
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/**
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* @return array
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*/
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protected function getCurlOpts($url) {
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return array(
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CURLOPT_URL => $url,
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CURLOPT_HEADER => 0,
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CURLOPT_RETURNTRANSFER => 1,
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CURLOPT_FAILONERROR => 1,
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CURLOPT_TIMEOUT => $this->timeout,
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);
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}
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/**
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* @return array
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*/
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protected function getURLs() {
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return $this->urls;
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}
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}
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