main.py

import requests,os
import json
import base64
from Crypto.Cipher import AES
from Crypto.Util.Padding import pad

"""
https://music.163.com/#/song?id=185712&uct2=U2FsdGVkX19PT0cm3ueJvJ4JXn+b2vEcUb0GQNwe8yQ=

https://music.163.com/weapi/song/enhance/player/url/v1?csrf_token=2fb6cc6377a894024751cdc64891d60b
"params":"WSWsXUOu+d4xA0XBXYYJlFUilQ5g2xGaCRj8XJE5yhbF7LUnPyHYeVXZ5mQrmBMkTZz+n0m7TIaKl4SZGHa0rt/vvbtzg95keYaTLCygUpS+DPwBl1vsbbTZC4j4NMl6PKbQFraNVMVvBg0X3CtTTglCanANjKoV0uogvO9O6RsruarZeF9uFE/iiArlZFFyMznijByc0/33meM5WPMYCQ=="
"encSecKey":"bfa74a4cf67ff5990281d9076cc1355b586bce60d0d7f066fb445a30a950e97134865f9d8011bed4b7116dd1f82a224e8a8cfadba765cfd53c1c4aafc2823a7f2a7805161592483331a231201d477a32035793c81919604a5c6edd1b92f2536b546aaffbd0559114c5f84925ffa1e406cc5af63832e77e18bd09aaeeea4521b3"

=====================================================================================================================================
后面加密参数都是定值
var bWo2x = window.asrsea(JSON.stringify(i6c), bod1x(["流泪", "强"]), bod1x(AY2x.md), bod1x(["爱心", "女孩", "惊恐", "大笑"]));
            e6c.data = j6d.cq7j({
                params: bWo2x.encText,
                encSecKey: bWo2x.encSecKey
            })

var bWo2x = window.asrsea(JSON.stringify(i6c), "010001", "00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7", "0CoJUm6Qyw8W8jud");
            e6c.data = j6d.cq7j({
                params: bWo2x.encText,
                encSecKey: bWo2x.encSecKey
            })

i6c = {
csrf_token: "2fb6cc6377a894024751cdc64891d60b",
encodeTyp: "aac",
ids: "[185712]", #歌曲的id，后面应该从链接里截取
level: "exhigh"
}

==========================================================

function b(a, b) {
        var c = CryptoJS.enc.Utf8.parse(b)
          , d = CryptoJS.enc.Utf8.parse("0102030405060708")
          , e = CryptoJS.enc.Utf8.parse(a)
          , f = CryptoJS.AES.encrypt(e, c, {
            iv: d,
            mode: CryptoJS.mode.CBC
        });
        return f.toString()
    }
    function c(a, b, c) {
        var d, e;
        return setMaxDigits(131),    #这边全要换成python的写法
        d = new RSAKeyPair(b,"",c),
        e = encryptedString(d, a)
    }
    function d(d, e, f, g) {
        var h = {}
          , i = a(16);    #调用a函数生成16位随机数当密钥，后面直接写死就行
        return h.encText = b(d, g),
        h.encText = b(h.encText, i),
        h.encSecKey = c(i, e, f), 
        h
    }

function encryptedString(a, b) {   #加密逻辑后面看看直接整合到c函数
    for (var f, g, h, i, j, k, l, c = new Array, d = b.length, e = 0; d > e; )
        c[e] = b.charCodeAt(e),
        e++;
    for (; 0 != c.length % a.chunkSize; )
        c[e++] = 0;
    for (f = c.length,
    g = "",
    e = 0; f > e; e += a.chunkSize) {
        for (j = new BigInt,
        h = 0,
        i = e; i < e + a.chunkSize; ++h)
            j.digits[h] = c[i++],
            j.digits[h] += c[i++] << 8;
        k = a.barrett.powMod(j, a.e),
        l = 16 == a.radix ? biToHex(k) : biToString(k, a.radix),
        g += l + " "
    }
    return g.substring(0, g.length - 1)
}
"""

def b(a, b):
    iv = b"0102030405060708"
    cipher = AES.new(b.encode('utf-8'), AES.MODE_CBC, iv)
    encrypted = cipher.encrypt(pad(a.encode('utf-8'), 16))
    return base64.b64encode(encrypted).decode('utf-8')

def c(a, b, c):
    exponent = int(b, 16)
    modulus = int(c, 16)
    
    chunkSize = 128
    char_codes = [ord(char) for char in a]
    
    while len(char_codes) % chunkSize != 0:
        char_codes.append(0)

    res_blocks = []
    for i in range(0, len(char_codes), chunkSize):
        block_val = 0
        digit_h = 0
        for j in range(i, i + chunkSize, 2):
            char1 = char_codes[j]
            char2 = char_codes[j+1] if (j+1) < (i + chunkSize) else 0
            
            current_digit = char1 + (char2 << 8)
            block_val += current_digit << (16 * digit_h)
            digit_h += 1

        encrypted_val = pow(block_val, exponent, modulus)
        res_blocks.append(format(encrypted_val, 'x').zfill(256))
        
    return "".join(res_blocks)

def d(d_param, e, f, g):
    h = {}
    k = {}
    i = "6jWJBkxTnJq9f5Qx"
    text = json.dumps(d_param, separators=(',', ':'))
    print("原始请求数据：",text)
    k["encText"] = b(text, g)
    h["params"] = b(k["encText"], i)
    h["encSecKey"] = c(i, e, f)   
    return h

share_url = input("请输入网易云音乐分享链接：")
id = share_url.split("id=")[1].split("&")[0]
print("=============================================")

song_url = {
    "csrf_token":f"",
    "encodeType":f"aac",
    "ids":f"[{id}]",
    "level":"exhigh"
}

song_info = {
"c": f'[{{"id":"{id}"}}]',
"csrf_token":"",
"id":f"{id}"
}

url1 ="https://music.163.com/weapi/song/enhance/player/url/v1?csrf_token="
url_info = "https://music.163.com/weapi/v3/song/detail"


headers = {
    "User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36",
    "referer": "https://music.163.com/",
    "Cookie": r"MUSIC_A_T=1718194333545; MUSIC_R_T=1718194333818; JSESSIONID-WYYY=RjxHwtjxfl3aqWMd0Y5YhTMCk1fpH5daocB%2FUcwHdw2ntUiC3V%5CaSiW436An6UidGmjU8WtxQRMKZTq0QvO24%2FUorTr6kx9Z9o%2Fl9BM50SasZalB7OOOsd7tgulXkE%5CyjOkJeq2D5Cmrg78aghwhrCUqrK4sa9Utl1b5o57TvxYluSSS%3A1771130333732; _iuqxldmzr_=32; NMTID=00Oyf3SKO00IvJsmELkqpsDur93i_sAAAGZRuwc5g; WEVNSM=1.0.0; WNMCID=omusrd.1757831503383.01.0; sDeviceId=YD-O2ZFqHvLH0lEB0EQUFOT13Q5rOVZYf19; MUSIC_U=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; __csrf=a0a74f9f8d2447abe95e5ad94f736130; ntes_kaola_ad=1"
}

# 爬取歌曲信息
data = d(song_info,"010001","00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7","0CoJUm6Qyw8W8jud")
resp = requests.post(url_info, headers=headers, data=data)
song_base_info = resp.json()
song_name = song_base_info['songs'][0]['name']
auth_name = song_base_info['songs'][0]['ar'][0]['name']
album_name = song_base_info['songs'][0]['al']['name']

# 歌曲链接
result = d(song_url,"010001","00e0b509f6259df8642dbc35662901477df22677ec152b5ff68ace615bb7b725152b3ab17a876aea8a5aa76d2e417629ec4ee341f56135fccf695280104e0312ecbda92557c93870114af6c9d05c4f7f0c3685b7a46bee255932575cce10b424d813cfe4875d3e82047b97ddef52741d546b8e289dc6935b3ece0462db0a22b8e7","0CoJUm6Qyw8W8jud")
print("=============================================")
print("加密：",result)
print("=============================================")
resp = requests.post(url1, headers=headers, data=result)
res1 = resp.json()
songUrl = res1["data"][0]["url"]

print("解析成功！")
print("=============================================")
print("歌曲名称：", song_name)
print("歌手名称：", auth_name)
print("专辑名称：", album_name)
print("下载链接：", songUrl)
print("=============================================")
print("正在下载...")

if not os.path.exists("./music"):
    os.makedirs("./music")
with open(f"./music/{song_name} - {auth_name}.m4a", "wb") as f:
    f.write(requests.get(songUrl).content)
print(f"下载完成！文件路径./music/{song_name} - {auth_name}.m4a")