int packed_rr_to_string(struct ub_packed_rrset_key* rrset, size_t i,
time_t now, char* dest, size_t dest_len)
{
struct packed_rrset_data* d = (struct packed_rrset_data*)rrset->
entry.data;
uint8_t rr[65535];
size_t rlen = rrset->rk.dname_len + 2 + 2 + 4 + d->rr_len[i];
log_assert(dest_len > 0 && dest);
if(rlen > dest_len) {
dest[0] = 0;
return 0;
}
memmove(rr, rrset->rk.dname, rrset->rk.dname_len);
if(i < d->count)
memmove(rr+rrset->rk.dname_len, &rrset->rk.type, 2);
else sldns_write_uint16(rr+rrset->rk.dname_len, LDNS_RR_TYPE_RRSIG);
memmove(rr+rrset->rk.dname_len+2, &rrset->rk.rrset_class, 2);
sldns_write_uint32(rr+rrset->rk.dname_len+4,
(uint32_t)(d->rr_ttl[i]-now));
memmove(rr+rrset->rk.dname_len+8, d->rr_data[i], d->rr_len[i]);
if(sldns_wire2str_rr_buf(rr, rlen, dest, dest_len) == -1) {
log_info("rrbuf failure %d %s", (int)d->rr_len[i], dest);
dest[0] = 0;
return 0;
}
return 1;
}
/** synthesize a CNAME rrset */
static struct rrset_parse*
synth_cname_rrset(uint8_t** sname, size_t* snamelen, uint8_t* alias,
size_t aliaslen, struct regional* region, struct msg_parse* msg,
struct rrset_parse* rrset, struct rrset_parse* prev,
struct rrset_parse* nx, sldns_buffer* pkt)
{
struct rrset_parse* cn = (struct rrset_parse*)regional_alloc(region,
sizeof(struct rrset_parse));
if(!cn)
return NULL;
memset(cn, 0, sizeof(*cn));
cn->rr_first = (struct rr_parse*)regional_alloc(region,
sizeof(struct rr_parse));
if(!cn->rr_first)
return NULL;
cn->rr_last = cn->rr_first;
/* CNAME from sname to alias */
cn->dname = (uint8_t*)regional_alloc(region, *snamelen);
if(!cn->dname)
return NULL;
dname_pkt_copy(pkt, cn->dname, *sname);
cn->dname_len = *snamelen;
cn->type = LDNS_RR_TYPE_CNAME;
cn->section = rrset->section;
cn->rrset_class = rrset->rrset_class;
cn->rr_count = 1;
cn->size = sizeof(uint16_t) + aliaslen;
cn->hash=pkt_hash_rrset(pkt, cn->dname, cn->type, cn->rrset_class, 0);
/* allocate TTL + rdatalen + uncompressed dname */
memset(cn->rr_first, 0, sizeof(struct rr_parse));
cn->rr_first->outside_packet = 1;
cn->rr_first->ttl_data = (uint8_t*)regional_alloc(region,
sizeof(uint32_t)+sizeof(uint16_t)+aliaslen);
if(!cn->rr_first->ttl_data)
return NULL;
sldns_write_uint32(cn->rr_first->ttl_data, 0); /* TTL = 0 */
sldns_write_uint16(cn->rr_first->ttl_data+4, aliaslen);
memmove(cn->rr_first->ttl_data+6, alias, aliaslen);
cn->rr_first->size = sizeof(uint16_t)+aliaslen;
/* link it in */
cn->rrset_all_next = nx;
if(prev)
prev->rrset_all_next = cn;
else msg->rrset_first = cn;
if(nx == NULL)
msg->rrset_last = cn;
msg->rrset_count ++;
msg->an_rrsets++;
/* it is not inserted in the msg hashtable. */
*sname = cn->rr_first->ttl_data + sizeof(uint32_t)+sizeof(uint16_t);
*snamelen = aliaslen;
return cn;
}