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         public class AuthenticationManager {
  40                 static ArrayList modules;
  41                 static object locker = new object ();
  42
  43                 private AuthenticationManager ()
  44                 {
  45                 }
  46
  47                 static void EnsureModules ()
  48                 {
  49                         lock (locker) {
  50                                 if (modules != null)
  51                                         return;
  52
  53                                 modules = new ArrayList ();
  54 #if MOBILE
  55                                 modules.Add (new NtlmClient ());
  56                                 modules.Add (new DigestClient ());
  57                                 modules.Add (new BasicClient ());
  58 #elif CONFIGURATION_DEP
  59                                 object cfg = ConfigurationManager.GetSection ("system.net/authenticationModules");
  60                                 AuthenticationModulesSection s = cfg as AuthenticationModulesSection;
  61                                 if (s != null) {
  62                                         foreach (AuthenticationModuleElement element in s.AuthenticationModules) {
  63                                                 IAuthenticationModule module = null;
  64                                                 try {
  65                                                         Type type = Type.GetType (element.Type, true);
  66                                                         module = (IAuthenticationModule) Activator.CreateInstance (type);
  67                                                 } catch {}
  68                                                 modules.Add (module);
  69                                         }
  70                                 }
  71 #else
  72 #pragma warning disable 618
  73                                 ConfigurationSettings.GetConfig ("system.net/authenticationModules");
  74 #pragma warning restore 618
  75 #endif
  76                         }
  77                 }
  78
  79                 static ICredentialPolicy credential_policy = null;
  80
  81                 public static ICredentialPolicy CredentialPolicy
  82                 {
  83                         get {
  84                                 return(credential_policy);
  85                                                         }
  86                         set {
  87                                 credential_policy = value;
  88                         }
  89                 }
  90
  91                 static Exception GetMustImplement ()
  92                 {
  93                         return new NotImplementedException ();
  94                 }
  95
  96                 [MonoTODO]
  97                 public static StringDictionary CustomTargetNameDictionary
  98                 {
  99                         get {
 100                                 throw GetMustImplement ();
 101                         }
 102                 }
 103
 104                 public static IEnumerator RegisteredModules {
 105                         get {
 106                                 EnsureModules ();
 107                                 return modules.GetEnumerator ();
 108                         }
 109                 }
 110
 111                 [MonoTODO]
 112                 internal static bool OSSupportsExtendedProtection {
 113                         get {
 114                                 return false;
 115                         }
 116                 }
 117
 118                 internal static void Clear ()
 119                 {
 120                         EnsureModules ();
 121                         lock (modules)
 122                                 modules.Clear ();
 123                 }
 124
 125                 public static Authorization Authenticate (string challenge, WebRequest request, ICredentials credentials)
 126                 {
 127                         if (request == null)
 128                                 throw new ArgumentNullException ("request");
 129
 130                         if (credentials == null)
 131                                 throw new ArgumentNullException ("credentials");
 132
 133                         if (challenge == null)
 134                                 throw new ArgumentNullException ("challenge");
 135
 136                         return DoAuthenticate (challenge, request, credentials);
 137                 }
 138
 139                 static Authorization DoAuthenticate (string challenge, WebRequest request, ICredentials credentials)
 140                 {
 141                         EnsureModules ();
 142                         lock (modules) {
 143                                 foreach (IAuthenticationModule mod in modules) {
 144                                         Authorization auth = mod.Authenticate (challenge, request, credentials);
 145                                         if (auth == null)
 146                                                 continue;
 147
 148                                         auth.ModuleAuthenticationType = mod.AuthenticationType;
 149                                         return auth;
 150                                 }
 151                         }
 152
 153                         return null;
 154                 }
 155
 156                 public static Authorization PreAuthenticate (WebRequest request, ICredentials credentials)
 157                 {
 158                         if (request == null)
 159                                 throw new ArgumentNullException ("request");
 160
 161                         if (credentials == null)
 162                                 return null;
 163
 164                         EnsureModules ();
 165                         lock (modules) {
 166                                 foreach (IAuthenticationModule mod in modules) {
 167                                         Authorization auth = mod.PreAuthenticate (request, credentials);
 168                                         if (auth == null)
 169                                                 continue;
 170
 171                                         auth.ModuleAuthenticationType = mod.AuthenticationType;
 172                                         return auth;
 173                                 }
 174                         }
 175
 176                         return null;
 177                 }
 178
 179                 public static void Register (IAuthenticationModule authenticationModule)
 180                 {
 181                         if (authenticationModule == null)
 182                                 throw new ArgumentNullException ("authenticationModule");
 183
 184                         DoUnregister (authenticationModule.AuthenticationType, false);
 185                         lock (modules)
 186                                 modules.Add (authenticationModule);
 187                 }
 188
 189                 public static void Unregister (IAuthenticationModule authenticationModule)
 190                 {
 191                         if (authenticationModule == null)
 192                                 throw new ArgumentNullException ("authenticationModule");
 193
 194                         DoUnregister (authenticationModule.AuthenticationType, true);
 195                 }
 196
 197                 public static void Unregister (string authenticationScheme)
 198                 {
 199                         if (authenticationScheme == null)
 200                                 throw new ArgumentNullException ("authenticationScheme");
 201
 202                         DoUnregister (authenticationScheme, true);
 203                 }
 204
 205                 static void DoUnregister (string authenticationScheme, bool throwEx)
 206                 {
 207                         EnsureModules ();
 208                         lock (modules) {
 209                                 IAuthenticationModule module = null;
 210                                 foreach (IAuthenticationModule mod in modules) {
 211                                         string modtype = mod.AuthenticationType;
 212                                         if (String.Compare (modtype, authenticationScheme, true) == 0) {
 213                                                 module = mod;
 214                                                 break;
 215                                         }
 216                                 }
 217
 218                                 if (module == null) {
 219                                         if (throwEx)
 220                                                 throw new InvalidOperationException ("Scheme not registered.");
 221                                 } else {
 222                                         modules.Remove (module);
 223                                 }
 224                         }
 225                 }
 226         }
 227 }
 228