org.restcomm.protocols.ss7.sccp.impl.parameter.SccpAddressImpl Maven / Gradle / Ivy
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* JBoss, Home of Professional Open Source
* 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.parameter;
import io.netty.buffer.ByteBuf;
import org.restcomm.protocols.ss7.indicator.AddressIndicator;
import org.restcomm.protocols.ss7.indicator.GlobalTitleIndicator;
import org.restcomm.protocols.ss7.indicator.RoutingIndicator;
import org.restcomm.protocols.ss7.sccp.SccpProtocolVersion;
import org.restcomm.protocols.ss7.sccp.message.ParseException;
import org.restcomm.protocols.ss7.sccp.parameter.GlobalTitle;
import org.restcomm.protocols.ss7.sccp.parameter.ParameterFactory;
import org.restcomm.protocols.ss7.sccp.parameter.SccpAddress;
/**
* @author baranowb
* @author yulianoifa
*
*/
public class SccpAddressImpl extends AbstractParameter implements SccpAddress {
private static final long serialVersionUID = 1L;
private static final byte ROUTE_ON_PC_FLAG = 0x40;
private static final short REMOVE_PC_FLAG = 0xFE;
private static final short REMOVE_PC_FLAG_ANSI = 0xFD;
private static final byte PC_PRESENT_FLAG = 0x01;
private static final byte PC_PRESENT_FLAG_ANSI = 0x02;
private GlobalTitle gt;
private int pc = 0;
private int ssn = -1;
private AddressIndicator ai;
// If this SccpAddress is translated address
private boolean translated;
public SccpAddressImpl() {
}
public SccpAddressImpl(final RoutingIndicator ri, final GlobalTitle gt, final int dpc, final int ssn) {
this.gt = gt;
this.pc = dpc;
this.ssn = ssn;
this.ai = new AddressIndicator(dpc > 0, ssn > 0, ri, gt == null ? GlobalTitleIndicator.NO_GLOBAL_TITLE_INCLUDED
: gt.getGlobalTitleIndicator());
}
public boolean isTranslated() {
return translated;
}
public void setTranslated(boolean translated) {
this.translated = translated;
}
public AddressIndicator getAddressIndicator() {
return this.ai;
}
public int getSignalingPointCode() {
return pc;
}
public int getSubsystemNumber() {
return ssn;
}
public GlobalTitle getGlobalTitle() {
return gt;
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
SccpAddressImpl other = (SccpAddressImpl) obj;
//NOTE: AI is rewritten during routing, this is a hack :/
// if (ai == null) {
// if (other.ai != null)
// return false;
// } else if (!ai.equals(other.ai))
// return false;
if (gt == null) {
if (other.gt != null)
return false;
} else if (!gt.equals(other.gt))
return false;
if (pc != other.pc)
return false;
if (ssn != other.ssn)
return false;
//if (translated != other.translated)
// return false;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((ai == null) ? 0 : ai.hashCode());
result = prime * result + ((gt == null) ? 0 : gt.hashCode());
result = prime * result + pc;
result = prime * result + ssn;
//result = prime * result + (translated ? 1231 : 1237);
return result;
}
public String toString() {
return ((new StringBuffer()).append("pc=").append(pc).append(",ssn=").append(ssn).append(",AI=").append(ai.getValue(SccpProtocolVersion.ITU))
.append(",gt=").append(gt)).toString();
}
@Override
public void decode(ByteBuf buffer, ParameterFactory factory, SccpProtocolVersion sccpProtocolVersion) throws ParseException {
int b = buffer.readByte() & 0xff;
this.ai = new AddressIndicator((byte) b, sccpProtocolVersion);
if (sccpProtocolVersion == SccpProtocolVersion.ANSI) {
if (this.ai.isSSNPresent()) {
this.ssn = buffer.readByte() & 0xff;
}
if (this.ai.isPCPresent()) {
int b1 = buffer.readByte() & 0xff;
int b2 = buffer.readByte() & 0xff;
int b3 = buffer.readByte() & 0xff;
this.pc = (b3 << 16) | (b2 << 8) | b1;
}
} else {
if (this.ai.isPCPresent()) {
int b1 = buffer.readByte() & 0xff;
int b2 = buffer.readByte() & 0xff;
this.pc = ((b2 & 0x3f) << 8) | b1;
}
if (this.ai.isSSNPresent()) {
this.ssn = buffer.readByte() & 0xff;
}
}
if(this.ai.getGlobalTitleIndicator()!=GlobalTitleIndicator.NO_GLOBAL_TITLE_INCLUDED){
this.gt = factory.createGlobalTitle(this.ai.getGlobalTitleIndicator());
((AbstractGlobalTitle) this.gt).decode(buffer, factory, sccpProtocolVersion);
}
}
@Override
public void encode(ByteBuf buffer, final boolean removeSpc, SccpProtocolVersion sccpProtocolVersion) throws ParseException {
byte aiValue = ai.getValue(sccpProtocolVersion);
if (sccpProtocolVersion == SccpProtocolVersion.ANSI) {
if (removeSpc && ((aiValue & ROUTE_ON_PC_FLAG) == 0x00)) {
// Routing on GT so lets remove PC flag
aiValue = (byte) (aiValue & REMOVE_PC_FLAG_ANSI);
}
buffer.writeByte(aiValue);
if (ai.isSSNPresent()) {
buffer.writeByte((byte) this.ssn);
}
if ((aiValue & PC_PRESENT_FLAG_ANSI) == PC_PRESENT_FLAG_ANSI) {
// If Point Code included in SCCP Address
buffer.writeByte((byte) this.pc);
buffer.writeByte((byte) (this.pc >> 8));
buffer.writeByte((byte) (this.pc >> 16));
}
} else {
if (removeSpc && ((aiValue & ROUTE_ON_PC_FLAG) == 0x00)) {
// Routing on GT so lets remove PC flag
aiValue = (byte) (aiValue & REMOVE_PC_FLAG);
}
buffer.writeByte(aiValue);
if ((aiValue & PC_PRESENT_FLAG) == PC_PRESENT_FLAG) {
// If Point Code included in SCCP Address
buffer.writeByte((byte) this.pc);
buffer.writeByte(((this.pc >> 8) & 0x3f));
}
if (ai.isSSNPresent()) {
buffer.writeByte((byte) this.ssn);
}
}
if (ai.getGlobalTitleIndicator() != GlobalTitleIndicator.NO_GLOBAL_TITLE_INCLUDED) {
((AbstractGlobalTitle) this.gt).encode(buffer, removeSpc, sccpProtocolVersion);
}
}
}