WebConfigurationHost.cs :  » 2.6.4-mono-.net-core » System.Web » System » Web » Configuration » C# / CSharp Open Source

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C# / CSharp Open Source » 2.6.4 mono .net core » System.Web 
System.Web » System » Web » Configuration » WebConfigurationHost.cs
//
// System.Web.Configuration.WebConfigurationHost.cs
//
// Authors:
//  Lluis Sanchez Gual (lluis@novell.com)
//  Marek Habersack <mhabersack@novell.com>
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
// 
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
// Copyright (C) 2005-2009 Novell, Inc (http://www.novell.com)
//

#if NET_2_0

using System;
using System.Collections;
using System.IO;
using System.Security;
using System.Configuration;
using System.Configuration.Internal;
using System.Web.Hosting;
using System.Web.Util;
using System.Reflection;

/*
 * this class needs to be rewritten to support usage of the
 * IRemoteWebConfigurationHostServer interface.  Once that's done, we
 * need an implementation of that interface that talks (through a web
 * service?) to a remote site..
 *
 * for now, though, just implement it as we do
 * System.Configuration.InternalConfigurationHost, i.e. the local
 * case.
 */
namespace System.Web.Configuration{
  class WebConfigurationHost: IInternalConfigHost
  {
    WebConfigurationFileMap map;
    const string MachinePath = ":machine:";
    const string MachineWebPath = ":web:";
    
    public virtual object CreateConfigurationContext (string configPath, string locationSubPath)
    {
      return new WebContext (WebApplicationLevel.AtApplication /* XXX */,
                 "" /* site XXX */,
                 "" /* application path XXX */,
                 configPath,
                 locationSubPath);
    }
    
    public virtual object CreateDeprecatedConfigContext (string configPath)
    {
      return new HttpConfigurationContext(configPath);
    }
    
    public virtual string DecryptSection (string encryptedXml, ProtectedConfigurationProvider protectionProvider, ProtectedConfigurationSection protectedSection)
    {
      if (protectedSection == null)
        throw new ArgumentNullException ("protectedSection");

      return protectedSection.EncryptSection (encryptedXml, protectionProvider);
    }
    
    public virtual void DeleteStream (string streamName)
    {
      File.Delete (streamName);
    }
    
    public virtual string EncryptSection (string clearXml, ProtectedConfigurationProvider protectionProvider, ProtectedConfigurationSection protectedSection)
    {
      if (protectedSection == null)
        throw new ArgumentNullException ("protectedSection");

      return protectedSection.EncryptSection (clearXml, protectionProvider);
    }
    
    public virtual string GetConfigPathFromLocationSubPath (string configPath, string locationSubPath)
    {
      if (!String.IsNullOrEmpty (locationSubPath) && !String.IsNullOrEmpty (configPath)) {
        string relConfigPath = configPath.Length == 1 ? null : configPath.Substring (1) + "/";
        if (relConfigPath != null && locationSubPath.StartsWith (relConfigPath, StringComparison.Ordinal))
          locationSubPath = locationSubPath.Substring (relConfigPath.Length);
      }
      
      string ret = configPath + "/" + locationSubPath;
      if (!String.IsNullOrEmpty (ret) && ret [0] == '/')
        return ret.Substring (1);
      
      return ret;
    }
    
    public virtual Type GetConfigType (string typeName, bool throwOnError)
    {
            Type type = HttpApplication.LoadType (typeName);
      if (type == null && throwOnError)
        throw new ConfigurationErrorsException ("Type not found: '" + typeName + "'");
      return type;
    }
    
    public virtual string GetConfigTypeName (Type t)
    {
      return t.AssemblyQualifiedName;
    }
    
    public virtual void GetRestrictedPermissions (IInternalConfigRecord configRecord, out PermissionSet permissionSet,
                    out bool isHostReady)
    {
      throw new NotImplementedException ();
    }
    
    public virtual string GetStreamName (string configPath)
    {
      if (configPath == MachinePath) {
        if (map == null)
          return System.Runtime.InteropServices.RuntimeEnvironment.SystemConfigurationFile;
        else
          return map.MachineConfigFilename;
      } else if (configPath == MachineWebPath) {
        string mdir;

        if (map == null)
#if TARGET_J2EE
        {
          // check META-INF/web.config exists
          java.lang.ClassLoader cl = (java.lang.ClassLoader) AppDomain.CurrentDomain.GetData ("GH_ContextClassLoader");
          if (cl == null)
            return null;
          java.io.InputStream wcs = cl.getResourceAsStream ("META-INF/web.config");
          if (wcs == null)
            return null;

          wcs.close ();

          return "/META-INF/web.config";
        }
#else
          mdir = Path.GetDirectoryName (System.Runtime.InteropServices.RuntimeEnvironment.SystemConfigurationFile);
#endif
        else
          mdir = Path.GetDirectoryName (map.MachineConfigFilename);

        return GetWebConfigFileName (mdir);
      }
      
      string dir = MapPath (configPath);
      return GetWebConfigFileName (dir);
    }
    
    public virtual string GetStreamNameForConfigSource (string streamName, string configSource)
    {
      throw new NotImplementedException ();
    }
    
    public virtual object GetStreamVersion (string streamName)
    {
      throw new NotImplementedException ();
    }
    
    public virtual IDisposable Impersonate ()
    {
      throw new NotImplementedException ();
    }
    
    public virtual void Init (IInternalConfigRoot root, params object[] hostInitParams)
    {
    }
    
    public virtual void InitForConfiguration (ref string locationSubPath, out string configPath,
                out string locationConfigPath, IInternalConfigRoot root,
                params object[] hostInitConfigurationParams)
    {
      string fullPath = (string) hostInitConfigurationParams [1];
      map = (WebConfigurationFileMap) hostInitConfigurationParams [0];

      if (locationSubPath == MachineWebPath) {
        locationSubPath = MachinePath;
        configPath = MachineWebPath;
        locationConfigPath = null;
      } else if (locationSubPath == MachinePath) {
        locationSubPath = null;
        configPath = MachinePath;
        locationConfigPath = null;
      } else {
        int i;
        if (locationSubPath == null) {
          configPath = fullPath;
          if (configPath.Length > 1)
            configPath = VirtualPathUtility.RemoveTrailingSlash (configPath);
        } else
          configPath = locationSubPath;
        
        if (configPath == HttpRuntime.AppDomainAppVirtualPath || configPath == "/")
          i = -1;
        else
          i = configPath.LastIndexOf ("/");

        if (i != -1) {
          locationConfigPath = configPath.Substring (i+1);
          
          if (i == 0)
            locationSubPath = "/";
          else
            locationSubPath = fullPath.Substring (0, i);
        } else {
          locationSubPath = MachineWebPath;
          locationConfigPath = null;
        }
      }
    }
    
    public string MapPath (string virtualPath)
    {
      if (!String.IsNullOrEmpty (virtualPath)) {
        if (virtualPath.StartsWith (System.Web.Compilation.BuildManager.FAKE_VIRTUAL_PATH_PREFIX, StringComparison.Ordinal))
          return HttpRuntime.AppDomainAppPath;
      }
      
      if (map != null)
        return MapPathFromMapper (virtualPath);
      else if (HttpContext.Current != null && HttpContext.Current.Request != null)
        return HttpContext.Current.Request.MapPath (virtualPath);
      else if (HttpRuntime.AppDomainAppVirtualPath != null &&
         virtualPath.StartsWith (HttpRuntime.AppDomainAppVirtualPath)) {
        if (virtualPath == HttpRuntime.AppDomainAppVirtualPath)
          return HttpRuntime.AppDomainAppPath;
        return UrlUtils.Combine (HttpRuntime.AppDomainAppPath,
               virtualPath.Substring (HttpRuntime.AppDomainAppVirtualPath.Length));
      }
      
      return virtualPath;
    }
    
    public string NormalizeVirtualPath (string virtualPath)
    {
      if (virtualPath == null || virtualPath.Length == 0)
        virtualPath = ".";
      else
        virtualPath = virtualPath.Trim ();

      if (virtualPath [0] == '~' && virtualPath.Length > 2 && virtualPath [1] == '/')
        virtualPath = virtualPath.Substring (1);
        
      if (System.IO.Path.DirectorySeparatorChar != '/')
        virtualPath = virtualPath.Replace (System.IO.Path.DirectorySeparatorChar, '/');

      if (UrlUtils.IsRooted (virtualPath)) {
        virtualPath = UrlUtils.Canonic (virtualPath);
      } else {
        if (map.VirtualDirectories.Count > 0) {
          string root = map.VirtualDirectories [0].VirtualDirectory;
          virtualPath = UrlUtils.Combine (root, virtualPath);
          virtualPath = UrlUtils.Canonic (virtualPath);
        }
      }
      return virtualPath;
    }

    public string MapPathFromMapper (string virtualPath)
    {
      string path = NormalizeVirtualPath (virtualPath);
      
      foreach (VirtualDirectoryMapping mapping in map.VirtualDirectories) {
        if (path.StartsWith (mapping.VirtualDirectory)) {
          int i = mapping.VirtualDirectory.Length;
          if (path.Length == i) {
            return mapping.PhysicalDirectory;
          }
          else if (path [i] == '/') {
            string pathPart = path.Substring (i + 1).Replace ('/', Path.DirectorySeparatorChar);
            return Path.Combine (mapping.PhysicalDirectory, pathPart);
          }
        }
      }
      throw new HttpException ("Invalid virtual directory: " + virtualPath);
    }

    internal static string GetWebConfigFileName (string dir)
    {
#if TARGET_J2EE
      DirectoryInfo d = GetCaseSensitiveExistingDirectory (new DirectoryInfo (dir));
      if (d == null)
        return null;

      FileInfo file = (FileInfo) FindByName ("web.config", d.GetFiles ("W*"));
      if (file == null)
        file = (FileInfo) FindByName ("web.config", d.GetFiles ("w*"));

      if (file != null)
        return file.FullName;
#else
      AppDomain domain = AppDomain.CurrentDomain;
      bool hosted = (domain.GetData (ApplicationHost.MonoHostedDataKey) as string) == "yes";

      if (hosted) {
        foreach (string fn in ApplicationHost.WebConfigFileNames) {
          string file = Path.Combine (dir, fn);
          if (File.Exists (file))
            return file;
        }
      } else {
        Assembly asm = Assembly.GetEntryAssembly () ?? Assembly.GetCallingAssembly ();
        string name = Path.GetFileName (asm.Location);
        string[] fileNames = new string[] {name + ".config", name + ".Config"};
        string appDir = domain.BaseDirectory;
        string file;

        foreach (string fn in fileNames) {
          file = Path.Combine (appDir, fn);
          if (File.Exists (file))
            return file;
        }
      }
#endif      
      return null;
    }
#if TARGET_J2EE
    static DirectoryInfo GetCaseSensitiveExistingDirectory (DirectoryInfo dir) {
      if (dir == null)
        return null;
      if (dir.Exists)
        return dir;

      DirectoryInfo parent = GetCaseSensitiveExistingDirectory (dir.Parent);
      if (parent == null)
        return null;

      return (DirectoryInfo) FindByName (dir.Name, parent.GetDirectories ());
    }
    
    static FileSystemInfo FindByName (string name, FileSystemInfo [] infos)
    {
      for (int i = 0; i < infos.Length; i++) {
        if (String.Compare (name, infos [i].Name, StringComparison.OrdinalIgnoreCase) == 0)
          return infos [i];
      }
      return null;
    }
#endif
    public virtual bool IsAboveApplication (string configPath)
    {
      throw new NotImplementedException ();
    }
    
    public virtual bool IsConfigRecordRequired (string configPath)
    {
      throw new NotImplementedException ();
    }
    
    public virtual bool IsDefinitionAllowed (string configPath, ConfigurationAllowDefinition allowDefinition,
               ConfigurationAllowExeDefinition allowExeDefinition)
    {
      switch (allowDefinition) {
        case ConfigurationAllowDefinition.MachineOnly:
          return configPath == MachinePath || configPath == MachineWebPath;
        case ConfigurationAllowDefinition.MachineToWebRoot:
        case ConfigurationAllowDefinition.MachineToApplication:
          if (String.IsNullOrEmpty (configPath))
            return true;
          string normalized;

          if (VirtualPathUtility.IsRooted (configPath))
            normalized = VirtualPathUtility.Normalize (configPath);
          else
            normalized = configPath;
          
          return (String.Compare (normalized, MachinePath, StringComparison.Ordinal) == 0) ||
            (String.Compare (normalized, MachineWebPath, StringComparison.Ordinal) == 0) ||
            (String.Compare (normalized, "/", StringComparison.Ordinal) == 0) ||
            (String.Compare (normalized, "~", StringComparison.Ordinal) == 0) ||
            (String.Compare (normalized, HttpRuntime.AppDomainAppVirtualPath) == 0);
        default:
          return true;
      }
    }
    
    public virtual bool IsFile (string streamName)
    {
      throw new NotImplementedException ();
    }
    
    public virtual bool IsLocationApplicable (string configPath)
    {
      throw new NotImplementedException ();
    }
    
    public virtual Stream OpenStreamForRead (string streamName)
    {
      if (!File.Exists (streamName)) {
#if TARGET_J2EE
        if (streamName != null && (streamName.EndsWith ("machine.config") ||
                 streamName.EndsWith ("web.config"))) {
          if (streamName.StartsWith ("/"))
            streamName = streamName.Substring (1);
          java.lang.ClassLoader cl = (java.lang.ClassLoader) AppDomain.CurrentDomain.GetData ("GH_ContextClassLoader");
          if (cl != null) {
            java.io.InputStream inputStream = cl.getResourceAsStream (streamName);
            return new System.Web.J2EE.J2EEUtils.InputStreamWrapper (inputStream);
          }
        }
#endif
        throw new ConfigurationException ("File '" + streamName + "' not found");
      }
        
      return new FileStream (streamName, FileMode.Open, FileAccess.Read);
    }

    [MonoTODO ("Not implemented")]
    public virtual Stream OpenStreamForRead (string streamName, bool assertPermissions)
    {
      throw new NotImplementedException ();
    }

    public virtual Stream OpenStreamForWrite (string streamName, string templateStreamName, ref object writeContext)
    {
      string rootConfigPath = GetWebConfigFileName (HttpRuntime.AppDomainAppPath);
      if (String.Compare (streamName, rootConfigPath, StringComparison.OrdinalIgnoreCase) == 0)
        WebConfigurationManager.SuppressAppReload (true);
      return new FileStream (streamName, FileMode.Create, FileAccess.Write);
    }

    [MonoTODO ("Not implemented")]
    public virtual Stream OpenStreamForWrite (string streamName, string templateStreamName, ref object writeContext,
                bool assertPermissions)
    {
      throw new NotImplementedException ();
    }
    
    public virtual bool PrefetchAll (string configPath, string streamName)
    {
      throw new NotImplementedException ();
    }
    
    public virtual bool PrefetchSection (string sectionGroupName, string sectionName)
    {
      throw new NotImplementedException ();
    }

    [MonoTODO ("Not implemented")]
    public virtual void RequireCompleteInit (IInternalConfigRecord configRecord)
    {
      throw new NotImplementedException ();
    }

    public virtual object StartMonitoringStreamForChanges (string streamName, StreamChangeCallback callback)
    {      
      throw new NotImplementedException ();
    }
    
    public virtual void StopMonitoringStreamForChanges (string streamName, StreamChangeCallback callback)
    {
      throw new NotImplementedException ();
    }
    
    public virtual void VerifyDefinitionAllowed (string configPath, ConfigurationAllowDefinition allowDefinition,
                   ConfigurationAllowExeDefinition allowExeDefinition,
                   IConfigErrorInfo errorInfo)
    {
      if (!IsDefinitionAllowed (configPath, allowDefinition, allowExeDefinition))
        throw new ConfigurationErrorsException ("The section can't be defined in this file (the allowed definition context is '" + allowDefinition + "').", errorInfo.Filename, errorInfo.LineNumber);
    }
    
    public virtual void WriteCompleted (string streamName, bool success, object writeContext)
    {
      WriteCompleted (streamName, success, writeContext, false);
    }    

    public virtual void WriteCompleted (string streamName, bool success, object writeContext, bool assertPermissions)
    {
      // There are probably other things to be done here, but for the moment we
      // just mark the completed write as one that should not cause application
      // reload. Note that it might already be too late for suppression, since the
      // FileSystemWatcher monitor might have already delivered the
      // notification. If the stream has been open using OpenStreamForWrite then
      // we're safe, though.
      string rootConfigPath = GetWebConfigFileName (HttpRuntime.AppDomainAppPath);
      if (String.Compare (streamName, rootConfigPath, StringComparison.OrdinalIgnoreCase) == 0)
        WebConfigurationManager.SuppressAppReload (true);
    }

    public virtual bool SupportsChangeNotifications {
      get { return false; }
    }
    
    public virtual bool SupportsLocation {
      get { return false; }
    }
    
    public virtual bool SupportsPath {
      get { return false; }
    }
    
    public virtual bool SupportsRefresh {
      get { return false; }
    }

    [MonoTODO("Always returns false")]
    public virtual bool IsRemote {
      get { return false; }
    }

    [MonoTODO ("Not implemented")]
    public virtual bool IsFullTrustSectionWithoutAptcaAllowed (IInternalConfigRecord configRecord)
    {
      throw new NotImplementedException ();
    }

    [MonoTODO ("Not implemented")]
    public virtual bool IsInitDelayed (IInternalConfigRecord configRecord)
    {
      throw new NotImplementedException ();
    }

    [MonoTODO ("Not implemented")]
    public virtual bool IsSecondaryRoot (string configPath)
    {
      throw new NotImplementedException ();
    }

    [MonoTODO ("Not implemented")]
    public virtual bool IsTrustedConfigPath (string configPath)
    {
      throw new NotImplementedException ();
    }
  }
}

#endif
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