mcs/class/corlib/System.Reflection.Emit/AssemblyBuilder.cs

   1 //
   2 // System.Reflection.Emit/AssemblyBuilder.cs
   3 //
   4 // Author:
   5 //   Paolo Molaro (lupus@ximian.com)
   6 //
   7 // (C) 2001 Ximian, Inc.  http://www.ximian.com
   8 //
   9
  10 using System;
  11 using System.Reflection;
  12 using System.Resources;
  13 using System.IO;
  14 using System.Security.Policy;
  15 using System.Runtime.Serialization;
  16 using System.Globalization;
  17 using System.Runtime.CompilerServices;
  18 using System.Collections;
  19 using System.Runtime.InteropServices;
  20 using System.Security.Cryptography;
  21 using System.Security.Permissions;
  22
  23 using Mono.Security;
  24 using Mono.Security.Cryptography;
  25
  26 namespace System.Reflection.Emit {
  27
  28         internal struct RefEmitPermissionSet {
  29                 public SecurityAction action;
  30                 public string pset;
  31
  32                 public RefEmitPermissionSet (SecurityAction action, string pset) {
  33                         this.action = action;
  34                         this.pset = pset;
  35                 }
  36         }
  37
  38         internal struct MonoResource {
  39                 public byte[] data;
  40                 public string name;
  41                 public string filename;
  42                 public ResourceAttributes attrs;
  43                 public int offset;
  44         }
  45
  46         internal struct MonoWin32Resource {
  47                 public int res_type;
  48                 public int res_id;
  49                 public int lang_id;
  50                 public byte[] data;
  51
  52                 public MonoWin32Resource (int res_type, int res_id, int lang_id, byte[] data) {
  53                         this.res_type = res_type;
  54                         this.res_id = res_id;
  55                         this.lang_id = lang_id;
  56                         this.data = data;
  57                 }
  58         }
  59
  60         public sealed class AssemblyBuilder : Assembly {
  61                 #region Sync with reflection.h
  62                 private IntPtr dynamic_assembly;
  63                 private MethodInfo entry_point;
  64                 private ModuleBuilder[] modules;
  65                 private string name;
  66                 private string dir;
  67                 private CustomAttributeBuilder[] cattrs;
  68                 private MonoResource[] resources;
  69                 byte[] public_key;
  70                 string version;
  71                 string culture;
  72                 uint algid;
  73                 uint flags;
  74                 PEFileKinds pekind = PEFileKinds.Dll;
  75                 bool delay_sign;
  76                 uint access;
  77                 Module[] loaded_modules;
  78                 MonoWin32Resource[] win32_resources;
  79                 #endregion
  80                 internal Type corlib_object_type = typeof (System.Object);
  81                 internal Type corlib_value_type = typeof (System.ValueType);
  82                 internal Type corlib_enum_type = typeof (System.Enum);
  83                 internal Type corlib_void_type = typeof (void);
  84                 ArrayList resource_writers = null;
  85                 Win32VersionResource version_res;
  86                 bool created;
  87                 bool is_module_only;
  88
  89                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  90                 private static extern void basic_init (AssemblyBuilder ab);
  91
  92                 internal AssemblyBuilder (AssemblyName n, string directory, AssemblyBuilderAccess access) {
  93                         name = n.Name;
  94                         if (directory == null || directory == String.Empty)
  95                                 dir = Directory.GetCurrentDirectory ();
  96                         else
  97                                 dir = directory;
  98                         this.access = (uint)access;
  99
 100                         /* Set defaults from n */
 101                         if (n.CultureInfo != null) {
 102                                 culture = n.CultureInfo.Name;
 103                         }
 104                         Version v = n.Version;
 105                         if (v != null) {
 106                                 version = v.ToString ();
 107                         }
 108
 109                         basic_init (this);
 110                 }
 111
 112                 public override string CodeBase {
 113                         get {
 114                                 throw not_supported ();
 115                         }
 116                 }
 117
 118                 public override MethodInfo EntryPoint {
 119                         get {
 120                                 return entry_point;
 121                         }
 122                 }
 123
 124                 public override string Location {
 125                         get {
 126                                 throw not_supported ();
 127                         }
 128                 }
 129
 130 #if NET_1_1
 131                 /* This is to keep signature compatibility with MS.NET */
 132                 public override string ImageRuntimeVersion {
 133                         get {
 134                                 return base.ImageRuntimeVersion;
 135                         }
 136                 }
 137 #endif
 138
 139                 public void AddResourceFile (string name, string fileName)
 140                 {
 141                         AddResourceFile (name, fileName, ResourceAttributes.Public);
 142                 }
 143
 144                 public void AddResourceFile (string name, string fileName, ResourceAttributes attribute)
 145                 {
 146                         AddResourceFile (name, fileName, attribute, true);
 147                 }
 148
 149                 private void AddResourceFile (string name, string fileName, ResourceAttributes attribute, bool fileNeedsToExists)
 150                 {
 151                         check_name_and_filename (name, fileName, fileNeedsToExists);
 152
 153                         // Resource files are created/searched under the assembly storage
 154                         // directory
 155                         if (dir != null)
 156                                 fileName = Path.Combine (dir, fileName);
 157
 158                         if (resources != null) {
 159                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 160                                 System.Array.Copy(resources, new_r, resources.Length);
 161                                 resources = new_r;
 162                         } else {
 163                                 resources = new MonoResource [1];
 164                         }
 165                         int p = resources.Length - 1;
 166                         resources [p].name = name;
 167                         resources [p].filename = fileName;
 168                         resources [p].attrs = attribute;
 169                 }
 170
 171                 public void EmbedResourceFile (string name, string fileName)
 172                 {
 173                         EmbedResourceFile (name, fileName, ResourceAttributes.Public);
 174                 }
 175
 176                 public void EmbedResourceFile (string name, string fileName, ResourceAttributes attribute)
 177                 {
 178                         if (resources != null) {
 179                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 180                                 System.Array.Copy(resources, new_r, resources.Length);
 181                                 resources = new_r;
 182                         } else {
 183                                 resources = new MonoResource [1];
 184                         }
 185                         int p = resources.Length - 1;
 186                         resources [p].name = name;
 187                         resources [p].attrs = attribute;
 188                         try {
 189                                 FileStream s = new FileStream (fileName, FileMode.Open, FileAccess.Read);
 190                                 long len = s.Length;
 191                                 resources [p].data = new byte [len];
 192                                 s.Read (resources [p].data, 0, (int)len);
 193                                 s.Close ();
 194                         } catch {
 195                                 /* do something */
 196                         }
 197                 }
 198
 199                 internal void EmbedResource (string name, byte[] blob, ResourceAttributes attribute)
 200                 {
 201                         if (resources != null) {
 202                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 203                                 System.Array.Copy(resources, new_r, resources.Length);
 204                                 resources = new_r;
 205                         } else {
 206                                 resources = new MonoResource [1];
 207                         }
 208                         int p = resources.Length - 1;
 209                         resources [p].name = name;
 210                         resources [p].attrs = attribute;
 211                         resources [p].data = blob;
 212                 }
 213
 214                 public ModuleBuilder DefineDynamicModule (string name)
 215                 {
 216                         return DefineDynamicModule (name, name, false, true);
 217                 }
 218
 219                 public ModuleBuilder DefineDynamicModule (string name, bool emitSymbolInfo)
 220                 {
 221                         return DefineDynamicModule (name, name, emitSymbolInfo, true);
 222                 }
 223
 224                 public ModuleBuilder DefineDynamicModule(string name, string fileName)
 225                 {
 226                         return DefineDynamicModule (name, fileName, false, false);
 227                 }
 228
 229                 public ModuleBuilder DefineDynamicModule (string name, string fileName,
 230                                                           bool emitSymbolInfo)
 231                 {
 232                         return DefineDynamicModule (name, fileName, emitSymbolInfo, false);
 233                 }
 234
 235                 private ModuleBuilder DefineDynamicModule (string name, string fileName,
 236                                                                                                    bool emitSymbolInfo, bool transient)
 237                 {
 238                         check_name_and_filename (name, fileName, false);
 239
 240                         if (!transient) {
 241                                 if (Path.GetExtension (fileName) == String.Empty)
 242                                         throw new ArgumentException ("Module file name '" + fileName + "' must have file extension.");
 243                                 if (!IsSave)
 244                                         throw new NotSupportedException ("Persistable modules are not supported in a dynamic assembly created with AssemblyBuilderAccess.Run");
 245                                 if (created)
 246                                         throw new InvalidOperationException ("Assembly was already saved.");
 247                         }
 248
 249                         ModuleBuilder r = new ModuleBuilder (this, name, fileName, emitSymbolInfo, transient);
 250
 251                         if ((modules != null) && is_module_only)
 252                                 throw new InvalidOperationException ("A module-only assembly can only contain one module.");
 253
 254                         if (modules != null) {
 255                                 ModuleBuilder[] new_modules = new ModuleBuilder [modules.Length + 1];
 256                                 System.Array.Copy(modules, new_modules, modules.Length);
 257                                 modules = new_modules;
 258                         } else {
 259                                 modules = new ModuleBuilder [1];
 260                         }
 261                         modules [modules.Length - 1] = r;
 262                         return r;
 263                 }
 264
 265                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 266                 private extern Module InternalAddModule (string fileName);
 267
 268                 /*
 269                  * Mono extension to support /addmodule in mcs.
 270                  */
 271                 internal Module AddModule (string fileName)
 272                 {
 273                         if (fileName == null)
 274                                 throw new ArgumentNullException (fileName);
 275
 276                         Module m = InternalAddModule (fileName);
 277
 278                         if (loaded_modules != null) {
 279                                 Module[] new_modules = new Module [loaded_modules.Length + 1];
 280                                 System.Array.Copy (loaded_modules, new_modules, loaded_modules.Length);
 281                                 loaded_modules = new_modules;
 282                         } else {
 283                                 loaded_modules = new Module [1];
 284                         }
 285                         loaded_modules [loaded_modules.Length - 1] = m;
 286
 287                         return m;
 288                 }
 289
 290                 public IResourceWriter DefineResource (string name, string description, string fileName)
 291                 {
 292                         return DefineResource (name, description, fileName, ResourceAttributes.Public);
 293                 }
 294
 295                 public IResourceWriter DefineResource (string name, string description,
 296                                                        string fileName, ResourceAttributes attribute)
 297                 {
 298                         IResourceWriter writer;
 299
 300                         // description seems to be ignored
 301                         AddResourceFile (name, fileName, attribute, false);
 302                         writer = new ResourceWriter (fileName);
 303                         if (resource_writers == null)
 304                                 resource_writers = new ArrayList ();
 305                         resource_writers.Add (writer);
 306                         return writer;
 307                 }
 308
 309                 private void AddUnmanagedResource (Win32Resource res) {
 310                         MemoryStream ms = new MemoryStream ();
 311                         res.WriteTo (ms);
 312
 313                         if (win32_resources != null) {
 314                                 MonoWin32Resource[] new_res = new MonoWin32Resource [win32_resources.Length + 1];
 315                                 System.Array.Copy (win32_resources, new_res, win32_resources.Length);
 316                                 win32_resources = new_res;
 317                         }
 318                         else
 319                                 win32_resources = new MonoWin32Resource [1];
 320
 321                         win32_resources [win32_resources.Length - 1] = new MonoWin32Resource (res.Type.Id, res.Name.Id, res.Language, ms.ToArray ());
 322                 }
 323
 324                 [MonoTODO]
 325                 public void DefineUnmanagedResource (byte[] resource)
 326                 {
 327                         if (resource == null)
 328                                 throw new ArgumentNullException ("resource");
 329
 330                         /*
 331                          * The format of the argument byte array is not documented
 332                          * so this method is impossible to implement.
 333                          */
 334
 335                         throw new NotImplementedException ();
 336                 }
 337
 338                 public void DefineUnmanagedResource (string resourceFileName)
 339                 {
 340                         if (resourceFileName == null)
 341                                 throw new ArgumentNullException ("resourceFileName");
 342                         if (resourceFileName == String.Empty)
 343                                 throw new ArgumentException ("resourceFileName");
 344                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 345                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 346
 347                         using (FileStream fs = new FileStream (resourceFileName, FileMode.Open)) {
 348                                 Win32ResFileReader reader = new Win32ResFileReader (fs);
 349
 350                                 foreach (Win32EncodedResource res in reader.ReadResources ()) {
 351                                         if (res.Name.IsName || res.Type.IsName)
 352                                                 throw new InvalidOperationException ("resource files with named resources or non-default resource types are not supported.");
 353
 354                                         AddUnmanagedResource (res);
 355                                 }
 356                         }
 357                 }
 358
 359                 public void DefineVersionInfoResource ()
 360                 {
 361                         if (version_res != null)
 362                                 throw new ArgumentException ("Native resource has already been defined.");
 363
 364                         version_res = new Win32VersionResource (1, 0);
 365
 366                         if (cattrs != null) {
 367                                 foreach (CustomAttributeBuilder cb in cattrs) {
 368                                         string attrname = cb.Ctor.ReflectedType.FullName;
 369
 370                                         if (attrname == "System.Reflection.AssemblyProductAttribute")
 371                                                 version_res.ProductName = cb.string_arg ();
 372                                         else if (attrname == "System.Reflection.AssemblyCompanyAttribute")
 373                                                 version_res.CompanyName = cb.string_arg ();
 374                                         else if (attrname == "System.Reflection.AssemblyCopyrightAttribute")
 375                                                 version_res.LegalCopyright = cb.string_arg ();
 376                                         else if (attrname == "System.Reflection.AssemblyTrademarkAttribute")
 377                                                 version_res.LegalTrademarks = cb.string_arg ();
 378                                         else if (attrname == "System.Reflection.AssemblyCultureAttribute")
 379                                                 version_res.FileLanguage = new CultureInfo (cb.string_arg ()).LCID;
 380                                         else if (attrname == "System.Reflection.AssemblyFileVersionAttribute")
 381                                                 version_res.FileVersion = cb.string_arg ();
 382                                         else if (attrname == "System.Reflection.AssemblyInformationalVersionAttribute")
 383                                                 version_res.ProductVersion = cb.string_arg ();
 384                                         else if (attrname == "System.Reflection.AssemblyTitleAttribute")
 385                                                 version_res.FileDescription = cb.string_arg ();
 386                                         else if (attrname == "System.Reflection.AssemblyDescriptionAttribute")
 387                                                 version_res.Comments = cb.string_arg ();
 388                                 }
 389                         }
 390                 }
 391
 392                 public void DefineVersionInfoResource (string product, string productVersion,
 393                                                        string company, string copyright, string trademark)
 394                 {
 395                         if (version_res != null)
 396                                 throw new ArgumentException ("Native resource has already been defined.");
 397
 398                         /*
 399                          * We can only create the resource later, when the file name and
 400                          * the binary version is known.
 401                          */
 402
 403                         version_res = new Win32VersionResource (1, 0);
 404                         version_res.ProductName = product;
 405                         version_res.ProductVersion = productVersion;
 406                         version_res.CompanyName = company;
 407                         version_res.LegalCopyright = copyright;
 408                         version_res.LegalTrademarks = trademark;
 409                 }
 410
 411                 /*
 412                  * Mono extension to support /win32icon in mcs
 413                  */
 414                 internal void DefineIconResource (string iconFileName)
 415                 {
 416                         if (iconFileName == null)
 417                                 throw new ArgumentNullException ("iconFileName");
 418                         if (iconFileName == String.Empty)
 419                                 throw new ArgumentException ("iconFileName");
 420                         if (!File.Exists (iconFileName) || Directory.Exists (iconFileName))
 421                                 throw new FileNotFoundException ("File '" + iconFileName + "' does not exists or is a directory.");
 422
 423                         using (FileStream fs = new FileStream (iconFileName, FileMode.Open)) {
 424                                 Win32IconFileReader reader = new Win32IconFileReader (fs);
 425
 426                                 ICONDIRENTRY[] entries = reader.ReadIcons ();
 427
 428                                 Win32IconResource[] icons = new Win32IconResource [entries.Length];
 429                                 for (int i = 0; i < entries.Length; ++i) {
 430                                         icons [i] = new Win32IconResource (i + 1, 0, entries [i]);
 431                                         AddUnmanagedResource (icons [i]);
 432                                 }
 433
 434                                 Win32GroupIconResource group = new Win32GroupIconResource (1, 0, icons);
 435                                 AddUnmanagedResource (group);
 436                         }
 437                 }
 438
 439                 private void DefineVersionInfoResourceImpl (string fileName) {
 440                         // Add missing info
 441                         if (version_res.FileVersion == "0.0.0.0")
 442                                 version_res.FileVersion = version;
 443                         version_res.InternalName = Path.GetFileNameWithoutExtension (fileName);
 444                         version_res.OriginalFilename = fileName;
 445
 446                         AddUnmanagedResource (version_res);
 447                 }
 448
 449                 public ModuleBuilder GetDynamicModule (string name)
 450                 {
 451                         if (name == null)
 452                                 throw new ArgumentNullException ("name");
 453                         if (name == "")
 454                                 throw new ArgumentException ("Name can't be null");
 455
 456                         if (modules != null)
 457                                 for (int i = 0; i < modules.Length; ++i)
 458                                         if (modules [i].name == name)
 459                                                 return modules [i];
 460                         return null;
 461                 }
 462
 463                 public override Type[] GetExportedTypes ()
 464                 {
 465                         throw not_supported ();
 466                 }
 467
 468                 public override FileStream GetFile (string name)
 469                 {
 470                         throw not_supported ();
 471                 }
 472
 473                 public override FileStream[] GetFiles(bool getResourceModules) {
 474                         throw not_supported ();
 475                 }
 476
 477                 public override ManifestResourceInfo GetManifestResourceInfo(string resourceName) {
 478                         throw not_supported ();
 479                 }
 480
 481                 public override string[] GetManifestResourceNames() {
 482                         throw not_supported ();
 483                 }
 484
 485                 public override Stream GetManifestResourceStream(string name) {
 486                         throw not_supported ();
 487                 }
 488                 public override Stream GetManifestResourceStream(Type type, string name) {
 489                         throw not_supported ();
 490                 }
 491
 492                 internal bool IsSave {
 493                         get {
 494                                 return access != (uint)AssemblyBuilderAccess.Run;
 495                         }
 496                 }
 497
 498                 internal string AssemblyDir {
 499                         get {
 500                                 return dir;
 501                         }
 502                 }
 503
 504                 /*
 505                  * Mono extension. If this is set, the assembly can only contain one
 506                  * module, access should be Save, and the saved image will not contain an
 507                  * assembly manifest.
 508                  */
 509                 internal bool IsModuleOnly {
 510                         get {
 511                                 return is_module_only;
 512                         }
 513                         set {
 514                                 is_module_only = value;
 515                         }
 516                 }
 517
 518                 public void Save (string assemblyFileName)
 519                 {
 520                         if (resource_writers != null) {
 521                                 foreach (IResourceWriter writer in resource_writers) {
 522                                         writer.Generate ();
 523                                         writer.Close ();
 524                                 }
 525                         }
 526
 527                         // Create a main module if not already created
 528                         ModuleBuilder mainModule = null;
 529                         if (modules != null) {
 530                                 foreach (ModuleBuilder module in modules)
 531                                         if (module.FullyQualifiedName == assemblyFileName)
 532                                                 mainModule = module;
 533                         }
 534                         if (mainModule == null)
 535                                 mainModule = DefineDynamicModule ("RefEmit_OnDiskManifestModule", assemblyFileName);
 536
 537                         if (!is_module_only)
 538                                 mainModule.IsMain = true;
 539
 540                         /*
 541                          * Create a new entry point if the one specified
 542                          * by the user is in another module.
 543                          */
 544                         if ((entry_point != null) && entry_point.DeclaringType.Module != mainModule) {
 545                                 Type[] paramTypes;
 546                                 if (entry_point.GetParameters ().Length == 1)
 547                                         paramTypes = new Type [] { typeof (string) };
 548                                 else
 549                                         paramTypes = new Type [0];
 550
 551                                 MethodBuilder mb = mainModule.DefineGlobalMethod ("__EntryPoint$", MethodAttributes.Static|MethodAttributes.PrivateScope, entry_point.ReturnType, paramTypes);
 552                                 ILGenerator ilgen = mb.GetILGenerator ();
 553                                 if (paramTypes.Length == 1)
 554                                         ilgen.Emit (OpCodes.Ldarg_0);
 555                                 ilgen.Emit (OpCodes.Tailcall);
 556                                 ilgen.Emit (OpCodes.Call, entry_point);
 557                                 ilgen.Emit (OpCodes.Ret);
 558
 559                                 entry_point = mb;
 560                         }
 561
 562                         if (version_res != null)
 563                                 DefineVersionInfoResourceImpl (assemblyFileName);
 564
 565                         foreach (ModuleBuilder module in modules)
 566                                 if (module != mainModule)
 567                                         module.Save ();
 568
 569                         // Write out the main module at the end, because it needs to
 570                         // contain the hash of the other modules
 571                         mainModule.Save ();
 572
 573                         created = true;
 574                 }
 575
 576                 public void SetEntryPoint (MethodInfo entryMethod)
 577                 {
 578                         SetEntryPoint (entryMethod, PEFileKinds.ConsoleApplication);
 579                 }
 580
 581                 public void SetEntryPoint (MethodInfo entryMethod, PEFileKinds fileKind)
 582                 {
 583                         if (entryMethod == null)
 584                                 throw new ArgumentNullException ("entryMethod");
 585                         if (entryMethod.DeclaringType.Assembly != this)
 586                                 throw new InvalidOperationException ("Entry method is not defined in the same assembly.");
 587
 588                         entry_point = entryMethod;
 589                         pekind = fileKind;
 590                 }
 591
 592                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder)
 593                 {
 594                         if (customBuilder == null)
 595                                 throw new ArgumentNullException ("customBuilder");
 596
 597                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 598                         byte[] data;
 599                         int len, pos;
 600                         Mono.Security.StrongName sn;
 601                         if (attrname == "System.Reflection.AssemblyVersionAttribute") {
 602                                 version = create_assembly_version (customBuilder.string_arg ());
 603                                 return;
 604                         } else if (attrname == "System.Reflection.AssemblyKeyFileAttribute") {
 605                                 string keyfile_name = customBuilder.string_arg ();
 606                                 if (keyfile_name == String.Empty)
 607                                         return;
 608                                 using (FileStream fs = new FileStream (keyfile_name, FileMode.Open)) {
 609                                         byte[] snkeypair = new byte [fs.Length];
 610                                         fs.Read (snkeypair, 0, snkeypair.Length);
 611
 612                                         // this will import public or private/public keys
 613                                         RSA rsa = CryptoConvert.FromCapiKeyBlob (snkeypair);
 614                                         // and export only the public part
 615                                         sn = new Mono.Security.StrongName (rsa);
 616                                         public_key = sn.PublicKey;
 617                                 }
 618                                 return;
 619                         } else if (attrname == "System.Reflection.AssemblyKeyNameAttribute") {
 620                                 string key_name = customBuilder.string_arg ();
 621                                 if (key_name == String.Empty)
 622                                         return;
 623                                 CspParameters csparam = new CspParameters ();
 624                                 csparam.KeyContainerName = key_name;
 625                                 RSA rsacsp = new RSACryptoServiceProvider (csparam);
 626                                 sn = new Mono.Security.StrongName (rsacsp);
 627                                 public_key = sn.PublicKey;
 628                                 return;
 629                         } else if (attrname == "System.Reflection.AssemblyCultureAttribute") {
 630                                 culture = customBuilder.string_arg ();
 631                         } else if (attrname == "System.Reflection.AssemblyAlgorithmIdAttribute") {
 632                                 data = customBuilder.Data;
 633                                 pos = 2;
 634                                 algid = (uint)data [pos];
 635                                 algid |= ((uint)data [pos + 1]) << 8;
 636                                 algid |= ((uint)data [pos + 2]) << 16;
 637                                 algid |= ((uint)data [pos + 3]) << 24;
 638                         } else if (attrname == "System.Reflection.AssemblyFlagsAttribute") {
 639                                 data = customBuilder.Data;
 640                                 pos = 2;
 641                                 flags = (uint)data [pos];
 642                                 flags |= ((uint)data [pos + 1]) << 8;
 643                                 flags |= ((uint)data [pos + 2]) << 16;
 644                                 flags |= ((uint)data [pos + 3]) << 24;
 645                                 return;
 646                         } else if (attrname == "System.Reflection.AssemblyDelaySignAttribute") {
 647                                 data = customBuilder.Data;
 648                                 pos = 2;
 649                                 delay_sign = data [2] != 0;
 650                         }
 651                         if (cattrs != null) {
 652                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 653                                 cattrs.CopyTo (new_array, 0);
 654                                 new_array [cattrs.Length] = customBuilder;
 655                                 cattrs = new_array;
 656                         } else {
 657                                 cattrs = new CustomAttributeBuilder [1];
 658                                 cattrs [0] = customBuilder;
 659                         }
 660                 }
 661                 public void SetCustomAttribute ( ConstructorInfo con, byte[] binaryAttribute) {
 662                         if (con == null)
 663                                 throw new ArgumentNullException ("con");
 664                         if (binaryAttribute == null)
 665                                 throw new ArgumentNullException ("binaryAttribute");
 666
 667                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 668                 }
 669
 670                 public void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type) {
 671                         this.corlib_object_type = corlib_object_type;
 672                         this.corlib_value_type = corlib_value_type;
 673                         this.corlib_enum_type = corlib_enum_type;
 674                 }
 675
 676                 public void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type, Type corlib_void_type)
 677                 {
 678                         SetCorlibTypeBuilders (corlib_object_type, corlib_value_type, corlib_enum_type);
 679                         this.corlib_void_type = corlib_void_type;
 680                 }
 681
 682                 private Exception not_supported () {
 683                         // Strange message but this is what MS.NET prints...
 684                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 685                 }
 686
 687                 private void check_name_and_filename (string name, string fileName,
 688                                                                                           bool fileNeedsToExists) {
 689                         if (name == null)
 690                                 throw new ArgumentNullException ("name");
 691                         if (fileName == null)
 692                                 throw new ArgumentNullException ("fileName");
 693                         if (name == "")
 694                                 throw new ArgumentException ("name cannot be empty", "name");
 695                         if (fileName == "")
 696                                 throw new ArgumentException ("fileName cannot be empty", "fileName");
 697                         if (Path.GetFileName (fileName) != fileName)
 698                                 throw new ArgumentException ("fileName '" + fileName + "' must not include a path.");
 699
 700                         // Resource files are created/searched under the assembly storage
 701                         // directory
 702                         string fullFileName = fileName;
 703                         if (dir != null)
 704                                 fullFileName = Path.Combine (dir, fileName);
 705
 706                         if (fileNeedsToExists && !File.Exists (fullFileName))
 707                                 throw new FileNotFoundException ("Could not find file '" + fileName + "'");
 708
 709                         if (resources != null) {
 710                                 for (int i = 0; i < resources.Length; ++i) {
 711                                         if (resources [i].filename == fullFileName)
 712                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 713                                         if (resources [i].name == name)
 714                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 715                                 }
 716                         }
 717
 718                         if (modules != null) {
 719                                 for (int i = 0; i < modules.Length; ++i) {
 720                                         // Use fileName instead of fullFileName here
 721                                         if (!modules [i].IsTransient () && (modules [i].FileName == fileName))
 722                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 723                                         if (modules [i].Name == name)
 724                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 725                                 }
 726                         }
 727                 }
 728
 729                 private String create_assembly_version (String version) {
 730                         String[] parts = version.Split ('.');
 731                         int[] ver = new int [4] { 0, 0, 0, 0 };
 732
 733                         if ((parts.Length < 0) || (parts.Length > 4))
 734                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 735
 736                         for (int i = 0; i < parts.Length; ++i) {
 737                                 if (parts [i] == "*") {
 738                                         DateTime now = DateTime.Now;
 739
 740                                         if (i == 2) {
 741                                                 ver [2] = (now - new DateTime (2000, 1, 1)).Days;
 742                                                 if (parts.Length == 3)
 743                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 744                                         }
 745                                         else
 746                                                 if (i == 3)
 747                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 748                                         else
 749                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 750                                 }
 751                                 else {
 752                                         try {
 753                                                 ver [i] = Int32.Parse (parts [i]);
 754                                         }
 755                                         catch (FormatException) {
 756                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 757                                         }
 758                                 }
 759                         }
 760
 761                         return ver [0] + "." + ver [1] + "." + ver [2] + "." + ver [3];
 762                 }
 763         }
 764 }