131 lines
4.7 KiB
Java
131 lines
4.7 KiB
Java
/*
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* Hello Minecraft! Launcher.
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* Copyright (C) 2018 huangyuhui <huanghongxun2008@126.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see {http://www.gnu.org/licenses/}.
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*/
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package org.jackhuang.hmcl;
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import static org.jackhuang.hmcl.util.Logging.LOG;
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import static org.jackhuang.hmcl.util.i18n.I18n.i18n;
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import java.io.File;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.security.KeyStore;
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import java.security.KeyStoreException;
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import java.security.NoSuchAlgorithmException;
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import java.security.cert.X509Certificate;
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import java.util.logging.Level;
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import javax.net.ssl.TrustManager;
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import javax.net.ssl.TrustManagerFactory;
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import javax.net.ssl.X509TrustManager;
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import javax.swing.JOptionPane;
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import org.jackhuang.hmcl.setting.ConfigHolder;
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import org.jackhuang.hmcl.upgrade.UpdateHandler;
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public final class Main {
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public static void main(String[] args) {
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checkJavaFX();
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checkDirectoryPath();
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checkDSTRootCAX3();
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checkConfigPermission();
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if (UpdateHandler.processArguments(args)) {
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return;
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}
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ConfigHolder.init();
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Launcher.main(args);
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}
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private static void checkDirectoryPath() {
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String currentDirectory = new File("").getAbsolutePath();
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if (currentDirectory.contains("!")) {
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// No Chinese translation because both Swing and JavaFX cannot render Chinese character properly when exclamation mark exists in the path.
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showErrorAndExit("Exclamation mark(!) is not allowed in the path where HMCL is in.\n"
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+ "The path is " + currentDirectory);
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}
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}
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private static void checkJavaFX() {
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try {
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Class.forName("javafx.application.Application");
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} catch (ClassNotFoundException e) {
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showErrorAndExit(i18n("fatal.missing_javafx"));
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}
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}
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private static void checkDSTRootCAX3() {
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TrustManagerFactory tmf;
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try {
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tmf = TrustManagerFactory.getInstance(TrustManagerFactory.getDefaultAlgorithm());
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tmf.init((KeyStore) null);
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} catch (NoSuchAlgorithmException | KeyStoreException e) {
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LOG.log(Level.WARNING, "Failed to init TrustManagerFactory", e);
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// don't know what to do here
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return;
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}
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for (TrustManager tm : tmf.getTrustManagers()) {
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if (tm instanceof X509TrustManager) {
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for (X509Certificate cert : ((X509TrustManager) tm).getAcceptedIssuers()) {
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if ("CN=DST Root CA X3, O=Digital Signature Trust Co.".equals((cert.getSubjectDN().getName()))) {
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return;
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}
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}
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}
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}
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showWarningAndContinue(i18n("fatal.missing_dst_root_ca_x3"));
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}
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private static void checkConfigPermission() {
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Path config = ConfigHolder.CONFIG_PATH;
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if (Files.exists(config)) {
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if (Files.isReadable(config) && Files.isWritable(config)) {
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// we are able to read & write the existent config
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return;
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}
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} else {
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if (Files.isWritable(config.getParent())) {
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// we are able to create a new config
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return;
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}
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}
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showErrorAndExit(i18n("fatal.config_access_denied", config));
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}
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/**
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* Indicates that a fatal error has occurred, and that the application cannot start.
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*/
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private static void showErrorAndExit(String message) {
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System.err.println(message);
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System.err.println("A fatal error has occurred, forcibly exiting.");
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JOptionPane.showMessageDialog(null, message, "Error", JOptionPane.ERROR_MESSAGE);
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System.exit(1);
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}
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/**
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* Indicates that potential issues have been detected, and that the application may not function properly (but it can still run).
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*/
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private static void showWarningAndContinue(String message) {
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System.err.println(message);
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System.err.println("Potential issues have been detected.");
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JOptionPane.showMessageDialog(null, message, "Warning", JOptionPane.WARNING_MESSAGE);
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}
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}
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