Drupal Paranoia

Composer plugin for improving the website security for composer-based Drupal websites by moving all PHP files out of docroot.

Why use this Plugin?

The critical security issue with Coder is a good example to consider moving PHP files outside of docroot:

• SA-CONTRIB-2016-039 - Remote Code Execution
• https://twitter.com/drupalsecurity/status/753263548458004480

More related links:

• Moving all PHP files out of the docroot
• #1672986: Option to have all php files outside of web root

Requirements

Except for Windows, this plugin should work on environments that have Composer support. Do you use Windows? Help us.

Installation

Make sure you have a based drupal-composer/drupal-project project created.

Rename your current docroot directory to /app.

cd drupal-project-root
mv web app

Update the composer.json of your root package with the following values:

"extra": {
    "drupal-paranoia": {
        "app-dir": "app",
        "web-dir": "web"
    },
    "installer-paths": {
        "app/core": ["type:drupal-core"],
        "app/libraries/{$name}": ["type:drupal-library"],
        "app/modules/contrib/{$name}": ["type:drupal-module"],
        "app/profiles/contrib/{$name}": ["type:drupal-profile"],
        "app/themes/contrib/{$name}": ["type:drupal-theme"],
        "drush/contrib/{$name}": ["type:drupal-drush"]
    }
}

Explaining:

• /app folder: Drupal full installation.
• /web folder: Will contain only symlinks of the assets files and PHP stub files (index.php, install.php, etc) from the /app folder.

Use composer require ... to install this Plugin on your project.

composer require drupal-composer/drupal-paranoia:~1

Done! The plugin and the new docroot are now installed.

Asset file types

The asset files are symlinked from /app to /web folder.

Default asset file types are provided by the plugin:

robots.txt
.htaccess
*.css
*.eot
*.ico
*.gif
*.jpeg
*.jpg
*.js
*.map
*.otf
*.png
*.svg
*.ttf
*.woff
*.woff2

To extend the list of assets file types you can use the asset-files config:

"extra": {
    "drupal-paranoia": {
        "app-dir": "app",
        "web-dir": "web",
        "asset-files": [
            "somefile.txt",
            "*.md"
        ]
    },
    "..."
}

If you need to modify the list you can use the post-drupal-set-asset-file-types event:

"scripts": {
    "post-drupal-set-asset-file-types": [
        "DrupalProject\\composer\\ScriptHandler::setAssetFileTypes"
    ],
    "..."
},

<?php

/**
 * @file
 * Contains \DrupalProject\composer\ScriptHandler.
 */

namespace DrupalProject\composer;

use DrupalComposer\DrupalParanoia\AssetFileTypesEvent;

class ScriptHandler {

  public static function setAssetFileTypes(AssetFileTypesEvent $event) {
    $asset_file_types = $event->getAssetFileTypes();
    // Do what you want with the asset file types.
    $event->setAssetFileTypes($asset_file_types);
  }

}

By the purpose of this plugin, the following files types are not allowed and if listed they will be ignored:

*.inc
*.install
*.module
*.phar
*.php
*.profile
*.theme

Exclude paths

With the drupal-paranoia option excludes, you can provide paths that should not be symlinked or stubbed to /web folder. The plugin provides no excludes by default.

"extra": {
    "drupal-paranoia": {
        "app-dir": "app",
        "web-dir": "web",
        "excludes": [
            "core/install.php",
            "sites/simpletest"
        ]
    },
    "..."
}

NOTE: Consider to exclude /install.php from your site. There are security concerns when this URL is publicly available, it can be used to create a list of contributed modules existing on the site. You can exclude it via plugin as described above or via .htaccess rules.

• DO#2840973: Install system should not produce PHP errors
• https://www.drupalxray.com

Web server docroot

Change the document root config of your web server to point to /web folder.

Plugin events

This plugin fires the following named event during its execution process:

• drupal-paranoia-post-command-run: Occurs after the command drupal:paranoia is executed.

Example of event subscriber

<?php

namespace MyVendor;

use Composer\Composer;
use Composer\EventDispatcher\EventSubscriberInterface;
use Composer\IO\IOInterface;
use Composer\Plugin\PluginInterface;
use DrupalComposer\DrupalParanoia\PluginEvents as DrupalParanoiaPluginEvents;

class MyClass implements PluginInterface, EventSubscriberInterface
{
    protected $composer;
    protected $io;

    public function activate(Composer $composer, IOInterface $io)
    {
        $this->composer = $composer;
        $this->io = $io;
    }

    public static function getSubscribedEvents()
    {
        return array(
            DrupalParanoiaPluginEvents::POST_COMMAND_RUN => 'postDrupalParanoiaCommand',
        );
    }

    public function postDrupalParanoiaCommand(CommandEvent $event) {
        // Add your custom action.
    }
}

Local development

Every time you install or update a Drupal package via Composer, the /web folder will be recreated.

composer require drupal/devel:~1.0
> drupal-paranoia: docroot folder has been rebuilt.

When working with themes, CSS and JS for example, it may be necessary to rebuild the folder manually to symlink the new assets.

composer drupal:paranoia

Public files

This plugin assumes that the public files folder exists at app/sites/<site>/files and symlinks web/sites/<site>/files -> ../../../app/sites/<site>/files.