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packet.c
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packet.c
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/*
* packet.c
*
* dns packet implementation
*
* a Net::DNS like library for C
*
* (c) NLnet Labs, 2004-2006
*
* See the file LICENSE for the license
*/
#include <ldns/config.h>
#include <ldns/ldns.h>
#include <strings.h>
#include <limits.h>
#ifdef HAVE_SSL
#include <openssl/rand.h>
#endif
/* Access functions
* do this as functions to get type checking
*/
#define LDNS_EDNS_MASK_DO_BIT 0x8000
#define LDNS_EDNS_MASK_UNASSIGNED (0xFFFF & ~LDNS_EDNS_MASK_DO_BIT)
/* TODO defines for 3600 */
/* convert to and from numerical flag values */
ldns_lookup_table ldns_edns_flags[] = {
{ 3600, "do"},
{ 0, NULL}
};
/* read */
uint16_t
ldns_pkt_id(const ldns_pkt *packet)
{
return packet->_header->_id;
}
bool
ldns_pkt_qr(const ldns_pkt *packet)
{
return packet->_header->_qr;
}
bool
ldns_pkt_aa(const ldns_pkt *packet)
{
return packet->_header->_aa;
}
bool
ldns_pkt_tc(const ldns_pkt *packet)
{
return packet->_header->_tc;
}
bool
ldns_pkt_rd(const ldns_pkt *packet)
{
return packet->_header->_rd;
}
bool
ldns_pkt_cd(const ldns_pkt *packet)
{
return packet->_header->_cd;
}
bool
ldns_pkt_ra(const ldns_pkt *packet)
{
return packet->_header->_ra;
}
bool
ldns_pkt_ad(const ldns_pkt *packet)
{
return packet->_header->_ad;
}
ldns_pkt_opcode
ldns_pkt_get_opcode(const ldns_pkt *packet)
{
return packet->_header->_opcode;
}
ldns_pkt_rcode
ldns_pkt_get_rcode(const ldns_pkt *packet)
{
return packet->_header->_rcode;
}
uint16_t
ldns_pkt_qdcount(const ldns_pkt *packet)
{
return packet->_header->_qdcount;
}
uint16_t
ldns_pkt_ancount(const ldns_pkt *packet)
{
return packet->_header->_ancount;
}
uint16_t
ldns_pkt_nscount(const ldns_pkt *packet)
{
return packet->_header->_nscount;
}
uint16_t
ldns_pkt_arcount(const ldns_pkt *packet)
{
return packet->_header->_arcount;
}
ldns_rr_list *
ldns_pkt_question(const ldns_pkt *packet)
{
return packet->_question;
}
ldns_rr_list *
ldns_pkt_answer(const ldns_pkt *packet)
{
return packet->_answer;
}
ldns_rr_list *
ldns_pkt_authority(const ldns_pkt *packet)
{
return packet->_authority;
}
ldns_rr_list *
ldns_pkt_additional(const ldns_pkt *packet)
{
return packet->_additional;
}
/* return ALL section concatenated */
ldns_rr_list *
ldns_pkt_all(const ldns_pkt *packet)
{
ldns_rr_list *all, *prev_all;
all = ldns_rr_list_cat_clone(
ldns_pkt_question(packet),
ldns_pkt_answer(packet));
prev_all = all;
all = ldns_rr_list_cat_clone(all,
ldns_pkt_authority(packet));
ldns_rr_list_deep_free(prev_all);
prev_all = all;
all = ldns_rr_list_cat_clone(all,
ldns_pkt_additional(packet));
ldns_rr_list_deep_free(prev_all);
return all;
}
ldns_rr_list *
ldns_pkt_all_noquestion(const ldns_pkt *packet)
{
ldns_rr_list *all, *all2;
all = ldns_rr_list_cat_clone(
ldns_pkt_answer(packet),
ldns_pkt_authority(packet));
all2 = ldns_rr_list_cat_clone(all,
ldns_pkt_additional(packet));
ldns_rr_list_deep_free(all);
return all2;
}
size_t
ldns_pkt_size(const ldns_pkt *packet)
{
return packet->_size;
}
uint32_t
ldns_pkt_querytime(const ldns_pkt *packet)
{
return packet->_querytime;
}
ldns_rdf *
ldns_pkt_answerfrom(const ldns_pkt *packet)
{
return packet->_answerfrom;
}
struct timeval
ldns_pkt_timestamp(const ldns_pkt *packet)
{
return packet->timestamp;
}
uint16_t
ldns_pkt_edns_udp_size(const ldns_pkt *packet)
{
return packet->_edns_udp_size;
}
uint8_t
ldns_pkt_edns_extended_rcode(const ldns_pkt *packet)
{
return packet->_edns_extended_rcode;
}
uint8_t
ldns_pkt_edns_version(const ldns_pkt *packet)
{
return packet->_edns_version;
}
uint16_t
ldns_pkt_edns_z(const ldns_pkt *packet)
{
return packet->_edns_z;
}
bool
ldns_pkt_edns_do(const ldns_pkt *packet)
{
return (packet->_edns_z & LDNS_EDNS_MASK_DO_BIT);
}
void
ldns_pkt_set_edns_do(ldns_pkt *packet, bool value)
{
if (value) {
packet->_edns_z = packet->_edns_z | LDNS_EDNS_MASK_DO_BIT;
} else {
packet->_edns_z = packet->_edns_z & ~LDNS_EDNS_MASK_DO_BIT;
}
}
uint16_t
ldns_pkt_edns_unassigned(const ldns_pkt *packet)
{
return (packet->_edns_z & LDNS_EDNS_MASK_UNASSIGNED);
}
void
ldns_pkt_set_edns_unassigned(ldns_pkt *packet, uint16_t value)
{
packet->_edns_z = (packet->_edns_z & ~LDNS_EDNS_MASK_UNASSIGNED)
| (value & LDNS_EDNS_MASK_UNASSIGNED);
}
ldns_rdf *
ldns_pkt_edns_data(const ldns_pkt *packet)
{
return packet->_edns_data;
}
/* return only those rr that share the ownername */
ldns_rr_list *
ldns_pkt_rr_list_by_name(const ldns_pkt *packet,
const ldns_rdf *ownername,
ldns_pkt_section sec)
{
ldns_rr_list *rrs;
ldns_rr_list *ret;
uint16_t i;
if (!packet) {
return NULL;
}
rrs = ldns_pkt_get_section_clone(packet, sec);
ret = NULL;
for(i = 0; i < ldns_rr_list_rr_count(rrs); i++) {
if (ldns_dname_compare(ldns_rr_owner(
ldns_rr_list_rr(rrs, i)),
ownername) == 0) {
/* owner names match */
if (ret == NULL) {
ret = ldns_rr_list_new();
}
ldns_rr_list_push_rr(ret,
ldns_rr_clone(
ldns_rr_list_rr(rrs, i))
);
}
}
ldns_rr_list_deep_free(rrs);
return ret;
}
/* return only those rr that share a type */
ldns_rr_list *
ldns_pkt_rr_list_by_type(const ldns_pkt *packet,
ldns_rr_type type,
ldns_pkt_section sec)
{
ldns_rr_list *rrs;
ldns_rr_list *new;
uint16_t i;
if(!packet) {
return NULL;
}
rrs = ldns_pkt_get_section_clone(packet, sec);
new = ldns_rr_list_new();
for(i = 0; i < ldns_rr_list_rr_count(rrs); i++) {
if (type == ldns_rr_get_type(ldns_rr_list_rr(rrs, i))) {
/* types match */
ldns_rr_list_push_rr(new,
ldns_rr_clone(
ldns_rr_list_rr(rrs, i))
);
}
}
ldns_rr_list_deep_free(rrs);
if (ldns_rr_list_rr_count(new) == 0) {
ldns_rr_list_free(new);
return NULL;
} else {
return new;
}
}
/* return only those rrs that share name and type */
ldns_rr_list *
ldns_pkt_rr_list_by_name_and_type(const ldns_pkt *packet,
const ldns_rdf *ownername,
ldns_rr_type type,
ldns_pkt_section sec)
{
ldns_rr_list *rrs;
ldns_rr_list *new;
ldns_rr_list *ret;
uint16_t i;
if(!packet) {
return NULL;
}
rrs = ldns_pkt_get_section_clone(packet, sec);
new = ldns_rr_list_new();
ret = NULL;
for(i = 0; i < ldns_rr_list_rr_count(rrs); i++) {
if (type == ldns_rr_get_type(ldns_rr_list_rr(rrs, i)) &&
ldns_dname_compare(ldns_rr_owner(ldns_rr_list_rr(rrs, i)),
ownername
) == 0
) {
/* types match */
ldns_rr_list_push_rr(new, ldns_rr_clone(ldns_rr_list_rr(rrs, i)));
ret = new;
}
}
ldns_rr_list_deep_free(rrs);
if (!ret) {
ldns_rr_list_free(new);
}
return ret;
}
bool
ldns_pkt_rr(const ldns_pkt *pkt, ldns_pkt_section sec, const ldns_rr *rr)
{
bool result = false;
switch (sec) {
case LDNS_SECTION_QUESTION:
return ldns_rr_list_contains_rr(ldns_pkt_question(pkt), rr);
case LDNS_SECTION_ANSWER:
return ldns_rr_list_contains_rr(ldns_pkt_answer(pkt), rr);
case LDNS_SECTION_AUTHORITY:
return ldns_rr_list_contains_rr(ldns_pkt_authority(pkt), rr);
case LDNS_SECTION_ADDITIONAL:
return ldns_rr_list_contains_rr(ldns_pkt_additional(pkt), rr);
case LDNS_SECTION_ANY:
result = ldns_rr_list_contains_rr(ldns_pkt_question(pkt), rr);
/* fallthrough */
case LDNS_SECTION_ANY_NOQUESTION:
result = result
|| ldns_rr_list_contains_rr(ldns_pkt_answer(pkt), rr)
|| ldns_rr_list_contains_rr(ldns_pkt_authority(pkt), rr)
|| ldns_rr_list_contains_rr(ldns_pkt_additional(pkt), rr);
}
return result;
}
uint16_t
ldns_pkt_section_count(const ldns_pkt *packet, ldns_pkt_section s)
{
switch(s) {
case LDNS_SECTION_QUESTION:
return ldns_pkt_qdcount(packet);
case LDNS_SECTION_ANSWER:
return ldns_pkt_ancount(packet);
case LDNS_SECTION_AUTHORITY:
return ldns_pkt_nscount(packet);
case LDNS_SECTION_ADDITIONAL:
return ldns_pkt_arcount(packet);
case LDNS_SECTION_ANY:
return ldns_pkt_qdcount(packet) +
ldns_pkt_ancount(packet) +
ldns_pkt_nscount(packet) +
ldns_pkt_arcount(packet);
case LDNS_SECTION_ANY_NOQUESTION:
return ldns_pkt_ancount(packet) +
ldns_pkt_nscount(packet) +
ldns_pkt_arcount(packet);
default:
return 0;
}
}
bool
ldns_pkt_empty(ldns_pkt *p)
{
if (!p) {
return true; /* NULL is empty? */
}
if (ldns_pkt_section_count(p, LDNS_SECTION_ANY) > 0) {
return false;
} else {
return true;
}
}
ldns_rr_list *
ldns_pkt_get_section_clone(const ldns_pkt *packet, ldns_pkt_section s)
{
switch(s) {
case LDNS_SECTION_QUESTION:
return ldns_rr_list_clone(ldns_pkt_question(packet));
case LDNS_SECTION_ANSWER:
return ldns_rr_list_clone(ldns_pkt_answer(packet));
case LDNS_SECTION_AUTHORITY:
return ldns_rr_list_clone(ldns_pkt_authority(packet));
case LDNS_SECTION_ADDITIONAL:
return ldns_rr_list_clone(ldns_pkt_additional(packet));
case LDNS_SECTION_ANY:
/* these are already clones */
return ldns_pkt_all(packet);
case LDNS_SECTION_ANY_NOQUESTION:
return ldns_pkt_all_noquestion(packet);
default:
return NULL;
}
}
ldns_rr *ldns_pkt_tsig(const ldns_pkt *pkt) {
return pkt->_tsig_rr;
}
/* write */
void
ldns_pkt_set_id(ldns_pkt *packet, uint16_t id)
{
packet->_header->_id = id;
}
void
ldns_pkt_set_random_id(ldns_pkt *packet)
{
uint16_t rid = ldns_get_random();
ldns_pkt_set_id(packet, rid);
}
void
ldns_pkt_set_qr(ldns_pkt *packet, bool qr)
{
packet->_header->_qr = qr;
}
void
ldns_pkt_set_aa(ldns_pkt *packet, bool aa)
{
packet->_header->_aa = aa;
}
void
ldns_pkt_set_tc(ldns_pkt *packet, bool tc)
{
packet->_header->_tc = tc;
}
void
ldns_pkt_set_rd(ldns_pkt *packet, bool rd)
{
packet->_header->_rd = rd;
}
void
ldns_pkt_set_additional(ldns_pkt *p, ldns_rr_list *rr)
{
p->_additional = rr;
}
void
ldns_pkt_set_question(ldns_pkt *p, ldns_rr_list *rr)
{
p->_question = rr;
}
void
ldns_pkt_set_answer(ldns_pkt *p, ldns_rr_list *rr)
{
p->_answer = rr;
}
void
ldns_pkt_set_authority(ldns_pkt *p, ldns_rr_list *rr)
{
p->_authority = rr;
}
void
ldns_pkt_set_cd(ldns_pkt *packet, bool cd)
{
packet->_header->_cd = cd;
}
void
ldns_pkt_set_ra(ldns_pkt *packet, bool ra)
{
packet->_header->_ra = ra;
}
void
ldns_pkt_set_ad(ldns_pkt *packet, bool ad)
{
packet->_header->_ad = ad;
}
void
ldns_pkt_set_opcode(ldns_pkt *packet, ldns_pkt_opcode opcode)
{
packet->_header->_opcode = opcode;
}
void
ldns_pkt_set_rcode(ldns_pkt *packet, uint8_t rcode)
{
packet->_header->_rcode = rcode;
}
void
ldns_pkt_set_qdcount(ldns_pkt *packet, uint16_t qdcount)
{
packet->_header->_qdcount = qdcount;
}
void
ldns_pkt_set_ancount(ldns_pkt *packet, uint16_t ancount)
{
packet->_header->_ancount = ancount;
}
void
ldns_pkt_set_nscount(ldns_pkt *packet, uint16_t nscount)
{
packet->_header->_nscount = nscount;
}
void
ldns_pkt_set_arcount(ldns_pkt *packet, uint16_t arcount)
{
packet->_header->_arcount = arcount;
}
void
ldns_pkt_set_querytime(ldns_pkt *packet, uint32_t time)
{
packet->_querytime = time;
}
void
ldns_pkt_set_answerfrom(ldns_pkt *packet, ldns_rdf *answerfrom)
{
packet->_answerfrom = answerfrom;
}
void
ldns_pkt_set_timestamp(ldns_pkt *packet, struct timeval timeval)
{
packet->timestamp.tv_sec = timeval.tv_sec;
packet->timestamp.tv_usec = timeval.tv_usec;
}
void
ldns_pkt_set_size(ldns_pkt *packet, size_t s)
{
packet->_size = s;
}
void
ldns_pkt_set_edns_udp_size(ldns_pkt *packet, uint16_t s)
{
packet->_edns_udp_size = s;
}
void
ldns_pkt_set_edns_extended_rcode(ldns_pkt *packet, uint8_t c)
{
packet->_edns_extended_rcode = c;
}
void
ldns_pkt_set_edns_version(ldns_pkt *packet, uint8_t v)
{
packet->_edns_version = v;
}
void
ldns_pkt_set_edns_z(ldns_pkt *packet, uint16_t z)
{
packet->_edns_z = z;
}
void
ldns_pkt_set_edns_data(ldns_pkt *packet, ldns_rdf *data)
{
packet->_edns_data = data;
}
void
ldns_pkt_set_section_count(ldns_pkt *packet, ldns_pkt_section s, uint16_t count)
{
switch(s) {
case LDNS_SECTION_QUESTION:
ldns_pkt_set_qdcount(packet, count);
break;
case LDNS_SECTION_ANSWER:
ldns_pkt_set_ancount(packet, count);
break;
case LDNS_SECTION_AUTHORITY:
ldns_pkt_set_nscount(packet, count);
break;
case LDNS_SECTION_ADDITIONAL:
ldns_pkt_set_arcount(packet, count);
break;
case LDNS_SECTION_ANY:
case LDNS_SECTION_ANY_NOQUESTION:
break;
}
}
void ldns_pkt_set_tsig(ldns_pkt *pkt, ldns_rr *rr)
{
pkt->_tsig_rr = rr;
}
bool
ldns_pkt_push_rr(ldns_pkt *packet, ldns_pkt_section section, ldns_rr *rr)
{
switch(section) {
case LDNS_SECTION_QUESTION:
if (!ldns_rr_list_push_rr(ldns_pkt_question(packet), rr)) {
return false;
}
ldns_pkt_set_qdcount(packet, ldns_pkt_qdcount(packet) + 1);
break;
case LDNS_SECTION_ANSWER:
if (!ldns_rr_list_push_rr(ldns_pkt_answer(packet), rr)) {
return false;
}
ldns_pkt_set_ancount(packet, ldns_pkt_ancount(packet) + 1);
break;
case LDNS_SECTION_AUTHORITY:
if (!ldns_rr_list_push_rr(ldns_pkt_authority(packet), rr)) {
return false;
}
ldns_pkt_set_nscount(packet, ldns_pkt_nscount(packet) + 1);
break;
case LDNS_SECTION_ADDITIONAL:
if (!ldns_rr_list_push_rr(ldns_pkt_additional(packet), rr)) {
return false;
}
ldns_pkt_set_arcount(packet, ldns_pkt_arcount(packet) + 1);
break;
case LDNS_SECTION_ANY:
case LDNS_SECTION_ANY_NOQUESTION:
/* shouldn't this error? */
break;
}
return true;
}
bool
ldns_pkt_safe_push_rr(ldns_pkt *pkt, ldns_pkt_section sec, ldns_rr *rr)
{
/* check to see if its there */
if (ldns_pkt_rr(pkt, sec, rr)) {
/* already there */
return false;
}
return ldns_pkt_push_rr(pkt, sec, rr);
}
bool
ldns_pkt_push_rr_list(ldns_pkt *p, ldns_pkt_section s, ldns_rr_list *list)
{
size_t i;
for(i = 0; i < ldns_rr_list_rr_count(list); i++) {
if (!ldns_pkt_push_rr(p, s, ldns_rr_list_rr(list, i))) {
return false;
}
}
return true;
}
bool
ldns_pkt_safe_push_rr_list(ldns_pkt *p, ldns_pkt_section s, ldns_rr_list *list)
{
size_t i;
for(i = 0; i < ldns_rr_list_rr_count(list); i++) {
if (!ldns_pkt_safe_push_rr(p, s, ldns_rr_list_rr(list, i))) {
return false;
}
}
return true;
}
bool
ldns_pkt_edns(const ldns_pkt *pkt) {
return (ldns_pkt_edns_udp_size(pkt) > 0 ||
ldns_pkt_edns_extended_rcode(pkt) > 0 ||
ldns_pkt_edns_data(pkt) ||
ldns_pkt_edns_do(pkt) ||
pkt->_edns_present
);
}
/* Create/destroy/convert functions
*/
ldns_pkt *
ldns_pkt_new(void)
{
ldns_pkt *packet;
packet = LDNS_MALLOC(ldns_pkt);
if (!packet) {
return NULL;
}
packet->_header = LDNS_MALLOC(ldns_hdr);
if (!packet->_header) {
LDNS_FREE(packet);
return NULL;
}
packet->_question = ldns_rr_list_new();
packet->_answer = ldns_rr_list_new();
packet->_authority = ldns_rr_list_new();
packet->_additional = ldns_rr_list_new();
/* default everything to false */
ldns_pkt_set_qr(packet, false);
ldns_pkt_set_aa(packet, false);
ldns_pkt_set_tc(packet, false);
ldns_pkt_set_rd(packet, false);
ldns_pkt_set_ra(packet, false);
ldns_pkt_set_ad(packet, false);
ldns_pkt_set_cd(packet, false);
ldns_pkt_set_opcode(packet, LDNS_PACKET_QUERY);
ldns_pkt_set_rcode(packet, 0);
ldns_pkt_set_id(packet, 0);
ldns_pkt_set_size(packet, 0);
ldns_pkt_set_querytime(packet, 0);
memset(&packet->timestamp, 0, sizeof(packet->timestamp));
ldns_pkt_set_answerfrom(packet, NULL);
ldns_pkt_set_section_count(packet, LDNS_SECTION_QUESTION, 0);
ldns_pkt_set_section_count(packet, LDNS_SECTION_ANSWER, 0);
ldns_pkt_set_section_count(packet, LDNS_SECTION_AUTHORITY, 0);
ldns_pkt_set_section_count(packet, LDNS_SECTION_ADDITIONAL, 0);
ldns_pkt_set_edns_udp_size(packet, 0);
ldns_pkt_set_edns_extended_rcode(packet, 0);
ldns_pkt_set_edns_version(packet, 0);
ldns_pkt_set_edns_z(packet, 0);
ldns_pkt_set_edns_data(packet, NULL);
packet->_edns_present = false;
ldns_pkt_set_tsig(packet, NULL);
return packet;
}
void
ldns_pkt_free(ldns_pkt *packet)
{
if (packet) {
LDNS_FREE(packet->_header);
ldns_rr_list_deep_free(packet->_question);
ldns_rr_list_deep_free(packet->_answer);
ldns_rr_list_deep_free(packet->_authority);
ldns_rr_list_deep_free(packet->_additional);
ldns_rr_free(packet->_tsig_rr);
ldns_rdf_deep_free(packet->_edns_data);
ldns_rdf_deep_free(packet->_answerfrom);
LDNS_FREE(packet);
}
}
bool
ldns_pkt_set_flags(ldns_pkt *packet, uint16_t flags)
{
if (!packet) {
return false;
}
if ((flags & LDNS_QR) == LDNS_QR) {
ldns_pkt_set_qr(packet, true);
}
if ((flags & LDNS_AA) == LDNS_AA) {
ldns_pkt_set_aa(packet, true);
}
if ((flags & LDNS_RD) == LDNS_RD) {
ldns_pkt_set_rd(packet, true);
}
if ((flags & LDNS_TC) == LDNS_TC) {
ldns_pkt_set_tc(packet, true);
}
if ((flags & LDNS_CD) == LDNS_CD) {
ldns_pkt_set_cd(packet, true);
}
if ((flags & LDNS_RA) == LDNS_RA) {
ldns_pkt_set_ra(packet, true);
}
if ((flags & LDNS_AD) == LDNS_AD) {
ldns_pkt_set_ad(packet, true);
}
return true;
}
static ldns_rr*
ldns_pkt_authsoa(const ldns_rdf* rr_name, ldns_rr_class rr_class)
{
ldns_rr* soa_rr = ldns_rr_new();
ldns_rdf *owner_rdf;
ldns_rdf *mname_rdf;
ldns_rdf *rname_rdf;
ldns_rdf *serial_rdf;
ldns_rdf *refresh_rdf;
ldns_rdf *retry_rdf;
ldns_rdf *expire_rdf;
ldns_rdf *minimum_rdf;
if (!soa_rr) {
return NULL;
}
owner_rdf = ldns_rdf_clone(rr_name);
if (!owner_rdf) {
ldns_rr_free(soa_rr);
return NULL;
}
ldns_rr_set_owner(soa_rr, owner_rdf);
ldns_rr_set_type(soa_rr, LDNS_RR_TYPE_SOA);
ldns_rr_set_class(soa_rr, rr_class);
ldns_rr_set_question(soa_rr, false);
if (ldns_str2rdf_dname(&mname_rdf, ".") != LDNS_STATUS_OK) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, mname_rdf);
}
if (ldns_str2rdf_dname(&rname_rdf, ".") != LDNS_STATUS_OK) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, rname_rdf);
}
serial_rdf = ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32, 0);
if (!serial_rdf) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, serial_rdf);
}
refresh_rdf = ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32, 0);
if (!refresh_rdf) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, refresh_rdf);
}
retry_rdf = ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32, 0);
if (!retry_rdf) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, retry_rdf);
}
expire_rdf = ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32, 0);
if (!expire_rdf) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, expire_rdf);
}
minimum_rdf = ldns_native2rdf_int32(LDNS_RDF_TYPE_INT32, 0);
if (!minimum_rdf) {
ldns_rr_free(soa_rr);
return NULL;
} else {
ldns_rr_push_rdf(soa_rr, minimum_rdf);
}
return soa_rr;
}
static ldns_status
ldns_pkt_query_new_frm_str_internal(ldns_pkt **p, const char *name,
ldns_rr_type rr_type, ldns_rr_class rr_class, uint16_t flags,
ldns_rr* authsoa_rr)
{
ldns_pkt *packet;
ldns_rr *question_rr;
ldns_rdf *name_rdf;
packet = ldns_pkt_new();
if (!packet) {
return LDNS_STATUS_MEM_ERR;
}
if (!ldns_pkt_set_flags(packet, flags)) {
ldns_pkt_free(packet);
return LDNS_STATUS_ERR;
}
question_rr = ldns_rr_new();
if (!question_rr) {
ldns_pkt_free(packet);
return LDNS_STATUS_MEM_ERR;
}
if (rr_type == 0) {
rr_type = LDNS_RR_TYPE_A;
}
if (rr_class == 0) {
rr_class = LDNS_RR_CLASS_IN;
}
if (ldns_str2rdf_dname(&name_rdf, name) == LDNS_STATUS_OK) {
ldns_rr_set_owner(question_rr, name_rdf);
ldns_rr_set_type(question_rr, rr_type);
ldns_rr_set_class(question_rr, rr_class);
ldns_rr_set_question(question_rr, true);
ldns_pkt_push_rr(packet, LDNS_SECTION_QUESTION, question_rr);
} else {
ldns_rr_free(question_rr);
ldns_pkt_free(packet);
return LDNS_STATUS_ERR;
}
if (authsoa_rr) {
ldns_pkt_push_rr(packet, LDNS_SECTION_AUTHORITY, authsoa_rr);
}
packet->_tsig_rr = NULL;
ldns_pkt_set_answerfrom(packet, NULL);
if (p) {
*p = packet;
return LDNS_STATUS_OK;
} else {
ldns_pkt_free(packet);
return LDNS_STATUS_NULL;
}
}
ldns_status
ldns_pkt_query_new_frm_str(ldns_pkt **p, const char *name,
ldns_rr_type rr_type, ldns_rr_class rr_class, uint16_t flags)
{
return ldns_pkt_query_new_frm_str_internal(p, name, rr_type,
rr_class, flags, NULL);
}
ldns_status
ldns_pkt_ixfr_request_new_frm_str(ldns_pkt **p, const char *name,