Kea  2.1.7-git
rrparamregistry.cc
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1 
8 // Copyright (C) 2010-2021 Internet Systems Consortium, Inc. ("ISC")
9 //
10 // This Source Code Form is subject to the terms of the Mozilla Public
11 // License, v. 2.0. If a copy of the MPL was not distributed with this
12 // file, You can obtain one at http://mozilla.org/MPL/2.0/.
13 
14 #include <config.h>
15 
16 #include <cassert>
17 #include <algorithm>
18 #include <cctype>
19 #include <functional>
20 #include <map>
21 #include <string>
22 #include <sstream>
23 #include <utility>
24 
25 #include <stdint.h>
26 
27 #include <boost/shared_ptr.hpp>
28 
29 #include <exceptions/exceptions.h>
30 
31 #include <dns/rrparamregistry.h>
32 #include <dns/rrclass.h>
33 #include <dns/rrtype.h>
34 #include <dns/rdata.h>
35 #include <dns/rdataclass.h>
36 
37 using namespace std;
38 
39 using namespace isc::util;
40 using namespace isc::dns::rdata;
41 
42 namespace isc {
43 namespace dns {
44 
45 namespace {
51 bool
52 CICharLess(char c1, char c2) {
53  return (tolower(static_cast<unsigned char>(c1)) <
54  tolower(static_cast<unsigned char>(c2)));
55 }
56 
57 struct CIStringLess :
58  public binary_function<string, string, bool>
59 {
60  bool operator()(const string& s1, const string& s2) const
61  {
62  return (lexicographical_compare(s1.begin(), s1.end(),
63  s2.begin(), s2.end(), CICharLess));
64  }
65 };
66 
67 struct RRTypeParam {
68  RRTypeParam(const string& code_string, uint16_t code) :
69  code_string_(code_string), code_(code) {}
70  string code_string_;
71  uint16_t code_;
72 
74  static const unsigned int MAX_CODE = 0xffff;
75  static const string& UNKNOWN_PREFIX();
76  static size_t UNKNOWN_PREFIXLEN();
77  static const string& UNKNOWN_MAX();
78  static size_t UNKNOWN_MAXLEN();
79 };
80 
81 typedef boost::shared_ptr<RRTypeParam> RRTypeParamPtr;
82 typedef map<string, RRTypeParamPtr, CIStringLess> StrRRTypeMap;
83 typedef map<uint16_t, RRTypeParamPtr> CodeRRTypeMap;
84 
85 inline const string&
86 RRTypeParam::UNKNOWN_PREFIX() {
87  static const string p("TYPE");
88  return (p);
89 }
90 
91 inline size_t
92 RRTypeParam::UNKNOWN_PREFIXLEN() {
93  static size_t plen = UNKNOWN_PREFIX().size();
94  return (plen);
95 }
96 
97 inline const string&
98 RRTypeParam::UNKNOWN_MAX() {
99  static const string p("TYPE65535");
100  return (p);
101 }
102 
103 inline size_t
104 RRTypeParam::UNKNOWN_MAXLEN() {
105  static size_t plen = UNKNOWN_MAX().size();
106  return (plen);
107 }
108 
109 struct RRClassParam {
110  RRClassParam(const string& code_string, uint16_t code) :
111  code_string_(code_string), code_(code) {}
112  string code_string_;
113  uint16_t code_;
114 
116  static const unsigned int MAX_CODE = 0xffff;
117  static const string& UNKNOWN_PREFIX();
118  static size_t UNKNOWN_PREFIXLEN();
119  static const string& UNKNOWN_MAX();
120  static size_t UNKNOWN_MAXLEN();
121 };
122 
123 typedef boost::shared_ptr<RRClassParam> RRClassParamPtr;
124 typedef map<string, RRClassParamPtr, CIStringLess> StrRRClassMap;
125 typedef map<uint16_t, RRClassParamPtr> CodeRRClassMap;
126 
127 inline const string&
128 RRClassParam::UNKNOWN_PREFIX() {
129  static const string p("CLASS");
130  return (p);
131 }
132 
133 inline size_t
134 RRClassParam::UNKNOWN_PREFIXLEN() {
135  static size_t plen = UNKNOWN_PREFIX().size();
136  return (plen);
137 }
138 
139 inline const string&
140 RRClassParam::UNKNOWN_MAX() {
141  static const string p("CLASS65535");
142  return (p);
143 }
144 
145 inline size_t
146 RRClassParam::UNKNOWN_MAXLEN() {
147  static size_t plen = UNKNOWN_MAX().size();
148  return (plen);
149 }
150 } // end of anonymous namespace
151 
160 typedef pair<RRType, RRClass> RRTypeClass;
161 typedef map<RRTypeClass, RdataFactoryPtr> RdataFactoryMap;
162 typedef map<RRType, RdataFactoryPtr> GenericRdataFactoryMap;
163 
164 template <typename T>
166 public:
167  virtual RdataPtr create(const string& rdata_str) const
168  {
169  return (RdataPtr(new T(rdata_str)));
170  }
171 
172  virtual RdataPtr create(InputBuffer& buffer, size_t rdata_len) const
173  {
174  return (RdataPtr(new T(buffer, rdata_len)));
175  }
176 
177  virtual RdataPtr create(const Rdata& source) const
178  {
179  return (RdataPtr(new T(dynamic_cast<const T&>(source))));
180  }
181 
182  virtual RdataPtr create(MasterLexer& lexer, const Name* origin,
183  MasterLoader::Options options,
184  MasterLoaderCallbacks& callbacks) const
185  {
186  return (RdataPtr(new T(lexer, origin, options, callbacks)));
187  }
188 };
189 
199  StrRRTypeMap str2typemap;
201  CodeRRTypeMap code2typemap;
203  StrRRClassMap str2classmap;
205  CodeRRClassMap code2classmap;
206  RdataFactoryMap rdata_factories;
207  GenericRdataFactoryMap genericrdata_factories;
208 };
209 
210 RRParamRegistry::RRParamRegistry() {
211  impl_ = new RRParamRegistryImpl;
212 
213  // set up parameters for well-known RRs
214  try {
215  // BEGIN_WELL_KNOWN_PARAMS
216  add("A", 1, "IN", 1, RdataFactoryPtr(new RdataFactory<in::A>()));
217  add("NS", 2, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::NS>()));
218  add("CNAME", 5, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::CNAME>()));
219  add("SOA", 6, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::SOA>()));
220  add("PTR", 12, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::PTR>()));
221  add("HINFO", 13, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::HINFO>()));
222  add("MINFO", 14, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::MINFO>()));
223  add("MX", 15, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::MX>()));
224  add("TXT", 16, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::TXT>()));
225  add("RP", 17, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::RP>()));
226  add("AFSDB", 18, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::AFSDB>()));
227  add("AAAA", 28, "IN", 1, RdataFactoryPtr(new RdataFactory<in::AAAA>()));
228  add("SRV", 33, "IN", 1, RdataFactoryPtr(new RdataFactory<in::SRV>()));
229  add("NAPTR", 35, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::NAPTR>()));
230  add("DNAME", 39, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::DNAME>()));
231  add("OPT", 41, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::OPT>()));
232  add("DS", 43, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::DS>()));
233  add("SSHFP", 44, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::SSHFP>()));
234  add("RRSIG", 46, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::RRSIG>()));
235  add("NSEC", 47, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::NSEC>()));
236  add("DNSKEY", 48, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::DNSKEY>()));
237  add("DHCID", 49, "IN", 1, RdataFactoryPtr(new RdataFactory<in::DHCID>()));
238  add("NSEC3", 50, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::NSEC3>()));
239  add("NSEC3PARAM", 51, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::NSEC3PARAM>()));
240  add("TLSA", 52, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::TLSA>()));
241  add("SPF", 99, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::SPF>()));
242  add("TKEY", 249, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::TKEY>()));
243  add("CAA", 257, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::CAA>()));
244  add("DLV", 32769, "IN", 1, RdataFactoryPtr(new RdataFactory<generic::DLV>()));
245  add("A", 1, "CH", 3, RdataFactoryPtr(new RdataFactory<ch::A>()));
246  add("A", 1, "HS", 4, RdataFactoryPtr(new RdataFactory<hs::A>()));
247  add("TSIG", 250, "ANY", 255, RdataFactoryPtr(new RdataFactory<any::TSIG>()));
248  add("NS", 2, RdataFactoryPtr(new RdataFactory<generic::NS>()));
249  add("CNAME", 5, RdataFactoryPtr(new RdataFactory<generic::CNAME>()));
250  add("SOA", 6, RdataFactoryPtr(new RdataFactory<generic::SOA>()));
251  add("PTR", 12, RdataFactoryPtr(new RdataFactory<generic::PTR>()));
252  add("HINFO", 13, RdataFactoryPtr(new RdataFactory<generic::HINFO>()));
253  add("MINFO", 14, RdataFactoryPtr(new RdataFactory<generic::MINFO>()));
254  add("MX", 15, RdataFactoryPtr(new RdataFactory<generic::MX>()));
255  add("TXT", 16, RdataFactoryPtr(new RdataFactory<generic::TXT>()));
256  add("RP", 17, RdataFactoryPtr(new RdataFactory<generic::RP>()));
257  add("AFSDB", 18, RdataFactoryPtr(new RdataFactory<generic::AFSDB>()));
258  add("NAPTR", 35, RdataFactoryPtr(new RdataFactory<generic::NAPTR>()));
259  add("DNAME", 39, RdataFactoryPtr(new RdataFactory<generic::DNAME>()));
260  add("OPT", 41, RdataFactoryPtr(new RdataFactory<generic::OPT>()));
261  add("DS", 43, RdataFactoryPtr(new RdataFactory<generic::DS>()));
262  add("SSHFP", 44, RdataFactoryPtr(new RdataFactory<generic::SSHFP>()));
263  add("RRSIG", 46, RdataFactoryPtr(new RdataFactory<generic::RRSIG>()));
264  add("NSEC", 47, RdataFactoryPtr(new RdataFactory<generic::NSEC>()));
265  add("DNSKEY", 48, RdataFactoryPtr(new RdataFactory<generic::DNSKEY>()));
266  add("NSEC3", 50, RdataFactoryPtr(new RdataFactory<generic::NSEC3>()));
267  add("NSEC3PARAM", 51, RdataFactoryPtr(new RdataFactory<generic::NSEC3PARAM>()));
268  add("TLSA", 52, RdataFactoryPtr(new RdataFactory<generic::TLSA>()));
269  add("SPF", 99, RdataFactoryPtr(new RdataFactory<generic::SPF>()));
270  add("TKEY", 249, RdataFactoryPtr(new RdataFactory<generic::TKEY>()));
271  add("CAA", 257, RdataFactoryPtr(new RdataFactory<generic::CAA>()));
272  add("DLV", 32769, RdataFactoryPtr(new RdataFactory<generic::DLV>()));
273  // Meta and non-implemented RR types
274  addType("IXFR", 251);
275  addType("AXFR", 252);
276  addType("ANY", 255);
277  addType("MD", 3);
278  addType("MF", 4);
279  addType("MB", 7);
280  addType("MG", 8);
281  addType("MR", 9);
282  addType("NXT", 30);
283  addType("A6", 38);
284  addType("MAILA", 254);
285  addType("NULL", 10);
286  addType("WKS", 11);
287  addType("X25", 19);
288  addType("RT", 21);
289  addType("NSAP", 22);
290  addType("NSAP-PTR", 23);
291  addType("SIG", 24);
292  addType("ISDN", 20);
293  addType("KEY", 25);
294  addType("PX", 26);
295  addType("GPOS", 27);
296  addType("LOC", 29);
297  addType("KX", 36);
298  addType("CERT", 37);
299  addType("APL", 42);
300  addType("IPSECKEY", 45);
301  addType("HIP", 55);
302  addType("UNSPEC", 103);
303  addType("NID", 104);
304  addType("L32", 105);
305  addType("L64", 106);
306  addType("LP", 107);
307  addType("MAILB", 253);
308  addType("URI", 256);
309  // Meta classes
310  addClass("NONE", 254);
311  // END_WELL_KNOWN_PARAMS
312  } catch (...) {
313  delete impl_;
314  throw;
315  }
316 }
317 
318 RRParamRegistry::~RRParamRegistry() {
319  delete impl_;
320 }
321 
323 RRParamRegistry::getRegistry() {
324  static RRParamRegistry registry;
325 
326  return (registry);
327 }
328 
329 void
330 RRParamRegistry::add(const std::string& typecode_string, uint16_t typecode,
331  RdataFactoryPtr rdata_factory)
332 {
333  bool type_added = false;
334  try {
335  type_added = addType(typecode_string, typecode);
336  impl_->genericrdata_factories.insert(pair<RRType, RdataFactoryPtr>(
337  RRType(typecode),
338  rdata_factory));
339  } catch (...) {
340  if (type_added) {
341  removeType(typecode);
342  }
343  throw;
344  }
345 }
346 
347 void
348 RRParamRegistry::add(const std::string& typecode_string, uint16_t typecode,
349  const std::string& classcode_string, uint16_t classcode,
350  RdataFactoryPtr rdata_factory)
351 {
352  // Rollback logic on failure is complicated. If adding the new type or
353  // class fails, we should revert to the original state, cleaning up
354  // intermediate state. But we need to make sure that we don't remove
355  // existing data. addType()/addClass() will simply ignore an attempt to
356  // add the same data, so the cleanup should be performed only when we add
357  // something new but we fail in other part of the process.
358  bool type_added = false;
359  bool class_added = false;
360 
361  try {
362  type_added = addType(typecode_string, typecode);
363  class_added = addClass(classcode_string, classcode);
364  impl_->rdata_factories.insert(pair<RRTypeClass, RdataFactoryPtr>(
365  RRTypeClass(RRType(typecode),
366  RRClass(classcode)),
367  rdata_factory));
368  } catch (...) {
369  if (type_added) {
370  removeType(typecode);
371  }
372  if (class_added) {
373  removeClass(classcode);
374  }
375  throw;
376  }
377 }
378 
379 bool
380 RRParamRegistry::removeRdataFactory(const RRType& rrtype,
381  const RRClass& rrclass)
382 {
383  RdataFactoryMap::iterator found =
384  impl_->rdata_factories.find(RRTypeClass(rrtype, rrclass));
385  if (found != impl_->rdata_factories.end()) {
386  impl_->rdata_factories.erase(found);
387  return (true);
388  }
389 
390  return (false);
391 }
392 
393 bool
394 RRParamRegistry::removeRdataFactory(const RRType& rrtype) {
395  GenericRdataFactoryMap::iterator found =
396  impl_->genericrdata_factories.find(rrtype);
397  if (found != impl_->genericrdata_factories.end()) {
398  impl_->genericrdata_factories.erase(found);
399  return (true);
400  }
401 
402  return (false);
403 }
404 
405 namespace {
412 bool CICharEqual(char c1, char c2) {
413  return (tolower(static_cast<unsigned char>(c1)) ==
414  tolower(static_cast<unsigned char>(c2)));
415 }
416 
417 bool
418 caseStringEqual(const string& s1, const string& s2, size_t n) {
419  assert(s1.size() >= n && s2.size() >= n);
420 
421  return (mismatch(s1.begin(), s1.begin() + n, s2.begin(), CICharEqual).first
422  == s1.begin() + n);
423 }
424 
435 template <typename PT, typename MC, typename MS, typename ET>
436 inline bool
437 addParam(const string& code_string, uint16_t code, MC& codemap, MS& stringmap)
438 {
439  // Duplicate type check
440  typename MC::const_iterator found = codemap.find(code);
441  if (found != codemap.end()) {
442  if (found->second->code_string_ != code_string) {
443  isc_throw(ET, "Duplicate RR parameter registration");
444  }
445  return (false);
446  }
447 
448  typedef boost::shared_ptr<PT> ParamPtr;
449  typedef pair<string, ParamPtr> StrParamPair;
450  typedef pair<uint16_t, ParamPtr> CodeParamPair;
451  ParamPtr param = ParamPtr(new PT(code_string, code));
452  try {
453  stringmap.insert(StrParamPair(code_string, param));
454  codemap.insert(CodeParamPair(code, param));
455  } catch (...) {
456  // Rollback to the previous state: not all of the erase operations will
457  // find the entry, but we don't care.
458  stringmap.erase(code_string);
459  codemap.erase(code);
460  throw;
461  }
462 
463  return (true);
464 }
465 
466 template <typename MC, typename MS>
467 inline bool
468 removeParam(uint16_t code, MC& codemap, MS& stringmap) {
469  typename MC::iterator found = codemap.find(code);
470 
471  if (found != codemap.end()) {
472  size_t erased = stringmap.erase(found->second->code_string_);
473  // We must have a corresponding entry of the str2 map exists
474  assert(erased == 1);
475 
476  codemap.erase(found);
477 
478  return (true);
479  }
480 
481  return (false);
482 }
483 
484 template <typename PT, typename MS>
485 inline bool
486 textToCode(const string& code_str, MS& stringmap, uint16_t& ret_code) {
487  typename MS::const_iterator found;
488 
489  found = stringmap.find(code_str);
490  if (found != stringmap.end()) {
491  ret_code = found->second->code_;
492  return (true);
493  }
494 
495  size_t l = code_str.size();
496  if (l > PT::UNKNOWN_PREFIXLEN() &&
497  l <= PT::UNKNOWN_MAXLEN() &&
498  caseStringEqual(code_str, PT::UNKNOWN_PREFIX(),
499  PT::UNKNOWN_PREFIXLEN())) {
500  unsigned int code;
501  istringstream iss(code_str.substr(PT::UNKNOWN_PREFIXLEN(),
502  l - PT::UNKNOWN_PREFIXLEN()));
503  iss >> dec >> code;
504  if (iss.rdstate() == ios::eofbit && code <= PT::MAX_CODE) {
505  ret_code = code;
506  return (true);
507  }
508  }
509 
510  return (false);
511 }
512 
513 template <typename PT, typename MC>
514 inline string
515 codeToText(uint16_t code, MC& codemap) {
516  typename MC::const_iterator found;
517 
518  found = codemap.find(code);
519  if (found != codemap.end()) {
520  return (found->second->code_string_);
521  }
522 
523  ostringstream ss;
524  ss << code;
525  return (PT::UNKNOWN_PREFIX() + ss.str());
526 }
527 }
528 
529 bool
530 RRParamRegistry::addType(const string& type_string, uint16_t code) {
531  return (addParam<RRTypeParam, CodeRRTypeMap, StrRRTypeMap, RRTypeExists>
532  (type_string, code, impl_->code2typemap, impl_->str2typemap));
533 }
534 
535 bool
536 RRParamRegistry::removeType(uint16_t code) {
537  return (removeParam<CodeRRTypeMap, StrRRTypeMap>(code, impl_->code2typemap,
538  impl_->str2typemap));
539 }
540 
541 bool
542 RRParamRegistry::textToTypeCode(const string& type_string,
543  uint16_t& type_code) const
544 {
545  return (textToCode<RRTypeParam, StrRRTypeMap>
546  (type_string, impl_->str2typemap, type_code));
547 }
548 
549 string
550 RRParamRegistry::codeToTypeText(uint16_t code) const {
551  return (codeToText<RRTypeParam, CodeRRTypeMap>(code, impl_->code2typemap));
552 }
553 
554 bool
555 RRParamRegistry::addClass(const string& class_string, uint16_t code) {
556  return (addParam<RRClassParam, CodeRRClassMap, StrRRClassMap, RRClassExists>
557  (class_string, code, impl_->code2classmap, impl_->str2classmap));
558 }
559 
560 bool
561 RRParamRegistry::removeClass(uint16_t code) {
562  return (removeParam<CodeRRClassMap, StrRRClassMap>(code,
563  impl_->code2classmap,
564  impl_->str2classmap));
565 }
566 
567 bool
568 RRParamRegistry::textToClassCode(const string& class_string,
569  uint16_t& class_code) const
570 {
571  return (textToCode<RRClassParam, StrRRClassMap>
572  (class_string, impl_->str2classmap, class_code));
573 }
574 
575 string
576 RRParamRegistry::codeToClassText(uint16_t code) const {
577  return (codeToText<RRClassParam, CodeRRClassMap>(code,
578  impl_->code2classmap));
579 }
580 
581 namespace {
582 inline const AbstractRdataFactory*
583 findRdataFactory(RRParamRegistryImpl* reg_impl,
584  const RRType& rrtype, const RRClass& rrclass)
585 {
586  RdataFactoryMap::const_iterator found;
587  found = reg_impl->rdata_factories.find(RRTypeClass(rrtype, rrclass));
588  if (found != reg_impl->rdata_factories.end()) {
589  return (found->second.get());
590  }
591 
592  GenericRdataFactoryMap::const_iterator genfound =
593  reg_impl->genericrdata_factories.find(rrtype);
594  if (genfound != reg_impl->genericrdata_factories.end()) {
595  return (genfound->second.get());
596  }
597 
598  return (NULL);
599 }
600 }
601 
602 RdataPtr
603 RRParamRegistry::createRdata(const RRType& rrtype, const RRClass& rrclass,
604  const std::string& rdata_string)
605 {
606  // If the text indicates that it's rdata of an "unknown" type (beginning
607  // with '\# n'), parse it that way. (TBD)
608 
609  const AbstractRdataFactory* factory =
610  findRdataFactory(impl_, rrtype, rrclass);
611  if (factory != NULL) {
612  return (factory->create(rdata_string));
613  }
614 
615  return (RdataPtr(new generic::Generic(rdata_string)));
616 }
617 
618 RdataPtr
619 RRParamRegistry::createRdata(const RRType& rrtype, const RRClass& rrclass,
620  InputBuffer& buffer, size_t rdata_len)
621 {
622  const AbstractRdataFactory* factory =
623  findRdataFactory(impl_, rrtype, rrclass);
624  if (factory != NULL) {
625  return (factory->create(buffer, rdata_len));
626  }
627 
628  return (RdataPtr(new generic::Generic(buffer, rdata_len)));
629 }
630 
631 RdataPtr
632 RRParamRegistry::createRdata(const RRType& rrtype, const RRClass& rrclass,
633  const Rdata& source)
634 {
635  const AbstractRdataFactory* factory =
636  findRdataFactory(impl_, rrtype, rrclass);
637  if (factory != NULL) {
638  return (factory->create(source));
639  }
640 
641  return (RdataPtr(new rdata::generic::Generic(
642  dynamic_cast<const generic::Generic&>(source))));
643 }
644 
645 RdataPtr
646 RRParamRegistry::createRdata(const RRType& rrtype, const RRClass& rrclass,
647  MasterLexer& lexer, const Name* name,
648  MasterLoader::Options options,
649  MasterLoaderCallbacks& callbacks)
650 {
651  const AbstractRdataFactory* factory =
652  findRdataFactory(impl_, rrtype, rrclass);
653  if (factory != NULL) {
654  return (factory->create(lexer, name, options, callbacks));
655  }
656 
657  return (RdataPtr(new generic::Generic(lexer, name, options, callbacks)));
658 }
659 }
660 }
The Name class encapsulates DNS names.
Definition: name.h:223
string code_string_
StrRRTypeMap str2typemap
Mappings from RR type codes to textual representations.
virtual RdataPtr create(InputBuffer &buffer, size_t rdata_len) const
Create RDATA from wire-format data.
The RRParamRegistryImpl class is the actual implementation of RRParamRegistry.
The Rdata class is an abstract base class that provides a set of common interfaces to manipulate conc...
Definition: rdata.h:123
RdataPtr createRdata(const RRType &rrtype, const RRClass &rrclass, const std::string &rdata_string)
Create RDATA of a given pair of RR type and class from a string.
Definition: rdata.cc:56
STL namespace.
The generic::Generic class represents generic "unknown" RDATA.
Definition: rdata.h:249
The RRClass class encapsulates DNS resource record classes.
Definition: rrclass.h:98
Options
Options how the parsing should work.
Definition: master_loader.h:39
#define isc_throw(type, stream)
A shortcut macro to insert known values into exception arguments.
The AbstractRdataFactory class is an abstract base class to encapsulate a set of Rdata factory method...
Definition: edns.h:19
GenericRdataFactoryMap genericrdata_factories
The RRParamRegistry class represents a registry of parameters to manipulate DNS resource records (RRs...
boost::shared_ptr< AbstractRdataFactory > RdataFactoryPtr
The RdataFactoryPtr type is a pointer-like type, pointing to an object of some concrete derived class...
Defines the logger used by the top-level component of kea-lfc.
uint16_t code_
pair< RRType, RRClass > RRTypeClass
Note: the element ordering in the type/class pair is intentional.
virtual RdataPtr create(const Rdata &source) const
Create RDATA from another Rdata object of the same type.
virtual RdataPtr create(MasterLexer &lexer, const Name *origin, MasterLoader::Options options, MasterLoaderCallbacks &callbacks) const
Create RDATA using MasterLexer.
The RRType class encapsulates DNS resource record types.
Definition: rrtype.h:106
map< RRType, RdataFactoryPtr > GenericRdataFactoryMap
CodeRRClassMap code2classmap
Mappings from textual representations of RR classes to integer codes.
StrRRClassMap str2classmap
Mappings from RR class codes to textual representations.
The InputBuffer class is a buffer abstraction for manipulating read-only data.
Definition: buffer.h:81
virtual RdataPtr create(const string &rdata_str) const
Create RDATA from a string.
virtual RdataPtr create(const std::string &rdata_str) const =0
Create RDATA from a string.
map< RRTypeClass, RdataFactoryPtr > RdataFactoryMap
CodeRRTypeMap code2typemap
Mappings from textual representations of RR types to integer codes.
Tokenizer for parsing DNS master files.
Definition: master_lexer.h:301
Set of issue callbacks for a loader.
boost::shared_ptr< Rdata > RdataPtr
The RdataPtr type is a pointer-like type, pointing to an object of some concrete derived class of Rda...