diff options
Diffstat (limited to 'source/nameservreply.c')
| -rw-r--r-- | source/nameservreply.c | 32 |
1 files changed, 20 insertions, 12 deletions
diff --git a/source/nameservreply.c b/source/nameservreply.c index c901059f9b6..6585a022611 100644 --- a/source/nameservreply.c +++ b/source/nameservreply.c @@ -569,23 +569,31 @@ void reply_name_query(struct packet_struct *p) /* look up the name in the cache */ n = find_name_search(&d, question, FIND_LOCAL, p->ip); + /* check for a previous DNS lookup */ + if (!n && (n = find_name_search(&d, question, FIND_WINS, p->ip))) { + if (n->source != DNS && n->source != DNSFAIL) { + n = NULL; + } else { + DEBUG(5,("Found DNS cache entry %s\n", namestr(&n->name))); + } + } + /* it is a name that already failed DNS lookup or it's expired */ if (n && (n->source == DNSFAIL || - (n->death_time && n->death_time < p->timestamp))) - { - success = False; + (n->death_time && n->death_time < p->timestamp))) { + DEBUG(5,("expired name %s\n", namestr(&n->name))); + success = False; } + /* do we want to do dns lookups? */ - /* XXXX this DELAYS nmbd while it does a search. lp_dns_proxy() - can be switched off, to ensure that the blocking doesn't occur. - a better solution would be to fork, but this will require a - mechanism to carry on processing after the query is resolved - (similar to the netbios queue). - */ - if (success && !n && (lp_dns_proxy() || !bcast)) - { - n = dns_name_search(question, p->timestamp); + if (success && !n && (lp_dns_proxy() || !bcast)) { + BOOL dns_type = (name_type == 0x20 || name_type == 0); + if (dns_type && wins_subnet) { + /* add it to the dns name query queue */ + if (queue_dns_query(p, question, &n)) + return; + } } } |