diff --git a/index.html b/index.html index 218c753..646648a 100644 --- a/index.html +++ b/index.html @@ -1,2200 +1,127 @@ - + Linux Learning Lab -
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Linux Ops Learning Lab
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Linux Learning Lab

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Search Linux lessons, practice commands in a sandbox, and build better troubleshooting habits.

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请先登录

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登录后解锁课程总览、阶段地图、命令分类和练习仪表盘。

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将自动保存进度与阶段状态，方便继续学习。

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+ diff --git a/login.html b/login.html new file mode 100644 index 0000000..6361937 --- /dev/null +++ b/login.html @@ -0,0 +1,48 @@ + + + + + + Linux Login + + + +
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+ + + + diff --git a/server.py b/server.py index ad87c26..1ba3ac4 100755 --- a/server.py +++ b/server.py @@ -8,31 +8,40 @@ import http.server import json import os import re +import secrets +import time import urllib.parse from typing import Any from sandbox import LinuxSandbox +DEFAULT_USERNAME = os.environ.get("LINUX_LAB_USERNAME", "admin") +DEFAULT_PASSWORD = os.environ.get("LINUX_LAB_PASSWORD", "safe_linux_2026") USERS = { - "admin": hashlib.sha256(b"safe_linux_2026").hexdigest(), + DEFAULT_USERNAME: hashlib.sha256(DEFAULT_PASSWORD.encode("utf-8")).hexdigest(), } TASKS_FILE = os.path.join(os.path.dirname(__file__), "COURSE_TASKS.json") HTML_FILE = os.path.join(os.path.dirname(__file__), "index.html") +LOGIN_FILE = os.path.join(os.path.dirname(__file__), "login.html") PRIVACY_FILE = os.path.join(os.path.dirname(__file__), "privacy.html") SANDBOX = LinuxSandbox() +SESSION_COOKIE = "linux_lab_session" +SESSION_TTL_SECONDS = 8 * 60 * 60 +SESSIONS: dict[str, dict[str, Any]] = {} PUBLIC_GET_PATHS = { "/", + "/login.html", "/privacy", "/privacy.html", "/api/health", + "/api/session", } PUBLIC_POST_PATHS = { "/api/login", "/api/logout", } -SAFE_REMOTE_HOST = "xiaoxiaoluohao.indevs.in" def load_course() -> dict[str, Any]: @@ -47,6 +56,37 @@ def load_course() -> dict[str, Any]: COURSE = load_course() +def secure_cookie_enabled() -> bool: + return os.environ.get("LINUX_LAB_SECURE_COOKIE", "").lower() in {"1", "true", "yes", "on"} + + +def create_session(username: str) -> str: + session_id = secrets.token_urlsafe(24) + SESSIONS[session_id] = { + "user": username, + "expires_at": time.time() + SESSION_TTL_SECONDS, + } + return session_id + + +def get_session(session_id: str) -> dict[str, Any] | None: + if not session_id: + return None + session = SESSIONS.get(session_id) + if not session: + return None + if session.get("expires_at", 0) <= time.time(): + SESSIONS.pop(session_id, None) + return None + session["expires_at"] = time.time() + SESSION_TTL_SECONDS + return session + + +def delete_session(session_id: str): + if session_id: + SESSIONS.pop(session_id, None) + + def looks_garbled(value: Any) -> bool: if not isinstance(value, str) or not value.strip(): return False @@ -980,11 +1020,13 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): def log_message(self, format, *args): pass - def send_json(self, data: Any, status: int = 200): + def send_json(self, data: Any, status: int = 200, extra_headers: dict[str, str] | None = None): raw = json.dumps(data, ensure_ascii=False).encode("utf-8") self.send_response(status) self.send_header("Content-Type", "application/json; charset=utf-8") self.send_header("Content-Length", str(len(raw))) + for header, value in (extra_headers or {}).items(): + self.send_header(header, value) self.end_headers() self.wfile.write(raw) @@ -997,6 +1039,36 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): self.end_headers() self.wfile.write(body) + def send_redirect(self, location: str): + self.send_response(302) + self.send_header("Location", location) + self.end_headers() + + def cookie_header(self, session_id: str = "", clear: bool = False) -> str: + base = f"{SESSION_COOKIE}={session_id if not clear else ''}; Path=/; HttpOnly; SameSite=Lax" + if clear: + return base + "; Max-Age=0" + if secure_cookie_enabled(): + base += "; Secure" + return base + f"; Max-Age={SESSION_TTL_SECONDS}" + + def current_session_id(self) -> str: + cookie = self.headers.get("Cookie", "") + for part in cookie.split(";"): + name, _, value = part.strip().partition("=") + if name == SESSION_COOKIE: + return value.strip() + return "" + + def current_session(self) -> dict[str, Any] | None: + return get_session(self.current_session_id()) + + def current_user(self) -> str | None: + session = self.current_session() + if not session: + return None + return str(session.get("user") or "") + def is_public_path(self, path: str, method: str) -> bool: if method == "GET": return path in PUBLIC_GET_PATHS @@ -1004,19 +1076,10 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): return path in PUBLIC_POST_PATHS return False - def check_auth(self, auth_header: str, token: str) -> bool: - if token == "safe_linux_2026": - return True - if auth_header.startswith("Bearer ") and auth_header[7:] == "safe_linux_2026": - return True - return False - def require_auth_if_needed(self, path: str, method: str) -> bool: if self.is_public_path(path, method): return True - auth_header = self.headers.get("Authorization", "") - token = self.headers.get("X-Token", "") - if not self.check_auth(auth_header, token): + if not self.current_session(): self.send_json({"error": "Authentication required"}, 401) return False return True @@ -1025,10 +1088,21 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): parsed = urllib.parse.urlparse(self.path) path = parsed.path - if not self.require_auth_if_needed(path, "GET"): + if path == "/": + self.send_redirect("/app" if self.current_session() else "/login.html") return - if path == "/": + if path == "/login.html": + if self.current_session(): + self.send_redirect("/app") + return + self.send_file(LOGIN_FILE, "text/html; charset=utf-8") + return + + if path in {"/app", "/index.html"}: + if not self.current_session(): + self.send_redirect("/login.html") + return self.send_file(HTML_FILE, "text/html; charset=utf-8") return @@ -1036,6 +1110,9 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): self.send_file(PRIVACY_FILE, "text/html; charset=utf-8") return + if not self.require_auth_if_needed(path, "GET"): + return + if path == "/api/health": overview = build_overview() self.send_json( @@ -1051,6 +1128,11 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): ) return + if path == "/api/session": + user = self.current_user() + self.send_json({"authenticated": bool(user), "user": user or ""}) + return + if path == "/api/course": self.send_json(COURSE) return @@ -1130,9 +1212,6 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): parsed = urllib.parse.urlparse(self.path) path = parsed.path - if not self.require_auth_if_needed(path, "POST"): - return - content_length = int(self.headers.get("Content-Length", 0)) raw = self.rfile.read(content_length).decode("utf-8") if content_length else "{}" @@ -1146,14 +1225,30 @@ class LinuxLearningHandler(http.server.BaseHTTPRequestHandler): username = data.get("username", "") password = data.get("password", "") if username in USERS and hashlib.sha256(password.encode("utf-8")).hexdigest() == USERS[username]: - self.send_json({"success": True, "token": "safe_linux_2026", "message": "Login succeeded"}) + session_id = create_session(username) + self.send_json( + { + "success": True, + "user": username, + "message": "Login succeeded", + "expires_in": SESSION_TTL_SECONDS, + }, + extra_headers={"Set-Cookie": self.cookie_header(session_id)}, + ) return self.send_json({"success": False, "error": "Invalid username or password"}, 401) return + if not self.require_auth_if_needed(path, "POST"): + return + if path == "/api/logout": - self.send_json({"success": True, "message": "Logged out"}) + delete_session(self.current_session_id()) + self.send_json( + {"success": True, "message": "Logged out"}, + extra_headers={"Set-Cookie": self.cookie_header(clear=True)}, + ) return if path == "/api/reset":