bool
nsTemporaryFileInputStream::Deserialize(const InputStreamParams& aParams,
const FileDescriptorArray& aFileDescriptors)
{
const TemporaryFileInputStreamParams& params = aParams.get_TemporaryFileInputStreamParams();
uint32_t fileDescriptorIndex = params.fileDescriptorIndex();
FileDescriptor fd;
if (fileDescriptorIndex < aFileDescriptors.Length()) {
fd = aFileDescriptors[fileDescriptorIndex];
NS_WARN_IF_FALSE(fd.IsValid(), "Received an invalid file descriptor!");
} else {
NS_WARNING("Received a bad file descriptor index!");
}
if (fd.IsValid()) {
auto rawFD = fd.ClonePlatformHandle();
PRFileDesc* fileDesc = PR_ImportFile(PROsfd(rawFD.release()));
if (!fileDesc) {
NS_WARNING("Failed to import file handle!");
return false;
}
mFileDescOwner = new FileDescOwner(fileDesc);
} else {
mClosed = true;
}
mStartPos = mCurPos = params.startPos();
mEndPos = params.endPos();
return true;
}
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 = Move(mFile);
RefPtr<TemporaryFileBlobImpl> blobImpl =
new TemporaryFileBlobImpl(file, NS_ConvertUTF8toUTF16(aContentType));
PR_Close(prfile);
IPCBlob ipcBlob;
nsresult rv = IPCBlobUtils::Serialize(blobImpl, Manager(), ipcBlob);
if (NS_WARN_IF(NS_FAILED(rv))) {
Unused << Send__delete__(this, NS_ERROR_FAILURE);
return IPC_OK();
}
Unused << Send__delete__(this, ipcBlob);
return IPC_OK();
}
/* static */
already_AddRefed<FileDescriptorOutputStream> FileDescriptorOutputStream::Create(
const ipc::FileDescriptor& fileDescriptor) {
if (NS_WARN_IF(!fileDescriptor.IsValid())) return nullptr;
auto rawFD = fileDescriptor.ClonePlatformHandle();
PRFileDesc* prfd = PR_ImportFile(PROsfd(rawFD.release()));
if (NS_WARN_IF(!prfd)) return nullptr;
RefPtr<FileDescriptorOutputStream> stream =
new FileDescriptorOutputStream(prfd);
return stream.forget();
}
/* static */ already_AddRefed<FileDescriptorOutputStream>
FileDescriptorOutputStream::Create(const ipc::FileDescriptor& fileDescriptor)
{
if (NS_WARN_IF(!fileDescriptor.IsValid()))
return nullptr;
PRFileDesc* prfd = PR_ImportFile(PROsfd(fileDescriptor.PlatformHandle()));
if (NS_WARN_IF(!prfd))
return nullptr;
nsRefPtr<FileDescriptorOutputStream> stream = new FileDescriptorOutputStream(prfd);
return stream.forget();
}
void
RemotePrintJobChild::SetNextPageFD(const mozilla::ipc::FileDescriptor& aFd)
{
auto handle = aFd.ClonePlatformHandle();
mNextPageFD = PR_ImportFile(PROsfd(handle.release()));
}