From d8a74e8a3cf50b6b15feb72d8b736cd669504e1b Mon Sep 17 00:00:00 2001
From: Dominique Martinet <asmadeus@codewreck.org>
Date: Tue, 2 Oct 2018 16:03:48 +0900
Subject: [PATCH] glfw/x11_window/selection: timeout if no answer for two
 seconds

This prevents kitty to hang forever if a bad client does not give selection
---
 glfw/x11_window.c | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/glfw/x11_window.c b/glfw/x11_window.c
index 04648e14d..db7565827 100644
--- a/glfw/x11_window.c
+++ b/glfw/x11_window.c
@@ -873,6 +873,7 @@ static const char* getSelectionString(Atom selection)
         Atom actualType;
         int actualFormat;
         unsigned long itemCount, bytesAfter;
+        double start = glfwGetTime();
         XEvent notification, dummy;
 
         XConvertSelection(_glfw.x11.display,
@@ -887,7 +888,10 @@ static const char* getSelectionString(Atom selection)
                                        SelectionNotify,
                                        &notification))
         {
-            waitForX11Event(-1);
+            double time = glfwGetTime();
+            if (time - start > 2)
+                return "";
+            waitForX11Event(2.0 - (time - start));
         }
 
         if (notification.xselection.property == None)
@@ -918,12 +922,16 @@ static const char* getSelectionString(Atom selection)
 
             for (;;)
             {
+                start = glfwGetTime();
                 while (!XCheckIfEvent(_glfw.x11.display,
                                       &dummy,
                                       isSelPropNewValueNotify,
                                       (XPointer) &notification))
                 {
-                    waitForX11Event(-1);
+                    double time = glfwGetTime();
+                    if (time - start > 2)
+                        return "";
+                    waitForX11Event(2.0 - (time - start));
                 }
 
                 XFree(data);