gecko-dev/dom/file/ipc/TemporaryIPCBlobChild.cpp

95 lines
2.3 KiB
C++

/* -*- 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 "TemporaryIPCBlobChild.h"
#include "mozilla/dom/MutableBlobStorage.h"
#include <private/pprio.h>
namespace mozilla {
namespace dom {
TemporaryIPCBlobChild::TemporaryIPCBlobChild(MutableBlobStorage* aStorage)
: mMutableBlobStorage(aStorage)
, mActive(true)
{
MOZ_ASSERT(aStorage);
}
TemporaryIPCBlobChild::~TemporaryIPCBlobChild()
{}
mozilla::ipc::IPCResult
TemporaryIPCBlobChild::RecvFileDesc(const FileDescriptor& aFD)
{
MOZ_ASSERT(mActive);
auto rawFD = aFD.ClonePlatformHandle();
PRFileDesc* prfile = PR_ImportFile(PROsfd(rawFD.release()));
mMutableBlobStorage->TemporaryFileCreated(prfile);
mMutableBlobStorage = nullptr;
return IPC_OK();
}
mozilla::ipc::IPCResult
TemporaryIPCBlobChild::Recv__delete__(const IPCBlobOrError& aData)
{
mActive = false;
mMutableBlobStorage = nullptr;
if (aData.type() == IPCBlobOrError::TIPCBlob) {
// This must be always deserialized.
RefPtr<BlobImpl> blobImpl = IPCBlobUtils::Deserialize(aData.get_IPCBlob());
MOZ_ASSERT(blobImpl);
if (mCallback) {
mCallback->OperationSucceeded(blobImpl);
}
} else if(mCallback) {
MOZ_ASSERT(aData.type() == IPCBlobOrError::Tnsresult);
mCallback->OperationFailed(aData.get_nsresult());
}
mCallback = nullptr;
return IPC_OK();
}
void
TemporaryIPCBlobChild::ActorDestroy(ActorDestroyReason aWhy)
{
mActive = false;
mMutableBlobStorage = nullptr;
if (mCallback) {
mCallback->OperationFailed(NS_ERROR_FAILURE);
mCallback = nullptr;
}
}
void
TemporaryIPCBlobChild::AskForBlob(TemporaryIPCBlobChildCallback* aCallback,
const nsACString& aContentType,
PRFileDesc* aFD)
{
MOZ_ASSERT(aCallback);
MOZ_ASSERT(!mCallback);
if (!mActive) {
aCallback->OperationFailed(NS_ERROR_FAILURE);
return;
}
FileDescriptor fdd =
FileDescriptor(FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(aFD)));
mCallback = aCallback;
SendOperationDone(nsCString(aContentType), fdd);
}
} // dom namespace
} // mozilla namespace