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Upgrade to Google's no CAPTCHA reCAPTCHA

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Not tested this very well, but it seems to be working anyway…
This commit is contained in:
Tom Slominski
2015-01-31 00:01:01 +00:00
parent f5ac64c570
commit 1ff153dad9
7 changed files with 17 additions and 295 deletions
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3
.gitignore vendored
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@@ -10,5 +10,6 @@
!footer.php !footer.php
!.gitignore !.gitignore
# Specifically ignore the config file # Specifically ignore the config file and the DS_Store
public/config.php public/config.php
public/.DS_Store

9
header.php
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@@ -13,9 +13,6 @@ function isq_load_textdomain() {
$site = YOURLS_SITE; $site = YOURLS_SITE;
} }
isq_load_textdomain(); isq_load_textdomain();
// Load reCAPTCHA
require_once( dirname(__FILE__).'/public/recaptchalib.php');
?> ?>
<html> <html>
@@ -36,11 +33,7 @@ require_once( dirname(__FILE__).'/public/recaptchalib.php');
{lang: "en-GB"} {lang: "en-GB"}
</script> </script>
<?php } ?> <?php } ?>
<script type="text/javascript"><!-- reCAPTCHA --> <script src='https://www.google.com/recaptcha/api.js'></script><!-- reCAPTCHA -->
var RecaptchaOptions = {
theme : 'white'
};
</script>
<?php if (!empty(ISQ::$general['clipboard'])) { ?> <?php if (!empty(ISQ::$general['clipboard'])) { ?>
<script type="text/javascript" src="js/jquery.zclip.min.js"></script> <script type="text/javascript" src="js/jquery.zclip.min.js"></script>
<script> <script>

2
index.php
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@@ -12,7 +12,7 @@ $title = isset( $_REQUEST['title'] ) ? yourls_sanitize_title( $_REQUEST['title
<p><label for="url" title="<?php yourls_e( 'Paste the long URL here', 'isq_translation'); ?>"><?php yourls_e( 'Long URL (required):', 'isq_translation'); ?></label> <input type="text" id="url" class="right" name="url" value="<?php echo($url); ?>" /></p> <p><label for="url" title="<?php yourls_e( 'Paste the long URL here', 'isq_translation'); ?>"><?php yourls_e( 'Long URL (required):', 'isq_translation'); ?></label> <input type="text" id="url" class="right" name="url" value="<?php echo($url); ?>" /></p>
<p><label for="keyword" title="<?php yourls_e( 'A keyword replaces the default short string', 'isq_translation'); ?>"><?php yourls_e( 'Custom keyword:', 'isq_translation'); ?></label> <input type="text" id="keyword" class="right" name="keyword" value="<?php echo($keyword); ?>" /></p> <p><label for="keyword" title="<?php yourls_e( 'A keyword replaces the default short string', 'isq_translation'); ?>"><?php yourls_e( 'Custom keyword:', 'isq_translation'); ?></label> <input type="text" id="keyword" class="right" name="keyword" value="<?php echo($keyword); ?>" /></p>
<p><label for="title" title="<?php yourls_e( 'Optional title used when sharing a link from YOURLS using social sharers', 'isq_translation'); ?>"><?php yourls_e( 'Optional title:', 'isq_translation'); ?></label> <input type="text" id="title" class="right" name="title" value="<?php echo($title); ?>" /></p> <p><label for="title" title="<?php yourls_e( 'Optional title used when sharing a link from YOURLS using social sharers', 'isq_translation'); ?>"><?php yourls_e( 'Optional title:', 'isq_translation'); ?></label> <input type="text" id="title" class="right" name="title" value="<?php echo($title); ?>" /></p>
<p><label for="antispam" title="<?php yourls_e( 'This is an antispam check. Sorry, we have to do this to prevent the database being overrun by bots!', 'isq_translation'); ?>"><?php yourls_e( 'reCAPTCHA', 'isq_translation'); ?></label> <span class="right"><?php echo recaptcha_get_html(ISQ::$recaptcha['public']); ?></span></p> <div class="recaptcha-container"><label title="<?php yourls_e( 'Verification used to ensure the user is not a bot', 'isq_translation'); ?>"><?php yourls_e( 'reCAPTCHA:', 'isq_translation'); ?></label> <div class="g-recaptcha right" data-sitekey="<?php echo ISQ::$recaptcha['sitekey']; ?>"></div></div>
<p><input type="submit" value="<?php yourls_e( 'Shorten', 'isq_translation'); ?>" /></p> <p><input type="submit" value="<?php yourls_e( 'Shorten', 'isq_translation'); ?>" /></p>
</form> </form>

4
public/config-sample.php
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@@ -48,7 +48,7 @@ ISQ::$social = array(
// reCAPTCHA API keys // reCAPTCHA API keys
// Get yourls from https://www.google.com/recaptcha/admin // Get yourls from https://www.google.com/recaptcha/admin
ISQ::$recaptcha = array( ISQ::$recaptcha = array(
'public' => '', 'sitekey' => '',
'private' => '' 'secret' => ''
); );
?> ?>

276
public/recaptchalib.php
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@@ -1,276 +0,0 @@
<?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 $error The error given by reCAPTCHA (optional, default is null)
* @return string - The HTML to be embedded in the user's form.
*/
function recaptcha_get_html ($pubkey, $error = null)
{
if ($pubkey == null || $pubkey == '') {
die ("To use reCAPTCHA you must get an API key from <a href='https://www.google.com/recaptcha/admin/create'>https://www.google.com/recaptcha/admin/create</a>");
}
if (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off'
|| $_SERVER['SERVER_PORT'] == 443) { // http://stackoverflow.com/questions/1175096/how-to-find-out-if-you-are-using-https-without-serverhttps
$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]);
}
?>

6
public/style.css
View File

@@ -169,6 +169,12 @@ input[type="radio"] {
margin: 2px; margin: 2px;
} }
/* reCAPTCHA */
.recaptcha-container {
font-size: 1.2em;
overflow: hidden;
}
/* Tooltips */ /* Tooltips */
.qtip-default { .qtip-default {
border-color: #013F6D; border-color: #013F6D;

12
result.php
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@@ -10,14 +10,12 @@ $shorturl = isset( $return['shorturl'] ) ? $return['shorturl'] : '';
$message = isset( $return['message'] ) ? $return['message'] : ''; $message = isset( $return['message'] ) ? $return['message'] : '';
$title = isset( $return['title'] ) ? $return['title'] : ''; $title = isset( $return['title'] ) ? $return['title'] : '';
$resp = recaptcha_check_answer (ISQ::$recaptcha['private'], $recaptcha_data = file_get_contents('https://www.google.com/recaptcha/api/siteverify?secret=' . ISQ::$recaptcha['secret'] . '&response=' . $_REQUEST['g-recaptcha-response']);
$_SERVER["REMOTE_ADDR"], $recaptcha_json = json_decode($recaptcha_data, TRUE);
$_POST["recaptcha_challenge_field"],
$_POST["recaptcha_response_field"]);
if (!$resp->is_valid) { if ($recaptcha_json['success'] != 'true') {
// What happens when the CAPTCHA was entered incorrectly // What happens when the CAPTCHA was entered incorrectly
die ( '<p class="error" title="' . $resp->error . '">' . yourls__( 'The reCAPTCHA wasn\'t entered correctly. Go back and try it again.', 'isq_translation' ) . '</p></div></div>' ); die ( '<p class="error" title="' . $resp->error . '">' . yourls__( 'Are you a bot? Google thinks so. Go back and try again.', 'isq_translation' ) . '</p></div></div>' );
} }
?> ?>
@@ -29,7 +27,7 @@ if (!$resp->is_valid) {
<h2><?php yourls_e( 'Results', 'isq_translation'); ?></h2> <h2><?php yourls_e( 'Results', 'isq_translation'); ?></h2>
<p><?php yourls_e( 'View your short URL', 'isq_translation'); ?></p> <p><?php yourls_e( 'View your short URL', 'isq_translation'); ?></p>
<div class="output"> <div class="output">
<p><label for="longurl"><? yourls_e( 'Original URL:', 'isq_translation'); ?></label> <input type="text" name="longurl" onclick="this.select();" onload="this.select();" value="<?php echo $url; ?>" id="long-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="long-copy" data-clipboard-target="long-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p> <p><label for="longurl"><?php yourls_e( 'Original URL:', 'isq_translation'); ?></label> <input type="text" name="longurl" onclick="this.select();" onload="this.select();" value="<?php echo $url; ?>" id="long-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="long-copy" data-clipboard-target="long-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p>
<p><label for="shorturl"><?php yourls_e( 'Short URL:', 'isq_translation'); ?></label> <input type="text" name="shorturl" onclick="this.select();" onload="this.select();" value="<?php echo $shorturl; ?>" id="short-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="short-copy" data-clipboard-target="short-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p> <p><label for="shorturl"><?php yourls_e( 'Short URL:', 'isq_translation'); ?></label> <input type="text" name="shorturl" onclick="this.select();" onload="this.select();" value="<?php echo $shorturl; ?>" id="short-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="short-copy" data-clipboard-target="short-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p>
<p><label for="stats"><?php /* translators: This is short for statistics */ yourls_e( 'Stats:', 'isq_translation'); ?></label> <input type="text" name="stats" onclick="this.select();" onload="this.select();" value="<?php echo $shorturl . '+'; ?>" id="stats-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="stats-copy" data-clipboard-target="stats-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p> <p><label for="stats"><?php /* translators: This is short for statistics */ yourls_e( 'Stats:', 'isq_translation'); ?></label> <input type="text" name="stats" onclick="this.select();" onload="this.select();" value="<?php echo $shorturl . '+'; ?>" id="stats-copy"> <?php if (!empty(ISQ::$general['clipboard'])) { echo '<button id="stats-copy" data-clipboard-target="stats-copy" class="desktop-only">' . yourls__( 'Copy to Clipboard', 'isq-translation' ) . '</button>'; } ?> </p>
<p class="desktop-only"><?php yourls_e( 'Click on a link and press Ctrl+C to quickly copy it.', 'isq_translation'); ?></p> <p class="desktop-only"><?php yourls_e( 'Click on a link and press Ctrl+C to quickly copy it.', 'isq_translation'); ?></p>