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