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// Copyright (C) 2010 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#ifndef GLUE_HINTS_H
#define GLUE_HINTS_H
#include <vector>
#include <dns/message.h>
#include "nsas_types.h"
#include "nameserver_address.h"
namespace isc {
namespace nsas {
class GlueHints {
public:
/// \brief Empty constructor
GlueHints() {};
/// \brief Constructor
///
/// Creates a glue hint object, with the glue data found in the
/// given packet.
///
/// \param zone_name The name of the zone to find glue for
/// \param delegation_message The Message that may contain glue
GlueHints(const std::string& zone_name,
const isc::dns::Message& delegation_message);
/// \brief Check if there is glue for the given AddressFamily
///
/// \param family the AddressFamily to check for glue for
/// \return true if there is glue for that family. false if not
bool hasGlue(AddressFamily family) const;
/// \brief Get a random glue address for the given family
///
/// ONLY call this if hasGlue() returned true.
///
/// \param family the AddressFamily to get glue for
/// \return a NameserverAddress specified by the glue
NameserverAddress getGlue(AddressFamily family) const;
private:
void addGlueForName(const isc::dns::Name& name,
const isc::dns::Message& message);
void addGlueForRRset(const isc::dns::RRsetPtr rrset,
const isc::dns::Message& message);
std::vector<NameserverAddress> addresses_v4;
std::vector<NameserverAddress> addresses_v6;
};
}
}
#endif // GLUE_HINTS_H
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