From 4015999e13543998e0d120c7a4ef13069d1280dd Mon Sep 17 00:00:00 2001
From: Darren 'Tadgy' Austin <darren@afterdark.org.uk>
Date: Fri, 3 Nov 2023 19:30:12 +0000
Subject: [PATCH] Only forward gpg-agent socket over ssh if it exists.

---
 .ssh/config | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/.ssh/config b/.ssh/config
index 3b1ca37..738e162 100644
--- a/.ssh/config
+++ b/.ssh/config
@@ -8,12 +8,15 @@ ConnectTimeout			30
 ExitOnForwardFailure		yes
 ForwardAgent			yes
 HashKnownHosts			no
-RemoteForward			%d/.gnupg/S.gpg-agent	${HOME}/.gnupg/S.gpg-agent
 SendEnv				LANG LC_* TERM
 StrictHostKeyChecking		accept-new
 VerifyHostKeyDNS		yes
 VisualHostKey			yes
 
+# Only forward the gpg-agent socket if it exists on the local host.
+Match exec "[[ -e ${HOME}/.gnupg/S.gpg-agent  ]]"
+  RemoteForward			%d/.gnupg/S.gpg-agent	${HOME}/.gnupg/S.gpg-agent
+
 # Home stuff.
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