2 The software in this package is distributed under the GNU General
3 Public License version 2 (with a special exception described below).
5 A copy of GNU General Public License (GPL) is included in this distribution,
6 in the file COPYING.GPL.
8 As a special exception, if other files instantiate templates or use macros
9 or inline functions from this file, or you compile this file and link it
10 with other works to produce a work based on this file, this file
11 does not by itself cause the resulting work to be covered
12 by the GNU General Public License.
14 However the source code for this file must still be made available
15 in accordance with section (3) of the GNU General Public License.
17 This exception does not invalidate any other reasons why a work based
18 on this file might be covered by the GNU General Public License.
20 Christian Herdtweck, Intra2net AG 2015
28 #include <boost/shared_ptr.hpp>
29 #include <boost/asio/deadline_timer.hpp>
30 #include <boost/system/error_code.hpp>
32 #include "host/pinger.h" // for IoserviceItem
33 #include "dns/hostaddress.h"
35 typedef std::vector<HostAddress> HostAddressVec;
36 typedef std::map<std::string, HostAddressVec> ip_map_type;
37 typedef std::map<std::string, std::string> cname_map_type;
42 DnsCache( const IoServiceItem &io_serv,
43 const std::string &cache_file );
46 // accessed from ResolverBase subclasses
47 void update(const std::string &hostname, const HostAddressVec &new_data);
48 void update(const std::string &hostname, const std::string &cname);
49 void update_ttl(const std::string &hostname, const uint32_t ttl);
50 HostAddressVec& get_ips(const std::string &hostname);
51 std::string& get_cname(const std::string &hostname);
52 HostAddressVec& get_ips_recursive(const std::string &hostname);
57 cname_map_type CnameCache;
58 boost::asio::deadline_timer SaveTimer;
59 std::string CacheFile;
64 void schedule_save(const boost::system::error_code &error);
65 void save_to_cachefile();
66 void load_from_cachefile();
70 typedef boost::shared_ptr<DnsCache> DnsCacheItem;
74 // (created using vim -- the world's best text editor)