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update libunbound

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Riccardo Spagni 2015-05-31 16:36:48 +02:00
parent ce974949e2
commit 6a1190792b
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GPG key ID: 55432DF31CCD4FCD
59 changed files with 4449 additions and 2465 deletions
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69
external/unbound/services/cache/dns.c vendored
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@ -389,6 +389,18 @@ dns_msg_authadd(struct dns_msg* msg, struct regional* region,
return 1;
}
/** add rrset to answer section */
static int
dns_msg_ansadd(struct dns_msg* msg, struct regional* region,
struct ub_packed_rrset_key* rrset, time_t now)
{
if(!(msg->rep->rrsets[msg->rep->rrset_count++] =
packed_rrset_copy_region(rrset, region, now)))
return 0;
msg->rep->an_numrrsets++;
return 1;
}
struct delegpt*
dns_cache_find_delegation(struct module_env* env, uint8_t* qname,
size_t qnamelen, uint16_t qtype, uint16_t qclass,
@ -635,6 +647,58 @@ synth_dname_msg(struct ub_packed_rrset_key* rrset, struct regional* region,
return msg;
}
/** Fill TYPE_ANY response with some data from cache */
static struct dns_msg*
fill_any(struct module_env* env,
uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
struct regional* region)
{
time_t now = *env->now;
struct dns_msg* msg = NULL;
uint16_t lookup[] = {LDNS_RR_TYPE_A, LDNS_RR_TYPE_AAAA,
LDNS_RR_TYPE_MX, LDNS_RR_TYPE_SOA, LDNS_RR_TYPE_NS, 0};
int i, num=5; /* number of RR types to look up */
log_assert(lookup[num] == 0);
for(i=0; i<num; i++) {
/* look up this RR for inclusion in type ANY response */
struct ub_packed_rrset_key* rrset = rrset_cache_lookup(
env->rrset_cache, qname, qnamelen, lookup[i],
qclass, 0, now, 0);
struct packed_rrset_data *d;
if(!rrset)
continue;
/* only if rrset from answer section */
d = (struct packed_rrset_data*)rrset->entry.data;
if(d->trust == rrset_trust_add_noAA ||
d->trust == rrset_trust_auth_noAA ||
d->trust == rrset_trust_add_AA ||
d->trust == rrset_trust_auth_AA) {
lock_rw_unlock(&rrset->entry.lock);
continue;
}
/* create msg if none */
if(!msg) {
msg = dns_msg_create(qname, qnamelen, qtype, qclass,
region, (size_t)(num-i));
if(!msg) {
lock_rw_unlock(&rrset->entry.lock);
return NULL;
}
}
/* add RRset to response */
if(!dns_msg_ansadd(msg, region, rrset, now)) {
lock_rw_unlock(&rrset->entry.lock);
return NULL;
}
lock_rw_unlock(&rrset->entry.lock);
}
return msg;
}
struct dns_msg*
dns_cache_lookup(struct module_env* env,
uint8_t* qname, size_t qnamelen, uint16_t qtype, uint16_t qclass,
@ -747,6 +811,11 @@ dns_cache_lookup(struct module_env* env,
}
}
/* fill common RR types for ANY response to avoid requery */
if(qtype == LDNS_RR_TYPE_ANY) {
return fill_any(env, qname, qnamelen, qtype, qclass, region);
}
return NULL;
}