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authorlolcat <will@lolcat.ca>2024-02-17 23:22:19 -0500
committerlolcat <will@lolcat.ca>2024-02-17 23:22:19 -0500
commitaddc5a14a93547f630f23e5b6a79cffa2e37d71a (patch)
treea9163ba3a2e24c3c493cdde95e506c0e7e8a772d /lib/captcha_gen.php
parentedc917f5ee984160a0eef436dabd51696d675964 (diff)
boobs
Diffstat (limited to 'lib/captcha_gen.php')
-rw-r--r--lib/captcha_gen.php336
1 files changed, 0 insertions, 336 deletions
diff --git a/lib/captcha_gen.php b/lib/captcha_gen.php
deleted file mode 100644
index abcab7a..0000000
--- a/lib/captcha_gen.php
+++ /dev/null
@@ -1,336 +0,0 @@
-<?php
-
-class captcha{
-
- 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(
- '/^c[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($inc >= 102){
-
- // reached limit, delete and give captcha
- apcu_delete($_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(429); // too many reqs
- 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 k
- if(
- $line[0] == "k" &&
- strpos($line[1], "c.") === 0
- ){
-
- $key = apcu_fetch($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
- ){
- $check = $key[1];
-
- // validate answer
- for($i=0; $i<count($key[0]); $i++){
-
- if(!in_array($i, $answers)){
-
- continue;
- }
-
- if($key[0][$i][0] == $key[2]){
-
- $check--;
- }else{
-
- // got a wrong answer
- $check = -1;
- break;
- }
- }
-
- if($check === 0){
-
- // we passed the captcha
- // set cookie
- $inc = apcu_inc("cookie");
- $chars =
- array_merge(
- range("A", "Z"),
- range("a", "z"),
- range(0, 9)
- );
-
- $c = count($chars) - 1;
-
- $key = "c" . $inc . ".";
-
- for($i=0; $i<20; $i++){
-
- $key .= $chars[random_int(0, $c)];
- }
-
- apcu_inc($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>";
- }
- }
-
- // get the positions for the answers
- // will return between 3 and 6 answer positions
- $range = range(0, 15);
- $answer_pos = [];
-
- array_splice($range, 0, 1);
-
- for($i=0; $i<random_int(3, 6); $i++){
-
- $answer_pos_tmp =
- array_splice(
- $range,
- random_int(
- 0,
- 14 - $i
- ),
- 1
- );
-
- $answer_pos[] = $answer_pos_tmp[0];
- }
-
- // choose a dataset
- $c = count(config::CAPTCHA_DATASET);
- $choosen = config::CAPTCHA_DATASET[random_int(0, $c - 1)];
- $choices = [];
-
- for($i=0; $i<$c; $i++){
-
- if(config::CAPTCHA_DATASET[$i][0] == $choosen[0]){
-
- continue;
- }
-
- $choices[] = config::CAPTCHA_DATASET[$i];
- }
-
- // generate grid data
- $grid = [];
-
- for($i=0; $i<16; $i++){
-
- if(in_array($i, $answer_pos)){
-
- $grid[] = $choosen;
- }else{
-
- $grid[] = $choices[random_int(0, count($choices) - 1)];
- }
- }
-
- $key = "c." . apcu_inc("captcha_gen", 1) . "." . random_int(0, 100000000);
-
- apcu_store(
- $key,
- [
- $grid,
- count($answer_pos),
- $choosen[0],
- false // has captcha been generated?
- ],
- 120 // we give user 2 minutes to get captcha, in case of network error
- );
-
- $payload = [
- "class" => "",
- "right-left" => "",
- "right-right" => "",
- "left" =>
- '<div class="infobox">' .
- '<h1>IQ test</h1>' .
- 'Due to getting hit with 20,000 bot requests per day, I had to put this up. Sorry.<br><br>' .
- 'Solving this captcha will allow you to make 100 searches today. I will add a way for legit users to bypass the captcha later. Sorry /g/tards!!' .
- $error .
- '<form method="POST" enctype="text/plain" autocomplete="off">' .
- '<div class="captcha-wrapper">' .
- '<div class="captcha">' .
- '<img src="captcha?k=' . $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="k" value="' . $key . '">' .
- '<input type="submit" value="Check IQ" class="captcha-submit">' .
- '</form>' .
- '</div>'
- ];
-
- http_response_code(429); // too many reqs
- $frontend->loadheader(
- $get,
- $filters,
- $page
- );
-
- echo $frontend->load("search.html", $payload);
- die();
- }
-}