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<?php
namespace LAM\PLUGINS\CAPTCHA;
use htmlElement;
use htmlScript;
/*
This code is part of LDAP Account Manager (http://www.ldap-account-manager.org/)
Copyright (C) 2022 - 2024 Roland Gruber
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/**
* hCaptcha provider.
*
* @author Roland Gruber
*/
/**
* hCaptcha provider.
*
* @package LAM\PLUGINS\CAPTCHA
*/
class HCaptcha implements CaptchaProvider {
/**
* @inheritDoc
*/
public function getLabel(): string {
return 'hCaptcha';
}
/**
* @inheritDoc
*/
public function getId(): string {
return 'hCaptcha';
}
/**
* @inheritDoc
*/
public function getCaptchaElement(string $siteKey): htmlElement {
return new htmlHCaptcha($siteKey);
}
/**
* @inheritDoc
*/
public function isValid(string $secretKey, string $siteKey): bool {
$url = 'https://hcaptcha.com/siteverify';
$vars = [
'secret' => $secretKey,
'response' => $_POST['h-captcha-response'],
'sitekey' => $siteKey];
$options = [
'http' => [
'header' => "Content-type: application/x-www-form-urlencoded\r\n",
'method' => 'POST',
'content' => http_build_query($vars)
]
];
$context = stream_context_create($options);
$result = file_get_contents($url, false, $context);
if ($result === FALSE) {
logNewMessage(LOG_ERR, 'hCaptcha validation failed, invalid server response.');
return false;
}
$responseJSON = json_decode($result);
logNewMessage(LOG_DEBUG, "hCaptcha result: " . $result);
return $responseJSON->{'success'} === true;
}
}
/**
* Creates a hCaptcha element.
*
* @package LAM\PLUGINS\CAPTCHA
*/
class htmlHCaptcha extends htmlElement {
/** site key */
private $key;
/**
* Constructor.
*
* @param String $key site key
*/
function __construct($key) {
$this->key = htmlspecialchars($key);
}
/**
* Prints the HTML code for this element.
*
* @param string $module Name of account module
* @param array $input List of meta-HTML elements
* @param array $values List of values which override the defaults in $input (name => value)
* @param boolean $restricted If true then no buttons will be displayed
* @param string $scope Account type
* @return array List of input field names and their type (name => type)
*/
function generateHTML($module, $input, $values, $restricted, $scope) {
$script = new htmlScript('https://js.hcaptcha.com/1/api.js');
$script->generateHTML($module, $input, $values, $restricted, $scope);
echo '<div class="h-captcha" data-sitekey="' . $this->key . '"></div>';
return [];
}
}
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