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Add query ubus call
[project/mdnsd.git]
/
dns.c
diff --git
a/dns.c
b/dns.c
index
961c2d0
..
c5323e5
100644
(file)
--- a/
dns.c
+++ b/
dns.c
@@
-66,7
+66,7
@@
dns_type_string(uint16_t type)
}
void
}
void
-dns_send_question(struct interface *iface, const char *question, int type)
+dns_send_question(struct interface *iface, const char *question, int type
, int unicast
)
{
static struct dns_header h;
static struct dns_question q;
{
static struct dns_header h;
static struct dns_question q;
@@
-86,7
+86,7
@@
dns_send_question(struct interface *iface, const char *question, int type)
int len;
h.questions = cpu_to_be16(1);
int len;
h.questions = cpu_to_be16(1);
- q.class = cpu_to_be16(1);
+ q.class = cpu_to_be16(
((unicast) ? (CLASS_UNICAST) : (0)) |
1);
q.type = cpu_to_be16(type);
len = dn_comp(question, (void *) name_buffer, sizeof(name_buffer), NULL, NULL);
q.type = cpu_to_be16(type);
len = dn_comp(question, (void *) name_buffer, sizeof(name_buffer), NULL, NULL);
@@
-95,10
+95,9
@@
dns_send_question(struct interface *iface, const char *question, int type)
iov[1].iov_len = len;
iov[1].iov_len = len;
+ DBG(1, "Q <- %s %s\n", dns_type_string(type), question);
if (interface_send_packet(iface, iov, ARRAY_SIZE(iov)) < 0)
if (interface_send_packet(iface, iov, ARRAY_SIZE(iov)) < 0)
- fprintf(stderr, "failed to send question\n");
- else
- DBG(1, "Q <- %s %s\n", dns_type_string(type), question);
+ perror("failed to send question :");
}
}
@@
-300,6
+299,9
@@
parse_answer(struct interface *iface, uint8_t *buffer, int len, uint8_t **b, int
return -1;
}
return -1;
}
+ if ((a->class & ~CLASS_FLUSH) != CLASS_IN)
+ return -1;
+
rdata = *b;
if (a->rdlength > *rlen) {
fprintf(stderr, "dropping: bad question\n");
rdata = *b;
if (a->rdlength > *rlen) {
fprintf(stderr, "dropping: bad question\n");
@@
-310,7
+312,7
@@
parse_answer(struct interface *iface, uint8_t *buffer, int len, uint8_t **b, int
*b += a->rdlength;
if (cache)
*b += a->rdlength;
if (cache)
- cache_answer(iface, buffer, len, name, a, rdata);
+ cache_answer(iface, buffer, len, name, a, rdata
, a->class & CLASS_FLUSH
);
return 0;
}
return 0;
}
@@
-320,6
+322,9
@@
parse_question(struct interface *iface, char *name, struct dns_question *q)
{
char *host;
{
char *host;
+ if ((q->class & CLASS_UNICAST) && iface->multicast)
+ iface = iface->peer;
+
DBG(1, "Q -> %s %s\n", dns_type_string(q->type), name);
switch (q->type) {
DBG(1, "Q -> %s %s\n", dns_type_string(q->type), name);
switch (q->type) {
@@
-329,7
+334,7
@@
parse_question(struct interface *iface, char *name, struct dns_question *q)
break;
case TYPE_PTR:
break;
case TYPE_PTR:
- service_announce_services(iface, name);
+ service_announce_services(iface, name
, announce_ttl
);
service_reply(iface, name, announce_ttl);
break;
service_reply(iface, name, announce_ttl);
break;
@@
-339,13
+344,13
@@
parse_question(struct interface *iface, char *name, struct dns_question *q)
if (host)
*host = '\0';
if (!strcmp(mdns_hostname, name))
if (host)
*host = '\0';
if (!strcmp(mdns_hostname, name))
- service_reply_a(iface,
q->type,
announce_ttl);
+ service_reply_a(iface, announce_ttl);
break;
};
}
void
break;
};
}
void
-dns_handle_packet(struct interface *iface,
uint8_t *buffer, int len, int unicast
)
+dns_handle_packet(struct interface *iface,
struct sockaddr *s, uint16_t port, uint8_t *buffer, int len
)
{
struct dns_header *h;
uint8_t *b = buffer;
{
struct dns_header *h;
uint8_t *b = buffer;
@@
-357,6
+362,10
@@
dns_handle_packet(struct interface *iface, uint8_t *buffer, int len, int unicast
return;
}
return;
}
+ if (h->questions && !iface->multicast && port != 5353)
+ // silently drop unicast questions that dont originate from port 5353
+ return;
+
while (h->questions-- > 0) {
char *name = dns_consume_name(buffer, len, &b, &rlen);
struct dns_question *q;
while (h->questions-- > 0) {
char *name = dns_consume_name(buffer, len, &b, &rlen);
struct dns_question *q;