From dde8308fe8a9c8614df07f147da8662cd7caade7 Mon Sep 17 00:00:00 2001
From: Hendrik Leidinger <hendrik.leidinger@nextcloud.com>
Date: Wed, 4 Mar 2026 00:51:11 -0800
Subject: [PATCH] fix: manually set modified time to SFTP files after editing

Signed-off-by: Hendrik Leidinger <hendrik.leidinger@nextcloud.com>
---
 apps/files_external/lib/Lib/Storage/SFTP.php      | 15 ++++++++++++++-
 .../lib/Lib/Storage/SFTPWriteStream.php           |  6 ++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/apps/files_external/lib/Lib/Storage/SFTP.php b/apps/files_external/lib/Lib/Storage/SFTP.php
index 6504ea610f345..91d3e77c8101f 100644
--- a/apps/files_external/lib/Lib/Storage/SFTP.php
+++ b/apps/files_external/lib/Lib/Storage/SFTP.php
@@ -333,7 +333,10 @@ public function fopen(string $path, string $mode) {
 					$fh = fopen('sftpwrite://' . trim($absPath, '/'), 'w', false, $context);
 					if ($fh) {
 						$fh = CallbackWrapper::wrap($fh, null, null, function () use ($path): void {
-							$this->knownMTimes->set($path, time());
+							$mtime = time();
+							$this->knownMTimes->set($path, $mtime);
+							$this->getConnection()->touch($this->absPath($path), $mtime, $mtime);
+							$this->getConnection()->clearStatCache();
 						});
 					}
 					return $fh;
@@ -429,6 +432,11 @@ public function constructUrl(string $path): string {
 	public function file_put_contents(string $path, mixed $data): int|float|false {
 		/** @psalm-suppress InternalMethod */
 		$result = $this->getConnection()->put($this->absPath($path), $data);
+		$mtime = time();
+		$this->knownMTimes->set($path, $mtime);
+		$this->getConnection()->touch($this->absPath($path), $mtime, $mtime);
+		$this->getConnection()->clearStatCache();
+
 		if ($result) {
 			return strlen($data);
 		} else {
@@ -448,6 +456,11 @@ public function writeStream(string $path, $stream, ?int $size = null): int {
 		/** @psalm-suppress InternalMethod */
 		$result = $this->getConnection()->put($this->absPath($path), $stream);
 		fclose($stream);
+		$mtime = time();
+		$this->knownMTimes->set($path, $mtime);
+		$this->getConnection()->touch($this->absPath($path), $mtime, $mtime);
+		$this->getConnection()->clearStatCache();
+
 		if ($result) {
 			if ($size === null) {
 				throw new \Exception('Failed to get written size from sftp storage wrapper');
diff --git a/apps/files_external/lib/Lib/Storage/SFTPWriteStream.php b/apps/files_external/lib/Lib/Storage/SFTPWriteStream.php
index 6a5e2e19fdcaf..f1dba8ec22357 100644
--- a/apps/files_external/lib/Lib/Storage/SFTPWriteStream.php
+++ b/apps/files_external/lib/Lib/Storage/SFTPWriteStream.php
@@ -32,6 +32,8 @@ class SFTPWriteStream implements File {
 
 	private $buffer = '';
 
+	private string $path;
+
 	public static function register($protocol = 'sftpwrite') {
 		if (in_array($protocol, stream_get_wrappers(), true)) {
 			return false;
@@ -71,6 +73,8 @@ public function stream_open($path, $mode, $options, &$opened_path) {
 		}
 
 		$remote_file = $this->sftp->_realpath($path);
+
+		$this->path = $remote_file;
 		if ($remote_file === false) {
 			return false;
 		}
@@ -160,6 +164,8 @@ public function stream_close() {
 		if (!$this->sftp->_close_handle($this->handle)) {
 			return false;
 		}
+		$this->sftp->touch($this->path, time(), time());
+
 		return true;
 	}
 }