From 933a5a06c9ae8cf0333cdc95154536fb758c894b Mon Sep 17 00:00:00 2001
From: Will Bradley <bradley.will@gmail.com>
Date: Thu, 26 Jan 2023 23:15:40 +0000
Subject: [PATCH] Initial commit

---
 README.md           | 17 ++++++++++++++++
 mineautoshutdown.sh | 25 ++++++++++++++++++++++++
 minecraft.php       | 47 +++++++++++++++++++++++++++++++++++++++++++++
 minestatus.py       | 24 +++++++++++++++++++++++
 4 files changed, 113 insertions(+)
 create mode 100644 README.md
 create mode 100755 mineautoshutdown.sh
 create mode 100644 minecraft.php
 create mode 100644 minestatus.py

diff --git a/README.md b/README.md
new file mode 100644
index 0000000..94fe40e
--- /dev/null
+++ b/README.md
@@ -0,0 +1,17 @@
+# Minecraft server automatic startup and shutdown
+
+Install the .php file on a webserver and configure the variables as desired.
+
+Place the remaining files on a server with CRON (could be the same server, just
+not inside the web folder) and run the shell script every 5 minutes:
+
+`*/5 * * * * * /your/path/here/minecraftautoshutdown.sh`
+
+Ensure the same password is present in the php script and the shutdown script.
+
+Call the php script via HTTP using the correct password when players want to play:
+
+`curl http://your.webserver.here/minecraft.php?action=on&password=your_password_here`
+
+If the CRON job runs properly and has all the right variables/permissions/dependencies,
+it will shut down the DO droplet about 30-40 minutes after no players are detected in the game.
diff --git a/mineautoshutdown.sh b/mineautoshutdown.sh
new file mode 100755
index 0000000..b3bce36
--- /dev/null
+++ b/mineautoshutdown.sh
@@ -0,0 +1,25 @@
+DO_STATUS_URL="http://example.com/minecraft.php"
+status=$(curl -s "$DO_STATUS_URL?action=status")
+
+if [[ $status == "active" ]]; then
+  players=$(python3 minestatus.py  | jq ".players")
+
+  if [[ $players == 0 ]]; then
+
+    count=$(cat /tmp/minecount)
+
+    if [[ $count -gt 6 ]]; then
+      echo "players $players count $count, killing"
+      curl -s "$DO_STATUS_URL?action=off"
+      echo "0" > /tmp/minecount
+    else
+      echo $(($count+1)) > /tmp/minecount
+      echo "players $players count $count, waiting"
+    fi
+  else
+    echo "players $players, resetting"
+    echo "0" > /tmp/minecount
+  fi
+else
+  echo "not active"
+fi
diff --git a/minecraft.php b/minecraft.php
new file mode 100644
index 0000000..936502d
--- /dev/null
+++ b/minecraft.php
@@ -0,0 +1,47 @@
+<?php
+
+$DIGITALOCEAN_TOKEN="dop_your_digitalocean_token_here";
+$DROPLET_ID="your_droplet_id_here";
+$PASSWORD="your_password_here";
+
+if ($_GET['password'] !== $PASSWORD) {
+  usleep(rand(0,999999));
+  exit("Invalid password.");
+}
+
+if ($_GET['action'] == "on") {
+
+$out = `curl -X POST \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
+  -d '{"type":"power_on"}' \
+  "https://api.digitalocean.com/v2/droplets/$DROPLET_ID/actions"`;
+
+} elseif ($_GET['action'] == "off") {
+
+$out = `curl -X POST \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
+  -d '{"type":"power_off"}' \
+  "https://api.digitalocean.com/v2/droplets/$DROPLET_ID/actions"`;
+
+} elseif ($_GET['action'] == "status") {
+
+$out = `curl -X GET \
+  -H "Content-Type: application/json" \
+  -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
+  "https://api.digitalocean.com/v2/droplets/$DROPLET_ID"`;
+
+} else {
+
+echo "Invalid action.";
+
+}
+
+$json = json_decode($out, true);
+
+if ($json['action']) {
+  echo $json['action']['status'];
+} elseif ($json['droplet']) {
+  echo $json['droplet']['status'];
+}
diff --git a/minestatus.py b/minestatus.py
new file mode 100644
index 0000000..340b2b7
--- /dev/null
+++ b/minestatus.py
@@ -0,0 +1,24 @@
+from mcstatus import JavaServer
+import json
+
+# You can pass the same address you'd enter into the address field in minecraft into the 'lookup' function
+# If you know the host and port, you may skip this and use JavaServer("example.org", 1234)
+server = JavaServer.lookup("your.minecraft.server.hostname.here")
+
+# 'status' is supported by all Minecraft servers that are version 1.7 or higher.
+# Don't expect the player list to always be complete, because many servers run
+# plugins that hide this information or limit the number of players returned or even
+# alter this list to contain fake players for purposes of having a custom message here.
+status = server.status()
+print(json.dumps({'players': status.players.online, 'ms': status.latency}))
+#print(f"{{""players"": {status.players.online}, ""ms"": {status.latency} }}")
+
+# 'ping' is supported by all Minecraft servers that are version 1.7 or higher.
+# It is included in a 'status' call, but is also exposed separate if you do not require the additional info.
+#latency = server.ping()
+#print(f"The server replied in {latency} ms")
+
+# 'query' has to be enabled in a server's server.properties file!
+# It may give more information than a ping, such as a full player list or mod information.
+#query = server.query()
+#print(f"The server has the following players online: {', '.join(query.players.names)}")