mcs/class/corlib/System.IO.IsolatedStorage/MoonIsolatedStorageFile.cs

   1 //
   2 // System.IO.IsolatedStorage.MoonIsolatedStorageFile
   3 //
   4 // Moonlight's implementation for the IsolatedStorageFile
   5 //
   6 // Authors
   7 //      Miguel de Icaza (miguel@novell.com)
   8 //
   9 // Copyright (C) 2007 Novell, Inc (http://www.novell.com)
  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 #if NET_2_1
  31 using System;
  32 using System.IO;
  33 using System.Security;
  34
  35 namespace System.IO.IsolatedStorage {
  36
  37         public sealed class IsolatedStorageFile : IDisposable {
  38                 static string appdir;
  39
  40                 static string TryDirectory (string path)
  41                 {
  42                         try {
  43                                 Directory.CreateDirectory (path);
  44                                 return path;
  45                         } catch {
  46                                 return null;
  47                         }
  48                 }
  49
  50                 static IsolatedStorageFile ()
  51                 {
  52                         string xdg_data_home = Environment.GetEnvironmentVariable ("XDG_DATA_HOME");
  53                         if (xdg_data_home == null || xdg_data_home == String.Empty){
  54                                 xdg_data_home = Environment.GetFolderPath (Environment.SpecialFolder.LocalApplicationData);
  55                         }
  56
  57                         string basedir;
  58                         basedir = TryDirectory (Path.Combine (xdg_data_home, "moonlight"));
  59                         if (basedir == null){
  60                                 //
  61                                 // Maybe try a few others?
  62                                 //
  63                                 return;
  64                         }
  65
  66                         // FIXME: Use the actual url from the plugin for this.
  67                         appdir = Path.Combine (basedir, "url");
  68                         try {
  69                                 Directory.CreateDirectory (appdir);
  70                         } catch {
  71                                 appdir = null;
  72                         }
  73                 }
  74
  75                 internal IsolatedStorageFile (string basedir)
  76                 {
  77                 }
  78
  79                 [SecuritySafeCritical]
  80                 public static IsolatedStorageFile GetUserStoreForApplication ()
  81                 {
  82                         if (appdir == null)
  83                                 throw new SecurityException ();
  84
  85                         return new IsolatedStorageFile (appdir);
  86                 }
  87
  88                 internal static string Verify (string path)
  89                 {
  90                         try {
  91                                 string full = Path.GetFullPath (Path.Combine (appdir, path));
  92                                 if (full.StartsWith (appdir + Path.DirectorySeparatorChar))
  93                                         return full;
  94                         } catch {
  95                                 throw new IsolatedStorageException ();
  96                         }
  97                         throw new IsolatedStorageException ();
  98                 }
  99
 100                 [SecuritySafeCritical]
 101                 public void CreateDirectory (string dir)
 102                 {
 103                         Verify (dir);
 104                         Directory.CreateDirectory (dir);
 105                 }
 106
 107                 [SecuritySafeCritical]
 108                 public void DeleteDirectory (string dir)
 109                 {
 110                         Verify (dir);
 111                         Directory.Delete (dir);
 112                 }
 113
 114                 [SecuritySafeCritical]
 115                 public string [] GetDirectoryNames (string searchPattern)
 116                 {
 117                         if (searchPattern.IndexOf ('/') != -1)
 118                                 throw new IsolatedStorageException ();
 119
 120                         return Directory.GetDirectories (appdir, searchPattern);
 121                 }
 122
 123                 [SecuritySafeCritical]
 124                 public string [] GetFileNames (string searchPattern)
 125                 {
 126                         if (searchPattern.IndexOf ('/') != -1)
 127                                 throw new IsolatedStorageException ();
 128
 129                         return Directory.GetDirectories (appdir, searchPattern);
 130                 }
 131
 132                 [SecuritySafeCritical]
 133                 public void DeleteFile (string file)
 134                 {
 135                         Verify (file);
 136                 }
 137
 138                 public void Dispose ()
 139                 {
 140                 }
 141
 142                 [SecuritySafeCritical]
 143                 public void Close ()
 144                 {
 145                 }
 146
 147                 [CLSCompliant(false)]
 148                 public ulong CurrentSize {
 149                         get {
 150                                 return 0;
 151                         }
 152                 }
 153
 154                 [CLSCompliant(false)]
 155                 public ulong MaximumSize {
 156                         get {
 157                                 return 1024*1024;
 158                         }
 159                 }
 160         }
 161 }
 162 #endif