94 lines
3.5 KiB
Java
94 lines
3.5 KiB
Java
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/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing,
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* software distributed under the License is distributed on an
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* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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* KIND, either express or implied. See the License for the
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* specific language governing permissions and limitations
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* under the License.
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*/
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import java.io.IOException;
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import java.io.InputStream;
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import java.net.Authenticator;
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import java.net.PasswordAuthentication;
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import java.net.URI;
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import java.net.URL;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import java.nio.file.StandardCopyOption;
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import java.util.concurrent.ThreadLocalRandom;
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public final class MavenWrapperDownloader {
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private static final String WRAPPER_VERSION = "3.3.2";
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private static final boolean VERBOSE = Boolean.parseBoolean(System.getenv("MVNW_VERBOSE"));
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public static void main(String[] args) {
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log("Apache Maven Wrapper Downloader " + WRAPPER_VERSION);
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if (args.length != 2) {
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System.err.println(" - ERROR wrapperUrl or wrapperJarPath parameter missing");
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System.exit(1);
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}
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try {
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log(" - Downloader started");
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final URL wrapperUrl = URI.create(args[0]).toURL();
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final String jarPath = args[1].replace("..", ""); // Sanitize path
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final Path wrapperJarPath = Paths.get(jarPath).toAbsolutePath().normalize();
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downloadFileFromURL(wrapperUrl, wrapperJarPath);
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log("Done");
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} catch (IOException e) {
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System.err.println("- Error downloading: " + e.getMessage());
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if (VERBOSE) {
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e.printStackTrace();
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}
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System.exit(1);
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}
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}
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private static void downloadFileFromURL(URL wrapperUrl, Path wrapperJarPath)
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throws IOException {
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log(" - Downloading to: " + wrapperJarPath);
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if (System.getenv("MVNW_USERNAME") != null && System.getenv("MVNW_PASSWORD") != null) {
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final String username = System.getenv("MVNW_USERNAME");
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final char[] password = System.getenv("MVNW_PASSWORD").toCharArray();
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Authenticator.setDefault(new Authenticator() {
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@Override
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protected PasswordAuthentication getPasswordAuthentication() {
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return new PasswordAuthentication(username, password);
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}
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});
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}
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Path temp = wrapperJarPath
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.getParent()
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.resolve(wrapperJarPath.getFileName() + "."
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+ Long.toUnsignedString(ThreadLocalRandom.current().nextLong()) + ".tmp");
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try (InputStream inStream = wrapperUrl.openStream()) {
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Files.copy(inStream, temp, StandardCopyOption.REPLACE_EXISTING);
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Files.move(temp, wrapperJarPath, StandardCopyOption.REPLACE_EXISTING);
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} finally {
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Files.deleteIfExists(temp);
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}
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log(" - Downloader complete");
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}
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private static void log(String msg) {
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if (VERBOSE) {
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System.out.println(msg);
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}
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}
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}
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