✨ Add 央视频 (#95)

- 需要替换 headers 中登陆的 cookie
- 目前网页版链接有效时间很短，且每个IP每天的请求数量有限制
- APP版本的链接放时间更长，但需要反编译获取ckey生成方式，以后再更新。

yangshipin.py

@@ -0,0 +1,117 @@
+# -*- coding: utf-8 -*-
+# @Time: 2021/5/3 12:28
+# @Project: real-url
+# @Author: wbt5
+# @Blog: https://wbt5.com
+
+# CCTV-1: https://m.yangshipin.cn/video?type=1&vid=2000210103&pid=600001859
+# 需要替换 headers 中登陆的 cookie
+# 目前网页版链接有效时间很短，且每个IP每天的请求数量有限制
+# APP版本的链接放时间更长，但需要反编译获取ckey生成方式，以后再更新。
+
+import binascii
+import ctypes
+import time
+import uuid
+from urllib.parse import parse_qs
+
+import requests
+from Crypto.Cipher import AES
+
+
+def aes_encrypt(text):
+    """
+    AES加密
+    """
+    key = binascii.a2b_hex('4E2918885FD98109869D14E0231A0BF4')
+    iv = binascii.a2b_hex('16B17E519DDD0CE5B79D7A63A4DD801C')
+    pad = 16 - len(text) % 16
+    text = text + pad * chr(pad)
+    text = text.encode()
+    cipher = AES.new(key, AES.MODE_CBC, iv)
+    encrypt_bytes = cipher.encrypt(text)
+    return binascii.b2a_hex(encrypt_bytes).decode()
+
+
+class YangShiPin:
+
+    def __init__(self, rid):
+        var = parse_qs(rid)
+        vid, = var['vid']
+        pid, = var['pid']
+
+        platform = 4330701
+        guid = 'ko7djb70_vbjvrg5gcm'
+        txvlive_version = '3.0.37'
+        tt = int(time.time())
+        jc = 'mg3c3b04ba'
+        wu = f'|{vid}|{tt}|{jc}|{txvlive_version}|{guid}|{platform}|https://m.yangshipin.cn/|mozilla/5.0 (iphone; ' \
+             f'cpu||Mozilla|Netscape|Win32| '
+
+        u = 0
+        for i in wu:
+            _char = ord(i)
+            u = (u << 5) - u + _char
+            u &= u & 0xffffffff
+        bu = ctypes.c_int32(u).value
+
+        xu = f'|{bu}{wu}'
+        # ckey是个aes加密，CBC模式，pkcs7填充
+        ckey = ('--01' + aes_encrypt(xu)).upper()
+
+        self.params = {
+            'cmd': 2,
+            'cnlid': vid,
+            'pla': 0,
+            'stream': 2,
+            'system': 1,
+            'appVer': '3.0.37',
+            'encryptVer': '8.1',
+            'qq': 0,
+            'device': 'PC',
+            'guid': 'ko7djb70_vbjvrg5gcm',
+            'defn': 'auto',
+            'host': 'yangshipin.cn',
+            'livepid': pid,
+            'logintype': 1,
+            'vip_status': 1,
+            'livequeue': 1,
+            'fntick': tt,
+            'tm': tt,
+            'sdtfrom': 113,
+            'platform': platform,
+            'cKey': ckey,
+            'queueStatus': 0,
+            'uhd_flag': 4,
+            'flowid': uuid.uuid4().hex,
+            'sphttps': 1,
+            # 'callback': 'txvlive_videoinfoget_9046016361',
+        }
+
+    def get_real_url(self):
+        headers = {
+            'user-agent': 'Mozilla/5.0 (iPhone; CPU iPhone OS 13_2_3 like Mac OS X) AppleWebKit/605.1.15 (KHTML, '
+                          'like Gecko) Version/13.0.3 Mobile/15E148 Safari/604.1',
+            'referer': 'https://m.yangshipin.cn/',
+            'cookie': ''
+        }
+        res = requests.get('https://liveinfo.yangshipin.cn/', headers=headers, params=self.params).json()
+        url = res.get('playurl', 0)
+        if url:
+            return url
+        else:
+            return res
+
+
+def get_real_url(rid):
+    try:
+        ysp = YangShiPin(rid)
+        return ysp.get_real_url()
+    except Exception as e:
+        print('Exception：', e)
+        return False
+
+
+if __name__ == '__main__':
+    r = input('显示“无登录信息”，则需要填充cookie。请输入央视频地址：\n')
+    print(get_real_url(r))