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<?php |
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namespace MadWizard\WebAuthn\Web; |
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use MadWizard\WebAuthn\Exception\ParseException; |
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use MadWizard\WebAuthn\Format\SerializableTrait; |
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use Serializable; |
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use function mb_strtolower; |
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final class Origin implements Serializable |
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{ |
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use SerializableTrait; |
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/** |
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* @var string |
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*/ |
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private $scheme; |
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/** |
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* @var string |
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*/ |
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private $host; |
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/** |
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* @var int |
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*/ |
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private $port; |
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private const PARSE_REGEXP = '#^(?<scheme>[A-Za-z][-._~0-9A-Za-z]*)://(?<host>([^:]+))(:(?<port>[0-9]{1,5}))?$#'; |
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private function __construct(string $scheme, string $host, int $port) |
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{ |
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$this->scheme = $scheme; |
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$this->host = $host; |
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$this->port = $port; |
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} |
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// TODO: stricter parsing/canonalization according to spec |
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public static function parse(string $origin): Origin |
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{ |
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[$scheme, $host, $port] = self::parseElements($origin); |
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if (!self::isValidHost($host)) { |
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throw new ParseException(sprintf("Invalid host name '%s'.", $host)); |
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} |
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if ($port === null) { |
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$port = self::defaultPort($scheme); |
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} |
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if ($port === 0 || $port >= 2 ** 16) { |
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throw new ParseException(sprintf('Invalid port number %d.', $port)); |
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} |
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return new Origin($scheme, $host, $port); |
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} |
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private static function defaultPort(string $scheme): int |
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{ |
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if ($scheme === 'https') { |
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return 443; |
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} |
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if ($scheme === 'http') { |
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return 80; |
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} |
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throw new ParseException(sprintf("No default port number for scheme '%s'.", $scheme)); |
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} |
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private static function isValidHost(string $host): bool |
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{ |
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if ($host === '') { |
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return false; |
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} |
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if (filter_var($host, FILTER_VALIDATE_IP, FILTER_FLAG_IPV4)) { |
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return true; |
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} |
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// TODO ipv6 - needs adjustment in regexp |
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// if ($host[0] === '[' && $host[-1] === ']' && filter_var(substr($host, 1, -1), FILTER_VALIDATE_IP, FILTER_FLAG_IPV6)) { |
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// return true; |
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// } |
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if (filter_var($host, FILTER_VALIDATE_DOMAIN, FILTER_FLAG_HOSTNAME)) { |
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return true; |
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} |
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return false; |
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} |
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private static function parseElements(string $origin): array |
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{ |
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if (!preg_match(self::PARSE_REGEXP, $origin, $matches)) { |
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throw new ParseException(sprintf("Could not parse origin '%s'.", $origin)); |
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} |
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$scheme = strtolower($matches['scheme']); |
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$host = mb_strtolower($matches['host'], 'UTF-8'); |
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$port = isset($matches['port']) ? (int) $matches['port'] : null; |
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return [$scheme, $host, $port]; |
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} |
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public function equals(Origin $origin): bool |
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{ |
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return $this->host === $origin->host && |
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$this->port === $origin->port && |
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$this->scheme === $origin->scheme; |
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} |
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public function toString(): string |
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{ |
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if ($this->usesDefaultPort()) { |
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return sprintf('%s://%s', $this->scheme, $this->host); |
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} |
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return sprintf('%s://%s:%d', $this->scheme, $this->host, $this->port); |
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} |
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private function usesDefaultPort(): bool |
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{ |
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if ($this->scheme === 'http' && $this->port === 80) { |
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return true; |
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} |
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if ($this->scheme === 'https' && $this->port === 443) { |
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return true; |
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} |
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return false; |
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} |
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public function getHost(): string |
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{ |
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return $this->host; |
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} |
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public function getScheme(): string |
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{ |
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return $this->scheme; |
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} |
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public function getPort(): int |
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{ |
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return $this->port; |
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} |
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public function __serialize(): array |
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{ |
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return [ |
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'scheme' => $this->scheme, |
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'host' => $this->host, |
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'port' => $this->port, |
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]; |
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} |
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public function __unserialize(array $data): void |
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{ |
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$this->scheme = $data['scheme']; |
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$this->host = $data['host']; |
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$this->port = $data['port']; |
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} |
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} |
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madwizard-org /
webauthn-server
