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  1. #1
    New to the CF scene
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    Aug 2011
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    reCaptcha not working

    Hi. I am trying to use reCaptcha for a simple form and it's just not working out. I have successfully used it for another form and used that page as a template, but something has gone wrong. Please help.

    Code:
    <?php require_once('header.php');
    	require_once('recaptchalib.php'); 
    	
        $submitmsg = false;
    	if (isset($_REQUEST['submit'])) {
    		$privatekey = "my private key";  
    				$resp = recaptcha_check_answer ($privatekey, $_SERVER["REMOTE_ADDR"], $_POST["recaptcha_challenge_field"], $_POST["recaptcha_response_field"]);  
    				 if (!$resp->is_valid) {    // What happens when the CAPTCHA was entered incorrectly    
    				 	echo "<p class=\"errormsg\">The verification text you entered is incorrect. Please try again.</p>";
    				 } 
    				 else {    // Your code here to handle a successful verification  
    		$message = "";
    		$message.="Appointment Request\n";
    		$message.="----------------------------------\n";
    		$message.="Client Name: {$_REQUEST['client_name']}\n";
    		$message.="Pet's Name: {$_REQUEST['pet_name']}\n";
    		$message.="Reason for Visit: {$_REQUEST['reason_for_visit']}\n";
    		$message.="Doctor Preference: {$_REQUEST['doctor_preference']}\n";
    		$message.="Date Requested: {$_REQUEST['date_requested']}\n";
    		$message.="Approximate Time Requested: {$_REQUEST['appointment_time']}\n";
    		$message.="Telephone Number: {$_REQUEST['telephone_number']}\n";
    		mail("info@tbvet.com", "Subject: Appointment Request", $message, "From: appointments@tbvet.com" );	
    		$submitmsg = true;
    		}
    	}
    	
    ?>
    
    <div id="content">
    	<form name="input" action="appointment_request_form.php" method="post">
    		<?php 
    			if ($submitmsg) {
    				echo "<div id=\"thankyou\">Thank-you for your appointment request! We will do our best to accommodate you. Someone will be in contact with you to confirm your pet's appointment soon.</div>";
    			} 
    		?>
            <h1>Request an appointment for your pet:</h1>
        	<p>Please fill out the form below as completely as possible.</p>
            <p>Your first and last name:</p>
            <textarea rows="1" cols="30" name="client_name"></textarea>
            <p>Your pet's name:</p>
            <textarea rows="1" cols="30" name="pet_name"></textarea>
            <p>Reason for visit:</p>
            <textarea rows="3" cols="60" name="reason_for_visit"></textarea>
            <p>Would you like to request a specific docotr?<p>
            <input type="radio" name="which_doctor" id="doc-alderson" value="Alderson" /> <label for="doc-alderson">Alderson</label>
    		<input type="radio" name="which_doctor" id="doc-beveridge" value="Beveridge" /> <label for="doc-beveridge">Beveridge</label>
    		<input type="radio" name="which_doctor" id="doc-kubinec" value="Kubinec" /> <label for="doc-kubinec">Kubinec</label>
    		<input type="radio" name="which_doctor" id="doc-vanderkooi" value="VanderKooi" /> <label for="doc-vanderkooi">Vander Kooi</label>
    		<input type="radio" name="which_doctor" id="doc-panontin" value="Panontin" /> <label for="doc-panontin">Panontin</label>
            <input type="radio" name="which_doctor" id="doc_no_preference" value="No_Preference" /> <label for="doc-no_preference">No Preference</label>
            <p>Specific date or date options:</p>
            <textarea rows="3" cols="60" name="date_requested"></textarea>
            <p>Approximate time requested:</p>
            <textarea rows="1" cols="30" name="date_requested"></textarea>
            <p>We will do our very best to accommodate your request. One of our staff members will call you to confirm an actual appointment date and time.</p>
            <p>Your telephone number (required):</p>
            <textarea rows="1" cols="30" name="telephone_number"></textarea>    	
            
            	<?php                  
    			$publickey = "pubickey"; // you got this from the signup page          
    			echo recaptcha_get_html($publickey);        
    			?>
                
            <input type="submit" value="Submit" name="submit" />
            <input type="reset" name="reset" value="Reset" />
        </form>
        
    </div>
                
    <?php require_once('footer.php');
    ?>
    Code:
    <?php
    /*
     * This is a PHP library that handles calling reCAPTCHA.
     *    - Documentation and latest version
     *          http://recaptcha.net/plugins/php/
     *    - Get a reCAPTCHA API Key
     *          https://www.google.com/recaptcha/admin/create
     *    - 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://www.google.com/recaptcha/api");
    define("RECAPTCHA_API_SECURE_SERVER", "https://www.google.com/recaptcha/api");
    define("RECAPTCHA_VERIFY_SERVER", "www.google.com");
    
    /**
     * 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='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
    	}
    	
    	if ($use_ssl) {
                    $server = RECAPTCHA_API_SECURE_SERVER;
            } else {
                    $server = RECAPTCHA_API_SERVER;
            }
    
            $errorpart = "";
            if ($error) {
               $errorpart = "&amp;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='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</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, "/recaptcha/api/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 "https://www.google.com/recaptcha/admin/create?" .  _recaptcha_qsencode (array ('domains' => $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://www.google.com/recaptcha/mailhide/apikey'>http://www.google.com/recaptcha/mailhide/apikey</a>");
    	}
    	
    
    	$ky = pack('H*', $privkey);
    	$cryptmail = _recaptcha_aes_encrypt ($email, $ky);
    	
    	return "http://www.google.com/recaptcha/mailhide/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://www.google.com/recaptcha/mailhide/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]);
    
    }
    
    
    ?>
    Last edited by Sherri; 11-07-2011 at 05:32 PM.

  • #2
    Regular Coder
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    What is happening when you submit the form? We need to know what issue is happening.
    WordPress Designer and theme developer. KlongDesigns - helping bloggers and non-technical folks claim their space on the internet.

  • #3
    Supreme Master coder! _Aerospace_Eng_'s Avatar
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    Your recaptcha setup looks correct. Is the recaptcha even showing? What messages are you getting after submitting the form?
    ||||If you are getting paid to do a job, don't ask for help on it!||||


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