From 8bf52d3d17d364438191077d0750b8b80b5dc53a Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Wed, 30 Jul 2014 16:30:25 +0200 Subject: resolved: include SOA records in LLMNR replies for non-existing RRs to allow negative caching --- src/resolve/resolved-dns-answer.c | 24 ++++++++++++++++++++++++ 1 file changed, 24 insertions(+) (limited to 'src/resolve/resolved-dns-answer.c') diff --git a/src/resolve/resolved-dns-answer.c b/src/resolve/resolved-dns-answer.c index 6096959355..b6883a3aba 100644 --- a/src/resolve/resolved-dns-answer.c +++ b/src/resolve/resolved-dns-answer.c @@ -97,6 +97,30 @@ int dns_answer_add(DnsAnswer *a, DnsResourceRecord *rr) { return 1; } +int dns_answer_add_soa(DnsAnswer *a, const char *name) { + _cleanup_(dns_resource_record_unrefp) DnsResourceRecord *soa = NULL; + + soa = dns_resource_record_new_full(DNS_CLASS_IN, DNS_TYPE_SOA, name); + if (!soa) + return -ENOMEM; + + soa->soa.mname = strdup(name); + if (!soa->soa.mname) + return -ENOMEM; + + soa->soa.rname = strappend("root.", name); + if (!soa->soa.rname) + return -ENOMEM; + + soa->soa.serial = 1; + soa->soa.refresh = 1; + soa->soa.retry = 1; + soa->soa.expire = 1; + soa->soa.minimum = 1; + + return dns_answer_add(a, soa); +} + int dns_answer_contains(DnsAnswer *a, DnsResourceKey *key) { unsigned i; int r; -- cgit v1.2.3-54-g00ecf