CyberFlame CyberFlameGO

Heya! This is my first gist. I'll probably actually make good use of these some time in the future but yeah here's the first.

SkyPaper

Uploading and download Minecraft worlds from mysql

The idea was to be able to upload worlds to a database so that we could have multiple servers upload and download them at will to enable load balancing for servers such as skyblock as the demands of scalable 1.17 servers grow while the performance falls version to version.

The important idea here was to see if it was possible to upload worlds to a database, which the answer is yes :D. but this even works better for skyblock servers as they are mostly air, which allowed us to do a small optimization. which is when a chunk is empty, we don't have it, as generating empty chunks is cheap as chips, but storing them has about 500B of overhead. so it ends up taking longer to fetch them from the database, then just generate them.

	#!/usr/bin/env python3

	# From https://github.com/CyberFlameGO/schoolPythonProject/blob/master/coffee.py

	# This dictionary stores the coffees available and their prices
	coffee_kv_store = {"espresso": 2.50, "mocha": 4, "cappuccino": 3, "latte": 3.50, "flat white": 2.50, "long black": 2.50}
	# This list stores the coffees ordered
	coffees_ordered = [] # a key-value pair would be ideal but this is easiest imo tbh
	# 'while' loop variables
	ordering = True

	### Recommended BASIC IPTables firewall rules for Bungeecord networks ###
	# Anything containing 'OPTIONAL' may cause network issues on some server setups. Use at your own risk (Can obviously be removed #

	### 1: Drop invalid packets ###
	/sbin/iptables -t mangle -A PREROUTING -m conntrack --ctstate INVALID -j DROP

	### 2: Drop TCP packets that are new and are not SYN ###
	/sbin/iptables -t mangle -A PREROUTING -p tcp ! --syn -m conntrack --ctstate NEW -j DROP

	### 4: Block packets with bogus TCP flags ###

	### 1: Drop invalid packets ###
	/sbin/iptables -t mangle -A PREROUTING -m conntrack --ctstate INVALID -j DROP

	### 2: Drop TCP packets that are new and are not SYN ###
	/sbin/iptables -t mangle -A PREROUTING -p tcp ! --syn -m conntrack --ctstate NEW -j DROP

	### 3: Drop SYN packets with suspicious MSS value ###
	/sbin/iptables -t mangle -A PREROUTING -p tcp -m conntrack --ctstate NEW -m tcpmss ! --mss 536:65535 -j DROP

	### 4: Block packets with bogus TCP flags ###

	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<!-- not sure which one it is, so set both -->
	<key>Ensemble</key>
	<dict>
	<key>Enabled</key>
	<true/>
	</dict>

	<?xml version="1.0" encoding="UTF-8"?>
	<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
	<plist version="1.0">
	<dict>
	<!-- not sure which one it is, so set both -->
	<key>Ensemble</key>
	<dict>
	<key>Enabled</key>
	<true/>
	</dict>

	#Minecraft server properties
	#Sun Oct 10 18:18:53 NZDT 2021
	enable-jmx-monitoring=false
	rcon.port=25575
	enable-command-block=false
	gamemode=survival
	enable-query=false
	generator-settings={"lakes"\:false,"features"\:false,"layers"\:[{"block"\:"minecraft\:air","height"\:1}],"structures"\:{"structures"\:{}}}
	level-name=world
	motd=A Minecraft Server


	/*
	Loops over every IP in the world
	*/
	public class LoopAllnetAddr {
	public static void main(String[] args) {
	for (int x = 1; x < 256; x++) {
	if (x == 10) continue;
	for (int f = 0; f < 256; f++) {
	if ((x == 172 && (f >= 16 && f <= 31)) \|\|