From c2dafb099781a31745749ae399cf864b2a195000 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?C=C3=B4me=20Chilliet?= <come.chilliet@nextcloud.com>
Date: Tue, 6 Sep 2022 17:22:16 +0200
Subject: [PATCH] Do not empty config.php file if reading failed for any reason
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Signed-off-by: Côme Chilliet <come.chilliet@nextcloud.com>
---
 lib/private/Config.php | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/lib/private/Config.php b/lib/private/Config.php
index 37708357339c1..ba3b8c6fe4d36 100644
--- a/lib/private/Config.php
+++ b/lib/private/Config.php
@@ -262,6 +262,10 @@ private function readData() {
 	private function writeData() {
 		$this->checkReadOnly();
 
+		if (!is_file(\OC::$configDir.'/CAN_INSTALL') && !isset($this->cache['version'])) {
+			throw new HintException(sprintf('Configuration was not read or initialized correctly, not overwriting %s', $this->configFilePath));
+		}
+
 		// Create a php file ...
 		$content = "<?php\n";
 		$content .= '$CONFIG = ';