Ok this is my take on adding the recaptcha.
It is pure alpha, nothing tested, simply written by the instructions of
ReCaptcha for PHP. All operations are done in /class/captcha/ and all needed things are in the link above.
-1- download the Recaptcha and extract recaptchalib.php
-2- register and obtain an API key
-3- modify config.php and fill in your private key
<?php return $config = array( "disabled" => false, // Disable CAPTCHA "mode" => 'recaptcha', // default mode image, text or recaptcha "name" => 'xoopscaptcha', // captcha name "skipmember" => true, // Skip CAPTCHA check for members "maxattempt" => 10, // Maximum attempts for each session "num_chars" => 4, // Maximum characters "rule_text" => _CAPTCHA_RULE_TEXT, "maxattempt_text" => _CAPTCHA_MAXATTEMPTS, "private_key" => 'myAPIkey' ); ?>
-4- add config.recaptcha.php and fill in your public key
<?php return $config = array( "public_key" => 'myAPIkey' ); ?>
-5- add recaptcha.php
<?php class XoopsCaptchaRecaptcha extends XoopsCaptchaMethod { function __construct($handler = null) { parent::__construct($handler); parent::loadConfig('recaptcha'); } function XoopsCaptchaImage($handler = null) { $this->__construct($handler); } function isActive() { return true; } function render() { $image = $this->loadImage(); return $image . '<br />'; } function loadImage() { require_once(XOOPS_ROOT_PATH . '/class/captcha/'.'recaptchalib.php'); $publickey = $this->config["public_key"]; // you got this from the signup page see config.captcha.php $ret = recaptcha_get_html($publickey); return $ret; } } ?>
-6- insert
le="color: #000000"><?php // Verify the ReCaptcha code } elseif ($this->config["mode"] == 'recaptcha') { require_once(XOOPS_ROOT_PATH . '/class/captcha/'.'recaptchalib.php'); $privatekey = $this->config["private_key"] ; $resp = recaptcha_check_answer ($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]); if (!$resp->is_valid) { $this->message[] = $resp->error; } else { $is_valid = true; } // Verify the code Captcha
before
le="color: #000000"><?php } elseif (!empty($_SESSION["{$sessionName}_code"])) { $func = !empty($this->config["casesensitive"]) ? "strcmp" : "strcasecmp"; $is_valid = ! $func( trim(@$_POST[$sessionName]), $_SESSION["{$sessionName}_code"] ); }
in xoopscaptcha.php
You need also to change:
le="color: #000000"><?php $this->path_plugin = XOOPS_ROOT_PATH . "/Frameworks/captcha";
to
le="color: #000000"><?php $this->path_plugin = XOOPS_ROOT_PATH . '/class/captcha';
in xoopscaptcha.php
-7- test
Edit: corrected include path and made it clearer for public and private keys.
- Added correction for Frameworks relic
