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 //
  11 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  12 //
  13 // Permission is hereby granted, free of charge, to any person obtaining
  14 // a copy of this software and associated documentation files (the
  15 // "Software"), to deal in the Software without restriction, including
  16 // without limitation the rights to use, copy, modify, merge, publish,
  17 // distribute, sublicense, and/or sell copies of the Software, and to
  18 // permit persons to whom the Software is furnished to do so, subject to
  19 // the following conditions:
  20 //
  21 // The above copyright notice and this permission notice shall be
  22 // included in all copies or substantial portions of the Software.
  23 //
  24 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  25 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  26 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  27 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  28 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  29 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  30 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  31 //
  32
  33 using System;
  34 using System.Reflection;
  35 using System.Resources;
  36 using System.IO;
  37 using System.Security.Policy;
  38 using System.Runtime.Serialization;
  39 using System.Globalization;
  40 using System.Runtime.CompilerServices;
  41 using System.Collections;
  42 using System.Runtime.InteropServices;
  43 using System.Security;
  44 using System.Security.Cryptography;
  45 using System.Security.Permissions;
  46
  47 using Mono.Security;
  48 using Mono.Security.Cryptography;
  49
  50 namespace System.Reflection.Emit {
  51
  52         internal struct RefEmitPermissionSet {
  53                 public SecurityAction action;
  54                 public string pset;
  55
  56                 public RefEmitPermissionSet (SecurityAction action, string pset) {
  57                         this.action = action;
  58                         this.pset = pset;
  59                 }
  60         }
  61
  62         internal struct MonoResource {
  63                 public byte[] data;
  64                 public string name;
  65                 public string filename;
  66                 public ResourceAttributes attrs;
  67                 public int offset;
  68         }
  69
  70         internal struct MonoWin32Resource {
  71                 public int res_type;
  72                 public int res_id;
  73                 public int lang_id;
  74                 public byte[] data;
  75
  76                 public MonoWin32Resource (int res_type, int res_id, int lang_id, byte[] data) {
  77                         this.res_type = res_type;
  78                         this.res_id = res_id;
  79                         this.lang_id = lang_id;
  80                         this.data = data;
  81                 }
  82         }
  83
  84         public sealed class AssemblyBuilder : Assembly {
  85                 #region Sync with reflection.h
  86                 private IntPtr dynamic_assembly;
  87                 private MethodInfo entry_point;
  88                 private ModuleBuilder[] modules;
  89                 private string name;
  90                 private string dir;
  91                 private CustomAttributeBuilder[] cattrs;
  92                 private MonoResource[] resources;
  93                 byte[] public_key;
  94                 string version;
  95                 string culture;
  96                 uint algid;
  97                 uint flags;
  98                 PEFileKinds pekind = PEFileKinds.Dll;
  99                 bool delay_sign;
 100                 uint access;
 101                 Module[] loaded_modules;
 102                 MonoWin32Resource[] win32_resources;
 103                 private RefEmitPermissionSet[] permissions_minimum;
 104                 private RefEmitPermissionSet[] permissions_optional;
 105                 private RefEmitPermissionSet[] permissions_refused;
 106                 PortableExecutableKind peKind;
 107                 ImageFileMachine machine;
 108                 #endregion
 109                 internal Type corlib_object_type = typeof (System.Object);
 110                 internal Type corlib_value_type = typeof (System.ValueType);
 111                 internal Type corlib_enum_type = typeof (System.Enum);
 112                 internal Type corlib_void_type = typeof (void);
 113                 ArrayList resource_writers = null;
 114                 Win32VersionResource version_res;
 115                 bool created;
 116                 bool is_module_only;
 117                 private Mono.Security.StrongName sn;
 118
 119                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 120                 private static extern void basic_init (AssemblyBuilder ab);
 121
 122                 internal AssemblyBuilder (AssemblyName n, string directory, AssemblyBuilderAccess access) {
 123                         name = n.Name;
 124                         if (directory == null || directory == String.Empty)
 125                                 dir = Directory.GetCurrentDirectory ();
 126                         else
 127                                 dir = directory;
 128                         this.access = (uint)access;
 129
 130                         /* Set defaults from n */
 131                         if (n.CultureInfo != null) {
 132                                 culture = n.CultureInfo.Name;
 133                         }
 134                         Version v = n.Version;
 135                         if (v != null) {
 136                                 version = v.ToString ();
 137                         }
 138
 139                         if (n.KeyPair != null) {
 140                                 // full keypair is available (for signing)
 141                                 sn = n.KeyPair.StrongName ();
 142                         }
 143                         else {
 144                                 // public key is available (for delay-signing)
 145                                 byte[] pk = n.GetPublicKey ();
 146                                 if ((pk != null) && (pk.Length > 0)) {
 147                                         sn = new Mono.Security.StrongName (pk);
 148                                 }
 149                         }
 150
 151                         basic_init (this);
 152                 }
 153
 154                 public override string CodeBase {
 155                         get {
 156                                 throw not_supported ();
 157                         }
 158                 }
 159
 160                 public override MethodInfo EntryPoint {
 161                         get {
 162                                 return entry_point;
 163                         }
 164                 }
 165
 166                 public override string Location {
 167                         get {
 168                                 throw not_supported ();
 169                         }
 170                 }
 171
 172 #if NET_1_1
 173                 /* This is to keep signature compatibility with MS.NET */
 174                 public override string ImageRuntimeVersion {
 175                         get {
 176                                 return base.ImageRuntimeVersion;
 177                         }
 178                 }
 179 #endif
 180
 181                 public void AddResourceFile (string name, string fileName)
 182                 {
 183                         AddResourceFile (name, fileName, ResourceAttributes.Public);
 184                 }
 185
 186                 public void AddResourceFile (string name, string fileName, ResourceAttributes attribute)
 187                 {
 188                         AddResourceFile (name, fileName, attribute, true);
 189                 }
 190
 191                 private void AddResourceFile (string name, string fileName, ResourceAttributes attribute, bool fileNeedsToExists)
 192                 {
 193                         check_name_and_filename (name, fileName, fileNeedsToExists);
 194
 195                         // Resource files are created/searched under the assembly storage
 196                         // directory
 197                         if (dir != null)
 198                                 fileName = Path.Combine (dir, fileName);
 199
 200                         if (resources != null) {
 201                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 202                                 System.Array.Copy(resources, new_r, resources.Length);
 203                                 resources = new_r;
 204                         } else {
 205                                 resources = new MonoResource [1];
 206                         }
 207                         int p = resources.Length - 1;
 208                         resources [p].name = name;
 209                         resources [p].filename = fileName;
 210                         resources [p].attrs = attribute;
 211                 }
 212
 213                 /// <summary>
 214                 /// Don't change the method name and parameters order. It is used by mcs
 215                 /// </summary>
 216                 internal void AddPermissionRequests (PermissionSet required, PermissionSet optional, PermissionSet refused)
 217                 {
 218                         if (created)
 219                                 throw new InvalidOperationException ("Assembly was already saved.");
 220
 221                         // required for base Assembly class (so the permissions
 222                         // can be used even if the assembly isn't saved to disk)
 223                         _minimum = required;
 224                         _optional = optional;
 225                         _refuse = refused;
 226
 227                         // required to reuse AddDeclarativeSecurity support
 228                         // already present in the runtime
 229                         if (required != null) {
 230                                 permissions_minimum = new RefEmitPermissionSet [1];
 231                                 permissions_minimum [0] = new RefEmitPermissionSet (
 232                                         SecurityAction.RequestMinimum, required.ToXml ().ToString ());
 233                         }
 234                         if (optional != null) {
 235                                 permissions_optional = new RefEmitPermissionSet [1];
 236                                 permissions_optional [0] = new RefEmitPermissionSet (
 237                                         SecurityAction.RequestOptional, optional.ToXml ().ToString ());
 238                         }
 239                         if (refused != null) {
 240                                 permissions_refused = new RefEmitPermissionSet [1];
 241                                 permissions_refused [0] = new RefEmitPermissionSet (
 242                                         SecurityAction.RequestRefuse, refused.ToXml ().ToString ());
 243                         }
 244                 }
 245
 246                 internal void EmbedResourceFile (string name, string fileName)
 247                 {
 248                         EmbedResourceFile (name, fileName, ResourceAttributes.Public);
 249                 }
 250
 251                 internal void EmbedResourceFile (string name, string fileName, ResourceAttributes attribute)
 252                 {
 253                         if (resources != null) {
 254                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 255                                 System.Array.Copy(resources, new_r, resources.Length);
 256                                 resources = new_r;
 257                         } else {
 258                                 resources = new MonoResource [1];
 259                         }
 260                         int p = resources.Length - 1;
 261                         resources [p].name = name;
 262                         resources [p].attrs = attribute;
 263                         try {
 264                                 FileStream s = new FileStream (fileName, FileMode.Open, FileAccess.Read);
 265                                 long len = s.Length;
 266                                 resources [p].data = new byte [len];
 267                                 s.Read (resources [p].data, 0, (int)len);
 268                                 s.Close ();
 269                         } catch {
 270                                 /* do something */
 271                         }
 272                 }
 273
 274                 internal void EmbedResource (string name, byte[] blob, ResourceAttributes attribute)
 275                 {
 276                         if (resources != null) {
 277                                 MonoResource[] new_r = new MonoResource [resources.Length + 1];
 278                                 System.Array.Copy(resources, new_r, resources.Length);
 279                                 resources = new_r;
 280                         } else {
 281                                 resources = new MonoResource [1];
 282                         }
 283                         int p = resources.Length - 1;
 284                         resources [p].name = name;
 285                         resources [p].attrs = attribute;
 286                         resources [p].data = blob;
 287                 }
 288
 289                 public ModuleBuilder DefineDynamicModule (string name)
 290                 {
 291                         return DefineDynamicModule (name, name, false, true);
 292                 }
 293
 294                 public ModuleBuilder DefineDynamicModule (string name, bool emitSymbolInfo)
 295                 {
 296                         return DefineDynamicModule (name, name, emitSymbolInfo, true);
 297                 }
 298
 299                 public ModuleBuilder DefineDynamicModule(string name, string fileName)
 300                 {
 301                         return DefineDynamicModule (name, fileName, false, false);
 302                 }
 303
 304                 public ModuleBuilder DefineDynamicModule (string name, string fileName,
 305                                                           bool emitSymbolInfo)
 306                 {
 307                         return DefineDynamicModule (name, fileName, emitSymbolInfo, false);
 308                 }
 309
 310                 private ModuleBuilder DefineDynamicModule (string name, string fileName,
 311                                                                                                    bool emitSymbolInfo, bool transient)
 312                 {
 313                         check_name_and_filename (name, fileName, false);
 314
 315                         if (!transient) {
 316                                 if (Path.GetExtension (fileName) == String.Empty)
 317                                         throw new ArgumentException ("Module file name '" + fileName + "' must have file extension.");
 318                                 if (!IsSave)
 319                                         throw new NotSupportedException ("Persistable modules are not supported in a dynamic assembly created with AssemblyBuilderAccess.Run");
 320                                 if (created)
 321                                         throw new InvalidOperationException ("Assembly was already saved.");
 322                         }
 323
 324                         ModuleBuilder r = new ModuleBuilder (this, name, fileName, emitSymbolInfo, transient);
 325
 326                         if ((modules != null) && is_module_only)
 327                                 throw new InvalidOperationException ("A module-only assembly can only contain one module.");
 328
 329                         if (modules != null) {
 330                                 ModuleBuilder[] new_modules = new ModuleBuilder [modules.Length + 1];
 331                                 System.Array.Copy(modules, new_modules, modules.Length);
 332                                 modules = new_modules;
 333                         } else {
 334                                 modules = new ModuleBuilder [1];
 335                         }
 336                         modules [modules.Length - 1] = r;
 337                         return r;
 338                 }
 339
 340                 [MethodImplAttribute(MethodImplOptions.InternalCall)]
 341                 private extern Module InternalAddModule (string fileName);
 342
 343                 /*
 344                  * Mono extension to support /addmodule in mcs.
 345                  */
 346                 internal Module AddModule (string fileName)
 347                 {
 348                         if (fileName == null)
 349                                 throw new ArgumentNullException (fileName);
 350
 351                         Module m = InternalAddModule (fileName);
 352
 353                         if (loaded_modules != null) {
 354                                 Module[] new_modules = new Module [loaded_modules.Length + 1];
 355                                 System.Array.Copy (loaded_modules, new_modules, loaded_modules.Length);
 356                                 loaded_modules = new_modules;
 357                         } else {
 358                                 loaded_modules = new Module [1];
 359                         }
 360                         loaded_modules [loaded_modules.Length - 1] = m;
 361
 362                         return m;
 363                 }
 364
 365                 public IResourceWriter DefineResource (string name, string description, string fileName)
 366                 {
 367                         return DefineResource (name, description, fileName, ResourceAttributes.Public);
 368                 }
 369
 370                 public IResourceWriter DefineResource (string name, string description,
 371                                                        string fileName, ResourceAttributes attribute)
 372                 {
 373                         IResourceWriter writer;
 374
 375                         // description seems to be ignored
 376                         AddResourceFile (name, fileName, attribute, false);
 377                         writer = new ResourceWriter (fileName);
 378                         if (resource_writers == null)
 379                                 resource_writers = new ArrayList ();
 380                         resource_writers.Add (writer);
 381                         return writer;
 382                 }
 383
 384                 private void AddUnmanagedResource (Win32Resource res) {
 385                         MemoryStream ms = new MemoryStream ();
 386                         res.WriteTo (ms);
 387
 388                         if (win32_resources != null) {
 389                                 MonoWin32Resource[] new_res = new MonoWin32Resource [win32_resources.Length + 1];
 390                                 System.Array.Copy (win32_resources, new_res, win32_resources.Length);
 391                                 win32_resources = new_res;
 392                         }
 393                         else
 394                                 win32_resources = new MonoWin32Resource [1];
 395
 396                         win32_resources [win32_resources.Length - 1] = new MonoWin32Resource (res.Type.Id, res.Name.Id, res.Language, ms.ToArray ());
 397                 }
 398
 399                 [MonoTODO]
 400                 public void DefineUnmanagedResource (byte[] resource)
 401                 {
 402                         if (resource == null)
 403                                 throw new ArgumentNullException ("resource");
 404
 405                         /*
 406                          * The format of the argument byte array is not documented
 407                          * so this method is impossible to implement.
 408                          */
 409
 410                         throw new NotImplementedException ();
 411                 }
 412
 413                 public void DefineUnmanagedResource (string resourceFileName)
 414                 {
 415                         if (resourceFileName == null)
 416                                 throw new ArgumentNullException ("resourceFileName");
 417                         if (resourceFileName == String.Empty)
 418                                 throw new ArgumentException ("resourceFileName");
 419                         if (!File.Exists (resourceFileName) || Directory.Exists (resourceFileName))
 420                                 throw new FileNotFoundException ("File '" + resourceFileName + "' does not exists or is a directory.");
 421
 422                         using (FileStream fs = new FileStream (resourceFileName, FileMode.Open)) {
 423                                 Win32ResFileReader reader = new Win32ResFileReader (fs);
 424
 425                                 foreach (Win32EncodedResource res in reader.ReadResources ()) {
 426                                         if (res.Name.IsName || res.Type.IsName)
 427                                                 throw new InvalidOperationException ("resource files with named resources or non-default resource types are not supported.");
 428
 429                                         AddUnmanagedResource (res);
 430                                 }
 431                         }
 432                 }
 433
 434                 public void DefineVersionInfoResource ()
 435                 {
 436                         if (version_res != null)
 437                                 throw new ArgumentException ("Native resource has already been defined.");
 438
 439                         version_res = new Win32VersionResource (1, 0);
 440
 441                         if (cattrs != null) {
 442                                 foreach (CustomAttributeBuilder cb in cattrs) {
 443                                         string attrname = cb.Ctor.ReflectedType.FullName;
 444
 445                                         if (attrname == "System.Reflection.AssemblyProductAttribute")
 446                                                 version_res.ProductName = cb.string_arg ();
 447                                         else if (attrname == "System.Reflection.AssemblyCompanyAttribute")
 448                                                 version_res.CompanyName = cb.string_arg ();
 449                                         else if (attrname == "System.Reflection.AssemblyCopyrightAttribute")
 450                                                 version_res.LegalCopyright = cb.string_arg ();
 451                                         else if (attrname == "System.Reflection.AssemblyTrademarkAttribute")
 452                                                 version_res.LegalTrademarks = cb.string_arg ();
 453                                         else if (attrname == "System.Reflection.AssemblyCultureAttribute")
 454                                                 version_res.FileLanguage = new CultureInfo (GetCultureString (cb.string_arg ())).LCID;
 455                                         else if (attrname == "System.Reflection.AssemblyFileVersionAttribute")
 456                                                 version_res.FileVersion = cb.string_arg ();
 457                                         else if (attrname == "System.Reflection.AssemblyInformationalVersionAttribute")
 458                                                 version_res.ProductVersion = cb.string_arg ();
 459                                         else if (attrname == "System.Reflection.AssemblyTitleAttribute")
 460                                                 version_res.FileDescription = cb.string_arg ();
 461                                         else if (attrname == "System.Reflection.AssemblyDescriptionAttribute")
 462                                                 version_res.Comments = cb.string_arg ();
 463                                 }
 464                         }
 465                 }
 466
 467                 public void DefineVersionInfoResource (string product, string productVersion,
 468                                                        string company, string copyright, string trademark)
 469                 {
 470                         if (version_res != null)
 471                                 throw new ArgumentException ("Native resource has already been defined.");
 472
 473                         /*
 474                          * We can only create the resource later, when the file name and
 475                          * the binary version is known.
 476                          */
 477
 478                         version_res = new Win32VersionResource (1, 0);
 479                         version_res.ProductName = product;
 480                         version_res.ProductVersion = productVersion;
 481                         version_res.CompanyName = company;
 482                         version_res.LegalCopyright = copyright;
 483                         version_res.LegalTrademarks = trademark;
 484                 }
 485
 486                 /*
 487                  * Mono extension to support /win32icon in mcs
 488                  */
 489                 internal void DefineIconResource (string iconFileName)
 490                 {
 491                         if (iconFileName == null)
 492                                 throw new ArgumentNullException ("iconFileName");
 493                         if (iconFileName == String.Empty)
 494                                 throw new ArgumentException ("iconFileName");
 495                         if (!File.Exists (iconFileName) || Directory.Exists (iconFileName))
 496                                 throw new FileNotFoundException ("File '" + iconFileName + "' does not exists or is a directory.");
 497
 498                         using (FileStream fs = new FileStream (iconFileName, FileMode.Open)) {
 499                                 Win32IconFileReader reader = new Win32IconFileReader (fs);
 500
 501                                 ICONDIRENTRY[] entries = reader.ReadIcons ();
 502
 503                                 Win32IconResource[] icons = new Win32IconResource [entries.Length];
 504                                 for (int i = 0; i < entries.Length; ++i) {
 505                                         icons [i] = new Win32IconResource (i + 1, 0, entries [i]);
 506                                         AddUnmanagedResource (icons [i]);
 507                                 }
 508
 509                                 Win32GroupIconResource group = new Win32GroupIconResource (1, 0, icons);
 510                                 AddUnmanagedResource (group);
 511                         }
 512                 }
 513
 514                 private void DefineVersionInfoResourceImpl (string fileName) {
 515                         // Add missing info
 516                         if (version_res.FileVersion == "0.0.0.0")
 517                                 version_res.FileVersion = version;
 518                         version_res.InternalName = Path.GetFileNameWithoutExtension (fileName);
 519                         version_res.OriginalFilename = fileName;
 520
 521                         AddUnmanagedResource (version_res);
 522                 }
 523
 524                 public ModuleBuilder GetDynamicModule (string name)
 525                 {
 526                         if (name == null)
 527                                 throw new ArgumentNullException ("name");
 528                         if (name == "")
 529                                 throw new ArgumentException ("Name can't be null");
 530
 531                         if (modules != null)
 532                                 for (int i = 0; i < modules.Length; ++i)
 533                                         if (modules [i].name == name)
 534                                                 return modules [i];
 535                         return null;
 536                 }
 537
 538                 public override Type[] GetExportedTypes ()
 539                 {
 540                         throw not_supported ();
 541                 }
 542
 543                 public override FileStream GetFile (string name)
 544                 {
 545                         throw not_supported ();
 546                 }
 547
 548                 public override FileStream[] GetFiles(bool getResourceModules) {
 549                         throw not_supported ();
 550                 }
 551
 552                 public override ManifestResourceInfo GetManifestResourceInfo(string resourceName) {
 553                         throw not_supported ();
 554                 }
 555
 556                 public override string[] GetManifestResourceNames() {
 557                         throw not_supported ();
 558                 }
 559
 560                 public override Stream GetManifestResourceStream(string name) {
 561                         throw not_supported ();
 562                 }
 563                 public override Stream GetManifestResourceStream(Type type, string name) {
 564                         throw not_supported ();
 565                 }
 566
 567                 internal bool IsSave {
 568                         get {
 569                                 return access != (uint)AssemblyBuilderAccess.Run;
 570                         }
 571                 }
 572
 573                 internal string AssemblyDir {
 574                         get {
 575                                 return dir;
 576                         }
 577                 }
 578
 579                 /*
 580                  * Mono extension. If this is set, the assembly can only contain one
 581                  * module, access should be Save, and the saved image will not contain an
 582                  * assembly manifest.
 583                  */
 584                 internal bool IsModuleOnly {
 585                         get {
 586                                 return is_module_only;
 587                         }
 588                         set {
 589                                 is_module_only = value;
 590                         }
 591                 }
 592
 593 #if NET_2_0
 594                 public
 595 #else
 596                 internal
 597 #endif
 598                 void Save (string assemblyFileName, PortableExecutableKind portableExecutableKind, ImageFileMachine imageFileMachine)
 599                 {
 600                         this.peKind = portableExecutableKind;
 601                         this.machine = imageFileMachine;
 602
 603                         if (resource_writers != null) {
 604                                 foreach (IResourceWriter writer in resource_writers) {
 605                                         writer.Generate ();
 606                                         writer.Close ();
 607                                 }
 608                         }
 609
 610                         // Create a main module if not already created
 611                         ModuleBuilder mainModule = null;
 612                         if (modules != null) {
 613                                 foreach (ModuleBuilder module in modules)
 614                                         if (module.FullyQualifiedName == assemblyFileName)
 615                                                 mainModule = module;
 616                         }
 617                         if (mainModule == null)
 618                                 mainModule = DefineDynamicModule ("RefEmit_OnDiskManifestModule", assemblyFileName);
 619
 620                         if (!is_module_only)
 621                                 mainModule.IsMain = true;
 622
 623                         /*
 624                          * Create a new entry point if the one specified
 625                          * by the user is in another module.
 626                          */
 627                         if ((entry_point != null) && entry_point.DeclaringType.Module != mainModule) {
 628                                 Type[] paramTypes;
 629                                 if (entry_point.GetParameters ().Length == 1)
 630                                         paramTypes = new Type [] { typeof (string) };
 631                                 else
 632                                         paramTypes = new Type [0];
 633
 634                                 MethodBuilder mb = mainModule.DefineGlobalMethod ("__EntryPoint$", MethodAttributes.Static|MethodAttributes.PrivateScope, entry_point.ReturnType, paramTypes);
 635                                 ILGenerator ilgen = mb.GetILGenerator ();
 636                                 if (paramTypes.Length == 1)
 637                                         ilgen.Emit (OpCodes.Ldarg_0);
 638                                 ilgen.Emit (OpCodes.Tailcall);
 639                                 ilgen.Emit (OpCodes.Call, entry_point);
 640                                 ilgen.Emit (OpCodes.Ret);
 641
 642                                 entry_point = mb;
 643                         }
 644
 645                         if (version_res != null)
 646                                 DefineVersionInfoResourceImpl (assemblyFileName);
 647
 648                         if (sn != null) {
 649                                 // runtime needs to value to embed it into the assembly
 650                                 public_key = sn.PublicKey;
 651                         }
 652
 653                         foreach (ModuleBuilder module in modules)
 654                                 if (module != mainModule)
 655                                         module.Save ();
 656
 657                         // Write out the main module at the end, because it needs to
 658                         // contain the hash of the other modules
 659                         mainModule.Save ();
 660
 661                         if ((sn != null) && (sn.CanSign)) {
 662                                 sn.Sign (System.IO.Path.Combine (this.AssemblyDir, assemblyFileName));
 663                         }
 664
 665                         created = true;
 666                 }
 667
 668                 public void Save (string assemblyFileName)
 669                 {
 670                         Save (assemblyFileName, PortableExecutableKind.ILOnly, ImageFileMachine.I386);
 671                 }
 672
 673                 public void SetEntryPoint (MethodInfo entryMethod)
 674                 {
 675                         SetEntryPoint (entryMethod, PEFileKinds.ConsoleApplication);
 676                 }
 677
 678                 public void SetEntryPoint (MethodInfo entryMethod, PEFileKinds fileKind)
 679                 {
 680                         if (entryMethod == null)
 681                                 throw new ArgumentNullException ("entryMethod");
 682                         if (entryMethod.DeclaringType.Assembly != this)
 683                                 throw new InvalidOperationException ("Entry method is not defined in the same assembly.");
 684
 685                         entry_point = entryMethod;
 686                         pekind = fileKind;
 687                 }
 688
 689                 public void SetCustomAttribute( CustomAttributeBuilder customBuilder)
 690                 {
 691                         if (customBuilder == null)
 692                                 throw new ArgumentNullException ("customBuilder");
 693
 694                         string attrname = customBuilder.Ctor.ReflectedType.FullName;
 695                         byte[] data;
 696                         int pos;
 697
 698                         if (attrname == "System.Reflection.AssemblyVersionAttribute") {
 699                                 version = create_assembly_version (customBuilder.string_arg ());
 700                                 return;
 701                         } else if (attrname == "System.Reflection.AssemblyCultureAttribute") {
 702                                 culture = GetCultureString (customBuilder.string_arg ());
 703                         } else if (attrname == "System.Reflection.AssemblyAlgorithmIdAttribute") {
 704                                 data = customBuilder.Data;
 705                                 pos = 2;
 706                                 algid = (uint)data [pos];
 707                                 algid |= ((uint)data [pos + 1]) << 8;
 708                                 algid |= ((uint)data [pos + 2]) << 16;
 709                                 algid |= ((uint)data [pos + 3]) << 24;
 710                         } else if (attrname == "System.Reflection.AssemblyFlagsAttribute") {
 711                                 data = customBuilder.Data;
 712                                 pos = 2;
 713                                 flags = (uint)data [pos];
 714                                 flags |= ((uint)data [pos + 1]) << 8;
 715                                 flags |= ((uint)data [pos + 2]) << 16;
 716                                 flags |= ((uint)data [pos + 3]) << 24;
 717                                 return;
 718                         }
 719
 720                         if (cattrs != null) {
 721                                 CustomAttributeBuilder[] new_array = new CustomAttributeBuilder [cattrs.Length + 1];
 722                                 cattrs.CopyTo (new_array, 0);
 723                                 new_array [cattrs.Length] = customBuilder;
 724                                 cattrs = new_array;
 725                         } else {
 726                                 cattrs = new CustomAttributeBuilder [1];
 727                                 cattrs [0] = customBuilder;
 728                         }
 729                 }
 730
 731                 public void SetCustomAttribute ( ConstructorInfo con, byte[] binaryAttribute) {
 732                         if (con == null)
 733                                 throw new ArgumentNullException ("con");
 734                         if (binaryAttribute == null)
 735                                 throw new ArgumentNullException ("binaryAttribute");
 736
 737                         SetCustomAttribute (new CustomAttributeBuilder (con, binaryAttribute));
 738                 }
 739
 740                 internal void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type) {
 741                         this.corlib_object_type = corlib_object_type;
 742                         this.corlib_value_type = corlib_value_type;
 743                         this.corlib_enum_type = corlib_enum_type;
 744                 }
 745
 746                 internal void SetCorlibTypeBuilders (Type corlib_object_type, Type corlib_value_type, Type corlib_enum_type, Type corlib_void_type)
 747                 {
 748                         SetCorlibTypeBuilders (corlib_object_type, corlib_value_type, corlib_enum_type);
 749                         this.corlib_void_type = corlib_void_type;
 750                 }
 751
 752                 private Exception not_supported () {
 753                         // Strange message but this is what MS.NET prints...
 754                         return new NotSupportedException ("The invoked member is not supported in a dynamic module.");
 755                 }
 756
 757                 private void check_name_and_filename (string name, string fileName,
 758                                                                                           bool fileNeedsToExists) {
 759                         if (name == null)
 760                                 throw new ArgumentNullException ("name");
 761                         if (fileName == null)
 762                                 throw new ArgumentNullException ("fileName");
 763                         if (name == "")
 764                                 throw new ArgumentException ("name cannot be empty", "name");
 765                         if (fileName == "")
 766                                 throw new ArgumentException ("fileName cannot be empty", "fileName");
 767                         if (Path.GetFileName (fileName) != fileName)
 768                                 throw new ArgumentException ("fileName '" + fileName + "' must not include a path.");
 769
 770                         // Resource files are created/searched under the assembly storage
 771                         // directory
 772                         string fullFileName = fileName;
 773                         if (dir != null)
 774                                 fullFileName = Path.Combine (dir, fileName);
 775
 776                         if (fileNeedsToExists && !File.Exists (fullFileName))
 777                                 throw new FileNotFoundException ("Could not find file '" + fileName + "'");
 778
 779                         if (resources != null) {
 780                                 for (int i = 0; i < resources.Length; ++i) {
 781                                         if (resources [i].filename == fullFileName)
 782                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 783                                         if (resources [i].name == name)
 784                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 785                                 }
 786                         }
 787
 788                         if (modules != null) {
 789                                 for (int i = 0; i < modules.Length; ++i) {
 790                                         // Use fileName instead of fullFileName here
 791                                         if (!modules [i].IsTransient () && (modules [i].FileName == fileName))
 792                                                 throw new ArgumentException ("Duplicate file name '" + fileName + "'");
 793                                         if (modules [i].Name == name)
 794                                                 throw new ArgumentException ("Duplicate name '" + name + "'");
 795                                 }
 796                         }
 797                 }
 798
 799                 private String create_assembly_version (String version) {
 800                         String[] parts = version.Split ('.');
 801                         int[] ver = new int [4] { 0, 0, 0, 0 };
 802
 803                         if ((parts.Length < 0) || (parts.Length > 4))
 804                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 805
 806                         for (int i = 0; i < parts.Length; ++i) {
 807                                 if (parts [i] == "*") {
 808                                         DateTime now = DateTime.Now;
 809
 810                                         if (i == 2) {
 811                                                 ver [2] = (now - new DateTime (2000, 1, 1)).Days;
 812                                                 if (parts.Length == 3)
 813                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 814                                         }
 815                                         else
 816                                                 if (i == 3)
 817                                                         ver [3] = (now.Second + (now.Minute * 60) + (now.Hour * 3600)) / 2;
 818                                         else
 819                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 820                                 }
 821                                 else {
 822                                         try {
 823                                                 ver [i] = Int32.Parse (parts [i]);
 824                                         }
 825                                         catch (FormatException) {
 826                                                 throw new ArgumentException ("The version specified '" + version + "' is invalid");
 827                                         }
 828                                 }
 829                         }
 830
 831                         return ver [0] + "." + ver [1] + "." + ver [2] + "." + ver [3];
 832                 }
 833
 834                 private string GetCultureString (string str)
 835                 {
 836                         return (str == "neutral" ? String.Empty : str);
 837                 }
 838         }
 839 }