forked from Korbs/4get
281 lines
6 KiB
PHP
281 lines
6 KiB
PHP
<?php
|
|
|
|
class bot_protection{
|
|
|
|
public function __construct($frontend, $get, $filters, $page, $output){
|
|
|
|
// check if we want captcha
|
|
if(config::BOT_PROTECTION !== 1){
|
|
|
|
apcu_inc("real_requests");
|
|
if($output === true){
|
|
$frontend->loadheader(
|
|
$get,
|
|
$filters,
|
|
$page
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
|
|
/*
|
|
Validate cookie, if it exists
|
|
*/
|
|
if(isset($_COOKIE["pass"])){
|
|
|
|
if(
|
|
// check if key is not malformed
|
|
preg_match(
|
|
'/^k[0-9]+\.[A-Za-z0-9_]{20}$/',
|
|
$_COOKIE["pass"]
|
|
) &&
|
|
// does key exist
|
|
apcu_exists($_COOKIE["pass"])
|
|
){
|
|
|
|
// exists, increment counter
|
|
$inc = apcu_inc($_COOKIE["pass"]);
|
|
|
|
// we start counting from 1
|
|
// when it has been incremented to 102, it has reached
|
|
// 100 reqs
|
|
if($inc >= config::MAX_SEARCHES + 2){
|
|
|
|
// reached limit, delete and give captcha
|
|
apcu_delete($_COOKIE["pass"]);
|
|
}else{
|
|
|
|
// the cookie is OK! dont die() and give results
|
|
apcu_inc("real_requests");
|
|
|
|
if($output === true){
|
|
$frontend->loadheader(
|
|
$get,
|
|
$filters,
|
|
$page
|
|
);
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if($output === false){
|
|
|
|
http_response_code(401); // forbidden
|
|
echo json_encode([
|
|
"status" => "The \"pass\" token in your cookies is missing or has expired!!"
|
|
]);
|
|
die();
|
|
}
|
|
|
|
/*
|
|
Validate form data
|
|
*/
|
|
$lines =
|
|
explode(
|
|
"\r\n",
|
|
file_get_contents("php://input")
|
|
);
|
|
|
|
$invalid = false;
|
|
$answers = [];
|
|
$key = false;
|
|
$error = "";
|
|
|
|
foreach($lines as $line){
|
|
|
|
$line = explode("=", $line, 2);
|
|
|
|
if(count($line) !== 2){
|
|
|
|
$invalid = true;
|
|
break;
|
|
}
|
|
|
|
preg_match(
|
|
'/^c\[([0-9]+)\]$/',
|
|
$line[0],
|
|
$regex
|
|
);
|
|
|
|
if(
|
|
$line[1] != "on" ||
|
|
!isset($regex[0][1])
|
|
){
|
|
|
|
// check if its the v key
|
|
if(
|
|
$line[0] == "v" &&
|
|
preg_match(
|
|
'/^c[0-9]+\.[A-Za-z0-9_]{20}$/',
|
|
$line[1]
|
|
)
|
|
){
|
|
|
|
$key = apcu_fetch($line[1]);
|
|
apcu_delete($line[1]);
|
|
}
|
|
break;
|
|
}
|
|
|
|
$regex = (int)$regex[1];
|
|
|
|
if(
|
|
$regex >= 16 ||
|
|
$regex <= -1
|
|
){
|
|
|
|
$invalid = true;
|
|
break;
|
|
}
|
|
|
|
$answers[] = $regex;
|
|
}
|
|
|
|
if(
|
|
!$invalid &&
|
|
$key !== false // has captcha been gen'd?
|
|
){
|
|
$check = count($key);
|
|
|
|
// validate answer
|
|
for($i=0; $i<count($answers); $i++){
|
|
|
|
if(in_array($answers[$i], $key)){
|
|
|
|
$check--;
|
|
}else{
|
|
|
|
$check = -1;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if($check === 0){
|
|
|
|
// we passed the captcha
|
|
// set cookie
|
|
$inc = apcu_inc("cookie");
|
|
|
|
$key = "k" . $inc . "." . $this->randomchars();
|
|
|
|
apcu_inc($key, 1, $stupid, 86400);
|
|
|
|
apcu_inc("real_requests");
|
|
|
|
setcookie(
|
|
"pass",
|
|
$key,
|
|
[
|
|
"expires" => time() + 86400, // expires in 24 hours
|
|
"samesite" => "Lax",
|
|
"path" => "/"
|
|
]
|
|
);
|
|
|
|
$frontend->loadheader(
|
|
$get,
|
|
$filters,
|
|
$page
|
|
);
|
|
return;
|
|
|
|
}else{
|
|
|
|
$error = "<div class=\"quote\">You were <a href=\"https://www.youtube.com/watch?v=e1d7fkQx2rk\" target=\"_BLANK\" rel=\"noreferrer nofollow\">kicked out of Mensa.</a> Please try again.</div>";
|
|
}
|
|
}
|
|
|
|
$key = "c" . apcu_inc("captcha_gen", 1) . "." . $this->randomchars();
|
|
|
|
$payload = [
|
|
"timetaken" => microtime(true),
|
|
"class" => "",
|
|
"right-left" => "",
|
|
"right-right" => "",
|
|
"left" =>
|
|
'<div class="infobox">' .
|
|
'<h1>IQ test</h1>' .
|
|
'IQ test has been enabled due to bot abuse on the network.<br>' .
|
|
'Solving this IQ test will let you make 100 searches today. I will add an invite system to bypass this soon...' .
|
|
$error .
|
|
'<form method="POST" enctype="text/plain" autocomplete="off">' .
|
|
'<div class="captcha-wrapper">' .
|
|
'<div class="captcha">' .
|
|
'<img src="captcha.php?v=' . $key . '" alt="Captcha image">' .
|
|
'<div class="captcha-controls">' .
|
|
'<input type="checkbox" name="c[0]" id="c0">' .
|
|
'<label for="c0"></label>' .
|
|
'<input type="checkbox" name="c[1]" id="c1">' .
|
|
'<label for="c1"></label>' .
|
|
'<input type="checkbox" name="c[2]" id="c2">' .
|
|
'<label for="c2"></label>' .
|
|
'<input type="checkbox" name="c[3]" id="c3">' .
|
|
'<label for="c3"></label>' .
|
|
'<input type="checkbox" name="c[4]" id="c4">' .
|
|
'<label for="c4"></label>' .
|
|
'<input type="checkbox" name="c[5]" id="c5">' .
|
|
'<label for="c5"></label>' .
|
|
'<input type="checkbox" name="c[6]" id="c6">' .
|
|
'<label for="c6"></label>' .
|
|
'<input type="checkbox" name="c[7]" id="c7">' .
|
|
'<label for="c7"></label>' .
|
|
'<input type="checkbox" name="c[8]" id="c8">' .
|
|
'<label for="c8"></label>' .
|
|
'<input type="checkbox" name="c[9]" id="c9">' .
|
|
'<label for="c9"></label>' .
|
|
'<input type="checkbox" name="c[10]" id="c10">' .
|
|
'<label for="c10"></label>' .
|
|
'<input type="checkbox" name="c[11]" id="c11">' .
|
|
'<label for="c11"></label>' .
|
|
'<input type="checkbox" name="c[12]" id="c12">' .
|
|
'<label for="c12"></label>' .
|
|
'<input type="checkbox" name="c[13]" id="c13">' .
|
|
'<label for="c13"></label>' .
|
|
'<input type="checkbox" name="c[14]" id="c14">' .
|
|
'<label for="c14"></label>' .
|
|
'<input type="checkbox" name="c[15]" id="c15">' .
|
|
'<label for="c15"></label>' .
|
|
'</div>' .
|
|
'</div>' .
|
|
'</div>' .
|
|
'<input type="hidden" name="v" value="' . $key . '">' .
|
|
'<input type="submit" value="Check IQ" class="captcha-submit">' .
|
|
'</form>' .
|
|
'</div>'
|
|
];
|
|
|
|
$frontend->loadheader(
|
|
$get,
|
|
$filters,
|
|
$page
|
|
);
|
|
|
|
echo $frontend->load("search.html", $payload);
|
|
die();
|
|
}
|
|
|
|
private function randomchars(){
|
|
|
|
$chars =
|
|
array_merge(
|
|
range("A", "Z"),
|
|
range("a", "z"),
|
|
range(0, 9)
|
|
);
|
|
|
|
$chars[] = "_";
|
|
|
|
$c = count($chars) - 1;
|
|
|
|
$key = "";
|
|
|
|
for($i=0; $i<20; $i++){
|
|
|
|
$key .= $chars[random_int(0, $c)];
|
|
}
|
|
|
|
return $key;
|
|
}
|
|
}
|