yii2-netdisk/controllers/HomeController.php

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<?php
namespace app\controllers;
use app\models\RenameForm;
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use app\utils\FileTypeDetector;
use Yii;
use yii\filters\VerbFilter;
use yii\helpers\ArrayHelper;
use yii\web\Controller;
use yii\web\NotFoundHttpException;
use yii\web\Response;
class HomeController extends Controller
{
public function behaviors()
{
return array_merge(
parent::behaviors(),
[
'verbs' => [
'class' => VerbFilter::class,
'actions' => [
'index' => ['GET'],
'download' => ['GET'],
'rename' => ['POST'],
'delete' => ['POST'],
],
],
]
);
}
/**
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* diplay the page of the file manager (accepts a directory parameter like cd command)
* visit it via https://devs.chenx221.cyou:8081/index.php?r=home
*
* @return string|Response
* @throws NotFoundHttpException
*/
public function actionIndex($directory = null)
{
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//Warning: Security Vulnerability: access via $directory parameter = ../ will display the internal files of the server
if (Yii::$app->user->isGuest) {
return $this->redirect(Yii::$app->user->loginUrl);
}
$rootDataDirectory = Yii::getAlias(Yii::$app->params['dataDirectory']);
$userId = Yii::$app->user->id;
if ($directory === '.' ||$directory == null) {
$directory = null;
$parentDirectory = null;
} elseif ($directory === '..' || str_contains($directory, '../')) {
throw new NotFoundHttpException('Invalid directory.');
} else {
$parentDirectory = dirname($directory);
}
$directoryContents = $this->getDirectoryContents(join(DIRECTORY_SEPARATOR, [$rootDataDirectory, $userId, $directory ?: '.']));
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foreach ($directoryContents as $key => $item) {
$relativePath = $directory ? $directory . '/' . $item : $item;
$absolutePath = Yii::getAlias('@app') . '/data/' . Yii::$app->user->id . '/' . $relativePath;
$type = FileTypeDetector::detect($absolutePath);
$directoryContents[$key] = ['name' => $item, 'type' => $type];
}
return $this->render('index', [
'directoryContents' => $directoryContents,
'parentDirectory' => $parentDirectory,
'directory' => $directory, // 将$directory传递给视图
]);
}
/**
* 获取指定路径下的文件和文件夹内容
* @param string $path 路径
* @return array 文件和文件夹内容数组
* @throws NotFoundHttpException 如果路径不存在
*/
protected function getDirectoryContents($path)
{
// 确定路径是否存在
if (!is_dir($path)) {
throw new NotFoundHttpException('Directory not found.');
}
// 获取路径下的所有文件和文件夹
$directoryContents = scandir($path);
// 移除 '.' 和 '..'
$directoryContents = array_diff($directoryContents, ['.', '..']);
// 使用 usort 对目录内容进行排序,使文件夹始终在文件之前
usort($directoryContents, function ($a, $b) use ($path) {
$aIsDir = is_dir($path . '/' . $a);
$bIsDir = is_dir($path . '/' . $b);
if ($aIsDir === $bIsDir) {
return strnatcasecmp($a, $b); // 如果两者都是文件夹或都是文件,按名称排序
}
return $aIsDir ? -1 : 1; // 文件夹始终在文件之前
});
return $directoryContents;
}
/**
* 下载指定路径下的文件
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* download link:https://devs.chenx221.cyou:8081/index.php?r=home%2Fdownload&relativePath={the relative path of the file}
*
* @param string $relativePath 文件的相对路径
* @throws NotFoundHttpException 如果文件不存在
*/
public function actionDownload($relativePath)
{
// 对相对路径进行解码
$relativePath = rawurldecode($relativePath);
// 检查相对路径是否只包含允许的字符
if (!preg_match('/^[\w\-.\/\s]+$/u', $relativePath) || $relativePath === '.' || $relativePath === '..' || str_contains($relativePath, '../')) {
throw new NotFoundHttpException('Invalid file path.');
}
// 确定文件的绝对路径
$absolutePath = Yii::getAlias(Yii::$app->params['dataDirectory']) . '/' . Yii::$app->user->id . '/' . $relativePath;
// 使用realpath函数解析路径并检查解析后的路径是否在预期的目录中
$realPath = realpath($absolutePath);
$dataDirectory = str_replace('/', '\\', Yii::getAlias(Yii::$app->params['dataDirectory']));
if (!$realPath || !str_starts_with($realPath, $dataDirectory)) {
throw new NotFoundHttpException('File not found.');
}
// 检查文件是否存在
if (!file_exists($realPath)) {
throw new NotFoundHttpException('File not found.');
}
// 将文件发送给用户进行下载
Yii::$app->response->sendFile($realPath)->send();
}
/**
* 重命名文件或文件夹
* @param string $relativePath 文件或文件夹的相对路径
* @param string $newName 新名称
* @throws NotFoundHttpException 如果文件或文件夹不存在
*/
public function actionRename()
{
$relativePath = Yii::$app->request->post('relativePath');
// 对相对路径进行解码
$relativePath = rawurldecode($relativePath);
// 检查相对路径是否只包含允许的字符
if (!preg_match('/^[\w\-.\/\s]+$/u', $relativePath) || $relativePath === '.' || $relativePath === '..' || str_contains($relativePath, '../')) {
throw new NotFoundHttpException('Invalid file path.');
}
// 确定文件的绝对路径
$absolutePath = Yii::getAlias(Yii::$app->params['dataDirectory']) . '/' . Yii::$app->user->id . '/' . $relativePath;
// 检查文件或文件夹是否存在
if (!file_exists($absolutePath)) {
throw new NotFoundHttpException('File or directory not found.');
}
$model = new RenameForm();
$model->newName = ArrayHelper::getValue(Yii::$app->request->post('RenameForm'), 'newName');
if (!$model->validate()) {
Yii::$app->response->statusCode = 400;
return $model->getFirstError('newName');
}
// 检查新名称是否和现有的文件或文件夹重名
if (file_exists(dirname($absolutePath) . '/' . $model->newName)) {
Yii::$app->session->setFlash('error', 'Failed to rename file or directory.');
return $this->redirect(['index', 'directory' => dirname($relativePath)]);
}
// 重命名文件或文件夹
if (!rename($absolutePath, dirname($absolutePath) . '/' . $model->newName)) {
Yii::$app->session->setFlash('error', 'Failed to rename file or directory.');
} else {
Yii::$app->session->setFlash('success', 'File or directory renamed successfully.');
}
return $this->redirect(['index', 'directory' => dirname($relativePath)]);
}
/**
* 删除文件或文件夹
* @throws NotFoundHttpException 如果文件或文件夹不存在
*/
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public function actionDelete()
{
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$relativePath = Yii::$app->request->post('relativePath');
$relativePath = rawurldecode($relativePath);
if (!preg_match('/^[\w\-.\/\s]+$/u', $relativePath) || $relativePath === '.' || $relativePath === '..' || str_contains($relativePath, '../')) {
throw new NotFoundHttpException('Invalid file path.');
}
$absolutePath = Yii::getAlias(Yii::$app->params['dataDirectory']) . '/' . Yii::$app->user->id . '/' . $relativePath;
if (!file_exists($absolutePath)) {
throw new NotFoundHttpException('File or directory not found.');
} else {
$realPath = realpath($absolutePath);
$expectedPathPrefix = realpath(Yii::getAlias(Yii::$app->params['dataDirectory']) . '/' . Yii::$app->user->id);
if (!str_starts_with($realPath, $expectedPathPrefix)) {
throw new NotFoundHttpException('File or directory not found.');
}
}
if (is_dir($absolutePath)) {
if (!$this->deleteDirectory($absolutePath)) {
Yii::$app->session->setFlash('error', 'Failed to delete directory.');
} else {
Yii::$app->session->setFlash('success', 'Directory deleted successfully.');
}
} else {
if (!unlink($absolutePath)) {
Yii::$app->session->setFlash('error', 'Failed to delete file.');
} else {
Yii::$app->session->setFlash('success', 'File deleted successfully.');
}
}
return $this->redirect(['index', 'directory' => dirname($relativePath)]);
}
/**
* 递归删除目录及其内容
* @param string $dir 目录路径
*/
protected function deleteDirectory($dir): bool
{
if (!is_dir($dir)) {
return false;
}
$files = array_diff(scandir($dir), ['.', '..']);
foreach ($files as $file) {
if (is_dir("$dir/$file")) {
if (!$this->deleteDirectory("$dir/$file")) {
return false;
}
} else {
if (!unlink("$dir/$file")) {
return false;
}
}
}
if (!rmdir($dir)) {
return false;
}
return true;
}
}