Update for new AWS image style

Support old minecraft versions

autoshutdown.sh

@@ -3,10 +3,14 @@
 # If exists tmux session
 # If Responds to queries
 
-SERVER_DIR='/home/ubuntu/minecraft/servers/kincls'
-TMUX_NAME='minecraft kincls server'
+SERVER_DIR='/home/ubuntu/minecraft'
+TMUX_NAME='minecraft server'
 LIVE_UNTIL="/home/ubuntu/minecraft/live_until.txt"
 
+json_has() {
+    cat - | python3 -c "import sys, json; sys.exit(0 if '$1' in json.load(sys.stdin) else 1)"
+}
+
 json_parse() {
     cat - | python3 -c "import sys, json; print(json.load(sys.stdin)['$1'])"
 }
@@ -51,6 +55,16 @@ server_responsive() {
     silent_exitcode /usr/local/bin/mcstatus localhost ping
 }
 
+get_nplayers() {
+    json="$(/usr/local/bin/mcstatus localhost json)"
+    if `echo $json | json_has player_count`; then
+        echo $json | json_parse player_count
+        return
+    fi
+    status="$(/usr/local/bin/mcstatus localhost status)"
+    echo "$status" | grep players: | sed 's/.*\([0-9]\+\)\/.*/\1/g'
+}
+
 n_logins="$(w -h | wc -l)"
 echo "$(date) [$n_logins logins]"
 
@@ -67,7 +81,7 @@ else
 fi
 
 if server_responsive; then
-    n_players=$(/usr/local/bin/mcstatus localhost json | json_parse player_count)
+    n_players=$(get_nplayers)
     echo "Server responsive. $n_players players online"
     if [ "$n_players" -gt 0 ]; then
         # Keep alive as players are online