I have a website with a custom login module.

In this module I am trying to redirect the user to the home page set up in the settings (PortalSettings.HomeTabId) but only if the user has the correct role to view that page, I have got this functionality by hardcoding the role and I could also hardcode the role in the web.config but the most flexible solution would be to have some method return the permissions for PortalSettings.HomeTabId and if the user has a role that allows them to view the page, redirect them.

Does anyone have any idea of how to do this?

 This is a very basic and a quick attempt by me to find the permission setting

DotNetNuke.Security.Permissions.TabPermissionCollection tabPermColl = new DotNetNuke.Security.Permissions.TabPermissionCollection();
DotNetNuke.Security.Permissions.TabPermissionController tabPermCont = new DotNetNuke.Security.Permissions.TabPermissionController();
tabPermColl = tabPermCont.GetTabPermissionCollectionByTabID(TabID, PortalID);//Use PortalSettings.HomeTabId for TabID
foreach(DotNetNuke.Security.Permissions.TabPermissionInfo tpi in tabPermColl)
{
    //Check the properties of tpi (such as tpi.rolename) to check what it can do.
}
 

I think that will be a good starting point for you.