feat: Sprint 19 — password auth, security headers, login page
Auth system (off by default, zero friction for localhost): - New api/auth.py module: password hashing (SHA-256 + STATE_DIR salt), signed HMAC session cookies (24h TTL), auth middleware - Enable via HERMES_WEBUI_PASSWORD env var or Settings panel - Minimal dark-themed login page at /login (self-contained HTML) - POST /api/auth/login, /api/auth/logout, GET /api/auth/status - Settings panel: "Access Password" field + "Sign Out" button - password_hash added to settings.json (null = auth disabled) Security hardening: - Security headers on all responses: X-Content-Type-Options: nosniff, X-Frame-Options: DENY, Referrer-Policy: same-origin - POST body size limit: 20MB cap in read_body() to prevent DoS Closes #23. 9 new tests. Total: 304 passed, 0 regressions. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
Nathan Esquenazi
@@ -52,6 +52,58 @@ except ImportError:
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_permanent_approved = set()
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# ── Login page (self-contained, no external deps) ────────────────────────────
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_LOGIN_PAGE_HTML = '''<!doctype html>
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<html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1">
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<title>Hermes — Sign in</title>
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<style>
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*{box-sizing:border-box;margin:0;padding:0}
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body{background:#1a1a2e;color:#e8e8f0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
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height:100vh;display:flex;align-items:center;justify-content:center}
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.card{background:#16213e;border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:36px 32px;
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width:320px;text-align:center;box-shadow:0 8px 32px rgba(0,0,0,.3)}
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.logo{width:48px;height:48px;border-radius:12px;background:linear-gradient(145deg,#e8a030,#e94560);
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display:flex;align-items:center;justify-content:center;font-weight:800;font-size:20px;color:#fff;
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margin:0 auto 12px;box-shadow:0 2px 12px rgba(233,69,96,.3)}
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h1{font-size:18px;font-weight:600;margin-bottom:4px}
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.sub{font-size:12px;color:#8888aa;margin-bottom:24px}
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input{width:100%;padding:10px 14px;border-radius:10px;border:1px solid rgba(255,255,255,.1);
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background:rgba(255,255,255,.04);color:#e8e8f0;font-size:14px;outline:none;margin-bottom:14px;
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transition:border-color .15s}
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input:focus{border-color:rgba(124,185,255,.5);box-shadow:0 0 0 3px rgba(124,185,255,.1)}
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button{width:100%;padding:10px;border-radius:10px;border:none;background:rgba(124,185,255,.15);
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border:1px solid rgba(124,185,255,.3);color:#7cb9ff;font-size:14px;font-weight:600;cursor:pointer;
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transition:all .15s}
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button:hover{background:rgba(124,185,255,.25)}
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.err{color:#e94560;font-size:12px;margin-top:10px;display:none}
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</style></head><body>
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<div class="card">
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<div class="logo">H</div>
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<h1>Hermes</h1>
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<p class="sub">Enter your password to continue</p>
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<form onsubmit="return doLogin(event)">
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<input type="password" id="pw" placeholder="Password" autofocus>
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<button type="submit">Sign in</button>
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</form>
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<div class="err" id="err"></div>
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</div>
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<script>
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async function doLogin(e){
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e.preventDefault();
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const pw=document.getElementById('pw').value;
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const err=document.getElementById('err');
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err.style.display='none';
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try{
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const res=await fetch('/api/auth/login',{method:'POST',
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headers:{'Content-Type':'application/json'},
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body:JSON.stringify({password:pw}),credentials:'include'});
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const data=await res.json();
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if(res.ok&&data.ok){window.location.href='/';}
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else{err.textContent=data.error||'Invalid password';err.style.display='block';}
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}catch(ex){err.textContent='Connection failed';err.style.display='block';}
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}
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</script></body></html>'''
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# ── GET routes ────────────────────────────────────────────────────────────────
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def handle_get(handler, parsed):
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@@ -61,6 +113,17 @@ def handle_get(handler, parsed):
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return t(handler, _INDEX_HTML_PATH.read_text(encoding='utf-8'),
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content_type='text/html; charset=utf-8')
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if parsed.path == '/login':
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return t(handler, _LOGIN_PAGE_HTML, content_type='text/html; charset=utf-8')
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if parsed.path == '/api/auth/status':
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from api.auth import is_auth_enabled, parse_cookie, verify_session
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logged_in = False
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if is_auth_enabled():
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cv = parse_cookie(handler)
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logged_in = bool(cv and verify_session(cv))
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return j(handler, {'auth_enabled': is_auth_enabled(), 'logged_in': logged_in})
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if parsed.path == '/favicon.ico':
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handler.send_response(204); handler.end_headers(); return True
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@@ -400,6 +463,36 @@ def handle_post(handler, parsed):
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if parsed.path == '/api/session/import':
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return _handle_session_import(handler, body)
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# ── Auth endpoints (POST) ──
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if parsed.path == '/api/auth/login':
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from api.auth import verify_password, create_session, set_auth_cookie, is_auth_enabled
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if not is_auth_enabled():
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return j(handler, {'ok': True, 'message': 'Auth not enabled'})
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password = body.get('password', '')
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if not verify_password(password):
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return bad(handler, 'Invalid password', 401)
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cookie_val = create_session()
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handler.send_response(200)
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handler.send_header('Content-Type', 'application/json')
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handler.send_header('Cache-Control', 'no-store')
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set_auth_cookie(handler, cookie_val)
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handler.end_headers()
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handler.wfile.write(json.dumps({'ok': True}).encode())
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return True
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if parsed.path == '/api/auth/logout':
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from api.auth import clear_auth_cookie, invalidate_session, parse_cookie
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cookie_val = parse_cookie(handler)
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if cookie_val:
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invalidate_session(cookie_val)
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handler.send_response(200)
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handler.send_header('Content-Type', 'application/json')
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handler.send_header('Cache-Control', 'no-store')
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clear_auth_cookie(handler)
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handler.end_headers()
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handler.wfile.write(json.dumps({'ok': True}).encode())
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return True
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return False # 404
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