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import {encode, decode} from 'uint8-to-base64';
const {appSubUrl, csrfToken} = window.config;
export function initUserAuthWebAuthn() {
if ($('.user.signin.webauthn-prompt').length === 0) {
return;
}
if (!detectWebAuthnSupport()) {
return;
}
$.getJSON(`${appSubUrl}/user/webauthn/assertion`, {})
.done((makeAssertionOptions) => {
makeAssertionOptions.publicKey.challenge = decode(makeAssertionOptions.publicKey.challenge);
for (let i = 0; i < makeAssertionOptions.publicKey.allowCredentials.length; i++) {
makeAssertionOptions.publicKey.allowCredentials[i].id = decode(makeAssertionOptions.publicKey.allowCredentials[i].id);
}
navigator.credentials.get({
publicKey: makeAssertionOptions.publicKey
})
.then((credential) => {
verifyAssertion(credential);
}).catch((err) => {
webAuthnError(0, err.message);
});
}).fail(() => {
webAuthnError('unknown');
});
}
function verifyAssertion(assertedCredential) {
// Move data into Arrays incase it is super long
const authData = new Uint8Array(assertedCredential.response.authenticatorData);
const clientDataJSON = new Uint8Array(assertedCredential.response.clientDataJSON);
const rawId = new Uint8Array(assertedCredential.rawId);
const sig = new Uint8Array(assertedCredential.response.signature);
const userHandle = new Uint8Array(assertedCredential.response.userHandle);
$.ajax({
url: `${appSubUrl}/user/webauthn/assertion`,
type: 'POST',
data: JSON.stringify({
id: assertedCredential.id,
rawId: bufferEncode(rawId),
type: assertedCredential.type,
clientExtensionResults: assertedCredential.getClientExtensionResults(),
response: {
authenticatorData: bufferEncode(authData),
clientDataJSON: bufferEncode(clientDataJSON),
signature: bufferEncode(sig),
userHandle: bufferEncode(userHandle),
},
}),
contentType: 'application/json; charset=utf-8',
dataType: 'json',
success: (resp) => {
if (resp && resp['redirect']) {
window.location.href = resp['redirect'];
} else {
window.location.href = '/';
}
},
error: (xhr) => {
if (xhr.status === 500) {
webAuthnError('unknown');
return;
}
webAuthnError('unable-to-process');
}
});
}
// Encode an ArrayBuffer into a base64 string.
function bufferEncode(value) {
return encode(value)
.replace(/\+/g, '-')
.replace(/\//g, '_')
.replace(/=/g, '');
}
function webauthnRegistered(newCredential) {
const attestationObject = new Uint8Array(newCredential.response.attestationObject);
const clientDataJSON = new Uint8Array(newCredential.response.clientDataJSON);
const rawId = new Uint8Array(newCredential.rawId);
return $.ajax({
url: `${appSubUrl}/user/settings/security/webauthn/register`,
type: 'POST',
headers: {'X-Csrf-Token': csrfToken},
data: JSON.stringify({
id: newCredential.id,
rawId: bufferEncode(rawId),
type: newCredential.type,
response: {
attestationObject: bufferEncode(attestationObject),
clientDataJSON: bufferEncode(clientDataJSON),
},
}),
dataType: 'json',
contentType: 'application/json; charset=utf-8',
}).then(() => {
window.location.reload();
}).fail((xhr) => {
if (xhr.status === 409) {
webAuthnError('duplicated');
return;
}
webAuthnError('unknown');
});
}
function webAuthnError(errorType, message) {
$('#webauthn-error [data-webauthn-error-msg]').hide();
if (errorType === 0 && message && message.length > 1) {
$(`#webauthn-error [data-webauthn-error-msg=0]`).text(message);
$(`#webauthn-error [data-webauthn-error-msg=0]`).show();
} else {
$(`#webauthn-error [data-webauthn-error-msg=${errorType}]`).show();
}
$('#webauthn-error').modal('show');
}
function detectWebAuthnSupport() {
if (!window.isSecureContext) {
$('#register-button').prop('disabled', true);
$('#login-button').prop('disabled', true);
webAuthnError('insecure');
return false;
}
if (typeof window.PublicKeyCredential !== 'function') {
$('#register-button').prop('disabled', true);
$('#login-button').prop('disabled', true);
webAuthnError('browser');
return false;
}
return true;
}
export function initUserAuthWebAuthnRegister() {
if ($('#register-webauthn').length === 0) {
return;
}
if (!detectWebAuthnSupport()) {
return;
}
$('#register-device').modal({allowMultiple: false});
$('#webauthn-error').modal({allowMultiple: false});
$('#register-webauthn').on('click', (e) => {
e.preventDefault();
webAuthnRegisterRequest();
});
}
function webAuthnRegisterRequest() {
if ($('#nickname').val() === '') {
webAuthnError('empty');
return;
}
$.post(`${appSubUrl}/user/settings/security/webauthn/request_register`, {
_csrf: csrfToken,
name: $('#nickname').val(),
}).done((makeCredentialOptions) => {
$('#nickname').closest('div.field').removeClass('error');
$('#register-device').modal('show');
makeCredentialOptions.publicKey.challenge = decode(makeCredentialOptions.publicKey.challenge);
makeCredentialOptions.publicKey.user.id = decode(makeCredentialOptions.publicKey.user.id);
if (makeCredentialOptions.publicKey.excludeCredentials) {
for (let i = 0; i < makeCredentialOptions.publicKey.excludeCredentials.length; i++) {
makeCredentialOptions.publicKey.excludeCredentials[i].id = decode(makeCredentialOptions.publicKey.excludeCredentials[i].id);
}
}
navigator.credentials.create({
publicKey: makeCredentialOptions.publicKey
}).then(webauthnRegistered)
.catch((err) => {
if (!err) {
webAuthnError('unknown');
return;
}
webAuthnError(0, err);
});
}).fail((xhr) => {
if (xhr.status === 409) {
webAuthnError('duplicated');
return;
}
webAuthnError('unknown');
});
}
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