<?php
header("HTTP/1.0 200 OK");
header("HTTP/1.1 200 OK");
header("Cache-Control: no-cache, must-revalidate, max-age=0");
header("Expires: 0");
header("Pragma: no-cache");
header("Content-type: text/html; charset=UTF-8");
$ajax_message = array('code' => 0, 'message' => '');
function escapeJsonString($value) { // экранирование строки JSON
// list from json.org: (\b backspace, \f formfeed)
$escapers = array("\\", "/", "\"", "\n", "\r", "\t", "\x08", "\x0c");
$replacements = array("\\\\", "\\/", "\\\"", "\\n", "\\r", "\\t", "\\f", "\\b");
$result = str_replace($escapers, $replacements, $value);
return $result;
}
function CaptchaCheck($exit_mess = 2, $ajaxExit = true, $post_name = 'antibot')
{
if (!isset($_SESSION))
session_start();
$input = Filter::input($post_name, 'post', 'int', true);
if (empty($_SESSION['code']) or
$input === false or
$_SESSION['code'] != $input) {
if (isset($_SESSION['code']))
unset($_SESSION['code']);
if ($ajaxExit)
aExit($exit_mess, lng('CAPTCHA_FAIL'));
return false;
}
unset($_SESSION['code']);
return true;
}
function aExit($code, $mess = 'error')
{
global $ajax_message;
$iframe = Filter::input('json_iframe', 'post', 'bool');
$ajax_message['code'] = $code;
$ajax_message['message'] = ($mess == 'error') ? $mess . ' code: ' . $code : $mess;
if (defined('JSON_HEX_QUOT'))
$result = json_encode($ajax_message, JSON_HEX_QUOT | JSON_HEX_APOS | JSON_HEX_TAG);
else
$result = json_encode($ajax_message);
if ($iframe) {
$result = escapeJsonString($result);
$result = '<html><head><title>jnone</title><script type="text/javascript"> var json_response = "' . $result . '"</script></head><body></body></html>';
}
exit($result);
}