Add WordPress auto-update functionality (v0.6.0)

- Add UpdateController REST API endpoint for serving update info to licensed plugins
- Add PluginUpdateChecker singleton for client-side update checking
- Hook into WordPress native plugin update system (pre_set_site_transient_update_plugins, plugins_api)
- Add Auto-Updates settings subtab with enable/disable and check frequency options
- Add authentication headers for secure download requests
- Support configurable cache TTL for update checks (default 12 hours)
- Document /update-check endpoint in OpenAPI specification
- Update German translations

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
This commit is contained in:
2026-01-27 20:14:11 +01:00
parent f8f6434342
commit b670bacf27
9 changed files with 1194 additions and 9 deletions

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<?php
/**
* Update Controller
*
* REST API endpoint for plugin update checks
*
* @package Jeremias\WcLicensedProduct\Api
*/
declare(strict_types=1);
namespace Jeremias\WcLicensedProduct\Api;
use Jeremias\WcLicensedProduct\License\LicenseManager;
use Jeremias\WcLicensedProduct\Product\VersionManager;
use Jeremias\WcLicensedProduct\Product\ProductVersion;
use WP_REST_Request;
use WP_REST_Response;
use WP_REST_Server;
/**
* Handles REST API endpoint for plugin update checks
*
* This endpoint allows licensed plugins to check for updates from this WooCommerce store.
* It validates the license and returns WordPress-compatible update information.
*/
final class UpdateController
{
private const NAMESPACE = 'wc-licensed-product/v1';
/**
* Default rate limit: requests per window per IP
*/
private const DEFAULT_RATE_LIMIT = 30;
/**
* Default rate limit window in seconds
*/
private const DEFAULT_RATE_WINDOW = 60;
private LicenseManager $licenseManager;
private VersionManager $versionManager;
public function __construct(LicenseManager $licenseManager, VersionManager $versionManager)
{
$this->licenseManager = $licenseManager;
$this->versionManager = $versionManager;
$this->registerHooks();
}
/**
* Register WordPress hooks
*/
private function registerHooks(): void
{
add_action('rest_api_init', [$this, 'registerRoutes']);
}
/**
* Get the configured rate limit (requests per window)
*/
private function getRateLimit(): int
{
return defined('WC_LICENSE_RATE_LIMIT')
? (int) WC_LICENSE_RATE_LIMIT
: self::DEFAULT_RATE_LIMIT;
}
/**
* Get the configured rate limit window in seconds
*/
private function getRateWindow(): int
{
return defined('WC_LICENSE_RATE_WINDOW')
? (int) WC_LICENSE_RATE_WINDOW
: self::DEFAULT_RATE_WINDOW;
}
/**
* Check rate limit for current IP
*
* @return WP_REST_Response|null Returns error response if rate limited, null if OK
*/
private function checkRateLimit(): ?WP_REST_Response
{
$ip = $_SERVER['REMOTE_ADDR'] ?? '0.0.0.0';
$transientKey = 'wclp_update_rate_' . md5($ip);
$rateLimit = $this->getRateLimit();
$rateWindow = $this->getRateWindow();
$data = get_transient($transientKey);
if ($data === false) {
set_transient($transientKey, ['count' => 1, 'start' => time()], $rateWindow);
return null;
}
$count = (int) ($data['count'] ?? 0);
$start = (int) ($data['start'] ?? time());
if (time() - $start >= $rateWindow) {
set_transient($transientKey, ['count' => 1, 'start' => time()], $rateWindow);
return null;
}
if ($count >= $rateLimit) {
$retryAfter = $rateWindow - (time() - $start);
$response = new WP_REST_Response([
'success' => false,
'error' => 'rate_limit_exceeded',
'message' => __('Too many requests. Please try again later.', 'wc-licensed-product'),
'retry_after' => $retryAfter,
], 429);
$response->header('Retry-After', (string) $retryAfter);
return $response;
}
set_transient($transientKey, ['count' => $count + 1, 'start' => $start], $rateWindow);
return null;
}
/**
* Register REST API routes
*/
public function registerRoutes(): void
{
register_rest_route(self::NAMESPACE, '/update-check', [
'methods' => WP_REST_Server::CREATABLE,
'callback' => [$this, 'handleUpdateCheck'],
'permission_callback' => '__return_true',
'args' => [
'license_key' => [
'required' => true,
'type' => 'string',
'sanitize_callback' => 'sanitize_text_field',
'validate_callback' => function ($value): bool {
$len = strlen($value);
return !empty($value) && $len >= 8 && $len <= 64;
},
],
'domain' => [
'required' => true,
'type' => 'string',
'sanitize_callback' => 'sanitize_text_field',
'validate_callback' => function ($value): bool {
return !empty($value) && strlen($value) <= 255;
},
],
'plugin_slug' => [
'required' => false,
'type' => 'string',
'sanitize_callback' => 'sanitize_text_field',
],
'current_version' => [
'required' => false,
'type' => 'string',
'sanitize_callback' => 'sanitize_text_field',
],
],
]);
}
/**
* Handle update check request
*/
public function handleUpdateCheck(WP_REST_Request $request): WP_REST_Response
{
$rateLimitResponse = $this->checkRateLimit();
if ($rateLimitResponse !== null) {
return $rateLimitResponse;
}
$licenseKey = $request->get_param('license_key');
$domain = $request->get_param('domain');
$currentVersion = $request->get_param('current_version');
// Validate license
$validationResult = $this->licenseManager->validateLicense($licenseKey, $domain);
if (!$validationResult['valid']) {
return new WP_REST_Response([
'success' => false,
'update_available' => false,
'error' => $validationResult['error'] ?? 'license_invalid',
'message' => $validationResult['message'] ?? __('License validation failed.', 'wc-licensed-product'),
], $validationResult['error'] === 'license_not_found' ? 404 : 403);
}
// Get license to access product ID
$license = $this->licenseManager->getLicenseByKey($licenseKey);
if (!$license) {
return new WP_REST_Response([
'success' => false,
'update_available' => false,
'error' => 'license_not_found',
'message' => __('License not found.', 'wc-licensed-product'),
], 404);
}
$productId = $license->getProductId();
$product = wc_get_product($productId);
if (!$product) {
return new WP_REST_Response([
'success' => false,
'update_available' => false,
'error' => 'product_not_found',
'message' => __('Licensed product not found.', 'wc-licensed-product'),
], 404);
}
// Get latest version based on major version binding
$latestVersion = $this->getLatestVersionForLicense($license);
if (!$latestVersion) {
return new WP_REST_Response([
'success' => true,
'update_available' => false,
'version' => $currentVersion ?? '0.0.0',
'message' => __('No versions available for this product.', 'wc-licensed-product'),
]);
}
// Check if update is available
$updateAvailable = $currentVersion
? version_compare($latestVersion->getVersion(), $currentVersion, '>')
: true;
// Build response
$response = $this->buildUpdateResponse($product, $latestVersion, $license, $updateAvailable);
return new WP_REST_Response($response);
}
/**
* Get latest version for a license, respecting major version binding
*/
private function getLatestVersionForLicense($license): ?ProductVersion
{
$productId = $license->getProductId();
// Check if license is bound to a specific version
$versionId = $license->getVersionId();
if ($versionId) {
$boundVersion = $this->versionManager->getVersionById($versionId);
if ($boundVersion) {
// Get latest version for this major version
return $this->versionManager->getLatestVersionForMajor(
$productId,
$boundVersion->getMajorVersion()
);
}
}
// No version binding, return latest overall
return $this->versionManager->getLatestVersion($productId);
}
/**
* Build WordPress-compatible update response
*/
private function buildUpdateResponse($product, ProductVersion $version, $license, bool $updateAvailable): array
{
$productSlug = $product->get_slug();
// Generate secure download URL
$downloadUrl = $this->generateUpdateDownloadUrl($license->getId(), $version->getId());
$response = [
'success' => true,
'update_available' => $updateAvailable,
'version' => $version->getVersion(),
'slug' => $productSlug,
'plugin' => $productSlug . '/' . $productSlug . '.php',
'download_url' => $downloadUrl,
'package' => $downloadUrl,
'last_updated' => $version->getReleasedAt()->format('Y-m-d'),
'tested' => $this->getTestedWpVersion(),
'requires' => $this->getRequiredWpVersion(),
'requires_php' => $this->getRequiredPhpVersion(),
];
// Add changelog if available
if ($version->getReleaseNotes()) {
$response['changelog'] = $version->getReleaseNotes();
$response['sections'] = [
'description' => $product->get_short_description() ?: $product->get_description(),
'changelog' => $version->getReleaseNotes(),
];
}
// Add package hash for integrity verification
if ($version->getFileHash()) {
$response['package_hash'] = 'sha256:' . $version->getFileHash();
}
// Add product name and homepage
$response['name'] = $product->get_name();
$response['homepage'] = get_permalink($product->get_id());
// Add icons if product has featured image
$imageId = $product->get_image_id();
if ($imageId) {
$iconUrl = wp_get_attachment_image_url($imageId, 'thumbnail');
$iconUrl2x = wp_get_attachment_image_url($imageId, 'medium');
if ($iconUrl) {
$response['icons'] = [
'1x' => $iconUrl,
'2x' => $iconUrl2x ?: $iconUrl,
];
}
}
return $response;
}
/**
* Generate secure download URL for updates
*/
private function generateUpdateDownloadUrl(int $licenseId, int $versionId): string
{
$data = $licenseId . '-' . $versionId . '-' . wp_salt('auth');
$hash = substr(hash('sha256', $data), 0, 16);
$downloadKey = $licenseId . '-' . $versionId . '-' . $hash;
return home_url('license-download/' . $downloadKey);
}
/**
* Get tested WordPress version from plugin headers
*/
private function getTestedWpVersion(): string
{
return get_option('wc_licensed_product_tested_wp', '6.7');
}
/**
* Get required WordPress version from plugin headers
*/
private function getRequiredWpVersion(): string
{
return get_option('wc_licensed_product_requires_wp', '6.0');
}
/**
* Get required PHP version
*/
private function getRequiredPhpVersion(): string
{
return get_option('wc_licensed_product_requires_php', '8.3');
}
}