From 52a90d669cd728f77ad041e7bba75c1ac8b45848 Mon Sep 17 00:00:00 2001
From: Joshua Ramon Enslin <joshua@museum-digital.de>
Date: Tue, 14 Dec 2021 15:40:07 +0100
Subject: [PATCH] Validate geonames and TGN IDs fetched from Wikidata

---
 src/NodaWikidataFetcher.php | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/NodaWikidataFetcher.php b/src/NodaWikidataFetcher.php
index 5fc270c..94e847c 100644
--- a/src/NodaWikidataFetcher.php
+++ b/src/NodaWikidataFetcher.php
@@ -1102,8 +1102,8 @@ final class NodaWikidataFetcher {
         $currentPlaceResult->close();
         unset($currentPlaceResult);
 
-        if (isset($data['claims']['P1566'])) $geonames_id = $data['claims']['P1566'][0]['mainsnak']['datavalue']['value'];
-        if (isset($data['claims']['P1667'])) $tgn_id = $data['claims']['P1667'][0]['mainsnak']['datavalue']['value'];
+        if (isset($data['claims']['P1566'])) $geonames_id = filter_var($data['claims']['P1566'][0]['mainsnak']['datavalue']['value'], FILTER_VALIDATE_INT);
+        if (isset($data['claims']['P1667'])) $tgn_id = filter_var($data['claims']['P1667'][0]['mainsnak']['datavalue']['value'], FILTER_VALIDATE_INT);
 
         $nodaLinks = [
             "wikidata" => $wikidata_id,