In commit 0722f46 (Simplify valid_user() and valid_username(), 2014-02-06), the conversion to lower case letters was unintentionally removed and in consequence, names with upper case letters have been rejected since then. Instead of reintroducing the conversion, add the "i" modifier to the regular expression validating the name to do case-insensitive pattern matching. Signed-off-by: Lukas Fleischer --- web/lib/acctfuncs.inc.php | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/web/lib/acctfuncs.inc.php b/web/lib/acctfuncs.inc.php index 962ebb4..51ffec6 100644 --- a/web/lib/acctfuncs.inc.php +++ b/web/lib/acctfuncs.inc.php @@ -538,7 +538,7 @@ function valid_username($user) { if (strlen($user) < USERNAME_MIN_LEN || strlen($user) > USERNAME_MAX_LEN) { return false; - } else if (!preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/", $user)) { + } else if (!preg_match("/^[a-z0-9]+[.\-_]?[a-z0-9]+$/i", $user)) { return false; } -- 1.9.3