diff options
Diffstat (limited to 'src/resolve/dns-type.c')
| -rw-r--r-- | src/resolve/dns-type.c | 45 |
1 files changed, 44 insertions, 1 deletions
diff --git a/src/resolve/dns-type.c b/src/resolve/dns-type.c index 0571d65f0b..fb8228048d 100644 --- a/src/resolve/dns-type.c +++ b/src/resolve/dns-type.c @@ -77,7 +77,13 @@ bool dns_type_is_valid_query(uint16_t type) { 0, DNS_TYPE_OPT, DNS_TYPE_TSIG, - DNS_TYPE_TKEY); + DNS_TYPE_TKEY, + + /* RRSIG are technically valid as questions, but we refuse doing explicit queries for them, as + * they aren't really payload, but signatures for payload, and cannot be validated on their + * own. After all they are the signatures, and have no signatures of their own validating + * them. */ + DNS_TYPE_RRSIG); } bool dns_type_is_valid_rr(uint16_t type) { @@ -114,6 +120,43 @@ bool dns_type_may_redirect(uint16_t type) { DNS_TYPE_KEY); } +bool dns_type_is_dnssec(uint16_t type) { + return IN_SET(type, + DNS_TYPE_DS, + DNS_TYPE_DNSKEY, + DNS_TYPE_RRSIG, + DNS_TYPE_NSEC, + DNS_TYPE_NSEC3, + DNS_TYPE_NSEC3PARAM); +} + +bool dns_type_is_obsolete(uint16_t type) { + return IN_SET(type, + /* Obsoleted by RFC 973 */ + DNS_TYPE_MD, + DNS_TYPE_MF, + DNS_TYPE_MAILA, + + /* Kinda obsoleted by RFC 2505 */ + DNS_TYPE_MB, + DNS_TYPE_MG, + DNS_TYPE_MR, + DNS_TYPE_MINFO, + DNS_TYPE_MAILB, + + /* RFC1127 kinda obsoleted this by recommending against its use */ + DNS_TYPE_WKS, + + /* Declared historical by RFC 6563 */ + DNS_TYPE_A6, + + /* Obsoleted by DNSSEC-bis */ + DNS_TYPE_NXT, + + /* RFC 1035 removed support for concepts that needed this from RFC 883 */ + DNS_TYPE_NULL); +} + const char *dns_class_to_string(uint16_t class) { switch (class) { |