public FilterItem(FilterDescriptor descriptor)
{
if (descriptor == null)
{
throw new ArgumentNullException(nameof(descriptor));
}
Descriptor = descriptor;
}
public FilterItem(FilterDescriptor descriptor, IFilterMetadata filter)
: this(descriptor)
{
if (filter == null)
{
throw new ArgumentNullException(nameof(filter));
}
Filter = filter;
}
private void InsertControllerAsFilter(FilterProviderContext context, IFilter controllerFilter)
{
var descriptor = new FilterDescriptor(controllerFilter, FilterScope.Controller);
var item = new FilterItem(descriptor, controllerFilter);
// BinarySearch will return the index of where the item _should_be_ in the list.
//
// If index > 0:
// Other items in the list have the same order and scope - the item was 'found'.
//
// If index < 0:
// No other items in the list have the same order and scope - the item was not 'found'
// Index will be the bitwise compliment of of the 'right' location.
var index = context.Results.BinarySearch(item, FilterItemOrderComparer.Comparer);
if (index < 0)
{
index = ~index;
}
context.Results.Insert(index, item);
}
private AuthorizationContext GetAuthorizationContext(
FilterDescriptor[] filterDescriptors,
RequestHeaders headers = null,
bool isPreflight = false)
{
// HttpContext
var httpContext = new DefaultHttpContext();
if (headers != null)
{
httpContext.Request.Headers.Add(CorsConstants.AccessControlRequestHeaders, headers.Headers.Split(','));
httpContext.Request.Headers.Add(CorsConstants.AccessControlRequestMethod, new[] { headers.Method });
httpContext.Request.Headers.Add(CorsConstants.AccessControlExposeHeaders, headers.ExposedHeaders.Split(','));
httpContext.Request.Headers.Add(CorsConstants.Origin, new[] { headers.Origin });
}
var services = new ServiceCollection();
services.AddInstance<ILoggerFactory>(NullLoggerFactory.Instance);
httpContext.RequestServices = services.BuildServiceProvider();
var method = isPreflight ? CorsConstants.PreflightHttpMethod : "GET";
httpContext.Request.Method = method;
// AuthorizationContext
var actionContext = new ActionContext(
httpContext: httpContext,
routeData: new RouteData(),
actionDescriptor: new ActionDescriptor() { FilterDescriptors = filterDescriptors });
var authorizationContext = new AuthorizationContext(
actionContext,
filterDescriptors.Select(filter => filter.Filter).ToList()
);
return authorizationContext;
}
public FilterItem([NotNull] FilterDescriptor descriptor, [NotNull] IFilterMetadata filter)
: this(descriptor)
{
Filter = filter;
}
public FilterItem([NotNull] FilterDescriptor descriptor)
{
Descriptor = descriptor;
}