Hi.
I am using a captcha installed by an extension in my site.
The issue is that when enabled, the page goes blank with this error:
Fatal error: Call to a member function display() on a non-object in /homepages/13/d480589583/htdocs/html/components/com_captcha/views/property/view.html.php on line 103
If I deactivate it, there is no problem, but I need the captcha.
The code (with the 103 line in bolds):
protected function displayCaptcha()
{
$plugin = JFactory::getConfig()->get('captcha');
if ($plugin == '0') {
$plugin = 'recaptcha';
}
$captcha = JCaptcha::getInstance($plugin);
[B] return $captcha->display('captcha', 'jea-captcha');[/B]
}
}
And the code in the default contact form php file:
<?php if ($this->params->get('use_captcha')):?>
<dd><?php echo $this->displayCaptcha() ?></dd>
<?php endif ?>
And the recaptcha plugin:
public function onInit($id)
{
$document = JFactory::getDocument();
$app = JFactory::getApplication();
$lang = $this->_getLanguage();
$pubkey = $this->params->get('public_key', '');
$theme = $this->params->get('theme', 'clean');
if ($pubkey == null || $pubkey == '')
{
throw new Exception(JText::_('PLG_RECAPTCHA_ERROR_NO_PUBLIC_KEY'));
}
$server = self::RECAPTCHA_API_SERVER;
if ($app->isSSLConnection())
{
$server = self::RECAPTCHA_API_SECURE_SERVER;
}
JHtml::_('script', $server . '/js/recaptcha_ajax.js');
$document->addScriptDeclaration('window.addEvent(\\'domready\\', function()
{
Recaptcha.create("' . $pubkey . '", "dynamic_recaptcha_1", {theme: "' . $theme . '",' . $lang . 'tabindex: 0});});'
);
return true;
}
/**
* Gets the challenge HTML
*
* @param string $name The name of the field.
* @param string $id The id of the field.
* @param string $class The class of the field.
*
* @return string The HTML to be embedded in the form.
*
* @since 2.5
*/
public function onDisplay($name, $id, $class)
{
return '<div id="dynamic_recaptcha_1"></div>';
}
/**
* Calls an HTTP POST function to verify if the user's guess was correct
*
* @return True if the answer is correct, false otherwise
*
* @since 2.5
*/
public function onCheckAnswer($code)
{
$input = JFactory::getApplication()->input;
$privatekey = $this->params->get('private_key');
$remoteip = $input->server->get('REMOTE_ADDR', '', 'string');
$challenge = $input->get('recaptcha_challenge_field', '', 'string');
$response = $input->get('recaptcha_response_field', '', 'string');
// Check for Private Key
if (empty($privatekey))
{
$this->_subject->setError(JText::_('PLG_RECAPTCHA_ERROR_NO_PRIVATE_KEY'));
return false;
}
// Check for IP
if (empty($remoteip))
{
$this->_subject->setError(JText::_('PLG_RECAPTCHA_ERROR_NO_IP'));
return false;
}
// Discard spam submissions
if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0)
{
$this->_subject->setError(JText::_('PLG_RECAPTCHA_ERROR_EMPTY_SOLUTION'));
return false;
}
$response = $this->_recaptcha_http_post(
self::RECAPTCHA_VERIFY_SERVER, "/verify",
array(
'privatekey' => $privatekey,
'remoteip' => $remoteip,
'challenge' => $challenge,
'response' => $response
)
);
$answers = explode("\
", $response[1]);
if (trim($answers[0]) == 'true')
{
return true;
}
else
{
// @todo use exceptions here
$this->_subject->setError(JText::_('PLG_RECAPTCHA_ERROR_' . strtoupper(str_replace('-', '_', $answers[1]))));
return false;
}
}
/**
* Encodes the given data into a query string format.
*
* @param string $data Array of string elements to be encoded
*
* @return string Encoded request
*
* @since 2.5
*/
private function _recaptcha_qsencode($data)
{
$req = "";
foreach ($data as $key => $value)
{
$req .= $key . '=' . urlencode(stripslashes($value)) . '&';
}
// Cut the last '&'
$req = rtrim($req, '&');
return $req;
}
/**
* Submits an HTTP POST to a reCAPTCHA server.
*
* @param string $host
* @param string $path
* @param array $data
* @param int $port
*
* @return array Response
*
* @since 2.5
*/
private function _recaptcha_http_post($host, $path, $data, $port = 80)
{
$req = $this->_recaptcha_qsencode($data);
$http_request = "POST $path HTTP/1.0\\r\
";
$http_request .= "Host: $host\\r\
";
$http_request .= "Content-Type: application/x-www-form-urlencoded;\\r\
";
$http_request .= "Content-Length: " . strlen($req) . "\\r\
";
$http_request .= "User-Agent: reCAPTCHA/PHP\\r\
";
$http_request .= "\\r\
";
$http_request .= $req;
$response = '';
if (($fs = @fsockopen($host, $port, $errno, $errstr, 10)) == false )
{
die('Could not open socket');
}
fwrite($fs, $http_request);
while (!feof($fs))
{
// One TCP-IP packet
$response .= fgets($fs, 1160);
}
fclose($fs);
$response = explode("\\r\
\\r\
", $response, 2);
return $response;
}
/**
* Get the language tag or a custom translation
*
* @return string
*
* @since 2.5
*/
private function _getLanguage()
{
$language = JFactory::getLanguage();
$tag = explode('-', $language->getTag());
$tag = $tag[0];
$available = array('en', 'pt', 'fr', 'de', 'nl', 'ru', 'es', 'tr');
if (in_array($tag, $available))
{
return "lang : '" . $tag . "',";
}
// If the default language is not available, let's search for a custom translation
if ($language->hasKey('PLG_RECAPTCHA_CUSTOM_LANG'))
{
$custom[] = 'custom_translations : {';
$custom[] = "\ " . 'instructions_visual : "' . JText::_('PLG_RECAPTCHA_INSTRUCTIONS_VISUAL') . '",';
$custom[] = "\ " . 'instructions_audio : "' . JText::_('PLG_RECAPTCHA_INSTRUCTIONS_AUDIO') . '",';
$custom[] = "\ " . 'play_again : "' . JText::_('PLG_RECAPTCHA_PLAY_AGAIN') . '",';
$custom[] = "\ " . 'cant_hear_this : "' . JText::_('PLG_RECAPTCHA_CANT_HEAR_THIS') . '",';
$custom[] = "\ " . 'visual_challenge : "' . JText::_('PLG_RECAPTCHA_VISUAL_CHALLENGE') . '",';
$custom[] = "\ " . 'audio_challenge : "' . JText::_('PLG_RECAPTCHA_AUDIO_CHALLENGE') . '",';
$custom[] = "\ " . 'refresh_btn : "' . JText::_('PLG_RECAPTCHA_REFRESH_BTN') . '",';
$custom[] = "\ " . 'help_btn : "' . JText::_('PLG_RECAPTCHA_HELP_BTN') . '",';
$custom[] = "\ " . 'incorrect_try_again : "' . JText::_('PLG_RECAPTCHA_INCORRECT_TRY_AGAIN') . '",';
$custom[] = '},';
$custom[] = "lang : '" . $tag . "',";
return implode("\
", $custom);
}
// If nothing helps fall back to english
return '';
}
}
I have no idea where the problem is?
Many thanks for any answer.
