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/*
* 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);
}
}
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