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| author | Lennart Poettering <lennart@poettering.net> | 2015-12-21 16:23:48 +0100 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2015-12-26 19:09:09 +0100 |
| commit | d3c7e9139c50bec5096925a09b9c1341942c72c4 (patch) | |
| tree | d4854604f037b756151a03b3c3cbb732677a9f43 /src/resolve/dns-type.c | |
| parent | 40667ebe74cc5c42bb38e94af06d89ee46dbe839 (diff) | |
resolved: split out a new dns_type_may_redirect() call
Let's abstract which RRs shall honour CNAMEs, and which ones should not.
Diffstat (limited to 'src/resolve/dns-type.c')
| -rw-r--r-- | src/resolve/dns-type.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/src/resolve/dns-type.c b/src/resolve/dns-type.c index cc52ef9abe..0571d65f0b 100644 --- a/src/resolve/dns-type.c +++ b/src/resolve/dns-type.c @@ -95,6 +95,25 @@ bool dns_class_is_valid_rr(uint16_t class) { return class != DNS_CLASS_ANY; } +bool dns_type_may_redirect(uint16_t type) { + /* The following record types should never be redirected using + * CNAME/DNAME RRs. See + * <https://tools.ietf.org/html/rfc4035#section-2.5>. */ + + if (dns_type_is_pseudo(type)) + return false; + + return !IN_SET(type, + DNS_TYPE_CNAME, + DNS_TYPE_DNAME, + DNS_TYPE_NSEC3, + DNS_TYPE_NSEC, + DNS_TYPE_RRSIG, + DNS_TYPE_NXT, + DNS_TYPE_SIG, + DNS_TYPE_KEY); +} + const char *dns_class_to_string(uint16_t class) { switch (class) { |