mcs/class/System.Web/System.Web.UI/TemplateParser.cs

   1 //
   2 // System.Web.UI.TemplateParser
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //      Marek Habersack (mhabersack@novell.com)
   8 //
   9 // (C) 2002,2003 Ximian, Inc. (http://www.ximian.com)
  10 // Copyright (C) 2005-2008 Novell, Inc (http://www.novell.com)
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.CodeDom.Compiler;
  33 using System.Collections;
  34 using System.Collections.Generic;
  35 using System.ComponentModel;
  36 using System.Globalization;
  37 using System.IO;
  38 using System.Reflection;
  39 using System.Security.Permissions;
  40 using System.Text;
  41 using System.Threading;
  42 using System.Web.Compilation;
  43 using System.Web.Configuration;
  44 using System.Web.Hosting;
  45 using System.Web.Util;
  46
  47 namespace System.Web.UI {
  48         internal class ServerSideScript
  49         {
  50                 public readonly string Script;
  51                 public readonly ILocation Location;
  52
  53                 public ServerSideScript (string script, ILocation location)
  54                 {
  55                         Script = script;
  56                         Location = location;
  57                 }
  58         }
  59
  60         // CAS
  61         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  62         [AspNetHostingPermission (SecurityAction.InheritanceDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  63         public abstract class TemplateParser : BaseParser
  64         {
  65                 [Flags]
  66                 internal enum OutputCacheParsedParams
  67                 {
  68                         Location               = 0x0001,
  69                         CacheProfile           = 0x0002,
  70                         NoStore                = 0x0004,
  71                         SqlDependency          = 0x0008,
  72                         VaryByCustom           = 0x0010,
  73                         VaryByHeader           = 0x0020,
  74                         VaryByControl          = 0x0040,
  75                         VaryByContentEncodings = 0x0080
  76                 }
  77
  78                 string inputFile;
  79                 string text;
  80                 Hashtable mainAttributes;
  81                 ArrayList dependencies;
  82                 ArrayList assemblies;
  83                 Hashtable anames;
  84                 string[] binDirAssemblies;
  85                 Dictionary <string, bool> namespacesCache;
  86                 Dictionary <string, bool> imports;
  87                 List <string> interfaces;
  88                 List <ServerSideScript> scripts;
  89                 Type baseType;
  90                 bool baseTypeIsGlobal = true;
  91                 string className;
  92                 RootBuilder rootBuilder;
  93                 bool debug;
  94                 string compilerOptions;
  95                 string language;
  96                 bool implicitLanguage;
  97                 bool strictOn ;
  98                 bool explicitOn;
  99                 bool linePragmasOn = true;
 100                 bool output_cache;
 101                 int oc_duration;
 102                 string oc_header, oc_custom, oc_param, oc_controls;
 103                 string oc_content_encodings, oc_cacheprofile, oc_sqldependency;
 104                 bool oc_nostore;
 105                 OutputCacheParsedParams oc_parsed_params = 0;
 106                 bool oc_shared;
 107                 OutputCacheLocation oc_location;
 108
 109                 // Kludge needed to support pre-parsing of the main directive (see
 110                 // AspNetGenerator.GetRootBuilderType)
 111                 internal int allowedMainDirectives = 0;
 112
 113                 byte[] md5checksum;
 114                 string src;
 115                 bool srcIsLegacy;
 116                 string partialClassName;
 117                 string codeFileBaseClass;
 118                 string metaResourceKey;
 119                 Type codeFileBaseClassType;
 120                 Type pageParserFilterType;
 121                 PageParserFilter pageParserFilter;
 122
 123                 List <UnknownAttributeDescriptor> unknownMainAttributes;
 124                 Stack <string> includeDirs;
 125                 List <string> registeredTagNames;
 126                 ILocation directiveLocation;
 127
 128                 int appAssemblyIndex = -1;
 129
 130                 internal TemplateParser ()
 131                 {
 132                         imports = new Dictionary <string, bool> (StringComparer.Ordinal);
 133                         LoadConfigDefaults ();
 134                         assemblies = new ArrayList ();
 135                         CompilationSection compConfig = CompilationConfig;
 136                         foreach (AssemblyInfo info in compConfig.Assemblies) {
 137                                 if (info.Assembly != "*")
 138                                         AddAssemblyByName (info.Assembly);
 139                         }
 140
 141                         language = compConfig.DefaultLanguage;
 142                         implicitLanguage = true;
 143                 }
 144
 145                 internal virtual void LoadConfigDefaults ()
 146                 {
 147                         AddNamespaces (imports);
 148                         debug = CompilationConfig.Debug;
 149                 }
 150
 151                 internal void AddApplicationAssembly ()
 152                 {
 153                         if (Context.ApplicationInstance == null)
 154                                 return; // this may happen if we have Global.asax and have
 155                                         // controls registered from Web.Config
 156                         string location = Context.ApplicationInstance.AssemblyLocation;
 157                         if (location != typeof (TemplateParser).Assembly.Location) {
 158                                 appAssemblyIndex = assemblies.Add (location);
 159                         }
 160                 }
 161
 162                 protected abstract Type CompileIntoType ();
 163
 164                 internal void AddControl (Type type, IDictionary attributes)
 165                 {
 166                         AspGenerator generator = AspGenerator;
 167                         if (generator == null)
 168                                 return;
 169                         generator.AddControl (type, attributes);
 170                 }
 171
 172                 void AddNamespaces (Dictionary <string, bool> imports)
 173                 {
 174                         if (BuildManager.HaveResources)
 175                                 imports.Add ("System.Resources", true);
 176
 177                         PagesSection pages = PagesConfig;
 178                         if (pages == null)
 179                                 return;
 180
 181                         NamespaceCollection namespaces = pages.Namespaces;
 182                         if (namespaces == null || namespaces.Count == 0)
 183                                 return;
 184
 185                         foreach (NamespaceInfo nsi in namespaces) {
 186                                 string ns = nsi.Namespace;
 187                                 if (imports.ContainsKey (ns))
 188                                         continue;
 189
 190                                 imports.Add (ns, true);
 191                         }
 192                 }
 193
 194                 internal void RegisterCustomControl (string tagPrefix, string tagName, string src)
 195                 {
 196                         string realpath = null;
 197                         bool fileExists = false;
 198                         VirtualFile vf = null;
 199                         VirtualPathProvider vpp = HostingEnvironment.VirtualPathProvider;
 200                         VirtualPath vp = new VirtualPath (src, BaseVirtualDir);
 201                         string vpAbsolute = vp.Absolute;
 202
 203                         if (vpp.FileExists (vpAbsolute)) {
 204                                 fileExists = true;
 205                                 vf = vpp.GetFile (vpAbsolute);
 206                                 if (vf != null)
 207                                         realpath = MapPath (vf.VirtualPath);
 208                         }
 209
 210                         if (!fileExists)
 211                                 ThrowParseFileNotFound (src);
 212
 213                         if (String.Compare (realpath, inputFile, false, Helpers.InvariantCulture) == 0)
 214                                 return;
 215
 216                         string vpath = vf.VirtualPath;
 217
 218                         try {
 219                                 RegisterTagName (tagPrefix + ":" + tagName);
 220                                 RootBuilder.Foundry.RegisterFoundry (tagPrefix, tagName, vpath);
 221                                 AddDependency (vpath);
 222                         } catch (ParseException pe) {
 223                                 if (this is UserControlParser)
 224                                         throw new ParseException (Location, pe.Message, pe);
 225                                 throw;
 226                         }
 227                 }
 228
 229                 internal void RegisterNamespace (string tagPrefix, string ns, string assembly)
 230                 {
 231                         AddImport (ns);
 232                         Assembly ass = null;
 233
 234                         if (assembly != null && assembly.Length > 0)
 235                                 ass = AddAssemblyByName (assembly);
 236
 237                         RootBuilder.Foundry.RegisterFoundry (tagPrefix, ass, ns);
 238                 }
 239
 240                 internal virtual void HandleOptions (object obj)
 241                 {
 242                 }
 243
 244                 internal static string GetOneKey (Hashtable tbl)
 245                 {
 246                         foreach (object key in tbl.Keys)
 247                                 return key.ToString ();
 248
 249                         return null;
 250                 }
 251
 252                 internal virtual void AddDirective (string directive, Hashtable atts)
 253                 {
 254                         var pageParserFilter = PageParserFilter;
 255                         if (String.Compare (directive, DefaultDirectiveName, true, Helpers.InvariantCulture) == 0) {
 256                                 bool allowMainDirective = allowedMainDirectives > 0;
 257
 258                                 if (mainAttributes != null && !allowMainDirective)
 259                                         ThrowParseException ("Only 1 " + DefaultDirectiveName + " is allowed");
 260
 261                                 allowedMainDirectives--;
 262                                 if (mainAttributes != null)
 263                                         return;
 264
 265                                 if (pageParserFilter != null)
 266                                         pageParserFilter.PreprocessDirective (directive.ToLower (Helpers.InvariantCulture), atts);
 267
 268                                 mainAttributes = atts;
 269                                 ProcessMainAttributes (mainAttributes);
 270                                 return;
 271                         } else if (pageParserFilter != null)
 272                                 pageParserFilter.PreprocessDirective (directive.ToLower (Helpers.InvariantCulture), atts);
 273
 274                         int cmp = String.Compare ("Assembly", directive, true, Helpers.InvariantCulture);
 275                         if (cmp == 0) {
 276                                 string name = GetString (atts, "Name", null);
 277                                 string src = GetString (atts, "Src", null);
 278
 279                                 if (atts.Count > 0)
 280                                         ThrowParseException ("Attribute " + GetOneKey (atts) + " unknown.");
 281
 282                                 if (name == null && src == null)
 283                                         ThrowParseException ("You gotta specify Src or Name");
 284
 285                                 if (name != null && src != null)
 286                                         ThrowParseException ("Src and Name cannot be used together");
 287
 288                                 if (name != null) {
 289                                         AddAssemblyByName (name);
 290                                 } else {
 291                                         GetAssemblyFromSource (src);
 292                                 }
 293
 294                                 return;
 295                         }
 296
 297                         cmp = String.Compare ("Import", directive, true, Helpers.InvariantCulture);
 298                         if (cmp == 0) {
 299                                 string namesp = GetString (atts, "Namespace", null);
 300                                 if (atts.Count > 0)
 301                                         ThrowParseException ("Attribute " + GetOneKey (atts) + " unknown.");
 302
 303                                 AddImport (namesp);
 304                                 return;
 305                         }
 306
 307                         cmp = String.Compare ("Implements", directive, true, Helpers.InvariantCulture);
 308                         if (cmp == 0) {
 309                                 string ifacename = GetString (atts, "Interface", "");
 310
 311                                 if (atts.Count > 0)
 312                                         ThrowParseException ("Attribute " + GetOneKey (atts) + " unknown.");
 313
 314                                 Type iface = LoadType (ifacename);
 315                                 if (iface == null)
 316                                         ThrowParseException ("Cannot find type " + ifacename);
 317
 318                                 if (!iface.IsInterface)
 319                                         ThrowParseException (iface + " is not an interface");
 320
 321                                 AddInterface (iface.FullName);
 322                                 return;
 323                         }
 324
 325                         cmp = String.Compare ("OutputCache", directive, true, Helpers.InvariantCulture);
 326                         if (cmp == 0) {
 327                                 HttpResponse response = HttpContext.Current.Response;
 328                                 if (response != null)
 329                                         response.Cache.SetValidUntilExpires (true);
 330
 331                                 output_cache = true;
 332
 333                                 if (atts ["Duration"] == null)
 334                                         ThrowParseException ("The directive is missing a 'duration' attribute.");
 335                                 if (atts ["VaryByParam"] == null && atts ["VaryByControl"] == null)
 336                                         ThrowParseException ("This directive is missing 'VaryByParam' " +
 337                                                         "or 'VaryByControl' attribute, which should be set to \"none\", \"*\", " +
 338                                                         "or a list of name/value pairs.");
 339
 340                                 foreach (DictionaryEntry entry in atts) {
 341                                         string key = (string) entry.Key;
 342                                         if (key == null)
 343                                                 continue;
 344
 345                                         switch (key.ToLower (Helpers.InvariantCulture)) {
 346                                                 case "duration":
 347                                                         oc_duration = Int32.Parse ((string) entry.Value);
 348                                                         if (oc_duration < 1)
 349                                                                 ThrowParseException ("The 'duration' attribute must be set " +
 350                                                                                      "to a positive integer value");
 351                                                         break;
 352
 353                                                 case "sqldependency":
 354                                                         oc_sqldependency = (string) entry.Value;
 355                                                         break;
 356
 357                                                 case "nostore":
 358                                                         try {
 359                                                                 oc_nostore = Boolean.Parse ((string) entry.Value);
 360                                                                 oc_parsed_params |= OutputCacheParsedParams.NoStore;
 361                                                         } catch {
 362                                                                 ThrowParseException ("The 'NoStore' attribute is case sensitive" +
 363                                                                                      " and must be set to 'true' or 'false'.");
 364                                                         }
 365                                                         break;
 366
 367                                                 case "cacheprofile":
 368                                                         oc_cacheprofile = (string) entry.Value;
 369                                                         oc_parsed_params |= OutputCacheParsedParams.CacheProfile;
 370                                                         break;
 371
 372                                                 case "varybycontentencodings":
 373                                                         oc_content_encodings = (string) entry.Value;
 374                                                         oc_parsed_params |= OutputCacheParsedParams.VaryByContentEncodings;
 375                                                         break;
 376
 377                                                 case "varybyparam":
 378                                                         oc_param = (string) entry.Value;
 379                                                         if (String.Compare (oc_param, "none", true, Helpers.InvariantCulture) == 0)
 380                                                                 oc_param = null;
 381                                                         break;
 382                                                 case "varybyheader":
 383                                                         oc_header = (string) entry.Value;
 384                                                         oc_parsed_params |= OutputCacheParsedParams.VaryByHeader;
 385                                                         break;
 386                                                 case "varybycustom":
 387                                                         oc_custom = (string) entry.Value;
 388                                                         oc_parsed_params |= OutputCacheParsedParams.VaryByCustom;
 389                                                         break;
 390                                                 case "location":
 391                                                         if (!(this is PageParser))
 392                                                                 goto default;
 393
 394                                                         try {
 395                                                                 oc_location = (OutputCacheLocation) Enum.Parse (
 396                                                                         typeof (OutputCacheLocation), (string) entry.Value, true);
 397                                                                 oc_parsed_params |= OutputCacheParsedParams.Location;
 398                                                         } catch {
 399                                                                 ThrowParseException ("The 'location' attribute is case sensitive and " +
 400                                                                                      "must be one of the following values: Any, Client, " +
 401                                                                                      "Downstream, Server, None, ServerAndClient.");
 402                                                         }
 403                                                         break;
 404                                                 case "varybycontrol":
 405                                                         oc_controls = (string) entry.Value;
 406                                                         oc_parsed_params |= OutputCacheParsedParams.VaryByControl;
 407                                                         break;
 408                                                 case "shared":
 409                                                         if (this is PageParser)
 410                                                                 goto default;
 411
 412                                                         try {
 413                                                                 oc_shared = Boolean.Parse ((string) entry.Value);
 414                                                         } catch {
 415                                                                 ThrowParseException ("The 'shared' attribute is case sensitive" +
 416                                                                                      " and must be set to 'true' or 'false'.");
 417                                                         }
 418                                                         break;
 419                                                 default:
 420                                                         ThrowParseException ("The '" + key + "' attribute is not " +
 421                                                                              "supported by the 'Outputcache' directive.");
 422                                                         break;
 423                                         }
 424
 425                                 }
 426
 427                                 return;
 428                         }
 429
 430                         ThrowParseException ("Unknown directive: " + directive);
 431                 }
 432
 433                 internal Type LoadType (string typeName)
 434                 {
 435                         Type type = HttpApplication.LoadType (typeName);
 436                         if (type == null)
 437                                 return null;
 438                         Assembly asm = type.Assembly;
 439                         string location = asm.Location;
 440
 441                         string dirname = Path.GetDirectoryName (location);
 442                         bool doAddAssembly = true;
 443                         if (dirname == HttpApplication.BinDirectory)
 444                                 doAddAssembly = false;
 445
 446                         if (doAddAssembly)
 447                                 AddAssembly (asm, true);
 448
 449                         return type;
 450                 }
 451
 452                 internal virtual void AddInterface (string iface)
 453                 {
 454                         if (interfaces == null)
 455                                 interfaces = new List <string> ();
 456
 457                         if (!interfaces.Contains (iface))
 458                                 interfaces.Add (iface);
 459                 }
 460
 461                 internal virtual void AddImport (string namesp)
 462                 {
 463                         if (namesp == null || namesp.Length == 0)
 464                                 return;
 465
 466                         if (imports == null)
 467                                 imports = new Dictionary <string, bool> (StringComparer.Ordinal);
 468
 469                         if (imports.ContainsKey (namesp))
 470                                 return;
 471
 472                         imports.Add (namesp, true);
 473                         AddAssemblyForNamespace (namesp);
 474                 }
 475
 476                 void AddAssemblyForNamespace (string namesp)
 477                 {
 478                         if (binDirAssemblies == null)
 479                                 binDirAssemblies = HttpApplication.BinDirectoryAssemblies;
 480                         if (binDirAssemblies.Length == 0)
 481                                 return;
 482
 483                         if (namespacesCache == null)
 484                                 namespacesCache = new Dictionary <string, bool> ();
 485                         else if (namespacesCache.ContainsKey (namesp))
 486                                 return;
 487
 488                         foreach (Assembly asm in AppDomain.CurrentDomain.GetAssemblies ())
 489                                 if (FindNamespaceInAssembly (asm, namesp))
 490                                         return;
 491
 492                         IList tla = BuildManager.TopLevelAssemblies;
 493                         if (tla != null && tla.Count > 0) {
 494                                 foreach (Assembly asm in tla) {
 495                                         if (FindNamespaceInAssembly (asm, namesp))
 496                                                 return;
 497                                 }
 498                         }
 499
 500                         Assembly a;
 501                         foreach (string s in binDirAssemblies) {
 502                                 a = Assembly.LoadFrom (s);
 503                                 if (FindNamespaceInAssembly (a, namesp))
 504                                         return;
 505                         }
 506                 }
 507
 508                 bool FindNamespaceInAssembly (Assembly asm, string namesp)
 509                 {
 510                         Type[] asmTypes;
 511
 512                         try {
 513                                 asmTypes = asm.GetTypes ();
 514                         } catch (ReflectionTypeLoadException) {
 515                                 // ignore
 516                                 return false;
 517                         }
 518
 519                         foreach (Type type in asmTypes) {
 520                                 if (String.Compare (type.Namespace, namesp, StringComparison.Ordinal) == 0) {
 521                                         namespacesCache.Add (namesp, true);
 522                                         AddAssembly (asm, true);
 523                                         return true;
 524                                 }
 525                         }
 526
 527                         return false;
 528                 }
 529
 530                 internal virtual void AddSourceDependency (string filename)
 531                 {
 532                         if (dependencies != null && dependencies.Contains (filename))
 533                                 ThrowParseException ("Circular file references are not allowed. File: " + filename);
 534
 535                         AddDependency (filename);
 536                 }
 537
 538                 internal virtual void AddDependency (string filename)
 539                 {
 540                         if (filename == null || filename == String.Empty)
 541                                 return;
 542
 543                         if (dependencies == null)
 544                                 dependencies = new ArrayList ();
 545
 546                         if (!dependencies.Contains (filename))
 547                                 dependencies.Add (filename);
 548                 }
 549
 550                 internal virtual void AddAssembly (Assembly assembly, bool fullPath)
 551                 {
 552                         if (assembly == null || assembly.Location == String.Empty)
 553                                 return;
 554
 555                         if (anames == null)
 556                                 anames = new Hashtable ();
 557
 558                         string name = assembly.GetName ().Name;
 559                         string loc = assembly.Location;
 560                         if (fullPath) {
 561                                 if (!assemblies.Contains (loc)) {
 562                                         assemblies.Add (loc);
 563                                 }
 564
 565                                 anames [name] = loc;
 566                                 anames [loc] = assembly;
 567                         } else {
 568                                 if (!assemblies.Contains (name)) {
 569                                         assemblies.Add (name);
 570                                 }
 571
 572                                 anames [name] = assembly;
 573                         }
 574                 }
 575
 576                 internal virtual Assembly AddAssemblyByFileName (string filename)
 577                 {
 578                         Assembly assembly = null;
 579                         Exception error = null;
 580
 581                         try {
 582                                 assembly = Assembly.LoadFrom (filename);
 583                         } catch (Exception e) { error = e; }
 584
 585                         if (assembly == null)
 586                                 ThrowParseException ("Assembly " + filename + " not found", error);
 587
 588                         AddAssembly (assembly, true);
 589                         return assembly;
 590                 }
 591
 592                 internal virtual Assembly AddAssemblyByName (string name)
 593                 {
 594                         if (anames == null)
 595                                 anames = new Hashtable ();
 596
 597                         if (anames.Contains (name)) {
 598                                 object o = anames [name];
 599                                 if (o is string)
 600                                         o = anames [o];
 601
 602                                 return (Assembly) o;
 603                         }
 604
 605                         Assembly assembly = null;
 606                         Exception error = null;
 607                         try {
 608                                 assembly = Assembly.Load (name);
 609                         } catch (Exception e) { error = e; }
 610
 611                         if (assembly == null) {
 612                                 try {
 613                                         assembly = Assembly.LoadWithPartialName (name);
 614                                 } catch (Exception e) { error = e; }
 615                         }
 616
 617                         if (assembly == null)
 618                                 ThrowParseException ("Assembly " + name + " not found", error);
 619
 620                         AddAssembly (assembly, true);
 621                         return assembly;
 622                 }
 623
 624                 internal virtual void ProcessMainAttributes (Hashtable atts)
 625                 {
 626                         directiveLocation = new System.Web.Compilation.Location (Location);
 627                         CompilationSection compConfig;
 628
 629                         compConfig = CompilationConfig;
 630
 631                         atts.Remove ("Description"); // ignored
 632                         atts.Remove ("CodeBehind");  // ignored
 633                         atts.Remove ("AspCompat"); // ignored
 634
 635                         debug = GetBool (atts, "Debug", compConfig.Debug);
 636                         compilerOptions = GetString (atts, "CompilerOptions", "");
 637                         language = GetString (atts, "Language", "");
 638                         if (language.Length != 0)
 639                                 implicitLanguage = false;
 640                         else
 641                                 language = compConfig.DefaultLanguage;
 642
 643                         strictOn = GetBool (atts, "Strict", compConfig.Strict);
 644                         explicitOn = GetBool (atts, "Explicit", compConfig.Explicit);
 645                         if (atts.ContainsKey ("LinePragmas"))
 646                                 linePragmasOn = GetBool (atts, "LinePragmas", true);
 647
 648                         string inherits = GetString (atts, "Inherits", null);
 649                         string srcRealPath = null;
 650
 651                         // In ASP 2, the source file is actually integrated with
 652                         // the generated file via the use of partial classes. This
 653                         // means that the code file has to be confirmed, but not
 654                         // used at this point.
 655                         src = GetString (atts, "CodeFile", null);
 656                         codeFileBaseClass = GetString (atts, "CodeFileBaseClass", null);
 657
 658                         if (src == null && codeFileBaseClass != null)
 659                                 ThrowParseException ("The 'CodeFileBaseClass' attribute cannot be used without a 'CodeFile' attribute");
 660
 661                         string legacySrc = GetString (atts, "Src", null);
 662                         if (legacySrc != null) {
 663                                 legacySrc = UrlUtils.Combine (BaseVirtualDir, legacySrc);
 664                                 GetAssemblyFromSource (legacySrc);
 665
 666                                 if (src == null) {
 667                                         src = legacySrc;
 668                                         legacySrc = MapPath (legacySrc, false);
 669                                         srcRealPath = legacySrc;
 670                                         if (!File.Exists (srcRealPath))
 671                                                 ThrowParseException ("File " + src + " not found");
 672
 673                                         srcIsLegacy = true;
 674                                 } else
 675                                         legacySrc = MapPath (legacySrc, false);
 676
 677                                 AddDependency (legacySrc);
 678                         }
 679
 680                         if (!srcIsLegacy && src != null && inherits != null) {
 681                                 // Make sure the source exists
 682                                 src = UrlUtils.Combine (BaseVirtualDir, src);
 683                                 srcRealPath = MapPath (src, false);
 684
 685                                 if (!HostingEnvironment.VirtualPathProvider.FileExists (src))
 686                                         ThrowParseException ("File " + src + " not found");
 687
 688                                 // We are going to create a partial class that shares
 689                                 // the same name as the inherits tag, so reset the
 690                                 // name. The base type is changed because it is the
 691                                 // code file's responsibilty to extend the classes
 692                                 // needed.
 693                                 partialClassName = inherits;
 694
 695                                 // Add the code file as an option to the
 696                                 // compiler. This lets both files be compiled at once.
 697                                 compilerOptions += " \"" + srcRealPath + "\"";
 698
 699                                 if (codeFileBaseClass != null) {
 700                                         try {
 701                                                 codeFileBaseClassType = LoadType (codeFileBaseClass);
 702                                         } catch (Exception) {
 703                                         }
 704
 705                                         if (codeFileBaseClassType == null)
 706                                                 ThrowParseException ("Could not load type '{0}'", codeFileBaseClass);
 707                                 }
 708                         } else if (inherits != null) {
 709                                 // We just set the inherits directly because this is a
 710                                 // Single-Page model.
 711                                 SetBaseType (inherits);
 712                         }
 713
 714                         if (src != null) {
 715                                 if (VirtualPathUtility.IsAbsolute (src))
 716                                         src = VirtualPathUtility.ToAppRelative (src);
 717                                 AddDependency (src);
 718                         }
 719
 720                         className = GetString (atts, "ClassName", null);
 721                         if (className != null) {
 722                                 string [] identifiers = className.Split ('.');
 723                                 for (int i = 0; i < identifiers.Length; i++)
 724                                         if (!CodeGenerator.IsValidLanguageIndependentIdentifier (identifiers [i]))
 725                                                 ThrowParseException (String.Format ("'{0}' is not a valid "
 726                                                         + "value for attribute 'classname'.", className));
 727                         }
 728
 729                         if (this is TemplateControlParser)
 730                                 metaResourceKey = GetString (atts, "meta:resourcekey", null);
 731
 732                         if (inherits != null && (this is PageParser || this is UserControlParser) && atts.Count > 0) {
 733                                 if (unknownMainAttributes == null)
 734                                         unknownMainAttributes = new List <UnknownAttributeDescriptor> ();
 735                                 string key, val;
 736
 737                                 foreach (DictionaryEntry de in atts) {
 738                                         key = de.Key as string;
 739                                         val = de.Value as string;
 740
 741                                         if (String.IsNullOrEmpty (key) || String.IsNullOrEmpty (val))
 742                                                 continue;
 743                                         CheckUnknownAttribute (key, val, inherits);
 744                                 }
 745                                 return;
 746                         }
 747
 748                         if (atts.Count > 0)
 749                                 ThrowParseException ("Unknown attribute: " + GetOneKey (atts));
 750                 }
 751
 752                 void RegisterTagName (string tagName)
 753                 {
 754                         if (registeredTagNames == null)
 755                                 registeredTagNames = new List <string> ();
 756
 757                         if (registeredTagNames.Contains (tagName))
 758                                 return;
 759
 760                         registeredTagNames.Add (tagName);
 761                 }
 762
 763                 void CheckUnknownAttribute (string name, string val, string inherits)
 764                 {
 765                         MemberInfo mi = null;
 766                         bool missing = false;
 767                         string memberName = name.Trim ().ToLower (Helpers.InvariantCulture);
 768                         Type parent = codeFileBaseClassType;
 769
 770                         if (parent == null)
 771                                 parent = baseType;
 772
 773                         try {
 774                                 MemberInfo[] infos = parent.GetMember (memberName,
 775                                                                        MemberTypes.Field | MemberTypes.Property,
 776                                                                        BindingFlags.Public | BindingFlags.Instance |
 777                                                                        BindingFlags.IgnoreCase | BindingFlags.Static);
 778                                 if (infos.Length != 0) {
 779                                         // prefer public properties to public methods (it's what MS.NET does)
 780                                         foreach (MemberInfo tmp in infos) {
 781                                                 if (tmp is PropertyInfo) {
 782                                                         mi = tmp;
 783                                                         break;
 784                                                 }
 785                                         }
 786                                         if (mi == null)
 787                                                 mi = infos [0];
 788                                 } else
 789                                         missing = true;
 790                         } catch (Exception) {
 791                                 missing = true;
 792                         }
 793                         if (missing)
 794                                 ThrowParseException (
 795                                         "Error parsing attribute '{0}': Type '{1}' does not have a public property named '{0}'",
 796                                         memberName, inherits);
 797
 798                         Type memberType = null;
 799                         if (mi is PropertyInfo) {
 800                                 PropertyInfo pi = mi as PropertyInfo;
 801
 802                                 if (!pi.CanWrite)
 803                                         ThrowParseException (
 804                                                 "Error parsing attribute '{0}': The '{0}' property is read-only and cannot be set.",
 805                                                 memberName);
 806                                 memberType = pi.PropertyType;
 807                         } else if (mi is FieldInfo) {
 808                                 memberType = ((FieldInfo)mi).FieldType;
 809                         } else
 810                                 ThrowParseException ("Could not determine member the kind of '{0}' in base type '{1}",
 811                                                      memberName, inherits);
 812                         TypeConverter converter = TypeDescriptor.GetConverter (memberType);
 813                         bool convertible = true;
 814                         object value = null;
 815
 816                         if (converter == null || !converter.CanConvertFrom (typeof (string)))
 817                                 convertible = false;
 818
 819                         if (convertible) {
 820                                 try {
 821                                         value = converter.ConvertFromInvariantString (val);
 822                                 } catch (Exception) {
 823                                         convertible = false;
 824                                 }
 825                         }
 826
 827                         if (!convertible)
 828                                 ThrowParseException ("Error parsing attribute '{0}': Cannot create an object of type '{1}' from its string representation '{2}' for the '{3}' property.",
 829                                                      memberName, memberType, val, mi.Name);
 830
 831                         UnknownAttributeDescriptor desc = new UnknownAttributeDescriptor (mi, value);
 832                         unknownMainAttributes.Add (desc);
 833                 }
 834
 835                 internal void SetBaseType (string type)
 836                 {
 837                         Type parent;
 838                         if (type == null || type == DefaultBaseTypeName)
 839                                 parent = DefaultBaseType;
 840                         else
 841                                 parent = null;
 842
 843                         if (parent == null) {
 844                                 parent = LoadType (type);
 845
 846                                 if (parent == null)
 847                                         ThrowParseException ("Cannot find type " + type);
 848
 849                                 if (!DefaultBaseType.IsAssignableFrom (parent))
 850                                         ThrowParseException ("The parent type '" + type + "' does not derive from " + DefaultBaseType);
 851                         }
 852
 853                         var pageParserFilter = PageParserFilter;
 854                         if (pageParserFilter != null && !pageParserFilter.AllowBaseType (parent))
 855                                 throw new HttpException ("Base type '" + parent + "' is not allowed.");
 856
 857                         baseType = parent;
 858                 }
 859
 860                 internal void SetLanguage (string language)
 861                 {
 862                         this.language = language;
 863                         implicitLanguage = false;
 864                 }
 865
 866                 internal void PushIncludeDir (string dir)
 867                 {
 868                         if (includeDirs == null)
 869                                 includeDirs = new Stack <string> (1);
 870
 871                         includeDirs.Push (dir);
 872                 }
 873
 874                 internal string PopIncludeDir ()
 875                 {
 876                         if (includeDirs == null || includeDirs.Count == 0)
 877                                 return null;
 878
 879                         return includeDirs.Pop () as string;
 880                 }
 881
 882                 Assembly GetAssemblyFromSource (string vpath)
 883                 {
 884                         vpath = UrlUtils.Combine (BaseVirtualDir, vpath);
 885                         string realPath = MapPath (vpath, false);
 886                         if (!File.Exists (realPath))
 887                                 ThrowParseException ("File " + vpath + " not found");
 888
 889                         AddSourceDependency (vpath);
 890
 891                         CompilerResults result;
 892                         string tmp;
 893                         CompilerParameters parameters;
 894                         CodeDomProvider provider = BaseCompiler.CreateProvider (HttpContext.Current, language, out parameters, out tmp);
 895                         if (provider == null)
 896                                 throw new HttpException ("Cannot find provider for language '" + language + "'.");
 897
 898                         AssemblyBuilder abuilder = new AssemblyBuilder (provider);
 899                         abuilder.CompilerOptions = parameters;
 900                         abuilder.AddAssemblyReference (BuildManager.GetReferencedAssemblies () as List <Assembly>);
 901                         abuilder.AddCodeFile (realPath);
 902                         result = abuilder.BuildAssembly (new VirtualPath (vpath));
 903
 904                         if (result.NativeCompilerReturnValue != 0) {
 905                                 using (StreamReader reader = new StreamReader (realPath)) {
 906                                         throw new CompilationException (realPath, result.Errors, reader.ReadToEnd ());
 907                                 }
 908                         }
 909
 910                         AddAssembly (result.CompiledAssembly, true);
 911                         return result.CompiledAssembly;
 912                 }
 913
 914                 internal abstract string DefaultBaseTypeName { get; }
 915                 internal abstract string DefaultDirectiveName { get; }
 916
 917                 internal bool LinePragmasOn {
 918                         get { return linePragmasOn; }
 919                 }
 920
 921                 internal byte[] MD5Checksum {
 922                         get { return md5checksum; }
 923                         set { md5checksum = value; }
 924                 }
 925
 926                 internal PageParserFilter PageParserFilter {
 927                         get {
 928                                 if (pageParserFilter != null)
 929                                         return pageParserFilter;
 930
 931                                 Type t = PageParserFilterType;
 932                                 if (t == null)
 933                                         return null;
 934
 935                                 pageParserFilter = Activator.CreateInstance (t) as PageParserFilter;
 936                                 pageParserFilter.Initialize (this);
 937
 938                                 return pageParserFilter;
 939                         }
 940                 }
 941
 942                 internal Type PageParserFilterType {
 943                         get {
 944                                 if (pageParserFilterType == null) {
 945                                         string typeName = PagesConfig.PageParserFilterType;
 946                                         if (String.IsNullOrEmpty (typeName))
 947                                                 return null;
 948
 949                                         pageParserFilterType = HttpApplication.LoadType (typeName, true);
 950                                 }
 951
 952                                 return pageParserFilterType;
 953                         }
 954                 }
 955
 956                 internal Type DefaultBaseType {
 957                         get {
 958                                 Type type = Type.GetType (DefaultBaseTypeName, true);
 959
 960                                 return type;
 961                         }
 962                 }
 963
 964                 internal ILocation DirectiveLocation {
 965                         get { return directiveLocation; }
 966                 }
 967
 968                 internal string ParserDir {
 969                         get {
 970                                 if (includeDirs == null || includeDirs.Count == 0)
 971                                         return BaseDir;
 972
 973                                 return includeDirs.Peek () as string;
 974                         }
 975                 }
 976
 977                 internal string InputFile
 978                 {
 979                         get { return inputFile; }
 980                         set { inputFile = value; }
 981                 }
 982
 983                 internal bool IsPartial {
 984                         get { return (!srcIsLegacy && src != null); }
 985                 }
 986
 987                 internal string CodeBehindSource {
 988                         get {
 989                                 if (srcIsLegacy)
 990                                         return null;
 991
 992                                 return src;
 993                         }
 994                 }
 995
 996                 internal string PartialClassName {
 997                         get { return partialClassName; }
 998                 }
 999
1000                 internal string CodeFileBaseClass {
1001                         get { return codeFileBaseClass; }
1002                 }
1003
1004                 internal string MetaResourceKey {
1005                         get { return metaResourceKey; }
1006                 }
1007
1008                 internal Type CodeFileBaseClassType
1009                 {
1010                         get { return codeFileBaseClassType; }
1011                 }
1012
1013                 internal List <UnknownAttributeDescriptor> UnknownMainAttributes
1014                 {
1015                         get { return unknownMainAttributes; }
1016                 }
1017
1018                 internal string Text {
1019                         get { return text; }
1020                         set { text = value; }
1021                 }
1022
1023                 internal Type BaseType {
1024                         get {
1025                                 if (baseType == null)
1026                                         SetBaseType (DefaultBaseTypeName);
1027
1028                                 return baseType;
1029                         }
1030                 }
1031
1032                 internal bool BaseTypeIsGlobal {
1033                         get { return baseTypeIsGlobal; }
1034                         set { baseTypeIsGlobal = value; }
1035                 }
1036
1037                 static long autoClassCounter = 0;
1038
1039                 internal string EncodeIdentifier (string value)
1040                 {
1041                         if (value == null || value.Length == 0 || CodeGenerator.IsValidLanguageIndependentIdentifier (value))
1042                                 return value;
1043
1044                         StringBuilder ret = new StringBuilder ();
1045
1046                         char ch = value [0];
1047                         switch (Char.GetUnicodeCategory (ch)) {
1048                                 case UnicodeCategory.LetterNumber:
1049                                 case UnicodeCategory.LowercaseLetter:
1050                                 case UnicodeCategory.TitlecaseLetter:
1051                                 case UnicodeCategory.UppercaseLetter:
1052                                 case UnicodeCategory.OtherLetter:
1053                                 case UnicodeCategory.ModifierLetter:
1054                                 case UnicodeCategory.ConnectorPunctuation:
1055                                         ret.Append (ch);
1056                                         break;
1057
1058                                 case UnicodeCategory.DecimalDigitNumber:
1059                                         ret.Append ('_');
1060                                         ret.Append (ch);
1061                                         break;
1062
1063                                 default:
1064                                         ret.Append ('_');
1065                                         break;
1066                         }
1067
1068                         for (int i = 1; i < value.Length; i++) {
1069                                 ch = value [i];
1070                                 switch (Char.GetUnicodeCategory (ch)) {
1071                                         case UnicodeCategory.LetterNumber:
1072                                         case UnicodeCategory.LowercaseLetter:
1073                                         case UnicodeCategory.TitlecaseLetter:
1074                                         case UnicodeCategory.UppercaseLetter:
1075                                         case UnicodeCategory.OtherLetter:
1076                                         case UnicodeCategory.ModifierLetter:
1077                                         case UnicodeCategory.ConnectorPunctuation:
1078                                         case UnicodeCategory.DecimalDigitNumber:
1079                                         case UnicodeCategory.NonSpacingMark:
1080                                         case UnicodeCategory.SpacingCombiningMark:
1081                                         case UnicodeCategory.Format:
1082                                                 ret.Append (ch);
1083                                                 break;
1084
1085                                         default:
1086                                                 ret.Append ('_');
1087                                                 break;
1088                                 }
1089                         }
1090
1091                         return ret.ToString ();
1092                 }
1093
1094                 internal string ClassName {
1095                         get {
1096                                 if (className != null)
1097                                         return className;
1098
1099                                 string physPath = HttpContext.Current.Request.PhysicalApplicationPath;
1100                                 string inFile;
1101
1102                                 if (String.IsNullOrEmpty (inputFile)) {
1103                                         inFile = null;
1104                                         using (StreamReader sr = Reader as StreamReader) {
1105                                                 if (sr != null) {
1106                                                         FileStream fr = sr.BaseStream as FileStream;
1107                                                         if (fr != null)
1108                                                                 inFile = fr.Name;
1109                                                 }
1110                                         }
1111                                 } else
1112                                         inFile = inputFile;
1113
1114                                 if (String.IsNullOrEmpty (inFile)) {
1115                                         // generate a unique class name
1116                                         long suffix;
1117                                         suffix = Interlocked.Increment (ref autoClassCounter);
1118                                         className = String.Format ("autoclass_nosource_{0:x}", suffix);
1119                                         return className;
1120                                 }
1121
1122                                 if (StrUtils.StartsWith (inFile, physPath))
1123                                         className = inputFile.Substring (physPath.Length).ToLower (Helpers.InvariantCulture);
1124                                 else
1125                                         className = Path.GetFileName (inputFile);
1126                                 className = EncodeIdentifier (className);
1127                                 return className;
1128                         }
1129                 }
1130
1131                 internal List <ServerSideScript> Scripts {
1132                         get {
1133                                 if (scripts == null)
1134                                         scripts = new List <ServerSideScript> ();
1135
1136                                 return scripts;
1137                         }
1138                 }
1139
1140                 internal Dictionary <string, bool> Imports {
1141                         get { return imports; }
1142                 }
1143
1144                 internal List <string> Interfaces {
1145                         get { return interfaces; }
1146                 }
1147
1148                 internal ArrayList Assemblies {
1149                         get {
1150                                 if (appAssemblyIndex != -1) {
1151                                         object o = assemblies [appAssemblyIndex];
1152                                         assemblies.RemoveAt (appAssemblyIndex);
1153                                         assemblies.Add (o);
1154                                         appAssemblyIndex = -1;
1155                                 }
1156
1157                                 return assemblies;
1158                         }
1159                 }
1160
1161                 internal RootBuilder RootBuilder {
1162                         get {
1163                                 if (rootBuilder != null)
1164                                         return rootBuilder;
1165                                 AspGenerator generator = AspGenerator;
1166                                 if (generator != null)
1167                                         rootBuilder = generator.RootBuilder;
1168
1169                                 return rootBuilder;
1170                         }
1171                         set { rootBuilder = value; }
1172                 }
1173
1174                 internal ArrayList Dependencies {
1175                         get { return dependencies; }
1176                         set { dependencies = value; }
1177                 }
1178
1179                 internal string CompilerOptions {
1180                         get { return compilerOptions; }
1181                 }
1182
1183                 internal string Language {
1184                         get { return language; }
1185                 }
1186
1187                 internal bool ImplicitLanguage {
1188                         get { return implicitLanguage; }
1189                 }
1190
1191                 internal bool StrictOn {
1192                         get { return strictOn; }
1193                 }
1194
1195                 internal bool ExplicitOn {
1196                         get { return explicitOn; }
1197                 }
1198
1199                 internal bool Debug {
1200                         get { return debug; }
1201                 }
1202
1203                 internal bool OutputCache {
1204                         get { return output_cache; }
1205                 }
1206
1207                 internal int OutputCacheDuration {
1208                         get { return oc_duration; }
1209                 }
1210
1211                 internal OutputCacheParsedParams OutputCacheParsedParameters {
1212                         get { return oc_parsed_params; }
1213                 }
1214
1215                 internal string OutputCacheSqlDependency {
1216                         get { return oc_sqldependency; }
1217                 }
1218
1219                 internal string OutputCacheCacheProfile {
1220                         get { return oc_cacheprofile; }
1221                 }
1222
1223                 internal string OutputCacheVaryByContentEncodings {
1224                         get { return oc_content_encodings; }
1225                 }
1226
1227                 internal bool OutputCacheNoStore {
1228                         get { return oc_nostore; }
1229                 }
1230
1231                 internal virtual TextReader Reader {
1232                         get { return null; }
1233                         set { /* no-op */ }
1234                 }
1235
1236                 internal string OutputCacheVaryByHeader {
1237                         get { return oc_header; }
1238                 }
1239
1240                 internal string OutputCacheVaryByCustom {
1241                         get { return oc_custom; }
1242                 }
1243
1244                 internal string OutputCacheVaryByControls {
1245                         get { return oc_controls; }
1246                 }
1247
1248                 internal bool OutputCacheShared {
1249                         get { return oc_shared; }
1250                 }
1251
1252                 internal OutputCacheLocation OutputCacheLocation {
1253                         get { return oc_location; }
1254                 }
1255
1256                 internal string OutputCacheVaryByParam {
1257                         get { return oc_param; }
1258                 }
1259
1260                 internal List <string> RegisteredTagNames {
1261                         get { return registeredTagNames; }
1262                 }
1263
1264                 internal PagesSection PagesConfig {
1265                         get { return GetConfigSection <PagesSection> ("system.web/pages") as PagesSection; }
1266                 }
1267
1268                 internal AspGenerator AspGenerator {
1269                         get;
1270                         set;
1271                 }
1272         }
1273 }