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Diffstat (limited to 'lib/dns/rdata/generic/hip_55.c')
-rw-r--r--lib/dns/rdata/generic/hip_55.c523
1 files changed, 523 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..e67df0e
--- /dev/null
+++ b/lib/dns/rdata/generic/hip_55.c
@@ -0,0 +1,523 @@
+/*
+ * 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 */
+
+#pragma once
+
+#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) {
+ REQUIRE(rdata->type == dns_rdatatype_hip);
+
+ UNUSED(rdata);
+ UNUSED(owner);
+ UNUSED(add);
+ UNUSED(arg);
+
+ 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));
+}
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