using CAPTCHA

[quartney]

I am trying to integrate the CAPTCHA module into a sign-up form for Newsletter Made Simple.  I have inserted code from the CAPTCHA help tab:

Code: Select all

// create a reference to a Captcha module object
$captcha = &$this->getModuleInstance('Captcha'); 
// show the captcha image
echo $captcha->getCaptcha();

// create a reference to a Captcha module object
$captcha = &$this->getModuleInstance('Captcha');
// check the user input (the checkCaptcha method will return TRUE if $input is correct, FALSE if $input is incorrect)
$validated = $captcha->checkCaptcha($input);

What that does is put a captcha image on the page, but I need help:
1. putting a text box on the page where the captcha image text should be input
2. validating the input (I think)

action.default.php:

Code: Select all

<?
// create a reference to a Captcha module object
$captcha = &$this->getModuleInstance('Captcha'); 
// show the captcha image
echo $captcha->getCaptcha();

// create a reference to a Captcha module object
$captcha = &$this->getModuleInstance('Captcha');
// check the user input (the checkCaptcha method will return TRUE if $input is correct, FALSE if $input is incorrect)
$validated = $captcha->checkCaptcha($input);

    $message = '';
    if( isset($params['message']) )
      {
	$message = $params['message'];
      }
 
    $this->smarty->assign('prompt_email',$this->Lang('emailaddress'));
    $this->smarty->assign('error',$params['error']);
    $this->smarty->assign('submitbtn', 
			  $this->CreateInputSubmit($id, 'submit', 
						   $this->Lang('submit')));
    $template = 'nms_subscribeform';

    $mode = 'subscribe';
    if(isset($params['mode']) && $params['mode'] != '')
      {
	$mode = $params['mode'];
      }

    switch( $mode ) {
    case 'usersettings':
      {
	$this->smarty->assign('error',$params['error']);
	$this->smarty->assign('formstart',
			      $this->CreateFrontendFormStart($id, $returnid, 'usersettings_email' ));
	$this->smarty->assign('formend',$this->CreateFormEnd());
	$this->smarty->assign('email', $this->CreateInputText($id, 'email','',30, 150 ));
	$this->smarty->assign('formhidden', $this->CreateInputHidden($id, 'usersettings'));
	$template = 'usersettings_form';
      }
      break;

    case 'unsubscribe':
      {
	$this->smarty->assign('error',$params['error']);
	$this->smarty->assign('formstart',$this->CreateFrontendFormStart($id, $returnid, 'unsubscribe_email'));
	$this->smarty->assign('formend',$this->CreateFormEnd());
	$this->smarty->assign('email', $this->CreateInputText($id, 'email','',30, 150 ));
	$this->smarty->assign('formhidden', $this->CreateInputHidden($id, 'unsubscribe'));
	$template = 'nms_unsubscribeform';
      }
      break;

    case 'subscribe':
      {
	if( isset( $params['displayform'] ) && $params['displayform'] == 0 )
	  {
	    // nothing
	  }
	else
	  {
	    $lists = "";
	    if( isset( $params['select'] ) && $params['select'] != "" )
	      {
		$ar = explode(",",$params['select']);
		$lists = '("'.implode('","',$ar).'")';
	      }
	    $email = '';
	    if( isset( $params['email'] ) && $params['email'] != "" )
	      {
		$email = $params['email'];
	      }
	    $username = '';
	    if( isset( $params['username'] ) && $params['username'] != "" )
	      {
		$username = $params['username'];
	      }

	    $db = &$this->cms->db;
	    $result = array();
	    $temparray = array();
	
	    $query = "SELECT * FROM ".cms_db_prefix().$this->table_prefix."list 
                       WHERE active = ? 
                         AND public = ?";
	    if( $lists != "" )
	      {
		$query .= " AND name IN ".$lists;
	      }
	    $query .= " ORDER BY listid";

	    $dbresult = $db->Execute($query,array(1,1));
	
	    if ($dbresult && $dbresult->RecordCount() > 0)
	      {
		$oneonly = ($dbresult->RecordCount() == 1);
		while ($row = $dbresult->FetchRow())
		  {
		    $extratext = '';
		    if( $oneonly )
		      {
			$hidden .= $this->CreateInputHidden($id,"lists[]",$row['listid']);
			$extratext = 'checked="checked" disabled="true"';
		      }
		    $temparray[] = "<label>" . 
		      $this->CreateInputCheckbox($id, "lists[]",$row['listid'],"",$extratext).
		      $row['name'] . " - " . $row['description'] . "</label>";
		  }
		$this->smarty->assign('listids',$temparray);
		$this->smarty->assign('formstart',$this->CreateFrontendFormStart($id, $returnid, 'do_create_new_user','post','',true,'',$params));
		$this->smarty->assign('formend',$this->CreateFormEnd());
		$this->smarty->assign('email', $this->CreateInputText($id, 'email',$email,30, 150 ));
		$this->smarty->assign('prompt_username',$this->Lang('name'));
		$this->smarty->assign('username', $this->CreateInputText($id, 'username', $username, 30, 150 ));
		$this->smarty->assign('formhidden', $hidden );
	      }
	    else
	      {
		$message = $this->Lang('nolists');
	      }
	  }
      }
      break;

    default:
      $this->_DisplayErrorPage($id,$params,$returnid,
			       $this->Lang('invalidparam'));
      return;
    }

    // Display the populated template
    $smarty->assign('message',$message);
    echo $this->ProcessTemplateFromDatabase($template);
?>

[Dee]

To enable captcha in NMS-2.2 (requires Captcha-0.3.2 if you use the hn_captcha library):

1. assign smarty variables for the captcha image, prompt text and form input:
In action.default.php line 139 after

Code: Select all

$this->smarty->assign('formhidden', $hidden );

add

Code: Select all

$captcha = &$this->getModuleInstance('Captcha');
if ($captcha) { 
	$this->smarty->assign('captcha', $captcha->GetCaptcha());
	$this->smarty->assign('prompt_captcha', 'Enter the text from the image');
	$this->smarty->assign('captcha_input', $this->CreateInputText($id, 'captcha_input','',30, 50 ));
}

2. add the captcha image, prompt text and input to the template:
In your NMS "Subscribe" template before

Code: Select all

        {$submitbtn}

add

Code: Select all

        {if $captcha ne ""}
	    {$captcha}<br />
            {$prompt_captcha}: {$captcha_input}<br />
        {/if}

3. validate the user input after submit:
In action.do_create_new_user.php on line 77 after

Code: Select all

  if( !isset($params['lists']) || count($params['lists']) == 0 )
    {
      $params['message'] = $this->Lang('error_selectonelist');
      $params['error'] = 1;
      $this->Redirect( $id, $action, $returnid, $params, !$admin );
      return;
    }

add

Code: Select all

if (!$admin) {
  $captcha = &$this->getModuleInstance('Captcha');
  if ($captcha && $captcha->checkCaptcha($params['captcha_input']) != TRUE)
  {
    $params['message'] = 'Captcha error';
    $params['error'] = 1;
    $this->Redirect( $id, $action, $returnid, $params, !$admin );
    return;
  }
}

4. register the captcha_input parameter:
In NMS.module.php on line 385 after     

Code: Select all

$this->SetParameterType('usersettings',CLEAN_STRING);

add

Code: Select all

$this->SetParameterType('captcha_input',CLEAN_STRING);

Regards,
D

[quartney]

D, thank you so much for your reply!  However, it's still not working.  There is not a box on the page for user input:
http://www.winyahrivers.org/newsletter.html

Do you have a suggestion on how to fix that?

thanks again,
Courtney

[quartney]

Sorry!  I misunderstood your directions.  For clarification, in case anyone else needs this information, the instructions above reading:

In your NMS "Subscribe" template before

mean make the changes inside CMS Newsletter Made Simple under the "subscribe" tab ... not in the actual file on the server.

You rock, Dee!!!

[saltydog]

The modification in action_do_create_new_user.php breaks the possibility to manually add a new user from inside the CMS!

[Dee]

The modification in action_do_create_new_user.php breaks the possibility to manually add a new user from inside the CMS!

Replace this line added to action.do_create_new_user.php

Code: Select all

if ($captcha && $captcha->checkCaptcha($params['captcha_input']) != TRUE)

by

Code: Select all

if (!$admin && $captcha && $captcha->checkCaptcha($params['captcha_input']) != TRUE)

(I modified the instructions)

Regards,
D

[saltydog]

very good. Thanks.

[tristan]

Does anyone know if this still works on the latest version of NMS and Captcha or is this already integrated into NMS?

[beattie]

Hi Dee, can the above code be modified to work with News module's form template? so that human users on the front end can submit news articles and not spammers? I use the {news action="fesubmit"} smarty tag extensively in one of my sites and have tried different means to integrate captcha but without success. Would really appreciate your suggestions.