/*

* Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies).

* All rights reserved.

* This component and the accompanying materials are made available

* under the terms of "Eclipse Public License v1.0"

* which accompanies this distribution, and is available

* at the URL "http://www.eclipse.org/legal/epl-v10.html".

*

* Initial Contributors:

* Nokia Corporation - initial contribution.

*

* Contributors:

*

* Description:

*

*/

package com.nokia.mj.impl.security.midp.common;

import com.nokia.mj.impl.utils.Tokenizer;

import com.nokia.mj.impl.utils.exception.InvalidAttributeException;

import com.nokia.mj.impl.utils.InstallerDetailedErrorMessage;

import com.nokia.mj.impl.utils.InstallerErrorMessage;

import com.nokia.mj.impl.utils.OtaStatusCode;

/**

 * Specifies the allowed MCC (3 digits) and MNC (2 or 3 digits) tuples,

 * separated by a hyphen (Unicode U+002D), to limit the execution to certain

 * networks for any MIDlets within a MIDlet suite bound to the Operator

 * Protection Domain

 */

public class NetworkRestrictionsAttribute

{

    /**

     * The JAR attribute holding the network restriction info

     */

    public static final String ATTRIBUTE_NAME

    = "MIDlet-Operator-Allowed";

    /* The network restrictions contained in the attribute */

    private NetworkRestriction[] restrictions;

    public NetworkRestrictionsAttribute(

        String attrValue)

    {

        if (attrValue == null)

        {

            // nothing to validate

            return;

        }

        // mainAttrValue: MCC-MNC MCC-MNC ...

        String[] tokens = Tokenizer.split(attrValue, " ");

        if (tokens == null || tokens.length == 0)

        {

            throw new InvalidAttributeException(

                InstallerErrorMessage.INST_CORRUPT_PKG,

                null, /* no params for short msg */

                InstallerDetailedErrorMessage.ATTR_HANDLING_FAILED,

                new String[] {ATTRIBUTE_NAME},

                OtaStatusCode.INVALID_JAR);

        }

        restrictions = new NetworkRestriction[tokens.length];

        // validate the tuples

        for (int i=0; i<tokens.length; i++)

        {

            // the format of a token must be MCC-MNC, where MCC

            // is 3 digits and MNC is 2 or 3 digits

            boolean validToken = (tokens[i].length() == 6

                                  || tokens[i].length() == 7)

                                 && tokens[i].charAt(3) == '-'

                                 && tokens[i].charAt(0) >= '0' && tokens[i].charAt(0)<='9'

                                 && tokens[i].charAt(1) >= '0' && tokens[i].charAt(1)<='9'

                                 && tokens[i].charAt(2) >= '0' && tokens[i].charAt(2)<='9'

                                 && tokens[i].charAt(4) >= '0' && tokens[i].charAt(4)<='9'

                                 && tokens[i].charAt(5) >= '0' && tokens[i].charAt(5)<='9'

                                 && (tokens[i].length() == 6 ||

                                     (tokens[i].charAt(6) >= '0' && tokens[i].charAt(6)<='9'));

            if (!validToken)

            {

                throw new InvalidAttributeException(

                    InstallerErrorMessage.INST_CORRUPT_PKG,

                    null, /* no params for short msg */

                    InstallerDetailedErrorMessage.ATTR_HANDLING_FAILED,

                    new String[] {ATTRIBUTE_NAME},

                    OtaStatusCode.INVALID_JAR);

            }

            restrictions[i] = new NetworkRestriction(

                tokens[i].substring(0,3),

                tokens[i].substring(4));

        }

    }

    public NetworkRestriction[] getRestrictions()

    {

        return restrictions;

    }

}