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authorJeroen van Meeuwen (Kolab Systems) <vanmeeuwen@kolabsys.com>2015-01-21 00:58:22 (GMT)
committerJeroen van Meeuwen (Kolab Systems) <vanmeeuwen@kolabsys.com>2015-01-21 00:58:22 (GMT)
commit4d0cb3cb7d11b5a7389d91ff6329d410f40ecbdd (patch)
treee5936fe3c2dc817f8056feb928a0e15eb189ab38
parent379174d2d08bea1c0b9c7308275612ff2f9ea389 (diff)
downloadkolab-wap-4d0cb3cb7d11b5a7389d91ff6329d410f40ecbdd.tar.gz
Update recaptcha to the latest version
-rw-r--r--lib/recaptchalib.php331
1 files changed, 97 insertions, 234 deletions
diff --git a/lib/recaptchalib.php b/lib/recaptchalib.php
index 32c4f4d..ae467a2 100644
--- a/lib/recaptchalib.php
+++ b/lib/recaptchalib.php
@@ -1,17 +1,15 @@
<?php
-/*
+/**
* This is a PHP library that handles calling reCAPTCHA.
* - Documentation and latest version
- * http://recaptcha.net/plugins/php/
+ * https://developers.google.com/recaptcha/docs/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
+ * @copyright Copyright (c) 2014, Google Inc.
+ * @link http://www.google.com/recaptcha
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -33,245 +31,110 @@
*/
/**
- * 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 $data
- * @param int port
- * @return array response
+ * A ReCaptchaResponse is returned from checkAnswer().
*/
-function _recaptcha_http_post($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;
+class ReCaptchaResponse
+{
+ public $success;
+ public $errorCodes;
}
-
-
-/**
- * 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, $use_ssl = false)
+class ReCaptcha
{
- if ($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;
+ private static $_signupUrl = "https://www.google.com/recaptcha/admin";
+ private static $_siteVerifyUrl =
+ "https://www.google.com/recaptcha/api/siteverify?";
+ private $_secret;
+ private static $_version = "php_1.0";
+
+ /**
+ * Constructor.
+ *
+ * @param string $secret shared secret between site and ReCAPTCHA server.
+ */
+ function ReCaptcha($secret)
+ {
+ if ($secret == null || $secret == "") {
+ die("To use reCAPTCHA you must get an API key from <a href='"
+ . self::$_signupUrl . "'>" . self::$_signupUrl . "</a>");
}
-
- $errorpart = "";
- if ($error) {
- $errorpart = "&amp;error=" . $error;
+ $this->_secret=$secret;
+ }
+
+ /**
+ * Encodes the given data into a query string format.
+ *
+ * @param array $data array of string elements to be encoded.
+ *
+ * @return string - encoded request.
+ */
+ private function _encodeQS($data)
+ {
+ $req = "";
+ foreach ($data as $key => $value) {
+ $req .= $key . '=' . urlencode(stripslashes($value)) . '&';
}
- 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;
+ // Cut the last '&'
+ $req=substr($req, 0, strlen($req)-1);
+ return $req;
+ }
+
+ /**
+ * Submits an HTTP GET to a reCAPTCHA server.
+ *
+ * @param string $path url path to recaptcha server.
+ * @param array $data array of parameters to be sent.
+ *
+ * @return array response
+ */
+ private function _submitHTTPGet($path, $data)
+ {
+ $req = $this->_encodeQS($data);
+ $response = file_get_contents($path . $req);
+ return $response;
+ }
+
+ /**
+ * Calls the reCAPTCHA siteverify API to verify whether the user passes
+ * CAPTCHA test.
+ *
+ * @param string $remoteIp IP address of end user.
+ * @param string $response response string from recaptcha verification.
+ *
+ * @return ReCaptchaResponse
+ */
+ public function verifyResponse($remoteIp, $response)
+ {
+ // Discard empty solution submissions
+ if ($response == null || strlen($response) == 0) {
+ $recaptchaResponse = new ReCaptchaResponse();
+ $recaptchaResponse->success = false;
+ $recaptchaResponse->errorCodes = 'missing-input';
+ return $recaptchaResponse;
}
- $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];
+ $getResponse = $this->_submitHttpGet(
+ self::$_siteVerifyUrl,
+ array (
+ 'secret' => $this->_secret,
+ 'remoteip' => $remoteIp,
+ 'v' => self::$_version,
+ 'response' => $response
+ )
+ );
+ $answers = json_decode($getResponse, true);
+ $recaptchaResponse = new ReCaptchaResponse();
+
+ if (trim($answers ['success']) == true) {
+ $recaptchaResponse->success = true;
+ } else {
+ $recaptchaResponse->success = false;
+ $recaptchaResponse->errorCodes = $answers [error-codes];
}
- 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));
+ return $recaptchaResponse;
+ }
}
-/* Mailhide related code */
-
-function _recaptcha_aes_encrypt($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]);
-
-}
-
-
?>