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Diffstat (limited to '')
| -rw-r--r-- | lib/dns/rdata/generic/caa_257.c | 627 |
1 files changed, 627 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/caa_257.c b/lib/dns/rdata/generic/caa_257.c new file mode 100644 index 0000000..0e6170b --- /dev/null +++ b/lib/dns/rdata/generic/caa_257.c @@ -0,0 +1,627 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * 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 https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +#ifndef GENERIC_CAA_257_C +#define GENERIC_CAA_257_C 1 + +#define RRTYPE_CAA_ATTRIBUTES (0) + +static unsigned char const alphanumeric[256] = { + /* 0x00-0x0f */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0x10-0x1f */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0x20-0x2f */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0x30-0x3f */ 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0x40-0x4f */ 0, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + /* 0x50-0x5f */ 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 0, + 0, + 0, + 0, + 0, + /* 0x60-0x6f */ 0, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + /* 0x70-0x7f */ 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 1, + 0, + 0, + 0, + 0, + 0, + /* 0x80-0x8f */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0x90-0x9f */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xa0-0xaf */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xb0-0xbf */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xc0-0xcf */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xd0-0xdf */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xe0-0xef */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + /* 0xf0-0xff */ 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, + 0, +}; + +static isc_result_t +fromtext_caa(ARGS_FROMTEXT) { + isc_token_t token; + isc_textregion_t tr; + uint8_t flags; + unsigned int i; + + REQUIRE(type == dns_rdatatype_caa); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(origin); + UNUSED(options); + UNUSED(callbacks); + + /* Flags. */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + false)); + if (token.value.as_ulong > 255U) { + RETTOK(ISC_R_RANGE); + } + flags = (uint8_t)(token.value.as_ulong & 255U); + RETERR(uint8_tobuffer(flags, target)); + + /* + * Tag + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, + false)); + tr = token.value.as_textregion; + for (i = 0; i < tr.length; i++) { + if (!alphanumeric[(unsigned char)tr.base[i]]) { + RETTOK(DNS_R_SYNTAX); + } + } + RETERR(uint8_tobuffer(tr.length, target)); + RETERR(mem_tobuffer(target, tr.base, tr.length)); + + /* + * Value + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring, + false)); + if (token.type != isc_tokentype_qstring && + token.type != isc_tokentype_string) + { + RETERR(DNS_R_SYNTAX); + } + RETERR(multitxt_fromtext(&token.value.as_textregion, target)); + return (ISC_R_SUCCESS); +} + +static isc_result_t +totext_caa(ARGS_TOTEXT) { + isc_region_t region; + uint8_t flags; + char buf[256]; + + UNUSED(tctx); + + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(rdata->length >= 3U); + REQUIRE(rdata->data != NULL); + + dns_rdata_toregion(rdata, ®ion); + + /* + * Flags + */ + flags = uint8_consume_fromregion(®ion); + snprintf(buf, sizeof(buf), "%u ", flags); + RETERR(str_totext(buf, target)); + + /* + * Tag + */ + RETERR(txt_totext(®ion, false, target)); + RETERR(str_totext(" ", target)); + + /* + * Value + */ + RETERR(multitxt_totext(®ion, target)); + return (ISC_R_SUCCESS); +} + +static isc_result_t +fromwire_caa(ARGS_FROMWIRE) { + isc_region_t sr; + unsigned int len, i; + + REQUIRE(type == dns_rdatatype_caa); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(dctx); + UNUSED(options); + + /* + * Flags + */ + isc_buffer_activeregion(source, &sr); + if (sr.length < 2) { + return (ISC_R_UNEXPECTEDEND); + } + + /* + * Flags, tag length + */ + RETERR(mem_tobuffer(target, sr.base, 2)); + len = sr.base[1]; + isc_region_consume(&sr, 2); + isc_buffer_forward(source, 2); + + /* + * Zero length tag fields are illegal. + */ + if (sr.length < len || len == 0) { + RETERR(DNS_R_FORMERR); + } + + /* Check the Tag's value */ + for (i = 0; i < len; i++) { + if (!alphanumeric[sr.base[i]]) { + RETERR(DNS_R_FORMERR); + /* + * Tag + Value + */ + } + } + /* + * Tag + Value + */ + isc_buffer_forward(source, sr.length); + return (mem_tobuffer(target, sr.base, sr.length)); +} + +static isc_result_t +towire_caa(ARGS_TOWIRE) { + isc_region_t region; + + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(rdata->length >= 3U); + REQUIRE(rdata->data != NULL); + + UNUSED(cctx); + + dns_rdata_toregion(rdata, ®ion); + return (mem_tobuffer(target, region.base, region.length)); +} + +static int +compare_caa(ARGS_COMPARE) { + isc_region_t r1, r2; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == dns_rdatatype_caa); + REQUIRE(rdata1->length >= 3U); + REQUIRE(rdata2->length >= 3U); + REQUIRE(rdata1->data != NULL); + REQUIRE(rdata2->data != NULL); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + return (isc_region_compare(&r1, &r2)); +} + +static isc_result_t +fromstruct_caa(ARGS_FROMSTRUCT) { + dns_rdata_caa_t *caa = source; + isc_region_t region; + unsigned int i; + + REQUIRE(type == dns_rdatatype_caa); + REQUIRE(caa != NULL); + REQUIRE(caa->common.rdtype == type); + REQUIRE(caa->common.rdclass == rdclass); + REQUIRE(caa->tag != NULL && caa->tag_len != 0); + REQUIRE(caa->value != NULL); + + UNUSED(type); + UNUSED(rdclass); + + /* + * Flags + */ + RETERR(uint8_tobuffer(caa->flags, target)); + + /* + * Tag length + */ + RETERR(uint8_tobuffer(caa->tag_len, target)); + + /* + * Tag + */ + region.base = caa->tag; + region.length = caa->tag_len; + for (i = 0; i < region.length; i++) { + if (!alphanumeric[region.base[i]]) { + RETERR(DNS_R_SYNTAX); + } + } + RETERR(isc_buffer_copyregion(target, ®ion)); + + /* + * Value + */ + region.base = caa->value; + region.length = caa->value_len; + return (isc_buffer_copyregion(target, ®ion)); +} + +static isc_result_t +tostruct_caa(ARGS_TOSTRUCT) { + dns_rdata_caa_t *caa = target; + isc_region_t sr; + + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(caa != NULL); + REQUIRE(rdata->length >= 3U); + REQUIRE(rdata->data != NULL); + + caa->common.rdclass = rdata->rdclass; + caa->common.rdtype = rdata->type; + ISC_LINK_INIT(&caa->common, link); + + dns_rdata_toregion(rdata, &sr); + + /* + * Flags + */ + if (sr.length < 1) { + return (ISC_R_UNEXPECTEDEND); + } + caa->flags = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + + /* + * Tag length + */ + if (sr.length < 1) { + return (ISC_R_UNEXPECTEDEND); + } + caa->tag_len = uint8_fromregion(&sr); + isc_region_consume(&sr, 1); + + /* + * Tag + */ + if (sr.length < caa->tag_len) { + return (ISC_R_UNEXPECTEDEND); + } + caa->tag = mem_maybedup(mctx, sr.base, caa->tag_len); + if (caa->tag == NULL) { + return (ISC_R_NOMEMORY); + } + isc_region_consume(&sr, caa->tag_len); + + /* + * Value + */ + caa->value_len = sr.length; + caa->value = mem_maybedup(mctx, sr.base, sr.length); + if (caa->value == NULL) { + return (ISC_R_NOMEMORY); + } + + caa->mctx = mctx; + return (ISC_R_SUCCESS); +} + +static void +freestruct_caa(ARGS_FREESTRUCT) { + dns_rdata_caa_t *caa = (dns_rdata_caa_t *)source; + + REQUIRE(caa != NULL); + REQUIRE(caa->common.rdtype == dns_rdatatype_caa); + + if (caa->mctx == NULL) { + return; + } + + if (caa->tag != NULL) { + isc_mem_free(caa->mctx, caa->tag); + } + if (caa->value != NULL) { + isc_mem_free(caa->mctx, caa->value); + } + caa->mctx = NULL; +} + +static isc_result_t +additionaldata_caa(ARGS_ADDLDATA) { + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(rdata->data != NULL); + REQUIRE(rdata->length >= 3U); + + UNUSED(rdata); + UNUSED(add); + UNUSED(arg); + + return (ISC_R_SUCCESS); +} + +static isc_result_t +digest_caa(ARGS_DIGEST) { + isc_region_t r; + + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(rdata->data != NULL); + REQUIRE(rdata->length >= 3U); + + dns_rdata_toregion(rdata, &r); + + return ((digest)(arg, &r)); +} + +static bool +checkowner_caa(ARGS_CHECKOWNER) { + REQUIRE(type == dns_rdatatype_caa); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static bool +checknames_caa(ARGS_CHECKNAMES) { + REQUIRE(rdata->type == dns_rdatatype_caa); + REQUIRE(rdata->data != NULL); + REQUIRE(rdata->length >= 3U); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static int +casecompare_caa(ARGS_COMPARE) { + return (compare_caa(rdata1, rdata2)); +} + +#endif /* GENERIC_CAA_257_C */ |