mcs/class/System.Configuration/System.Configuration/ConfigurationManager.cs

   1 //
   2 // System.Configuration.ConfigurationManager.cs
   3 //
   4 // Authors:
   5 //      Duncan Mak (duncan@ximian.com)
   6 //      Lluis Sanchez Gual (lluis@novell.com)
   7 //
   8 // Permission is hereby granted, free of charge, to any person obtaining
   9 // a copy of this software and associated documentation files (the
  10 // "Software"), to deal in the Software without restriction, including
  11 // without limitation the rights to use, copy, modify, merge, publish,
  12 // distribute, sublicense, and/or sell copies of the Software, and to
  13 // permit persons to whom the Software is furnished to do so, subject to
  14 // the following conditions:
  15 //
  16 // The above copyright notice and this permission notice shall be
  17 // included in all copies or substantial portions of the Software.
  18 //
  19 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  20 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  21 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  22 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  23 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  24 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  25 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  26 //
  27 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  28 //
  29
  30 using System;
  31 using System.Collections;
  32 using System.Runtime.CompilerServices;
  33 using System.Collections.Specialized;
  34 using System.Reflection;
  35 using System.Xml;
  36 using System.IO;
  37 using System.Text;
  38 using System.Configuration.Internal;
  39
  40 namespace System.Configuration {
  41
  42         /*roaming user config path: C:\Documents and Settings\toshok\Application Data\domain-System.Configurati_Url_py3nlovv3wxe21qgacxc3n2b1mph2log\1.0.0.0\user.config */
  43
  44         public static class ConfigurationManager
  45         {
  46 //              static bool systemWebInUse;
  47                 static InternalConfigurationFactory configFactory = new InternalConfigurationFactory ();
  48                 static IInternalConfigSystem configSystem = new ClientConfigurationSystem ();
  49                 static object lockobj = new object ();
  50
  51                 [MonoTODO ("Evidence and version still needs work")]
  52                 static string GetAssemblyInfo (Assembly a)
  53                 {
  54                         object[] attrs;
  55                         StringBuilder sb;
  56
  57                         string app_name;
  58                         string evidence_str;
  59                         string version;
  60
  61                         attrs = a.GetCustomAttributes (typeof (AssemblyProductAttribute), false);
  62                         if (attrs != null && attrs.Length > 0)
  63                                 app_name = ((AssemblyProductAttribute)attrs[0]).Product;
  64                         else
  65                                 app_name = AppDomain.CurrentDomain.FriendlyName;
  66
  67                         sb = new StringBuilder();
  68
  69                         sb.Append ("evidencehere");
  70
  71                         evidence_str = sb.ToString();
  72
  73                         attrs = a.GetCustomAttributes (typeof (AssemblyVersionAttribute), false);
  74                         if (attrs != null && attrs.Length > 0)
  75                                 version = ((AssemblyVersionAttribute)attrs[0]).Version;
  76                         else
  77                                 version = "1.0.0.0" /* XXX */;
  78
  79
  80                         return Path.Combine (String.Format ("{0}_{1}", app_name, evidence_str), version);
  81                 }
  82
  83                 internal static Configuration OpenExeConfigurationInternal (ConfigurationUserLevel userLevel, Assembly calling_assembly, string exePath)
  84                 {
  85                         ExeConfigurationFileMap map = new ExeConfigurationFileMap ();
  86
  87                         /* Roaming and RoamingAndLocal should be different
  88
  89                         On windows,
  90                           PerUserRoaming = \Documents and Settings\<username>\Application Data\...
  91                           PerUserRoamingAndLocal = \Documents and Settings\<username>\Local Settings\Application Data\...
  92                         */
  93
  94                         switch (userLevel) {
  95                         case ConfigurationUserLevel.None:
  96                                 if (exePath == null || exePath.Length == 0) {
  97                                         map.ExeConfigFilename = AppDomain.CurrentDomain.SetupInformation.ConfigurationFile;
  98                                 } else {
  99                                         if (!Path.IsPathRooted (exePath))
 100                                                 exePath = Path.GetFullPath (exePath);
 101                                         if (!File.Exists (exePath)) {
 102                                                 Exception cause = new ArgumentException ("The specified path does not exist.", "exePath");
 103                                                 throw new ConfigurationErrorsException ("Error Initializing the configuration system:", cause);
 104                                         }
 105                                         map.ExeConfigFilename = exePath + ".config";
 106                                 }
 107                                 break;
 108                         case ConfigurationUserLevel.PerUserRoaming:
 109                                 map.RoamingUserConfigFilename = Path.Combine (Environment.GetFolderPath (Environment.SpecialFolder.ApplicationData), GetAssemblyInfo(calling_assembly));
 110                                 map.RoamingUserConfigFilename = Path.Combine (map.RoamingUserConfigFilename, "user.config");
 111                                 goto case ConfigurationUserLevel.None;
 112
 113                         case ConfigurationUserLevel.PerUserRoamingAndLocal:
 114                                 map.LocalUserConfigFilename = Path.Combine (Environment.GetFolderPath (Environment.SpecialFolder.LocalApplicationData), GetAssemblyInfo(calling_assembly));
 115                                 map.LocalUserConfigFilename = Path.Combine (map.LocalUserConfigFilename, "user.config");
 116                                 goto case ConfigurationUserLevel.PerUserRoaming;
 117                         }
 118
 119                         return ConfigurationFactory.Create (typeof(ExeConfigurationHost), map, userLevel);
 120                 }
 121
 122 #if TARGET_JVM
 123                 [MonoLimitation ("Supported only when the userLevel parameter is set to ConfigurationUserLevel.None. Other values are not supported because Environment.GetFolderPath method is not implemented.")]
 124 #endif
 125                 public static Configuration OpenExeConfiguration (ConfigurationUserLevel userLevel)
 126                 {
 127                         return OpenExeConfigurationInternal (userLevel, Assembly.GetEntryAssembly () ?? Assembly.GetCallingAssembly (), null);
 128                 }
 129
 130                 public static Configuration OpenExeConfiguration (string exePath)
 131                 {
 132                         return OpenExeConfigurationInternal (ConfigurationUserLevel.None, Assembly.GetEntryAssembly () ?? Assembly.GetCallingAssembly (), exePath);
 133                 }
 134
 135                 [MonoLimitation("ConfigurationUserLevel parameter is not supported.")]
 136                 public static Configuration OpenMappedExeConfiguration (ExeConfigurationFileMap fileMap, ConfigurationUserLevel userLevel)
 137                 {
 138                         return ConfigurationFactory.Create (typeof(ExeConfigurationHost), fileMap, userLevel);
 139                 }
 140
 141                 public static Configuration OpenMachineConfiguration ()
 142                 {
 143                         ConfigurationFileMap map = new ConfigurationFileMap ();
 144                         return ConfigurationFactory.Create (typeof(MachineConfigurationHost), map);
 145                 }
 146
 147                 public static Configuration OpenMappedMachineConfiguration (ConfigurationFileMap fileMap)
 148                 {
 149                         return ConfigurationFactory.Create (typeof(MachineConfigurationHost), fileMap);
 150                 }
 151
 152                 internal static IInternalConfigConfigurationFactory ConfigurationFactory {
 153                         get { return configFactory; }
 154                 }
 155
 156                 internal static IInternalConfigSystem ConfigurationSystem {
 157                         get { return configSystem; }
 158                 }
 159
 160                 public static object GetSection (string sectionName)
 161                 {
 162                         object o = ConfigurationSystem.GetSection (sectionName);
 163                         if (o is ConfigurationSection)
 164                                 return ((ConfigurationSection) o).GetRuntimeObject ();
 165                         else
 166                                 return o;
 167                 }
 168
 169                 public static void RefreshSection (string sectionName)
 170                 {
 171                         ConfigurationSystem.RefreshConfig (sectionName);
 172                 }
 173
 174                 public static NameValueCollection AppSettings {
 175                         get {
 176                                 return (NameValueCollection) GetSection ("appSettings");
 177                         }
 178                 }
 179
 180                 public static ConnectionStringSettingsCollection ConnectionStrings {
 181                         get {
 182                                 ConnectionStringsSection connectionStrings = (ConnectionStringsSection) GetSection ("connectionStrings");
 183                                 return connectionStrings.ConnectionStrings;
 184                         }
 185                 }
 186
 187                 /* invoked from System.Web */
 188                 internal static IInternalConfigSystem ChangeConfigurationSystem (IInternalConfigSystem newSystem)
 189                 {
 190                         if (newSystem == null)
 191                                 throw new ArgumentNullException ("newSystem");
 192
 193                         lock (lockobj) {
 194                                 // KLUDGE!! We need that when an assembly loaded inside an ASP.NET
 195                                 // domain does OpenExeConfiguration ("") - we must return the path
 196                                 // to web.config in that instance.
 197                                 /*
 198                                 string t = newSystem.GetType ().ToString ();
 199                                 if (String.Compare (t, "System.Web.Configuration.HttpConfigurationSystem", StringComparison.OrdinalIgnoreCase) == 0)
 200                                         systemWebInUse = true;
 201                                 else
 202                                         systemWebInUse = false;
 203                                 */
 204                                 IInternalConfigSystem old = configSystem;
 205                                 configSystem = newSystem;
 206                                 return old;
 207                         }
 208                 }
 209         }
 210 }