int
dns_cache_store(struct module_env* env, struct query_info* msgqinf,
struct reply_info* msgrep, int is_referral, time_t leeway, int pside,
struct regional* region, uint32_t flags)
{
struct reply_info* rep = NULL;
/* alloc, malloc properly (not in region, like msg is) */
rep = reply_info_copy(msgrep, env->alloc, NULL);
if(!rep)
return 0;
/* ttl must be relative ;i.e. 0..86400 not time(0)+86400.
* the env->now is added to message and RRsets in this routine. */
/* the leeway is used to invalidate other rrsets earlier */
if(is_referral) {
/* store rrsets */
struct rrset_ref ref;
size_t i;
for(i=0; i<rep->rrset_count; i++) {
packed_rrset_ttl_add((struct packed_rrset_data*)
rep->rrsets[i]->entry.data, *env->now);
ref.key = rep->rrsets[i];
ref.id = rep->rrsets[i]->id;
/*ignore ret: it was in the cache, ref updated */
/* no leeway for typeNS */
(void)rrset_cache_update(env->rrset_cache, &ref,
env->alloc, *env->now +
((ntohs(ref.key->rk.type)==LDNS_RR_TYPE_NS
&& !pside) ? 0:leeway));
}
free(rep);
return 1;
} else {
/* store msg, and rrsets */
struct query_info qinf;
hashvalue_type h;
qinf = *msgqinf;
qinf.qname = memdup(msgqinf->qname, msgqinf->qname_len);
if(!qinf.qname) {
reply_info_parsedelete(rep, env->alloc);
return 0;
}
/* fixup flags to be sensible for a reply based on the cache */
/* this module means that RA is available. It is an answer QR.
* Not AA from cache. Not CD in cache (depends on client bit). */
rep->flags |= (BIT_RA | BIT_QR);
rep->flags &= ~(BIT_AA | BIT_CD);
h = query_info_hash(&qinf, (uint16_t)flags);
dns_cache_store_msg(env, &qinf, h, rep, leeway, pside, msgrep,
flags, region);
/* qname is used inside query_info_entrysetup, and set to
* NULL. If it has not been used, free it. free(0) is safe. */
free(qinf.qname);
}
return 1;
}
struct dns_msg*
dns_copy_msg(struct dns_msg* from, struct regional* region)
{
struct dns_msg* m = (struct dns_msg*)regional_alloc(region,
sizeof(struct dns_msg));
if(!m)
return NULL;
m->qinfo = from->qinfo;
if(!(m->qinfo.qname = regional_alloc_init(region, from->qinfo.qname,
from->qinfo.qname_len)))
return NULL;
if(!(m->rep = reply_info_copy(from->rep, NULL, region)))
return NULL;
return m;
}
