private static function urinorm($uri)
{
$uri_matches = array();
preg_match(self::URIPattern, $uri, $uri_matches);
if (count($uri_matches) < 9) {
for ($i = count($uri_matches); $i <= 9; $i++) {
$uri_matches[] = '';
}
}
$illegal_matches = array();
preg_match(self::URLIllegalCharRE, $uri, $illegal_matches);
if ($illegal_matches) {
return null;
}
$scheme = $uri_matches[2];
if ($scheme) {
$scheme = strtolower($scheme);
}
$scheme = $uri_matches[2];
if ($scheme === '') {
// No scheme specified
return null;
}
$scheme = strtolower($scheme);
if (!in_array($scheme, array('http', 'https'))) {
// Not an absolute HTTP or HTTPS URI
return null;
}
$authority = $uri_matches[4];
if ($authority === '') {
// Not an absolute URI
return null;
}
$authority_matches = array();
preg_match(self::AuthorityPattern, $authority, $authority_matches);
if (count($authority_matches) === 0) {
// URI does not have a valid authority
return null;
}
if (count($authority_matches) < 4) {
for ($i = count($authority_matches); $i <= 4; $i++) {
$authority_matches[] = '';
}
}
list($_whole, $userinfo, $host, $port) = $authority_matches;
if ($userinfo === null) {
$userinfo = '';
}
if (strpos($host, '%') !== -1) {
$host = strtolower($host);
$host = preg_replace_callback(self::EncodedPattern, function ($mo) {
return chr(intval($mo[1], 16));
}, $host);
// NO IDNA.
// $host = unicode($host, 'utf-8').encode('idna');
} else {
$host = strtolower($host);
}
if ($port) {
if ($port == ':' || $scheme == 'http' && $port == ':80' || $scheme == 'https' && $port == ':443') {
$port = '';
}
} else {
$port = '';
}
$authority = $userinfo . $host . $port;
$path = $uri_matches[5];
$path = preg_replace_callback(self::EncodedPattern, function ($mo) {
$_unreserved = OpenIdUriHelper::getUnreserved();
$i = intval($mo[1], 16);
if ($_unreserved[$i]) {
return chr($i);
} else {
return strtoupper($mo[0]);
}
return $mo[0];
}, $path);
$path = self::remove_dot_segments($path);
if (!$path) {
$path = '/';
}
$query = $uri_matches[6];
if ($query === null) {
$query = '';
}
$fragment = $uri_matches[8];
if ($fragment === null) {
$fragment = '';
}
return $scheme . '://' . $authority . $path . $query . $fragment;
}
