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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 "RemoteLazyInputStreamParent.h"
#include "RemoteLazyInputStreamStorage.h"
#include "mozilla/InputStreamLengthHelper.h"
#include "mozilla/ipc/Endpoint.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/ipc/InputStreamParams.h"
#include "mozilla/ipc/ProtocolUtils.h"
#include "nsStreamUtils.h"
#include "nsServiceManagerUtils.h"
#include "nsNetCID.h"
namespace mozilla {
extern mozilla::LazyLogModule gRemoteLazyStreamLog;
RemoteLazyInputStreamParent::RemoteLazyInputStreamParent(const nsID& aID)
: mID(aID) {
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->ActorCreated(mID);
}
}
void RemoteLazyInputStreamParent::ActorDestroy(
IProtocol::ActorDestroyReason aReason) {
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->ActorDestroyed(mID);
}
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvClone(
mozilla::ipc::Endpoint<PRemoteLazyInputStreamParent>&& aCloneEndpoint) {
if (!aCloneEndpoint.IsValid()) {
return IPC_FAIL(this, "Unexpected invalid endpoint in RecvClone");
}
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Debug,
("Parent::RecvClone %s", nsIDToCString(mID).get()));
auto* newActor = new RemoteLazyInputStreamParent(mID);
aCloneEndpoint.Bind(newActor);
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvStreamNeeded(
uint64_t aStart, uint64_t aLength, StreamNeededResolver&& aResolver) {
nsCOMPtr<nsIInputStream> stream;
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->GetStream(mID, aStart, aLength, getter_AddRefs(stream));
}
if (!stream) {
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Warning,
("Parent::RecvStreamNeeded not available! %s",
nsIDToCString(mID).get()));
aResolver(Nothing());
return IPC_OK();
}
Maybe<IPCStream> ipcStream;
if (NS_WARN_IF(!SerializeIPCStream(stream.forget(), ipcStream,
/* aAllowLazy */ false))) {
return IPC_FAIL(this, "IPCStream serialization failed!");
}
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
("Parent::RecvStreamNeeded resolve %s", nsIDToCString(mID).get()));
aResolver(ipcStream);
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvLengthNeeded(
LengthNeededResolver&& aResolver) {
nsCOMPtr<nsIInputStream> stream;
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->GetStream(mID, 0, UINT64_MAX, getter_AddRefs(stream));
}
if (!stream) {
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Warning,
("Parent::RecvLengthNeeded not available! %s",
nsIDToCString(mID).get()));
aResolver(-1);
return IPC_OK();
}
int64_t length = -1;
if (InputStreamLengthHelper::GetSyncLength(stream, &length)) {
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
("Parent::RecvLengthNeeded sync resolve %" PRId64 "! %s", length,
nsIDToCString(mID).get()));
aResolver(length);
return IPC_OK();
}
InputStreamLengthHelper::GetAsyncLength(
stream, [aResolver, id = mID](int64_t aLength) {
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
("Parent::RecvLengthNeeded async resolve %" PRId64 "! %s",
aLength, nsIDToCString(id).get()));
aResolver(aLength);
});
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvGoodbye() {
MOZ_LOG(gRemoteLazyStreamLog, LogLevel::Verbose,
("Parent::RecvGoodbye! %s", nsIDToCString(mID).get()));
Close();
return IPC_OK();
}
} // namespace mozilla
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