/*
|
* CDDL HEADER START
|
*
|
* The contents of this file are subject to the terms of the
|
* Common Development and Distribution License, Version 1.0 only
|
* (the "License"). You may not use this file except in compliance
|
* with the License.
|
*
|
* You can obtain a copy of the license at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
|
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
|
* See the License for the specific language governing permissions
|
* and limitations under the License.
|
*
|
* When distributing Covered Code, include this CDDL HEADER in each
|
* file and include the License file at
|
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
|
* add the following below this CDDL HEADER, with the fields enclosed
|
* by brackets "[]" replaced with your own identifying information:
|
* Portions Copyright [yyyy] [name of copyright owner]
|
*
|
* CDDL HEADER END
|
*
|
*
|
* Copyright 2006-2009 Sun Microsystems, Inc.
|
* Portions Copyright 2011-2013 ForgeRock AS
|
*/
|
package org.opends.server.replication.protocol;
|
|
import java.io.UnsupportedEncodingException;
|
import java.util.ArrayList;
|
import java.util.Collection;
|
import java.util.zip.DataFormatException;
|
|
import org.opends.server.protocols.asn1.ASN1;
|
import org.opends.server.protocols.asn1.ASN1Exception;
|
import org.opends.server.protocols.asn1.ASN1Reader;
|
import org.opends.server.protocols.asn1.ASN1Writer;
|
import org.opends.server.protocols.internal.InternalClientConnection;
|
import org.opends.server.protocols.ldap.LDAPAttribute;
|
import org.opends.server.replication.common.AssuredMode;
|
import org.opends.server.replication.common.ChangeNumber;
|
import org.opends.server.types.Attribute;
|
import org.opends.server.types.ByteSequenceReader;
|
import org.opends.server.types.ByteString;
|
import org.opends.server.types.ByteStringBuilder;
|
import org.opends.server.types.LDAPException;
|
import org.opends.server.types.Operation;
|
import org.opends.server.types.RawAttribute;
|
import org.opends.server.types.operation.PostOperationAddOperation;
|
import org.opends.server.types.operation.PostOperationDeleteOperation;
|
import org.opends.server.types.operation.PostOperationModifyDNOperation;
|
import org.opends.server.types.operation.PostOperationModifyOperation;
|
import org.opends.server.types.operation.PostOperationOperation;
|
|
/**
|
* Abstract class that must be extended to define a message
|
* used for sending Updates between servers.
|
*/
|
public abstract class LDAPUpdateMsg extends UpdateMsg
|
{
|
/**
|
* The DN on which the update was originally done.
|
*/
|
protected String dn = null;
|
|
/**
|
* The entryUUID of the entry that was updated.
|
*/
|
protected String entryUUID;
|
|
/**
|
* Encoded form of the LDAPUpdateMsg.
|
*/
|
protected byte[] bytes = null;
|
|
/**
|
* Encoded form of entry attributes.
|
*/
|
protected byte[] encodedEclIncludes = new byte[0];
|
|
/**
|
* Creates a new UpdateMsg.
|
*/
|
public LDAPUpdateMsg()
|
{
|
}
|
|
/**
|
* Creates a new UpdateMsg with the given information.
|
*
|
* @param ctx The replication Context of the operation for which the
|
* update message must be created,.
|
* @param dn The DN of the entry on which the change
|
* that caused the creation of this object happened
|
*/
|
public LDAPUpdateMsg(OperationContext ctx, String dn)
|
{
|
this.protocolVersion = ProtocolVersion.getCurrentVersion();
|
this.changeNumber = ctx.getChangeNumber();
|
this.entryUUID = ctx.getEntryUUID();
|
this.dn = dn;
|
}
|
|
/**
|
* Creates a new UpdateMessage with the given information.
|
*
|
* @param cn The ChangeNumber of the operation for which the
|
* UpdateMessage is created.
|
* @param entryUUID The Unique identifier of the entry that is updated
|
* by the operation for which the UpdateMessage is created.
|
* @param dn The DN of the entry on which the change
|
* that caused the creation of this object happened
|
*/
|
public LDAPUpdateMsg(ChangeNumber cn, String entryUUID, String dn)
|
{
|
this.protocolVersion = ProtocolVersion.getCurrentVersion();
|
this.changeNumber = cn;
|
this.entryUUID = entryUUID;
|
this.dn = dn;
|
}
|
|
/**
|
* Generates an Update Message with the provided information.
|
*
|
* @param op The operation for which the message must be created.
|
* @return The generated message.
|
*/
|
public static LDAPUpdateMsg generateMsg(PostOperationOperation op)
|
{
|
LDAPUpdateMsg msg = null;
|
switch (op.getOperationType())
|
{
|
case MODIFY :
|
msg = new ModifyMsg((PostOperationModifyOperation) op);
|
break;
|
|
case ADD:
|
msg = new AddMsg((PostOperationAddOperation) op);
|
break;
|
|
case DELETE :
|
msg = new DeleteMsg((PostOperationDeleteOperation) op);
|
break;
|
|
case MODIFY_DN :
|
msg = new ModifyDNMsg( (PostOperationModifyDNOperation) op);
|
break;
|
}
|
|
return msg;
|
}
|
|
/**
|
* Get the DN on which the operation happened.
|
*
|
* @return The DN on which the operations happened.
|
*/
|
public String getDn()
|
{
|
return dn;
|
}
|
|
/**
|
* Set the DN.
|
* @param dn The dn that must now be used for this message.
|
*/
|
public void setDn(String dn)
|
{
|
this.dn = dn;
|
}
|
|
/**
|
* Get the entryUUID of the entry on which the operation happened.
|
*
|
* @return The entryUUID of the entry on which the operation happened.
|
*/
|
public String getEntryUUID()
|
{
|
return entryUUID;
|
}
|
|
/**
|
* Create and Operation from the message.
|
*
|
* @param conn connection to use when creating the message
|
* @return the created Operation
|
* @throws LDAPException In case of LDAP decoding exception.
|
* @throws ASN1Exception In case of ASN1 decoding exception.
|
* @throws DataFormatException In case of bad msg format.
|
*/
|
public Operation createOperation(InternalClientConnection conn)
|
throws LDAPException, ASN1Exception, DataFormatException
|
{
|
return createOperation(conn, dn);
|
}
|
|
|
/**
|
* Create and Operation from the message using the provided DN.
|
*
|
* @param conn connection to use when creating the message.
|
* @param newDn the DN to use when creating the operation.
|
* @return the created Operation.
|
* @throws LDAPException In case of LDAP decoding exception.
|
* @throws ASN1Exception In case of ASN1 decoding exception.
|
* @throws DataFormatException In case of bad msg format.
|
*/
|
public abstract Operation createOperation(InternalClientConnection conn,
|
String newDn) throws LDAPException, ASN1Exception, DataFormatException;
|
|
|
// ============
|
// Msg encoding
|
// ============
|
|
/**
|
* Do all the work necessary for the encoding.
|
*
|
* This is useful in case when one wants to perform this outside
|
* of a synchronized portion of code.
|
*
|
* This method is not synchronized and therefore not MT safe.
|
*
|
* @throws UnsupportedEncodingException when encoding fails.
|
*/
|
public void encode() throws UnsupportedEncodingException
|
{
|
bytes = getBytes();
|
}
|
|
/**
|
* Encode the common header for all the UpdateMsg. This uses the current
|
* protocol version.
|
*
|
* @param type the type of UpdateMsg to encode.
|
* @param additionalLength additional length needed to encode the remaining
|
* part of the UpdateMsg.
|
* @param version The ProtocolVersion to use when encoding.
|
* @return a byte array containing the common header and enough space to
|
* encode the remaining bytes of the UpdateMsg as was specified
|
* by the additionalLength.
|
* (byte array length = common header length + additionalLength)
|
* @throws UnsupportedEncodingException if UTF-8 is not supported.
|
*/
|
@Override
|
public byte[] encodeHeader(byte type, int additionalLength, short version)
|
throws UnsupportedEncodingException
|
{
|
byte[] byteDn = dn.getBytes("UTF-8");
|
byte[] changeNumberByte =
|
this.getChangeNumber().toString().getBytes("UTF-8");
|
byte[] byteEntryuuid = getEntryUUID().getBytes("UTF-8");
|
|
/* The message header is stored in the form :
|
* <operation type><protocol version><changenumber><dn><entryuuid><assured>
|
* <assured mode> <safe data level>
|
* the length of result byte array is therefore :
|
* 1 + 1 + change number length + 1 + dn length + 1 + uuid length + 1 + 1
|
* + 1 + 1 + additional_length
|
*/
|
int length = 8 + changeNumberByte.length + byteDn.length
|
+ byteEntryuuid.length + additionalLength;
|
|
byte[] encodedMsg = new byte[length];
|
|
/* put the type of the operation */
|
encodedMsg[0] = type;
|
|
/* put the protocol version */
|
encodedMsg[1] = (byte) version;
|
int pos = 2;
|
|
/* Put the ChangeNumber */
|
pos = addByteArray(changeNumberByte, encodedMsg, pos);
|
|
/* Put the DN and a terminating 0 */
|
pos = addByteArray(byteDn, encodedMsg, pos);
|
|
/* Put the entry uuid and a terminating 0 */
|
pos = addByteArray(byteEntryuuid, encodedMsg, pos);
|
|
/* Put the assured flag */
|
encodedMsg[pos++] = (assuredFlag ? (byte) 1 : 0);
|
|
/* Put the assured mode */
|
encodedMsg[pos++] = assuredMode.getValue();
|
|
/* Put the safe data level */
|
encodedMsg[pos++] = safeDataLevel;
|
|
return encodedMsg;
|
}
|
|
/**
|
* Encode the common header for all the UpdateMessage. This uses the version
|
* 1 of the replication protocol (used for compatibility purpose).
|
*
|
* @param type the type of UpdateMessage to encode.
|
* @param additionalLength additional length needed to encode the remaining
|
* part of the UpdateMessage.
|
* @return a byte array containing the common header and enough space to
|
* encode the remaining bytes of the UpdateMessage as was specified
|
* by the additionalLength.
|
* (byte array length = common header length + additionalLength)
|
* @throws UnsupportedEncodingException if UTF-8 is not supported.
|
*/
|
public byte[] encodeHeader_V1(byte type, int additionalLength)
|
throws UnsupportedEncodingException
|
{
|
byte[] byteDn = dn.getBytes("UTF-8");
|
byte[] changeNumberByte =
|
this.getChangeNumber().toString().getBytes("UTF-8");
|
byte[] byteEntryuuid = getEntryUUID().getBytes("UTF-8");
|
|
/* The message header is stored in the form :
|
* <operation type><changenumber><dn><assured><entryuuid><change>
|
* the length of result byte array is therefore :
|
* 1 + change number length + 1 + dn length + 1 + 1 +
|
* uuid length + 1 + additional_length
|
*/
|
int length = 5 + changeNumberByte.length + byteDn.length
|
+ byteEntryuuid.length + additionalLength;
|
|
byte[] encodedMsg = new byte[length];
|
|
/* put the type of the operation */
|
encodedMsg[0] = type;
|
int pos = 1;
|
|
/* put the ChangeNumber */
|
pos = addByteArray(changeNumberByte, encodedMsg, pos);
|
|
/* put the assured information */
|
encodedMsg[pos++] = (assuredFlag ? (byte) 1 : 0);
|
|
/* put the DN and a terminating 0 */
|
pos = addByteArray(byteDn, encodedMsg, pos);
|
|
/* put the entry uuid and a terminating 0 */
|
pos = addByteArray(byteEntryuuid, encodedMsg, pos);
|
|
return encodedMsg;
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public byte[] getBytes()
|
throws UnsupportedEncodingException
|
{
|
// Encode in the current protocol version
|
return getBytes(ProtocolVersion.getCurrentVersion());
|
}
|
|
/**
|
* {@inheritDoc}
|
*/
|
@Override
|
public byte[] getBytes(short reqProtocolVersion)
|
throws UnsupportedEncodingException
|
{
|
if (reqProtocolVersion == ProtocolVersion.REPLICATION_PROTOCOL_V1)
|
{
|
return getBytes_V1();
|
}
|
else if (reqProtocolVersion <= ProtocolVersion.REPLICATION_PROTOCOL_V3)
|
{
|
return getBytes_V23();
|
}
|
else
|
{
|
// Encode in the current protocol version
|
if (bytes == null)
|
{
|
// this is the current version of the protocol
|
bytes = getBytes_V45(reqProtocolVersion);
|
}
|
return bytes;
|
}
|
}
|
|
/**
|
* Get the byte array representation of this Message. This uses the version
|
* 1 of the replication protocol (used for compatibility purpose).
|
*
|
* @return The byte array representation of this Message.
|
*
|
* @throws UnsupportedEncodingException When the encoding of the message
|
* failed because the UTF-8 encoding is not supported.
|
*/
|
public abstract byte[] getBytes_V1() throws UnsupportedEncodingException;
|
|
/**
|
* Get the byte array representation of this Message. This uses the version
|
* 2 of the replication protocol (used for compatibility purpose).
|
*
|
* @return The byte array representation of this Message.
|
*
|
* @throws UnsupportedEncodingException When the encoding of the message
|
* failed because the UTF-8 encoding is not supported.
|
*/
|
public abstract byte[] getBytes_V23() throws UnsupportedEncodingException;
|
|
|
/**
|
* Get the byte array representation of this Message. This uses the provided
|
* version number which must be version 4 or newer.
|
* @param reqProtocolVersion TODO
|
*
|
* @return The byte array representation of this Message.
|
*
|
* @throws UnsupportedEncodingException When the encoding of the message
|
* failed because the UTF-8 encoding is not supported.
|
*/
|
public abstract byte[] getBytes_V45(short reqProtocolVersion)
|
throws UnsupportedEncodingException;
|
|
|
/**
|
* Encode a list of attributes.
|
*/
|
static private byte[] encodeAttributes(Collection<Attribute> attributes)
|
{
|
if (attributes==null)
|
return new byte[0];
|
try
|
{
|
ByteStringBuilder byteBuilder = new ByteStringBuilder();
|
ASN1Writer writer = ASN1.getWriter(byteBuilder);
|
for (Attribute a : attributes)
|
{
|
new LDAPAttribute(a).write(writer);
|
}
|
return byteBuilder.toByteArray();
|
}
|
catch (Exception e)
|
{
|
return null;
|
}
|
}
|
|
// ============
|
// Msg decoding
|
// ============
|
|
/**
|
* Decode the Header part of this Update Message, and check its type.
|
*
|
* @param types The allowed types of this Update Message.
|
* @param encodedMsg the encoded form of the UpdateMsg.
|
* @return the position at which the remaining part of the message starts.
|
* @throws DataFormatException if the encodedMsg does not contain a valid
|
* common header.
|
*/
|
public int decodeHeader(byte[] types, byte[] encodedMsg)
|
throws DataFormatException
|
{
|
/* first byte is the type */
|
boolean foundMatchingType = false;
|
for (byte type : types)
|
{
|
if (type == encodedMsg[0])
|
{
|
foundMatchingType = true;
|
break;
|
}
|
}
|
if (!foundMatchingType)
|
throw new DataFormatException("byte[] is not a valid update msg: "
|
+ encodedMsg[0]);
|
|
/*
|
* For older protocol version PDUs, decode the matching version header
|
* instead.
|
*/
|
if ((encodedMsg[0] == MSG_TYPE_ADD_V1) ||
|
(encodedMsg[0] == MSG_TYPE_DELETE_V1) ||
|
(encodedMsg[0] == MSG_TYPE_MODIFYDN_V1) ||
|
(encodedMsg[0] == MSG_TYPE_MODIFY_V1))
|
{
|
return decodeHeader_V1(encodedMsg);
|
}
|
|
/* read the protocol version */
|
protocolVersion = encodedMsg[1];
|
|
try
|
{
|
/* Read the changeNumber */
|
int pos = 2;
|
int length = getNextLength(encodedMsg, pos);
|
String changeNumberStr = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
changeNumber = new ChangeNumber(changeNumberStr);
|
|
/* Read the dn */
|
length = getNextLength(encodedMsg, pos);
|
dn = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
|
/* Read the entryuuid */
|
length = getNextLength(encodedMsg, pos);
|
entryUUID = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
|
/* Read the assured information */
|
assuredFlag = encodedMsg[pos++] == 1;
|
|
/* Read the assured mode */
|
assuredMode = AssuredMode.valueOf(encodedMsg[pos++]);
|
|
/* Read the safe data level */
|
safeDataLevel = encodedMsg[pos++];
|
|
return pos;
|
} catch (UnsupportedEncodingException e)
|
{
|
throw new DataFormatException("UTF-8 is not supported by this jvm.");
|
} catch (IllegalArgumentException e)
|
{
|
throw new DataFormatException(e.getMessage());
|
}
|
}
|
|
/**
|
* Decode the Header part of this Update Message, and check its type. This
|
* uses the version 1 of the replication protocol (used for compatibility
|
* purpose).
|
*
|
* @param encodedMsg the encoded form of the UpdateMessage.
|
* @return the position at which the remaining part of the message starts.
|
* @throws DataFormatException if the encodedMsg does not contain a valid
|
* common header.
|
*/
|
public int decodeHeader_V1(byte[] encodedMsg)
|
throws DataFormatException
|
{
|
if ((encodedMsg[0] != MSG_TYPE_ADD_V1) &&
|
(encodedMsg[0] != MSG_TYPE_DELETE_V1) &&
|
(encodedMsg[0] != MSG_TYPE_MODIFYDN_V1) &&
|
(encodedMsg[0] != MSG_TYPE_MODIFY_V1))
|
throw new DataFormatException("byte[] is not a valid update msg: expected"
|
+ " a V1 PDU, received: " + encodedMsg[0]);
|
|
// Force version to V1 (other new parameters take their default values
|
// (assured stuff...))
|
protocolVersion = ProtocolVersion.REPLICATION_PROTOCOL_V1;
|
|
try
|
{
|
/* read the changeNumber */
|
int pos = 1;
|
int length = getNextLength(encodedMsg, pos);
|
String changeNumberStr = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
changeNumber = new ChangeNumber(changeNumberStr);
|
|
/* read the assured information */
|
assuredFlag = encodedMsg[pos++] == 1;
|
|
/* read the dn */
|
length = getNextLength(encodedMsg, pos);
|
dn = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
|
/* read the entryuuid */
|
length = getNextLength(encodedMsg, pos);
|
entryUUID = new String(encodedMsg, pos, length, "UTF-8");
|
pos += length + 1;
|
|
return pos;
|
} catch (UnsupportedEncodingException e)
|
{
|
throw new DataFormatException("UTF-8 is not supported by this jvm.");
|
}
|
}
|
|
/**
|
* Return the number of bytes used by this message.
|
*
|
* @return The number of bytes used by this message.
|
*/
|
@Override
|
public abstract int size();
|
|
/**
|
* Return the number of bytes used by the header.
|
* @return The number of bytes used by the header.
|
*/
|
protected int headerSize()
|
{
|
return 100; // 100 let's assume header size is 100
|
}
|
|
/**
|
* Set a provided list of entry attributes.
|
* @param entryAttrs The provided list of entry attributes.
|
*/
|
public void setEclIncludes(Collection<Attribute> entryAttrs)
|
{
|
this.encodedEclIncludes = encodeAttributes(entryAttrs);
|
}
|
|
/**
|
* Returns the list of entry attributes.
|
* @return The list of entry attributes.
|
*/
|
public ArrayList<RawAttribute> getEclIncludes()
|
{
|
try
|
{
|
return decodeRawAttributes(this.encodedEclIncludes);
|
}
|
catch(Exception e)
|
{
|
return null;
|
}
|
}
|
|
/**
|
* Decode a provided byte array as a list of RawAttribute.
|
* @param in The provided byte array.
|
* @return The list of RawAttribute objects.
|
* @throws LDAPException when it occurs.
|
* @throws ASN1Exception when it occurs.
|
*/
|
public ArrayList<RawAttribute> decodeRawAttributes(byte[] in)
|
throws LDAPException, ASN1Exception
|
{
|
ArrayList<RawAttribute> rattr = new ArrayList<RawAttribute>();
|
try
|
{
|
ByteSequenceReader reader =
|
ByteString.wrap(in).asReader();
|
ASN1Reader asn1Reader = ASN1.getReader(reader);
|
// loop on attributes
|
while(asn1Reader.hasNextElement())
|
{
|
rattr.add(LDAPAttribute.decode(asn1Reader));
|
}
|
return rattr;
|
}
|
catch(Exception e)
|
{
|
return null;
|
}
|
}
|
|
/**
|
* Decode a provided byte array as a list of Attribute.
|
* @param in The provided byte array.
|
* @return The list of Attribute objects.
|
* @throws LDAPException when it occurs.
|
* @throws ASN1Exception when it occurs.
|
*/
|
public ArrayList<Attribute> decodeAttributes(byte[] in)
|
throws LDAPException, ASN1Exception
|
{
|
ArrayList<Attribute> lattr = new ArrayList<Attribute>();
|
try
|
{
|
ByteSequenceReader reader =
|
ByteString.wrap(in).asReader();
|
ASN1Reader asn1Reader = ASN1.getReader(reader);
|
// loop on attributes
|
while(asn1Reader.hasNextElement())
|
{
|
lattr.add(LDAPAttribute.decode(asn1Reader).toAttribute());
|
}
|
return lattr;
|
}
|
catch(Exception e)
|
{
|
return null;
|
}
|
}
|
}
|
