tkey_249.c revision fad44a20eede1bbc66716241dede225500c91caa
/*
* 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: tkey_249.c,v 1.12 1999/06/08 20:41:31 gson Exp $ */
/* draft-ietf-dnssec-tkey-01.txt */
#ifndef RDATA_GENERIC_TKEY_249_C
#define RDATA_GENERIC_TKEY_249_C
static dns_result_t
fromtext_tkey(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_rcode_t rcode;
dns_name_t name;
isc_buffer_t buffer;
char *e;
REQUIRE(type == 249);
class = class; /*unused*/
/* Algorithm */
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));
/* Inception */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
RETERR(uint32_tobuffer(token.value.as_ulong, target));
/* Expiration */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
RETERR(uint32_tobuffer(token.value.as_ulong, target));
/* Mode */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (DNS_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/* Error */
RETERR(gettoken(lexer, &token, isc_tokentype_string, ISC_FALSE));
if (dns_rcode_fromtext(&rcode, &token.value.as_textregion)
!= DNS_R_SUCCESS) {
rcode = strtol(token.value.as_pointer, &e, 10);
if (*e != 0)
return (DNS_R_UNKNOWN);
if (rcode > 0xffff)
return (DNS_R_RANGE);
}
RETERR(uint16_tobuffer(rcode, target));
/* Signature Size */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (DNS_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/* Signature */
RETERR(isc_base64_tobuffer(lexer, target, token.value.as_ulong));
/* Other Len */
RETERR(gettoken(lexer, &token, isc_tokentype_number, ISC_FALSE));
if (token.value.as_ulong > 0xffff)
return (DNS_R_RANGE);
RETERR(uint16_tobuffer(token.value.as_ulong, target));
/* Other Data */
return (isc_base64_tobuffer(lexer, target, token.value.as_ulong));
}
static dns_result_t
totext_tkey(dns_rdata_t *rdata, dns_rdata_textctx_t *tctx,
isc_buffer_t *target)
{
isc_region_t sr;
isc_region_t sigr;
char buf[sizeof "4294967295 "];
unsigned long n;
dns_name_t name;
dns_name_t prefix;
isc_boolean_t sub;
REQUIRE(rdata->type == 249);
dns_rdata_toregion(rdata, &sr);
/* Algorithm */
dns_name_init(&name, NULL);
dns_name_init(&prefix, NULL);
dns_name_fromregion(&name, &sr);
sub = name_prefix(&name, tctx->origin, &prefix);
RETERR(dns_name_totext(&prefix, sub, target));
RETERR(str_totext(" ", target));
isc_region_consume(&sr, name_length(&name));
/* Inception */
n = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
sprintf(buf, "%lu ", n);
RETERR(str_totext(buf, target));
/* Expiration */
n = uint32_fromregion(&sr);
isc_region_consume(&sr, 4);
sprintf(buf, "%lu ", n);
RETERR(str_totext(buf, target));
/* Mode */
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%lu ", n);
RETERR(str_totext(buf, target));
/* Error */
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
if (dns_rcode_totext(n, target) == DNS_R_SUCCESS)
RETERR(str_totext(" ", target));
else {
sprintf(buf, "%lu ", n);
RETERR(str_totext(buf, target));
}
/* Signature Size */
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%lu", n);
RETERR(str_totext(buf, target));
/* Signature */
REQUIRE(n <= sr.length);
sigr = sr;
sigr.length = n;
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
RETERR(isc_base64_totext(&sigr, tctx->width - 2,
tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" ) ", target));
else
RETERR(str_totext(" ", target));
isc_region_consume(&sr, n);
/* Other Size */
n = uint16_fromregion(&sr);
isc_region_consume(&sr, 2);
sprintf(buf, "%lu ", n);
RETERR(str_totext(buf, target));
/* Other */
return (isc_base64_totext(&sr, 60, " ", target));
}
static dns_result_t
fromwire_tkey(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 long n;
dns_name_t name;
REQUIRE(type == 249);
class = class; /*unused*/
if (dns_decompress_edns(dctx) >= 1 || !dns_decompress_strict(dctx))
dns_decompress_setmethods(dctx, DNS_COMPRESS_ALL);
else
dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
/* Algorithm */
dns_name_init(&name, NULL);
RETERR(dns_name_fromwire(&name, source, dctx, downcase, target));
/*
* Inception: 4
* Expiration: 4
* Mode: 2
* Error: 2
*/
isc_buffer_active(source, &sr);
if (sr.length < 12)
return (DNS_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sr.base, 12));
isc_region_consume(&sr, 12);
isc_buffer_forward(source, 12);
/* Signature Length + Signature */
if (sr.length < 2)
return (DNS_R_UNEXPECTEDEND);
n = uint16_fromregion(&sr);
if (sr.length < n + 2)
return (DNS_R_UNEXPECTEDEND);
RETERR(mem_tobuffer(target, sr.base, n + 2));
isc_region_consume(&sr, n + 2);
isc_buffer_forward(source, n + 2);
/* Other Length + Other */
if (sr.length < 2)
return (DNS_R_UNEXPECTEDEND);
n = uint16_fromregion(&sr);
if (sr.length < n + 2)
return (DNS_R_UNEXPECTEDEND);
isc_buffer_forward(source, n + 2);
return (mem_tobuffer(target, sr.base, n + 2));
}
static dns_result_t
towire_tkey(dns_rdata_t *rdata, dns_compress_t *cctx, isc_buffer_t *target) {
isc_region_t sr;
dns_name_t name;
REQUIRE(rdata->type == 249);
if (dns_compress_getedns(cctx) >= 1)
dns_compress_setmethods(cctx, DNS_COMPRESS_ALL);
else
dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
/* Algorithm */
dns_rdata_toregion(rdata, &sr);
dns_name_init(&name, NULL);
dns_name_fromregion(&name, &sr);
RETERR(dns_name_towire(&name, cctx, target));
isc_region_consume(&sr, name_length(&name));
return (mem_tobuffer(target, sr.base, sr.length));
}
static int
compare_tkey(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 == 249);
/* Algorithm */
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
dns_name_init(&name1, NULL);
dns_name_init(&name2, NULL);
dns_name_fromregion(&name1, &r1);
dns_name_fromregion(&name2, &r2);
if ((result = dns_name_rdatacompare(&name1, &name2)) != 0)
return (result);
isc_region_consume(&r1, name_length(&name1));
isc_region_consume(&r2, name_length(&name2));
return (compare_region(&r1, &r2));
}
static dns_result_t
fromstruct_tkey(dns_rdataclass_t class, dns_rdatatype_t type,
void *source, isc_buffer_t *target) {
REQUIRE(type == 249);
class = class; /*unused*/
source = source;
target = target;
return (DNS_R_NOTIMPLEMENTED);
}
static dns_result_t
tostruct_tkey(dns_rdata_t *rdata, void *target, isc_mem_t *mctx) {
REQUIRE(rdata->type == 249);
target = target;
mctx = mctx;
return (DNS_R_NOTIMPLEMENTED);
}
static void
freestruct_tkey(void *source) {
REQUIRE(source != NULL);
REQUIRE(ISC_FALSE); /*XXX*/
}
#endif /* RDATA_GENERIC_TKEY_249_C */