From 1a8e15053a6611963042306d4d3b0d5b89629eb1 Mon Sep 17 00:00:00 2001
From: Eelco Dolstra <edolstra@gmail.com>
Date: Thu, 11 May 2017 13:58:09 +0200
Subject: [PATCH] Don't allow untrusted users to set info.ultimate

Note that a trusted signature was still required in this case so it
was not a huge deal.
---
 src/nix-daemon/nix-daemon.cc | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/nix-daemon/nix-daemon.cc b/src/nix-daemon/nix-daemon.cc
index 1b90fad16..d2bb7b8c8 100644
--- a/src/nix-daemon/nix-daemon.cc
+++ b/src/nix-daemon/nix-daemon.cc
@@ -621,6 +621,8 @@ static void performOp(ref<LocalStore> store, bool trusted, unsigned int clientVe
         from >> info.ca >> repair >> dontCheckSigs;
         if (!trusted && dontCheckSigs)
             dontCheckSigs = false;
+        if (!trusted)
+            info.ultimate = false;
 
         TeeSink tee(from);
         parseDump(tee, tee.source);