From d080afebbe835c70ed5b6937f71df5a36aeb906e Mon Sep 17 00:00:00 2001 From: Eric Helgeson Date: Mon, 16 Nov 2009 11:44:31 -0500 Subject: Refactored Recaptcha plugin to use addPlugin() Also nicer log messages --- plugins/Recaptcha/LICENSE | 22 +++ plugins/Recaptcha/README | 28 ++++ plugins/Recaptcha/RecaptchaPlugin.php | 106 +++++++++++++ plugins/Recaptcha/recaptchalib.php | 277 ++++++++++++++++++++++++++++++++++ plugins/recaptcha/LICENSE | 22 --- plugins/recaptcha/README | 23 --- plugins/recaptcha/recaptcha.php | 104 ------------- plugins/recaptcha/recaptchalib.php | 277 ---------------------------------- 8 files changed, 433 insertions(+), 426 deletions(-) create mode 100644 plugins/Recaptcha/LICENSE create mode 100644 plugins/Recaptcha/README create mode 100644 plugins/Recaptcha/RecaptchaPlugin.php create mode 100644 plugins/Recaptcha/recaptchalib.php delete mode 100644 plugins/recaptcha/LICENSE delete mode 100644 plugins/recaptcha/README delete mode 100644 plugins/recaptcha/recaptcha.php delete mode 100644 plugins/recaptcha/recaptchalib.php diff --git a/plugins/Recaptcha/LICENSE b/plugins/Recaptcha/LICENSE new file mode 100644 index 000000000..b612f71f0 --- /dev/null +++ b/plugins/Recaptcha/LICENSE @@ -0,0 +1,22 @@ +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. diff --git a/plugins/Recaptcha/README b/plugins/Recaptcha/README new file mode 100644 index 000000000..49c4b9c27 --- /dev/null +++ b/plugins/Recaptcha/README @@ -0,0 +1,28 @@ +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 diff --git a/plugins/Recaptcha/RecaptchaPlugin.php b/plugins/Recaptcha/RecaptchaPlugin.php new file mode 100644 index 000000000..1a51b16be --- /dev/null +++ b/plugins/Recaptcha/RecaptchaPlugin.php @@ -0,0 +1,106 @@ +. + * + * @category Plugin + * @package StatusNet + * @author Eric Helgeson + * @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'); + + $action->raw(''); + return false; + } + + function onEndRegistrationFormData($action) + { + $action->elementStart('li'); + $action->raw(''); + if($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; + } + } +} diff --git a/plugins/Recaptcha/recaptchalib.php b/plugins/Recaptcha/recaptchalib.php new file mode 100644 index 000000000..897c50981 --- /dev/null +++ b/plugins/Recaptcha/recaptchalib.php @@ -0,0 +1,277 @@ + $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 || $pubkey == '') { + die ("To use reCAPTCHA you must get an API key from http://recaptcha.net/api/getkey"); + } + + if ($use_ssl) { + $server = RECAPTCHA_API_SECURE_SERVER; + } else { + $server = RECAPTCHA_API_SERVER; + } + + $errorpart = ""; + if ($error) { + $errorpart = "&error=" . $error; + } + return ' + + '; +} + + + + +/** + * 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 || $privkey == '') { + die ("To use reCAPTCHA you must get an API key from http://recaptcha.net/api/getkey"); + } + + if ($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 http://mailhide.recaptcha.net/apikey"); + } + + + $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]) . "...@" . htmlentities ($emailparts [1]); + +} + + +?> diff --git a/plugins/recaptcha/LICENSE b/plugins/recaptcha/LICENSE deleted file mode 100644 index b612f71f0..000000000 --- a/plugins/recaptcha/LICENSE +++ /dev/null @@ -1,22 +0,0 @@ -Copyright (c) 2007 reCAPTCHA -- http://recaptcha.net -AUTHORS: - Mike Crawford - Ben Maurer - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in -all copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN -THE SOFTWARE. diff --git a/plugins/recaptcha/README b/plugins/recaptcha/README deleted file mode 100644 index b996f96cc..000000000 --- a/plugins/recaptcha/README +++ /dev/null @@ -1,23 +0,0 @@ -StatusNet reCAPTCHA plugin 0.2 8/3/09 -==================================== -Adds a captcha to your registration page to reduce automated spam bots registering. - -Use: -1. Get an API key from http://recaptcha.net - -2. In config.php add: -include_once('plugins/recaptcha/recaptcha.php'); -$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 diff --git a/plugins/recaptcha/recaptcha.php b/plugins/recaptcha/recaptcha.php deleted file mode 100644 index 94cf0ccd1..000000000 --- a/plugins/recaptcha/recaptcha.php +++ /dev/null @@ -1,104 +0,0 @@ -. - * - * @category Plugin - * @package StatusNet - * @author Eric Helgeson - * @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'); - - $action->raw(''); - return false; - } - - function onEndRegistrationFormData($action) - { - $action->elementStart('li'); - $action->raw(''); - if($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; - } - } -} diff --git a/plugins/recaptcha/recaptchalib.php b/plugins/recaptcha/recaptchalib.php deleted file mode 100644 index 897c50981..000000000 --- a/plugins/recaptcha/recaptchalib.php +++ /dev/null @@ -1,277 +0,0 @@ - $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 || $pubkey == '') { - die ("To use reCAPTCHA you must get an API key from http://recaptcha.net/api/getkey"); - } - - if ($use_ssl) { - $server = RECAPTCHA_API_SECURE_SERVER; - } else { - $server = RECAPTCHA_API_SERVER; - } - - $errorpart = ""; - if ($error) { - $errorpart = "&error=" . $error; - } - return ' - - '; -} - - - - -/** - * 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 || $privkey == '') { - die ("To use reCAPTCHA you must get an API key from http://recaptcha.net/api/getkey"); - } - - if ($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 http://mailhide.recaptcha.net/apikey"); - } - - - $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]) . "...@" . htmlentities ($emailparts [1]); - -} - - -?> -- cgit v1.2.3-54-g00ecf