static isc_result_t fetch_nsaddress (struct probe_trans *trans)
{
struct probe_ns *pns;
pns = trans->current_ns;
REQUIRE (pns != NULL);
return (dns_client_startresolve (client, pns->name, dns_rdataclass_in,
dns_rdatatype_a, 0, probe_task, resolve_nsaddress, trans, &trans->resid));
}
static isc_result_t probe_domain (struct probe_trans *trans)
{
isc_result_t result;
size_t domainlen;
isc_buffer_t b;
char buf[4096]; /* XXX ad hoc constant, but should be enough */
char *cp;
REQUIRE (trans != NULL);
REQUIRE (trans->inuse == ISC_FALSE);
REQUIRE (outstanding_probes < MAX_PROBES);
/* Construct domain */
cp = fgets (buf, sizeof (buf), fp);
if (cp == NULL)
return (ISC_R_NOMORE);
if ((cp = strchr (buf, '\n')) != NULL) /* zap NL if any */
*cp = '\0';
trans->domain = isc_mem_strdup (mctx, buf);
if (trans->domain == NULL)
{
fprintf (stderr, "failed to allocate memory for domain: %s", cp);
return (ISC_R_NOMEMORY);
}
/* Start getting NS for the domain */
domainlen = strlen (buf);
isc_buffer_init (&b, buf, domainlen);
isc_buffer_add (&b, domainlen);
dns_fixedname_init (&trans->fixedname);
trans->qname = dns_fixedname_name (&trans->fixedname);
result = dns_name_fromtext (trans->qname, &b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS)
goto cleanup;
result = dns_client_startresolve (client, trans->qname,
dns_rdataclass_in, dns_rdatatype_ns,
0, probe_task, resolve_ns, trans, &trans->resid);
if (result != ISC_R_SUCCESS)
goto cleanup;
trans->inuse = ISC_TRUE;
outstanding_probes++;
return (ISC_R_SUCCESS);
cleanup:
isc_mem_free (mctx, trans->domain);
dns_fixedname_invalidate (&trans->fixedname);
return (result);
}
static isc_result_t
dispatch_query(struct query_trans *trans) {
isc_result_t result;
size_t namelen;
isc_buffer_t b;
char buf[4096]; /* XXX ad hoc constant, but should be enough */
char *cp;
REQUIRE(trans != NULL);
REQUIRE(trans->inuse == ISC_FALSE);
REQUIRE(ISC_LIST_EMPTY(trans->answerlist));
REQUIRE(outstanding_queries < MAX_QUERIES);
/* Construct qname */
cp = fgets(buf, sizeof(buf), fp);
if (cp == NULL)
return (ISC_R_NOMORE);
/* zap NL if any */
if ((cp = strchr(buf, '\n')) != NULL)
*cp = '\0';
namelen = strlen(buf);
isc_buffer_init(&b, buf, namelen);
isc_buffer_add(&b, namelen);
dns_fixedname_init(&trans->fixedname);
trans->qname = dns_fixedname_name(&trans->fixedname);
result = dns_name_fromtext(trans->qname, &b, dns_rootname, 0, NULL);
if (result != ISC_R_SUCCESS)
goto cleanup;
/* Start resolution */
result = dns_client_startresolve(client, trans->qname,
dns_rdataclass_in, trans->type, 0,
query_task, process_answer, trans,
&trans->xid);
if (result != ISC_R_SUCCESS)
goto cleanup;
trans->inuse = ISC_TRUE;
outstanding_queries++;
return (ISC_R_SUCCESS);
cleanup:
dns_fixedname_invalidate(&trans->fixedname);
return (result);
}
