f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#pragma once

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

cf0fbc49e67b55f8d346fc94de28c90113505297Thomas Hindoe Paaboel Andersen#include <netinet/in.h>

cf0fbc49e67b55f8d346fc94de28c90113505297Thomas Hindoe Paaboel Andersen

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#include "bitmap.h"

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#include "dns-type.h"

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#include "hashmap.h"

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#include "in-addr-util.h"

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#include "list.h"

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen

a2ba62c719224a4b47751623ca5e8b0333f49721Lennart Poetteringtypedef struct DnsResourceKey DnsResourceKey;

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersentypedef struct DnsResourceRecord DnsResourceRecord;

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersentypedef struct DnsTxtItem DnsTxtItem;

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersenenum {

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen DNS_CLASS_IN = 0x01,

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen DNS_CLASS_ANY = 0xFF,

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen _DNS_CLASS_MAX,

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen _DNS_CLASS_INVALID = -1

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen};

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen

a2ba62c719224a4b47751623ca5e8b0333f49721Lennart Poettering#define DNSKEY_FLAG_ZONE_KEY (UINT16_C(1) << 8)

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#define DNSKEY_FLAG_SEP (UINT16_C(1) << 0)

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen#define MDNS_RR_CACHE_FLUSH (UINT16_C(1) << 15)

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersenenum {

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen DNSSEC_ALGORITHM_RSAMD5 = 1,

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen DNSSEC_ALGORITHM_DH,

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen DNSSEC_ALGORITHM_DSA,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_ECC,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_RSASHA1,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_DSA_NSEC3_SHA1,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_RSASHA256 = 8, /* RFC 5702 */

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_RSASHA512 = 10, /* RFC 5702 */

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_INDIRECT = 252,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_PRIVATEDNS,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_ALGORITHM_PRIVATEOID,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich _DNSSEC_ALGORITHM_MAX_DEFINED

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich};

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovichenum {

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_DIGEST_SHA1 = 1,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DNSSEC_DIGEST_SHA256 = 2,

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich _DNSSEC_DIGEST_MAX_DEFINED

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich};

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovichstruct DnsResourceKey {

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich unsigned n_ref;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich uint16_t class, type;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich char *_name; /* don't access directy, use DNS_RESOURCE_KEY_NAME()! */

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich bool cache_flush:1;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich};

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich#define DNS_RESOURCE_KEY_CONST(c, t, n) \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich ((DnsResourceKey) { \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich .n_ref = (unsigned) -1, \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich .class = c, \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich .type = t, \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich ._name = (char*) n, \

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich })

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovichstruct DnsTxtItem {

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich size_t length;

5bb14c8651b017983bb9cbd1444969c7a1bda14eTom Gundersen LIST_FIELDS(DnsTxtItem, items);

5bb14c8651b017983bb9cbd1444969c7a1bda14eTom Gundersen uint8_t data[];

5bb14c8651b017983bb9cbd1444969c7a1bda14eTom Gundersen};

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovichstruct DnsResourceRecord {

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich unsigned n_ref;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich DnsResourceKey *key;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich uint32_t ttl;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich bool unparseable:1;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich bool wire_format_canonical:1;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich void *wire_format;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich size_t wire_format_size;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich size_t wire_format_rdata_offset;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich union {

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich struct {

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen void *data;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen size_t size;

7c99d940c11e4da1863a218b6b70dd16e65b7518Tom Gundersen } generic;

7c99d940c11e4da1863a218b6b70dd16e65b7518Tom Gundersen

7c99d940c11e4da1863a218b6b70dd16e65b7518Tom Gundersen struct {

7c99d940c11e4da1863a218b6b70dd16e65b7518Tom Gundersen uint16_t priority;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen uint16_t weight;

7c99d940c11e4da1863a218b6b70dd16e65b7518Tom Gundersen uint16_t port;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen char *name;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen } srv;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen struct {

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen char *name;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen } ptr, ns, cname, dname;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen struct {

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen char *cpu;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen char *os;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen } hinfo;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

505f8da7325591defe5f751f328bd26915267602Tom Gundersen DnsTxtItem *items;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen } txt, spf;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

505f8da7325591defe5f751f328bd26915267602Tom Gundersen struct in_addr in_addr;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen } a;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen struct in6_addr in6_addr;

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen } aaaa;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

f0213e3796b4dd66e546e2de4d677db319f9171bTom Gundersen struct {

f0213e3796b4dd66e546e2de4d677db319f9171bTom Gundersen char *mname;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen char *rname;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t serial;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t refresh;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t retry;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t expire;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t minimum;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen } soa;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen struct {

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint16_t priority;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen char *exchange;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen } mx;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

3ac8e5433f20bfb5e12b918252643106a2de52afTom Gundersen struct {

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t version;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t size;

3ac8e5433f20bfb5e12b918252643106a2de52afTom Gundersen uint8_t horiz_pre;

3ac8e5433f20bfb5e12b918252643106a2de52afTom Gundersen uint8_t vert_pre;

3ac8e5433f20bfb5e12b918252643106a2de52afTom Gundersen uint32_t latitude;

3ac8e5433f20bfb5e12b918252643106a2de52afTom Gundersen uint32_t longitude;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint32_t altitude;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen } loc;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen struct {

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint16_t key_tag;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t algorithm;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t digest_type;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen void *digest;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen size_t digest_size;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen } ds;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen /* https://tools.ietf.org/html/rfc4255#section-3.1 */

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen struct {

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t algorithm;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen uint8_t fptype;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen void *fingerprint;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen size_t fingerprint_size;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen } sshfp;

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen /* http://tools.ietf.org/html/rfc4034#section-2.1 */

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint16_t flags;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint8_t protocol;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint8_t algorithm;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen void* key;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen size_t key_size;

09bee74d7a5f266b175baa19892fa84a9da51d7fTom Gundersen } dnskey;

e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen /* http://tools.ietf.org/html/rfc4034#section-3.1 */

9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen struct {

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen uint16_t type_covered;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint8_t algorithm;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen uint8_t labels;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen uint32_t original_ttl;

5347925a59530bd4e6616eb8c8d43a02c3e14c46Tom Gundersen uint32_t expiration;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint32_t inception;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint16_t key_tag;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen char *signer;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen void *signature;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen size_t signature_size;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen } rrsig;

12e0f830f592ec4c6bb49ac7ae1e0e84f74105e3Tom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen /* https://tools.ietf.org/html/rfc4034#section-4.1 */

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen char *next_domain_name;

505f8da7325591defe5f751f328bd26915267602Tom Gundersen Bitmap *types;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen } nsec;

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen struct {

f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen uint8_t algorithm;

uint8_t flags;

uint16_t iterations;

void *salt;

size_t salt_size;

void *next_hashed_name;

size_t next_hashed_name_size;

Bitmap *types;

} nsec3;

};

};

static inline const char* DNS_RESOURCE_KEY_NAME(const DnsResourceKey *key) {

if (_unlikely_(!key))

return NULL;

if (key->_name)

return key->_name;

return (char*) key + sizeof(DnsResourceKey);

}

DnsResourceKey* dns_resource_key_new(uint16_t class, uint16_t type, const char *name);

DnsResourceKey* dns_resource_key_new_redirect(const DnsResourceKey *key, const DnsResourceRecord *cname);

int dns_resource_key_new_append_suffix(DnsResourceKey **ret, DnsResourceKey *key, char *name);

DnsResourceKey* dns_resource_key_new_consume(uint16_t class, uint16_t type, char *name);

DnsResourceKey* dns_resource_key_ref(DnsResourceKey *key);

DnsResourceKey* dns_resource_key_unref(DnsResourceKey *key);

bool dns_resource_key_is_address(const DnsResourceKey *key);

int dns_resource_key_equal(const DnsResourceKey *a, const DnsResourceKey *b);

int dns_resource_key_match_rr(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain);

int dns_resource_key_match_cname(const DnsResourceKey *key, const DnsResourceRecord *rr, const char *search_domain);

int dns_resource_key_to_string(const DnsResourceKey *key, char **ret);

DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceKey*, dns_resource_key_unref);

static inline bool dns_key_is_shared(const DnsResourceKey *key) {

return IN_SET(key->type, DNS_TYPE_PTR);

}

DnsResourceRecord* dns_resource_record_new(DnsResourceKey *key);

DnsResourceRecord* dns_resource_record_new_full(uint16_t class, uint16_t type, const char *name);

DnsResourceRecord* dns_resource_record_ref(DnsResourceRecord *rr);

DnsResourceRecord* dns_resource_record_unref(DnsResourceRecord *rr);

int dns_resource_record_new_reverse(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name);

int dns_resource_record_new_address(DnsResourceRecord **ret, int family, const union in_addr_union *address, const char *name);

int dns_resource_record_equal(const DnsResourceRecord *a, const DnsResourceRecord *b);

int dns_resource_record_to_string(const DnsResourceRecord *rr, char **ret);

DEFINE_TRIVIAL_CLEANUP_FUNC(DnsResourceRecord*, dns_resource_record_unref);

int dns_resource_record_to_wire_format(DnsResourceRecord *rr, bool canonical);

DnsTxtItem *dns_txt_item_free_all(DnsTxtItem *i);

bool dns_txt_item_equal(DnsTxtItem *a, DnsTxtItem *b);

const char *dns_class_to_string(uint16_t type);

int dns_class_from_string(const char *name, uint16_t *class);

extern const struct hash_ops dns_resource_key_hash_ops;

const char* dnssec_algorithm_to_string(int i) _const_;

int dnssec_algorithm_from_string(const char *s) _pure_;

const char *dnssec_digest_to_string(int i) _const_;

int dnssec_digest_from_string(const char *s) _pure_;