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* Copyright 2011, Red Hat, Inc. and individual contributors
* Copyright 2019, Mobius Software LTD and individual contributors
* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.restcomm.protocols.ss7.sccp.impl.message;
import io.netty.buffer.ByteBuf;
import org.apache.logging.log4j.Logger;
import org.restcomm.protocols.ss7.sccp.LongMessageRuleType;
import org.restcomm.protocols.ss7.sccp.SccpProtocolVersion;
import org.restcomm.protocols.ss7.sccp.impl.SccpStackImpl;
import org.restcomm.protocols.ss7.sccp.message.ParseException;
import org.restcomm.protocols.ss7.sccp.message.SccpMessage;
import org.restcomm.protocols.ss7.sccp.parameter.ParameterFactory;
/**
*
* @author kulikov
* @author baranowb
* @author sergey vetyutnev
* @author yulianoifa
*/
public abstract class SccpMessageImpl implements SccpMessage {
public static String MESSAGE_NAME_OTHER = "OTHER";
public static String MESSAGE_NAME_CR = "CR";
public static String MESSAGE_NAME_CC = "CC";
public static String MESSAGE_NAME_CREF = "CREF";
public static String MESSAGE_NAME_RLSD = "RLSD";
public static String MESSAGE_NAME_RLC = "RLC";
public static String MESSAGE_NAME_DT1 = "DT1";
public static String MESSAGE_NAME_DT2 = "DT2";
public static String MESSAGE_NAME_AK = "AK";
public static String MESSAGE_NAME_RSR = "RSR";
public static String MESSAGE_NAME_RSC = "RSC";
public static String MESSAGE_NAME_ERR = "ERR";
public static String MESSAGE_NAME_IT = "IT";
public static String MESSAGE_NAME_UDT = "UDT";
public static String MESSAGE_NAME_UDTS = "UDTS";
public static String MESSAGE_NAME_XUDT = "XUDT";
public static String MESSAGE_NAME_XUDTS = "XUDTS";
public static String MESSAGE_NAME_LUDT = "LUDT";
public static String MESSAGE_NAME_LUDTS = "LUTDS";
protected boolean isMtpOriginated;
protected boolean isIncoming;
protected int type;
protected int localOriginSsn = -1;
protected final int maxDataLen;
// These are MTP3 signaling information set when message is received from MTP3
protected int incomingOpc;
protected int incomingDpc;
protected int sls;
// These are MTP3 signaling information that will be set into a MTP3 message when sending to MTP3
protected int outgoingDpc = -1;
protected int networkId;
protected SccpMessageImpl(int maxDataLen, int type, int sls, int localSsn) {
this.isMtpOriginated = false;
this.type = type;
this.localOriginSsn = localSsn;
this.incomingOpc = -1;
this.incomingDpc = -1;
this.sls = sls;
this.maxDataLen = maxDataLen;
}
protected SccpMessageImpl(int maxDataLen, int type, int incomingOpc, int incomingDpc, int incomingSls, int networkId) {
this.isMtpOriginated = true;
this.isIncoming = true;
this.type = type;
this.incomingOpc = incomingOpc;
this.incomingDpc = incomingDpc;
this.sls = incomingSls;
this.maxDataLen = maxDataLen;
this.networkId = networkId;
}
public int getSls() {
return sls;
}
public void setSls(int sls) {
this.sls = sls;
}
public int getIncomingOpc() {
return incomingOpc;
}
public void setIncomingOpc(int opc) {
this.incomingOpc = opc;
}
public int getIncomingDpc() {
return incomingDpc;
}
public int getOutgoingDpc() {
return outgoingDpc;
}
public void setIncomingDpc(int dpc) {
this.incomingDpc = dpc;
}
public void setOutgoingDpc(int dpc) {
this.outgoingDpc = dpc;
}
public int getType() {
return type;
}
public boolean getIsMtpOriginated() {
return isMtpOriginated;
}
public boolean getIsIncoming() {
return isIncoming;
}
public void setIsIncoming(boolean incoming) {
isIncoming = incoming;
}
public int getOriginLocalSsn() {
return localOriginSsn;
}
public int getNetworkId() {
return networkId;
}
public void setNetworkId(int networkId) {
this.networkId = networkId;
}
public abstract void decode(ByteBuf in, ParameterFactory factory, SccpProtocolVersion sccpProtocolVersion) throws ParseException;
public abstract EncodingResultData encode(SccpStackImpl sccpStackImpl, LongMessageRuleType longMessageRuleType, int maxMtp3UserDataLength, Logger logger,
boolean removeSPC, SccpProtocolVersion sccpProtocolVersion) throws ParseException;
public static String getName(int type) {
switch(type) {
case MESSAGE_TYPE_CR:
return MESSAGE_NAME_CR;
case MESSAGE_TYPE_CC:
return MESSAGE_NAME_CC;
case MESSAGE_TYPE_CREF:
return MESSAGE_NAME_CREF;
case MESSAGE_TYPE_RLSD:
return MESSAGE_NAME_RLSD;
case MESSAGE_TYPE_RLC:
return MESSAGE_NAME_RLC;
case MESSAGE_TYPE_DT1:
return MESSAGE_NAME_DT1;
case MESSAGE_TYPE_DT2:
return MESSAGE_NAME_DT2;
case MESSAGE_TYPE_AK:
return MESSAGE_NAME_AK;
case MESSAGE_TYPE_RSR:
return MESSAGE_NAME_RSR;
case MESSAGE_TYPE_RSC:
return MESSAGE_NAME_RSC;
case MESSAGE_TYPE_ERR:
return MESSAGE_NAME_ERR;
case MESSAGE_TYPE_IT:
return MESSAGE_NAME_IT;
case MESSAGE_TYPE_UDT:
return MESSAGE_NAME_UDT;
case MESSAGE_TYPE_UDTS:
return MESSAGE_NAME_UDTS;
case MESSAGE_TYPE_XUDT:
return MESSAGE_NAME_XUDT;
case MESSAGE_TYPE_XUDTS:
return MESSAGE_NAME_XUDTS;
case MESSAGE_TYPE_LUDT:
return MESSAGE_NAME_LUDT;
case MESSAGE_TYPE_LUDTS:
return MESSAGE_NAME_LUDTS;
}
return MESSAGE_NAME_OTHER;
}
}