From da8d5f501592274e5814cbcd7af36450c57f1823 Mon Sep 17 00:00:00 2001
From: Michael <heluecht@pirati.ca>
Date: Mon, 24 May 2021 19:44:24 +0000
Subject: [PATCH] Issue 9926: Limit the length of data to store in the
 apcontact table

---
 src/Database/DBStructure.php | 4 ++++
 src/Model/APContact.php      | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/src/Database/DBStructure.php b/src/Database/DBStructure.php
index 82e405942f..04ba956bc9 100644
--- a/src/Database/DBStructure.php
+++ b/src/Database/DBStructure.php
@@ -241,6 +241,10 @@ class DBStructure
 		// Assign all field that are present in the table
 		foreach ($fieldnames as $field) {
 			if (isset($data[$field])) {
+				// Limit the length of varchar, varbinary, char and binrary fields
+				if (is_string($data[$field]) && preg_match("/[char|binary]\((\d*)\)/", $definition[$table]['fields'][$field]['type'], $result)) {
+					$data[$field] = mb_substr($data[$field], 0, $result[1]);
+				}
 				$fields[$field] = $data[$field];
 			}
 		}
diff --git a/src/Model/APContact.php b/src/Model/APContact.php
index 7a63e413ca..28bb31c83d 100644
--- a/src/Model/APContact.php
+++ b/src/Model/APContact.php
@@ -26,6 +26,7 @@ use Friendica\Core\Cache\Duration;
 use Friendica\Core\Logger;
 use Friendica\Core\System;
 use Friendica\Database\DBA;
+use Friendica\Database\DBStructure;
 use Friendica\DI;
 use Friendica\Network\Probe;
 use Friendica\Protocol\ActivityNamespace;
@@ -349,6 +350,9 @@ class APContact
 			DBA::delete('apcontact', ['url' => $url]);
 		}
 
+		// Limit the length on incoming fields
+		$apcontact = DBStructure::getFieldsForTable('apcontact', $apcontact);
+
 		if (DBA::exists('apcontact', ['url' => $apcontact['url']])) {
 			DBA::update('apcontact', $apcontact, ['url' => $apcontact['url']]);
 		} else {