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Add support for Web Authentication API
Adds a two factor authentication plugin that supports FIDO2/WebAuthn security keys. Signed-off-by: Maurício Meneghini Fauth <mauricio@fauth.dev>
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Original file line number | Diff line number | Diff line change |
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/** | ||
* @param {ArrayBuffer} buffer | ||
* | ||
* @return {string} | ||
*/ | ||
const arrayBufferToBase64 = buffer => { | ||
const bytes = new Uint8Array(buffer); | ||
let string = ''; | ||
for (const byte of bytes) { | ||
string += String.fromCharCode(byte); | ||
} | ||
|
||
return window.btoa(string); | ||
}; | ||
|
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/** | ||
* @param {string} string | ||
* | ||
* @return {Uint8Array} | ||
*/ | ||
const base64ToUint8Array = string => { | ||
return Uint8Array.from(window.atob(string), char => char.charCodeAt(0)); | ||
}; | ||
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||
/** | ||
* @param {JQuery<HTMLElement>} $input | ||
* | ||
* @return {void} | ||
*/ | ||
const handleCreation = $input => { | ||
const $form = $input.parents('form'); | ||
$form.find('input[type=submit]').hide(); | ||
|
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const creationOptionsJson = $input.attr('data-creation-options'); | ||
const creationOptions = JSON.parse(creationOptionsJson); | ||
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const publicKey = creationOptions; | ||
publicKey.challenge = base64ToUint8Array(creationOptions.challenge); | ||
publicKey.user.id = base64ToUint8Array(creationOptions.user.id); | ||
if (creationOptions.excludeCredentials) { | ||
const excludedCredentials = []; | ||
for (let value of creationOptions.excludeCredentials) { | ||
let excludedCredential = value; | ||
excludedCredential.id = base64ToUint8Array(value.id); | ||
excludedCredentials.push(excludedCredential); | ||
} | ||
publicKey.excludeCredentials = excludedCredentials; | ||
} | ||
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// eslint-disable-next-line compat/compat | ||
navigator.credentials.create({ publicKey: publicKey }) | ||
.then((credential) => { | ||
const credentialJson = JSON.stringify({ | ||
id: credential.id, | ||
rawId: arrayBufferToBase64(credential.rawId), | ||
type: credential.type, | ||
response: { | ||
clientDataJSON: arrayBufferToBase64(credential.response.clientDataJSON), | ||
attestationObject: arrayBufferToBase64(credential.response.attestationObject), | ||
} | ||
}); | ||
$input.val(credentialJson); | ||
$form.trigger('submit'); | ||
}) | ||
.catch((error) => Functions.ajaxShowMessage(error, false, 'error')); | ||
}; | ||
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/** | ||
* @param {JQuery<HTMLElement>} $input | ||
* | ||
* @return {void} | ||
*/ | ||
const handleRequest = $input => { | ||
const $form = $input.parents('form'); | ||
$form.find('input[type=submit]').hide(); | ||
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const requestOptionsJson = $input.attr('data-request-options'); | ||
const requestOptions = JSON.parse(requestOptionsJson); | ||
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const publicKey = requestOptions; | ||
publicKey.challenge = base64ToUint8Array(requestOptions.challenge); | ||
if (requestOptions.allowCredentials) { | ||
const allowedCredentials = []; | ||
for (let value of requestOptions.allowCredentials) { | ||
let allowedCredential = value; | ||
allowedCredential.id = base64ToUint8Array(value.id); | ||
allowedCredentials.push(allowedCredential); | ||
} | ||
publicKey.allowCredentials = allowedCredentials; | ||
} | ||
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// eslint-disable-next-line compat/compat | ||
navigator.credentials.get({ publicKey: publicKey }) | ||
.then((credential) => { | ||
const credentialJson = JSON.stringify({ | ||
id: credential.id, | ||
rawId: arrayBufferToBase64(credential.rawId), | ||
type: credential.type, | ||
response: { | ||
authenticatorData: arrayBufferToBase64(credential.response.authenticatorData), | ||
clientDataJSON: arrayBufferToBase64(credential.response.clientDataJSON), | ||
signature: arrayBufferToBase64(credential.response.signature), | ||
userHandle: arrayBufferToBase64(credential.response.userHandle), | ||
} | ||
}); | ||
$input.val(credentialJson); | ||
$form.trigger('submit'); | ||
}) | ||
.catch((error) => Functions.ajaxShowMessage(error, false, 'error')); | ||
}; | ||
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AJAX.registerOnload('webauthn.js', function () { | ||
if ( | ||
! navigator.credentials | ||
|| ! navigator.credentials.create | ||
|| ! navigator.credentials.get | ||
|| ! window.PublicKeyCredential | ||
) { | ||
Functions.ajaxShowMessage(Messages.webAuthnNotSupported, false, 'error'); | ||
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return; | ||
} | ||
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const $creationInput = $('#webauthn_creation_response'); | ||
if ($creationInput.length > 0) { | ||
handleCreation($creationInput); | ||
} | ||
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const $requestInput = $('#webauthn_request_response'); | ||
if ($requestInput.length > 0) { | ||
handleRequest($requestInput); | ||
} | ||
}); |
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