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<?php declare(strict_types=1); |
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/** |
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* @license http://opensource.org/licenses/mit-license.php MIT |
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* @link https://github.com/nicoSWD |
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* @author Nicolas Oelgart <[email protected]> |
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*/ |
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namespace nicoSWD\SecHeaderCheck\Domain\URL; |
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use nicoSWD\SecHeaderCheck\Domain\Header\HttpHeader; |
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final class URL |
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{ |
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private const SCHEME_HTTPS = 'https'; |
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private const SCHEME_HTTP = 'http'; |
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private const ALLOWED_SCHEMES = [ |
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self::SCHEME_HTTP, |
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self::SCHEME_HTTPS, |
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]; |
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private $url = ''; |
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private $components = []; |
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public function __construct(string $url) |
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{ |
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if (!$this->urlHasScheme($url)) { |
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$url = sprintf('http://%s', $url); |
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} |
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if (!$this->isValid($url)) { |
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throw new Exception\InvalidUrlException(); |
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} |
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$this->url = $url; |
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} |
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public function scheme(): string |
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{ |
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return $this->components['scheme']; |
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} |
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public function isHttps(): bool |
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{ |
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return $this->scheme() === self::SCHEME_HTTPS; |
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} |
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public function host(): string |
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{ |
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return $this->components['host']; |
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} |
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public function path(): string |
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{ |
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return $this->components['path'] ?? '/'; |
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} |
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public function query(): string |
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{ |
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return $this->components['query'] ?? ''; |
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} |
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public function port(): int |
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{ |
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if (empty($this->components['port'])) { |
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return $this->scheme() === self::SCHEME_HTTPS ? 443 : 80; |
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} |
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return (int) $this->components['port']; |
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} |
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public function redirectTo(HttpHeader $locationHeader): self |
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{ |
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$newLocation = $locationHeader->value(); |
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if (substr($newLocation, 0, 2) === '//') { |
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$newLocation = sprintf('%s:%s', $this->scheme(), $newLocation); |
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} elseif ($newLocation[0] === '/') { |
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$newLocation = sprintf('%s://%s:%d%s', $this->scheme(), $this->host(), $this->port(), $newLocation); |
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} elseif (!preg_match('~^https?://~', $newLocation)) { |
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$newLocation = $this->url . $newLocation; |
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} |
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return new self($newLocation); |
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} |
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private function isValid(string $url): bool |
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{ |
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if (!filter_var($url, FILTER_VALIDATE_URL)) { |
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return false; |
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} |
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$components = parse_url($url); |
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if (!isset($components['host'], $components['scheme']) || !$this->isAllowedScheme($components['scheme'])) { |
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return false; |
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} |
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$this->components = $components; |
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return true; |
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} |
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private function isAllowedScheme(string $scheme): bool |
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{ |
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return in_array($scheme, self::ALLOWED_SCHEMES, true); |
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} |
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private function urlHasScheme(string $url): bool |
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{ |
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return preg_match('~^[a-z][a-z\d\-\.]*://~i', $url) === 1; |
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} |
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} |
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nicoSWD /
headsec
