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<?php
/**
* @package Duplicator
* @copyright (c) 2022, Snap Creek LLC
*/
namespace Duplicator\Ajax;
use Plugin_Upgrader;
use Duplicator\Ajax\AjaxWrapper;
use Duplicator\Views\EducationElements;
use Exception;
use Duplicator\Libs\OneClickUpgrade\UpgraderSkin;
use DUP_Log;
use DUP_Settings;
use Duplicator\Core\Controllers\ControllersManager;
use Duplicator\Core\Notifications\Notice;
use Duplicator\Libs\Snap\SnapUtil;
class ServicesEducation extends AbstractAjaxService
{
const OPTION_KEY_ONE_CLICK_UPGRADE_OTH = 'duplicator_one_click_upgrade_oth';
const AUTH_TOKEN_KEY_OPTION_AUTO_ACTIVE = 'duplicator_pro_auth_token_auto_active';
const DUPLICATOR_STORE_URL = "https://duplicator.com";
const REMOTE_SUBSCRIBE_URL = 'https://duplicator.com/?lite_email_signup=1';
/**
* Init ajax calls
*
* @return void
*/
public function init()
{
$this->addAjaxCall('wp_ajax_duplicator_settings_callout_cta_dismiss', 'dismissCalloutCTA');
$this->addAjaxCall('wp_ajax_duplicator_packages_bottom_bar_dismiss', 'dismissBottomBar');
$this->addAjaxCall('wp_ajax_duplicator_email_subscribe', 'setEmailSubscribed');
$this->addAjaxCall('wp_ajax_duplicator_generate_connect_oth', 'generateConnectOTH');
$this->addAjaxCall('wp_ajax_nopriv_duplicator_lite_run_one_click_upgrade', 'oneClickUpgrade');
$this->addAjaxCall('wp_ajax_duplicator_lite_run_one_click_upgrade', 'oneClickUpgrade');
$this->addAjaxCall('wp_ajax_duplicator_enable_usage_stats', 'enableUsageStats');
}
/**
* Set email subscribed
*
* @return bool
*/
public static function setEmailSubscribedCallback()
{
if (EducationElements::userIsSubscribed()) {
return true;
}
$email = filter_input(INPUT_POST, 'email', FILTER_VALIDATE_EMAIL, FILTER_NULL_ON_FAILURE);
if (is_null($email)) {
throw new \Exception('Invalid email');
}
$response = wp_remote_post(self::REMOTE_SUBSCRIBE_URL, array(
'method' => 'POST',
'timeout' => 45,
'body' => array('email' => $email)
));
if (is_wp_error($response) || 200 !== wp_remote_retrieve_response_code($response)) {
$error_msg = $response->get_error_code() . ': ' . $response->get_error_message();
SnapUtil::errorLog($error_msg);
throw new \Exception($error_msg);
}
return (update_user_meta(get_current_user_id(), EducationElements::DUP_EMAIL_SUBSCRIBED_OPT_KEY, true) !== false);
}
/**
* Set recovery action
*
* @return void
*/
public function setEmailSubscribed()
{
AjaxWrapper::json(
array(__CLASS__, 'setEmailSubscribedCallback'),
'duplicator_email_subscribe',
$_POST['nonce'],
'export'
);
}
/**
* Set dismiss callout CTA callback
*
* @return bool
*/
public static function dismissCalloutCTACallback()
{
return (update_user_meta(get_current_user_id(), EducationElements::DUP_SETTINGS_FOOTER_CALLOUT_DISMISSED, true) !== false);
}
/**
* Dismiss callout CTA
*
* @return void
*/
public function dismissCalloutCTA()
{
AjaxWrapper::json(
array(__CLASS__, 'dismissCalloutCTACallback'),
'duplicator_settings_callout_cta_dismiss',
$_POST['nonce'],
'export'
);
}
/**
* Dismiss bottom bar callback
*
* @return bool
*/
public static function dismissBottomBarCallback()
{
return (update_user_meta(get_current_user_id(), EducationElements::DUP_PACKAGES_BOTTOM_BAR_DISMISSED, true) !== false);
}
/**
* Dismiss bottom bar
*
* @return void
*/
public function dismissBottomBar()
{
AjaxWrapper::json(
array(__CLASS__, 'dismissBottomBarCallback'),
'duplicator_packages_bottom_bar_dismiss',
$_POST['nonce'],
'export'
);
}
/**
* Generate OTH for connect flow
*
* @return void
*/
public function generateConnectOTH()
{
AjaxWrapper::json(
array(__CLASS__, 'generateConnectOTHCallback'),
'duplicator_generate_connect_oth',
SnapUtil::sanitizeTextInput(INPUT_POST, 'nonce'),
'export'
);
}
/**
* Generate OTH for connect flow callback
*
* @return array
* @throws Exception
*/
public static function generateConnectOTHCallback()
{
$oth = wp_generate_password(30, false, false);
$hashed_oth = self::hashOth($oth);
// Save HASHED OTH with TTL for security
$oth_data = array(
'token' => $hashed_oth, // Store hashed OTH for decryption
'created_at' => time(),
'expires_at' => time() + (10 * MINUTE_IN_SECONDS) // 10 minute expiration
);
delete_option(self::OPTION_KEY_ONE_CLICK_UPGRADE_OTH);
$ok = update_option(self::OPTION_KEY_ONE_CLICK_UPGRADE_OTH, $oth_data);
if (!$ok) {
throw new Exception("Problem saving security token.");
}
return array(
'success' => true,
'oth' => $hashed_oth,
'php_version' => phpversion(),
'wp_version' => get_bloginfo('version'),
'redirect_url' => admin_url('admin-ajax.php?action=duplicator_lite_run_one_click_upgrade')
);
}
/**
* Returh hashed OTH
*
* @param string $oth OTH
*
* @return string Hashed OTH
*/
protected static function hashOth($oth)
{
return hash_hmac('sha512', $oth, wp_salt());
}
/**
* Decrypt data using OTH-based key.
*
* @param string $encryptedData Base64 encoded encrypted data
* @param string $oth The OTH token
*
* @return string|false Decrypted data or false on failure
*/
protected static function decryptData($encryptedData, $oth)
{
try {
$encryption_key = substr(hash('sha256', $oth), 0, 32); // 32-byte key from OTH
$iv = substr($oth, 0, 16); // 16-byte IV from OTH
$encrypted = base64_decode($encryptedData);
return openssl_decrypt($encrypted, 'AES-256-CBC', $encryption_key, 0, $iv);
} catch (Exception $e) {
DUP_Log::trace("ERROR: Decryption failed: " . $e->getMessage());
return false;
}
}
/**
* Decrypt and parse encrypted package from service.
*
* @param string $encryptedPackage Base64 encoded encrypted package
* @param string $oth The OTH token
*
* @return array|false Parsed package data or false on failure
*/
protected static function decryptPackage($encryptedPackage, $oth)
{
$decrypted = self::decryptData($encryptedPackage, $oth);
if ($decrypted === false) {
return false;
}
$package = json_decode($decrypted, true);
if (json_last_error() !== JSON_ERROR_NONE) {
DUP_Log::trace("ERROR: Invalid JSON in decrypted package");
return false;
}
return $package;
}
/**
* Enable usage stats
*
* @return void
*/
public function enableUsageStats()
{
AjaxWrapper::json(
array(__CLASS__, 'enableUsageStatsCallback'),
'duplicator_enable_usage_stats',
SnapUtil::sanitizeTextInput(INPUT_POST, 'nonce'),
'manage_options'
);
}
/**
* Enable usage stats callback
*
* @return void
*/
public static function enableUsageStatsCallback()
{
$result = true;
if (DUP_Settings::Get('usage_tracking') !== true) {
DUP_Settings::setUsageTracking(true);
$result = DUP_Settings::Save();
}
return $result && self::setEmailSubscribedCallback();
}
/**
* Accepts encrypted package from remote endpoint, after validating the OTH.
*
* @return void
*/
public function oneClickUpgrade()
{
try {
// Get encrypted package from service
$encryptedPackage = sanitize_text_field($_REQUEST["package"] ?? '');
if (empty($encryptedPackage)) {
DUP_Log::trace("ERROR: No encrypted package received from service.");
throw new Exception("No encrypted package received from service");
}
// Get OTH data for validation
$oth_data = get_option(self::OPTION_KEY_ONE_CLICK_UPGRADE_OTH);
if (empty($oth_data) || !is_array($oth_data)) {
DUP_Log::trace("ERROR: Invalid OTH data structure.");
throw new Exception("Invalid security token");
}
// Check TTL expiration
if (time() > $oth_data['expires_at']) {
DUP_Log::trace("ERROR: OTH token expired.");
delete_option(self::OPTION_KEY_ONE_CLICK_UPGRADE_OTH);
throw new Exception("Security token expired");
}
// Decrypt package using OTH
$package = self::decryptPackage($encryptedPackage, $oth_data['token']);
if ($package === false) {
DUP_Log::trace("ERROR: Failed to decrypt package from service.");
throw new Exception("Invalid encrypted data");
}
// Extract data from decrypted package
$download_url = $package['download_url'] ?? '';
$auth_token = $package['auth_token'] ?? '';
if (empty($download_url)) {
DUP_Log::trace("ERROR: No download URL in decrypted package.");
throw new Exception("No download URL provided");
}
// Delete OTH so it cannot be replayed (single-use)
delete_option(self::OPTION_KEY_ONE_CLICK_UPGRADE_OTH);
// Save authentication token for Pro to use
if (!empty($auth_token)) {
delete_option(self::AUTH_TOKEN_KEY_OPTION_AUTO_ACTIVE);
update_option(self::AUTH_TOKEN_KEY_OPTION_AUTO_ACTIVE, $auth_token);
DUP_Log::trace("Authentication token saved for Pro activation.");
}
// Validate download origin
$host = wp_parse_url($download_url, PHP_URL_HOST);
if (!preg_match('/(^|\\.)duplicator\\.com$/i', $host)) {
DUP_Log::trace("ERROR: Invalid download origin: " . $host);
throw new Exception("Invalid download origin");
}
// Install Pro if not already installed
if (!is_dir(WP_PLUGIN_DIR . "/duplicator-pro")) {
DUP_Log::trace("Installing Pro using service-provided URL: " . $download_url);
// Request filesystem credentials
$url = esc_url_raw(add_query_arg(array('page' => 'duplicator-settings'), admin_url('admin.php')));
$creds = request_filesystem_credentials($url, '', false, false, null);
if (false === $creds || ! \WP_Filesystem($creds)) {
wp_send_json_error(array('message' => 'File system permissions error. Please check permissions and try again.'));
}
// Install the plugin
require_once ABSPATH . 'wp-admin/includes/class-wp-upgrader.php';
remove_action('upgrader_process_complete', array('Language_Pack_Upgrader', 'async_upgrade'), 20);
$installer = new Plugin_Upgrader(new UpgraderSkin());
$result = $installer->install($download_url);
if (is_wp_error($result)) {
DUP_Log::trace("ERROR: Plugin installation failed: " . $result->get_error_message());
throw new Exception('Plugin installation failed: ' . $result->get_error_message());
}
wp_cache_flush();
$plugin_basename = $installer->plugin_info();
if ($plugin_basename) {
$upgradeDir = dirname($plugin_basename);
if ($upgradeDir != "duplicator-pro" && !rename(WP_PLUGIN_DIR . "/" . $upgradeDir, WP_PLUGIN_DIR . "/duplicator-pro")) {
throw new Exception('Failed renaming plugin directory');
}
} else {
throw new Exception('Installation of upgrade version failed');
}
}
$newFolder = WP_PLUGIN_DIR . "/duplicator-pro";
if (!is_dir($newFolder)) {
DUP_Log::trace("ERROR: Duplicator Pro folder not found after installation");
throw new Exception('Pro plugin installation failed - folder not created');
}
// Deactivate Lite FIRST (critical for avoiding conflicts)
deactivate_plugins(DUPLICATOR_PLUGIN_PATH . "/duplicator.php");
// Create activation URL for Pro
$plugin = "duplicator-pro/duplicator-pro.php";
$pluginsAdminUrl = is_multisite() ? network_admin_url('plugins.php') : admin_url('plugins.php');
$activateProUrl = esc_url_raw(
add_query_arg(
array(
'action' => 'activate',
'plugin' => $plugin,
'_wpnonce' => wp_create_nonce("activate-plugin_$plugin")
),
$pluginsAdminUrl
)
);
// Redirect to WordPress activation URL
DUP_Log::trace("Pro installation successful. Redirecting to activation URL: " . $activateProUrl);
wp_safe_redirect($activateProUrl);
exit;
} catch (Exception $e) {
DUP_Log::trace("ERROR in oneClickUpgrade: " . $e->getMessage());
// Add error notice and redirect to settings page
Notice::error(
sprintf(__('Upgrade installation failed: %s. Please try again or install manually.', 'duplicator'), $e->getMessage()),
'one_click_upgrade_failed'
);
$settingsUrl = ControllersManager::getMenuLink(
ControllersManager::SETTINGS_SUBMENU_SLUG,
'general'
);
wp_safe_redirect($settingsUrl);
exit;
}
}
}