123 lines
4 KiB
C++
123 lines
4 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "RemoteLazyInputStreamParent.h"
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#include "RemoteLazyInputStreamStorage.h"
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#include "mozilla/InputStreamLengthHelper.h"
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#include "mozilla/ipc/Endpoint.h"
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#include "mozilla/ipc/IPCStreamUtils.h"
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#include "mozilla/ipc/InputStreamParams.h"
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#include "mozilla/ipc/ProtocolUtils.h"
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#include "nsStreamUtils.h"
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#include "nsServiceManagerUtils.h"
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#include "nsNetCID.h"
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namespace mozilla {
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extern mozilla::LazyLogModule gRemoteLazyStreamLog;
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RemoteLazyInputStreamParent::RemoteLazyInputStreamParent(const nsID& aID)
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: mID(aID) {
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auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
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if (storage) {
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storage->ActorCreated(mID);
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}
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}
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void RemoteLazyInputStreamParent::ActorDestroy(
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IProtocol::ActorDestroyReason aReason) {
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auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
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if (storage) {
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storage->ActorDestroyed(mID);
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}
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}
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mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvClone(
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mozilla::ipc::Endpoint<PRemoteLazyInputStreamParent>&& aCloneEndpoint) {
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if (!aCloneEndpoint.IsValid()) {
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return IPC_FAIL(this, "Unexpected invalid endpoint in RecvClone");
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}
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Debug,
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("Parent::RecvClone %s", nsIDToCString(mID).get()));
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auto* newActor = new RemoteLazyInputStreamParent(mID);
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aCloneEndpoint.Bind(newActor);
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return IPC_OK();
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}
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mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvStreamNeeded(
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uint64_t aStart, uint64_t aLength, StreamNeededResolver&& aResolver) {
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nsCOMPtr<nsIInputStream> stream;
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auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
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if (storage) {
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storage->GetStream(mID, aStart, aLength, getter_AddRefs(stream));
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}
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if (!stream) {
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Warning,
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("Parent::RecvStreamNeeded not available! %s",
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nsIDToCString(mID).get()));
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aResolver(Nothing());
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return IPC_OK();
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}
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Maybe<IPCStream> ipcStream;
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if (NS_WARN_IF(!SerializeIPCStream(stream.forget(), ipcStream,
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/* aAllowLazy */ false))) {
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return IPC_FAIL(this, "IPCStream serialization failed!");
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}
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
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("Parent::RecvStreamNeeded resolve %s", nsIDToCString(mID).get()));
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aResolver(ipcStream);
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return IPC_OK();
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}
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mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvLengthNeeded(
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LengthNeededResolver&& aResolver) {
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nsCOMPtr<nsIInputStream> stream;
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auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
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if (storage) {
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storage->GetStream(mID, 0, UINT64_MAX, getter_AddRefs(stream));
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}
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if (!stream) {
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Warning,
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("Parent::RecvLengthNeeded not available! %s",
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nsIDToCString(mID).get()));
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aResolver(-1);
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return IPC_OK();
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}
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int64_t length = -1;
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if (InputStreamLengthHelper::GetSyncLength(stream, &length)) {
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
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("Parent::RecvLengthNeeded sync resolve %" PRId64 "! %s", length,
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nsIDToCString(mID).get()));
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aResolver(length);
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return IPC_OK();
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}
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InputStreamLengthHelper::GetAsyncLength(
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stream, [aResolver, id = mID](int64_t aLength) {
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
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("Parent::RecvLengthNeeded async resolve %" PRId64 "! %s",
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aLength, nsIDToCString(id).get()));
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aResolver(aLength);
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});
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return IPC_OK();
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}
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mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvGoodbye() {
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MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
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("Parent::RecvGoodbye! %s", nsIDToCString(mID).get()));
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Close();
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return IPC_OK();
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}
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} // namespace mozilla
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