The original author has deleted the package, but it was used in local project.

NucleosAntiSpamBundle

This bundle provides some basic features to reduce spam in Symfony. It is the successor of core23/antispam-bundle, but not related to isometriks/spam-bundle.

Features

Honeypot protection for forms: An additional "hidden" (i.e. made invisible with CSS) field will be added to your form. Whoever fills out this field, is considered to be a spam bot.
Time protection for forms: The time between displaying the form and submitting the form is measured. Anybody who submits the form quicker than a certain number of seconds, is considered to be a spam bot. The timestamp is stored in the session.
Email address obfuscation filter for Twig: To prevent spam harvest bots from detecting your email address, they are obfuscated by e.g. replacing @ with [AT]. The filter will find email addresses automatically, so you can apply it to your entire text.

Installation

Open a command console, enter your project directory and execute the following command to download the latest stable version of this bundle:

composer require alexsabur/antispam-bundle

Enable the Bundle

In older versions of Symfony, you need to enable it manually:

// config/bundles.php

return [
    // ...
    Nucleos\AntiSpamBundle\NucleosAntiSpamBundle::class => ['all' => true],
];

Usage

Form based protection

In a controller:

$this->createForm(CustomFormType:class, null, [
    // Time protection
    'antispam_time'     => true,
    'antispam_time_min' => 10, // seconds
    'antispam_time_max' => 60,

    // Honeypot protection
    'antispam_honeypot'       => true,
    'antispam_honeypot_class' => 'hide-me',
    'antispam_honeypot_field' => 'email-repeat',
])

In a form class:

class MyType extends AbstractType
{
    // ...

    public function configureOptions(OptionsResolver $resolver): void
    {
        $resolver->setDefaults([
            // ...
            'antispam_time'     => true,
            'antispam_time_min' => 10,
            // same as above
        ]);
    }
}

Twig email address obfuscation

The Twig filter antispam replaces @ by e.g. [AT].

{# Replace plain text #}
{{ text|antispam }}

{# Replace rich text mails #}
{{ htmlText|antispam(true) }}

If you want a JavaScript decoding for the encoded email addresses, you should use the AntiSpam.js library:

document.addEventListener('DOMContentLoaded', () => {
  new AntiSpam('.custom_class');
});

It is recommended to use webpack / webpack-encore to include the JavaScript library in your page. This file is located in the assets folder.

Configure the Bundle

Create a configuration file called nucleos_antispam.yaml:

# config/packages/nucleos_antispam.yaml

nucleos_antispam:
    # Twig mail filter
    twig:
        mail:
            css_class: 'custom_class'
            at_text:   [ '[AT]', '(AT)', '[ÄT]' ]
            dot_text:  [ '[DOT]', '(DOT)', '[.]' ]

    # Time protection
    time:
        min: 5
        max: 3600
        global: true # This will add antispam to all forms

    # Honeypot protection
    honeypot:
        field: 'email_address'
        class: 'hidden'
        global: false
        provider: 'nucleos_antispam.provider.session'

License

This bundle is under the MIT license.

Antispam Bundle Laravel Package