AuthorizationContext Class

Definition

public ref class AuthorizationContext abstract : System::IdentityModel::Policy::IAuthorizationComponent

public abstract class AuthorizationContext : System.IdentityModel.Policy.IAuthorizationComponent

type AuthorizationContext = class
    interface IAuthorizationComponent

Public MustInherit Class AuthorizationContext
Implements IAuthorizationComponent

Inheritance

Object

AuthorizationContext

Implements

IAuthorizationComponent

Examples

protected override bool CheckAccessCore(OperationContext operationContext)
{
    // Extract the action URI from the OperationContext. Match this against the claims
    // in the AuthorizationContext.
    string action = operationContext.RequestContext.RequestMessage.Headers.Action;
    Console.WriteLine("action: {0}", action);

    // Iterate through the various claim sets in the AuthorizationContext.
    foreach (ClaimSet cs in operationContext.ServiceSecurityContext.AuthorizationContext.ClaimSets)
    {
        // Examine only those claim sets issued by System.
        if (cs.Issuer == ClaimSet.System)
        {
            // Iterate through claims of type "http://example.org/claims/allowedoperation".
            foreach (Claim 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())
                    return true;
            }
        }
    }

    // If this point is reached, return false to deny access.
    return false;
}

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

Remarks

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.

Constructors

Properties

Methods

Applies to