mcs/class/corlib/Test/System.IO/FileStreamCas.cs

   1 //
   2 // FileStreamCas.cs -CAS unit tests for System.IO.FileStream
   3 //
   4 // Author:
   5 //      Sebastien Pouliot  <sebastien@ximian.com>
   6 //
   7 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 using NUnit.Framework;
  30
  31 using System;
  32 using System.IO;
  33 using System.Reflection;
  34 using System.Security;
  35 using System.Security.Permissions;
  36 using System.Threading;
  37
  38 namespace MonoCasTests.System.IO {
  39
  40         [TestFixture]
  41         [Category ("CAS")]
  42         public class FileStreamCas {
  43
  44                 private MonoTests.System.IO.FileStreamTest fst;
  45                 private const int timeout = 30000;
  46                 private string message;
  47                 private string readfile;
  48                 private string writefile;
  49
  50                 static ManualResetEvent reset;
  51
  52                 [TestFixtureSetUp]
  53                 public void FixtureSetUp ()
  54                 {
  55                         // this occurs with a "clean" stack (full trust)
  56                         fst  = new MonoTests.System.IO.FileStreamTest ();
  57                         reset = new ManualResetEvent (false);
  58                         readfile = Path.GetTempFileName ();
  59                         writefile = Path.GetTempFileName ();
  60                 }
  61
  62                 [TestFixtureTearDown]
  63                 public void FixtureTearDown ()
  64                 {
  65                         reset.Close ();
  66                         if (File.Exists (readfile))
  67                                 File.Delete (readfile);
  68                         if (File.Exists (writefile))
  69                                 File.Delete (writefile);
  70                 }
  71
  72                 [SetUp]
  73                 public void SetUp ()
  74                 {
  75                         if (!SecurityManager.SecurityEnabled)
  76                                 Assert.Ignore ("SecurityManager.SecurityEnabled is OFF");
  77                 }
  78
  79                 // Partial Trust Tests - i.e. call "normal" unit with reduced privileges
  80
  81                 [Test]
  82                 [ExpectedException (typeof (SecurityException))]
  83                 public void PartialTrust_DenyUnrestricted_Failure ()
  84                 {
  85                         try {
  86                                 // SetUp/TearDown requires FileIOPermission
  87                                 fst.SetUp ();
  88                                 // so does the call but that's the test ;-)
  89                                 CallRestricted (fst);
  90                         }
  91                         finally {
  92                                 fst.TearDown ();
  93                         }
  94                 }
  95
  96                 [PermissionSet (SecurityAction.Deny, Unrestricted = true)]
  97                 private void CallRestricted (MonoTests.System.IO.FileStreamTest fst)
  98                 {
  99                         fst.TestDefaultProperties ();
 100                 }
 101
 102                 [Test]
 103                 [FileIOPermission (SecurityAction.PermitOnly, Unrestricted = true)]
 104                 public void PartialTrust_PermitOnly_FileIOPermission_Success ()
 105                 {
 106                         fst.SetUp ();
 107                         fst.TestCtr ();
 108                         fst.CtorAccess1Read2Read ();
 109                         fst.Write ();
 110                         fst.Length ();
 111                         fst.Flush ();
 112                         fst.TestDefaultProperties ();
 113                         fst.TestLock ();
 114                         fst.Seek ();
 115                         fst.TestSeek ();
 116                         fst.TestClose ();
 117                         fst.PositionAfterSetLength ();
 118                         fst.ReadBytePastEndOfStream ();
 119                         fst.TearDown ();
 120                 }
 121
 122                 [Test]
 123                 [FileIOPermission (SecurityAction.PermitOnly, Unrestricted = true)]
 124                 [SecurityPermission (SecurityAction.PermitOnly, UnmanagedCode = true)]
 125                 public void PartialTrust_PermitOnly_FileIOPermissionUnmanagedCode_Success ()
 126                 {
 127                         fst.SetUp ();
 128                         fst.TestFlushNotOwningHandle ();
 129                         fst.TearDown ();
 130                 }
 131
 132                 // test Demand by denying the required permissions
 133
 134                 [Test]
 135                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
 136                 [ExpectedException (typeof (SecurityException))]
 137                 public void Ctor_IntPtrFileAccess ()
 138                 {
 139                         new FileStream (IntPtr.Zero, FileAccess.Read);
 140                 }
 141
 142                 [Test]
 143                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
 144                 [ExpectedException (typeof (SecurityException))]
 145                 public void Ctor_IntPtrFileAccessBool ()
 146                 {
 147                         new FileStream (IntPtr.Zero, FileAccess.Read, false);
 148                 }
 149
 150                 [Test]
 151                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
 152                 [ExpectedException (typeof (SecurityException))]
 153                 public void Ctor_IntPtrFileAccessBoolInt ()
 154                 {
 155                         new FileStream (IntPtr.Zero, FileAccess.Read, false, 0);
 156                 }
 157
 158                 [Test]
 159                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
 160                 [ExpectedException (typeof (SecurityException))]
 161                 public void Ctor_IntPtrFileAccessBoolIntBool ()
 162                 {
 163                         new FileStream (IntPtr.Zero, FileAccess.Read, false, 0, false);
 164                 }
 165
 166                 // we use reflection to call FileStream as the Handle property is protected
 167                 // by a LinkDemand (which will be converted into full demand, i.e. a stack
 168                 // walk) when reflection is used (i.e. it gets testable).
 169
 170                 [Test]
 171                 [SecurityPermission (SecurityAction.Deny, UnmanagedCode = true)]
 172                 [ExpectedException (typeof (SecurityException))]
 173                 public void Handle ()
 174                 {
 175                         FileStream fs = File.OpenWrite (Path.GetTempFileName ());
 176                         try {
 177                                 MethodInfo mi = typeof (FileStream).GetProperty ("Handle").GetGetMethod ();
 178                                 mi.Invoke (fs, null);
 179                         }
 180                         finally {
 181                                 fs.Close ();
 182                         }
 183                 }
 184
 185                 // async tests (for stack propagation)
 186
 187                 private void ReadCallback (IAsyncResult ar)
 188                 {
 189                         FileStream s = (FileStream)ar.AsyncState;
 190                         s.EndRead (ar);
 191                         try {
 192                                 // can we do something bad here ?
 193                                 Assert.IsNotNull (Environment.GetEnvironmentVariable ("USERNAME"));
 194                                 message = "Expected a SecurityException";
 195                         }
 196                         catch (SecurityException) {
 197                                 message = null;
 198                                 reset.Set ();
 199                         }
 200                         catch (Exception e) {
 201                                 message = e.ToString ();
 202                         }
 203                 }
 204
 205                 [Test]
 206                 [EnvironmentPermission (SecurityAction.Deny, Read = "USERNAME")]
 207                 public void AsyncRead ()
 208                 {
 209                         FileStream fs = new FileStream (readfile, FileMode.OpenOrCreate);
 210                         message = "AsyncRead";
 211                         reset.Reset ();
 212                         IAsyncResult r = fs.BeginRead (new byte[0], 0, 0, new AsyncCallback (ReadCallback), fs);
 213                         Assert.IsNotNull (r, "IAsyncResult");
 214                         if (!reset.WaitOne (timeout, true))
 215                                 Assert.Ignore ("Timeout");
 216                         Assert.IsNull (message, message);
 217                         fs.Close ();
 218                 }
 219
 220                 private void WriteCallback (IAsyncResult ar)
 221                 {
 222                         FileStream s = (FileStream)ar.AsyncState;
 223                         s.EndWrite (ar);
 224                         try {
 225                                 // can we do something bad here ?
 226                                 Assert.IsNotNull (Environment.GetEnvironmentVariable ("USERNAME"));
 227                                 message = "Expected a SecurityException";
 228                         }
 229                         catch (SecurityException) {
 230                                 message = null;
 231                                 reset.Set ();
 232                         }
 233                         catch (Exception e) {
 234                                 message = e.ToString ();
 235                         }
 236                 }
 237
 238                 [Test]
 239                 [EnvironmentPermission (SecurityAction.Deny, Read = "USERNAME")]
 240                 public void AsyncWrite ()
 241                 {
 242                         FileStream fs = new FileStream (writefile, FileMode.OpenOrCreate);
 243                         message = "AsyncWrite";
 244                         reset.Reset ();
 245                         IAsyncResult r = fs.BeginWrite (new byte[0], 0, 0, new AsyncCallback (WriteCallback), fs);
 246                         Assert.IsNotNull (r, "IAsyncResult");
 247                         if (!reset.WaitOne (timeout, true))
 248                                 Assert.Ignore ("Timeout");
 249                         Assert.IsNull (message, message);
 250                         fs.Close ();
 251                 }
 252         }
 253 }