From f9418593cab4e645ae2e6b7c45d651c127ffcb70 Mon Sep 17 00:00:00 2001
From: M66B <M66B@users.noreply.github.com>
Date: Sun, 1 May 2022 22:41:55 +0200
Subject: [PATCH] Stop scanning at tld

---
 .../main/java/eu/faircode/email/EmailProvider.java   |  2 ++
 app/src/main/java/eu/faircode/email/UriHelper.java   | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/app/src/main/java/eu/faircode/email/EmailProvider.java b/app/src/main/java/eu/faircode/email/EmailProvider.java
index 1478acbb23..5a7df9ebd6 100644
--- a/app/src/main/java/eu/faircode/email/EmailProvider.java
+++ b/app/src/main/java/eu/faircode/email/EmailProvider.java
@@ -426,6 +426,8 @@ public class EmailProvider implements Parcelable {
                         candidates.addAll(_fromDomain(context, target, email, discover));
                         int dot = target.indexOf('.');
                         target = target.substring(dot + 1);
+                        if (UriHelper.isTld(context, target))
+                            break;
                     }
                 }
 
diff --git a/app/src/main/java/eu/faircode/email/UriHelper.java b/app/src/main/java/eu/faircode/email/UriHelper.java
index 73d4a32fe6..08b878ce74 100644
--- a/app/src/main/java/eu/faircode/email/UriHelper.java
+++ b/app/src/main/java/eu/faircode/email/UriHelper.java
@@ -94,6 +94,18 @@ public class UriHelper {
         return (host != null && _getSuffix(context, host) != null);
     }
 
+    static boolean isTld(Context context, String host) {
+        ensureSuffixList(context);
+
+        synchronized (suffixList) {
+            int d = host.indexOf('.');
+            String w = (d < 0 ? null : '*' + host.substring(d));
+            return (!suffixList.contains('!' + host) &&
+                    !suffixList.contains(w) &&
+                    suffixList.contains(host));
+        }
+    }
+
     private static String _getSuffix(Context context, @NonNull String host) {
         ensureSuffixList(context);