/*
* 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.tcap.asn;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.mobicents.protocols.asn.AsnException;
import org.mobicents.protocols.asn.AsnInputStream;
import org.mobicents.protocols.asn.AsnOutputStream;
import org.mobicents.protocols.asn.Tag;
import org.mobicents.protocols.ss7.tcap.asn.comp.Component;
import org.mobicents.protocols.ss7.tcap.asn.comp.PAbortCauseType;
import org.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage;
/**
* @author baranowb
* @author sergey vetyutnev
*
*/
public class TCBeginMessageImpl implements TCBeginMessage {
private static final String _OCTET_STRING_ENCODE = "US-ASCII";
// mandatory
private byte[] originatingTransactionId;
// opt
private DialogPortion dp;
// opt
private Component[] component;
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage#getComponent()
*/
public Component[] getComponent() {
return this.component;
}
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage#getDialogPortion ()
*/
public DialogPortion getDialogPortion() {
return this.dp;
}
/*
* (non-Javadoc)
*
* @seeorg.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage# getOriginatingTransactionId()
*/
public byte[] getOriginatingTransactionId() {
return this.originatingTransactionId;
}
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage#setComponent
* (org.mobicents.protocols.ss7.tcap.asn.comp.Component[])
*/
public void setComponent(Component[] c) {
this.component = c;
}
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage#setDialogPortion
* (org.mobicents.protocols.ss7.tcap.asn.DialogPortion)
*/
public void setDialogPortion(DialogPortion dp) {
this.dp = dp;
}
/*
* (non-Javadoc)
*
* @seeorg.mobicents.protocols.ss7.tcap.asn.comp.TCBeginMessage# setOriginatingTransactionId(java.lang.String)
*/
public void setOriginatingTransactionId(byte[] t) {
this.originatingTransactionId = t;
}
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.Encodable#decode(org.mobicents.protocols .asn.AsnInputStream)
*/
public void decode(AsnInputStream ais) throws ParseException {
try {
AsnInputStream localAis = ais.readSequenceStream();
int tag = localAis.readTag();
if (tag != _TAG_OTX || localAis.getTagClass() != Tag.CLASS_APPLICATION)
throw new ParseException(PAbortCauseType.IncorrectTxPortion, null,
"Error decoding TC-Begin: Expected OriginatingTransactionId, found tag: " + tag);
this.originatingTransactionId = localAis.readOctetString();
while (true) {
if (localAis.available() == 0)
return;
tag = localAis.readTag();
if (localAis.isTagPrimitive() || localAis.getTagClass() != Tag.CLASS_APPLICATION)
throw new ParseException(PAbortCauseType.IncorrectTxPortion, null,
"Error decoding TC-Begin: DialogPortion and Component portion must be constructive and has tag class CLASS_APPLICATION");
switch (tag) {
case DialogPortion._TAG:
this.dp = TcapFactory.createDialogPortion(localAis);
break;
case Component._COMPONENT_TAG:
AsnInputStream compAis = localAis.readSequenceStream();
List<Component> cps = new ArrayList<Component>();
// its iterator :)
while (compAis.available() > 0) {
Component c = TcapFactory.createComponent(compAis);
if (c == null) {
break;
}
cps.add(c);
}
this.component = new Component[cps.size()];
this.component = cps.toArray(this.component);
break;
default:
throw new ParseException(PAbortCauseType.IncorrectTxPortion, null,
"Error decoding TC-Begin: DialogPortion and Componebt parsing: bad tag - " + tag);
}
}
} catch (IOException e) {
throw new ParseException(PAbortCauseType.BadlyFormattedTxPortion, null, "IOException while decoding TC-Begin: "
+ e.getMessage(), e);
} catch (AsnException e) {
throw new ParseException(PAbortCauseType.BadlyFormattedTxPortion, null, "AsnException while decoding TC-Begin: "
+ e.getMessage(), e);
}
}
/*
* (non-Javadoc)
*
* @see org.mobicents.protocols.ss7.tcap.asn.Encodable#encode(org.mobicents.protocols .asn.AsnOutputStream)
*/
public void encode(AsnOutputStream aos) throws EncodeException {
// if (this.originatingTransactionId == null)
// throw new ParseException("Error encoding TC-Begin: originatingTransactionId must not be null");
try {
aos.writeTag(Tag.CLASS_APPLICATION, false, _TAG);
int pos = aos.StartContentDefiniteLength();
// Utils.writeTransactionId(aos, this.originatingTransactionId, Tag.CLASS_APPLICATION, _TAG_OTX);
aos.writeOctetString(Tag.CLASS_APPLICATION, _TAG_OTX, this.originatingTransactionId);
if (this.dp != null)
this.dp.encode(aos);
if (component != null) {
aos.writeTag(Tag.CLASS_APPLICATION, false, Component._COMPONENT_TAG);
int pos2 = aos.StartContentDefiniteLength();
for (Component c : this.component) {
c.encode(aos);
}
aos.FinalizeContent(pos2);
}
aos.FinalizeContent(pos);
} catch (IOException e) {
throw new EncodeException("IOException while encoding TC-Begin: " + e.getMessage(), e);
} catch (AsnException e) {
throw new EncodeException("AsnException while encoding TC-Begin: " + e.getMessage(), e);
}
}
}