From 27a73f94ebfb349b9268fa190ca9d32dd90dfa75 Mon Sep 17 00:00:00 2001
From: citizen-VM <citizen@win.vm>
Date: Mon, 24 Aug 2020 18:34:22 +0200
Subject: [PATCH] fix: enforce message checking

* follow-up of 33e268d7dc
* fixes #1
---
 main_form.cs | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/main_form.cs b/main_form.cs
index d7fcafd..a3e7365 100644
--- a/main_form.cs
+++ b/main_form.cs
@@ -168,27 +168,27 @@ namespace KRY_0x01_ng
             return;
         }
 
-        void check_cryptmessage(TextBox tb_m)
+        bool check_cryptmessage(TextBox tb_m)
         {
             if (tb_m.Text.Length == 0)
             {
                 MessageBox.Show("Empty message, nothing to do.", "Warning");
-                return;
+                return false;
             }
             string msg = tb_m.Text.ToUpper();
             Match match = Regex.Match(msg, @"\d|\s+|W");
             if (match.Success)
             {
                 MessageBox.Show("Only alphabetic characters (with the exception of W) are allowed.\nCheck the cryptmessage for numbers, symbols or tab whitespace and remove them before continuing.", "Error");
-                return;
+                return false;
             }
             if (tb_m.Text.Length % 2 != 0)
             {
                 MessageBox.Show("This pretty sure can't be a message I can deal with (uneven number of characters).", "Error");
-                return;
+                return false;
             }
             textBox9.Text = msg;
-            return;
+            return true;
         }
 
         string msg_hack_up(string msg)
@@ -297,7 +297,10 @@ namespace KRY_0x01_ng
                 return;
             }
             fill_array_table();
-            check_cryptmessage(textBox9);
+            if (!check_cryptmessage(textBox9))
+            {
+                return;
+            }
 
             string message = "";
             string crm = textBox9.Text;