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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 "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/InputStreamLengthHelper.h"
#include "nsContentUtils.h"
#include "RemoteLazyInputStreamStorage.h"
namespace mozilla {
template <typename M>
/* static */
already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create(nsIInputStream* aInputStream,
uint64_t aSize, uint64_t aChildID,
nsresult* aRv, M* aManager) {
MOZ_ASSERT(aInputStream);
MOZ_ASSERT(aRv);
nsID id;
*aRv = nsContentUtils::GenerateUUIDInPlace(id);
if (NS_WARN_IF(NS_FAILED(*aRv))) {
return nullptr;
}
auto storageOrErr = RemoteLazyInputStreamStorage::Get();
if (NS_WARN_IF(storageOrErr.isErr())) {
*aRv = storageOrErr.unwrapErr();
return nullptr;
}
auto storage = storageOrErr.unwrap();
storage->AddStream(aInputStream, id, aSize, aChildID);
RefPtr<RemoteLazyInputStreamParent> parent =
new RemoteLazyInputStreamParent(id, aSize, aManager);
return parent.forget();
}
/* static */
already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create(const nsID& aID, uint64_t aSize,
PBackgroundParent* aManager) {
RefPtr<RemoteLazyInputStreamParent> actor =
new RemoteLazyInputStreamParent(aID, aSize, aManager);
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
actor->mCallback = storage->TakeCallback(aID);
return actor.forget();
}
return nullptr;
}
template already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create<mozilla::ipc::PBackgroundParent>(
nsIInputStream*, uint64_t, uint64_t, nsresult*,
mozilla::ipc::PBackgroundParent*);
/* static */
already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create(const nsID& aID, uint64_t aSize,
net::SocketProcessParent* aManager) {
RefPtr<RemoteLazyInputStreamParent> actor =
new RemoteLazyInputStreamParent(aID, aSize, aManager);
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
actor->mCallback = storage->TakeCallback(aID);
return actor.forget();
}
return nullptr;
}
template already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create<mozilla::net::SocketProcessParent>(
nsIInputStream*, uint64_t, uint64_t, nsresult*,
mozilla::net::SocketProcessParent*);
template already_AddRefed<RemoteLazyInputStreamParent>
RemoteLazyInputStreamParent::Create<dom::ContentParent>(nsIInputStream*,
uint64_t, uint64_t,
nsresult*,
dom::ContentParent*);
RemoteLazyInputStreamParent::RemoteLazyInputStreamParent(
const nsID& aID, uint64_t aSize, dom::ContentParent* aManager)
: mID(aID),
mSize(aSize),
mContentManager(aManager),
mPBackgroundManager(nullptr),
mSocketProcessManager(nullptr),
mMigrating(false) {}
RemoteLazyInputStreamParent::RemoteLazyInputStreamParent(
const nsID& aID, uint64_t aSize, PBackgroundParent* aManager)
: mID(aID),
mSize(aSize),
mContentManager(nullptr),
mPBackgroundManager(aManager),
mSocketProcessManager(nullptr),
mMigrating(false) {}
RemoteLazyInputStreamParent::RemoteLazyInputStreamParent(
const nsID& aID, uint64_t aSize, net::SocketProcessParent* aManager)
: mID(aID),
mSize(aSize),
mContentManager(nullptr),
mPBackgroundManager(nullptr),
mSocketProcessManager(aManager),
mMigrating(false) {}
void RemoteLazyInputStreamParent::ActorDestroy(
IProtocol::ActorDestroyReason aReason) {
MOZ_ASSERT(mContentManager || mPBackgroundManager || mSocketProcessManager);
mContentManager = nullptr;
mPBackgroundManager = nullptr;
mSocketProcessManager = nullptr;
RefPtr<RemoteLazyInputStreamParentCallback> callback;
mCallback.swap(callback);
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (mMigrating) {
if (callback && storage) {
// We need to assign this callback to the next parent.
storage->StoreCallback(mID, callback);
}
return;
}
if (storage) {
storage->ForgetStream(mID);
}
if (callback) {
callback->ActorDestroyed(mID);
}
}
void RemoteLazyInputStreamParent::SetCallback(
RemoteLazyInputStreamParentCallback* aCallback) {
MOZ_ASSERT(aCallback);
MOZ_ASSERT(!mCallback);
mCallback = aCallback;
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvStreamNeeded() {
MOZ_ASSERT(mContentManager || mPBackgroundManager || mSocketProcessManager);
nsCOMPtr<nsIInputStream> stream;
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->GetStream(mID, 0, mSize, getter_AddRefs(stream));
}
if (!stream) {
if (!SendStreamReady(Nothing())) {
return IPC_FAIL(this, "SendStreamReady failed");
}
return IPC_OK();
}
mozilla::ipc::AutoIPCStream ipcStream;
bool ok = false;
if (mContentManager) {
MOZ_ASSERT(NS_IsMainThread());
ok = ipcStream.Serialize(stream, mContentManager);
} else if (mPBackgroundManager) {
ok = ipcStream.Serialize(stream, mPBackgroundManager);
} else {
MOZ_ASSERT(mSocketProcessManager);
ok = ipcStream.Serialize(stream, mSocketProcessManager);
}
if (NS_WARN_IF(!ok)) {
return IPC_FAIL(this, "SendStreamReady failed");
}
if (!SendStreamReady(Some(ipcStream.TakeValue()))) {
return IPC_FAIL(this, "SendStreamReady failed");
}
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvLengthNeeded() {
MOZ_ASSERT(mContentManager || mPBackgroundManager || mSocketProcessManager);
nsCOMPtr<nsIInputStream> stream;
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
if (storage) {
storage->GetStream(mID, 0, mSize, getter_AddRefs(stream));
}
if (!stream) {
if (!SendLengthReady(-1)) {
return IPC_FAIL(this, "SendLengthReady failed");
}
return IPC_OK();
}
int64_t length = -1;
if (InputStreamLengthHelper::GetSyncLength(stream, &length)) {
Unused << SendLengthReady(length);
return IPC_OK();
}
RefPtr<RemoteLazyInputStreamParent> self = this;
InputStreamLengthHelper::GetAsyncLength(stream, [self](int64_t aLength) {
if (self->mContentManager || self->mPBackgroundManager ||
self->mSocketProcessManager) {
Unused << self->SendLengthReady(aLength);
}
});
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::RecvClose() {
MOZ_ASSERT(mContentManager || mPBackgroundManager || mSocketProcessManager);
Unused << Send__delete__(this);
return IPC_OK();
}
mozilla::ipc::IPCResult RemoteLazyInputStreamParent::Recv__delete__() {
MOZ_ASSERT(mContentManager || mPBackgroundManager || mSocketProcessManager);
mMigrating = true;
return IPC_OK();
}
bool RemoteLazyInputStreamParent::HasValidStream() const {
auto storage = RemoteLazyInputStreamStorage::Get().unwrapOr(nullptr);
return storage ? storage->HasStream(mID) : false;
}
} // namespace mozilla
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