Ejemplo n.º 1
0
        /// <summary>
        /// <para>Returns the logical union between two <see cref='System.Net.PeerToPeer.PnrpPermission'/> instances.</para>
        /// </summary>
        public override IPermission Union(IPermission target)
        {
            // Pattern suggested by Security engine
            if (target == null)
            {
                return(this.Copy());
            }
            PnrpPermission other = target as PnrpPermission;

            if (other == null)
            {
                throw new ArgumentException(SR.GetString(SR.PnrpPermission_CantUnionWithNonPnrpPermission), "target");
            }
            return(new PnrpPermission(m_noRestriction || other.m_noRestriction));
        }
Ejemplo n.º 2
0
        /// <summary>
        /// <para>Compares two <see cref='System.Net.PeerToPeer.PnrpPermission'/> instances.</para>
        /// </summary>
        public override bool IsSubsetOf(IPermission target)
        {
            // Pattern suggested by Security engine
            if (target == null)
            {
                return(m_noRestriction == false);
            }
            PnrpPermission other = target as PnrpPermission;

            if (other == null)
            {
                throw new ArgumentException(SR.GetString(SR.PnrpPermission_TargetNotAPnrpPermission), "target");
            }
            //Here is the matrix of result based on m_noRestriction for me and she
            //    me.noRestriction      she.noRestriction   me.isSubsetOf(she)
            //                  0       0                   1
            //                  0       1                   1
            //                  1       0                   0
            //                  1       1                   1
            return(!m_noRestriction || other.m_noRestriction);
        }
Ejemplo n.º 3
0
        /// <summary>
        /// <para>Returns the logical intersection between two <see cref='System.Net.PeerToPeer.PnrpPermission'/> instances.</para>
        /// </summary>
        public override IPermission Intersect(IPermission target)
        {
            // Pattern suggested by Security engine
            if (target == null)
            {
                return(null);
            }
            PnrpPermission other = target as PnrpPermission;

            if (other == null)
            {
                throw new ArgumentException(SR.GetString(SR.PnrpPermission_CantIntersectWithNonPnrpPermission), "target");
            }
            // return null if resulting permission is restricted and empty
            // Hence, the only way for a bool permission will be.
            if (this.m_noRestriction && other.m_noRestriction)
            {
                return(new PnrpPermission(true));
            }
            return(null);
        }