From 1a2366f5eeaab22e930526fd3c402523122bd7eb Mon Sep 17 00:00:00 2001
From: Matthew Cech <contact@matthewcech.com>
Date: Fri, 21 Feb 2020 11:22:20 -0800
Subject: [PATCH] + Added hex verification

---
 src/network/NetworkTheColorAPI.java | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/network/NetworkTheColorAPI.java b/src/network/NetworkTheColorAPI.java
index 5f2e2b2..07e9b35 100644
--- a/src/network/NetworkTheColorAPI.java
+++ b/src/network/NetworkTheColorAPI.java
@@ -75,7 +75,21 @@ public class NetworkTheColorAPI
 	{
 		try
 		{
-			hex = hex.replace("#", "");
+			hex = hex.replace("#", "").trim();
+			String hexUpper = hex.toUpperCase();
+			
+			// Verify the number is hex.
+			for(int i = 0; i < hexUpper.length(); ++i)
+			{
+				char current = hexUpper.charAt(i);
+				Boolean isValidNum = current >= '0' && current <= '9';
+				Boolean isValidChar = current >= 'A' && current <= 'F';
+				
+				// If it's not a valid character or a valid number, return null/
+				if(!isValidNum && !isValidChar)
+					return null;
+			}
+			
 			String response = HTTPUtils.sendGETRequest("https://www.thecolorapi.com/id?hex=" + hex);
 			
 			ColorData data = jsonParser.fromJson(response, ColorData.class);