# Bad Behaviour

Bad Behaviour prevents spammers from ever delivering their junk, and in many
cases, from ever reading your site in the first place.

## Description

Welcome to a whole new way of keeping your blog, forum, guestbook, wiki or
content management system free of link spam. Bad Behaviour is a PHP-based
solution for blocking link spam and the robots which deliver it.

Thousands of sites large and small, trust Bad Behaviour to help reduce
incoming link spam and malicious activity.

Bad Behaviour complements other link spam solutions by acting as a gatekeeper,
preventing spammers from ever delivering their junk, and in many cases, from
ever reading your site in the first place. This keeps your site's load down,
makes your site logs cleaner, and can help prevent denial of service
conditions caused by spammers.

Bad Behaviour also transcends other link spam solutions by working in a
completely different, unique way. Instead of merely looking at the content of
potential spam, Bad Behaviour analyzes the delivery method as well as the
software the spammer is using. In this way, Bad Behaviour can stop spam attacks
even when nobody has ever seen the particular spam before.

Bad Behaviour is designed to work alongside existing spam prevention services
to increase their effectiveness and efficiency. Whenever possible, you should
run it in combination with a more traditional spam prevention service.

Bad Behaviour works on, or can be adapted to, virtually any PHP-based Web
software package. Bad Behaviour is available for many packages.

Installing and configuring Bad Behaviour on most platforms is simple and takes
only a few minutes. In most cases, no configuration at all is needed. Simply
turn it on and stop worrying about spam!

The core of Bad Behaviour is free software released under the GNU Lesser General
Public License, version 3, or at your option, any later version.

---

## What's New in 2.3.0 (The Composer & OOP Refactor)

Version 2.3.0 represents a major architectural overhaul of Bad Behaviour. The core logic has been decoupled from platform-specific global variables and bootstrap scripts, transformed into a modern, self-contained Composer package.

* **PSR-4 Autoloading:** Bad Behaviour is now a standard Composer library (`composer require badbehaviour/badbehaviour`). No more `require_once` chains across your application.
* **Inversion of Control (Dependency Injection):** All host-specific behavior (database queries, escaping, email routing, settings persistence) is now handled via the `BadBehaviour\Core\HostAdapterInterface`. 
* **Provided Adapters:** Out-of-the-box support for `GenericAdapter`, `MediaWikiAdapter`, and `WackoWikiAdapter` bridges the gap between the new OOP core and existing platforms.
* **No Global State Leaks:** The library never touches global application variables (like `$db` or `$wgDBprefix`) without explicit instruction via an adapter. 
* **No Side Effects on Load:** Requiring the package via Composer or `use BadBehaviour\Core\BadBehaviour;` no longer triggers screening or calls `die()`. The host application retains full control over execution flow. Screening only triggers when you explicitly call `$bb->run()`.
* **Backwards Compatible Shims:** Existing drop-in integrations (`bad-behaviour-generic.php`, `bad-behaviour-mediawiki.php`, etc.) have been retained as thin shims. They now automatically instantiate the new OOP classes internally, meaning existing installs upgrade seamlessly without changing a single line of legacy code.
* **PHPUnit Ready:** The codebase is now fully unit-testable. A testing scaffold is included to verify screening logic without HTTP traffic or live databases.

---

## Installation & Usage

Bad Behaviour 2.3.0 can be installed either as a legacy drop-in for existing platforms or via Composer for modern frameworks (Laravel, Symfony, modern MediaWiki, etc.).

### Option 1: Modern Composer Usage (Recommended)

1. Install via Composer:
   ```bash
   composer require badbehaviour/badbehaviour
   ```

2. Instantiate the library using your preferred adapter:

**For Generic Applications:**
```php
require 'vendor/autoload.php';

use BadBehaviour\Core\BadBehaviour;
use BadBehaviour\Core\Adapter\GenericAdapter;

// Pass custom settings inline if required
$custom = ['strict' => true];
$adapter = new GenericAdapter();
$bb = new BadBehaviour($adapter, $custom);
$bb->run();
```

**For MediaWiki (e.g. `LocalSettings.php`):**
```php
require "$IP/vendor/autoload.php";

use BadBehaviour\Core\BadBehaviour;
use BadBehaviour\Core\Adapter\MediaWikiAdapter;

// Pass the native MediaWiki database object, prefix, email, and root script
$db = wfGetDB(DB_MASTER);
$adapter = new MediaWikiAdapter($db, $wgDBprefix, $wgEmergencyContact, $wgScript);
$bb = new BadBehaviour($adapter);
$bb->run();
```

**For WackoWiki:**
```php
require 'vendor/autoload.php';

use BadBehaviour\Core\BadBehaviour;
use BadBehaviour\Core\Adapter\WackoWikiAdapter;

// Assuming $db is instantiated WackoWiki DB layer
$adapter = new WackoWikiAdapter($db);
$bb = new BadBehaviour($adapter);
$bb->run();
```

### Option 2: Legacy Drop-In Usage

If you maintain an existing site and simply wish to upgrade from 2.2.x without refactoring your integration, the legacy entry points continue to function exactly as before. They now act as forwarding shims over the new OOP architecture internally.

1. Upload the `badbehaviour` directory to your project.
2. Include the legacy bootstrap file as you always have:
   * MediaWiki: `include( './extensions/Bad-Behaviour/bad-behaviour-mediawiki.php' );`
   * Generic: `require_once 'bad-behaviour-generic.php';`

---

## Screenshots

1. Most of the time, only spammers see this. In the rare event a human
winds up here, a way out is provided. This may involve removing malicious
software from the user's computer, changing firewall settings or other simple
fixes which will immediately grant access again.

2. Bad Behaviour's built in log viewer (WordPress) shows why requests were
blocked and allows you to click on any IP address, user-agent string or block
reason to filter results.

---

## Release Notes

### Bad Behaviour 2.3.0

* **Breaking Change:** If you previously overrode Bad Behaviour by defining custom `bb2_read_whitelist()` or `bb2_read_settings()` functions in the global namespace, these are no longer called by the core. You must implement `HostAdapterInterface` and pass it to the `BadBehaviour` constructor.
* `bb2_banned()` no longer hard-calls `die()`. It gracefully returns (or prints the 403 page) so the host application can handle script termination. To restore old behavior, call `die()` on a truthy return from `$bb->run()`.

### Bad Behaviour 2.2 Known Issues

* Bad Behaviour requires MySQL 8.0 or later and PHP 8.0 or later.

* CloudFlare users must enable the Reverse Proxy option in Bad Behaviour's
settings. See the documentation for further details.

* Bad Behaviour is unable to protect internally cached pages on MediaWiki.
Only form submissions will be protected.

* On WordPress when using WP-Super Cache, Bad Behaviour must be enabled in
WP-Super Cache's configuration in order to protect PHP Cached or Legacy
Cached pages. Bad Behaviour cannot protect mod_rewrite cached (Super Cached)
pages.

--- 

For complete documentation and installation instructions, please visit
[User Guide](https://github.com/Bad-Behaviour/badbehaviour/wiki)