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<?php /** * Helps install a free SSL certificate from LetsEncrypt, fixes mixed content, insecure content by redirecting to https, and forces SSL on all pages. * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in all * copies or substantial portions of the Software. * * Plugin Name: Free SSL Certificate & HTTPS Redirector for WordPress - SSL Zen * Plugin URI: https://sslzen.com * Description: Helps install a free SSL certificate from LetsEncrypt, fixes mixed content, insecure content by redirecting to https, and forces SSL on all pages. * Version: 1.9.6 * Author: SSL * Author URI: http://sslzen.com * License: GNU General Public License v3.0 * License URI: http://www.gnu.org/licenses/gpl-3.0.html * Text Domain: ssl-zen * Domain Path: ssl_zen/languages * * @author SSL * @category Plugin * @license http://www.gnu.org/licenses/gpl-3.0.html GNU General Public License v3.0 / use LEClient\LEClient; use LEClient\LEOrder; if (!class_exists('ssl_zen_certificate')) { /* * Class to manage ssl certificates by interacting with LEClient library / class ssl_zen_certificate { public static $client = null; public static $order = null; public static $pendingAuths = []; /* * Create client on Let's Encrypt * * @param bool $redirect * * @return LEClient Returns the object of the Let's Encrypt Client * @since 1.0 * @static / public static function createClient($redirect = true) { try { if ( ! empty( self::$client ) ) { return self::$client; } $email = get_option('ssl_zen_email', ''); // Check the log flag if (!empty(get_option('ssl_zen_enable_debug', ''))) { $log = LEClient::LOG_DEBUG; } else { $log = LEClient::LOG_STATUS; } if (!defined('SSL_ZEN_LE_STAGING')) { define('SSL_ZEN_LE_STAGING', false); } $keys_dir = self::getKeysDir(); // Create the keys directory if it doesn't exist if (!file_exists($keys_dir)) { mkdir($keys_dir, 0700, true); } self::$client = new LEClient(array($email), SSL_ZEN_LE_STAGING, $log, $keys_dir); return self::$client; } catch (Exception $e) { self::redirect_on_error($e, $redirect); } return null; } public static function getKeysDir() { $keys_dir_name = get_option('ssl_zen_keys_dir_name', ''); if (empty($keys_dir_name)) { // Generate a unique and hard-to-guess directory name $keys_dir_name = 'keys_' . wp_generate_password(12, false, false); update_option('ssl_zen_keys_dir_name', $keys_dir_name); } return SSL_ZEN_DIR . $keys_dir_name . '/'; } /* * Remove the htaccess file for well-known folder in order to force https to it / public static function removeHtaccessForWellKnown() { $wellKnownHtaccessPath = ABSPATH . '.well-known/acme-challenge/.htaccess'; # If it exists, delete it if (file_exists($wellKnownHtaccessPath)) { unlink($wellKnownHtaccessPath); } } /* * Generates an order on Let's Encrypt * * @param bool $redirect * * @return LEOrder Returns the object of the Let's Encrypt Order * @since 1.0 * @static / public static function generateOrder($redirect = true) { try { if ( ! empty( self::$order ) ) { return self::$order; } $baseDomainName = get_option('ssl_zen_base_domain', ''); $domains = get_option('ssl_zen_domains', array()); $client = self::createClient($redirect); if (!empty($client)) { # Remove the .htaccess file from well-known self::removeHtaccessForWellKnown(); self::$order = $client->getOrCreateOrder($baseDomainName, $domains); return self::$order; } else { return null; } } catch (Exception $e) { self::redirect_on_error($e, $redirect); } return null; } /* * Checks for all the pending authorizations on Let's Encrypt for an order and * update the authorization status * * @param $type * @param bool $redirect * * @since 1.0 * @static / public static function updateAuthorizations($type, $redirect = true) { try { $arrPending = self::getPendingAuthorization($type, $redirect); if (is_array($arrPending) && count($arrPending)) { $order = self::generateOrder($redirect); foreach ($arrPending as $pending) { $order->verifyPendingOrderAuthorization($pending['identifier'], $type, false); } } } catch (Exception $e) { self::redirect_on_error($e, $redirect); } } /* * Check if the authorizations are valid for the particular order * * @param bool $redirect * * @return Boolean Returns the status of domain verification * @since 1.0 * @static / public static function validateAuthorization($redirect = true) { try { $order = self::generateOrder($redirect); if (empty($order)) { throw new Exception('Order is empty'); } return $order->allAuthorizationsValid(); } catch (Exception $e) { self::redirect_on_error($e, $redirect); } return false; } /* * Fetches all the pending authorizations for the particular order * * @param $type * * @param bool $redirect * * @return array\|object Returns all the pending authorizations * @since 1.0 * @static / public static function getPendingAuthorization($type, $redirect = true) { try { if ( ! empty( self::$pendingAuths[$type] ) ) { return self::$pendingAuths[$type]; } $order = self::generateOrder($redirect); if (!empty($order)) { self::$pendingAuths[$type] = $order->getPendingAuthorizations($type); return self::$pendingAuths[$type]; } else { return null; } } catch (Exception $e) { self::redirect_on_error($e, $redirect); } return []; } /* * Finalizes the Let's Encrypt order * * @since 1.0 * @static / public static function finalizeOrder() { try { $order = ssl_zen_certificate::generateOrder(); if (!$order->isFinalized()) { $order->finalizeOrder(); } } catch (Exception $e) { self::redirect_on_error($e); } } /* * Generates and returns the path in the form of array for the certificates for a particular order * * @return bool Paths of the certificates generated for a particular order * @since 1.0 * @static / public static function generateCertificate() { try { $order = ssl_zen_certificate::generateOrder(); if ($order->isFinalized()) { $order->getCertificate(); } $isCreated = $order->getCertificate(); if ($isCreated) { $keyDir = ssl_zen_certificate::getKeysDir(); // When certificates are created, split the file to get the CA bundle cert' $fullchainPath = $keyDir . 'fullchain.crt'; $certificatePath = $keyDir . 'certificate.crt'; $cabundlePath = $keyDir . 'cabundle.crt'; $fullchainData = file_get_contents($fullchainPath); $certificateData = file_get_contents($certificatePath); $cabundleData = trim(str_replace($certificateData, '', $fullchainData)); file_put_contents($cabundlePath, $cabundleData); } return $isCreated; } catch (Exception $e) { self::redirect_on_error($e); } } /* * Verifies if the SSL certificate is successfully installed on the domain or not. * * @return Bool True if the SSL certificate is installed successfully, false otherwise. * @since 1.0 * @static / public static function verifyssl($domain) { try { $connection = @fsockopen( 'ssl://' . $domain, 443, $errno, $errstr, 30 ); if ( $connection ) { // SSL is activated fclose( $connection ); return true; } else { // SSL is not activated or connection failed error_log( "SSL_ZEN (verifyssl): $errstr ($errno)" ); } } catch ( Exception $e ) { error_log( "SSL_ZEN (verifyssl): " . $e->getMessage() ); } return false; } /* * Redirect user to the page when error is raised in the Lets Encrypt API * * @param $e Exception\|null * @param $redirect boolean * * @since 1.1 * @static / private static function redirect_on_error($e = null, $redirect = true) { error_log( "SSL_ZEN: " . $e->getMessage() ); if ($redirect) { $currentSettingTab = get_option('ssl_zen_settings_stage', ''); if ($currentSettingTab == '') { $currentSettingTab = 'step1'; } wp_redirect(admin_url('admin.php?page=ssl_zen&tab=' . $currentSettingTab . '&info=api_error')); exit; } } /* * Check support of shell_exec function * * @return bool * @since 1.7 / public static function supportShellExec() { return function_exists('shell_exec'); } /* * Check support of cPanel command line api * * @return bool * @since 1.7 / public static function supportCPanelCommandLineApi() { return self::supportShellExec() && !empty(shell_exec('which uapi')); } /* * Install SSL certs via uapi command line * * @param $domain * @param $keysPath * * @return string\|null * @since 1.7 / public static function installSslViaUApiCommandline($domain, $keysPath) { // Define the SSL certificate and key files. $cert = urlencode(str_replace('\r\n', '\n', file_get_contents($keysPath . 'certificate.crt'))); $key = urlencode(str_replace('\r\n', '\n', file_get_contents($keysPath . 'private.pem'))); $caBundle = urlencode(str_replace('\r\n', '\n', file_get_contents($keysPath . 'cabundle.crt'))); return shell_exec("uapi SSL install_ssl domain=$domain cert=$cert key=$key cabundle=$caBundle"); } /* * Check domain with let's debug * * @param $baseDomain * @param string $method * * @since 2.0.4 */ public static function debugLetsEncrypt($baseDomain, $method = LEOrder::CHALLENGE_TYPE_HTTP) { if (SSL_ZEN_PLUGIN_ALLOW_DEV) { return false; } if (SSL_ZEN_DISABLE_LETS_DEBUG) { return false; } $apiResponse = wp_remote_post( 'https://letsdebug.net', [ 'timeout' => '15', 'sslverify' => false, 'headers' => array( 'content-type' => 'application/json' ), 'body' => json_encode( [ 'method' => $method, 'domain' => $baseDomain ] ) ] ); if (!empty($apiResponse) && !is_wp_error($apiResponse)) { $bodyObj = !empty($apiResponse['body']) ? json_decode($apiResponse['body']) : null; $id = !empty($bodyObj) && !empty($bodyObj->ID) ? (int)$bodyObj->ID : null; // Fetch the id and if (!empty($id)) { // Sleep in order to pass the processing status sleep(10); // Prepare get call $apiResponse = wp_remote_get( 'https://letsdebug.net/' . $baseDomain . '/' . $id, [ 'timeout' => '15', 'sslverify' => false, 'headers' => array( 'Accept' => 'application/json' ) ] ); if (!empty($apiResponse) && !is_wp_error($apiResponse)) { $bodyObj = !empty($apiResponse['body']) ? json_decode($apiResponse['body']) : null; if (!empty($bodyObj->result) && !empty($bodyObj->result->problems)) { $problems = $bodyObj->result->problems; $error = false; foreach ($problems as $problem) { if (in_array(strtolower($problem->severity), ["error", "fatal"])) { // So the domain has problem, then redirect with error $error = true; break; } } if ($error) { $currentSettingTab = get_option('ssl_zen_settings_stage', ''); if ($currentSettingTab == '') { $currentSettingTab = 'step1'; } wp_redirect(admin_url('admin.php?page=ssl_zen&tab=' . $currentSettingTab . '&info=lets_encrypt_error_' . strtolower($problem->name))); exit; } } } } } } } }

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