mcs/class/System/System.Net/AuthenticationManager.cs

   1 //
   2 // System.Net.AuthenticationManager.cs
   3 //
   4 // Author:
   5 //      Miguel de Icaza (miguel@ximian.com)
   6 //      Gonzalo Paniagua Javier (gonzalo@ximian.com)
   7 //
   8 // (C) 2002,2003 Ximian, Inc. (http://www.ximian.com)
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System.Collections;
  33 using System.Collections.Specialized;
  34 using System.Configuration;
  35 using System.Net.Configuration;
  36
  37 namespace System.Net
  38 {
  39 #if MOONLIGHT
  40         internal class AuthenticationManager {
  41 #else
  42         public class AuthenticationManager {
  43 #endif
  44                 static ArrayList modules;
  45                 static object locker = new object ();
  46
  47                 private AuthenticationManager ()
  48                 {
  49                 }
  50
  51                 static void EnsureModules ()
  52                 {
  53                         lock (locker) {
  54                                 if (modules != null)
  55                                         return;
  56
  57                                 modules = new ArrayList ();
  58 #if NET_2_1
  59                                 modules.Add (new BasicClient ());
  60                                 modules.Add (new DigestClient ());
  61                                 modules.Add (new NtlmClient ());
  62 #elif NET_2_0 && CONFIGURATION_DEP
  63                                 object cfg = ConfigurationManager.GetSection ("system.net/authenticationModules");
  64                                 AuthenticationModulesSection s = cfg as AuthenticationModulesSection;
  65                                 if (s != null) {
  66                                         foreach (AuthenticationModuleElement element in s.AuthenticationModules) {
  67                                                 IAuthenticationModule module = null;
  68                                                 try {
  69                                                         Type type = Type.GetType (element.Type, true);
  70                                                         module = (IAuthenticationModule) Activator.CreateInstance (type);
  71                                                 } catch {}
  72                                                 modules.Add (module);
  73                                         }
  74                                 }
  75 #else
  76                                 ConfigurationSettings.GetConfig ("system.net/authenticationModules");
  77 #endif
  78                         }
  79                 }
  80
  81                 static ICredentialPolicy credential_policy = null;
  82
  83                 public static ICredentialPolicy CredentialPolicy
  84                 {
  85                         get {
  86                                 return(credential_policy);
  87                                                         }
  88                         set {
  89                                 credential_policy = value;
  90                         }
  91                 }
  92
  93                 static Exception GetMustImplement ()
  94                 {
  95                         return new NotImplementedException ();
  96                 }
  97
  98                 [MonoTODO]
  99                 public static StringDictionary CustomTargetNameDictionary
 100                 {
 101                         get {
 102                                 throw GetMustImplement ();
 103                         }
 104                 }
 105
 106                 public static IEnumerator RegisteredModules {
 107                         get {
 108                                 EnsureModules ();
 109                                 return modules.GetEnumerator ();
 110                         }
 111                 }
 112
 113                 internal static void Clear ()
 114                 {
 115                         EnsureModules ();
 116                         lock (modules)
 117                                 modules.Clear ();
 118                 }
 119
 120                 public static Authorization Authenticate (string challenge, WebRequest request, ICredentials credentials)
 121                 {
 122                         if (request == null)
 123                                 throw new ArgumentNullException ("request");
 124
 125                         if (credentials == null)
 126                                 throw new ArgumentNullException ("credentials");
 127
 128                         if (challenge == null)
 129                                 throw new ArgumentNullException ("challenge");
 130
 131                         return DoAuthenticate (challenge, request, credentials);
 132                 }
 133
 134                 static Authorization DoAuthenticate (string challenge, WebRequest request, ICredentials credentials)
 135                 {
 136                         EnsureModules ();
 137                         lock (modules) {
 138                                 foreach (IAuthenticationModule mod in modules) {
 139                                         Authorization auth = mod.Authenticate (challenge, request, credentials);
 140                                         if (auth == null)
 141                                                 continue;
 142
 143                                         auth.Module = mod;
 144                                         return auth;
 145                                 }
 146                         }
 147
 148                         return null;
 149                 }
 150
 151                 public static Authorization PreAuthenticate (WebRequest request, ICredentials credentials)
 152                 {
 153                         if (request == null)
 154                                 throw new ArgumentNullException ("request");
 155
 156                         if (credentials == null)
 157                                 return null;
 158
 159                         EnsureModules ();
 160                         lock (modules) {
 161                                 foreach (IAuthenticationModule mod in modules) {
 162                                         Authorization auth = mod.PreAuthenticate (request, credentials);
 163                                         if (auth == null)
 164                                                 continue;
 165
 166                                         auth.Module = mod;
 167                                         return auth;
 168                                 }
 169                         }
 170
 171                         return null;
 172                 }
 173
 174                 public static void Register (IAuthenticationModule authenticationModule)
 175                 {
 176                         if (authenticationModule == null)
 177                                 throw new ArgumentNullException ("authenticationModule");
 178
 179                         DoUnregister (authenticationModule.AuthenticationType, false);
 180                         lock (modules)
 181                                 modules.Add (authenticationModule);
 182                 }
 183
 184                 public static void Unregister (IAuthenticationModule authenticationModule)
 185                 {
 186                         if (authenticationModule == null)
 187                                 throw new ArgumentNullException ("authenticationModule");
 188
 189                         DoUnregister (authenticationModule.AuthenticationType, true);
 190                 }
 191
 192                 public static void Unregister (string authenticationScheme)
 193                 {
 194                         if (authenticationScheme == null)
 195                                 throw new ArgumentNullException ("authenticationScheme");
 196
 197                         DoUnregister (authenticationScheme, true);
 198                 }
 199
 200                 static void DoUnregister (string authenticationScheme, bool throwEx)
 201                 {
 202                         EnsureModules ();
 203                         lock (modules) {
 204                                 IAuthenticationModule module = null;
 205                                 foreach (IAuthenticationModule mod in modules) {
 206                                         string modtype = mod.AuthenticationType;
 207                                         if (String.Compare (modtype, authenticationScheme, true) == 0) {
 208                                                 module = mod;
 209                                                 break;
 210                                         }
 211                                 }
 212
 213                                 if (module == null) {
 214                                         if (throwEx)
 215                                                 throw new InvalidOperationException ("Scheme not registered.");
 216                                 } else {
 217                                         modules.Remove (module);
 218                                 }
 219                         }
 220                 }
 221         }
 222 }
 223