Scorm player grabber and decoder

scormgrab.js

var request = require("request");
var fs = require("fs");
headers = {
        'User-Agent': 'Mozilla/5.0 (X11; Linux i686) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.64 Safari/537.11',
        'Cookie': "MoodleSession=bd84957dad9ea0a2939fbcb0ffbd7116;",
        'Accept': '/',
        'Connection': 'keep-alive'
  };


var r = (url,root) => request({ url: url, headers:headers}, (a, b)=>
{
  quiz = b.body.match("quizJson = \"(.*)\"")[1];
  FC(quiz, (o) => add(root, o));  
});

function getTestId(i)
{
  console.log("test nr:"+i);

  request({url:"http://www.eautoskola.sk/lms/course/view.php?id=" + (120+i), headers:headers},
  (a, b)=>
  {
    var id = b.body.match('"contextid":(\\d+)')[1];
    var scoid=b.body.match("name=\"scoid\" value=\"(.*?)\"")[1];
    var cm=b.body.match("name=\"cm\" value=\"(.*?)\"")[1];
    getRedir(scoid, cm);
  });
}

function getRedir(scoid, cm)
{
  console.log("scoid="+scoid+" cm="+cm);

  request.post({
    url:     'http://www.eautoskola.sk/lms/mod/scorm/player.php',
    headers: headers,
    form:    { mode:"normal", newattempt:"on", display:"popup", scoid:scoid, cm:cm, currentorg:"mKmy0QaoJ66sI_organization" }
  }, function(error, response, body){
    var sesskey = body.match('"sesskey":"(.*?)"')[1];
    var url = body.match('\\\\"url\\\\":\\\\"(.*?)\\\\"')[1];
    var target = "http://www.eautoskola.sk/lms/mod/scorm/player.php?"+url+"&sesskey="+sesskey;
    var target = "http://www.eautoskola.sk/lms/mod/scorm/loadSCO.php?"+url;
    getPlayer(target);
  });
}

function getPlayer(url)
{
  request({url:url, headers:headers}, (a,b)=>
  {
    target = b.body.match("location = \"(.*?)\"")[1];
    var root = target;
    root = root.replace("/res/index.html", "/");
    if (target.indexOf("/index.html") == -1)
      target += "res/index.html";
        console.log("test target:"+target);
        r(target, root);
  });
}

var all = {};
function add(id, json)
{
  var json = JSON.parse(json);
  all[id]=(json);
  console.log("got "+id + " name = "+json.T)

  done();
}

var current = 1;
function done()
{ 
  current ++;
  if (current >61)
  {
    fs.writeFileSync("quiz.js", "quiz="+JSON.stringify(all), "utf8");
    console.log("Hotovo!!!"); 
    return;
  }
  main();
}

function main()
{
  if (current == 3)
    done();
  else
    getTestId(current);
}

main();

// decoder

var Ye = null;

function FC(a, b) {
        for (var c = gf(a), c = (new EC(c)).NT(), d = [], e = 0, g, h, k, m = -1, p = c.length; e < p; )
            (g = c[e]) ? 128 > g ? (d[++m] = String.fromCharCode(g),
            ++e) : 191 < g && 224 > g ? (h = c[e + 1],
            d[++m] = String.fromCharCode((g & 31) << 6 | h & 63),
            e += 2) : (h = c[e + 1],
            k = c[e + 2],
            d[++m] = String.fromCharCode((g & 15) << 12 | (h & 63) << 6 | k & 63),
            e += 3) : ++e;
        c = d.join("");
        b(c)
    }

var EC = function() {
        function a() {
            throw Error("stream error");
        }
        function b(a) {
            return "undefined" == typeof a
        }
        function c(b) {
            var c = 0
              , d = b[c++]
              , e = b[c++];
            (-1 == d || -1 == e || 8 != (d & 15) || 0 != ((d << 8) + e) % 31 || e & 32) && a();
            this.aF = b;
            this.Hr = c;
            this.Su = this.Yu = this.Zu = 0;
            this.oF = !1;
            this.My = null
        }
        var d = [], e = [], g = [], h, k;
        (function() {
            var a = [], b, c = 2;
            for (b = 0; 8 > b; ++b)
                a.push(c),
                c += 1 << (b >> 1);
            for (b = 0; 3 > b; ++b)
                d.push(b + 16);
            for (b = 0; 7 >= b; ++b)
                d.push((8 - b) % 8),
                d.push(8 + b);
            for (b = 1; 3 > b; ++b)
                e.push(b);
            for (b = 0; 28 > b; ++b) {
                var h = b >> 1 << 16
                  , c = b % 8
                  , h = h + ((a[c] << (b - c) / 2) + 1);
                e.push(h)
            }
            for (b = 3; 7 > b; ++b)
                g.push(b);
            c = 7;
            for (b = 0; 24 > b; ++b)
                a = b >> 2,
                h = (a << 16) + c,
                c += 1 << a,
                g.push(h);
            for (b = 0; 3 > b; ++b)
                g.push(258)
        }
        )();
        c.prototype.nF = function(a) {
            var b = this.My
              , c = b ? b.length : 0;
            if (a < c)
                return b;
            for (var d = 1024; d < a; )
                d <<= 1;
            a = Array(d);
            for (d = 0; d < c; ++d)
                a[d] = b[d];
            return this.My = a
        }
        ;
        c.prototype.NT = function() {
            for (; !this.oF; )
                this.VU();
            return this.My.slice(0, this.Su)
        }
        ;
        c.prototype.Rm = function(c) {
            for (var d = this.Zu, e = this.Yu, g = this.aF, h = this.Hr, k; d < c; )
                b(k = g[h++]) && a(),
                e |= k << d,
                d += 8;
            this.Yu = e >> c;
            this.Zu = d - c;
            this.Hr = h;
            return e & (1 << c) - 1
        }
        ;
        c.prototype.vF = function(c) {
            var d = c[0]
              , e = c[1];
            c = this.Zu;
            for (var g = this.Yu, h = this.aF, k = this.Hr; c < e; ) {
                var m;
                b(m = h[k++]) && a();
                g |= m << c;
                c += 8
            }
            e = d[g & (1 << e) - 1];
            d = e >> 16;
            e &= 65535;
            (0 == c || c < d || 0 == d) && a();
            this.Yu = g >> d;
            this.Zu = c - d;
            this.Hr = k;
            return e
        }
        ;
        c.prototype.lv = function(a) {
            for (var b = a.length, c = 0, d = 0; d < b; ++d)
                a[d] > c && (c = a[d]);
            for (var e = 1 << c, g = Array(e), h = 1, k = 0, m = 2; h <= c; ++h,
            k <<= 1,
            m <<= 1)
                for (var Ba = 0; Ba < b; ++Ba)
                    if (a[Ba] == h) {
                        for (var zf = 0, br = k, d = 0; d < h; ++d)
                            zf = zf << 1 | br & 1,
                            br >>= 1;
                        for (d = zf; d < e; d += m)
                            g[d] = h << 16 | Ba;
                        ++k
                    }
            return [g, c]
        }
        ;
        c.prototype.VU = function() {
            function c(a, b, c, d, e) {
                for (a = a.Rm(c) + d; 0 < a--; )
                    b[O++] = e
            }
            var p = this.Rm(3);
            p & 1 && (this.oF = !0);
            p >>= 1;
            if (0 == p) {
                var t = this.aF, v = this.Hr, y;
                b(y = t[v++]) && a();
                var z = y;
                b(y = t[v++]) && a();
                z |= y << 8;
                b(y = t[v++]) && a();
                p = y;
                b(y = t[v++]) && a();
                (p | y << 8) != (~z & 65535) && a();
                this.Zu = this.Yu = 0;
                y = this.Su;
                p = this.nF(y + z);
                this.Su = z = y + z;
                for (var I = y; I < z; ++I) {
                    if (b(y = t[v++])) {
                        this.oF = !0;
                        break
                    }
                    p[I] = y
                }
                this.Hr = v
            } else {
                if (1 == p) {
                    if (!h) {
                        for (var t = Array(288), O = 0; 143 >= O; ++O)
                            t[O] = 8;
                        for (; 255 >= O; ++O)
                            t[O] = 9;
                        for (; 279 >= O; ++O)
                            t[O] = 7;
                        for (; 287 >= O; ++O)
                            t[O] = 8;
                        h = this.lv(t);
                        p = Array(31);
                        for (O = 0; 32 > O; ++O)
                            p[O] = 5;
                        k = this.lv(p);
                        k[0][15] = 0;
                        k[0][31] = 0
                    }
                    v = h;
                    y = k
                } else if (2 == p) {
                    p = this.Rm(5) + 257;
                    y = this.Rm(5) + 1;
                    v = this.Rm(4) + 4;
                    t = Array(d.length);
                    for (O = 0; O < v; )
                        t[d[O++]] = this.Rm(3);
                    v = this.lv(t);
                    O = t = 0;
                    y = p + y;
                    for (z = Array(y); O < y; )
                        I = this.vF(v),
                        16 == I ? c(this, z, 2, 3, t) : 17 == I ? c(this, z, 3, 3, t = 0) : 18 == I ? c(this, z, 7, 11, t = 0) : z[O++] = t = I;
                    v = this.lv(z.slice(0, p));
                    y = this.lv(z.slice(p, y))
                } else
                    a();
                z = (p = this.My) ? p.length : 0;
                for (I = this.Su; ; ) {
                    var ca = this.vF(v);
                    if (256 > ca)
                        I + 1 >= z && (p = this.nF(I + 1),
                        z = p.length),
                        p[I++] = ca;
                    else {
                        if (256 == ca) {
                            this.Su = I;
                            break
                        }
                        var ca = ca - 257
                          , ca = g[ca]
                          , Ba = ca >> 16;
                        0 < Ba && (Ba = this.Rm(Ba));
                        t = (ca & 65535) + Ba;
                        ca = this.vF(y);
                        ca = e[ca];
                        Ba = ca >> 16;
                        0 < Ba && (Ba = this.Rm(Ba));
                        ca = (ca & 65535) + Ba;
                        I + t >= z && (p = this.nF(I + t),
                        z = p.length);
                        for (Ba = 0; Ba < t; ++Ba,
                        ++I)
                            p[I] = p[I - ca]
                    }
                }
            }
        }
        ;
        return c
    }();

function gf(a) {
        var b = [];
        ff(a, function(a) {
            b.push(a)
        });
        return b
    }
    function ff(a, b) {
        function c(b) {
            for (; d < a.length; ) {
                var c = a.charAt(d++)
                  , e = Ze[c];
                if (null != e)
                    return e;
                if (!/^[\s\xa0]*$/.test(c))
                    throw Error("Unknown base64 encoding at char: " + c);
            }
            return b
        }
        df();
        for (var d = 0; ; ) {
            var e = c(-1)
              , g = c(0)
              , h = c(64)
              , k = c(64);
            if (64 === k && -1 === e)
                break;
            b(e << 2 | g >> 4);
            64 != h && (b(g << 4 & 240 | h >> 2),
            64 != k && b(h << 6 & 192 | k))
        }
    }

    function df() {
        if (!Ye) {
            Ye = {};
            Ze = {};
            for (var a = 0; 65 > a; a++)
                Ye[a] = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=".charAt(a),
                Ze[Ye[a]] = a,
                62 <= a && (Ze["ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_.".charAt(a)] = a)
        }
    }