<HighlightSyntax> /**
* Is the input a valid username? * * Checks if the input is a valid username, we don't want an empty string, * an IP address, anything that containins slashes (would mess up subpages), * is longer than the maximum allowed username size or doesn't begin with * a capital letter. * * @param string $name * @return bool * @static */ static function isValidUserName( $name ) { global $wgContLang, $wgMaxNameChars;
if ( $name == || User::isIP( $name ) || strpos( $name, '/' ) !== false || strlen( $name ) > $wgMaxNameChars || $name != $wgContLang->ucfirst( $name ) ) return false;
// Ensure that the name can't be misresolved as a different title, // such as with extra namespace keys at the start. $parsed = Title::newFromText( $name ); if( is_null( $parsed ) || $parsed->getNamespace() || strcmp( $name, $parsed->getPrefixedText() ) ) return false;
// Check an additional blacklist of troublemaker characters. // Should these be merged into the title char list? $unicodeBlacklist = '/[' . '\x{0080}-\x{009f}' . # iso-8859-1 control chars '\x{00a0}' . # non-breaking space '\x{2000}-\x{200f}' . # various whitespace '\x{2028}-\x{202f}' . # breaks and control chars '\x{3000}' . # ideographic space '\x{e000}-\x{f8ff}' . # private use ']/u'; if( preg_match( $unicodeBlacklist, $name ) ) { return false; }
return true; }
</HighlightSyntax>