A login, view, download tool for exhentai
// ==UserScript==
// @name Let's panda!
// @namespace https://github.com/Sean2525/Let-s-panda
// @author sean2525, strong-Ting
// @description A login, view, download tool for exhentai
// @license MIT
// @require https://code.jquery.com/jquery-3.2.1.slim.min.js
// @include https://exhentai.org/
// @include https://exhentai.org/g/*
// @include https://e-hentai.org/g/*
// @require https://cdnjs.cloudflare.com/ajax/libs/jszip/3.1.4/jszip.min.js
// @require https://cdnjs.cloudflare.com/ajax/libs/FileSaver.js/1.3.3/FileSaver.min.js
// @grant GM_xmlhttpRequest
// @grant GM_setValue
// @grant GM_getValue
// @connect *
// @run-at document-end
// @version 0.1.1
// ==/UserScript==
jQuery(function($) {
/**
* Output extension
* @type {String} zip
* cbz
*
* Tips: Convert .zip to .cbz
* Windows
* $ ren *.zip *.cbz
* Linux
* $ rename 's/\.zip$/\.cbz/' *.zip
*/
var outputExt = 'cbz'; // or 'zip'
/**
* Multithreading
* @type {Number} [1 -> 32]
*/
var threading = 8;
/**
* Logging
* @type {Boolean}
*/
var debug = false;
const loginPage = () => {
let div = document.createElement('div');
div.className = "main";
let username = document.createElement('input');
let style = document.createElement('style');
style.innerHTML = `
.main {
display: -webkit-flex;
display: flex;
-webkit-flex-direction: column;
flex-direction: column;
-webkit-align-items: center;
align-items: center;
-webkit-justify-content: center;
justify-content: center;
height: ${window.innerHeight}px;
}
form {
display: -webkit-flex;
display: flex;
-webkit-flex-direction: column;
flex-direction: column;
-webkit-align-items: center;
align-items: center;
-webkit-justify-content: center;
justify-content: center;
}
.image {
position: relative;
margin: 0;
}
.input {
margin-top: 10px;
display: block;
height: 34px;
padding: 6px 12px;
font-size: 14px;
line-height: 1.42857143;
color: #555;
background-color: #fff;
background-image: none;
border: 1px solid #ccc;
border-radius: 4px;
-webkit-box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
box-shadow: inset 0 1px 1px rgba(0,0,0,.075);
-webkit-transition: border-color ease-in-out .15s,-webkit-box-shadow ease-in-out .15s;
-o-transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
transition: border-color ease-in-out .15s,box-shadow ease-in-out .15s;
}
.btn {
color: #fff;
background-color: #5cb85c;
border-color: #4cae4c;
margin-top: 10px;
display: inline-block;
font-weight: 400;
line-height: 1.25;
text-align: center;
white-space: nowrap;
vertical-align: middle;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
border: 1px solid transparent;
padding: .5rem 1rem;
font-size: 1rem;
border-radius: .25rem;
-webkit-transition: all .2s ease-in-out;
-o-transition: all .2s ease-in-out;
transition: all .2s ease-in-out;
}
`;
$('head').append(style);
const setCookie = (headers) => {
headers.split('\r\n').find(x => x.match('cookie')).replace('set-cookie: ', "").split('\n').map( x => document.cookie = x.replace('.e-hentai.org', '.exhentai.org'));
document.cookie = "yay=; expires=Thu, 01 Jan 1970 00:00:00 UTC; domain=.exhentai.org; path=/;";
window.location.reload();
};
const clearCookie = () => {
document.cookie = "yay=; expires=Thu, 01 Jan 1970 00:00:00 UTC; domain=.exhentai.org; path=/;";
window.location.reload();
};
let form = document.createElement('form');
let login = document.createElement('button');
let password = document.createElement('input');
let error = document.createElement('p');
error.innerHTML = `
if you can not login , go to <a target="_blank" href="https://forums.e-hentai.org/index.php?act=Login&CODE=00" style="color:red">here</a> login <br >
make sure login success, then click <button class="clearCookie">here</button>
`;
error.style.color = "white";
error.hidden = true;
$('img')[0].className = "image";
username.type = "text";
username.className = "input";
password.type = "password";
password.className = "input";
login.addEventListener('click', () => {
GM_xmlhttpRequest({
method: "POST",
url: "https://forums.e-hentai.org/index.php?act=Login&CODE=01",
data: `referer=https://forums.e-hentai.org/index.php?&b=&bt=&UserName=${username.value}&PassWord=${password.value}&CookieDate=1"}`,
headers: {
"Content-Type": "application/x-www-form-urlencoded"
},
onload: function(response) {
if(debug) console.log(response);
if(/You are now logged/.exec(response.responseText)){
setCookie(response.responseHeaders);
} else {
error.hidden = false;
}
}
});
});
login.className = "btn";
login.innerHTML = "Login";
form.append(username);
form.append(password);
form.append(login);
form.addEventListener('submit', e => {
e.preventDefault();
});
div.append($('img')[0]);
div.append(form);
div.append(error);
$('body').append(div);
$('.clearCookie').on('click', clearCookie);
};
const downloadPage = () => {
var zip = new JSZip(),
doc = document,
tit = doc.title,
$win = $(window),
loc = /.*\//.exec(doc.location.href)[0],
prevZip = false,
current = 0,
images = [],
total = 0,
final = 0,
hrefs = [],
comicId = location.pathname.match(/\d+/)[0],
download = document.createElement('p');
const dlImg = ({index, url}, success, error) => {
var filename = url.replace(/.*\//g, '');
var extension = filename.split('.').pop();
filename = ('0000' + index).slice(-4) + '.' + extension;
if (debug) console.log(filename, 'progress');
GM_xmlhttpRequest({
method: 'GET',
url: url,
responseType: 'arraybuffer',
onload: function (response) {
final++;
success(response, filename);
},
onerror: function (err) {
final++;
error(err, filename);
}
});
};
const next = () => {
download.innerHTML = `<img src="https://exhentai.org/img/mr.gif"> <a href="#"> Downloading ${final}/${total}</a>`;
if (debug) console.log(final, current);
if (final < current) return;
(final < total) ? addZip() : genZip();
};
const end = () => {
$win.off('beforeunload');
if (debug) console.timeEnd('eHentai');
}
const genZip = () => {
zip.generateAsync({
type: 'blob'
}).then(function (blob) {
var zipName = tit
.replace(/\s/g, '_') + '.' + comicId + '.' + outputExt;
if (prevZip) window.URL.revokeObjectURL(prevZip);
prevZip = blob;
saveAs(blob, zipName);
if (debug) console.log('COMPLETE');
download.innerHTML = `<img src="https://exhentai.org/img/mr.gif"> <a href="${window.URL.createObjectURL(prevZip)}" download="${zipName}"> Download completed!</a>`;
end();
});
};
const addZip = () => {
total = images.length;
var max = current + threading;
if(max > total) max = total;
for(current; current < max ; current++){
dlImg(images[current], function (response, filename) {
zip.file(filename, response.response);
if (debug) console.log(filename, 'success');
next();
}, function (err, filename) {
zip.file(filename + '_' + comicId + '_error.gif', 'R0lGODdhBQAFAIACAAAAAP/eACwAAAAABQAFAAACCIwPkWerClIBADs=', {
base64: true
});
if (debug) console.log(filename, 'error');
next();
});
}
};
const getImageNext = () => {
download.innerHTML = `<img src="https://exhentai.org/img/mr.gif"> <a href="#">Getting images ${final}/${hrefs.length}</a>`;
if (debug) console.log(final, current);
if (final < current) return;
(final < hrefs.length) ? getImage() :(() => {
current = 0;
final = 0;
addZip();
})();
};
const getImage = () => {
let max = current + threading;
if(max > hrefs.length) max = hrefs.length;
for(current; current < max ; current++){
if(debug) console.log(hrefs[current]);
GM_xmlhttpRequest({
method: "GET",
url: hrefs[current],
onload: function(response) {
let imgNo = parseInt(response.responseText.match("startpage=(\\d+)").pop());
let img = (new DOMParser()).parseFromString(response.responseText, "text/html").querySelector("#img");
if (debug) console.log(imgNo, 'success');
images.push({ index: imgNo ,url:img.src});
final++;
getImageNext();
},
onerror: function(err) {
final++;
getImageNext();
if(debug) console.log(err);
}
});
}
};
const getHref = () => {
let page = document.querySelector('table[class=ptt] tbody tr').childNodes.length-2;
for(let i = 0 ; i < page; i++){
GM_xmlhttpRequest({
method: "GET",
url: `${loc}?p=${i}`,
onload: function(response) {
let imgs = [...(new DOMParser()).parseFromString(response.responseText, "text/html").querySelectorAll(".gdtm a")];
imgs.forEach((v) => {
hrefs.push(v.href);
});
if(i == page -1){
getImage();
}
},
onerror: function(err) {
download.innerHTML = '<img src="https://exhentai.org/img/mr.gif"> <a href="#">Get href failed</a>';
if(i == page -1){
getImage();
}
if(debug) console.log(err);
}
});
}
};
download.className = "g3 gsp";
download.innerHTML = `<img src="https://exhentai.org/img/mr.gif"> <a class="panda_download" href="#">Download</a>`;
$('#gd5').append(download);
$('.panda_download').on('click', () => {
if(threading < 1) threading = 1;
if(threading > 32) threading = 32;
if (debug) console.time('eHentai');
$win.on('beforeunload', function () {
return 'Progress is running...';
});
download.innerHTML = `<img src="https://exhentai.org/img/mr.gif"> <a href="#">Start Download</a>`;
getHref();
});
};
function view()
{
var lpPage = (document.querySelectorAll("table.ptt td").length - 2);
var data = document.querySelector("body div.gtb p.gpc").textContent.split(" ");
var minPic = parseInt(data[1]);
var maxPic = parseInt(data[3]);
var imgNum = parseInt(gdd.querySelector("#gdd tr:nth-child(n+6) td.gdt2").textContent.split(" ")[0]);
var pagePic = maxPic - minPic +1;
var status = "false";
viewer(document.querySelectorAll("table.ptt td").length - 2,imgNum ,minPic,maxPic);
function viewer(lpPage, imgNum,minPic,maxPic) {
var Gallery = function(pageNum, imgNum,minPic,maxPic) {
this.pageNum = pageNum || 0;
this.imgNum = imgNum || 0;
};
Gallery.prototype = {
imgList: [],
checkFunctional: function() {
return (this.imgNum > 41 && this.pageNum < 2) || this.imgNum !== 0;
},
loadPageUrls: function(element) {
[].forEach.call(element.querySelectorAll("a[href]"), function(item) {
console.log('load work');
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function() {
if (4 == ajax.readyState && 200 == ajax.status) {
var imgNo = parseInt(ajax.responseText.match("startpage=(\\d+)").pop());
var src = (new DOMParser()).parseFromString(ajax.responseText, "text/html").getElementById("img").src;
Gallery.prototype.imgList[imgNo-1].src = src;
var store_width = GM_getValue("width");
var width = null;
var page_width = document.getElementById("gdt").offsetWidth;
if(GM_getValue == undefined)
{
width = 0.8;
}
else
{
width = store_width;
}
var pic_num = (imgNo-1) % (maxPic-minPic+1);
document.getElementById("gdt").children[pic_num].setAttribute('width',width*page_width);
}
};
ajax.open("GET", item.href);
ajax.send(null);
});
},
/*
download_file: function(element,dir) {
[].forEach.call(element.querySelectorAll("a[href]"), function(item) {
console.log('load work');
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function() {
if (4 == ajax.readyState && 200 == ajax.status) {
var imgNo = parseInt(ajax.responseText.match("startpage=(\\d+)").pop());
var src = (new DOMParser()).parseFromString(ajax.responseText, "text/html").getElementById("img").src;
var download_url = src;
var download_filename = dir+"/" + (imgNo).toString();
chrome.runtime.sendMessage({url:download_url ,filename:download_filename}, function(response) {
console.log(response);
});
}
};
ajax.open("GET", item.href);
ajax.send(null);
});
},*/
getNextPage: function(action) {
var LoadPageUrls = this.loadPageUrls;
var download = this.download_file;
var dir_name = document.getElementById('gj').innerHTML;
if (dir_name == "")
{
dir_name = document.getElementById('gn').innerHTML;
}
dir_name = dir_name.replace("/"," ");
dir_name = dir_name.replace("?"," ");
dir_name = dir_name.replace("*"," ");
dir_name = dir_name.replace("<"," ");
dir_name = dir_name.replace('"'," ");
dir_name = dir_name.replace(":"," ");
dir_name = dir_name.replace(">"," ");
dir_name = dir_name.replace("|"," ");
for (var i = 0; i < this.pageNum; ++i) {
var ajax = new XMLHttpRequest();
ajax.onreadystatechange = function() {
if (4 == this.readyState && 200 == this.status) {
var dom = (new DOMParser()).parseFromString(this.responseText, "text/html");
if (action == 'download')
{
download(dom.getElementById("gdt"),dir_name);
}
else
{
LoadPageUrls(dom.getElementById("gdt"));
}
}
};
ajax.open("GET", location.href + "?p=" + i);
ajax.send(null);
}
},
download: function() {
this.getNextPage("download");
},
claenGDT: function() {
while (gdt.firstChild && gdt.firstChild.className)
gdt.removeChild(gdt.firstChild);
},
generateImg: function(callback) {
for (var i = 0; i < this.imgNum; i++) {
if(i<maxPic && i >= minPic - 1 )
{
var img = document.createElement('img');
img.setAttribute("src", "http://ehgt.org/g/roller.gif");
this.imgList.push(img);
gdt.appendChild(img);
}
else
{
var img = document.createElement("img");
this.imgList.push(img);
// gdt.appendChild(img); //cant load all
}
}
document.getElementById("gdt").style.textAlign="center";
document.getElementById("gdt").style.maxWidth="100%";
document.getElementById('gdo4').innerHTML= ""; //clear origin button(Normal Large)
var style = document.createElement('style');
style.type = 'text/css';
style.innerHTML = '.buttonCss{font-weight:bold;padding:3px 2px;margin:0 2px 4px 2px;white-space:nowrap;width: 55px;float:left;border-radius:5px;text-align:center;font-size:10pt;border:1px solid #706563;cursor:pointer}';
document.getElementsByTagName('head')[0].appendChild(style);
var single_pic = document.createElement("div");//create single button
single_pic.className = "buttonCss";
single_pic.innerHTML += 'single';
gdo4.appendChild(single_pic);
var double_pic = document.createElement("div"); //create double button
double_pic.className = "buttonCss";
double_pic.innerHTML = 'double';
gdo4.appendChild(double_pic);
/* var downloads = document.createElement("div");
downloads.className = "buttonCss";
downloads.innerHTML = "downloads";
gdo4.appendChild(downloads);*/
document.getElementById('gdo4').children[0] //when single button click change value of width
.addEventListener('click', function (event) {
// chrome.storage.sync.set({"width":0.8});
GM_setValue("width", "0.8");
var page_width = document.getElementById("gdt").offsetWidth;
pic_width(GM_getValue("width")*page_width);
});
document.getElementById('gdo4').children[1] //when double button click change value of width
.addEventListener('click', function (event) {
// chrome.storage.sync.set({"width":0.48});
GM_setValue("width", "0.48");
var page_width = document.getElementById("gdt").offsetWidth;
pic_width(GM_getValue("width")*page_width);
});
/*
document.getElementById('gdo4').children[2]
.addEventListener('click',function(event){
download_files(lpPage,imgNum,minPic,maxPic);
});*/
/*
chrome.storage.onChanged.addListener(function(changes,area){ //when value of width is changed,change width of pics
var page_width = document.getElementById("gdt").offsetWidth;
pic_width(changes.width.newValue*page_width);
})
*/
function pic_width(width)//change width of pics
{
for(var i = (maxPic-minPic+1);i>0;i--)
{
document.getElementById('gdt').children[i-1].setAttribute('width',width);
}
}
callback && callback();
}
};
var g = new Gallery(lpPage,imgNum,minPic,maxPic);
if (g.checkFunctional()) {
g.generateImg(function() {
g.loadPageUrls(gdt);
g.claenGDT();
// if (g.pageNum)
// g.getNextPage('load');
});
}
else {
alert("There are some issue in the script\nplease open an issue on Github");
window.open("https://github.com/strong-Ting/Gentle-Viewer/issues");
}
function download_files(lpPage ,imgNum,minPic,maxPic)
{
console.log(lpPage,imgNum,minPic,maxPic);
var download_obj = new Gallery(lpPage,imgNum,minPic,maxPic);
download_obj.download();
}
}
}
if((e = $('img')).length === 1 && e[0].src === window.location.href){
loginPage();
} else if (window.location.href.match(/^https:\/\/e[x-]hentai\.org\/g/)){
downloadPage();
view();
}
});