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-rw-r--r--src/resolve/resolved-bus.c2
-rw-r--r--src/resolve/resolved-dns-cache.c25
2 files changed, 24 insertions, 3 deletions
diff --git a/src/resolve/resolved-bus.c b/src/resolve/resolved-bus.c
index 19db781ac4..bf1b7c8ab4 100644
--- a/src/resolve/resolved-bus.c
+++ b/src/resolve/resolved-bus.c
@@ -220,8 +220,6 @@ static void bus_method_resolve_hostname_complete(DnsQuery *q) {
added++;
}
- // what about the cache?
-
/* If we didn't find anything, then let's restart the
* query, this time with the cname */
if (added <= 0) {
diff --git a/src/resolve/resolved-dns-cache.c b/src/resolve/resolved-dns-cache.c
index 478ad29bbf..93b98f3727 100644
--- a/src/resolve/resolved-dns-cache.c
+++ b/src/resolve/resolved-dns-cache.c
@@ -493,6 +493,29 @@ fail:
return r;
}
+static DnsCacheItem *dns_cache_get_by_key_follow_cname(DnsCache *c, DnsResourceKey *k) {
+ _cleanup_(dns_resource_key_unrefp) DnsResourceKey *cname_key = NULL;
+ DnsCacheItem *i, *j;
+
+ assert(c);
+ assert(k);
+
+ i = hashmap_get(c->by_key, k);
+ if (i || k->type == DNS_TYPE_CNAME)
+ return i;
+
+ /* check if we have a CNAME record instead */
+ cname_key = dns_resource_key_new_cname(k);
+ if (!cname_key)
+ return NULL;
+
+ j = hashmap_get(c->by_key, cname_key);
+ if (j)
+ return j;
+
+ return i;
+}
+
int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **ret) {
_cleanup_(dns_answer_unrefp) DnsAnswer *answer = NULL;
unsigned n = 0;
@@ -522,7 +545,7 @@ int dns_cache_lookup(DnsCache *c, DnsResourceKey *key, int *rcode, DnsAnswer **r
return 0;
}
- first = hashmap_get(c->by_key, key);
+ first = dns_cache_get_by_key_follow_cname(c, key);
if (!first) {
/* If one question cannot be answered we need to refresh */