static int
read_rdata_atom(namedb_type *db, uint16_t type, int index, uint32_t domain_count, domain_type **domains, rdata_atom_type *result)
{
uint8_t data[65536];
if (rdata_atom_is_domain(type, index)) {
result->domain = read_domain(db, domain_count, domains);
if (!result->domain)
return 0;
} else {
uint16_t size;
if (fread(&size, sizeof(size), 1, db->fd) != 1)
return 0;
size = ntohs(size);
if (fread(data, sizeof(uint8_t), size, db->fd) != size)
return 0;
result->data = (uint16_t *) region_alloc(
db->region, sizeof(uint16_t) + size);
memcpy(result->data, &size, sizeof(uint16_t));
memcpy((uint8_t *) result->data + sizeof(uint16_t), data, size);
}
return 1;
}
static void
add_rdata_to_recyclebin(namedb_type* db, rr_type* rr)
{
/* add rdatas to recycle bin. */
size_t i;
for(i=0; i<rr->rdata_count; i++)
{
if(!rdata_atom_is_domain(rr->type, i))
region_recycle(db->region, rr->rdatas[i].data,
rdata_atom_size(rr->rdatas[i])
+ sizeof(uint16_t));
}
region_recycle(db->region, rr->rdatas,
sizeof(rdata_atom_type)*rr->rdata_count);
}
size_t
rdata_maximum_wireformat_size(rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas)
{
size_t result = 0;
size_t i;
for (i = 0; i < rdata_count; ++i) {
if (rdata_atom_is_domain(descriptor->type, i)) {
result += domain_dname(rdata_atom_domain(rdatas[i]))->name_size;
} else {
result += rdata_atom_size(rdatas[i]);
}
}
return result;
}
/*
* Compares two rdata arrays.
*
* Returns:
*
* zero if they are equal
* non-zero if not
*
*/
static int
zrdatacmp(uint16_t type, rr_type *a, rr_type *b)
{
int i = 0;
assert(a);
assert(b);
/* One is shorter than another */
if (a->rdata_count != b->rdata_count)
return 1;
/* Compare element by element */
for (i = 0; i < a->rdata_count; ++i) {
if (rdata_atom_is_domain(type, i)) {
if (rdata_atom_domain(a->rdatas[i])
!= rdata_atom_domain(b->rdatas[i]))
{
return 1;
}
} else if(rdata_atom_is_literal_domain(type, i)) {
if (rdata_atom_size(a->rdatas[i])
!= rdata_atom_size(b->rdatas[i]))
return 1;
if (!dname_equal_nocase(rdata_atom_data(a->rdatas[i]),
rdata_atom_data(b->rdatas[i]),
rdata_atom_size(a->rdatas[i])))
return 1;
} else {
if (rdata_atom_size(a->rdatas[i])
!= rdata_atom_size(b->rdatas[i]))
{
return 1;
}
if (memcmp(rdata_atom_data(a->rdatas[i]),
rdata_atom_data(b->rdatas[i]),
rdata_atom_size(a->rdatas[i])) != 0)
{
return 1;
}
}
}
/* Otherwise they are equal */
return 0;
}
static int
rdatas_equal(rdata_atom_type *a, rdata_atom_type *b, int num, uint16_t type)
{
int k;
for(k = 0; k < num; k++)
{
if(rdata_atom_is_domain(type, k)) {
if(dname_compare(domain_dname(a[k].domain),
domain_dname(b[k].domain))!=0)
return 0;
} else {
/* check length */
if(a[k].data[0] != b[k].data[0])
return 0;
/* check data */
if(memcmp(a[k].data+1, b[k].data+1, a[k].data[0])!=0)
return 0;
}
}
return 1;
}
int
rdata_atoms_to_unknown_string(buffer_type *output,
rrtype_descriptor_type *descriptor,
size_t rdata_count,
rdata_atom_type *rdatas)
{
size_t i;
size_t size =
rdata_maximum_wireformat_size(descriptor, rdata_count, rdatas);
buffer_printf(output, " \\# %lu ", (unsigned long) size);
for (i = 0; i < rdata_count; ++i) {
if (rdata_atom_is_domain(descriptor->type, i)) {
const dname_type *dname =
domain_dname(rdata_atom_domain(rdatas[i]));
hex_to_string(
output, dname_name(dname), dname->name_size);
} else {
hex_to_string(output, rdata_atom_data(rdatas[i]),
rdata_atom_size(rdatas[i]));
}
}
return 1;
}
void
parse_unknown_rdata(uint16_t type, uint16_t *wireformat)
{
buffer_type packet;
uint16_t size;
ssize_t rdata_count;
ssize_t i;
rdata_atom_type *rdatas;
if (wireformat) {
size = *wireformat;
} else {
return;
}
buffer_create_from(&packet, wireformat + 1, *wireformat);
rdata_count = rdata_wireformat_to_rdata_atoms(parser->region,
parser->db->domains,
type,
size,
&packet,
&rdatas);
if (rdata_count == -1) {
zc_error_prev_line("bad unknown RDATA");
return;
}
for (i = 0; i < rdata_count; ++i) {
if (rdata_atom_is_domain(type, i)) {
zadd_rdata_domain(rdatas[i].domain);
} else {
zadd_rdata_wireformat(rdatas[i].data);
}
}
region_recycle(parser->region, rdatas,
rdata_count*sizeof(rdata_atom_type));
}