FGSimpleCaptcha

Complexity

Total Complexity

9

Size/Duplication

Total Lines	77
Duplicated Lines	0 %

Coupling/Cohesion

Components	1
Dependencies	1

Importance

Changes

0

7 Methods

Rating	Name	Duplication	Size	Complexity
A	FGSimpleCaptcha()	0	5	1
A	GetSimpleCaptcha()	0	17	1
A	SetFormKey()	0	4	1
A	GetKey()	0	4	1
A	Validate()	0	29	3
A	Md5CaptchaAnswer()	0	4	1
A	GetError()	0	4	1

<?PHP
/*
    Contact Form from HTML Form Guide

    This program is free software published under the
    terms of the GNU Lesser General Public License.

This program is distributed in the hope that it will
be useful - WITHOUT ANY WARRANTY; without even the
implied warranty of MERCHANTABILITY or FITNESS FOR A
PARTICULAR PURPOSE.

@copyright html-form-guide.com 2010
*/
class FGSimpleCaptcha extends FG_CaptchaHandler
{
    var $error_str;
    var $captcha_varname;
    var $uniquekey;

    function FGSimpleCaptcha($captcha_var_name)
    {
        $this->captcha_varname=$captcha_var_name;
        $this->uniquekey='KHJhsjsy65HGbsmnd';
    }

    /*Add more simple questions here.*/
    function GetSimpleCaptcha()
    {
        $arrQuestions = array(
	elgg_echo('contactform:validator:question1') => elgg_echo('contactform:validator:answer1'),
	elgg_echo('contactform:validator:question2') => elgg_echo('contactform:validator:answer2'),
	elgg_echo('contactform:validator:question3') => elgg_echo('contactform:validator:answer3'),
	elgg_echo('contactform:validator:question4') => elgg_echo('contactform:validator:answer4'),
	elgg_echo('contactform:validator:question5') => elgg_echo('contactform:validator:answer5'),
	);

        $question = array_rand($arrQuestions);
        $answer = $arrQuestions[$question];

        $_SESSION['FGCF_Captcha_Answer'] = $this->Md5CaptchaAnswer($answer);

        return $question;
    }

    function SetFormKey($key)
    {
        $this->uniquekey = $key;
    }
    function GetKey()
    {
        return $this->uniquekey;
    }
    function Validate()
    {
        $ret=false;
        if(empty($_POST[$this->captcha_varname]))
        {
            $this->error_str = elgg_echo('contactform:validator:answer');
            $ret = false;
        }
        else
        {

            $scaptcha = trim($_POST[$this->captcha_varname]);

            $scaptcha = strtolower($scaptcha);

            $user_answer = $this->Md5CaptchaAnswer($scaptcha);

            if($user_answer != $_SESSION['FGCF_Captcha_Answer'])
            {
                $this->error_str = elgg_echo('contactform:validator:failed');
                $ret = false;
            }
            else
            {
                $ret = true;
            }
        }//else
        return $ret;
    }
    function Md5CaptchaAnswer($answer)
    {
        return md5($this->GetKey().$answer);
    }
    function GetError()
    {
        return $this->error_str;
    }
}
?>

It is not recommended to use PHP's closing tag ?> in files other than templates.