/** as per https://github.com/indieweb/php-mf2/issues/35 */
public function testResolvesProtocolRelativeUrlsCorrectly()
{
$expected = 'http://cdn.example.org/thing/asset.css';
$actual = Mf2\resolveUrl('http://example.com', '//cdn.example.org/thing/asset.css');
$this->assertEquals($expected, $actual);
$expected = 'https://cdn.example.org/thing/asset.css';
$actual = Mf2\resolveUrl('https://example.com', '//cdn.example.org/thing/asset.css');
$this->assertEquals($expected, $actual);
}
/**
* rel-me Document URL
*
* Given a URL, resolves any redirects and returns the resolved URL, whether or not
* the redirect chain is secure (doesn’t change protocol) and the redirect chain,
* for inspection.
*
* Example usage:
*
* list($profileUrl, $isSecure, $redirectChain) = IndieWeb\relMeDocumentUrl($me);
*
* $followOneRedirect defaults to IndieWeb\followOneRedirect but can be replaced for
* testing purposes.
*
* Returns [string URL, bool isSecure, array redirectChain]
* @return array
*/
function relMeDocumentUrl($url, $followOneRedirect = null)
{
if (!is_callable($followOneRedirect)) {
$followOneRedirect = __NAMESPACE__ . '\\followOneRedirect';
}
$previous = array();
$secure = true;
$is_https = false;
$currentUrl = $url;
while (true) {
// TODO: is resolving this URL correct behaviour here?
// should it be resolved just to the host?
$redirectedUrl = Mf2\resolveUrl($currentUrl, $followOneRedirect($currentUrl));
if ($redirectedUrl === null) {
break;
} elseif (in_array($redirectedUrl, $previous)) {
break;
} elseif ($is_https && parse_url($currentUrl, PHP_URL_SCHEME) !== parse_url($redirectedUrl, PHP_URL_SCHEME)) {
$secure = false;
$previous[] = $currentUrl = $redirectedUrl;
break;
} else {
if (parse_url($currentUrl, PHP_URL_SCHEME) == 'https') {
$is_https = true;
}
$currentUrl = $redirectedUrl;
$previous[] = $currentUrl;
}
}
return array($currentUrl, $secure, $previous);
}
