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authorHenry Sudhof <kellanved@phpbb.com>2009-06-02 14:12:23 +0000
committerHenry Sudhof <kellanved@phpbb.com>2009-06-02 14:12:23 +0000
commitb776d02682492077a4fafd8835d7c4a17e50762d (patch)
tree0c94c7e662baaaf047f1eace9658bd13fc36b8e3 /phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php
parentb9ece6bdfe65b2e63c42d4a83fd831b4377e1b90 (diff)
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Okay, a first ci of the new captcha plugins. We'll add dynamic template includes later, as well as documentation on how to use this. I'm prepared to get yelled at for bugs (oh, I know that there are plenty); but please blame spammers for broken styles and MODs.
git-svn-id: file:///svn/phpbb/branches/phpBB-3_0_0@9524 89ea8834-ac86-4346-8a33-228a782c2dd0
Diffstat (limited to 'phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php')
-rw-r--r--phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php312
1 files changed, 312 insertions, 0 deletions
diff --git a/phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php b/phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php
new file mode 100644
index 0000000000..7a3c406324
--- /dev/null
+++ b/phpBB/includes/captcha/plugins/phpbb_recaptcha_plugin.php
@@ -0,0 +1,312 @@
+<?
+/**
+*
+* @package VC
+* @version $Id: $
+* @copyright (c) 2006 2008 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License
+*
+*/
+
+/**
+* @ignore
+*/
+if (!defined('IN_PHPBB'))
+{
+ exit;
+}
+
+if (!class_exists('phpbb_default_captcha'))
+{
+ // we need the classic captcha code for tracking solutions and attempts
+ include_once($phpbb_root_path . "includes/captcha/plugins/captcha_abstract." . $phpEx);
+}
+
+class phpbb_recaptcha extends phpbb_default_captcha
+{
+ var $recaptcha_server = 'http://api.recaptcha.net';
+ var $recaptcha_verify_server = 'api-verify.recaptcha.net';
+ var $challenge;
+ var $response;
+
+
+ function init($type)
+ {
+ global $config, $db, $user;
+
+ $user->add_lang('recaptcha');
+ parent::init($type);
+ $this->challenge = request_var('recaptcha_challenge_field', '');
+ $this->response = request_var('recaptcha_response_field', '');
+ }
+
+
+ function get_instance()
+ {
+ return new phpbb_recaptcha();
+ }
+
+ function is_available()
+ {
+ global $config, $user;
+ $user->add_lang('recaptcha');
+ return (isset($config['recaptcha_pubkey']) && !empty($config['recaptcha_pubkey']));
+ }
+
+ function get_name()
+ {
+ return 'CAPTCHA_RECAPTCHA';
+ }
+
+ function get_class_name()
+ {
+ return 'phpbb_recaptcha';
+ }
+
+ function acp_page($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, $value);
+ }
+ }
+ trigger_error($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(),
+ ));
+
+ }
+ }
+
+
+ // not needed
+ function execute_demo()
+ {
+ }
+
+
+ // not needed
+ function execute()
+ {
+ }
+
+
+ function get_template()
+ {
+ global $config, $user, $template;
+
+ $template->set_filenames(array(
+ 'captcha' => 'captcha_recaptcha.html')
+ );
+
+ $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(),
+ ));
+
+ return $template->assign_display('captcha');
+ }
+
+ function get_demo_template($id)
+ {
+ return $this->get_template();
+ }
+
+ function get_hidden_fields()
+ {
+ $hidden_fields = array();
+
+ // this is required for postig.php - otherwise we would forget about the captcha being already solved
+ if ($this->solved)
+ {
+ $hidden_fields['confirm_code'] = $this->confirm_code;
+ }
+ $hidden_fields['confirm_id'] = $this->confirm_id;
+ return $hidden_fields;
+ }
+
+ function uninstall()
+ {
+ self::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, $errstr, 10) ) ) {
+ die ('Could not open socket');
+ }
+
+ fwrite($fs, $http_request);
+
+ while ( !feof($fs) )
+ $response .= fgets($fs, 1160); // One TCP-IP packet
+ 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, "/verify",
+ 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')
+ {
+ $this->solved = true;
+ return false;
+ }
+ else
+ {
+ if ($answers[1] === 'incorrect-captcha-sol')
+ {
+ 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;
+ }
+}
+
generated by cgit v1.2.1 (git 2.21.0) at 2025-03-23 06:11:50 +0000