/** print one line with udb RR */
static void
print_udb_rr(uint8_t* name, udb_ptr* urr)
{
buffer_type buffer;
region_type* region = region_create(xalloc, free);
region_type* tmpregion = region_create(xalloc, free);
buffer_type* tmpbuffer = buffer_create(region, MAX_RDLENGTH);
rr_type rr;
ssize_t c;
domain_table_type* owners;
owners = domain_table_create(region);
rr.owner = domain_table_insert(owners, dname_make(region, name, 0));
/* to RR */
rr.type = RR(urr)->type;
rr.klass = RR(urr)->klass;
rr.ttl = RR(urr)->ttl;
buffer_create_from(&buffer, RR(urr)->wire, RR(urr)->len);
c = rdata_wireformat_to_rdata_atoms(region, owners, RR(urr)->type,
RR(urr)->len, &buffer, &rr.rdatas);
if(c == -1) {
printf("cannot parse wireformat\n");
region_destroy(region);
return;
}
rr.rdata_count = c;
print_rr(stdout, NULL, &rr, tmpregion, tmpbuffer);
region_destroy(region);
region_destroy(tmpregion);
}
rr_type *
packet_read_rr(region_type *region, domain_table_type *owners,
buffer_type *packet, int question_section)
{
const dname_type *owner;
uint16_t rdlength;
ssize_t rdata_count;
rdata_atom_type *rdatas;
rr_type *result = (rr_type *) region_alloc(region, sizeof(rr_type));
owner = dname_make_from_packet(region, packet, 1, 1);
if (!owner || !buffer_available(packet, 2*sizeof(uint16_t))) {
return NULL;
}
result->owner = domain_table_insert(owners, owner);
result->type = buffer_read_u16(packet);
result->klass = buffer_read_u16(packet);
if (question_section) {
result->ttl = 0;
result->rdata_count = 0;
result->rdatas = NULL;
return result;
} else if (!buffer_available(packet, sizeof(uint32_t) + sizeof(uint16_t))) {
return NULL;
}
result->ttl = buffer_read_u32(packet);
rdlength = buffer_read_u16(packet);
if (!buffer_available(packet, rdlength)) {
return NULL;
}
rdata_count = rdata_wireformat_to_rdata_atoms(
region, owners, result->type, rdlength, packet, &rdatas);
if (rdata_count == -1) {
return NULL;
}
result->rdata_count = rdata_count;
result->rdatas = rdatas;
return result;
}
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));
}
static int
add_RR(namedb_type* db, const dname_type* dname,
uint16_t type, uint16_t klass, uint32_t ttl,
buffer_type* packet, size_t rdatalen, zone_type *zone,
int is_axfr)
{
domain_type* domain;
rrset_type* rrset;
rdata_atom_type *rdatas;
rr_type *rrs_old;
ssize_t rdata_num;
int rrnum;
domain = domain_table_find(db->domains, dname);
if(!domain) {
/* create the domain */
domain = domain_table_insert(db->domains, dname);
}
rrset = domain_find_rrset(domain, zone, type);
if(!rrset) {
/* create the rrset */
rrset = region_alloc(db->region, sizeof(rrset_type));
if(!rrset) {
log_msg(LOG_ERR, "out of memory, %s:%d", __FILE__, __LINE__);
exit(1);
}
rrset->zone = zone;
rrset->rrs = 0;
rrset->rr_count = 0;
domain_add_rrset(domain, rrset);
}
/* dnames in rdata are normalized, conform RFC 4035,
* Section 6.2
*/
rdata_num = rdata_wireformat_to_rdata_atoms(
db->region, db->domains, type, rdatalen, packet, &rdatas);
if(rdata_num == -1) {
log_msg(LOG_ERR, "diff: bad rdata for %s",
dname_to_string(dname,0));
return 0;
}
rrnum = find_rr_num(rrset, type, klass, rdatas, rdata_num);
if(rrnum != -1) {
DEBUG(DEBUG_XFRD, 2, (LOG_ERR, "diff: RR <%s, %s> already exists",
dname_to_string(dname,0), rrtype_to_string(type)));
/* ignore already existing RR: lenient accepting of messages */
return 1;
}
/* re-alloc the rrs and add the new */
rrs_old = rrset->rrs;
rrset->rrs = region_alloc(db->region,
(rrset->rr_count+1) * sizeof(rr_type));
if(!rrset->rrs) {
log_msg(LOG_ERR, "out of memory, %s:%d", __FILE__, __LINE__);
exit(1);
}
if(rrs_old)
memcpy(rrset->rrs, rrs_old, rrset->rr_count * sizeof(rr_type));
region_recycle(db->region, rrs_old, sizeof(rr_type) * rrset->rr_count);
rrset->rr_count ++;
rrset->rrs[rrset->rr_count - 1].owner = domain;
rrset->rrs[rrset->rr_count - 1].rdatas = rdatas;
rrset->rrs[rrset->rr_count - 1].ttl = ttl;
rrset->rrs[rrset->rr_count - 1].type = type;
rrset->rrs[rrset->rr_count - 1].klass = klass;
rrset->rrs[rrset->rr_count - 1].rdata_count = rdata_num;
/* see if it is a SOA */
if(domain == zone->apex) {
if(type == TYPE_SOA) {
uint32_t soa_minimum;
zone->soa_rrset = rrset;
zone->updated = 1;
/* BUG #103 tweaked SOA ttl value */
if(zone->soa_nx_rrset == 0) {
zone->soa_nx_rrset = region_alloc(db->region,
sizeof(rrset_type));
if(!zone->soa_nx_rrset) {
log_msg(LOG_ERR, "out of memory, %s:%d",
__FILE__, __LINE__);
exit(1);
}
zone->soa_nx_rrset->rr_count = 1;
zone->soa_nx_rrset->next = 0;
zone->soa_nx_rrset->zone = zone;
zone->soa_nx_rrset->rrs = region_alloc(db->region,
sizeof(rr_type));
if(!zone->soa_nx_rrset->rrs) {
log_msg(LOG_ERR, "out of memory, %s:%d",
__FILE__, __LINE__);
exit(1);
}
}
memcpy(zone->soa_nx_rrset->rrs, rrset->rrs, sizeof(rr_type));
memcpy(&soa_minimum, rdata_atom_data(rrset->rrs->rdatas[6]),
rdata_atom_size(rrset->rrs->rdatas[6]));
if (rrset->rrs->ttl > ntohl(soa_minimum)) {
rrset->zone->soa_nx_rrset->rrs[0].ttl = ntohl(soa_minimum);
}
domain->has_SOA = 1;
}
if(type == TYPE_NS) {
zone->ns_rrset = rrset;
}
if(type == TYPE_RRSIG) {
int i;
for (i = 0; i < rrset->rr_count; ++i) {
if (rr_rrsig_type_covered(&rrset->rrs[i]) == TYPE_DNSKEY) {
zone->is_secure = 1;
break;
}
}
}
}
#ifdef NSEC3
#ifndef FULL_PREHASH
if ((type == TYPE_NSEC3) &&
(rrset->rr_count == 1)) {
/* NSEC3 RRset just added */
if (0 != namedb_add_nsec3_domain(db, domain, zone))
return 0;
}
if (is_axfr == 0) {
struct domain *parent = domain;
do {
if (0 != namedb_add_nsec3_mod_domain(db, parent))
return 0;
parent = parent->parent;
} while (parent != zone->apex->parent);
}
#else
(void)is_axfr;
#endif /* !FULL_PREHASH */
#endif /* NSEC3 */
return 1;
}
static int
delete_RR(namedb_type* db, const dname_type* dname,
uint16_t type, uint16_t klass,
domain_type* prevdomain,
buffer_type* packet, size_t rdatalen, zone_type *zone,
region_type* temp_region, int is_axfr)
{
domain_type *domain;
rrset_type *rrset;
domain = domain_table_find(db->domains, dname);
if(!domain) {
log_msg(LOG_WARNING, "diff: domain %s does not exist",
dname_to_string(dname,0));
buffer_skip(packet, rdatalen);
return 1; /* not fatal error */
}
rrset = domain_find_rrset(domain, zone, type);
if(!rrset) {
log_msg(LOG_WARNING, "diff: rrset %s does not exist",
dname_to_string(dname,0));
buffer_skip(packet, rdatalen);
return 1; /* not fatal error */
} else {
/* find the RR in the rrset */
domain_table_type *temptable;
rdata_atom_type *rdatas;
ssize_t rdata_num;
int rrnum;
temptable = domain_table_create(temp_region);
/* This will ensure that the dnames in rdata are
* normalized, conform RFC 4035, section 6.2
*/
rdata_num = rdata_wireformat_to_rdata_atoms(
temp_region, temptable, type, rdatalen, packet, &rdatas);
if(rdata_num == -1) {
log_msg(LOG_ERR, "diff: bad rdata for %s",
dname_to_string(dname,0));
return 0;
}
rrnum = find_rr_num(rrset, type, klass, rdatas, rdata_num);
if(rrnum == -1) {
log_msg(LOG_WARNING, "diff: RR <%s, %s> does not exist",
dname_to_string(dname,0), rrtype_to_string(type));
return 1; /* not fatal error */
}
#ifdef NSEC3
#ifndef FULL_PREHASH
if (is_axfr == 0) {
struct domain *parent = domain;
do {
if (0 != namedb_add_nsec3_mod_domain(db,
parent)) {
return 0;
}
parent = parent->parent;
} while (parent != zone->apex->parent);
}
#else
(void)is_axfr;
#endif /* !FULL_PREHASH */
#endif /* NSEC3 */
if(rrset->rr_count == 1) {
/* delete entire rrset */
domain = rrset_delete(db, domain, rrset);
if (domain && domain != prevdomain && !domain->nextdiff) {
/* this domain is not yet in the diff chain */
prevdomain->nextdiff = domain;
}
} else {
/* swap out the bad RR and decrease the count */
rr_type* rrs_orig = rrset->rrs;
add_rdata_to_recyclebin(db, &rrset->rrs[rrnum]);
if(rrnum < rrset->rr_count-1)
rrset->rrs[rrnum] = rrset->rrs[rrset->rr_count-1];
memset(&rrset->rrs[rrset->rr_count-1], 0, sizeof(rr_type));
/* realloc the rrs array one smaller */
rrset->rrs = region_alloc_init(db->region, rrs_orig,
sizeof(rr_type) * (rrset->rr_count-1));
if(!rrset->rrs) {
log_msg(LOG_ERR, "out of memory, %s:%d", __FILE__, __LINE__);
exit(1);
}
region_recycle(db->region, rrs_orig,
sizeof(rr_type) * rrset->rr_count);
rrset->rr_count --;
}
}
return 1;
}
