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AuthorizationContext Class

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

System.Object
  System.IdentityModel.Policy.AuthorizationContext

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

public abstract class AuthorizationContext : IAuthorizationComponent

The AuthorizationContext type exposes the following members.

  NameDescription
Protected methodAuthorizationContextInitializes a new instance of the AuthorizationContext class.
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  NameDescription
Public propertyClaimSetsGets the set of claims associated with an authorization policy.
Public propertyExpirationTimeGets the date and time at which this AuthorizationContext object is no longer valid.
Public propertyIdGets a unique identifier for this AuthorizationContext object.
Public propertyPropertiesGets a collection of non-claim properties associated with this AuthorizationContext object.
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  NameDescription
Public methodStatic memberCreateDefaultAuthorizationContextEvaluate all of the specified authorization policies and create an AuthorizationContext.
Public methodEquals(Object)Determines whether the specified Object is equal to the current Object. (Inherited from Object.)
Protected methodFinalizeAllows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.)
Public methodGetHashCodeServes as a hash function for a particular type. (Inherited from Object.)
Public methodGetTypeGets the Type of the current instance. (Inherited from Object.)
Protected methodMemberwiseCloneCreates a shallow copy of the current Object. (Inherited from Object.)
Public methodToStringReturns a string that represents the current object. (Inherited from Object.)
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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 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;                 
}


.NET Framework

Supported in: 4, 3.5, 3.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

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

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