• From: Colombia
  • Registered: 2008-02-26
  • Posts: 10

Topic: Captcha

hi...  how can i make a captcha using Xajax...?

thanks in advance...

  • Registered: 2008-05-31
  • Posts: 17

Re: Captcha

I'm having the same problem. It won't show up because its a script.

  • CtC
  • Administrator
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  • From: Ohio, USA
  • Registered: 2006-07-14
  • Posts: 1,827

Re: Captcha

Can you provide some details?  I'm sure there is a way to accomplish the task, but we need to know more about what you've tried and the error or issue you've experienced.

Thanks

// Joe

xajax Developer
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http://www.linkedin.com/in/calledtoconstruct

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  • From: Boise, Idaho, USA
  • Registered: 2006-04-28
  • Posts: 1,045

Re: Captcha

ebrand,

I have been experimenting with an open source captcha tool named securimage and it seems to work just fine with XAJAX.

Here's some sample code:

Code: PHP

<?php

/*

    Simple CAPTCHA using securimage from

    http://www.phpcaptcha.org/

*/

ob_start();

session_start(); //Must run a session for securimage to function...

require_once("xajax/xajax_core/xajax.inc.php");

$xajax = new xajax();                                                    

require_once("securimage/securimage.php");

$securimage= new Securimage(); //Instance sht securimage object.



function test($dta)

{

    global $securimage;

    $resp=new xajaxResponse();    

        extract($dta);

    //Validate the user's entered security code.

    if ($securimage->check($captcha_code) === false)

      $resp->alert("You entered the wrong security code.");

    else

      $resp->alert("You entered the correct security code.");



    return $resp;

}

//$xajax->setflag('debug', true);  //Uncomment to turn on xajax debugging.

$xajax->register(XAJAX_FUNCTION,"test");

$xajax->processRequest();

?>

<html>

<head>

<? $xajax->printJavascript('xajax'); ?>

<title>test</title>

<style>

label{

    font-weight: bold;

    width: 150px;

    text-align: right;

}

</style>

</head>

<body>

<center>

<form id="form1" onsubmit="xajax_test(xajax.getFormValues('form1')); return false;">

<!-- Generate the captcha image via securimage -->

<img id="captcha" src="securimage/securimage_show.php" alt="CAPTCHA"/><br/>

<!-- The input where the user enters the displayed code -->

<input type="text" id="captcha_code" name="captcha_code" size="10" maxlength="6"/><br/>

<input type="button" value="submit" onclick="xajax_test(xajax.getFormValues('form1')); return false;"/>

</form>

</center>

</body>

</html>

 

See if this fits your need.

Ed

If you ever stop learning you may as well dig a hole, crawl in and pull the top over yourself.
  • CtC
  • Administrator
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  • From: Ohio, USA
  • Registered: 2006-07-14
  • Posts: 1,827

Re: Captcha

Ed,

Nice!  Thanks for sharing that code sample.

xajax Developer
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  • From: Bolivia
  • Registered: 2009-06-03
  • Posts: 25

Re: Captcha

Sorry but I have the same problem, which is running which shows the security code.
Which shows the security code is: securimage / securimage_show.php, that it is:

Code: PHP

<?php

  $ancho=100;

  $alto=30;

  $imagen=imageCreate($ancho,$alto);

  $amarillo=ImageColorAllocate($imagen,226,226,226);

  ImageFill($imagen,0,0,$amarillo);

  $rojo=ImageColorAllocate($imagen,255,0,0);

  //Variables

  $DesdeLetra = "A";

  $HastaLetra = "Z";

  $DesdeNumero = 1000;

  $HastaNumero = 9999;



  $letraAleatoria1 = chr(rand(ord($DesdeLetra), ord($HastaLetra)));

  $letraAleatoria2 = chr(rand(ord($DesdeLetra), ord($HastaLetra)));

  $letraAleatoria3 = chr(rand(ord($DesdeLetra), ord($HastaLetra)));

  $numeroAleatorio = rand($DesdeNumero, $HastaNumero);



  //$valoraleatorio=rand(100000,999999);

  $valoraleatorio=$letraAleatoria1.$letraAleatoria2.$letraAleatoria3.$numeroAleatorio;

  //$valoraleatorio=rand(100000,999999);

  session_start();

  $_SESSION['numeroaleatorio']=$valoraleatorio;

  ImageString($imagen,5,25,5,$valoraleatorio,$rojo);

  for($c=0;$c<=5;$c++)

  {

    $x1=rand(0,$ancho);

    $y1=rand(0,$alto);

    $x2=rand(0,$ancho);

    $y2=rand(0,$alto);

    ImageLine($imagen,$x1,$y1,$x2,$y2,$rojo);

  }

   //global $imagen;

   Header ("Content-type: image/jpeg");

   ImageJPEG ($imagen);

   ImageDestroy($imagen);

?>

 

But what is the code:
require_once ( "securimage / securimage.php");
Get the picture session, is the only way?
I was thinking about this solution. But I do not work.

Code: PHP

<?php

$valor=$_SESSION['numeroaleatorio'];

class Securimage{

    var $codigo;

    public function __construct(){

        global $valor;

        return $this->codigo=$valor;

    }

}

?>

 

I do not want to be in doubt please.
how would the script of "securimage.php"

And in the "single source" (the ED) would take the value in this way?

Code: PHP

require_once("securimage.php");

$securimage= new Securimage(); //Instance sht securimage object.

$securimage->codigo;

 

Last edited by luismarcelo (2009-07-16 3:32:41 AM)

  • Registered: 2010-03-09
  • Posts: 1

Re: Captcha

a simple sample here...

Code: PHP

**using xajax 0.5 and smarty******

********global.php, include this file first**********

/**

 *

 */

function Render() {

    if (array_key_exists('xjxfun', $_GET)) {

        return;

    }

    if (function_exists('Action' . $_GET['action'])) {

        $mAction = 'Action' . $_GET['action'];

        unset($_GET['action']);

        $mParams = array ();

        foreach ($_GET as $mValue) {

            $mParams[] = $mValue;

        }

        call_user_func_array($mAction, $mParams);

    }

    else {

        ActionDefault();

    }

}



*************index.php****************



/**

 *

 */

function ActionDefault() {

    //....other code

    //processing login form.

    TApp::getXajax()->registerFunction('XajaxDraw');

    TApp::getXajax()->registerFunction('XajaxCheckCaptcha');

    TApp::getXajax()->processRequest();

   

    $mSmarty = new TBiddingSmarty(TApp::getSettings());

    $mSmarty->assign('AjaxScript', TApp::getXajax()->printJavascript());

    $mSmarty->display('index.html');

}





/**

 * @return    xajaxResponse

 */

function XajaxDraw() {

    $mRes = new xajaxResponse();

    $mCaptchaCode = chr(mt_rand(65, 90));

    $mCaptchaCode .= chr(mt_rand(65, 90));

    $mCaptchaCode .= chr(mt_rand(65, 90));

    $mCaptchaCode .= chr(mt_rand(65, 90));

    $mCaptcha = 'Captcha.php?action=Draw&Code=' . $mCaptchaCode;

    $mRes->assign('CaptchaImage', 'src', $mCaptcha);

    $mRes->assign('CaptchaHidden', 'value', $mCaptchaCode);

    return $mRes;

}





/**

 * @param    array            $Args

 * @return    xajaxResponse

 */

function XajaxCheckCaptcha($Args) {

    $mRes = new xajaxResponse();

    if ($Args[0] == $Args[1]) {

        $mRes->script('document.LogInForm.submit();');

    }

    else {

        $mRes->assign('LogInStateLi', 'style.visibility', 'visible');

        $mRes->assign('LogInStateLi', 'innerHTML', 'Wrong captacha!');

    }

    return $mRes;

}



Render();



***************Captcha.php***********

/**

 *

 * @param    string    $Code

 */

function ActionDraw($Code) {

    header("Content-type: image/GIF");

    $mCaptcha = imagecreate(67, 24);

    $mBgColor = imagecolorallocate($mCaptcha, 245, 245, 245);

    imagefill($mCaptcha, 0, 0, $mBgColor);

   

    for($i = 0; $i < 4; ++$i) {

        $mColor = imagecolorallocate($mCaptcha, rand(100, 255), rand(0, 100), rand(100, 255));

        imagestring($mCaptcha, 5, 13 + $i * 11, 5, $Code[$i], $mColor);

    }

    for($i = 0; $i < 100; ++$i) {

        $mOtherColor = imagecolorallocate($mCaptcha, rand(0, 255), rand(0, 255), rand(0, 255));

        imagesetpixel($mCaptcha, rand() % 70, rand() % 30, $mOtherColor);

    }



    imagegif($mCaptcha);

    imagedestroy($mCaptcha);

}



/**

 *

 */

function ActionDefault() {

   Redirect('index.php');

}



Render();