How to prevent laravel from being downloaded

In the information age, there are inevitably situations where data needs to be protected. For web applications, one of the basic security measures is to prevent users or illegal programs from downloading specified files.

In the Laravel framework, the method to prevent files from being downloaded is relatively simple. This article will introduce several ways to properly protect your files to make your website more secure and avoid being attacked by hackers.

1. Using Laravel’s Routing method

In Laravel, you can use Routing to control which files can be downloaded and which cannot be downloaded.

Step 1 – Create Controller

Create a new controller in the app/Http/Controllers directory. We use the following command:

php artisan make:controller DownloadController

It will generate a new controller in the Controllers folder:

<?php
namespace App\Http\Controllers;

class DownloadController extends Controller
{
    //
}

Step 2 – Create Route

We can call it with the following route Methods in DownloadController:

Route::post('/download/{file_name}', 'DownloadController@downloadFile')->name('download.file');

Step 3 – Create Download method

The next step is to create a new method for DownloadController so that it can be called from the GET route.

<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Support\Facades\Storage;
use Illuminate\Support\Facades\Response;

class DownloadController extends Controller
{
    public function downloadFile($fileName)
    {
        $file = Storage::disk(&#39;public&#39;)->get($fileName);

        return Response::download($file, $fileName);
    }
}

Now, you can enter the following URL address in the web browser to test the program:

http://127.0.0.1:8000/download/before-download-test-file.txt

2. Use the File class method

This method uses PHP's file_get_contents() function, which has the function of accessing files and reading their contents.

Route::get('/download', function(){
    $file = public_path()."/test.zip";
    $headers = array(
              'Content-Type: application/octet-stream',
            );
    return Response::download($file, 'test.zip', $headers);
});

3. Read the file directly

The third method is the most common method. The basic idea is to read the file directly into the memory and send it to the client.

Route::get('/download', function(){
    $file = public_path()."/test.zip";
    $headers = array(
              'Content-Type: application/octet-stream',
            );
    return Response::make(file_get_contents($file), 200, $headers);
});

Summary

Regarding how to prevent files in Laravel from being downloaded, there are several calibers to choose from. Initially, Routing can be used to control which files can and cannot be downloaded. Beyond that, there are two standard ways: using Laravel's File class (file_get_contents()) or reading the file directly. Keeping your website secure is crucial when it comes to file protection and download security, and if implemented correctly, these methods can enhance your website's security and avoid fake attacks.

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