| /* |
| * Copyright (c) 2013 Google Inc. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /** |
| * @test |
| * @summary Test java.util.zip behavior with ~64k entries |
| * @run main/othervm EntryCount64k |
| * @run main/othervm -Djdk.util.zip.inhibitZip64=true EntryCount64k |
| * @run main/othervm -Djdk.util.zip.inhibitZip64=false EntryCount64k |
| */ |
| |
| import java.io.*; |
| import java.util.*; |
| import java.util.zip.*; |
| |
| public class EntryCount64k { |
| |
| public static void main(String[] args) throws Exception { |
| for (int i = (1 << 16) - 2; i < (1 << 16) + 2; i++) |
| test(i); |
| } |
| |
| static void test(int entryCount) throws Exception { |
| File zipFile = new File("EntryCount64k-tmp.zip"); |
| zipFile.delete(); |
| |
| try (ZipOutputStream zos = |
| new ZipOutputStream( |
| new BufferedOutputStream( |
| new FileOutputStream(zipFile)))) { |
| for (int i = 0; i < entryCount; i++) { |
| ZipEntry e = new ZipEntry(Integer.toString(i)); |
| zos.putNextEntry(e); |
| zos.closeEntry(); |
| } |
| } |
| |
| String p = System.getProperty("jdk.util.zip.inhibitZip64"); |
| boolean tooManyEntries = entryCount >= (1 << 16) - 1; |
| boolean shouldUseZip64 = tooManyEntries & !("true".equals(p)); |
| boolean usesZip64 = usesZip64(zipFile); |
| String details = String.format |
| ("entryCount=%d shouldUseZip64=%s usesZip64=%s zipSize=%d%n", |
| entryCount, shouldUseZip64, usesZip64, zipFile.length()); |
| System.err.println(details); |
| checkCanRead(zipFile, entryCount); |
| if (shouldUseZip64 != usesZip64) |
| throw new Error(details); |
| zipFile.delete(); |
| } |
| |
| static boolean usesZip64(File zipFile) throws Exception { |
| RandomAccessFile raf = new RandomAccessFile(zipFile, "r"); |
| byte[] buf = new byte[4096]; |
| raf.seek(raf.length() - buf.length); |
| raf.read(buf); |
| for (int i = 0; i < buf.length - 4; i++) { |
| // Look for ZIP64 End Header Signature |
| // Phil Katz: yes, we will always remember you |
| if (buf[i+0] == 'P' && |
| buf[i+1] == 'K' && |
| buf[i+2] == 6 && |
| buf[i+3] == 6) |
| return true; |
| } |
| return false; |
| } |
| |
| static void checkCanRead(File zipFile, int entryCount) throws Exception { |
| // Check ZipInputStream API |
| try (ZipInputStream zis = |
| new ZipInputStream( |
| new BufferedInputStream( |
| new FileInputStream(zipFile)))) { |
| for (int i = 0; i < entryCount; i++) { |
| ZipEntry e = zis.getNextEntry(); |
| if (Integer.parseInt(e.getName()) != i) |
| throw new AssertionError(); |
| } |
| if (zis.getNextEntry() != null) |
| throw new AssertionError(); |
| } |
| |
| // Check ZipFile API |
| try (ZipFile zf = new ZipFile(zipFile)) { |
| Enumeration<? extends ZipEntry> en = zf.entries(); |
| for (int i = 0; i < entryCount; i++) { |
| ZipEntry e = en.nextElement(); |
| if (Integer.parseInt(e.getName()) != i) |
| throw new AssertionError(); |
| } |
| if (en.hasMoreElements() |
| || (zf.size() != entryCount) |
| || (zf.getEntry(Integer.toString(entryCount - 1)) == null) |
| || (zf.getEntry(Integer.toString(entryCount)) != null)) |
| throw new AssertionError(); |
| } |
| } |
| } |