mirror of
https://github.com/jellyfin/jellyfin.git
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507 lines
12 KiB
C#
507 lines
12 KiB
C#
// This code is derived from jcifs smb client library <jcifs at samba dot org>
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// Ported by J. Arturo <webmaster at komodosoft dot net>
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the 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,
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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 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, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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using System;
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using System.IO;
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using System.Text;
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using SharpCifs.Util;
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using SharpCifs.Util.Sharpen;
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namespace SharpCifs.Smb
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{
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public class SmbRandomAccessFile //: DataOutput, DataInput
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{
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private const int WriteOptions = unchecked(0x0842);
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private SmbFile _file;
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private long _fp;
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private int _openFlags;
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private int _access;
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private int _readSize;
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private int _writeSize;
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private int _ch;
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private int _options;
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private byte[] _tmp = new byte[8];
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private SmbComWriteAndXResponse _writeAndxResp;
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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/// <exception cref="System.UriFormatException"></exception>
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/// <exception cref="UnknownHostException"></exception>
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public SmbRandomAccessFile(string url, string mode, int shareAccess) : this(new SmbFile
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(url, string.Empty, null, shareAccess), mode)
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{
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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/// <exception cref="System.UriFormatException"></exception>
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/// <exception cref="UnknownHostException"></exception>
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public SmbRandomAccessFile(SmbFile file, string mode)
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{
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this._file = file;
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if (mode.Equals("r"))
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{
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_openFlags = SmbFile.OCreat | SmbFile.ORdonly;
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}
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else
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{
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if (mode.Equals("rw"))
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{
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_openFlags = SmbFile.OCreat | SmbFile.ORdwr | SmbFile.OAppend;
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_writeAndxResp = new SmbComWriteAndXResponse();
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_options = WriteOptions;
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_access = SmbConstants.FileReadData | SmbConstants.FileWriteData;
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}
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else
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{
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throw new ArgumentException("Invalid mode");
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}
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}
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file.Open(_openFlags, _access, SmbFile.AttrNormal, _options);
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_readSize = file.Tree.Session.transport.RcvBufSize - 70;
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_writeSize = file.Tree.Session.transport.SndBufSize - 70;
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_fp = 0L;
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual int Read()
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{
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if (Read(_tmp, 0, 1) == -1)
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{
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return -1;
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}
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return _tmp[0] & unchecked(0xFF);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual int Read(byte[] b)
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{
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return Read(b, 0, b.Length);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual int Read(byte[] b, int off, int len)
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{
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if (len <= 0)
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{
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return 0;
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}
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long start = _fp;
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// ensure file is open
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if (_file.IsOpen() == false)
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{
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_file.Open(_openFlags, 0, SmbFile.AttrNormal, _options);
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}
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int r;
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int n;
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SmbComReadAndXResponse response = new SmbComReadAndXResponse(b, off);
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do
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{
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r = len > _readSize ? _readSize : len;
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_file.Send(new SmbComReadAndX(_file.Fid, _fp, r, null), response);
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if ((n = response.DataLength) <= 0)
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{
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return (int)((_fp - start) > 0L ? _fp - start : -1);
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}
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_fp += n;
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len -= n;
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response.Off += n;
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}
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while (len > 0 && n == r);
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return (int)(_fp - start);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void ReadFully(byte[] b)
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{
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ReadFully(b, 0, b.Length);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void ReadFully(byte[] b, int off, int len)
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{
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int n = 0;
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int count;
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do
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{
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count = Read(b, off + n, len - n);
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if (count < 0)
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{
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throw new SmbException("EOF");
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}
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n += count;
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_fp += count;
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}
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while (n < len);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual int SkipBytes(int n)
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{
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if (n > 0)
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{
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_fp += n;
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return n;
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}
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return 0;
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void Write(int b)
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{
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_tmp[0] = unchecked((byte)b);
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Write(_tmp, 0, 1);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void Write(byte[] b)
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{
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Write(b, 0, b.Length);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void Write(byte[] b, int off, int len)
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{
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if (len <= 0)
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{
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return;
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}
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// ensure file is open
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if (_file.IsOpen() == false)
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{
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_file.Open(_openFlags, 0, SmbFile.AttrNormal, _options);
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}
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int w;
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do
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{
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w = len > _writeSize ? _writeSize : len;
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_file.Send(new SmbComWriteAndX(_file.Fid, _fp, len - w, b, off, w, null), _writeAndxResp
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);
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_fp += _writeAndxResp.Count;
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len -= (int)_writeAndxResp.Count;
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off += (int)_writeAndxResp.Count;
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}
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while (len > 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual long GetFilePointer()
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{
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return _fp;
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void Seek(long pos)
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{
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_fp = pos;
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual long Length()
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{
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return _file.Length();
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void SetLength(long newLength)
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{
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// ensure file is open
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if (_file.IsOpen() == false)
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{
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_file.Open(_openFlags, 0, SmbFile.AttrNormal, _options);
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}
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SmbComWriteResponse rsp = new SmbComWriteResponse();
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_file.Send(new SmbComWrite(_file.Fid, (int)(newLength & unchecked(0xFFFFFFFFL)), 0, _tmp, 0, 0), rsp);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public virtual void Close()
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{
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_file.Close();
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public bool ReadBoolean()
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{
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if ((Read(_tmp, 0, 1)) < 0)
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{
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throw new SmbException("EOF");
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}
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return _tmp[0] != unchecked(unchecked(0x00));
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public byte ReadByte()
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{
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if ((Read(_tmp, 0, 1)) < 0)
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{
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throw new SmbException("EOF");
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}
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return _tmp[0];
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public int ReadUnsignedByte()
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{
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if ((Read(_tmp, 0, 1)) < 0)
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{
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throw new SmbException("EOF");
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}
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return _tmp[0] & unchecked(0xFF);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public short ReadShort()
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{
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if ((Read(_tmp, 0, 2)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_uint16be(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public int ReadUnsignedShort()
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{
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if ((Read(_tmp, 0, 2)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_uint16be(_tmp, 0) & unchecked(0xFFFF);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public char ReadChar()
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{
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if ((Read(_tmp, 0, 2)) < 0)
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{
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throw new SmbException("EOF");
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}
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return (char)Encdec.Dec_uint16be(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public int ReadInt()
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{
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if ((Read(_tmp, 0, 4)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_uint32be(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public long ReadLong()
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{
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if ((Read(_tmp, 0, 8)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_uint64be(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public float ReadFloat()
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{
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if ((Read(_tmp, 0, 4)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_floatbe(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public double ReadDouble()
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{
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if ((Read(_tmp, 0, 8)) < 0)
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{
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throw new SmbException("EOF");
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}
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return Encdec.Dec_doublebe(_tmp, 0);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public string ReadLine()
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{
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StringBuilder input = new StringBuilder();
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int c = -1;
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bool eol = false;
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while (!eol)
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{
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switch (c = Read())
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{
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case -1:
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case '\n':
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{
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eol = true;
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break;
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}
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case '\r':
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{
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eol = true;
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long cur = _fp;
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if (Read() != '\n')
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{
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_fp = cur;
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}
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break;
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}
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default:
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{
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input.Append((char)c);
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break;
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}
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}
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}
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if ((c == -1) && (input.Length == 0))
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{
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return null;
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}
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return input.ToString();
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public string ReadUtf()
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{
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int size = ReadUnsignedShort();
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byte[] b = new byte[size];
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Read(b, 0, size);
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try
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{
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return Encdec.Dec_utf8(b, 0, size);
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}
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catch (IOException ioe)
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{
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throw new SmbException(string.Empty, ioe);
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}
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteBoolean(bool v)
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{
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_tmp[0] = unchecked((byte)(v ? 1 : 0));
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Write(_tmp, 0, 1);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteByte(int v)
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{
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_tmp[0] = unchecked((byte)v);
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Write(_tmp, 0, 1);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteShort(int v)
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{
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Encdec.Enc_uint16be((short)v, _tmp, 0);
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Write(_tmp, 0, 2);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteChar(int v)
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{
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Encdec.Enc_uint16be((short)v, _tmp, 0);
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Write(_tmp, 0, 2);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteInt(int v)
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{
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Encdec.Enc_uint32be(v, _tmp, 0);
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Write(_tmp, 0, 4);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteLong(long v)
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{
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Encdec.Enc_uint64be(v, _tmp, 0);
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Write(_tmp, 0, 8);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteFloat(float v)
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{
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Encdec.Enc_floatbe(v, _tmp, 0);
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Write(_tmp, 0, 4);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteDouble(double v)
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{
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Encdec.Enc_doublebe(v, _tmp, 0);
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Write(_tmp, 0, 8);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteBytes(string s)
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{
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byte[] b = Runtime.GetBytesForString(s);
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Write(b, 0, b.Length);
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}
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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/* public void WriteChars(string s)
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{
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int clen = s.Length;
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int blen = 2 * clen;
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byte[] b = new byte[blen];
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char[] c = new char[clen];
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Sharpen.Runtime.GetCharsForString(s, 0, clen, c, 0);
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for (int i = 0, j = 0; i < clen; i++)
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{
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b[j++] = unchecked((byte)((char)(((uchar)c[i]) >> 8)));
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b[j++] = unchecked((byte)((char)(((uchar)c[i]) >> 0)));
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}
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Write(b, 0, blen);
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}*/
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/// <exception cref="SharpCifs.Smb.SmbException"></exception>
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public void WriteUtf(string str)
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{
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int len = str.Length;
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int ch;
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int size = 0;
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byte[] dst;
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for (int i = 0; i < len; i++)
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{
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ch = str[i];
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size += ch > unchecked(0x07F) ? (ch > unchecked(0x7FF) ? 3 : 2) : 1;
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}
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dst = new byte[size];
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WriteShort(size);
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try
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{
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Encdec.Enc_utf8(str, dst, 0, size);
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}
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catch (IOException ioe)
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{
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throw new SmbException(string.Empty, ioe);
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}
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Write(dst, 0, size);
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}
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}
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}
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