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Diffstat (limited to '')
| -rw-r--r-- | lib/dns/rdata/generic/ipseckey_45.c | 526 |
1 files changed, 526 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/ipseckey_45.c b/lib/dns/rdata/generic/ipseckey_45.c new file mode 100644 index 0000000..bc9d457 --- /dev/null +++ b/lib/dns/rdata/generic/ipseckey_45.c @@ -0,0 +1,526 @@ +/* + * 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_IPSECKEY_45_C +#define RDATA_GENERIC_IPSECKEY_45_C + +#include <string.h> + +#include <isc/net.h> + +#define RRTYPE_IPSECKEY_ATTRIBUTES (0) + +static isc_result_t +fromtext_ipseckey(ARGS_FROMTEXT) { + isc_token_t token; + dns_name_t name; + isc_buffer_t buffer; + unsigned int gateway; + struct in_addr addr; + unsigned char addr6[16]; + isc_region_t region; + + REQUIRE(type == dns_rdatatype_ipseckey); + + UNUSED(type); + UNUSED(rdclass); + UNUSED(callbacks); + + /* + * Precedence. + */ + 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)); + + /* + * Gateway type. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number, + false)); + if (token.value.as_ulong > 0x3U) { + RETTOK(ISC_R_RANGE); + } + RETERR(uint8_tobuffer(token.value.as_ulong, target)); + gateway = token.value.as_ulong; + + /* + * 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)); + + /* + * Gateway. + */ + RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string, + false)); + + switch (gateway) { + case 0: + if (strcmp(DNS_AS_STR(token), ".") != 0) { + RETTOK(DNS_R_SYNTAX); + } + break; + + case 1: + if (inet_pton(AF_INET, DNS_AS_STR(token), &addr) != 1) { + RETTOK(DNS_R_BADDOTTEDQUAD); + } + isc_buffer_availableregion(target, ®ion); + if (region.length < 4) { + return (ISC_R_NOSPACE); + } + memmove(region.base, &addr, 4); + isc_buffer_add(target, 4); + break; + + case 2: + if (inet_pton(AF_INET6, DNS_AS_STR(token), addr6) != 1) { + RETTOK(DNS_R_BADAAAA); + } + isc_buffer_availableregion(target, ®ion); + if (region.length < 16) { + return (ISC_R_NOSPACE); + } + memmove(region.base, addr6, 16); + isc_buffer_add(target, 16); + break; + + case 3: + dns_name_init(&name, NULL); + buffer_fromregion(&buffer, &token.value.as_region); + if (origin == NULL) { + origin = dns_rootname; + } + RETTOK(dns_name_fromtext(&name, &buffer, origin, options, + target)); + break; + } + + /* + * Public key. + */ + return (isc_base64_tobuffer(lexer, target, -2)); +} + +static isc_result_t +totext_ipseckey(ARGS_TOTEXT) { + isc_region_t region; + dns_name_t name; + char buf[sizeof("255 ")]; + unsigned short num; + unsigned short gateway; + + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + REQUIRE(rdata->length >= 3); + + dns_name_init(&name, NULL); + + if (rdata->data[1] > 3U) { + return (ISC_R_NOTIMPLEMENTED); + } + + if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { + RETERR(str_totext("( ", target)); + } + + /* + * Precedence. + */ + dns_rdata_toregion(rdata, ®ion); + num = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + snprintf(buf, sizeof(buf), "%u ", num); + RETERR(str_totext(buf, target)); + + /* + * Gateway type. + */ + gateway = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + snprintf(buf, sizeof(buf), "%u ", gateway); + RETERR(str_totext(buf, target)); + + /* + * Algorithm. + */ + num = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + snprintf(buf, sizeof(buf), "%u ", num); + RETERR(str_totext(buf, target)); + + /* + * Gateway. + */ + switch (gateway) { + case 0: + RETERR(str_totext(".", target)); + break; + + case 1: + RETERR(inet_totext(AF_INET, tctx->flags, ®ion, target)); + isc_region_consume(®ion, 4); + break; + + case 2: + RETERR(inet_totext(AF_INET6, tctx->flags, ®ion, target)); + isc_region_consume(®ion, 16); + break; + + case 3: + dns_name_fromregion(&name, ®ion); + RETERR(dns_name_totext(&name, false, target)); + isc_region_consume(®ion, name_length(&name)); + break; + } + + /* + * Key. + */ + if (region.length > 0U) { + RETERR(str_totext(tctx->linebreak, target)); + if (tctx->width == 0) { /* No splitting */ + RETERR(isc_base64_totext(®ion, 60, "", target)); + } else { + RETERR(isc_base64_totext(®ion, tctx->width - 2, + tctx->linebreak, target)); + } + } + + if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0) { + RETERR(str_totext(" )", target)); + } + return (ISC_R_SUCCESS); +} + +static isc_result_t +fromwire_ipseckey(ARGS_FROMWIRE) { + dns_name_t name; + isc_region_t region; + + REQUIRE(type == dns_rdatatype_ipseckey); + + UNUSED(type); + UNUSED(rdclass); + + dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE); + + dns_name_init(&name, NULL); + + isc_buffer_activeregion(source, ®ion); + if (region.length < 3) { + return (ISC_R_UNEXPECTEDEND); + } + + switch (region.base[1]) { + case 0: + if (region.length < 4) { + return (ISC_R_UNEXPECTEDEND); + } + isc_buffer_forward(source, region.length); + return (mem_tobuffer(target, region.base, region.length)); + + case 1: + if (region.length < 8) { + return (ISC_R_UNEXPECTEDEND); + } + isc_buffer_forward(source, region.length); + return (mem_tobuffer(target, region.base, region.length)); + + case 2: + if (region.length < 20) { + return (ISC_R_UNEXPECTEDEND); + } + isc_buffer_forward(source, region.length); + return (mem_tobuffer(target, region.base, region.length)); + + case 3: + RETERR(mem_tobuffer(target, region.base, 3)); + isc_buffer_forward(source, 3); + RETERR(dns_name_fromwire(&name, source, dctx, options, target)); + isc_buffer_activeregion(source, ®ion); + isc_buffer_forward(source, region.length); + if (region.length < 1) { + return (ISC_R_UNEXPECTEDEND); + } + return (mem_tobuffer(target, region.base, region.length)); + + default: + return (ISC_R_NOTIMPLEMENTED); + } +} + +static isc_result_t +towire_ipseckey(ARGS_TOWIRE) { + isc_region_t region; + + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + REQUIRE(rdata->length != 0); + + UNUSED(cctx); + + dns_rdata_toregion(rdata, ®ion); + return (mem_tobuffer(target, region.base, region.length)); +} + +static int +compare_ipseckey(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_ipseckey); + REQUIRE(rdata1->length >= 3); + REQUIRE(rdata2->length >= 3); + + dns_rdata_toregion(rdata1, ®ion1); + dns_rdata_toregion(rdata2, ®ion2); + + return (isc_region_compare(®ion1, ®ion2)); +} + +static isc_result_t +fromstruct_ipseckey(ARGS_FROMSTRUCT) { + dns_rdata_ipseckey_t *ipseckey = source; + isc_region_t region; + uint32_t n; + + REQUIRE(type == dns_rdatatype_ipseckey); + REQUIRE(ipseckey != NULL); + REQUIRE(ipseckey->common.rdtype == type); + REQUIRE(ipseckey->common.rdclass == rdclass); + + UNUSED(type); + UNUSED(rdclass); + + if (ipseckey->gateway_type > 3U) { + return (ISC_R_NOTIMPLEMENTED); + } + + RETERR(uint8_tobuffer(ipseckey->precedence, target)); + RETERR(uint8_tobuffer(ipseckey->gateway_type, target)); + RETERR(uint8_tobuffer(ipseckey->algorithm, target)); + + switch (ipseckey->gateway_type) { + case 0: + break; + + case 1: + n = ntohl(ipseckey->in_addr.s_addr); + RETERR(uint32_tobuffer(n, target)); + break; + + case 2: + RETERR(mem_tobuffer(target, ipseckey->in6_addr.s6_addr, 16)); + break; + + case 3: + dns_name_toregion(&ipseckey->gateway, ®ion); + RETERR(isc_buffer_copyregion(target, ®ion)); + break; + } + + return (mem_tobuffer(target, ipseckey->key, ipseckey->keylength)); +} + +static isc_result_t +tostruct_ipseckey(ARGS_TOSTRUCT) { + isc_region_t region; + dns_rdata_ipseckey_t *ipseckey = target; + dns_name_t name; + uint32_t n; + + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + REQUIRE(ipseckey != NULL); + REQUIRE(rdata->length >= 3); + + if (rdata->data[1] > 3U) { + return (ISC_R_NOTIMPLEMENTED); + } + + ipseckey->common.rdclass = rdata->rdclass; + ipseckey->common.rdtype = rdata->type; + ISC_LINK_INIT(&ipseckey->common, link); + + dns_name_init(&name, NULL); + dns_rdata_toregion(rdata, ®ion); + + ipseckey->precedence = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + + ipseckey->gateway_type = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + + ipseckey->algorithm = uint8_fromregion(®ion); + isc_region_consume(®ion, 1); + + switch (ipseckey->gateway_type) { + case 0: + break; + + case 1: + n = uint32_fromregion(®ion); + ipseckey->in_addr.s_addr = htonl(n); + isc_region_consume(®ion, 4); + break; + + case 2: + memmove(ipseckey->in6_addr.s6_addr, region.base, 16); + isc_region_consume(®ion, 16); + break; + + case 3: + dns_name_init(&ipseckey->gateway, NULL); + dns_name_fromregion(&name, ®ion); + RETERR(name_duporclone(&name, mctx, &ipseckey->gateway)); + isc_region_consume(®ion, name_length(&name)); + break; + } + + ipseckey->keylength = region.length; + if (ipseckey->keylength != 0U) { + ipseckey->key = mem_maybedup(mctx, region.base, + ipseckey->keylength); + if (ipseckey->key == NULL) { + if (ipseckey->gateway_type == 3) { + dns_name_free(&ipseckey->gateway, + ipseckey->mctx); + } + return (ISC_R_NOMEMORY); + } + } else { + ipseckey->key = NULL; + } + + ipseckey->mctx = mctx; + return (ISC_R_SUCCESS); +} + +static void +freestruct_ipseckey(ARGS_FREESTRUCT) { + dns_rdata_ipseckey_t *ipseckey = source; + + REQUIRE(ipseckey != NULL); + REQUIRE(ipseckey->common.rdtype == dns_rdatatype_ipseckey); + + if (ipseckey->mctx == NULL) { + return; + } + + if (ipseckey->gateway_type == 3) { + dns_name_free(&ipseckey->gateway, ipseckey->mctx); + } + + if (ipseckey->key != NULL) { + isc_mem_free(ipseckey->mctx, ipseckey->key); + } + + ipseckey->mctx = NULL; +} + +static isc_result_t +additionaldata_ipseckey(ARGS_ADDLDATA) { + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + + UNUSED(rdata); + UNUSED(add); + UNUSED(arg); + + return (ISC_R_SUCCESS); +} + +static isc_result_t +digest_ipseckey(ARGS_DIGEST) { + isc_region_t region; + + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + + dns_rdata_toregion(rdata, ®ion); + return ((digest)(arg, ®ion)); +} + +static bool +checkowner_ipseckey(ARGS_CHECKOWNER) { + REQUIRE(type == dns_rdatatype_ipseckey); + + UNUSED(name); + UNUSED(type); + UNUSED(rdclass); + UNUSED(wildcard); + + return (true); +} + +static bool +checknames_ipseckey(ARGS_CHECKNAMES) { + REQUIRE(rdata->type == dns_rdatatype_ipseckey); + + UNUSED(rdata); + UNUSED(owner); + UNUSED(bad); + + return (true); +} + +static int +casecompare_ipseckey(ARGS_COMPARE) { + isc_region_t region1; + isc_region_t region2; + dns_name_t name1; + dns_name_t name2; + int order; + + REQUIRE(rdata1->type == rdata2->type); + REQUIRE(rdata1->rdclass == rdata2->rdclass); + REQUIRE(rdata1->type == dns_rdatatype_ipseckey); + REQUIRE(rdata1->length >= 3); + REQUIRE(rdata2->length >= 3); + + dns_rdata_toregion(rdata1, ®ion1); + dns_rdata_toregion(rdata2, ®ion2); + + if (memcmp(region1.base, region2.base, 3) != 0 || region1.base[1] != 3) + { + return (isc_region_compare(®ion1, ®ion2)); + } + + dns_name_init(&name1, NULL); + dns_name_init(&name2, NULL); + + isc_region_consume(®ion1, 3); + isc_region_consume(®ion2, 3); + + dns_name_fromregion(&name1, ®ion1); + dns_name_fromregion(&name2, ®ion2); + + order = dns_name_rdatacompare(&name1, &name2); + if (order != 0) { + return (order); + } + + isc_region_consume(®ion1, name_length(&name1)); + isc_region_consume(®ion2, name_length(&name2)); + + return (isc_region_compare(®ion1, ®ion2)); +} + +#endif /* RDATA_GENERIC_IPSECKEY_45_C */ |