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Android example source code file (WapPushOverSms.java)

This example Android source code file (WapPushOverSms.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, content, content-type, context, header, length, log_tag, pdu, provider, received, rx, smsdispatcher, string, util, utilities, utils, wake_lock_timeout, wap, wappushoversms, wsptypedecoder

The WapPushOverSms.java Android example source code

/*
 * Copyright (C) 2008 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.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.provider.Telephony;
import android.provider.Telephony.Sms.Intents;
import android.util.Config;
import android.util.Log;

/**
 * WAP push handler class.
 *
 * @hide
 */
public class WapPushOverSms {
    private static final String LOG_TAG = "WAP PUSH";

    private final Context mContext;
    private WspTypeDecoder pduDecoder;
    private SMSDispatcher mSmsDispatcher;

    /**
     * Hold the wake lock for 5 seconds, which should be enough time for
     * any receiver(s) to grab its own wake lock.
     */
    private final int WAKE_LOCK_TIMEOUT = 5000;

    public WapPushOverSms(Phone phone, SMSDispatcher smsDispatcher) {
        mSmsDispatcher = smsDispatcher;
        mContext = phone.getContext();
    }

    /**
     * Dispatches inbound messages that are in the WAP PDU format. See
     * wap-230-wsp-20010705-a section 8 for details on the WAP PDU format.
     *
     * @param pdu The WAP PDU, made up of one or more SMS PDUs
     * @return a result code from {@link Telephony.Sms.Intents}, or
     *         {@link Activity#RESULT_OK} if the message has been broadcast
     *         to applications
     */
    public int dispatchWapPdu(byte[] pdu) {

        if (Config.DEBUG) Log.d(LOG_TAG, "Rx: " + IccUtils.bytesToHexString(pdu));

        int index = 0;
        int transactionId = pdu[index++] & 0xFF;
        int pduType = pdu[index++] & 0xFF;
        int headerLength = 0;

        if ((pduType != WspTypeDecoder.PDU_TYPE_PUSH) &&
                (pduType != WspTypeDecoder.PDU_TYPE_CONFIRMED_PUSH)) {
            if (Config.DEBUG) Log.w(LOG_TAG, "Received non-PUSH WAP PDU. Type = " + pduType);
            return Intents.RESULT_SMS_HANDLED;
        }

        pduDecoder = new WspTypeDecoder(pdu);

        /**
         * Parse HeaderLen(unsigned integer).
         * From wap-230-wsp-20010705-a section 8.1.2
         * The maximum size of a uintvar is 32 bits.
         * So it will be encoded in no more than 5 octets.
         */
        if (pduDecoder.decodeUintvarInteger(index) == false) {
            if (Config.DEBUG) Log.w(LOG_TAG, "Received PDU. Header Length error.");
            return Intents.RESULT_SMS_GENERIC_ERROR;
        }
        headerLength = (int)pduDecoder.getValue32();
        index += pduDecoder.getDecodedDataLength();

        int headerStartIndex = index;

        /**
         * Parse Content-Type.
         * From wap-230-wsp-20010705-a section 8.4.2.24
         *
         * Content-type-value = Constrained-media | Content-general-form
         * Content-general-form = Value-length Media-type
         * Media-type = (Well-known-media | Extension-Media) *(Parameter)
         * Value-length = Short-length | (Length-quote Length)
         * Short-length = <Any octet 0-30>   (octet <= WAP_PDU_SHORT_LENGTH_MAX)
         * Length-quote = <Octet 31>         (WAP_PDU_LENGTH_QUOTE)
         * Length = Uintvar-integer
         */
        if (pduDecoder.decodeContentType(index) == false) {
            if (Config.DEBUG) Log.w(LOG_TAG, "Received PDU. Header Content-Type error.");
            return Intents.RESULT_SMS_GENERIC_ERROR;
        }

        String mimeType = pduDecoder.getValueString();

        index += pduDecoder.getDecodedDataLength();

        byte[] header = new byte[headerLength];
        System.arraycopy(pdu, headerStartIndex, header, 0, header.length);

        byte[] intentData;
        String permission;

        if (mimeType.equals(WspTypeDecoder.CONTENT_TYPE_B_PUSH_CO)) {
            intentData = pdu;
        } else {
            int dataIndex = headerStartIndex + headerLength;
            intentData = new byte[pdu.length - dataIndex];
            System.arraycopy(pdu, dataIndex, intentData, 0, intentData.length);
        }

        if (mimeType.equals(WspTypeDecoder.CONTENT_TYPE_B_MMS)) {
            permission = "android.permission.RECEIVE_MMS";
        } else {
            permission = "android.permission.RECEIVE_WAP_PUSH";
        }

        Intent intent = new Intent(Intents.WAP_PUSH_RECEIVED_ACTION);
        intent.setType(mimeType);
        intent.putExtra("transactionId", transactionId);
        intent.putExtra("pduType", pduType);
        intent.putExtra("header", header);
        intent.putExtra("data", intentData);
        intent.putExtra("contentTypeParameters", pduDecoder.getContentParameters());

        mSmsDispatcher.dispatch(intent, permission);

        return Activity.RESULT_OK;
    }
}

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