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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 07:24:22 +0000 |
commit | 45d6379135504814ab723b57f0eb8be23393a51d (patch) | |
tree | d4f2ec4acca824a8446387a758b0ce4238a4dffa /lib/dns/rdata/generic/txt_16.c | |
parent | Initial commit. (diff) | |
download | bind9-upstream/1%9.16.44.tar.xz bind9-upstream/1%9.16.44.zip |
Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'lib/dns/rdata/generic/txt_16.c')
-rw-r--r-- | lib/dns/rdata/generic/txt_16.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/txt_16.c b/lib/dns/rdata/generic/txt_16.c new file mode 100644 index 0000000..c4d338b --- /dev/null +++ b/lib/dns/rdata/generic/txt_16.c @@ -0,0 +1,359 @@ +/* + * 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 RDATA_GENERIC_TXT_16_C +#define RDATA_GENERIC_TXT_16_C + +#define RRTYPE_TXT_ATTRIBUTES (0) + +static isc_result_t +generic_fromtext_txt(ARGS_FROMTEXT) { + isc_token_t token; + int strings; + + UNUSED(type); + UNUSED(rdclass); + UNUSED(origin); + UNUSED(options); + UNUSED(callbacks); + + strings = 0; + if ((options & DNS_RDATA_UNKNOWNESCAPE) != 0) { + isc_textregion_t r; + DE_CONST("#", r.base); + r.length = 1; + RETERR(txt_fromtext(&r, target)); + strings++; + } + for (;;) { + RETERR(isc_lex_getmastertoken(lexer, &token, + isc_tokentype_qstring, true)); + if (token.type != isc_tokentype_qstring && + token.type != isc_tokentype_string) + { + break; + } + RETTOK(txt_fromtext(&token.value.as_textregion, target)); + strings++; + } + /* Let upper layer handle eol/eof. */ + isc_lex_ungettoken(lexer, &token); + return (strings == 0 ? ISC_R_UNEXPECTEDEND : ISC_R_SUCCESS); +} + +static isc_result_t +generic_totext_txt(ARGS_TOTEXT) { + isc_region_t region; + + UNUSED(tctx); + + dns_rdata_toregion(rdata, ®ion); + + while (region.length > 0) { + RETERR(txt_totext(®ion, true, target)); + if (region.length > 0) { + RETERR(str_totext(" ", target)); + } + } + + return (ISC_R_SUCCESS); +} + +static isc_result_t +generic_fromwire_txt(ARGS_FROMWIRE) { + isc_result_t result; + + UNUSED(type); + UNUSED(dctx); + UNUSED(rdclass); + UNUSED(options); + + do { + result = txt_fromwire(source, target); + if (result != ISC_R_SUCCESS) { + return (result); + } + } while (!buffer_empty(source)); + return (ISC_R_SUCCESS); +} + +static isc_result_t +fromtext_txt(ARGS_FROMTEXT) { + REQUIRE(type == dns_rdatatype_txt); + + return (generic_fromtext_txt(CALL_FROMTEXT)); +} + +static isc_result_t +totext_txt(ARGS_TOTEXT) { + REQUIRE(rdata != NULL); + REQUIRE(rdata->type == dns_rdatatype_txt); + + return (generic_totext_txt(CALL_TOTEXT)); +} + +static isc_result_t +fromwire_txt(ARGS_FROMWIRE) { + REQUIRE(type == dns_rdatatype_txt); + + return (generic_fromwire_txt(CALL_FROMWIRE)); +} + +static isc_result_t +towire_txt(ARGS_TOWIRE) { + REQUIRE(rdata->type == dns_rdatatype_txt); + + UNUSED(cctx); + + return (mem_tobuffer(target, rdata->data, rdata->length)); +} + +static int +compare_txt(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_txt); + + dns_rdata_toregion(rdata1, &r1); + dns_rdata_toregion(rdata2, &r2); + return (isc_region_compare(&r1, &r2)); +} + +static isc_result_t +generic_fromstruct_txt(ARGS_FROMSTRUCT) { + dns_rdata_txt_t *txt = source; + isc_region_t region; + uint8_t length; + + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdtype == type); + REQUIRE(txt->common.rdclass == rdclass); + REQUIRE(txt->txt != NULL && txt->txt_len != 0); + + UNUSED(type); + UNUSED(rdclass); + + region.base = txt->txt; + region.length = txt->txt_len; + while (region.length > 0) { + length = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + if (region.length < length) { + return (ISC_R_UNEXPECTEDEND); + } + isc_region_consume(®ion, length); + } + + return (mem_tobuffer(target, txt->txt, txt->txt_len)); +} + +static isc_result_t +generic_tostruct_txt(ARGS_TOSTRUCT) { + dns_rdata_txt_t *txt = target; + isc_region_t r; + + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdclass == rdata->rdclass); + REQUIRE(txt->common.rdtype == rdata->type); + REQUIRE(!ISC_LINK_LINKED(&txt->common, link)); + + dns_rdata_toregion(rdata, &r); + txt->txt_len = r.length; + txt->txt = mem_maybedup(mctx, r.base, r.length); + if (txt->txt == NULL) { + return (ISC_R_NOMEMORY); + } + + txt->offset = 0; + txt->mctx = mctx; + return (ISC_R_SUCCESS); +} + +static void +generic_freestruct_txt(ARGS_FREESTRUCT) { + dns_rdata_txt_t *txt = source; + + REQUIRE(txt != NULL); + + if (txt->mctx == NULL) { + return; + } + + if (txt->txt != NULL) { + isc_mem_free(txt->mctx, txt->txt); + } + txt->mctx = NULL; +} + +static isc_result_t +fromstruct_txt(ARGS_FROMSTRUCT) { + REQUIRE(type == dns_rdatatype_txt); + + return (generic_fromstruct_txt(CALL_FROMSTRUCT)); +} + +static isc_result_t +tostruct_txt(ARGS_TOSTRUCT) { + dns_rdata_txt_t *txt = target; + + REQUIRE(rdata->type == dns_rdatatype_txt); + REQUIRE(txt != NULL); + + txt->common.rdclass = rdata->rdclass; + txt->common.rdtype = rdata->type; + ISC_LINK_INIT(&txt->common, link); + + return (generic_tostruct_txt(CALL_TOSTRUCT)); +} + +static void +freestruct_txt(ARGS_FREESTRUCT) { + dns_rdata_txt_t *txt = source; + + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdtype == dns_rdatatype_txt); + + generic_freestruct_txt(source); +} + +static isc_result_t +additionaldata_txt(ARGS_ADDLDATA) { + REQUIRE(rdata->type == dns_rdatatype_txt); + + UNUSED(rdata); + UNUSED(add); + UNUSED(arg); + + return (ISC_R_SUCCESS); +} + +static isc_result_t +digest_txt(ARGS_DIGEST) { + isc_region_t r; + + REQUIRE(rdata->type == dns_rdatatype_txt); + + dns_rdata_toregion(rdata, &r); + + return ((digest)(arg, &r)); +} + +static bool +checkowner_txt(ARGS_CHECKOWNER) { + REQUIRE(type == dns_rdatatype_txt); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static bool +checknames_txt(ARGS_CHECKNAMES) { + REQUIRE(rdata->type == dns_rdatatype_txt); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static int +casecompare_txt(ARGS_COMPARE) { + return (compare_txt(rdata1, rdata2)); +} + +static isc_result_t +generic_txt_first(dns_rdata_txt_t *txt) { + REQUIRE(txt != NULL); + REQUIRE(txt->txt != NULL || txt->txt_len == 0); + + if (txt->txt_len == 0) { + return (ISC_R_NOMORE); + } + + txt->offset = 0; + return (ISC_R_SUCCESS); +} + +static isc_result_t +generic_txt_next(dns_rdata_txt_t *txt) { + isc_region_t r; + uint8_t length; + + REQUIRE(txt != NULL); + REQUIRE(txt->txt != NULL && txt->txt_len != 0); + + INSIST(txt->offset + 1 <= txt->txt_len); + r.base = txt->txt + txt->offset; + r.length = txt->txt_len - txt->offset; + length = uint8_fromregion(&r); + INSIST(txt->offset + 1 + length <= txt->txt_len); + txt->offset = txt->offset + 1 + length; + if (txt->offset == txt->txt_len) { + return (ISC_R_NOMORE); + } + return (ISC_R_SUCCESS); +} + +static isc_result_t +generic_txt_current(dns_rdata_txt_t *txt, dns_rdata_txt_string_t *string) { + isc_region_t r; + + REQUIRE(txt != NULL); + REQUIRE(string != NULL); + REQUIRE(txt->txt != NULL); + REQUIRE(txt->offset < txt->txt_len); + + INSIST(txt->offset + 1 <= txt->txt_len); + r.base = txt->txt + txt->offset; + r.length = txt->txt_len - txt->offset; + + string->length = uint8_fromregion(&r); + isc_region_consume(&r, 1); + string->data = r.base; + INSIST(txt->offset + 1 + string->length <= txt->txt_len); + + return (ISC_R_SUCCESS); +} + +isc_result_t +dns_rdata_txt_first(dns_rdata_txt_t *txt) { + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdtype == dns_rdatatype_txt); + + return (generic_txt_first(txt)); +} + +isc_result_t +dns_rdata_txt_next(dns_rdata_txt_t *txt) { + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdtype == dns_rdatatype_txt); + + return (generic_txt_next(txt)); +} + +isc_result_t +dns_rdata_txt_current(dns_rdata_txt_t *txt, dns_rdata_txt_string_t *string) { + REQUIRE(txt != NULL); + REQUIRE(txt->common.rdtype == dns_rdatatype_txt); + + return (generic_txt_current(txt, string)); +} +#endif /* RDATA_GENERIC_TXT_16_C */ |