/// <summary>
/// Retrieves a <see cref="T:System.Web.SiteMapNode"/> object that represents the currently requested page using the specified <see cref="T:System.Web.HttpContext"/> object.
/// </summary>
/// <param name="context">The <see cref="T:System.Web.HttpContext"/> used to match node information with the URL of the requested page.</param>
/// <returns>
/// A <see cref="T:System.Web.SiteMapNode"/> that represents the currently requested page; otherwise, null, if no corresponding <see cref="T:System.Web.SiteMapNode"/> can be found in the <see cref="T:System.Web.SiteMapNode"/> or if the page context is null.
/// </returns>
public override SiteMapNode FindSiteMapNode(HttpContext context)
{
var httpContext = new HttpContext2(context);
var routeData = RouteTable.Routes.GetRouteData(httpContext);
var currentNode = FindSiteMapNode(HttpContext.Current, routeData);
if (HttpContext.Current.Items[currentNodeCacheKey] == null)
{
HttpContext.Current.Items[currentNodeCacheKey] = currentNode;
}
return currentNode;
}
/// <summary>
/// Determines whether node is accessible to user.
/// </summary>
/// <param name="controllerTypeResolver">The controller type resolver.</param>
/// <param name="provider">The provider.</param>
/// <param name="context">The context.</param>
/// <param name="node">The node.</param>
/// <returns>
/// <c>true</c> if accessible to user; otherwise, <c>false</c>.
/// </returns>
public bool IsAccessibleToUser(IControllerTypeResolver controllerTypeResolver, DefaultSiteMapProvider provider, HttpContext context, SiteMapNode node)
{
// Is security trimming enabled?
if (!provider.SecurityTrimmingEnabled)
{
return true;
}
// Is it an external node?
if (node.Url.StartsWith("http") || node.Url.StartsWith("ftp") || node.Url.StartsWith("javascript") || node.Url.StartsWith("mailto"))
{
return true;
}
// Is it a regular node?
var mvcNode = node as MvcSiteMapNode;
if (mvcNode == null)
{
throw new AclModuleNotSupportedException(
Resources.Messages.AclModuleDoesNotSupportRegularSiteMapNodes);
}
// Clickable? Always accessible.
if (mvcNode.Clickable == false)
{
return true;
}
// Time to delve into the AuthorizeAttribute defined on the node.
// Let's start by getting all metadata for the controller...
var controllerType = controllerTypeResolver.ResolveControllerType(mvcNode.Area, mvcNode.Controller);
if (controllerType == null)
{
return false;
}
// Find routes for the sitemap node's url
HttpContextBase httpContext = new HttpContextWrapper(context);
string originalPath = httpContext.Request.Path;
var originalRoutes = RouteTable.Routes.GetRouteData(httpContext);
httpContext.RewritePath(node.Url, true);
HttpContextBase httpContext2 = new HttpContext2(context);
RouteData routes = mvcNode.GetRouteData(httpContext2);
foreach (var routeValue in mvcNode.RouteValues)
{
routes.Values[routeValue.Key] = routeValue.Value;
}
if (!routes.Route.Equals(originalRoutes.Route) || originalPath != node.Url || mvcNode.Area == String.Empty)
{
routes.DataTokens.Remove("area");
//routes.DataTokens.Remove("Namespaces");
//routes.Values.Remove("area");
}
var requestContext = new RequestContext(httpContext, routes);
// Create controller context
var controllerContext = new ControllerContext();
controllerContext.RequestContext = requestContext;
try
{
string controllerName = requestContext.RouteData.GetRequiredString("controller");
controllerContext.Controller = ControllerBuilder.Current.GetControllerFactory().CreateController(requestContext, controllerName) as ControllerBase;
}
catch
{
try
{
controllerContext.Controller = Activator.CreateInstance(controllerType) as ControllerBase;
}
catch
{
}
}
ControllerDescriptor controllerDescriptor = null;
if (typeof(IController).IsAssignableFrom(controllerType))
{
controllerDescriptor = new ReflectedControllerDescriptor(controllerType);
}
else if (typeof(IAsyncController).IsAssignableFrom(controllerType))
{
controllerDescriptor = new ReflectedAsyncControllerDescriptor(controllerType);
}
ActionDescriptor actionDescriptor = null;
try
{
actionDescriptor = controllerDescriptor.FindAction(controllerContext, mvcNode.Action);
}
catch
{
}
if (actionDescriptor == null)
{
actionDescriptor = controllerDescriptor.GetCanonicalActions().Where(a => a.ActionName == mvcNode.Action).FirstOrDefault();
}
// Verify security
try
{
if (actionDescriptor != null)
{
//#if NET35
IEnumerable<AuthorizeAttribute> authorizeAttributesToCheck =
actionDescriptor.GetCustomAttributes(typeof(AuthorizeAttribute), true).OfType
<AuthorizeAttribute>().ToList()
.Union(
controllerDescriptor.GetCustomAttributes(typeof(AuthorizeAttribute), true).OfType
<AuthorizeAttribute>().ToList());
//#else
// IEnumerable<AuthorizeAttribute> authorizeAttributesToCheck = ;
// FilterProviders.Providers.GetFilters(controllerContext, actionDescriptor)
// .Where(f => typeof(AuthorizeAttribute).IsAssignableFrom(f.Instance.GetType()))
// .Select(f => f.Instance as AuthorizeAttribute);
//#endif
// Verify all attributes
foreach (var authorizeAttribute in authorizeAttributesToCheck)
{
try
{
var currentAuthorizationAttributeType = authorizeAttribute.GetType();
var builder = new AuthorizeAttributeBuilder();
var subclassedAttribute =
currentAuthorizationAttributeType == typeof(AuthorizeAttribute) ?
new InternalAuthorize(authorizeAttribute) : // No need to use Reflection.Emit when ASP.NET MVC built-in attribute is used
(IAuthorizeAttribute)builder.Build(currentAuthorizationAttributeType).Invoke(null);
// Copy all properties
ObjectCopier.Copy(authorizeAttribute, subclassedAttribute);
if (!subclassedAttribute.IsAuthorized(controllerContext.HttpContext))
{
return false;
}
}
catch
{
// do not allow on exception
return false;
}
}
}
// No objection.
return true;
}
finally
{
// Restore HttpContext
httpContext.RewritePath(originalPath, true);
}
}
/// <summary>
/// Finds the site map node.
/// </summary>
/// <param name="context">The context.</param>
/// <param name="routeData">The route data.</param>
/// <returns></returns>
private SiteMapNode FindSiteMapNode(HttpContext context, RouteData routeData)
{
// Node
SiteMapNode node = null;
// Fetch route data
var httpContext = new HttpContext2(context);
if (routeData != null)
{
RequestContext requestContext = new RequestContext(httpContext, routeData);
VirtualPathData vpd = routeData.Route.GetVirtualPath(
requestContext, routeData.Values);
string appPathPrefix = (requestContext.HttpContext.Request.ApplicationPath
?? string.Empty).TrimEnd('/') + "/";
node = base.FindSiteMapNode(
requestContext.HttpContext.Response.ApplyAppPathModifier(appPathPrefix + vpd.VirtualPath)) as MvcSiteMapNode;
if (!routeData.Values.ContainsKey("area"))
{
if (routeData.DataTokens["area"] != null)
{
routeData.Values.Add("area", routeData.DataTokens["area"]);
}
else
{
routeData.Values.Add("area", "");
}
}
MvcSiteMapNode mvcNode = node as MvcSiteMapNode;
if (mvcNode == null || routeData.Route != RouteTable.Routes[mvcNode.Route])
{
if (NodeMatchesRoute(RootNode as MvcSiteMapNode, routeData.Values))
{
node = RootNode;
}
}
if (node == null)
{
node = FindControllerActionNode(RootNode, routeData.Values, routeData.Route);
}
}
// Try base class
if (node == null)
{
node = base.FindSiteMapNode(context);
}
// Check accessibility
if (node != null)
{
if (node.IsAccessibleToUser(context))
{
return node;
}
}
return null;
}