[gnome-remote-desktop] clipboard-rdp: Add public async FileContents request functions

[Jonas Ådahl <jadahl src gnome org>]

commit 6857f53612ad764d7415071112cedf930b6068de
Author: Pascal Nowack <Pascal Nowack gmx de>
Date:   Thu Nov 12 16:07:30 2020 +0100

    clipboard-rdp: Add public async FileContents request functions
    
    In order to be able to manage the files, that were copied to the
    clipboard, via FUSE, add public functions to request the file size of a
    file and to request data of a file.
    These functions don't handle the FileContentsResponse, which allows
    the FUSE implementation for the clipboard to request the data in an
    asynchronous way.

 src/grd-clipboard-rdp.c | 41 +++++++++++++++++++++++++++++++++++++++++
 src/grd-clipboard-rdp.h | 10 ++++++++++
 2 files changed, 51 insertions(+)
---
diff --git a/src/grd-clipboard-rdp.c b/src/grd-clipboard-rdp.c
index 17c0768..8b4396f 100644
--- a/src/grd-clipboard-rdp.c
+++ b/src/grd-clipboard-rdp.c
@@ -464,6 +464,24 @@ request_remote_file_size (GrdClipboardRdp *clipboard_rdp,
   return FALSE;
 }
 
+void
+grd_clipboard_rdp_request_remote_file_size_async (GrdClipboardRdp *clipboard_rdp,
+                                                  uint32_t         stream_id,
+                                                  uint32_t         list_index)
+{
+  CliprdrServerContext *cliprdr_context = clipboard_rdp->cliprdr_context;
+  CLIPRDR_FILE_CONTENTS_REQUEST file_contents_request = {0};
+
+  file_contents_request.msgType = CB_FILECONTENTS_REQUEST;
+  file_contents_request.streamId = stream_id;
+  file_contents_request.listIndex = list_index;
+  file_contents_request.dwFlags = FILECONTENTS_SIZE;
+  file_contents_request.cbRequested = 0x8;
+
+  cliprdr_context->ServerFileContentsRequest (cliprdr_context,
+                                              &file_contents_request);
+}
+
 static uint8_t *
 request_remote_file_data (GrdClipboardRdp *clipboard_rdp,
                           uint32_t         stream_id,
@@ -510,6 +528,29 @@ request_remote_file_data (GrdClipboardRdp *clipboard_rdp,
   return requested_data;
 }
 
+void
+grd_clipboard_rdp_request_remote_file_range_async (GrdClipboardRdp *clipboard_rdp,
+                                                   uint32_t         stream_id,
+                                                   uint32_t         list_index,
+                                                   uint64_t         offset,
+                                                   uint32_t         requested_size)
+{
+  CliprdrServerContext *cliprdr_context = clipboard_rdp->cliprdr_context;
+  CLIPRDR_FILE_CONTENTS_REQUEST file_contents_request = {0};
+
+  file_contents_request.msgType = CB_FILECONTENTS_REQUEST;
+  file_contents_request.streamId = stream_id;
+  file_contents_request.listIndex = list_index;
+  file_contents_request.dwFlags = FILECONTENTS_RANGE;
+  file_contents_request.nPositionLow = offset & 0xFFFFFFFF;
+  file_contents_request.nPositionHigh = offset >> 32 & 0xFFFFFFFF;
+  file_contents_request.cbRequested = requested_size;
+  file_contents_request.haveClipDataId = FALSE;
+
+  cliprdr_context->ServerFileContentsRequest (cliprdr_context,
+                                              &file_contents_request);
+}
+
 static uint8_t *
 get_uri_list_from_packet_file_list (GrdClipboardRdp *clipboard_rdp,
                                     uint8_t         *src_data,
diff --git a/src/grd-clipboard-rdp.h b/src/grd-clipboard-rdp.h
index bb37379..a832c56 100644
--- a/src/grd-clipboard-rdp.h
+++ b/src/grd-clipboard-rdp.h
@@ -34,4 +34,14 @@ GrdClipboardRdp *grd_clipboard_rdp_new (GrdSessionRdp *session_rdp,
                                         HANDLE         vcm,
                                         HANDLE         stop_event);
 
+void grd_clipboard_rdp_request_remote_file_size_async (GrdClipboardRdp *clipboard_rdp,
+                                                       uint32_t         stream_id,
+                                                       uint32_t         list_index);
+
+void grd_clipboard_rdp_request_remote_file_range_async (GrdClipboardRdp *clipboard_rdp,
+                                                        uint32_t         stream_id,
+                                                        uint32_t         list_index,
+                                                        uint64_t         offset,
+                                                        uint32_t         requested_size);
+
 #endif /* GRD_CLIPBOARD_RDP_H */