72 lines
2.7 KiB
Python
72 lines
2.7 KiB
Python
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# -*- coding: utf-8 -*-
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# @Author : relakkes@gmail.com
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# @Time : 2023/12/2 23:26
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# @Desc : bilibili 请求参数签名
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# 逆向实现参考：https://socialsisteryi.github.io/bilibili-API-collect/docs/misc/sign/wbi.html#wbi%E7%AD%BE%E5%90%8D%E7%AE%97%E6%B3%95
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import urllib.parse
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from hashlib import md5
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from typing import Dict
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from tools import utils
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class BilibiliSign:
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def __init__(self, img_key: str, sub_key: str):
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self.img_key = img_key
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self.sub_key = sub_key
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self.map_table = [
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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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def get_salt(self) -> str:
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"""
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获取加盐的 key
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:return:
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"""
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salt = ""
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mixin_key = self.img_key + self.sub_key
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for mt in self.map_table:
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salt += mixin_key[mt]
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return salt[:32]
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def sign(self, req_data: Dict) -> Dict:
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"""
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请求参数中加上当前时间戳对请求参数中的key进行字典序排序
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再将请求参数进行 url 编码集合 salt 进行 md5 就可以生成w_rid参数了
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:param req_data:
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:return:
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"""
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current_ts = utils.get_unix_timestamp()
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req_data.update({"wts": current_ts})
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req_data = dict(sorted(req_data.items()))
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req_data = {
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# 过滤 value 中的 "!'()*" 字符
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k: ''.join(filter(lambda ch: ch not in "!'()*", str(v)))
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for k, v
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in req_data.items()
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}
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query = urllib.parse.urlencode(req_data)
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salt = self.get_salt()
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wbi_sign = md5((query + salt).encode()).hexdigest() # 计算 w_rid
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req_data['w_rid'] = wbi_sign
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# print(urllib.parse.urlencode(req_data))
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return req_data
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if __name__ == '__main__':
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_img_key = "7cd084941338484aae1ad9425b84077c"
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_sub_key = "4932caff0ff746eab6f01bf08b70ac45"
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_search_url = "category_id=&search_type=video&ad_resource=5654&__refresh__=true&_extra=&context=&page=1&page_size=42&order=click&from_source=&from_spmid=333.337&platform=pc&highlight=1&single_column=0&keyword=python&qv_id=OQ8f2qtgYdBV1UoEnqXUNUl8LEDAdzsD&source_tag=3&gaia_vtoken=&dynamic_offset=0&web_location=1430654"
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_req_data = dict()
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for params in _search_url.split("&"):
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kvalues = params.split("=")
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key = kvalues[0]
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value = kvalues[1]
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_req_data[key] = value
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print("pre req_data", _req_data)
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_req_data = BilibiliSign(img_key=_img_key, sub_key=_sub_key).sign(req_data=_req_data)
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print(_req_data)
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