/** print root forwards */
static int
print_root_fwds(SSL* ssl, struct iter_forwards* fwds, uint8_t* root)
{
struct delegpt* dp;
dp = forwards_lookup(fwds, root, LDNS_RR_CLASS_IN);
if(!dp)
return ssl_printf(ssl, "off (using root hints)\n");
/* if dp is returned it must be the root */
log_assert(query_dname_compare(dp->name, root)==0);
return ssl_print_name_dp(ssl, NULL, root, LDNS_RR_CLASS_IN, dp);
}
int print_deleg_lookup(SSL* ssl, struct worker* worker, uint8_t* nm,
size_t nmlen, int ATTR_UNUSED(nmlabs))
{
/* deep links into the iterator module */
struct delegpt* dp;
struct dns_msg* msg;
struct regional* region = worker->scratchpad;
char b[260];
struct query_info qinfo;
struct iter_hints_stub* stub;
regional_free_all(region);
qinfo.qname = nm;
qinfo.qname_len = nmlen;
qinfo.qtype = LDNS_RR_TYPE_A;
qinfo.qclass = LDNS_RR_CLASS_IN;
qinfo.local_alias = NULL;
dname_str(nm, b);
if(!ssl_printf(ssl, "The following name servers are used for lookup "
"of %s\n", b))
return 0;
dp = forwards_lookup(worker->env.fwds, nm, qinfo.qclass);
if(dp) {
if(!ssl_printf(ssl, "forwarding request:\n"))
return 0;
print_dp_main(ssl, dp, NULL);
print_dp_details(ssl, worker, dp);
return 1;
}
while(1) {
dp = dns_cache_find_delegation(&worker->env, nm, nmlen,
qinfo.qtype, qinfo.qclass, region, &msg,
*worker->env.now);
if(!dp) {
return ssl_printf(ssl, "no delegation from "
"cache; goes to configured roots\n");
}
/* go up? */
if(iter_dp_is_useless(&qinfo, BIT_RD, dp)) {
print_dp_main(ssl, dp, msg);
print_dp_details(ssl, worker, dp);
if(!ssl_printf(ssl, "cache delegation was "
"useless (no IP addresses)\n"))
return 0;
if(dname_is_root(nm)) {
/* goes to root config */
return ssl_printf(ssl, "no delegation from "
"cache; goes to configured roots\n");
} else {
/* useless, goes up */
nm = dp->name;
nmlen = dp->namelen;
dname_remove_label(&nm, &nmlen);
dname_str(nm, b);
if(!ssl_printf(ssl, "going up, lookup %s\n", b))
return 0;
continue;
}
}
stub = hints_lookup_stub(worker->env.hints, nm, qinfo.qclass,
dp);
if(stub) {
if(stub->noprime) {
if(!ssl_printf(ssl, "The noprime stub servers "
"are used:\n"))
return 0;
} else {
if(!ssl_printf(ssl, "The stub is primed "
"with servers:\n"))
return 0;
}
print_dp_main(ssl, stub->dp, NULL);
print_dp_details(ssl, worker, stub->dp);
} else {
print_dp_main(ssl, dp, msg);
print_dp_details(ssl, worker, dp);
}
break;
}
return 1;
}
struct delegpt*
forwards_lookup_root(struct iter_forwards* fwd, uint16_t qclass)
{
uint8_t root = 0;
return forwards_lookup(fwd, &root, qclass);
}