1 /*
   2  * Copyright (c) 2006, 2016, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 4225317 6969651
  27  * @modules jdk.jartool
  28  * @summary Check extracted files have date as per those in the .jar file
  29  */
  30 
  31 import java.io.File;
  32 import java.io.PrintWriter;
  33 import java.nio.file.attribute.FileTime;
  34 import java.util.Date;
  35 import java.util.TimeZone;
  36 import java.util.spi.ToolProvider;
  37 
  38 public class JarEntryTime {
  39     static final ToolProvider JAR_TOOL = ToolProvider.findFirst("jar")
  40         .orElseThrow(() ->
  41             new RuntimeException("jar tool not found")
  42         );
  43 
  44 
  45     // ZipEntry's mod date has 2 seconds precision: give extra time to
  46     // allow for e.g. rounding/truncation and networked/samba drives.
  47     static final long PRECISION = 10000L;
  48 
  49     static final TimeZone TZ = TimeZone.getDefault();
  50     static final boolean DST = TZ.inDaylightTime(new Date());
  51 
  52     static boolean cleanup(File dir) throws Throwable {
  53         boolean rc = true;
  54         File[] x = dir.listFiles();
  55         if (x != null) {
  56             for (int i = 0; i < x.length; i++) {
  57                 rc &= x[i].delete();
  58             }
  59         }
  60         return rc & dir.delete();
  61     }
  62 
  63     static void extractJar(File jarFile, boolean useExtractionTime) throws Throwable {
  64         String javahome = System.getProperty("java.home");
  65         String jarcmd = javahome + File.separator + "bin" + File.separator + "jar";
  66         String[] args;
  67         if (useExtractionTime) {
  68             args = new String[] {
  69                 jarcmd,
  70                 "-J-Dsun.tools.jar.useExtractionTime=true",
  71                 "xf",
  72                 jarFile.getName() };
  73         } else {
  74             args = new String[] {
  75                 jarcmd,
  76                 "xf",
  77                 jarFile.getName() };
  78         }
  79         Process p = Runtime.getRuntime().exec(args);
  80         check(p != null && (p.waitFor() == 0));
  81     }
  82 
  83     public static void realMain(String[] args) throws Throwable {
  84 
  85         File dirOuter = new File("outer");
  86         File dirInner = new File(dirOuter, "inner");
  87         File jarFile = new File("JarEntryTime.jar");
  88         File testFile = new File("JarEntryTimeTest.txt");
  89 
  90         // Remove any leftovers from prior run
  91         cleanup(dirInner);
  92         cleanup(dirOuter);
  93         jarFile.delete();
  94         testFile.delete();
  95 
  96         /* Create a directory structure
  97          * outer/
  98          *     inner/
  99          *         foo.txt
 100          * Set the lastModified dates so that outer is created now, inner
 101          * yesterday, and foo.txt created "earlier".
 102          */
 103         check(dirOuter.mkdir());
 104         check(dirInner.mkdir());
 105         File fileInner = new File(dirInner, "foo.txt");
 106         try (PrintWriter pw = new PrintWriter(fileInner)) {
 107             pw.println("hello, world");
 108         }
 109 
 110         // Get the "now" from the "last-modified-time" of the last file we
 111         // just created, instead of the "System.currentTimeMillis()", to
 112         // workaround the possible "time difference" due to nfs.
 113         final long now = fileInner.lastModified();
 114         final long earlier = now - (60L * 60L * 6L * 1000L);
 115         final long yesterday = now - (60L * 60L * 24L * 1000L);
 116 
 117         check(dirOuter.setLastModified(now));
 118         check(dirInner.setLastModified(yesterday));
 119         check(fileInner.setLastModified(earlier));
 120 
 121         // Make a jar file from that directory structure
 122         check(JAR_TOOL.run(System.out, System.err,
 123                            "cf", jarFile.getName(), dirOuter.getName()) == 0);
 124         check(jarFile.exists());
 125 
 126         check(cleanup(dirInner));
 127         check(cleanup(dirOuter));
 128 
 129         // Extract and check that the last modified values are those specified
 130         // in the archive
 131         extractJar(jarFile, false);
 132         check(dirOuter.exists());
 133         check(dirInner.exists());
 134         check(fileInner.exists());
 135         checkFileTime(dirOuter.lastModified(), now);
 136         checkFileTime(dirInner.lastModified(), yesterday);
 137         checkFileTime(fileInner.lastModified(), earlier);
 138 
 139         check(cleanup(dirInner));
 140         check(cleanup(dirOuter));
 141 
 142         try (PrintWriter pw = new PrintWriter(testFile)) {
 143             pw.println("hello, world");
 144         }
 145         final long start = testFile.lastModified();
 146 
 147         // Extract and check the last modified values are the current times.
 148         extractJar(jarFile, true);
 149 
 150         try (PrintWriter pw = new PrintWriter(testFile)) {
 151             pw.println("hello, world");
 152         }
 153         final long end = testFile.lastModified();
 154 
 155         check(dirOuter.exists());
 156         check(dirInner.exists());
 157         check(fileInner.exists());
 158         checkFileTime(start, dirOuter.lastModified(), end);
 159         checkFileTime(start, dirInner.lastModified(), end);
 160         checkFileTime(start, fileInner.lastModified(), end);
 161 
 162         check(cleanup(dirInner));
 163         check(cleanup(dirOuter));
 164 
 165         check(jarFile.delete());
 166         check(testFile.delete());
 167     }
 168 
 169     static void checkFileTime(long now, long original) {
 170         if (isTimeSettingChanged()) {
 171             return;
 172         }
 173 
 174         if (Math.abs(now - original) > PRECISION) {
 175             System.out.format("Extracted to %s, expected to be close to %s%n",
 176                 FileTime.fromMillis(now), FileTime.fromMillis(original));
 177             fail();
 178         }
 179     }
 180 
 181     static void checkFileTime(long start, long now, long end) {
 182         if (isTimeSettingChanged()) {
 183             return;
 184         }
 185 
 186         if (now < start || now > end) {
 187             System.out.format("Extracted to %s, "
 188                               + "expected to be after %s and before %s%n",
 189                               FileTime.fromMillis(now),
 190                               FileTime.fromMillis(start),
 191                               FileTime.fromMillis(end));
 192             fail();
 193         }
 194     }
 195 
 196     private static boolean isTimeSettingChanged() {
 197         TimeZone currentTZ = TimeZone.getDefault();
 198         boolean currentDST = currentTZ.inDaylightTime(new Date());
 199         return (!currentTZ.equals(TZ) || currentDST != DST);
 200     }
 201 
 202     //--------------------- Infrastructure ---------------------------
 203     static volatile int passed = 0, failed = 0;
 204     static void pass() {passed++;}
 205     static void fail() {failed++; Thread.dumpStack();}
 206     static void fail(String msg) {System.out.println(msg); fail();}
 207     static void unexpected(Throwable t) {failed++; t.printStackTrace();}
 208     static void check(boolean cond) {if (cond) pass(); else fail();}
 209     static void equal(Object x, Object y) {
 210         if (x == null ? y == null : x.equals(y)) pass();
 211         else fail(x + " not equal to " + y);}
 212     public static void main(String[] args) throws Throwable {
 213         try {realMain(args);} catch (Throwable t) {unexpected(t);}
 214         System.out.println("\nPassed = " + passed + " failed = " + failed);
 215         if (failed > 0) throw new AssertionError("Some tests failed");}
 216 }