function Auth_OpenID_urinorm($uri)
{
global $__uri_pattern, $__authority_pattern, $__pct_encoded_pattern;
$uri_matches = array();
preg_match($__uri_pattern, $uri, $uri_matches);
if (count($uri_matches) < 9) {
for ($i = count($uri_matches); $i <= 9; $i++) {
$uri_matches[] = '';
}
}
$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;
}
$authority_matches = array();
preg_match($__authority_pattern, $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);
$host = preg_replace_callback($__pct_encoded_pattern, '_pct_encoded_replace', $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];
$path = preg_replace_callback($__pct_encoded_pattern, '_pct_encoded_replace_unreserved', $path);
$path = remove_dot_segments($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 . $fragment;
}
function normalize_uri($uri)
{
// Make sure file URIs have either 0 or 3 slashes after the colon
if (strtolower(substr($uri, 0, 6)) == 'file:/') {
$uri = substr($uri, 0, 5) . '///' . substr($uri, 6);
}
$u = parse_uri($uri);
// Convert the scheme name to lowercase
if (isset($u['scheme'])) {
$u['scheme'] = strtolower($u['scheme']);
}
// Convert the host part to lowercase
if (isset($u['host'])) {
$u['host'] = strtolower($u['host']);
}
// Remove multiple slashes (it's technically invalid URI syntax anyway)
$u['path'] = remove_multiple_slashes($u['path']);
// 6.2.2.3. Path Segment Normalization (of absolute paths)
$u['path'] = remove_dot_segments($u['path']);
// 6.2.3. Scheme-Based Normalization
if (isset($u['scheme'])) {
if ($u['scheme'] == 'http') {
if (empty($u['port']) or $u['port'] == 80) {
unset($u['port']);
}
if (empty($u['path'])) {
$u['path'] = '/';
}
} elseif ($u['scheme'] == 'https') {
if (empty($u['port']) or $u['port'] == 443) {
unset($u['port']);
}
if (empty($u['path'])) {
$u['path'] = '/';
}
} elseif ($u['scheme'] == 'ftp') {
if (empty($u['port']) or $u['port'] == 21) {
unset($u['port']);
}
if (empty($u['path'])) {
$u['path'] = '/';
}
}
}
return unparse_uri($u);
}
