| /* |
| * Copyright (c) 1997, 2010, 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. |
| */ |
| |
| /* |
| * @test |
| * @bug 4017728 4079849 6788196 |
| * @summary Check for correct Array Bounds check in read of FileInputStream and |
| * RandomAccessFile |
| */ |
| |
| import java.io.*; |
| |
| /* |
| * The test calls the read(byte buf[] , int off , int len) of |
| * FileInputStream with different values of off and len to see if the |
| * IndexOutOfBoundsException is thrown. The read(...) method calls |
| * readBytes(...) in native code(io_util.c). The read(...) method in |
| * RandomAccessFile also calls the same native method. So one should |
| * see similar results. |
| */ |
| |
| public class ReadBytesBounds { |
| |
| static final FileInputStream fis; |
| static final RandomAccessFile raf; |
| static final byte[] b = new byte[32]; |
| |
| static { |
| try { |
| String dir = System.getProperty("test.src", "."); |
| File testFile = new File(dir, "input.txt"); |
| fis = new FileInputStream(testFile); |
| raf = new RandomAccessFile(testFile , "r"); |
| } catch (Throwable t) { |
| throw new Error(t); |
| } |
| } |
| |
| public static void main(String argv[]) throws Throwable { |
| try { |
| testRead(-1, -1, false); |
| testRead(-1, 0, false); |
| testRead( 0, -1, false); |
| testRead( 0, 33, false); |
| testRead(33, 0, false); |
| testRead(33, 4, false); |
| testRead( 0, 32, true); |
| testRead(32, 0, true); |
| testRead(32, 4, false); |
| testRead( 4, 16, true); |
| testRead( 1, 31, true); |
| testRead( 0, 0, true); |
| testRead(31, Integer.MAX_VALUE, false); |
| testRead( 0, Integer.MAX_VALUE, false); |
| testRead(-1, Integer.MAX_VALUE, false); |
| testRead(-4, Integer.MIN_VALUE, false); |
| testRead( 0, Integer.MIN_VALUE, false); |
| } finally { |
| fis.close(); |
| raf.close(); |
| } |
| } |
| |
| static void testRead(int off, int len, boolean expected) throws Throwable { |
| System.err.printf("off=%d len=%d expected=%b%n", off, len, expected); |
| boolean result; |
| try { |
| fis.read(b, off, len); |
| raf.read(b, off, len); |
| result = true; |
| } catch (IndexOutOfBoundsException e) { |
| result = false; |
| } |
| |
| if (result != expected) { |
| throw new RuntimeException |
| (String.format("Unexpected result off=%d len=%d expected=%b", |
| off, len, expected)); |
| } |
| } |
| } |