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<?php |
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|
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namespace FluentCart\Framework\Http; |
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|
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use InvalidArgumentException; |
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use FluentCart\Framework\Foundation\App; |
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use FluentCart\Framework\Support\DateTime; |
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|
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class UrlGenerator |
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{ |
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/** |
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* The application instance. |
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* |
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* @var \FluentCart\Framework\Foundation\App|null |
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*/ |
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protected $app = null; |
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|
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|
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/** |
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* The encrypter instance. |
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* @var \FluentCart\Framework\Encryption\Encrypter|null |
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*/ |
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protected $encrypter = null; |
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|
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/** |
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* Create a new URL Generator instance. |
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* |
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* @param \FluentCart\Framework\Foundation\App|null $app |
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* @param \FluentCart\Framework\Encryption\Encrypter|null $encrypter |
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*/ |
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public function __construct($app = null, $encrypter = null) |
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{ |
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$this->app = $app ?: App::getInstance(); |
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$this->encrypter = $encrypter; |
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} |
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|
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/** |
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* Sign a URL |
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* |
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* @param string $url |
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* @param array $params |
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* @return string |
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*/ |
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public function sign($url, $params = []) |
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{ |
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$encrypter = $this->resolveEncrypter(); |
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|
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$url = $this->normalizeUrl($url); |
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|
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[$baseUrl, $query] = $this->extractUrlParts($url); |
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|
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$params = $this->validateExpiryTime(array_merge($query, $params)); |
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|
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$payload = $encrypter->encrypt(http_build_query($params)); |
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|
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$signature = hash_hmac('sha256', $payload, $encrypter->getKey()); |
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|
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return "{$baseUrl}?_data={$payload}&_signature={$signature}"; |
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} |
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|
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/** |
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* Normalize URL — handle relative routes, slugs, and REST routes. |
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* |
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* @param string $url |
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* @return string |
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*/ |
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protected function normalizeUrl($url) |
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{ |
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if (preg_match('#^(http|https)://#', $url)) { |
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return $url; |
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} |
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|
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$config = App::config(); |
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$slug = trim($config->get('app.slug'), '/'); |
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$version = trim($config->get('app.rest_version'), '/'); |
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$relative = ltrim($url, '/'); |
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|
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$base = rest_url(); |
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|
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if (str_contains($base, 'index.php?rest_route=')) { |
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$base = site_url('/wp-json/'); |
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} |
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|
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return rtrim($base, '/') . '/' . $slug . '/' . $version . '/' . $relative; |
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} |
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|
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/** |
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* Extract base URL and query array from a full URL. |
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* |
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* @param string $url |
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* @return array |
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*/ |
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protected function extractUrlParts($url) |
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{ |
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$parts = parse_url($url); |
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|
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$base = $parts['scheme'] . '://' . $parts['host'] . ($parts['path'] ?? ''); |
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parse_str($parts['query'] ?? '', $query); |
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|
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return [$base, $query]; |
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} |
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|
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/** |
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* Normalize the expiry time. |
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* |
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* @param array $params |
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* @return array |
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* @throws InvalidArgumentException |
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*/ |
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public function validateExpiryTime(array $params): array |
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{ |
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if (!isset($params['expires_at'])) { |
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return $params; // Nothing to validate |
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} |
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|
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$expiresAt = $params['expires_at']; |
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|
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// Convert string date/time to timestamp |
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if (is_string($expiresAt)) { |
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$expiresAt = strtotime($expiresAt); |
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if ($expiresAt === false) { |
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throw new InvalidArgumentException( |
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'The expiry time string is invalid.' |
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); |
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} |
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|
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// Convert DateTime object to timestamp |
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} elseif ($expiresAt instanceof DateTime) { |
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$expiresAt = $expiresAt->getTimestamp(); |
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|
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// Numeric values are treated as absolute timestamps |
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} elseif (is_numeric($expiresAt)) { |
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$expiresAt = (int) $expiresAt; |
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|
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// Anything else is invalid |
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} else { |
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throw new InvalidArgumentException( |
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'The expiry time must be a string, DateTime, or numeric timestamp.' |
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); |
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} |
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|
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// Check if the expiry time is in the past |
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if ($expiresAt <= time()) { |
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throw new InvalidArgumentException('The expiry time has already passed.'); |
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} |
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|
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$params['expires_at'] = $expiresAt; |
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|
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return $params; |
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} |
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|
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/** |
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* Validate a URL |
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* |
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* @param string $url |
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* @return mixed (false or array) |
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*/ |
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public function validate($url) |
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{ |
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if (!$query = $this->parseUrlAndGetQuery($url)) { |
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return false; |
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} |
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|
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if (!isset($query['_data']) || !isset($query['_signature'])) { |
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return false; |
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} |
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|
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return $this->verifySignature($query['_data'], $query['_signature']); |
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} |
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|
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/** |
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* Parse query string from the url. |
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* |
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* @param string $url |
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* @return mixed (bool or array) |
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*/ |
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public function parseUrlAndGetQuery($url) |
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{ |
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$parts = parse_url($url); |
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|
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if (!isset($parts['query'])) { |
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return false; |
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} |
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|
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parse_str($parts['query'], $query); |
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|
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return $query; |
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} |
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|
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/** |
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* Verify the signature. |
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* |
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* @param array $data |
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* @param string $signature |
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* @return mixed (bool or array) |
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*/ |
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public function verifySignature($data, $signature) |
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{ |
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$encrypter = $this->resolveEncrypter(); |
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|
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$expected = hash_hmac('sha256', $data, $encrypter->getKey()); |
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|
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if (!hash_equals($expected, $signature)) return false; |
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parse_str($encrypter->decrypt($data), $params); |
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$expiresAt = $params['expires_at'] ?? null; |
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if (is_numeric($expiresAt) && time() > (int) $expiresAt) { |
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return false; |
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} |
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|
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return empty($params) ? true : $params; |
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} |
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|
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/** |
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* Generate a full REST URL from a named route. |
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* |
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* @param string $nameOrPath The name of the route or path. |
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* @param array $params Optional parameters to fill in the placeholders. |
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* @param array $query Optional query parameters to append to the URL. |
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* @return string|null The full REST URL or null if the route doesn't exist. |
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*/ |
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public function route($nameOrPath, $params = [], $query = []) |
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{ |
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// @phpstan-ignore-next-line |
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$route = $this->app->router->getByName($nameOrPath); |
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|
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if (!$route) { |
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if (!str_contains($nameOrPath, '/')) { |
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return; |
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} |
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$path = '/' . trim($nameOrPath, '/'); |
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} else { |
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$path = $this->buildPath($route->uri(), $params); |
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} |
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|
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$fullUrl = $this->buildFullUrl($path); |
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return $this->appendQueryString($fullUrl, $query); |
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} |
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|
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/** |
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* Resolve the encrypter. |
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* |
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* @return \FluentCart\Framework\Encryption\Encrypter |
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*/ |
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protected function resolveEncrypter() |
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{ |
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if (!$this->encrypter) { |
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$this->encrypter = App::make('encrypter'); |
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} |
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|
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return $this->encrypter; |
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} |
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|
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/** |
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* Build the full URL including base REST path, |
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* namespace, version, and route path. |
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* |
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* @param string $path |
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* @return string |
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*/ |
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protected function buildFullUrl($path) |
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{ |
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$restUrl = $this->buildRestBaseUrl(); |
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|
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$namespaceSegment = $this->buildNamespaceSegment(); |
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|
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return $restUrl . $namespaceSegment . $path; |
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} |
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|
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/** |
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* Get the base REST URL (e.g., https://wpfluent.org/wp-json). |
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* |
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* @return string |
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*/ |
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protected function buildRestBaseUrl() |
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{ |
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return rtrim(site_url('/wp-json'), '/'); |
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} |
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|
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/** |
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* Build the namespace and version segment of the REST URL. |
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* |
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* @return string |
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*/ |
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protected function buildNamespaceSegment() |
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{ |
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// @phpstan-ignore-next-line |
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$ns = trim($this->app->config->get('app.rest_namespace'), '/'); |
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|
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// @phpstan-ignore-next-line |
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$ver = trim($this->app->config->get('app.rest_version'), '/'); |
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|
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return "/{$ns}/{$ver}"; |
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} |
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|
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/** |
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* Replace route placeholders in the URI with the provided parameters. |
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* |
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* @param string $template |
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* @param array $params |
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* @return string |
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*/ |
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protected function buildPath($template, &$params) |
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{ |
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$replaced = preg_replace_callback( |
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'/\{([^}]+)\??\}/', |
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function ($m) use (&$params) { |
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$key = rtrim($m[1], '?'); |
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return isset($params[$key]) ? $params[$key] : ''; |
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}, |
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$template |
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); |
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|
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return '/' . trim($replaced, '/'); |
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} |
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|
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/** |
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* Append query parameters to a URL. |
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* |
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* @param string $url |
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* @param array $query |
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* @return string |
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*/ |
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protected function appendQueryString($url, $query) |
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{ |
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if (empty($query)) { |
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return $url; |
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} |
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|
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return $url . '?' . http_build_query($query); |
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} |
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} |
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|
