screentinker/frontend/js/views/login.js
ScreenTinker 85febe05c0 Fix a login-page dead end, an enumeration oracle, and three boot/limiter defects
From the regression sweep. The first is a genuine regression against main.

A RATE-LIMITED DISCOVERY PERMANENTLY DEAD-ENDED THE LOGIN PAGE

lookupOrgSso checked that a body PARSED, not that the request succeeded — and a 429
body is valid JSON. So `data.sso` came back undefined, the single sign-on button was
hidden, the password box restored, and the domain recorded as answered: permanently,
for the life of the page. On an SSO-only domain that is the worst outcome available —
the password box then returns 403 and the button the user is told to use is not on the
screen. Discover is 10/min per IP and one person filling in the form costs up to four
calls, so a few colleagues behind one office address is enough. The comment above that
code already claimed to prevent exactly this; it only ever covered the 5xx case.

THE SSO-ONLY REFUSAL WAS AN ACCOUNT-EXISTENCE ORACLE

403 for an address that exists, 401 for one that does not — from an endpoint whose own
lockout returns 401 specifically to avoid that. The DOMAIN check now runs BEFORE the
account lookup, so both answer identically; whether a domain uses single sign-on is
already public through /sso/discover, so it reveals nothing new. The membership-level
refusal is deliberately downgraded to the generic 401, because a distinct answer there
would put the oracle back for exactly the accounts worth enumerating.

Verified: existing and invented addresses at an SSO-only domain both 403; and on an
instance with NO SSO configured, register/login/wrong-password/unknown-address are
201/200/401/401 — the hoisted check does not touch them.

BOOT PREFLIGHT

  - a cold install ran `npm ci --omit=dev` unconditionally, so a first start on a
    developer machine left `npm test` broken: same class of surprise as the prune this
    file already warns about, through the other branch of the same if. Now production-
    only.
  - two servers starting together: the loser died with ENOTEMPTY even though the tree
    was complete by then. It re-checks before failing.
  - the opt-out accepted only '1', unlike every other boolean the server takes.

THE LIMITER FOLD, DONE PROPERLY

Unmatched paths under /api/organizations still minted a bucket each. My first fix was a
catch-all regex — which put every unknown path in ONE bucket WITH the real endpoints,
so flooding nonsense URLs exhausted the limit for /sso-only. That trades a bypass for a
denial of service. Folding is now by explicit shape: known endpoints keep their own
keys, everything else shares a bucket kept apart from all of them.

Verified: 120 unmatched paths give 60/60 (bypass closed), and after that flood
/sso-only, /sso and /sso/:id/test all still answer 401 rather than 429 (no starvation),
while 70 hits on one real endpoint do trip its own limit. The login trailing-slash
bypass stays closed.

1609 tests, three clean runs.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Bvjey4FNam49MN7ybjcq6A
2026-08-11 10:22:25 -05:00

687 lines
35 KiB
JavaScript

import { showToast } from '../components/toast.js';
import { t } from '../i18n.js';
import { esc } from '../utils.js';
/*
* A recognisable mark for the providers people expect to see, and an honest generic one for
* everything else. Inline SVG rather than a remote image: an <img> to a provider CDN would put a
* third-party origin back into the CSP, which is precisely what moving the flow server-side removed.
*/
const PROVIDER_ICONS = {
google: `<svg width="18" height="18" viewBox="0 0 24 24" aria-hidden="true">
<path d="M22.56 12.25c0-.78-.07-1.53-.2-2.25H12v4.26h5.92a5.06 5.06 0 0 1-2.2 3.32v2.77h3.57c2.08-1.92 3.28-4.74 3.28-8.1z" fill="#4285F4"/>
<path d="M12 23c2.97 0 5.46-.98 7.28-2.66l-3.57-2.77c-.98.66-2.23 1.06-3.71 1.06-2.86 0-5.29-1.93-6.16-4.53H2.18v2.84C3.99 20.53 7.7 23 12 23z" fill="#34A853"/>
<path d="M5.84 14.09c-.22-.66-.35-1.36-.35-2.09s.13-1.43.35-2.09V7.07H2.18C1.43 8.55 1 10.22 1 12s.43 3.45 1.18 4.93l2.85-2.22.81-.62z" fill="#FBBC05"/>
<path d="M12 5.38c1.62 0 3.06.56 4.21 1.64l3.15-3.15C17.45 2.09 14.97 1 12 1 7.7 1 3.99 3.47 2.18 7.07l3.66 2.84c.87-2.6 3.3-4.53 6.16-4.53z" fill="#EA4335"/>
</svg>`,
microsoft: `<svg width="18" height="18" viewBox="0 0 21 21" aria-hidden="true">
<rect x="1" y="1" width="9" height="9" fill="#f25022"/>
<rect x="11" y="1" width="9" height="9" fill="#7fba00"/>
<rect x="1" y="11" width="9" height="9" fill="#00a4ef"/>
<rect x="11" y="11" width="9" height="9" fill="#ffb900"/>
</svg>`,
};
const GENERIC_ICON = `<svg width="18" height="18" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" aria-hidden="true">
<rect x="3" y="11" width="18" height="11" rx="2"/><path d="M7 11V7a5 5 0 0 1 10 0v4"/>
</svg>`;
const providerIcon = (slug) => PROVIDER_ICONS[slug] || GENERIC_ICON;
let authConfig = null;
async function loadAuthConfig() {
if (authConfig) return authConfig;
const res = await fetch('/api/auth/config');
authConfig = await res.json();
return authConfig;
}
// #15: resolve instance/default branding for the (pre-login) login page.
// Public endpoint: custom-domain match -> platform default -> ScreenTinker.
async function loadLoginBranding() {
try {
const res = await fetch('/api/branding?domain=' + encodeURIComponent(location.hostname));
if (!res.ok) return {};
return await res.json();
} catch { return {}; }
}
function brandEsc(s) {
return String(s ?? '').replace(/[&<>"']/g, c => ({ '&':'&amp;','<':'&lt;','>':'&gt;','"':'&quot;',"'":'&#39;' }[c]));
}
// Apply document-level branding (colors, favicon, title, custom CSS) for login.
function applyLoginBrandingDoc(b) {
const root = document.documentElement;
if (b.primary_color) root.style.setProperty('--accent', b.primary_color);
if (b.bg_color) root.style.setProperty('--bg-primary', b.bg_color);
if (b.brand_name) document.title = b.brand_name;
if (b.favicon_url) {
document.querySelectorAll('link[rel="icon"], link[rel="apple-touch-icon"]').forEach(l => l.setAttribute('href', b.favicon_url));
}
if (b.custom_css) {
let style = document.getElementById('wl-custom-css');
if (!style) { style = document.createElement('style'); style.id = 'wl-custom-css'; document.head.appendChild(style); }
style.textContent = b.custom_css;
}
}
export async function render(container) {
const [config, branding] = await Promise.all([loadAuthConfig(), loadLoginBranding()]);
const isSetup = config.needsSetup;
// registration_enabled may be absent on older servers — treat as enabled for back-compat
const canRegister = config.registration_enabled !== false;
applyLoginBrandingDoc(branding);
const brandName = branding.brand_name || 'ScreenTinker';
// Branded logo if set, else the default ScreenTinker glyph.
const logoHtml = branding.logo_url
? `<img src="${brandEsc(branding.logo_url)}" alt="${brandEsc(brandName)}" style="max-height:48px;max-width:200px;margin:0 auto 12px;display:block">`
: `<svg width="48" height="48" viewBox="0 0 24 24" fill="none" stroke="var(--accent)" stroke-width="2" style="margin:0 auto 12px">
<rect x="2" y="3" width="20" height="14" rx="2" ry="2"/>
<line x1="8" y1="21" x2="16" y2="21"/>
<line x1="12" y1="17" x2="12" y2="21"/>
</svg>`;
container.innerHTML = `
<div style="display:flex;align-items:center;justify-content:center;min-height:100vh;padding:16px">
<div style="width:400px;max-width:100%">
<div style="text-align:center;margin-bottom:32px">
${logoHtml}
<h1 style="font-size:24px;font-weight:700;color:var(--accent)">${brandEsc(brandName)}</h1>
<p style="color:var(--text-secondary);font-size:13px;margin-top:4px">
${isSetup ? t('auth.subtitle_setup') : t('auth.subtitle_signin')}
</p>
${!isSetup && canRegister ? `<p style="color:var(--warning);font-size:12px;margin-top:8px">${t('auth.trial_notice')}</p>` : ''}
</div>
<div style="background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius-lg);padding:24px">
<!-- Local Auth Form -->
<div id="localAuthForm">
<div class="form-group">
<label>${t('auth.email')}</label>
<input type="email" id="loginEmail" class="input" placeholder="${t('auth.placeholder_email')}" autocomplete="email">
</div>
<div class="form-group">
<label id="loginPasswordLabel" for="loginPassword">${t('auth.password')}</label>
<input type="password" id="loginPassword" class="input" placeholder="${t('auth.placeholder_password')}" autocomplete="current-password">
<!-- Filled in only when the typed email belongs to an organization that has configured
its own identity provider. A customer's IdP is never listed to everyone: the button
appears for the people it belongs to and nobody else, which also keeps the customer
list off the login page.
⚠️ BELOW the input, inside the same group. Above it, the button sat between the
"Password" label and its field — so the label described the SSO button and the
password box had none at all. It has to stay INSIDE the group, because hiding the
group is how the password is hidden and the button must survive that... which is
exactly why setPasswordVisible() hides the FIELD, never the container. -->
<div id="orgSsoSlot" style="display:none;margin-top:12px"></div>
</div>
${isSetup ? `
<div class="form-group">
<label>${t('auth.name')}</label>
<input type="text" id="loginName" class="input" placeholder="${t('auth.placeholder_name')}">
</div>
` : ''}
<button class="btn btn-primary" id="loginBtn" style="width:100%;justify-content:center;padding:10px">
${isSetup ? t('auth.create_admin_account') : t('auth.sign_in')}
</button>
${!isSetup ? `
<p style="text-align:center;margin-top:10px">
<a href="#" id="forgotLink" style="color:var(--text-secondary);font-size:12px;text-decoration:none">${t('auth.forgot_password')}</a>
</p>
` : ''}
${!isSetup && canRegister ? `
<button class="btn btn-secondary" id="showRegisterBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">
${t('auth.create_account')}
</button>
` : ''}
</div>
<!-- Register form (hidden by default) -->
<div id="registerForm" style="display:none">
<div class="form-group">
<label>${t('auth.name')}</label>
<input type="text" id="regName" class="input" placeholder="${t('auth.placeholder_name')}">
</div>
<div class="form-group">
<label>${t('auth.email')}</label>
<input type="email" id="regEmail" class="input" placeholder="${t('auth.placeholder_email')}">
</div>
<div class="form-group">
<label>${t('auth.password')}</label>
<input type="password" id="regPassword" class="input" placeholder="${t('auth.placeholder_register_password')}">
</div>
<button class="btn btn-primary" id="registerBtn" style="width:100%;justify-content:center;padding:10px">
${t('auth.create_account')}
</button>
<button class="btn btn-secondary" id="showLoginBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">
${t('auth.back_to_signin')}
</button>
</div>
<!-- TOTP 2FA challenge (hidden until /login returns mfa_required) -->
<div id="mfaForm" style="display:none">
<h2 style="font-size:16px;font-weight:600;margin-bottom:6px">${t('auth.mfa_title')}</h2>
<p style="color:var(--text-secondary);font-size:13px;margin-bottom:14px">${t('auth.mfa_prompt')}</p>
<div class="form-group">
<label>${t('auth.mfa_code_label')}</label>
<input type="text" id="mfaCode" class="input" autocomplete="one-time-code" autocapitalize="characters" spellcheck="false"
placeholder="123456" maxlength="12" style="letter-spacing:6px;text-align:center;font-family:monospace;font-size:18px">
</div>
<button class="btn btn-primary" id="mfaVerifyBtn" style="width:100%;justify-content:center;padding:10px">${t('auth.mfa_verify')}</button>
<button class="btn btn-secondary" id="mfaBackBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">${t('auth.back_to_signin')}</button>
<p style="color:var(--text-muted);font-size:11px;text-align:center;margin-top:12px">${t('auth.mfa_recovery_hint')}</p>
</div>
<!-- Email-verification notice (hidden until a verification_required response) -->
<div id="verifyNotice" style="display:none;text-align:center">
<div style="font-size:42px;line-height:1;margin-bottom:10px">✉️</div>
<h2 style="font-size:18px;font-weight:600;margin-bottom:8px">${t('auth.verify_title')}</h2>
<p style="color:var(--text-secondary);font-size:13px;margin-bottom:6px">${t('auth.verify_body')}</p>
<p style="font-weight:600;font-size:14px;margin-bottom:16px"><span id="verifyEmail"></span></p>
<button class="btn btn-secondary" id="verifyResendBtn" style="width:100%;justify-content:center;padding:10px">${t('auth.verify_resend')}</button>
<button class="btn btn-secondary" id="verifyBackBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">${t('auth.back_to_signin')}</button>
</div>
<div id="ssoBlock">
${(config.providers || []).length ? `
<div id="ssoDivider" style="display:flex;align-items:center;gap:12px;margin:20px 0">
<hr style="flex:1;border-color:var(--border)">
<span style="color:var(--text-muted);font-size:12px">${t('auth.divider_or')}</span>
<hr style="flex:1;border-color:var(--border)">
</div>
` : ''}
<!-- One button per configured provider, and each is a plain LINK to a server endpoint.
There is no provider SDK on this page: the browser never speaks to the identity
provider directly, so nothing here needs a client id and the CSP needs no
third-party script origin. Google and Microsoft are ordinary entries in this list.
The icon is chosen by slug where we have one and falls back to a generic mark, so a
self-hoster's Keycloak or Authentik still gets a real-looking button. -->
<!-- Wrapped so the whole set can be hidden at once: an organization that REQUIRES its own
identity provider must not be shown the operator's, which are not domain-confined. -->
<div id="instanceProviders">
${(config.providers || []).map((p) => `
<a class="btn btn-secondary" href="/api/auth/oidc/${encodeURIComponent(p.slug)}/start"
id="sso-${esc(p.slug)}"
style="width:100%;justify-content:center;padding:10px;gap:8px;margin-top:8px;text-decoration:none">
${providerIcon(p.slug)}
${esc(t('auth.signin_with', { provider: p.name }))}
</a>
`).join('')}
</div>
</div>
</div>
<!-- Support Access (collapsible) -->
<details id="supportDetails" style="margin-top:16px">
<summary style="font-size:11px;color:var(--text-muted);cursor:pointer;text-align:center">${t('auth.support_access')}</summary>
<div style="margin-top:8px">
<input type="text" id="supportToken" class="input" placeholder="${t('auth.support_token_placeholder')}" style="font-family:monospace">
<button class="btn btn-secondary" id="supportLoginBtn" style="width:100%;justify-content:center;padding:8px;margin-top:6px;font-size:12px">${t('auth.support_authenticate')}</button>
</div>
</details>
<div id="forgotForm" style="display:none">
<div class="form-group">
<label>${t('auth.email')}</label>
<input type="email" id="forgotEmail" class="input" placeholder="${t('auth.placeholder_email')}" autocomplete="email">
</div>
<button class="btn btn-primary" id="forgotSendBtn" style="width:100%;justify-content:center;padding:10px">${t('auth.forgot_send')}</button>
<button class="btn btn-secondary" id="forgotBackBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">${t('auth.back_to_signin')}</button>
<p id="forgotNotice" style="color:var(--text-secondary);font-size:12px;text-align:center;margin-top:12px;display:none">${t('auth.forgot_sent')}</p>
</div>
<div id="resetForm" style="display:none">
<div class="form-group">
<label>${t('auth.new_password')}</label>
<input type="password" id="resetPassword" class="input" placeholder="${t('auth.placeholder_register_password')}" autocomplete="new-password">
</div>
<button class="btn btn-primary" id="resetSubmitBtn" style="width:100%;justify-content:center;padding:10px">${t('auth.reset_submit')}</button>
<button class="btn btn-secondary" id="resetBackBtn" style="width:100%;justify-content:center;padding:10px;margin-top:8px">${t('auth.back_to_signin')}</button>
</div>
<p id="loginError" style="color:var(--danger);font-size:12px;text-align:center;margin-top:12px;display:none"></p>
<p style="text-align:center;margin-top:16px;font-size:11px;color:var(--text-muted)">
<a href="/legal/terms.html" target="_blank" style="color:var(--text-muted);text-decoration:underline">${t('auth.terms')}</a>
&nbsp;&middot;&nbsp;
<a href="/legal/privacy.html" target="_blank" style="color:var(--text-muted);text-decoration:underline">${t('auth.privacy')}</a>
</p>
</div>
</div>
`;
setupHandlers(config, isSetup);
}
function setupHandlers(config, isSetup) {
const showError = (msg) => {
const el = document.getElementById('loginError');
el.textContent = msg;
el.style.display = 'block';
};
// Outcome of clicking the email-verification link (server GET /verify-email redirects here).
const hashQuery = new URLSearchParams((location.hash.split('?')[1]) || '');
if (hashQuery.get('verified') === '1') showToast(t('auth.verify_ok'), 'success');
else if (hashQuery.get('verify_error') === '1') showToast(t('auth.verify_failed'), 'error');
// Support token login
document.getElementById('supportLoginBtn')?.addEventListener('click', async () => {
const token = document.getElementById('supportToken')?.value.trim();
if (!token) { showError(t('auth.error_paste_support_token')); return; }
try {
const res = await fetch('/api/auth/support', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ token })
});
const data = await res.json();
if (!res.ok) { showError(data.error); return; }
onAuthSuccess(data);
} catch (err) { showError(t('auth.error_support_failed')); }
});
// Local login/register
if (isSetup) {
document.getElementById('loginBtn')?.addEventListener('click', () => doRegister(true));
} else {
document.getElementById('loginBtn')?.addEventListener('click', doLogin);
document.getElementById('showRegisterBtn')?.addEventListener('click', () => {
document.getElementById('localAuthForm').style.display = 'none';
document.getElementById('registerForm').style.display = 'block';
});
document.getElementById('showLoginBtn')?.addEventListener('click', () => {
document.getElementById('localAuthForm').style.display = 'block';
document.getElementById('registerForm').style.display = 'none';
});
document.getElementById('registerBtn')?.addEventListener('click', () => doRegister(false));
}
// Enter key on password field
document.getElementById('loginPassword')?.addEventListener('keydown', (e) => {
if (e.key === 'Enter') isSetup ? doRegister(true) : doLogin();
});
async function doLogin() {
const email = document.getElementById('loginEmail').value.trim();
const password = document.getElementById('loginPassword').value;
if (!email || !password) { showError(t('auth.error_email_password_required')); return; }
try {
const res = await fetch('/api/auth/login', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ email, password })
});
const data = await res.json();
/*
* The organization requires its identity provider, so this is not a credential failure and
* must not read like one — "invalid password" sends the user to reset a password that will
* never work again. Point them at the control that does work.
*/
if (!res.ok && data.code === 'sso_required') { showError(t('auth.sso_required')); return; }
if (!res.ok) { showError(data.error); return; }
// Unverified account (hosted hard-gate): no session — prompt to check email.
if (data.verification_required) { showVerifyNotice(data.email || email); return; }
// #100: TOTP-enabled accounts get no session yet — a second step verifies a code.
if (data.mfa_required) { showMfaChallenge(data.mfa_token); return; }
onAuthSuccess(data);
} catch (err) {
showError(t('auth.error_login_failed'));
}
}
// "Check your email" panel shown when signup/login returns verification_required (hosted).
// ---- Self-service password reset -------------------------------------------------
// Two cards swapped into the same login shell. The request step ALWAYS shows the same
// confirmation regardless of the server's answer, matching the server's deliberate
// refusal to reveal whether an address exists.
function showCard(id) {
['localAuthForm', 'registerForm', 'mfaForm', 'ssoBlock', 'forgotForm', 'resetForm'].forEach((x) => {
const el = document.getElementById(x); if (el) el.style.display = (x === id ? 'block' : 'none');
});
const errEl = document.getElementById('loginError'); if (errEl) errEl.style.display = 'none';
}
const forgotLink = document.getElementById('forgotLink');
if (forgotLink) forgotLink.addEventListener('click', (e) => {
e.preventDefault();
showCard('forgotForm');
const src = document.getElementById('loginEmail');
const dst = document.getElementById('forgotEmail');
if (src && dst) dst.value = src.value; // carry over whatever they already typed
});
const forgotBackBtn = document.getElementById('forgotBackBtn');
if (forgotBackBtn) forgotBackBtn.addEventListener('click', () => showCard('localAuthForm'));
const forgotSendBtn = document.getElementById('forgotSendBtn');
if (forgotSendBtn) forgotSendBtn.addEventListener('click', async () => {
const email = (document.getElementById('forgotEmail').value || '').trim();
forgotSendBtn.disabled = true;
try {
await fetch('/api/auth/forgot-password', {
method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify({ email }),
});
} catch (e) { /* deliberately ignored — see below */ }
// Same confirmation either way. Surfacing a network/server error here would leak
// whether the address matched, undoing the server-side enumeration resistance.
document.getElementById('forgotNotice').style.display = 'block';
forgotSendBtn.disabled = false;
});
// A link from the reset email: #/reset-password?token=...
function resetTokenFromHash() {
const h = window.location.hash || '';
const q = h.indexOf('?');
if (!h.startsWith('#/reset-password') || q < 0) return null;
return new URLSearchParams(h.slice(q + 1)).get('token');
}
const pendingResetToken = resetTokenFromHash();
if (pendingResetToken) showCard('resetForm');
const resetBackBtn = document.getElementById('resetBackBtn');
if (resetBackBtn) resetBackBtn.addEventListener('click', () => { window.location.hash = '#/login'; window.location.reload(); });
const resetSubmitBtn = document.getElementById('resetSubmitBtn');
if (resetSubmitBtn) resetSubmitBtn.addEventListener('click', async () => {
const password = document.getElementById('resetPassword').value || '';
resetSubmitBtn.disabled = true;
try {
const res = await fetch('/api/auth/reset-password', {
method: 'POST', headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ token: pendingResetToken, password }),
});
const data = await res.json().catch(() => ({}));
if (!res.ok) { showError(data.error || t('auth.reset_failed')); resetSubmitBtn.disabled = false; return; }
// No session is issued by design, so send them through a normal sign-in — which is
// what keeps TOTP in the loop for accounts that have it.
showToast(t('auth.reset_done'), 'success');
window.location.hash = '#/login';
window.location.reload();
} catch (e) {
showError(t('auth.reset_failed'));
resetSubmitBtn.disabled = false;
}
});
function showVerifyNotice(email) {
// The server refused a session — make sure no stale token from a prior login lingers,
// else the router would treat this browser as authenticated and bounce it into the app.
localStorage.removeItem('token');
localStorage.removeItem('user');
['localAuthForm', 'registerForm', 'mfaForm', 'ssoBlock', 'supportDetails'].forEach((id) => {
const el = document.getElementById(id); if (el) el.style.display = 'none';
});
document.getElementById('verifyNotice').style.display = 'block';
document.getElementById('verifyEmail').textContent = email || '';
const errEl = document.getElementById('loginError'); if (errEl) errEl.style.display = 'none';
document.getElementById('verifyBackBtn').addEventListener('click', () => window.location.reload());
document.getElementById('verifyResendBtn').addEventListener('click', async () => {
try {
await fetch('/api/auth/resend-verification', {
method: 'POST', headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ email }),
});
showToast(t('auth.verify_resent'), 'success'); // always generic (server never leaks existence)
} catch (e) {
showToast(t('auth.verify_resend_failed'), 'error');
}
});
}
// Swap the card to the 6-digit challenge and exchange mfa_token + code for a session.
function showMfaChallenge(mfaToken) {
['localAuthForm', 'registerForm', 'ssoBlock', 'supportDetails'].forEach((id) => {
const el = document.getElementById(id); if (el) el.style.display = 'none';
});
const form = document.getElementById('mfaForm');
form.style.display = 'block';
const errEl = document.getElementById('loginError'); if (errEl) errEl.style.display = 'none';
const codeEl = document.getElementById('mfaCode');
codeEl.value = '';
codeEl.focus();
const verify = async () => {
const code = codeEl.value.trim();
if (!code) { showError(t('auth.mfa_code_required')); return; }
try {
const res = await fetch('/api/auth/totp/verify', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ mfa_token: mfaToken, code })
});
const data = await res.json();
if (!res.ok) { showError(data.error || t('auth.mfa_invalid')); codeEl.select(); return; }
onAuthSuccess(data);
} catch (err) {
showError(t('auth.error_login_failed'));
}
};
document.getElementById('mfaVerifyBtn').addEventListener('click', verify);
codeEl.addEventListener('keydown', (e) => { if (e.key === 'Enter') verify(); });
document.getElementById('mfaBackBtn').addEventListener('click', () => { window.location.reload(); });
}
async function doRegister(isFirstUser) {
const email = document.getElementById(isFirstUser ? 'loginEmail' : 'regEmail').value.trim();
const password = document.getElementById(isFirstUser ? 'loginPassword' : 'regPassword').value;
const name = document.getElementById(isFirstUser ? 'loginName' : 'regName')?.value.trim() || '';
if (!email || !password) { showError(t('auth.error_email_password_required')); return; }
if (password.length < 6) { showError(t('auth.error_password_min_6')); return; }
try {
const res = await fetch('/api/auth/register', {
method: 'POST',
headers: { 'Content-Type': 'application/json' },
body: JSON.stringify({ email, password, name })
});
const data = await res.json();
if (!res.ok) { showError(data.error); return; }
// Hosted signup requires confirming the email before a session is issued.
if (data.verification_required) { showVerifyNotice(data.email || email); return; }
onAuthSuccess(data);
} catch (err) {
showError(t('auth.error_registration_failed'));
}
}
/*
* SSO is a link, not a script.
*
* The buttons above are anchors to /api/auth/oidc/<slug>/start, so there is nothing to bind here
* and no SDK to wait for. What DOES need handling is the trip back: the callback redirects to
* #/login carrying either a session token or an error code.
*
* The token rides in the URL FRAGMENT, which browsers never send to servers and proxies never
* log — and it is stripped from the address bar before anything else happens, so a shared screen
* or a copied URL does not carry a live session.
*/
/*
* Email-first SSO for organizations.
*
* Instance-wide providers are always on the page. An ORG provider is different — it belongs to
* one customer — so it is fetched by domain once the address looks complete, and only then.
*
* Debounced because this fires while someone types, and the endpoint is rate limited; asking on
* every keystroke would spend a user's whole budget before they finished their own address.
*/
let ssoLookupTimer = null;
let lastDomainAsked = '';
const orgSlot = () => document.getElementById('orgSsoSlot');
/*
* Show or hide the password half of the sign-in form.
*
* Presentation only — the server refuses a password for these accounts regardless. Restoring it
* on every negative answer matters as much as hiding it: someone who types an SSO-only address,
* then corrects it to their own, must get the password box back.
*/
function setPasswordVisible(visible) {
/*
* ⚠️ Hide the password FIELD, never its .form-group — the organization SSO slot lives inside
* that same group, so hiding the container took the single sign-on button down with it and left
* a login page whose only action was "Create Account". Found by looking at a screenshot.
*/
const show = visible ? '' : 'none';
for (const id of ['loginPassword', 'loginPasswordLabel', 'loginBtn']) {
const el = document.getElementById(id);
if (el) el.style.display = show;
}
/*
* The instance's own providers go too. They are the operator's, not this organization's, and
* they are not domain-confined — so offering "Continue with Google" to someone whose company
* requires its own identity provider is offering them the bypass. The server refuses it either
* way; this stops the page inviting it.
*/
const instance = document.getElementById('instanceProviders');
if (instance) instance.style.display = show;
/*
* "Create Account" goes too. Registration at an SSO-only domain is refused by the server, and
* leaving the button was worse than useless: it was the ONLY action left on the card, so the
* page invited the one thing that cannot work.
*/
const reg = document.getElementById('showRegisterBtn');
if (reg) reg.style.display = show;
// The OR divider sits outside #instanceProviders, so hiding those alone left a dangling rule
// with nothing beneath it.
const divider = document.getElementById('ssoDivider');
if (divider) divider.style.display = show;
// "Forgot your password?" sits in its own <p>; hide the wrapper so no empty gap is left.
const forgot = document.getElementById('forgotLink');
if (forgot) {
const wrap = forgot.parentElement && forgot.parentElement.tagName === 'P' ? forgot.parentElement : forgot;
wrap.style.display = show;
}
}
async function lookupOrgSso(email) {
const at = String(email || '').lastIndexOf('@');
const domain = at === -1 ? '' : email.slice(at + 1).trim().toLowerCase();
const slot = orgSlot();
if (!slot) return;
// Nothing to ask about until there is a domain with a dot in it.
if (!domain || !domain.includes('.')) {
slot.style.display = 'none'; slot.innerHTML = ''; lastDomainAsked = ''; setPasswordVisible(true); return;
}
if (domain === lastDomainAsked) return;
try {
const res = await fetch(`/api/auth/sso/discover?email=${encodeURIComponent(email)}`);
/*
* ⚠️ Check the STATUS, not just that a body parsed.
*
* The comment below has always said a tripped rate limit must not poison the domain — and it
* did anyway, because a 429 body is perfectly valid JSON: res.json() resolved, `data.sso`
* came back undefined, so the single sign-on button was hidden, the password box restored,
* and `lastDomainAsked` recorded — permanently, for the life of the page. On an SSO-only
* domain that is the worst possible outcome: the password box the user is then offered gets
* 403, and the button they are told to use is not on the screen. Discover is 10/min per IP,
* so a handful of colleagues behind one office address is enough to trigger it.
*/
if (!res.ok) throw new Error(`discover ${res.status}`);
const data = await res.json();
// Remembered only after a SUCCESSFUL answer.
lastDomainAsked = domain;
if (!data.sso) { slot.style.display = 'none'; slot.innerHTML = ''; setPasswordVisible(true); return; }
/*
* When the organization REQUIRES its identity provider, the password box is not merely going
* to fail — it is the wrong thing to offer. Showing it invites someone to type a password,
* be refused, and go and reset a password that will never work again. Hidden, not disabled,
* so there is one obvious way forward.
*/
setPasswordVisible(!data.required);
/*
* A FORM, not a link, and a deliberately generic label.
*
* The lookup tells us only that this domain uses SSO — never which provider or whose it is,
* because that would identify a customer to anyone who guessed a domain. The server does the
* mapping again on submit, so the slug is never published to the page. POST keeps the address
* out of the URL, browser history and any Referer the provider's page would send.
*/
slot.innerHTML = `
<form method="POST" action="/api/auth/sso/start">
<input type="hidden" name="email" value="${esc(email)}">
<button type="submit" class="btn btn-primary" style="width:100%;justify-content:center;padding:10px">
${t('auth.signin_sso')}
</button>
</form>
<div style="font-size:11px;color:var(--text-muted);margin-top:6px;text-align:center">
${t('auth.sso_org_hint')}
</div>`;
slot.style.display = '';
} catch {
// A failed lookup must never block a password login — the form still works, and the password
// box comes back rather than leaving someone staring at a form with no way to submit it.
slot.style.display = 'none';
slot.innerHTML = '';
setPasswordVisible(true);
}
}
document.getElementById('loginEmail')?.addEventListener('input', (e) => {
clearTimeout(ssoLookupTimer);
const value = e.target.value;
ssoLookupTimer = setTimeout(() => lookupOrgSso(value), 400);
});
/*
* Completing an SSO login.
*
* The callback no longer hands the session token back in the URL — that was a login-CSRF hole,
* because a crafted link could install an ATTACKER'S token and quietly sign the victim into their
* account. The server now leaves it in a one-shot httpOnly cookie and we exchange it here, which
* a link cannot forge.
*
* Wrapped in an async IIFE because setupHandlers() is not async; `await` at this level is a
* SyntaxError that takes the whole module graph down with it, since app.js imports this file
* statically and there is no bundler to catch it first.
*/
const ssoParams = new URLSearchParams((window.location.hash.split('?')[1] || ''));
const ssoReturning = ssoParams.get('sso') === '1';
const ssoError = ssoParams.get('sso_error');
if (ssoReturning || ssoError) {
// Keep any real query string; only the hash carried the SSO markers.
history.replaceState(null, '', window.location.pathname + window.location.search + '#/login');
}
if (ssoReturning) {
(async () => {
try {
const res = await fetch('/api/auth/sso/claim', { method: 'POST' });
if (!res.ok) throw new Error('claim rejected');
const data = await res.json();
onAuthSuccess(data);
} catch {
showToast(t('auth.sso_failed'), 'error');
}
})();
} else if (ssoError) {
// Every code the callback can emit has a message; an unknown one still says something true
// rather than failing silently, which is how the previous implementation behaved on every click.
const known = ['expired', 'bad_state', 'no_code', 'no_email', 'email_unverified',
'verification_failed', 'provider_refused', 'provider_unavailable', 'unknown_provider',
'registration_disabled', 'account_exists_local', 'subject_mismatch', 'server_error',
'domain_not_allowed', 'account_exists_other_provider', 'sso_required'];
const key = known.includes(ssoError) ? `auth.sso_err_${ssoError}` : 'auth.sso_failed';
showToast(t(key), 'error');
}
}
function onAuthSuccess(data) {
// Defensive: only a response that actually carries a session token logs the user in. A
// tokenless response (e.g. verification_required / mfa_required) must never be stored as a
// session — otherwise isAuthenticated() would pass on the string "undefined" and the router
// would bounce an un-authenticated browser into the app / setup wizard.
if (!data || !data.token) return;
localStorage.setItem('token', data.token);
localStorage.setItem('user', JSON.stringify(data.user));
window.location.hash = '#/';
window.location.reload();
}
export function cleanup() {}