diff options
Diffstat (limited to 'src/resolve/dns-type.h')
| -rw-r--r-- | src/resolve/dns-type.h | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/src/resolve/dns-type.h b/src/resolve/dns-type.h new file mode 100644 index 0000000..c6be190 --- /dev/null +++ b/src/resolve/dns-type.h @@ -0,0 +1,162 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "macro.h" + +/* DNS record types, taken from + * http://www.iana.org/assignments/dns-parameters/dns-parameters.xhtml. + */ +enum { + /* 0 is reserved */ + DNS_TYPE_A = 0x01, + DNS_TYPE_NS, + DNS_TYPE_MD, + DNS_TYPE_MF, + DNS_TYPE_CNAME, + DNS_TYPE_SOA, + DNS_TYPE_MB, + DNS_TYPE_MG, + DNS_TYPE_MR, + DNS_TYPE_NULL, + DNS_TYPE_WKS, + DNS_TYPE_PTR, + DNS_TYPE_HINFO, + DNS_TYPE_MINFO, + DNS_TYPE_MX, + DNS_TYPE_TXT, + DNS_TYPE_RP, + DNS_TYPE_AFSDB, + DNS_TYPE_X25, + DNS_TYPE_ISDN, + DNS_TYPE_RT, + DNS_TYPE_NSAP, + DNS_TYPE_NSAP_PTR, + DNS_TYPE_SIG, + DNS_TYPE_KEY, + DNS_TYPE_PX, + DNS_TYPE_GPOS, + DNS_TYPE_AAAA, + DNS_TYPE_LOC, + DNS_TYPE_NXT, + DNS_TYPE_EID, + DNS_TYPE_NIMLOC, + DNS_TYPE_SRV, + DNS_TYPE_ATMA, + DNS_TYPE_NAPTR, + DNS_TYPE_KX, + DNS_TYPE_CERT, + DNS_TYPE_A6, + DNS_TYPE_DNAME, + DNS_TYPE_SINK, + DNS_TYPE_OPT, /* EDNS0 option */ + DNS_TYPE_APL, + DNS_TYPE_DS, + DNS_TYPE_SSHFP, + DNS_TYPE_IPSECKEY, + DNS_TYPE_RRSIG, + DNS_TYPE_NSEC, + DNS_TYPE_DNSKEY, + DNS_TYPE_DHCID, + DNS_TYPE_NSEC3, + DNS_TYPE_NSEC3PARAM, + DNS_TYPE_TLSA, + DNS_TYPE_SMIMEA, /* RFC 8162 */ + /* 0x36 (54) is not assigned */ + DNS_TYPE_HIP = 0x37, + DNS_TYPE_NINFO, + DNS_TYPE_RKEY, + DNS_TYPE_TALINK, + DNS_TYPE_CDS, + DNS_TYPE_CDNSKEY, + DNS_TYPE_OPENPGPKEY, + DNS_TYPE_CSYNC, + DNS_TYPE_ZONEMD, + DNS_TYPE_SVCB, /* RFC 9460 */ + DNS_TYPE_HTTPS, /* RFC 9460 */ + /* 0x42…0x62 (66…98) are not assigned */ + DNS_TYPE_SPF = 0x63, + DNS_TYPE_UINFO, + DNS_TYPE_UID, + DNS_TYPE_GID, + DNS_TYPE_UNSPEC, + DNS_TYPE_NID, + DNS_TYPE_L32, + DNS_TYPE_L64, + DNS_TYPE_LP, + DNS_TYPE_EUI48, + DNS_TYPE_EUI64, + /* 0x6e…0xf8 (110…248) are not assigned */ + DNS_TYPE_TKEY = 0xF9, + DNS_TYPE_TSIG, + DNS_TYPE_IXFR, + DNS_TYPE_AXFR, + DNS_TYPE_MAILB, + DNS_TYPE_MAILA, + DNS_TYPE_ANY, + DNS_TYPE_URI, + DNS_TYPE_CAA, + DNS_TYPE_AVC, + DNS_TYPE_DOA, + DNS_TYPE_AMTRELAY, + DNS_TYPE_RESINFO, + /* 0x106…0x7fff (262…32767) are not assigned */ + DNS_TYPE_TA = 0x8000, + DNS_TYPE_DLV, + /* 32770…65279 are not assigned */ + /* 65280…65534 are for private use */ + /* 65535 is reserved */ + _DNS_TYPE_MAX, + _DNS_TYPE_INVALID = -EINVAL, +}; + +assert_cc(DNS_TYPE_SMIMEA == 53); +assert_cc(DNS_TYPE_HTTPS == 65); +assert_cc(DNS_TYPE_EUI64 == 109); +assert_cc(DNS_TYPE_RESINFO == 261); +assert_cc(DNS_TYPE_ANY == 255); + +/* DNS record classes, see RFC 1035 */ +enum { + DNS_CLASS_IN = 0x01, + DNS_CLASS_ANY = 0xFF, + + _DNS_CLASS_MAX, + _DNS_CLASS_INVALID = -EINVAL, +}; + +#define _DNS_CLASS_STRING_MAX (sizeof "CLASS" + DECIMAL_STR_MAX(uint16_t)) +#define _DNS_TYPE_STRING_MAX (sizeof "CLASS" + DECIMAL_STR_MAX(uint16_t)) + +bool dns_type_is_pseudo(uint16_t type); +bool dns_type_is_valid_query(uint16_t type); +bool dns_type_is_valid_rr(uint16_t type); +bool dns_type_may_redirect(uint16_t type); +bool dns_type_is_dnssec(uint16_t type); +bool dns_type_is_obsolete(uint16_t type); +bool dns_type_may_wildcard(uint16_t type); +bool dns_type_apex_only(uint16_t type); +bool dns_type_needs_authentication(uint16_t type); +bool dns_type_is_zone_transer(uint16_t type); +int dns_type_to_af(uint16_t type); + +bool dns_class_is_pseudo(uint16_t class); +bool dns_class_is_valid_rr(uint16_t class); + +/* TYPE?? follows http://tools.ietf.org/html/rfc3597#section-5 */ +const char *dns_type_to_string(int type); +int dns_type_from_string(const char *s); + +const char *dns_class_to_string(uint16_t class); +int dns_class_from_string(const char *name); + +/* https://tools.ietf.org/html/draft-ietf-dane-protocol-23#section-7.2 */ +const char *tlsa_cert_usage_to_string(uint8_t cert_usage); + +/* https://tools.ietf.org/html/draft-ietf-dane-protocol-23#section-7.3 */ +const char *tlsa_selector_to_string(uint8_t selector); + +/* https://tools.ietf.org/html/draft-ietf-dane-protocol-23#section-7.4 */ +const char *tlsa_matching_type_to_string(uint8_t selector); + +/* https://tools.ietf.org/html/rfc6844#section-5.1 */ +#define CAA_FLAG_CRITICAL (1u << 7) |