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feat: tighten linux login flow and refresh lab entry

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Codex
2026-03-25 16:42:15 +08:00
parent 2f7bd50a36
commit efaa715e93
3 changed files with 260 additions and 2190 deletions
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2267
index.html
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48
login.html Normal file
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@@ -0,0 +1,48 @@
<!DOCTYPE html>
<html lang="zh-CN">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<title>Linux Login</title>
<style>
:root{--bg:#f4f8fc;--panel:#fff;--line:#d8e2ee;--text:#102033;--muted:#5d7187;--brand:#0f6db6;--soft:#e9f3ff}
[data-theme="dark"]{--bg:#08111d;--panel:#0c1826;--line:#1d3245;--text:#edf4fb;--muted:#9bb0c3;--brand:#67baff;--soft:rgba(103,186,255,.1)}
*{box-sizing:border-box} body{margin:0;min-height:100vh;display:grid;place-items:center;padding:20px;background:var(--bg);color:var(--text);font-family:"Segoe UI","Microsoft YaHei",sans-serif}
.card{width:min(100%,460px);background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:28px} .toolbar,.tips{display:flex;flex-wrap:wrap;gap:10px}.toolbar{justify-content:flex-end;margin-bottom:16px}
button,input{font:inherit}.btn,.ghost,.chip{border-radius:999px;padding:10px 14px;font-weight:700}.btn{border:0;background:linear-gradient(135deg,var(--brand),#37a1ff);color:#fff;cursor:pointer;width:100%}.ghost{border:1px solid var(--line);background:transparent;color:var(--text);cursor:pointer}.chip{display:inline-flex;background:var(--soft);color:var(--brand)}
form{display:grid;gap:12px;margin-top:16px} input{padding:12px;border:1px solid var(--line);border-radius:12px;background:transparent;color:var(--text)} .eyebrow{font-size:12px;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--brand)} h1,p{margin:0} p{color:var(--muted);line-height:1.8}.msg{margin-top:14px;padding:12px;border:1px solid var(--line);border-radius:12px;color:var(--muted);white-space:pre-wrap}
</style>
</head>
<body>
<section class="card">
<div class="toolbar">
<button class="ghost" id="themeBtn"></button>
<button class="ghost" id="langBtn"></button>
</div>
<div class="eyebrow" id="eyebrow"></div>
<h1 id="title" style="margin:10px 0 8px;"></h1>
<p id="desc"></p>
<form id="loginForm">
<input id="user" type="text" autocomplete="username" />
<input id="pass" type="password" autocomplete="current-password" />
<button class="btn" type="submit" id="submitBtn"></button>
</form>
<div class="tips" style="margin-top:14px;">
<span class="chip" id="accountTip"></span>
<span class="chip" id="passwordTip"></span>
</div>
<div class="msg" id="msg"></div>
</section>
<script>
const D=v=>{const e=document.createElement('textarea');e.innerHTML=v;return e.value};const $=id=>document.getElementById(id);
const LANG={zh:{eyebrow:'&#x5B89;&#x5168;&#x5165;&#x53E3;',title:'Linux &#x5B66;&#x4E60;&#x5B9E;&#x9A8C;&#x5BA4;&#x767B;&#x5F55;',desc:'&#x767B;&#x5F55;&#x540E;&#x624D;&#x80FD;&#x8BBF;&#x95EE;&#x8BFE;&#x7A0B;&#x603B;&#x89C8;&#x3001;&#x7EC3;&#x4E60;&#x7EC8;&#x7AEF;&#x548C;&#x5B66;&#x4E60;&#x9762;&#x677F;&#x3002;',user:'&#x7528;&#x6237;&#x540D;',pass:'&#x5BC6;&#x7801;',submit:'&#x767B;&#x5F55;&#x5E76;&#x8FDB;&#x5165;&#x5B66;&#x4E60;&#x53F0;',themeDark:'&#x6DF1;&#x8272;&#x6A21;&#x5F0F;',themeLight:'&#x6D45;&#x8272;&#x6A21;&#x5F0F;',lang:'EN',account:'&#x8D26;&#x53F7;&#xFF1A;&#x6309;&#x90E8;&#x7F72;&#x914D;&#x7F6E;',password:'&#x5BC6;&#x7801;&#xFF1A;&#x6309;&#x90E8;&#x7F72;&#x914D;&#x7F6E;',ready:'&#x8BF7;&#x8F93;&#x5165;&#x90E8;&#x7F72;&#x65F6;&#x914D;&#x7F6E;&#x7684;&#x8D26;&#x53F7;&#x5BC6;&#x7801;&#x8FDB;&#x5165; Linux &#x5B66;&#x4E60;&#x9879;&#x76EE;&#x3002;',loading:'&#x6B63;&#x5728;&#x767B;&#x5F55;...',failed:'&#x767B;&#x5F55;&#x5931;&#x8D25;&#xFF0C;&#x8BF7;&#x68C0;&#x67E5;&#x8D26;&#x53F7;&#x4E0E;&#x5BC6;&#x7801;&#x3002;'},en:{eyebrow:'Secure entry',title:'Linux Learning Lab Login',desc:'Sign in before opening the course overview, practice terminal, and learning dashboard.',user:'Username',pass:'Password',submit:'Sign in and enter lab',themeDark:'Dark mode',themeLight:'Light mode',lang:'涓枃',account:'Account: deployment configured',password:'Password: deployment configured',ready:'Enter the deployment-configured credentials to access the Linux learning project.',loading:'Signing in...',failed:'Login failed. Check the username and password.'}};
const state={language:localStorage.getItem('linux_lab_language')||'zh',theme:localStorage.getItem('linux_lab_theme')||'light'};const t=()=>LANG[state.language];const tx=k=>D(t()[k]||'');
function setTheme(theme,persist=true){state.theme=theme==='dark'?'dark':'light';document.documentElement.setAttribute('data-theme',state.theme);if(persist)localStorage.setItem('linux_lab_theme',state.theme);$('themeBtn').textContent=state.theme==='light'?tx('themeDark'):tx('themeLight')}
function render(){document.title=tx('title');document.documentElement.lang=state.language==='zh'?'zh-CN':'en';$('eyebrow').textContent=tx('eyebrow');$('title').textContent=tx('title');$('desc').textContent=tx('desc');$('user').placeholder=tx('user');$('pass').placeholder=tx('pass');$('submitBtn').textContent=tx('submit');$('langBtn').textContent=state.language==='zh'?'EN':'\u4E2D\u6587';$('accountTip').textContent=tx('account');$('passwordTip').textContent=tx('password');setTheme(state.theme,false);const n=localStorage.getItem('linux_lab_login_notice');$('msg').textContent=n||tx('ready');localStorage.removeItem('linux_lab_login_notice')}
async function checkSession(){const r=await fetch('/api/session',{credentials:'same-origin'});const p=await r.json();if(p.authenticated)location.href='/app'}
async function login(e){e.preventDefault();$('msg').textContent=tx('loading');const r=await fetch('/api/login',{method:'POST',credentials:'same-origin',headers:{'Content-Type':'application/json'},body:JSON.stringify({username:$('user').value.trim(),password:$('pass').value.trim()})});const p=await r.json();if(r.ok&&p.success){location.href='/app';return}$('msg').textContent=p.error||tx('failed')}
document.addEventListener('DOMContentLoaded',async()=>{render();await checkSession();$('themeBtn').addEventListener('click',()=>setTheme(state.theme==='light'?'dark':'light'));$('langBtn').addEventListener('click',()=>{state.language=state.language==='zh'?'en':'zh';localStorage.setItem('linux_lab_language',state.language);render()});$('loginForm').addEventListener('submit',login)})
</script>
</body>
</html>

135
server.py
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@@ -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":