Android example source code file (SmsHeader.java)

This example Android source code file (SmsHeader.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Android by Example" ^TM.

Java - Android tags/keywords

android, arraylist, bytearrayinputstream, concatref, elt_id_application_port_addressing_16_bit, elt_id_application_port_addressing_8_bit, elt_id_concatenated_16_bit_reference, elt_id_concatenated_8_bit_reference, elt_id_enhanced_voice_mail_information, elt_id_rfc_822_email_header, elt_id_udh_source_indication, io, miscelt, portaddrs, smsheader, stringbuilder, telephony, util, utilities, utils

The SmsHeader.java Android example source code

/*
 * Copyright (C) 2006 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.internal.telephony;

import android.telephony.SmsMessage;

import com.android.internal.util.HexDump;

import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;

import java.util.ArrayList;

/**
 * SMS user data header, as specified in TS 23.040 9.2.3.24.
 */
public class SmsHeader {

    // TODO(cleanup): this datastructure is generally referred to as
    // the 'user data header' or UDH, and so the class name should
    // change to reflect this...

    /** SMS user data header information element identifiers.
     * (see TS 23.040 9.2.3.24)
     */
    public static final int ELT_ID_CONCATENATED_8_BIT_REFERENCE       = 0x00;
    public static final int ELT_ID_SPECIAL_SMS_MESSAGE_INDICATION     = 0x01;
    public static final int ELT_ID_APPLICATION_PORT_ADDRESSING_8_BIT  = 0x04;
    public static final int ELT_ID_APPLICATION_PORT_ADDRESSING_16_BIT = 0x05;
    public static final int ELT_ID_SMSC_CONTROL_PARAMS                = 0x06;
    public static final int ELT_ID_UDH_SOURCE_INDICATION              = 0x07;
    public static final int ELT_ID_CONCATENATED_16_BIT_REFERENCE      = 0x08;
    public static final int ELT_ID_WIRELESS_CTRL_MSG_PROTOCOL         = 0x09;
    public static final int ELT_ID_TEXT_FORMATTING                    = 0x0A;
    public static final int ELT_ID_PREDEFINED_SOUND                   = 0x0B;
    public static final int ELT_ID_USER_DEFINED_SOUND                 = 0x0C;
    public static final int ELT_ID_PREDEFINED_ANIMATION               = 0x0D;
    public static final int ELT_ID_LARGE_ANIMATION                    = 0x0E;
    public static final int ELT_ID_SMALL_ANIMATION                    = 0x0F;
    public static final int ELT_ID_LARGE_PICTURE                      = 0x10;
    public static final int ELT_ID_SMALL_PICTURE                      = 0x11;
    public static final int ELT_ID_VARIABLE_PICTURE                   = 0x12;
    public static final int ELT_ID_USER_PROMPT_INDICATOR              = 0x13;
    public static final int ELT_ID_EXTENDED_OBJECT                    = 0x14;
    public static final int ELT_ID_REUSED_EXTENDED_OBJECT             = 0x15;
    public static final int ELT_ID_COMPRESSION_CONTROL                = 0x16;
    public static final int ELT_ID_OBJECT_DISTR_INDICATOR             = 0x17;
    public static final int ELT_ID_STANDARD_WVG_OBJECT                = 0x18;
    public static final int ELT_ID_CHARACTER_SIZE_WVG_OBJECT          = 0x19;
    public static final int ELT_ID_EXTENDED_OBJECT_DATA_REQUEST_CMD   = 0x1A;
    public static final int ELT_ID_RFC_822_EMAIL_HEADER               = 0x20;
    public static final int ELT_ID_HYPERLINK_FORMAT_ELEMENT           = 0x21;
    public static final int ELT_ID_REPLY_ADDRESS_ELEMENT              = 0x22;
    public static final int ELT_ID_ENHANCED_VOICE_MAIL_INFORMATION    = 0x23;

    public static final int PORT_WAP_PUSH = 2948;
    public static final int PORT_WAP_WSP  = 9200;

    public static class PortAddrs {
        public int destPort;
        public int origPort;
        public boolean areEightBits;
    }

    public static class ConcatRef {
        public int refNumber;
        public int seqNumber;
        public int msgCount;
        public boolean isEightBits;
    }

    /**
     * A header element that is not explicitly parsed, meaning not
     * PortAddrs or ConcatRef.
     */
    public static class MiscElt {
        public int id;
        public byte[] data;
    }

    public PortAddrs portAddrs;
    public ConcatRef concatRef;
    public ArrayList<MiscElt> miscEltList = new ArrayList();

    public SmsHeader() {}

    /**
     * Create structured SmsHeader object from serialized byte array representation.
     * (see TS 23.040 9.2.3.24)
     * @param data is user data header bytes
     * @return SmsHeader object
     */
    public static SmsHeader fromByteArray(byte[] data) {
        ByteArrayInputStream inStream = new ByteArrayInputStream(data);
        SmsHeader smsHeader = new SmsHeader();
        while (inStream.available() > 0) {
            /**
             * NOTE: as defined in the spec, ConcatRef and PortAddr
             * fields should not reoccur, but if they do the last
             * occurrence is to be used.  Also, for ConcatRef
             * elements, if the count is zero, sequence is zero, or
             * sequence is larger than count, the entire element is to
             * be ignored.
             */
            int id = inStream.read();
            int length = inStream.read();
            ConcatRef concatRef;
            PortAddrs portAddrs;
            switch (id) {
            case ELT_ID_CONCATENATED_8_BIT_REFERENCE:
                concatRef = new ConcatRef();
                concatRef.refNumber = inStream.read();
                concatRef.msgCount = inStream.read();
                concatRef.seqNumber = inStream.read();
                concatRef.isEightBits = true;
                if (concatRef.msgCount != 0 && concatRef.seqNumber != 0 &&
                        concatRef.seqNumber <= concatRef.msgCount) {
                    smsHeader.concatRef = concatRef;
                }
                break;
            case ELT_ID_CONCATENATED_16_BIT_REFERENCE:
                concatRef = new ConcatRef();
                concatRef.refNumber = (inStream.read() << 8) | inStream.read();
                concatRef.msgCount = inStream.read();
                concatRef.seqNumber = inStream.read();
                concatRef.isEightBits = false;
                if (concatRef.msgCount != 0 && concatRef.seqNumber != 0 &&
                        concatRef.seqNumber <= concatRef.msgCount) {
                    smsHeader.concatRef = concatRef;
                }
                break;
            case ELT_ID_APPLICATION_PORT_ADDRESSING_8_BIT:
                portAddrs = new PortAddrs();
                portAddrs.destPort = inStream.read();
                portAddrs.origPort = inStream.read();
                portAddrs.areEightBits = true;
                smsHeader.portAddrs = portAddrs;
                break;
            case ELT_ID_APPLICATION_PORT_ADDRESSING_16_BIT:
                portAddrs = new PortAddrs();
                portAddrs.destPort = (inStream.read() << 8) | inStream.read();
                portAddrs.origPort = (inStream.read() << 8) | inStream.read();
                portAddrs.areEightBits = false;
                smsHeader.portAddrs = portAddrs;
                break;
            default:
                MiscElt miscElt = new MiscElt();
                miscElt.id = id;
                miscElt.data = new byte[length];
                inStream.read(miscElt.data, 0, length);
                smsHeader.miscEltList.add(miscElt);
            }
        }
        return smsHeader;
    }

    /**
     * Create serialized byte array representation from structured SmsHeader object.
     * (see TS 23.040 9.2.3.24)
     * @return Byte array representing the SmsHeader
     */
    public static byte[] toByteArray(SmsHeader smsHeader) {
        if ((smsHeader.portAddrs == null) &&
            (smsHeader.concatRef == null) &&
            (smsHeader.miscEltList.size() == 0)) {
            return null;
        }

        ByteArrayOutputStream outStream = new ByteArrayOutputStream(SmsMessage.MAX_USER_DATA_BYTES);
        ConcatRef concatRef = smsHeader.concatRef;
        if (concatRef != null) {
            if (concatRef.isEightBits) {
                outStream.write(ELT_ID_CONCATENATED_8_BIT_REFERENCE);
                outStream.write(3);
                outStream.write(concatRef.refNumber);
            } else {
                outStream.write(ELT_ID_CONCATENATED_16_BIT_REFERENCE);
                outStream.write(4);
                outStream.write(concatRef.refNumber >>> 8);
                outStream.write(concatRef.refNumber & 0x00FF);
            }
            outStream.write(concatRef.msgCount);
            outStream.write(concatRef.seqNumber);
        }
        PortAddrs portAddrs = smsHeader.portAddrs;
        if (portAddrs != null) {
            if (portAddrs.areEightBits) {
                outStream.write(ELT_ID_APPLICATION_PORT_ADDRESSING_8_BIT);
                outStream.write(2);
                outStream.write(portAddrs.destPort);
                outStream.write(portAddrs.origPort);
            } else {
                outStream.write(ELT_ID_APPLICATION_PORT_ADDRESSING_16_BIT);
                outStream.write(4);
                outStream.write(portAddrs.destPort >>> 8);
                outStream.write(portAddrs.destPort & 0x00FF);
                outStream.write(portAddrs.origPort >>> 8);
                outStream.write(portAddrs.origPort & 0x00FF);
            }
        }
        for (MiscElt miscElt : smsHeader.miscEltList) {
            outStream.write(miscElt.id);
            outStream.write(miscElt.data.length);
            outStream.write(miscElt.data, 0, miscElt.data.length);
        }
        return outStream.toByteArray();
    }

    @Override
    public String toString() {
        StringBuilder builder = new StringBuilder();
        builder.append("UserDataHeader ");
        builder.append("{ ConcatRef ");
        if (concatRef == null) {
            builder.append("unset");
        } else {
            builder.append("{ refNumber=" + concatRef.refNumber);
            builder.append(", msgCount=" + concatRef.msgCount);
            builder.append(", seqNumber=" + concatRef.seqNumber);
            builder.append(", isEightBits=" + concatRef.isEightBits);
            builder.append(" }");
        }
        builder.append(", PortAddrs ");
        if (portAddrs == null) {
            builder.append("unset");
        } else {
            builder.append("{ destPort=" + portAddrs.destPort);
            builder.append(", origPort=" + portAddrs.origPort);
            builder.append(", areEightBits=" + portAddrs.areEightBits);
            builder.append(" }");
        }
        for (MiscElt miscElt : miscEltList) {
            builder.append(", MiscElt ");
            builder.append("{ id=" + miscElt.id);
            builder.append(", length=" + miscElt.data.length);
            builder.append(", data=" + HexDump.toHexString(miscElt.data));
            builder.append(" }");
        }
        builder.append(" }");
        return builder.toString();
    }

}