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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/. */
#ifndef mozilla_dom_WebAuthnTransactionParent_h
#define mozilla_dom_WebAuthnTransactionParent_h
#include "mozilla/RandomNum.h"
#include "mozilla/dom/PWebAuthnTransactionParent.h"
#include "mozilla/dom/WebAuthnPromiseHolder.h"
#include "nsIWebAuthnService.h"
/*
* Parent process IPC implementation for WebAuthn.
*/
namespace mozilla::dom {
class WebAuthnRegisterPromiseHolder;
class WebAuthnSignPromiseHolder;
class WebAuthnTransactionParent final : public PWebAuthnTransactionParent {
NS_INLINE_DECL_REFCOUNTING(WebAuthnTransactionParent, override);
public:
WebAuthnTransactionParent() = default;
mozilla::ipc::IPCResult RecvRequestRegister(
const WebAuthnMakeCredentialInfo& aTransactionInfo,
RequestRegisterResolver&& aResolver);
mozilla::ipc::IPCResult RecvRequestSign(
const WebAuthnGetAssertionInfo& aTransactionInfo,
RequestSignResolver&& aResolver);
mozilla::ipc::IPCResult RecvRequestCancel();
mozilla::ipc::IPCResult RecvRequestIsUVPAA(
RequestIsUVPAAResolver&& aResolver);
mozilla::ipc::IPCResult RecvDestroyMe();
virtual void ActorDestroy(ActorDestroyReason aWhy) override;
private:
~WebAuthnTransactionParent() = default;
void CompleteTransaction();
void DisconnectTransaction();
nsCOMPtr<nsIWebAuthnService> mWebAuthnService;
Maybe<uint64_t> mTransactionId;
MozPromiseRequestHolder<WebAuthnRegisterPromise> mRegisterPromiseRequest;
MozPromiseRequestHolder<WebAuthnSignPromise> mSignPromiseRequest;
// Generates a probabilistically unique ID for the new transaction. IDs are 53
// bits, as they are used in javascript. We use a random value if possible,
// otherwise a counter.
static uint64_t NextId() {
static uint64_t counter = 0;
Maybe<uint64_t> rand = mozilla::RandomUint64();
uint64_t id =
rand.valueOr(++counter) & UINT64_C(0x1fffffffffffff); // 2^53 - 1
// The transaction ID 0 is reserved.
return id ? id : 1;
}
};
} // namespace mozilla::dom
#endif // mozilla_dom_WebAuthnTransactionParent_h
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