toefl

README.md

Chrome

1. Allow unsafe scripts

2. Chrome extension: Allow CORS https://chrome.google.com/webstore/detail/allow-control-allow-origi/nlfbmbojpeacfghkpbjhddihlkkiljbi

3. Chrome extension: User javascript https://chrome.google.com/webstore/detail/user-javascript-and-css/nbhcbdghjpllgmfilhnhkllmkecfmpld

4. Dependency: xhook https://github.com/jpillora/xhook

5. Dependency: blobUtil https://github.com/nolanlawson/blob-util

main.js

const userData = {
    "username": "JohnTang",
    "password": "tjp1015967940",
    "softid": "1",
    "softkey": "b40ffbee5c1cf4e38028c197eb2fc751",

    // Captcha type: 4 letters, http://www.ruokuai.com/home/pricetype
    "typeid":"2040"
};
const API_URL = "http://api.ruokuai.com/create.json";

xhook.after((req, resp) => {
    if(req.method == "POST" && req.url.match(/bookSeat/)) {
        let text = resp.text;
        if (text && text.indexOf("验证码错误") != -1) {
            // retry
            RequestOCR();
        }
    }
});

async function RequestOCR() {
    const formData = new FormData();
    
    for (const k in userData) {
        const v = userData[k];
        formData.append(k, v);
    }
    
    let imgBlob = await getCaptchaBlob();
    formData.append("image", imgBlob, "1.jpg");
    
    const options = {
        method: "POST",
        body: formData,
        headers: {
            "User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Firefox/24.0"
        }
    }

    fetch(API_URL, options)
        .then(resp => {
            return resp.json();
        })
        .then(json => {
            let result = data["Result"];
            console.log(result);
            if (result) {
                CommitCaptcha(result);
            }
        })
        .catch(err => {
            console.log(err);
        });
}


function __chottoMatte(n_millisecond) {
        return new Promise(resolve => setTimeout(resolve, n_millisecond));
}

async function CommitCaptcha(ocrResult) {
    const CAPTCHA_INPUT_SELECTOR  = "#verifyCode";
    const CAPTCHA_COMMIT_SELECTOR_1 = "#btnOrderBookSeat";
    const CAPTCHA_COMMIT_SELECTOR_2 = "div.layui-layer-btn.layui-layer-btn- > a.layui-layer-btn0";
    
    let e = document.querySelector(CAPTCHA_INPUT_SELECTOR);
    e.value = ocrResult;

    document.querySelector(CAPTCHA_COMMIT_SELECTOR_1).click();
    await __chottoMatte(500);
    document.querySelector(CAPTCHA_COMMIT_SELECTOR_2).click();
}

async function getCaptchaBlob() {
    const CAPTCHA_SELECTOR = "#chkImg";
    const e = document.querySelector(CAPTCHA_SELECTOR);

    // trigger captcha image reload
    e.click();
    await __chottoMatte(1000);

    // TODO: safety check
        // blog-util
        // captcha node

    // WARN: do not omit `Anonymous` param
        // Refer: https://github.com/nolanlawson/blob-util#imgsrctoblob
        // `for CORS-enabled images, set this to 'Anonymous' to avoid "tainted canvas" errors`
    return await blobUtil.imgSrcToBlob(e.src, "image/jpeg", "Anonymous");
}

async function __test() {
    let blob = await getCaptchaBlob();
    console.log(blob);
}

let _context = {
    loggedIn: false
};

async function PageRedirect() {
    // hard-coded url
    const QUERY_SEAT_PAGE = "https://toefl.etest.net.cn/myHome/8462936/index#!/createOrder/querySeat";
    const HOME_PAGE = "https://toefl.etest.net.cn/";

    // user is logged out
    if (document.title.indexOf("请重新登录") != -1) {
        location.href = HOME_PAGE;
        // returned
    }

    let current = location.href;
    if (current != QUERY_SEAT_PAGE) {
        location.href = QUERY_SEAT_PAGE;
    }

    $("#wg_west > li:nth-child(12) > a").click();
    await __chottoMatte(300);
    $("span.layui-layer-setwin > a").click();
    await __chottoMatte(300);
}

async function loop() {
    // 1. go to queryOrder page
    PageRedirect();

    // 2. 
    Query();
    
}

// regForm/showRegForm

query.js

const AVAILABLE_STATUS_SELECTOR = "#qrySeatResult > div > table > tbody > tr > td:nth-child(4)";
const CITY_SELECTOR             = "#centerProvinceCity";
const DATE_SELECTOR             = "#testDays";
const SEARCH_BUTTON_SELECTOR    = "#btnQuerySeat"

let running = true;

function TriggerSearch() {
    document.querySelector(SEARCH_BUTTON_SELECTOR).click();
}

function SetCity(n) {
    document.querySelector(CITY_SELECTOR).value = n;
}

function SetDate(d) {
    document.querySelector(DATE_SELECTOR).value = d;
}

function isAvailable(node) {
    let keyword = "bookSeat"
    let isHTMLNode = (typeof node == "object") &&
                     ("nodeType" in node) &&
                     (node.nodeType === 1);
    return isHTMLNode && (node.innerHTML.indexOf(keyword) != -1);
}

function Check() {
    let nodes = document.querySelectorAll(AVAILABLE_STATUS_SELECTOR);
    for (let node of nodes) {
        if (isAvailable(node)) {
            console.log(node);
            return true;
        }
    }
    return false;
}

function ChottoMatte(n_millisecond) {
    return new Promise(resolve => setTimeout(resolve, n_millisecond));
}

function Notify() {
    new Notification("Found!");
    // alert("Found!");
}

async function loop() {
    let city = ["BEIJING"], 
        date = ["2018-11-11", "2018-11-17", "2019-06-16"];
    let permutations = [city, date].reduce((a, b) => a.reduce((r, v) => r.concat(b.map(w => [].concat(v, w))), []));
    let foundAvailable = false;

    for (const item of permutations) {
        let [city, date] = item; 

        if (!running) {
            return;
        }

        SetCity(city);
        SetDate(date);
        TriggerSearch();

        // wait for HTTP request
        await ChottoMatte(1000);
        if (foundAvailable = Check()) {
            break;
        }

        // throttle request frequency
        await ChottoMatte(3000);
    }

    if (foundAvailable) {
        Notify();
    } else {
        await loop();
    }
}

function LoopStop() {
    running = false;
    console.log("Stopped.");
}

async function LoopStart() {
    Notification.requestPermission();
    console.log("Started.");
    await loop();
}