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, &region);
+
+	while (region.length > 0) {
+		RETERR(txt_totext(&region, 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(&region);
+		isc_region_consume(&region, 1);
+		if (region.length < length) {
+			return (ISC_R_UNEXPECTEDEND);
+		}
+		isc_region_consume(&region, 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 */