diff options
| author | Lennart Poettering <lennart@poettering.net> | 2014-07-30 11:26:49 +0200 |
|---|---|---|
| committer | Lennart Poettering <lennart@poettering.net> | 2014-07-30 14:05:48 +0200 |
| commit | ddf163393bd93baf39fa7a2c567f6758570cc209 (patch) | |
| tree | 1d6c7ecd5b9119abe36bfb68c6326da9aae3f62e /src/resolve | |
| parent | 9f20a8a376f924c8eb5423cfc1f98644fc1e2d1a (diff) | |
resolved: never cache ANY lookups
Diffstat (limited to 'src/resolve')
| -rw-r--r-- | src/resolve/resolved-dns-cache.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-cache.c b/src/resolve/resolved-dns-cache.c index c97116745..28a375bae 100644 --- a/src/resolve/resolved-dns-cache.c +++ b/src/resolve/resolved-dns-cache.c @@ -270,6 +270,11 @@ static int dns_cache_put_positive(DnsCache *c, DnsResourceRecord *rr, usec_t tim return 0; } + if (rr->key->class == DNS_CLASS_ANY) + return 0; + if (rr->key->type == DNS_TYPE_ANY) + return 0; + /* Entry exists already? Update TTL and timestamp */ existing = dns_cache_get(c, rr); if (existing) { @@ -311,6 +316,11 @@ static int dns_cache_put_negative(DnsCache *c, DnsResourceKey *key, int rcode, u dns_cache_remove(c, key); + if (key->class == DNS_CLASS_ANY) + return 0; + if (key->type == DNS_TYPE_ANY) + return 0; + if (!IN_SET(rcode, DNS_RCODE_SUCCESS, DNS_RCODE_NXDOMAIN)) return 0; @@ -426,6 +436,14 @@ int dns_cache_lookup(DnsCache *c, DnsQuestion *q, int *rcode, DnsAnswer **ret) { for (i = 0; i < q->n_keys; i++) { DnsCacheItem *j; + if (q->keys[i]->type == DNS_TYPE_ANY || + q->keys[i]->class == DNS_CLASS_ANY) { + /* If we have ANY lookups we simply refresh */ + *ret = NULL; + *rcode = 0; + return 0; + } + j = hashmap_get(c->by_key, q->keys[i]); if (!j) { /* If one question cannot be answered we need to refresh */ |