mcs/class/Mono.Data.Tds/Mono.Data.Tds.Protocol/Tds42.cs

   1 //
   2 // Mono.Data.Tds.Protocol.Tds42.cs
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //
   7 // Copyright (C) 2002 Tim Coleman
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System;
  32 using System.Security;
  33
  34 namespace Mono.Data.Tds.Protocol {
  35         public sealed class Tds42 : Tds
  36         {
  37                 #region Fields
  38
  39                 public static readonly TdsVersion Version = TdsVersion.tds42;
  40
  41                 #endregion // Fields
  42
  43                 #region Constructors
  44
  45                 public Tds42 (string server, int port)
  46                         : this (server, port, 512, 15)
  47                 {
  48                 }
  49
  50                 public Tds42 (string server, int port, int packetSize, int timeout)
  51                         : base (server, port, packetSize, timeout, Version)
  52                 {
  53                 }
  54
  55                 #endregion // Constructors
  56
  57                 #region Methods
  58
  59                 public override bool Connect (TdsConnectionParameters connectionParameters)
  60                 {
  61                         if (IsConnected)
  62                                 throw new InvalidOperationException ("The connection is already open.");
  63
  64                         SetCharset (connectionParameters.Charset);
  65                         SetLanguage (connectionParameters.Language);
  66
  67                         byte pad = (byte) 0;
  68                         byte[] empty = new byte[0];
  69
  70                         Comm.StartPacket (TdsPacketType.Logon);
  71
  72                         // hostname (offset 0)
  73                         byte[] tmp = Comm.Append (connectionParameters.Hostname, 30, pad);
  74                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
  75
  76                         // username (offset 31 0x1f)
  77                         tmp = Comm.Append (connectionParameters.User, 30, pad);
  78                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
  79
  80                         // password (offset 62 0x3e)
  81                         tmp = Comm.Append (GetPlainPassword(connectionParameters.Password), 30, pad);
  82                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
  83
  84                         // hostproc (offset 93 0x5d)
  85                         Comm.Append ("00000116", 8, pad);
  86
  87                         // unused (offset 109 0x6d)
  88                         Comm.Append (empty, (30-14), pad);
  89
  90                         // apptype
  91                         Comm.Append ((byte) 0x0);
  92                         Comm.Append ((byte) 0xa0);
  93                         Comm.Append ((byte) 0x24);
  94                         Comm.Append ((byte) 0xcc);
  95                         Comm.Append ((byte) 0x50);
  96                         Comm.Append ((byte) 0x12);
  97
  98                         // hostproc length
  99                         Comm.Append ((byte) 8);
 100
 101                         // Byte order of 2 byte ints
 102                         // 2 = <MSB, LSB>, 3 = <LSB, MSB>
 103                         Comm.Append ((byte) 3);
 104
 105                         // Byte order of 4 byte ints
 106                         // 0 = <MSB, LSB>, 1 = <LSB, MSB>
 107                         Comm.Append ((byte) 1);
 108
 109                         // Character representation
 110                         // (6 = ASCII, 7 = EBCDIC)
 111                         Comm.Append ((byte) 6);
 112
 113                         // Eight byte floating point representation
 114                         // 4 = IEEE <MSB, ..., LSB>
 115                         // 5 = VAX 'D'
 116                         // 10 = IEEE <LSB, ..., MSB>
 117                         // 11 = ND5000
 118                         Comm.Append ((byte) 10);
 119
 120                         // Eight byte date format
 121                         // 8 = <MSB, ..., LSB>
 122                         Comm.Append ((byte) 9);
 123
 124                         // notify of use db
 125                         Comm.Append ((byte) 1);
 126
 127                         // disallow dump/load and bulk insert
 128                         Comm.Append ((byte) 1);
 129
 130                         // sql interface type
 131                         Comm.Append ((byte) 0);
 132
 133                         // type of network connection
 134                         Comm.Append ((byte) 0);
 135
 136
 137                         // spare [7]
 138                         Comm.Append (empty, 7, pad);
 139                         // appname
 140                         tmp = Comm.Append (connectionParameters.ApplicationName, 30, pad);
 141                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
 142
 143                         // server name
 144                         tmp = Comm.Append (DataSource, 30, pad);
 145                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
 146
 147                         // remote passwords
 148                         Comm.Append (empty, 2, pad);
 149                         tmp = Comm.Append (GetPlainPassword(connectionParameters.Password), 253, pad);
 150                         Comm.Append ((byte) (tmp.Length < 253 ? tmp.Length + 2 : 253 + 2));
 151
 152                         // tds version
 153                         Comm.Append ((byte) (((byte) Version) / 10));
 154                         Comm.Append ((byte) (((byte) Version) % 10));
 155                         Comm.Append ((byte) 0);
 156                         Comm.Append ((byte) 0);
 157
 158                         // prog name
 159                         tmp = Comm.Append (connectionParameters.ProgName, 10, pad);
 160                         Comm.Append ((byte) (tmp.Length < 10 ? tmp.Length : 10));
 161
 162                         // prog version
 163                         Comm.Append ((byte) 6);
 164
 165                         // Tell the server we can handle SQLServer version 6
 166                         Comm.Append ((byte) 0);
 167
 168                         // Send zero to tell the server we can't handle any other version
 169                         Comm.Append ((byte) 0);
 170                         Comm.Append ((byte) 0);
 171
 172                         // auto convert short
 173                         Comm.Append ((byte) 0);
 174
 175                         // type of flt4
 176                         Comm.Append ((byte) 0x0d);
 177
 178                         // type of date4
 179                         Comm.Append ((byte) 0x11);
 180
 181                         // language
 182                         tmp = Comm.Append (Language, 30, pad);
 183                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
 184
 185                         // notify on lang change
 186                         Comm.Append ((byte) 1);
 187
 188                         // security label hierarchy
 189                         Comm.Append ((short) 0);
 190
 191                         // security components
 192                         Comm.Append (empty, 8, pad);
 193
 194                         // security spare
 195                         Comm.Append ((short) 0);
 196
 197                         // security login role
 198                         Comm.Append ((byte) 0);
 199
 200                         // charset
 201                         tmp = Comm.Append (Charset, 30, pad);
 202                         Comm.Append ((byte) (tmp.Length < 30 ? tmp.Length : 30));
 203
 204                         // notify on charset change
 205                         Comm.Append ((byte) 1);
 206
 207                         // length of tds packets
 208                         tmp = Comm.Append (PacketSize.ToString (), 6, pad);
 209                         Comm.Append ((byte) 3);
 210
 211                         // pad out to a longword
 212                         Comm.Append (empty, 8, pad);
 213
 214                         Comm.SendPacket ();
 215
 216                         MoreResults = true;
 217                         SkipToEnd ();
 218
 219                         return IsConnected;
 220                 }
 221
 222                 protected override void ProcessColumnInfo ()
 223                 {
 224                         byte precision;
 225                         byte scale;
 226                         int totalLength = Comm.GetTdsShort ();
 227                         int bytesRead = 0;
 228
 229                         while (bytesRead < totalLength) {
 230                                 scale = 0;
 231                                 precision = 0;
 232
 233                                 int bufLength = -1;
 234                                 byte[] flagData = new byte[4];
 235                                 for (int i = 0; i < 4; i += 1) {
 236                                         flagData[i] = Comm.GetByte ();
 237                                         bytesRead += 1;
 238                                 }
 239                                 bool nullable = (flagData[2] & 0x01) > 0;
 240                                 //bool caseSensitive = (flagData[2] & 0x02) > 0;
 241                                 bool writable = (flagData[2] & 0x0c) > 0;
 242                                 //bool autoIncrement = (flagData[2] & 0x10) > 0;
 243
 244                                 string tableName = String.Empty;
 245                                 TdsColumnType columnType = (TdsColumnType) Comm.GetByte ();
 246
 247                                 bytesRead += 1;
 248
 249                                 if (columnType == TdsColumnType.Text || columnType == TdsColumnType.Image) {
 250                                         Comm.Skip (4);
 251                                         bytesRead += 4;
 252
 253                                         int tableNameLength = Comm.GetTdsShort ();
 254                                         bytesRead += 2;
 255                                         tableName = Comm.GetString (tableNameLength);
 256                                         bytesRead += tableNameLength;
 257                                         bufLength = 2 << 31 - 1;
 258                                 }
 259                                 else if (columnType == TdsColumnType.Decimal || columnType == TdsColumnType.Numeric) {
 260                                         bufLength = Comm.GetByte ();
 261                                         bytesRead += 1;
 262                                         precision = Comm.GetByte ();
 263                                         bytesRead += 1;
 264                                         scale = Comm.GetByte ();
 265                                         bytesRead += 1;
 266                                 }
 267                                 else if (IsFixedSizeColumn (columnType))
 268                                         bufLength = LookupBufferSize (columnType);
 269                                 else {
 270                                         bufLength = (int) Comm.GetByte () & 0xff;
 271                                         bytesRead += 1;
 272                                 }
 273
 274                                 TdsDataColumn col = new TdsDataColumn ();
 275                                 int index = Columns.Add (col);
 276 #if NET_2_0
 277                                 col.ColumnType = columnType;
 278                                 col.ColumnSize = bufLength;
 279                                 col.ColumnName = ColumnNames[index] as string;
 280                                 col.NumericPrecision = precision;
 281                                 col.NumericScale = scale;
 282                                 col.IsReadOnly = !writable;
 283                                 col.BaseTableName = tableName;
 284                                 col.AllowDBNull = nullable;
 285 #else
 286                                 col["ColumnType"] = columnType;
 287                                 col["ColumnSize"] = bufLength;
 288                                 col["ColumnName"] = ColumnNames[index];
 289                                 col["NumericPrecision"] = precision;
 290                                 col["NumericScale"] = scale;
 291                                 col["IsReadOnly"] = !writable;
 292                                 col["BaseTableName"] = tableName;
 293                                 col["AllowDBNull"] = nullable;
 294 #endif
 295                         }
 296                 }
 297
 298                 #endregion // Methods
 299         }
 300 }