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
  39 namespace System.Web.UI
  40 {
  41         // CAS - no InheritanceDemand here as the class is sealed
  42         [AspNetHostingPermission (SecurityAction.LinkDemand, Level = AspNetHostingPermissionLevel.Minimal)]
  43         public sealed class PageParser : TemplateControlParser
  44         {
  45                 bool enableSessionState = true;
  46                 bool haveTrace;
  47                 bool trace;
  48                 bool notBuffer;
  49                 TraceMode tracemode;
  50                 bool readonlySessionState;
  51                 string responseEncoding;
  52                 string contentType;
  53                 int codepage = -1;
  54                 int lcid = -1;
  55                 string culture;
  56                 string uiculture;
  57                 string errorPage;
  58                 bool validateRequest;
  59                 string clientTarget;
  60                 Type baseType = typeof (Page);
  61
  62 #if NET_2_0
  63                 string masterPage;
  64                 Type masterType;
  65 #endif
  66
  67                 public PageParser ()
  68                 {
  69                 }
  70
  71                 internal PageParser (string virtualPath, string inputFile, HttpContext context)
  72                 {
  73                         Context = context;
  74                         BaseVirtualDir = UrlUtils.GetDirectory (virtualPath);
  75                         InputFile = inputFile;
  76                         SetBaseType (PagesConfig.PageBaseType);
  77                         AddApplicationAssembly ();
  78                 }
  79
  80                 public static IHttpHandler GetCompiledPageInstance (string virtualPath,
  81                                                                     string inputFile,
  82                                                                     HttpContext context)
  83                 {
  84                         PageParser pp = new PageParser (virtualPath, inputFile, context);
  85                         IHttpHandler h = (IHttpHandler) pp.GetCompiledInstance ();
  86                         return h;
  87                 }
  88
  89                 internal override void ProcessMainAttributes (Hashtable atts)
  90                 {
  91                         string enabless = GetString (atts, "EnableSessionState", PagesConfig.EnableSessionState);
  92                         if (enabless != null) {
  93                                 readonlySessionState = (String.Compare (enabless, "readonly", true) == 0);
  94                                 if (readonlySessionState == true || String.Compare (enabless, "true", true) == 0) {
  95                                         enableSessionState = true;
  96                                 } else if (String.Compare (enabless, "false", true) == 0) {
  97                                         enableSessionState = false;
  98                                 } else {
  99                                         ThrowParseException ("Invalid value for EnableSessionState: " + enabless);
 100                                 }
 101                         }
 102
 103                         string cp = GetString (atts, "CodePage", null);
 104                         if (cp != null) {
 105                                 if (responseEncoding != null)
 106                                         ThrowParseException ("CodePage and ResponseEncoding are " +
 107                                                              "mutually exclusive.");
 108
 109                                 int codepage = 0;
 110                                 try {
 111                                         codepage = (int) UInt32.Parse (cp);
 112                                 } catch {
 113                                         ThrowParseException ("Invalid value for CodePage: " + cp);
 114                                 }
 115
 116                                 try {
 117                                         Encoding.GetEncoding (codepage);
 118                                 } catch {
 119                                         ThrowParseException ("Unsupported codepage: " + cp);
 120                                 }
 121                         }
 122
 123                         responseEncoding = GetString (atts, "ResponseEncoding", null);
 124                         if (responseEncoding != null) {
 125                                 if (codepage != -1)
 126                                         ThrowParseException ("CodePage and ResponseEncoding are " +
 127                                                              "mutually exclusive.");
 128
 129                                 try {
 130                                         Encoding.GetEncoding (responseEncoding);
 131                                 } catch {
 132                                         ThrowParseException ("Unsupported encoding: " + responseEncoding);
 133                                 }
 134                         }
 135
 136                         contentType = GetString (atts, "ContentType", null);
 137
 138                         string lcidStr = GetString (atts, "LCID", null);
 139                         if (lcidStr != null) {
 140                                 try {
 141                                         lcid = (int) UInt32.Parse (lcidStr);
 142                                 } catch {
 143                                         ThrowParseException ("Invalid value for LCID: " + lcid);
 144                                 }
 145
 146                                 CultureInfo ci = null;
 147                                 try {
 148                                         ci = new CultureInfo (lcid);
 149                                 } catch {
 150                                         ThrowParseException ("Unsupported LCID: " + lcid);
 151                                 }
 152
 153                                 if (ci.IsNeutralCulture) {
 154                                         string suggestedCulture = SuggestCulture (ci.Name);
 155                                         string fmt = "LCID attribute must be set to a non-neutral Culture.";
 156                                         if (suggestedCulture != null) {
 157                                                 ThrowParseException (fmt + " Please try one of these: " +
 158                                                                      suggestedCulture);
 159                                         } else {
 160                                                 ThrowParseException (fmt);
 161                                         }
 162                                 }
 163                         }
 164
 165                         culture = GetString (atts, "Culture", null);
 166                         if (culture != null) {
 167                                 if (lcidStr != null)
 168                                         ThrowParseException ("Culture and LCID are mutually exclusive.");
 169
 170                                 CultureInfo ci = null;
 171                                 try {
 172                                         ci = new CultureInfo (culture);
 173                                 } catch {
 174                                         ThrowParseException ("Unsupported Culture: " + culture);
 175                                 }
 176
 177                                 if (ci.IsNeutralCulture) {
 178                                         string suggestedCulture = SuggestCulture (culture);
 179                                         string fmt = "Culture attribute must be set to a non-neutral Culture.";
 180                                         if (suggestedCulture != null)
 181                                                 ThrowParseException (fmt +
 182                                                                 " Please try one of these: " + suggestedCulture);
 183                                         else
 184                                                 ThrowParseException (fmt);
 185                                 }
 186                         }
 187
 188                         uiculture = GetString (atts, "UICulture", null);
 189                         if (uiculture != null) {
 190                                 CultureInfo ci = null;
 191                                 try {
 192                                         ci = new CultureInfo (uiculture);
 193                                 } catch {
 194                                         ThrowParseException ("Unsupported Culture: " + uiculture);
 195                                 }
 196
 197                                 if (ci.IsNeutralCulture) {
 198                                         string suggestedCulture = SuggestCulture (uiculture);
 199                                         string fmt = "UICulture attribute must be set to a non-neutral Culture.";
 200                                         if (suggestedCulture != null)
 201                                                 ThrowParseException (fmt +
 202                                                                 " Please try one of these: " + suggestedCulture);
 203                                         else
 204                                                 ThrowParseException (fmt);
 205                                 }
 206                         }
 207
 208                         string tracestr = GetString (atts, "Trace", null);
 209                         if (tracestr != null) {
 210                                 haveTrace = true;
 211                                 atts ["Trace"] = tracestr;
 212                                 trace = GetBool (atts, "Trace", false);
 213                         }
 214
 215                         string tracemodes = GetString (atts, "TraceMode", null);
 216                         if (tracemodes != null) {
 217                                 bool valid = true;
 218                                 try {
 219                                         tracemode = (TraceMode) Enum.Parse (typeof (TraceMode), tracemodes, false);
 220                                 } catch {
 221                                         valid = false;
 222                                 }
 223
 224                                 if (!valid || tracemode == TraceMode.Default)
 225                                         ThrowParseException ("The 'tracemode' attribute is case sensitive and must be " +
 226                                                         "one of the following values: SortByTime, SortByCategory.");
 227                         }
 228
 229                         errorPage = GetString (atts, "ErrorPage", null);
 230                         validateRequest = GetBool (atts, "ValidateRequest", PagesConfig.ValidateRequest);
 231                         clientTarget = GetString (atts, "ClientTarget", null);
 232                         if (clientTarget != null) {
 233                                 NameValueCollection coll;
 234                                 coll = (NameValueCollection) Context.GetConfig ("system.web/clientTarget");
 235                                 if (coll == null || coll [clientTarget] == null) {
 236                                         ThrowParseException (String.Format (
 237                                                         "ClientTarget '{0}' is an invalid alias. See the " +
 238                                                         "documentation for <clientTarget> config. section.",
 239                                                         clientTarget));
 240                                 }
 241                                 clientTarget = (string) coll [clientTarget];
 242                         }
 243
 244                         notBuffer = !GetBool (atts, "Buffer", true);
 245
 246 #if NET_2_0
 247                         masterPage = GetString (atts, "MasterPageFile", null);
 248
 249                         // Make sure the page exists
 250                         if (masterPage != null)
 251                                 MasterPageParser.GetCompiledMasterType (masterPage, MapPath (masterPage), HttpContext.Current);
 252 #endif
 253                         // Ignored by now
 254                         GetString (atts, "EnableViewStateMac", null);
 255                         GetString (atts, "SmartNavigation", null);
 256
 257                         base.ProcessMainAttributes (atts);
 258                 }
 259
 260 #if NET_2_0
 261                 internal override void AddDirective (string directive, Hashtable atts)
 262                 {
 263                         if (String.Compare ("MasterType", directive, true) == 0) {
 264                                 string type = GetString (atts, "TypeName", null);
 265                                 if (type != null) {
 266                                         masterType = LoadType (type);
 267                                         if (masterType == null)
 268                                                 ThrowParseException ("Could not load type '" + type + "'.");
 269                                 } else {
 270                                         string path = GetString (atts, "VirtualPath", null);
 271                                         if (path != null)
 272                                                 masterType = MasterPageParser.GetCompiledMasterType (path, MapPath (path), HttpContext.Current);
 273                                         else
 274                                                 ThrowParseException ("The MasterType directive must have either a TypeName or a VirtualPath attribute.");
 275                                 }
 276                                 AddAssembly (masterType.Assembly, true);
 277                         }
 278                         else
 279                                 base.AddDirective (directive, atts);
 280                 }
 281 #endif
 282
 283                 static string SuggestCulture (string culture)
 284                 {
 285                         string retval = null;
 286                         foreach (CultureInfo ci in CultureInfo.GetCultures (CultureTypes.SpecificCultures)) {
 287                                 if (ci.Name.StartsWith (culture))
 288                                         retval += ci.Name + " ";
 289                         }
 290                         return retval;
 291                 }
 292
 293                 protected override Type CompileIntoType ()
 294                 {
 295                         AspGenerator generator = new AspGenerator (this);
 296                         return generator.GetCompiledType ();
 297                 }
 298
 299                 internal bool EnableSessionState {
 300                         get { return enableSessionState; }
 301                 }
 302
 303                 internal bool ReadOnlySessionState {
 304                         get { return readonlySessionState; }
 305                 }
 306
 307                 internal bool HaveTrace {
 308                         get { return haveTrace; }
 309                 }
 310
 311                 internal bool Trace {
 312                         get { return trace; }
 313                 }
 314
 315                 internal TraceMode TraceMode {
 316                         get { return tracemode; }
 317                 }
 318
 319                 internal override Type DefaultBaseType {
 320                         get { return baseType; }
 321                 }
 322
 323                 internal override string DefaultBaseTypeName {
 324                         get { return "System.Web.UI.Page"; }
 325                 }
 326
 327                 internal override string DefaultDirectiveName {
 328                         get { return "page"; }
 329                 }
 330
 331                 internal string ResponseEncoding {
 332                         get { return responseEncoding; }
 333                 }
 334
 335                 internal string ContentType {
 336                         get { return contentType; }
 337                 }
 338
 339                 internal int CodePage {
 340                         get { return codepage; }
 341                 }
 342
 343                 internal string Culture {
 344                         get { return culture; }
 345                 }
 346
 347                 internal string UICulture {
 348                         get { return uiculture; }
 349                 }
 350
 351                 internal int LCID {
 352                         get { return lcid; }
 353                 }
 354
 355                 internal string ErrorPage {
 356                         get { return errorPage; }
 357                 }
 358
 359                 internal bool ValidateRequest {
 360                         get { return validateRequest; }
 361                 }
 362
 363                 internal string ClientTarget {
 364                         get { return clientTarget; }
 365                 }
 366
 367                 internal bool NotBuffer {
 368                         get { return notBuffer; }
 369                 }
 370
 371 #if NET_2_0
 372                 internal string MasterPageFile {
 373                         get { return masterPage; }
 374                 }
 375
 376                 internal Type MasterType {
 377                         get { return masterType; }
 378                 }
 379 #endif
 380         }
 381 }
 382