Version 3.4.5
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<?php
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/**
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* The KeyCAPTCHA server URL's
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*/
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if ( !class_exists('KeyCAPTCHA_CLASS') )
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{
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class KeyCAPTCHA_CLASS
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{
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private $c_kc_keyword = "accept";
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private $p_kc_visitor_ip = "";
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private $p_kc_session_id = "";
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private $p_kc_web_server_sign = "";
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private $p_kc_web_server_sign2 = "";
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private $p_kc_js_code = "";
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private $p_kc_private_key = "";
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private $p_kc_userID = 0;
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public function get_web_server_sign($use_visitor_ip = 0)
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{
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return md5($this->p_kc_session_id . (($use_visitor_ip) ? ($this->p_kc_visitor_ip) :("")) . $this->p_kc_private_key);
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}
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function __construct($a_private_key='')
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{
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if ( $a_private_key != '' ) {
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$set = explode("0",trim($a_private_key),2);
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if (sizeof($set)>1){
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$this->p_kc_private_key = trim($set[0]);
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$this->p_kc_userID = (int)$set[1];
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$this->p_kc_js_code =
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"<!-- KeyCAPTCHA code (www.keycaptcha.com)-->
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<script type=\"text/javascript\">
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var s_s_c_user_id = '".$this->p_kc_userID."';
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var s_s_c_session_id = '#KC_SESSION_ID#';
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var s_s_c_captcha_field_id = 'capcode';
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var s_s_c_submit_button_id = 'submit,Submit';
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var s_s_c_web_server_sign = '#KC_WSIGN#';
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var s_s_c_web_server_sign2 = '#KC_WSIGN2#';
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</script>
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<script type=\"text/javascript\" src=\"http://backs.keycaptcha.com/swfs/cap.js\"></script>
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<!-- end of KeyCAPTCHA code-->";
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}
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}
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$this->p_kc_session_id = uniqid() . '-1.0.0.033';
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$this->p_kc_visitor_ip = $_SERVER["REMOTE_ADDR"];
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}
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function http_get($path)
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{
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$arr = parse_url($path);
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$host = $arr['host'];
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$page = $arr['path'];
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if ( $page=='' ) {
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$page='/';
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}
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if ( isset( $arr['query'] ) ) {
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$page.='?'.$arr['query'];
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}
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$errno = 0;
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$errstr = '';
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$fp = fsockopen ($host, 80, $errno, $errstr, 30);
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if (!$fp){ return ""; }
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$request = "GET $page HTTP/1.0\r\n";
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$request .= "Host: $host\r\n";
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$request .= "Connection: close\r\n";
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$request .= "Cache-Control: no-store, no-cache\r\n";
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$request .= "Pragma: no-cache\r\n";
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$request .= "User-Agent: KeyCAPTCHA\r\n";
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$request .= "\r\n";
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fwrite ($fp,$request);
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$out = '';
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while (!feof($fp)) $out .= fgets($fp, 250);
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fclose($fp);
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$ov = explode("close\r\n\r\n", $out);
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return $ov[1];
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}
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public function check_result($response)
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{
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$kc_vars = explode("|", $response);
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if ( count( $kc_vars ) < 4 )
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{
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return false;
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}
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if ($kc_vars[0] == md5($this->c_kc_keyword . $kc_vars[1] . $this->p_kc_private_key . $kc_vars[2]))
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{
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if (stripos($kc_vars[2], "http://") !== 0)
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{
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$kc_current_time = time();
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$kc_var_time = split('[/ :]', $kc_vars[2]);
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$kc_submit_time = gmmktime($kc_var_time[3], $kc_var_time[4], $kc_var_time[5], $kc_var_time[1], $kc_var_time[2], $kc_var_time[0]);
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if (($kc_current_time - $kc_submit_time) < 15)
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{
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return true;
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}
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}
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else
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{
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if ($this->http_get($kc_vars[2]) == "1")
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{
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return true;
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}
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}
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}
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return false;
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}
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public function render_js ()
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{
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if ( isset($_SERVER['HTTPS']) && ( $_SERVER['HTTPS'] == 'on' ) )
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{
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$this->p_kc_js_code = str_replace ("http://","https://", $this->p_kc_js_code);
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}
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$this->p_kc_js_code = str_replace ("#KC_SESSION_ID#", $this->p_kc_session_id, $this->p_kc_js_code);
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$this->p_kc_js_code = str_replace ("#KC_WSIGN#", $this->get_web_server_sign(1), $this->p_kc_js_code);
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$this->p_kc_js_code = str_replace ("#KC_WSIGN2#", $this->get_web_server_sign(), $this->p_kc_js_code);
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return $this->p_kc_js_code;
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}
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}
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}
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class captchaPlugin
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{
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/**
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* Registry object
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*
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* @access protected
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* @var object
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*/
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public $registry;
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/**
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* Database object
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*
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* @access protected
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* @var object
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*/
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public $DB;
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/**
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* Settings object
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*
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* @access protected
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* @var object
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*/
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public $settings;
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/**
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* Request object
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*
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* @access protected
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* @var object
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*/
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public $request;
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/**
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* Language object
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*
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* @access protected
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* @var object
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*/
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public $lang;
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/**
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* Member object
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*
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* @access protected
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* @var object
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*/
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public $member;
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/**
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* Member data object
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*
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* @access protected
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* @var object
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*/
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public $memberData;
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/**
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* Error code from KeyCAPTCHA
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*
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* @access protected
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* @var string
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*/
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public $error;
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/**
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* Constructor
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*
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* @access public
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* @param object Registry Object
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* @return void
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*/
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public function __construct( ipsRegistry $registry )
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{
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$this->registry = $registry;
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$this->DB = $this->registry->DB();
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$this->settings =& $this->registry->fetchSettings();
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$this->request =& $this->registry->fetchRequest();
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$this->lang = $this->registry->getClass('class_localization');
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$this->member = $this->registry->member();
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$this->memberData =& $this->registry->member()->fetchMemberData();
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}
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/**
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* Gets the challenge HTML (javascript and non-javascript version).
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* This is called from the browser, and the resulting KeyCAPTCHA HTML widget
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* is embedded within the HTML form it was called from.
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*
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* @access public
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* @return string Form HTML to display
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*/
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public function getTemplate()
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{
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$private_key = $this->settings['keycaptcha_privatekey'];
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if ( ! $private_key )
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{
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return '';
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}
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$kc_o = new KeyCAPTCHA_CLASS($private_key );
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return $this->registry->output->getTemplate('global_other')->captchaKeycaptcha( '<input type="hidden" id="capcode" name="capcode">'.$kc_o->render_js() );
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}
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/**
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* Validate the input code
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*
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* @access public
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* @return boolean Validation successful
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* @since 1.0
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*/
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public function validate()
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{
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$private_key = $this->settings['keycaptcha_privatekey'];
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if ( ! $private_key )
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{
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return '';
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}
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$capcode = $_REQUEST['capcode'];
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$kc_o = new KeyCAPTCHA_CLASS( $private_key );
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if (! $kc_o->check_result($capcode) ) {
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return false;
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}
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return true;
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}
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}
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