117 lines
4.7 KiB
C#
117 lines
4.7 KiB
C#
/*
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* Copyright (c) Contributors, http://opensimulator.org/
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* See CONTRIBUTORS.TXT for a full list of copyright holders.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * Neither the name of the OpenSimulator Project nor the
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* names of its contributors may be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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using System;
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using System.Collections.Generic;
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using System.Reflection;
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using System.Text;
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using log4net;
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namespace OpenSim.Framework
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{
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public static class PermissionsUtil
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{
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private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
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/// <summary>
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/// Logs permissions flags. Useful when debugging permission problems.
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/// </summary>
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/// <param name="message"></param>
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public static void LogPermissions(String name, String message, uint basePerm, uint curPerm, uint nextPerm)
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{
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m_log.DebugFormat("Permissions of \"{0}\" at \"{1}\": Base {2} ({3:X4}), Current {4} ({5:X4}), NextOwner {6} ({7:X4})",
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name, message,
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PermissionsToString(basePerm), basePerm, PermissionsToString(curPerm), curPerm, PermissionsToString(nextPerm), nextPerm);
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}
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/// <summary>
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/// Converts a permissions bit-mask to a string (e.g., "MCT").
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/// </summary>
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private static string PermissionsToString(uint perms)
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{
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string str = "";
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if ((perms & (int)PermissionMask.Modify) != 0)
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str += "M";
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if ((perms & (int)PermissionMask.Copy) != 0)
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str += "C";
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if ((perms & (int)PermissionMask.Transfer) != 0)
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str += "T";
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if ((perms & (int)PermissionMask.Export) != 0)
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str += "X";
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if (str == "")
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str = ".";
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return str;
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}
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public static void ApplyFoldedPermissions(uint foldedSourcePerms, ref uint targetPerms)
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{
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uint folded = foldedSourcePerms & (uint)PermissionMask.FoldedMask;
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if(folded == 0 || folded == (uint)PermissionMask.FoldedMask) // invalid we need to ignore, or nothing to do
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return;
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folded <<= (int)PermissionMask.FoldingShift;
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folded |= ~(uint)PermissionMask.UnfoldedMask;
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uint tmp = targetPerms;
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tmp &= folded;
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targetPerms = tmp;
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}
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// do not touch MOD
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public static void ApplyNoModFoldedPermissions(uint foldedSourcePerms, ref uint target)
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{
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uint folded = foldedSourcePerms & (uint)PermissionMask.FoldedMask;
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if(folded == 0 || folded == (uint)PermissionMask.FoldedMask) // invalid we need to ignore, or nothing to do
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return;
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folded <<= (int)PermissionMask.FoldingShift;
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folded |= (~(uint)PermissionMask.UnfoldedMask | (uint)PermissionMask.Modify);
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uint tmp = target;
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tmp &= folded;
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target = tmp;
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}
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public static uint FixAndFoldPermissions(uint perms)
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{
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uint tmp = perms;
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// C & T rule
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if((tmp & (uint)(PermissionMask.Copy | PermissionMask.Transfer)) == 0)
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tmp |= (uint)PermissionMask.Transfer;
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// unlock
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tmp |= (uint)PermissionMask.Move;
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tmp &= ~(uint)PermissionMask.FoldedMask;
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tmp |= ((tmp >> (int)PermissionMask.FoldingShift) & (uint)PermissionMask.FoldedMask);
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return tmp;
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}
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}
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}
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