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/*
* 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));
}
}
}
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