clockwerk-opensim – Blame information for rev 1

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1 vero 1 /*
2 * Copyright (c) Contributors, http://opensimulator.org/
3 * See CONTRIBUTORS.TXT for a full list of copyright holders.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 * * Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * * Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 * * Neither the name of the OpenSimulator Project nor the
13 * names of its contributors may be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
17 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
18 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
20 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
21 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
22 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
23 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27  
28 using System;
29 using System.Collections.Generic;
30 using System.Reflection;
31 using System.Text;
32 using log4net;
33  
34 namespace OpenSim.Framework
35 {
36 public static class PermissionsUtil
37 {
38 private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);
39  
40 /// <summary>
41 /// Logs permissions flags. Useful when debugging permission problems.
42 /// </summary>
43 /// <param name="message"></param>
44 public static void LogPermissions(String name, String message, uint basePerm, uint curPerm, uint nextPerm)
45 {
46 m_log.DebugFormat("Permissions of \"{0}\" at \"{1}\": Base {2} ({3:X4}), Current {4} ({5:X4}), NextOwner {6} ({7:X4})",
47 name, message,
48 PermissionsToString(basePerm), basePerm, PermissionsToString(curPerm), curPerm, PermissionsToString(nextPerm), nextPerm);
49 }
50  
51 /// <summary>
52 /// Converts a permissions bit-mask to a string (e.g., "MCT").
53 /// </summary>
54 private static string PermissionsToString(uint perms)
55 {
56 string str = "";
57 if ((perms & (int)PermissionMask.Modify) != 0)
58 str += "M";
59 if ((perms & (int)PermissionMask.Copy) != 0)
60 str += "C";
61 if ((perms & (int)PermissionMask.Transfer) != 0)
62 str += "T";
63 if (str == "")
64 str = ".";
65 return str;
66 }
67  
68 /// <summary>
69 /// Applies an object's folded permissions to its regular permissions.
70 /// </summary>
71 /// <param name="foldedPerms">The folded permissions. Only the lowest 7 bits are examined.</param>
72 /// <param name="mainPerms">The permissions variable to modify.</param>
73 public static void ApplyFoldedPermissions(uint foldedPerms, ref uint mainPerms)
74 {
75 if ((foldedPerms & 7) == 0)
76 return; // assume that if the folded permissions are 0 then this means that they weren't actually recorded
77  
78 if ((foldedPerms & ((uint)PermissionMask.Copy >> 13)) == 0)
79 mainPerms &= ~(uint)PermissionMask.Copy;
80 if ((foldedPerms & ((uint)PermissionMask.Transfer >> 13)) == 0)
81 mainPerms &= ~(uint)PermissionMask.Transfer;
82 if ((foldedPerms & ((uint)PermissionMask.Modify >> 13)) == 0)
83 mainPerms &= ~(uint)PermissionMask.Modify;
84 }
85  
86 }
87 }