forked from mirrors/gecko-dev
6ded2cf370
Reviewers: jcj, johannh Reviewed By: jcj, johannh Bug #: 1430150 Differential Revision: https://phabricator.services.mozilla.com/D638 --HG-- rename : dom/webauthn/tests/cbor/cbor.js => dom/webauthn/tests/cbor.js extra : amend_source : f137c2aebea5797cd07d4500cb71c2b9be4e4844
917 lines
29 KiB
C++
917 lines
29 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
||
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
|
||
/* This Source Code Form is subject to the terms of the Mozilla Public
|
||
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
||
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
||
|
||
#include "hasht.h"
|
||
#include "nsICryptoHash.h"
|
||
#include "nsNetCID.h"
|
||
#include "nsThreadUtils.h"
|
||
#include "WebAuthnCoseIdentifiers.h"
|
||
#include "mozilla/dom/AuthenticatorAttestationResponse.h"
|
||
#include "mozilla/dom/Promise.h"
|
||
#include "mozilla/dom/PWebAuthnTransaction.h"
|
||
#include "mozilla/dom/U2FUtil.h"
|
||
#include "mozilla/dom/WebAuthnCBORUtil.h"
|
||
#include "mozilla/dom/WebAuthnManager.h"
|
||
#include "mozilla/dom/WebAuthnTransactionChild.h"
|
||
#include "mozilla/dom/WebAuthnUtil.h"
|
||
#include "mozilla/ipc/BackgroundChild.h"
|
||
#include "mozilla/ipc/PBackgroundChild.h"
|
||
|
||
using namespace mozilla::ipc;
|
||
|
||
namespace mozilla {
|
||
namespace dom {
|
||
|
||
/***********************************************************************
|
||
* Protocol Constants
|
||
**********************************************************************/
|
||
|
||
const uint8_t FLAG_TUP = 0x01; // Test of User Presence required
|
||
const uint8_t FLAG_AT = 0x40; // Authenticator Data is provided
|
||
const uint8_t FLAG_UV = 0x04; // User was Verified (biometrics, etc.); this
|
||
// flag is not possible with U2F devices
|
||
|
||
/***********************************************************************
|
||
* Statics
|
||
**********************************************************************/
|
||
|
||
namespace {
|
||
static mozilla::LazyLogModule gWebAuthnManagerLog("webauthnmanager");
|
||
}
|
||
|
||
NS_IMPL_ISUPPORTS(WebAuthnManager, nsIDOMEventListener);
|
||
|
||
/***********************************************************************
|
||
* Utility Functions
|
||
**********************************************************************/
|
||
|
||
static nsresult
|
||
AssembleClientData(const nsAString& aOrigin,
|
||
const CryptoBuffer& aChallenge,
|
||
const nsAString& aType,
|
||
const AuthenticationExtensionsClientInputs& aExtensions,
|
||
/* out */ nsACString& aJsonOut)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
nsString challengeBase64;
|
||
nsresult rv = aChallenge.ToJwkBase64(challengeBase64);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
|
||
CollectedClientData clientDataObject;
|
||
clientDataObject.mType.Assign(aType);
|
||
clientDataObject.mChallenge.Assign(challengeBase64);
|
||
clientDataObject.mOrigin.Assign(aOrigin);
|
||
clientDataObject.mHashAlgorithm.AssignLiteral(u"SHA-256");
|
||
clientDataObject.mClientExtensions = aExtensions;
|
||
|
||
nsAutoString temp;
|
||
if (NS_WARN_IF(!clientDataObject.ToJSON(temp))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
|
||
aJsonOut.Assign(NS_ConvertUTF16toUTF8(temp));
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
GetOrigin(nsPIDOMWindowInner* aParent,
|
||
/*out*/ nsAString& aOrigin, /*out*/ nsACString& aHost)
|
||
{
|
||
MOZ_ASSERT(aParent);
|
||
nsCOMPtr<nsIDocument> doc = aParent->GetDoc();
|
||
MOZ_ASSERT(doc);
|
||
|
||
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
|
||
nsresult rv = nsContentUtils::GetUTFOrigin(principal, aOrigin);
|
||
if (NS_WARN_IF(NS_FAILED(rv)) ||
|
||
NS_WARN_IF(aOrigin.IsEmpty())) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
|
||
if (aOrigin.EqualsLiteral("null")) {
|
||
// 4.1.1.3 If callerOrigin is an opaque origin, reject promise with a
|
||
// DOMException whose name is "NotAllowedError", and terminate this
|
||
// algorithm
|
||
MOZ_LOG(gWebAuthnManagerLog, LogLevel::Debug, ("Rejecting due to opaque origin"));
|
||
return NS_ERROR_DOM_NOT_ALLOWED_ERR;
|
||
}
|
||
|
||
nsCOMPtr<nsIURI> originUri;
|
||
if (NS_FAILED(principal->GetURI(getter_AddRefs(originUri)))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
if (NS_FAILED(originUri->GetAsciiHost(aHost))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
|
||
return NS_OK;
|
||
}
|
||
|
||
nsresult
|
||
RelaxSameOrigin(nsPIDOMWindowInner* aParent,
|
||
const nsAString& aInputRpId,
|
||
/* out */ nsACString& aRelaxedRpId)
|
||
{
|
||
MOZ_ASSERT(aParent);
|
||
nsCOMPtr<nsIDocument> doc = aParent->GetDoc();
|
||
MOZ_ASSERT(doc);
|
||
|
||
nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal();
|
||
nsCOMPtr<nsIURI> uri;
|
||
if (NS_FAILED(principal->GetURI(getter_AddRefs(uri)))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
nsAutoCString originHost;
|
||
if (NS_FAILED(uri->GetAsciiHost(originHost))) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
nsCOMPtr<nsIDocument> document = aParent->GetDoc();
|
||
if (!document || !document->IsHTMLDocument()) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
nsHTMLDocument* html = document->AsHTMLDocument();
|
||
if (NS_WARN_IF(!html)) {
|
||
return NS_ERROR_FAILURE;
|
||
}
|
||
|
||
if (!html->IsRegistrableDomainSuffixOfOrEqualTo(aInputRpId, originHost)) {
|
||
return NS_ERROR_DOM_SECURITY_ERR;
|
||
}
|
||
|
||
aRelaxedRpId.Assign(NS_ConvertUTF16toUTF8(aInputRpId));
|
||
return NS_OK;
|
||
}
|
||
|
||
/***********************************************************************
|
||
* WebAuthnManager Implementation
|
||
**********************************************************************/
|
||
|
||
void
|
||
WebAuthnManager::ClearTransaction()
|
||
{
|
||
if (!NS_WARN_IF(mTransaction.isNothing())) {
|
||
StopListeningForVisibilityEvents();
|
||
}
|
||
|
||
mTransaction.reset();
|
||
Unfollow();
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::RejectTransaction(const nsresult& aError)
|
||
{
|
||
if (!NS_WARN_IF(mTransaction.isNothing())) {
|
||
mTransaction.ref().mPromise->MaybeReject(aError);
|
||
}
|
||
|
||
ClearTransaction();
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::CancelTransaction(const nsresult& aError)
|
||
{
|
||
if (!NS_WARN_IF(!mChild || mTransaction.isNothing())) {
|
||
mChild->SendRequestCancel(mTransaction.ref().mId);
|
||
}
|
||
|
||
RejectTransaction(aError);
|
||
}
|
||
|
||
WebAuthnManager::~WebAuthnManager()
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
if (mTransaction.isSome()) {
|
||
RejectTransaction(NS_ERROR_ABORT);
|
||
}
|
||
|
||
if (mChild) {
|
||
RefPtr<WebAuthnTransactionChild> c;
|
||
mChild.swap(c);
|
||
c->Disconnect();
|
||
}
|
||
}
|
||
|
||
already_AddRefed<Promise>
|
||
WebAuthnManager::MakeCredential(const PublicKeyCredentialCreationOptions& aOptions,
|
||
const Optional<OwningNonNull<AbortSignal>>& aSignal)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
if (mTransaction.isSome()) {
|
||
CancelTransaction(NS_ERROR_ABORT);
|
||
}
|
||
|
||
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(mParent);
|
||
|
||
ErrorResult rv;
|
||
RefPtr<Promise> promise = Promise::Create(global, rv);
|
||
if (rv.Failed()) {
|
||
return nullptr;
|
||
}
|
||
|
||
// Abort the request if aborted flag is already set.
|
||
if (aSignal.WasPassed() && aSignal.Value().Aborted()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsString origin;
|
||
nsCString rpId;
|
||
rv = GetOrigin(mParent, origin, rpId);
|
||
if (NS_WARN_IF(rv.Failed())) {
|
||
promise->MaybeReject(rv);
|
||
return promise.forget();
|
||
}
|
||
|
||
// Enforce 5.4.3 User Account Parameters for Credential Generation
|
||
// When we add UX, we'll want to do more with this value, but for now
|
||
// we just have to verify its correctness.
|
||
{
|
||
CryptoBuffer userId;
|
||
userId.Assign(aOptions.mUser.mId);
|
||
if (userId.Length() > 64) {
|
||
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR);
|
||
return promise.forget();
|
||
}
|
||
}
|
||
|
||
// If timeoutSeconds was specified, check if its value lies within a
|
||
// reasonable range as defined by the platform and if not, correct it to the
|
||
// closest value lying within that range.
|
||
|
||
uint32_t adjustedTimeout = 30000;
|
||
if (aOptions.mTimeout.WasPassed()) {
|
||
adjustedTimeout = aOptions.mTimeout.Value();
|
||
adjustedTimeout = std::max(15000u, adjustedTimeout);
|
||
adjustedTimeout = std::min(120000u, adjustedTimeout);
|
||
}
|
||
|
||
if (aOptions.mRp.mId.WasPassed()) {
|
||
// If rpId is specified, then invoke the procedure used for relaxing the
|
||
// same-origin restriction by setting the document.domain attribute, using
|
||
// rpId as the given value but without changing the current document’s
|
||
// domain. If no errors are thrown, set rpId to the value of host as
|
||
// computed by this procedure, and rpIdHash to the SHA-256 hash of rpId.
|
||
// Otherwise, reject promise with a DOMException whose name is
|
||
// "SecurityError", and terminate this algorithm.
|
||
|
||
if (NS_FAILED(RelaxSameOrigin(mParent, aOptions.mRp.mId.Value(), rpId))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
}
|
||
|
||
// <https://w3c.github.io/webauthn/#sctn-appid-extension>
|
||
if (aOptions.mExtensions.mAppid.WasPassed()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
CryptoBuffer rpIdHash;
|
||
if (!rpIdHash.SetLength(SHA256_LENGTH, fallible)) {
|
||
promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsresult srv;
|
||
nsCOMPtr<nsICryptoHash> hashService =
|
||
do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &srv);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
srv = HashCString(hashService, rpId, rpIdHash);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
|
||
// TODO: Move this logic into U2FTokenManager in Bug 1409220.
|
||
|
||
// Process each element of mPubKeyCredParams using the following steps, to
|
||
// produce a new sequence acceptableParams.
|
||
nsTArray<PublicKeyCredentialParameters> acceptableParams;
|
||
for (size_t a = 0; a < aOptions.mPubKeyCredParams.Length(); ++a) {
|
||
// Let current be the currently selected element of
|
||
// mPubKeyCredParams.
|
||
|
||
// If current.type does not contain a PublicKeyCredentialType
|
||
// supported by this implementation, then stop processing current and move
|
||
// on to the next element in mPubKeyCredParams.
|
||
if (aOptions.mPubKeyCredParams[a].mType != PublicKeyCredentialType::Public_key) {
|
||
continue;
|
||
}
|
||
|
||
nsString algName;
|
||
if (NS_FAILED(CoseAlgorithmToWebCryptoId(aOptions.mPubKeyCredParams[a].mAlg,
|
||
algName))) {
|
||
continue;
|
||
}
|
||
|
||
if (!acceptableParams.AppendElement(aOptions.mPubKeyCredParams[a],
|
||
mozilla::fallible)){
|
||
promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
|
||
return promise.forget();
|
||
}
|
||
}
|
||
|
||
// If acceptableParams is empty and mPubKeyCredParams was not empty, cancel
|
||
// the timer started in step 2, reject promise with a DOMException whose name
|
||
// is "NotSupportedError", and terminate this algorithm.
|
||
if (acceptableParams.IsEmpty() && !aOptions.mPubKeyCredParams.IsEmpty()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
// If excludeList is undefined, set it to the empty list.
|
||
//
|
||
// If extensions was specified, process any extensions supported by this
|
||
// client platform, to produce the extension data that needs to be sent to the
|
||
// authenticator. If an error is encountered while processing an extension,
|
||
// skip that extension and do not produce any extension data for it. Call the
|
||
// result of this processing clientExtensions.
|
||
//
|
||
// Currently no extensions are supported
|
||
//
|
||
// Use attestationChallenge, callerOrigin and rpId, along with the token
|
||
// binding key associated with callerOrigin (if any), to create a ClientData
|
||
// structure representing this request. Choose a hash algorithm for hashAlg
|
||
// and compute the clientDataJSON and clientDataHash.
|
||
|
||
CryptoBuffer challenge;
|
||
if (!challenge.Assign(aOptions.mChallenge)) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsAutoCString clientDataJSON;
|
||
srv = AssembleClientData(origin, challenge,
|
||
NS_LITERAL_STRING("webauthn.create"),
|
||
aOptions.mExtensions, clientDataJSON);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
CryptoBuffer clientDataHash;
|
||
if (!clientDataHash.SetLength(SHA256_LENGTH, fallible)) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
srv = HashCString(hashService, clientDataJSON, clientDataHash);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsTArray<WebAuthnScopedCredential> excludeList;
|
||
for (const auto& s: aOptions.mExcludeCredentials) {
|
||
WebAuthnScopedCredential c;
|
||
CryptoBuffer cb;
|
||
cb.Assign(s.mId);
|
||
c.id() = cb;
|
||
excludeList.AppendElement(c);
|
||
}
|
||
|
||
if (!MaybeCreateBackgroundActor()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_OPERATION_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
// TODO: Add extension list building
|
||
nsTArray<WebAuthnExtension> extensions;
|
||
|
||
const auto& selection = aOptions.mAuthenticatorSelection;
|
||
const auto& attachment = selection.mAuthenticatorAttachment;
|
||
const AttestationConveyancePreference& attestation = aOptions.mAttestation;
|
||
|
||
// Does the RP require attachment == "platform"?
|
||
bool requirePlatformAttachment =
|
||
attachment.WasPassed() && attachment.Value() == AuthenticatorAttachment::Platform;
|
||
|
||
// Does the RP require user verification?
|
||
bool requireUserVerification =
|
||
selection.mUserVerification == UserVerificationRequirement::Required;
|
||
|
||
// Does the RP desire direct attestation? Indirect attestation is not
|
||
// implemented, and thus is equivilent to None.
|
||
bool requestDirectAttestation =
|
||
attestation == AttestationConveyancePreference::Direct;
|
||
|
||
// Create and forward authenticator selection criteria.
|
||
WebAuthnAuthenticatorSelection authSelection(selection.mRequireResidentKey,
|
||
requireUserVerification,
|
||
requirePlatformAttachment);
|
||
|
||
WebAuthnMakeCredentialInfo info(origin,
|
||
rpIdHash,
|
||
clientDataHash,
|
||
adjustedTimeout,
|
||
excludeList,
|
||
extensions,
|
||
authSelection,
|
||
requestDirectAttestation);
|
||
|
||
ListenForVisibilityEvents();
|
||
|
||
AbortSignal* signal = nullptr;
|
||
if (aSignal.WasPassed()) {
|
||
signal = &aSignal.Value();
|
||
Follow(signal);
|
||
}
|
||
|
||
MOZ_ASSERT(mTransaction.isNothing());
|
||
mTransaction = Some(WebAuthnTransaction(promise,
|
||
rpIdHash,
|
||
clientDataJSON,
|
||
requestDirectAttestation,
|
||
signal));
|
||
|
||
mChild->SendRequestRegister(mTransaction.ref().mId, info);
|
||
|
||
return promise.forget();
|
||
}
|
||
|
||
already_AddRefed<Promise>
|
||
WebAuthnManager::GetAssertion(const PublicKeyCredentialRequestOptions& aOptions,
|
||
const Optional<OwningNonNull<AbortSignal>>& aSignal)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
if (mTransaction.isSome()) {
|
||
CancelTransaction(NS_ERROR_ABORT);
|
||
}
|
||
|
||
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(mParent);
|
||
|
||
ErrorResult rv;
|
||
RefPtr<Promise> promise = Promise::Create(global, rv);
|
||
if (rv.Failed()) {
|
||
return nullptr;
|
||
}
|
||
|
||
// Abort the request if aborted flag is already set.
|
||
if (aSignal.WasPassed() && aSignal.Value().Aborted()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_ABORT_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsString origin;
|
||
nsCString rpId;
|
||
rv = GetOrigin(mParent, origin, rpId);
|
||
if (NS_WARN_IF(rv.Failed())) {
|
||
promise->MaybeReject(rv);
|
||
return promise.forget();
|
||
}
|
||
|
||
// If timeoutSeconds was specified, check if its value lies within a
|
||
// reasonable range as defined by the platform and if not, correct it to the
|
||
// closest value lying within that range.
|
||
|
||
uint32_t adjustedTimeout = 30000;
|
||
if (aOptions.mTimeout.WasPassed()) {
|
||
adjustedTimeout = aOptions.mTimeout.Value();
|
||
adjustedTimeout = std::max(15000u, adjustedTimeout);
|
||
adjustedTimeout = std::min(120000u, adjustedTimeout);
|
||
}
|
||
|
||
if (aOptions.mRpId.WasPassed()) {
|
||
// If rpId is specified, then invoke the procedure used for relaxing the
|
||
// same-origin restriction by setting the document.domain attribute, using
|
||
// rpId as the given value but without changing the current document’s
|
||
// domain. If no errors are thrown, set rpId to the value of host as
|
||
// computed by this procedure, and rpIdHash to the SHA-256 hash of rpId.
|
||
// Otherwise, reject promise with a DOMException whose name is
|
||
// "SecurityError", and terminate this algorithm.
|
||
|
||
if (NS_FAILED(RelaxSameOrigin(mParent, aOptions.mRpId.Value(), rpId))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
}
|
||
|
||
CryptoBuffer rpIdHash;
|
||
if (!rpIdHash.SetLength(SHA256_LENGTH, fallible)) {
|
||
promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsresult srv;
|
||
nsCOMPtr<nsICryptoHash> hashService =
|
||
do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &srv);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
srv = HashCString(hashService, rpId, rpIdHash);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
// Use assertionChallenge, callerOrigin and rpId, along with the token binding
|
||
// key associated with callerOrigin (if any), to create a ClientData structure
|
||
// representing this request. Choose a hash algorithm for hashAlg and compute
|
||
// the clientDataJSON and clientDataHash.
|
||
CryptoBuffer challenge;
|
||
if (!challenge.Assign(aOptions.mChallenge)) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsAutoCString clientDataJSON;
|
||
srv = AssembleClientData(origin, challenge, NS_LITERAL_STRING("webauthn.get"),
|
||
aOptions.mExtensions, clientDataJSON);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
CryptoBuffer clientDataHash;
|
||
if (!clientDataHash.SetLength(SHA256_LENGTH, fallible)) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
srv = HashCString(hashService, clientDataJSON, clientDataHash);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
nsTArray<WebAuthnScopedCredential> allowList;
|
||
for (const auto& s: aOptions.mAllowCredentials) {
|
||
if (s.mType == PublicKeyCredentialType::Public_key) {
|
||
WebAuthnScopedCredential c;
|
||
CryptoBuffer cb;
|
||
cb.Assign(s.mId);
|
||
c.id() = cb;
|
||
|
||
// Serialize transports.
|
||
if (s.mTransports.WasPassed()) {
|
||
uint8_t transports = 0;
|
||
for (const auto& t: s.mTransports.Value()) {
|
||
if (t == AuthenticatorTransport::Usb) {
|
||
transports |= U2F_AUTHENTICATOR_TRANSPORT_USB;
|
||
}
|
||
if (t == AuthenticatorTransport::Nfc) {
|
||
transports |= U2F_AUTHENTICATOR_TRANSPORT_NFC;
|
||
}
|
||
if (t == AuthenticatorTransport::Ble) {
|
||
transports |= U2F_AUTHENTICATOR_TRANSPORT_BLE;
|
||
}
|
||
}
|
||
c.transports() = transports;
|
||
}
|
||
|
||
allowList.AppendElement(c);
|
||
}
|
||
}
|
||
|
||
if (!MaybeCreateBackgroundActor()) {
|
||
promise->MaybeReject(NS_ERROR_DOM_OPERATION_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
// Does the RP require user verification?
|
||
bool requireUserVerification =
|
||
aOptions.mUserVerification == UserVerificationRequirement::Required;
|
||
|
||
// If extensions were specified, process any extensions supported by this
|
||
// client platform, to produce the extension data that needs to be sent to the
|
||
// authenticator. If an error is encountered while processing an extension,
|
||
// skip that extension and do not produce any extension data for it. Call the
|
||
// result of this processing clientExtensions.
|
||
nsTArray<WebAuthnExtension> extensions;
|
||
|
||
// <https://w3c.github.io/webauthn/#sctn-appid-extension>
|
||
if (aOptions.mExtensions.mAppid.WasPassed()) {
|
||
nsString appId(aOptions.mExtensions.mAppid.Value());
|
||
|
||
// Check that the appId value is allowed.
|
||
if (!EvaluateAppID(mParent, origin, U2FOperation::Sign, appId)) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
CryptoBuffer appIdHash;
|
||
if (!appIdHash.SetLength(SHA256_LENGTH, fallible)) {
|
||
promise->MaybeReject(NS_ERROR_OUT_OF_MEMORY);
|
||
return promise.forget();
|
||
}
|
||
|
||
// We need the SHA-256 hash of the appId.
|
||
nsresult srv = HashCString(hashService, NS_ConvertUTF16toUTF8(appId), appIdHash);
|
||
if (NS_WARN_IF(NS_FAILED(srv))) {
|
||
promise->MaybeReject(NS_ERROR_DOM_SECURITY_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
// Append the hash and send it to the backend.
|
||
extensions.AppendElement(WebAuthnExtensionAppId(appIdHash));
|
||
}
|
||
|
||
WebAuthnGetAssertionInfo info(origin,
|
||
rpIdHash,
|
||
clientDataHash,
|
||
adjustedTimeout,
|
||
allowList,
|
||
requireUserVerification,
|
||
extensions);
|
||
|
||
ListenForVisibilityEvents();
|
||
|
||
AbortSignal* signal = nullptr;
|
||
if (aSignal.WasPassed()) {
|
||
signal = &aSignal.Value();
|
||
Follow(signal);
|
||
}
|
||
|
||
MOZ_ASSERT(mTransaction.isNothing());
|
||
mTransaction = Some(WebAuthnTransaction(promise,
|
||
rpIdHash,
|
||
clientDataJSON,
|
||
false /* aDirectAttestation */,
|
||
signal));
|
||
|
||
mChild->SendRequestSign(mTransaction.ref().mId, info);
|
||
return promise.forget();
|
||
}
|
||
|
||
already_AddRefed<Promise>
|
||
WebAuthnManager::Store(const Credential& aCredential)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
if (mTransaction.isSome()) {
|
||
CancelTransaction(NS_ERROR_ABORT);
|
||
}
|
||
|
||
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(mParent);
|
||
|
||
ErrorResult rv;
|
||
RefPtr<Promise> promise = Promise::Create(global, rv);
|
||
if (rv.Failed()) {
|
||
return nullptr;
|
||
}
|
||
|
||
promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR);
|
||
return promise.forget();
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::FinishMakeCredential(const uint64_t& aTransactionId,
|
||
const WebAuthnMakeCredentialResult& aResult)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
// Check for a valid transaction.
|
||
if (mTransaction.isNothing() || mTransaction.ref().mId != aTransactionId) {
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer regData;
|
||
if (NS_WARN_IF(!regData.Assign(aResult.RegBuffer().Elements(),
|
||
aResult.RegBuffer().Length()))) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
mozilla::dom::CryptoBuffer aaguidBuf;
|
||
if (NS_WARN_IF(!aaguidBuf.SetCapacity(16, mozilla::fallible))) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
// FIDO U2F devices have no AAGUIDs, so they'll be all zeros until we add
|
||
// support for CTAP2 devices.
|
||
for (int i=0; i<16; i++) {
|
||
aaguidBuf.AppendElement(0x00, mozilla::fallible);
|
||
}
|
||
|
||
// Decompose the U2F registration packet
|
||
CryptoBuffer pubKeyBuf;
|
||
CryptoBuffer keyHandleBuf;
|
||
CryptoBuffer attestationCertBuf;
|
||
CryptoBuffer signatureBuf;
|
||
|
||
// Only handles attestation cert chains of length=1.
|
||
nsresult rv = U2FDecomposeRegistrationResponse(regData, pubKeyBuf, keyHandleBuf,
|
||
attestationCertBuf, signatureBuf);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
MOZ_ASSERT(keyHandleBuf.Length() <= 0xFFFF);
|
||
|
||
nsAutoString keyHandleBase64Url;
|
||
rv = keyHandleBuf.ToJwkBase64(keyHandleBase64Url);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer clientDataBuf;
|
||
if (!clientDataBuf.Assign(mTransaction.ref().mClientData)) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer rpIdHashBuf;
|
||
if (!rpIdHashBuf.Assign(mTransaction.ref().mRpIdHash)) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
// Construct the public key object
|
||
CryptoBuffer pubKeyObj;
|
||
rv = CBOREncodePublicKeyObj(pubKeyBuf, pubKeyObj);
|
||
if (NS_FAILED(rv)) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
// During create credential, counter is always 0 for U2F
|
||
// See https://github.com/w3c/webauthn/issues/507
|
||
mozilla::dom::CryptoBuffer counterBuf;
|
||
if (NS_WARN_IF(!counterBuf.SetCapacity(4, mozilla::fallible))) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
counterBuf.AppendElement(0x00, mozilla::fallible);
|
||
counterBuf.AppendElement(0x00, mozilla::fallible);
|
||
counterBuf.AppendElement(0x00, mozilla::fallible);
|
||
counterBuf.AppendElement(0x00, mozilla::fallible);
|
||
|
||
// Construct the Attestation Data, which slots into the end of the
|
||
// Authentication Data buffer.
|
||
CryptoBuffer attDataBuf;
|
||
rv = AssembleAttestationData(aaguidBuf, keyHandleBuf, pubKeyObj, attDataBuf);
|
||
if (NS_FAILED(rv)) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
mozilla::dom::CryptoBuffer authDataBuf;
|
||
rv = AssembleAuthenticatorData(rpIdHashBuf, FLAG_TUP, counterBuf, attDataBuf,
|
||
authDataBuf);
|
||
if (NS_FAILED(rv)) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
// Direct attestation might have been requested by the RP. This will
|
||
// be true only if the user consented via the permission UI.
|
||
CryptoBuffer attObj;
|
||
if (aResult.DirectAttestationPermitted()) {
|
||
rv = CBOREncodeFidoU2FAttestationObj(authDataBuf, attestationCertBuf,
|
||
signatureBuf, attObj);
|
||
} else {
|
||
rv = CBOREncodeNoneAttestationObj(authDataBuf, attObj);
|
||
}
|
||
|
||
if (NS_FAILED(rv)) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
// Create a new PublicKeyCredential object and populate its fields with the
|
||
// values returned from the authenticator as well as the clientDataJSON
|
||
// computed earlier.
|
||
RefPtr<AuthenticatorAttestationResponse> attestation =
|
||
new AuthenticatorAttestationResponse(mParent);
|
||
attestation->SetClientDataJSON(clientDataBuf);
|
||
attestation->SetAttestationObject(attObj);
|
||
|
||
RefPtr<PublicKeyCredential> credential =
|
||
new PublicKeyCredential(mParent);
|
||
credential->SetId(keyHandleBase64Url);
|
||
credential->SetType(NS_LITERAL_STRING("public-key"));
|
||
credential->SetRawId(keyHandleBuf);
|
||
credential->SetResponse(attestation);
|
||
|
||
mTransaction.ref().mPromise->MaybeResolve(credential);
|
||
ClearTransaction();
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::FinishGetAssertion(const uint64_t& aTransactionId,
|
||
const WebAuthnGetAssertionResult& aResult)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
// Check for a valid transaction.
|
||
if (mTransaction.isNothing() || mTransaction.ref().mId != aTransactionId) {
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer tokenSignatureData;
|
||
if (NS_WARN_IF(!tokenSignatureData.Assign(aResult.SigBuffer().Elements(),
|
||
aResult.SigBuffer().Length()))) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer clientDataBuf;
|
||
if (!clientDataBuf.Assign(mTransaction.ref().mClientData)) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer rpIdHashBuf;
|
||
if (!rpIdHashBuf.Assign(aResult.RpIdHash())) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer signatureBuf;
|
||
CryptoBuffer counterBuf;
|
||
uint8_t flags = 0;
|
||
nsresult rv = U2FDecomposeSignResponse(tokenSignatureData, flags, counterBuf,
|
||
signatureBuf);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer attestationDataBuf;
|
||
CryptoBuffer authenticatorDataBuf;
|
||
rv = AssembleAuthenticatorData(rpIdHashBuf, FLAG_TUP, counterBuf,
|
||
/* deliberately empty */ attestationDataBuf,
|
||
authenticatorDataBuf);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
CryptoBuffer credentialBuf;
|
||
if (!credentialBuf.Assign(aResult.CredentialID())) {
|
||
RejectTransaction(NS_ERROR_OUT_OF_MEMORY);
|
||
return;
|
||
}
|
||
|
||
nsAutoString credentialBase64Url;
|
||
rv = credentialBuf.ToJwkBase64(credentialBase64Url);
|
||
if (NS_WARN_IF(NS_FAILED(rv))) {
|
||
RejectTransaction(rv);
|
||
return;
|
||
}
|
||
|
||
// If any authenticator returns success:
|
||
|
||
// Create a new PublicKeyCredential object named value and populate its fields
|
||
// with the values returned from the authenticator as well as the
|
||
// clientDataJSON computed earlier.
|
||
RefPtr<AuthenticatorAssertionResponse> assertion =
|
||
new AuthenticatorAssertionResponse(mParent);
|
||
assertion->SetClientDataJSON(clientDataBuf);
|
||
assertion->SetAuthenticatorData(authenticatorDataBuf);
|
||
assertion->SetSignature(signatureBuf);
|
||
|
||
RefPtr<PublicKeyCredential> credential = new PublicKeyCredential(mParent);
|
||
credential->SetId(credentialBase64Url);
|
||
credential->SetType(NS_LITERAL_STRING("public-key"));
|
||
credential->SetRawId(credentialBuf);
|
||
credential->SetResponse(assertion);
|
||
|
||
// Forward client extension results.
|
||
for (auto& ext: aResult.Extensions()) {
|
||
if (ext.type() == WebAuthnExtensionResult::TWebAuthnExtensionResultAppId) {
|
||
bool appid = ext.get_WebAuthnExtensionResultAppId().AppId();
|
||
credential->SetClientExtensionResultAppId(appid);
|
||
}
|
||
}
|
||
|
||
mTransaction.ref().mPromise->MaybeResolve(credential);
|
||
ClearTransaction();
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::RequestAborted(const uint64_t& aTransactionId,
|
||
const nsresult& aError)
|
||
{
|
||
MOZ_ASSERT(NS_IsMainThread());
|
||
|
||
if (mTransaction.isSome() && mTransaction.ref().mId == aTransactionId) {
|
||
RejectTransaction(aError);
|
||
}
|
||
}
|
||
|
||
void
|
||
WebAuthnManager::Abort()
|
||
{
|
||
CancelTransaction(NS_ERROR_DOM_ABORT_ERR);
|
||
}
|
||
|
||
}
|
||
}
|