From d50a1c7c58c348fe218fc0f2a9da062d9ae65acb Mon Sep 17 00:00:00 2001
From: sceox <sceox@sceox.net>
Date: Sat, 16 Sep 2023 14:15:18 -0700
Subject: [PATCH] ircbot: Restart on failure, do not self-exec if running under
 systemd

---
 ircbot.sh                       | 10 +++++++++-
 services/systemd/ircbot.service |  1 +
 2 files changed, 10 insertions(+), 1 deletion(-)

diff --git a/ircbot.sh b/ircbot.sh
index 8e46847..893cb3f 100755
--- a/ircbot.sh
+++ b/ircbot.sh
@@ -22,7 +22,15 @@ connect() {
     echo "PRIVMSG $chan : $joinmsg" >> $inputf
 }
 reconnect() {
-    exec $0
+    if command -v systemctl >/dev/null; then
+        # NOTE: systemd is configured to restart the service, so simply dying
+        #       with a non-zero exit code is enough to effectively reconnect.
+        exit 2
+    else
+        # FIXME: We need to make sure we are only running one instance of the
+        #        script at a time. This exec is therefore problematic.
+        exec $0
+    fi
 }
 delay() {
     while read line
diff --git a/services/systemd/ircbot.service b/services/systemd/ircbot.service
index bb8fa5c..ed67aee 100644
--- a/services/systemd/ircbot.service
+++ b/services/systemd/ircbot.service
@@ -5,6 +5,7 @@ Description=Anarchyplanet IRC Bot
 User=nagios
 Group=nagios
 ExecStart=/usr/local/bin/ircbot.sh
+Restart=on-failure
 
 [Install]
 WantedBy=multi-user.target