From 93f6337e6ac8d95bf96a0b343a83d68442cd2153 Mon Sep 17 00:00:00 2001
From: woodser <woodser@protonmail.com>
Date: Sat, 5 Jul 2025 10:56:02 -0400
Subject: [PATCH] fix opening matrix.to link under support button by escaping

---
 .../main/java/haveno/desktop/util/GUIUtil.java  | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/desktop/src/main/java/haveno/desktop/util/GUIUtil.java b/desktop/src/main/java/haveno/desktop/util/GUIUtil.java
index 4aad28f464..2193cec831 100644
--- a/desktop/src/main/java/haveno/desktop/util/GUIUtil.java
+++ b/desktop/src/main/java/haveno/desktop/util/GUIUtil.java
@@ -124,6 +124,8 @@ import java.io.OutputStreamWriter;
 import java.math.BigInteger;
 import java.net.URI;
 import java.net.URISyntaxException;
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
 import java.nio.file.Paths;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -721,13 +723,26 @@ public class GUIUtil {
 
     private static void doOpenWebPage(String target) {
         try {
-            Utilities.openURI(new URI(target));
+            Utilities.openURI(safeParse(target));
         } catch (Exception e) {
             e.printStackTrace();
             log.error(e.getMessage());
         }
     }
 
+    private static URI safeParse(String url) throws URISyntaxException {
+        int hashIndex = url.indexOf('#');
+
+        if (hashIndex >= 0 && hashIndex < url.length() - 1) {
+            String base = url.substring(0, hashIndex);
+            String fragment = url.substring(hashIndex + 1);
+            String encodedFragment = URLEncoder.encode(fragment, StandardCharsets.UTF_8);
+            return new URI(base + "#" + encodedFragment);
+        }
+
+        return new URI(url); // no fragment
+    }
+
     public static String getPercentageOfTradeAmount(BigInteger fee, BigInteger tradeAmount) {
         String result = " (" + getPercentage(fee, tradeAmount) +
                 " " + Res.get("guiUtil.ofTradeAmount") + ")";