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