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Diffstat (limited to 'dom/webauthn/WebAuthnTransactionChild.cpp')
-rw-r--r-- | dom/webauthn/WebAuthnTransactionChild.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/dom/webauthn/WebAuthnTransactionChild.cpp b/dom/webauthn/WebAuthnTransactionChild.cpp new file mode 100644 index 0000000000..168c4e97b0 --- /dev/null +++ b/dom/webauthn/WebAuthnTransactionChild.cpp @@ -0,0 +1,89 @@ +/* -*- 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 "mozilla/dom/WebAuthnTransactionChild.h" + +namespace mozilla { +namespace dom { + +WebAuthnTransactionChild::WebAuthnTransactionChild( + WebAuthnManagerBase* aManager) + : mManager(aManager) { + MOZ_ASSERT(aManager); + + // Retain a reference so the task object isn't deleted without IPDL's + // knowledge. The reference will be released by + // mozilla::ipc::BackgroundChildImpl::DeallocPWebAuthnTransactionChild. + NS_ADDREF_THIS(); +} + +mozilla::ipc::IPCResult WebAuthnTransactionChild::RecvConfirmRegister( + const uint64_t& aTransactionId, + const WebAuthnMakeCredentialResult& aResult) { + if (NS_WARN_IF(!mManager)) { + return IPC_FAIL_NO_REASON(this); + } + + // We don't own the reference to mManager. We need to prevent its refcount + // going to 0 while we call anything that can reach the call to + // StopListeningForVisibilityEvents in WebAuthnManager::ClearTransaction + // (often via WebAuthnManager::RejectTransaction). + RefPtr<WebAuthnManagerBase> kungFuDeathGrip(mManager); + kungFuDeathGrip->FinishMakeCredential(aTransactionId, aResult); + return IPC_OK(); +} + +mozilla::ipc::IPCResult WebAuthnTransactionChild::RecvConfirmSign( + const uint64_t& aTransactionId, const WebAuthnGetAssertionResult& aResult) { + if (NS_WARN_IF(!mManager)) { + return IPC_FAIL_NO_REASON(this); + } + + // We don't own the reference to mManager. We need to prevent its refcount + // going to 0 while we call anything that can reach the call to + // StopListeningForVisibilityEvents in WebAuthnManager::ClearTransaction + // (often via WebAuthnManager::RejectTransaction). + RefPtr<WebAuthnManagerBase> kungFuDeathGrip(mManager); + kungFuDeathGrip->FinishGetAssertion(aTransactionId, aResult); + return IPC_OK(); +} + +mozilla::ipc::IPCResult WebAuthnTransactionChild::RecvAbort( + const uint64_t& aTransactionId, const nsresult& aError) { + if (NS_WARN_IF(!mManager)) { + return IPC_FAIL_NO_REASON(this); + } + + // We don't own the reference to mManager. We need to prevent its refcount + // going to 0 while we call anything that can reach the call to + // StopListeningForVisibilityEvents in WebAuthnManager::ClearTransaction + // (often via WebAuthnManager::RejectTransaction). + RefPtr<WebAuthnManagerBase> kungFuDeathGrip(mManager); + kungFuDeathGrip->RequestAborted(aTransactionId, aError); + return IPC_OK(); +} + +void WebAuthnTransactionChild::ActorDestroy(ActorDestroyReason why) { + // Called by either a __delete__ message from the parent, or when the + // channel disconnects. Clear out the child actor reference to be sure. + if (mManager) { + mManager->ActorDestroyed(); + mManager = nullptr; + } +} + +void WebAuthnTransactionChild::Disconnect() { + mManager = nullptr; + + // The WebAuthnManager released us, but we're going to be held alive by the + // IPC layer. The parent will explicitly destroy us via Send__delete__(), + // after receiving the DestroyMe message. + + SendDestroyMe(); +} + +} // namespace dom +} // namespace mozilla |