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 // Copyright 2011 Xamarin Inc (http://www.xamarin.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
  31 using System.Security;
  32 using System.Security.Policy;
  33 using System.Security.Permissions;
  34 using System.Runtime.Serialization;
  35 using System.Reflection;
  36 using System.IO;
  37 using System.Globalization;
  38 using System.Runtime.CompilerServices;
  39 using System.Runtime.InteropServices;
  40 using System.Collections.Generic;
  41 using System.Configuration.Assemblies;
  42
  43 using Mono.Security;
  44
  45 namespace System.Reflection {
  46
  47         [ComVisible (true)]
  48         [ComDefaultInterfaceAttribute (typeof (_Assembly))]
  49         [Serializable]
  50         [ClassInterface(ClassInterfaceType.None)]
  51         [StructLayout (LayoutKind.Sequential)]
  52 #if MOBILE
  53         public partial class Assembly : ICustomAttributeProvider {
  54 #elif NET_4_0
  55         public abstract class Assembly : ICustomAttributeProvider, _Assembly, IEvidenceFactory, ISerializable {
  56 #else
  57         public partial class Assembly : ICustomAttributeProvider, _Assembly, IEvidenceFactory, ISerializable {
  58 #endif
  59                 internal class ResolveEventHolder {
  60                         public event ModuleResolveEventHandler ModuleResolve;
  61                 }
  62
  63                 // Note: changes to fields must be reflected in _MonoReflectionAssembly struct (object-internals.h)
  64 #pragma warning disable 649
  65                 private IntPtr _mono_assembly;
  66 #pragma warning restore 649
  67
  68                 private ResolveEventHolder resolve_event_holder;
  69 #if !MOBILE
  70                 private Evidence _evidence;
  71                 internal PermissionSet _minimum;        // for SecurityAction.RequestMinimum
  72                 internal PermissionSet _optional;       // for SecurityAction.RequestOptional
  73                 internal PermissionSet _refuse;         // for SecurityAction.RequestRefuse
  74                 private PermissionSet _granted;         // for the resolved assembly granted permissions
  75                 private PermissionSet _denied;          // for the resolved assembly denied permissions
  76 #else
  77                 object _evidence, _minimum, _optional, _refuse, _granted, _denied;
  78 #endif
  79                 private bool fromByteArray;
  80                 private string assemblyName;
  81
  82 #if NET_4_0
  83                 protected
  84 #else
  85                 internal
  86 #endif
  87                 Assembly ()
  88                 {
  89                         resolve_event_holder = new ResolveEventHolder ();
  90                 }
  91
  92                 //
  93                 // We can't store the event directly in this class, since the
  94                 // compiler would silently insert the fields before _mono_assembly
  95                 //
  96                 public event ModuleResolveEventHandler ModuleResolve {
  97                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  98                         add {
  99                                 resolve_event_holder.ModuleResolve += value;
 100                         }
 101                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
 102                         remove {
 103                                 resolve_event_holder.ModuleResolve -= value;
 104                         }
 105                 }
 106
 107                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 108                 private extern string get_code_base (bool escaped);
 109
 110                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 111                 private extern string get_fullname ();
 112
 113                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 114                 private extern string get_location ();
 115
 116                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 117                 private extern string InternalImageRuntimeVersion ();
 118
 119                 // SECURITY: this should be the only caller to icall get_code_base
 120                 private string GetCodeBase (bool escaped)
 121                 {
 122                         string cb = get_code_base (escaped);
 123 #if !NET_2_1
 124                         if (SecurityManager.SecurityEnabled) {
 125                                 // we cannot divulge local file informations
 126                                 if (String.Compare ("FILE://", 0, cb, 0, 7, true, CultureInfo.InvariantCulture) == 0) {
 127                                         string file = cb.Substring (7);
 128                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, file).Demand ();
 129                                 }
 130                         }
 131 #endif
 132                         return cb;
 133                 }
 134
 135                 public virtual string CodeBase {
 136                         get { return GetCodeBase (false); }
 137                 }
 138
 139                 public virtual string EscapedCodeBase {
 140                         get { return GetCodeBase (true); }
 141                 }
 142
 143                 public virtual string FullName {
 144                         get {
 145                                 //
 146                                 // FIXME: This is wrong, but it gets us going
 147                                 // in the compiler for now
 148                                 //
 149                                 return ToString ();
 150                         }
 151                 }
 152
 153                 public virtual extern MethodInfo EntryPoint {
 154                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 155                         get;
 156                 }
 157
 158                 public virtual Evidence Evidence {
 159                         [SecurityPermission (SecurityAction.Demand, ControlEvidence = true)]
 160                         get { return UnprotectedGetEvidence (); }
 161                 }
 162
 163                 // note: the security runtime requires evidences but may be unable to do so...
 164                 internal Evidence UnprotectedGetEvidence ()
 165                 {
 166 #if MOBILE
 167                         return null;
 168 #else
 169                         // if the host (runtime) hasn't provided it's own evidence...
 170                         if (_evidence == null) {
 171                                 // ... we will provide our own
 172                                 lock (this) {
 173                                         _evidence = Evidence.GetDefaultHostEvidence (this);
 174                                 }
 175                         }
 176                         return _evidence;
 177 #endif
 178                 }
 179
 180                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 181                 internal extern bool get_global_assembly_cache ();
 182
 183                 internal bool FromByteArray {
 184                         set { fromByteArray = value; }
 185                 }
 186
 187                 public virtual String Location {
 188                         get {
 189                                 if (fromByteArray)
 190                                         return String.Empty;
 191
 192                                 string loc = get_location ();
 193 #if !NET_2_1
 194                                 if ((loc != String.Empty) && SecurityManager.SecurityEnabled) {
 195                                         // we cannot divulge local file informations
 196                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, loc).Demand ();
 197                                 }
 198 #endif
 199                                 return loc;
 200                         }
 201                 }
 202
 203                 [ComVisible (false)]
 204                 public virtual string ImageRuntimeVersion {
 205                         get {
 206                                 return InternalImageRuntimeVersion ();
 207                         }
 208                 }
 209
 210                 [SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
 211                 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
 212                 {
 213                         if (info == null)
 214                                 throw new ArgumentNullException ("info");
 215
 216                         UnitySerializationHolder.GetAssemblyData (this, info, context);
 217                 }
 218
 219                 public virtual bool IsDefined (Type attributeType, bool inherit)
 220                 {
 221                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 222                 }
 223
 224                 public virtual object [] GetCustomAttributes (bool inherit)
 225                 {
 226                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 227                 }
 228
 229                 public virtual object [] GetCustomAttributes (Type attributeType, bool inherit)
 230                 {
 231                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 232                 }
 233
 234                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 235                 private extern object GetFilesInternal (String name, bool getResourceModules);
 236
 237                 public virtual FileStream[] GetFiles ()
 238                 {
 239                         return GetFiles (false);
 240                 }
 241
 242                 public virtual FileStream [] GetFiles (bool getResourceModules)
 243                 {
 244                         string[] names = (string[]) GetFilesInternal (null, getResourceModules);
 245                         if (names == null)
 246                                 return EmptyArray<FileStream>.Value;
 247
 248                         string location = Location;
 249
 250                         FileStream[] res;
 251                         if (location != String.Empty) {
 252                                 res = new FileStream [names.Length + 1];
 253                                 res [0] = new FileStream (location, FileMode.Open, FileAccess.Read);
 254                                 for (int i = 0; i < names.Length; ++i)
 255                                         res [i + 1] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 256                         } else {
 257                                 res = new FileStream [names.Length];
 258                                 for (int i = 0; i < names.Length; ++i)
 259                                         res [i] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 260                         }
 261                         return res;
 262                 }
 263
 264                 public virtual FileStream GetFile (String name)
 265                 {
 266                         if (name == null)
 267                                 throw new ArgumentNullException (null, "Name cannot be null.");
 268                         if (name.Length == 0)
 269                                 throw new ArgumentException ("Empty name is not valid");
 270
 271                         string filename = (string)GetFilesInternal (name, true);
 272                         if (filename != null)
 273                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 274                         else
 275                                 return null;
 276                 }
 277
 278                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 279                 internal extern IntPtr GetManifestResourceInternal (String name, out int size, out Module module);
 280
 281                 public virtual Stream GetManifestResourceStream (String name)
 282                 {
 283                         if (name == null)
 284                                 throw new ArgumentNullException ("name");
 285                         if (name.Length == 0)
 286                                 throw new ArgumentException ("String cannot have zero length.",
 287                                         "name");
 288
 289                         ManifestResourceInfo info = GetManifestResourceInfo (name);
 290                         if (info == null) {
 291                                 Assembly a = AppDomain.CurrentDomain.DoResourceResolve (name, this);
 292                                 if (a != null && a != this)
 293                                         return a.GetManifestResourceStream (name);
 294                                 else
 295                                         return null;
 296                         }
 297
 298                         if (info.ReferencedAssembly != null)
 299                                 return info.ReferencedAssembly.GetManifestResourceStream (name);
 300                         if ((info.FileName != null) && (info.ResourceLocation == 0)) {
 301                                 if (fromByteArray)
 302                                         throw new FileNotFoundException (info.FileName);
 303
 304                                 string location = Path.GetDirectoryName (Location);
 305                                 string filename = Path.Combine (location, info.FileName);
 306                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 307                         }
 308
 309                         int size;
 310                         Module module;
 311                         IntPtr data = GetManifestResourceInternal (name, out size, out module);
 312                         if (data == (IntPtr) 0)
 313                                 return null;
 314                         else {
 315                                 UnmanagedMemoryStream stream;
 316                                 unsafe {
 317                                         stream = new UnmanagedMemoryStream ((byte*) data, size);
 318                                 }
 319                                 /*
 320                                  * The returned pointer points inside metadata, so
 321                                  * we have to increase the refcount of the module, and decrease
 322                                  * it when the stream is finalized.
 323                                  */
 324                                 stream.Closed += new EventHandler (new ResourceCloseHandler (module).OnClose);
 325                                 return stream;
 326                         }
 327                 }
 328
 329                 public virtual Stream GetManifestResourceStream (Type type, String name)
 330                 {
 331                         string ns;
 332                         if (type != null) {
 333                                 ns = type.Namespace;
 334                         } else {
 335                                 if (name == null)
 336                                         throw new ArgumentNullException ("type");
 337                                 ns = null;
 338                         }
 339
 340                         if (ns == null || ns.Length == 0)
 341                                 return GetManifestResourceStream (name);
 342                         else
 343                                 return GetManifestResourceStream (ns + "." + name);
 344                 }
 345
 346                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 347                 internal virtual extern Type[] GetTypes (bool exportedOnly);
 348
 349                 public virtual Type[] GetTypes ()
 350                 {
 351                         return GetTypes (false);
 352                 }
 353
 354                 public virtual Type[] GetExportedTypes ()
 355                 {
 356                         return GetTypes (true);
 357                 }
 358
 359                 public virtual Type GetType (String name, Boolean throwOnError)
 360                 {
 361                         return GetType (name, throwOnError, false);
 362                 }
 363
 364                 public virtual Type GetType (String name) {
 365                         return GetType (name, false, false);
 366                 }
 367
 368                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 369                 internal extern Type InternalGetType (Module module, String name, Boolean throwOnError, Boolean ignoreCase);
 370
 371                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 372                 internal extern static void InternalGetAssemblyName (string assemblyFile, AssemblyName aname);
 373
 374                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 375                 static extern void FillName (Assembly ass, AssemblyName aname);
 376
 377                 [MonoTODO ("copiedName == true is not supported")]
 378                 public virtual AssemblyName GetName (Boolean copiedName)
 379                 {
 380 #if !MOBILE
 381                         // CodeBase, which is restricted, will be copied into the AssemblyName object so...
 382                         if (SecurityManager.SecurityEnabled) {
 383                                 GetCodeBase (true); // this will ensure the Demand is made
 384                         }
 385 #endif
 386                         return UnprotectedGetName ();
 387                 }
 388
 389                 public virtual AssemblyName GetName ()
 390                 {
 391                         return GetName (false);
 392                 }
 393
 394                 // the security runtime requires access to the assemblyname (e.g. to get the strongname)
 395                 internal virtual AssemblyName UnprotectedGetName ()
 396                 {
 397                         AssemblyName aname = new AssemblyName ();
 398                         FillName (this, aname);
 399                         return aname;
 400                 }
 401
 402                 public override string ToString ()
 403                 {
 404                         // note: ToString work without requiring CodeBase (so no checks are needed)
 405
 406                         if (assemblyName != null)
 407                                 return assemblyName;
 408
 409                         assemblyName = get_fullname ();
 410                         return assemblyName;
 411                 }
 412
 413                 public static String CreateQualifiedName (String assemblyName, String typeName)
 414                 {
 415                         return typeName + ", " + assemblyName;
 416                 }
 417
 418                 public static Assembly GetAssembly (Type type)
 419                 {
 420                         if (type != null)
 421                                 return type.Assembly;
 422                         throw new ArgumentNullException ("type");
 423                 }
 424
 425
 426                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 427                 public static extern Assembly GetEntryAssembly();
 428
 429                 internal Assembly GetSatelliteAssemblyNoThrow (CultureInfo culture, Version version)
 430                 {
 431                         return GetSatelliteAssembly (culture, version, false);
 432                 }
 433
 434                 internal Assembly GetSatelliteAssembly (CultureInfo culture, Version version, bool throwOnError)
 435                 {
 436                         if (culture == null)
 437                                 throw new ArgumentException ("culture");
 438
 439                         AssemblyName aname = GetName (true);
 440                         if (version != null)
 441                                 aname.Version = version;
 442
 443                         aname.CultureInfo = culture;
 444                         aname.Name = aname.Name + ".resources";
 445                         Assembly assembly;
 446
 447                         try {
 448                                 assembly = AppDomain.CurrentDomain.LoadSatellite (aname, false);
 449                                 if (assembly != null)
 450                                         return assembly;
 451                         } catch (FileNotFoundException) {
 452                                 assembly = null;
 453                                 // ignore
 454                         }
 455
 456                         // Try the assembly directory
 457                         string location = Path.GetDirectoryName (Location);
 458                         string fullName = Path.Combine (location, Path.Combine (culture.Name, aname.Name + ".dll"));
 459                         if (!throwOnError && !File.Exists (fullName))
 460                                 return null;
 461
 462                         return LoadFrom (fullName);
 463                 }
 464
 465 #if !MOBILE
 466                 Type _Assembly.GetType ()
 467                 {
 468                         // Required or object::GetType becomes virtual final
 469                         return base.GetType ();
 470                 }
 471 #endif
 472
 473                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 474                 private extern static Assembly LoadFrom (String assemblyFile, bool refonly);
 475
 476                 public static Assembly LoadFrom (String assemblyFile)
 477                 {
 478                         return LoadFrom (assemblyFile, false);
 479                 }
 480
 481 #if NET_4_0
 482                 [Obsolete]
 483 #endif
 484                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence)
 485                 {
 486                         Assembly a = LoadFrom (assemblyFile, false);
 487 #if !NET_2_1
 488                         if ((a != null) && (securityEvidence != null)) {
 489                                 // merge evidence (i.e. replace defaults with provided evidences)
 490                                 a.Evidence.Merge (securityEvidence);
 491                         }
 492 #endif
 493                         return a;
 494                 }
 495
 496 #if NET_4_0
 497                 [Obsolete]
 498 #endif
 499                 [MonoTODO("This overload is not currently implemented")]
 500                 // FIXME: What are we missing?
 501                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence, byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm)
 502                 {
 503                         throw new NotImplementedException ();
 504                 }
 505
 506 #if NET_4_0
 507                 [MonoTODO]
 508                 public static Assembly LoadFrom (String assemblyFile, byte [] hashValue, AssemblyHashAlgorithm hashAlgorithm)
 509                 {
 510                         throw new NotImplementedException ();
 511                 }
 512 #endif
 513
 514 #if NET_4_0
 515                 public static Assembly UnsafeLoadFrom (String assemblyFile)
 516                 {
 517                         return LoadFrom (assemblyFile);
 518                 }
 519 #endif
 520
 521 #if NET_4_0
 522                 [Obsolete]
 523 #endif
 524                 public static Assembly LoadFile (String path, Evidence securityEvidence)
 525                 {
 526                         if (path == null)
 527                                 throw new ArgumentNullException ("path");
 528                         if (path == String.Empty)
 529                                 throw new ArgumentException ("Path can't be empty", "path");
 530                         // FIXME: Make this do the right thing
 531                         return LoadFrom (path, securityEvidence);
 532                 }
 533
 534                 public static Assembly LoadFile (String path)
 535                 {
 536                         return LoadFile (path, null);
 537                 }
 538
 539                 public static Assembly Load (String assemblyString)
 540                 {
 541                         return AppDomain.CurrentDomain.Load (assemblyString);
 542                 }
 543
 544 #if NET_4_0
 545                 [Obsolete]
 546 #endif
 547                 public static Assembly Load (String assemblyString, Evidence assemblySecurity)
 548                 {
 549                         return AppDomain.CurrentDomain.Load (assemblyString, assemblySecurity);
 550                 }
 551
 552                 public static Assembly Load (AssemblyName assemblyRef)
 553                 {
 554                         return AppDomain.CurrentDomain.Load (assemblyRef);
 555                 }
 556
 557 #if NET_4_0
 558                 [Obsolete]
 559 #endif
 560                 public static Assembly Load (AssemblyName assemblyRef, Evidence assemblySecurity)
 561                 {
 562                         return AppDomain.CurrentDomain.Load (assemblyRef, assemblySecurity);
 563                 }
 564
 565                 public static Assembly Load (Byte[] rawAssembly)
 566                 {
 567                         return AppDomain.CurrentDomain.Load (rawAssembly);
 568                 }
 569
 570                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore)
 571                 {
 572                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore);
 573                 }
 574
 575 #if NET_4_0
 576                 [Obsolete]
 577 #endif
 578                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore,
 579                                              Evidence securityEvidence)
 580                 {
 581                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore, securityEvidence);
 582                 }
 583
 584 #if NET_4_0
 585                 [MonoLimitation ("Argument securityContextSource is ignored")]
 586                 public static Assembly Load (byte [] rawAssembly, byte [] rawSymbolStore, SecurityContextSource securityContextSource)
 587                 {
 588                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore);
 589                 }
 590 #endif
 591
 592                 public static Assembly ReflectionOnlyLoad (byte[] rawAssembly)
 593                 {
 594                         return AppDomain.CurrentDomain.Load (rawAssembly, null, null, true);
 595                 }
 596
 597                 public static Assembly ReflectionOnlyLoad (string assemblyString)
 598                 {
 599                         return AppDomain.CurrentDomain.Load (assemblyString, null, true);
 600                 }
 601
 602                 public static Assembly ReflectionOnlyLoadFrom (string assemblyFile)
 603                 {
 604                         if (assemblyFile == null)
 605                                 throw new ArgumentNullException ("assemblyFile");
 606
 607                         return LoadFrom (assemblyFile, true);
 608                 }
 609
 610                 [Obsolete]
 611                 public static Assembly LoadWithPartialName (string partialName)
 612                 {
 613                         return LoadWithPartialName (partialName, null);
 614                 }
 615
 616                 [MonoTODO ("Not implemented")]
 617                 public Module LoadModule (string moduleName, byte [] rawModule)
 618                 {
 619                         throw new NotImplementedException ();
 620                 }
 621
 622                 [MonoTODO ("Not implemented")]
 623                 public
 624 #if NET_4_0
 625                 virtual
 626 #endif
 627                 Module LoadModule (string moduleName, byte [] rawModule, byte [] rawSymbolStore)
 628                 {
 629                         throw new NotImplementedException ();
 630                 }
 631
 632                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 633                 private static extern Assembly load_with_partial_name (string name, Evidence e);
 634
 635                 [Obsolete]
 636                 public static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence)
 637                 {
 638                         return LoadWithPartialName (partialName, securityEvidence, true);
 639                 }
 640
 641                 /**
 642                  * LAMESPEC: It is possible for this method to throw exceptions IF the name supplied
 643                  * is a valid gac name and contains filesystem entry charachters at the end of the name
 644                  * ie System/// will throw an exception. However ////System will not as that is canocolized
 645                  * out of the name.
 646                  */
 647
 648                 // FIXME: LoadWithPartialName must look cache (no CAS) or read from disk (CAS)
 649                 internal static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence, bool oldBehavior)
 650                 {
 651                         if (!oldBehavior)
 652                                 throw new NotImplementedException ();
 653
 654                         if (partialName == null)
 655                                 throw new NullReferenceException ();
 656
 657                         return load_with_partial_name (partialName, securityEvidence);
 658                 }
 659
 660                 public Object CreateInstance (String typeName)
 661                 {
 662                         return CreateInstance (typeName, false);
 663                 }
 664
 665                 public Object CreateInstance (String typeName, Boolean ignoreCase)
 666                 {
 667                         Type t = GetType (typeName, false, ignoreCase);
 668                         if (t == null)
 669                                 return null;
 670
 671                         try {
 672                                 return Activator.CreateInstance (t);
 673                         } catch (InvalidOperationException) {
 674                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 675                         }
 676                 }
 677
 678                 public
 679 #if NET_4_0
 680                 virtual
 681 #endif
 682                 Object CreateInstance (String typeName, Boolean ignoreCase,
 683                                               BindingFlags bindingAttr, Binder binder,
 684                                               Object[] args, CultureInfo culture,
 685                                               Object[] activationAttributes)
 686                 {
 687                         Type t = GetType (typeName, false, ignoreCase);
 688                         if (t == null)
 689                                 return null;
 690
 691                         try {
 692                                 return Activator.CreateInstance (t, bindingAttr, binder, args, culture, activationAttributes);
 693                         } catch (InvalidOperationException) {
 694                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 695                         }
 696                 }
 697
 698                 public Module[] GetLoadedModules ()
 699                 {
 700                         return GetLoadedModules (false);
 701                 }
 702
 703                 public Module[] GetModules ()
 704                 {
 705                         return GetModules (false);
 706                 }
 707
 708                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 709                 internal virtual extern Module[] GetModulesInternal ();
 710
 711                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 712                 public extern virtual String[] GetManifestResourceNames ();
 713
 714                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 715                 public extern static Assembly GetExecutingAssembly ();
 716
 717                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 718                 public extern static Assembly GetCallingAssembly ();
 719
 720                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 721                 internal static extern AssemblyName[] GetReferencedAssemblies (Assembly module);
 722
 723                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 724                 private extern bool GetManifestResourceInfoInternal (String name, ManifestResourceInfo info);
 725
 726                 public virtual ManifestResourceInfo GetManifestResourceInfo (String resourceName)
 727                 {
 728                         if (resourceName == null)
 729                                 throw new ArgumentNullException ("resourceName");
 730                         if (resourceName.Length == 0)
 731                                 throw new ArgumentException ("String cannot have zero length.");
 732                         ManifestResourceInfo result = new ManifestResourceInfo ();
 733                         bool found = GetManifestResourceInfoInternal (resourceName, result);
 734                         if (found)
 735                                 return result;
 736                         else
 737                                 return null;
 738                 }
 739
 740                 private class ResourceCloseHandler {
 741 #pragma warning disable 169, 414
 742                         Module module;
 743 #pragma warning restore 169, 414
 744
 745                         public ResourceCloseHandler (Module module) {
 746                                 this.module = module;
 747                         }
 748
 749                         public void OnClose (object sender, EventArgs e) {
 750                                 // The module dtor will take care of things
 751                                 module = null;
 752                         }
 753                 }
 754
 755                 //
 756                 // The following functions are only for the Mono Debugger.
 757                 //
 758
 759                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 760                 internal static extern int MonoDebugger_GetMethodToken (MethodBase method);
 761
 762                 [MonoTODO ("Currently it always returns zero")]
 763                 [ComVisible (false)]
 764                 public
 765 #if NET_4_0
 766                 virtual
 767 #endif
 768                 long HostContext {
 769                         get { return 0; }
 770                 }
 771
 772
 773                 internal virtual Module GetManifestModule () {
 774                         return GetManifestModuleInternal ();
 775                 }
 776
 777                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 778                 internal extern Module GetManifestModuleInternal ();
 779
 780                 [ComVisible (false)]
 781                 public virtual extern bool ReflectionOnly {
 782                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 783                         get;
 784                 }
 785
 786                 public override int GetHashCode ()
 787                 {
 788                         return base.GetHashCode ();
 789                 }
 790
 791                 public override bool Equals (object o)
 792                 {
 793                         if (((object) this) == o)
 794                                 return true;
 795
 796                         if (o == null)
 797                                 return false;
 798
 799                         Assembly other = (Assembly) o;
 800                         return other._mono_assembly == _mono_assembly;
 801                 }
 802
 803 #if !NET_2_1
 804                 // Code Access Security
 805
 806                 internal void Resolve ()
 807                 {
 808                         lock (this) {
 809                                 // FIXME: As we (currently) delay the resolution until the first CAS
 810                                 // Demand it's too late to evaluate the Minimum permission set as a
 811                                 // condition to load the assembly into the AppDomain
 812                                 LoadAssemblyPermissions ();
 813                                 Evidence e = new Evidence (UnprotectedGetEvidence ()); // we need a copy to add PRE
 814                                 e.AddHost (new PermissionRequestEvidence (_minimum, _optional, _refuse));
 815                                 _granted = SecurityManager.ResolvePolicy (e,
 816                                         _minimum, _optional, _refuse, out _denied);
 817                         }
 818                 }
 819
 820                 internal PermissionSet GrantedPermissionSet {
 821                         get {
 822                                 if (_granted == null) {
 823                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 824                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 825                                                         return DefaultPolicies.FullTrust;
 826                                                 else
 827                                                         return null; // we can't resolve during resolution
 828                                         }
 829                                         Resolve ();
 830                                 }
 831                                 return _granted;
 832                         }
 833                 }
 834
 835                 internal PermissionSet DeniedPermissionSet {
 836                         get {
 837                                 // yes we look for granted, as denied may be null
 838                                 if (_granted == null) {
 839                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 840                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 841                                                         return null;
 842                                                 else
 843                                                         return DefaultPolicies.FullTrust; // deny unrestricted
 844                                         }
 845                                         Resolve ();
 846                                 }
 847                                 return _denied;
 848                         }
 849                 }
 850
 851                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 852                 extern internal static bool LoadPermissions (Assembly a,
 853                         ref IntPtr minimum, ref int minLength,
 854                         ref IntPtr optional, ref int optLength,
 855                         ref IntPtr refused, ref int refLength);
 856
 857                 // Support for SecurityAction.RequestMinimum, RequestOptional and RequestRefuse
 858                 private void LoadAssemblyPermissions ()
 859                 {
 860                         IntPtr minimum = IntPtr.Zero, optional = IntPtr.Zero, refused = IntPtr.Zero;
 861                         int minLength = 0, optLength = 0, refLength = 0;
 862                         if (LoadPermissions (this, ref minimum, ref minLength, ref optional,
 863                                 ref optLength, ref refused, ref refLength)) {
 864
 865                                 // Note: no need to cache these permission sets as they will only be created once
 866                                 // at assembly resolution time.
 867                                 if (minLength > 0) {
 868                                         byte[] data = new byte [minLength];
 869                                         Marshal.Copy (minimum, data, 0, minLength);
 870                                         _minimum = SecurityManager.Decode (data);
 871                                 }
 872                                 if (optLength > 0) {
 873                                         byte[] data = new byte [optLength];
 874                                         Marshal.Copy (optional, data, 0, optLength);
 875                                         _optional = SecurityManager.Decode (data);
 876                                 }
 877                                 if (refLength > 0) {
 878                                         byte[] data = new byte [refLength];
 879                                         Marshal.Copy (refused, data, 0, refLength);
 880                                         _refuse = SecurityManager.Decode (data);
 881                                 }
 882                         }
 883                 }
 884
 885 #if NET_4_0
 886                 public virtual PermissionSet PermissionSet {
 887                         get { return this.GrantedPermissionSet; }
 888                 }
 889
 890                 public virtual SecurityRuleSet SecurityRuleSet {
 891                         get { throw CreateNIE (); }
 892                 }
 893 #endif
 894
 895 #endif
 896
 897 #if NET_4_0
 898                 static Exception CreateNIE ()
 899                 {
 900                         return new NotImplementedException ("Derived classes must implement it");
 901                 }
 902
 903                 public virtual IList<CustomAttributeData> GetCustomAttributesData ()
 904                 {
 905                         return CustomAttributeData.GetCustomAttributes (this);
 906                 }
 907
 908                 [MonoTODO]
 909                 public bool IsFullyTrusted {
 910                         get { return true; }
 911                 }
 912
 913                 public virtual Type GetType (string name, bool throwOnError, bool ignoreCase)
 914                 {
 915                         throw CreateNIE ();
 916                 }
 917
 918                 public virtual Module GetModule (String name)
 919                 {
 920                         throw CreateNIE ();
 921                 }
 922
 923                 public virtual AssemblyName[] GetReferencedAssemblies ()
 924                 {
 925                         throw CreateNIE ();
 926                 }
 927
 928                 public virtual Module[] GetModules (bool getResourceModules)
 929                 {
 930                         throw CreateNIE ();
 931                 }
 932
 933                 [MonoTODO ("Always returns the same as GetModules")]
 934                 public virtual Module[] GetLoadedModules (bool getResourceModules)
 935                 {
 936                         throw CreateNIE ();
 937                 }
 938
 939                 public virtual Assembly GetSatelliteAssembly (CultureInfo culture)
 940                 {
 941                         throw CreateNIE ();
 942                 }
 943
 944                 public virtual Assembly GetSatelliteAssembly (CultureInfo culture, Version version)
 945                 {
 946                         throw CreateNIE ();
 947                 }
 948
 949                 public virtual Module ManifestModule {
 950                         get { throw CreateNIE (); }
 951                 }
 952
 953                 public virtual bool GlobalAssemblyCache {
 954                         get { throw CreateNIE (); }
 955                 }
 956
 957                 public virtual bool IsDynamic {
 958                         get { return false; }
 959                 }
 960
 961                 public static bool operator == (Assembly left, Assembly right)
 962                 {
 963                         if ((object)left == (object)right)
 964                                 return true;
 965                         if ((object)left == null ^ (object)right == null)
 966                                 return false;
 967                         return left.Equals (right);
 968                 }
 969
 970                 public static bool operator != (Assembly left, Assembly right)
 971                 {
 972                         if ((object)left == (object)right)
 973                                 return false;
 974                         if ((object)left == null ^ (object)right == null)
 975                                 return true;
 976                         return !left.Equals (right);
 977                 }
 978 #endif
 979
 980 #if NET_4_5
 981                 public virtual IEnumerable<TypeInfo> DefinedTypes {
 982                         get {
 983                                 foreach (var type in GetTypes ())
 984                                         yield return new TypeDelegator (type);
 985                         }
 986                 }
 987
 988                 public virtual IEnumerable<Type> ExportedTypes {
 989                         get { return GetExportedTypes (); }
 990                 }
 991
 992                 public virtual IEnumerable<Module> Modules {
 993                         get { return GetModules (); }
 994                 }
 995
 996                 public virtual IEnumerable<CustomAttributeData> CustomAttributes {
 997                         get { return GetCustomAttributesData (); }
 998                 }
 999 #endif
1000         }
1001 }