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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.

Namespace:  System.IdentityModel.Policy
Assembly:  System.IdentityModel (in System.IdentityModel.dll)
public abstract class AuthorizationContext : IAuthorizationComponent

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;                 
}
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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