// ==UserScript==
// @name BookliveDownloader
// @namespace https://booklive.jp/
// @version 0.1
// @description Manga downloader for booklive.jp
// @homepage https://github.com/Timesient/manga-download-scripts
// @author Timesient
// @license GPL-3.0
// @match https://booklive.jp/bviewer/*
// @require https://unpkg.com/[email protected]/dist/axios.min.js
// @require https://unpkg.com/[email protected]/dist/jszip.min.js
// @require https://unpkg.com/[email protected]/dist/FileSaver.min.js
// @require https://greasyfork.org/scripts/451810-imagedownloaderlib/code/ImageDownloaderLib.js?version=1096733
// @grant GM_xmlhttpRequest
// ==/UserScript==
(async function(axios, JSZip, saveAs) {
'use strict';
// get ID of comic from URL
const comicID = new URL(window.location.href).searchParams.get('cid');
// collect config data
const randomString = generateRandomString32(comicID);
const contentInfoResponse = await axios.get(`https://booklive.jp/bib-api/bibGetCntntInfo?cid=${comicID}&dmytime=${Date.now()}&k=${randomString}`);
const config = {
id: comicID,
title: contentInfoResponse.data.items[0].Title,
contentServer: contentInfoResponse.data.items[0].ContentsServer,
ctbl: contentInfoResponse.data.items[0].ctbl,
ptbl: contentInfoResponse.data.items[0].ptbl,
p: contentInfoResponse.data.items[0].p
}
// decrypt ctbl and ptbl in config
config.ctbl = getDecryptedTable(config.id, randomString, config.ctbl);
config.ptbl = getDecryptedTable(config.id, randomString, config.ptbl);
// check if trial
const isTrial = config.contentServer.includes('trial');
// collect encrypted data of files
const getContentResponse = await axios.get(
isTrial ?
`${config.contentServer}/content.js` :
`${config.contentServer}/sbcGetCntnt.php?cid=${comicID}&p=${config.p}`
);
// generate data of image files
const files = (() => {
const files = Array.from(
isTrial ?
getContentResponse.data.matchAll(/(pages\\\/[a-zA-Z0-9_]*.jpg)[^A-Z]*orgwidth=\\\"(\d*)\\\" orgheight=\\\"(\d*)\\\"/gm) :
getContentResponse.data.ttx.matchAll(/(pages\/[a-zA-Z0-9_]*.jpg)[^A-Z]*orgwidth="(\d*)" orgheight="(\d*)"/gm)
).map(page => ({
filename: isTrial ?
page[1].replace('\\', '') :
page[1],
width: parseInt(page[2]),
height: parseInt(page[3]),
src: isTrial ?
`${config.contentServer}/${page[1].replace('\\', '')}/M_H.jpg` :
`${config.contentServer}/sbcGetImg.php?cid=${config.id}&src=${encodeURIComponent(page[1])}&p=${config.p}`
}));
return files.slice(0, files.length / 2);
})();
// setup control panel
setupControlPanel(files.length);
// setup ImageDownloader
ImageDownloader({
getImagePromises,
isOKToDownload,
title: config.title,
zipOptions: { base64: true },
cssVerticalDistance: 'top: 120px',
});
// collect promises of image
function getImagePromises() {
const startNum = parseInt(document.getElementById('start-input').value);
const endNum = parseInt(document.getElementById('end-input').value);
return files.slice(startNum - 1, endNum).map(file => getDecryptedImage(file));
}
// setup control panel for page number input
function setupControlPanel(maxNum) {
const panelElement = document.createElement('div');
const inputStyle = `
width: 40%;
height: 26px;
border: 1px solid #aaa;
border-radius: 4px;
font-family: 'Consolas', 'Monaco', 'Microsoft YaHei';
text-align: center;
`;
panelElement.innerHTML = `
<input id="start-input" style="${inputStyle}" type="text" placeholder="1" />
<span style="margin: 0 4px; transform: translateY(-0.5px);">to</span>
<input id="end-input" style="${inputStyle}" type="text" placeholder="${maxNum}" />
`;
panelElement.style = `
position: fixed;
top: 72px;
left: 72px;
z-index: 888;
box-sizing: border-box;
width: 144px;
height: 104px;
padding: 8px;
display: flex;
justify-content: center;
align-items: baseline;
font-size: 14px;
font-family: 'Consolas', 'Monaco', 'Microsoft YaHei';
background-color: #f1f1f1;
border: 1px solid #aaa;
border-radius: 4px;
`;
document.body.appendChild(panelElement);
}
// check validity of page nums from input
function isOKToDownload() {
const maxNum = files.length;
const startNum = parseInt(document.getElementById('start-input').value);
const endNum = parseInt(document.getElementById('end-input').value);
if (isNaN(startNum) || isNaN(endNum)) { alert("请正确输入数值\nPlease enter page number correctly."); return false; }
if (startNum < 1 || endNum < 1) { alert("页码的值不能小于1\nPage number should not smaller than 1."); return false; }
if (startNum > maxNum || endNum > maxNum) { alert(`页码的值不能大于${maxNum}\nPage number should not bigger than ${maxNum}.`); return false; }
if (startNum > endNum) { alert("起始页码的值不能大于终止页码的值\nNumber of start should not bigger than number of end."); return false; }
return true;
}
// get decrypted image
function getDecryptedImage(file) {
return new Promise(async resolve => {
const encryptedImageBuffer = await axios.get(file.src, { responseType: 'arraybuffer' }).then(res => res.data);
const encryptedImageBase64 = 'data:image/jpg;base64,' + window.btoa(new Uint8Array(encryptedImageBuffer).reduce((data, byte) => data + String.fromCharCode(byte), ''));
const encryptedImage = document.createElement('img');
encryptedImage.onload = function () {
// draw the encrypted image on temp canvas
const tempCanvas = document.createElement('canvas');
const tempCtx = tempCanvas.getContext('2d');
tempCanvas.width = encryptedImage.width;
tempCanvas.height = encryptedImage.height;
tempCtx.drawImage(encryptedImage, 0, 0);
// get coords
const key = getDecryptionKey(file.filename);
const decoder = new CoordDecoder(key[0], key[1]);
const coords = decoder.getCoords({
width: encryptedImage.width,
height: encryptedImage.height
});
// create dest canvas
const destCanvas = document.createElement('canvas');
let destCtx = destCanvas.getContext('2d');
destCanvas.width = file.width;
destCanvas.height = file.height;
// place pieces on correct position
for (const coord of coords) {
const piece = tempCtx.getImageData(coord.xsrc, coord.ysrc, coord.width, coord.height);
destCtx.putImageData(piece, coord.xdest, coord.ydest);
}
// if trial, clear those transparent pixel
if (isTrial) {
let originWidth;
for (let w = destCanvas.width; w >= 0; w--) {
const px = destCanvas.getContext('2d').getImageData(w, 0, 1, 1);
if (!Array.from(px.data).every(data => data === 0)) {
originWidth = w;
break;
}
}
let originHeight;
for (let h = destCanvas.height; h >= 0; h--) {
const px = destCanvas.getContext('2d').getImageData(0, h, 1, 1);
if (!Array.from(px.data).every(data => data === 0)) {
originHeight = h;
break;
}
}
destCanvas.width = originWidth;
destCanvas.height = originHeight;
destCtx = destCanvas.getContext('2d');
for (const coord of coords) {
const piece = tempCtx.getImageData(coord.xsrc, coord.ysrc, coord.width, coord.height);
destCtx.putImageData(piece, coord.xdest, coord.ydest);
}
}
resolve(destCanvas.toDataURL().replace('data:image/png;base64,', ''));
}
encryptedImage.src = encryptedImageBase64;
});
}
// scrambled code extracted from speedbinb.js
function generateRandomString32(id) {
function generateRandomString16() {
let e = "";
let n = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_";
for (let i = 0; i < 16; i++) {
e += n.charAt(Math.floor(Math.random() * n.length));
}
return e;
}
let n = generateRandomString16(),
i = Array(Math.ceil(16 / id.length) + 1).join(id),
r = i.substr(0, 16),
e = i.substr(-16, 16),
s = 0,
h = 0,
u = 0;
return n.split("").map(function (t, i) {
return s ^= n.charCodeAt(i),
h ^= r.charCodeAt(i),
u ^= e.charCodeAt(i),
t + "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_" [s + h + u & 63]
}).join("");
}
// scrambled code extracted from speedbinb.js
function getDecryptedTable(t, i, n) { // id, randomString, table
for (var r = t + ":" + i, e = 0, s = 0; s < r.length; s++)
e += r.charCodeAt(s) << s % 16;
0 == (e &= 2147483647) && (e = 305419896);
var h = "",
u = e;
for (let s = 0; s < n.length; s++) {
u = u >>> 1 ^ 1210056708 & -(1 & u);
var o = (n.charCodeAt(s) - 32 + u) % 94 + 32;
h += String.fromCharCode(o)
}
try {
return JSON.parse(h)
} catch (t) {}
return null
}
// scrambled code extracted from speedbinb.js
function getDecryptionKey(t) { // filename
var i = [0, 0];
if (t) {
for (var n = t.lastIndexOf("/") + 1, r = t.length - n, e = 0; e < r; e++)
i[e % 2] += t.charCodeAt(e + n);
i[0] %= 8,
i[1] %= 8
}
var s = config.ptbl[i[0]],
h = config.ctbl[i[1]];
return [h, s];
}
// scrambled code extracted from speedbinb.js
class CoordDecoder {
constructor(t, i) {
this.It = null;
this.kt = [-1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, 62, -1, -1, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, -1, -1, -1, -1, -1, -1, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, -1, -1, -1, -1, 63, -1, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, -1, -1, -1, -1, -1];
var n = t.match(/^=([0-9]+)-([0-9]+)([-+])([0-9]+)-([-_0-9A-Za-z]+)$/),
r = i.match(/^=([0-9]+)-([0-9]+)([-+])([0-9]+)-([-_0-9A-Za-z]+)$/);
if (null !== n && null !== r && n[1] === r[1] && n[2] === r[2] && n[4] === r[4] && "+" === n[3] && "-" === r[3] && (this.T = parseInt(n[1], 10),
this.j = parseInt(n[2], 10),
this.xt = parseInt(n[4], 10),
!(8 < this.T || 8 < this.j || 64 < this.T * this.j))) {
var e = this.T + this.j + this.T * this.j;
if (n[5].length === e && r[5].length === e) {
var s = this.St(n[5]),
h = this.St(r[5]);
this.Ct = s.n,
this.At = s.t,
this.Tt = h.n,
this.Pt = h.t,
this.It = [];
for (var u = 0; u < this.T * this.j; u++)
this.It.push(s.p[h.p[u]])
}
}
}
St(t) {
var i, n = [],
r = [],
e = [];
for (i = 0; i < this.T; i++)
n.push(this.kt[t.charCodeAt(i)]);
for (i = 0; i < this.j; i++)
r.push(this.kt[t.charCodeAt(this.T + i)]);
for (i = 0; i < this.T * this.j; i++)
e.push(this.kt[t.charCodeAt(this.T + this.j + i)]);
return {
t: n,
n: r,
p: e
}
}
getCoords(t) {
for (var i = t.width - 2 * this.T * this.xt, n = t.height - 2 * this.j * this.xt, r = Math.floor((i + this.T - 1) / this.T), e = i - (this.T - 1) * r, s = Math.floor((n + this.j - 1) / this.j), h = n - (this.j - 1) * s, u = [], o = 0; o < this.T * this.j; ++o) {
var a = o % this.T,
f = Math.floor(o / this.T),
c = this.xt + a * (r + 2 * this.xt) + (this.Tt[f] < a ? e - r : 0),
l = this.xt + f * (s + 2 * this.xt) + (this.Pt[a] < f ? h - s : 0),
v = this.It[o] % this.T,
d = Math.floor(this.It[o] / this.T),
b = v * r + (this.Ct[d] < v ? e - r : 0),
g = d * s + (this.At[v] < d ? h - s : 0),
p = this.Tt[f] === a ? e : r,
m = this.Pt[a] === f ? h : s;
0 < i && 0 < n && u.push({
xsrc: c,
ysrc: l,
width: p,
height: m,
xdest: b,
ydest: g
})
}
return u
}
}
})(axios, JSZip, saveAs);
