undefect. CWE-407 — 63 sites patched across 27 ecosystems
Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com Patches, unit tests, benchmarks, whitepaper, and outreach briefs. Public domain — no copyright claimed. Use freely.
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test/jdk/java/nio/file/Files/InputStreamTest.java
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test/jdk/java/nio/file/Files/InputStreamTest.java
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/*
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* Copyright (c) 2019, 2024, 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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/* @test
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* @bug 8227609 8233451
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* @summary Test of InputStream and OutputStream created by java.nio.file.Files
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* @library .. /test/lib
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* @build jdk.test.lib.Platform
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* @run junit/othervm --enable-native-access=ALL-UNNAMED InputStreamTest
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*/
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.InputStream;
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import java.io.IOException;
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import java.io.OutputStream;
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import java.lang.foreign.Arena;
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import java.lang.foreign.FunctionDescriptor;
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import java.lang.foreign.Linker;
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import java.lang.foreign.MemorySegment;
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import java.lang.foreign.SymbolLookup;
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import java.lang.foreign.ValueLayout;
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import java.lang.invoke.MethodHandle;
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import java.nio.channels.ClosedChannelException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.util.Arrays;
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import jdk.test.lib.Platform;
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import org.junit.jupiter.api.AfterAll;
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import org.junit.jupiter.api.BeforeAll;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.condition.DisabledOnOs;
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import org.junit.jupiter.api.condition.OS;
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import static org.junit.jupiter.api.Assertions.*;
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public class InputStreamTest {
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private static final String PIPE = "pipe";
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private static final Path PIPE_PATH = Path.of(PIPE);
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private static final String SENTENCE =
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"Tout est permis mais rien n’est possible";
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private static Path TMPDIR;
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private static class mkfifo {
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public static final FunctionDescriptor DESC = FunctionDescriptor.of(
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ValueLayout.JAVA_INT,
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ValueLayout.ADDRESS,
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ValueLayout.JAVA_SHORT
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);
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public static final MemorySegment ADDR;
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static {
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Linker linker = Linker.nativeLinker();
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SymbolLookup stdlib = linker.defaultLookup();
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ADDR = stdlib.find("mkfifo").orElseThrow();
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}
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public static final MethodHandle HANDLE =
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Linker.nativeLinker().downcallHandle(ADDR, DESC);
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}
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public static int mkfifo(MemorySegment x0, short x1) {
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var mh$ = mkfifo.HANDLE;
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try {
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return (int)mh$.invokeExact(x0, x1);
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} catch (Throwable ex$) {
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throw new AssertionError("should not reach here", ex$);
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}
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}
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private static Thread createWriteThread() {
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Thread t = new Thread(
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new Runnable() {
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public void run() {
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try (FileOutputStream fos = new FileOutputStream(PIPE);) {
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fos.write(SENTENCE.getBytes());
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} catch (IOException e) {
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throw new RuntimeException(e);
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}
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}
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}
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);
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t.start();
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return t;
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}
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@BeforeAll
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static void before() throws InterruptedException, IOException {
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TMPDIR = TestUtil.createTemporaryDirectory();
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if (Platform.isWindows())
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return;
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Files.deleteIfExists(PIPE_PATH);
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try (var newArena = Arena.ofConfined()) {
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var addr = newArena.allocateFrom(PIPE);
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short mode = 0666;
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assertEquals(0, mkfifo(addr, mode));
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}
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if (Files.notExists(PIPE_PATH))
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throw new RuntimeException("Failed to create " + PIPE);
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}
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@AfterAll
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static void after() throws IOException {
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TestUtil.removeAll(TMPDIR);
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if (Platform.isWindows())
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return;
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Files.deleteIfExists(PIPE_PATH);
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}
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/**
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* Tests Files.newInputStream(Path).skip().
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*/
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@Test
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void skip() throws IOException {
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Path file = Files.createFile(TMPDIR.resolve("foo"));
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try (OutputStream out = Files.newOutputStream(file)) {
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final int size = 512;
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byte[] blah = new byte[size];
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for (int i = 0; i < size; i++) {
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blah[i] = (byte)(i % 128);
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}
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out.write(blah);
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out.close();
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try (InputStream in = Files.newInputStream(file)) {
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assertTrue(in.available() == size);
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assertTrue(in.skip(size/4) == size/4); // 0.25
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assertTrue(in.available() == 3*size/4);
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int b = in.read();
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assertTrue(b == blah[size/4]);
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assertTrue(in.available() == 3*size/4 - 1);
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assertTrue(in.skip(-1) == -1); // 0.25
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assertTrue(in.available() == 3*size/4);
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assertTrue(in.skip(-size/2) == -size/4); // 0
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assertTrue(in.available() == size);
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assertTrue(in.skip(5*size/4) == size); // 1.0
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assertTrue(in.available() == 0);
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assertTrue(in.skip(-3*size/4) == -3*size/4); // 0.25
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assertTrue(in.available() == 3*size/4);
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byte[] buf = new byte[16];
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in.read(buf, 2, 12);
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assertTrue(Arrays.equals(buf, 2, 14,
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blah, size/4, size/4 + 12));
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assertTrue(in.skip(-12) == -12); // 0.25
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assertTrue(in.skip(3*size/4) == 3*size/4); // 1.0
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assertTrue(in.available() == 0);
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assertTrue(in.skip(-size/2) == -size/2); // 0.5
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assertTrue(in.available() == size/2);
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assertTrue(in.skip(-size) == -size/2); // 0
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assertTrue(in.available() == size);
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assertTrue(in.skip(size/2) == size/2); // 0.5
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assertTrue(in.available() == size/2);
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assertTrue(in.skip(Long.MIN_VALUE) == -size/2); // 0
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assertTrue(in.available() == size);
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assertTrue(in.skip(size/2) == size/2); // 0.5
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assertTrue(in.available() == size/2);
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assertTrue(in.skip(Long.MAX_VALUE - size/4) == size/2);
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assertTrue(in.available() == 0);
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in.close();
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try {
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in.skip(1);
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throw new RuntimeException("skip() did not fail");
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} catch (IOException ioe) {
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if (!(ioe instanceof ClosedChannelException)) {
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throw new RuntimeException
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("IOException is not a ClosedChannelException");
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}
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}
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}
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}
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}
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/**
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* Tests that Files.newInputStream(Path).available() does not throw
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*/
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@Test
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@DisabledOnOs(OS.WINDOWS)
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void availableStdin() throws IOException {
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Path stdin = Path.of("/dev", "stdin");
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if (Files.exists(stdin)) {
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try (InputStream s = Files.newInputStream(stdin);) {
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s.available();
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}
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}
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}
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/**
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* Tests that Files.newInputStream(Path).skip(0) does not throw
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*/
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@Test
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@DisabledOnOs(OS.WINDOWS)
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void skipStdin() throws IOException {
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Path stdin = Path.of("/dev", "stdin");
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if (Files.exists(stdin)) {
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try (InputStream s = Files.newInputStream(stdin);) {
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s.skip(0);
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}
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}
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}
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/**
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* Tests Files.newInputStream(Path).readAllBytes().
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*/
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@Test
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@DisabledOnOs(OS.WINDOWS)
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void readAllBytes() throws InterruptedException, IOException {
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Thread t = createWriteThread();
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try (InputStream in = Files.newInputStream(Path.of(PIPE))) {
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String s = new String(in.readAllBytes());
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System.out.println(s);
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assertEquals(SENTENCE, s);
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} finally {
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t.join();
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}
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}
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/**
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* Tests Files.newInputStream(Path).readNBytes(byte[],int,int).
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*/
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@Test
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@DisabledOnOs(OS.WINDOWS)
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void readNBytesNoOverride() throws InterruptedException, IOException {
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Thread t = createWriteThread();
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try (InputStream in = Files.newInputStream(Path.of(PIPE))) {
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final int offset = 11;
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final int length = 17;
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assert length <= SENTENCE.length();
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byte[] b = new byte[offset + length];
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int n = in.readNBytes(b, offset, length);
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String s = new String(b, offset, length);
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System.out.println(s);
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assertEquals(SENTENCE.substring(0, length), s);
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} finally {
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t.join();
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}
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}
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/**
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* Tests Files.newInputStream(Path).readNBytes(int).
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*/
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@Test
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@DisabledOnOs(OS.WINDOWS)
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void readNBytesOverride() throws InterruptedException, IOException {
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Thread t = createWriteThread();
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try (InputStream in = Files.newInputStream(Path.of(PIPE))) {
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final int length = 17;
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assert length <= SENTENCE.length();
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byte[] b = in.readNBytes(length);
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String s = new String(b);
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System.out.println(s);
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assertEquals(SENTENCE.substring(0, length), s);
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} finally {
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t.join();
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}
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}
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}
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