382 lines
15 KiB
Java
382 lines
15 KiB
Java
/*
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* Copyright (c) 2014, 2017, 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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/*
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* @test
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* @summary SharedArchiveConsistency
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* @requires vm.cds
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* @library /test/lib
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* @modules java.base/jdk.internal.misc
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* java.compiler
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* java.management
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* jdk.jartool/sun.tools.jar
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* jdk.internal.jvmstat/sun.jvmstat.monitor
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* @build sun.hotspot.WhiteBox
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* @compile test-classes/Hello.java
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* @run driver ClassFileInstaller sun.hotspot.WhiteBox
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* @run main/othervm -Xbootclasspath/a:. -XX:+UnlockDiagnosticVMOptions -XX:+WhiteBoxAPI SharedArchiveConsistency
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*/
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import jdk.test.lib.process.OutputAnalyzer;
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import jdk.test.lib.Utils;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.IOException;
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import java.nio.ByteBuffer;
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import java.nio.ByteOrder;
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import java.nio.channels.FileChannel;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.Paths;
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import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
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import java.nio.file.StandardOpenOption;
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import static java.nio.file.StandardOpenOption.READ;
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import static java.nio.file.StandardOpenOption.WRITE;
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import java.util.ArrayList;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Random;
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import sun.hotspot.WhiteBox;
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public class SharedArchiveConsistency {
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public static WhiteBox wb;
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public static int offset_magic; // FileMapHeader::_magic
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public static int sp_offset_crc; // FileMapHeader::space_info::_crc
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public static int file_header_size = -1;// total size of header, variant, need calculation
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public static int space_info_size; // size of space_info
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public static int sp_offset; // offset of FileMapHeader::space_info
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public static int sp_used_offset; // offset of space_info::_used
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public static int size_t_size; // size of size_t
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public static File jsa; // will be updated during test
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public static File orgJsaFile; // kept the original file not touched.
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public static String[] shared_region_name = {"MiscCode", "ReadWrite", "ReadOnly", "MiscData"};
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public static int num_regions = shared_region_name.length;
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public static String[] matchMessages = {
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"Unable to use shared archive",
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"An error has occurred while processing the shared archive file.",
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"Checksum verification failed.",
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"The shared archive file has been truncated."
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};
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public static void getFileOffsetInfo() throws Exception {
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wb = WhiteBox.getWhiteBox();
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offset_magic = wb.getOffsetForName("FileMapHeader::_magic");
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sp_offset_crc = wb.getOffsetForName("space_info::_crc");
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try {
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int nonExistOffset = wb.getOffsetForName("FileMapHeader::_non_exist_offset");
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System.exit(-1); // should fail
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} catch (Exception e) {
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// success
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}
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sp_offset = wb.getOffsetForName("FileMapHeader::_space[0]") - offset_magic;
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sp_used_offset = wb.getOffsetForName("space_info::_used") - sp_offset_crc;
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size_t_size = wb.getOffsetForName("size_t_size");
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space_info_size = wb.getOffsetForName("space_info_size");
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}
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public static int getFileHeaderSize(FileChannel fc) throws Exception {
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if (file_header_size != -1) {
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return file_header_size;
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}
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// this is not real header size, it is struct size
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file_header_size = wb.getOffsetForName("file_header_size");
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int offset_path_misc_info = wb.getOffsetForName("FileMapHeader::_paths_misc_info_size") -
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offset_magic;
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int path_misc_info_size = (int)readInt(fc, offset_path_misc_info, size_t_size);
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file_header_size += path_misc_info_size; //readInt(fc, offset_path_misc_info, size_t_size);
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System.out.println("offset_path_misc_info = " + offset_path_misc_info);
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System.out.println("path_misc_info_size = " + path_misc_info_size);
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System.out.println("file_header_size = " + file_header_size);
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file_header_size = (int)align_up_page(file_header_size);
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System.out.println("file_header_size (aligned to page) = " + file_header_size);
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return file_header_size;
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}
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public static long align_up_page(long l) throws Exception {
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// wb is obtained in getFileOffsetInfo() which is called first in main() else we should call
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// WhiteBox.getWhiteBox() here first.
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int pageSize = wb.getVMPageSize();
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return (l + pageSize -1) & (~ (pageSize - 1));
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}
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private static long getRandomBetween(long start, long end) throws Exception {
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if (start > end) {
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throw new IllegalArgumentException("start must be less than end");
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}
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Random aRandom = Utils.getRandomInstance();
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int d = aRandom.nextInt((int)(end - start));
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if (d < 1) {
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d = 1;
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}
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return start + d;
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}
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public static long readInt(FileChannel fc, long offset, int nbytes) throws Exception {
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ByteBuffer bb = ByteBuffer.allocate(nbytes);
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bb.order(ByteOrder.nativeOrder());
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fc.position(offset);
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fc.read(bb);
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return (nbytes > 4 ? bb.getLong(0) : bb.getInt(0));
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}
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public static void writeData(FileChannel fc, long offset, ByteBuffer bb) throws Exception {
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fc.position(offset);
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fc.write(bb);
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fc.force(true);
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}
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public static FileChannel getFileChannel() throws Exception {
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List<StandardOpenOption> arry = new ArrayList<StandardOpenOption>();
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arry.add(READ);
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arry.add(WRITE);
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return FileChannel.open(jsa.toPath(), new HashSet<StandardOpenOption>(arry));
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}
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public static void modifyJsaContentRandomly() throws Exception {
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FileChannel fc = getFileChannel();
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// corrupt random area in the data areas (MiscCode, ReadWrite, ReadOnly, MiscData)
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long[] used = new long[num_regions]; // record used bytes
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long start0, start, end, off;
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int used_offset, path_info_size;
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int bufSize;
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System.out.printf("%-12s%-12s%-12s%-12s%-12s\n", "Space Name", "Offset", "Used bytes", "Reg Start", "Random Offset");
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start0 = getFileHeaderSize(fc);
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for (int i = 0; i < num_regions; i++) {
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used_offset = sp_offset + space_info_size * i + sp_used_offset;
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// read 'used'
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used[i] = readInt(fc, used_offset, size_t_size);
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start = start0;
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for (int j = 0; j < i; j++) {
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start += align_up_page(used[j]);
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}
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end = start + used[i];
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off = getRandomBetween(start, end);
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System.out.printf("%-12s%-12d%-12d%-12d%-12d\n", shared_region_name[i], used_offset, used[i], start, off);
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if (end - off < 1024) {
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bufSize = (int)(end - off + 1);
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} else {
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bufSize = 1024;
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}
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ByteBuffer bbuf = ByteBuffer.wrap(new byte[bufSize]);
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writeData(fc, off, bbuf);
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}
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if (fc.isOpen()) {
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fc.close();
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}
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}
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public static void modifyJsaContent() throws Exception {
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FileChannel fc = getFileChannel();
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byte[] buf = new byte[4096];
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ByteBuffer bbuf = ByteBuffer.wrap(buf);
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long total = 0L;
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long used_offset = 0L;
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long[] used = new long[num_regions];
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System.out.printf("%-12s%-12s\n", "Space name", "Used bytes");
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for (int i = 0; i < num_regions; i++) {
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used_offset = sp_offset + space_info_size* i + sp_used_offset;
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// read 'used'
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used[i] = readInt(fc, used_offset, size_t_size);
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System.out.printf("%-12s%-12d\n", shared_region_name[i], used[i]);
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total += used[i];
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}
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System.out.printf("%-12s%-12d\n", "Total: ", total);
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long corrupt_used_offset = getFileHeaderSize(fc);
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System.out.println("Corrupt RO section, offset = " + corrupt_used_offset);
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while (used_offset < used[0]) {
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writeData(fc, corrupt_used_offset, bbuf);
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bbuf.clear();
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used_offset += 4096;
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}
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fc.force(true);
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if (fc.isOpen()) {
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fc.close();
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}
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}
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public static void modifyJsaHeader() throws Exception {
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FileChannel fc = getFileChannel();
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// screw up header info
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byte[] buf = new byte[getFileHeaderSize(fc)];
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ByteBuffer bbuf = ByteBuffer.wrap(buf);
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writeData(fc, 0L, bbuf);
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if (fc.isOpen()) {
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fc.close();
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}
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}
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public static void copyFile(File from, File to) throws Exception {
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if (to.exists()) {
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if(!to.delete()) {
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throw new IOException("Could not delete file " + to);
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}
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}
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to.createNewFile();
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setReadWritePermission(to);
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Files.copy(from.toPath(), to.toPath(), REPLACE_EXISTING);
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}
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// Copy file with bytes deleted or inserted
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// del -- true, deleted, false, inserted
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public static void copyFile(File from, File to, boolean del) throws Exception {
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try (
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FileChannel inputChannel = new FileInputStream(from).getChannel();
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FileChannel outputChannel = new FileOutputStream(to).getChannel()
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) {
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long size = inputChannel.size();
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int init_size = getFileHeaderSize(inputChannel);
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outputChannel.transferFrom(inputChannel, 0, init_size);
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int n = (int)getRandomBetween(0, 1024);
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if (del) {
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System.out.println("Delete " + n + " bytes at data start section");
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inputChannel.position(init_size + n);
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outputChannel.transferFrom(inputChannel, init_size, size - init_size - n);
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} else {
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System.out.println("Insert " + n + " bytes at data start section");
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outputChannel.position(init_size);
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outputChannel.write(ByteBuffer.wrap(new byte[n]));
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outputChannel.transferFrom(inputChannel, init_size + n , size - init_size);
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}
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}
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}
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public static void restoreJsaFile() throws Exception {
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Files.copy(orgJsaFile.toPath(), jsa.toPath(), REPLACE_EXISTING);
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}
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public static void setReadWritePermission(File file) throws Exception {
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if (!file.canRead()) {
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if (!file.setReadable(true)) {
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throw new IOException("Cannot modify file " + file + " as readable");
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}
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}
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if (!file.canWrite()) {
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if (!file.setWritable(true)) {
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throw new IOException("Cannot modify file " + file + " as writable");
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}
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}
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}
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public static void testAndCheck(String[] execArgs) throws Exception {
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OutputAnalyzer output = TestCommon.execCommon(execArgs);
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String stdtxt = output.getOutput();
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System.out.println("Note: this test may fail in very rare occasions due to CRC32 checksum collision");
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for (String message : matchMessages) {
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if (stdtxt.contains(message)) {
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// match any to return
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return;
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}
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}
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TestCommon.checkExec(output);
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}
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// dump with hello.jsa, then
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// read the jsa file
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// 1) run normal
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// 2) modify header
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// 3) keep header correct but modify content
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// 4) update both header and content, test
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// 5) delete bytes in data begining
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// 6) insert bytes in data begining
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// 7) randomly corrupt data in four areas: RO, RW. MISC DATA, MISC CODE
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public static void main(String... args) throws Exception {
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// must call to get offset info first!!!
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getFileOffsetInfo();
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Path currentRelativePath = Paths.get("");
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String currentDir = currentRelativePath.toAbsolutePath().toString();
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System.out.println("Current relative path is: " + currentDir);
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// get jar file
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String jarFile = JarBuilder.getOrCreateHelloJar();
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// dump (appcds.jsa created)
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TestCommon.testDump(jarFile, null);
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// test, should pass
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System.out.println("1. Normal, should pass but may fail\n");
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String[] execArgs = {"-cp", jarFile, "Hello"};
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OutputAnalyzer output = TestCommon.execCommon(execArgs);
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try {
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TestCommon.checkExecReturn(output, 0, true, "Hello World");
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} catch (Exception e) {
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TestCommon.checkExecReturn(output, 1, true, matchMessages[0]);
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}
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// get current archive name
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jsa = new File(TestCommon.getCurrentArchiveName());
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if (!jsa.exists()) {
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throw new IOException(jsa + " does not exist!");
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}
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setReadWritePermission(jsa);
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// save as original untouched
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orgJsaFile = new File(new File(currentDir), "appcds.jsa.bak");
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copyFile(jsa, orgJsaFile);
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// modify jsa header, test should fail
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System.out.println("\n2. Corrupt header, should fail\n");
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modifyJsaHeader();
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output = TestCommon.execCommon(execArgs);
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output.shouldContain("The shared archive file has the wrong version");
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output.shouldNotContain("Checksum verification failed");
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// modify content
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System.out.println("\n3. Corrupt Content, should fail\n");
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copyFile(orgJsaFile, jsa);
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modifyJsaContent();
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testAndCheck(execArgs);
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// modify both header and content, test should fail
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System.out.println("\n4. Corrupt Header and Content, should fail\n");
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copyFile(orgJsaFile, jsa);
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modifyJsaHeader();
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modifyJsaContent(); // this will not be reached since failed on header change first
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output = TestCommon.execCommon(execArgs);
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output.shouldContain("The shared archive file has the wrong version");
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output.shouldNotContain("Checksum verification failed");
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// delete bytes in data sectoin
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System.out.println("\n5. Delete bytes at begining of data section, should fail\n");
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copyFile(orgJsaFile, jsa, true);
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testAndCheck(execArgs);
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// insert bytes in data sectoin forward
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System.out.println("\n6. Insert bytes at begining of data section, should fail\n");
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copyFile(orgJsaFile, jsa, false);
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testAndCheck(execArgs);
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System.out.println("\n7. modify Content in random areas, should fail\n");
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copyFile(orgJsaFile, jsa);
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modifyJsaContentRandomly();
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testAndCheck(execArgs);
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}
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}
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