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;
}
bool
nsFileInputStream::Deserialize(const InputStreamParams& aParams,
const FileDescriptorArray& aFileDescriptors)
{
NS_ASSERTION(!mFD, "Already have a file descriptor?!");
NS_ASSERTION(!mDeferredOpen, "Deferring open?!");
NS_ASSERTION(!mFile, "Should never have a file here!");
NS_ASSERTION(!mPerm, "This should always be 0!");
if (aParams.type() != InputStreamParams::TFileInputStreamParams) {
NS_WARNING("Received unknown parameters from the other process!");
return false;
}
const FileInputStreamParams& params = aParams.get_FileInputStreamParams();
uint32_t fileDescriptorIndex = params.fileDescriptorIndex();
FileDescriptor fd;
if (fileDescriptorIndex < aFileDescriptors.Length()) {
fd = aFileDescriptors[fileDescriptorIndex];
NS_WARNING_ASSERTION(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;
}
mFD = fileDesc;
}
mBehaviorFlags = params.behaviorFlags();
if (!XRE_IsParentProcess()) {
// A child process shouldn't close when it reads the end because it will
// not be able to reopen the file later.
mBehaviorFlags &= ~nsIFileInputStream::CLOSE_ON_EOF;
// A child process will not be able to reopen the file so this flag is
// meaningless.
mBehaviorFlags &= ~nsIFileInputStream::REOPEN_ON_REWIND;
}
mIOFlags = params.ioFlags();
return true;
}
mozilla::ipc::IPCResult
PDFiumChild::RecvConvertToEMF(const FileDescriptor& aFD,
const int& aPageWidth,
const int& aPageHeight)
{
MOZ_ASSERT(aFD.IsValid() && aPageWidth != 0 && aPageHeight != 0);
ipc::Shmem smem;
PDFViaEMFPrintHelper convertor;
if (NS_FAILED(convertor.OpenDocument(aFD))) {
Unused << SendConvertToEMFDone(NS_ERROR_FAILURE, smem);
return IPC_OK();
}
MOZ_ASSERT(convertor.GetPageCount() == 1, "we assume each given PDF contains" "one page only");
if (!convertor.SavePageToBuffer(0, aPageWidth, aPageHeight, smem, this)) {
Unused << SendConvertToEMFDone(NS_ERROR_FAILURE, smem);
return IPC_OK();
}
if (!smem.IsReadable()) {
Unused << SendConvertToEMFDone(NS_ERROR_FAILURE, smem);
return IPC_OK();
}
Unused << SendConvertToEMFDone(NS_OK, smem);
return IPC_OK();
}
GeckoExistingProcessHost::
GeckoExistingProcessHost(GeckoProcessType aProcessType,
base::ProcessHandle aProcess,
const FileDescriptor& aFileDescriptor,
ChildPrivileges aPrivileges)
: GeckoChildProcessHost(aProcessType, aPrivileges)
, mExistingProcessHandle(aProcess)
, mExistingFileDescriptor(aFileDescriptor)
{
NS_ASSERTION(aFileDescriptor.IsValid(),
"Expected file descriptor to be valid");
}
CloseFileRunnable::CloseFileRunnable(const FileDescriptor& aFileDescriptor)
: mFileDescriptor(aFileDescriptor)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aFileDescriptor.IsValid());
}