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       1                 :            : // Copyright (C) 2010  Internet Systems Consortium, Inc. ("ISC")
       2                 :            : //
       3                 :            : // Permission to use, copy, modify, and/or distribute this software for any
       4                 :            : // purpose with or without fee is hereby granted, provided that the above
       5                 :            : // copyright notice and this permission notice appear in all copies.
       6                 :            : //
       7                 :            : // THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
       8                 :            : // REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
       9                 :            : // AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
      10                 :            : // INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
      11                 :            : // LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
      12                 :            : // OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
      13                 :            : // PERFORMANCE OF THIS SOFTWARE.
      14                 :            : 
      15                 :            : #ifndef __GLUE_HINTS_H
      16                 :            : #define __GLUE_HINTS_H
      17                 :            : 
      18                 :            : #include <vector>
      19                 :            : 
      20                 :            : #include <dns/message.h>
      21                 :            : 
      22                 :            : #include "nsas_types.h"
      23                 :            : #include "nameserver_address.h"
      24                 :            : 
      25                 :            : namespace isc {
      26                 :            : namespace nsas {
      27                 :            : 
      28         [ +  - ]:     402045 : class GlueHints {
      29                 :            : public:
      30                 :            :     /// \brief Empty constructor
      31                 :     804086 :     GlueHints() {};
      32                 :            : 
      33                 :            :     /// \brief Constructor
      34                 :            :     ///
      35                 :            :     /// Creates a glue hint object, with the glue data found in the
      36                 :            :     /// given packet.
      37                 :            :     ///
      38                 :            :     /// \param zone_name The name of the zone to find glue for
      39                 :            :     /// \param delegation_message The Message that may contain glue
      40                 :            :     GlueHints(const std::string& zone_name,
      41                 :            :               const isc::dns::Message& delegation_message);
      42                 :            : 
      43                 :            :     /// \brief Check if there is glue for the given AddressFamily
      44                 :            :     ///
      45                 :            :     /// \param family the AddressFamily to check for glue for
      46                 :            :     /// \return true if there is glue for that family. false if not
      47                 :            :     bool hasGlue(AddressFamily family) const;
      48                 :            : 
      49                 :            :     /// \brief Get a random glue address for the given family
      50                 :            :     ///
      51                 :            :     /// ONLY call this if hasGlue() returned true.
      52                 :            :     ///
      53                 :            :     /// \param family the AddressFamily to get glue for
      54                 :            :     /// \return a NameserverAddress specified by the glue
      55                 :            :     NameserverAddress getGlue(AddressFamily family) const;
      56                 :            : 
      57                 :            : private:
      58                 :            :     void addGlueForName(const isc::dns::Name& name,
      59                 :            :                         const isc::dns::Message& message);
      60                 :            :     void addGlueForRRset(const isc::dns::RRsetPtr rrset,
      61                 :            :                          const isc::dns::Message& message);
      62                 :            : 
      63                 :            :     std::vector<NameserverAddress> addresses_v4;
      64                 :            :     std::vector<NameserverAddress> addresses_v6;
      65                 :            : };
      66                 :            : 
      67                 :            : }
      68                 :            : }
      69                 :            : 
      70                 :            : 
      71                 :            : #endif // __GLUE_HINTS_H