J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2006 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /** |
| 25 | * @test |
| 26 | * @bug 4879507 |
| 27 | * @summary ZipInputStream does not check CRC for stored (uncompressed) files |
| 28 | * @author Dave Bristor |
| 29 | */ |
| 30 | |
| 31 | import java.io.*; |
| 32 | import java.util.Arrays; |
| 33 | import java.util.zip.*; |
| 34 | |
| 35 | public class StoredCRC { |
| 36 | public static void realMain(String[] args) throws Throwable { |
| 37 | |
| 38 | ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| 39 | ZipOutputStream zos = new ZipOutputStream(baos); |
| 40 | |
| 41 | ZipEntry ze = new ZipEntry("test"); |
| 42 | ze.setMethod(ZipOutputStream.STORED); |
| 43 | |
| 44 | String writtenString = "hello, world"; |
| 45 | byte[] writtenData = writtenString.getBytes("ASCII"); |
| 46 | ze.setSize(writtenData.length); |
| 47 | CRC32 crc = new CRC32(); |
| 48 | crc.update(writtenData); |
| 49 | ze.setCrc(crc.getValue()); |
| 50 | |
| 51 | zos.putNextEntry(ze); |
| 52 | zos.write(writtenData, 0, writtenData.length); |
| 53 | zos.close(); |
| 54 | |
| 55 | byte[] data = baos.toByteArray(); |
| 56 | |
| 57 | // Run with an arg to create a test file that can be used to figure |
| 58 | // out what position in the data stream can be changed. |
| 59 | if (args.length > 0) { |
| 60 | FileOutputStream fos = new FileOutputStream("stored.zip"); |
| 61 | fos.write(data, 0, data.length); |
| 62 | fos.close(); |
| 63 | } else { |
| 64 | // Test that reading byte-at-a-time works |
| 65 | ZipInputStream zis = new ZipInputStream( |
| 66 | new ByteArrayInputStream(data)); |
| 67 | ze = zis.getNextEntry(); |
| 68 | int pos = 0; |
| 69 | byte[] readData = new byte[256]; |
| 70 | try { |
| 71 | int count = zis.read(readData, pos, 1); |
| 72 | while (count > 0) { |
| 73 | count = zis.read(readData, ++pos, 1); |
| 74 | } |
| 75 | check(writtenString.equals(new String(readData, 0, pos, "ASCII"))); |
| 76 | } catch (Throwable t) { |
| 77 | unexpected(t); |
| 78 | } |
| 79 | |
| 80 | // Test that data corruption is detected. Offset 39 was |
| 81 | // determined to be in the entry's uncompressed data. |
| 82 | data[39] ^= 1; |
| 83 | |
| 84 | zis = new ZipInputStream( |
| 85 | new ByteArrayInputStream(data)); |
| 86 | ze = zis.getNextEntry(); |
| 87 | |
| 88 | try { |
| 89 | zis.read(readData, 0, readData.length); |
| 90 | fail("Did not catch expected ZipException" ); |
| 91 | } catch (ZipException ex) { |
| 92 | String msg = ex.getMessage(); |
| 93 | check(msg != null && msg.startsWith("invalid entry CRC (expected 0x")); |
| 94 | } catch (Throwable t) { |
| 95 | unexpected(t); |
| 96 | } |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | //--------------------- Infrastructure --------------------------- |
| 101 | static volatile int passed = 0, failed = 0; |
| 102 | static boolean pass() {passed++; return true;} |
| 103 | static boolean fail() {failed++; Thread.dumpStack(); return false;} |
| 104 | static boolean fail(String msg) {System.out.println(msg); return fail();} |
| 105 | static void unexpected(Throwable t) {failed++; t.printStackTrace();} |
| 106 | static boolean check(boolean cond) {if (cond) pass(); else fail(); return cond;} |
| 107 | static boolean equal(Object x, Object y) { |
| 108 | if (x == null ? y == null : x.equals(y)) return pass(); |
| 109 | else return fail(x + " not equal to " + y);} |
| 110 | public static void main(String[] args) throws Throwable { |
| 111 | try {realMain(args);} catch (Throwable t) {unexpected(t);} |
| 112 | System.out.println("\nPassed = " + passed + " failed = " + failed); |
| 113 | if (failed > 0) throw new AssertionError("Some tests failed");} |
| 114 | } |