patch Wireshark to allow BER decoding for UDP payloads, until feature is released

nixos/133dbc2.diff

@@ -0,0 +1,28 @@
+From 133dbc21785ebcdf571063ee1c4bcf273733c97b Mon Sep 17 00:00:00 2001
+From: Anders Broman <anders.broman@ericsson.com>
+Date: Wed, 01 Jul 2020 08:40:03 +0200
+Subject: [PATCH] BER: Add the posibillity to do "decode as" on an UDP port.
+
+Change-Id: I2897b32b58f154c9998316b16d24bf97ef544153
+Reviewed-on: https://code.wireshark.org/review/37628
+Petri-Dish: Anders Broman <a.broman58@gmail.com>
+Tested-by: Petri Dish Buildbot
+Reviewed-by: Anders Broman <a.broman58@gmail.com>
+---
+
+diff --git a/epan/dissectors/packet-ber.c b/epan/dissectors/packet-ber.c
+index 15c2bb8..16bbf4f 100644
+--- a/epan/dissectors/packet-ber.c
++++ b/epan/dissectors/packet-ber.c
+@@ -4654,9 +4654,10 @@
+     syntax_names[i].value = 0;
+     syntax_names[i].strptr = NULL;
+ 
+-    /* allow the dissection of BER/DER carried over a TCP transport
++    /* allow the dissection of BER/DER carried over a TCP/UDP transport
+        by using "Decode As..." */
+     dissector_add_for_decode_as_with_preference("tcp.port", ber_handle);
++    dissector_add_for_decode_as_with_preference("udp.port", ber_handle);
+ 
+     ber_update_oids();
+ }

nixos/configuration.nix

@@ -77,7 +77,7 @@ in
   programs.wireshark =
     {
       enable = true;
-      package = pkgs.wireshark-qt;
+      package = pkgs.wireshark-qt.overrideAttrs (oldAttrs: rec { patches = oldAttrs.patches ++ [ ./133dbc2.diff ];});
     };
 
   programs.adb.enable = true;