| /* |
| * Copyright (c) 2016, 2018, 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. |
| */ |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.io.InputStream; |
| |
| /** |
| * Generic JDWP reply |
| */ |
| public abstract class JdwpReply { |
| |
| protected final static int HEADER_LEN = 11; |
| private byte[] errCode = new byte[2]; |
| private byte[] data; |
| |
| public final void initFromStream(InputStream is) throws IOException { |
| DataInputStream ds = new DataInputStream(is); |
| |
| int length = ds.readInt(); |
| int id = ds.readInt(); |
| byte flags = (byte) ds.read(); |
| |
| ds.read(errCode, 0, 2); |
| |
| int dataLength = length - HEADER_LEN; |
| if (dataLength > 0) { |
| data = new byte[dataLength]; |
| int bytesRead = ds.read(data, 0, dataLength); |
| // For large data JDWP agent sends two packets: 1011 bytes in |
| // the first packet (1000 + HEADER_LEN) and the rest in the |
| // second packet. |
| if (bytesRead > 0 && bytesRead < dataLength) { |
| System.out.println("[" + getClass().getName() + "] Only " + |
| bytesRead + " bytes of " + dataLength + " were " + |
| "read in the first packet. Reading the rest..."); |
| ds.read(data, bytesRead, dataLength - bytesRead); |
| } |
| |
| parseData(new DataInputStream(new ByteArrayInputStream(data))); |
| } |
| } |
| |
| protected void parseData(DataInputStream ds) throws IOException { |
| } |
| |
| protected byte[] readJdwpString(DataInputStream ds) throws IOException { |
| byte[] str = null; |
| int len = ds.readInt(); |
| if (len > 0) { |
| str = new byte[len]; |
| ds.read(str, 0, len); |
| } |
| return str; |
| } |
| |
| protected long readRefId(DataInputStream ds) throws IOException { |
| return ds.readLong(); |
| } |
| |
| public int getErrorCode() { |
| return (((errCode[0] & 0xFF) << 8) | (errCode[1] & 0xFF)); |
| } |
| } |