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Temm / Anime4You AntiCaptcha

// ==UserScript==
// @name         Anime4You AntiCaptcha
// @version      4.8
// @description  Anime4You Captcha Skipper, Updated 25.12.2020.
// @author       Temm
// @license      MIT
// @run-at       document-start
// @match        *://*.anime4you.one/show/*
// @require      https://gist.githubusercontent.com/leumasme/325d8450fcb85e8fcdabd3d309ee7e69/raw/30ed399221369074fc68d60053e05b3ea4787d92/onbeforescriptexecute.js
// @require      https://gist.githubusercontent.com/leumasme/acfcb4fdaf0db307b2e0adb350ca34ed/raw/4484a8acba0aeb55f21512309b9d48bd098f8b72/captcheck-data.js
// @updateURL    https://openuserjs.org/meta/Temm/Anime4You_AntiCaptcha.meta.js
// ==/UserScript==
(() => {
  "use strict";

  var sentence = ["Bitte klicke auf ", "Finde folgendes Symbol: ", "Klick auf "];

  function loadImage(url) {
    return new Promise((resolve, reject) => {
      fetch(url, {
          //"mode": "no-cors"
        })
        .then((res) => res.blob())
        .then((blob) => {
          let reader = new FileReader();
          reader.onloadend = () => {
            console.log("[AC]: Reader Loadend")
            let img = new Image();
            img.onload = () => {
              resolve(img);
            }
            img.src = reader.result;
          }
          console.log(blob);
          reader.readAsDataURL(blob);
        })
    });
  }

  const getColor = (x, y, width, i) => { // stackoverflow magic
    const red = y * (width * 4) + x * 4;
    let [r, g, b, a] = [red, red + 1, red + 2, red + 3];
    return [i.data[r], i.data[g], i.data[b], i.data[a]];
  };

  let solution;

  (async () => {
    console.log("[AC] Alive");

    window.addEventListener('beforescriptexecute', (e) => {
      if (e.script.src.includes("Captcheck")) {
        e.preventDefault();
      }
    })

    let res = await fetch("https://captcha.anime4you.one/Captcheck/api.php?action=new");
    let j = await res.json();

    let hashes = j.answers;

    let q = j.question_i;
    let word;
    for (let b of sentence) {
      if (q.startsWith(b)) {
        word = q.substr(b.length, q.length - b.length);
        word = word.substr(0, word.length - 1).toLowerCase();
      }
    }
    let data = alldata[word];
    console.log("[AC]: Word is " + word)
    // https://captcha.anime4you.one/Captcheck/api.php?action=img&s=SESSION&c=ANSWER

    j.answers.forEach(async (e) => {
      var ctx = new OffscreenCanvas(64, 64).getContext("2d");

      let url = "https://captcha.anime4you.one/Captcheck/api.php?action=img&s=" + j.session + "&c=" + e;
      let img = await loadImage(url);
      ctx.drawImage(img, 0, 0);

      let imgData = ctx.getImageData(0, 0, 64, 64);

      let cnt = 0;

      for (let x = 0; x < 64; x++) {
        for (let y = 0; y < 64; y++) {
          let [r, g, b, a] = getColor(x, y, 64, imgData);
          let rgba = "R=" + r + " G=" + g + " B=" + b + " A=" + a;
          if (a != 0 && a != 255) {

            if (!data.includes(x + "/" + y)) {
              console.log("[AC]: Rejected on " + e + " for " + x + "/" + y + ": was " + rgba);
              return;
            }
            cnt++;
          }
        }
      }

      if (solution != null) {
        console.warn("[AC]: WARN: Multiple Solutions!?");
        if (solution[2] > cnt) return;
      }

      console.log("[AC]: Found Solution CNT=" + cnt + " : " + url)
      solution = [j.session, e, cnt];
    });
  })();

  let iv = setInterval(() => {
    if (document.getElementById("hosting") != null) {
      if (solution != null) {
        clearInterval(iv);
        var form = new FormData(document.getElementById("captchacheck"));
        form.set("captcheck_session_code", solution[0]);
        form.set("captcheck_selected_answer", solution[1]);
        fetch("/Captcheck/humancheck.php", {
          "method": "POST",
          "body": form
        }).then(d => d.text()).then(t => {
          $('#hosting').html(t);
        })
      }
      else console.log("[AC]: Awaiting Solve");
    }
    else console.log("[AC]: Awaiting Document Load");
  }, 200)
})();