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
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
* 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_DNSSECINFRA_HH
#define PDNS_DNSSECINFRA_HH
#include "dnsrecords.hh"
#include <string>
#include <vector>
#include <map>
#include "misc.hh"
class UeberBackend;
// rules of the road: Algorithm must be set in 'make' for each KeyEngine, and will NEVER change!
class DNSCryptoKeyEngine
{
public:
explicit DNSCryptoKeyEngine(unsigned int algorithm) : d_algorithm(algorithm) {}
virtual ~DNSCryptoKeyEngine() {};
virtual string getName() const = 0;
typedef std::map<std::string, std::string> stormap_t;
typedef std::vector<std::pair<std::string, std::string > > storvector_t;
virtual void create(unsigned int bits)=0;
virtual storvector_t convertToISCVector() const =0;
std::string convertToISC() const ;
virtual std::string sign(const std::string& msg) const =0;
virtual std::string hash(const std::string& msg) const
{
throw std::runtime_error("hash() function not implemented");
return msg;
}
virtual bool verify(const std::string& msg, const std::string& signature) const =0;
virtual std::string getPubKeyHash()const =0;
virtual std::string getPublicKeyString()const =0;
virtual int getBits() const =0;
virtual unsigned int getAlgorithm() const
{
return d_algorithm;
}
virtual void fromISCMap(DNSKEYRecordContent& drc, stormap_t& stormap)=0;
virtual void fromPEMString(DNSKEYRecordContent& drc, const std::string& raw)
{
throw std::runtime_error("Can't import from PEM string");
}
virtual void fromPublicKeyString(const std::string& content) = 0;
virtual bool checkKey() const
{
return true;
}
static shared_ptr<DNSCryptoKeyEngine> makeFromISCFile(DNSKEYRecordContent& drc, const char* fname);
static shared_ptr<DNSCryptoKeyEngine> makeFromISCString(DNSKEYRecordContent& drc, const std::string& content);
static shared_ptr<DNSCryptoKeyEngine> makeFromPEMString(DNSKEYRecordContent& drc, const std::string& raw);
static shared_ptr<DNSCryptoKeyEngine> makeFromPublicKeyString(unsigned int algorithm, const std::string& raw);
static shared_ptr<DNSCryptoKeyEngine> make(unsigned int algorithm);
static bool isAlgorithmSupported(unsigned int algo);
static bool isDigestSupported(uint8_t digest);
typedef shared_ptr<DNSCryptoKeyEngine> maker_t(unsigned int algorithm);
static void report(unsigned int algorithm, maker_t* maker, bool fallback=false);
static std::pair<unsigned int, unsigned int> testMakers(unsigned int algorithm, maker_t* creator, maker_t* signer, maker_t* verifier);
static vector<pair<uint8_t, string>> listAllAlgosWithBackend();
static bool testAll();
static bool testOne(int algo);
private:
typedef std::map<unsigned int, maker_t*> makers_t;
typedef std::map<unsigned int, vector<maker_t*> > allmakers_t;
static makers_t& getMakers()
{
static makers_t s_makers;
return s_makers;
}
static allmakers_t& getAllMakers()
{
static allmakers_t s_allmakers;
return s_allmakers;
}
protected:
const unsigned int d_algorithm;
};
struct DNSSECPrivateKey
{
uint16_t getTag() const
{
return getDNSKEY().getTag();
}
const shared_ptr<DNSCryptoKeyEngine> getKey() const
{
return d_key;
}
void setKey(const shared_ptr<DNSCryptoKeyEngine> key)
{
d_key = key;
d_algorithm = key->getAlgorithm();
}
DNSKEYRecordContent getDNSKEY() const;
uint16_t d_flags;
uint8_t d_algorithm;
private:
shared_ptr<DNSCryptoKeyEngine> d_key;
};
struct CanonicalCompare: public std::binary_function<string, string, bool>
{
bool operator()(const std::string& a, const std::string& b) {
std::vector<std::string> avect, bvect;
stringtok(avect, a, ".");
stringtok(bvect, b, ".");
reverse(avect.begin(), avect.end());
reverse(bvect.begin(), bvect.end());
return avect < bvect;
}
};
string getMessageForRRSET(const DNSName& qname, const RRSIGRecordContent& rrc, std::vector<std::shared_ptr<DNSRecordContent> >& signRecords, bool processRRSIGLabels = false);
DSRecordContent makeDSFromDNSKey(const DNSName& qname, const DNSKEYRecordContent& drc, uint8_t digest);
class DNSSECKeeper;
uint32_t getStartOfWeek();
string hashQNameWithSalt(const NSEC3PARAMRecordContent& ns3prc, const DNSName& qname);
string hashQNameWithSalt(const std::string& salt, unsigned int iterations, const DNSName& qname);
void incrementHash(std::string& raw);
void decrementHash(std::string& raw);
void addRRSigs(DNSSECKeeper& dk, UeberBackend& db, const std::set<DNSName>& authMap, vector<DNSZoneRecord>& rrs);
void addTSIG(DNSPacketWriter& pw, TSIGRecordContent& trc, const DNSName& tsigkeyname, const string& tsigsecret, const string& tsigprevious, bool timersonly);
bool validateTSIG(const std::string& packet, size_t sigPos, const TSIGTriplet& tt, const TSIGRecordContent& trc, const std::string& previousMAC, const std::string& theirMAC, bool timersOnly, unsigned int dnsHeaderOffset=0);
uint64_t signatureCacheSize(const std::string& str);
#endif
|
