Michael Bayne
591dc1541a
easily make use of different permission policies in different circumstances (one can imagine a hypothetical partner who has different access control requirements, perhaps). git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@5118 542714f4-19e9-0310-aa3c-eee0fc999fb1
45 lines
1.7 KiB
Java
45 lines
1.7 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2008 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.presents.data;
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import com.threerings.io.Streamable;
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/**
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* Encapsulates a fine-grained permissions policy. The default policy is to deny access to
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* everything, systems using fine-grained permissions should create a custom policy and provide it
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* at client resolution time via the ClientResolver.
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*/
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public class PermissionPolicy
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implements Streamable, InvocationCodes
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{
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/**
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* Returns null if the specified client has the specified permission, an error code explaining
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* the lack of access if they do not. {@link InvocationCodes#ACCESS_DENIED} should be returned
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* if no more specific explanation is available.
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*/
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public String checkAccess (ClientObject clobj, Permission perm, Object context)
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{
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// by default, you can't do it!
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return ACCESS_DENIED;
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}
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}
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