modules/geoipbackend/geoipbackend.hh

   1 /*
   2  * This file is part of PowerDNS or dnsdist.
   3  * Copyright -- PowerDNS.COM B.V. and its contributors
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of version 2 of the GNU General Public License as
   7  * published by the Free Software Foundation.
   8  *
   9  * In addition, for the avoidance of any doubt, permission is granted to
  10  * link this program with OpenSSL and to (re)distribute the binaries
  11  * produced as the result of such linking.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  21  */
  22 #pragma once
  23 #include "pdns/namespaces.hh"
  24
  25 #include <vector>
  26 #include <map>
  27 #include <string>
  28 #include <pthread.h>
  29 #include <sys/types.h>
  30 #include <dirent.h>
  31
  32 #include "pdns/dnspacket.hh"
  33 #include "pdns/dns.hh"
  34 #include "pdns/dnsbackend.hh"
  35 #include "pdns/lock.hh"
  36
  37 class GeoIPInterface;
  38
  39 struct GeoIPDomain;
  40
  41 struct GeoIPNetmask {
  42   int netmask;
  43 };
  44
  45 class GeoIPBackend: public DNSBackend {
  46 public:
  47   GeoIPBackend(const std::string& suffix="");
  48   ~GeoIPBackend();
  49
  50   void lookup(const QType &qtype, const DNSName &qdomain, int zoneId, DNSPacket *pkt_p=nullptr) override;
  51   bool list(const DNSName &target, int domain_id, bool include_disabled=false) override { return false; } // not supported
  52   bool get(DNSResourceRecord &r) override;
  53   void reload() override;
  54   void rediscover(string *status = 0) override;
  55   bool getDomainInfo(const DNSName& domain, DomainInfo &di, bool getSerial=true) override;
  56
  57   // dnssec support
  58   bool doesDNSSEC() override { return d_dnssec; };
  59   bool getAllDomainMetadata(const DNSName& name, std::map<std::string, std::vector<std::string> >& meta) override;
  60   bool getDomainMetadata(const DNSName& name, const std::string& kind, std::vector<std::string>& meta) override;
  61   bool getDomainKeys(const DNSName& name, std::vector<DNSBackend::KeyData>& keys) override;
  62   bool removeDomainKey(const DNSName& name, unsigned int id) override;
  63   bool addDomainKey(const DNSName& name, const KeyData& key, int64_t& id) override;
  64   bool activateDomainKey(const DNSName& name, unsigned int id) override;
  65   bool deactivateDomainKey(const DNSName& name, unsigned int id) override;
  66   bool publishDomainKey(const DNSName& name, unsigned int id) override;
  67   bool unpublishDomainKey(const DNSName& name, unsigned int id) override;
  68
  69 private:
  70   static ReadWriteLock s_state_lock;
  71
  72   void initialize();
  73   string format2str(string format, const Netmask &addr, GeoIPNetmask& gl);
  74   bool d_dnssec;
  75   bool hasDNSSECkey(const DNSName& name);
  76   bool lookup_static(const GeoIPDomain &dom, const DNSName &search, const QType &qtype, const DNSName& qdomain, const Netmask &addr, GeoIPNetmask& gl);
  77   vector<DNSResourceRecord> d_result;
  78   vector<GeoIPInterface> d_files;
  79 };