Add upload overwrite confirmation

build-plugin.sh

@@ -2,7 +2,7 @@
 set -eu
 
 PLUGIN="u-navigator"
-VERSION="2026.06.23.r048"
+VERSION="2026.06.23.r049"
 PKG_DIR="packages"
 WORK_DIR=".plugin-build"
 PKG_NAME="${PLUGIN}-${VERSION}.tgz"

plugin-root/usr/local/emhttp/plugins/u-navigator/api/upload.php

@@ -12,10 +12,11 @@ if (($_POST['uploadMode'] ?? '') === 'chunk') {
     $chunkIndex = filter_var($_POST['chunkIndex'] ?? null, FILTER_VALIDATE_INT);
     $totalChunks = filter_var($_POST['totalChunks'] ?? null, FILTER_VALIDATE_INT);
     $encoded = (string)($_POST['data'] ?? '');
+    $overwrite = unav_upload_bool($_POST['overwrite'] ?? false);
     if ($relativeName === '' || $chunkIndex === false || $totalChunks === false || $chunkIndex < 0 || $totalChunks < 1 || $chunkIndex >= $totalChunks) {
         unav_error(400, 'Invalid upload chunk');
     }
-    $destination = unav_prepare_upload_destination($target['path'], $relativeName);
+    $destination = unav_prepare_upload_destination($target['path'], $relativeName, $overwrite);
     $temporary = $destination['path'] . '.u-nav-upload';
     if ($chunkIndex === 0) {
         @unlink($temporary);
@@ -30,6 +31,16 @@ if (($_POST['uploadMode'] ?? '') === 'chunk') {
         unav_error(500, 'Could not write upload chunk');
     }
     $complete = $chunkIndex === $totalChunks - 1;
+    if ($complete && file_exists($destination['path'])) {
+        if (!$overwrite) {
+            @unlink($temporary);
+            unav_error(409, 'Destination already exists');
+        }
+        if (is_dir($destination['path']) || !@unlink($destination['path'])) {
+            @unlink($temporary);
+            unav_error(409, 'Destination cannot be overwritten');
+        }
+    }
     if ($complete && !rename($temporary, $destination['path'])) {
         @unlink($temporary);
         unav_error(500, 'Could not finalize upload');
@@ -47,7 +58,11 @@ if (($_POST['uploadMode'] ?? '') === 'chunk') {
 
 if (isset($_GET['relativePath']) || isset($_SERVER['HTTP_X_UNAV_RELATIVE_PATH'])) {
     $relativeName = (string)($_GET['relativePath'] ?? $_SERVER['HTTP_X_UNAV_RELATIVE_PATH']);
-    $destination = unav_prepare_upload_destination($target['path'], $relativeName);
+    $overwrite = unav_upload_bool($_GET['overwrite'] ?? ($_SERVER['HTTP_X_UNAV_OVERWRITE'] ?? false));
+    $destination = unav_prepare_upload_destination($target['path'], $relativeName, $overwrite);
+    if ($overwrite && file_exists($destination['path']) && !is_dir($destination['path']) && !@unlink($destination['path'])) {
+        unav_error(409, 'Destination cannot be overwritten');
+    }
     $bytes = file_put_contents($destination['path'], file_get_contents('php://input'), LOCK_EX);
     if ($bytes === false) {
         unav_error(500, 'Could not store uploaded file');
@@ -61,6 +76,7 @@ if (isset($_GET['relativePath']) || isset($_SERVER['HTTP_X_UNAV_RELATIVE_PATH'])
 }
 
 $uploaded = [];
+$overwrite = unav_upload_bool($_POST['overwrite'] ?? false);
 $names = unav_upload_array($_FILES['files']['name'] ?? []);
 $errors = unav_upload_array($_FILES['files']['error'] ?? []);
 $tmpNames = unav_upload_array($_FILES['files']['tmp_name'] ?? []);
@@ -70,7 +86,10 @@ foreach ($names as $index => $name) {
         unav_error(400, 'Upload failed');
     }
     $relativeName = $relativePaths[$index] ?? $name;
-    $destination = unav_prepare_upload_destination($target['path'], (string)$relativeName);
+    $destination = unav_prepare_upload_destination($target['path'], (string)$relativeName, $overwrite);
+    if ($overwrite && file_exists($destination['path']) && !is_dir($destination['path']) && !@unlink($destination['path'])) {
+        unav_error(409, 'Destination cannot be overwritten');
+    }
     if (!move_uploaded_file($tmpNames[$index] ?? '', $destination['path'])) {
         unav_error(500, 'Could not store uploaded file');
     }
@@ -82,7 +101,7 @@ foreach ($names as $index => $name) {
 
 unav_json(['uploaded' => $uploaded], 201);
 
-function unav_prepare_upload_destination(string $targetPath, string $relativeName): array {
+function unav_prepare_upload_destination(string $targetPath, string $relativeName, bool $overwrite = false): array {
     $safeName = unav_upload_safe_relative_path($relativeName);
     $relativeParent = dirname($safeName);
     if ($relativeParent !== '.') {
@@ -94,7 +113,12 @@ function unav_prepare_upload_destination(string $targetPath, string $relativeNam
     }
     $destination = unav_destination_path($targetPath . '/' . $safeName);
     if (file_exists($destination['path'])) {
-        unav_error(409, 'Destination already exists');
+        if (!$overwrite) {
+            unav_error(409, 'Destination already exists');
+        }
+        if (is_dir($destination['path'])) {
+            unav_error(409, 'Destination directory already exists');
+        }
     }
     if (!is_dir(dirname($destination['path']))) {
         unav_error(500, 'Could not create upload directory');
@@ -126,3 +150,7 @@ function unav_upload_safe_relative_path(string $name): string {
     }
     return implode('/', $parts);
 }
+
+function unav_upload_bool($value): bool {
+    return filter_var($value, FILTER_VALIDATE_BOOLEAN);
+}

server/public/app.js

@@ -904,13 +904,27 @@ async function uploadFileList(win, files, targetPath) {
   const uploadItems = normalizeUploadItems(files);
   for (const [index, item] of uploadItems.entries()) {
     recordDebug('upload.file.request', { path: item.path, size: item.file.size, index: index + 1, total: uploadItems.length });
-    await uploadFileChunked(targetPath, item.file, item.path);
+    try {
-    recordDebug('upload.file.done', { path: item.path, index: index + 1, total: uploadItems.length });
+      await uploadFileChunked(targetPath, item.file, item.path, false);
+      recordDebug('upload.file.done', { path: item.path, index: index + 1, total: uploadItems.length, overwrite: false });
+    } catch (error) {
+      if (error.status !== 409) {
+        throw error;
+      }
+      const overwrite = window.confirm(`"${item.path}" existiert bereits.\n\nVorhandene Datei überschreiben?`);
+      recordDebug('upload.overwrite.prompt', { path: item.path, overwrite });
+      if (!overwrite) {
+        recordDebug('upload.file.skipped', { path: item.path, index: index + 1, total: uploadItems.length });
+        continue;
+      }
+      await uploadFileChunked(targetPath, item.file, item.path, true);
+      recordDebug('upload.file.done', { path: item.path, index: index + 1, total: uploadItems.length, overwrite: true });
+    }
   }
   await loadExplorer(win, targetPath);
 }
 
-async function uploadFileChunked(targetPath, file, relativePath) {
+async function uploadFileChunked(targetPath, file, relativePath, overwrite = false) {
   const chunkSize = 256 * 1024;
   const totalChunks = Math.max(1, Math.ceil(file.size / chunkSize));
   let finalPayload = null;
@@ -924,6 +938,9 @@ async function uploadFileChunked(targetPath, file, relativePath) {
     body.set('chunkIndex', String(chunkIndex));
     body.set('totalChunks', String(totalChunks));
     body.set('data', data);
+    if (overwrite) {
+      body.set('overwrite', '1');
+    }
     appendCsrf(body);
     const response = await fetch(apiUrl(`upload.php?path=${encodeURIComponent(targetPath)}`), {
       method: 'POST',
@@ -941,7 +958,10 @@ async function uploadFileChunked(targetPath, file, relativePath) {
       body: text.slice(0, 1000)
     });
     if (!response.ok) {
-      throw new Error(text || `${response.status} ${response.statusText}`);
+      const error = new Error(text || `${response.status} ${response.statusText}`);
+      error.status = response.status;
+      error.path = relativePath;
+      throw error;
     }
     try {
       finalPayload = JSON.parse(text);

u-navigator.plg

@@ -1,7 +1,7 @@
 <!DOCTYPE PLUGIN [
 <!ENTITY name "u-navigator">
 <!ENTITY author "Michael Roll">
-<!ENTITY version "2026.06.23.r048">
+<!ENTITY version "2026.06.23.r049">
 <!ENTITY package "&name;-&version;.tgz">
 <!ENTITY pluginURL "https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/u-navigator.plg">
 <!ENTITY support "https://git.casaderoll.de/michael/Unraid-Navigator">
@@ -24,7 +24,7 @@
 
 <FILE Name="/boot/config/plugins/&name;/&package;">
 <URL>https://git.casaderoll.de/michael/Unraid-Navigator/raw/branch/main/packages/&package;</URL>
-<MD5>45fd0a1c4f8033d9daa56268f48742d4</MD5>
+<MD5>3bf3f4752ed9cd8b86fd27f9e17fbe14</MD5>
 </FILE>
 
 <FILE Run="/bin/bash">