AuthorizationContext Class

The result of evaluating all authorization policies available from the tokens in the sent message and by calling the GetAuthorizationPolicies method.

Namespace:  System.IdentityModel.Policy
Assembly:  System.IdentityModel (in System.IdentityModel.dll)

'Declaration
Public MustInherit Class AuthorizationContext _
	Implements IAuthorizationComponent
'Usage
Dim instance As AuthorizationContext

Evaluating all of the authorization policies in an authorization manager results in a set of ClaimSet objects. These objects make up an authorization context.

An authorization context contains a set of claim set objects, an expiration time that specifies the span of time during which the authorization context is valid, and a unique identifier.

The AuthorizationContext for the current operation can be accessed via the AuthorizationContext property.

Protected Overrides Function CheckAccessCore(ByVal operationContext As OperationContext) As Boolean 
    ' Extract the action URI from the OperationContext. Match this against the claims 
    ' in the AuthorizationContext. 
    Dim action As String = operationContext.RequestContext.RequestMessage.Headers.Action
    Console.WriteLine("action: {0}", action)

    ' Iterate through the various claim sets in the AuthorizationContext. 
    Dim cs As ClaimSet
    For Each cs In operationContext.ServiceSecurityContext.AuthorizationContext.ClaimSets
        ' Examine only those claim sets issued by System. 
        If cs.Issuer Is ClaimSet.System Then 
            ' Iterate through claims of type "http://example.org/claims/allowedoperation". 
            Dim c As Claim
            For Each c In cs.FindClaims("http://example.org/claims/allowedoperation", Rights.PossessProperty)
                ' Write the Claim resource to the console.
                Console.WriteLine("resource: {0}", c.Resource.ToString())

                ' If the Claim resource matches the action URI then return true to allow access. 
                If action = c.Resource.ToString() Then 
                    Return True 
                End If 
            Next c
        End If 
    Next cs
    ' If we get here, return false, denying access. 
    Return False 

End Function

System.Object
  System.IdentityModel.Policy.AuthorizationContext

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003

The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

.NET Framework

Supported in: 3.5, 3.0
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