SMF 2 Antispam

This is the antispam system behind ubuntuclub forum. It use keyword blocking and can work alongside existing antispam solutions such as Akismet, CAPTCHA, post throttle.

Developed on SMF 2.0.6

Installation

1. Put /antispam/ directory in your SMF installation such that it could be accessible from http://yoursite/smf/antispam/
2. Edit Sources/Post.php. Add the following codes above // Check the subject and message.

	// whs mod -> antispam
	// not an edit
	if(!isset($_REQUEST['msg'])){
		$q = $smcFunc['db_query']('', '
			SELECT text
			FROM {db_prefix}antispam
		');
		while($bannedText = $smcFunc['db_fetch_assoc']($q)){
			if(mb_stripos($_REQUEST['message'], $bannedText['text']) !== false){
				$post_errors[] = 'whs_antispam';
				break;
			}
			if(mb_stripos($_REQUEST['subject'], $bannedText['text']) !== false){
				$post_errors[] = 'whs_antispam';
				break;
			}
		}
		$smcFunc['db_free_result']($q);
	}

3. Edit Themes/default/languages/Errors.english.php. Add following lines to the end of the file.

$txt['error_whs_antispam'] = 'Post is probably spam. Please rephrase your post.';

4. Load antispam.sql into your database.
5. Enter http://yoursite/smf/antispam/ and add some keywords. Test that it work by posting a topic or reply with blocked keyword in the topic name or message body.

Note

• Does not block keywords in edit. This is intended.
• Use case insensitive, partial word matching.
• Affect administrator & mods to make sure normal users are not getting blocked while only mods can post.

License

This modification is licensed 3-clause BSD license, same as the SMF itself.