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<?php |
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namespace Lifeboat\Utils; |
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use Lifeboat\Exceptions\InvalidArgumentException; |
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/** |
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* Class URL |
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* @package Lifeboat\Utils |
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*/ |
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class URL { |
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/** |
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* @param string $key |
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* @param string $value |
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* @param string $url |
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* @return string |
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* @throws InvalidArgumentException If URL is malformed |
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*/ |
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public static function setGetVar(string $key, string $value, string $url): string |
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{ |
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if (!self::is_absolute_url($url)) { |
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$url = 'http://dummy.com/' . ltrim($url, '/'); |
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} |
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// try to parse uri |
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$parts = parse_url($url); |
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if (empty($parts)) { |
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throw new InvalidArgumentException("Can't parse URL: " . $url); |
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} |
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// Parse params and add new variable |
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$params = []; |
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if (array_key_exists('query', $parts)) { |
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parse_str($parts['query'], $params); |
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} |
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$params[$key] = $value; |
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// Generate URI segments and formatting |
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$scheme = (array_key_exists('scheme', $parts)) ? $parts['scheme'] : 'http'; |
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$user = (array_key_exists('user', $parts)) ? $parts['user'] : ''; |
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$port = (array_key_exists('port', $parts) && $parts['port']) ? ':' . $parts['port'] : ''; |
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if ($user != '') { |
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// format in either user:[email protected] or [email protected] |
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$user .= (array_key_exists('pass', $parts) && $parts['pass']) ? ':' . $parts['pass'] . '@' : ''; |
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} |
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// handle URL params which are existing / new |
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$params = ($params) ? '?' . http_build_query($params) : ''; |
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// Recompile URI segments |
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$newUri = $scheme . '://' . $user . $parts['host'] . $port . ($parts['path'] ?? '') . $params; |
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return str_replace('http://dummy.com', '', $newUri); |
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} |
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/** |
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* @param string $url |
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* @return bool |
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*/ |
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public static function is_absolute_url(string $url): bool |
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{ |
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// Strip off the query and fragment parts of the URL before checking |
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if (($queryPosition = strpos($url, '?')) !== false) { |
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$url = substr($url, 0, $queryPosition - 1); |
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} |
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if (($hashPosition = strpos($url, '#')) !== false) { |
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$url = substr($url, 0, $hashPosition - 1); |
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} |
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$colonPosition = strpos($url, ':'); |
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$slashPosition = strpos($url, '/'); |
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return ( |
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// Base check for existence of a host on a compliant URL |
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parse_url($url, PHP_URL_HOST) |
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// Check for more than one leading slash without a protocol. |
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// While not a RFC compliant absolute URL, it is completed to a valid URL by some browsers, |
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// and hence a potential security risk. Single leading slashes are not an issue though. |
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|| preg_match('%^\s*/{2,}%', $url) |
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|| ( |
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// If a colon is found, check if it's part of a valid scheme definition |
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// (meaning its not preceded by a slash). |
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$colonPosition !== false |
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&& ($slashPosition === false || $colonPosition < $slashPosition) |
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) |
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); |
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} |
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} |
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lifeboat-app /
php-sdk
