Abort when we don't have permission for either input or x11 display

moonlight-common-c

@@ -1 +1 @@
-Subproject commit e60a7ef75f02559e7c5271f4e08f815af5f4a8cc
+Subproject commit cfeb0ffd90992ee0fa4b6b4a179652e3e2786873

sunshine/platform/linux.cpp

@@ -134,7 +134,15 @@ void blend_cursor(Display *display, std::uint8_t *img_data, int width, int heigh
   }
 }
 struct x11_attr_t : public display_t {
-  x11_attr_t() : xdisplay {XOpenDisplay(nullptr) }, xwindow {DefaultRootWindow(xdisplay.get()) }, xattr {} {
+  x11_attr_t() : xdisplay {XOpenDisplay(nullptr) }, xwindow { }, xattr {} {
+    if(!xdisplay) {
+      BOOST_LOG(fatal) << "Could not open x11 display"sv;
+      log_flush();
+      std::abort();
+    }
+
+    xwindow = DefaultRootWindow(xdisplay.get());
+
     refresh();
   }
 

sunshine/platform/linux_evdev.cpp

@@ -421,16 +421,22 @@ input_t input() {
   auto &gp = *(input_raw_t*)result.get();
 
   gp.keyboard.reset(XOpenDisplay(nullptr));
+
+  // If we do not have a keyboard, gamepad or mouse, no input is possible and we should abort
   if(!gp.keyboard) {
-    return nullptr;
+    BOOST_LOG(fatal) << "Could not open x11 display for keyboard"sv;
+    log_flush();
+    std::abort();
   }
 
   if(gamepad(gp)) {
-    return nullptr;
+    log_flush();
+    std::abort();
   }
 
   if(mouse(gp)) {
-    return nullptr;
+    log_flush();
+    std::abort();
   }
 
   std::filesystem::path mouse_path { "sunshine_mouse" };