nxt_30.c revision 8d3e74b1683f714a484bbcf73249e8ee470e36d7
/*
* 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: nxt_30.c,v 1.3 1999/02/04 06:38:43 marka Exp $ */
/* RFC 2065 */
#ifndef RDATA_GENERIC_NXT_30_H
#define RDATA_GENERIC_NXT_30_H
static dns_result_t
fromtext_nxt(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;
dns_name_t name;
isc_buffer_t buffer;
char *e;
unsigned char bm[8*1024]; /* 64k bits */
dns_rdatatype_t covered;
dns_rdatatype_t maxcovered = dns_rdatatype_none;
isc_boolean_t first = ISC_TRUE;
unsigned int n;
REQUIRE(type == 30);
class = class; /*unused*/
/* next domain */
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;
RETERR(dns_name_fromtext(&name, &buffer, origin, downcase, target));
memset(bm, 0, sizeof bm);
while (1) {
RETERR(gettoken(lexer, &token, isc_tokentype_string,
ISC_TRUE));
if (token.type != isc_tokentype_string)
break;
covered = strtol(token.value.as_pointer, &e, 10);
if (*e == 0)
(void) NULL;
else if (dns_rdatatype_fromtext(&covered,
&token.value.as_textregion) == DNS_R_UNKNOWN)
return (DNS_R_UNKNOWN);
if (first || covered > maxcovered)
maxcovered = covered;
first = ISC_FALSE;
bm[covered/8] |= (0x80>>(covered%8));
}
isc_lex_ungettoken(lexer, &token);
if (first)
return (DNS_R_SUCCESS);
n = (maxcovered + 8) / 8;
return (mem_tobuffer(target, bm, n));
}
static dns_result_t
totext_nxt(dns_rdata_t *rdata, dns_name_t *origin, isc_buffer_t *target) {
isc_region_t sr;
char buf[sizeof "65535"];
unsigned int i, j;
dns_name_t name;
dns_name_t prefix;
dns_result_t result;
isc_boolean_t sub;
REQUIRE(rdata->type == 30);
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_rdata_toregion(rdata, &sr);
dns_name_fromregion(&name, &sr);
isc_region_consume(&sr, name_length(&name));
sub = name_prefix(&name, origin, &prefix);
RETERR(dns_name_totext(&prefix, sub, target));
RETERR(str_totext(" ( ", target));
for (i = 0 ; i < sr.length ; i++) {
if (sr.base[i] != 0)
for (j = 0; j < 8; j++)
if ((sr.base[i] & (0x80>>j)) != 0) {
result = dns_rdatatype_totext(
i * 8 + j, target);
if (result == DNS_R_SUCCESS) {
RETERR(str_totext(" ",
target));
continue;
}
if (result != DNS_R_UNKNOWN)
return (result);
sprintf(buf, "%u", i * 8 + j);
RETERR(str_totext(" ", target));
RETERR(str_totext(buf, target));
}
}
return (str_totext(")", target));
}
static dns_result_t
fromwire_nxt(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;
dns_name_t name;
REQUIRE(type == 30);
class = class; /*unused*/
dns_name_init(&name, NULL);
RETERR(dns_name_fromwire(&name, source, dctx, downcase, target));
isc_buffer_active(source, &sr);
if (sr.length > 8 * 1024)
return (DNS_R_EXTRADATA);
RETERR(mem_tobuffer(target, sr.base, sr.length));
isc_buffer_forward(source, sr.length);
return (DNS_R_SUCCESS);
}
static dns_result_t
towire_nxt(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
isc_region_t sr;
dns_name_t name;
REQUIRE(rdata->type == 30);
dns_name_init(&name, NULL);
dns_rdata_toregion(rdata, &sr);
dns_name_fromregion(&name, &sr);
isc_region_consume(&sr, name_length(&name));
RETERR(dns_name_towire(&name, cctx, target));
return (mem_tobuffer(target, sr.base, sr.length));
}
static int
compare_nxt(dns_rdata_t *rdata1, dns_rdata_t *rdata2) {
isc_region_t r1;
isc_region_t r2;
dns_name_t name1;
dns_name_t name2;
int result;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->class == rdata2->class);
REQUIRE(rdata1->type == 30);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
dns_name_fromregion(&name1, &r1);
dns_name_fromregion(&name2, &r2);
result = dns_name_compare(&name1, &name2);
if (result != 0)
return (result);
return (compare_region(&r1, &r2));
}
static dns_result_t
fromstruct_nxt(dns_rdataclass_t class, dns_rdatatype_t type, void *source,
isc_buffer_t *target) {
REQUIRE(type == 30);
class = class; /*unused*/
source = source;
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
static dns_result_t
tostruct_nxt(dns_rdata_t *rdata, void *target) {
REQUIRE(rdata->type == 30);
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
#endif /* RDATA_GENERIC_NXT_30_H */