diff options
author | lolcat <will@lolcat.ca> | 2024-02-17 23:22:19 -0500 |
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committer | lolcat <will@lolcat.ca> | 2024-02-17 23:22:19 -0500 |
commit | addc5a14a93547f630f23e5b6a79cffa2e37d71a (patch) | |
tree | a9163ba3a2e24c3c493cdde95e506c0e7e8a772d /lib/captcha_gen.php | |
parent | edc917f5ee984160a0eef436dabd51696d675964 (diff) |
boobs
Diffstat (limited to 'lib/captcha_gen.php')
-rw-r--r-- | lib/captcha_gen.php | 336 |
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(); - } -} |