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qdns.h
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qdns.h
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/*
* This file is part of quantum-dns.
*
* (C) 2014-2018 by Sebastian Krahmer, sebastian [dot] krahmer [at] gmail [dot] com
*
* quantum-dns is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* quantum-dns is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with quantum-dns. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef qdns_qdns_h
#define qdns_qdns_h
#include <map>
#include <list>
#include <string>
#include "provider.h"
namespace qdns {
class qdns {
std::string err;
struct {
std::string pkt;
std::string question;
std::string reply;
} client;
typedef enum {
QDNS_MATCH_INVALID = 0,
QDNS_MATCH_EXACT = 0x1000,
QDNS_MATCH_WILD = 0x2000
} match_type;
struct match {
std::string fqdn, name, question, field;
// in network order:
uint16_t type, _class;
uint16_t a_count, rra_count, ad_count;
uint32_t ttl;
std::string rr;
match_type mtype;
match() : fqdn(""), name(""), question(""), field(""),
type(0), _class(0), a_count(0), rra_count(0), ad_count(0),
ttl(0), rr(""), mtype(QDNS_MATCH_INVALID)
{}
};
bool nxdomain, resend;
dns_provider *io{nullptr};
// (qname, qtype) -> match
std::map<std::pair<std::string, uint16_t>, std::list<match *>> exact_matches, wild_matches;
std::map<std::string, int> once;
std::string src;
protected:
int build_error(const std::string &);
public:
qdns() : err(""), client{"", "", ""}, nxdomain(1), resend(0), src("")
{
}
virtual ~qdns()
{
delete io;
}
const char *why()
{
return err.c_str();
}
int init(const std::map<std::string, std::string> &);
int parse_packet(const std::string &, std::string &, std::string &);
int parse_zone(const std::string &);
int loop();
};
} // namespace
#endif