From f8ffab3a115febe838cd1eda640abe959e51d792 Mon Sep 17 00:00:00 2001
From: ivan-boikov <ik.boikov.public@protonmail.com>
Date: Sat, 13 Jan 2024 13:50:41 +0100
Subject: [PATCH] No mailsync with locked GPG key in non-interactive shells

---
 bin/mailsync | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/bin/mailsync b/bin/mailsync
index cbd36ff..9c7f457 100755
--- a/bin/mailsync
+++ b/bin/mailsync
@@ -24,6 +24,9 @@ eval "$(grep -h -- \
 	"$HOME/.config/zsh/.zshenv" "$HOME/.bashrc" "$HOME/.zshrc" "$HOME/.config/zsh/.zshrc" \
 	"$HOME/.pam_environment" 2>/dev/null)"
 
+# For non-interactive shell (e.g. cron job) run only when the GPG key (in $GNUPGHOME or pass --homedir) is unlocked
+tty -s || (echo "dummy" | gpg --sign --batch --pinentry-mode error -o /dev/null > /dev/null 2>&1) || exit
+
 export GPG_TTY="$(tty)"
 
 [ -n "$MBSYNCRC" ] && alias mbsync="mbsync -c $MBSYNCRC" || MBSYNCRC="$HOME/.mbsyncrc"