1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
/*
* This file is part of PowerDNS or dnsdist.
* Copyright -- PowerDNS.COM B.V. and its contributors
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* In addition, for the avoidance of any doubt, permission is granted to
* link this program with OpenSSL and to (re)distribute the binaries
* produced as the result of such linking.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#ifndef PDNS_RESOLVER_HH
#define PDNS_RESOLVER_HH
#include <string>
#include <vector>
#include <sys/types.h>
#include "iputils.hh"
#include <netdb.h>
#include <unistd.h>
#include <sys/time.h>
#include <sys/uio.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#undef res_mkquery
#include "pdnsexception.hh"
#include "dns.hh"
#include "namespaces.hh"
#include "dnsrecords.hh"
#include "dnssecinfra.hh"
#include "tsigverifier.hh"
class ResolverException : public PDNSException
{
public:
ResolverException(const string &reason) : PDNSException(reason){}
};
// make an IPv4 or IPv6 query socket
int makeQuerySocket(const ComboAddress& local, bool udpOrTCP);
//! Resolver class. Can be used synchronously and asynchronously, over IPv4 and over IPv6 (simultaneously)
class Resolver : public boost::noncopyable
{
public:
Resolver();
~Resolver();
typedef vector<DNSResourceRecord> res_t;
//! synchronously resolve domain|type at IP, store result in result, rcode in ret
int resolve(const string &ip, const DNSName &domain, int type, res_t* result, const ComboAddress& local);
int resolve(const string &ip, const DNSName &domain, int type, res_t* result);
//! only send out a resolution request
uint16_t sendResolve(const ComboAddress& remote, const ComboAddress& local, const DNSName &domain, int type, bool dnssecOk=false,
const DNSName& tsigkeyname=DNSName(), const DNSName& tsigalgorithm=DNSName(), const string& tsigsecret="");
uint16_t sendResolve(const ComboAddress& remote, const DNSName &domain, int type, bool dnssecOk=false,
const DNSName& tsigkeyname=DNSName(), const DNSName& tsigalgorithm=DNSName(), const string& tsigsecret="");
//! see if we got a SOA response from our sendResolve
bool tryGetSOASerial(DNSName *theirDomain, uint32_t* theirSerial, uint32_t* theirInception, uint32_t* theirExpire, uint16_t* id);
//! convenience function that calls resolve above
void getSoaSerial(const string &, const DNSName &, uint32_t *);
private:
std::map<std::string, int> locals;
};
class AXFRRetriever : public boost::noncopyable
{
public:
AXFRRetriever(const ComboAddress& remote,
const DNSName& zone,
const TSIGTriplet& tt = TSIGTriplet(),
const ComboAddress* laddr = NULL,
size_t maxReceivedBytes=0);
~AXFRRetriever();
int getChunk(Resolver::res_t &res, vector<DNSRecord>* records=0);
private:
void connect();
int getLength();
void timeoutReadn(uint16_t bytes);
shared_array<char> d_buf;
string d_domain;
int d_sock;
int d_soacount;
ComboAddress d_remote;
TSIGTCPVerifier d_tsigVerifier;
size_t d_receivedBytes;
size_t d_maxReceivedBytes;
TSIGRecordContent d_trc;
};
#endif /* PDNS_RESOLVER_HH */
|
