/**
* Filter a URL
*
* Prefix the URL with "http://" if it has no scheme, then check the URL
* for validity. You can specify what parts of the URL are allowed.
*
* @param string $uriString
* @param string[] $allowedParts Array of allowed URL parts (optional)
*
* @throws InvalidUrlException If URL is invalid, the scheme is not http or
* contains parts that are not expected.
*
* @return UriInterface Filtered URI (with default scheme if there was no scheme)
*/
private function filterUri($uriString, array $allowedParts = [])
{
// Creating a PSR-7 URI without scheme (with parse_url) results in the
// original hostname to be seen as path. So first add a scheme if none
// is given.
if (false === strpos($uriString, '://')) {
$uriString = sprintf('%s://%s', 'http', $uriString);
}
try {
$uri = UriFactoryDiscovery::find()->createUri($uriString);
} catch (\InvalidArgumentException $e) {
throw InvalidUrlException::invalidUrl($uriString);
}
if (!$uri->getScheme()) {
throw InvalidUrlException::invalidUrl($uriString, 'empty scheme');
}
if (count($allowedParts) > 0) {
$parts = parse_url((string) $uri);
$diff = array_diff(array_keys($parts), $allowedParts);
if (count($diff) > 0) {
throw InvalidUrlException::invalidUrlParts($uriString, $allowedParts);
}
}
return $uri;
}
/**
* Filter a URL
*
* Prefix the URL with "http://" if it has no scheme, then check the URL
* for validity. You can specify what parts of the URL are allowed.
*
* @param string $url
* @param string[] $allowedParts Array of allowed URL parts (optional)
*
* @throws InvalidUrlException If URL is invalid, the scheme is not http or
* contains parts that are not expected.
*
* @return string The URL (with default scheme if there was no scheme)
*/
protected function filterUrl($url, array $allowedParts = array())
{
// parse_url doesn’t work properly when no scheme is supplied, so
// prefix URL with HTTP scheme if necessary.
if (false === strpos($url, '://')) {
$url = sprintf('%s://%s', $this->getDefaultScheme(), $url);
}
if (!$parts = parse_url($url)) {
throw InvalidUrlException::invalidUrl($url);
}
if (empty($parts['scheme'])) {
throw InvalidUrlException::invalidUrl($url, 'empty scheme');
}
if (!in_array(strtolower($parts['scheme']), $this->getAllowedSchemes())) {
throw InvalidUrlException::invalidUrlScheme($url, $parts['scheme'], $this->getAllowedSchemes());
}
if (count($allowedParts) > 0) {
$diff = array_diff(array_keys($parts), $allowedParts);
if (count($diff) > 0) {
throw InvalidUrlException::invalidUrlParts($url, $allowedParts);
}
}
return $url;
}