Commit 901b5fb3 authored by Mark Andrews's avatar Mark Andrews
Browse files

Initial Implementation.

parent a48fa4b4
/*
* Copyright (C) 1999 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* $Id: a6_38.c,v 1.1 1999/02/02 04:52:31 marka Exp $ */
/* draft-ietf-ipngwg-dns-lookups-03.txt */
#ifndef RDATA_IN_1_A6_28_H
#define RDATA_IN_1_A6_28_H
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <isc/inet.h>
#ifndef MAX
#define MAX(A, B) ((A > B) ? (A) : (B))
#endif
static dns_result_t
fromtext_in_a6(dns_rdataclass_t class, dns_rdatatype_t type,
isc_lex_t *lexer, dns_name_t *origin,
isc_boolean_t downcase, isc_buffer_t *target)
{
isc_token_t token;
unsigned char addr[16];
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
dns_name_t name;
isc_buffer_t buffer;
REQUIRE(type == 38);
REQUIRE(class == 1);
/* prefix length */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 128)
return (DNS_R_RANGE);
prefixlen = token.value.as_ulong;
RETERR(mem_tobuffer(target, &prefixlen, 1));
/* suffix */
if (prefixlen != 128) {
/* prefix 0..127 */
octets = prefixlen/8;
/* octets 0..15 */
RETERR(gettoken(lexer, &token, isc_tokentype_string,
ISC_FALSE));
if (isc_inet_pton(AF_INET6, token.value.as_pointer, &addr) != 1)
return (DNS_R_UNEXPECTED);
mask = 0xff >> (prefixlen % 8);
addr[octets] &= mask;
RETERR(mem_tobuffer(target, &addr[octets], 16 - octets));
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
dns_name_init(&name, NULL);
buffer_fromregion(&buffer, &token.value.as_region,
ISC_BUFFERTYPE_TEXT);
origin = (origin != NULL) ? origin : dns_rootname;
return (dns_name_fromtext(&name, &buffer, origin, downcase, target));
}
static dns_result_t
totext_in_a6(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
isc_region_t tr;
isc_region_t sr;
unsigned char addr[16];
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
char buf[sizeof "128"];
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
dns_rdata_toregion(rdata, &sr);
prefixlen = sr.base[0];
INSIST(prefixlen <= 128);
isc_region_consume(&sr, 1);
sprintf(buf, "%u", prefixlen);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
if (prefixlen != 128) {
octets = prefixlen/8;
memset(&addr, 0, sizeof addr);
memcpy(&addr[octets], sr.base, 16 - octets);
mask = 0xff >> (prefixlen % 8);
addr[octets] &= mask;
isc_buffer_available(target, &tr);
if (isc_inet_ntop(AF_INET6, &addr,
(char *)tr.base, tr.length) == NULL)
return (DNS_R_NOSPACE);
isc_buffer_add(target, strlen((char *)tr.base));
isc_region_consume(&sr, 16 - octets);
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
RETERR(str_totext(" ", target));
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_name_fromregion(&name, &sr);
sub = name_prefix(&name, origin, &prefix);
return(dns_name_totext(&prefix, sub, target));
}
static dns_result_t
fromwire_in_a6(dns_rdataclass_t class, dns_rdatatype_t type,
isc_buffer_t *source, dns_decompress_t *dctx,
isc_boolean_t downcase, isc_buffer_t *target) {
isc_region_t sr;
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
dns_name_t name;
REQUIRE(type == 38);
REQUIRE(class == 1);
isc_buffer_active(source, &sr);
/* prefix length */
if (sr.length < 1)
return (DNS_R_UNEXPECTEDEND);
prefixlen = sr.base[0];
if (prefixlen > 128)
return (DNS_R_RANGE);
isc_region_consume(&sr, 1);
RETERR(mem_tobuffer(target, &prefixlen, 1));
isc_buffer_forward(source, 1);
/* suffix */
if (prefixlen != 128) {
octets = 16 - prefixlen / 8;
if (sr.length < octets)
return (DNS_R_UNEXPECTEDEND);
mask = 0xff >> (prefixlen % 8);
sr.base[0] &= mask; /* ensure pad bits are zero */
RETERR(mem_tobuffer(target, sr.base, octets));
isc_buffer_forward(source, octets);
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
dns_name_init(&name, NULL);
return (dns_name_fromwire(&name, source, dctx, downcase, target));
}
static dns_result_t
towire_in_a6(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
isc_region_t sr;
dns_name_t name;
unsigned char prefixlen;
unsigned char octets;
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
dns_rdata_toregion(rdata, &sr);
prefixlen = sr.base[0];
INSIST(prefixlen <= 128);
octets = 1 + 16 - prefixlen / 8;
RETERR(mem_tobuffer(target, sr.base, octets));
isc_region_consume(&sr, octets);
if (prefixlen == 0)
return (DNS_R_SUCCESS);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &sr);
return (dns_name_towire(&name, cctx, target));
}
static int
compare_in_a6(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
int result;
unsigned char prefixlen;
unsigned char octets;
dns_name_t name1;
dns_name_t name2;
isc_region_t region1;
isc_region_t region2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->class == rdata2->class);
REQUIRE(rdata1->type == 38);
REQUIRE(rdata1->class == 1);
dns_rdata_toregion(rdata1, &region1);
dns_rdata_toregion(rdata2, &region2);
prefixlen = MAX(region1.base[0], region2.base[0]);
octets = 1 + 16 - prefixlen / 8;
result = memcmp(region1.base, region2.base, octets);
if (result != 0)
result = (result < 0) ? -1 : 1;
isc_region_consume(&region1, octets);
isc_region_consume(&region2, octets);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_name_fromregion(&name1, &region1);
dns_name_fromregion(&name2, &region2);
return (dns_name_compare(&name1, &name2));
}
static dns_result_t
fromstruct_in_a6(dns_rdataclass_t class, dns_rdatatype_t type, void *source,
isc_buffer_t *target) {
REQUIRE(type == 1);
REQUIRE(class == 1);
source = source;
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
static dns_result_t
tostruct_in_a6(dns_rdata_t *rdata, void *target) {
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
#endif /* RDATA_IN_1_A6_38_H */
/*
* Copyright (C) 1999 Internet Software Consortium.
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
* SOFTWARE.
*/
/* $Id: a6_38.h,v 1.1 1999/02/02 04:52:31 marka Exp $ */
/* draft-ietf-ipngwg-dns-lookups-03.txt */
#ifndef RDATA_IN_1_A6_28_H
#define RDATA_IN_1_A6_28_H
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <isc/inet.h>
#ifndef MAX
#define MAX(A, B) ((A > B) ? (A) : (B))
#endif
static dns_result_t
fromtext_in_a6(dns_rdataclass_t class, dns_rdatatype_t type,
isc_lex_t *lexer, dns_name_t *origin,
isc_boolean_t downcase, isc_buffer_t *target)
{
isc_token_t token;
unsigned char addr[16];
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
dns_name_t name;
isc_buffer_t buffer;
REQUIRE(type == 38);
REQUIRE(class == 1);
/* prefix length */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 128)
return (DNS_R_RANGE);
prefixlen = token.value.as_ulong;
RETERR(mem_tobuffer(target, &prefixlen, 1));
/* suffix */
if (prefixlen != 128) {
/* prefix 0..127 */
octets = prefixlen/8;
/* octets 0..15 */
RETERR(gettoken(lexer, &token, isc_tokentype_string,
ISC_FALSE));
if (isc_inet_pton(AF_INET6, token.value.as_pointer, &addr) != 1)
return (DNS_R_UNEXPECTED);
mask = 0xff >> (prefixlen % 8);
addr[octets] &= mask;
RETERR(mem_tobuffer(target, &addr[octets], 16 - octets));
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
dns_name_init(&name, NULL);
buffer_fromregion(&buffer, &token.value.as_region,
ISC_BUFFERTYPE_TEXT);
origin = (origin != NULL) ? origin : dns_rootname;
return (dns_name_fromtext(&name, &buffer, origin, downcase, target));
}
static dns_result_t
totext_in_a6(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
isc_region_t tr;
isc_region_t sr;
unsigned char addr[16];
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
char buf[sizeof "128"];
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
dns_rdata_toregion(rdata, &sr);
prefixlen = sr.base[0];
INSIST(prefixlen <= 128);
isc_region_consume(&sr, 1);
sprintf(buf, "%u", prefixlen);
RETERR(str_totext(buf, target));
RETERR(str_totext(" ", target));
if (prefixlen != 128) {
octets = prefixlen/8;
memset(&addr, 0, sizeof addr);
memcpy(&addr[octets], sr.base, 16 - octets);
mask = 0xff >> (prefixlen % 8);
addr[octets] &= mask;
isc_buffer_available(target, &tr);
if (isc_inet_ntop(AF_INET6, &addr,
(char *)tr.base, tr.length) == NULL)
return (DNS_R_NOSPACE);
isc_buffer_add(target, strlen((char *)tr.base));
isc_region_consume(&sr, 16 - octets);
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
RETERR(str_totext(" ", target));
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_name_fromregion(&name, &sr);
sub = name_prefix(&name, origin, &prefix);
return(dns_name_totext(&prefix, sub, target));
}
static dns_result_t
fromwire_in_a6(dns_rdataclass_t class, dns_rdatatype_t type,
isc_buffer_t *source, dns_decompress_t *dctx,
isc_boolean_t downcase, isc_buffer_t *target) {
isc_region_t sr;
unsigned char prefixlen;
unsigned char octets;
unsigned char mask;
dns_name_t name;
REQUIRE(type == 38);
REQUIRE(class == 1);
isc_buffer_active(source, &sr);
/* prefix length */
if (sr.length < 1)
return (DNS_R_UNEXPECTEDEND);
prefixlen = sr.base[0];
if (prefixlen > 128)
return (DNS_R_RANGE);
isc_region_consume(&sr, 1);
RETERR(mem_tobuffer(target, &prefixlen, 1));
isc_buffer_forward(source, 1);
/* suffix */
if (prefixlen != 128) {
octets = 16 - prefixlen / 8;
if (sr.length < octets)
return (DNS_R_UNEXPECTEDEND);
mask = 0xff >> (prefixlen % 8);
sr.base[0] &= mask; /* ensure pad bits are zero */
RETERR(mem_tobuffer(target, sr.base, octets));
isc_buffer_forward(source, octets);
}
if (prefixlen == 0)
return (DNS_R_SUCCESS);
dns_name_init(&name, NULL);
return (dns_name_fromwire(&name, source, dctx, downcase, target));
}
static dns_result_t
towire_in_a6(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
isc_region_t sr;
dns_name_t name;
unsigned char prefixlen;
unsigned char octets;
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
dns_rdata_toregion(rdata, &sr);
prefixlen = sr.base[0];
INSIST(prefixlen <= 128);
octets = 1 + 16 - prefixlen / 8;
RETERR(mem_tobuffer(target, sr.base, octets));
isc_region_consume(&sr, octets);
if (prefixlen == 0)
return (DNS_R_SUCCESS);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &sr);
return (dns_name_towire(&name, cctx, target));
}
static int
compare_in_a6(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
int result;
unsigned char prefixlen;
unsigned char octets;
dns_name_t name1;
dns_name_t name2;
isc_region_t region1;
isc_region_t region2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->class == rdata2->class);
REQUIRE(rdata1->type == 38);
REQUIRE(rdata1->class == 1);
dns_rdata_toregion(rdata1, &region1);
dns_rdata_toregion(rdata2, &region2);
prefixlen = MAX(region1.base[0], region2.base[0]);
octets = 1 + 16 - prefixlen / 8;
result = memcmp(region1.base, region2.base, octets);
if (result != 0)
result = (result < 0) ? -1 : 1;
isc_region_consume(&region1, octets);
isc_region_consume(&region2, octets);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_name_fromregion(&name1, &region1);
dns_name_fromregion(&name2, &region2);
return (dns_name_compare(&name1, &name2));
}
static dns_result_t
fromstruct_in_a6(dns_rdataclass_t class, dns_rdatatype_t type, void *source,
isc_buffer_t *target) {
REQUIRE(type == 1);
REQUIRE(class == 1);
source = source;
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
static dns_result_t
tostruct_in_a6(dns_rdata_t *rdata, void *target) {
REQUIRE(rdata->type == 38);
REQUIRE(rdata->class == 1);
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
#endif /* RDATA_IN_1_A6_38_H */
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