From 1e3cf08d82eedfbdd0ca2bc10ced971fd1adc3dc Mon Sep 17 00:00:00 2001
From: Stephen Paul Weber <singpolyma@singpolyma.net>
Date: Thu, 22 Oct 2015 17:20:03 +0000
Subject: [PATCH] Ignore non-local notices as targets

---
 plugins/Linkback/lib/util.php | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/plugins/Linkback/lib/util.php b/plugins/Linkback/lib/util.php
index e4893bc644..803c47763d 100644
--- a/plugins/Linkback/lib/util.php
+++ b/plugins/Linkback/lib/util.php
@@ -24,7 +24,6 @@ function linkback_get_source($source, $target) {
 
 function linkback_get_target($target) {
     // TODO: linkback to a user should work for attention
-    // TODO: ignore remote notices and users
     // Resolve target (https://github.com/converspace/webmention/issues/43)
     $request = HTTPClient::start();
 
@@ -35,10 +34,14 @@ function linkback_get_target($target) {
     }
 
     try {
-        return Notice::fromUri($response->getEffectiveUrl());
+        $notice = Notice::fromUri($response->getEffectiveUrl());
     } catch(UnknownUriException $ex) {
         preg_match('/\/notice\/(\d+)(?:#.*)?$/', $response->getEffectiveUrl(), $match);
-        return Notice::getKV('id', $match[1]);
+        $notice = Notice::getKV('id', $match[1]);
+    }
+
+    if($notice instanceof Notice && $notice->isLocal()) {
+        return $notice;
     }
 
     return NULL;