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1520. [protocol] Add SSHFP (SSH Finger Print) type.

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Supplied by Jakob Schlyter jakob@rfc.se.
This commit is contained in:
Mark Andrews
2003-10-01 10:05:00 +00:00
parent 94be8e357c
commit 89639a5e13
3 changed files with 273 additions and 0 deletions
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2
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1520. [protocol] Add SSHFP (SSH Finger Print) type.
1519. [bug] dnssec-signzone:nsec_setbit() computed the wrong
length of the new bitmap.

237
lib/dns/rdata/generic/sshfp_44.c Normal file
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/*
* Copyright (C) 1999-2003 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: sshfp_44.c,v 1.1 2003/10/01 10:05:00 marka Exp $ */
/* draft-ietf-secsh-dns-05.txt */
#ifndef RDATA_GENERIC_SSHFP_44_C
#define RDATA_GENERIC_SSHFP_44_C
#define RRTYPE_SSHFP_ATTRIBUTES (0)
static inline isc_result_t
fromtext_sshfp(ARGS_FROMTEXT) {
isc_token_t token;
REQUIRE(type == 44);
UNUSED(type);
UNUSED(rdclass);
UNUSED(origin);
UNUSED(downcase);
UNUSED(callbacks);
/*
* Algorithm.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
ISC_FALSE));
if (token.value.as_ulong > 0xffU)
RETTOK(ISC_R_RANGE);
RETERR(uint8_tobuffer(token.value.as_ulong, target));
/*
* Digest type.
*/
RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
ISC_FALSE));
if (token.value.as_ulong > 0xffU)
RETTOK(ISC_R_RANGE);
RETERR(uint8_tobuffer(token.value.as_ulong, target));
type = (isc_uint16_t) token.value.as_ulong;
/*
* Digest.
*/
return (isc_hex_tobuffer(lexer, target, -1));
}
static inline isc_result_t
totext_sshfp(ARGS_TOTEXT) {
isc_region_t sr;
char buf[sizeof("64000 ")];
unsigned int n;
REQUIRE(rdata->type == 44);
REQUIRE(rdata->length != 0);
UNUSED(tctx);
dns_rdata_toregion(rdata, &sr);
/*
* Algorithm.
*/
n = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
sprintf(buf, "%u ", n);
RETERR(str_totext(buf, target));
/*
* Digest type.
*/
n = uint8_fromregion(&sr);
isc_region_consume(&sr, 1);
sprintf(buf, "%u", n);
RETERR(str_totext(buf, target));
/*
* Digest.
*/
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" (", target));
RETERR(str_totext(tctx->linebreak, target));
RETERR(isc_hex_totext(&sr, tctx->width - 2, tctx->linebreak, target));
if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
RETERR(str_totext(" )", target));
return (ISC_R_SUCCESS);
}
static inline isc_result_t
fromwire_sshfp(ARGS_FROMWIRE) {
isc_region_t sr;
REQUIRE(type == 44);
UNUSED(type);
UNUSED(rdclass);
UNUSED(dctx);
UNUSED(downcase);
isc_buffer_activeregion(source, &sr);
if (sr.length < 4)
return (ISC_R_UNEXPECTEDEND);
isc_buffer_forward(source, sr.length);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline isc_result_t
towire_sshfp(ARGS_TOWIRE) {
isc_region_t sr;
REQUIRE(rdata->type == 44);
REQUIRE(rdata->length != 0);
UNUSED(cctx);
dns_rdata_toregion(rdata, &sr);
return (mem_tobuffer(target, sr.base, sr.length));
}
static inline int
compare_sshfp(ARGS_COMPARE) {
isc_region_t r1;
isc_region_t r2;
REQUIRE(rdata1->type == rdata2->type);
REQUIRE(rdata1->rdclass == rdata2->rdclass);
REQUIRE(rdata1->type == 44);
REQUIRE(rdata1->length != 0);
REQUIRE(rdata2->length != 0);
dns_rdata_toregion(rdata1, &r1);
dns_rdata_toregion(rdata2, &r2);
return (isc_region_compare(&r1, &r2));
}
static inline isc_result_t
fromstruct_sshfp(ARGS_FROMSTRUCT) {
dns_rdata_sshfp_t *sshfp = source;
REQUIRE(type == 44);
REQUIRE(source != NULL);
REQUIRE(sshfp->common.rdtype == type);
REQUIRE(sshfp->common.rdclass == rdclass);
UNUSED(type);
UNUSED(rdclass);
RETERR(uint8_tobuffer(sshfp->algorithm, target));
RETERR(uint8_tobuffer(sshfp->digest_type, target));
return (mem_tobuffer(target, sshfp->digest, sshfp->length));
}
static inline isc_result_t
tostruct_sshfp(ARGS_TOSTRUCT) {
dns_rdata_sshfp_t *sshfp = target;
isc_region_t region;
REQUIRE(rdata->type == 44);
REQUIRE(target != NULL);
REQUIRE(rdata->length != 0);
sshfp->common.rdclass = rdata->rdclass;
sshfp->common.rdtype = rdata->type;
ISC_LINK_INIT(&sshfp->common, link);
dns_rdata_toregion(rdata, &region);
sshfp->algorithm = uint8_fromregion(&region);
isc_region_consume(&region, 1);
sshfp->digest_type = uint8_fromregion(&region);
isc_region_consume(&region, 1);
sshfp->length = region.length;
sshfp->digest = mem_maybedup(mctx, region.base, region.length);
if (sshfp->digest == NULL)
return (ISC_R_NOMEMORY);
sshfp->mctx = mctx;
return (ISC_R_SUCCESS);
}
static inline void
freestruct_sshfp(ARGS_FREESTRUCT) {
dns_rdata_sshfp_t *sshfp = source;
REQUIRE(sshfp != NULL);
REQUIRE(sshfp->common.rdtype == 44);
if (sshfp->mctx == NULL)
return;
if (sshfp->digest != NULL)
isc_mem_free(sshfp->mctx, sshfp->digest);
sshfp->mctx = NULL;
}
static inline isc_result_t
additionaldata_sshfp(ARGS_ADDLDATA) {
REQUIRE(rdata->type == 44);
UNUSED(rdata);
UNUSED(add);
UNUSED(arg);
return (ISC_R_SUCCESS);
}
static inline isc_result_t
digest_sshfp(ARGS_DIGEST) {
isc_region_t r;
REQUIRE(rdata->type == 44);
dns_rdata_toregion(rdata, &r);
return ((digest)(arg, &r));
}
#endif /* RDATA_GENERIC_SSHFP_44_C */

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lib/dns/rdata/generic/sshfp_44.h Normal file
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/*
* Copyright (C) 1999-2003 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: sshfp_44.h,v 1.1 2003/10/01 10:05:00 marka Exp $ */
/* draft-ietf-secsh-dns-05.txt */
#ifndef GENERIC_SSHFP_44_H
#define GENERIC_SSHFP_44_H 1
typedef struct dns_rdata_sshfp {
dns_rdatacommon_t common;
isc_mem_t *mctx;
isc_uint8_t algorithm;
isc_uint8_t digest_type;
isc_uint16_t length;
unsigned char *digest;
} dns_rdata_sshfp_t;
#endif /* GENERIC_SSHFP_44_H */