97 lines
3.0 KiB
Python
97 lines
3.0 KiB
Python
"""虎牙 Cookie 规范化工具。"""
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from __future__ import annotations
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import json
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from collections.abc import Iterable, Mapping
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from requests.cookies import RequestsCookieJar
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def cookie_pairs(cookie: str) -> list[tuple[str, str]]:
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"""把浏览器 Cookie 字符串拆成 key/value 对。"""
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pairs: list[tuple[str, str]] = []
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for part in (cookie or "").split(";"):
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item = part.strip()
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if not item or "=" not in item:
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continue
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key, value = item.split("=", 1)
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key = key.strip()
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if not key:
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continue
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pairs.append((key, value.strip()))
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return pairs
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def normalize_cookie_pairs(pairs: Iterable[tuple[str, str]]) -> str:
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"""按 Cookie key 去重，保留最后一次出现的值。"""
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ordered_keys: list[str] = []
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values: dict[str, str] = {}
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for raw_key, raw_value in pairs:
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key = str(raw_key).strip()
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if not key:
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continue
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if key not in values:
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ordered_keys.append(key)
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values[key] = "" if raw_value is None else str(raw_value).strip()
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return "; ".join(f"{key}={values[key]}" for key in ordered_keys)
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def normalize_huya_cookie(
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cookie: str | Mapping[str, str] | RequestsCookieJar | None,
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) -> str:
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"""把 Cookie 字符串、dict 或 CookieJar 转成去重后的浏览器 Cookie 字符串。"""
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if not cookie:
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return ""
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if isinstance(cookie, str):
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return normalize_cookie_pairs(cookie_pairs(cookie))
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return normalize_cookie_pairs(
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[
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(str(key), "" if value is None else str(value))
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for key, value in cookie.items()
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]
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)
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def cookie_value(
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cookie: str | Mapping[str, str] | RequestsCookieJar | None, key: str
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) -> str:
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"""从 Cookie 中读取 key；有重复时以最后一次出现为准。"""
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if not cookie or not key:
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return ""
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if isinstance(cookie, str):
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pairs = cookie_pairs(cookie)
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else:
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pairs = list(cookie.items())
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value = ""
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for item_key, item_value in pairs:
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if item_key == key:
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value = "" if item_value is None else str(item_value).strip()
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return value
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def browser_login_script(
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pairs: Mapping[str, str],
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target_url: str,
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*,
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domain: str = ".huya.com",
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ttl_days: int = 180,
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) -> str:
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"""生成在用户自己浏览器控制台执行的登录脚本。
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脚本把 Cookie 写入指定域后跳转目标页；Cookie 值以 JSON 数组内联，
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保证引号、反斜杠等字符安全转义。
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"""
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payload = json.dumps(
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[[key, value] for key, value in pairs.items()], ensure_ascii=False
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)
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target = json.dumps(target_url, ensure_ascii=False)
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ttl_ms = max(1, ttl_days) * 86_400_000
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return (
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f"(function(){{var c={payload};"
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f"var e=new Date(Date.now()+{ttl_ms}).toUTCString();"
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f"for(var i=0;i<c.length;i++){{"
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f"document.cookie=c[i][0]+'='+c[i][1]+';domain={domain};path=/;expires='+e;"
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f"}}location.href={target};}})();"
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)
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