upgrade version 2.0,add login api,upgrade api verison,add document and unit test

util/crypto.js

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+// 参考 https://github.com/darknessomi/musicbox/wiki/
+'use strict'
+const crypto = require('crypto')
+const bigInt = require('big-integer')
+const modulus = '00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7'
+const nonce = '0CoJUm6Qyw8W8jud'
+const pubKey = '010001'
+
+String.prototype.hexEncode = function(){
+    let hex, i
+
+    let result = ""
+    for (i=0; i<this.length; i++) {
+        hex = this.charCodeAt(i).toString(16)
+        result += (""+hex).slice(-4)
+    }
+    return result
+}
+
+function createSecretKey(size) {
+  const keys = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+  let key = ""
+  for (let i = 0; i < size; i++) {
+      let pos = Math.random() * keys.length
+      pos = Math.floor(pos)
+      key = key + keys.charAt(pos)
+  }
+  return key
+}
+
+function aesEncrypt(text, secKey) {
+  const _text = text
+  const lv = new Buffer('0102030405060708', "binary")
+  const _secKey = new Buffer(secKey, "binary")
+  const cipher = crypto.createCipheriv('AES-128-CBC', _secKey, lv)
+  let encrypted = cipher.update(_text, 'utf8', 'base64')
+  encrypted += cipher.final('base64')
+  return encrypted
+}
+
+function zfill(str, size) {
+    while (str.length < size) str = "0" + str
+    return str
+}
+
+function rsaEncrypt(text, pubKey, modulus) {
+  const _text = text.split('').reverse().join('')
+  const biText = bigInt(new Buffer(_text).toString('hex'), 16),
+      biEx = bigInt(pubKey, 16),
+      biMod = bigInt(modulus, 16),
+      biRet = biText.modPow(biEx, biMod)
+  return zfill(biRet.toString(16), 256)
+}
+
+function Encrypt(obj) {
+  const text = JSON.stringify(obj)
+  const secKey = createSecretKey(16)
+  const encText = aesEncrypt(aesEncrypt(text, nonce), secKey)
+  const encSecKey = rsaEncrypt(secKey, pubKey, modulus)
+  return {
+    params: encText,
+    encSecKey: encSecKey
+  }
+}
+
+module.exports = Encrypt

util/util.js

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+const Encrypt = require('./crypto.js')
+const http = require('http')
+function createWebAPIRequest(host, path, method, data, cookie, callback, errorcallback) {
+  let music_req = ''
+  const cryptoreq = Encrypt(data)
+  const http_client = http.request({
+    hostname: host,
+    method: method,
+    path: path,
+    headers: {
+      'Accept': '*/*',
+      'Accept-Language': 'zh-CN,zh;q=0.8,gl;q=0.6,zh-TW;q=0.4',
+      'Connection': 'keep-alive',
+      'Content-Type': 'application/x-www-form-urlencoded',
+      'Referer': 'http://music.163.com',
+      'Host': 'music.163.com',
+      'Cookie': cookie,
+      'User-Agent': 'Mozilla/5.0 (Macintosh; Intel Mac OS X 10_9_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/33.0.1750.152 Safari/537.36',
+
+    },
+  }, function (res) {
+    res.on('error', function (err) {
+      errorcallback(err)
+    })
+    res.setEncoding('utf8')
+    if (res.statusCode != 200) {
+      createWebAPIRequest(host, path, method, data, cookie, callback)
+      return
+    } else {
+      res.on('data', function (chunk) {
+        music_req += chunk
+      })
+      res.on('end', function () {
+        if (music_req == '') {
+          createWebAPIRequest(host, path, method, data, cookie, callback)
+          return
+        }
+        if (res.headers['set-cookie']) {
+          callback(music_req, res.headers['set-cookie'])
+        } else {
+          callback(music_req)
+        }
+      })
+    }
+  })
+  http_client.write('params=' + cryptoreq.params + '&encSecKey=' + cryptoreq.encSecKey)
+  http_client.end()
+}
+
+function createRequest(path, method, data, callback, errorcallback) {
+  return new Promise((resolve, reject) => {
+    let ne_req = ''
+    const http_client = http.request({
+      hostname: 'music.163.com',
+      method: method,
+      path: path,
+      headers: {
+        'Referer': 'http://music.163.com',
+        'Cookie': 'appver=2.0.2',
+        'Content-Type': 'application/x-www-form-urlencoded',
+      },
+    }, res => {
+      res.setEncoding('utf8')
+      res.on('error', err => {
+        reject(err)
+      })
+      res.on('data', chunk => {
+        ne_req += chunk
+      })
+      res.on('end', () => {
+        resolve(ne_req)
+      })
+    })
+    if (method == 'POST') {
+      http_client.write(data)
+    }
+    http_client.end()
+  })
+}
+module.exports = {
+  createWebAPIRequest,
+  createRequest
+}