mirror of
https://github.com/wismna/ModernKeePassLib.git
synced 2025-10-03 15:40:20 -04:00
151 lines
4.4 KiB
C#
151 lines
4.4 KiB
C#
/*
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KeePass Password Safe - The Open-Source Password Manager
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Copyright (C) 2003-2020 Dominik Reichl <dominik.reichl@t-online.de>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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using System;
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using System.Collections.Generic;
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using System.Diagnostics;
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using System.IO;
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using System.Reflection;
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using System.Text;
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using System.Xml;
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namespace ModernKeePassLib.Native
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{
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internal sealed class SimpleStat
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{
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private readonly object m_oPermissions;
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private readonly long m_nUserId;
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private readonly long m_nGroupId;
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private SimpleStat(object oPermissions, long nUserId, long nGroupId)
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{
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if(oPermissions == null) throw new ArgumentNullException("oPermissions");
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m_oPermissions = oPermissions;
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m_nUserId = nUserId;
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m_nGroupId = nGroupId;
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}
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public static SimpleStat Get(string strFilePath)
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{
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try
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{
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Type tUfsi, tUfi;
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object oUfi = GetUnixFileInfo(strFilePath, out tUfsi, out tUfi);
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if(oUfi == null) return null;
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PropertyInfo piPerm = tUfsi.GetProperty("FileAccessPermissions",
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BindingFlags.Public | BindingFlags.Instance);
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if(piPerm == null) { Debug.Assert(false); return null; }
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Debug.Assert(piPerm.PropertyType.IsEnum);
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PropertyInfo piUser = tUfsi.GetProperty("OwnerUserId",
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BindingFlags.Public | BindingFlags.Instance);
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if(piUser == null) { Debug.Assert(false); return null; }
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Debug.Assert(piUser.PropertyType == typeof(long));
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PropertyInfo piGroup = tUfsi.GetProperty("OwnerGroupId",
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BindingFlags.Public | BindingFlags.Instance);
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if(piGroup == null) { Debug.Assert(false); return null; }
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Debug.Assert(piGroup.PropertyType == typeof(long));
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return new SimpleStat(piPerm.GetValue(oUfi, null),
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(long)piUser.GetValue(oUfi, null),
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(long)piGroup.GetValue(oUfi, null));
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}
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catch(Exception) { Debug.Assert(false); }
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return null;
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}
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public static void Set(string strFilePath, SimpleStat s)
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{
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if(s == null) { Debug.Assert(false); return; }
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try
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{
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Type tUfsi, tUfi;
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object oUfi = GetUnixFileInfo(strFilePath, out tUfsi, out tUfi);
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if(oUfi == null) return;
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PropertyInfo piPerm = tUfsi.GetProperty("FileAccessPermissions",
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BindingFlags.Public | BindingFlags.Instance);
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if(piPerm == null) { Debug.Assert(false); return; }
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piPerm.SetValue(oUfi, s.m_oPermissions, null);
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MethodInfo miOwner = tUfsi.GetMethod("SetOwner",
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new Type[] { typeof(long), typeof(long) });
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if(miOwner == null) { Debug.Assert(false); return; }
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miOwner.Invoke(oUfi, new object[] { s.m_nUserId, s.m_nGroupId });
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}
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catch(Exception) { Debug.Assert(false); }
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}
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private static bool GetTypes(out Type tUfsi, out Type tUfi)
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{
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tUfsi = null;
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tUfi = null;
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try
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{
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if(!NativeLib.IsUnix()) return false;
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string strVer = typeof(XmlNode).Assembly.GetName().Version.ToString();
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string strPosix = "Mono.Posix, Version=" + strVer;
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Assembly asmPosix = Assembly.Load(strPosix);
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if(asmPosix == null) { Debug.Assert(false); return false; }
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tUfsi = asmPosix.GetType("Mono.Unix.UnixFileSystemInfo", false);
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tUfi = asmPosix.GetType("Mono.Unix.UnixFileInfo", false);
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bool b = ((tUfsi != null) && (tUfi != null));
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Debug.Assert(b);
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return b;
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}
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catch(Exception) { Debug.Assert(false); }
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return false;
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}
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private static object GetUnixFileInfo(string strFilePath, Type tUfi)
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{
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if(string.IsNullOrEmpty(strFilePath)) { Debug.Assert(false); return null; }
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try
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{
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if(!File.Exists(strFilePath)) { Debug.Assert(false); return null; }
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return Activator.CreateInstance(tUfi, strFilePath);
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}
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catch(Exception) { Debug.Assert(false); }
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return null;
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}
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private static object GetUnixFileInfo(string strFilePath,
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out Type tUfsi, out Type tUfi)
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{
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if(!GetTypes(out tUfsi, out tUfi)) return null;
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return GetUnixFileInfo(strFilePath, tUfi);
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}
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}
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}
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