From bc6c6d735be8c6ecf7b20ca3430d01ac351fd5a0 Mon Sep 17 00:00:00 2001
From: Naglfar <naglfar@tilde.team>
Date: Thu, 7 May 2020 12:03:45 +0200
Subject: [PATCH] Check if username already taken

---
 articles/success3.md | 3 +++
 includes/signup.php  | 6 ++++++
 2 files changed, 9 insertions(+)
 create mode 100644 articles/success3.md

diff --git a/articles/success3.md b/articles/success3.md
new file mode 100644
index 0000000..a004ed0
--- /dev/null
+++ b/articles/success3.md
@@ -0,0 +1,3 @@
+# Form Failure 
+
+This username is already registered, please choose another one.
diff --git a/includes/signup.php b/includes/signup.php
index 40e2939..fdde86c 100644
--- a/includes/signup.php
+++ b/includes/signup.php
@@ -28,6 +28,12 @@ if ( $tv == "tildeverse" )
 {
   // Success!
   $success = 'success2';
+  
+  // Check if username already taken
+  $lowercase = strtolower($username);
+  exec("id $lowercase 2>&1", $null, $retval);
+  if($retval == 0)
+    $success = 'success3';
 
   if ( $success == "success2" )
     mail($destination_addr, $subject, $mailbody, $from);