private static GraphiteCorsPolicy CreatePolicy(ActionMethod action)
{
var policy = new GraphiteCorsPolicy();
Add <CorsExposedHeadersAttribute>(policy.ExposedHeaders, action, x => x.Headers);
Add <CorsAllowedHeadersAttribute>(policy.Headers, action, x => x.Headers);
Add <CorsAllowedMethodsAttribute>(policy.Methods, action, x => x.Methods);
Add <CorsAllowedOriginsAttribute>(policy.Origins, action, x => x.Origins);
var corsAttribute = action.GetActionOrHandlerAttribute <CorsAttribute>();
if (corsAttribute != null)
{
policy.AllowOptionRequestsToPassThrough =
corsAttribute.AllowOptionRequestsToPassThrough;
policy.AllowRequestsWithoutOriginHeader =
corsAttribute.AllowRequestsWithoutOriginHeader;
policy.AllowRequestsThatFailCors =
corsAttribute.AllowRequestsThatFailCors;
policy.AllowAnyHeader = corsAttribute.AllowAnyHeader;
policy.AllowAnyMethod = corsAttribute.AllowAnyMethod;
policy.AllowAnyOrigin = corsAttribute.AllowAnyOrigin;
policy.PreflightMaxAge = corsAttribute.PreflightMaxAge;
policy.SupportsCredentials = corsAttribute.SupportsCredentials;
}
return(policy);
}
private static void Add <T>(IList <string> source, ActionMethod action,
Func <T, string[]> items) where T : Attribute
{
var attribute = action.GetActionOrHandlerAttribute <T>();
if (attribute != null && items(attribute).Any())
{
source.AddRange(items(attribute));
}
}