[LEDE-DEV] [PATCH] mdnsd: the service is ignoring questions

John Crispin john at phrozen.org
Mon Dec 19 07:58:53 PST 2016


When a question is incoming the service was incorrectly resettig the
query timeout regardless of it being the right service. This causes
the code to never answer the questions it is being asked.

Reported-by: Cristian Morales Vega <cristian at samknows.com>
Signed-off-by: John Crispin <john at phrozen.org>
---
 service.c |   12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)

Hi Cristian

the patch is only runtime tested, could you give it a spin to see if it solves your problem ?

	John

diff --git a/service.c b/service.c
index fe6e5a9..8d514c2 100644
--- a/service.c
+++ b/service.c
@@ -107,7 +107,7 @@ service_add_srv(struct service *s, int ttl)
 
 #define TOUT_LOOKUP	60
 
-static int
+static time_t
 service_timeout(struct service *s)
 {
 	time_t t = monotonic_time();
@@ -115,9 +115,7 @@ service_timeout(struct service *s)
 	if (t - s->t <= TOUT_LOOKUP)
 		return 0;
 
-	s->t = t;
-
-	return 1;
+	return t;
 }
 
 void
@@ -154,8 +152,10 @@ service_reply_single(struct interface *iface, struct service *s, const char *mat
 {
 	const char *host = service_name(s->service);
 	char *service = strstr(host, "._");
+	time_t t = service_timeout(s);
+
 
-	if (!force && (!s->active || !service || !service_timeout(s)))
+	if (!force && (!s->active || !service || !t))
 		return;
 
 	service++;
@@ -163,6 +163,8 @@ service_reply_single(struct interface *iface, struct service *s, const char *mat
 	if (match && strcmp(match, s->service))
 		return;
 
+	s->t = t;
+
 	dns_init_answer();
 	service_add_ptr(service_name(s->service), ttl);
 	dns_send_answer(iface, service);
-- 
1.7.10.4




More information about the Lede-dev mailing list