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Fix webauthn regression and improve code #25113

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Jun 7, 2023
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33 changes: 17 additions & 16 deletions templates/user/auth/webauthn.tmpl
Original file line number Diff line number Diff line change
@@ -1,21 +1,22 @@
{{template "base/head" .}}
<div class="user signin webauthn-prompt">
<div class="ui middle centered very relaxed page grid">
<div role="main" aria-label="{{.Title}}" class="page-content user signin webauthn-prompt">
<div class="ui page grid">
<div class="column center aligned">
<h3 class="ui top attached header">
{{.locale.Tr "twofa"}}
</h3>
{{template "user/auth/webauthn_error" .}}
<div class="ui attached segment">
{{svg "octicon-key" 56}}
<h3>{{.locale.Tr "webauthn_insert_key"}}</h3>
{{template "base/alert" .}}
<p>{{.locale.Tr "webauthn_sign_in"}}</p>
</div>
<div class="ui attached segment"><div class="ui active indeterminate inline loader"></div> {{.locale.Tr "webauthn_press_button"}} </div>
<div class="ui attached segment">
<a href="{{AppSubUrl}}/user/two_factor">{{.locale.Tr "webauthn_use_twofa"}}</a>
</div>
{{template "user/auth/webauthn_error" .}}
<h3 class="ui top attached header">{{.locale.Tr "twofa"}}</h3>
<div class="ui attached segment">
{{svg "octicon-key" 56}}
<h3>{{.locale.Tr "webauthn_insert_key"}}</h3>
{{template "base/alert" .}}
<p>{{.locale.Tr "webauthn_sign_in"}}</p>
</div>
<div class="ui attached segment">
<div class="ui active indeterminate inline loader"></div>
{{.locale.Tr "webauthn_press_button"}}
</div>
<div class="ui attached segment">
<a href="{{AppSubUrl}}/user/two_factor">{{.locale.Tr "webauthn_use_twofa"}}</a>
</div>
</div>
</div>
</div>
Expand Down
22 changes: 11 additions & 11 deletions templates/user/auth/webauthn_error.tmpl
Original file line number Diff line number Diff line change
@@ -1,13 +1,13 @@
<div id="webauthn-error" class="ui small gt-hidden">
<div class="content ui negative message gt-df gt-fc gt-gap-3">
<div class="header">{{.locale.Tr "webauthn_error"}}</div>
<div id="webauthn-error-msg"></div>
<div class="gt-hidden" data-webauthn-error-msg="browser">{{.locale.Tr "webauthn_unsupported_browser"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="unknown">{{.locale.Tr "webauthn_error_unknown"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="insecure">{{.locale.Tr "webauthn_error_insecure"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="unable-to-process">{{.locale.Tr "webauthn_error_unable_to_process"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="duplicated">{{.locale.Tr "webauthn_error_duplicated"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="empty">{{.locale.Tr "webauthn_error_empty"}}</div>
<div class="gt-hidden" data-webauthn-error-msg="timeout">{{.locale.Tr "webauthn_error_timeout"}}</div>
<div id="webauthn-error" class="ui negative message gt-hidden">
<div class="header">{{.locale.Tr "webauthn_error"}}</div>
<div id="webauthn-error-msg" class="gt-pt-3"></div>
<div class="gt-hidden">
<div data-webauthn-error-msg="browser">{{.locale.Tr "webauthn_unsupported_browser"}}</div>
<div data-webauthn-error-msg="unknown">{{.locale.Tr "webauthn_error_unknown"}}</div>
<div data-webauthn-error-msg="insecure">{{.locale.Tr "webauthn_error_insecure"}}</div>
<div data-webauthn-error-msg="unable-to-process">{{.locale.Tr "webauthn_error_unable_to_process"}}</div>
<div data-webauthn-error-msg="duplicated">{{.locale.Tr "webauthn_error_duplicated"}}</div>
<div data-webauthn-error-msg="empty">{{.locale.Tr "webauthn_error_empty"}}</div>
<div data-webauthn-error-msg="timeout">{{.locale.Tr "webauthn_error_timeout"}}</div>
</div>
</div>
6 changes: 1 addition & 5 deletions templates/user/settings/security/webauthn.tmpl
Original file line number Diff line number Diff line change
@@ -1,6 +1,4 @@
<h4 class="ui top attached header">
{{.locale.Tr "settings.webauthn"}}
</h4>
<h4 class="ui top attached header">{{.locale.Tr "settings.webauthn"}}</h4>
<div class="ui attached segment">
<p>{{.locale.Tr "settings.webauthn_desc" | Str2html}}</p>
{{template "user/auth/webauthn_error" .}}
Expand All @@ -20,7 +18,6 @@
{{end}}
</div>
<div class="ui form">
{{.CsrfTokenHtml}}
<div class="required field">
<label for="nickname">{{.locale.Tr "settings.webauthn_nickname"}}</label>
<input id="nickname" name="nickname" type="text" required>
Expand All @@ -29,7 +26,6 @@
</div>
</div>


<div class="ui g-modal-confirm delete modal" id="delete-registration">
<div class="header">
{{svg "octicon-trash"}}
Expand Down
4 changes: 0 additions & 4 deletions web_src/css/form.css
Original file line number Diff line number Diff line change
Expand Up @@ -394,10 +394,6 @@ textarea:focus,
margin: 0;
}

.user.signin.webauthn-prompt {
margin-top: 15px;
}

.repository.new.repo form,
.repository.new.migrate form,
.repository.new.fork form {
Expand Down
43 changes: 16 additions & 27 deletions web_src/js/features/user-auth-webauthn.js
Original file line number Diff line number Diff line change
@@ -1,11 +1,9 @@
import {encodeURLEncodedBase64, decodeURLEncodedBase64} from '../utils.js';
import {showElem, hideElem} from '../utils/dom.js';
import {showElem} from '../utils/dom.js';

const {appSubUrl, csrfToken} = window.config;

export async function initUserAuthWebAuthn() {
hideElem('#webauthn-error');

const elPrompt = document.querySelector('.user.signin.webauthn-prompt');
if (!elPrompt) {
return;
Expand All @@ -25,21 +23,21 @@ export async function initUserAuthWebAuthn() {
for (const cred of options.publicKey.allowCredentials) {
cred.id = decodeURLEncodedBase64(cred.id);
}
const credential = await navigator.credentials.get({
publicKey: options.publicKey
});
try {
const credential = await navigator.credentials.get({
publicKey: options.publicKey
});
await verifyAssertion(credential);
} catch (err) {
if (!options.publicKey.extensions?.appid) {
webAuthnError('general', err.message);
return;
}
delete options.publicKey.extensions.appid;
const credential = await navigator.credentials.get({
publicKey: options.publicKey
});
try {
const credential = await navigator.credentials.get({
publicKey: options.publicKey
});
await verifyAssertion(credential);
} catch (err) {
webAuthnError('general', err.message);
Expand All @@ -48,7 +46,7 @@ export async function initUserAuthWebAuthn() {
}

async function verifyAssertion(assertedCredential) {
// Move data into Arrays incase it is super long
// Move data into Arrays in case it is super long
const authData = new Uint8Array(assertedCredential.response.authenticatorData);
const clientDataJSON = new Uint8Array(assertedCredential.response.clientDataJSON);
const rawId = new Uint8Array(assertedCredential.rawId);
Expand Down Expand Up @@ -137,15 +135,11 @@ function webAuthnError(errorType, message) {

function detectWebAuthnSupport() {
if (!window.isSecureContext) {
document.getElementById('register-button').disabled = true;
document.getElementById('login-button').disabled = true;
webAuthnError('insecure');
return false;
}

if (typeof window.PublicKeyCredential !== 'function') {
document.getElementById('register-button').disabled = true;
document.getElementById('login-button').disabled = true;
webAuthnError('browser');
return false;
}
Expand All @@ -158,15 +152,13 @@ export function initUserAuthWebAuthnRegister() {
if (!elRegister) {
return;
}

hideElem('#webauthn-error');

elRegister.addEventListener('click', (e) => {
if (!detectWebAuthnSupport()) {
elRegister.disabled = true;
return;
}
elRegister.addEventListener('click', async (e) => {
e.preventDefault();
if (!detectWebAuthnSupport()) {
return;
}
webAuthnRegisterRequest();
await webAuthnRegisterRequest();
});
}

Expand Down Expand Up @@ -203,15 +195,12 @@ async function webAuthnRegisterRequest() {
}
}

let credential;
try {
credential = await navigator.credentials.create({
const credential = await navigator.credentials.create({
publicKey: options.publicKey
});
await webauthnRegistered(credential);
} catch (err) {
webAuthnError('unknown', err);
return;
}

webauthnRegistered(credential);
}
15 changes: 12 additions & 3 deletions web_src/js/utils.test.js
Original file line number Diff line number Diff line change
Expand Up @@ -133,8 +133,17 @@ test('toAbsoluteUrl', () => {
expect(() => toAbsoluteUrl('path')).toThrowError('unsupported');
});

const uint8array = (s) => new TextEncoder().encode(s);
test('encodeURLEncodedBase64, decodeURLEncodedBase64', () => {
expect(encodeURLEncodedBase64(decodeURLEncodedBase64('foo'))).toEqual('foo'); // No = padding
expect(encodeURLEncodedBase64(decodeURLEncodedBase64('a-minus'))).toEqual('a-minus');
expect(encodeURLEncodedBase64(decodeURLEncodedBase64('_underscorc'))).toEqual('_underscorc');
expect(encodeURLEncodedBase64(uint8array('AA?'))).toEqual('QUE_'); // standard base64: "QUE/"
expect(encodeURLEncodedBase64(uint8array('AA~'))).toEqual('QUF-'); // standard base64: "QUF+"

expect(decodeURLEncodedBase64('QUE/')).toEqual(uint8array('AA?'));
expect(decodeURLEncodedBase64('QUF+')).toEqual(uint8array('AA~'));
expect(decodeURLEncodedBase64('QUE_')).toEqual(uint8array('AA?'));
expect(decodeURLEncodedBase64('QUF-')).toEqual(uint8array('AA~'));

expect(encodeURLEncodedBase64(uint8array('a'))).toEqual('YQ'); // standard base64: "YQ=="
expect(decodeURLEncodedBase64('YQ')).toEqual(uint8array('a'));
expect(decodeURLEncodedBase64('YQ==')).toEqual(uint8array('a'));
});