114 lines
3.5 KiB
Python
114 lines
3.5 KiB
Python
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import hmac
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import hashlib
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import time
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import urllib.parse
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from functools import reduce
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from hashlib import md5
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from aiohttp import ClientSession
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# doc: https://github.com/SocialSisterYi/bilibili-API-collect/blob/master/docs/misc/sign/wbi.md
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headers = {
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"User-Agent": "Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36"
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}
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# fmt: off
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mixinKeyEncTab = [
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46, 47, 18, 2, 53, 8, 23, 32, 15, 50, 10, 31, 58, 3, 45, 35, 27, 43, 5, 49,
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33, 9, 42, 19, 29, 28, 14, 39, 12, 38, 41, 13, 37, 48, 7, 16, 24, 55, 40,
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61, 26, 17, 0, 1, 60, 51, 30, 4, 22, 25, 54, 21, 56, 59, 6, 63, 57, 62, 11,
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36, 20, 34, 44, 52
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]
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# fmt: on
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def getMixinKey(orig: str):
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"对 imgKey 和 subKey 进行字符顺序打乱编码"
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return reduce(lambda s, i: s + orig[i], mixinKeyEncTab, "")[:32]
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def encWbi(params: dict, img_key: str, sub_key: str):
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"为请求参数进行 wbi 签名"
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mixin_key = getMixinKey(img_key + sub_key)
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curr_time = round(time.time())
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params["wts"] = curr_time # 添加 wts 字段
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params = dict(sorted(params.items())) # 按照 key 重排参数
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# 过滤 value 中的 "!'()*" 字符
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params = {
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k: "".join(filter(lambda chr: chr not in "!'()*", str(v)))
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for k, v in params.items()
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}
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query = urllib.parse.urlencode(params) # 序列化参数
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wbi_sign = md5((query + mixin_key).encode()).hexdigest() # 计算 w_rid
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params["w_rid"] = wbi_sign
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return params
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async def getWbiKeys():
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"获取最新的 img_key 和 sub_key"
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async with ClientSession(headers=headers) as session:
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async with session.get("https://api.bilibili.com/x/web-interface/nav") as resp:
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json_content = await resp.json()
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img_url: str = json_content["data"]["wbi_img"]["img_url"]
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sub_url: str = json_content["data"]["wbi_img"]["sub_url"]
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img_key = img_url.rsplit("/", 1)[1].split(".")[0]
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sub_key = sub_url.rsplit("/", 1)[1].split(".")[0]
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return img_key, sub_key
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async def get_query(params: dict):
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"""
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获取签名后的查询参数
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"""
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img_key, sub_key = await getWbiKeys()
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signed_params = encWbi(params=params, img_key=img_key, sub_key=sub_key)
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query = urllib.parse.urlencode(signed_params)
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return query
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def hmac_sha256(key, message):
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"""
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使用HMAC-SHA256算法对给定的消息进行加密
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:param key: 密钥
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:param message: 要加密的消息
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:return: 加密后的哈希值
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"""
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# 将密钥和消息转换为字节串
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key = key.encode("utf-8")
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message = message.encode("utf-8")
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# 创建HMAC对象，使用SHA256哈希算法
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hmac_obj = hmac.new(key, message, hashlib.sha256)
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# 计算哈希值
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hash_value = hmac_obj.digest()
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# 将哈希值转换为十六进制字符串
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hash_hex = hash_value.hex()
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return hash_hex
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async def get_ticket():
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"""
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获取ticket
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"""
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o = hmac_sha256("XgwSnGZ1p", f"ts{int(time.time())}")
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url = "https://api.bilibili.com/bapis/bilibili.api.ticket.v1.Ticket/GenWebTicket"
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params = {
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"key_id": "ec02",
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"hexsign": o,
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"context[ts]": f"{int(time.time())}",
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"csrf": "",
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}
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async with ClientSession(headers=headers) as session:
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async with session.post(url, params=params) as resp:
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json_content = await resp.json()
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return json_content["data"]["ticket"]
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if __name__ == "__main__":
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import asyncio
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loop = asyncio.get_event_loop()
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loop.run_until_complete(get_ticket())
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