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                 private Mono.Security.StrongName sn;
  89
  90                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
  91                 private static extern void basic_init (AssemblyBuilder ab);
  92
  93                 internal AssemblyBuilder (AssemblyName n, string directory, AssemblyBuilderAccess access) {
  94                         name = n.Name;
  95                         if (directory == null || directory == String.Empty)
  96                                 dir = Directory.GetCurrentDirectory ();
  97                         else
  98                                 dir = directory;
  99                         this.access = (uint)access;
 100
 101                         /* Set defaults from n */
 102                         if (n.CultureInfo != null) {
 103                                 culture = n.CultureInfo.Name;
 104                         }
 105                         Version v = n.Version;
 106                         if (v != null) {
 107                                 version = v.ToString ();
 108                         }
 109
 110                         basic_init (this);
 111                 }
 112
 113                 public override string CodeBase {
 114                         get {
 115                                 throw not_supported ();
 116                         }
 117                 }
 118
 119                 public override MethodInfo EntryPoint {
 120                         get {
 121                                 return entry_point;
 122                         }
 123                 }
 124
 125                 public override string Location {
 126                         get {
 127                                 throw not_supported ();
 128                         }
 129                 }
 130
 131 #if NET_1_1
 132                 /* This is to keep signature compatibility with MS.NET */
 133                 public override string ImageRuntimeVersion {
 134                         get {
 135                                 return base.ImageRuntimeVersion;
 136                         }
 137                 }
 138 #endif
 139
 140                 public void AddResourceFile (string name, string fileName)
 141                 {
 142                         AddResourceFile (name, fileName, ResourceAttributes.Public);
 143                 }
 144
 145                 public void AddResourceFile (string name, string fileName, ResourceAttributes attribute)
 146                 {
 147                         AddResourceFile (name, fileName, attribute, true);
 148                 }
 149
 150                 private void AddResourceFile (string name, string fileName, ResourceAttributes attribute, bool fileNeedsToExists)
 151                 {
 152                         check_name_and_filename (name, fileName, fileNeedsToExists);
 153
 154                         // Resource files are created/searched under the assembly storage
 155                         // directory
 156                         if (dir != null)
 157                                 fileName = Path.Combine (dir, fileName);
 158
 159                         if (resources != null) {
 160                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 161                                 System.Array.Copy(resources, new_r, resources.Length);
 162                                 resources = new_r;
 163                         } else {
 164                                 resources = new MonoResource [1];
 165                         }
 166                         int p = resources.Length - 1;
 167                         resources [p].name = name;
 168                         resources [p].filename = fileName;
 169                         resources [p].attrs = attribute;
 170                 }
 171
 172                 public void EmbedResourceFile (string name, string fileName)
 173                 {
 174                         EmbedResourceFile (name, fileName, ResourceAttributes.Public);
 175                 }
 176
 177                 public void EmbedResourceFile (string name, string fileName, ResourceAttributes attribute)
 178                 {
 179                         if (resources != null) {
 180                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 181                                 System.Array.Copy(resources, new_r, resources.Length);
 182                                 resources = new_r;
 183                         } else {
 184                                 resources = new MonoResource [1];
 185                         }
 186                         int p = resources.Length - 1;
 187                         resources [p].name = name;
 188                         resources [p].attrs = attribute;
 189                         try {
 190                                 FileStream s = new FileStream (fileName, FileMode.Open, FileAccess.Read);
 191                                 long len = s.Length;
 192                                 resources [p].data = new byte [len];
 193                                 s.Read (resources [p].data, 0, (int)len);
 194                                 s.Close ();
 195                         } catch {
 196                                 /* do something */
 197                         }
 198                 }
 199
 200                 internal void EmbedResource (string name, byte[] blob, ResourceAttributes attribute)
 201                 {
 202                         if (resources != null) {
 203                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 204                                 System.Array.Copy(resources, new_r, resources.Length);
 205                                 resources = new_r;
 206                         } else {
 207                                 resources = new MonoResource [1];
 208                         }
 209                         int p = resources.Length - 1;
 210                         resources [p].name = name;
 211                         resources [p].attrs = attribute;
 212                         resources [p].data = blob;
 213                 }
 214
 215                 public ModuleBuilder DefineDynamicModule (string name)
 216                 {
 217                         return DefineDynamicModule (name, name, false, true);
 218                 }
 219
 220                 public ModuleBuilder DefineDynamicModule (string name, bool emitSymbolInfo)
 221                 {
 222                         return DefineDynamicModule (name, name, emitSymbolInfo, true);
 223                 }
 224
 225                 public ModuleBuilder DefineDynamicModule(string name, string fileName)
 226                 {
 227                         return DefineDynamicModule (name, fileName, false, false);
 228                 }
 229
 230                 public ModuleBuilder DefineDynamicModule (string name, string fileName,
 231                                                           bool emitSymbolInfo)
 232                 {
 233                         return DefineDynamicModule (name, fileName, emitSymbolInfo, false);
 234                 }
 235
 236                 private ModuleBuilder DefineDynamicModule (string name, string fileName,
 237                                                                                                    bool emitSymbolInfo, bool transient)
 238                 {
 239                         check_name_and_filename (name, fileName, false);
 240
 241                         if (!transient) {
 242                                 if (Path.GetExtension (fileName) == String.Empty)
 243                                         throw new ArgumentException ("Module file name '" + fileName + "' must have file extension.");
 244                                 if (!IsSave)
 245                                         throw new NotSupportedException ("Persistable modules are not supported in a dynamic assembly created with AssemblyBuilderAccess.Run");
 246                                 if (created)
 247                                         throw new InvalidOperationException ("Assembly was already saved.");
 248                         }
 249
 250                         ModuleBuilder r = new ModuleBuilder (this, name, fileName, emitSymbolInfo, transient);
 251
 252                         if ((modules != null) && is_module_only)
 253                                 throw new InvalidOperationException ("A module-only assembly can only contain one module.");
 254
 255                         if (modules != null) {
 256                                 ModuleBuilder[] new_modules = new ModuleBuilder [modules.Length + 1];
 257                                 System.Array.Copy(modules, new_modules, modules.Length);
 258                                 modules = new_modules;
 259                         } else {
 260                                 modules = new ModuleBuilder [1];
 261                         }
 262                         modules [modules.Length - 1] = r;
 263                         return r;
 264                 }
 265
 266                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 267                 private extern Module InternalAddModule (string fileName);
 268
 269                 /*
 270                  * Mono extension to support /addmodule in mcs.
 271                  */
 272                 internal Module AddModule (string fileName)
 273                 {
 274                         if (fileName == null)
 275                                 throw new ArgumentNullException (fileName);
 276
 277                         Module m = InternalAddModule (fileName);
 278
 279                         if (loaded_modules != null) {
 280                                 Module[] new_modules = new Module [loaded_modules.Length + 1];
 281                                 System.Array.Copy (loaded_modules, new_modules, loaded_modules.Length);
 282                                 loaded_modules = new_modules;
 283                         } else {
 284                                 loaded_modules = new Module [1];
 285                         }
 286                         loaded_modules [loaded_modules.Length - 1] = m;
 287
 288                         return m;
 289                 }
 290
 291                 public IResourceWriter DefineResource (string name, string description, string fileName)
 292                 {
 293                         return DefineResource (name, description, fileName, ResourceAttributes.Public);
 294                 }
 295
 296                 public IResourceWriter DefineResource (string name, string description,
 297                                                        string fileName, ResourceAttributes attribute)
 298                 {
 299                         IResourceWriter writer;
 300
 301                         // description seems to be ignored
 302                         AddResourceFile (name, fileName, attribute, false);
 303                         writer = new ResourceWriter (fileName);
 304                         if (resource_writers == null)
 305                                 resource_writers = new ArrayList ();
 306                         resource_writers.Add (writer);
 307                         return writer;
 308                 }
 309
 310                 private void AddUnmanagedResource (Win32Resource res) {
 311                         MemoryStream ms = new MemoryStream ();
 312                         res.WriteTo (ms);
 313
 314                         if (win32_resources != null) {
 315                                 MonoWin32Resource[] new_res = new MonoWin32Resource [win32_resources.Length + 1];
 316                                 System.Array.Copy (win32_resources, new_res, win32_resources.Length);
 317                                 win32_resources = new_res;
 318                         }
 319                         else
 320                                 win32_resources = new MonoWin32Resource [1];
 321
 322                         win32_resources [win32_resources.Length - 1] = new MonoWin32Resource (res.Type.Id, res.Name.Id, res.Language, ms.ToArray ());
 323                 }
 324
 325                 [MonoTODO]
 326                 public void DefineUnmanagedResource (byte[] resource)
 327                 {
 328                         if (resource == null)
 329                                 throw new ArgumentNullException ("resource");
 330
 331                         /*
 332                          * The format of the argument byte array is not documented
 333                          * so this method is impossible to implement.
 334                          */
 335
 336                         throw new NotImplementedException ();
 337                 }
 338
 339                 public void DefineUnmanagedResource (string resourceFileName)
 340                 {
 341                         if (resourceFileName == null)
 342                                 throw new ArgumentNullException ("resourceFileName");
 343                         if (resourceFileName == String.Empty)
 344                                 throw new ArgumentException ("resourceFileName");
 345                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 346                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 347
 348                         using (FileStream fs = new FileStream (resourceFileName, FileMode.Open)) {
 349                                 Win32ResFileReader reader = new Win32ResFileReader (fs);
 350
 351                                 foreach (Win32EncodedResource res in reader.ReadResources ()) {
 352                                         if (res.Name.IsName || res.Type.IsName)
 353                                                 throw new InvalidOperationException ("resource files with named resources or non-default resource types are not supported.");
 354
 355                                         AddUnmanagedResource (res);
 356                                 }
 357                         }
 358                 }
 359
 360                 public void DefineVersionInfoResource ()
 361                 {
 362                         if (version_res != null)
 363                                 throw new ArgumentException ("Native resource has already been defined.");
 364
 365                         version_res = new Win32VersionResource (1, 0);
 366
 367                         if (cattrs != null) {
 368                                 foreach (CustomAttributeBuilder cb in cattrs) {
 369                                         string attrname = cb.Ctor.ReflectedType.FullName;
 370
 371                                         if (attrname == "System.Reflection.AssemblyProductAttribute")
 372                                                 version_res.ProductName = cb.string_arg ();
 373                                         else if (attrname == "System.Reflection.AssemblyCompanyAttribute")
 374                                                 version_res.CompanyName = cb.string_arg ();
 375                                         else if (attrname == "System.Reflection.AssemblyCopyrightAttribute")
 376                                                 version_res.LegalCopyright = cb.string_arg ();
 377                                         else if (attrname == "System.Reflection.AssemblyTrademarkAttribute")
 378                                                 version_res.LegalTrademarks = cb.string_arg ();
 379                                         else if (attrname == "System.Reflection.AssemblyCultureAttribute")
 380                                                 version_res.FileLanguage = new CultureInfo (cb.string_arg ()).LCID;
 381                                         else if (attrname == "System.Reflection.AssemblyFileVersionAttribute")
 382                                                 version_res.FileVersion = cb.string_arg ();
 383                                         else if (attrname == "System.Reflection.AssemblyInformationalVersionAttribute")
 384                                                 version_res.ProductVersion = cb.string_arg ();
 385                                         else if (attrname == "System.Reflection.AssemblyTitleAttribute")
 386                                                 version_res.FileDescription = cb.string_arg ();
 387                                         else if (attrname == "System.Reflection.AssemblyDescriptionAttribute")
 388                                                 version_res.Comments = cb.string_arg ();
 389                                 }
 390                         }
 391                 }
 392
 393                 public void DefineVersionInfoResource (string product, string productVersion,
 394                                                        string company, string copyright, string trademark)
 395                 {
 396                         if (version_res != null)
 397                                 throw new ArgumentException ("Native resource has already been defined.");
 398
 399                         /*
 400                          * We can only create the resource later, when the file name and
 401                          * the binary version is known.
 402                          */
 403
 404                         version_res = new Win32VersionResource (1, 0);
 405                         version_res.ProductName = product;
 406                         version_res.ProductVersion = productVersion;
 407                         version_res.CompanyName = company;
 408                         version_res.LegalCopyright = copyright;
 409                         version_res.LegalTrademarks = trademark;
 410                 }
 411
 412                 /*
 413                  * Mono extension to support /win32icon in mcs
 414                  */
 415                 internal void DefineIconResource (string iconFileName)
 416                 {
 417                         if (iconFileName == null)
 418                                 throw new ArgumentNullException ("iconFileName");
 419                         if (iconFileName == String.Empty)
 420                                 throw new ArgumentException ("iconFileName");
 421                         if (!File.Exists (iconFileName) || Directory.Exists (iconFileName))
 422                                 throw new FileNotFoundException ("File '" + iconFileName + "' does not exists or is a directory.");
 423
 424                         using (FileStream fs = new FileStream (iconFileName, FileMode.Open)) {
 425                                 Win32IconFileReader reader = new Win32IconFileReader (fs);
 426
 427                                 ICONDIRENTRY[] entries = reader.ReadIcons ();
 428
 429                                 Win32IconResource[] icons = new Win32IconResource [entries.Length];
 430                                 for (int i = 0; i < entries.Length; ++i) {
 431                                         icons [i] = new Win32IconResource (i + 1, 0, entries [i]);
 432                                         AddUnmanagedResource (icons [i]);
 433                                 }
 434
 435                                 Win32GroupIconResource group = new Win32GroupIconResource (1, 0, icons);
 436                                 AddUnmanagedResource (group);
 437                         }
 438                 }
 439
 440                 private void DefineVersionInfoResourceImpl (string fileName) {
 441                         // Add missing info
 442                         if (version_res.FileVersion == "0.0.0.0")
 443                                 version_res.FileVersion = version;
 444                         version_res.InternalName = Path.GetFileNameWithoutExtension (fileName);
 445                         version_res.OriginalFilename = fileName;
 446
 447                         AddUnmanagedResource (version_res);
 448                 }
 449
 450                 public ModuleBuilder GetDynamicModule (string name)
 451                 {
 452                         if (name == null)
 453                                 throw new ArgumentNullException ("name");
 454                         if (name == "")
 455                                 throw new ArgumentException ("Name can't be null");
 456
 457                         if (modules != null)
 458                                 for (int i = 0; i < modules.Length; ++i)
 459                                         if (modules [i].name == name)
 460                                                 return modules [i];
 461                         return null;
 462                 }
 463
 464                 public override Type[] GetExportedTypes ()
 465                 {
 466                         throw not_supported ();
 467                 }
 468
 469                 public override FileStream GetFile (string name)
 470                 {
 471                         throw not_supported ();
 472                 }
 473
 474                 public override FileStream[] GetFiles() {
 475                         throw not_supported ();
 476                 }
 477
 478                 public override FileStream[] GetFiles(bool getResourceModules) {
 479                         throw not_supported ();
 480                 }
 481
 482                 public override ManifestResourceInfo GetManifestResourceInfo(string resourceName) {
 483                         throw not_supported ();
 484                 }
 485
 486                 public override string[] GetManifestResourceNames() {
 487                         throw not_supported ();
 488                 }
 489
 490                 public override Stream GetManifestResourceStream(string name) {
 491                         throw not_supported ();
 492                 }
 493                 public override Stream GetManifestResourceStream(Type type, string name) {
 494                         throw not_supported ();
 495                 }
 496
 497                 internal bool IsSave {
 498                         get {
 499                                 return access != (uint)AssemblyBuilderAccess.Run;
 500                         }
 501                 }
 502
 503                 internal string AssemblyDir {
 504                         get {
 505                                 return dir;
 506                         }
 507                 }
 508
 509                 /*
 510                  * Mono extension. If this is set, the assembly can only contain one
 511                  * module, access should be Save, and the saved image will not contain an
 512                  * assembly manifest.
 513                  */
 514                 internal bool IsModuleOnly {
 515                         get {
 516                                 return is_module_only;
 517                         }
 518                         set {
 519                                 is_module_only = value;
 520                         }
 521                 }
 522
 523                 public void Save (string assemblyFileName)
 524                 {
 525                         if (resource_writers != null) {
 526                                 foreach (IResourceWriter writer in resource_writers) {
 527                                         writer.Generate ();
 528                                         writer.Close ();
 529                                 }
 530                         }
 531
 532                         // Create a main module if not already created
 533                         ModuleBuilder mainModule = null;
 534                         if (modules != null) {
 535                                 foreach (ModuleBuilder module in modules)
 536                                         if (module.FullyQualifiedName == assemblyFileName)
 537                                                 mainModule = module;
 538                         }
 539                         if (mainModule == null)
 540                                 mainModule = DefineDynamicModule ("RefEmit_OnDiskManifestModule", assemblyFileName);
 541
 542                         if (!is_module_only)
 543                                 mainModule.IsMain = true;
 544
 545                         /*
 546                          * Create a new entry point if the one specified
 547                          * by the user is in another module.
 548                          */
 549                         if ((entry_point != null) && entry_point.DeclaringType.Module != mainModule) {
 550                                 Type[] paramTypes;
 551                                 if (entry_point.GetParameters ().Length == 1)
 552                                         paramTypes = new Type [] { typeof (string) };
 553                                 else
 554                                         paramTypes = new Type [0];
 555
 556                                 MethodBuilder mb = mainModule.DefineGlobalMethod ("__EntryPoint$", MethodAttributes.Static|MethodAttributes.PrivateScope, entry_point.ReturnType, paramTypes);
 557                                 ILGenerator ilgen = mb.GetILGenerator ();
 558                                 if (paramTypes.Length == 1)
 559                                         ilgen.Emit (OpCodes.Ldarg_0);
 560                                 ilgen.Emit (OpCodes.Tailcall);
 561                                 ilgen.Emit (OpCodes.Call, entry_point);
 562                                 ilgen.Emit (OpCodes.Ret);
 563
 564                                 entry_point = mb;
 565                         }
 566
 567                         if (version_res != null)
 568                                 DefineVersionInfoResourceImpl (assemblyFileName);
 569
 570                         foreach (ModuleBuilder module in modules)
 571                                 if (module != mainModule)
 572                                         module.Save ();
 573
 574                         // Write out the main module at the end, because it needs to
 575                         // contain the hash of the other modules
 576                         mainModule.Save ();
 577
 578                         // if not delayed then we directly strongname the assembly
 579                         if ((sn != null) && (!delay_sign)) {
 580                                 sn.Sign (System.IO.Path.Combine (this.AssemblyDir, assemblyFileName));
 581                         }
 582
 583                         created = true;
 584                 }
 585
 586                 public void SetEntryPoint (MethodInfo entryMethod)
 587                 {
 588                         SetEntryPoint (entryMethod, PEFileKinds.ConsoleApplication);
 589                 }
 590
 591                 public void SetEntryPoint (MethodInfo entryMethod, PEFileKinds fileKind)
 592                 {
 593                         if (entryMethod == null)
 594                                 throw new ArgumentNullException ("entryMethod");
 595                         if (entryMethod.DeclaringType.Assembly != this)
 596                                 throw new InvalidOperationException ("Entry method is not defined in the same assembly.");
 597
 598                         entry_point = entryMethod;
 599                         pekind = fileKind;
 600                 }
 601
 602                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder)
 603                 {
 604                         if (customBuilder == null)
 605                                 throw new ArgumentNullException ("customBuilder");
 606
 607                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 608                         byte[] data;
 609                         int len, pos;
 610
 611                         if (attrname == "System.Reflection.AssemblyVersionAttribute") {
 612                                 version = create_assembly_version (customBuilder.string_arg ());
 613                                 return;
 614                         } else if (attrname == "System.Reflection.AssemblyKeyFileAttribute") {
 615                                 string keyfile_name = customBuilder.string_arg ();
 616                                 if (keyfile_name == String.Empty)
 617                                         return;
 618                                 using (FileStream fs = new FileStream (keyfile_name, FileMode.Open)) {
 619                                         byte[] snkeypair = new byte [fs.Length];
 620                                         fs.Read (snkeypair, 0, snkeypair.Length);
 621
 622                                         // this will import public or private/public keys
 623                                         RSA rsa = CryptoConvert.FromCapiKeyBlob (snkeypair);
 624                                         // and export only the public part
 625                                         sn = new Mono.Security.StrongName (rsa);
 626                                         public_key = sn.PublicKey;
 627                                 }
 628                                 return;
 629                         } else if (attrname == "System.Reflection.AssemblyKeyNameAttribute") {
 630                                 string key_name = customBuilder.string_arg ();
 631                                 if (key_name == String.Empty)
 632                                         return;
 633                                 CspParameters csparam = new CspParameters ();
 634                                 csparam.KeyContainerName = key_name;
 635                                 RSA rsacsp = new RSACryptoServiceProvider (csparam);
 636                                 sn = new Mono.Security.StrongName (rsacsp);
 637                                 public_key = sn.PublicKey;
 638                                 return;
 639                         } else if (attrname == "System.Reflection.AssemblyCultureAttribute") {
 640                                 culture = customBuilder.string_arg ();
 641                         } else if (attrname == "System.Reflection.AssemblyAlgorithmIdAttribute") {
 642                                 data = customBuilder.Data;
 643                                 pos = 2;
 644                                 algid = (uint)data [pos];
 645                                 algid |= ((uint)data [pos + 1]) << 8;
 646                                 algid |= ((uint)data [pos + 2]) << 16;
 647                                 algid |= ((uint)data [pos + 3]) << 24;
 648                         } else if (attrname == "System.Reflection.AssemblyFlagsAttribute") {
 649                                 data = customBuilder.Data;
 650                                 pos = 2;
 651                                 flags = (uint)data [pos];
 652                                 flags |= ((uint)data [pos + 1]) << 8;
 653                                 flags |= ((uint)data [pos + 2]) << 16;
 654                                 flags |= ((uint)data [pos + 3]) << 24;
 655                                 return;
 656                         } else if (attrname == "System.Reflection.AssemblyDelaySignAttribute") {
 657                                 data = customBuilder.Data;
 658                                 pos = 2;
 659                                 delay_sign = data [2] != 0;
 660                         }
 661                         if (cattrs != null) {
 662                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 663                                 cattrs.CopyTo (new_array, 0);
 664                                 new_array [cattrs.Length] = customBuilder;
 665                                 cattrs = new_array;
 666                         } else {
 667                                 cattrs = new CustomAttributeBuilder [1];
 668                                 cattrs [0] = customBuilder;
 669                         }
 670                 }
 671                 public void SetCustomAttribute ( ConstructorInfo con, byte[] binaryAttribute) {
 672                         if (con == null)
 673                                 throw new ArgumentNullException ("con");
 674                         if (binaryAttribute == null)
 675                                 throw new ArgumentNullException ("binaryAttribute");
 676
 677                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 678                 }
 679
 680                 public void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type) {
 681                         this.corlib_object_type = corlib_object_type;
 682                         this.corlib_value_type = corlib_value_type;
 683                         this.corlib_enum_type = corlib_enum_type;
 684                 }
 685
 686                 public void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type, Type corlib_void_type)
 687                 {
 688                         SetCorlibTypeBuilders (corlib_object_type, corlib_value_type, corlib_enum_type);
 689                         this.corlib_void_type = corlib_void_type;
 690                 }
 691
 692                 private Exception not_supported () {
 693                         // Strange message but this is what MS.NET prints...
 694                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 695                 }
 696
 697                 private void check_name_and_filename (string name, string fileName,
 698                                                                                           bool fileNeedsToExists) {
 699                         if (name == null)
 700                                 throw new ArgumentNullException ("name");
 701                         if (fileName == null)
 702                                 throw new ArgumentNullException ("fileName");
 703                         if (name == "")
 704                                 throw new ArgumentException ("name cannot be empty", "name");
 705                         if (fileName == "")
 706                                 throw new ArgumentException ("fileName cannot be empty", "fileName");
 707                         if (Path.GetFileName (fileName) != fileName)
 708                                 throw new ArgumentException ("fileName '" + fileName + "' must not include a path.");
 709
 710                         // Resource files are created/searched under the assembly storage
 711                         // directory
 712                         string fullFileName = fileName;
 713                         if (dir != null)
 714                                 fullFileName = Path.Combine (dir, fileName);
 715
 716                         if (fileNeedsToExists && !File.Exists (fullFileName))
 717                                 throw new FileNotFoundException ("Could not find file '" + fileName + "'");
 718
 719                         if (resources != null) {
 720                                 for (int i = 0; i < resources.Length; ++i) {
 721                                         if (resources [i].filename == fullFileName)
 722                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 723                                         if (resources [i].name == name)
 724                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 725                                 }
 726                         }
 727
 728                         if (modules != null) {
 729                                 for (int i = 0; i < modules.Length; ++i) {
 730                                         // Use fileName instead of fullFileName here
 731                                         if (!modules [i].IsTransient () && (modules [i].FileName == fileName))
 732                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 733                                         if (modules [i].Name == name)
 734                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 735                                 }
 736                         }
 737                 }
 738
 739                 private String create_assembly_version (String version) {
 740                         String[] parts = version.Split ('.');
 741                         int[] ver = new int [4] { 0, 0, 0, 0 };
 742
 743                         if ((parts.Length < 0) || (parts.Length > 4))
 744                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 745
 746                         for (int i = 0; i < parts.Length; ++i) {
 747                                 if (parts [i] == "*") {
 748                                         DateTime now = DateTime.Now;
 749
 750                                         if (i == 2) {
 751                                                 ver [2] = (now - new DateTime (2000, 1, 1)).Days;
 752                                                 if (parts.Length == 3)
 753                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 754                                         }
 755                                         else
 756                                                 if (i == 3)
 757                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 758                                         else
 759                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 760                                 }
 761                                 else {
 762                                         try {
 763                                                 ver [i] = Int32.Parse (parts [i]);
 764                                         }
 765                                         catch (FormatException) {
 766                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 767                                         }
 768                                 }
 769                         }
 770
 771                         return ver [0] + "." + ver [1] + "." + ver [2] + "." + ver [3];
 772                 }
 773         }
 774 }