新增eapi算法

module/batch.js

@@ -0,0 +1,14 @@
+module.exports = (query, request) => {
+  const data = {
+    "e_r": true
+  };
+  Object.keys(query).forEach(i => {
+    if (/^\/api\//.test(i)) {
+      data[i] = query[i]
+    }
+  })
+  return request(
+    'POST', `http://music.163.com/eapi/batch`, data,
+    {crypto: 'eapi', proxy: query.proxy, url: '/api/batch', cookie: query.cookie}
+  )
+};

util/crypto.js

@@ -4,6 +4,7 @@ const presetKey = Buffer.from('0CoJUm6Qyw8W8jud')
 const linuxapiKey = Buffer.from('rFgB&h#%2?^eDg:Q')
 const base62 = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
 const publicKey = '-----BEGIN PUBLIC KEY-----\nMIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDgtQn2JZ34ZC28NWYpAUd98iZ37BUrX/aKzmFbt7clFSs6sXqHauqKWqdtLkF2KexO40H1YTX8z2lSgBBOAxLsvaklV8k4cBFK9snQXE9/DDaFt6Rr7iVZMldczhC0JNgTz+SHXT6CBHuX3e9SdB1Ua44oncaTWz7OBGLbCiK45wIDAQAB\n-----END PUBLIC KEY-----'
+const eapiKey = 'e82ckenh8dichen8'
 
 const aesEncrypt = (buffer, mode, key, iv) => {
     const cipher = crypto.createCipheriv('aes-128-' + mode, key, iv)
@@ -31,4 +32,19 @@ const linuxapi = (object) => {
     }
 }
 
-module.exports = {weapi, linuxapi}
+const eapi = (url, object) => {
+    const text = typeof object === 'object' ? JSON.stringify(object) : object;
+    const message = `nobody${url}use${text}md5forencrypt`
+    const digest = crypto.createHash('md5').update(message).digest('hex')
+    const data = `${url}-36cd479b6b5-${text}-36cd479b6b5-${digest}`
+    return {
+        params: aesEncrypt(Buffer.from(data), 'ecb', eapiKey, '').toString('hex').toUpperCase()
+    }
+}
+
+const decrypt = cipherBuffer => {
+    const decipher = crypto.createDecipheriv('aes-128-ecb',eapiKey,'')
+    return Buffer.concat([decipher.update(cipherBuffer), decipher.final()])
+}
+
+module.exports = {weapi, linuxapi, eapi, decrypt}

util/request.js

@@ -2,6 +2,7 @@ const encrypt = require('./crypto')
 const request = require('request')
 const queryString = require('querystring')
 const PacProxyAgent = require('pac-proxy-agent')
+const zlib = require('zlib')
 
 // request.debug = true // 开启可看到更详细信息
 
@@ -25,8 +26,8 @@ const chooseUserAgent = ua => {
   let index = 0
   if (typeof ua == 'undefined')
     index = Math.floor(Math.random() * userAgentList.length)
-  else if (ua == 'mobile') index = Math.floor(Math.random() * 7)
-  else if (ua == 'pc') index = Math.floor(Math.random() * 5) + 8
+  else if (ua === 'mobile') index = Math.floor(Math.random() * 7)
+  else if (ua === 'pc') index = Math.floor(Math.random() * 5) + 8
   else return ua
   return userAgentList[index]
 }
@@ -34,7 +35,7 @@ const chooseUserAgent = ua => {
 const createRequest = (method, url, data, options) => {
   return new Promise((resolve, reject) => {
     let headers = { 'User-Agent': chooseUserAgent(options.ua) }
-    if (method.toUpperCase() == 'POST')
+    if (method.toUpperCase() === 'POST')
       headers['Content-Type'] = 'application/x-www-form-urlencoded'
     if (url.includes('music.163.com'))
       headers['Referer'] = 'https://music.163.com'
@@ -51,12 +52,12 @@ const createRequest = (method, url, data, options) => {
         .join('; ')
     else if (options.cookie) headers['Cookie'] = options.cookie
 
-    if (options.crypto == 'weapi') {
+    if (options.crypto === 'weapi') {
       let csrfToken = (headers['Cookie'] || '').match(/_csrf=([^(;|$)]+)/)
       data.csrf_token = csrfToken ? csrfToken[1] : ''
       data = encrypt.weapi(data)
       url = url.replace(/\w*api/, 'weapi')
-    } else if (options.crypto == 'linuxapi') {
+    } else if (options.crypto === 'linuxapi') {
       data = encrypt.linuxapi({
         method: method,
         url: url.replace(/\w*api/, 'api'),
@@ -65,6 +66,35 @@ const createRequest = (method, url, data, options) => {
       headers['User-Agent'] =
         'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.90 Safari/537.36'
       url = 'https://music.163.com/api/linux/forward'
+    } else if (options.crypto === 'eapi') {
+      const cookie = options.cookie || {};
+      const csrfToken = cookie['__csrf'] || ''
+      const header = {
+        "osver": cookie.osver, //系统版本
+        "deviceId": cookie.deviceId, //encrypt.base64.encode(imei + '\t02:00:00:00:00:00\t5106025eb79a5247\t70ffbaac7')
+        "appver": cookie.appver || "6.1.1", // app版本
+        "versioncode":  cookie.versioncode || "140", //版本号
+        "mobilename": cookie.mobilename, //设备model
+        "buildver": cookie.buildver || Date.now().toString().substr(0, 10),
+        "resolution": cookie.resolution || "1920x1080", //设备分辨率
+        "__csrf": csrfToken,
+        "os": cookie.os || 'android',
+        "channel": cookie.channel,
+        "requestId":`${Date.now()}_${Math.floor(Math.random() * 1000).toString().padStart(4, '0')}`
+      }
+      if (cookie.MUSIC_U) header["MUSIC_U"] = cookie.MUSIC_U
+      if (cookie.MUSIC_A) header["MUSIC_A"] = cookie.MUSIC_A
+      headers['Cookie'] = Object.keys(header)
+        .map(
+          key =>
+            encodeURIComponent(key) +
+            '=' +
+            encodeURIComponent(header[key])
+        )
+        .join('; ')
+      data.header = header
+      data = encrypt.eapi(options.url, data)
+      url = url.replace(/\w*api/,'eapi')
     }
 
     const answer = { status: 500, body: {}, cookie: [] }
@@ -75,6 +105,8 @@ const createRequest = (method, url, data, options) => {
       body: queryString.stringify(data)
     }
 
+    if (options.crypto === 'eapi') settings.encoding = null
+
     if (/\.pac$/i.test(options.proxy)) {
       settings.agent = new PacProxyAgent(options.proxy)
     } else {
@@ -93,12 +125,41 @@ const createRequest = (method, url, data, options) => {
             x.replace(/\s*Domain=[^(;|$)]+;*/, '')
           )
           try {
-            answer.body = JSON.parse(body)
-            answer.status = answer.body.code || res.statusCode
+            if (options.crypto === 'eapi') {
+
+              zlib.unzip(body, function (err, buffer) {
+                const _buffer = err ? body : buffer
+                try {
+                  try{
+                    answer.body = JSON.parse(encrypt.decrypt(_buffer).toString())
+                    answer.status = answer.body.code || res.statusCode
+                  } catch(e){
+                    answer.body = JSON.parse(_buffer.toString())
+                    answer.status = res.statusCode
+                  }
+                } catch (e) {
+                  answer.body = _buffer.toString()
+                  answer.status = res.statusCode
+                }
+                answer.status =
+                  100 < answer.status && answer.status < 600 ? answer.status : 400
+                if (answer.status === 200) resolve(answer)
+                else reject(answer)
+              });
+              return false
+
+            } else {
+
+              answer.body = JSON.parse(body)
+              answer.status = answer.body.code || res.statusCode
+
+            }
+
           } catch (e) {
             answer.body = body
             answer.status = res.statusCode
           }
+
           answer.status =
             100 < answer.status && answer.status < 600 ? answer.status : 400
           if (answer.status == 200) resolve(answer)