diff -r 5b37998e522e -r 162c1de6545a web/lib/Zend/Service/ReCaptcha.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/lib/Zend/Service/ReCaptcha.php	Fri Mar 11 15:05:35 2011 +0100
@@ -0,0 +1,506 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Service
+ * @subpackage ReCaptcha
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+
+/** @see Zend_Service_Abstract */
+require_once 'Zend/Service/Abstract.php';
+
+/** @see Zend_Json */
+require_once 'Zend/Json.php';
+
+/** @see Zend_Service_ReCaptcha_Response */
+require_once 'Zend/Service/ReCaptcha/Response.php';
+
+/**
+ * Zend_Service_ReCaptcha
+ *
+ * @category   Zend
+ * @package    Zend_Service
+ * @subpackage ReCaptcha
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: ReCaptcha.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+class Zend_Service_ReCaptcha extends Zend_Service_Abstract
+{
+    /**
+     * URI to the regular API
+     *
+     * @var string
+     */
+    const API_SERVER = 'http://api.recaptcha.net';
+
+    /**
+     * URI to the secure API
+     *
+     * @var string
+     */
+    const API_SECURE_SERVER = 'https://api-secure.recaptcha.net';
+
+    /**
+     * URI to the verify server
+     *
+     * @var string
+     */
+    const VERIFY_SERVER = 'http://api-verify.recaptcha.net/verify';
+
+    /**
+     * Public key used when displaying the captcha
+     *
+     * @var string
+     */
+    protected $_publicKey = null;
+
+    /**
+     * Private key used when verifying user input
+     *
+     * @var string
+     */
+    protected $_privateKey = null;
+
+    /**
+     * Ip address used when verifying user input
+     *
+     * @var string
+     */
+    protected $_ip = null;
+
+    /**
+     * Parameters for the object
+     *
+     * @var array
+     */
+    protected $_params = array(
+        'ssl' => false, /* Use SSL or not when generating the recaptcha */
+        'error' => null, /* The error message to display in the recaptcha */
+        'xhtml' => false /* Enable XHTML output (this will not be XHTML Strict
+                            compliant since the IFRAME is necessary when
+                            Javascript is disabled) */
+    );
+
+    /**
+     * Options for tailoring reCaptcha
+     *
+     * See the different options on http://recaptcha.net/apidocs/captcha/client.html
+     *
+     * @var array
+     */
+    protected $_options = array(
+        'theme' => 'red',
+        'lang' => 'en',
+    );
+
+    /**
+     * Response from the verify server
+     *
+     * @var Zend_Service_ReCaptcha_Response
+     */
+    protected $_response = null;
+
+    /**
+     * Class constructor
+     *
+     * @param string $publicKey
+     * @param string $privateKey
+     * @param array $params
+     * @param array $options
+     * @param string $ip
+     * @param array|Zend_Config $params
+     */
+    public function __construct($publicKey = null, $privateKey = null,
+                                $params = null, $options = null, $ip = null)
+    {
+        if ($publicKey !== null) {
+            $this->setPublicKey($publicKey);
+        }
+
+        if ($privateKey !== null) {
+            $this->setPrivateKey($privateKey);
+        }
+
+        if ($ip !== null) {
+            $this->setIp($ip);
+        } else if (isset($_SERVER['REMOTE_ADDR'])) {
+            $this->setIp($_SERVER['REMOTE_ADDR']);
+        }
+
+        if ($params !== null) {
+            $this->setParams($params);
+        }
+
+        if ($options !== null) {
+            $this->setOptions($options);
+        }
+    }
+
+    /**
+     * Serialize as string
+     *
+     * When the instance is used as a string it will display the recaptcha.
+     * Since we can't throw exceptions within this method we will trigger
+     * a user warning instead.
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        try {
+            $return = $this->getHtml();
+        } catch (Exception $e) {
+            $return = '';
+            trigger_error($e->getMessage(), E_USER_WARNING);
+        }
+
+        return $return;
+    }
+
+    /**
+     * Set the ip property
+     *
+     * @param string $ip
+     * @return Zend_Service_ReCaptcha
+     */
+    public function setIp($ip)
+    {
+        $this->_ip = $ip;
+
+        return $this;
+    }
+
+    /**
+     * Get the ip property
+     *
+     * @return string
+     */
+    public function getIp()
+    {
+        return $this->_ip;
+    }
+
+    /**
+     * Set a single parameter
+     *
+     * @param string $key
+     * @param string $value
+     * @return Zend_Service_ReCaptcha
+     */
+    public function setParam($key, $value)
+    {
+        $this->_params[$key] = $value;
+
+        return $this;
+    }
+
+    /**
+     * Set parameters
+     *
+     * @param array|Zend_Config $params
+     * @return Zend_Service_ReCaptcha
+     * @throws Zend_Service_ReCaptcha_Exception
+     */
+    public function setParams($params)
+    {
+        if ($params instanceof Zend_Config) {
+            $params = $params->toArray();
+        }
+
+        if (is_array($params)) {
+            foreach ($params as $k => $v) {
+                $this->setParam($k, $v);
+            }
+        } else {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception(
+                'Expected array or Zend_Config object'
+            );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the parameter array
+     *
+     * @return array
+     */
+    public function getParams()
+    {
+        return $this->_params;
+    }
+
+    /**
+     * Get a single parameter
+     *
+     * @param string $key
+     * @return mixed
+     */
+    public function getParam($key)
+    {
+        return $this->_params[$key];
+    }
+
+    /**
+     * Set a single option
+     *
+     * @param string $key
+     * @param string $value
+     * @return Zend_Service_ReCaptcha
+     */
+    public function setOption($key, $value)
+    {
+        $this->_options[$key] = $value;
+
+        return $this;
+    }
+
+    /**
+     * Set options
+     *
+     * @param array|Zend_Config $options
+     * @return Zend_Service_ReCaptcha
+     * @throws Zend_Service_ReCaptcha_Exception
+     */
+    public function setOptions($options)
+    {
+        if ($options instanceof Zend_Config) {
+            $options = $options->toArray();
+        }
+
+        if (is_array($options)) {
+            foreach ($options as $k => $v) {
+                $this->setOption($k, $v);
+            }
+        } else {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception(
+                'Expected array or Zend_Config object'
+            );
+        }
+
+        return $this;
+    }
+
+    /**
+     * Get the options array
+     *
+     * @return array
+     */
+    public function getOptions()
+    {
+        return $this->_options;
+    }
+
+    /**
+     * Get a single option
+     *
+     * @param string $key
+     * @return mixed
+     */
+    public function getOption($key)
+    {
+        return $this->_options[$key];
+    }
+
+    /**
+     * Get the public key
+     *
+     * @return string
+     */
+    public function getPublicKey()
+    {
+        return $this->_publicKey;
+    }
+
+    /**
+     * Set the public key
+     *
+     * @param string $publicKey
+     * @return Zend_Service_ReCaptcha
+     */
+    public function setPublicKey($publicKey)
+    {
+        $this->_publicKey = $publicKey;
+
+        return $this;
+    }
+
+    /**
+     * Get the private key
+     *
+     * @return string
+     */
+    public function getPrivateKey()
+    {
+        return $this->_privateKey;
+    }
+
+    /**
+     * Set the private key
+     *
+     * @param string $privateKey
+     * @return Zend_Service_ReCaptcha
+     */
+    public function setPrivateKey($privateKey)
+    {
+        $this->_privateKey = $privateKey;
+
+        return $this;
+    }
+
+    /**
+     * Get the HTML code for the captcha
+     *
+     * This method uses the public key to fetch a recaptcha form.
+     *
+     * @return string
+     * @throws Zend_Service_ReCaptcha_Exception
+     */
+    public function getHtml()
+    {
+        if ($this->_publicKey === null) {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception('Missing public key');
+        }
+
+        $host = self::API_SERVER;
+
+        if ((bool) $this->_params['ssl'] === true) {
+            $host = self::API_SECURE_SERVER;
+        }
+
+        $htmlBreak = '<br>';
+        $htmlInputClosing = '>';
+
+        if ((bool) $this->_params['xhtml'] === true) {
+            $htmlBreak = '<br />';
+            $htmlInputClosing = '/>';
+        }
+
+        $errorPart = '';
+
+        if (!empty($this->_params['error'])) {
+            $errorPart = '&error=' . urlencode($this->_params['error']);
+        }
+
+        $reCaptchaOptions = '';
+
+        if (!empty($this->_options)) {
+            $encoded = Zend_Json::encode($this->_options);
+            $reCaptchaOptions = <<<SCRIPT
+<script type="text/javascript">
+    var RecaptchaOptions = {$encoded};
+</script>
+SCRIPT;
+        }
+
+        $return = $reCaptchaOptions;
+        $return .= <<<HTML
+<script type="text/javascript"
+   src="{$host}/challenge?k={$this->_publicKey}{$errorPart}">
+</script>
+HTML;
+        $return .= <<<HTML
+<noscript>
+   <iframe src="{$host}/noscript?k={$this->_publicKey}{$errorPart}"
+       height="300" width="500" frameborder="0"></iframe>{$htmlBreak}
+   <textarea name="recaptcha_challenge_field" rows="3" cols="40">
+   </textarea>
+   <input type="hidden" name="recaptcha_response_field"
+       value="manual_challenge"{$htmlInputClosing}
+</noscript>
+HTML;
+
+        return $return;
+    }
+
+    /**
+     * Post a solution to the verify server
+     *
+     * @param string $challengeField
+     * @param string $responseField
+     * @return Zend_Http_Response
+     * @throws Zend_Service_ReCaptcha_Exception
+     */
+    protected function _post($challengeField, $responseField)
+    {
+        if ($this->_privateKey === null) {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception('Missing private key');
+        }
+
+        if ($this->_ip === null) {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception('Missing ip address');
+        }
+
+        if (empty($challengeField)) {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+            throw new Zend_Service_ReCaptcha_Exception('Missing challenge field');
+        }
+
+        if (empty($responseField)) {
+            /** @see Zend_Service_ReCaptcha_Exception */
+            require_once 'Zend/Service/ReCaptcha/Exception.php';
+
+            throw new Zend_Service_ReCaptcha_Exception('Missing response field');
+        }
+
+        /* Fetch an instance of the http client */
+        $httpClient = self::getHttpClient();
+
+        $postParams = array('privatekey' => $this->_privateKey,
+                            'remoteip'   => $this->_ip,
+                            'challenge'  => $challengeField,
+                            'response'   => $responseField);
+
+        /* Make the POST and return the response */
+        return $httpClient->setUri(self::VERIFY_SERVER)
+                          ->setParameterPost($postParams)
+                          ->request(Zend_Http_Client::POST);
+    }
+
+    /**
+     * Verify the user input
+     *
+     * This method calls up the post method and returns a
+     * Zend_Service_ReCaptcha_Response object.
+     *
+     * @param string $challengeField
+     * @param string $responseField
+     * @return Zend_Service_ReCaptcha_Response
+     */
+    public function verify($challengeField, $responseField)
+    {
+        $response = $this->_post($challengeField, $responseField);
+
+        return new Zend_Service_ReCaptcha_Response(null, null, $response);
+    }
+}