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host2str.c
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host2str.c
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/*
* host2str.c
*
* conversion routines from the host format
* to the presentation format (strings)
*
* 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 <limits.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#ifdef HAVE_ARPA_INET_H
#include <arpa/inet.h>
#endif
#ifdef HAVE_NETDB_H
#include <netdb.h>
#endif
#include <time.h>
#include <sys/time.h>
#ifndef INET_ADDRSTRLEN
#define INET_ADDRSTRLEN 16
#endif
#ifndef INET6_ADDRSTRLEN
#define INET6_ADDRSTRLEN 46
#endif
/* lookup tables for standard DNS stuff */
/* Taken from RFC 2535, section 7. */
ldns_lookup_table ldns_algorithms[] = {
{ LDNS_RSAMD5, "RSAMD5" },
{ LDNS_DH, "DH" },
{ LDNS_DSA, "DSA" },
{ LDNS_ECC, "ECC" },
{ LDNS_RSASHA1, "RSASHA1" },
{ LDNS_DSA_NSEC3, "DSA-NSEC3-SHA1" },
{ LDNS_RSASHA1_NSEC3, "RSASHA1-NSEC3-SHA1" },
#ifdef USE_SHA2
{ LDNS_RSASHA256, "RSASHA256"},
{ LDNS_RSASHA512, "RSASHA512"},
#endif
#ifdef USE_GOST
{ LDNS_ECC_GOST, "ECC-GOST"},
#endif
#ifdef USE_ECDSA
{ LDNS_ECDSAP256SHA256, "ECDSAP256SHA256"},
{ LDNS_ECDSAP384SHA384, "ECDSAP384SHA384"},
#endif
{ LDNS_INDIRECT, "INDIRECT" },
{ LDNS_PRIVATEDNS, "PRIVATEDNS" },
{ LDNS_PRIVATEOID, "PRIVATEOID" },
{ 0, NULL }
};
/* Taken from RFC 4398 */
ldns_lookup_table ldns_cert_algorithms[] = {
{ LDNS_CERT_PKIX, "PKIX" },
{ LDNS_CERT_SPKI, "SPKI" },
{ LDNS_CERT_PGP, "PGP" },
{ LDNS_CERT_IPKIX, "IPKIX" },
{ LDNS_CERT_ISPKI, "ISPKI" },
{ LDNS_CERT_IPGP, "IPGP" },
{ LDNS_CERT_ACPKIX, "ACPKIX" },
{ LDNS_CERT_IACPKIX, "IACPKIX" },
{ LDNS_CERT_URI, "URI" },
{ LDNS_CERT_OID, "OID" },
{ 0, NULL }
};
/* classes */
ldns_lookup_table ldns_rr_classes[] = {
{ LDNS_RR_CLASS_IN, "IN" },
{ LDNS_RR_CLASS_CH, "CH" },
{ LDNS_RR_CLASS_HS, "HS" },
{ LDNS_RR_CLASS_NONE, "NONE" },
{ LDNS_RR_CLASS_ANY, "ANY" },
{ 0, NULL }
};
/* if these are used elsewhere */
ldns_lookup_table ldns_rcodes[] = {
{ LDNS_RCODE_NOERROR, "NOERROR" },
{ LDNS_RCODE_FORMERR, "FORMERR" },
{ LDNS_RCODE_SERVFAIL, "SERVFAIL" },
{ LDNS_RCODE_NXDOMAIN, "NXDOMAIN" },
{ LDNS_RCODE_NOTIMPL, "NOTIMPL" },
{ LDNS_RCODE_REFUSED, "REFUSED" },
{ LDNS_RCODE_YXDOMAIN, "YXDOMAIN" },
{ LDNS_RCODE_YXRRSET, "YXRRSET" },
{ LDNS_RCODE_NXRRSET, "NXRRSET" },
{ LDNS_RCODE_NOTAUTH, "NOTAUTH" },
{ LDNS_RCODE_NOTZONE, "NOTZONE" },
{ 0, NULL }
};
ldns_lookup_table ldns_opcodes[] = {
{ LDNS_PACKET_QUERY, "QUERY" },
{ LDNS_PACKET_IQUERY, "IQUERY" },
{ LDNS_PACKET_STATUS, "STATUS" },
{ LDNS_PACKET_NOTIFY, "NOTIFY" },
{ LDNS_PACKET_UPDATE, "UPDATE" },
{ 0, NULL }
};
const ldns_output_format ldns_output_format_nocomments_record = { 0, NULL };
const ldns_output_format *ldns_output_format_nocomments
= &ldns_output_format_nocomments_record;
const ldns_output_format ldns_output_format_onlykeyids_record = {
LDNS_COMMENT_KEY, NULL
};
const ldns_output_format *ldns_output_format_onlykeyids
= &ldns_output_format_onlykeyids_record;
const ldns_output_format *ldns_output_format_default
= &ldns_output_format_onlykeyids_record;
const ldns_output_format ldns_output_format_bubblebabble_record = {
LDNS_COMMENT_KEY | LDNS_COMMENT_BUBBLEBABBLE | LDNS_COMMENT_FLAGS, NULL
};
const ldns_output_format *ldns_output_format_bubblebabble
= &ldns_output_format_bubblebabble_record;
ldns_status
ldns_pkt_opcode2buffer_str(ldns_buffer *output, ldns_pkt_opcode opcode)
{
ldns_lookup_table *lt = ldns_lookup_by_id(ldns_opcodes, opcode);
if (lt && lt->name) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "OPCODE%u", opcode);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_pkt_rcode2buffer_str(ldns_buffer *output, ldns_pkt_rcode rcode)
{
ldns_lookup_table *lt = ldns_lookup_by_id(ldns_rcodes, rcode);
if (lt && lt->name) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "RCODE%u", rcode);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_algorithm2buffer_str(ldns_buffer *output,
ldns_algorithm algorithm)
{
ldns_lookup_table *lt = ldns_lookup_by_id(ldns_algorithms,
algorithm);
if (lt && lt->name) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "ALG%u", algorithm);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_cert_algorithm2buffer_str(ldns_buffer *output,
ldns_cert_algorithm cert_algorithm)
{
ldns_lookup_table *lt = ldns_lookup_by_id(ldns_cert_algorithms,
cert_algorithm);
if (lt && lt->name) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "CERT_ALG%u",
cert_algorithm);
}
return ldns_buffer_status(output);
}
char *
ldns_pkt_opcode2str(ldns_pkt_opcode opcode)
{
char *str;
ldns_buffer *buf;
buf = ldns_buffer_new(12);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_pkt_opcode2buffer_str(buf, opcode) == LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
char *
ldns_pkt_rcode2str(ldns_pkt_rcode rcode)
{
char *str;
ldns_buffer *buf;
buf = ldns_buffer_new(10);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_pkt_rcode2buffer_str(buf, rcode) == LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
char *
ldns_pkt_algorithm2str(ldns_algorithm algorithm)
{
char *str;
ldns_buffer *buf;
buf = ldns_buffer_new(10);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_algorithm2buffer_str(buf, algorithm)
== LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
char *
ldns_pkt_cert_algorithm2str(ldns_cert_algorithm cert_algorithm)
{
char *str;
ldns_buffer *buf;
buf = ldns_buffer_new(10);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_cert_algorithm2buffer_str(buf, cert_algorithm)
== LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
/* do NOT pass compressed data here :p */
ldns_status
ldns_rdf2buffer_str_dname(ldns_buffer *output, const ldns_rdf *dname)
{
/* can we do with 1 pos var? or without at all? */
uint8_t src_pos = 0;
uint8_t len;
uint8_t *data;
uint8_t i;
unsigned char c;
data = (uint8_t*)ldns_rdf_data(dname);
len = data[src_pos];
if (ldns_rdf_size(dname) > LDNS_MAX_DOMAINLEN) {
/* too large, return */
return LDNS_STATUS_DOMAINNAME_OVERFLOW;
}
/* special case: root label */
if (1 == ldns_rdf_size(dname)) {
ldns_buffer_printf(output, ".");
} else {
while ((len > 0) && src_pos < ldns_rdf_size(dname)) {
src_pos++;
for(i = 0; i < len; i++) {
/* paranoia check for various 'strange'
characters in dnames
*/
c = (unsigned char) data[src_pos];
if(c == '.' || c == ';' ||
c == '(' || c == ')' ||
c == '\\') {
ldns_buffer_printf(output, "\\%c",
data[src_pos]);
} else if (!(isascii(c) && isgraph(c))) {
ldns_buffer_printf(output, "\\%03u",
data[src_pos]);
} else {
ldns_buffer_printf(output, "%c", data[src_pos]);
}
src_pos++;
}
if (src_pos < ldns_rdf_size(dname)) {
ldns_buffer_printf(output, ".");
}
len = data[src_pos];
}
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_int8(ldns_buffer *output, const ldns_rdf *rdf)
{
uint8_t data = ldns_rdf_data(rdf)[0];
ldns_buffer_printf(output, "%lu", (unsigned long) data);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_int16(ldns_buffer *output, const ldns_rdf *rdf)
{
uint16_t data = ldns_read_uint16(ldns_rdf_data(rdf));
ldns_buffer_printf(output, "%lu", (unsigned long) data);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_int32(ldns_buffer *output, const ldns_rdf *rdf)
{
uint32_t data = ldns_read_uint32(ldns_rdf_data(rdf));
ldns_buffer_printf(output, "%lu", (unsigned long) data);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_time(ldns_buffer *output, const ldns_rdf *rdf)
{
/* create a YYYYMMDDHHMMSS string if possible */
struct tm tm;
char date_buf[16];
memset(&tm, 0, sizeof(tm));
if (ldns_serial_arithmitics_gmtime_r(ldns_rdf2native_int32(rdf), time(NULL), &tm)
&& strftime(date_buf, 15, "%Y%m%d%H%M%S", &tm)) {
ldns_buffer_printf(output, "%s", date_buf);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_a(ldns_buffer *output, const ldns_rdf *rdf)
{
char str[INET_ADDRSTRLEN];
if (inet_ntop(AF_INET, ldns_rdf_data(rdf), str, INET_ADDRSTRLEN)) {
ldns_buffer_printf(output, "%s", str);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_aaaa(ldns_buffer *output, const ldns_rdf *rdf)
{
char str[INET6_ADDRSTRLEN];
if (inet_ntop(AF_INET6, ldns_rdf_data(rdf), str, INET6_ADDRSTRLEN)) {
ldns_buffer_printf(output, "%s", str);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_str(ldns_buffer *output, const ldns_rdf *rdf)
{
const uint8_t *data = ldns_rdf_data(rdf);
uint8_t length = data[0];
size_t i;
ldns_buffer_printf(output, "\"");
for (i = 1; i <= length; ++i) {
char ch = (char) data[i];
if (isprint((int)ch) || ch=='\t') {
if (ch=='\"'||ch=='\\')
ldns_buffer_printf(output, "\\%c", ch);
else
ldns_buffer_printf(output, "%c", ch);
} else {
ldns_buffer_printf(output, "\\%03u",
(unsigned)(uint8_t) ch);
}
}
ldns_buffer_printf(output, "\"");
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_b64(ldns_buffer *output, const ldns_rdf *rdf)
{
size_t size = ldns_b64_ntop_calculate_size(ldns_rdf_size(rdf));
char *b64 = LDNS_XMALLOC(char, size);
if(!b64) return LDNS_STATUS_MEM_ERR;
if (ldns_b64_ntop(ldns_rdf_data(rdf), ldns_rdf_size(rdf), b64, size)) {
ldns_buffer_printf(output, "%s", b64);
}
LDNS_FREE(b64);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_b32_ext(ldns_buffer *output, const ldns_rdf *rdf)
{
size_t size;
char *b32;
if(ldns_rdf_size(rdf) == 0)
return LDNS_STATUS_OK;
/* remove -1 for the b32-hash-len octet */
size = ldns_b32_ntop_calculate_size(ldns_rdf_size(rdf) - 1);
/* add one for the end nul for the string */
b32 = LDNS_XMALLOC(char, size + 1);
if(!b32) return LDNS_STATUS_MEM_ERR;
size = (size_t) ldns_b32_ntop_extended_hex(ldns_rdf_data(rdf) + 1,
ldns_rdf_size(rdf) - 1, b32, size+1);
if (size > 0) {
ldns_buffer_printf(output, "%s", b32);
}
LDNS_FREE(b32);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_hex(ldns_buffer *output, const ldns_rdf *rdf)
{
size_t i;
for (i = 0; i < ldns_rdf_size(rdf); i++) {
ldns_buffer_printf(output, "%02x", ldns_rdf_data(rdf)[i]);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_type(ldns_buffer *output, const ldns_rdf *rdf)
{
uint16_t data = ldns_read_uint16(ldns_rdf_data(rdf));
const ldns_rr_descriptor *descriptor;
descriptor = ldns_rr_descript(data);
if (descriptor && descriptor->_name) {
ldns_buffer_printf(output, "%s", descriptor->_name);
} else {
ldns_buffer_printf(output, "TYPE%u", data);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_class(ldns_buffer *output, const ldns_rdf *rdf)
{
uint16_t data = ldns_read_uint16(ldns_rdf_data(rdf));
ldns_lookup_table *lt;
lt = ldns_lookup_by_id(ldns_rr_classes, (int) data);
if (lt) {
ldns_buffer_printf(output, "\t%s", lt->name);
} else {
ldns_buffer_printf(output, "\tCLASS%d", data);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_cert_alg(ldns_buffer *output, const ldns_rdf *rdf)
{
uint16_t data = ldns_read_uint16(ldns_rdf_data(rdf));
ldns_lookup_table *lt;
lt = ldns_lookup_by_id(ldns_cert_algorithms, (int) data);
if (lt) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "%d", data);
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_alg(ldns_buffer *output, const ldns_rdf *rdf)
{
/* don't use algorithm mnemonics in the presentation format
this kind of got sneaked into the rfc's */
uint8_t data = ldns_rdf_data(rdf)[0];
ldns_buffer_printf(output, "%d", data);
return ldns_buffer_status(output);
}
static void
loc_cm_print(ldns_buffer *output, uint8_t mantissa, uint8_t exponent)
{
uint8_t i;
/* is it 0.<two digits> ? */
if(exponent < 2) {
if(exponent == 1)
mantissa *= 10;
ldns_buffer_printf(output, "0.%02ld", (long)mantissa);
return;
}
/* always <digit><string of zeros> */
ldns_buffer_printf(output, "%d", (int)mantissa);
for(i=0; i<exponent-2; i++)
ldns_buffer_printf(output, "0");
}
ldns_status
ldns_rr_type2buffer_str(ldns_buffer *output, const ldns_rr_type type)
{
const ldns_rr_descriptor *descriptor;
descriptor = ldns_rr_descript(type);
if (descriptor && descriptor->_name) {
ldns_buffer_printf(output, "%s", descriptor->_name);
} else {
/* exceptions for pseudotypes */
switch (type) {
case LDNS_RR_TYPE_IXFR:
ldns_buffer_printf(output, "IXFR");
break;
case LDNS_RR_TYPE_AXFR:
ldns_buffer_printf(output, "AXFR");
break;
case LDNS_RR_TYPE_MAILA:
ldns_buffer_printf(output, "MAILA");
break;
case LDNS_RR_TYPE_MAILB:
ldns_buffer_printf(output, "MAILB");
break;
case LDNS_RR_TYPE_ANY:
ldns_buffer_printf(output, "ANY");
break;
default:
ldns_buffer_printf(output, "TYPE%u", type);
}
}
return ldns_buffer_status(output);
}
char *
ldns_rr_type2str(const ldns_rr_type type)
{
char *str;
ldns_buffer *buf;
buf = ldns_buffer_new(10);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_rr_type2buffer_str(buf, type) == LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
ldns_status
ldns_rr_class2buffer_str(ldns_buffer *output,
const ldns_rr_class klass)
{
ldns_lookup_table *lt;
lt = ldns_lookup_by_id(ldns_rr_classes, klass);
if (lt) {
ldns_buffer_printf(output, "%s", lt->name);
} else {
ldns_buffer_printf(output, "CLASS%d", klass);
}
return ldns_buffer_status(output);
}
char *
ldns_rr_class2str(const ldns_rr_class klass)
{
ldns_buffer *buf;
char *str;
buf = ldns_buffer_new(10);
if (!buf) {
return NULL;
}
str = NULL;
if (ldns_rr_class2buffer_str(buf, klass) == LDNS_STATUS_OK) {
str = ldns_buffer2str(buf);
}
ldns_buffer_free(buf);
return str;
}
ldns_status
ldns_rdf2buffer_str_loc(ldns_buffer *output, const ldns_rdf *rdf)
{
/* we could do checking (ie degrees < 90 etc)? */
uint8_t version = ldns_rdf_data(rdf)[0];
uint8_t size;
uint8_t horizontal_precision;
uint8_t vertical_precision;
uint32_t longitude;
uint32_t latitude;
uint32_t altitude;
char northerness;
char easterness;
uint32_t h;
uint32_t m;
double s;
uint32_t equator = (uint32_t) ldns_power(2, 31);
if (version == 0) {
size = ldns_rdf_data(rdf)[1];
horizontal_precision = ldns_rdf_data(rdf)[2];
vertical_precision = ldns_rdf_data(rdf)[3];
latitude = ldns_read_uint32(&ldns_rdf_data(rdf)[4]);
longitude = ldns_read_uint32(&ldns_rdf_data(rdf)[8]);
altitude = ldns_read_uint32(&ldns_rdf_data(rdf)[12]);
if (latitude > equator) {
northerness = 'N';
latitude = latitude - equator;
} else {
northerness = 'S';
latitude = equator - latitude;
}
h = latitude / (1000 * 60 * 60);
latitude = latitude % (1000 * 60 * 60);
m = latitude / (1000 * 60);
latitude = latitude % (1000 * 60);
s = (double) latitude / 1000.0;
ldns_buffer_printf(output, "%02u %02u %0.3f %c ",
h, m, s, northerness);
if (longitude > equator) {
easterness = 'E';
longitude = longitude - equator;
} else {
easterness = 'W';
longitude = equator - longitude;
}
h = longitude / (1000 * 60 * 60);
longitude = longitude % (1000 * 60 * 60);
m = longitude / (1000 * 60);
longitude = longitude % (1000 * 60);
s = (double) longitude / (1000.0);
ldns_buffer_printf(output, "%02u %02u %0.3f %c ",
h, m, s, easterness);
s = ((double) altitude) / 100;
s -= 100000;
if(altitude%100 != 0)
ldns_buffer_printf(output, "%.2f", s);
else
ldns_buffer_printf(output, "%.0f", s);
ldns_buffer_printf(output, "m ");
loc_cm_print(output, (size & 0xf0) >> 4, size & 0x0f);
ldns_buffer_printf(output, "m ");
loc_cm_print(output, (horizontal_precision & 0xf0) >> 4,
horizontal_precision & 0x0f);
ldns_buffer_printf(output, "m ");
loc_cm_print(output, (vertical_precision & 0xf0) >> 4,
vertical_precision & 0x0f);
ldns_buffer_printf(output, "m");
return ldns_buffer_status(output);
} else {
return ldns_rdf2buffer_str_hex(output, rdf);
}
}
ldns_status
ldns_rdf2buffer_str_unknown(ldns_buffer *output, const ldns_rdf *rdf)
{
ldns_buffer_printf(output, "\\# %u ", ldns_rdf_size(rdf));
return ldns_rdf2buffer_str_hex(output, rdf);
}
ldns_status
ldns_rdf2buffer_str_nsap(ldns_buffer *output, const ldns_rdf *rdf)
{
ldns_buffer_printf(output, "0x");
return ldns_rdf2buffer_str_hex(output, rdf);
}
ldns_status
ldns_rdf2buffer_str_atma(ldns_buffer *output, const ldns_rdf *rdf)
{
return ldns_rdf2buffer_str_hex(output, rdf);
}
ldns_status
ldns_rdf2buffer_str_wks(ldns_buffer *output, const ldns_rdf *rdf)
{
/* protocol, followed by bitmap of services */
struct protoent *protocol;
char *proto_name = NULL;
uint8_t protocol_nr;
struct servent *service;
uint16_t current_service;
protocol_nr = ldns_rdf_data(rdf)[0];
protocol = getprotobynumber((int) protocol_nr);
if (protocol && (protocol->p_name != NULL)) {
proto_name = protocol->p_name;
ldns_buffer_printf(output, "%s ", protocol->p_name);
} else {
ldns_buffer_printf(output, "%u ", protocol_nr);
}
#ifdef HAVE_ENDPROTOENT
endprotoent();
#endif
for (current_service = 0;
current_service < ldns_rdf_size(rdf) * 7; current_service++) {
if (ldns_get_bit(&(ldns_rdf_data(rdf)[1]), current_service)) {
service = getservbyport((int) htons(current_service),
proto_name);
if (service && service->s_name) {
ldns_buffer_printf(output, "%s ", service->s_name);
} else {
ldns_buffer_printf(output, "%u ", current_service);
}
#ifdef HAVE_ENDSERVENT
endservent();
#endif
}
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_nsec(ldns_buffer *output, const ldns_rdf *rdf)
{
/* Note: this code is duplicated in higher.c in
* ldns_nsec_type_check() function
*/
uint8_t window_block_nr;
uint8_t bitmap_length;
uint16_t type;
uint16_t pos = 0;
uint16_t bit_pos;
uint8_t *data = ldns_rdf_data(rdf);
const ldns_rr_descriptor *descriptor;
while(pos < ldns_rdf_size(rdf)) {
window_block_nr = data[pos];
bitmap_length = data[pos + 1];
pos += 2;
for (bit_pos = 0; bit_pos < (bitmap_length) * 8; bit_pos++) {
if (ldns_get_bit(&data[pos], bit_pos)) {
type = 256 * (uint16_t) window_block_nr + bit_pos;
descriptor = ldns_rr_descript(type);
if (descriptor && descriptor->_name) {
ldns_buffer_printf(output, "%s ",
descriptor->_name);
} else {
ldns_buffer_printf(output, "TYPE%u ", type);
}
}
}
pos += (uint16_t) bitmap_length;
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_nsec3_salt(ldns_buffer *output, const ldns_rdf *rdf)
{
uint8_t salt_length;
uint8_t salt_pos;
uint8_t *data = ldns_rdf_data(rdf);
if(ldns_rdf_size(rdf) == 0) {
output->_status = LDNS_STATUS_ERR;
return ldns_buffer_status(output);
}
salt_length = data[0];
/* from now there are variable length entries so remember pos */
if (salt_length == 0 || ((size_t)salt_length)+1 > ldns_rdf_size(rdf)) {
ldns_buffer_printf(output, "- ");
} else {
for (salt_pos = 0; salt_pos < salt_length; salt_pos++) {
ldns_buffer_printf(output, "%02x", data[1 + salt_pos]);
}
ldns_buffer_printf(output, " ");
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_period(ldns_buffer *output, const ldns_rdf *rdf)
{
/* period is the number of seconds */
uint32_t p = ldns_read_uint32(ldns_rdf_data(rdf));
ldns_buffer_printf(output, "%u", p);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_tsigtime(ldns_buffer *output,const ldns_rdf *rdf)
{
/* tsigtime is 48 bits network order unsigned integer */
uint64_t tsigtime = 0;
uint8_t *data = ldns_rdf_data(rdf);
if (ldns_rdf_size(rdf) != 6) {
return LDNS_STATUS_ERR;
}
tsigtime = ldns_read_uint16(data);
tsigtime *= 65536;
tsigtime += ldns_read_uint16(data+2);
tsigtime *= 65536;
ldns_buffer_printf(output, "%llu ", tsigtime);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_apl(ldns_buffer *output, const ldns_rdf *rdf)
{
uint8_t *data = ldns_rdf_data(rdf);
uint16_t address_family;
uint8_t prefix;
bool negation;
uint8_t adf_length;
size_t i;
size_t pos = 0;
while (pos < (unsigned int) ldns_rdf_size(rdf)) {
if(pos + 3 >= (unsigned)ldns_rdf_size(rdf))
return LDNS_STATUS_SYNTAX_RDATA_ERR;
address_family = ldns_read_uint16(&data[pos]);
prefix = data[pos + 2];
negation = data[pos + 3] & LDNS_APL_NEGATION;
adf_length = data[pos + 3] & LDNS_APL_MASK;
if (address_family == LDNS_APL_IP4) {
/* check if prefix < 32? */
if (negation) {
ldns_buffer_printf(output, "!");
}
ldns_buffer_printf(output, "%u:", address_family);
/* address is variable length 0 - 4 */
for (i = 0; i < 4; i++) {
if (i > 0) {
ldns_buffer_printf(output, ".");
}
if (i < (unsigned short) adf_length) {
if(pos+i+4 >= ldns_rdf_size(rdf))
return LDNS_STATUS_SYNTAX_RDATA_ERR;
ldns_buffer_printf(output, "%d",
data[pos + i + 4]);
} else {
ldns_buffer_printf(output, "0");
}
}
ldns_buffer_printf(output, "/%u ", prefix);
} else if (address_family == LDNS_APL_IP6) {
/* check if prefix < 128? */
if (negation) {
ldns_buffer_printf(output, "!");
}
ldns_buffer_printf(output, "%u:", address_family);
/* address is variable length 0 - 16 */
for (i = 0; i < 16; i++) {
if (i % 2 == 0 && i > 0) {
ldns_buffer_printf(output, ":");
}
if (i < (unsigned short) adf_length) {
if(pos+i+4 >= ldns_rdf_size(rdf))
return LDNS_STATUS_SYNTAX_RDATA_ERR;
ldns_buffer_printf(output, "%02x",
data[pos + i + 4]);
} else {
ldns_buffer_printf(output, "00");
}
}
ldns_buffer_printf(output, "/%u ", prefix);
} else {
/* unknown address family */
ldns_buffer_printf(output, "Unknown address family: %u data: ",
address_family);
for (i = 1; i < (unsigned short) (4 + adf_length); i++) {
if(pos+i >= ldns_rdf_size(rdf))
return LDNS_STATUS_SYNTAX_RDATA_ERR;
ldns_buffer_printf(output, "%02x", data[i]);
}
}
pos += 4 + adf_length;
}
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_int16_data(ldns_buffer *output, const ldns_rdf *rdf)
{
/* Subtract the size (2) of the number that specifies the length */
size_t size = ldns_b64_ntop_calculate_size(ldns_rdf_size(rdf) - 2);
char *b64 = LDNS_XMALLOC(char, size);
if(!b64)
return LDNS_STATUS_MEM_ERR;
ldns_buffer_printf(output, "%u ", ldns_rdf_size(rdf) - 2);
if (ldns_rdf_size(rdf) > 2 &&
ldns_b64_ntop(ldns_rdf_data(rdf) + 2,
ldns_rdf_size(rdf) - 2,
b64, size)) {
ldns_buffer_printf(output, "%s", b64);
}
LDNS_FREE(b64);
return ldns_buffer_status(output);
}
ldns_status
ldns_rdf2buffer_str_ipseckey(ldns_buffer *output, const ldns_rdf *rdf)
{
/* wire format from
http://www.ietf.org/internet-drafts/draft-ietf-ipseckey-rr-12.txt
*/
uint8_t *data = ldns_rdf_data(rdf);
uint8_t precedence;
uint8_t gateway_type;
uint8_t algorithm;
ldns_rdf *gateway = NULL;
uint8_t *gateway_data;
size_t public_key_size;
uint8_t *public_key_data;
ldns_rdf *public_key;
size_t offset = 0;
ldns_status status;
precedence = data[0];
gateway_type = data[1];
algorithm = data[2];
offset = 3;
switch (gateway_type) {
case 0:
/* no gateway */
break;
case 1:
gateway_data = LDNS_XMALLOC(uint8_t, LDNS_IP4ADDRLEN);
if(!gateway_data)
return LDNS_STATUS_MEM_ERR;
memcpy(gateway_data, &data[offset], LDNS_IP4ADDRLEN);
gateway = ldns_rdf_new(LDNS_RDF_TYPE_A, LDNS_IP4ADDRLEN , gateway_data);
offset += LDNS_IP4ADDRLEN;
if(!gateway) {
LDNS_FREE(gateway_data);
return LDNS_STATUS_MEM_ERR;
}
break;
case 2:
gateway_data = LDNS_XMALLOC(uint8_t, LDNS_IP6ADDRLEN);
if(!gateway_data)
return LDNS_STATUS_MEM_ERR;
memcpy(gateway_data, &data[offset], LDNS_IP6ADDRLEN);
offset += LDNS_IP6ADDRLEN;
gateway =
ldns_rdf_new(LDNS_RDF_TYPE_AAAA, LDNS_IP6ADDRLEN, gateway_data);