feat: 匿名登录username算法

app.js

@@ -1,6 +1,5 @@
 #!/usr/bin/env node
 async function start() {
-  // 如果需要手动修改anonymous_token，需要注释generateConfig调用
   require('./server').serveNcmApi({
     checkVersion: true,
   })

module/register_anonimous.js

@@ -1,11 +1,34 @@
 // 游客登录
+const crypto = require('crypto')
+const ID_XOR_KEY_1 = Buffer.from('3go8&$833h0k(2)2')
+
+function cloudmusic_dll_encode_id(some_id) {
+  const xored = Buffer.from(
+    [...some_id].map(
+      (c, idx) => c.charCodeAt(0) ^ ID_XOR_KEY_1[idx % ID_XOR_KEY_1.length],
+    ),
+  )
+  const digest = crypto.createHash('md5').update(xored).digest()
+  return digest.toString('base64')
+}
+function createRandomDeviceId() {
+  const t = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'
+  const e = 6
+  let n = ''
+  for (let i = 0; i < e; i++) n += t.charAt(Math.floor(Math.random() * e))
+  return n
+}
 
 module.exports = async (query, request) => {
   query.cookie.os = 'iOS'
+  const deviceId = createRandomDeviceId()
+  const encodedId = Buffer.from(
+    `${deviceId} ${cloudmusic_dll_encode_id(deviceId)}`,
+  )
+  const username = encodedId.toString('base64')
   const data = {
     /* A base64 encoded string. */
-    username:
-      'MzEwMjcwYmY0Y2Y0ODcwMzU0ZDFkZmIxMmMzMGYyMTkgVlBaanMwNmtrb1BYMGxOVzVUMUJ3Zz09',
+    username: username,
   }
   let result = await request(
     'POST',