// ----------------------------------------------------------------------------
//
//  Copyright (c) Microsoft Corporation.  All rights reserved.
//
// ----------------------------------------------------------------------------

namespace Microsoft.Singularity.Security
{
    using System;
    using System.Collections;
    using Microsoft.Singularity.Channels;
    using Microsoft.Singularity.V1.Security;

    /// <summary>
    /// A Principal struct is representation of a principal.
    /// The security service evaluates ACLs and
    ///     retrieve names associated with principals.  See the
    ///     security library.
    /// </summary>

    /// This is the kernel version of Principal.sg.

    public struct Principal
    {
        private readonly ulong val;

        public bool Equal(Principal id) { return (this.Val == id.Val); }

        public static Principal Self()
        {
            return PrincipalImpl.Self();
        }

        public ulong Val { get { return this.val; } }

        public string! GetName()
        {
            return PrincipalImpl.GetPrincipalName(this);
        }

        public static Principal EndpointPeer(Endpoint*! in ExHeap ep)
        {
            return new Principal(ep->PeerPrincipalHandle.val);
        }

        public static string ExpandAclIndirection(string! name)
        {
            return PrincipalImpl.ExpandAclIndirection(name);
        }

        internal Principal(ulong val)
        {
            this.val = val;
        }
        
        public ArrayList GetHashes()
        {
            return PrincipalImpl.GetPrincipalHashes(this);
        }
    }
}