| /* |
| * Copyright (c) 2017, Oracle and/or its affiliates. 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. |
| */ |
| |
| import static java.util.zip.ZipFile.CENOFF; |
| import static java.util.zip.ZipFile.CENTIM; |
| import static java.util.zip.ZipFile.ENDHDR; |
| import static java.util.zip.ZipFile.ENDOFF; |
| import static java.util.zip.ZipFile.LOCTIM; |
| |
| import java.io.IOException; |
| import java.io.InputStream; |
| import java.io.OutputStream; |
| import java.net.URI; |
| import java.nio.file.FileSystem; |
| import java.nio.file.FileSystems; |
| import java.nio.file.Files; |
| import java.nio.file.Path; |
| import java.nio.file.attribute.BasicFileAttributes; |
| import java.time.Instant; |
| import java.time.LocalDate; |
| import java.time.LocalDateTime; |
| import java.time.ZoneId; |
| import java.util.Collections; |
| import java.util.zip.ZipEntry; |
| import java.util.zip.ZipOutputStream; |
| |
| /* @test |
| * @bug 8184940 8186227 8188869 |
| * @summary JDK 9 rejects zip files where the modified day or month is 0 |
| * or otherwise represent an invalid date, such as 1980-02-30 24:60:60 |
| * @author Liam Miller-Cushon |
| * @modules jdk.zipfs |
| */ |
| public class ZeroDate { |
| |
| public static void main(String[] args) throws Exception { |
| // create a zip file, and read it in as a byte array |
| Path path = Files.createTempFile("bad", ".zip"); |
| try (OutputStream os = Files.newOutputStream(path); |
| ZipOutputStream zos = new ZipOutputStream(os)) { |
| ZipEntry e = new ZipEntry("x"); |
| zos.putNextEntry(e); |
| zos.write((int) 'x'); |
| } |
| int len = (int) Files.size(path); |
| byte[] data = new byte[len]; |
| try (InputStream is = Files.newInputStream(path)) { |
| is.read(data); |
| } |
| Files.delete(path); |
| |
| // year, month, day are zero |
| testDate(data.clone(), 0, LocalDate.of(1979, 11, 30).atStartOfDay()); |
| // only year is zero |
| testDate(data.clone(), 0 << 25 | 4 << 21 | 5 << 16, LocalDate.of(1980, 4, 5).atStartOfDay()); |
| // month is greater than 12 |
| testDate(data.clone(), 0 << 25 | 13 << 21 | 1 << 16, LocalDate.of(1981, 1, 1).atStartOfDay()); |
| // 30th of February |
| testDate(data.clone(), 0 << 25 | 2 << 21 | 30 << 16, LocalDate.of(1980, 3, 1).atStartOfDay()); |
| // 30th of February, 24:60:60 |
| testDate(data.clone(), 0 << 25 | 2 << 21 | 30 << 16 | 24 << 11 | 60 << 5 | 60 >> 1, |
| LocalDateTime.of(1980, 3, 2, 1, 1, 0)); |
| } |
| |
| private static void testDate(byte[] data, int date, LocalDateTime expected) throws IOException { |
| // set the datetime |
| int endpos = data.length - ENDHDR; |
| int cenpos = u16(data, endpos + ENDOFF); |
| int locpos = u16(data, cenpos + CENOFF); |
| writeU32(data, cenpos + CENTIM, date); |
| writeU32(data, locpos + LOCTIM, date); |
| |
| // ensure that the archive is still readable, and the date is 1979-11-30 |
| Path path = Files.createTempFile("out", ".zip"); |
| try (OutputStream os = Files.newOutputStream(path)) { |
| os.write(data); |
| } |
| URI uri = URI.create("jar:" + path.toUri()); |
| try (FileSystem fs = FileSystems.newFileSystem(uri, Collections.emptyMap())) { |
| Path entry = fs.getPath("x"); |
| Instant actualInstant = |
| Files.readAttributes(entry, BasicFileAttributes.class) |
| .lastModifiedTime() |
| .toInstant(); |
| Instant expectedInstant = |
| expected.atZone(ZoneId.systemDefault()).toInstant(); |
| if (!actualInstant.equals(expectedInstant)) { |
| throw new AssertionError( |
| String.format("actual: %s, expected: %s", actualInstant, expectedInstant)); |
| } |
| } finally { |
| Files.delete(path); |
| } |
| } |
| |
| static int u8(byte[] data, int offset) { |
| return data[offset] & 0xff; |
| } |
| |
| static int u16(byte[] data, int offset) { |
| return u8(data, offset) + (u8(data, offset + 1) << 8); |
| } |
| |
| private static void writeU32(byte[] data, int pos, int value) { |
| data[pos] = (byte) (value & 0xff); |
| data[pos + 1] = (byte) ((value >> 8) & 0xff); |
| data[pos + 2] = (byte) ((value >> 16) & 0xff); |
| data[pos + 3] = (byte) ((value >> 24) & 0xff); |
| } |
| } |