Decrypt m3u8 files from play.boomstream.com/player.html

source.js

// FileSaver.min.js
(function(a,b){if("function"==typeof define&&define.amd)define([],b);else if("undefined"!=typeof exports)b();else{b(),a.FileSaver={exports:{}}.exports}})(this,function(){"use strict";function b(a,b){return"undefined"==typeof b?b={autoBom:!1}:"object"!=typeof b&&(console.warn("Depricated: Expected third argument to be a object"),b={autoBom:!b}),b.autoBom&&/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;.*charset\s*=\s*utf-8/i.test(a.type)?new Blob(["\uFEFF",a],{type:a.type}):a}function c(b,c,d){var e=new XMLHttpRequest;e.open("GET",b),e.responseType="blob",e.onload=function(){a(e.response,c,d)},e.onerror=function(){console.error("could not download file")},e.send()}function d(a){var b=new XMLHttpRequest;return b.open("HEAD",a,!1),b.send(),200<=b.status&&299>=b.status}function e(a){try{a.dispatchEvent(new MouseEvent("click"))}catch(c){var b=document.createEvent("MouseEvents");b.initMouseEvent("click",!0,!0,window,0,0,0,80,20,!1,!1,!1,!1,0,null),a.dispatchEvent(b)}}var f="object"==typeof window&&window.window===window?window:"object"==typeof self&&self.self===self?self:"object"==typeof global&&global.global===global?global:void 0,a=f.saveAs||"object"!=typeof window||window!==f?function(){}:"download"in HTMLAnchorElement.prototype?function(b,g,h){var i=f.URL||f.webkitURL,j=document.createElement("a");g=g||b.name||"download",j.download=g,j.rel="noopener","string"==typeof b?(j.href=b,j.origin===location.origin?e(j):d(j.href)?c(b,g,h):e(j,j.target="_blank")):(j.href=i.createObjectURL(b),setTimeout(function(){i.revokeObjectURL(j.href)},4E4),setTimeout(function(){e(j)},0))}:"msSaveOrOpenBlob"in navigator?function(f,g,h){if(g=g||f.name||"download","string"!=typeof f)navigator.msSaveOrOpenBlob(b(f,h),g);else if(d(f))c(f,g,h);else{var i=document.createElement("a");i.href=f,i.target="_blank",setTimeout(function(){e(i)})}}:function(a,b,d,e){if(e=e||open("","_blank"),e&&(e.document.title=e.document.body.innerText="downloading..."),"string"==typeof a)return c(a,b,d);var g="application/octet-stream"===a.type,h=/constructor/i.test(f.HTMLElement)||f.safari,i=/CriOS\/[\d]+/.test(navigator.userAgent);if((i||g&&h)&&"object"==typeof FileReader){var j=new FileReader;j.onloadend=function(){var a=j.result;a=i?a:a.replace(/^data:[^;]*;/,"data:attachment/file;"),e?e.location.href=a:location=a,e=null},j.readAsDataURL(a)}else{var k=f.URL||f.webkitURL,l=k.createObjectURL(a);e?e.location=l:location.href=l,e=null,setTimeout(function(){k.revokeObjectURL(l)},4E4)}};f.saveAs=a.saveAs=a,"undefined"!=typeof module&&(module.exports=a)});

function buf2hex(buffer) {
    return Array.from(new Uint8Array(buffer)).map(x => ('00' + x.toString(16)).slice(-2)).join('');
}

function stringToArrayBuffer(str) {
    return new Uint8Array(Array.from(str).map(x => x.charCodeAt(0))).buffer;
}

function encrypt(input, key) {
    let c = [];
    while (key.length < input.length) {
        key += key;
    }

    for (let i = 0; i < input.length; i++) {
        let value1 = input.charCodeAt(i);
        let value2 = key.charCodeAt(i);
        let xorValue = value1 ^ value2;
        let xorValueAsHexString = xorValue.toString(16);

        if (xorValueAsHexString.length < 2) {
            xorValueAsHexString = '0' + xorValueAsHexString;
        }

        c.push(xorValueAsHexString);
    }

    return c.join('');
}

function decrypt(input, key) {
    let c = [];
    while (key.length < input.length) {
        key += key;
    }

    for (let i = 0; i < input.length; i += 2) {
        let hexValueString = input.substring(i, i + 2);
        let value1 = parseInt(hexValueString, 16);
        let value2 = key.charCodeAt(i / 2);
        let xorValue = value1 ^ value2;

        c.push(String.fromCharCode(xorValue))
    }

    return c.join('');
}

function pProcess(string) {
    const READY_REGEX = /(?:#EXT-X-MEDIA-READY: *(\w+))\r?\n?/;
    let result = READY_REGEX.exec(string);
    let data = decrypt(result[1], 'bla_bla_bla');
    let ready = stringToArrayBuffer(data);
    let iv = '0x' + buf2hex(ready.slice(20, 36));
    let key = window.boomstreamConfig.bases.api + '/process/' + encrypt(data.slice(0, 20) + window.boomstreamConfig.mediaData.token, 'bla_bla_bla');
    return string.replace('[KEY]', key).replace('[IV]', iv);
}

fetch(window.boomstreamConfig.mediaData.links.hls)
    .then(res => res.text())
    .then(playlist => playlist.match(/(https:\/\/m\d{1,2}\.boomstream\.com.+)/g)[0])
    .then(fetch)
    .then(res => res.text())
    .then(text => 
      saveAs(new Blob([window.boomstreamConfig.encrypt ? pProcess(text) : text], { type: 'text/plain;charset=utf-8;' }), `${window.boomstreamConfig.mediaData.title}.m3u8`)
    );

https://github.com/pensnarik/boomstream-downloader

https://github.com/pensnarik/boomstream-downloader

Why this git has removed ?