Adding upstream version 1:9.16.44.upstream/1%9.16.44upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 525 insertions, 0 deletions

diff --git a/lib/dns/rdata/generic/hip_55.c b/lib/dns/rdata/generic/hip_55.c
new file mode 100644
index 0000000..5c9041a
--- /dev/null
+++ b/lib/dns/rdata/generic/hip_55.c
@@ -0,0 +1,525 @@
+/*
+ * 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.
+ */
+
+/* RFC 5205 */
+
+#ifndef RDATA_GENERIC_HIP_5_C
+#define RDATA_GENERIC_HIP_5_C
+
+#define RRTYPE_HIP_ATTRIBUTES (0)
+
+static isc_result_t
+fromtext_hip(ARGS_FROMTEXT) {
+	isc_token_t token;
+	dns_name_t name;
+	isc_buffer_t buffer;
+	isc_buffer_t hit_len;
+	isc_buffer_t key_len;
+	unsigned char *start;
+	size_t len;
+
+	REQUIRE(type == dns_rdatatype_hip);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(callbacks);
+
+	/*
+	 * Dummy HIT len.
+	 */
+	hit_len = *target;
+	RETERR(uint8_tobuffer(0, target));
+
+	/*
+	 * 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));
+
+	/*
+	 * Dummy KEY len.
+	 */
+	key_len = *target;
+	RETERR(uint16_tobuffer(0, target));
+
+	/*
+	 * HIT (base16).
+	 */
+	start = isc_buffer_used(target);
+	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+				      false));
+	RETTOK(isc_hex_decodestring(DNS_AS_STR(token), target));
+
+	/*
+	 * Fill in HIT len.
+	 */
+	len = (unsigned char *)isc_buffer_used(target) - start;
+	if (len > 0xffU) {
+		RETTOK(ISC_R_RANGE);
+	}
+	RETERR(uint8_tobuffer((uint32_t)len, &hit_len));
+
+	/*
+	 * Public key (base64).
+	 */
+	start = isc_buffer_used(target);
+	RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+				      false));
+	RETTOK(isc_base64_decodestring(DNS_AS_STR(token), target));
+
+	/*
+	 * Fill in KEY len.
+	 */
+	len = (unsigned char *)isc_buffer_used(target) - start;
+	if (len > 0xffffU) {
+		RETTOK(ISC_R_RANGE);
+	}
+	RETERR(uint16_tobuffer((uint32_t)len, &key_len));
+
+	if (origin == NULL) {
+		origin = dns_rootname;
+	}
+
+	/*
+	 * Rendezvous Servers.
+	 */
+	dns_name_init(&name, NULL);
+	do {
+		RETERR(isc_lex_getmastertoken(lexer, &token,
+					      isc_tokentype_string, true));
+		if (token.type != isc_tokentype_string) {
+			break;
+		}
+		buffer_fromregion(&buffer, &token.value.as_region);
+		RETTOK(dns_name_fromtext(&name, &buffer, origin, options,
+					 target));
+	} while (1);
+
+	/*
+	 * Let upper layer handle eol/eof.
+	 */
+	isc_lex_ungettoken(lexer, &token);
+
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+totext_hip(ARGS_TOTEXT) {
+	isc_region_t region;
+	dns_name_t name;
+	unsigned int length, key_len, hit_len;
+	unsigned char algorithm;
+	char buf[sizeof("225 ")];
+
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+	REQUIRE(rdata->length != 0);
+
+	dns_rdata_toregion(rdata, &region);
+
+	hit_len = uint8_fromregion(&region);
+	isc_region_consume(&region, 1);
+
+	algorithm = uint8_fromregion(&region);
+	isc_region_consume(&region, 1);
+
+	key_len = uint16_fromregion(&region);
+	isc_region_consume(&region, 2);
+
+	if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {
+		RETERR(str_totext("( ", target));
+	}
+
+	/*
+	 * Algorithm
+	 */
+	snprintf(buf, sizeof(buf), "%u ", algorithm);
+	RETERR(str_totext(buf, target));
+
+	/*
+	 * HIT.
+	 */
+	INSIST(hit_len < region.length);
+	length = region.length;
+	region.length = hit_len;
+	RETERR(isc_hex_totext(&region, 1, "", target));
+	region.length = length - hit_len;
+	RETERR(str_totext(tctx->linebreak, target));
+
+	/*
+	 * Public KEY.
+	 */
+	INSIST(key_len <= region.length);
+	length = region.length;
+	region.length = key_len;
+	RETERR(isc_base64_totext(&region, 1, "", target));
+	region.length = length - key_len;
+	if (region.length > 0) {
+		RETERR(str_totext(tctx->linebreak, target));
+	}
+
+	/*
+	 * Rendezvous Servers.
+	 */
+	dns_name_init(&name, NULL);
+	while (region.length > 0) {
+		dns_name_fromregion(&name, &region);
+
+		RETERR(dns_name_totext(&name, false, target));
+		isc_region_consume(&region, name.length);
+		if (region.length > 0) {
+			RETERR(str_totext(tctx->linebreak, target));
+		}
+	}
+	if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) {
+		RETERR(str_totext(" )", target));
+	}
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+fromwire_hip(ARGS_FROMWIRE) {
+	isc_region_t region, rr;
+	dns_name_t name;
+	uint8_t hit_len;
+	uint16_t key_len;
+	size_t len;
+
+	REQUIRE(type == dns_rdatatype_hip);
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	isc_buffer_activeregion(source, &region);
+	if (region.length < 4U) {
+		RETERR(DNS_R_FORMERR);
+	}
+
+	rr = region;
+	hit_len = uint8_fromregion(&region);
+	if (hit_len == 0) {
+		RETERR(DNS_R_FORMERR);
+	}
+	isc_region_consume(&region, 2); /* hit length + algorithm */
+	key_len = uint16_fromregion(&region);
+	if (key_len == 0) {
+		RETERR(DNS_R_FORMERR);
+	}
+	isc_region_consume(&region, 2);
+	len = hit_len + key_len;
+	if (len > region.length) {
+		RETERR(DNS_R_FORMERR);
+	}
+
+	RETERR(mem_tobuffer(target, rr.base, 4 + len));
+	isc_buffer_forward(source, 4 + len);
+
+	dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
+	while (isc_buffer_activelength(source) > 0) {
+		dns_name_init(&name, NULL);
+		RETERR(dns_name_fromwire(&name, source, dctx, options, target));
+	}
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+towire_hip(ARGS_TOWIRE) {
+	isc_region_t region;
+
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+	REQUIRE(rdata->length != 0);
+
+	UNUSED(cctx);
+
+	dns_rdata_toregion(rdata, &region);
+	return (mem_tobuffer(target, region.base, region.length));
+}
+
+static int
+compare_hip(ARGS_COMPARE) {
+	isc_region_t region1;
+	isc_region_t region2;
+
+	REQUIRE(rdata1->type == rdata2->type);
+	REQUIRE(rdata1->rdclass == rdata2->rdclass);
+	REQUIRE(rdata1->type == dns_rdatatype_hip);
+	REQUIRE(rdata1->length != 0);
+	REQUIRE(rdata2->length != 0);
+
+	dns_rdata_toregion(rdata1, &region1);
+	dns_rdata_toregion(rdata2, &region2);
+	return (isc_region_compare(&region1, &region2));
+}
+
+static isc_result_t
+fromstruct_hip(ARGS_FROMSTRUCT) {
+	dns_rdata_hip_t *hip = source;
+	dns_rdata_hip_t myhip;
+	isc_result_t result;
+
+	REQUIRE(type == dns_rdatatype_hip);
+	REQUIRE(hip != NULL);
+	REQUIRE(hip->common.rdtype == type);
+	REQUIRE(hip->common.rdclass == rdclass);
+	REQUIRE(hip->hit_len > 0 && hip->hit != NULL);
+	REQUIRE(hip->key_len > 0 && hip->key != NULL);
+	REQUIRE((hip->servers == NULL && hip->servers_len == 0) ||
+		(hip->servers != NULL && hip->servers_len != 0));
+
+	UNUSED(type);
+	UNUSED(rdclass);
+
+	RETERR(uint8_tobuffer(hip->hit_len, target));
+	RETERR(uint8_tobuffer(hip->algorithm, target));
+	RETERR(uint16_tobuffer(hip->key_len, target));
+	RETERR(mem_tobuffer(target, hip->hit, hip->hit_len));
+	RETERR(mem_tobuffer(target, hip->key, hip->key_len));
+
+	myhip = *hip;
+	for (result = dns_rdata_hip_first(&myhip); result == ISC_R_SUCCESS;
+	     result = dns_rdata_hip_next(&myhip))
+	{
+		/* initialize the names */
+	}
+
+	return (mem_tobuffer(target, hip->servers, hip->servers_len));
+}
+
+static isc_result_t
+tostruct_hip(ARGS_TOSTRUCT) {
+	isc_region_t region;
+	dns_rdata_hip_t *hip = target;
+
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+	REQUIRE(hip != NULL);
+	REQUIRE(rdata->length != 0);
+
+	hip->common.rdclass = rdata->rdclass;
+	hip->common.rdtype = rdata->type;
+	ISC_LINK_INIT(&hip->common, link);
+
+	dns_rdata_toregion(rdata, &region);
+
+	hip->hit_len = uint8_fromregion(&region);
+	isc_region_consume(&region, 1);
+
+	hip->algorithm = uint8_fromregion(&region);
+	isc_region_consume(&region, 1);
+
+	hip->key_len = uint16_fromregion(&region);
+	isc_region_consume(&region, 2);
+
+	hip->hit = hip->key = hip->servers = NULL;
+
+	hip->hit = mem_maybedup(mctx, region.base, hip->hit_len);
+	if (hip->hit == NULL) {
+		goto cleanup;
+	}
+	isc_region_consume(&region, hip->hit_len);
+
+	INSIST(hip->key_len <= region.length);
+
+	hip->key = mem_maybedup(mctx, region.base, hip->key_len);
+	if (hip->key == NULL) {
+		goto cleanup;
+	}
+	isc_region_consume(&region, hip->key_len);
+
+	hip->servers_len = region.length;
+	if (hip->servers_len != 0) {
+		hip->servers = mem_maybedup(mctx, region.base, region.length);
+		if (hip->servers == NULL) {
+			goto cleanup;
+		}
+	}
+
+	hip->offset = hip->servers_len;
+	hip->mctx = mctx;
+	return (ISC_R_SUCCESS);
+
+cleanup:
+	if (hip->hit != NULL) {
+		isc_mem_free(mctx, hip->hit);
+	}
+	if (hip->key != NULL) {
+		isc_mem_free(mctx, hip->key);
+	}
+	if (hip->servers != NULL) {
+		isc_mem_free(mctx, hip->servers);
+	}
+	return (ISC_R_NOMEMORY);
+}
+
+static void
+freestruct_hip(ARGS_FREESTRUCT) {
+	dns_rdata_hip_t *hip = source;
+
+	REQUIRE(hip != NULL);
+
+	if (hip->mctx == NULL) {
+		return;
+	}
+
+	isc_mem_free(hip->mctx, hip->hit);
+	isc_mem_free(hip->mctx, hip->key);
+	if (hip->servers != NULL) {
+		isc_mem_free(hip->mctx, hip->servers);
+	}
+	hip->mctx = NULL;
+}
+
+static isc_result_t
+additionaldata_hip(ARGS_ADDLDATA) {
+	UNUSED(rdata);
+	UNUSED(add);
+	UNUSED(arg);
+
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+
+	return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+digest_hip(ARGS_DIGEST) {
+	isc_region_t r;
+
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+
+	dns_rdata_toregion(rdata, &r);
+	return ((digest)(arg, &r));
+}
+
+static bool
+checkowner_hip(ARGS_CHECKOWNER) {
+	REQUIRE(type == dns_rdatatype_hip);
+
+	UNUSED(name);
+	UNUSED(type);
+	UNUSED(rdclass);
+	UNUSED(wildcard);
+
+	return (true);
+}
+
+static bool
+checknames_hip(ARGS_CHECKNAMES) {
+	REQUIRE(rdata->type == dns_rdatatype_hip);
+
+	UNUSED(rdata);
+	UNUSED(owner);
+	UNUSED(bad);
+
+	return (true);
+}
+
+isc_result_t
+dns_rdata_hip_first(dns_rdata_hip_t *hip) {
+	if (hip->servers_len == 0) {
+		return (ISC_R_NOMORE);
+	}
+	hip->offset = 0;
+	return (ISC_R_SUCCESS);
+}
+
+isc_result_t
+dns_rdata_hip_next(dns_rdata_hip_t *hip) {
+	isc_region_t region;
+	dns_name_t name;
+
+	if (hip->offset >= hip->servers_len) {
+		return (ISC_R_NOMORE);
+	}
+
+	region.base = hip->servers + hip->offset;
+	region.length = hip->servers_len - hip->offset;
+	dns_name_init(&name, NULL);
+	dns_name_fromregion(&name, &region);
+	hip->offset += name.length;
+	INSIST(hip->offset <= hip->servers_len);
+	return (hip->offset < hip->servers_len ? ISC_R_SUCCESS : ISC_R_NOMORE);
+}
+
+void
+dns_rdata_hip_current(dns_rdata_hip_t *hip, dns_name_t *name) {
+	isc_region_t region;
+
+	REQUIRE(hip->offset < hip->servers_len);
+
+	region.base = hip->servers + hip->offset;
+	region.length = hip->servers_len - hip->offset;
+	dns_name_fromregion(name, &region);
+
+	INSIST(name->length + hip->offset <= hip->servers_len);
+}
+
+static int
+casecompare_hip(ARGS_COMPARE) {
+	isc_region_t r1;
+	isc_region_t r2;
+	dns_name_t name1;
+	dns_name_t name2;
+	int order;
+	uint8_t hit_len;
+	uint16_t key_len;
+
+	REQUIRE(rdata1->type == rdata2->type);
+	REQUIRE(rdata1->rdclass == rdata2->rdclass);
+	REQUIRE(rdata1->type == dns_rdatatype_hip);
+	REQUIRE(rdata1->length != 0);
+	REQUIRE(rdata2->length != 0);
+
+	dns_rdata_toregion(rdata1, &r1);
+	dns_rdata_toregion(rdata2, &r2);
+
+	INSIST(r1.length > 4);
+	INSIST(r2.length > 4);
+	order = memcmp(r1.base, r2.base, 4);
+	if (order != 0) {
+		return (order);
+	}
+
+	hit_len = uint8_fromregion(&r1);
+	isc_region_consume(&r1, 2); /* hit length + algorithm */
+	key_len = uint16_fromregion(&r1);
+	isc_region_consume(&r1, 2); /* key length */
+	isc_region_consume(&r2, 4);
+
+	INSIST(r1.length >= (unsigned)(hit_len + key_len));
+	INSIST(r2.length >= (unsigned)(hit_len + key_len));
+	order = memcmp(r1.base, r2.base, hit_len + key_len);
+	if (order != 0) {
+		return (order);
+	}
+	isc_region_consume(&r1, hit_len + key_len);
+	isc_region_consume(&r2, hit_len + key_len);
+
+	dns_name_init(&name1, NULL);
+	dns_name_init(&name2, NULL);
+	while (r1.length != 0 && r2.length != 0) {
+		dns_name_fromregion(&name1, &r1);
+		dns_name_fromregion(&name2, &r2);
+		order = dns_name_rdatacompare(&name1, &name2);
+		if (order != 0) {
+			return (order);
+		}
+
+		isc_region_consume(&r1, name_length(&name1));
+		isc_region_consume(&r2, name_length(&name2));
+	}
+	return (isc_region_compare(&r1, &r2));
+}
+
+#endif /* RDATA_GENERIC_HIP_5_C */