From 3443b8c5a2ce3a05927efe35df5ded45a65e7d29 Mon Sep 17 00:00:00 2001
From: kaboom <58372747+kaboombot@users.noreply.github.com>
Date: Sat, 9 Apr 2022 14:37:18 +0300
Subject: [PATCH] Implement crash loop detector

---
 script/alivecheck.sh |  3 +++
 script/server.sh     | 11 +++++++++++
 2 files changed, 14 insertions(+)

diff --git a/script/alivecheck.sh b/script/alivecheck.sh
index 2132886..253a284 100755
--- a/script/alivecheck.sh
+++ b/script/alivecheck.sh
@@ -13,5 +13,8 @@ while true; do
 	if [ "$(env printf '\xFE' | nc -w 15 0.0.0.0 25565 | wc -m)" -eq 0 ]; then
 		pkill -9 java
 		echo $(date) >> ~/kill.log
+	else
+		# Server is still running, reset the crash loop detector
+		rm ~/server/server_stops.log
 	fi
 done
diff --git a/script/server.sh b/script/server.sh
index 5285d6c..f39340b 100755
--- a/script/server.sh
+++ b/script/server.sh
@@ -11,6 +11,16 @@ java -Xshare:dump
 cd ~/server/
 
 while true; do
+	# Check if the server is stuck in a crash loop, and reset worlds if this is the case
+	# The alive checker resets server_stops.log if the server runs long enough
+
+	stop_log_file=server_stops.log
+
+	if [ -f "$stop_log_file" ] && [ "$(wc -l < $stop_log_file)" -gt 3 ]; then
+		rm -rf worlds/ plugins/FastAsyncWorldEdit/clipboard/ plugins/FastAsyncWorldEdit/history/
+		rm "$stop_log_file"
+	fi
+
 	# Make certain files and folders read-only
 
 	mkdir debug/ dumps/ plugins/update/
@@ -46,6 +56,7 @@ while true; do
 	# Stop alive checker (will be started again on the next run)
 
 	pkill -9 alivecheck.sh
+	echo $(date) >> "$stop_log_file"
 
 	# Ensure we don't abuse the CPU in case of failure
 	sleep 1