/// <summary>
/// Determines whether the current permission is a subset of the specified permission.
/// </summary>
/// <param name="target">A permission that is to be tested for the subset relationship. This permission must be the same type as the current permission.</param>
/// <returns><b>true</b> if the current permission is a subset of the specified permission; otherwise, <b>false</b>.</returns>
/// <exception cref="ArgumentException"><i>target</i> is not of the same type as the current permission.</exception>
public override bool IsSubsetOf(IPermission target)
{
if (target == null)
{
return(this.IsEmpty());
}
SmartcardPermission permission = target as SmartcardPermission;
if (permission == null)
{
throw new ArgumentException(ResourceController.GetString("Error_ParamInvalid"));
}
if (permission.IsUnrestricted() || this.IsEmpty())
{
return(true);
}
if (this.IsUnrestricted() || permission.IsEmpty())
{
return(false);
}
// if we get here, both permissions are set to 'AllowedAtrs'
foreach (Atr a in this.m_AllowedAtrs)
{
if (!permission.m_AllowedAtrs.Contains(a))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Creates a permission that is the union of the current permission and the specified permission.
/// </summary>
/// <param name="target">A permission to combine with the current permission. It must be the same type as the current permission.</param>
/// <returns>A new permission that represents the union of the current permission and the specified permission.</returns>
/// <exception cref="ArgumentException"><i>target</i> is not of the same type as the current permission.</exception>
public override IPermission Union(IPermission target)
{
if (target == null)
{
return(this.Copy());
}
SmartcardPermission permission = target as SmartcardPermission;
if (permission == null)
{
throw new ArgumentException(ResourceController.GetString("Error_ParamInvalid"));
}
SmartcardPermission retPerm = new SmartcardPermission((this.IsUnrestricted() || permission.IsUnrestricted()) ? SmartcardConnectOption.Unrestricted : this.m_Options, this.m_AllowedAtrs);
if (!retPerm.IsUnrestricted())
{
foreach (Atr a in permission.m_AllowedAtrs)
{
if (!retPerm.m_AllowedAtrs.Contains(a))
{
retPerm.m_AllowedAtrs.AddLast((Atr)a.Clone());
}
}
if ((permission.IsEmpty() && this.IsEmpty()))
{
retPerm.m_Options = SmartcardConnectOption.None;
}
else
{
retPerm.m_Options = SmartcardConnectOption.AllowedAtrs;
}
}
return(retPerm);
}
/// <summary>
/// Creates and returns a permission that is the intersection of the current permission and the specified permission.
/// </summary>
/// <param name="target">A permission to intersect with the current permission. It must be the same type as the current permission. </param>
/// <returns>A new permission that represents the intersection of the current permission and the specified permission. This new permission is a null reference if the intersection is empty.</returns>
/// <exception cref="ArgumentException"><i>target</i> is not of the same type as the current permission.</exception>
public override IPermission Intersect(IPermission target)
{
if (target == null)
{
return(null);
}
SmartcardPermission permission = target as SmartcardPermission;
if (permission == null)
{
throw new ArgumentException(ResourceController.GetString("Error_ParamInvalid"));
}
if (this.IsUnrestricted() || permission.IsEmpty())
{
return(permission.Copy());
}
if (permission.IsUnrestricted() || this.IsEmpty())
{
return(this.Copy());
}
// if we get here, both permissions are set to 'AllowedAtrs'
SmartcardPermission retPerm = new SmartcardPermission(SmartcardConnectOption.AllowedAtrs);
foreach (Atr a in this.m_AllowedAtrs)
{
if (permission.m_AllowedAtrs.Contains(a))
{
retPerm.m_AllowedAtrs.AddLast(a);
}
}
if (retPerm.m_AllowedAtrs.Count == 0)
{
retPerm.m_Options = SmartcardConnectOption.None;
}
return(retPerm);
}
/// <summary>
/// Creates a permission that is the union of the current permission and the specified permission.
/// </summary>
/// <param name="target">A permission to combine with the current permission. It must be the same type as the current permission.</param>
/// <returns>A new permission that represents the union of the current permission and the specified permission.</returns>
/// <exception cref="ArgumentException"><i>target</i> is not of the same type as the current permission.</exception>
public override IPermission Union(IPermission target) {
if (target == null)
return this.Copy();
SmartcardPermission permission = target as SmartcardPermission;
if (permission == null)
throw new ArgumentException(ResourceController.GetString("Error_ParamInvalid"));
SmartcardPermission retPerm = new SmartcardPermission((this.IsUnrestricted() || permission.IsUnrestricted()) ? SmartcardConnectOption.Unrestricted : this.m_Options, this.m_AllowedAtrs);
if (!retPerm.IsUnrestricted()) {
foreach (Atr a in permission.m_AllowedAtrs) {
if (!retPerm.m_AllowedAtrs.Contains(a)) {
retPerm.m_AllowedAtrs.AddLast((Atr)a.Clone());
}
}
if ((permission.IsEmpty() && this.IsEmpty()))
retPerm.m_Options = SmartcardConnectOption.None;
else
retPerm.m_Options = SmartcardConnectOption.AllowedAtrs;
}
return retPerm;
}
