From 6aee27a3f17fffd4dc3790b87a09658a1f2f116e Mon Sep 17 00:00:00 2001
From: Viktor Lofgren <vlofgren@marginalia.nu>
Date: Fri, 29 Dec 2023 16:36:01 +0100
Subject: [PATCH] (*) Fix bug in EdgeDomain where it would permit domains with
 a trailing period, DNS style.

---
 .../model/src/main/java/nu/marginalia/model/EdgeDomain.java | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/code/common/model/src/main/java/nu/marginalia/model/EdgeDomain.java b/code/common/model/src/main/java/nu/marginalia/model/EdgeDomain.java
index d60f3571..0686a9ce 100644
--- a/code/common/model/src/main/java/nu/marginalia/model/EdgeDomain.java
+++ b/code/common/model/src/main/java/nu/marginalia/model/EdgeDomain.java
@@ -23,6 +23,12 @@ public class EdgeDomain implements Serializable {
 
         host = host.toLowerCase();
 
+        // Remove trailing dots, which are allowed in DNS but not in URLs
+        // (though sometimes still show up in the wild)
+        while (!host.isBlank() && host.endsWith(".")) {
+            host = host.substring(0, host.length() - 1);
+        }
+
         var dot = host.lastIndexOf('.');
 
         if (dot < 0 || looksLikeAnIp(host)) { // IPV6 >.>