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#!/usr/bin/env php |
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<?php |
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class Tls12Checker |
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{ |
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const API_URI = 'api.commercetools.com'; |
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const URIS = [ |
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'auth.commercetools.com', |
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'api.commercetools.com', |
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'auth.commercetools.co', |
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'api.commercetools.co', |
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]; |
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public function allowedCiphers() |
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{ |
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return [ |
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'TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA', |
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'TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256', |
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'TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA', |
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'TLS_ECDHE_ECDSA_WITH_AES_256_GCM_SHA384', |
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'TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256', |
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'TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA', |
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'TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256', |
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'TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA', |
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'TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384', |
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'TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256', |
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]; |
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} |
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/** |
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* @return array |
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* @throws \Exception |
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*/ |
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private function getSupportedCiphers() |
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{ |
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$ch = curl_init(); |
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curl_setopt($ch, CURLOPT_URL, "https://www.howsmyssl.com/a/check"); |
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curl_setopt($ch, CURLOPT_SSLVERSION, 6); |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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$response = curl_exec($ch); |
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curl_close($ch); |
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$tlsInfo = json_decode($response, true); |
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if ($response === false) { |
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throw new \Exception('Connection not connect using TLS 1.2', 1); |
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} |
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return isset($tlsInfo['given_cipher_suites']) ? $tlsInfo['given_cipher_suites'] : []; |
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} |
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/** |
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* @throws \Exception |
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*/ |
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private function checkCiphers() |
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{ |
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$supportedCiphers = $this->getSupportedCiphers(); |
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$allowedCiphers = $this->allowedCiphers(); |
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$diff = array_diff($allowedCiphers, $supportedCiphers); |
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if (count($diff) < count($allowedCiphers)) { |
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return; |
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}; |
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throw new \Exception('None of the allowed cipher suites are supported by curl: ' . implode(', ', $allowedCiphers), 1); |
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} |
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/** |
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* @param string $apiUri |
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* @param string $cipher |
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* @throws Exception |
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*/ |
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private function checkApiConnection($apiUri = self::API_URI, $cipher = null) |
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{ |
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$ch = curl_init(); |
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curl_setopt($ch, CURLOPT_URL, 'https://' . $apiUri); |
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curl_setopt($ch, CURLOPT_SSLVERSION, 6); |
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if (!is_null($cipher)) { |
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curl_setopt($ch, CURLOPT_SSL_CIPHER_LIST, $cipher); |
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} |
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); |
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$response = curl_exec($ch); |
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curl_close($ch); |
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if ($response == false) { |
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throw new \Exception('Could not connect not connect to API using TLS 1.2' . (is_null($cipher) ? '' : ' with cipher ' . $cipher), 1); |
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} |
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} |
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private function checkCurlVersion() |
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{ |
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$curlVersion = curl_version(); |
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$supportsTLS12 = true; |
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if (version_compare(curl_version()['version'], '7.34.0', '<')) { |
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$supportsTLS12 = false; |
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} |
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echo 'Curl version: ' . ($supportsTLS12 ? "\033[32m" : "\033[31m") . curl_version()['version'] . "\033[0m" . ($supportsTLS12 ? '' : '(TLS 1.2 not supported)') . PHP_EOL; |
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if (isset($curlVersion['ssl_version'])) { |
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echo 'Curl SSL Library: ' . curl_version()['ssl_version'] . PHP_EOL; |
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} |
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} |
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/** |
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* @return int |
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*/ |
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public function check() |
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{ |
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$this->checkCurlVersion(); |
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echo "Checking TLS 1.2 connection ... "; |
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try { |
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$this->checkCiphers(); |
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foreach (self::URIS as $uri) { |
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$this->checkApiConnection($uri); |
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} |
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} catch (\Exception $exception) { |
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echo "\033[31mFailed\033[0m" . PHP_EOL; |
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echo $exception->getMessage() . PHP_EOL; |
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return (int)$exception->getCode(); |
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} |
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echo "\033[32mOK\033[0m" . PHP_EOL; |
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return 0; |
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} |
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// private function availableCiphers() |
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// { |
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// $localCiphers = explode(' ', exec('openssl ciphers \'ALL:eNULL\' | tr \':\' \' \'')); |
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// $allowedCiphers = []; |
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// foreach ($localCiphers as $localCipher) { |
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// exec('echo -n | openssl s_client -connect ' . self::API_URI . ':443 -cipher ' . $localCipher . ' -tls1_2 2>&1', $dummy, $status); |
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// if ($status === 0) { |
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// $allowedCiphers[] = $localCipher; |
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// } |
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// } |
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// |
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// return $allowedCiphers; |
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// } |
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// |
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// private function checkAvailableCiphers() |
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// { |
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// $availableCiphers = $this->availableCiphers(); |
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// foreach ($availableCiphers as $cipher) { |
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// echo 'Testing ' . $cipher . '...'; |
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// try { |
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// $this->checkApiConnection(self::API_URI, $cipher); |
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// echo "\033[32mOK\033[0m" . PHP_EOL; |
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// } catch (\Exception $exception) { |
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// echo "\033[31mFailed\033[0m" . PHP_EOL; |
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// } |
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// } |
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// } |
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} |
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$checker = new Tls12Checker(); |
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exit($checker->check()); |
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