jellyfin/Emby.Common.Implementations/IO/SharpCifs/Smb/SmbException.cs
2017-04-01 20:36:06 -04:00

213 lines
5.3 KiB
C#

// This code is derived from jcifs smb client library <jcifs at samba dot org>
// Ported by J. Arturo <webmaster at komodosoft dot net>
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.IO;
using SharpCifs.Util;
using SharpCifs.Util.Sharpen;
namespace SharpCifs.Smb
{
/// <summary>
/// There are hundreds of error codes that may be returned by a CIFS
/// server.
/// </summary>
/// <remarks>
/// There are hundreds of error codes that may be returned by a CIFS
/// server. Rather than represent each with it's own <code>Exception</code>
/// class, this class represents all of them. For many of the popular
/// error codes, constants and text messages like "The device is not ready"
/// are provided.
/// <p>
/// The jCIFS client maps DOS error codes to NTSTATUS codes. This means that
/// the user may recieve a different error from a legacy server than that of
/// a newer varient such as Windows NT and above. If you should encounter
/// such a case, please report it to jcifs at samba dot org and we will
/// change the mapping.
/// </remarks>
public class SmbException : IOException
{
internal static string GetMessageByCode(int errcode)
{
if (errcode == 0)
{
return "NT_STATUS_SUCCESS";
}
if ((errcode & unchecked((int)(0xC0000000))) == unchecked((int)(0xC0000000)))
{
int min = 1;
int max = NtStatus.NtStatusCodes.Length - 1;
while (max >= min)
{
int mid = (min + max) / 2;
if (errcode > NtStatus.NtStatusCodes[mid])
{
min = mid + 1;
}
else
{
if (errcode < NtStatus.NtStatusCodes[mid])
{
max = mid - 1;
}
else
{
return NtStatus.NtStatusMessages[mid];
}
}
}
}
else
{
int min = 0;
int max = DosError.DosErrorCodes.Length - 1;
while (max >= min)
{
int mid = (min + max) / 2;
if (errcode > DosError.DosErrorCodes[mid][0])
{
min = mid + 1;
}
else
{
if (errcode < DosError.DosErrorCodes[mid][0])
{
max = mid - 1;
}
else
{
return DosError.DosErrorMessages[mid];
}
}
}
}
return "0x" + Hexdump.ToHexString(errcode, 8);
}
internal static int GetStatusByCode(int errcode)
{
if ((errcode & unchecked((int)(0xC0000000))) != 0)
{
return errcode;
}
int min = 0;
int max = DosError.DosErrorCodes.Length - 1;
while (max >= min)
{
int mid = (min + max) / 2;
if (errcode > DosError.DosErrorCodes[mid][0])
{
min = mid + 1;
}
else
{
if (errcode < DosError.DosErrorCodes[mid][0])
{
max = mid - 1;
}
else
{
return DosError.DosErrorCodes[mid][1];
}
}
}
return NtStatus.NtStatusUnsuccessful;
}
internal static string GetMessageByWinerrCode(int errcode)
{
int min = 0;
int max = WinError.WinerrCodes.Length - 1;
while (max >= min)
{
int mid = (min + max) / 2;
if (errcode > WinError.WinerrCodes[mid])
{
min = mid + 1;
}
else
{
if (errcode < WinError.WinerrCodes[mid])
{
max = mid - 1;
}
else
{
return WinError.WinerrMessages[mid];
}
}
}
return errcode + string.Empty;
}
private int _status;
private Exception _rootCause;
public SmbException()
{
}
internal SmbException(int errcode, Exception rootCause) : base(GetMessageByCode(errcode
))
{
_status = GetStatusByCode(errcode);
this._rootCause = rootCause;
}
public SmbException(string msg) : base(msg)
{
_status = NtStatus.NtStatusUnsuccessful;
}
public SmbException(string msg, Exception rootCause) : base(msg)
{
this._rootCause = rootCause;
_status = NtStatus.NtStatusUnsuccessful;
}
public SmbException(int errcode, bool winerr) : base(winerr ? GetMessageByWinerrCode
(errcode) : GetMessageByCode(errcode))
{
_status = winerr ? errcode : GetStatusByCode(errcode);
}
public virtual int GetNtStatus()
{
return _status;
}
public virtual Exception GetRootCause()
{
return _rootCause;
}
public override string ToString()
{
if (_rootCause != null)
{
StringWriter sw = new StringWriter();
PrintWriter pw = new PrintWriter(sw);
Runtime.PrintStackTrace(_rootCause, pw);
return base.ToString() + "\n" + sw;
}
return base.ToString();
}
}
}