recaptcha_server = (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on') ? $this->recaptcha_server_secure : $this->recaptcha_server; } function init($type) { global $config, $db, $user; $user->add_lang('captcha_recaptcha'); parent::init($type); $this->challenge = request_var('recaptcha_challenge_field', ''); $this->response = request_var('recaptcha_response_field', ''); } function &get_instance() { $instance =& new phpbb_recaptcha(); return $instance; } function is_available() { global $config, $user; $user->add_lang('captcha_recaptcha'); return (isset($config['recaptcha_pubkey']) && !empty($config['recaptcha_pubkey'])); } /** * API function */ function has_config() { return true; } function get_name() { return 'CAPTCHA_RECAPTCHA'; } function get_class_name() { return 'phpbb_recaptcha'; } function acp_page($id, &$module) { global $config, $db, $template, $user; $captcha_vars = array( 'recaptcha_pubkey' => 'RECAPTCHA_PUBKEY', 'recaptcha_privkey' => 'RECAPTCHA_PRIVKEY', ); $module->tpl_name = 'captcha_recaptcha_acp'; $module->page_title = 'ACP_VC_SETTINGS'; $form_key = 'acp_captcha'; add_form_key($form_key); $submit = request_var('submit', ''); if ($submit && check_form_key($form_key)) { $captcha_vars = array_keys($captcha_vars); foreach ($captcha_vars as $captcha_var) { $value = request_var($captcha_var, ''); if ($value) { set_config($captcha_var, $value); } } add_log('admin', 'LOG_CONFIG_VISUAL'); trigger_error($user->lang['CONFIG_UPDATED'] . adm_back_link($module->u_action)); } else if ($submit) { trigger_error($user->lang['FORM_INVALID'] . adm_back_link($module->u_action)); } else { foreach ($captcha_vars as $captcha_var => $template_var) { $var = (isset($_REQUEST[$captcha_var])) ? request_var($captcha_var, '') : ((isset($config[$captcha_var])) ? $config[$captcha_var] : ''); $template->assign_var($template_var, $var); } $template->assign_vars(array( 'CAPTCHA_PREVIEW' => $this->get_demo_template($id), 'CAPTCHA_NAME' => $this->get_class_name(), 'U_ACTION' => $module->u_action, )); } } // not needed function execute_demo() { } // not needed function execute() { } function get_template() { global $config, $user, $template; if ($this->is_solved()) { return false; } else { $explain = $user->lang(($this->type != CONFIRM_POST) ? 'CONFIRM_EXPLAIN' : 'POST_CONFIRM_EXPLAIN', '', ''); $template->assign_vars(array( 'RECAPTCHA_SERVER' => $this->recaptcha_server, 'RECAPTCHA_PUBKEY' => isset($config['recaptcha_pubkey']) ? $config['recaptcha_pubkey'] : '', 'RECAPTCHA_ERRORGET' => '', 'S_RECAPTCHA_AVAILABLE' => $this->is_available(), 'S_CONFIRM_CODE' => true, 'S_TYPE' => $this->type, 'L_CONFIRM_EXPLAIN' => $explain, )); return 'captcha_recaptcha.html'; } } function get_demo_template($id) { return $this->get_template(); } function get_hidden_fields() { $hidden_fields = array(); // this is required for posting.php - otherwise we would forget about the captcha being already solved if ($this->solved) { $hidden_fields['confirm_code'] = $this->code; } $hidden_fields['confirm_id'] = $this->confirm_id; return $hidden_fields; } function uninstall() { $this->garbage_collect(0); } function install() { return; } function validate() { if (!parent::validate()) { return false; } else { return $this->recaptcha_check_answer(); } } // Code from here on is based on recaptchalib.php /* * This is a PHP library that handles calling reCAPTCHA. * - Documentation and latest version * http://recaptcha.net/plugins/php/ * - Get a reCAPTCHA API Key * http://recaptcha.net/api/getkey * - Discussion group * http://groups.google.com/group/recaptcha * * Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net * AUTHORS: * Mike Crawford * Ben Maurer * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN * THE SOFTWARE. */ /** * Submits an HTTP POST to a reCAPTCHA server * @param string $host * @param string $path * @param array $data * @param int port * @return array response */ function _recaptcha_http_post($host, $path, $data, $port = 80) { $req = $this->_recaptcha_qsencode ($data); $http_request = "POST $path HTTP/1.0\r\n"; $http_request .= "Host: $host\r\n"; $http_request .= "Content-Type: application/x-www-form-urlencoded;\r\n"; $http_request .= "Content-Length: " . strlen($req) . "\r\n"; $http_request .= "User-Agent: reCAPTCHA/PHP/phpBB\r\n"; $http_request .= "\r\n"; $http_request .= $req; $response = ''; if (false == ($fs = @fsockopen($host, $port, $errno, $errstr, 10))) { trigger_error('Could not open socket', E_USER_ERROR); } fwrite($fs, $http_request); while (!feof($fs)) { // One TCP-IP packet $response .= fgets($fs, 1160); } fclose($fs); $response = explode("\r\n\r\n", $response, 2); return $response; } /** * Calls an HTTP POST function to verify if the user's guess was correct * @param array $extra_params an array of extra variables to post to the server * @return ReCaptchaResponse */ function recaptcha_check_answer($extra_params = array()) { global $config, $user; //discard spam submissions if ($this->challenge == null || strlen($this->challenge) == 0 || $this->response == null || strlen($this->response) == 0) { return $user->lang['RECAPTCHA_INCORRECT']; } $response = $this->_recaptcha_http_post($this->recaptcha_verify_server, $this->recaptcha_verify_path, array( 'privatekey' => $config['recaptcha_privkey'], 'remoteip' => $user->ip, 'challenge' => $this->challenge, 'response' => $this->response ) + $extra_params ); $answers = explode("\n", $response[1]); if (trim($answers[0]) === 'true') { $this->solved = true; return false; } else { return $user->lang['RECAPTCHA_INCORRECT']; } } /** * Encodes the given data into a query string format * @param $data - array of string elements to be encoded * @return string - encoded request */ function _recaptcha_qsencode($data) { $req = ''; foreach ($data as $key => $value) { $req .= $key . '=' . urlencode(stripslashes($value)) . '&'; } // Cut the last '&' $req = substr($req, 0, strlen($req) - 1); return $req; } } ?>