Doiiars
139 lines
5.0 KiB
Python
139 lines
5.0 KiB
Python
# 声明：本代码仅供学习和研究目的使用。使用者应遵守以下原则：
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# 1. 不得用于任何商业用途。
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# 2. 使用时应遵守目标平台的使用条款和robots.txt规则。
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# 3. 不得进行大规模爬取或对平台造成运营干扰。
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# 4. 应合理控制请求频率，避免给目标平台带来不必要的负担。
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# 5. 不得用于任何非法或不当的用途。
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#
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# 详细许可条款请参阅项目根目录下的LICENSE文件。
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# 使用本代码即表示您同意遵守上述原则和LICENSE中的所有条款。
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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 re
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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 model.m_bilibili import VideoUrlInfo, CreatorUrlInfo
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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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return req_data
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def parse_video_info_from_url(url: str) -> VideoUrlInfo:
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"""
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从B站视频URL中解析出视频ID
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Args:
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url: B站视频链接
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- https://www.bilibili.com/video/BV1dwuKzmE26/?spm_id_from=333.1387.homepage.video_card.click
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- https://www.bilibili.com/video/BV1d54y1g7db
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- BV1d54y1g7db (直接传入BV号)
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Returns:
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VideoUrlInfo: 包含视频ID的对象
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"""
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# 如果传入的已经是BV号,直接返回
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if url.startswith("BV"):
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return VideoUrlInfo(video_id=url)
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# 使用正则表达式提取BV号
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# 匹配 /video/BV... 或 /video/av... 格式
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bv_pattern = r'/video/(BV[a-zA-Z0-9]+)'
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match = re.search(bv_pattern, url)
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if match:
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video_id = match.group(1)
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return VideoUrlInfo(video_id=video_id)
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raise ValueError(f"无法从URL中解析出视频ID: {url}")
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def parse_creator_info_from_url(url: str) -> CreatorUrlInfo:
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"""
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从B站创作者空间URL中解析出创作者ID
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Args:
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url: B站创作者空间链接
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- https://space.bilibili.com/434377496?spm_id_from=333.1007.0.0
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- https://space.bilibili.com/20813884
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- 434377496 (直接传入UID)
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Returns:
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CreatorUrlInfo: 包含创作者ID的对象
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"""
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# 如果传入的已经是纯数字ID,直接返回
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if url.isdigit():
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return CreatorUrlInfo(creator_id=url)
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# 使用正则表达式提取UID
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# 匹配 /space.bilibili.com/数字 格式
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uid_pattern = r'space\.bilibili\.com/(\d+)'
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match = re.search(uid_pattern, url)
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if match:
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creator_id = match.group(1)
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return CreatorUrlInfo(creator_id=creator_id)
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raise ValueError(f"无法从URL中解析出创作者ID: {url}")
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if __name__ == '__main__':
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# 测试视频URL解析
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video_url1 = "https://www.bilibili.com/video/BV1dwuKzmE26/?spm_id_from=333.1387.homepage.video_card.click"
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video_url2 = "BV1d54y1g7db"
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print("视频URL解析测试:")
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print(f"URL1: {video_url1} -> {parse_video_info_from_url(video_url1)}")
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print(f"URL2: {video_url2} -> {parse_video_info_from_url(video_url2)}")
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# 测试创作者URL解析
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creator_url1 = "https://space.bilibili.com/434377496?spm_id_from=333.1007.0.0"
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creator_url2 = "20813884"
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print("\n创作者URL解析测试:")
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print(f"URL1: {creator_url1} -> {parse_creator_info_from_url(creator_url1)}")
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print(f"URL2: {creator_url2} -> {parse_creator_info_from_url(creator_url2)}")
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