- static $bad = array('query', 'user', 'password', 'port', 'fragment');
-
- $parts = parse_url($openid);
-
- # If any of these parts exist, this will not work
-
- foreach ($bad as $badpart) {
- if (array_key_exists($badpart, $parts)) {
- return null;
- }
- }
-
- # We just have host and/or path
-
- # If it's just a host...
- if (array_key_exists('host', $parts) &&
- (!array_key_exists('path', $parts) || strcmp($parts['path'], '/') == 0))
- {
- $hostparts = explode('.', $parts['host']);
-
- # Try to catch common idiom of nickname.service.tld
-
- if ((count($hostparts) > 2) &&
- (strlen($hostparts[count($hostparts) - 2]) > 3) && # try to skip .co.uk, .com.au
- (strcmp($hostparts[0], 'www') != 0))
- {
- return $this->nicknamize($hostparts[0]);
- } else {
- # Do the whole hostname
- return $this->nicknamize($parts['host']);
- }
- } else {
- if (array_key_exists('path', $parts)) {
- # Strip starting, ending slashes
- $path = preg_replace('@/$@', '', $parts['path']);
- $path = preg_replace('@^/@', '', $path);
- if (strpos($path, '/') === false) {
- return $this->nicknamize($path);
- }
- }
- }
-
- return null;