captcha-extended

CaptchaExtended enhances original captcha delivered with framework by implementing logical phrases and visual elements.

Captcha Extended enhances original captcha implementation supplied with the framework by adding more visual masking techniques and implementing logical phrases that are harder to break by spammers.

Features ¶

supports modes: logical, words, mathverbal, math, default
supports extended characters latin1, latin2 (utf-8) including middle- east- European and cyrillic characters
implements masking elements: dots density, through lines, fillSections, font color varying
ignorant to whitespaces
supports case sensitivity / insensitivity even for non-latin1 characters for client side validation

Demo ¶

Try out a demo

Screenshot

Requirements ¶

This extension will run right out of the box on Yii 1.1.7+ However, with minor tweaks you can run it on any previous version (uses $classmap and enableClientValidation introduced in 1.1.7, you can replace class registration e.g. with importing whole directory, which however is less performance wise).

Installation and usage ¶

1) Unzip CaptchaExtended.zip files into ../protected/extensions/captchaExtended/.

2) Register class paths to CaptchaExtendedAction and CaptchaExtendedValidator, e.g. in components/controller.php:

public function init(){
        // register class paths for extension captcha extended
        Yii::$classMap = array_merge( Yii::$classMap, array(
            'CaptchaExtendedAction' => Yii::getPathOfAlias('ext.captchaExtended').DIRECTORY_SEPARATOR.'CaptchaExtendedAction.php',
            'CaptchaExtendedValidator' => Yii::getPathOfAlias('ext.captchaExtended').DIRECTORY_SEPARATOR.'CaptchaExtendedValidator.php'
        ));
    }

3) Define action in controller, e.g. SiteController:

public function actions(){
        return array(
            'captcha'=>array(
                'class'=>'CaptchaExtendedAction',
            ),
        );
    }

4) Define client validation in model::rules():

public function rules(){
        return array(
            array('verifyCode', 'CaptchaExtendedValidator', 'allowEmpty'=>!CCaptcha::checkRequirements()),
        );
    }

5) If needed, collect localized strings via CLI command "yiic message messages/config.php" and translate captcha related strings.

6) If needed, you can tune captcha modes and visibility options:

In "words" mode, you can place your own file [words.txt] or [words.yourlanguage.txt]
If needed, you can ..
- set the dots density [0-100]
- the number of through lines 0, 1, 2, ..
- the number of fillSections 0, 1, 2, ..
- font and background colors

7) Test & enjoy!

Total 14 comments

#6842

edeis at 2012/02/09 12:34am

Intergration with Yii-user module

I've got Captcha extended working on my forms on my site. However, I can for the life of me get it to work with Yii-User module. The model won't validate!

Has anyone done this succesfully?

#6358

lubosdz at 2012/01/02 04:47pm

Switched to BSD license

OK, switched to BSD license.

#6356

Backslider at 2012/01/02 03:15pm

BSD License please

Yii is licensed BSD - extensions should be the same!

#6031

jackiesun at 2011/12/06 11:40pm

it is good,but if BSD ,that is cool

it is good,but if BSD ,that is cool. good job. thank you

#5946

jellysandwich at 2011/11/28 02:22am

Ajax validation

For those of you who like to use ajax validation in your forms, you can add this at the top of this function:

CaptchaExtendedAction.validate($input,$caseSensitive)

// ensure that code isn't consumed by "enableAjaxValidation"
// "enableclientValidation" can still work, so use that instead
if (Yii::app()->request->isAjaxRequest)
{
    return true;
}

#5382

RomanSolomatin at 2011/10/08 01:26pm

Interesting

Thank you, looks good.

#5116

lubosdz at 2011/09/15 08:39am

How to call it from view / layout file

@Ivashkin: You call it just like normal CCaptcha widget from any view/layout file:

<?php $this->widget('CCaptcha'); ?>

This will look for controller action "captcha" which is defined in array of actions. See step 3 above.

Cheers Lubos

#5113

Ivashkin at 2011/09/15 05:38am

Thanks

how to call in the source, show in example sorry for my bad english

#4954

rohit at 2011/09/01 12:31am

GPL vs LGPL vs BSD

1> GPL --
Open source any application which contains code licensed under GPL. It is a must.
2> LGPL --
You must open source the modifications done on the original library under GPL licence. But, author may add a clause to loosen restrictions on inclusion of his code for other closed source applications.
3> BSD --
Modify, distribute, hack, make it closed source, use it for proprietary application until you give original author his credits for his work.

Correct me if i'm wrong or not clear :)

#4946

lubosdz at 2011/08/31 06:14am

Changed license to LGPL

Hi, licence changed to LGPL. Cheers. Lubos

#4945

joblo at 2011/08/31 05:49am

GPL problem

I'm not an expert in opensource licensing, but I will never use GPL licensed software in my projects.

The problem is, that you (maybe??) can be enforced to 'opensource' all your (own) code if you integrate GPL code and deploy your project.

You can find a lot of discussions about the viral effect of GPL. I don't know if it's really like a virus, but I avoid to integrate GPL code.

If you change the license to LGPL or other, I would use your nice extension :-)

#4942

lubosdz at 2011/08/31 03:59am

why GPL license v3

Hi,

actually I am always confused about licensing. There so many variants, but I do not know detailed differences. But I saw, that BSD license (pre-set, also Yii is distributed under BSD) requires to retain authoring info. I do not want that. Do whatever you want, put your own authoring credentials, modify, copy, distribute, whatever. So I opted for GPL version 3 since I guessed this is more like free license and the version 3 should be most modern and really cool, since it has been updated already 3 times:-)))

But seriously, it would be good to make up summary about the differences betweeen all open source licenses...

If there is better option than GPL v3 I still can change it.

Lubos

#4938

NCS_One at 2011/08/30 08:52pm

Thanks.

Hi,

It looks very good. Thank you very much.

But why GPL license?

#4935

yiqing95 at 2011/08/30 07:32pm

great works！

looks cool; like your extension , it looks more beautiful then the CCapthcha. actually i 'v thought to write my own one , yours look pretty enough .

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