// ==UserScript==

// @name SWVerifyCode

// @namespace http://tampermonkey.net/

// @version 1.1

// @description try to take over the world!

// @author Czy

// @match http://jwgl.sdust.edu.cn/jsxsd/

// @match http://jwgl.sdust.edu.cn/

// @grant none

// @github https://github.com/WindrunnerMax/SWVerifyCode

// @date 2020/02/18

// ==/UserScript==

/**

* 配置账号密码信息(选填)

*/

var username = ""; //账号

var password = "" ; //密码

var autologin = false; //自动登录

var height = 22;

var width = 62;

var rgbThres = 150;

var charMap = {

'1' : "111100111110000111110000111111100111111100111111100111111100111111100111111100111111100111110000001110000001",

'2' : "100000111000000011111111001111111001111111001111110011111000111110011111100111111001111111000000001000000001",

'3' : "100000111000000011111110001111111001111110011110000111110000011111110001111111001111110001100000011100000111",

'b' : "001111111001111111001111111001000011000000001000111000001111100001111100001111100000111000000000001001000011",

'c' : "111111111111111111111111111110000011100000011000111111001111111001111111001111111000111111100000011110000011",

'm' : "111111111111111111111111111001000011000000000000111000001111001001111001001111001001111001001111001001111001",

'n' : "111111111111111111111111111001100001001000000000011100000111100001111100001111100001111100001111100001111100",

'v' : "111111111111111111111111111111111011001110011001110011001110011100100111100100111100100111110001111110001111",

'x' : "111111111111111111111111111001110011001110011100100111110001111110001111110001111100100111001110011001110011",

'z' : "111111111111111111111111111000000011000000011111100111111001111110011111100111111001111111000000011000000011"

};

function binaryImage(ctx){

let imageData = ctx.getImageData(0, 0, width, height).data;

var imgArr = [];

for(let x=0; x<width ; ++x){

for(let y=0;y<height;++y){

if(!imgArr[y]) imgArr[y] = [];

if(x === 0 || y === 0 || x === width-1 || y === height - 1){

imgArr[y][x] = 1;

continue;

}

var i = (y*width + x)*4;

if(imageData[i] < rgbThres && imageData[i + 1] < rgbThres && imageData[i + 2] < rgbThres){

imgArr[y][x] = 0;

}else{

imgArr[y][x] = 1;

}

}

}

return imgArr;

}

function removeByLine(imgArr){

var xCount = imgArr[0].length;

var yCount = imgArr.length;

for(let i = 1;i<yCount-1;++i){

for(let k = 1;k<xCount-1;++k){

if(imgArr[i][k] === 0){

let countOne = imgArr[i][k-1] + imgArr[i][k+1] + imgArr[i-1][k]+imgArr[i+1][k];

if(countOne > 2) imgArr[i][k] = 1;

}

}

}

return imgArr;

}

function cutImg(imgArr,arrX,arrY,n){

var imgArrArr = [];

for(let i=0;i<n;++i){

var unitImg = [];

for(let j = arrY[i][0];j<arrY[i][1];++j){

if(!unitImg[j]) unitImg[j-arrY[i][0]] = [];

for(let k = arrX[i][0];k<arrX[i][1];++k){

unitImg[j-arrY[i][0]][k-arrX[i][0]] = imgArr[j][k];

}

}

imgArrArr.push(unitImg);

}

return imgArrArr;

}

function getString(imgArr){

var s = "";

imgArr.forEach((vx) => {

vx.forEach((vy) => {

s += vy;

})

})

return s;

}

function comparedText(s1,s2){

var percent = 0;

var n = s1.length;

for(let i = 0;i<n;++i) s1[i] === s2[i] ? ++percent : "";

return percent;

}

function matchCode(imgArrArr){

var record = "";

imgArrArr.forEach((imgArr) => {

let maxMatch = 0;

let tempRecord = "";

for(let char in charMap){

let percent = comparedText(getString(imgArr),charMap[char]);

if(percent > maxMatch){

maxMatch = percent;

tempRecord = char;

}

}

record += tempRecord;

})

return record;

}

function showImg(imgArr){

var s = "";

imgArr.forEach((vx) => {

vx.forEach((vy) => {

s += vy;

})

s += "\n";

})

console.log(s);

}

function main(){

var img = document.getElementById("SafeCodeImg");

const canvas = document.createElement("canvas");

canvas.width = width;

canvas.height = height;

const ctx = canvas.getContext("2d");

ctx.drawImage(img, 0, 0);

var imgArr = binaryImage(ctx);

imgArr = removeByLine(imgArr);

var imgArrArr = cutImg(imgArr,[[4, 13], [14, 23], [24, 33], [34, 43]],[[4, 16], [4, 16], [4, 16], [4, 16]],4);

showImg(imgArr);

var result = matchCode(imgArrArr);

console.log("识别为：",result);

document.getElementById("RANDOMCODE").value = result;

document.getElementById("userAccount").value = username;

document.getElementById("userPassword").value = password;

if (autologin) document.getElementById("btnSubmit").click();

}

(function() {

'use strict';

var img = document.getElementById("SafeCodeImg");

img.onload = function(){main()};

img.src = img.src;

})();