jellyfin/Emby.Common.Implementations/IO/SharpCifs/Smb/SmbComNTCreateAndX.cs

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2017-04-02 00:36:06 +00:00
// 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 SharpCifs.Util;
namespace SharpCifs.Smb
{
internal class SmbComNtCreateAndX : AndXServerMessageBlock
{
internal const int FileSupersede = unchecked(0x0);
internal const int FileOpen = unchecked(0x1);
internal const int FileCreate = unchecked(0x2);
internal const int FileOpenIf = unchecked(0x3);
internal const int FileOverwrite = unchecked(0x4);
internal const int FileOverwriteIf = unchecked(0x5);
internal const int FileWriteThrough = unchecked(0x00000002);
internal const int FileSequentialOnly = unchecked(0x00000004);
internal const int FileSynchronousIoAlert = unchecked(0x00000010);
internal const int FileSynchronousIoNonalert = unchecked(0x00000020);
internal const int SecurityContextTracking = unchecked(0x01);
internal const int SecurityEffectiveOnly = unchecked(0x02);
private int _rootDirectoryFid;
private int _extFileAttributes;
private int _shareAccess;
private int _createDisposition;
private int _createOptions;
private int _impersonationLevel;
private long _allocationSize;
private byte _securityFlags;
private int _namelenIndex;
internal int Flags0;
internal int DesiredAccess;
internal SmbComNtCreateAndX(string name, int flags, int access, int shareAccess,
int extFileAttributes, int createOptions, ServerMessageBlock andx) : base(andx)
{
// share access specified in SmbFile
// create disposition
// create options
// security flags
Path = name;
Command = SmbComNtCreateAndx;
DesiredAccess = access;
DesiredAccess |= SmbConstants.FileReadData | SmbConstants.FileReadEa | SmbConstants.FileReadAttributes;
// extFileAttributes
this._extFileAttributes = extFileAttributes;
// shareAccess
this._shareAccess = shareAccess;
// createDisposition
if ((flags & SmbFile.OTrunc) == SmbFile.OTrunc)
{
// truncate the file
if ((flags & SmbFile.OCreat) == SmbFile.OCreat)
{
// create it if necessary
_createDisposition = FileOverwriteIf;
}
else
{
_createDisposition = FileOverwrite;
}
}
else
{
// don't truncate the file
if ((flags & SmbFile.OCreat) == SmbFile.OCreat)
{
// create it if necessary
if ((flags & SmbFile.OExcl) == SmbFile.OExcl)
{
// fail if already exists
_createDisposition = FileCreate;
}
else
{
_createDisposition = FileOpenIf;
}
}
else
{
_createDisposition = FileOpen;
}
}
if ((createOptions & unchecked(0x0001)) == 0)
{
this._createOptions = createOptions | unchecked(0x0040);
}
else
{
this._createOptions = createOptions;
}
_impersonationLevel = unchecked(0x02);
// As seen on NT :~)
_securityFlags = unchecked(unchecked(0x03));
}
// SECURITY_CONTEXT_TRACKING | SECURITY_EFFECTIVE_ONLY
internal override int WriteParameterWordsWireFormat(byte[] dst, int dstIndex)
{
int start = dstIndex;
dst[dstIndex++] = unchecked(unchecked(0x00));
// name length without counting null termination
_namelenIndex = dstIndex;
dstIndex += 2;
WriteInt4(Flags0, dst, dstIndex);
dstIndex += 4;
WriteInt4(_rootDirectoryFid, dst, dstIndex);
dstIndex += 4;
WriteInt4(DesiredAccess, dst, dstIndex);
dstIndex += 4;
WriteInt8(_allocationSize, dst, dstIndex);
dstIndex += 8;
WriteInt4(_extFileAttributes, dst, dstIndex);
dstIndex += 4;
WriteInt4(_shareAccess, dst, dstIndex);
dstIndex += 4;
WriteInt4(_createDisposition, dst, dstIndex);
dstIndex += 4;
WriteInt4(_createOptions, dst, dstIndex);
dstIndex += 4;
WriteInt4(_impersonationLevel, dst, dstIndex);
dstIndex += 4;
dst[dstIndex++] = _securityFlags;
return dstIndex - start;
}
internal override int WriteBytesWireFormat(byte[] dst, int dstIndex)
{
int n;
n = WriteString(Path, dst, dstIndex);
WriteInt2((UseUnicode ? Path.Length * 2 : n), dst, _namelenIndex);
return n;
}
internal override int ReadParameterWordsWireFormat(byte[] buffer, int bufferIndex
)
{
return 0;
}
internal override int ReadBytesWireFormat(byte[] buffer, int bufferIndex)
{
return 0;
}
public override string ToString()
{
return "SmbComNTCreateAndX[" + base.ToString() + ",flags=0x" + Hexdump
.ToHexString(Flags0, 2) + ",rootDirectoryFid=" + _rootDirectoryFid + ",desiredAccess=0x"
+ Hexdump.ToHexString(DesiredAccess, 4) + ",allocationSize=" + _allocationSize +
",extFileAttributes=0x" + Hexdump.ToHexString(_extFileAttributes, 4) + ",shareAccess=0x"
+ Hexdump.ToHexString(_shareAccess, 4) + ",createDisposition=0x" + Hexdump.ToHexString
(_createDisposition, 4) + ",createOptions=0x" + Hexdump.ToHexString(_createOptions
, 8) + ",impersonationLevel=0x" + Hexdump.ToHexString(_impersonationLevel, 4) + ",securityFlags=0x"
+ Hexdump.ToHexString(_securityFlags, 2) + ",name=" + Path + "]";
}
}
}