81 lines
2.8 KiB
Java
81 lines
2.8 KiB
Java
/*-
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* ~~~~~~licensing~~~~~~
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* base-support
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* ==========
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* Copyright (C) 2020 - 2021 EmDev LLC
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* ==========
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* 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, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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* ~~~~~~/licensing~~~~~~
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*/
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package ru.entaxy.platform.base.support.osgi;
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import java.io.ByteArrayInputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.io.InputStream;
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import java.nio.file.Files;
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import java.util.jar.JarFile;
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import java.util.jar.Manifest;
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import java.util.zip.CRC32;
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import java.util.zip.ZipEntry;
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import java.util.zip.ZipInputStream;
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import java.util.zip.ZipOutputStream;
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import org.osgi.framework.Constants;
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public class BundleUtils {
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public static File fixBundleWithUpdateLocation(InputStream is, String uri) throws IOException {
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File file = Files.createTempFile("update-", ".jar").toFile();
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try (ZipInputStream zis = new ZipInputStream(is);
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ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(file))) {
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byte[] buf = new byte[8192];
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zos.setLevel(0);
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while (true) {
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ZipEntry entry = zis.getNextEntry();
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if (entry == null) {
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break;
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}
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ByteArrayOutputStream baos = new ByteArrayOutputStream();
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int n;
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while (-1 != (n = zis.read(buf))) {
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baos.write(buf, 0, n);
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}
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if (entry.getName().equals(JarFile.MANIFEST_NAME)) {
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Manifest man = new Manifest(new ByteArrayInputStream(baos.toByteArray()));
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if (man.getMainAttributes().getValue(Constants.BUNDLE_UPDATELOCATION) == null) {
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man.getMainAttributes().putValue(Constants.BUNDLE_UPDATELOCATION, uri);
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}
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baos.reset();
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man.write(baos);
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}
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byte[] data = baos.toByteArray();
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CRC32 crc = new CRC32();
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crc.update(data);
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entry = new ZipEntry(entry.getName());
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entry.setSize(data.length);
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entry.setCrc(crc.getValue());
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zos.putNextEntry(entry);
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zos.write(data);
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zis.closeEntry();
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zos.closeEntry();
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}
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}
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return file;
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}
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}
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