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

   1 //
   2 // System.Web.UI.PageParser
   3 //
   4 // Authors:
   5 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   6 //
   7 // (C) 2002,2003 Ximian, Inc (http://www.ximian.com)
   8 // Copyright (C) 2005 Novell, Inc (http://www.novell.com)
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29
  30 using System.Collections;
  31 using System.Collections.Specialized;
  32 using System.Globalization;
  33 using System.Security.Permissions;
  34 using System.Text;
  35 using System.Web.Compilation;
  36 using System.Web.Configuration;
  37 using System.Web.Util;
  38 using System.IO;
  39
  40 namespace System.Web.UI
  41 {
  42         // CAS - no InheritanceDemand here as the class is sealed
  43         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  44         public sealed class PageParser : TemplateControlParser
  45         {
  46                 bool enableSessionState = true;
  47                 bool haveTrace;
  48                 bool trace;
  49                 bool notBuffer;
  50                 TraceMode tracemode;
  51                 bool readonlySessionState;
  52                 string responseEncoding;
  53                 string contentType;
  54                 int codepage = -1;
  55                 int lcid = -1;
  56                 string culture;
  57                 string uiculture;
  58                 string errorPage;
  59                 bool validateRequest;
  60                 string clientTarget;
  61                 Type baseType = typeof (Page);
  62
  63 #if NET_2_0
  64                 string masterPage;
  65                 Type masterType;
  66                 string title;
  67                 string theme;
  68                 string styleSheetTheme;
  69                 bool enable_event_validation;
  70 #endif
  71
  72                 public PageParser ()
  73                 {
  74                 }
  75
  76                 internal PageParser (string virtualPath, string inputFile, HttpContext context)
  77                 {
  78                         Context = context;
  79                         BaseVirtualDir = UrlUtils.GetDirectory (virtualPath);
  80                         InputFile = inputFile;
  81                         SetBaseType (PagesConfig.PageBaseType);
  82                         AddApplicationAssembly ();
  83                 }
  84
  85 #if NET_2_0
  86                 internal PageParser (string virtualPath, TextReader reader, HttpContext context)
  87                 {
  88                         Context = context;
  89                         BaseVirtualDir = UrlUtils.GetDirectory (virtualPath);
  90                         Reader = reader;
  91                         SetBaseType (PagesConfig.PageBaseType);
  92                         AddApplicationAssembly ();
  93                 }
  94 #endif
  95
  96                 public static IHttpHandler GetCompiledPageInstance (string virtualPath,
  97                                                                     string inputFile,
  98                                                                     HttpContext context)
  99                 {
 100                         PageParser pp = new PageParser (virtualPath, inputFile, context);
 101                         IHttpHandler h = (IHttpHandler) pp.GetCompiledInstance ();
 102                         return h;
 103                 }
 104
 105                 internal override void ProcessMainAttributes (Hashtable atts)
 106                 {
 107                         string enabless = GetString (atts, "EnableSessionState",
 108 #if NET_2_0
 109                                                      PagesConfig.EnableSessionState.ToString()
 110 #else
 111                                                      PagesConfig.EnableSessionState
 112 #endif
 113                                                      );
 114                         if (enabless != null) {
 115                                 readonlySessionState = (String.Compare (enabless, "readonly", true) == 0);
 116                                 if (readonlySessionState == true || String.Compare (enabless, "true", true) == 0) {
 117                                         enableSessionState = true;
 118                                 } else if (String.Compare (enabless, "false", true) == 0) {
 119                                         enableSessionState = false;
 120                                 } else {
 121                                         ThrowParseException ("Invalid value for EnableSessionState: " + enabless);
 122                                 }
 123                         }
 124
 125                         string cp = GetString (atts, "CodePage", null);
 126                         if (cp != null) {
 127                                 if (responseEncoding != null)
 128                                         ThrowParseException ("CodePage and ResponseEncoding are " +
 129                                                              "mutually exclusive.");
 130
 131                                 int codepage = 0;
 132                                 try {
 133                                         codepage = (int) UInt32.Parse (cp);
 134                                 } catch {
 135                                         ThrowParseException ("Invalid value for CodePage: " + cp);
 136                                 }
 137
 138                                 try {
 139                                         Encoding.GetEncoding (codepage);
 140                                 } catch {
 141                                         ThrowParseException ("Unsupported codepage: " + cp);
 142                                 }
 143                         }
 144
 145                         responseEncoding = GetString (atts, "ResponseEncoding", null);
 146                         if (responseEncoding != null) {
 147                                 if (codepage != -1)
 148                                         ThrowParseException ("CodePage and ResponseEncoding are " +
 149                                                              "mutually exclusive.");
 150
 151                                 try {
 152                                         Encoding.GetEncoding (responseEncoding);
 153                                 } catch {
 154                                         ThrowParseException ("Unsupported encoding: " + responseEncoding);
 155                                 }
 156                         }
 157
 158                         contentType = GetString (atts, "ContentType", null);
 159
 160                         string lcidStr = GetString (atts, "LCID", null);
 161                         if (lcidStr != null) {
 162                                 try {
 163                                         lcid = (int) UInt32.Parse (lcidStr);
 164                                 } catch {
 165                                         ThrowParseException ("Invalid value for LCID: " + lcid);
 166                                 }
 167
 168                                 CultureInfo ci = null;
 169                                 try {
 170                                         ci = new CultureInfo (lcid);
 171                                 } catch {
 172                                         ThrowParseException ("Unsupported LCID: " + lcid);
 173                                 }
 174
 175                                 if (ci.IsNeutralCulture) {
 176                                         string suggestedCulture = SuggestCulture (ci.Name);
 177                                         string fmt = "LCID attribute must be set to a non-neutral Culture.";
 178                                         if (suggestedCulture != null) {
 179                                                 ThrowParseException (fmt + " Please try one of these: " +
 180                                                                      suggestedCulture);
 181                                         } else {
 182                                                 ThrowParseException (fmt);
 183                                         }
 184                                 }
 185                         }
 186
 187                         culture = GetString (atts, "Culture", null);
 188                         if (culture != null) {
 189                                 if (lcidStr != null)
 190                                         ThrowParseException ("Culture and LCID are mutually exclusive.");
 191
 192                                 CultureInfo ci = null;
 193                                 try {
 194 #if NET_2_0
 195                                         if (!culture.StartsWith ("auto"))
 196 #endif
 197                                                 ci = new CultureInfo (culture);
 198                                 } catch {
 199                                         ThrowParseException ("Unsupported Culture: " + culture);
 200                                 }
 201
 202                                 if (ci != null && ci.IsNeutralCulture) {
 203                                         string suggestedCulture = SuggestCulture (culture);
 204                                         string fmt = "Culture attribute must be set to a non-neutral Culture.";
 205                                         if (suggestedCulture != null)
 206                                                 ThrowParseException (fmt +
 207                                                                 " Please try one of these: " + suggestedCulture);
 208                                         else
 209                                                 ThrowParseException (fmt);
 210                                 }
 211                         }
 212
 213                         uiculture = GetString (atts, "UICulture", null);
 214                         if (uiculture != null) {
 215                                 CultureInfo ci = null;
 216                                 try {
 217 #if NET_2_0
 218                                         if (!uiculture.StartsWith ("auto"))
 219 #endif
 220                                                 ci = new CultureInfo (uiculture);
 221                                 } catch {
 222                                         ThrowParseException ("Unsupported Culture: " + uiculture);
 223                                 }
 224
 225                                 if (ci != null && ci.IsNeutralCulture) {
 226                                         string suggestedCulture = SuggestCulture (uiculture);
 227                                         string fmt = "UICulture attribute must be set to a non-neutral Culture.";
 228                                         if (suggestedCulture != null)
 229                                                 ThrowParseException (fmt +
 230                                                                 " Please try one of these: " + suggestedCulture);
 231                                         else
 232                                                 ThrowParseException (fmt);
 233                                 }
 234                         }
 235
 236                         string tracestr = GetString (atts, "Trace", null);
 237                         if (tracestr != null) {
 238                                 haveTrace = true;
 239                                 atts ["Trace"] = tracestr;
 240                                 trace = GetBool (atts, "Trace", false);
 241                         }
 242
 243                         string tracemodes = GetString (atts, "TraceMode", null);
 244                         if (tracemodes != null) {
 245                                 bool valid = true;
 246                                 try {
 247                                         tracemode = (TraceMode) Enum.Parse (typeof (TraceMode), tracemodes, false);
 248                                 } catch {
 249                                         valid = false;
 250                                 }
 251
 252                                 if (!valid || tracemode == TraceMode.Default)
 253                                         ThrowParseException ("The 'tracemode' attribute is case sensitive and must be " +
 254                                                         "one of the following values: SortByTime, SortByCategory.");
 255                         }
 256
 257                         errorPage = GetString (atts, "ErrorPage", null);
 258                         validateRequest = GetBool (atts, "ValidateRequest", PagesConfig.ValidateRequest);
 259                         clientTarget = GetString (atts, "ClientTarget", null);
 260                         if (clientTarget != null) {
 261 #if NET_2_0
 262                                 ClientTargetSection sec = (ClientTargetSection)WebConfigurationManager.GetSection ("system.web/clientTarget");
 263                                 if (sec.ClientTargets[clientTarget] == null) {
 264                                         ThrowParseException (String.Format (
 265                                                         "ClientTarget '{0}' is an invalid alias. See the " +
 266                                                         "documentation for <clientTarget> config. section.",
 267                                                         clientTarget));
 268                                 }
 269                                 clientTarget = sec.ClientTargets[clientTarget].UserAgent;
 270 #else
 271                                 NameValueCollection coll;
 272                                 coll = (NameValueCollection) Context.GetConfig ("system.web/clientTarget");
 273                                 if (coll == null || coll [clientTarget] == null) {
 274                                         ThrowParseException (String.Format (
 275                                                         "ClientTarget '{0}' is an invalid alias. See the " +
 276                                                         "documentation for <clientTarget> config. section.",
 277                                                         clientTarget));
 278                                 }
 279                                 clientTarget = (string) coll [clientTarget];
 280 #endif
 281                         }
 282
 283                         notBuffer = !GetBool (atts, "Buffer", true);
 284
 285 #if NET_2_0
 286                         masterPage = GetString (atts, "MasterPageFile", null);
 287
 288                         // Make sure the page exists
 289                         if (masterPage != null)
 290                                 MasterPageParser.GetCompiledMasterType (masterPage, MapPath (masterPage), HttpContext.Current);
 291
 292                         title = GetString(atts, "Title", null);
 293
 294                         theme = GetString (atts, "Theme", null);
 295                         styleSheetTheme = GetString (atts, "StyleSheetTheme", null);
 296                         enable_event_validation = GetBool (atts, "EnableEventValidation", true);
 297 #endif
 298                         // Ignored by now
 299                         GetString (atts, "EnableViewStateMac", null);
 300                         GetString (atts, "SmartNavigation", null);
 301
 302                         base.ProcessMainAttributes (atts);
 303                 }
 304
 305 #if NET_2_0
 306                 internal override void AddDirective (string directive, Hashtable atts)
 307                 {
 308                         if (String.Compare ("MasterType", directive, true) == 0) {
 309                                 string type = GetString (atts, "TypeName", null);
 310                                 if (type != null) {
 311                                         masterType = LoadType (type);
 312                                         if (masterType == null)
 313                                                 ThrowParseException ("Could not load type '" + type + "'.");
 314                                 } else {
 315                                         string path = GetString (atts, "VirtualPath", null);
 316                                         if (path != null)
 317                                                 masterType = MasterPageParser.GetCompiledMasterType (path, MapPath (path), HttpContext.Current);
 318                                         else
 319                                                 ThrowParseException ("The MasterType directive must have either a TypeName or a VirtualPath attribute.");
 320                                 }
 321                                 AddAssembly (masterType.Assembly, true);
 322                         }
 323                         else
 324                                 base.AddDirective (directive, atts);
 325                 }
 326 #endif
 327
 328                 static string SuggestCulture (string culture)
 329                 {
 330                         string retval = null;
 331                         foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.SpecificCultures)) {
 332                                 if (ci.Name.StartsWith (culture))
 333                                         retval += ci.Name + " ";
 334                         }
 335                         return retval;
 336                 }
 337
 338                 protected override Type CompileIntoType ()
 339                 {
 340                         AspGenerator generator = new AspGenerator (this);
 341                         return generator.GetCompiledType ();
 342                 }
 343
 344                 internal bool EnableSessionState {
 345                         get { return enableSessionState; }
 346                 }
 347
 348                 internal bool ReadOnlySessionState {
 349                         get { return readonlySessionState; }
 350                 }
 351
 352                 internal bool HaveTrace {
 353                         get { return haveTrace; }
 354                 }
 355
 356                 internal bool Trace {
 357                         get { return trace; }
 358                 }
 359
 360                 internal TraceMode TraceMode {
 361                         get { return tracemode; }
 362                 }
 363
 364                 internal override Type DefaultBaseType {
 365                         get { return baseType; }
 366                 }
 367
 368                 internal override string DefaultBaseTypeName {
 369                         get { return "System.Web.UI.Page"; }
 370                 }
 371
 372                 internal override string DefaultDirectiveName {
 373                         get { return "page"; }
 374                 }
 375
 376                 internal string ResponseEncoding {
 377                         get { return responseEncoding; }
 378                 }
 379
 380                 internal string ContentType {
 381                         get { return contentType; }
 382                 }
 383
 384                 internal int CodePage {
 385                         get { return codepage; }
 386                 }
 387
 388                 internal string Culture {
 389                         get { return culture; }
 390                 }
 391
 392                 internal string UICulture {
 393                         get { return uiculture; }
 394                 }
 395
 396                 internal int LCID {
 397                         get { return lcid; }
 398                 }
 399
 400                 internal string ErrorPage {
 401                         get { return errorPage; }
 402                 }
 403
 404                 internal bool ValidateRequest {
 405                         get { return validateRequest; }
 406                 }
 407
 408                 internal string ClientTarget {
 409                         get { return clientTarget; }
 410                 }
 411
 412                 internal bool NotBuffer {
 413                         get { return notBuffer; }
 414                 }
 415
 416 #if NET_2_0
 417                 internal string Theme {
 418                         get { return theme; }
 419                 }
 420
 421                 internal string StyleSheetTheme {
 422                         get { return styleSheetTheme; }
 423                 }
 424
 425                 internal string MasterPageFile {
 426                         get { return masterPage; }
 427                 }
 428
 429                 internal Type MasterType {
 430                         get { return masterType; }
 431                 }
 432
 433                 internal string Title {
 434                         get { return title; }
 435                 }
 436
 437                 internal bool EnableEventValidation {
 438                         get { return enable_event_validation; }
 439                 }
 440 #endif
 441         }
 442 }
 443