digitaldemocratic/custom.sample/keycloak/base/login/webauthn-authenticate.ftl

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<#import "template.ftl" as layout>
<@layout.registrationLayout showAnotherWayIfPresent=false; section>
<#if section = "title">
title
<#elseif section = "header">
${kcSanitize(msg("webauthn-login-title"))?no_esc}
<#elseif section = "form">
<form id="webauth" class="${properties.kcFormClass!}" action="${url.loginAction}" method="post">
<div class="${properties.kcFormGroupClass!}">
<input type="hidden" id="clientDataJSON" name="clientDataJSON"/>
<input type="hidden" id="authenticatorData" name="authenticatorData"/>
<input type="hidden" id="signature" name="signature"/>
<input type="hidden" id="credentialId" name="credentialId"/>
<input type="hidden" id="userHandle" name="userHandle"/>
<input type="hidden" id="error" name="error"/>
</div>
</form>
<#if authenticators??>
<form id="authn_select" class="${properties.kcFormClass!}">
<#list authenticators.authenticators as authenticator>
<input type="hidden" name="authn_use_chk" value="${authenticator.credentialId}"/>
</#list>
</form>
</#if>
<script type="text/javascript" src="${url.resourcesPath}/node_modules/jquery/dist/jquery.min.js"></script>
<script type="text/javascript" src="${url.resourcesPath}/js/base64url.js"></script>
<script type="text/javascript">
window.onload = () => {
let isUserIdentified = ${isUserIdentified};
if (!isUserIdentified) {
doAuthenticate([]);
return;
}
checkAllowCredentials();
};
function checkAllowCredentials() {
let allowCredentials = [];
let authn_use = document.forms['authn_select'].authn_use_chk;
if (authn_use !== undefined) {
if (authn_use.length === undefined) {
allowCredentials.push({
id: base64url.decode(authn_use.value, {loose: true}),
type: 'public-key',
});
} else {
for (let i = 0; i < authn_use.length; i++) {
allowCredentials.push({
id: base64url.decode(authn_use[i].value, {loose: true}),
type: 'public-key',
});
}
}
}
doAuthenticate(allowCredentials);
}
function doAuthenticate(allowCredentials) {
let challenge = "${challenge}";
let userVerification = "${userVerification}";
let rpId = "${rpId}";
let publicKey = {
rpId : rpId,
challenge: base64url.decode(challenge, { loose: true })
};
if (allowCredentials.length) {
publicKey.allowCredentials = allowCredentials;
}
if (userVerification !== 'not specified') publicKey.userVerification = userVerification;
navigator.credentials.get({publicKey})
.then((result) => {
window.result = result;
let clientDataJSON = result.response.clientDataJSON;
let authenticatorData = result.response.authenticatorData;
let signature = result.response.signature;
$("#clientDataJSON").val(base64url.encode(new Uint8Array(clientDataJSON), { pad: false }));
$("#authenticatorData").val(base64url.encode(new Uint8Array(authenticatorData), { pad: false }));
$("#signature").val(base64url.encode(new Uint8Array(signature), { pad: false }));
$("#credentialId").val(result.id);
if(result.response.userHandle) {
$("#userHandle").val(base64url.encode(new Uint8Array(result.response.userHandle), { pad: false }));
}
$("#webauth").submit();
})
.catch((err) => {
$("#error").val(err);
$("#webauth").submit();
})
;
}
</script>
<#elseif section = "info">
</#if>
</@layout.registrationLayout>