57 lines
2.1 KiB
PHP
57 lines
2.1 KiB
PHP
<?php
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namespace lib;
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/**
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* LetsEncrypt
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*/
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class LetsEncrypt
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{
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const HTTP_OK = 200;
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const HTTP_CHALLENGE_URL = '/.well-known/acme-challenge/';
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/**
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* perform a cURL call on the remote resource
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* the cURL call follows redirections and pushes the last valid URL to an array
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* @param Array $domains list of domains
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* @return Array $checked_domains list of checked domains
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*/
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public function checkRemoteResourceAvailability($domains)
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{
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$curl_multi = curl_multi_init();
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$curl_handles = array();
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$checked_domains = array();
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foreach ($domains as $key => $domain) {
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$curl_handles[$key] = curl_init($domain . self::HTTP_CHALLENGE_URL);
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// setting cURL options
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curl_setopt($curl_handles[$key], CURLOPT_TIMEOUT, 3);
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curl_setopt($curl_handles[$key], CURLOPT_HEADER, true);
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curl_setopt($curl_handles[$key], CURLOPT_NOBODY, true);
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curl_setopt($curl_handles[$key], CURLOPT_SSL_VERIFYPEER, false);
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curl_setopt($curl_handles[$key], CURLOPT_FOLLOWLOCATION, true);
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curl_setopt($curl_handles[$key], CURLOPT_MAXREDIRS, 3);
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curl_setopt($curl_handles[$key], CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP, CURLPROTO_HTTPS);
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curl_setopt($curl_handles[$key], CURLOPT_RETURNTRANSFER, true);
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curl_multi_add_handle($curl_multi, $curl_handles[$key]);
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}
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do {
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curl_multi_exec($curl_multi, $active);
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} while ($active);
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foreach ($curl_handles as $curl_handle) {
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$returned_http_code = curl_getinfo($curl_handle, CURLINFO_HTTP_CODE);
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$returned_http_url = curl_getinfo($curl_handle, CURLINFO_EFFECTIVE_URL);
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if ($returned_http_code === self::HTTP_OK && strpos($returned_http_url, self::HTTP_CHALLENGE_URL)) {
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array_push($checked_domains, $returned_http_url);
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}
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curl_multi_remove_handle($curl_multi, $curl_handle);
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}
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curl_multi_close($curl_multi);
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return $checked_domains;
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}
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}
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