Added constant 'REGISTER_USERNAME', which checks if username already used.

2 files changed, 11 insertions, 3 deletions

diff --git a/www/constants.php b/www/constants.php
index 9ea8a5d..9935e1c 100644
--- a/www/constants.php
+++ b/www/constants.php
@@ -14,7 +14,8 @@ define("REGISTER_EMAIL", 8);
 define("REGISTER_DATABASE", 9);
 define("REGISTER_PROHIBITED", 10);
 define("REGISTER_INVITEKEY", 12);
+define("REGISTER_USERNANE", 13);
 
-define("INVITE_SUCCESSFULL", 13);
-define("INVITE_INVITES", 14);
-define("INVITE_DATABASE", 15);
+define("INVITE_SUCCESSFULL", 14);
+define("INVITE_INVITES", 15);
+define("INVITE_DATABASE", 16);
diff --git a/www/functions/func_register.php b/www/functions/func_register.php
index fc93058..e7c5536 100755
--- a/www/functions/func_register.php
+++ b/www/functions/func_register.php
@@ -37,6 +37,13 @@ function register($db){
 		return REGISTER_INVITEKEY;
 	}
 
+	$doubleusername_db = $db->query("SELECT 1 FROM user WHERE name='" . $safe_name . "';");
+	$doubleusername_ar = $doubleusername_db->fetchArray(SQLITE3_NUM);
+
+	if($doubleusername_ar[0] == 1){
+		return REGISTER_USERNAME;
+	}
+
         $id_db = $db->query("SELECT id FROM user WHERE email='" . $safe_email . "';");
         $id_ar = $id_db->fetchArray(SQLITE3_NUM);
         $id = $id_ar[0];