serverWrapper script: Auto download and start vanilla server

util/serverWrapper.py

@@ -0,0 +1,73 @@
+"""
+* Codename Minosoft
+* Copyright (C) 2020 Moritz Zwerger
+*
+* This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+*
+*  This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
+*
+*  You should have received a copy of the GNU General Public License along with this program.  If not, see <https://www.gnu.org/licenses/>.
+*
+*  This software is not affiliated with Mojang AB, the original developer of Minecraft.
+"""
+import os
+import requests
+import shutil
+import subprocess
+import sys
+
+javaPath = "/usr/lib/jvm/java-8-openjdk-amd64/bin/java"
+print("Minecraft server wrapper")
+while True:
+    version = input('Enter a minecraft version: ')
+    if len(version) < 2 or len(version) > 10 or not version.find("/"):
+        print("Invalid version!")
+        continue
+    if not os.path.isfile("./" + version + "/server.jar"):
+        # download
+        manifest = requests.get('https://launchermeta.mojang.com/mc/game/version_manifest.json').json()
+        versionJson = ""
+        for key in manifest["versions"]:
+            if key["id"] == version:
+                versionJson = key["url"]
+                break
+        if versionJson == "":
+            print("Snapshot not found!")
+            continue
+        versionJson = requests.get(versionJson).json()
+        server = versionJson["downloads"]["server"]["url"]
+        if server == "":
+            print("Invalid server jar url!")
+            continue
+
+        print("Copying template...", end="")
+        shutil.copytree("TEMPLATE", version)
+        print("done")
+
+        print("Downloading server.jar...", end="")
+        server = requests.get(server)
+        with open("./" + version + '/server.jar', 'wb') as f:
+            f.write(server.content)
+        print("done")
+
+    print("Starting server...", end="")
+
+    process = ""
+    try:
+        process = subprocess.Popen(javaPath + " -jar server.jar nogui",
+                                   shell=True, stdout=subprocess.PIPE, cwd=version, universal_newlines=True,
+                                   stderr=subprocess.STDOUT)
+
+        while True:
+            nextline = process.stdout.readline()
+            if nextline == '' and process.poll() is not None:
+                break
+            sys.stdout.write(nextline)
+            sys.stdout.flush()
+        process.wait()
+
+    except KeyboardInterrupt:
+        print("CTRL + C")
+        process.kill()
+
+    print("Server stopped (" + str(process.returncode) + ")")