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.Emit;
  35 using System.IO;
  36 using System.Globalization;
  37 using System.Runtime.CompilerServices;
  38 using System.Runtime.InteropServices;
  39 using System.Collections;
  40 using System.Configuration.Assemblies;
  41
  42 using Mono.Security;
  43
  44 namespace System.Reflection {
  45
  46 #if NET_2_0
  47         [ComVisible (true)]
  48         [ComDefaultInterfaceAttribute (typeof (_Assembly))]
  49 #endif
  50         [Serializable]
  51         [ClassInterface(ClassInterfaceType.None)]
  52         public class Assembly : System.Reflection.ICustomAttributeProvider, _Assembly,
  53                 System.Security.IEvidenceFactory, System.Runtime.Serialization.ISerializable {
  54
  55                 internal class ResolveEventHolder {
  56                         public event ModuleResolveEventHandler ModuleResolve;
  57                 }
  58
  59                 // Note: changes to fields must be reflected in _MonoReflectionAssembly struct (object-internals.h)
  60 #pragma warning disable 169
  61                 private IntPtr _mono_assembly;
  62 #pragma warning restore 169
  63
  64                 private ResolveEventHolder resolve_event_holder;
  65                 private Evidence _evidence;
  66                 internal PermissionSet _minimum;        // for SecurityAction.RequestMinimum
  67                 internal PermissionSet _optional;       // for SecurityAction.RequestOptional
  68                 internal PermissionSet _refuse;         // for SecurityAction.RequestRefuse
  69                 private PermissionSet _granted;         // for the resolved assembly granted permissions
  70                 private PermissionSet _denied;          // for the resolved assembly denied permissions
  71                 private bool fromByteArray;
  72                 private string assemblyName;
  73
  74                 internal Assembly ()
  75                 {
  76                         resolve_event_holder = new ResolveEventHolder ();
  77                 }
  78
  79                 //
  80                 // We can't store the event directly in this class, since the
  81                 // compiler would silently insert the fields before _mono_assembly
  82                 //
  83                 public event ModuleResolveEventHandler ModuleResolve {
  84                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  85                         add {
  86                                 resolve_event_holder.ModuleResolve += value;
  87                         }
  88                         [SecurityPermission (SecurityAction.LinkDemand, ControlAppDomain = true)]
  89                         remove {
  90                                 resolve_event_holder.ModuleResolve -= value;
  91                         }
  92                 }
  93
  94                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  95                 private extern string get_code_base (bool escaped);
  96
  97                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
  98                 private extern string get_fullname ();
  99
 100                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 101                 private extern string get_location ();
 102
 103                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 104                 private extern string InternalImageRuntimeVersion ();
 105
 106                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 107                 private extern bool get_global_assembly_cache ();
 108
 109                 // SECURITY: this should be the only caller to icall get_code_base
 110                 private string GetCodeBase (bool escaped)
 111                 {
 112                         string cb = get_code_base (escaped);
 113                         if (SecurityManager.SecurityEnabled) {
 114                                 // we cannot divulge local file informations
 115                                 if (String.Compare ("FILE://", 0, cb, 0, 7, true, CultureInfo.InvariantCulture) == 0) {
 116                                         string file = cb.Substring (7);
 117                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, file).Demand ();
 118                                 }
 119                         }
 120                         return cb;
 121                 }
 122
 123                 public virtual string CodeBase {
 124                         get { return GetCodeBase (false); }
 125                 }
 126
 127                 public virtual string EscapedCodeBase {
 128                         get { return GetCodeBase (true); }
 129                 }
 130
 131                 public virtual string FullName {
 132                         get {
 133                                 //
 134                                 // FIXME: This is wrong, but it gets us going
 135                                 // in the compiler for now
 136                                 //
 137                                 return ToString ();
 138                         }
 139                 }
 140
 141                 public virtual extern MethodInfo EntryPoint {
 142                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 143                         get;
 144                 }
 145
 146                 public virtual Evidence Evidence {
 147                         [SecurityPermission (SecurityAction.Demand, ControlEvidence = true)]
 148                         get { return UnprotectedGetEvidence (); }
 149                 }
 150
 151                 // note: the security runtime requires evidences but may be unable to do so...
 152                 internal Evidence UnprotectedGetEvidence ()
 153                 {
 154                         // if the host (runtime) hasn't provided it's own evidence...
 155                         if (_evidence == null) {
 156                                 // ... we will provide our own
 157                                 lock (this) {
 158                                         _evidence = Evidence.GetDefaultHostEvidence (this);
 159                                 }
 160                         }
 161                         return _evidence;
 162                 }
 163
 164                 public bool GlobalAssemblyCache {
 165                         get {
 166                                 return get_global_assembly_cache ();
 167                         }
 168                 }
 169
 170                 internal bool FromByteArray {
 171                         set { fromByteArray = value; }
 172                 }
 173
 174                 public virtual String Location {
 175                         get {
 176                                 if (fromByteArray)
 177                                         return String.Empty;
 178
 179                                 string loc = get_location ();
 180                                 if ((loc != String.Empty) && SecurityManager.SecurityEnabled) {
 181                                         // we cannot divulge local file informations
 182                                         new FileIOPermission (FileIOPermissionAccess.PathDiscovery, loc).Demand ();
 183                                 }
 184                                 return loc;
 185                         }
 186                 }
 187
 188 #if NET_1_1
 189                 [ComVisible (false)]
 190                 public virtual string ImageRuntimeVersion {
 191                         get {
 192                                 return InternalImageRuntimeVersion ();
 193                         }
 194                 }
 195 #endif
 196
 197                 [SecurityPermission (SecurityAction.LinkDemand, SerializationFormatter = true)]
 198                 public virtual void GetObjectData (SerializationInfo info, StreamingContext context)
 199                 {
 200                         if (info == null)
 201                                 throw new ArgumentNullException ("info");
 202
 203                         UnitySerializationHolder.GetAssemblyData (this, info, context);
 204                 }
 205
 206 #if ONLY_1_1
 207                 public new Type GetType ()
 208                 {
 209                         return base.GetType ();
 210                 }
 211 #endif
 212
 213                 public virtual bool IsDefined (Type attributeType, bool inherit)
 214                 {
 215                         return MonoCustomAttrs.IsDefined (this, attributeType, inherit);
 216                 }
 217
 218                 public virtual object [] GetCustomAttributes (bool inherit)
 219                 {
 220                         return MonoCustomAttrs.GetCustomAttributes (this, inherit);
 221                 }
 222
 223                 public virtual object [] GetCustomAttributes (Type attributeType, bool inherit)
 224                 {
 225                         return MonoCustomAttrs.GetCustomAttributes (this, attributeType, inherit);
 226                 }
 227
 228                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 229                 private extern object GetFilesInternal (String name, bool getResourceModules);
 230
 231                 public virtual FileStream[] GetFiles ()
 232                 {
 233                         return GetFiles (false);
 234                 }
 235
 236                 public virtual FileStream [] GetFiles (bool getResourceModules)
 237                 {
 238                         string[] names = (string[]) GetFilesInternal (null, getResourceModules);
 239                         if (names == null)
 240                                 return new FileStream [0];
 241
 242                         string location = Location;
 243
 244                         FileStream[] res;
 245                         if (location != String.Empty) {
 246                                 res = new FileStream [names.Length + 1];
 247                                 res [0] = new FileStream (location, FileMode.Open, FileAccess.Read);
 248                                 for (int i = 0; i < names.Length; ++i)
 249                                         res [i + 1] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 250                         } else {
 251                                 res = new FileStream [names.Length];
 252                                 for (int i = 0; i < names.Length; ++i)
 253                                         res [i] = new FileStream (names [i], FileMode.Open, FileAccess.Read);
 254                         }
 255                         return res;
 256                 }
 257
 258                 public virtual FileStream GetFile (String name)
 259                 {
 260                         if (name == null)
 261                                 throw new ArgumentNullException (null, "Name cannot be null.");
 262                         if (name.Length == 0)
 263                                 throw new ArgumentException ("Empty name is not valid");
 264
 265                         string filename = (string)GetFilesInternal (name, true);
 266                         if (filename != null)
 267                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 268                         else
 269                                 return null;
 270                 }
 271
 272                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 273                 internal extern IntPtr GetManifestResourceInternal (String name, out int size, out Module module);
 274
 275                 public virtual Stream GetManifestResourceStream (String name)
 276                 {
 277                         if (name == null)
 278                                 throw new ArgumentNullException ("name");
 279                         if (name.Length == 0)
 280                                 throw new ArgumentException ("String cannot have zero length.",
 281                                         "name");
 282
 283                         ManifestResourceInfo info = GetManifestResourceInfo (name);
 284                         if (info == null)
 285                                 return null;
 286
 287                         if (info.ReferencedAssembly != null)
 288                                 return info.ReferencedAssembly.GetManifestResourceStream (name);
 289                         if ((info.FileName != null) && (info.ResourceLocation == 0)) {
 290                                 if (fromByteArray)
 291 #if NET_2_0
 292                                         throw new FileNotFoundException (info.FileName);
 293 #else
 294                                         return null;
 295 #endif
 296
 297                                 string filename = Path.Combine (Path.GetDirectoryName (Location),
 298                                                                                         info.FileName);
 299                                 return new FileStream (filename, FileMode.Open, FileAccess.Read);
 300                         }
 301
 302                         int size;
 303                         Module module;
 304                         IntPtr data = GetManifestResourceInternal (name, out size, out module);
 305                         if (data == (IntPtr) 0)
 306                                 return null;
 307                         else {
 308 #if NET_2_0
 309                                 UnmanagedMemoryStream stream;
 310                                 unsafe {
 311                                         stream = new UnmanagedMemoryStream ((byte*) data, size);
 312                                 }
 313 #else
 314                                 IntPtrStream stream = new IntPtrStream (data, size);
 315 #endif
 316                                 /*
 317                                  * The returned pointer points inside metadata, so
 318                                  * we have to increase the refcount of the module, and decrease
 319                                  * it when the stream is finalized.
 320                                  */
 321                                 stream.Closed += new EventHandler (new ResourceCloseHandler (module).OnClose);
 322                                 return stream;
 323                         }
 324                 }
 325
 326                 public virtual Stream GetManifestResourceStream (Type type, String name)
 327                 {
 328                         string ns;
 329                         if (type != null) {
 330                                 ns = type.Namespace;
 331                         } else {
 332                                 if (name == null)
 333                                         throw new ArgumentNullException ("type");
 334                                 ns = null;
 335                         }
 336
 337                         if (ns == null || ns.Length == 0)
 338                                 return GetManifestResourceStream (name);
 339                         else
 340                                 return GetManifestResourceStream (ns + "." + name);
 341                 }
 342
 343                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 344                 internal virtual extern Type[] GetTypes (bool exportedOnly);
 345
 346                 public virtual Type[] GetTypes ()
 347                 {
 348                         return GetTypes (false);
 349                 }
 350
 351                 public virtual Type[] GetExportedTypes ()
 352                 {
 353                         return GetTypes (true);
 354                 }
 355
 356                 public virtual Type GetType (String name, Boolean throwOnError)
 357                 {
 358                         return GetType (name, throwOnError, false);
 359                 }
 360
 361                 public virtual Type GetType (String name) {
 362                         return GetType (name, false, false);
 363                 }
 364
 365                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 366                 internal extern Type InternalGetType (Module module, String name, Boolean throwOnError, Boolean ignoreCase);
 367
 368                 public Type GetType (string name, bool throwOnError, bool ignoreCase)
 369                 {
 370                         if (name == null)
 371                                 throw new ArgumentNullException (name);
 372
 373                         return InternalGetType (null, name, throwOnError, ignoreCase);
 374                 }
 375
 376                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 377                 internal extern static void InternalGetAssemblyName (string assemblyFile, AssemblyName aname);
 378
 379                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 380                 static extern void FillName (Assembly ass, AssemblyName aname);
 381
 382                 [MonoTODO ("copiedName == true is not supported")]
 383                 public virtual AssemblyName GetName (Boolean copiedName)
 384                 {
 385                         // CodeBase, which is restricted, will be copied into the AssemblyName object so...
 386                         if (SecurityManager.SecurityEnabled) {
 387                                 GetCodeBase (true); // this will ensure the Demand is made
 388                         }
 389                         return UnprotectedGetName ();
 390                 }
 391
 392                 public virtual AssemblyName GetName ()
 393                 {
 394                         return GetName (false);
 395                 }
 396
 397                 // the security runtime requires access to the assemblyname (e.g. to get the strongname)
 398                 internal virtual AssemblyName UnprotectedGetName ()
 399                 {
 400                         AssemblyName aname = new AssemblyName ();
 401                         FillName (this, aname);
 402                         return aname;
 403                 }
 404
 405                 public override string ToString ()
 406                 {
 407                         // note: ToString work without requiring CodeBase (so no checks are needed)
 408
 409                         if (assemblyName != null)
 410                                 return assemblyName;
 411
 412                         assemblyName = get_fullname ();
 413                         return assemblyName;
 414                 }
 415
 416                 public static String CreateQualifiedName (String assemblyName, String typeName)
 417                 {
 418                         return typeName + ", " + assemblyName;
 419                 }
 420
 421                 public static Assembly GetAssembly (Type type)
 422                 {
 423                         if (type != null)
 424                                 return type.Assembly;
 425                         throw new ArgumentNullException ("type");
 426                 }
 427
 428
 429                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 430                 public static extern Assembly GetEntryAssembly();
 431
 432                 public Assembly GetSatelliteAssembly (CultureInfo culture)
 433                 {
 434                         return GetSatelliteAssembly (culture, null);
 435                 }
 436
 437                 public Assembly GetSatelliteAssembly (CultureInfo culture, Version version)
 438                 {
 439                         if (culture == null)
 440                                 throw new ArgumentException ("culture");
 441
 442                         AssemblyName aname = GetName (true);
 443                         if (version != null)
 444                                 aname.Version = version;
 445
 446                         aname.CultureInfo = culture;
 447                         aname.Name = aname.Name + ".resources";
 448                         try {
 449                                 return Load (aname);
 450                         } catch (Exception) {
 451                                 // Try the assembly directory
 452                                 string fullName = Path.Combine (Path.GetDirectoryName (Location), Path.Combine (culture.Name, aname.Name + ".dll"));
 453                                 return LoadFrom (fullName);
 454                         }
 455                 }
 456
 457                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 458                 private extern static Assembly LoadFrom (String assemblyFile, bool refonly);
 459
 460                 public static Assembly LoadFrom (String assemblyFile)
 461                 {
 462                         return LoadFrom (assemblyFile, false);
 463                 }
 464
 465                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence)
 466                 {
 467                         Assembly a = LoadFrom (assemblyFile, false);
 468                         if ((a != null) && (securityEvidence != null)) {
 469                                 // merge evidence (i.e. replace defaults with provided evidences)
 470                                 a.Evidence.Merge (securityEvidence);
 471                         }
 472                         return a;
 473                 }
 474
 475 #if NET_1_1
 476
 477                 [MonoTODO("This overload is not currently implemented")]
 478                 // FIXME: What are we missing?
 479                 public static Assembly LoadFrom (String assemblyFile, Evidence securityEvidence, byte[] hashValue, AssemblyHashAlgorithm hashAlgorithm)
 480                 {
 481                         if (assemblyFile == null)
 482                                 throw new ArgumentNullException ("assemblyFile");
 483                         if (assemblyFile == String.Empty)
 484                                 throw new ArgumentException ("Name can't be the empty string", "assemblyFile");
 485                         throw new NotImplementedException ();
 486                 }
 487
 488                 public static Assembly LoadFile (String path, Evidence securityEvidence)
 489                 {
 490                         if (path == null)
 491                                 throw new ArgumentNullException ("path");
 492                         if (path == String.Empty)
 493                                 throw new ArgumentException ("Path can't be empty", "path");
 494                         // FIXME: Make this do the right thing
 495                         return LoadFrom (path, securityEvidence);
 496                 }
 497
 498                 public static Assembly LoadFile (String path)
 499                 {
 500                         return LoadFile (path, null);
 501                 }
 502 #endif
 503
 504                 public static Assembly Load (String assemblyString)
 505                 {
 506                         return AppDomain.CurrentDomain.Load (assemblyString);
 507                 }
 508
 509                 public static Assembly Load (String assemblyString, Evidence assemblySecurity)
 510                 {
 511                         return AppDomain.CurrentDomain.Load (assemblyString, assemblySecurity);
 512                 }
 513
 514                 public static Assembly Load (AssemblyName assemblyRef)
 515                 {
 516                         return AppDomain.CurrentDomain.Load (assemblyRef);
 517                 }
 518
 519                 public static Assembly Load (AssemblyName assemblyRef, Evidence assemblySecurity)
 520                 {
 521                         return AppDomain.CurrentDomain.Load (assemblyRef, assemblySecurity);
 522                 }
 523
 524                 public static Assembly Load (Byte[] rawAssembly)
 525                 {
 526                         return AppDomain.CurrentDomain.Load (rawAssembly);
 527                 }
 528
 529                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore)
 530                 {
 531                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore);
 532                 }
 533
 534                 public static Assembly Load (Byte[] rawAssembly, Byte[] rawSymbolStore,
 535                                              Evidence securityEvidence)
 536                 {
 537                         return AppDomain.CurrentDomain.Load (rawAssembly, rawSymbolStore, securityEvidence);
 538                 }
 539
 540 #if NET_2_0 || BOOTSTRAP_NET_2_0
 541                 public static Assembly ReflectionOnlyLoad (byte[] rawAssembly)
 542                 {
 543                         return AppDomain.CurrentDomain.Load (rawAssembly, null, null, true);
 544                 }
 545
 546                 public static Assembly ReflectionOnlyLoad (string assemblyString)
 547                 {
 548                         return AppDomain.CurrentDomain.Load (assemblyString, null, true);
 549                 }
 550
 551                 public static Assembly ReflectionOnlyLoadFrom (string assemblyFile)
 552                 {
 553                         if (assemblyFile == null)
 554                                 throw new ArgumentNullException ("assemblyFile");
 555
 556                         return LoadFrom (assemblyFile, true);
 557                 }
 558 #endif
 559
 560 #if NET_2_0
 561                 [Obsolete ("")]
 562 #endif
 563                 public static Assembly LoadWithPartialName (string partialName)
 564                 {
 565                         return LoadWithPartialName (partialName, null);
 566                 }
 567
 568                 [MonoTODO ("Not implemented")]
 569                 public Module LoadModule (string moduleName, byte [] rawModule)
 570                 {
 571                         throw new NotImplementedException ();
 572                 }
 573
 574                 [MonoTODO ("Not implemented")]
 575                 public Module LoadModule (string moduleName, byte [] rawModule, byte [] rawSymbolStore)
 576                 {
 577                         throw new NotImplementedException ();
 578                 }
 579
 580                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 581                 private static extern Assembly load_with_partial_name (string name, Evidence e);
 582
 583 #if NET_2_0
 584                 [Obsolete ("")]
 585 #endif
 586                 public static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence)
 587                 {
 588                         return LoadWithPartialName (partialName, securityEvidence, true);
 589                 }
 590
 591                 /**
 592                  * LAMESPEC: It is possible for this method to throw exceptions IF the name supplied
 593                  * is a valid gac name and contains filesystem entry charachters at the end of the name
 594                  * ie System/// will throw an exception. However ////System will not as that is canocolized
 595                  * out of the name.
 596                  */
 597
 598                 // FIXME: LoadWithPartialName must look cache (no CAS) or read from disk (CAS)
 599                 internal static Assembly LoadWithPartialName (string partialName, Evidence securityEvidence, bool oldBehavior)
 600                 {
 601                         if (!oldBehavior)
 602                                 throw new NotImplementedException ();
 603
 604                         if (partialName == null)
 605                                 throw new NullReferenceException ();
 606
 607                         return load_with_partial_name (partialName, securityEvidence);
 608                 }
 609
 610                 public Object CreateInstance (String typeName)
 611                 {
 612                         return CreateInstance (typeName, false);
 613                 }
 614
 615                 public Object CreateInstance (String typeName, Boolean ignoreCase)
 616                 {
 617                         Type t = GetType (typeName, false, ignoreCase);
 618                         if (t == null)
 619                                 return null;
 620
 621                         try {
 622                                 return Activator.CreateInstance (t);
 623                         } catch (InvalidOperationException) {
 624                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 625                         }
 626                 }
 627
 628                 public Object CreateInstance (String typeName, Boolean ignoreCase,
 629                                               BindingFlags bindingAttr, Binder binder,
 630                                               Object[] args, CultureInfo culture,
 631                                               Object[] activationAttributes)
 632                 {
 633                         Type t = GetType (typeName, false, ignoreCase);
 634                         if (t == null)
 635                                 return null;
 636
 637                         try {
 638                                 return Activator.CreateInstance (t, bindingAttr, binder, args, culture, activationAttributes);
 639                         } catch (InvalidOperationException) {
 640                                 throw new ArgumentException ("It is illegal to invoke a method on a Type loaded via ReflectionOnly methods.");
 641                         }
 642                 }
 643
 644                 public Module[] GetLoadedModules ()
 645                 {
 646                         return GetLoadedModules (false);
 647                 }
 648
 649                 // FIXME: Currently, the two sets of modules are equal
 650                 public Module[] GetLoadedModules (bool getResourceModules)
 651                 {
 652                         return GetModules (getResourceModules);
 653                 }
 654
 655                 public Module[] GetModules ()
 656                 {
 657                         return GetModules (false);
 658                 }
 659
 660                 public Module GetModule (String name)
 661                 {
 662                         if (name == null)
 663                                 throw new ArgumentNullException ("name");
 664                         if (name.Length == 0)
 665                                 throw new ArgumentException ("Name can't be empty");
 666
 667                         Module[] modules = GetModules (true);
 668                         foreach (Module module in modules) {
 669                                 if (module.ScopeName == name)
 670                                         return module;
 671                         }
 672
 673                         return null;
 674                 }
 675
 676                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 677                 internal virtual extern Module[] GetModulesInternal ();
 678
 679                 public Module[] GetModules (bool getResourceModules) {
 680                         Module[] modules = GetModulesInternal ();
 681
 682                         if (!getResourceModules) {
 683                                 ArrayList result = new ArrayList (modules.Length);
 684                                 foreach (Module m in modules)
 685                                         if (!m.IsResource ())
 686                                                 result.Add (m);
 687                                 return (Module[])result.ToArray (typeof (Module));
 688                         }
 689                         else
 690                                 return modules;
 691                 }
 692
 693                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 694                 internal extern string[] GetNamespaces ();
 695
 696                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 697                 public extern virtual String[] GetManifestResourceNames ();
 698
 699                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 700                 public extern static Assembly GetExecutingAssembly ();
 701
 702                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 703                 public extern static Assembly GetCallingAssembly ();
 704
 705                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 706                 public extern AssemblyName[] GetReferencedAssemblies ();
 707
 708                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 709                 private extern bool GetManifestResourceInfoInternal (String name, ManifestResourceInfo info);
 710
 711                 public virtual ManifestResourceInfo GetManifestResourceInfo (String resourceName)
 712                 {
 713                         if (resourceName == null)
 714                                 throw new ArgumentNullException ("resourceName");
 715                         if (resourceName.Length == 0)
 716                                 throw new ArgumentException ("String cannot have zero length.");
 717                         ManifestResourceInfo result = new ManifestResourceInfo ();
 718                         bool found = GetManifestResourceInfoInternal (resourceName, result);
 719                         if (found)
 720                                 return result;
 721                         else
 722                                 return null;
 723                 }
 724
 725                 private class ResourceCloseHandler {
 726 #pragma warning disable 169, 414
 727                         Module module;
 728 #pragma warning restore 169, 414
 729
 730                         public ResourceCloseHandler (Module module) {
 731                                 this.module = module;
 732                         }
 733
 734                         public void OnClose (object sender, EventArgs e) {
 735                                 // The module dtor will take care of things
 736                                 module = null;
 737                         }
 738                 }
 739
 740                 //
 741                 // The following functions are only for the Mono Debugger.
 742                 //
 743
 744                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 745                 internal static extern int MonoDebugger_GetMethodToken (MethodBase method);
 746
 747 #if NET_2_0 || BOOTSTRAP_NET_2_0
 748                 [MonoTODO ("Always returns zero")]
 749                 [ComVisible (false)]
 750                 public long HostContext {
 751                         get { return 0; }
 752                 }
 753
 754                 [ComVisible (false)]
 755                 public Module ManifestModule {
 756                         get {
 757                                 return GetManifestModule ();
 758                         }
 759                 }
 760
 761                 internal virtual Module GetManifestModule () {
 762                         return GetManifestModuleInternal ();
 763                 }
 764
 765                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 766                 internal extern Module GetManifestModuleInternal ();
 767
 768                 [ComVisible (false)]
 769                 public virtual extern bool ReflectionOnly {
 770                         [MethodImplAttribute (MethodImplOptions.InternalCall)]
 771                         get;
 772                 }
 773 #endif
 774
 775                 // Code Access Security
 776
 777                 internal void Resolve ()
 778                 {
 779                         lock (this) {
 780                                 // FIXME: As we (currently) delay the resolution until the first CAS
 781                                 // Demand it's too late to evaluate the Minimum permission set as a
 782                                 // condition to load the assembly into the AppDomain
 783                                 LoadAssemblyPermissions ();
 784                                 Evidence e = new Evidence (UnprotectedGetEvidence ()); // we need a copy to add PRE
 785                                 e.AddHost (new PermissionRequestEvidence (_minimum, _optional, _refuse));
 786                                 _granted = SecurityManager.ResolvePolicy (e,
 787                                         _minimum, _optional, _refuse, out _denied);
 788                         }
 789                 }
 790
 791                 internal PermissionSet GrantedPermissionSet {
 792                         get {
 793                                 if (_granted == null) {
 794                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 795                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 796                                                         return DefaultPolicies.FullTrust;
 797                                                 else
 798                                                         return null; // we can't resolve during resolution
 799                                         }
 800                                         Resolve ();
 801                                 }
 802                                 return _granted;
 803                         }
 804                 }
 805
 806                 internal PermissionSet DeniedPermissionSet {
 807                         get {
 808                                 // yes we look for granted, as denied may be null
 809                                 if (_granted == null) {
 810                                         if (SecurityManager.ResolvingPolicyLevel != null) {
 811                                                 if (SecurityManager.ResolvingPolicyLevel.IsFullTrustAssembly (this))
 812                                                         return null;
 813                                                 else
 814                                                         return DefaultPolicies.FullTrust; // deny unrestricted
 815                                         }
 816                                         Resolve ();
 817                                 }
 818                                 return _denied;
 819                         }
 820                 }
 821
 822                 [MethodImplAttribute (MethodImplOptions.InternalCall)]
 823                 extern internal static bool LoadPermissions (Assembly a,
 824                         ref IntPtr minimum, ref int minLength,
 825                         ref IntPtr optional, ref int optLength,
 826                         ref IntPtr refused, ref int refLength);
 827
 828                 // Support for SecurityAction.RequestMinimum, RequestOptional and RequestRefuse
 829                 private void LoadAssemblyPermissions ()
 830                 {
 831                         IntPtr minimum = IntPtr.Zero, optional = IntPtr.Zero, refused = IntPtr.Zero;
 832                         int minLength = 0, optLength = 0, refLength = 0;
 833                         if (LoadPermissions (this, ref minimum, ref minLength, ref optional,
 834                                 ref optLength, ref refused, ref refLength)) {
 835
 836                                 // Note: no need to cache these permission sets as they will only be created once
 837                                 // at assembly resolution time.
 838                                 if (minLength > 0) {
 839                                         byte[] data = new byte [minLength];
 840                                         Marshal.Copy (minimum, data, 0, minLength);
 841                                         _minimum = SecurityManager.Decode (data);
 842                                 }
 843                                 if (optLength > 0) {
 844                                         byte[] data = new byte [optLength];
 845                                         Marshal.Copy (optional, data, 0, optLength);
 846                                         _optional = SecurityManager.Decode (data);
 847                                 }
 848                                 if (refLength > 0) {
 849                                         byte[] data = new byte [refLength];
 850                                         Marshal.Copy (refused, data, 0, refLength);
 851                                         _refuse = SecurityManager.Decode (data);
 852                                 }
 853                         }
 854                 }
 855         }
 856 }