mcs/class/System.Web/System.Web.Configuration_2.0/WebConfigurationManager.cs

   1 //
   2 // System.Web.Configuration.WebConfigurationManager.cs
   3 //
   4 // Authors:
   5 //      Lluis Sanchez Gual (lluis@novell.com)
   6 //      Chris Toshok (toshok@ximian.com)
   7 //      Marek Habersack <mhabersack@novell.com>
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28 // Copyright (C) 2005-2009 Novell, Inc (http://www.novell.com)
  29 //
  30
  31 #if NET_2_0
  32
  33 using System;
  34 using System.IO;
  35 using System.Collections;
  36 using System.Collections.Generic;
  37 using System.Collections.Specialized;
  38 using System.Reflection;
  39 #if MONOWEB_DEP
  40 using Mono.Web.Util;
  41 #endif
  42 using System.Xml;
  43 using System.Configuration;
  44 using System.Configuration.Internal;
  45 using _Configuration = System.Configuration.Configuration;
  46 using System.Web.Util;
  47 using System.Threading;
  48
  49 namespace System.Web.Configuration {
  50
  51         public static class WebConfigurationManager
  52         {
  53                 const int SAVE_LOCATIONS_CHECK_INTERVAL = 6000; // milliseconds
  54
  55                 static readonly char[] pathTrimChars = { '/' };
  56                 static readonly object suppressAppReloadLock = new object ();
  57                 static readonly object saveLocationsCacheLock = new object ();
  58                 static readonly ReaderWriterLockSlim sectionCacheLock;
  59
  60 #if !TARGET_J2EE
  61                 static IInternalConfigConfigurationFactory configFactory;
  62                 static Hashtable configurations = Hashtable.Synchronized (new Hashtable ());
  63                 static Dictionary <int, object> sectionCache = new Dictionary <int, object> ();
  64                 static Hashtable configPaths = Hashtable.Synchronized (new Hashtable ());
  65                 static bool suppressAppReload;
  66 #else
  67                 const string AppSettingsKey = "WebConfigurationManager.AppSettings";
  68
  69                 static internal IInternalConfigConfigurationFactory configFactory
  70                 {
  71                         get{
  72                                 IInternalConfigConfigurationFactory factory = (IInternalConfigConfigurationFactory)AppDomain.CurrentDomain.GetData("WebConfigurationManager.configFactory");
  73                                 if (factory == null){
  74                                         lock (AppDomain.CurrentDomain){
  75                                                 object initialized = AppDomain.CurrentDomain.GetData("WebConfigurationManager.configFactory.initialized");
  76                                                 if (initialized == null){
  77                                                         PropertyInfo prop = typeof(ConfigurationManager).GetProperty("ConfigurationFactory", BindingFlags.Static | BindingFlags.NonPublic);
  78                                                         if (prop != null){
  79                                                                 factory = prop.GetValue(null, null) as IInternalConfigConfigurationFactory;
  80                                                                 configFactory = factory;
  81                                                         }
  82                                                 }
  83                                         }
  84                                 }
  85                                 return factory != null ? factory : configFactory;
  86                         }
  87                         set{
  88                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configFactory", value);
  89                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configFactory.initialized", true);
  90                         }
  91                 }
  92
  93                 static internal Hashtable configurations
  94                 {
  95                         get{
  96                                 Hashtable table = (Hashtable)AppDomain.CurrentDomain.GetData("WebConfigurationManager.configurations");
  97                                 if (table == null){
  98                                         lock (AppDomain.CurrentDomain){
  99                                                 object initialized = AppDomain.CurrentDomain.GetData("WebConfigurationManager.configurations.initialized");
 100                                                 if (initialized == null){
 101                                                         table = Hashtable.Synchronized (new Hashtable (StringComparer.OrdinalIgnoreCase));
 102                                                         configurations = table;
 103                                                 }
 104                                         }
 105                                 }
 106                                 return table != null ? table : configurations;
 107
 108                         }
 109                         set{
 110                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configurations", value);
 111                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configurations.initialized", true);
 112                         }
 113                 }
 114
 115                 static Dictionary <int, object> sectionCache
 116                 {
 117                         get
 118                         {
 119                                 Dictionary <int, object> sectionCache = AppDomain.CurrentDomain.GetData ("sectionCache") as Dictionary <int, object>;
 120                                 if (sectionCache == null) {
 121                                         sectionCache = new Dictionary <int, object> ();
 122                                         AppDomain.CurrentDomain.SetData ("sectionCache", sectionCache);
 123                                 }
 124                                 return sectionCache;
 125                         }
 126                         set
 127                         {
 128                                 AppDomain.CurrentDomain.SetData ("sectionCache", value);
 129                         }
 130                 }
 131
 132                 static internal Hashtable configPaths
 133                 {
 134                         get{
 135                                 Hashtable table = (Hashtable)AppDomain.CurrentDomain.GetData("WebConfigurationManager.configPaths");
 136                                 if (table == null){
 137                                         lock (AppDomain.CurrentDomain){
 138                                                 object initialized = AppDomain.CurrentDomain.GetData("WebConfigurationManager.configPaths.initialized");
 139                                                 if (initialized == null){
 140                                                         table = Hashtable.Synchronized (new Hashtable (StringComparer.OrdinalIgnoreCase));
 141                                                         configPaths = table;
 142                                                 }
 143                                         }
 144                                 }
 145                                 return table != null ? table : configPaths;
 146
 147                         }
 148                         set{
 149                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configPaths", value);
 150                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.configPaths.initialized", true);
 151                         }
 152                 }
 153 #endif
 154                 static Dictionary <string, DateTime> saveLocationsCache;
 155                 static Timer saveLocationsTimer;
 156
 157                 static ArrayList extra_assemblies = null;
 158                 static internal ArrayList ExtraAssemblies {
 159                         get {
 160                                 if (extra_assemblies == null)
 161                                         extra_assemblies = new ArrayList();
 162                                 return extra_assemblies;
 163                         }
 164                 }
 165
 166                 static bool hasConfigErrors = false;
 167                 static object hasConfigErrorsLock = new object ();
 168                 static internal bool HasConfigErrors {
 169                         get {
 170                                 lock (hasConfigErrorsLock) {
 171                                         return hasConfigErrors;
 172                                 }
 173                         }
 174                 }
 175
 176                 static WebConfigurationManager ()
 177                 {
 178                         configFactory = ConfigurationManager.ConfigurationFactory;
 179                         _Configuration.SaveStart += ConfigurationSaveHandler;
 180                         _Configuration.SaveEnd += ConfigurationSaveHandler;
 181
 182                         // Part of fix for bug #491531
 183                         Type type = Type.GetType ("System.Configuration.CustomizableFileSettingsProvider, System", false);
 184                         if (type != null) {
 185                                 FieldInfo fi = type.GetField ("webConfigurationFileMapType", BindingFlags.Static | BindingFlags.NonPublic);
 186                                 if (fi != null && fi.FieldType == Type.GetType ("System.Type"))
 187                                         fi.SetValue (null, typeof (ApplicationSettingsConfigurationFileMap));
 188                         }
 189
 190                         sectionCacheLock = new ReaderWriterLockSlim ();
 191                 }
 192
 193                 static void ReenableWatcherOnConfigLocation (object state)
 194                 {
 195                         string path = state as string;
 196                         if (String.IsNullOrEmpty (path))
 197                                 return;
 198
 199                         DateTime lastWrite;
 200                         lock (saveLocationsCacheLock) {
 201                                 if (!saveLocationsCache.TryGetValue (path, out lastWrite))
 202                                         lastWrite = DateTime.MinValue;
 203                         }
 204
 205                         DateTime now = DateTime.Now;
 206                         if (lastWrite == DateTime.MinValue || now.Subtract (lastWrite).TotalMilliseconds >= SAVE_LOCATIONS_CHECK_INTERVAL) {
 207                                 saveLocationsTimer.Dispose ();
 208                                 saveLocationsTimer = null;
 209                                 HttpApplicationFactory.EnableWatcher (VirtualPathUtility.RemoveTrailingSlash (HttpRuntime.AppDomainAppPath), "?eb.?onfig");
 210                         } else
 211                                 saveLocationsTimer.Change (SAVE_LOCATIONS_CHECK_INTERVAL, SAVE_LOCATIONS_CHECK_INTERVAL);
 212                 }
 213
 214                 static void ConfigurationSaveHandler (_Configuration sender, ConfigurationSaveEventArgs args)
 215                 {
 216                         bool locked = false;
 217                         try {
 218                                 sectionCacheLock.EnterWriteLock ();
 219                                 locked = true;
 220                                 sectionCache.Clear ();
 221                         } finally {
 222                                 if (locked)
 223                                         sectionCacheLock.ExitWriteLock ();
 224                         }
 225
 226                         lock (suppressAppReloadLock) {
 227                                 string rootConfigPath = WebConfigurationHost.GetWebConfigFileName (HttpRuntime.AppDomainAppPath);
 228                                 if (String.Compare (args.StreamPath, rootConfigPath, StringComparison.OrdinalIgnoreCase) == 0) {
 229                                         SuppressAppReload (args.Start);
 230                                         if (args.Start) {
 231                                                 HttpApplicationFactory.DisableWatcher (VirtualPathUtility.RemoveTrailingSlash (HttpRuntime.AppDomainAppPath), "?eb.?onfig");
 232
 233                                                 lock (saveLocationsCacheLock) {
 234                                                         if (saveLocationsCache == null)
 235                                                                 saveLocationsCache = new Dictionary <string, DateTime> (StringComparer.Ordinal);
 236                                                         if (saveLocationsCache.ContainsKey (rootConfigPath))
 237                                                                 saveLocationsCache [rootConfigPath] = DateTime.Now;
 238                                                         else
 239                                                                 saveLocationsCache.Add (rootConfigPath, DateTime.Now);
 240
 241                                                         if (saveLocationsTimer == null)
 242                                                                 saveLocationsTimer = new Timer (ReenableWatcherOnConfigLocation,
 243                                                                                                 rootConfigPath,
 244                                                                                                 SAVE_LOCATIONS_CHECK_INTERVAL,
 245                                                                                                 SAVE_LOCATIONS_CHECK_INTERVAL);
 246                                                 }
 247                                         }
 248                                 }
 249                         }
 250                 }
 251
 252                 public static _Configuration OpenMachineConfiguration ()
 253                 {
 254                         return ConfigurationManager.OpenMachineConfiguration ();
 255                 }
 256
 257                 [MonoLimitation ("locationSubPath is not handled")]
 258                 public static _Configuration OpenMachineConfiguration (string locationSubPath)
 259                 {
 260                         return OpenMachineConfiguration ();
 261                 }
 262
 263                 [MonoLimitation("Mono does not support remote configuration")]
 264                 public static _Configuration OpenMachineConfiguration (string locationSubPath,
 265                                                                        string server)
 266                 {
 267                         if (server == null)
 268                                 return OpenMachineConfiguration (locationSubPath);
 269
 270                         throw new NotSupportedException ("Mono doesn't support remote configuration");
 271                 }
 272
 273                 [MonoLimitation("Mono does not support remote configuration")]
 274                 public static _Configuration OpenMachineConfiguration (string locationSubPath,
 275                                                                        string server,
 276                                                                        IntPtr userToken)
 277                 {
 278                         if (server == null)
 279                                 return OpenMachineConfiguration (locationSubPath);
 280                         throw new NotSupportedException ("Mono doesn't support remote configuration");
 281                 }
 282
 283                 [MonoLimitation("Mono does not support remote configuration")]
 284                 public static _Configuration OpenMachineConfiguration (string locationSubPath,
 285                                                                        string server,
 286                                                                        string userName,
 287                                                                        string password)
 288                 {
 289                         if (server == null)
 290                                 return OpenMachineConfiguration (locationSubPath);
 291                         throw new NotSupportedException ("Mono doesn't support remote configuration");
 292                 }
 293
 294                 public static _Configuration OpenWebConfiguration (string path)
 295                 {
 296                         return OpenWebConfiguration (path, null, null, null, null, null);
 297                 }
 298
 299                 public static _Configuration OpenWebConfiguration (string path, string site)
 300                 {
 301                         return OpenWebConfiguration (path, site, null, null, null, null);
 302                 }
 303
 304                 public static _Configuration OpenWebConfiguration (string path, string site, string locationSubPath)
 305                 {
 306                         return OpenWebConfiguration (path, site, locationSubPath, null, null, null);
 307                 }
 308
 309                 public static _Configuration OpenWebConfiguration (string path, string site, string locationSubPath, string server)
 310                 {
 311                         return OpenWebConfiguration (path, site, locationSubPath, server, null, null);
 312                 }
 313
 314                 public static _Configuration OpenWebConfiguration (string path, string site, string locationSubPath, string server, IntPtr userToken)
 315                 {
 316                         return OpenWebConfiguration (path, site, locationSubPath, server, null, null);
 317                 }
 318
 319                 public static _Configuration OpenWebConfiguration (string path, string site, string locationSubPath, string server, string userName, string password)
 320                 {
 321                         return OpenWebConfiguration (path, site, locationSubPath, server, null, null, false);
 322                 }
 323
 324                 static _Configuration OpenWebConfiguration (string path, string site, string locationSubPath, string server, string userName, string password, bool fweb)
 325                 {
 326                         if (String.IsNullOrEmpty (path))
 327                                 path = "/";
 328
 329                         if (!fweb && !String.IsNullOrEmpty (path))
 330                                 path = FindWebConfig (path);
 331
 332                         string confKey = path + site + locationSubPath + server + userName + password;
 333                         _Configuration conf = null;
 334                         conf = (_Configuration) configurations [confKey];
 335                         if (conf == null) {
 336                                 try {
 337                                         conf = ConfigurationFactory.Create (typeof (WebConfigurationHost), null, path, site, locationSubPath, server, userName, password);
 338                                         configurations [confKey] = conf;
 339                                 } catch (Exception ex) {
 340                                         lock (hasConfigErrorsLock) {
 341                                                 hasConfigErrors = true;
 342                                         }
 343                                         throw ex;
 344                                 }
 345                         }
 346                         return conf;
 347                 }
 348
 349                 public static _Configuration OpenMappedWebConfiguration (WebConfigurationFileMap fileMap, string path)
 350                 {
 351                         return ConfigurationFactory.Create (typeof(WebConfigurationHost), fileMap, path);
 352                 }
 353
 354                 public static _Configuration OpenMappedWebConfiguration (WebConfigurationFileMap fileMap, string path, string site)
 355                 {
 356                         return ConfigurationFactory.Create (typeof(WebConfigurationHost), fileMap, path, site);
 357                 }
 358
 359                 public static _Configuration OpenMappedWebConfiguration (WebConfigurationFileMap fileMap, string path, string site, string locationSubPath)
 360                 {
 361                         return ConfigurationFactory.Create (typeof(WebConfigurationHost), fileMap, path, site, locationSubPath);
 362                 }
 363
 364                 public static _Configuration OpenMappedMachineConfiguration (ConfigurationFileMap fileMap)
 365                 {
 366                         return ConfigurationFactory.Create (typeof(WebConfigurationHost), fileMap);
 367                 }
 368
 369                 public static _Configuration OpenMappedMachineConfiguration (ConfigurationFileMap fileMap,
 370                                                                              string locationSubPath)
 371                 {
 372                         return OpenMappedMachineConfiguration (fileMap);
 373                 }
 374
 375                 internal static object SafeGetSection (string sectionName, Type configSectionType)
 376                 {
 377                         try {
 378                                 return GetSection (sectionName);
 379                         } catch (Exception) {
 380                                 if (configSectionType != null)
 381                                         return Activator.CreateInstance (configSectionType);
 382                                 return null;
 383                         }
 384                 }
 385
 386                 internal static object SafeGetSection (string sectionName, string path, Type configSectionType)
 387                 {
 388                         try {
 389                                 return GetSection (sectionName, path);
 390                         } catch (Exception) {
 391                                 if (configSectionType != null)
 392                                         return Activator.CreateInstance (configSectionType);
 393                                 return null;
 394                         }
 395                 }
 396
 397                 public static object GetSection (string sectionName)
 398                 {
 399                         HttpContext context = HttpContext.Current;
 400                         return GetSection (sectionName, GetCurrentPath (context), context);
 401                 }
 402
 403                 public static object GetSection (string sectionName, string path)
 404                 {
 405                         return GetSection (sectionName, path, HttpContext.Current);
 406                 }
 407
 408                 static bool LookUpLocation (string relativePath, ref _Configuration defaultConfiguration)
 409                 {
 410                         if (String.IsNullOrEmpty (relativePath))
 411                                 return false;
 412
 413                         _Configuration cnew = defaultConfiguration.FindLocationConfiguration (relativePath, defaultConfiguration);
 414                         if (cnew == defaultConfiguration)
 415                                 return false;
 416
 417                         defaultConfiguration = cnew;
 418                         return true;
 419                 }
 420
 421                 internal static object GetSection (string sectionName, string path, HttpContext context)
 422                 {
 423                         if (String.IsNullOrEmpty (sectionName))
 424                                 return null;
 425
 426                         _Configuration c = OpenWebConfiguration (path, null, null, null, null, null, false);
 427                         string configPath = c.ConfigPath;
 428                         int baseCacheKey = 0;
 429                         int cacheKey;
 430                         bool pathPresent = !String.IsNullOrEmpty (path);
 431                         string locationPath = null;
 432                         bool locked = false;
 433
 434                         if (pathPresent)
 435                                 locationPath = "location_" + path;
 436
 437                         baseCacheKey = sectionName.GetHashCode ();
 438                         if (configPath != null)
 439                                 baseCacheKey ^= configPath.GetHashCode ();
 440
 441                         try {
 442                                 sectionCacheLock.EnterReadLock ();
 443                                 locked = true;
 444
 445                                 object o;
 446                                 if (pathPresent) {
 447                                         cacheKey = baseCacheKey ^ locationPath.GetHashCode ();
 448                                         if (sectionCache.TryGetValue (cacheKey, out o))
 449                                                 return o;
 450
 451                                         cacheKey = baseCacheKey ^ path.GetHashCode ();
 452                                         if (sectionCache.TryGetValue (cacheKey, out o))
 453                                                 return o;
 454                                 }
 455
 456                                 if (sectionCache.TryGetValue (baseCacheKey, out o))
 457                                         return o;
 458                         } finally {
 459                                 if (locked)
 460                                         sectionCacheLock.ExitReadLock ();
 461                         }
 462
 463                         string cachePath = null;
 464                         if (pathPresent) {
 465                                 string relPath;
 466
 467                                 if (VirtualPathUtility.IsRooted (path)) {
 468                                         if (path [0] == '~')
 469                                                 relPath = path.Substring (2);
 470                                         else if (path [0] == '/')
 471                                                 relPath = path.Substring (1);
 472                                         else
 473                                                 relPath = path;
 474                                 } else
 475                                         relPath = path;
 476
 477                                 HttpRequest req = context != null ? context.Request : null;
 478                                 if (req != null) {
 479                                         string vdir = VirtualPathUtility.GetDirectory (req.PathNoValidation);
 480                                         if (vdir != null) {
 481                                                 vdir = vdir.TrimEnd (pathTrimChars);
 482                                                 if (String.Compare (c.ConfigPath, vdir, StringComparison.Ordinal) != 0 && LookUpLocation (vdir.Trim (pathTrimChars), ref c))
 483                                                         cachePath = path;
 484                                         }
 485                                 }
 486
 487                                 if (LookUpLocation (relPath, ref c))
 488                                         cachePath = locationPath;
 489                                 else
 490                                         cachePath = path;
 491                         }
 492
 493                         ConfigurationSection section = c.GetSection (sectionName);
 494                         if (section == null)
 495                                 return null;
 496
 497 #if TARGET_J2EE
 498                         object value = get_runtime_object.Invoke (section, new object [0]);
 499                         if (String.CompareOrdinal ("appSettings", sectionName) == 0) {
 500                                 NameValueCollection collection;
 501                                 collection = new KeyValueMergedCollection (HttpContext.Current, (NameValueCollection) value);
 502                                 value = collection;
 503                         }
 504 #else
 505 #if MONOWEB_DEP
 506                         object value = SettingsMappingManager.MapSection (get_runtime_object.Invoke (section, new object [0]));
 507 #else
 508                         object value = null;
 509 #endif
 510 #endif
 511                         if (cachePath != null)
 512                                 cacheKey = baseCacheKey ^ cachePath.GetHashCode ();
 513                         else
 514                                 cacheKey = baseCacheKey;
 515
 516                         AddSectionToCache (cacheKey, value);
 517                         return value;
 518                 }
 519
 520                 static string MapPath (HttpRequest req, string virtualPath)
 521                 {
 522                         if (req != null)
 523                                 return req.MapPath (virtualPath);
 524
 525                         string appRoot = HttpRuntime.AppDomainAppVirtualPath;
 526                         if (!String.IsNullOrEmpty (appRoot) && virtualPath.StartsWith (appRoot, StringComparison.Ordinal)) {
 527                                 if (String.Compare (virtualPath, appRoot, StringComparison.Ordinal) == 0)
 528                                         return HttpRuntime.AppDomainAppPath;
 529                                 return UrlUtils.Combine (HttpRuntime.AppDomainAppPath, virtualPath.Substring (appRoot.Length));
 530                         }
 531
 532                         return null;
 533                 }
 534
 535                 static string GetParentDir (string rootPath, string curPath)
 536                 {
 537                         int len = curPath.Length - 1;
 538                         if (len > 0 && curPath [len] == '/')
 539                                 curPath = curPath.Substring (0, len);
 540
 541                         if (String.Compare (curPath, rootPath, StringComparison.Ordinal) == 0)
 542                                 return null;
 543
 544                         int idx = curPath.LastIndexOf ('/');
 545                         if (idx == -1)
 546                                 return curPath;
 547
 548                         if (idx == 0)
 549                                 return "/";
 550
 551                         return curPath.Substring (0, idx);
 552                 }
 553
 554                 internal static string FindWebConfig (string path)
 555                 {
 556                         if (String.IsNullOrEmpty (path))
 557                                 return path;
 558
 559                         string dir;
 560                         if (path [path.Length - 1] == '/')
 561                                 dir = path;
 562                         else {
 563                                 dir = VirtualPathUtility.GetDirectory (path, false);
 564                                 if (dir == null)
 565                                         return path;
 566                         }
 567
 568                         string curPath = configPaths [dir] as string;
 569                         if (curPath != null)
 570                                 return curPath;
 571
 572                         HttpContext ctx = HttpContext.Current;
 573                         HttpRequest req = ctx != null ? ctx.Request : null;
 574                         if (req == null)
 575                                 return path;
 576
 577                         curPath = path;
 578                         string rootPath = HttpRuntime.AppDomainAppVirtualPath;
 579                         string physPath;
 580
 581                         while (String.Compare (curPath, rootPath, StringComparison.Ordinal) != 0) {
 582                                 physPath = MapPath (req, curPath);
 583                                 if (physPath == null) {
 584                                         curPath = rootPath;
 585                                         break;
 586                                 }
 587
 588                                 if (WebConfigurationHost.GetWebConfigFileName (physPath) != null)
 589                                         break;
 590
 591                                 curPath = GetParentDir (rootPath, curPath);
 592                                 if (curPath == null || curPath == "~") {
 593                                         curPath = rootPath;
 594                                         break;
 595                                 }
 596                         }
 597
 598                         configPaths [dir] = curPath;
 599                         return curPath;
 600                 }
 601
 602                 static string GetCurrentPath (HttpContext ctx)
 603                 {
 604                         HttpRequest req = ctx != null ? ctx.Request : null;
 605                         return req != null ? req.PathNoValidation : HttpRuntime.AppDomainAppVirtualPath;
 606                 }
 607
 608                 internal static bool SuppressAppReload (bool newValue)
 609                 {
 610                         bool ret;
 611
 612                         lock (suppressAppReloadLock) {
 613                                 ret = suppressAppReload;
 614                                 suppressAppReload = newValue;
 615                         }
 616
 617                         return ret;
 618                 }
 619
 620                 internal static void RemoveConfigurationFromCache (HttpContext ctx)
 621                 {
 622                         configurations.Remove (GetCurrentPath (ctx));
 623                 }
 624
 625 #if TARGET_J2EE || MONOWEB_DEP
 626                 readonly static MethodInfo get_runtime_object = typeof (ConfigurationSection).GetMethod ("GetRuntimeObject", BindingFlags.NonPublic | BindingFlags.Instance);
 627 #endif
 628
 629                 public static object GetWebApplicationSection (string sectionName)
 630                 {
 631                         HttpContext ctx = HttpContext.Current;
 632                         HttpRequest req = ctx != null ? ctx.Request : null;
 633                         string applicationPath = req != null ? req.ApplicationPath : null;
 634                         return GetSection (sectionName, String.IsNullOrEmpty (applicationPath) ? String.Empty : applicationPath);
 635                 }
 636
 637                 public static NameValueCollection AppSettings {
 638                         get { return ConfigurationManager.AppSettings; }
 639                 }
 640
 641                 public static ConnectionStringSettingsCollection ConnectionStrings {
 642                         get { return ConfigurationManager.ConnectionStrings; }
 643                 }
 644
 645                 internal static IInternalConfigConfigurationFactory ConfigurationFactory {
 646                         get { return configFactory; }
 647                 }
 648
 649                 static void AddSectionToCache (int key, object section)
 650                 {
 651                         object cachedSection;
 652                         bool locked = false;
 653
 654                         try {
 655                                 sectionCacheLock.EnterUpgradeableReadLock ();
 656                                 locked = true;
 657
 658                                 if (sectionCache.TryGetValue (key, out cachedSection) && cachedSection != null)
 659                                         return;
 660
 661                                 bool innerLocked = false;
 662                                 try {
 663                                         sectionCacheLock.EnterWriteLock ();
 664                                         innerLocked = true;
 665                                         sectionCache.Add (key, section);
 666                                 } finally {
 667                                         if (innerLocked)
 668                                                 sectionCacheLock.ExitWriteLock ();
 669                                 }
 670                         } finally {
 671                                 if (locked)
 672                                         sectionCacheLock.ExitUpgradeableReadLock ();
 673                         }
 674                 }
 675
 676 #region stuff copied from WebConfigurationSettings
 677 #if TARGET_J2EE
 678                 static internal IConfigurationSystem oldConfig {
 679                         get {
 680                                 return (IConfigurationSystem)AppDomain.CurrentDomain.GetData("WebConfigurationManager.oldConfig");
 681                         }
 682                         set {
 683                                 AppDomain.CurrentDomain.SetData("WebConfigurationManager.oldConfig", value);
 684                         }
 685                 }
 686
 687                 static Web20DefaultConfig config {
 688                         get {
 689                                 return (Web20DefaultConfig) AppDomain.CurrentDomain.GetData ("Web20DefaultConfig.config");
 690                         }
 691                         set {
 692                                 AppDomain.CurrentDomain.SetData ("Web20DefaultConfig.config", value);
 693                         }
 694                 }
 695
 696                 static IInternalConfigSystem configSystem {
 697                         get {
 698                                 return (IInternalConfigSystem) AppDomain.CurrentDomain.GetData ("IInternalConfigSystem.configSystem");
 699                         }
 700                         set {
 701                                 AppDomain.CurrentDomain.SetData ("IInternalConfigSystem.configSystem", value);
 702                         }
 703                 }
 704 #else
 705                 static internal IConfigurationSystem oldConfig;
 706                 static Web20DefaultConfig config;
 707                 //static IInternalConfigSystem configSystem;
 708 #endif
 709                 const BindingFlags privStatic = BindingFlags.NonPublic | BindingFlags.Static;
 710                 static readonly object lockobj = new object ();
 711
 712                 internal static void Init ()
 713                 {
 714                         lock (lockobj) {
 715                                 if (config != null)
 716                                         return;
 717
 718                                 /* deal with the ConfigurationSettings stuff */
 719                                 {
 720                                         Web20DefaultConfig settings = Web20DefaultConfig.GetInstance ();
 721                                         Type t = typeof (ConfigurationSettings);
 722                                         MethodInfo changeConfig = t.GetMethod ("ChangeConfigurationSystem",
 723                                                                                privStatic);
 724
 725                                         if (changeConfig == null)
 726                                                 throw new ConfigurationException ("Cannot find method CCS");
 727
 728                                         object [] args = new object [] {settings};
 729                                         oldConfig = (IConfigurationSystem)changeConfig.Invoke (null, args);
 730                                         config = settings;
 731
 732                                         config.Init ();
 733                                 }
 734
 735                                 /* deal with the ConfigurationManager stuff */
 736                                 {
 737                                         HttpConfigurationSystem system = new HttpConfigurationSystem ();
 738                                         Type t = typeof (ConfigurationManager);
 739                                         MethodInfo changeConfig = t.GetMethod ("ChangeConfigurationSystem",
 740                                                                                privStatic);
 741
 742                                         if (changeConfig == null)
 743                                                 throw new ConfigurationException ("Cannot find method CCS");
 744
 745                                         object [] args = new object [] {system};
 746                                         changeConfig.Invoke (null, args);
 747                                         //configSystem = system;
 748                                 }
 749                         }
 750                 }
 751         }
 752
 753         class Web20DefaultConfig : IConfigurationSystem
 754         {
 755 #if TARGET_J2EE
 756                 static Web20DefaultConfig instance {
 757                         get {
 758                                 Web20DefaultConfig val = (Web20DefaultConfig)AppDomain.CurrentDomain.GetData("Web20DefaultConfig.instance");
 759                                 if (val == null) {
 760                                         val = new Web20DefaultConfig();
 761                                         AppDomain.CurrentDomain.SetData("Web20DefaultConfig.instance", val);
 762                                 }
 763                                 return val;
 764                         }
 765                         set {
 766                                 AppDomain.CurrentDomain.SetData("Web20DefaultConfig.instance", value);
 767                         }
 768                 }
 769 #else
 770                 static Web20DefaultConfig instance;
 771 #endif
 772
 773                 static Web20DefaultConfig ()
 774                 {
 775                         instance = new Web20DefaultConfig ();
 776                 }
 777
 778                 public static Web20DefaultConfig GetInstance ()
 779                 {
 780                         return instance;
 781                 }
 782
 783                 public object GetConfig (string sectionName)
 784                 {
 785                         object o = WebConfigurationManager.GetWebApplicationSection (sectionName);
 786
 787                         if (o == null || o is IgnoreSection) {
 788                                 /* this can happen when the section
 789                                  * handler doesn't subclass from
 790                                  * ConfigurationSection.  let's be
 791                                  * nice and try to load it using the
 792                                  * 1.x style routines in case there's
 793                                  * a 1.x section handler registered
 794                                  * for it.
 795                                  */
 796                                 object o1 = WebConfigurationManager.oldConfig.GetConfig (sectionName);
 797                                 if (o1 != null)
 798                                         return o1;
 799                         }
 800
 801                         return o;
 802                 }
 803
 804                 public void Init ()
 805                 {
 806                         // nothing. We need a context.
 807                 }
 808         }
 809 #endregion
 810 }
 811
 812 #endif