bool handle_domain(void *k, void *l, void *c)
{
lookup_t *lookup = (lookup_t *) l;
lookup_context_t *context = (lookup_context_t *) c;
struct timeval now;
gettimeofday(&now, NULL);
if (timediff(&now, &lookup->next_lookup) < 0)
{
uint16_t query_flags = 0;
if (!context->cmd_args.norecurse)
{
query_flags |= LDNS_RD;
}
ldns_pkt *packet;
if(LDNS_STATUS_OK != ldns_pkt_query_new_frm_str(&packet, lookup->domain, context->cmd_args.record_types, LDNS_RR_CLASS_IN,
query_flags))
{
abort();
}
ldns_pkt_set_id(packet, lookup->transaction);
uint8_t *buf = NULL;
size_t packet_size = 0;
if(LDNS_STATUS_OK != ldns_pkt2wire(&buf, packet, &packet_size))
{
abort();
}
ldns_pkt_free(packet);
packet = NULL;
sockaddr_in_t *resolver = massdns_get_resolver((size_t) rand(), &context->resolvers);
ssize_t n = -1;
while (n < 0)
{
n = sendto(context->sock, buf, packet_size, 0, (sockaddr_t *) resolver, sizeof(*resolver));
}
free(buf);
long addusec = context->cmd_args.interval_ms * 1000;
addusec += rand() % (addusec / 5); // Avoid congestion by adding some randomness
lookup->next_lookup.tv_usec = (now.tv_usec + addusec) % 1000000;
lookup->next_lookup.tv_sec = now.tv_sec + (now.tv_usec + addusec) / 1000000;
lookup->tries++;
if (lookup->tries == context->cmd_args.resolve_count)
{
hashmapRemove(context->map, lookup->domain);
free(lookup->domain);
free(lookup);
}
}
return true;
}
/** create a query to test */
static ldns_buffer*
make_query(char* nm, int tp)
{
/* with EDNS DO and CDFLAG */
ldns_buffer* b = ldns_buffer_new(512);
ldns_pkt* p;
ldns_status s;
if(!b) {
if(verb) printf("error: out of memory\n");
return NULL;
}
s = ldns_pkt_query_new_frm_str(&p, nm, tp, LDNS_RR_CLASS_IN,
(uint16_t)(LDNS_RD|LDNS_CD));
if(s != LDNS_STATUS_OK) {
if(verb) printf("error: %s\n", ldns_get_errorstr_by_id(s));
ldns_buffer_free(b);
return NULL;
}
if(!p) {
if(verb) printf("error: out of memory\n");
ldns_buffer_free(b);
return NULL;
}
ldns_pkt_set_edns_do(p, 1);
ldns_pkt_set_edns_udp_size(p, 4096);
ldns_pkt_set_id(p, ldns_get_random());
if( (s=ldns_pkt2buffer_wire(b, p)) != LDNS_STATUS_OK) {
if(verb) printf("error: %s\n", ldns_get_errorstr_by_id(s));
ldns_pkt_free(p);
ldns_buffer_free(b);
return NULL;
}
ldns_pkt_free(p);
return b;
}
