/protocols/ss7/mtp/mtp-api/src/main/java/org/mobicents/protocols/ss7/mtp/Mtp3TransferPrimitive.java

  1/*
  2 * JBoss, Home of Professional Open Source
  3 * Copyright 2011, Red Hat, Inc. and individual contributors
  4 * by the @authors tag. See the copyright.txt in the distribution for a
  5 * full listing of individual contributors.
  6 *
  7 * This is free software; you can redistribute it and/or modify it
  8 * under the terms of the GNU Lesser General Public License as
  9 * published by the Free Software Foundation; either version 2.1 of
 10 * the License, or (at your option) any later version.
 11 *
 12 * This software is distributed in the hope that it will be useful,
 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 15 * Lesser General Public License for more details.
 16 *
 17 * You should have received a copy of the GNU Lesser General Public
 18 * License along with this software; if not, write to the Free
 19 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 20 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 21 */
 22
 23package org.mobicents.protocols.ss7.mtp;
 24
 25/**
 26 * @author sergey vetyutnev
 27 * 
 28 */
 29public class Mtp3TransferPrimitive {
 30
 31	protected int si; // service indicator
 32	protected int ni; // network indicator
 33	protected int mp; // message priority
 34	protected int opc;
 35	protected int dpc;
 36	protected int sls;
 37	protected byte[] data;
 38
 39	public Mtp3TransferPrimitive() {
 40	}
 41
 42	public Mtp3TransferPrimitive(int si, int ni, int mp, int opc, int dpc, int sls, byte[] data) {
 43		this.si = si;
 44		this.ni = ni;
 45		this.mp = mp;
 46		this.opc = opc;
 47		this.dpc = dpc;
 48		this.sls = sls;
 49		this.data = data;
 50	}
 51	
 52	public int getSi() {
 53		return this.si;
 54	}
 55
 56	public int getNi() {
 57		return this.ni;
 58	}
 59
 60	public int getMp() {
 61		return this.mp;
 62	}
 63
 64	public int getOpc() {
 65		return this.opc;
 66	}
 67
 68	public int getDpc() {
 69		return this.dpc;
 70	}
 71
 72	public int getSls() {
 73		return this.sls;
 74	}
 75
 76	public byte[] getData() {
 77		return this.data;
 78	}
 79
 80	public void setSi(int si) {
 81		this.si = si;
 82	}
 83
 84	public void setNi(int ni) {
 85		this.ni = ni;
 86	}
 87
 88	public void setMp(int mp) {
 89		this.mp = mp;
 90	}
 91
 92	public void setOpc( int opc ) {
 93		this.opc = opc;
 94	}
 95
 96	public void setDpc( int dpc ) {
 97		this.dpc = dpc;
 98	}
 99
100	public void setSls( int sls ) {
101		this.sls = sls;
102	}
103
104	public void setData(byte[] data) {
105		this.data = data;
106	}
107
108
109	public void decodeMtp3(byte[] msg) {
110
111		// sio
112		int sio = msg[0];
113		this.si = sio & 0x0F;
114		int ssi = (sio & 0xF0) >> 4;
115		this.ni = ssi >> 2;
116		this.mp = ssi & 0x03;
117
118		// routing label
119		byte b1 = msg[1];
120		byte b2 = msg[2];
121		byte b3 = msg[3];
122		byte b4 = msg[4];
123		this.dpc = ((b2 & 0x3f) << 8) | (b1 & 0xff);
124		this.opc = ((b4 & 0x0f) << 10) | ((b3 & 0xff) << 2) | ((b2 & 0xc0) >> 6);
125		this.sls = ((b4 & 0xf0) >> 4);
126
127		// msu data
128		this.data = new byte[msg.length - 5];
129		System.arraycopy(msg, 5, this.data, 0, this.data.length);
130	}
131
132	public byte[] encodeMtp3() {
133
134		byte[] res = new byte[this.data.length + 5];
135
136		// sio
137		int ssi = (this.ni & 0x03) << 2 | (this.mp & 0x03);
138		res[0] = (byte) (((ssi & 0x0F) << 4) | (this.si & 0x0F));
139		
140		// routing label
141		res[1] = (byte) dpc;
142		res[2] = (byte) (((dpc >> 8) & 0x3F) | ((this.opc & 0x03) << 6));
143		res[3] = (byte) (this.opc >> 2);
144		res[4] = (byte) (((this.opc >> 10) & 0x0F) | ((sls & 0x0F) << 4));
145
146		// msu data
147		System.arraycopy(this.data, 0, res, 5, this.data.length);
148
149		return res;
150	}
151	
152	@Override
153	public String toString() {
154
155		StringBuilder sb = new StringBuilder();
156		sb.append("MTP-TRANSFER: OPC=");
157		sb.append(this.opc);
158		sb.append(", DPC=");
159		sb.append(this.dpc);
160		sb.append(", SLS=");
161		sb.append(this.sls);
162
163		if (this.data != null) {
164			sb.append(", MsgLen=");
165			sb.append(this.data.length);
166		}
167		
168		sb.append(", NI=");
169		switch (this.ni) {
170		case 0:
171			sb.append("National");
172			break;
173		case 1:
174			sb.append("NationalSpare");
175			break;
176		case 2:
177			sb.append("International");
178			break;
179		case 3:
180			sb.append("InternationalSpare");
181			break;
182		default:
183			sb.append(this.ni);
184			break;
185		}
186
187		sb.append(", SI=");
188		switch (this.si) {
189		case 0:
190			sb.append("SNMM");
191			break;
192		case 1:
193			sb.append("SNTMM");
194			break;
195		case 2:
196			sb.append("SNTMM Special");
197			break;
198		case 3:
199			sb.append("SCCP");
200			break;
201		case 4:
202			sb.append("TUP");
203			break;
204		case 5:
205			sb.append("ISDN");
206			break;
207		case 6:
208			sb.append("DUP-1");
209			break;
210		case 7:
211			sb.append("DUP-1");
212			break;
213		case 8:
214			sb.append("MTP Testing");
215			break;
216		case 9:
217			sb.append("Broadband ISDN");
218			break;
219		case 10:
220			sb.append("Satellite ISDN");
221			break;
222		default:
223			sb.append(this.si);
224			break;
225		}
226
227		sb.append(", MP=");
228		sb.append(this.mp);
229
230		return sb.toString();
231	}
232}
233
234