JdwpPacket.java: New file.
* gnu/classpath/jdwp/transport/JdwpPacket.java: New file.
* gnu/classpath/jdwp/transport/JdwpCommandPacket.java: New file.
* gnu/classpath/jdwp/transport/JdwpReplyPacket.java: New file.
From-SVN: r100463
This commit is contained in:
Keith Seitz
Keith Seitz
parent
cd3352b625
commit
3332357987
|
|
@ -1,3 +1,9 @@
|
|||
2005-06-01 Keith Seitz <keiths@redhat.com>
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* gnu/classpath/jdwp/transport/JdwpPacket.java: New file.
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* gnu/classpath/jdwp/transport/JdwpCommandPacket.java: New file.
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* gnu/classpath/jdwp/transport/JdwpReplyPacket.java: New file.
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2005-06-01 Tom Tromey <tromey@redhat.com>
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PR libgcj/21785:
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|
|
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@ -0,0 +1,149 @@
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/* JdwpCommandPacket.java -- JDWP command packet
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Copyright (C) 2005 Free Software Foundation
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
|
||||
|
||||
package gnu.classpath.jdwp.transport;
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|
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/**
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* A class representing a JDWP command packet.
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* This class adds command set and command to the packet header
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* information in {@link gnu.classpath.jdwp.transport.JdwpPacket}
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* and adds additional command packet-specific processing.
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*
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* @author Keith Seitz <keiths@redhat.com>
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*/
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public class JdwpCommandPacket extends JdwpPacket
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{
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/**
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* Command set
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*/
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protected byte _commandSet;
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|
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/**
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* Command
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*/
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protected byte _command;
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|
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// Minimum packet size [excluding super class]
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// ( commandSet (1) + command (1) )
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private static final int MINIMUM_LENGTH = 2;
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/**
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* Constructs a new <code>JdwpCommandPacket</code>
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*/
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public JdwpCommandPacket ()
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{
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// Don't assign an id. This constructor is called by
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// JdwpPacket.fromBytes, and that will assign a packet id.
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}
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|
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/**
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* Constructs a new <code>JdwpCommandPacket</code>
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* with the given command set and command
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*
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* @param set the command set
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* @param command the command
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*/
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public JdwpCommandPacket (byte set, byte command)
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{
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_id = ++_last_id;
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_commandSet = set;
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_command = command;
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}
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/**
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* Retuns the length of this packet
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*/
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public int getLength ()
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{
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return MINIMUM_LENGTH + super.getLength ();
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}
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|
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/**
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* Returns the command set
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*/
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public byte getCommandSet ()
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{
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return _commandSet;
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}
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|
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/**
|
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* Sets the command set
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*/
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public void setCommandSet (byte cs)
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{
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_commandSet = cs;
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}
|
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|
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/**
|
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* Returns the command
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*/
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||||
public byte getCommand ()
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{
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return _command;
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||||
}
|
||||
|
||||
/**
|
||||
* Sets the command
|
||||
*/
|
||||
public void setCommand (byte cmd)
|
||||
{
|
||||
_command = cmd;
|
||||
}
|
||||
|
||||
// Reads command packet data from the given buffer, starting
|
||||
// at the given offset
|
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protected int myFromBytes (byte[] bytes, int index)
|
||||
{
|
||||
int i = 0;
|
||||
setCommandSet (bytes[index + i++]);
|
||||
setCommand (bytes[index + i++]);
|
||||
return i;
|
||||
}
|
||||
|
||||
// Writes the command packet data into the given buffer
|
||||
protected int myToBytes (byte[] bytes, int index)
|
||||
{
|
||||
// Need to add command set & command
|
||||
int i = 0;
|
||||
bytes[index + i++] = getCommandSet ();
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bytes[index + i++] = getCommand ();
|
||||
|
||||
return i;
|
||||
}
|
||||
}
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|
|
@ -0,0 +1,286 @@
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|||
/* JdwpPacket.java -- Base class for JDWP command and reply packets
|
||||
Copyright (C) 2005 Free Software Foundation
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
|
||||
|
||||
package gnu.classpath.jdwp.transport;
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||||
|
||||
/**
|
||||
* All command and reply packets in JDWP share
|
||||
* common header type information:
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||||
*
|
||||
* length (4 bytes) : size of entire packet, including length
|
||||
* id (4 bytes) : unique packet id
|
||||
* flags (1 byte) : flag byte
|
||||
* [command packet stuff | reply packet stuff]
|
||||
* data (variable) : unique command-/reply-specific data
|
||||
*
|
||||
* This class deal with everything except the command- and reply-specific
|
||||
* data, which get handled in {@link
|
||||
* gnu.classpath.jdwp.transport.JdwpCommandPacket} and {@link
|
||||
* gnu.classpath.jdwp.transprot.JdwpReplyPacket}.
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||||
*
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||||
* @author Keith Seitz <keiths@redhat.com>
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||||
*/
|
||||
public abstract class JdwpPacket
|
||||
{
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||||
// Last id of packet constructed
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||||
protected static int _last_id = 0;
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|
||||
// JDWP reply packet flag
|
||||
protected static final int JDWP_FLAG_REPLY = 0x80;
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||||
|
||||
/**
|
||||
* Minimum packet size excluding sub-class data
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||||
* ( length (4) + id (4) + flags (1) )
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||||
*/
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||||
protected static final int MINIMUM_SIZE = 9;
|
||||
|
||||
/**
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* Id of command/reply
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*/
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||||
protected int _id;
|
||||
|
||||
/**
|
||||
* Packet flags
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||||
*/
|
||||
protected byte _flags;
|
||||
|
||||
/**
|
||||
* Packet-specific data
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||||
*/
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||||
protected byte[] _data;
|
||||
|
||||
/**
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* Constructor
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||||
*/
|
||||
public JdwpPacket ()
|
||||
{
|
||||
// By default, DON'T assign an id. This way when a packet
|
||||
// is constructed from fromBytes, _last_id won't increment (i.e.,
|
||||
// it won't leave holes in the outgoing packet ids).
|
||||
}
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||||
|
||||
/**
|
||||
* Constructs a <code>JdwpPacket</code> with the id
|
||||
* from the given packet.
|
||||
*
|
||||
* @param pkt a packet whose id will be used in this new packet
|
||||
*/
|
||||
public JdwpPacket (JdwpPacket pkt)
|
||||
{
|
||||
_id = pkt.getId ();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the packet id
|
||||
*/
|
||||
public int getId ()
|
||||
{
|
||||
return _id;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the packet id
|
||||
*/
|
||||
public void setId (int id)
|
||||
{
|
||||
_id = id;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the packet flags
|
||||
*/
|
||||
public byte getFlags ()
|
||||
{
|
||||
return _flags;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the packet flags
|
||||
*/
|
||||
public void setFlags (byte flags)
|
||||
{
|
||||
_flags = flags;
|
||||
}
|
||||
|
||||
/**
|
||||
* Gets the command/reply-specific data in this packet
|
||||
*/
|
||||
public byte[] getData ()
|
||||
{
|
||||
return _data;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the command/reply-specific data in this packet
|
||||
*/
|
||||
public void setData (byte[] data)
|
||||
{
|
||||
_data = data;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the length of this entire packet
|
||||
*/
|
||||
public int getLength ()
|
||||
{
|
||||
return MINIMUM_SIZE + (_data == null ? 0 : _data.length);
|
||||
}
|
||||
|
||||
/**
|
||||
* Allow subclasses to initialize from data
|
||||
*
|
||||
* @param bytes packet data from the wire
|
||||
* @param index index into <code>bytes</code> to start processing
|
||||
* @return number of bytes in <code>bytes</code> processed
|
||||
*/
|
||||
protected abstract int myFromBytes (byte[] bytes, int index);
|
||||
|
||||
/**
|
||||
* Convert the given bytes into a <code>JdwpPacket</code>. Uses the
|
||||
* abstract method <code>myFromBytes</code> to allow subclasses to
|
||||
* process data.
|
||||
*
|
||||
* If the given data does not represent a valid JDWP packet, it returns
|
||||
* <code>null</code>.
|
||||
*
|
||||
* @param bytes packet data from the wire
|
||||
* @param index index into <code>bytes</code> to start processing
|
||||
* @return number of bytes in <code>bytes</code> processed
|
||||
*/
|
||||
public static JdwpPacket fromBytes (byte[] bytes)
|
||||
{
|
||||
int i = 0;
|
||||
int length = ((bytes[i++] & 0xff) << 24 | (bytes[i++] & 0xff) << 16
|
||||
| (bytes[i++] & 0xff) << 8 | (bytes[i++] 0xff));
|
||||
int id = 0;
|
||||
byte flags = 0;
|
||||
|
||||
if (bytes.length == length)
|
||||
{
|
||||
id = ((bytes[i++] & 0xff) << 24 | (bytes[i++] & 0xff) << 16
|
||||
| (bytes[i++] & 0xff) << 8 | (bytes[i++] & 0xff));
|
||||
flags = bytes[i++];
|
||||
|
||||
Class clazz = null;
|
||||
if (flags == 0)
|
||||
clazz = JdwpCommandPacket.class;
|
||||
else if ((flags & JDWP_FLAG_REPLY) != 0)
|
||||
clazz = JdwpReplyPacket.class;
|
||||
else
|
||||
{
|
||||
// Malformed packet. Discard it.
|
||||
return null;
|
||||
}
|
||||
|
||||
JdwpPacket pkt = null;
|
||||
try
|
||||
{
|
||||
pkt = (JdwpPacket) clazz.newInstance ();
|
||||
}
|
||||
catch (InstantiationException ie)
|
||||
{
|
||||
// Discard packet
|
||||
return null;
|
||||
}
|
||||
catch (IllegalAccessException iae)
|
||||
{
|
||||
// Discard packet
|
||||
return null;
|
||||
}
|
||||
|
||||
pkt.setId (id);
|
||||
pkt.setFlags (flags);
|
||||
|
||||
i += pkt.myFromBytes (bytes, i);
|
||||
byte[] data = new byte[length - i];
|
||||
System.arraycopy (bytes, i, data, 0, data.length);
|
||||
pkt.setData (data);
|
||||
|
||||
return pkt;
|
||||
}
|
||||
|
||||
return null;
|
||||
}
|
||||
|
||||
// Put subclass information into bytes
|
||||
protected abstract int myToBytes (byte[] bytes, int index);
|
||||
|
||||
// Convert this packet to it byte representation (ready to send on the wire)
|
||||
// NOTE: All integers should be big-endian.
|
||||
public byte[] toBytes ()
|
||||
{
|
||||
// Allocate a new array to hold contents of packet
|
||||
int length = getLength ();
|
||||
byte[] bytes = new byte[length];
|
||||
|
||||
int i = 0;
|
||||
|
||||
//
|
||||
// Packet layout: length, id, flags, packet-specific, data (optional)
|
||||
//
|
||||
|
||||
// length
|
||||
bytes[i++] = (byte) (length >>> 24);
|
||||
bytes[i++] = (byte) (length >>> 16);
|
||||
bytes[i++] = (byte) (length >>> 8);
|
||||
bytes[i++] = (byte) length;
|
||||
|
||||
// id
|
||||
bytes[i++] = (byte) (getId () >>> 24);
|
||||
bytes[i++] = (byte) (getId () >>> 16);
|
||||
bytes[i++] = (byte) (getId () >>> 8);
|
||||
bytes[i++] = (byte) getId ();
|
||||
|
||||
// flag
|
||||
bytes[i++] = getFlags ();
|
||||
|
||||
// packet-specific stuff
|
||||
i += myToBytes (bytes, i);
|
||||
|
||||
// data (if any)
|
||||
byte[] data = getData ();
|
||||
if (data.length > 0 && i < length)
|
||||
{
|
||||
// Would it pay to be over cautious?
|
||||
System.arraycopy (data, 0, bytes, i, data.length);
|
||||
}
|
||||
|
||||
return bytes;
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,127 @@
|
|||
/* JdwpReplyPacket.java -- JDWP reply packet
|
||||
Copyright (C) 2005 Free Software Foundation
|
||||
|
||||
This file is part of GNU Classpath.
|
||||
|
||||
GNU Classpath is free software; you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation; either version 2, or (at your option)
|
||||
any later version.
|
||||
|
||||
GNU Classpath 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 for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with GNU Classpath; see the file COPYING. If not, write to the
|
||||
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
|
||||
02111-1307 USA.
|
||||
|
||||
Linking this library statically or dynamically with other modules is
|
||||
making a combined work based on this library. Thus, the terms and
|
||||
conditions of the GNU General Public License cover the whole
|
||||
combination.
|
||||
|
||||
As a special exception, the copyright holders of this library give you
|
||||
permission to link this library with independent modules to produce an
|
||||
executable, regardless of the license terms of these independent
|
||||
modules, and to copy and distribute the resulting executable under
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
terms of your choice, provided that you also meet, for each linked
|
||||
independent module, the terms and conditions of the license of that
|
||||
module. An independent module is a module which is not derived from
|
||||
or based on this library. If you modify this library, you may extend
|
||||
this exception to your version of the library, but you are not
|
||||
obligated to do so. If you do not wish to do so, delete this
|
||||
exception statement from your version. */
|
||||
|
||||
|
||||
package gnu.classpath.jdwp.transport;
|
||||
|
||||
/**
|
||||
* A class represents a JDWP reply packet.
|
||||
* This class adds an error code to the packet header information
|
||||
* in {@link gnu.classpath.transport.JdwpPacket} and adds additional
|
||||
* reply packet-specific processing.
|
||||
*
|
||||
* @author Keith Seitz <keiths@redhat.com>
|
||||
*/
|
||||
public class JdwpReplyPacket extends JdwpPacket
|
||||
{
|
||||
/**
|
||||
* Error code
|
||||
*/
|
||||
protected short _errorCode;
|
||||
|
||||
// Minimum packet size [excluding super class] ( errorCode (2) )
|
||||
private static final int MINIMUM_LENGTH = 2;
|
||||
|
||||
/**
|
||||
* Constructs a <code>JdwpReplyPacket</code>.
|
||||
*/
|
||||
public JdwpReplyPacket ()
|
||||
{
|
||||
// Don't assign a packet id. This is called by JdwpPacket.fromBytes
|
||||
// which assigns a packet id. (Not that a VM would do that...)
|
||||
}
|
||||
|
||||
/**
|
||||
* Constructs a <code>JdwpReplyPacket</code> with the
|
||||
* id from the given packet and error code
|
||||
*
|
||||
* @param pkt the packet whose id this packet will use
|
||||
* @param errorCode the error code
|
||||
*/
|
||||
public JdwpReplyPacket (JdwpPacket pkt, short errorCode)
|
||||
{
|
||||
super (pkt);
|
||||
_flags = (byte) JDWP_FLAG_REPLY;
|
||||
_errorCode = errorCode;
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the length of this packet
|
||||
*/
|
||||
public int getLength ()
|
||||
{
|
||||
return MINIMUM_LENGTH + super.getLength ();
|
||||
}
|
||||
|
||||
/**
|
||||
* Returns the error code
|
||||
*/
|
||||
public short getErrorCode ()
|
||||
{
|
||||
return _errorCode;
|
||||
}
|
||||
|
||||
/**
|
||||
* Sets the error code
|
||||
*/
|
||||
public void setErrorCode (short ec)
|
||||
{
|
||||
_errorCode = ec;
|
||||
}
|
||||
|
||||
// Reads command packet data from the given buffer, starting
|
||||
// at the given offset
|
||||
protected int myFromBytes (byte[] bytes, int index)
|
||||
{
|
||||
int i = 0;
|
||||
setErrorCode ((short) ((bytes[index + i++] & 0xff) << 8
|
||||
| (bytes[index + i++] & 0xff)));
|
||||
return i;
|
||||
}
|
||||
|
||||
// Writes the command packet data into the given buffer
|
||||
protected int myToBytes (byte[] bytes, int index)
|
||||
{
|
||||
// Need to add error code
|
||||
int i = 0;
|
||||
bytes[index + i++] = (byte) (getErrorCode () >>> 8);
|
||||
bytes[index + i++] = (byte) getErrorCode ();
|
||||
|
||||
return i;
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue