package net.minecraftforge.fml.common.launcher; import java.net.Proxy; import java.util.Map; import org.apache.logging.log4j.LogManager; import com.google.common.base.Throwables; import com.mojang.authlib.Agent; import com.mojang.authlib.exceptions.AuthenticationException; import com.mojang.authlib.yggdrasil.YggdrasilAuthenticationService; import com.mojang.authlib.yggdrasil.YggdrasilUserAuthentication; /** * Basic implementation of Mojang's 'Yggdrasil' login system, purely intended as a dev time bare bones login. * Login errors are not handled. */ public class Yggdrasil { public static void login(Map<String, String> args) { if (!args.containsKey("--username") || !args.containsKey("--password")) return; YggdrasilUserAuthentication auth = (YggdrasilUserAuthentication) new YggdrasilAuthenticationService(Proxy.NO_PROXY, "1").createUserAuthentication(Agent.MINECRAFT); auth.setUsername(args.get("--username")); auth.setPassword(args.remove("--password")); try { auth.logIn(); } catch (AuthenticationException e) { LogManager.getLogger("FMLTWEAK").error("-- Login failed! " + e.getMessage()); Throwables.propagate(e); return; // dont set other variables } args.put("--username", auth.getSelectedProfile().getName()); args.put("--uuid", auth.getSelectedProfile().getId().toString().replace("-", "")); args.put("--accessToken", auth.getAuthenticatedToken()); args.put("--userProperties", auth.getUserProperties().toString()); } }