/*

* 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.authorization;

import com.nokia.mj.impl.security.midp.common.UserSecuritySettings;

import java.io.ByteArrayOutputStream;

import java.io.IOException;

/**

 * Variant of UserSecuritySettings correlated to the security policy

 */

public class SecurityPolicyPermissionSettings

        implements UserSecuritySettings

{

    private String name;

    private int currentInteractionMode;

    private int[] allowedInteractionModes;

    public SecurityPolicyPermissionSettings(

        String name,

        int currentInteractionMode,

        int[] allowedInteractionModes)

    {

        this.name = name;

        this.currentInteractionMode = currentInteractionMode;

        this.allowedInteractionModes = allowedInteractionModes;

    }

    public String getName()

    {

        return name;

    }

    public int getCurrentInteractionMode()

    {

        return currentInteractionMode;

    }

    public int[] getAllowedInteractionModes()

    {

        return allowedInteractionModes;

    }

    public boolean getBlanketPrompt()

    {

        return false;

    }

    public boolean isInteractionModeAllowed(int interactionMode)

    {

        for (int i=0; allowedInteractionModes != null

                && i<allowedInteractionModes.length; i++)

        {

            if (allowedInteractionModes[i] == interactionMode)

            {

                return true;

            }

        }

        return false;

    }

    public boolean equals(Object o)

    {

        if (this == o)

        {

            return true;

        }

        if (!(o instanceof SecurityPolicyPermissionSettings))

        {

            return false;

        }

        SecurityPolicyPermissionSettings settings =

            (SecurityPolicyPermissionSettings)o;

        if (this.getCurrentInteractionMode()

                == settings.getCurrentInteractionMode()

                && arraysEqual(this.getAllowedInteractionModes(),

                               settings.getAllowedInteractionModes()))

        {

            return true;

        }

        return false;

    }

    public String toString()

    {

        StringBuffer sb = new StringBuffer();

        sb.append("\nSetting name:\"" + name + "\"");

        sb.append(" Settings current interaction mode:" + currentInteractionMode);

        sb.append(" Settings allowed interaction modes:");

        if (allowedInteractionModes != null)

        {

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

            {

                sb.append(allowedInteractionModes[i]);

                if (i < allowedInteractionModes.length - 1)

                {

                    sb.append(",");

                }

            }

        }

        else

        {

            sb.append("NULL");

        }

        return sb.toString();

    }

    private boolean arraysEqual(int[] array1, int[] array2)

    {

        if (array1 == null && array2 == null)

        {

            return true;

        }

        if ((array1 == null && array2 != null) ||

                (array1 != null && array2 == null) ||

                (array1.length != array2.length))

        {

            return false;

        }

        for (int i=0; i<array1.length; i++)

        {

            boolean found = false;

            for (int j=0; j<array2.length; j++)

            {

                if (array1[i] == array2[j])

                {

                    found = true;

                    break;

                }

            }

            if (!found)

            {

                return false;

            }

            return true;

        }

        return true;

    }

    public byte[] getBytes() throws IOException

    {

        ByteArrayOutputStream oStream = new ByteArrayOutputStream();

        oStream.write(name.length());

        oStream.write(name.getBytes());

        oStream.write(currentInteractionMode);

        oStream.write(allowedInteractionModes.length);

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

        {

            oStream.write(allowedInteractionModes[i]);

        }

        return oStream.toByteArray();

    }

    public static SecurityPolicyPermissionSettings getFromBytes(byte[] buf)

    {

        int nameLen = buf[SecurityPolicy.index];

        SecurityPolicy.index++;

        String name = new String(buf, SecurityPolicy.index, nameLen);

        SecurityPolicy.index += nameLen;

        int currentInteractionMode = buf[SecurityPolicy.index];

        SecurityPolicy.index++;

        int[] allowedInteractionModes = new int[buf[SecurityPolicy.index]];

        SecurityPolicy.index++;

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

        {

            allowedInteractionModes[i] = buf[SecurityPolicy.index];

            SecurityPolicy.index++;

        }

        return new SecurityPolicyPermissionSettings(name, currentInteractionMode, allowedInteractionModes);

    }

}