632 lines
24 KiB
Python
632 lines
24 KiB
Python
# -*- coding: utf-8 -*-
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"""只读看板 HTTP 服务。
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只注册 GET（以及登录所需的 POST /login）。数据管理仍由 Telegram、CLI 或
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数据库完成，Web 不提供任何业务写接口。
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"""
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from __future__ import annotations
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import hashlib
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import hmac
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import json
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import mimetypes
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import time
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from dataclasses import dataclass
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from http import HTTPStatus
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from http.cookies import SimpleCookie
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from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
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from pathlib import Path
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from typing import Any, Callable, Mapping
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from urllib.parse import parse_qs, quote, unquote, urlsplit
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from ..analytics import is_loopback
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from ..config import ConfigStore
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from ..database import Database
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from .queries import DashboardQueries
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STATIC_ROOT = Path(__file__).resolve().parent / "static"
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COOKIE_NAME = "rb_session"
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SESSION_TTL = 7 * 86400
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PROTECTED_API = {"/api/candidates", "/api/system"}
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PROTECTED_PAGES = {"/candidates", "/system"}
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class ApiError(Exception):
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def __init__(self, status: int, code: str, message: str) -> None:
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super().__init__(message)
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self.status = status
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self.code = code
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self.message = message
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@dataclass
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class WebContext:
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queries: DashboardQueries
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config_store: ConfigStore
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preview: bool = False
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logger: Any = None
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clock: Callable[[], float] = time.time
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db_path: str | None = None
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schema_version: int | None = None
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@property
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def auth_token(self) -> str:
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return self.config_store.get().web.auth_token
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class DashboardHTTPServer(ThreadingHTTPServer):
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daemon_threads = True
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allow_reuse_address = True
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def __init__(self, address, context: WebContext) -> None:
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self.context = context
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super().__init__(address, DashboardHandler)
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class DashboardHandler(BaseHTTPRequestHandler):
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protocol_version = "HTTP/1.1"
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server_version = "ReactionBoard/0.1"
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# ------------------------------------------------------------ logging
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def log_message(self, fmt: str, *args: Any) -> None:
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# 请求级日志容易刷屏，只保留错误在 _send_error 里记录。
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return
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@property
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def context(self) -> WebContext:
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return self.server.context # type: ignore[attr-defined]
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# ------------------------------------------------------------ HTTP
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def do_GET(self) -> None:
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self._dispatch("GET")
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def do_HEAD(self) -> None:
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self._dispatch("HEAD")
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def do_POST(self) -> None:
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self._dispatch("POST")
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def do_PUT(self) -> None:
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self._method_not_allowed()
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def do_PATCH(self) -> None:
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self._method_not_allowed()
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def do_DELETE(self) -> None:
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self._method_not_allowed()
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def do_OPTIONS(self) -> None:
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self._method_not_allowed()
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def _method_not_allowed(self) -> None:
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self._send_error(HTTPStatus.METHOD_NOT_ALLOWED, "method_not_allowed", "不支持该操作")
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# ------------------------------------------------------------ dispatch
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def _dispatch(self, method: str) -> None:
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parsed = urlsplit(self.path)
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path = unquote(parsed.path)
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query = parse_qs(parsed.query, keep_blank_values=True)
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try:
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if path == "/api/health":
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self._send_json(HTTPStatus.OK, {
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"ok": True,
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"preview": self.context.preview,
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"time": int(self.context.clock()),
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})
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return
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if path == "/api/session":
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self._send_json(HTTPStatus.OK, {
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"auth_enabled": bool(self.context.auth_token),
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"authenticated": self._authorized(),
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"preview": self.context.preview,
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})
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return
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if path == "/login":
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if method == "POST":
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self._login_post(query)
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else:
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self._login_page(query)
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return
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if path == "/logout":
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self._logout()
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return
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if path.startswith("/api/"):
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if path in PROTECTED_API and not self._authorized():
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self._send_error(HTTPStatus.UNAUTHORIZED, "unauthorized", "需要登录")
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return
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if method == "POST":
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self._send_error(
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HTTPStatus.METHOD_NOT_ALLOWED,
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"method_not_allowed",
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"不支持该操作",
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)
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return
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self._api(path, query, method)
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return
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if path in PROTECTED_PAGES and not self._authorized():
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self._redirect(f"/login?next={quote(path)}")
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return
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self._static(path, method)
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except ApiError as exc:
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self._send_error(exc.status, exc.code, exc.message)
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except ValueError as exc:
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self._send_error(HTTPStatus.BAD_REQUEST, "bad_request", str(exc))
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except BrokenPipeError:
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return
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except Exception as exc: # noqa: BLE001
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if self.context.logger is not None:
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self.context.logger.error("web.error", path=path, error=str(exc))
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self._send_error(
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HTTPStatus.INTERNAL_SERVER_ERROR, "internal_error", "服务端错误"
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)
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# ------------------------------------------------------------ auth
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def _session_value(self, expires_at: int) -> str:
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token = self.context.auth_token
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payload = f"rb:{int(expires_at)}"
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signature = hmac.new(
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token.encode("utf-8"), payload.encode("utf-8"), hashlib.sha256
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).hexdigest()
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return f"{int(expires_at)}.{signature}"
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def _valid_session(self, value: str) -> bool:
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token = self.context.auth_token
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if not token or "." not in value:
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return False
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raw_exp, signature = value.split(".", 1)
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try:
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expires_at = int(raw_exp)
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except ValueError:
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return False
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if expires_at < int(self.context.clock()):
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return False
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payload = f"rb:{expires_at}"
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expected = hmac.new(
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token.encode("utf-8"), payload.encode("utf-8"), hashlib.sha256
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).hexdigest()
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return hmac.compare_digest(signature, expected)
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def _authorized(self) -> bool:
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token = self.context.auth_token
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if not token:
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return True
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header = self.headers.get("Authorization", "")
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if header.startswith("Bearer "):
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return hmac.compare_digest(header[7:].strip(), token)
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cookie_header = self.headers.get("Cookie")
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if not cookie_header:
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return False
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cookie = SimpleCookie()
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try:
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cookie.load(cookie_header)
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except Exception: # noqa: BLE001
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return False
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morsel = cookie.get(COOKIE_NAME)
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return morsel is not None and self._valid_session(morsel.value)
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def _login_page(self, query: Mapping[str, list[str]]) -> None:
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if not self.context.auth_token:
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self._redirect("/")
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return
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next_path = _safe_next(_param(query, "next", ""))
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html = """<!doctype html>
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<html lang="zh-CN"><head><meta charset="utf-8">
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<meta name="viewport" content="width=device-width,initial-scale=1">
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<link rel="icon" href="/static/favicon.svg" type="image/svg+xml">
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<title>登录 · Reaction 看板</title>
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<style>
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:root{color-scheme:light dark}body{margin:0;min-height:100vh;display:grid;
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place-items:center;font-family:system-ui,-apple-system,"Segoe UI",sans-serif;
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background:#f7f2ea;color:#2a201a}main{width:min(92vw,360px);padding:28px;
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border-radius:16px;background:#fffdf9;box-shadow:0 12px 40px rgba(42,32,26,.12)}
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h1{font-size:20px;margin:0 0 8px}p{color:#7b6a58;font-size:14px;margin:0 0 18px}
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input{width:100%;box-sizing:border-box;padding:12px 14px;border:1px solid #e6d8c4;
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border-radius:10px;font-size:16px}button{width:100%;margin-top:12px;padding:12px;
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border:0;border-radius:10px;background:#a9702f;color:#fff;font-size:16px;
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font-weight:600;cursor:pointer}@media(prefers-color-scheme:dark){body{background:#1b1411;
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color:#f3e9dc}main{background:#221a15}p{color:#c9b6a0}input{background:#1b1411;
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border-color:#3a2c22;color:#f3e9dc}button{background:#e9b97c;color:#2a1a10}}
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</style></head><body><main>
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<h1>Reaction 看板</h1><p>输入配置中的 web.auth_token 以继续。</p>
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<form method="post" action="/login">
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<input type="password" name="token" autocomplete="current-password" placeholder="访问令牌" required autofocus>
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<button type="submit">进入看板</button>
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</form></main></body></html>"""
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html = html.replace(
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'action="/login"', f'action="/login?next={quote(next_path)}"'
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)
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self._send_html(HTTPStatus.OK, html)
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def _login_post(self, query: Mapping[str, list[str]]) -> None:
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if not self.context.auth_token:
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self._redirect("/")
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return
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try:
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length = int(self.headers.get("Content-Length", "0"))
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except ValueError:
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length = 0
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if length <= 0 or length > 4096:
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self._send_error(HTTPStatus.BAD_REQUEST, "bad_request", "请求体过大")
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return
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body = self.rfile.read(length).decode("utf-8", errors="replace")
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token = (parse_qs(body).get("token") or [""])[0]
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if not hmac.compare_digest(token, self.context.auth_token):
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self._send_error(HTTPStatus.UNAUTHORIZED, "unauthorized", "令牌不正确")
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return
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expires_at = int(self.context.clock()) + SESSION_TTL
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value = self._session_value(expires_at)
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target = _safe_next(_param(query, "next", ""))
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self.send_response(HTTPStatus.SEE_OTHER)
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self.send_header("Location", target)
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self.send_header("Set-Cookie", (
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f"{COOKIE_NAME}={value}; Path=/; HttpOnly; SameSite=Lax; "
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f"Max-Age={SESSION_TTL}"
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))
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self.send_header("Content-Length", "0")
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self._security_headers()
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self.end_headers()
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def _logout(self) -> None:
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self.send_response(HTTPStatus.SEE_OTHER)
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self.send_header("Location", "/login" if self.context.auth_token else "/")
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self.send_header("Set-Cookie", f"{COOKIE_NAME}=; Path=/; Max-Age=0; HttpOnly; SameSite=Lax")
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self.send_header("Content-Length", "0")
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self._security_headers()
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self.end_headers()
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# ------------------------------------------------------------ API
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def _api(self, path: str, query: Mapping[str, list[str]], method: str) -> None:
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queries = self.context.queries
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if path == "/api/overview":
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self._send_json(HTTPStatus.OK, queries.overview())
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return
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if path == "/api/videos":
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self._send_json(HTTPStatus.OK, queries.list_videos(
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sort=_param(query, "sort", "heat"),
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within_days=_optional_int(query, "within_days"),
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year=_year_param(query),
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growth_days=_int_param(query, "growth_days", 7, 1, 365),
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folder_id=_optional_int(query, "folder"),
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q=_optional_str(query, "q"),
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page=_int_param(query, "page", 1, 1, 1_000_000),
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page_size=_int_param(
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query, "page_size",
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_optional_int(query, "limit") or 20,
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1, 200,
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),
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))
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return
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if path.startswith("/api/videos/"):
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parts = [part for part in path.split("/") if part]
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if len(parts) == 3:
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aid = _path_int(parts[2], "aid")
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data = queries.video_detail(aid)
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if data is None:
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "视频不存在")
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self._send_json(HTTPStatus.OK, data)
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return
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if len(parts) == 4 and parts[3] == "trend":
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aid = _path_int(parts[2], "aid")
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days = _range_days(query)
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self._send_json(HTTPStatus.OK, queries.video_trend(aid, days=days))
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return
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "接口不存在")
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if path == "/api/rankings":
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scope = _param(query, "scope", "video")
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if scope == "up":
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self._send_json(HTTPStatus.OK, queries.list_ups(
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sort=_param(query, "sort", "efficiency"),
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within_days=_optional_int(query, "within_days"),
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year=_year_param(query),
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q=_optional_str(query, "q"),
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min_videos=_int_param(query, "min_videos", 1, 1, 10000),
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page=_int_param(query, "page", 1, 1, 1_000_000),
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page_size=_int_param(
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query, "page_size",
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_optional_int(query, "limit") or 20,
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1, 200,
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),
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))
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return
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if scope != "video":
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raise ApiError(HTTPStatus.BAD_REQUEST, "bad_request", "scope 必须是 video 或 up")
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self._send_json(HTTPStatus.OK, queries.list_videos(
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sort=_param(query, "sort", "heat"),
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within_days=_optional_int(query, "within_days"),
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year=_year_param(query),
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growth_days=_int_param(query, "growth_days", 7, 1, 365),
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folder_id=_optional_int(query, "folder"),
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q=_optional_str(query, "q"),
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page=_int_param(query, "page", 1, 1, 1_000_000),
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page_size=_int_param(
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query, "page_size",
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_optional_int(query, "limit") or 20,
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1, 200,
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),
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))
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return
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if path == "/api/ups":
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self._send_json(HTTPStatus.OK, queries.list_ups(
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sort=_param(query, "sort", "efficiency"),
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within_days=_optional_int(query, "within_days"),
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year=_year_param(query),
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q=_optional_str(query, "q"),
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min_videos=_int_param(query, "min_videos", 1, 1, 10000),
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page=_int_param(query, "page", 1, 1, 1_000_000),
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page_size=_int_param(
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query, "page_size",
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_optional_int(query, "limit") or 20,
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1, 200,
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),
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))
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return
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if path.startswith("/api/ups/"):
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parts = [part for part in path.split("/") if part]
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if len(parts) != 3:
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "接口不存在")
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mid = _path_int(parts[2], "mid")
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data = queries.up_detail(mid)
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if data is None:
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "UP 不存在")
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self._send_json(HTTPStatus.OK, data)
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return
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if path == "/api/fans":
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self._send_json(HTTPStatus.OK, queries.fans(
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_optional_int(query, "mid"),
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days=_int_param(query, "days", 90, 1, 3650),
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start=_optional_str(query, "start"),
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end=_optional_str(query, "end"),
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recent_days=_int_param(query, "recent_days", 14, 1, 3650),
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))
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return
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if path == "/api/about":
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self._send_json(HTTPStatus.OK, queries.about())
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return
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if path == "/api/candidates":
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self._send_json(HTTPStatus.OK, queries.candidates())
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return
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if path == "/api/system":
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self._send_json(HTTPStatus.OK, queries.system())
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return
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "接口不存在")
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# ------------------------------------------------------------ static
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def _static(self, path: str, method: str) -> None:
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if path in {"/", "/index.html"}:
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target = STATIC_ROOT / "index.html"
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elif path.startswith("/static/"):
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relative = path[len("/static/"):]
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target = (STATIC_ROOT / relative).resolve()
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try:
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target.relative_to(STATIC_ROOT.resolve())
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except ValueError:
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "文件不存在")
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else:
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# 伪静态前端路由：/rank、/video/123、/up/123 等直接返回 index.html，
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# 由前端根据 location.pathname 渲染。带扩展名的路径仍按文件处理并返回 404。
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last_segment = path.rstrip("/").rsplit("/", 1)[-1]
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if "." in last_segment:
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "文件不存在")
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target = STATIC_ROOT / "index.html"
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if not target.is_file():
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raise ApiError(HTTPStatus.NOT_FOUND, "not_found", "页面不存在")
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content_type = mimetypes.guess_type(str(target))[0] or "application/octet-stream"
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if content_type.startswith("text/") or content_type in {
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"application/javascript", "application/json", "image/svg+xml",
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}:
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content_type += "; charset=utf-8"
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payload = target.read_bytes()
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vendor_root = (STATIC_ROOT / "vendor").resolve()
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try:
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target.relative_to(vendor_root)
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cache_control = "public, max-age=86400"
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except ValueError:
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# 应用自身的 JS/CSS/HTML 每次重新校验，保证升级后浏览器立刻拿到新版。
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cache_control = "no-cache"
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self.send_response(HTTPStatus.OK)
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self.send_header("Content-Type", content_type)
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self.send_header("Content-Length", str(len(payload)))
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self.send_header("Cache-Control", cache_control)
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self._security_headers()
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self.end_headers()
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if method != "HEAD":
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self.wfile.write(payload)
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# ------------------------------------------------------------ responses
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def _security_headers(self) -> None:
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self.send_header(
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"Content-Security-Policy",
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"default-src 'self'; img-src 'self' https: data:; "
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"style-src 'self' 'unsafe-inline'; script-src 'self'; "
|
||
"connect-src 'self'; base-uri 'none'; frame-ancestors 'none'",
|
||
)
|
||
self.send_header("X-Content-Type-Options", "nosniff")
|
||
self.send_header("Referrer-Policy", "no-referrer")
|
||
self.send_header("X-Frame-Options", "DENY")
|
||
|
||
def _send_json(self, status: int, data: Any) -> None:
|
||
payload = json.dumps({"ok": True, "data": data}, ensure_ascii=False).encode("utf-8")
|
||
self.send_response(int(status))
|
||
self.send_header("Content-Type", "application/json; charset=utf-8")
|
||
self.send_header("Content-Length", str(len(payload)))
|
||
self.send_header("Cache-Control", "no-store")
|
||
self._security_headers()
|
||
self.end_headers()
|
||
if self.command != "HEAD":
|
||
self.wfile.write(payload)
|
||
|
||
def _send_error(self, status: int, code: str, message: str) -> None:
|
||
payload = json.dumps(
|
||
{"ok": False, "error": {"code": code, "message": message}},
|
||
ensure_ascii=False,
|
||
).encode("utf-8")
|
||
self.send_response(int(status))
|
||
self.send_header("Content-Type", "application/json; charset=utf-8")
|
||
self.send_header("Content-Length", str(len(payload)))
|
||
self.send_header("Cache-Control", "no-store")
|
||
self._security_headers()
|
||
self.end_headers()
|
||
if self.command != "HEAD":
|
||
self.wfile.write(payload)
|
||
|
||
def _send_html(self, status: int, html: str) -> None:
|
||
payload = html.encode("utf-8")
|
||
self.send_response(int(status))
|
||
self.send_header("Content-Type", "text/html; charset=utf-8")
|
||
self.send_header("Content-Length", str(len(payload)))
|
||
self.send_header("Cache-Control", "no-store")
|
||
self._security_headers()
|
||
self.end_headers()
|
||
if self.command != "HEAD":
|
||
self.wfile.write(payload)
|
||
|
||
def _redirect(self, location: str) -> None:
|
||
self.send_response(HTTPStatus.SEE_OTHER)
|
||
self.send_header("Location", location)
|
||
self.send_header("Content-Length", "0")
|
||
self._security_headers()
|
||
self.end_headers()
|
||
|
||
|
||
# ------------------------------------------------------------ helpers
|
||
|
||
|
||
def _safe_next(value: str | None) -> str:
|
||
text = (value or "").strip()
|
||
if not text.startswith("/") or text.startswith("//") or text.startswith("/login"):
|
||
return "/"
|
||
return text
|
||
|
||
|
||
def _param(query: Mapping[str, list[str]], name: str, default: str) -> str:
|
||
values = query.get(name)
|
||
return default if not values else str(values[0])
|
||
|
||
|
||
def _optional_str(query: Mapping[str, list[str]], name: str) -> str | None:
|
||
value = _param(query, name, "").strip()
|
||
return value or None
|
||
|
||
|
||
def _optional_int(query: Mapping[str, list[str]], name: str) -> int | None:
|
||
value = _optional_str(query, name)
|
||
if value is None:
|
||
return None
|
||
try:
|
||
return int(value)
|
||
except ValueError as exc:
|
||
raise ApiError(HTTPStatus.BAD_REQUEST, "bad_request", f"{name} 必须是整数") from exc
|
||
|
||
|
||
def _year_param(query: Mapping[str, list[str]]) -> int | None:
|
||
value = _optional_int(query, "year")
|
||
if value is None:
|
||
return None
|
||
if value < 2000 or value > 2100:
|
||
raise ApiError(HTTPStatus.BAD_REQUEST, "bad_request", "year 必须在 2000~2100 之间")
|
||
return value
|
||
|
||
|
||
def _int_param(
|
||
query: Mapping[str, list[str]],
|
||
name: str,
|
||
default: int,
|
||
minimum: int,
|
||
maximum: int,
|
||
) -> int:
|
||
value = _optional_int(query, name)
|
||
if value is None:
|
||
return int(default)
|
||
if value < minimum or value > maximum:
|
||
raise ApiError(
|
||
HTTPStatus.BAD_REQUEST, "bad_request",
|
||
f"{name} 必须在 {minimum}~{maximum} 之间",
|
||
)
|
||
return value
|
||
|
||
|
||
def _path_int(value: str, name: str) -> int:
|
||
try:
|
||
return int(value)
|
||
except ValueError as exc:
|
||
raise ApiError(HTTPStatus.BAD_REQUEST, "bad_request", f"{name} 必须是整数") from exc
|
||
|
||
|
||
def _range_days(query: Mapping[str, list[str]]) -> int | None:
|
||
raw = _optional_str(query, "range")
|
||
if raw in {None, "all", "0"}:
|
||
return None
|
||
if raw in {"7", "30", "90"}:
|
||
return int(raw)
|
||
days = _optional_int(query, "days")
|
||
if days is None:
|
||
return 30
|
||
if days < 1 or days > 3650:
|
||
raise ApiError(HTTPStatus.BAD_REQUEST, "bad_request", "days 超出范围")
|
||
return days
|
||
|
||
|
||
def _preview_marker(db: Database) -> bool:
|
||
def run(conn):
|
||
row = conn.execute("SELECT v FROM kv WHERE k = 'preview:seeded'").fetchone()
|
||
return row is not None and str(row["v"]) == "1"
|
||
return bool(db.read(run))
|
||
|
||
|
||
def create_server(
|
||
config_store: ConfigStore,
|
||
db: Database,
|
||
*,
|
||
host: str | None = None,
|
||
port: int | None = None,
|
||
preview: bool = False,
|
||
logger: Any = None,
|
||
clock: Callable[[], float] = time.time,
|
||
) -> DashboardHTTPServer:
|
||
cfg = config_store.get()
|
||
bind_host = cfg.web.host if host is None else host
|
||
bind_port = cfg.web.port if port is None else int(port)
|
||
if not cfg.web.auth_token and not is_loopback(bind_host):
|
||
raise ValueError(
|
||
"非回环地址必须配置 web.auth_token，或只绑定 127.0.0.1"
|
||
)
|
||
if preview and not _preview_marker(db):
|
||
raise ValueError("目标数据库不是预览库（缺少 preview:seeded=1 标记）")
|
||
context = WebContext(
|
||
queries=DashboardQueries(db, config_store, clock=clock),
|
||
config_store=config_store,
|
||
preview=preview,
|
||
logger=logger,
|
||
clock=clock,
|
||
db_path=str(db.path),
|
||
schema_version=db.schema_version,
|
||
)
|
||
return DashboardHTTPServer((bind_host, bind_port), context)
|
||
|
||
|
||
def serve_forever(server: DashboardHTTPServer, *, logger: Any = None) -> None:
|
||
host, port = server.server_address[:2]
|
||
if logger is not None:
|
||
logger.info(
|
||
"web.start",
|
||
url=f"http://{host}:{port}",
|
||
preview=server.context.preview,
|
||
auth=bool(server.context.auth_token),
|
||
)
|
||
try:
|
||
server.serve_forever()
|
||
finally:
|
||
server.server_close()
|