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108 lines
4.2 KiB
C#
108 lines
4.2 KiB
C#
// /***************************************************************************
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// Aaru Data Preservation Suite
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// ----------------------------------------------------------------------------
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//
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// Filename : Xattr.cs
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// Author(s) : Natalia Portillo <claunia@claunia.com>
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//
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// Component : CP/M filesystem plugin.
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//
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// --[ Description ] ----------------------------------------------------------
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//
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// Methods to handle CP/M extended attributes (password).
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//
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// --[ License ] --------------------------------------------------------------
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//
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// This library is free software; you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as
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// published by the Free Software Foundation; either version 2.1 of the
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// License, or (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, but
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// 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, see <http://www.gnu.org/licenses/>.
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//
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// ----------------------------------------------------------------------------
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// Copyright © 2011-2020 Natalia Portillo
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// ****************************************************************************/
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using System;
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using System.Collections.Generic;
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using Aaru.CommonTypes.Structs;
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namespace Aaru.Filesystems
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{
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internal partial class CPM
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{
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/// <inheritdoc />
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/// <summary>Reads an extended attribute, alternate data stream or fork from the given file.</summary>
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/// <returns>Error number.</returns>
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/// <param name="path">File path.</param>
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/// <param name="xattr">Extendad attribute, alternate data stream or fork name.</param>
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/// <param name="buf">Buffer.</param>
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public Errno GetXattr(string path, string xattr, ref byte[] buf)
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{
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if(!_mounted)
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return Errno.AccessDenied;
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string[] pathElements = path.Split(new[]
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{
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'/'
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}, StringSplitOptions.RemoveEmptyEntries);
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if(pathElements.Length != 1)
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return Errno.NotSupported;
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if(!_fileCache.ContainsKey(pathElements[0].ToUpperInvariant()))
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return Errno.NoSuchFile;
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if(string.Compare(xattr, "com.caldera.cpm.password", StringComparison.InvariantCulture) == 0)
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if(!_passwordCache.TryGetValue(pathElements[0].ToUpperInvariant(), out buf))
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return Errno.NoError;
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if(string.Compare(xattr, "com.caldera.cpm.password.text", StringComparison.InvariantCulture) != 0)
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return Errno.NoSuchExtendedAttribute;
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return !_passwordCache.TryGetValue(pathElements[0].ToUpperInvariant(), out buf) ? Errno.NoError
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: Errno.NoSuchExtendedAttribute;
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}
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/// <inheritdoc />
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/// <summary>Lists all extended attributes, alternate data streams and forks of the given file.</summary>
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/// <returns>Error number.</returns>
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/// <param name="path">Path.</param>
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/// <param name="xattrs">List of extended attributes, alternate data streams and forks.</param>
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public Errno ListXAttr(string path, out List<string> xattrs)
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{
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xattrs = null;
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if(!_mounted)
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return Errno.AccessDenied;
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string[] pathElements = path.Split(new[]
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{
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'/'
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}, StringSplitOptions.RemoveEmptyEntries);
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if(pathElements.Length != 1)
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return Errno.NotSupported;
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if(!_fileCache.ContainsKey(pathElements[0].ToUpperInvariant()))
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return Errno.NoSuchFile;
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xattrs = new List<string>();
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if(_passwordCache.ContainsKey(pathElements[0].ToUpperInvariant()))
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xattrs.Add("com.caldera.cpm.password");
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if(_decodedPasswordCache.ContainsKey(pathElements[0].ToUpperInvariant()))
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xattrs.Add("com.caldera.cpm.password.text");
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return Errno.NoError;
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}
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}
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} |