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<?php
if (!defined('PUN')) {
exit;
}
class addon_funnyquestion extends flux_addon
{
public function __construct()
{
global $funnyquestion_disabled, $funnyquestion_hash, $funny_questions, $funnyquestion_timeout, $funnyquestion_remember, $funnyquestion_wait, $pun_user, $lang_funnyquestion;
!isset($funnyquestion_disabled) && $funnyquestion_disabled = false;
!isset($funnyquestion_hash) && $funnyquestion_hash = dirname(__FILE__);
!isset($funny_questions) && $funny_questions = array(
'What is the Ultimate Answer to the Ultimate Question of Life, The Universe, and Everything?' => '42'
);
!isset($funnyquestion_timeout) && $funnyquestion_timeout = 3600;
!isset($funnyquestion_remember) && $funnyquestion_remember = 3600 * 24;
!isset($funnyquestion_wait) && $funnyquestion_wait = 2;
if (file_exists(PUN_ROOT . 'lang/' . $pun_user['language'] . '/funnyquestion.php')) {
require PUN_ROOT . 'lang/' . $pun_user['language'] . '/funnyquestion.php';
} else {
require PUN_ROOT . 'lang/English/funnyquestion.php';
}
}
/**
* @param flux_addon_manager $manager
*/
public function register($manager)
{
$manager->bind('register_before_submit', array($this, 'print_funnyquestion'));
$manager->bind('quickpost_before_submit', array($this, 'print_funnyquestion'));
$manager->bind('post_before_submit', array($this, 'print_funnyquestion'));
$manager->bind('register_before_validation', array($this, 'set_error_on_check_funnyquestion'));
$manager->bind('post_before_validation', array($this, 'set_error_on_check_funnyquestion'));
}
public function print_funnyquestion()
{
echo $this->get_funnyquestion();
}
public function set_error_on_check_funnyquestion()
{
global $errors, $lang_funnyquestion;
$this->check_funnyquestion() || $errors[] = $lang_funnyquestion['wrong-answer'];
}
/**
* @param string $answer
* @return string
*/
private function normalize_funnyanswer($answer)
{
return preg_replace('/[^a-z0-9]/', '', strtolower($answer));
}
private function set_funnycookie()
{
global $funnyquestion_hash, $funnyquestion_remember;
$time = time();
forum_setcookie('funnyquestion_hash', sha1($time . get_remote_address() . $funnyquestion_hash),
$time + $funnyquestion_remember);
forum_setcookie('funnyquestion_time', $time, $time + $funnyquestion_remember);
}
/**
* @return bool
*/
private function has_funnycookie()
{
global $funnyquestion_hash, $funnyquestion_remember;
return (!empty($_COOKIE['funnyquestion_hash']) && !empty($_COOKIE['funnyquestion_time'])
&& time() - $funnyquestion_remember <= $_COOKIE['funnyquestion_time']
&& sha1($_COOKIE['funnyquestion_time'] . get_remote_address() . $funnyquestion_hash) == $_COOKIE['funnyquestion_hash']);
}
/**
* @return string
*/
private function get_funnyquestion()
{
global $funnyquestion_disabled, $funnyquestion_hash, $funny_questions, $lang_funnyquestion, $lang_common, $pun_user;
if ($funnyquestion_disabled || !$pun_user['is_guest'] || $this->has_funnycookie()) {
return '';
}
$time = time();
$question = array_rand($funny_questions);
# make sure the user is not able to tell us the question to answer
$hash = sha1($time . $question . $funnyquestion_hash);
return '<div class="inform">
<fieldset>
<legend>' . $lang_funnyquestion['question-label'] . '</legend>
<div class="infldset">
<input type="hidden" name="funnyquestion_time" value="' . $time . '" />
<input type="hidden" name="funnyquestion_hash" value="' . $hash . '" />
<label class="required">
<strong>' . $question . '<span>' . $lang_common['Required'] . '</span></strong><br />
<input type="text" name="funny_answer" value="" size="50" /><br />
</label>
</div>
</fieldset>
</div>';
}
/**
* @return bool
*/
private function check_funnyquestion()
{
global $funnyquestion_disabled, $funnyquestion_hash, $funnyquestion_timeout, $funnyquestion_wait, $funny_questions, $pun_user;
if ($funnyquestion_disabled || !$pun_user['is_guest'] || $this->has_funnycookie()) {
return true;
}
if (!empty($_POST['funnyquestion_time'])
&& !empty($_POST['funnyquestion_hash'])
&& !empty($_POST['funny_answer'])
) {
$now = time();
$time = $_POST['funnyquestion_time'];
$hash = $_POST['funnyquestion_hash'];
$user_answer = $this->normalize_funnyanswer($_POST['funny_answer']);
} else {
return false;
}
if ($now - $time > $funnyquestion_timeout) {
return false;
} elseif ($now - $time < $funnyquestion_wait) {
return false;
}
foreach ($funny_questions as $question => $answers) {
if (!is_array($answers)) {
$answers = array($answers);
}
foreach ($answers as $answer) {
if ($this->normalize_funnyanswer($answer) == $user_answer
&& $hash == sha1($time . $question . $funnyquestion_hash)
) {
$this->set_funnycookie();
return true;
}
}
}
return false;
}
}
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