From 27fa079145961b6e7bf22d8f1388af9120272bab Mon Sep 17 00:00:00 2001
From: wbt5 <wubangtu@qq.com>
Date: Tue, 18 Aug 2020 21:48:04 +0800
Subject: [PATCH] =?UTF-8?q?=E6=96=B0=E5=A2=9E=E8=89=BA=E6=B0=94=E5=B1=B1?=
 =?UTF-8?q?=E7=9B=B4=E6=92=AD=E5=BC=B9=E5=B9=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 danmu/danmaku/_173.py | 137 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 danmu/danmaku/_173.py

diff --git a/danmu/danmaku/_173.py b/danmu/danmaku/_173.py
new file mode 100644
index 0000000..8ec8205
--- /dev/null
+++ b/danmu/danmaku/_173.py
@@ -0,0 +1,137 @@
+import binascii
+import struct
+
+import requests
+from Crypto.Cipher import DES
+from Crypto.Util.Padding import pad
+
+from . import _173_pb2 as pb
+
+
+class YiQiShan:
+    ws_url = 'wss://websocket.173.com/'
+
+    def __init__(self, rid):
+        self.rid = str(rid)
+        self.key = b'e#>&*m16'
+        with requests.Session() as se:
+            res = se.get('http://www.173.com/{}'.format(rid))
+            try:
+                self.uuid, _, token, _ = res.cookies.values()
+            except ValueError:
+                raise Exception('房间不存在')
+        self.accesstoken = binascii.a2b_hex(token)
+        s = YiQiShan.des_decode(self.accesstoken, self.key)
+        p = pb.Token()
+        p.ParseFromString(s)
+        self.gtkey = p.gtkey[:8]
+
+    @staticmethod
+    def des_encode(t, key):
+        t = pad(t, DES.block_size)
+        c = DES.new(key, DES.MODE_ECB)
+        res = c.encrypt(t)
+        return res
+
+    @staticmethod
+    def des_decode(t, key):
+        c = DES.new(key, DES.MODE_ECB)
+        res = c.decrypt(t)
+        length = len(res)
+        padding = res[length - 1]
+        res = res[0:length - padding]
+        return res
+
+    def startup(self):
+        p = pb.TCPAccessReq()
+        p.AccessToken = self.accesstoken
+        return p.SerializeToString()
+
+    def tcphelloreq(self):
+        p = pb.TcpHelloReq()
+        p.uuid = self.uuid
+        return p.SerializeToString()
+
+    def enterroomreq(self):
+        p = pb.EnterRoomReq()
+        p.uuid = self.uuid.encode()
+        p.roomid = self.rid.encode()
+        return p.SerializeToString()
+
+    def roomhelloreq(self):
+        p = pb.RoomHelloReq()
+        p.uuid = self.uuid.encode()
+        p.roomid = self.rid.encode()
+        return p.SerializeToString()
+
+    def pack(self, paylod_type):
+        command = {
+            'startup': 123,
+            'tcphelloreq': 122,
+            'enterroomreq': 601,
+            'roomhelloreq': 600
+        }
+        subcmd = {
+            'startup': 0,
+            'tcphelloreq': 0,
+            'enterroomreq': 1,
+            'roomhelloreq': 1
+        }
+        p = pb.CSHead()
+        p.command = command[paylod_type]
+        p.subcmd = subcmd[paylod_type]
+        p.uuid = self.uuid.encode()
+        p.clientType = 4
+        p.routeKey = int(self.rid)
+        n = p.SerializeToString()
+
+        key = self.key if paylod_type == 'startup' else self.gtkey
+        payload = getattr(self, paylod_type)()
+        s = YiQiShan.des_encode(payload, key)
+
+        buf = struct.pack('!HcH', len(n) + len(s) + 8, b'W', len(n))
+        buf += n
+        buf += struct.pack('!H', len(s))
+        buf += s + b'M'
+        return buf
+
+    def unpack(self, data):
+        msgs = [{'name': '', 'content': '', 'msg_type': 'other'}]
+
+        s, = struct.unpack_from('!h', data, 3)
+        p, = struct.unpack_from('!h', data, 5 + s)
+        u = data[7 + s:7 + s + p]
+
+        a = pb.CSHead()
+        a.ParseFromString(data[5:5 + s])
+        cmd = a.command
+        key = self.key if cmd == 123 else self.gtkey
+        t = u if cmd == 102 else YiQiShan.des_decode(u, key)
+
+        o = cmd
+        # r = a.subcmd
+        if o == 102:
+            p = pb.SendBroadcastPkg()
+            p.ParseFromString(t)
+            for i in p.broadcastmsg:
+                # PublicChatNotify = 1
+                # BUSINESS_TYPE_FREE_GIFT = 2
+                # BUSINESS_TYPE_PAY_GIFT = 3
+                if i.businesstype == 1:  # 发言
+                    q = pb.PublicChatNotify()
+                    q.ParseFromString(i.content)
+                    user = q.nick.decode()
+                    content = q.info.textmsg.decode()
+                # elif i.businesstype == 2: # 免费礼物
+                #     print(i.businesstype)
+                #     q = pb.NotifyFreeGift()
+                #     q.ParseFromString(i.content)
+                # elif i.businesstype == 3: # 收费礼物
+                #     print(i.businesstype)
+                #     q = pb.GiftNotyInfo()
+                #     q.ParseFromString(i.content)
+                # else:
+                #     pass
+                    msg = {'name': user, 'content': content, 'msg_type': 'danmaku'}
+                    msgs.append(msg.copy())
+        return msgs