diff options
Diffstat (limited to 'lib/dns/rdata/generic/sshfp_44.c')
| -rw-r--r-- | lib/dns/rdata/generic/sshfp_44.c | 263 |
1 files changed, 263 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/sshfp_44.c b/lib/dns/rdata/generic/sshfp_44.c new file mode 100644 index 0000000..1b5d7ca --- /dev/null +++ b/lib/dns/rdata/generic/sshfp_44.c @@ -0,0 +1,263 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + + +/* RFC 4255 */ + +#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 == dns_rdatatype_sshfp); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(origin); + UNUSED(options); + UNUSED(callbacks); + + /* + * Algorithm. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + 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, + false)); + if (token.value.as_ulong > 0xffU) + RETTOK(ISC_R_RANGE); + RETERR(uint8_tobuffer(token.value.as_ulong, target)); + + /* + * 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 == dns_rdatatype_sshfp); + REQUIRE(rdata->length != 0); + + UNUSED(tctx); + + dns_rdata_toregion(rdata, &sr); + + /* + * Algorithm. + */ + n = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + snprintf(buf, sizeof(buf), "%u ", n); + RETERR(str_totext(buf, target)); + + /* + * Digest type. + */ + n = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + snprintf(buf, sizeof(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)); + if (tctx->width == 0) /* No splitting */ + RETERR(isc_hex_totext(&sr, 0, "", target)); + else + 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 == dns_rdatatype_sshfp); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(dctx); + UNUSED(options); + + 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 == dns_rdatatype_sshfp); + 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 == dns_rdatatype_sshfp); + 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 == dns_rdatatype_sshfp); + 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 == dns_rdatatype_sshfp); + 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, ®ion); + + sshfp->algorithm = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + sshfp->digest_type = uint8_fromregion(®ion); + isc_region_consume(®ion, 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 == dns_rdatatype_sshfp); + + 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 == dns_rdatatype_sshfp); + + 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 == dns_rdatatype_sshfp); + + dns_rdata_toregion(rdata, &r); + + return ((digest)(arg, &r)); +} + +static inline bool +checkowner_sshfp(ARGS_CHECKOWNER) { + + REQUIRE(type == dns_rdatatype_sshfp); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static inline bool +checknames_sshfp(ARGS_CHECKNAMES) { + + REQUIRE(rdata->type == dns_rdatatype_sshfp); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static inline int +casecompare_sshfp(ARGS_COMPARE) { + return (compare_sshfp(rdata1, rdata2)); +} + +#endif /* RDATA_GENERIC_SSHFP_44_C */ |