src/main/java/com/irtimaled/bbor/server/ServerRunner.java

   1 package com.irtimaled.bbor.server;
   2
   3 import com.irtimaled.bbor.Versions;
   4 import net.minecraft.launchwrapper.Launch;
   5
   6 import java.io.File;
   7 import java.io.FileOutputStream;
   8 import java.io.IOException;
   9 import java.lang.reflect.Method;
  10 import java.net.MalformedURLException;
  11 import java.net.URL;
  12 import java.net.URLClassLoader;
  13 import java.nio.channels.Channels;
  14 import java.util.ArrayList;
  15 import java.util.HashMap;
  16 import java.util.List;
  17 import java.util.Map;
  18
  19 public class ServerRunner {
  20     private static final Map<String, String> VANILLA_SERVER_JARS = new HashMap<>();
  21
  22     private static final String[] LIBRARIES = {
  23             "https://github.com/irtimaled/Mixin/releases/download/org/spongepowered/mixin/0.7.11-SNAPSHOT/mixin-0.7.11-SNAPSHOT.jar",
  24             "https://repo1.maven.org/maven2/org/ow2/asm/asm/6.2/asm-6.2.jar",
  25             "https://repo1.maven.org/maven2/org/ow2/asm/asm-commons/6.2/asm-commons-6.2.jar",
  26             "https://repo1.maven.org/maven2/org/ow2/asm/asm-tree/6.2/asm-tree-6.2.jar",
  27             "https://libraries.minecraft.net/net/minecraft/launchwrapper/1.12/launchwrapper-1.12.jar"
  28     };
  29
  30     private static final ThrowableConsumer<URL> addURL;
  31
  32     static {
  33         VANILLA_SERVER_JARS.put("1.14.4", "https://launcher.mojang.com/v1/objects/3dc3d84a581f14691199cf6831b71ed1296a9fdf/server.jar");
  34         VANILLA_SERVER_JARS.put("1.14.2", "https://launcher.mojang.com/v1/objects/808be3869e2ca6b62378f9f4b33c946621620019/server.jar");
  35         VANILLA_SERVER_JARS.put("1.13.2", "https://launcher.mojang.com/v1/objects/3737db93722a9e39eeada7c27e7aca28b144ffa7/server.jar");
  36
  37         try {
  38             Method method = URLClassLoader.class
  39                     .getDeclaredMethod("addURL", URL.class);
  40             method.setAccessible(true);
  41             addURL = url -> method.invoke(ClassLoader.getSystemClassLoader(), url);
  42         } catch (ReflectiveOperationException e) {
  43             throw new AssertionError(e);
  44         }
  45     }
  46
  47     private static void addURLToClasspath(File file) throws MalformedURLException {
  48         addURL.accept(file.toURI().toURL());
  49     }
  50
  51     public static void run(List<String> args) throws IOException {
  52         String serverJarUrl = VANILLA_SERVER_JARS.get(Versions.minecraft);
  53
  54         addURLToClasspath(getOrDownload(new File("."), serverJarUrl));
  55         for (String url : LIBRARIES) {
  56             addURLToClasspath(getOrDownload(new File("libs"), url));
  57         }
  58
  59         args = new ArrayList<>(args);
  60         args.add("--tweakClass");
  61         args.add("com.irtimaled.bbor.launch.ServerTweaker");
  62
  63         System.out.println("Launching server...");
  64         Launch.main(args.toArray(new String[0]));
  65     }
  66
  67     private static File getOrDownload(File directory, String url) throws IOException {
  68         String fileName = url.substring(url.lastIndexOf('/') + 1);
  69         File target = new File(directory, fileName);
  70         if (target.isFile()) {
  71             return target;
  72         }
  73         target.getParentFile().mkdirs();
  74
  75         System.out.println("Downloading library: " + url);
  76         new FileOutputStream(target).getChannel()
  77                 .transferFrom(Channels.newChannel(new URL(url).openStream()), 0, Long.MAX_VALUE);
  78
  79         return target;
  80     }
  81 }