[PATCH spice-gtk 2/3] clipboard: pre-condition on selection value < 256

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From: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>

The protocol uses a u8 for the selection value. Make sure the given
argument value fits there, or throw a critical.

The other places seem to use u8 variables already.

Signed-off-by: Marc-André Lureau <marcandre.lureau@xxxxxxxxxx>
---
 src/channel-main.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/channel-main.c b/src/channel-main.c
index 7d4b5c2..e359e8d 100644
--- a/src/channel-main.c
+++ b/src/channel-main.c
@@ -1354,6 +1354,7 @@ static void agent_clipboard_grab(SpiceMainChannel *channel, guint selection,
     if (!c->agent_connected)
         return;
 
+    g_return_if_fail(selection < 256);
     g_return_if_fail(test_agent_cap(channel, VD_AGENT_CAP_CLIPBOARD_BY_DEMAND));
 
     size = sizeof(VDAgentClipboardGrab) + sizeof(uint32_t) * ntypes;
-- 
2.21.0.4.g36eb1cb9cf

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