自动填充东北大学教务处验证码
// ==UserScript==
// @namespace https://github.com/eleflea
// @name NEU AAO Captcha filler
// @name:en NEU AAO Captcha filler
// @name:zh 东北大学教务处验证码填充
// @name:zh-CN 东北大学教务处验证码填充
// @description 自动填充东北大学教务处验证码
// @description:en Automatically fill the Northeastern University's aao website captcha
// @description:zh 自动填充东北大学教务处验证码
// @description:zh-CN 自动填充东北大学教务处验证码
// @include *://aao.qianhao.aiursoft.com/*
// @include *://202.118.31.197/*
// @include *://aao.neu.edu.cn/*
// @include *://zhjw.neu.edu.cn/*
// @supportURL https://github.com/eleflea/neu_filler/
// @version 0.2.3
// @author eleflea
// @grant none
// ==/UserScript==
"use strict";
function _toConsumableArray(arr) { if (Array.isArray(arr)) { for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) { arr2[i] = arr[i]; } return arr2; } else { return Array.from(arr); } }
var aaoCaptcha = function aaoCaptcha(imgElement) {
var token = {
"*": "101111100011111010111",
"+": "111101111000011111011",
"1": "1011110000000011111111111111",
"2": "1011100011101000101101111111",
"3": "1011101011011010010001111111",
"4": "1111011101101100000001111111",
"5": "0000110010111001001101111111",
"6": "1110001101011011100101111111",
"7": "0111111011110001001110111111"
};
var box = [[7, 2, 17, 16], [19, 2, 27, 16], [33, 2, 43, 16]];
function digit(box, threshold) {
var min = 30;
var num = 0;
for (var i = 1; i < 8; i++) {
var score = grayImg.compare.apply(grayImg, _toConsumableArray(box).concat([token[i.toString()]]));
if (score < threshold) {
return i;
}
if (score < min) {
min = score;
num = i;
}
}
return num;
}
function operator(box, threshold) {
var scorePlus = grayImg.compare.apply(grayImg, _toConsumableArray(box).concat([token["+"]]));
var scoreMul = grayImg.compare.apply(grayImg, _toConsumableArray(box).concat([token["*"]]));
if (scoreMul > scorePlus) {
return 0;
}
return 1;
}
function identify(threshold) {
var num1 = digit(box[0], threshold);
var num2 = digit(box[2], threshold);
var op = operator(box[1], threshold);
return op ? num1 * num2 : num1 + num2;
}
function removeNoise() {
for (var y = 1; y < height - 1; y++) {
for (var x = 1; x < height - 1; x++) {
if (!grayImg.at(x, y) && grayImg.at(x - 1, y) && grayImg.at(x, y - 1) && grayImg.at(x + 1, y) && grayImg.at(x, y + 1)) {
grayImg.set(x, y, 1);
}
}
}
}
// get imgData
var canvasElement = document.createElement('canvas');
var height = imgElement.height;
var width = imgElement.width;
canvasElement.height = height;
canvasElement.width = width;
var ctx = canvasElement.getContext('2d');
ctx.drawImage(imgElement, 0, 0);
var imgData = ctx.getImageData(0, 0, imgElement.width, imgElement.height).data;
// check imgData, alpha must be 255
if (imgData[3] == 0) {
return;
}
// convert to gray level with 140 threshold
var grayImgData = [];
for (var i = 0; i < 4 * height * width; i += 4) {
var lum = 0.299 * imgData[i] + 0.587 * imgData[i + 1] + 0.114 * imgData[i + 2];
grayImgData.push(lum > 140 ? 1 : 0);
}
// grayImg obj
var grayImg = {
width: width,
height: height,
grayImgData: grayImgData,
at: function at(x, y) {
return this.grayImgData[x + this.width * y];
},
set: function set(x, y, color) {
this.grayImgData[x + this.width * y] = color;
},
compare: function compare(x1, y1, x2, y2, template) {
var score = 0;
var count = 0;
for (var x = x1; x < x2; x += 3) {
for (var y = y1; y < y2; y += 2) {
score += this.at(x, y) != template[count];
count++;
}
}
return score;
}
// remove noise and identify
};removeNoise();
var result = identify(2);
// set input element with the result
document.getElementsByName('Agnomen')[0].value = result.toString();
};
// test existence first
var imgElement = document.querySelector('img[width="55"][height="20"]');
if (imgElement !== null) {
// wait for captcha loaded
aaoCaptcha(imgElement);
imgElement.addEventListener("load", function () {
aaoCaptcha(imgElement);
});
}