KR/utils/JDJRValidator.js

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JavaScript
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2023-07-27 16:14:01 +08:00
const http = require('http');
const stream = require('stream');
const zlib = require('zlib');
const vm = require('vm');
const { createCanvas, Image } = require('canvas');
Math.avg = function average() {
var sum= 0;
var len = this.length;
for (var i = 0; i < len; i++) {
sum += this[i];
}
return sum / len;
};
function sleep(timeout) {
return new Promise((resolve) => setTimeout(resolve, timeout));
}
const canvas = createCanvas();
const PUZZLE_GAP = 8;
const PUZZLE_PAD = 10;
class PuzzleRecognizer {
constructor(bg, patch, y) {
const imgBg = new Image();
const imgPatch = new Image();
imgBg.src = bg;
imgPatch.src = patch;
this.bg = imgBg;
this.patch = imgPatch;
this.y = y;
this.w = imgBg.naturalWidth;
this.h = imgBg.naturalHeight;
this.ctx = canvas.getContext('2d');
}
run() {
const { ctx, w, h } = this;
canvas.width = w;
canvas.height= h;
ctx.clearRect(0, 0, w, h);
ctx.drawImage(this.bg, 0, 0, w, h);
return this.recognize();
}
recognize() {
const { ctx, w: width } = this;
const { naturalHeight, naturalWidth } = this.patch;
const posY = this.y + PUZZLE_PAD + ((naturalHeight - PUZZLE_PAD) / 2) - (PUZZLE_GAP / 2);
const cData = ctx.getImageData(0, posY, width, PUZZLE_GAP).data;
const lumas = [];
for (let x = 0; x < width; x++) {
var sum = 0;
for (let y = 0; y < PUZZLE_GAP; y++) {
var idx = x * 4 + y * (width * 4);
var r = cData[idx];
var g = cData[idx + 1];
var b = cData[idx + 2];
var luma = 0.2126 * r + 0.7152 * g + 0.0722 * b;
sum += luma;
}
lumas.push(sum / PUZZLE_GAP);
}
const n = 2; // minium macroscopic image width (px)
const margin = naturalWidth - PUZZLE_PAD;
const diff = 20; // macroscopic brightness difference
const radius = PUZZLE_PAD;
for (let i = 0, len = lumas.length - 2*4; i < len; i++) {
const left = (lumas[i] + lumas[i+1]) / n;
const right = (lumas[i+2] + lumas[i+3]) / n;
const mi = margin + i;
const mLeft = (lumas[mi] + lumas[mi+1]) / n;
const mRigth = (lumas[mi+2] + lumas[mi+3]) / n;
if (left - right > diff && mLeft - mRigth < -diff) {
const pieces = lumas.slice(i+2,margin+i+2);
const median = pieces.sort((x1,x2)=>x1-x2)[20];
const avg = Math.avg(pieces);
if (median > left || median > mRigth) return;
if (avg > 100) return;
return i+n-radius;
}
}
return -1;
}
}
const DATA = {
"appId": "17839d5db83",
"scene": "cww",
"product": "embed",
"lang": "zh_CN",
};
const SERVER = 'iv.jd.com';
class JDJRValidator {
constructor() {
this.data = {};
this.x = 0;
this.t = Date.now();
this.c = {};
}
async run() {
const tryRecognize = async () => {
const x = await this.recognize();
if (x > 0) {
return x;
}
// retry
return await tryRecognize();
};
const puzzleX = await tryRecognize();
const pos = new MousePosFaker(puzzleX).run();
const d = getCoordinate(pos);
await sleep(pos[pos.length-1][2] - Date.now());
const result = await JDJRValidator.jsonp('/slide/s.html', { d, ...this.data });
if (result.message === 'success') {
this.c = result;
console.log(result);
} else {
console.count(JSON.stringify(result));
await sleep(300);
await this.run();
}
}
async recognize() {
const data = await JDJRValidator.jsonp('/slide/g.html', { e: '' });
const { bg, patch, y } = data;
const uri = 'data:image/png;base64,';
const re = new PuzzleRecognizer(uri+bg, uri+patch, y);
const puzzleX = re.run();
if (puzzleX > 0) {
this.data = {
c: data.challenge,
w: re.w,
e: '',
s: '',
o: '',
};
this.x = puzzleX;
}
return puzzleX;
}
async report(n) {
console.time('PuzzleRecognizer');
let count = 0;
for (let i = 0; i < n; i++) {
const x = await this.recognize();
if (x > 0) count ++;
if (i % 50 === 0) {
console.log('%f\%', (i/n)*100);
}
}
console.log('successful: %f\%', (count/n)*100);
console.timeEnd('PuzzleRecognizer');
}
static jsonp(api, data = {}) {
return new Promise((resolve, reject) => {
const fnId = `jsonp_${String(Math.random()).replace('.', '')}`;
const extraData = { callback: fnId };
const query = new URLSearchParams({ ...DATA, ...extraData, ...data }).toString();
const url = `http://${SERVER}${api}?${query}`;
const headers = {
'Accept': '*/*',
'Accept-Encoding': 'gzip,deflate,br',
'Accept-Language': 'zh-CN,en-US',
'Connection': 'keep-alive',
'Host': SERVER,
'Proxy-Connection': 'keep-alive',
'Referer': 'https://h5.m.jd.com/babelDiy/Zeus/2wuqXrZrhygTQzYA7VufBEpj4amH/index.html',
'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.77 Safari/537.36',
};
const req = http.get(url, { headers }, (response) => {
let res = response;
if (res.headers['content-encoding'] === 'gzip') {
const unzipStream = new stream.PassThrough();
stream.pipeline(
response,
zlib.createGunzip(),
unzipStream,
reject,
);
res = unzipStream;
}
res.setEncoding('utf8');
let rawData = '';
res.on('data', (chunk) => rawData += chunk);
res.on('end', () => {
try {
const ctx = {
[fnId]: (data) => ctx.data = data,
data: {},
};
vm.createContext(ctx);
vm.runInContext(rawData, ctx);
res.resume();
resolve(ctx.data);
} catch (e) {
reject(e);
}
});
});
req.on('error', reject);
req.end();
});
}
}
function getCoordinate(c) {
function string10to64(d) {
var c = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ-~".split("")
, b = c.length
, e = +d
, a = [];
do {
mod = e % b;
e = (e - mod) / b;
a.unshift(c[mod])
} while (e);
return a.join("")
}
function prefixInteger (a, b) {
return (Array(b).join(0) + a).slice(-b)
}
function pretreatment(d, c, b) {
var e = string10to64(Math.abs(d));
var a = "";
if (!b) {
a += (d > 0 ? "1" : "0")
}
a += prefixInteger(e, c);
return a
}
var b = new Array();
for (var e = 0; e < c.length; e++) {
if (e == 0) {
b.push(pretreatment(c[e][0] < 262143 ? c[e][0] : 262143, 3, true));
b.push(pretreatment(c[e][1] < 16777215 ? c[e][1] : 16777215, 4, true));
b.push(pretreatment(c[e][2] < 4398046511103 ? c[e][2] : 4398046511103, 7, true))
} else {
var a = c[e][0] - c[e - 1][0];
var f = c[e][1] - c[e - 1][1];
var d = c[e][2] - c[e - 1][2];
b.push(pretreatment(a < 4095 ? a : 4095, 2, false));
b.push(pretreatment(f < 4095 ? f : 4095, 2, false));
b.push(pretreatment(d < 16777215 ? d : 16777215, 4, true))
}
}
return b.join("")
}
const HZ = 60;
class MousePosFaker {
constructor(puzzleX) {
this.x = parseInt(Math.random()*20+20, 10);
this.y = parseInt(Math.random()*80+80, 10);
this.t = Date.now();
this.pos = [[this.x, this.y, this.t]];
this.minDuration = parseInt(1000 / HZ, 10);
// this.puzzleX = puzzleX;
this.puzzleX = puzzleX + parseInt(Math.random()*2-1, 10);
this.STEP = parseInt(Math.random()*6+5, 10);
this.DURATION = parseInt(Math.random()*7+14, 10)*100;
// [9,1600] [10,1400]
this.STEP = 9;
// this.DURATION = 2000;
//console.log(this.STEP, this.DURATION);
}
run() {
const perX = this.puzzleX / this.STEP;
const perDuration = this.DURATION / this.STEP;
const firstPos = [this.x-parseInt(Math.random()*6, 10), this.y+parseInt(Math.random()*11, 10), this.t];
this.pos.unshift(firstPos);
this.stepPos(perX, perDuration);
this.fixPos();
const reactTime = parseInt(60+Math.random()*100, 10);
const lastIdx = this.pos.length - 1;
const lastPos = [this.pos[lastIdx][0], this.pos[lastIdx][1], this.pos[lastIdx][2]+reactTime];
this.pos.push(lastPos);
return this.pos;
}
stepPos(x, duration) {
let n = 0;
const sqrt2 = Math.sqrt(2);
for (let i = 1; i <= this.STEP; i++) {
n += 1/i;
}
for (let i = 0; i < this.STEP; i++) {
x = this.puzzleX / (n*(i+1));
const currX = parseInt((Math.random()*30-15)+x, 10);
const currY = parseInt(Math.random()*7-3, 10);
const currDuration = parseInt((Math.random()*0.4+0.8)*duration, 10);
this.moveToAndCollect({
x: currX,
y: currY,
duration: currDuration,
});
}
}
fixPos() {
const actualX = this.pos[this.pos.length - 1][0] - this.pos[1][0];
const deviation = this.puzzleX - actualX;
if (Math.abs(deviation) > 4) {
this.moveToAndCollect({
x: deviation,
y: parseInt(Math.random()*8-3, 10),
duration: 250,
});
}
}
moveToAndCollect({ x, y, duration }) {
let movedX = 0;
let movedY = 0;
let movedT = 0;
const times = duration / this.minDuration;
let perX = x / times;
let perY = y / times;
let padDuration = 0;
if (Math.abs(perX) < 1) {
padDuration = duration / Math.abs(x) - this.minDuration;
perX = 1;
perY = y / Math.abs(x);
}
while (Math.abs(movedX) < Math.abs(x)) {
const rDuration = parseInt(padDuration + Math.random()*16-4, 10);
movedX += perX + Math.random()*2-1;
movedY += perY;
movedT += this.minDuration + rDuration;
const currX = parseInt(this.x + movedX, 10);
const currY = parseInt(this.y + movedY, 10);
const currT = this.t + movedT;
this.pos.push([currX, currY, currT]);
}
this.x += x;
this.y += y;
this.t += Math.max(duration, movedT);
}
}
async function getResult(){
let aaa = new JDJRValidator();
await aaa.run();
return `&validate=${aaa.c['validate']}`;
}
PuzzleRecognizer.getResult = getResult;
module.exports = PuzzleRecognizer;
// new JDJRValidator().report(1000);
//console.log(getCoordinate(new MousePosFaker(100).run())+'1111');