ldns_rr *
ldns_axfr_next(ldns_resolver *resolver)
{
ldns_rr *cur_rr;
uint8_t *packet_wire;
size_t packet_wire_size;
ldns_lookup_table *rcode;
ldns_status status;
/* check if start() has been called */
if (!resolver || resolver->_socket == 0) {
return NULL;
}
if (resolver->_cur_axfr_pkt) {
if (resolver->_axfr_i == ldns_pkt_ancount(resolver->_cur_axfr_pkt)) {
ldns_pkt_free(resolver->_cur_axfr_pkt);
resolver->_cur_axfr_pkt = NULL;
return ldns_axfr_next(resolver);
}
cur_rr = ldns_rr_clone(ldns_rr_list_rr(
ldns_pkt_answer(resolver->_cur_axfr_pkt),
resolver->_axfr_i));
resolver->_axfr_i++;
if (ldns_rr_get_type(cur_rr) == LDNS_RR_TYPE_SOA) {
resolver->_axfr_soa_count++;
if (resolver->_axfr_soa_count >= 2) {
close(resolver->_socket);
resolver->_socket = 0;
ldns_pkt_free(resolver->_cur_axfr_pkt);
resolver->_cur_axfr_pkt = NULL;
}
}
return cur_rr;
} else {
packet_wire = ldns_tcp_read_wire(resolver->_socket, &packet_wire_size);
if(!packet_wire)
return NULL;
status = ldns_wire2pkt(&resolver->_cur_axfr_pkt, packet_wire,
packet_wire_size);
free(packet_wire);
resolver->_axfr_i = 0;
if (status != LDNS_STATUS_OK) {
/* TODO: make status return type of this function (...api change) */
fprintf(stderr, "Error parsing rr during AXFR: %s\n", ldns_get_errorstr_by_id(status));
return NULL;
} else if (ldns_pkt_get_rcode(resolver->_cur_axfr_pkt) != 0) {
rcode = ldns_lookup_by_id(ldns_rcodes, (int) ldns_pkt_get_rcode(resolver->_cur_axfr_pkt));
fprintf(stderr, "Error in AXFR: %s\n", rcode->name);
return NULL;
} else {
return ldns_axfr_next(resolver);
}
}
}
ldns_rr *
ldns_axfr_next(ldns_resolver *resolver)
{
ldns_rr *cur_rr;
uint8_t *packet_wire;
size_t packet_wire_size;
ldns_lookup_table *rcode;
ldns_status status;
/* check if start() has been called */
if (!resolver || resolver->_socket == 0) {
return NULL;
}
if (resolver->_cur_axfr_pkt) {
if (resolver->_axfr_i == ldns_pkt_ancount(resolver->_cur_axfr_pkt)) {
ldns_pkt_free(resolver->_cur_axfr_pkt);
resolver->_cur_axfr_pkt = NULL;
return ldns_axfr_next(resolver);
}
cur_rr = ldns_rr_clone(ldns_rr_list_rr(
ldns_pkt_answer(resolver->_cur_axfr_pkt),
resolver->_axfr_i));
resolver->_axfr_i++;
if (ldns_rr_get_type(cur_rr) == LDNS_RR_TYPE_SOA) {
resolver->_axfr_soa_count++;
if (resolver->_axfr_soa_count >= 2) {
#ifndef USE_WINSOCK
close(resolver->_socket);
#else
closesocket(resolver->_socket);
#endif
resolver->_socket = 0;
ldns_pkt_free(resolver->_cur_axfr_pkt);
resolver->_cur_axfr_pkt = NULL;
}
}
return cur_rr;
} else {
packet_wire = ldns_tcp_read_wire(resolver->_socket, &packet_wire_size);
if(!packet_wire)
return NULL;
status = ldns_wire2pkt(&resolver->_cur_axfr_pkt, packet_wire,
packet_wire_size);
free(packet_wire);
resolver->_axfr_i = 0;
if (status != LDNS_STATUS_OK) {
/* TODO: make status return type of this function (...api change) */
fprintf(stderr, "Error parsing rr during AXFR: %s\n", ldns_get_errorstr_by_id(status));
/* RoRi: we must now also close the socket, otherwise subsequent uses of the
same resolver structure will fail because the link is still open or
in an undefined state */
#ifndef USE_WINSOCK
close(resolver->_socket);
#else
closesocket(resolver->_socket);
#endif
resolver->_socket = 0;
return NULL;
} else if (ldns_pkt_get_rcode(resolver->_cur_axfr_pkt) != 0) {
rcode = ldns_lookup_by_id(ldns_rcodes, (int) ldns_pkt_get_rcode(resolver->_cur_axfr_pkt));
fprintf(stderr, "Error in AXFR: %s\n", rcode->name);
/* RoRi: we must now also close the socket, otherwise subsequent uses of the
same resolver structure will fail because the link is still open or
in an undefined state */
#ifndef USE_WINSOCK
close(resolver->_socket);
#else
closesocket(resolver->_socket);
#endif
resolver->_socket = 0;
return NULL;
} else {
return ldns_axfr_next(resolver);
}
}
}
