//
// System.Net.AuthenticationManager.cs
//
// Author:
// Miguel de Icaza (miguel@ximian.com)
// Gonzalo Paniagua Javier (gonzalo@ximian.com)
//
// (C) 2002,2003 Ximian, Inc. (http://www.ximian.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.
//
using System.Collections;
using System.Collections.Specialized;
using System.Configuration;
using System.Net.Configuration;
namespace System.Net{
#if MOONLIGHT
internal class AuthenticationManager {
#else
public class AuthenticationManager {
#endif
static ArrayList modules;
static object locker = new object ();
private AuthenticationManager ()
{
}
static void EnsureModules ()
{
lock (locker) {
if (modules != null)
return;
modules = new ArrayList ();
#if NET_2_1
modules.Add (new BasicClient ());
modules.Add (new DigestClient ());
modules.Add (new NtlmClient ());
#elif NET_2_0 && CONFIGURATION_DEP
object cfg = ConfigurationManager.GetSection ("system.net/authenticationModules");
AuthenticationModulesSection s = cfg as AuthenticationModulesSection;
if (s != null) {
foreach (AuthenticationModuleElement element in s.AuthenticationModules) {
IAuthenticationModule module = null;
try {
Type type = Type.GetType (element.Type, true);
module = (IAuthenticationModule) Activator.CreateInstance (type);
} catch {}
modules.Add (module);
}
}
#else
ConfigurationSettings.GetConfig ("system.net/authenticationModules");
#endif
}
}
static ICredentialPolicy credential_policy = null;
public static ICredentialPolicy CredentialPolicy
{
get {
return(credential_policy);
}
set {
credential_policy = value;
}
}
static Exception GetMustImplement ()
{
return new NotImplementedException ();
}
[MonoTODO]
public static StringDictionary CustomTargetNameDictionary
{
get {
throw GetMustImplement ();
}
}
public static IEnumerator RegisteredModules {
get {
EnsureModules ();
return modules.GetEnumerator ();
}
}
internal static void Clear ()
{
EnsureModules ();
lock (modules)
modules.Clear ();
}
public static Authorization Authenticate (string challenge, WebRequest request, ICredentials credentials)
{
if (request == null)
throw new ArgumentNullException ("request");
if (credentials == null)
throw new ArgumentNullException ("credentials");
if (challenge == null)
throw new ArgumentNullException ("challenge");
return DoAuthenticate (challenge, request, credentials);
}
static Authorization DoAuthenticate (string challenge, WebRequest request, ICredentials credentials)
{
EnsureModules ();
lock (modules) {
foreach (IAuthenticationModule mod in modules) {
Authorization auth = mod.Authenticate (challenge, request, credentials);
if (auth == null)
continue;
auth.Module = mod;
return auth;
}
}
return null;
}
public static Authorization PreAuthenticate (WebRequest request, ICredentials credentials)
{
if (request == null)
throw new ArgumentNullException ("request");
if (credentials == null)
return null;
EnsureModules ();
lock (modules) {
foreach (IAuthenticationModule mod in modules) {
Authorization auth = mod.PreAuthenticate (request, credentials);
if (auth == null)
continue;
auth.Module = mod;
return auth;
}
}
return null;
}
public static void Register (IAuthenticationModule authenticationModule)
{
if (authenticationModule == null)
throw new ArgumentNullException ("authenticationModule");
DoUnregister (authenticationModule.AuthenticationType, false);
lock (modules)
modules.Add (authenticationModule);
}
public static void Unregister (IAuthenticationModule authenticationModule)
{
if (authenticationModule == null)
throw new ArgumentNullException ("authenticationModule");
DoUnregister (authenticationModule.AuthenticationType, true);
}
public static void Unregister (string authenticationScheme)
{
if (authenticationScheme == null)
throw new ArgumentNullException ("authenticationScheme");
DoUnregister (authenticationScheme, true);
}
static void DoUnregister (string authenticationScheme, bool throwEx)
{
EnsureModules ();
lock (modules) {
IAuthenticationModule module = null;
foreach (IAuthenticationModule mod in modules) {
string modtype = mod.AuthenticationType;
if (String.Compare (modtype, authenticationScheme, true) == 0) {
module = mod;
break;
}
}
if (module == null) {
if (throwEx)
throw new InvalidOperationException ("Scheme not registered.");
} else {
modules.Remove (module);
}
}
}
}
}
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