/*

* 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.installer.midp2.uninstall.steps;

import com.nokia.mj.impl.installer.exetable.ExeBall;

import com.nokia.mj.impl.installer.exetable.ExeStep;

import com.nokia.mj.impl.installer.utils.InstallerException;

import com.nokia.mj.impl.installer.utils.Log;

import com.nokia.mj.impl.rt.installer.ApplicationInfoImpl;

import com.nokia.mj.impl.rt.support.ApplicationInfo;

import com.nokia.mj.impl.security.midp.authentication.AuthenticationModule;

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

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

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

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

/**

 * Check if uninstallation is allowed from Nokia-MIDlet-Block-Uninstall

 * attribute and protection domain.

 */

public class CheckUninstallationAllowed extends ExeStep

{

    public void execute(ExeBall aBall)

    {

        UninstallBall ball = (UninstallBall)aBall;

        ball.log("Checking if uninstallation is allowed...");

        // Get protection domain and initialize suite's trusted flag.

        String domain = AuthenticationModule.getInstance()

                        .getProtectionDomainCategory(ball.iStorageHandler.getSession(),

                                                     ball.iSuite.getUid());

        if (domain != null)

        {

            Log.log("Protection domain: " + domain);

            if (domain.equals(ApplicationInfo.UNIDENTIFIED_THIRD_PARTY_DOMAIN))

            {

                ball.iSuite.setTrusted(false);

            }

            // Set domain to ApplicationInfo so that possible uninstallation

            // time security prompts display correct security icons.

            ApplicationInfoImpl appInfoImpl =

                (ApplicationInfoImpl)ApplicationInfo.getInstance();

            appInfoImpl.setProtectionDomain(domain);

        }

        // Uninstallation is always allowed when iForceUninstall flag is set.

        if (ball.iForceUninstall)

        {

            Log.log("Uninstallation allowed because iForceUninstall is set");

            return;

        }

        // Check if Nokia-MIDlet-Block-Uninstall attribute is present.

        String attrName = "Nokia-MIDlet-Block-Uninstall";

        Attribute attr = ball.iSuite.getAttribute(attrName);

        if (attr == null || !attr.isTrusted() ||

                !attr.getValue().equalsIgnoreCase("true"))

        {

            // Attribute does not exist, is not trusted,

            // or does not have value "true", so

            // application can be uninstalled.

            Log.log("Uninstallation not blocked, attribute: " + attr);

            return;

        }

        // Attribute requests blocking uninstallation, now check

        // that application belongs to manufacturer or operator

        // protection domain.

        if (domain != null)

        {

            if (domain.equals(ApplicationInfo.MANUFACTURER_DOMAIN) ||

                    domain.equals(ApplicationInfo.OPERATOR_DOMAIN))

            {

                throw new InstallerException

                (InstallerErrorMessage.UNINST_NOT_ALLOWED, null,

                 InstallerDetailedErrorMessage.UNINST_BLOCKED, null,

                 OtaStatusCode.USER_CANCELLED);

            }

        }

    }

    public void cancel(ExeBall aBall)

    {

        // nop

    }

}