зеркало из https://github.com/mozilla/gecko-dev.git
119 строки
3.0 KiB
C++
119 строки
3.0 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 "TemporaryIPCBlobParent.h"
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#include "mozilla/dom/FileBlobImpl.h"
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#include "nsAnonymousTemporaryFile.h"
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#include "nsIFileStreams.h"
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#include "TemporaryFileBlobImpl.h"
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namespace mozilla {
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namespace dom {
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TemporaryIPCBlobParent::TemporaryIPCBlobParent()
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: mActive(true)
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{}
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TemporaryIPCBlobParent::~TemporaryIPCBlobParent()
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{
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// If we still have mFile, let's remove it.
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if (mFile) {
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mFile->Remove(false);
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}
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}
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mozilla::ipc::IPCResult
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TemporaryIPCBlobParent::CreateAndShareFile()
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{
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MOZ_ASSERT(mActive);
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MOZ_ASSERT(!mFile);
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nsresult rv = NS_OpenAnonymousTemporaryNsIFile(getter_AddRefs(mFile));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return SendDeleteError(rv);
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}
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PRFileDesc* fd;
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rv = mFile->OpenNSPRFileDesc(PR_RDWR, PR_IRWXU, &fd);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return SendDeleteError(rv);
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}
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FileDescriptor fdd =
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FileDescriptor(FileDescriptor::PlatformHandleType(PR_FileDesc2NativeHandle(fd)));
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// The FileDescriptor object owns a duplicate of the file handle; we
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// must close the original (and clean up the NSPR descriptor).
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PR_Close(fd);
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Unused << SendFileDesc(fdd);
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return IPC_OK();
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}
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mozilla::ipc::IPCResult
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TemporaryIPCBlobParent::RecvOperationFailed()
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{
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MOZ_ASSERT(mActive);
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mActive = false;
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// Nothing to do.
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Unused << Send__delete__(this, NS_ERROR_FAILURE);
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return IPC_OK();
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}
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mozilla::ipc::IPCResult
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TemporaryIPCBlobParent::RecvOperationDone(const nsCString& aContentType,
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const FileDescriptor& aFD)
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{
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MOZ_ASSERT(mActive);
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mActive = false;
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// We have received a file descriptor because in this way we have kept the
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// file locked on windows during the IPC communication. After the creation of
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// the TemporaryFileBlobImpl, this prfile can be closed.
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auto rawFD = aFD.ClonePlatformHandle();
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PRFileDesc* prfile = PR_ImportFile(PROsfd(rawFD.release()));
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// Let's create the BlobImpl.
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nsCOMPtr<nsIFile> file = std::move(mFile);
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RefPtr<TemporaryFileBlobImpl> blobImpl =
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new TemporaryFileBlobImpl(file, NS_ConvertUTF8toUTF16(aContentType));
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PR_Close(prfile);
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IPCBlob ipcBlob;
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nsresult rv = IPCBlobUtils::Serialize(blobImpl, Manager(), ipcBlob);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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Unused << Send__delete__(this, NS_ERROR_FAILURE);
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return IPC_OK();
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}
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Unused << Send__delete__(this, ipcBlob);
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return IPC_OK();
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}
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void
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TemporaryIPCBlobParent::ActorDestroy(ActorDestroyReason aWhy)
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{
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mActive = false;
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}
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mozilla::ipc::IPCResult
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TemporaryIPCBlobParent::SendDeleteError(nsresult aRv)
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{
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MOZ_ASSERT(mActive);
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mActive = false;
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Unused << Send__delete__(this, aRv);
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return IPC_OK();
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}
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} // dom namespace
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} // mozilla namespace
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