From: Rafał Miłecki <ra...@milecki.pl>
We should check if queried name starts with a _ to see if it is about a
specific service + domain.
Fixes: 70c66fbbcde86 ("Fix sending replies to PTR questions")
Reported-by: Cristian Morales Vega <crist...@samknows.com>
Signed-off-by: Rafał Miłecki <ra...@milecki.pl>
---
dns.c | 21 ++++++++++++---------
1 file changed, 12 insertions(+), 9 deletions(-)
diff --git a/dns.c b/dns.c
index bccaa29..aadfdd8 100644
--- a/dns.c
+++ b/dns.c
@@ -378,15 +378,18 @@ parse_question(struct interface *iface, struct sockaddr
*from, char *name, struc
dns_reply_a(iface, to, announce_ttl);
service_announce_services(iface, to, announce_ttl);
} else {
- /* First dot separates instance name from the rest */
- char *dot = strchr(name, '.');
- /* Length of queried instance */
- size_t len = dot ? dot - name : 0;
-
- /* Make sure it's query for the instance name we use */
- if (len && len == strlen(umdns_host_label) &&
- !strncmp(name, umdns_host_label, len))
- service_reply(iface, to, NULL, dot + 1,
announce_ttl);
+ if (name[0] == '_') {
+ service_reply(iface, to, NULL, name,
announce_ttl);
+ } else {
+ /* First dot separates instance name from the
rest */
+ char *dot = strchr(name, '.');
+
+ if (dot) {
+ *dot = '\0';
+ service_reply(iface, to, name, dot + 1,
announce_ttl);
+ *dot = '.';
+ }
+ }
}
break;
--
2.11.0
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