// In php 5 parse_url may fail if the URL query part contains http://, bug #38143
$test = ( $cut = strpos($location, '?') ) ? substr( $location, 0, $cut ) : $location;
- $lp = parse_url($test);
+ // @-operator is used to prevent possible warnings in PHP < 5.3.3.
+ $lp = @parse_url($test);
// Give up if malformed URL
if ( false === $lp )
if ( isset($lp['scheme']) && !('http' == $lp['scheme'] || 'https' == $lp['scheme']) )
return $default;
- // Reject if scheme is set but host is not. This catches urls like https:host.com for which parse_url does not set the host field.
- if ( isset($lp['scheme']) && !isset($lp['host']) )
+ // Reject if certain components are set but host is not. This catches urls like https:host.com for which parse_url does not set the host field.
+ if ( ! isset( $lp['host'] ) && ( isset( $lp['scheme'] ) || isset( $lp['user'] ) || isset( $lp['pass'] ) || isset( $lp['port'] ) ) ) {
return $default;
+ }
+
+ // Reject malformed components parse_url() can return on odd inputs
+ foreach ( array( 'user', 'pass', 'host' ) as $component ) {
+ if ( isset( $lp[ $component ] ) && strpbrk( $lp[ $component ], ':/?#@' ) ) {
+ return $default;
+ }
+ }
$wpp = parse_url(home_url());