org.restcomm.protocols.ss7.map.smstpdu.DataCodingSchemeImpl Maven / Gradle / Ivy

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/*
 * Mobius Software LTD
 * Copyright 2019, Mobius Software LTD and individual contributors
 * by the @authors tag.
 *
 * This program is free software: you can redistribute it and/or modify
 * under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation; either version 3 of
 * the License, or (at your option) any later version.
 *
 * This program 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 Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see 
 */

package org.restcomm.protocols.ss7.map.smstpdu;

import org.restcomm.protocols.ss7.map.api.smstpdu.CharacterSet;
import org.restcomm.protocols.ss7.map.api.smstpdu.DataCodingGroup;
import org.restcomm.protocols.ss7.map.api.smstpdu.DataCodingSchemaIndicationType;
import org.restcomm.protocols.ss7.map.api.smstpdu.DataCodingSchemaMessageClass;
import org.restcomm.protocols.ss7.map.api.smstpdu.DataCodingScheme;

/**
 *
 * @author sergey vetyutnev
 * @author yulianoifa
 *
 */
public class DataCodingSchemeImpl implements DataCodingScheme {
	private int code;

    public DataCodingSchemeImpl(int code) {
        this.code = code;
    }

    public DataCodingSchemeImpl(DataCodingGroup dataCodingGroup, DataCodingSchemaMessageClass messageClass,
            DataCodingSchemaIndicationType dataCodingSchemaIndicationType, Boolean setIndicationActive,
            CharacterSet characterSet, boolean isCompressed) {

        if (dataCodingGroup == null)
            return;

        switch (dataCodingGroup) {
            case GeneralGroup:
            case MessageMarkedForAutomaticDeletionGroup:
                this.code = (dataCodingGroup == DataCodingGroup.MessageMarkedForAutomaticDeletionGroup ? 0x40 : 0)
                        | (isCompressed ? 0x20 : 0) | (messageClass != null ? (0x10 | messageClass.getCode()) : 0)
                        | (characterSet != null ? (characterSet.getCode() << 2) : 0);
                break;
            case MessageWaitingIndicationGroupDiscardMessage:
            case MessageWaitingIndicationGroupStoreMessage:
                int i1;
                if (dataCodingGroup == DataCodingGroup.MessageWaitingIndicationGroupDiscardMessage) {
                    i1 = 0xC0;
                } else {
                    if (characterSet != null && characterSet == CharacterSet.UCS2)
                        i1 = 0xE0;
                    else
                        i1 = 0xD0;
                }
                this.code = i1 | (setIndicationActive ? 0x08 : 0)
                        | (dataCodingSchemaIndicationType != null ? (dataCodingSchemaIndicationType.getCode()) : 0);
                break;
            case DataCodingMessageClass:
                this.code = 0xF0 | (characterSet == CharacterSet.GSM8 ? 0x04 : 0)
                        | (messageClass != null ? (messageClass.getCode()) : 0);
                break;
			default:
				break;
        }
    }

    public int getCode() {
        return this.code;
    }

    public DataCodingGroup getDataCodingGroup() {
        switch ((this.code & 0xC0) >> 6) {
            case 0:
                return DataCodingGroup.GeneralGroup;
            case 1:
                return DataCodingGroup.MessageMarkedForAutomaticDeletionGroup;
            case 2:
                return DataCodingGroup.Reserved;
            default: {
                switch ((this.code & 0x30) >> 4) {
                    case 0:
                        return DataCodingGroup.MessageWaitingIndicationGroupDiscardMessage;
                    case 1:
                    case 2:
                        return DataCodingGroup.MessageWaitingIndicationGroupStoreMessage;
                    default:
                        return DataCodingGroup.DataCodingMessageClass;
                }
            }
        }
    }

    public DataCodingSchemaMessageClass getMessageClass() {
        DataCodingGroup dcg = this.getDataCodingGroup();
        switch (dcg) {
            case GeneralGroup:
            case MessageMarkedForAutomaticDeletionGroup:
                if ((this.code & 0x10) != 0)
                    return DataCodingSchemaMessageClass.getInstance(this.code & 0x03);
                else
                    return null;
            case DataCodingMessageClass:
                return DataCodingSchemaMessageClass.getInstance(this.code & 0x03);
            default:
                return null;
        }
    }

    public DataCodingSchemaIndicationType getDataCodingSchemaIndicationType() {
        DataCodingGroup dcg = this.getDataCodingGroup();
        switch (dcg) {
            case MessageWaitingIndicationGroupDiscardMessage:
            case MessageWaitingIndicationGroupStoreMessage:
                return DataCodingSchemaIndicationType.getInstance(this.code & 0x03);
            default:
                return null;
        }
    }

    public Boolean getSetIndicationActive() {
        DataCodingGroup dcg = this.getDataCodingGroup();
        switch (dcg) {
            case MessageWaitingIndicationGroupDiscardMessage:
            case MessageWaitingIndicationGroupStoreMessage:
                if ((this.code & 0x08) != 0)
                    return true;
                else
                    return false;
            default:
                return null;
        }
    }

    public CharacterSet getCharacterSet() {

        int cg1 = (this.code & 0xC0) >> 6;
        switch (cg1) {
            case 0:
            case 1:
                int cs = (this.code & 0x0C) >> 2;
                return CharacterSet.getInstance(cs);
            case 3:
                int cg2 = (this.code & 0x30) >> 4;
                switch (cg2) {
                    case 0:
                    case 1:
                        return CharacterSet.GSM7;
                    case 2:
                        return CharacterSet.UCS2;
                    default:
                        if ((this.code & 0x04) == 0)
                            return CharacterSet.GSM7;
                        else
                            return CharacterSet.GSM8;
                }
            default:
                return CharacterSet.Reserved;
        }
    }

    public boolean getIsCompressed() {
        if (((this.code & 0xC0) == 0 || (this.code & 0xC0) == 0x40) && (this.code & 0x20) != 0)
            return true;
        else
            return false;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder();

        sb.append("TP-Data-Coding-Scheme [");
        sb.append("Code=");
        sb.append(this.code);
        sb.append(", DataCodingGroup=");
        sb.append(this.getDataCodingGroup());
        if (this.getMessageClass() != null) {
            sb.append(", MessageClass=");
            sb.append(this.getMessageClass());
        }
        if (this.getDataCodingSchemaIndicationType() != null) {
            sb.append(", IndicationType=");
            sb.append(this.getDataCodingSchemaIndicationType());
        }
        if (this.getSetIndicationActive() != null) {
            sb.append(", SetIndicationActive=");
            sb.append(this.getSetIndicationActive());
        }
        sb.append(", CharacterSet=");
        sb.append(this.getCharacterSet());
        if (this.getIsCompressed())
            sb.append(", Compressed");
        sb.append("]");

        return sb.toString();
    }
}