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//-----------------------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//-----------------------------------------------------------------------------
namespace System.ServiceModel.Dispatcher
{
using System.Collections.ObjectModel;
using System.Diagnostics;
using System.Globalization;
using System.IdentityModel.Policy;
using System.Runtime;
using System.Runtime.CompilerServices;
using System.ServiceModel;
using System.ServiceModel.Diagnostics;
using System.ServiceModel.Diagnostics.Application;
using System.ServiceModel.Security;
sealed class AuthorizationBehavior
{
static ServiceAuthorizationManager DefaultServiceAuthorizationManager = new ServiceAuthorizationManager();
ReadOnlyCollection<IAuthorizationPolicy> externalAuthorizationPolicies;
ServiceAuthorizationManager serviceAuthorizationManager;
AuditLogLocation auditLogLocation;
bool suppressAuditFailure;
AuditLevel serviceAuthorizationAuditLevel;
AuthorizationBehavior() { }
public void Authorize(ref MessageRpc rpc)
{
if (TD.DispatchMessageBeforeAuthorizationIsEnabled())
{
TD.DispatchMessageBeforeAuthorization(rpc.EventTraceActivity);
}
SecurityMessageProperty security = SecurityMessageProperty.GetOrCreate(rpc.Request);
security.ExternalAuthorizationPolicies = this.externalAuthorizationPolicies;
ServiceAuthorizationManager serviceAuthorizationManager = this.serviceAuthorizationManager ?? DefaultServiceAuthorizationManager;
try
{
if (!serviceAuthorizationManager.CheckAccess(rpc.OperationContext, ref rpc.Request))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(CreateAccessDeniedFaultException());
}
}
catch (Exception ex)
{
if (Fx.IsFatal(ex))
{
throw;
}
if (PerformanceCounters.PerformanceCountersEnabled)
{
PerformanceCounters.AuthorizationFailed(rpc.Operation.Name);
}
if (AuditLevel.Failure == (this.serviceAuthorizationAuditLevel & AuditLevel.Failure))
{
try
{
string primaryIdentity;
string authContextId = null;
AuthorizationContext authContext = security.ServiceSecurityContext.AuthorizationContext;
if (authContext != null)
{
primaryIdentity = SecurityUtils.GetIdentityNamesFromContext(authContext);
authContextId = authContext.Id;
}
else
{
primaryIdentity = SecurityUtils.AnonymousIdentity.Name;
authContextId = "<null>";
}
SecurityAuditHelper.WriteServiceAuthorizationFailureEvent(this.auditLogLocation,
this.suppressAuditFailure, rpc.Request, rpc.Request.Headers.To, rpc.Request.Headers.Action,
primaryIdentity, authContextId,
serviceAuthorizationManager == DefaultServiceAuthorizationManager ? "<default>" : serviceAuthorizationManager.GetType().Name,
ex);
}
#pragma warning suppress 56500
catch (Exception auditException)
{
if (Fx.IsFatal(auditException))
throw;
DiagnosticUtility.TraceHandledException(auditException, TraceEventType.Error);
}
}
throw;
}
if (AuditLevel.Success == (this.serviceAuthorizationAuditLevel & AuditLevel.Success))
{
string primaryIdentity;
string authContextId;
AuthorizationContext authContext = security.ServiceSecurityContext.AuthorizationContext;
if (authContext != null)
{
primaryIdentity = SecurityUtils.GetIdentityNamesFromContext(authContext);
authContextId = authContext.Id;
}
else
{
primaryIdentity = SecurityUtils.AnonymousIdentity.Name;
authContextId = "<null>";
}
SecurityAuditHelper.WriteServiceAuthorizationSuccessEvent(this.auditLogLocation,
this.suppressAuditFailure, rpc.Request, rpc.Request.Headers.To, rpc.Request.Headers.Action,
primaryIdentity, authContextId,
serviceAuthorizationManager == DefaultServiceAuthorizationManager ? "<default>" : serviceAuthorizationManager.GetType().Name);
}
}
[MethodImpl(MethodImplOptions.NoInlining)]
static AuthorizationBehavior CreateAuthorizationBehavior(DispatchRuntime dispatch)
{
AuthorizationBehavior behavior = new AuthorizationBehavior();
behavior.externalAuthorizationPolicies = dispatch.ExternalAuthorizationPolicies;
behavior.serviceAuthorizationManager = dispatch.ServiceAuthorizationManager;
behavior.auditLogLocation = dispatch.SecurityAuditLogLocation;
behavior.suppressAuditFailure = dispatch.SuppressAuditFailure;
behavior.serviceAuthorizationAuditLevel = dispatch.ServiceAuthorizationAuditLevel;
return behavior;
}
public static AuthorizationBehavior TryCreate(DispatchRuntime dispatch)
{
if (dispatch == null)
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentNullException("dispatch"));
if (!dispatch.RequiresAuthorization)
return null;
return CreateAuthorizationBehavior(dispatch);
}
internal static Exception CreateAccessDeniedFaultException()
{
// always use default version?
SecurityVersion wss = SecurityVersion.Default;
FaultCode faultCode = FaultCode.CreateSenderFaultCode(wss.FailedAuthenticationFaultCode.Value, wss.HeaderNamespace.Value);
FaultReason faultReason = new FaultReason(SR.GetString(SR.AccessDenied), CultureInfo.CurrentCulture);
return new FaultException(faultReason, faultCode);
}
}
}
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