#pragma once

#include <netinet/in.h>

#include "bitmap.h"

#include "dns-type.h"

#include "hashmap.h"

#include "in-addr-util.h"

#include "list.h"

typedef struct DnsResourceKey DnsResourceKey;

typedef struct DnsResourceRecord DnsResourceRecord;

typedef struct DnsTxtItem DnsTxtItem;

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

#define DNSKEY_FLAG_SEP (UINT16_C(1) << 0)

#define MDNS_RR_CACHE_FLUSH (UINT16_C(1) << 15)

enum {

DNSSEC_ALGORITHM_RSAMD5 = 1,

DNSSEC_ALGORITHM_DH,

DNSSEC_ALGORITHM_DSA,

DNSSEC_ALGORITHM_ECC,

DNSSEC_ALGORITHM_RSASHA1,

DNSSEC_ALGORITHM_DSA_NSEC3_SHA1,

DNSSEC_ALGORITHM_RSASHA1_NSEC3_SHA1,

DNSSEC_ALGORITHM_RSASHA256 = 8, /* RFC 5702 */

DNSSEC_ALGORITHM_RSASHA512 = 10, /* RFC 5702 */

DNSSEC_ALGORITHM_ECDSAP256SHA256 = 13, /* RFC 6605 */

DNSSEC_ALGORITHM_ECDSAP384SHA384 = 14, /* RFC 6605 */

DNSSEC_ALGORITHM_INDIRECT = 252,

DNSSEC_ALGORITHM_PRIVATEDNS,

DNSSEC_ALGORITHM_PRIVATEOID,

_DNSSEC_ALGORITHM_MAX_DEFINED

};

enum {

DNSSEC_DIGEST_SHA1 = 1,

DNSSEC_DIGEST_SHA256 = 2,

DNSSEC_DIGEST_SHA384 = 4,

_DNSSEC_DIGEST_MAX_DEFINED

};

struct DnsResourceKey {

unsigned n_ref;

uint16_t class, type;

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

};

#define DNS_RESOURCE_KEY_CONST(c, t, n) \

((DnsResourceKey) { \

.n_ref = (unsigned) -1, \

.class = c, \

.type = t, \

._name = (char*) n, \

})

struct DnsTxtItem {

size_t length;

LIST_FIELDS(DnsTxtItem, items);

uint8_t data[];

};

struct DnsResourceRecord {

unsigned n_ref;

DnsResourceKey *key;

char *to_string;

uint32_t ttl;

usec_t expiry; /* RRSIG signature expiry */

bool unparseable:1;

bool wire_format_canonical:1;

void *wire_format;

size_t wire_format_size;

size_t wire_format_rdata_offset;

union {

struct {

void *data;

size_t size;

} generic, opt;

struct {

uint16_t priority;

uint16_t weight;

uint16_t port;

char *name;

} srv;

struct {

char *name;

} ptr, ns, cname, dname;

struct {

char *cpu;

char *os;

} hinfo;

struct {

DnsTxtItem *items;

} txt, spf;

struct {

struct in_addr in_addr;

} a;

struct {

struct in6_addr in6_addr;

} aaaa;

struct {

char *mname;

char *rname;

uint32_t serial;

uint32_t refresh;

uint32_t retry;

uint32_t expire;

uint32_t minimum;

} soa;

struct {

uint16_t priority;

char *exchange;

} mx;

struct {

uint8_t version;

uint8_t size;

uint8_t horiz_pre;

uint8_t vert_pre;

uint32_t latitude;

uint32_t longitude;

uint32_t altitude;

} loc;

struct {

uint16_t key_tag;

uint8_t algorithm;

uint8_t digest_type;

void *digest;

size_t digest_size;

} ds;

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

struct {

uint8_t algorithm;

uint8_t fptype;

void *fingerprint;

size_t fingerprint_size;

} sshfp;

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

struct {

uint16_t flags;

uint8_t protocol;

uint8_t algorithm;

void* key;

size_t key_size;

} dnskey;

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

struct {

uint16_t type_covered;

uint8_t algorithm;

uint8_t labels;

uint32_t original_ttl;

uint32_t expiration;

uint32_t inception;

uint16_t key_tag;

char *signer;

void *signature;

size_t signature_size;

} rrsig;

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

struct {

char *next_domain_name;

Bitmap *types;

} nsec;

struct {

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, DnsResourceRecord *rr, const char *search_domain);

int dns_resource_key_match_cname_or_dname(const DnsResourceKey *key, const DnsResourceKey *cname, const char *search_domain);

int dns_resource_key_match_soa(const DnsResourceKey *key, const DnsResourceKey *soa);

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);

const char* dns_resource_record_to_string(DnsResourceRecord *rr);

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);

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_;