diff options
| -rw-r--r-- | src/dnsproxy.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/dnsproxy.c b/src/dnsproxy.c index e7123f1c..dc8ab13e 100644 --- a/src/dnsproxy.c +++ b/src/dnsproxy.c @@ -1246,6 +1246,7 @@ static int cache_update(struct server_data *srv, unsigned char *msg, int offset = protocol_offset(srv->protocol); int err, qlen, ttl = 0; uint16_t answers = 0, type = 0, class = 0; + struct domain_hdr *hdr = (void *)(msg + offset); struct domain_question *q; struct cache_entry *entry; struct cache_data *data; @@ -1270,12 +1271,13 @@ static int cache_update(struct server_data *srv, unsigned char *msg, next_refresh = current_time + 30; } - - /* Continue only if response code is 0 (=ok) */ - if (msg[3] & 0x0f) + if (offset < 0) return 0; - if (offset < 0) + DBG("offset %d hdr %p msg %p rcode %d", offset, hdr, msg, hdr->rcode); + + /* Continue only if response code is 0 (=ok) */ + if (hdr->rcode != 0) return 0; rsplen = sizeof(response) - 1; @@ -1303,7 +1305,7 @@ static int cache_update(struct server_data *srv, unsigned char *msg, return -ENOMEM; data->inserted = entry->ipv4->inserted; data->type = type; - data->answers = msg[5]; + data->answers = hdr->ancount; data->timeout = entry->ipv4->timeout; if (srv->protocol == IPPROTO_UDP) cache_offset = 2; |