102 lines
3.5 KiB
Java
102 lines
3.5 KiB
Java
/*
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* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4017728 4079849 6788196
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* @summary Check for correct Array Bounds check in read of FileInputStream and
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* RandomAccessFile
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*/
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import java.io.*;
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/*
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* The test calls the read(byte buf[] , int off , int len) of
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* FileInputStream with different values of off and len to see if the
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* IndexOutOfBoundsException is thrown. The read(...) method calls
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* readBytes(...) in native code(io_util.c). The read(...) method in
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* RandomAccessFile also calls the same native method. So one should
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* see similar results.
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*/
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public class ReadBytesBounds {
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static final FileInputStream fis;
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static final RandomAccessFile raf;
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static final byte[] b = new byte[32];
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static {
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try {
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String dir = System.getProperty("test.src", ".");
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File testFile = new File(dir, "input.txt");
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fis = new FileInputStream(testFile);
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raf = new RandomAccessFile(testFile , "r");
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} catch (Throwable t) {
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throw new Error(t);
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}
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}
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public static void main(String argv[]) throws Throwable {
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try {
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testRead(-1, -1, false);
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testRead(-1, 0, false);
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testRead( 0, -1, false);
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testRead( 0, 33, false);
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testRead(33, 0, false);
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testRead(33, 4, false);
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testRead( 0, 32, true);
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testRead(32, 0, true);
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testRead(32, 4, false);
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testRead( 4, 16, true);
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testRead( 1, 31, true);
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testRead( 0, 0, true);
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testRead(31, Integer.MAX_VALUE, false);
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testRead( 0, Integer.MAX_VALUE, false);
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testRead(-1, Integer.MAX_VALUE, false);
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testRead(-4, Integer.MIN_VALUE, false);
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testRead( 0, Integer.MIN_VALUE, false);
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} finally {
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fis.close();
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raf.close();
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}
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}
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static void testRead(int off, int len, boolean expected) throws Throwable {
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System.err.printf("off=%d len=%d expected=%b%n", off, len, expected);
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boolean result;
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try {
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fis.read(b, off, len);
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raf.read(b, off, len);
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result = true;
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} catch (IndexOutOfBoundsException e) {
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result = false;
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}
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if (result != expected) {
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throw new RuntimeException
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(String.format("Unexpected result off=%d len=%d expected=%b",
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off, len, expected));
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}
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}
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}
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