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/* -*- 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 "AuthrsBridge_ffi.h"
#include "mozilla/Base64.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/dom/AuthenticatorAttestationResponse.h"
#include "mozilla/dom/WebAuthenticationBinding.h"
namespace mozilla::dom {
NS_IMPL_CYCLE_COLLECTION_CLASS(AuthenticatorAttestationResponse)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN_INHERITED(
AuthenticatorAttestationResponse, AuthenticatorResponse)
tmp->mAttestationObjectCachedObj = nullptr;
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN_INHERITED(AuthenticatorAttestationResponse,
AuthenticatorResponse)
NS_IMPL_CYCLE_COLLECTION_TRACE_PRESERVED_WRAPPER
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mAttestationObjectCachedObj)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INHERITED(
AuthenticatorAttestationResponse, AuthenticatorResponse)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_ADDREF_INHERITED(AuthenticatorAttestationResponse,
AuthenticatorResponse)
NS_IMPL_RELEASE_INHERITED(AuthenticatorAttestationResponse,
AuthenticatorResponse)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(AuthenticatorAttestationResponse)
NS_INTERFACE_MAP_END_INHERITING(AuthenticatorResponse)
AuthenticatorAttestationResponse::AuthenticatorAttestationResponse(
nsPIDOMWindowInner* aParent)
: AuthenticatorResponse(aParent), mAttestationObjectCachedObj(nullptr) {
mozilla::HoldJSObjects(this);
}
AuthenticatorAttestationResponse::~AuthenticatorAttestationResponse() {
mozilla::DropJSObjects(this);
}
JSObject* AuthenticatorAttestationResponse::WrapObject(
JSContext* aCx, JS::Handle<JSObject*> aGivenProto) {
return AuthenticatorAttestationResponse_Binding::Wrap(aCx, this, aGivenProto);
}
void AuthenticatorAttestationResponse::GetAttestationObject(
JSContext* aCx, JS::MutableHandle<JSObject*> aValue, ErrorResult& aRv) {
if (!mAttestationObjectCachedObj) {
mAttestationObjectCachedObj =
ArrayBuffer::Create(aCx, mAttestationObject, aRv);
if (aRv.Failed()) {
return;
}
}
aValue.set(mAttestationObjectCachedObj);
}
void AuthenticatorAttestationResponse::SetAttestationObject(
const nsTArray<uint8_t>& aBuffer) {
mAttestationObject.Assign(aBuffer);
}
void AuthenticatorAttestationResponse::GetTransports(
nsTArray<nsString>& aTransports) {
aTransports.Assign(mTransports);
}
void AuthenticatorAttestationResponse::SetTransports(
const nsTArray<nsString>& aTransports) {
mTransports.Assign(aTransports);
}
nsresult AuthenticatorAttestationResponse::GetAuthenticatorDataBytes(
nsTArray<uint8_t>& aAuthenticatorData) {
if (!mAttestationObjectParsed) {
nsresult rv = authrs_webauthn_att_obj_constructor(
mAttestationObject, /* anonymize */ false,
getter_AddRefs(mAttestationObjectParsed));
if (NS_FAILED(rv)) {
return rv;
}
}
nsresult rv =
mAttestationObjectParsed->GetAuthenticatorData(aAuthenticatorData);
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
void AuthenticatorAttestationResponse::GetAuthenticatorData(
JSContext* aCx, JS::MutableHandle<JSObject*> aValue, ErrorResult& aRv) {
nsTArray<uint8_t> authenticatorData;
nsresult rv = GetAuthenticatorDataBytes(authenticatorData);
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return;
}
JS::Heap<JSObject*> buffer(ArrayBuffer::Create(aCx, authenticatorData, aRv));
if (aRv.Failed()) {
return;
}
aValue.set(buffer);
}
nsresult AuthenticatorAttestationResponse::GetPublicKeyBytes(
nsTArray<uint8_t>& aPublicKeyBytes) {
if (!mAttestationObjectParsed) {
nsresult rv = authrs_webauthn_att_obj_constructor(
mAttestationObject, /* anonymize */ false,
getter_AddRefs(mAttestationObjectParsed));
if (NS_FAILED(rv)) {
return rv;
}
}
nsresult rv = mAttestationObjectParsed->GetPublicKey(aPublicKeyBytes);
if (NS_FAILED(rv)) {
return rv;
}
return NS_OK;
}
void AuthenticatorAttestationResponse::GetPublicKey(
JSContext* aCx, JS::MutableHandle<JSObject*> aValue, ErrorResult& aRv) {
nsTArray<uint8_t> publicKey;
nsresult rv = GetPublicKeyBytes(publicKey);
if (NS_FAILED(rv)) {
if (rv == NS_ERROR_NOT_AVAILABLE) {
aValue.set(nullptr);
} else {
aRv.Throw(NS_ERROR_OUT_OF_MEMORY);
}
return;
}
JS::Heap<JSObject*> buffer(ArrayBuffer::Create(aCx, publicKey, aRv));
if (aRv.Failed()) {
return;
}
aValue.set(buffer);
}
COSEAlgorithmIdentifier AuthenticatorAttestationResponse::GetPublicKeyAlgorithm(
ErrorResult& aRv) {
if (!mAttestationObjectParsed) {
nsresult rv = authrs_webauthn_att_obj_constructor(
mAttestationObject, false, getter_AddRefs(mAttestationObjectParsed));
if (NS_FAILED(rv)) {
aRv.Throw(rv);
return 0;
}
}
COSEAlgorithmIdentifier alg;
mAttestationObjectParsed->GetPublicKeyAlgorithm(&alg);
return alg;
}
void AuthenticatorAttestationResponse::ToJSON(
AuthenticatorAttestationResponseJSON& aJSON, ErrorResult& aError) {
nsAutoCString clientDataJSONBase64;
nsresult rv = Base64URLEncode(
mClientDataJSON.Length(),
reinterpret_cast<const uint8_t*>(mClientDataJSON.get()),
mozilla::Base64URLEncodePaddingPolicy::Omit, clientDataJSONBase64);
// This will only fail if the length is so long that it overflows 32-bits
// when calculating the encoded size.
if (NS_FAILED(rv)) {
aError.ThrowDataError("clientDataJSON too long");
return;
}
aJSON.mClientDataJSON.Assign(NS_ConvertUTF8toUTF16(clientDataJSONBase64));
nsTArray<uint8_t> authenticatorData;
rv = GetAuthenticatorDataBytes(authenticatorData);
if (NS_FAILED(rv)) {
aError.ThrowUnknownError("could not get authenticatorData");
return;
}
nsAutoCString authenticatorDataBase64;
rv = Base64URLEncode(authenticatorData.Length(), authenticatorData.Elements(),
mozilla::Base64URLEncodePaddingPolicy::Omit,
authenticatorDataBase64);
if (NS_FAILED(rv)) {
aError.ThrowDataError("authenticatorData too long");
return;
}
aJSON.mAuthenticatorData.Assign(
NS_ConvertUTF8toUTF16(authenticatorDataBase64));
if (!aJSON.mTransports.Assign(mTransports, mozilla::fallible)) {
aError.Throw(NS_ERROR_OUT_OF_MEMORY);
return;
}
nsTArray<uint8_t> publicKeyBytes;
rv = GetPublicKeyBytes(publicKeyBytes);
if (NS_SUCCEEDED(rv)) {
nsAutoCString publicKeyBytesBase64;
rv = Base64URLEncode(publicKeyBytes.Length(), publicKeyBytes.Elements(),
mozilla::Base64URLEncodePaddingPolicy::Omit,
publicKeyBytesBase64);
if (NS_FAILED(rv)) {
aError.ThrowDataError("publicKey too long");
return;
}
aJSON.mPublicKey.Construct(NS_ConvertUTF8toUTF16(publicKeyBytesBase64));
} else if (rv != NS_ERROR_NOT_AVAILABLE) {
aError.ThrowUnknownError("could not get publicKey");
return;
}
COSEAlgorithmIdentifier publicKeyAlgorithm = GetPublicKeyAlgorithm(aError);
if (aError.Failed()) {
aError.ThrowUnknownError("could not get publicKeyAlgorithm");
return;
}
aJSON.mPublicKeyAlgorithm = publicKeyAlgorithm;
nsAutoCString attestationObjectBase64;
rv = Base64URLEncode(
mAttestationObject.Length(), mAttestationObject.Elements(),
mozilla::Base64URLEncodePaddingPolicy::Omit, attestationObjectBase64);
if (NS_FAILED(rv)) {
aError.ThrowDataError("attestationObject too long");
return;
}
aJSON.mAttestationObject.Assign(
NS_ConvertUTF8toUTF16(attestationObjectBase64));
}
} // namespace mozilla::dom
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