mcs/class/corlib/System.Reflection/Assembly.cs

   1 //
   2 // System.Reflection/Assembly.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 // Copyright (C) 2004-2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Security;
  31 using System.Security.Policy;
  32 using System.Security.Permissions;
  33 using System.Runtime.Serialization;
  34 using System.Reflection;
  35 using System.Reflection.Emit;
  36 using System.IO;
  37 using System.Globalization;
  38 using System.Runtime.CompilerServices;
  39 using System.Runtime.InteropServices;
  40 using System.Collections;
  41 using System.Collections.Generic;
  42 using System.Configuration.Assemblies;
  43
  44 using Mono.Security;
  45
  46 namespace System.Reflection {
  47
  48 #pragma warning disable 659 // overrides Equals but not GetHashCode
  49
  50         [ComVisible (true)]
  51         [ComDefaultInterfaceAttribute (typeof (_Assembly))]
  52         [Serializable]
  53         [ClassInterface(ClassInterfaceType.None)]
  54 #if NET_2_1
  55         public partial class Assembly : ICustomAttributeProvider, _Assembly {
  56 #elif NET_4_0
  57         public abstract class Assembly : ICustomAttributeProvider, _Assembly, IEvidenceFactory, ISerializable {
  58 #else
  59         public partial class Assembly : ICustomAttributeProvider, _Assembly, IEvidenceFactory, ISerializable {
  60 #endif
  61                 internal class ResolveEventHolder {
  62                         public event ModuleResolveEventHandler ModuleResolve;
  63                 }
  64
  65                 // Note: changes to fields must be reflected in _MonoReflectionAssembly struct (object-internals.h)
  66 #pragma warning disable 649
  67                 private IntPtr _mono_assembly;
  68 #pragma warning restore 649
  69
  70                 private ResolveEventHolder resolve_event_holder;
  71                 private Evidence _evidence;
  72                 internal PermissionSet _minimum;        // for SecurityAction.RequestMinimum
  73                 internal PermissionSet _optional;       // for SecurityAction.RequestOptional
  74                 internal PermissionSet _refuse;         // for SecurityAction.RequestRefuse
  75                 private PermissionSet _granted;         // for the resolved assembly granted permissions
  76                 private PermissionSet _denied;          // for the resolved assembly denied permissions
  77                 private bool fromByteArray;
  78                 private string assemblyName;
  79
  80 #if NET_4_0
  81                 protected
  82 #else
  83                 internal
  84 #endif
  85                 Assembly ()
  86                 {
  87                         resolve_event_holder = new ResolveEventHolder ();
  88                 }
  89
  90                 //
  91                 // We can't store the event directly in this class, since the
  92                 // compiler would silently insert the fields before _mono_assembly
  93                 //
  94                 public event ModuleResolveEventHandler ModuleResolve {
  95                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  96                         add {
  97                                 resolve_event_holder.ModuleResolve += value;
  98                         }
  99                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
 100                         remove {
 101                                 resolve_event_holder.ModuleResolve -= value;
 102                         }
 103                 }
 104
 105                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 106                 private extern string get_code_base (bool escaped);
 107
 108                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 109                 private extern string get_fullname ();
 110
 111                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 112                 private extern string get_location ();
 113
 114                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 115                 private extern string InternalImageRuntimeVersion ();
 116
 117                 // SECURITY: this should be the only caller to icall get_code_base
 118                 private string GetCodeBase (bool escaped)
 119                 {
 120                         string cb = get_code_base (escaped);
 121 #if !NET_2_1
 122                         if (SecurityManager.SecurityEnabled) {
 123                                 // we cannot divulge local file informations
 124                                 if (String.Compare ("FILE://", 0, cb, 0, 7, true, CultureInfo.InvariantCulture) == 0) {
 125                                         string file = cb.Substring (7);
 126                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, file).Demand ();
 127                                 }
 128                         }
 129 #endif
 130                         return cb;
 131                 }
 132
 133                 public virtual string CodeBase {
 134                         get { return GetCodeBase (false); }
 135                 }
 136
 137                 public virtual string EscapedCodeBase {
 138                         get { return GetCodeBase (true); }
 139                 }
 140
 141                 public virtual string FullName {
 142                         get {
 143                                 //
 144                                 // FIXME: This is wrong, but it gets us going
 145                                 // in the compiler for now
 146                                 //
 147                                 return ToString ();
 148                         }
 149                 }
 150
 151                 public virtual extern MethodInfo EntryPoint {
 152                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 153                         get;
 154                 }
 155 #if !MOONLIGHT
 156                 public virtual Evidence Evidence {
 157                         [SecurityPermission (SecurityAction.Demand, ControlEvidence = true)]
 158                         get { return UnprotectedGetEvidence (); }
 159                 }
 160
 161                 // note: the security runtime requires evidences but may be unable to do so...
 162                 internal Evidence UnprotectedGetEvidence ()
 163                 {
 164                         // if the host (runtime) hasn't provided it's own evidence...
 165                         if (_evidence == null) {
 166                                 // ... we will provide our own
 167                                 lock (this) {
 168                                         _evidence = Evidence.GetDefaultHostEvidence (this);
 169                                 }
 170                         }
 171                         return _evidence;
 172                 }
 173
 174                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 175                 internal extern bool get_global_assembly_cache ();
 176
 177 #endif
 178                 internal bool FromByteArray {
 179                         set { fromByteArray = value; }
 180                 }
 181
 182                 public virtual String Location {
 183                         get {
 184                                 if (fromByteArray)
 185                                         return String.Empty;
 186
 187                                 string loc = get_location ();
 188 #if !NET_2_1
 189                                 if ((loc != String.Empty) && SecurityManager.SecurityEnabled) {
 190                                         // we cannot divulge local file informations
 191                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, loc).Demand ();
 192                                 }
 193 #endif
 194                                 return loc;
 195                         }
 196                 }
 197
 198                 [ComVisible (false)]
 199                 public virtual string ImageRuntimeVersion {
 200                         get {
 201                                 return InternalImageRuntimeVersion ();
 202                         }
 203                 }
 204
 205                 [SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
 206                 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
 207                 {
 208                         if (info == null)
 209                                 throw new ArgumentNullException ("info");
 210
 211                         UnitySerializationHolder.GetAssemblyData (this, info, context);
 212                 }
 213
 214                 public virtual bool IsDefined (Type attributeType, bool inherit)
 215                 {
 216                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 217                 }
 218
 219                 public virtual object [] GetCustomAttributes (bool inherit)
 220                 {
 221                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 222                 }
 223
 224                 public virtual object [] GetCustomAttributes (Type attributeType, bool inherit)
 225                 {
 226                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 227                 }
 228
 229                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 230                 private extern object GetFilesInternal (String name, bool getResourceModules);
 231
 232                 public virtual FileStream[] GetFiles ()
 233                 {
 234                         return GetFiles (false);
 235                 }
 236
 237                 public virtual FileStream [] GetFiles (bool getResourceModules)
 238                 {
 239                         string[] names = (string[]) GetFilesInternal (null, getResourceModules);
 240                         if (names == null)
 241                                 return new FileStream [0];
 242
 243                         string location = Location;
 244
 245                         FileStream[] res;
 246                         if (location != String.Empty) {
 247                                 res = new FileStream [names.Length + 1];
 248                                 res [0] = new FileStream (location, FileMode.Open, FileAccess.Read);
 249                                 for (int i = 0; i < names.Length; ++i)
 250                                         res [i + 1] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 251                         } else {
 252                                 res = new FileStream [names.Length];
 253                                 for (int i = 0; i < names.Length; ++i)
 254                                         res [i] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 255                         }
 256                         return res;
 257                 }
 258
 259                 public virtual FileStream GetFile (String name)
 260                 {
 261                         if (name == null)
 262                                 throw new ArgumentNullException (null, "Name cannot be null.");
 263                         if (name.Length == 0)
 264                                 throw new ArgumentException ("Empty name is not valid");
 265
 266                         string filename = (string)GetFilesInternal (name, true);
 267                         if (filename != null)
 268                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 269                         else
 270                                 return null;
 271                 }
 272
 273                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 274                 internal extern IntPtr GetManifestResourceInternal (String name, out int size, out Module module);
 275
 276                 public virtual Stream GetManifestResourceStream (String name)
 277                 {
 278                         if (name == null)
 279                                 throw new ArgumentNullException ("name");
 280                         if (name.Length == 0)
 281                                 throw new ArgumentException ("String cannot have zero length.",
 282                                         "name");
 283
 284                         ManifestResourceInfo info = GetManifestResourceInfo (name);
 285                         if (info == null)
 286                                 return null;
 287
 288                         if (info.ReferencedAssembly != null)
 289                                 return info.ReferencedAssembly.GetManifestResourceStream (name);
 290                         if ((info.FileName != null) && (info.ResourceLocation == 0)) {
 291                                 if (fromByteArray)
 292                                         throw new FileNotFoundException (info.FileName);
 293
 294                                 string location = Path.GetDirectoryName (Location);
 295                                 string filename = Path.Combine (location, info.FileName);
 296 #if MOONLIGHT
 297                                 // we don't control the content of 'info.FileName' so we want to make sure we keep to ourselves
 298                                 filename = Path.GetFullPath (filename);
 299                                 if (!filename.StartsWith (location))
 300                                         throw new SecurityException ("non-rooted access to manifest resource");
 301 #endif
 302                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 303                         }
 304
 305                         int size;
 306                         Module module;
 307                         IntPtr data = GetManifestResourceInternal (name, out size, out module);
 308                         if (data == (IntPtr) 0)
 309                                 return null;
 310                         else {
 311                                 UnmanagedMemoryStream stream;
 312                                 unsafe {
 313                                         stream = new UnmanagedMemoryStream ((byte*) data, size);
 314                                 }
 315                                 /*
 316                                  * The returned pointer points inside metadata, so
 317                                  * we have to increase the refcount of the module, and decrease
 318                                  * it when the stream is finalized.
 319                                  */
 320                                 stream.Closed += new EventHandler (new ResourceCloseHandler (module).OnClose);
 321                                 return stream;
 322                         }
 323                 }
 324
 325                 public virtual Stream GetManifestResourceStream (Type type, String name)
 326                 {
 327                         string ns;
 328                         if (type != null) {
 329                                 ns = type.Namespace;
 330                         } else {
 331                                 if (name == null)
 332                                         throw new ArgumentNullException ("type");
 333                                 ns = null;
 334                         }
 335
 336                         if (ns == null || ns.Length == 0)
 337                                 return GetManifestResourceStream (name);
 338                         else
 339                                 return GetManifestResourceStream (ns + "." + name);
 340                 }
 341
 342                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 343                 internal virtual extern Type[] GetTypes (bool exportedOnly);
 344
 345                 public virtual Type[] GetTypes ()
 346                 {
 347                         return GetTypes (false);
 348                 }
 349
 350                 public virtual Type[] GetExportedTypes ()
 351                 {
 352                         return GetTypes (true);
 353                 }
 354
 355                 public virtual Type GetType (String name, Boolean throwOnError)
 356                 {
 357                         return GetType (name, throwOnError, false);
 358                 }
 359
 360                 public virtual Type GetType (String name) {
 361                         return GetType (name, false, false);
 362                 }
 363
 364                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 365                 internal extern Type InternalGetType (Module module, String name, Boolean throwOnError, Boolean ignoreCase);
 366
 367                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 368                 internal extern static void InternalGetAssemblyName (string assemblyFile, AssemblyName aname);
 369
 370                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 371                 static extern void FillName (Assembly ass, AssemblyName aname);
 372
 373                 [MonoTODO ("copiedName == true is not supported")]
 374                 public virtual AssemblyName GetName (Boolean copiedName)
 375                 {
 376                         // CodeBase, which is restricted, will be copied into the AssemblyName object so...
 377                         if (SecurityManager.SecurityEnabled) {
 378                                 GetCodeBase (true); // this will ensure the Demand is made
 379                         }
 380                         return UnprotectedGetName ();
 381                 }
 382
 383                 public virtual AssemblyName GetName ()
 384                 {
 385                         return GetName (false);
 386                 }
 387
 388                 // the security runtime requires access to the assemblyname (e.g. to get the strongname)
 389                 internal virtual AssemblyName UnprotectedGetName ()
 390                 {
 391                         AssemblyName aname = new AssemblyName ();
 392                         FillName (this, aname);
 393                         return aname;
 394                 }
 395
 396                 public override string ToString ()
 397                 {
 398                         // note: ToString work without requiring CodeBase (so no checks are needed)
 399
 400                         if (assemblyName != null)
 401                                 return assemblyName;
 402
 403                         assemblyName = get_fullname ();
 404                         return assemblyName;
 405                 }
 406
 407                 public static String CreateQualifiedName (String assemblyName, String typeName)
 408                 {
 409                         return typeName + ", " + assemblyName;
 410                 }
 411
 412                 public static Assembly GetAssembly (Type type)
 413                 {
 414                         if (type != null)
 415                                 return type.Assembly;
 416                         throw new ArgumentNullException ("type");
 417                 }
 418
 419
 420                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 421                 public static extern Assembly GetEntryAssembly();
 422
 423                 internal Assembly GetSatelliteAssemblyNoThrow (CultureInfo culture, Version version)
 424                 {
 425                         return GetSatelliteAssembly (culture, version, false);
 426                 }
 427
 428                 internal Assembly GetSatelliteAssembly (CultureInfo culture, Version version, bool throwOnError)
 429                 {
 430                         if (culture == null)
 431                                 throw new ArgumentException ("culture");
 432
 433                         AssemblyName aname = GetName (true);
 434                         if (version != null)
 435                                 aname.Version = version;
 436
 437                         aname.CultureInfo = culture;
 438                         aname.Name = aname.Name + ".resources";
 439                         Assembly assembly;
 440
 441                         try {
 442                                 assembly = AppDomain.CurrentDomain.LoadSatellite (aname, false);
 443                                 if (assembly != null)
 444                                         return assembly;
 445                         } catch (FileNotFoundException) {
 446                                 assembly = null;
 447                                 // ignore
 448                         }
 449
 450                         // Try the assembly directory
 451                         string location = Path.GetDirectoryName (Location);
 452                         string fullName = Path.Combine (location, Path.Combine (culture.Name, aname.Name + ".dll"));
 453 #if MOONLIGHT
 454                         // it's unlikely that culture.Name or aname.Name could contain stuff like ".." but...
 455                         fullName = Path.GetFullPath (fullName);
 456                         if (!fullName.StartsWith (location)) {
 457                                 if (throwOnError)
 458                                         throw new SecurityException ("non-rooted access to satellite assembly");
 459                                 return null;
 460                         }
 461 #endif
 462                         if (!throwOnError && !File.Exists (fullName))
 463                                 return null;
 464
 465                         return LoadFrom (fullName);
 466                 }
 467
 468                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 469                 private extern static Assembly LoadFrom (String assemblyFile, bool refonly);
 470
 471                 public static Assembly LoadFrom (String assemblyFile)
 472                 {
 473                         return LoadFrom (assemblyFile, false);
 474                 }
 475
 476                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence)
 477                 {
 478                         Assembly a = LoadFrom (assemblyFile, false);
 479 #if !NET_2_1
 480                         if ((a != null) && (securityEvidence != null)) {
 481                                 // merge evidence (i.e. replace defaults with provided evidences)
 482                                 a.Evidence.Merge (securityEvidence);
 483                         }
 484 #endif
 485                         return a;
 486                 }
 487
 488                 [MonoTODO("This overload is not currently implemented")]
 489                 // FIXME: What are we missing?
 490                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence, byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm)
 491                 {
 492                         if (assemblyFile == null)
 493                                 throw new ArgumentNullException ("assemblyFile");
 494                         if (assemblyFile == String.Empty)
 495                                 throw new ArgumentException ("Name can't be the empty string", "assemblyFile");
 496                         throw new NotImplementedException ();
 497                 }
 498
 499                 public static Assembly LoadFile (String path, Evidence securityEvidence)
 500                 {
 501                         if (path == null)
 502                                 throw new ArgumentNullException ("path");
 503                         if (path == String.Empty)
 504                                 throw new ArgumentException ("Path can't be empty", "path");
 505                         // FIXME: Make this do the right thing
 506                         return LoadFrom (path, securityEvidence);
 507                 }
 508
 509                 public static Assembly LoadFile (String path)
 510                 {
 511                         return LoadFile (path, null);
 512                 }
 513
 514                 public static Assembly Load (String assemblyString)
 515                 {
 516                         return AppDomain.CurrentDomain.Load (assemblyString);
 517                 }
 518
 519                 public static Assembly Load (String assemblyString, Evidence assemblySecurity)
 520                 {
 521                         return AppDomain.CurrentDomain.Load (assemblyString, assemblySecurity);
 522                 }
 523
 524                 public static Assembly Load (AssemblyName assemblyRef)
 525                 {
 526                         return AppDomain.CurrentDomain.Load (assemblyRef);
 527                 }
 528
 529                 public static Assembly Load (AssemblyName assemblyRef, Evidence assemblySecurity)
 530                 {
 531                         return AppDomain.CurrentDomain.Load (assemblyRef, assemblySecurity);
 532                 }
 533
 534                 public static Assembly Load (Byte[] rawAssembly)
 535                 {
 536                         return AppDomain.CurrentDomain.Load (rawAssembly);
 537                 }
 538
 539                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore)
 540                 {
 541                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore);
 542                 }
 543
 544                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore,
 545                                              Evidence securityEvidence)
 546                 {
 547                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore, securityEvidence);
 548                 }
 549
 550                 public static Assembly ReflectionOnlyLoad (byte[] rawAssembly)
 551                 {
 552                         return AppDomain.CurrentDomain.Load (rawAssembly, null, null, true);
 553                 }
 554
 555                 public static Assembly ReflectionOnlyLoad (string assemblyString)
 556                 {
 557                         return AppDomain.CurrentDomain.Load (assemblyString, null, true);
 558                 }
 559
 560                 public static Assembly ReflectionOnlyLoadFrom (string assemblyFile)
 561                 {
 562                         if (assemblyFile == null)
 563                                 throw new ArgumentNullException ("assemblyFile");
 564
 565                         return LoadFrom (assemblyFile, true);
 566                 }
 567
 568                 public static Assembly LoadWithPartialName (string partialName)
 569                 {
 570                         return LoadWithPartialName (partialName, null);
 571                 }
 572
 573                 [MonoTODO ("Not implemented")]
 574                 public Module LoadModule (string moduleName, byte [] rawModule)
 575                 {
 576                         throw new NotImplementedException ();
 577                 }
 578
 579                 [MonoTODO ("Not implemented")]
 580                 public
 581 #if NET_4_0
 582                 virtual
 583 #endif
 584                 Module LoadModule (string moduleName, byte [] rawModule, byte [] rawSymbolStore)
 585                 {
 586                         throw new NotImplementedException ();
 587                 }
 588
 589                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 590                 private static extern Assembly load_with_partial_name (string name, Evidence e);
 591
 592                 public static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence)
 593                 {
 594                         return LoadWithPartialName (partialName, securityEvidence, true);
 595                 }
 596
 597                 /**
 598                  * LAMESPEC: It is possible for this method to throw exceptions IF the name supplied
 599                  * is a valid gac name and contains filesystem entry charachters at the end of the name
 600                  * ie System/// will throw an exception. However ////System will not as that is canocolized
 601                  * out of the name.
 602                  */
 603
 604                 // FIXME: LoadWithPartialName must look cache (no CAS) or read from disk (CAS)
 605                 internal static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence, bool oldBehavior)
 606                 {
 607                         if (!oldBehavior)
 608                                 throw new NotImplementedException ();
 609
 610                         if (partialName == null)
 611                                 throw new NullReferenceException ();
 612
 613                         return load_with_partial_name (partialName, securityEvidence);
 614                 }
 615
 616                 public Object CreateInstance (String typeName)
 617                 {
 618                         return CreateInstance (typeName, false);
 619                 }
 620
 621                 public Object CreateInstance (String typeName, Boolean ignoreCase)
 622                 {
 623                         Type t = GetType (typeName, false, ignoreCase);
 624                         if (t == null)
 625                                 return null;
 626
 627                         try {
 628                                 return Activator.CreateInstance (t);
 629                         } catch (InvalidOperationException) {
 630                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 631                         }
 632                 }
 633
 634                 public
 635 #if NET_4_0
 636                 virtual
 637 #endif
 638                 Object CreateInstance (String typeName, Boolean ignoreCase,
 639                                               BindingFlags bindingAttr, Binder binder,
 640                                               Object[] args, CultureInfo culture,
 641                                               Object[] activationAttributes)
 642                 {
 643                         Type t = GetType (typeName, false, ignoreCase);
 644                         if (t == null)
 645                                 return null;
 646
 647                         try {
 648                                 return Activator.CreateInstance (t, bindingAttr, binder, args, culture, activationAttributes);
 649                         } catch (InvalidOperationException) {
 650                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 651                         }
 652                 }
 653
 654                 public Module[] GetLoadedModules ()
 655                 {
 656                         return GetLoadedModules (false);
 657                 }
 658
 659                 public Module[] GetModules ()
 660                 {
 661                         return GetModules (false);
 662                 }
 663
 664                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 665                 internal virtual extern Module[] GetModulesInternal ();
 666
 667
 668                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 669                 internal extern string[] GetNamespaces ();
 670
 671                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 672                 public extern virtual String[] GetManifestResourceNames ();
 673
 674                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 675                 public extern static Assembly GetExecutingAssembly ();
 676
 677                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 678                 public extern static Assembly GetCallingAssembly ();
 679
 680                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 681                 internal static extern AssemblyName[] GetReferencedAssemblies (Assembly module);
 682
 683                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 684                 private extern bool GetManifestResourceInfoInternal (String name, ManifestResourceInfo info);
 685
 686                 public virtual ManifestResourceInfo GetManifestResourceInfo (String resourceName)
 687                 {
 688                         if (resourceName == null)
 689                                 throw new ArgumentNullException ("resourceName");
 690                         if (resourceName.Length == 0)
 691                                 throw new ArgumentException ("String cannot have zero length.");
 692                         ManifestResourceInfo result = new ManifestResourceInfo ();
 693                         bool found = GetManifestResourceInfoInternal (resourceName, result);
 694                         if (found)
 695                                 return result;
 696                         else
 697                                 return null;
 698                 }
 699
 700                 private class ResourceCloseHandler {
 701 #pragma warning disable 169, 414
 702                         Module module;
 703 #pragma warning restore 169, 414
 704
 705                         public ResourceCloseHandler (Module module) {
 706                                 this.module = module;
 707                         }
 708
 709                         public void OnClose (object sender, EventArgs e) {
 710                                 // The module dtor will take care of things
 711                                 module = null;
 712                         }
 713                 }
 714
 715                 //
 716                 // The following functions are only for the Mono Debugger.
 717                 //
 718
 719                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 720                 internal static extern int MonoDebugger_GetMethodToken (MethodBase method);
 721
 722                 [MonoTODO ("Currently it always returns zero")]
 723                 [ComVisible (false)]
 724                 public
 725 #if NET_4_0
 726                 virtual
 727 #endif
 728                 long HostContext {
 729                         get { return 0; }
 730                 }
 731
 732
 733                 internal virtual Module GetManifestModule () {
 734                         return GetManifestModuleInternal ();
 735                 }
 736
 737                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 738                 internal extern Module GetManifestModuleInternal ();
 739
 740                 [ComVisible (false)]
 741                 public virtual extern bool ReflectionOnly {
 742                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 743                         get;
 744                 }
 745
 746                 public override bool Equals (object o)
 747                 {
 748                         if (((object) this) == o)
 749                                 return true;
 750
 751                         if (o == null)
 752                                 return false;
 753
 754                         Assembly other = (Assembly) o;
 755                         return other._mono_assembly == _mono_assembly;
 756                 }
 757
 758 #if NET_4_0
 759                 public virtual IList<CustomAttributeData> GetCustomAttributesData () {
 760                         return CustomAttributeData.GetCustomAttributes (this);
 761                 }
 762 #endif
 763
 764 #if !MOONLIGHT
 765                 // Code Access Security
 766
 767                 internal void Resolve ()
 768                 {
 769                         lock (this) {
 770                                 // FIXME: As we (currently) delay the resolution until the first CAS
 771                                 // Demand it's too late to evaluate the Minimum permission set as a
 772                                 // condition to load the assembly into the AppDomain
 773                                 LoadAssemblyPermissions ();
 774                                 Evidence e = new Evidence (UnprotectedGetEvidence ()); // we need a copy to add PRE
 775                                 e.AddHost (new PermissionRequestEvidence (_minimum, _optional, _refuse));
 776                                 _granted = SecurityManager.ResolvePolicy (e,
 777                                         _minimum, _optional, _refuse, out _denied);
 778                         }
 779                 }
 780
 781                 internal PermissionSet GrantedPermissionSet {
 782                         get {
 783                                 if (_granted == null) {
 784                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 785                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 786                                                         return DefaultPolicies.FullTrust;
 787                                                 else
 788                                                         return null; // we can't resolve during resolution
 789                                         }
 790                                         Resolve ();
 791                                 }
 792                                 return _granted;
 793                         }
 794                 }
 795
 796                 internal PermissionSet DeniedPermissionSet {
 797                         get {
 798                                 // yes we look for granted, as denied may be null
 799                                 if (_granted == null) {
 800                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 801                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 802                                                         return null;
 803                                                 else
 804                                                         return DefaultPolicies.FullTrust; // deny unrestricted
 805                                         }
 806                                         Resolve ();
 807                                 }
 808                                 return _denied;
 809                         }
 810                 }
 811
 812                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 813                 extern internal static bool LoadPermissions (Assembly a,
 814                         ref IntPtr minimum, ref int minLength,
 815                         ref IntPtr optional, ref int optLength,
 816                         ref IntPtr refused, ref int refLength);
 817
 818                 // Support for SecurityAction.RequestMinimum, RequestOptional and RequestRefuse
 819                 private void LoadAssemblyPermissions ()
 820                 {
 821                         IntPtr minimum = IntPtr.Zero, optional = IntPtr.Zero, refused = IntPtr.Zero;
 822                         int minLength = 0, optLength = 0, refLength = 0;
 823                         if (LoadPermissions (this, ref minimum, ref minLength, ref optional,
 824                                 ref optLength, ref refused, ref refLength)) {
 825
 826                                 // Note: no need to cache these permission sets as they will only be created once
 827                                 // at assembly resolution time.
 828                                 if (minLength > 0) {
 829                                         byte[] data = new byte [minLength];
 830                                         Marshal.Copy (minimum, data, 0, minLength);
 831                                         _minimum = SecurityManager.Decode (data);
 832                                 }
 833                                 if (optLength > 0) {
 834                                         byte[] data = new byte [optLength];
 835                                         Marshal.Copy (optional, data, 0, optLength);
 836                                         _optional = SecurityManager.Decode (data);
 837                                 }
 838                                 if (refLength > 0) {
 839                                         byte[] data = new byte [refLength];
 840                                         Marshal.Copy (refused, data, 0, refLength);
 841                                         _refuse = SecurityManager.Decode (data);
 842                                 }
 843                         }
 844                 }
 845 #endif
 846
 847 #if NET_4_0
 848                 static Exception CreateNIE ()
 849                 {
 850                         return new NotSupportedException ("Derived classes must implement it");
 851                 }
 852
 853                 public virtual Type GetType (string name, bool throwOnError, bool ignoreCase)
 854                 {
 855                         throw CreateNIE ();
 856                 }
 857
 858                 public virtual Module GetModule (String name)
 859                 {
 860                         throw CreateNIE ();
 861                 }
 862
 863                 public virtual AssemblyName[] GetReferencedAssemblies ()
 864                 {
 865                         throw CreateNIE ();
 866                 }
 867
 868                 public virtual Module[] GetModules (bool getResourceModules)
 869                 {
 870                         throw CreateNIE ();
 871                 }
 872
 873                 public virtual Module[] GetLoadedModules (bool getResourceModules)
 874                 {
 875                         throw CreateNIE ();
 876                 }
 877
 878                 public virtual Assembly GetSatelliteAssembly (CultureInfo culture)
 879                 {
 880                         throw CreateNIE ();
 881                 }
 882
 883                 public virtual Assembly GetSatelliteAssembly (CultureInfo culture, Version version)
 884                 {
 885                         throw CreateNIE ();
 886                 }
 887
 888                 public virtual Module ManifestModule {
 889                         get { throw CreateNIE (); }
 890                 }
 891
 892                 public virtual bool GlobalAssemblyCache {
 893                         get { throw CreateNIE (); }
 894                 }
 895 #endif
 896         }
 897 }
 898
 899 #pragma warning restore 659