/*
* TeleStax, Open Source Cloud Communications Copyright 2012.
* 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.mobicents.protocols.ss7.mtp;
/**
* @author sergey vetyutnev
* @author amit bhayani
*
*/
public class Mtp3TransferPrimitive {
protected final int si; // service indicator
protected final int ni; // network indicator
protected final int mp; // message priority
protected final int opc;
protected final int dpc;
protected final int sls;
protected final byte[] data;
private final RoutingLabelFormat pointCodeFormat;
protected Mtp3TransferPrimitive(int si, int ni, int mp, int opc, int dpc, int sls, byte[] data,
RoutingLabelFormat pointCodeFormat) {
this.si = si;
this.ni = ni;
this.mp = mp;
this.opc = opc;
this.dpc = dpc;
this.sls = sls;
this.data = data;
this.pointCodeFormat = pointCodeFormat;
}
public int getSi() {
return this.si;
}
public int getNi() {
return this.ni;
}
public int getMp() {
return this.mp;
}
public int getOpc() {
return this.opc;
}
public int getDpc() {
return this.dpc;
}
public int getSls() {
return this.sls;
}
public byte[] getData() {
return this.data;
}
public byte[] encodeMtp3() {
byte[] res = null;
int ssi = 0;
switch (this.pointCodeFormat) {
case ITU:
res = new byte[this.data.length + 5];
// sio
ssi = (this.ni & 0x03) << 2 | (this.mp & 0x03);
res[0] = (byte) (((ssi & 0x0F) << 4) | (this.si & 0x0F));
// routing label
res[1] = (byte) this.dpc;
res[2] = (byte) (((this.dpc >> 8) & 0x3F) | ((this.opc & 0x03) << 6));
res[3] = (byte) (this.opc >> 2);
res[4] = (byte) (((this.opc >> 10) & 0x0F) | ((this.sls & 0x0F) << 4));
// msu data
System.arraycopy(this.data, 0, res, 5, this.data.length);
break;
case ANSI_Sls8Bit:
res = new byte[this.data.length + 8];
// sio
ssi = (this.ni & 0x03) << 2 | (this.mp & 0x03);
res[0] = (byte) (((ssi & 0x0F) << 4) | (this.si & 0x0F));
res[1] = (byte) this.dpc;
res[2] = (byte) (this.dpc >> 8);
res[3] = (byte) (this.dpc >> 16);
res[4] = (byte) this.opc;
res[5] = (byte) (this.opc >> 8);
res[6] = (byte) (this.opc >> 16);
res[7] = (byte) this.sls;
// msu data
System.arraycopy(this.data, 0, res, 8, this.data.length);
break;
default:
// We don't support rest
break;
}
return res;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("MTP-TRANSFER: OPC=");
sb.append(this.opc);
sb.append(", DPC=");
sb.append(this.dpc);
sb.append(", SLS=");
sb.append(this.sls);
if (this.data != null) {
sb.append(", MsgLen=");
sb.append(this.data.length);
}
sb.append(", NI=");
switch (this.ni) {
case 0:
sb.append("National");
break;
case 1:
sb.append("NationalSpare");
break;
case 2:
sb.append("International");
break;
case 3:
sb.append("InternationalSpare");
break;
default:
sb.append(this.ni);
break;
}
sb.append(", SI=");
switch (this.si) {
case 0:
sb.append("SNMM");
break;
case 1:
sb.append("SNTMM");
break;
case 2:
sb.append("SNTMM Special");
break;
case 3:
sb.append("SCCP");
break;
case 4:
sb.append("TUP");
break;
case 5:
sb.append("ISDN");
break;
case 6:
sb.append("DUP-1");
break;
case 7:
sb.append("DUP-1");
break;
case 8:
sb.append("MTP Testing");
break;
case 9:
sb.append("Broadband ISDN");
break;
case 10:
sb.append("Satellite ISDN");
break;
default:
sb.append(this.si);
break;
}
sb.append(", MP=");
sb.append(this.mp);
return sb.toString();
}
}