[gnome-remote-desktop/wip/memcpy-rowstride-fix: 2/2] rdp-pipewire-stream: Correct memcpy size calculation

[Ray Strode <halfline src gnome org>]

commit 5fb3209dec2a97b0e0bb74c3d7a9a511f30bec74
Author: Ray Strode <rstrode redhat com>
Date:   Thu Aug 27 14:04:03 2020 -0400

    rdp-pipewire-stream: Correct memcpy size calculation
    
    The previous commit addressed an issue with memcpy size
    calculation in the vnc backend.  The rdp backend inherited,
    the same bug: a potential crash when the source row stride
    is less than the destination row stride.
    
    This commit introduces the same fix, using the width of the
    row pixel data, only, when performing the copy.
    
    https://gitlab.gnome.org/GNOME/gnome-remote-desktop/-/merge_requests/18

 src/grd-rdp-pipewire-stream.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/grd-rdp-pipewire-stream.c b/src/grd-rdp-pipewire-stream.c
index a8491ad..5589fca 100644
--- a/src/grd-rdp-pipewire-stream.c
+++ b/src/grd-rdp-pipewire-stream.c
@@ -318,18 +318,20 @@ process_buffer (GrdRdpPipeWireStream *stream,
       int src_stride;
       int dst_stride;
       int height;
+      int width;
       int y;
 
       src_stride = buffer->datas[0].chunk->stride;
       dst_stride = grd_session_rdp_get_framebuffer_stride (stream->session_rdp);
       height = stream->spa_format.size.height;
+      width = stream->spa_format.size.width;
 
       frame->data = g_malloc (height * dst_stride);
       for (y = 0; y < height; ++y)
         {
           memcpy (((uint8_t *) frame->data) + y * dst_stride,
                   ((uint8_t *) src_data) + y * src_stride,
-                  dst_stride);
+                  width * 4);
         }
     }