README

TYPO3 extension bw_captcha

This extension adds a captcha element for the TYPO3 form component. The captcha generation uses Gregwar/Captcha, no Google or 3rd party includes.

Install

Composer

composer require blueways/bw-captcha

TER

Download the zip file from TYPO3 extension repository (TER).

Usage

Add the captcha element via Form Editor to your form or directly to your yaml form.

Via Form Editor

Or manual configuration

renderables:
    -   type: Captcha
        identifier: captcha
        label: Captcha
        properties:
        fluidAdditionalAttributes:
            required: required
            autocomplete: 'off'

Configuration

Via Site Set (recommended)

Include the site set blueways/bw-captcha in your site configuration.

To modify the captcha output, use the site settings module and adjust the settings in the "Accessible Form Captcha" section.

Via TypoScript

Alternatively, include the static TypoScript template or include setup and constants manually.

To modify the captcha output, you can use the following TypoScript constants:

plugin.tx_bwcaptcha {
    settings {
        # Show reload button
        refreshButton =

        # Show audio button for speech output
        audioButton =

        # The length of the captcha
        length =

        # The charset of the captcha
        charset =

        # The width of the image
        width =

        # The height of the image
        height =

        # Custom font file(s) to use (comma-separated)
        fontFiles =

        # Text color (e.g. 255,0,0)
        textColor =

        # Line color (e.g. 0,0,0)
        lineColor =

        # Background color (e.g. 255,255,255)
        backgroundColor =

        # Distortion
        distortion =

        # The maximum number of lines to draw in front of
        maxFrontLines =

        # The maximum number of lines to draw behind
        maxBehindLines =

        # The maximum angle of char
        maxAngle =

        # The maximum offset of char
        maxOffset =

        # Is the interpolation enabled?
        interpolation =

        # Ignore all effects
        ignoreAllEffects =
    }
}

Usage in other Extensions

sf_event_mgt

To use the captcha element in the sf_event_mgt extension, you need to include the captcha partial in your custom event Registration template and activate the sfEventMgt feature in the extension settings:

<f:form>
    ...
+  <f:render partial="Registration/Captcha/BwCaptcha.html" arguments="{_all}" />
</f:form>

$GLOBALS['TYPO3_CONF_VARS']['EXTENSIONS']['bw_captcha']['sfEventMgt'] = 1;

Overriding the captcha element

To override the captcha partial, copy it to your extension and add the partial path to your form setup:

TYPO3:
    CMS:
        Form:
        prototypes:
            standard:
            formElementsDefinition:
                Form:
                renderingOptions:
                    partialRootPaths:
                    1680889288: 'EXT:your_ext/Resources/Private/Frontend/Partials/'

Migration from version 4.x to 5.x

In this version the inline JavaScript has been moved to a separate file to better comply with a Content Security Policy (CSP). If you dynamically load or display the captcha element, you probably need to initialize the captcha manually:

window.BwCaptcha.init();

Make sure the JavaScript file is included in your page: EXT:bw_captcha/Resources/Public/JavaScript/Frontend/Captcha.js

Migration from version 3.x to 4.x

This version aims to make solving the captcha more accessible. It introduces a new audio feature that reads out the current captcha code. Missing ARIA properties have been added.

• Check out the new captcha partial
• Audio button is enabled by default (can be disabled via plugin.tx_bwcaptcha.settings.audioButton)

Migration from version 2.x to 3.x

The generation of the captcha moved to a middleware, which solves a lot of caching issues. Therefore, adjustments to the form element partial have been made. If you've modified the partial, you need to update the image tag and refresh button link.

tl;dr:

• Check out the new captcha partial
• Reload button is enabled by default (can be disabled via plugin.tx_bwcaptcha.settings.refreshButton)
• You can re-enable the page cache, if disabled it because of this element

Troubleshooting

Refresh button not working

If your site is configured to use trailing slashes, the refresh url cannot be resolved. A simple fix is to add a setting for the pageType 3413, e.g.:

routeEnhancers:
    PageTypeSuffix:
        type: PageType
        default: /
        index: index
        map:
            /: 0
            .captcha: 3413
            .audio: 3414

License

This project is licensed under GNU General Public License 2.0 (or later).

Contribute

This extension was made by Maik Schneider: Feel free to contribute!

Thanks to blueways and XIMA!