feat(python): 完成 Python 全量迁移——剩余平台、登录通道与公共层修复
- 新增 5sing/apple/xm/me/qt/lr 平台包与取流实现（含 xm-sign、MissEvan 签名、蜻蜓 HMAC、Apple developer token） - 新增 wy/kg/tx/lr 登录：扫码、手机号、账密（kg 20028 风控指纹）、cookie 绑定、kg/tx 续期 - request 层：保留多值 Set-Cookie；JSON body 紧凑化（修复 kg 网关验签）；直连不经系统代理（对齐 Node） - 登录路由统一 Body(embed=True)，修复扫码轮询 422；lifespan 接入登录续期调度 - ruff/format/pyright 全绿；14 平台真实联网与 HTTP 路由验证通过
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"""5sing 公共工具（对应 sdk/5sing/util.ts，上游 fivesing/fivesing.go 的等价实现）。
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平台 id 统一为 ``5sing``（上游 Go 包名 fivesing，model.Source 用 "fivesing"；本仓库契约要求 5sing）。
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上游 ``New(cookie)`` 的 cookie 实际参与请求（搜索 / getSongUrl / newget / 歌单页），
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这里从 auth_store 的 ``5sing`` 记录读取（无则匿名）。
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"""
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from __future__ import annotations
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import asyncio
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import math
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import re
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from typing import Any
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from urllib.parse import quote
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from app.sdk.auth_store import get_credentials
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from app.sdk.common.request import http_fetch
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UserAgent = (
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"Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36"
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)
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#: 上游 fivesing.go 的常量：手机端 API 主机（http 明文，实测无 302）
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MOBILE_API = "http://mobileapi.5sing.kugou.com"
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#: 搜索接口（type=0 单曲 / type=1 歌单）
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SEARCH_API = "http://search.5sing.kugou.com/home/json"
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#: 作品类型（上游 typeEname；yc=原创 fc=翻唱 bz=伴奏）
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SONG_KINDS: dict[str, str] = {"yc": "原创", "fc": "翻唱", "bz": "伴奏"}
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HTML_ENTITIES: dict[str, str] = {
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"amp": "&",
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"lt": "<",
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"gt": ">",
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"quot": '"',
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"apos": "'",
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"nbsp": " ",
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"copy": "©",
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"reg": "®",
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"hellip": "…",
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"mdash": "—",
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"ndash": "–",
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}
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def encode_uri_component(value: Any) -> str:
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return quote(str(value), safe="!~*'()")
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def get_first_valid(*urls: Any) -> str:
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"""上游 getFirstValid：返回第一个非空字符串（空串视为无效）。"""
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for url in urls:
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if url:
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return str(url)
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return ""
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def remove_em_tags(text: Any) -> str:
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"""去掉搜索结果里 ``<em class="keyword">`` 高亮标签。"""
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return str(text if text is not None else "").replace('<em class="keyword">', "").replace("</em>", "").strip()
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def unescape_html(text: Any) -> str:
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"""Go html.UnescapeString 的等价实现（常用实体 + 数字实体）。"""
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source = str(text if text is not None else "")
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def repl(match: re.Match[str]) -> str:
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entity = match.group(1)
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try:
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if entity.startswith(("#x", "#X")):
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return chr(int(entity[2:], 16))
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if entity.startswith("#"):
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return chr(int(entity[1:], 10))
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except ValueError:
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return match.group(0)
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return HTML_ENTITIES.get(entity.lower(), match.group(0))
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return re.sub(r"&(#x?[0-9a-fA-F]+|[a-zA-Z]+);", repl, source)
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def get_5sing_cookie() -> str:
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"""上游 New(cookie)：cookie 仅在有值时随请求发送（匿名可用）。"""
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cred = get_credentials("5sing") or {}
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return str(cred.get("cookie") or "")
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def get_status() -> dict[str, Any]:
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"""登录态（凭据存在性判断）。"""
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cred = get_credentials("5sing") or {}
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if cred.get("cookie"):
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return {"logged": True, "updatedAt": cred.get("updatedAt")}
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return {"logged": False}
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def is_foreign_source(song_info: dict[str, Any]) -> bool:
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"""是否显式声明了非本平台的 source（上游 GetLyrics/GetDownloadURL 的 source mismatch 检查）。"""
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source = song_info.get("source")
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return bool(source) and source != "5sing"
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async def fetch_5sing(url: str, *, headers: dict[str, str] | None = None, timeout_ms: int = 15_000) -> Any:
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"""带 Cookie/UA 的请求；httpFetch 不跟随 302，这里手动跟跳最多 3 次。
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5sing 老链接会 http→https / 数字 userId → 个性域名跳转，必须跟。
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"""
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cookie = get_5sing_cookie()
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all_headers = {"User-Agent": UserAgent}
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if cookie:
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all_headers["Cookie"] = cookie
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if headers:
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all_headers.update({str(key): str(value) for key, value in headers.items()})
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current = str(url)
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response = None
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for _hop in range(4):
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response = await http_fetch(current, headers=all_headers, timeout=timeout_ms)
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status = response.status_code or 0
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location = response.headers.get("location", "")
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if 300 <= status < 400 and location:
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from urllib.parse import urljoin
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try:
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current = urljoin(current, location)
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except ValueError:
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return response
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continue
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return response
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return response
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async def fetch_5sing_json(url: str, *, headers: dict[str, str] | None = None, timeout_ms: int = 15_000) -> Any:
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"""JSON 接口带退避重试（手机端 API 频率控制：code 13 / "操作太频繁"）。"""
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response = None
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for attempt in range(3):
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response = await fetch_5sing(url, headers=headers, timeout_ms=timeout_ms)
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body = response.body if isinstance(response.body, dict) else {}
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try:
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code = int(body.get("code") or 0)
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except (TypeError, ValueError):
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code = 0
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message = str(body.get("message") or "")
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if (code == 13 or "太频繁" in message) and attempt < 2:
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await asyncio.sleep(0.8 * (attempt + 1))
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continue
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return response
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return response
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def build_song_link(song_type: str, song_id: Any) -> str:
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"""歌曲页链接（上游 Link 拼法）。"""
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return f"http://5sing.kugou.com/{song_type}/{song_id}.html" if song_type and song_id else ""
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def build_playlist_link(user_id: Any, playlist_id: str) -> str:
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"""歌单页链接（上游 Link 拼法）。"""
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return f"http://5sing.kugou.com/{user_id}/dj/{playlist_id}.html" if user_id and playlist_id else ""
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def extract_song_id(songmid: Any, song_type_fallback: Any = None) -> dict[str, str]:
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"""解析歌曲的 ``<songid>|<songtype>`` 约定（兼容只给 songType 字段的调用）。"""
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raw = str(songmid if songmid is not None else "")
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parts = raw.split("|")
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id_part = parts[0] if parts else ""
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type_part = parts[1] if len(parts) > 1 else ""
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return {"songID": id_part or "", "songType": str(type_part or song_type_fallback or "")}
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def extract_song_link(link: Any) -> dict[str, str] | None:
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"""上游 Parse 的正则：5sing.kugou.com/(\\w+)/(\\d+).html（专辑/歌手页不匹配）。"""
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match = re.search(r"5sing\.kugou\.com/(\w+)/(\d+)\.html", str(link if link is not None else ""))
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if not match:
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return None
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return {"songType": match.group(1), "songID": match.group(2)}
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def extract_playlist_link(link: Any) -> dict[str, str] | None:
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"""歌单链接解析（放宽为任意单段 userId，含个性域名与省略 user 段）。"""
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match = re.search(
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r"5sing\.kugou\.com/(?:([^/?#]+)/)?dj/([a-zA-Z0-9]+)\.html", str(link if link is not None else "")
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)
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if not match:
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return None
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return {"userId": match.group(1) or "", "playlistId": match.group(2)}
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def estimate_duration(song_size: Any) -> int:
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"""上游 Search 的时长估算：songSize*8/320000（320kbps 假设；0 返回 0）。"""
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try:
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size = float(song_size or 0)
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except (TypeError, ValueError):
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size = 0.0
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return math.trunc((size * 8) / 320000) if size > 0 else 0
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def kind_name(song_type: str) -> str:
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"""作品类型中文名（typeName 缺失时兜底）。"""
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return SONG_KINDS.get(song_type, "")
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