--- /dev/null
+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.
--- /dev/null
+StatusNet reCAPTCHA plugin 0.3 11/16/09
+=======================================
+Adds a captcha to your registration page to reduce automated spam bots registering.
+
+Use:
+1. Get an API key from http://recaptcha.net
+
+2. In config.php add:
+addPlugin('recaptcha', array('private_key' => 'YourKeyHere',
+ 'public_key' => 'ReplaceWithYourKey'));
+or
+addPlugin('recaptcha', array('private_key' => 'YourKeyHere',
+ 'public_key' => 'ReplaceWithYourKey',
+ 'display_errors' => true));
+Changelog
+=========
+0.1 initial release
+0.2 Work around for webkit browsers
+0.3 Moved to new plugin arch for SN
+ **YOU WILL NEED TO CHANGE YOUR CONFIG.PHP!**
+
+reCAPTCHA Lib README
+====================
+
+The reCAPTCHA PHP Lirary helps you use the reCAPTCHA API. Documentation
+for this library can be found at
+
+ http://recaptcha.net/plugins/php
--- /dev/null
+<?php
+/**
+ * StatusNet, the distributed open-source microblogging tool
+ *
+ * Plugin to show reCaptcha when a user registers
+ *
+ * PHP version 5
+ *
+ * LICENCE: This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * @category Plugin
+ * @package StatusNet
+ * @author Eric Helgeson <erichelgeson@gmail.com>
+ * @copyright 2009
+ * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
+ * @link http://status.net/
+ */
+
+if (!defined('STATUSNET') && !defined('LACONICA')) {
+ exit(1);
+}
+
+define('RECAPTCHA', '0.2');
+
+require_once(INSTALLDIR.'/plugins/Recaptcha/recaptchalib.php');
+
+class RecaptchaPlugin extends Plugin
+{
+ var $private_key;
+ var $public_key;
+ var $display_errors;
+ var $failed;
+ var $ssl;
+
+ function onInitializePlugin(){
+ if(!isset($this->private_key)){
+ common_log(LOG_ERR, "Recaptcha: Must specify private_key in config.php");
+ }
+ if(!isset($this->public_key)){
+ common_log(LOG_ERR, "Recaptcha: Must specify public_key in config.php");
+ }
+ }
+
+ function checkssl(){
+ if(common_config('site', 'ssl') === 'sometimes' || common_config('site', 'ssl') === 'always') {
+ return true;
+ }
+ return false;
+ }
+
+ function onStartShowHTML($action)
+ {
+ //XXX: Horrible hack to make Safari, FF2, and Chrome work with
+ //reChapcha. reChapcha beaks xhtml strict
+ header('Content-Type: text/html');
+
+ $action->extraHeaders();
+
+ $action->startXML('html');
+
+ $action->raw('<style type="text/css">#recaptcha_area{float:left;}</style>');
+ return false;
+ }
+
+ function onEndRegistrationFormData($action)
+ {
+ $action->elementStart('li');
+ $action->raw('<label for="recaptcha_area">Captcha</label>');
+ if($this->checkssl() === true){
+ $action->raw(recaptcha_get_html($this->public_key), null, true);
+ } else {
+ $action->raw(recaptcha_get_html($this->public_key));
+ }
+ $action->elementEnd('li');
+ return true;
+ }
+
+ function onStartRegistrationTry($action)
+ {
+ $resp = recaptcha_check_answer ($this->private_key,
+ $_SERVER["REMOTE_ADDR"],
+ $action->trimmed('recaptcha_challenge_field'),
+ $action->trimmed('recaptcha_response_field'));
+
+ if (!$resp->is_valid)
+ {
+ if($this->display_errors)
+ {
+ $action->showForm ("(reCAPTCHA said: " . $resp->error . ")");
+ }
+ $action->showForm("Captcha does not match!");
+ return false;
+ }
+ }
+}
--- /dev/null
+<?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.
+ */
+
+/**
+ * The reCAPTCHA server URL's
+ */
+define("RECAPTCHA_API_SERVER", "http://api.recaptcha.net");
+define("RECAPTCHA_API_SECURE_SERVER", "https://api-secure.recaptcha.net");
+define("RECAPTCHA_VERIFY_SERVER", "api-verify.recaptcha.net");
+
+/**
+ * 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;
+}
+
+
+
+/**
+ * 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) {
+
+ $req = _recaptcha_qsencode ($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\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;
+}
+
+
+
+/**
+ * Gets the challenge HTML (javascript and non-javascript version).
+ * This is called from the browser, and the resulting reCAPTCHA HTML widget
+ * is embedded within the HTML form it was called from.
+ * @param string $pubkey A public key for reCAPTCHA
+ * @param string $error The error given by reCAPTCHA (optional, default is null)
+ * @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
+
+ * @return string - The HTML to be embedded in the user's form.
+ */
+function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
+{
+ if ($pubkey == null || $pubkey == '') {
+ die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
+ }
+
+ if ($use_ssl) {
+ $server = RECAPTCHA_API_SECURE_SERVER;
+ } else {
+ $server = RECAPTCHA_API_SERVER;
+ }
+
+ $errorpart = "";
+ if ($error) {
+ $errorpart = "&error=" . $error;
+ }
+ return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
+
+ <noscript>
+ <iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
+ <textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
+ <input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
+ </noscript>';
+}
+
+
+
+
+/**
+ * A ReCaptchaResponse is returned from recaptcha_check_answer()
+ */
+class ReCaptchaResponse {
+ var $is_valid;
+ var $error;
+}
+
+
+/**
+ * Calls an HTTP POST function to verify if the user's guess was correct
+ * @param string $privkey
+ * @param string $remoteip
+ * @param string $challenge
+ * @param string $response
+ * @param array $extra_params an array of extra variables to post to the server
+ * @return ReCaptchaResponse
+ */
+function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
+{
+ if ($privkey == null || $privkey == '') {
+ die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
+ }
+
+ if ($remoteip == null || $remoteip == '') {
+ die ("For security reasons, you must pass the remote ip to reCAPTCHA");
+ }
+
+
+
+ //discard spam submissions
+ if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
+ $recaptcha_response = new ReCaptchaResponse();
+ $recaptcha_response->is_valid = false;
+ $recaptcha_response->error = 'incorrect-captcha-sol';
+ return $recaptcha_response;
+ }
+
+ $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/verify",
+ array (
+ 'privatekey' => $privkey,
+ 'remoteip' => $remoteip,
+ 'challenge' => $challenge,
+ 'response' => $response
+ ) + $extra_params
+ );
+
+ $answers = explode ("\n", $response [1]);
+ $recaptcha_response = new ReCaptchaResponse();
+
+ if (trim ($answers [0]) == 'true') {
+ $recaptcha_response->is_valid = true;
+ }
+ else {
+ $recaptcha_response->is_valid = false;
+ $recaptcha_response->error = $answers [1];
+ }
+ return $recaptcha_response;
+
+}
+
+/**
+ * gets a URL where the user can sign up for reCAPTCHA. If your application
+ * has a configuration page where you enter a key, you should provide a link
+ * using this function.
+ * @param string $domain The domain where the page is hosted
+ * @param string $appname The name of your application
+ */
+function recaptcha_get_signup_url ($domain = null, $appname = null) {
+ return "http://recaptcha.net/api/getkey?" . _recaptcha_qsencode (array ('domain' => $domain, 'app' => $appname));
+}
+
+function _recaptcha_aes_pad($val) {
+ $block_size = 16;
+ $numpad = $block_size - (strlen ($val) % $block_size);
+ return str_pad($val, strlen ($val) + $numpad, chr($numpad));
+}
+
+/* Mailhide related code */
+
+function _recaptcha_aes_encrypt($val,$ky) {
+ if (! function_exists ("mcrypt_encrypt")) {
+ die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
+ }
+ $mode=MCRYPT_MODE_CBC;
+ $enc=MCRYPT_RIJNDAEL_128;
+ $val=_recaptcha_aes_pad($val);
+ return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
+}
+
+
+function _recaptcha_mailhide_urlbase64 ($x) {
+ return strtr(base64_encode ($x), '+/', '-_');
+}
+
+/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
+function recaptcha_mailhide_url($pubkey, $privkey, $email) {
+ if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
+ die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
+ "you can do so at <a href='http://mailhide.recaptcha.net/apikey'>http://mailhide.recaptcha.net/apikey</a>");
+ }
+
+
+ $ky = pack('H*', $privkey);
+ $cryptmail = _recaptcha_aes_encrypt ($email, $ky);
+
+ return "http://mailhide.recaptcha.net/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
+}
+
+/**
+ * gets the parts of the email to expose to the user.
+ * eg, given johndoe@example,com return ["john", "example.com"].
+ * the email is then displayed as john...@example.com
+ */
+function _recaptcha_mailhide_email_parts ($email) {
+ $arr = preg_split("/@/", $email );
+
+ if (strlen ($arr[0]) <= 4) {
+ $arr[0] = substr ($arr[0], 0, 1);
+ } else if (strlen ($arr[0]) <= 6) {
+ $arr[0] = substr ($arr[0], 0, 3);
+ } else {
+ $arr[0] = substr ($arr[0], 0, 4);
+ }
+ return $arr;
+}
+
+/**
+ * Gets html to display an email address given a public an private key.
+ * to get a key, go to:
+ *
+ * http://mailhide.recaptcha.net/apikey
+ */
+function recaptcha_mailhide_html($pubkey, $privkey, $email) {
+ $emailparts = _recaptcha_mailhide_email_parts ($email);
+ $url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
+
+ return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
+ "' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
+
+}
+
+
+?>
+++ /dev/null
-Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net
-AUTHORS:
- Mike Crawford
- Ben Maurer
-
-Permission is hereby granted, free of charge, to any person obtaining a copy
-of this software and associated documentation files (the "Software"), to deal
-in the Software without restriction, including without limitation the rights
-to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-copies of the Software, and to permit persons to whom the Software is
-furnished to do so, subject to the following conditions:
-
-The above copyright notice and this permission notice shall be included in
-all copies or substantial portions of the Software.
-
-THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-THE SOFTWARE.
+++ /dev/null
-StatusNet reCAPTCHA plugin 0.2 8/3/09
-====================================
-Adds a captcha to your registration page to reduce automated spam bots registering.
-
-Use:
-1. Get an API key from http://recaptcha.net
-
-2. In config.php add:
-include_once('plugins/recaptcha/recaptcha.php');
-$captcha = new recaptcha(publickey, privatekey, showErrors);
-
-Changelog
-=========
-0.1 initial release
-0.2 Work around for webkit browsers
-
-reCAPTCHA README
-================
-
-The reCAPTCHA PHP Lirary helps you use the reCAPTCHA API. Documentation
-for this library can be found at
-
- http://recaptcha.net/plugins/php
+++ /dev/null
-<?php
-/**
- * StatusNet, the distributed open-source microblogging tool
- *
- * Plugin to show reCaptcha when a user registers
- *
- * PHP version 5
- *
- * LICENCE: This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU Affero General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU Affero General Public License for more details.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- *
- * @category Plugin
- * @package StatusNet
- * @author Eric Helgeson <erichelgeson@gmail.com>
- * @copyright 2009
- * @license http://www.fsf.org/licensing/licenses/agpl-3.0.html GNU Affero General Public License version 3.0
- * @link http://status.net/
- */
-
-if (!defined('STATUSNET') && !defined('LACONICA')) {
- exit(1);
-}
-
-define('RECAPTCHA', '0.2');
-
-class recaptcha extends Plugin
-{
- var $private_key;
- var $public_key;
- var $display_errors;
- var $failed;
- var $ssl;
-
- function __construct($public_key, $private_key, $display_errors=false)
- {
- parent::__construct();
- require_once(INSTALLDIR.'/plugins/recaptcha/recaptchalib.php');
- $this->public_key = $public_key;
- $this->private_key = $private_key;
- $this->display_errors = $display_errors;
- }
-
- function checkssl(){
- if(common_config('site', 'ssl') === 'sometimes' || common_config('site', 'ssl') === 'always') {
- return true;
- }
- return false;
- }
-
- function onStartShowHTML($action)
- {
- //XXX: Horrible hack to make Safari, FF2, and Chrome work with
- //reChapcha. reChapcha beaks xhtml strict
- header('Content-Type: text/html');
-
- $action->extraHeaders();
-
- $action->startXML('html');
-
- $action->raw('<style type="text/css">#recaptcha_area{float:left;}</style>');
- return false;
- }
-
- function onEndRegistrationFormData($action)
- {
- $action->elementStart('li');
- $action->raw('<label for="recaptcha_area">Captcha</label>');
- if($this->checkssl() === true){
- $action->raw(recaptcha_get_html($this->public_key), null, true);
- } else {
- $action->raw(recaptcha_get_html($this->public_key));
- }
- $action->elementEnd('li');
- return true;
- }
-
- function onStartRegistrationTry($action)
- {
- $resp = recaptcha_check_answer ($this->private_key,
- $_SERVER["REMOTE_ADDR"],
- $action->trimmed('recaptcha_challenge_field'),
- $action->trimmed('recaptcha_response_field'));
-
- if (!$resp->is_valid)
- {
- if($this->display_errors)
- {
- $action->showForm ("(reCAPTCHA said: " . $resp->error . ")");
- }
- $action->showForm("Captcha does not match!");
- return false;
- }
- }
-}
+++ /dev/null
-<?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.
- */
-
-/**
- * The reCAPTCHA server URL's
- */
-define("RECAPTCHA_API_SERVER", "http://api.recaptcha.net");
-define("RECAPTCHA_API_SECURE_SERVER", "https://api-secure.recaptcha.net");
-define("RECAPTCHA_VERIFY_SERVER", "api-verify.recaptcha.net");
-
-/**
- * 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;
-}
-
-
-
-/**
- * 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) {
-
- $req = _recaptcha_qsencode ($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\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;
-}
-
-
-
-/**
- * Gets the challenge HTML (javascript and non-javascript version).
- * This is called from the browser, and the resulting reCAPTCHA HTML widget
- * is embedded within the HTML form it was called from.
- * @param string $pubkey A public key for reCAPTCHA
- * @param string $error The error given by reCAPTCHA (optional, default is null)
- * @param boolean $use_ssl Should the request be made over ssl? (optional, default is false)
-
- * @return string - The HTML to be embedded in the user's form.
- */
-function recaptcha_get_html ($pubkey, $error = null, $use_ssl = false)
-{
- if ($pubkey == null || $pubkey == '') {
- die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
- }
-
- if ($use_ssl) {
- $server = RECAPTCHA_API_SECURE_SERVER;
- } else {
- $server = RECAPTCHA_API_SERVER;
- }
-
- $errorpart = "";
- if ($error) {
- $errorpart = "&error=" . $error;
- }
- return '<script type="text/javascript" src="'. $server . '/challenge?k=' . $pubkey . $errorpart . '"></script>
-
- <noscript>
- <iframe src="'. $server . '/noscript?k=' . $pubkey . $errorpart . '" height="300" width="500" frameborder="0"></iframe><br/>
- <textarea name="recaptcha_challenge_field" rows="3" cols="40"></textarea>
- <input type="hidden" name="recaptcha_response_field" value="manual_challenge"/>
- </noscript>';
-}
-
-
-
-
-/**
- * A ReCaptchaResponse is returned from recaptcha_check_answer()
- */
-class ReCaptchaResponse {
- var $is_valid;
- var $error;
-}
-
-
-/**
- * Calls an HTTP POST function to verify if the user's guess was correct
- * @param string $privkey
- * @param string $remoteip
- * @param string $challenge
- * @param string $response
- * @param array $extra_params an array of extra variables to post to the server
- * @return ReCaptchaResponse
- */
-function recaptcha_check_answer ($privkey, $remoteip, $challenge, $response, $extra_params = array())
-{
- if ($privkey == null || $privkey == '') {
- die ("To use reCAPTCHA you must get an API key from <a href='http://recaptcha.net/api/getkey'>http://recaptcha.net/api/getkey</a>");
- }
-
- if ($remoteip == null || $remoteip == '') {
- die ("For security reasons, you must pass the remote ip to reCAPTCHA");
- }
-
-
-
- //discard spam submissions
- if ($challenge == null || strlen($challenge) == 0 || $response == null || strlen($response) == 0) {
- $recaptcha_response = new ReCaptchaResponse();
- $recaptcha_response->is_valid = false;
- $recaptcha_response->error = 'incorrect-captcha-sol';
- return $recaptcha_response;
- }
-
- $response = _recaptcha_http_post (RECAPTCHA_VERIFY_SERVER, "/verify",
- array (
- 'privatekey' => $privkey,
- 'remoteip' => $remoteip,
- 'challenge' => $challenge,
- 'response' => $response
- ) + $extra_params
- );
-
- $answers = explode ("\n", $response [1]);
- $recaptcha_response = new ReCaptchaResponse();
-
- if (trim ($answers [0]) == 'true') {
- $recaptcha_response->is_valid = true;
- }
- else {
- $recaptcha_response->is_valid = false;
- $recaptcha_response->error = $answers [1];
- }
- return $recaptcha_response;
-
-}
-
-/**
- * gets a URL where the user can sign up for reCAPTCHA. If your application
- * has a configuration page where you enter a key, you should provide a link
- * using this function.
- * @param string $domain The domain where the page is hosted
- * @param string $appname The name of your application
- */
-function recaptcha_get_signup_url ($domain = null, $appname = null) {
- return "http://recaptcha.net/api/getkey?" . _recaptcha_qsencode (array ('domain' => $domain, 'app' => $appname));
-}
-
-function _recaptcha_aes_pad($val) {
- $block_size = 16;
- $numpad = $block_size - (strlen ($val) % $block_size);
- return str_pad($val, strlen ($val) + $numpad, chr($numpad));
-}
-
-/* Mailhide related code */
-
-function _recaptcha_aes_encrypt($val,$ky) {
- if (! function_exists ("mcrypt_encrypt")) {
- die ("To use reCAPTCHA Mailhide, you need to have the mcrypt php module installed.");
- }
- $mode=MCRYPT_MODE_CBC;
- $enc=MCRYPT_RIJNDAEL_128;
- $val=_recaptcha_aes_pad($val);
- return mcrypt_encrypt($enc, $ky, $val, $mode, "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0");
-}
-
-
-function _recaptcha_mailhide_urlbase64 ($x) {
- return strtr(base64_encode ($x), '+/', '-_');
-}
-
-/* gets the reCAPTCHA Mailhide url for a given email, public key and private key */
-function recaptcha_mailhide_url($pubkey, $privkey, $email) {
- if ($pubkey == '' || $pubkey == null || $privkey == "" || $privkey == null) {
- die ("To use reCAPTCHA Mailhide, you have to sign up for a public and private key, " .
- "you can do so at <a href='http://mailhide.recaptcha.net/apikey'>http://mailhide.recaptcha.net/apikey</a>");
- }
-
-
- $ky = pack('H*', $privkey);
- $cryptmail = _recaptcha_aes_encrypt ($email, $ky);
-
- return "http://mailhide.recaptcha.net/d?k=" . $pubkey . "&c=" . _recaptcha_mailhide_urlbase64 ($cryptmail);
-}
-
-/**
- * gets the parts of the email to expose to the user.
- * eg, given johndoe@example,com return ["john", "example.com"].
- * the email is then displayed as john...@example.com
- */
-function _recaptcha_mailhide_email_parts ($email) {
- $arr = preg_split("/@/", $email );
-
- if (strlen ($arr[0]) <= 4) {
- $arr[0] = substr ($arr[0], 0, 1);
- } else if (strlen ($arr[0]) <= 6) {
- $arr[0] = substr ($arr[0], 0, 3);
- } else {
- $arr[0] = substr ($arr[0], 0, 4);
- }
- return $arr;
-}
-
-/**
- * Gets html to display an email address given a public an private key.
- * to get a key, go to:
- *
- * http://mailhide.recaptcha.net/apikey
- */
-function recaptcha_mailhide_html($pubkey, $privkey, $email) {
- $emailparts = _recaptcha_mailhide_email_parts ($email);
- $url = recaptcha_mailhide_url ($pubkey, $privkey, $email);
-
- return htmlentities($emailparts[0]) . "<a href='" . htmlentities ($url) .
- "' onclick=\"window.open('" . htmlentities ($url) . "', '', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=500,height=300'); return false;\" title=\"Reveal this e-mail address\">...</a>@" . htmlentities ($emailparts [1]);
-
-}
-
-
-?>
projects / quix0rs-gnu-social.git / commitdiff