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-rw-r--r--lib/dns/rdata/generic/naptr_35.c740
1 files changed, 740 insertions, 0 deletions
diff --git a/lib/dns/rdata/generic/naptr_35.c b/lib/dns/rdata/generic/naptr_35.c
new file mode 100644
index 0000000..3f43e0e
--- /dev/null
+++ b/lib/dns/rdata/generic/naptr_35.c
@@ -0,0 +1,740 @@
+/*
+ * 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.
+ */
+
+/* RFC2915 */
+
+#ifndef RDATA_GENERIC_NAPTR_35_C
+#define RDATA_GENERIC_NAPTR_35_C
+
+#define RRTYPE_NAPTR_ATTRIBUTES (0)
+
+#include <isc/regex.h>
+
+/*
+ * Check the wire format of the Regexp field.
+ * Don't allow embedded NUL's.
+ */
+static isc_result_t
+txt_valid_regex(const unsigned char *txt) {
+ unsigned int nsub = 0;
+ char regex[256];
+ char *cp;
+ bool flags = false;
+ bool replace = false;
+ unsigned char c;
+ unsigned char delim;
+ unsigned int len;
+ int n;
+
+ len = *txt++;
+ if (len == 0U) {
+ return (ISC_R_SUCCESS);
+ }
+
+ delim = *txt++;
+ len--;
+
+ /*
+ * Digits, backslash and flags can't be delimiters.
+ */
+ switch (delim) {
+ case '0':
+ case '1':
+ case '2':
+ case '3':
+ case '4':
+ case '5':
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ case '\\':
+ case 'i':
+ case 0:
+ return (DNS_R_SYNTAX);
+ }
+
+ cp = regex;
+ while (len-- > 0) {
+ c = *txt++;
+ if (c == 0) {
+ return (DNS_R_SYNTAX);
+ }
+ if (c == delim && !replace) {
+ replace = true;
+ continue;
+ } else if (c == delim && !flags) {
+ flags = true;
+ continue;
+ } else if (c == delim) {
+ return (DNS_R_SYNTAX);
+ }
+ /*
+ * Flags are not escaped.
+ */
+ if (flags) {
+ switch (c) {
+ case 'i':
+ continue;
+ default:
+ return (DNS_R_SYNTAX);
+ }
+ }
+ if (!replace) {
+ *cp++ = c;
+ }
+ if (c == '\\') {
+ if (len == 0) {
+ return (DNS_R_SYNTAX);
+ }
+ c = *txt++;
+ if (c == 0) {
+ return (DNS_R_SYNTAX);
+ }
+ len--;
+ if (replace) {
+ switch (c) {
+ case '0':
+ return (DNS_R_SYNTAX);
+ case '1':
+ if (nsub < 1) {
+ nsub = 1;
+ }
+ break;
+ case '2':
+ if (nsub < 2) {
+ nsub = 2;
+ }
+ break;
+ case '3':
+ if (nsub < 3) {
+ nsub = 3;
+ }
+ break;
+ case '4':
+ if (nsub < 4) {
+ nsub = 4;
+ }
+ break;
+ case '5':
+ if (nsub < 5) {
+ nsub = 5;
+ }
+ break;
+ case '6':
+ if (nsub < 6) {
+ nsub = 6;
+ }
+ break;
+ case '7':
+ if (nsub < 7) {
+ nsub = 7;
+ }
+ break;
+ case '8':
+ if (nsub < 8) {
+ nsub = 8;
+ }
+ break;
+ case '9':
+ if (nsub < 9) {
+ nsub = 9;
+ }
+ break;
+ }
+ }
+ if (!replace) {
+ *cp++ = c;
+ }
+ }
+ }
+ if (!flags) {
+ return (DNS_R_SYNTAX);
+ }
+ *cp = '\0';
+ n = isc_regex_validate(regex);
+ if (n < 0 || nsub > (unsigned int)n) {
+ return (DNS_R_SYNTAX);
+ }
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+fromtext_naptr(ARGS_FROMTEXT) {
+ isc_token_t token;
+ dns_name_t name;
+ isc_buffer_t buffer;
+ unsigned char *regex;
+
+ REQUIRE(type == dns_rdatatype_naptr);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+ UNUSED(callbacks);
+
+ /*
+ * Order.
+ */
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
+ false));
+ if (token.value.as_ulong > 0xffffU) {
+ RETTOK(ISC_R_RANGE);
+ }
+ RETERR(uint16_tobuffer(token.value.as_ulong, target));
+
+ /*
+ * Preference.
+ */
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
+ false));
+ if (token.value.as_ulong > 0xffffU) {
+ RETTOK(ISC_R_RANGE);
+ }
+ RETERR(uint16_tobuffer(token.value.as_ulong, target));
+
+ /*
+ * Flags.
+ */
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
+ false));
+ RETTOK(txt_fromtext(&token.value.as_textregion, target));
+
+ /*
+ * Service.
+ */
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
+ false));
+ RETTOK(txt_fromtext(&token.value.as_textregion, target));
+
+ /*
+ * Regexp.
+ */
+ regex = isc_buffer_used(target);
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_qstring,
+ false));
+ RETTOK(txt_fromtext(&token.value.as_textregion, target));
+ RETTOK(txt_valid_regex(regex));
+
+ /*
+ * Replacement.
+ */
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+ false));
+ 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));
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+totext_naptr(ARGS_TOTEXT) {
+ isc_region_t region;
+ dns_name_t name;
+ dns_name_t prefix;
+ bool sub;
+ char buf[sizeof("64000")];
+ unsigned short num;
+
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+ REQUIRE(rdata->length != 0);
+
+ dns_name_init(&name, NULL);
+ dns_name_init(&prefix, NULL);
+
+ dns_rdata_toregion(rdata, &region);
+
+ /*
+ * Order.
+ */
+ num = uint16_fromregion(&region);
+ isc_region_consume(&region, 2);
+ snprintf(buf, sizeof(buf), "%u", num);
+ RETERR(str_totext(buf, target));
+ RETERR(str_totext(" ", target));
+
+ /*
+ * Preference.
+ */
+ num = uint16_fromregion(&region);
+ isc_region_consume(&region, 2);
+ snprintf(buf, sizeof(buf), "%u", num);
+ RETERR(str_totext(buf, target));
+ RETERR(str_totext(" ", target));
+
+ /*
+ * Flags.
+ */
+ RETERR(txt_totext(&region, true, target));
+ RETERR(str_totext(" ", target));
+
+ /*
+ * Service.
+ */
+ RETERR(txt_totext(&region, true, target));
+ RETERR(str_totext(" ", target));
+
+ /*
+ * Regexp.
+ */
+ RETERR(txt_totext(&region, true, target));
+ RETERR(str_totext(" ", target));
+
+ /*
+ * Replacement.
+ */
+ dns_name_fromregion(&name, &region);
+ sub = name_prefix(&name, tctx->origin, &prefix);
+ return (dns_name_totext(&prefix, sub, target));
+}
+
+static isc_result_t
+fromwire_naptr(ARGS_FROMWIRE) {
+ dns_name_t name;
+ isc_region_t sr;
+ unsigned char *regex;
+
+ REQUIRE(type == dns_rdatatype_naptr);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
+
+ dns_name_init(&name, NULL);
+
+ /*
+ * Order, preference.
+ */
+ isc_buffer_activeregion(source, &sr);
+ if (sr.length < 4) {
+ return (ISC_R_UNEXPECTEDEND);
+ }
+ RETERR(mem_tobuffer(target, sr.base, 4));
+ isc_buffer_forward(source, 4);
+
+ /*
+ * Flags.
+ */
+ RETERR(txt_fromwire(source, target));
+
+ /*
+ * Service.
+ */
+ RETERR(txt_fromwire(source, target));
+
+ /*
+ * Regexp.
+ */
+ regex = isc_buffer_used(target);
+ RETERR(txt_fromwire(source, target));
+ RETERR(txt_valid_regex(regex));
+
+ /*
+ * Replacement.
+ */
+ return (dns_name_fromwire(&name, source, dctx, options, target));
+}
+
+static isc_result_t
+towire_naptr(ARGS_TOWIRE) {
+ dns_name_t name;
+ dns_offsets_t offsets;
+ isc_region_t sr;
+
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+ REQUIRE(rdata->length != 0);
+
+ dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
+ /*
+ * Order, preference.
+ */
+ dns_rdata_toregion(rdata, &sr);
+ RETERR(mem_tobuffer(target, sr.base, 4));
+ isc_region_consume(&sr, 4);
+
+ /*
+ * Flags.
+ */
+ RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
+ isc_region_consume(&sr, sr.base[0] + 1);
+
+ /*
+ * Service.
+ */
+ RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
+ isc_region_consume(&sr, sr.base[0] + 1);
+
+ /*
+ * Regexp.
+ */
+ RETERR(mem_tobuffer(target, sr.base, sr.base[0] + 1));
+ isc_region_consume(&sr, sr.base[0] + 1);
+
+ /*
+ * Replacement.
+ */
+ dns_name_init(&name, offsets);
+ dns_name_fromregion(&name, &sr);
+ return (dns_name_towire(&name, cctx, target));
+}
+
+static int
+compare_naptr(ARGS_COMPARE) {
+ dns_name_t name1;
+ dns_name_t name2;
+ isc_region_t region1;
+ isc_region_t region2;
+ int order, len;
+
+ REQUIRE(rdata1->type == rdata2->type);
+ REQUIRE(rdata1->rdclass == rdata2->rdclass);
+ REQUIRE(rdata1->type == dns_rdatatype_naptr);
+ REQUIRE(rdata1->length != 0);
+ REQUIRE(rdata2->length != 0);
+
+ dns_rdata_toregion(rdata1, &region1);
+ dns_rdata_toregion(rdata2, &region2);
+
+ /*
+ * Order, preference.
+ */
+ order = memcmp(region1.base, region2.base, 4);
+ if (order != 0) {
+ return (order < 0 ? -1 : 1);
+ }
+ isc_region_consume(&region1, 4);
+ isc_region_consume(&region2, 4);
+
+ /*
+ * Flags.
+ */
+ len = ISC_MIN(region1.base[0], region2.base[0]);
+ order = memcmp(region1.base, region2.base, len + 1);
+ if (order != 0) {
+ return (order < 0 ? -1 : 1);
+ }
+ isc_region_consume(&region1, region1.base[0] + 1);
+ isc_region_consume(&region2, region2.base[0] + 1);
+
+ /*
+ * Service.
+ */
+ len = ISC_MIN(region1.base[0], region2.base[0]);
+ order = memcmp(region1.base, region2.base, len + 1);
+ if (order != 0) {
+ return (order < 0 ? -1 : 1);
+ }
+ isc_region_consume(&region1, region1.base[0] + 1);
+ isc_region_consume(&region2, region2.base[0] + 1);
+
+ /*
+ * Regexp.
+ */
+ len = ISC_MIN(region1.base[0], region2.base[0]);
+ order = memcmp(region1.base, region2.base, len + 1);
+ if (order != 0) {
+ return (order < 0 ? -1 : 1);
+ }
+ isc_region_consume(&region1, region1.base[0] + 1);
+ isc_region_consume(&region2, region2.base[0] + 1);
+
+ /*
+ * Replacement.
+ */
+ dns_name_init(&name1, NULL);
+ dns_name_init(&name2, NULL);
+
+ dns_name_fromregion(&name1, &region1);
+ dns_name_fromregion(&name2, &region2);
+
+ return (dns_name_rdatacompare(&name1, &name2));
+}
+
+static isc_result_t
+fromstruct_naptr(ARGS_FROMSTRUCT) {
+ dns_rdata_naptr_t *naptr = source;
+ isc_region_t region;
+
+ REQUIRE(type == dns_rdatatype_naptr);
+ REQUIRE(naptr != NULL);
+ REQUIRE(naptr->common.rdtype == type);
+ REQUIRE(naptr->common.rdclass == rdclass);
+ REQUIRE(naptr->flags != NULL || naptr->flags_len == 0);
+ REQUIRE(naptr->service != NULL || naptr->service_len == 0);
+ REQUIRE(naptr->regexp != NULL || naptr->regexp_len == 0);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ RETERR(uint16_tobuffer(naptr->order, target));
+ RETERR(uint16_tobuffer(naptr->preference, target));
+ RETERR(uint8_tobuffer(naptr->flags_len, target));
+ RETERR(mem_tobuffer(target, naptr->flags, naptr->flags_len));
+ RETERR(uint8_tobuffer(naptr->service_len, target));
+ RETERR(mem_tobuffer(target, naptr->service, naptr->service_len));
+ RETERR(uint8_tobuffer(naptr->regexp_len, target));
+ RETERR(mem_tobuffer(target, naptr->regexp, naptr->regexp_len));
+ dns_name_toregion(&naptr->replacement, &region);
+ return (isc_buffer_copyregion(target, &region));
+}
+
+static isc_result_t
+tostruct_naptr(ARGS_TOSTRUCT) {
+ dns_rdata_naptr_t *naptr = target;
+ isc_region_t r;
+ isc_result_t result;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+ REQUIRE(naptr != NULL);
+ REQUIRE(rdata->length != 0);
+
+ naptr->common.rdclass = rdata->rdclass;
+ naptr->common.rdtype = rdata->type;
+ ISC_LINK_INIT(&naptr->common, link);
+
+ naptr->flags = NULL;
+ naptr->service = NULL;
+ naptr->regexp = NULL;
+
+ dns_rdata_toregion(rdata, &r);
+
+ naptr->order = uint16_fromregion(&r);
+ isc_region_consume(&r, 2);
+
+ naptr->preference = uint16_fromregion(&r);
+ isc_region_consume(&r, 2);
+
+ naptr->flags_len = uint8_fromregion(&r);
+ isc_region_consume(&r, 1);
+ INSIST(naptr->flags_len <= r.length);
+ naptr->flags = mem_maybedup(mctx, r.base, naptr->flags_len);
+ if (naptr->flags == NULL) {
+ goto cleanup;
+ }
+ isc_region_consume(&r, naptr->flags_len);
+
+ naptr->service_len = uint8_fromregion(&r);
+ isc_region_consume(&r, 1);
+ INSIST(naptr->service_len <= r.length);
+ naptr->service = mem_maybedup(mctx, r.base, naptr->service_len);
+ if (naptr->service == NULL) {
+ goto cleanup;
+ }
+ isc_region_consume(&r, naptr->service_len);
+
+ naptr->regexp_len = uint8_fromregion(&r);
+ isc_region_consume(&r, 1);
+ INSIST(naptr->regexp_len <= r.length);
+ naptr->regexp = mem_maybedup(mctx, r.base, naptr->regexp_len);
+ if (naptr->regexp == NULL) {
+ goto cleanup;
+ }
+ isc_region_consume(&r, naptr->regexp_len);
+
+ dns_name_init(&name, NULL);
+ dns_name_fromregion(&name, &r);
+ dns_name_init(&naptr->replacement, NULL);
+ result = name_duporclone(&name, mctx, &naptr->replacement);
+ if (result != ISC_R_SUCCESS) {
+ goto cleanup;
+ }
+ naptr->mctx = mctx;
+ return (ISC_R_SUCCESS);
+
+cleanup:
+ if (mctx != NULL && naptr->flags != NULL) {
+ isc_mem_free(mctx, naptr->flags);
+ }
+ if (mctx != NULL && naptr->service != NULL) {
+ isc_mem_free(mctx, naptr->service);
+ }
+ if (mctx != NULL && naptr->regexp != NULL) {
+ isc_mem_free(mctx, naptr->regexp);
+ }
+ return (ISC_R_NOMEMORY);
+}
+
+static void
+freestruct_naptr(ARGS_FREESTRUCT) {
+ dns_rdata_naptr_t *naptr = source;
+
+ REQUIRE(naptr != NULL);
+ REQUIRE(naptr->common.rdtype == dns_rdatatype_naptr);
+
+ if (naptr->mctx == NULL) {
+ return;
+ }
+
+ if (naptr->flags != NULL) {
+ isc_mem_free(naptr->mctx, naptr->flags);
+ }
+ if (naptr->service != NULL) {
+ isc_mem_free(naptr->mctx, naptr->service);
+ }
+ if (naptr->regexp != NULL) {
+ isc_mem_free(naptr->mctx, naptr->regexp);
+ }
+ dns_name_free(&naptr->replacement, naptr->mctx);
+ naptr->mctx = NULL;
+}
+
+static isc_result_t
+additionaldata_naptr(ARGS_ADDLDATA) {
+ dns_name_t name;
+ dns_offsets_t offsets;
+ isc_region_t sr;
+ dns_rdatatype_t atype;
+ unsigned int i, flagslen;
+ char *cp;
+
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+
+ /*
+ * Order, preference.
+ */
+ dns_rdata_toregion(rdata, &sr);
+ isc_region_consume(&sr, 4);
+
+ /*
+ * Flags.
+ */
+ atype = 0;
+ flagslen = sr.base[0];
+ cp = (char *)&sr.base[1];
+ for (i = 0; i < flagslen; i++, cp++) {
+ if (*cp == 'S' || *cp == 's') {
+ atype = dns_rdatatype_srv;
+ break;
+ }
+ if (*cp == 'A' || *cp == 'a') {
+ atype = dns_rdatatype_a;
+ break;
+ }
+ }
+ isc_region_consume(&sr, flagslen + 1);
+
+ /*
+ * Service.
+ */
+ isc_region_consume(&sr, sr.base[0] + 1);
+
+ /*
+ * Regexp.
+ */
+ isc_region_consume(&sr, sr.base[0] + 1);
+
+ /*
+ * Replacement.
+ */
+ dns_name_init(&name, offsets);
+ dns_name_fromregion(&name, &sr);
+
+ if (atype != 0) {
+ return ((add)(arg, &name, atype));
+ }
+
+ return (ISC_R_SUCCESS);
+}
+
+static isc_result_t
+digest_naptr(ARGS_DIGEST) {
+ isc_region_t r1, r2;
+ unsigned int length, n;
+ isc_result_t result;
+ dns_name_t name;
+
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+
+ dns_rdata_toregion(rdata, &r1);
+ r2 = r1;
+ length = 0;
+
+ /*
+ * Order, preference.
+ */
+ length += 4;
+ isc_region_consume(&r2, 4);
+
+ /*
+ * Flags.
+ */
+ n = r2.base[0] + 1;
+ length += n;
+ isc_region_consume(&r2, n);
+
+ /*
+ * Service.
+ */
+ n = r2.base[0] + 1;
+ length += n;
+ isc_region_consume(&r2, n);
+
+ /*
+ * Regexp.
+ */
+ n = r2.base[0] + 1;
+ length += n;
+ isc_region_consume(&r2, n);
+
+ /*
+ * Digest the RR up to the replacement name.
+ */
+ r1.length = length;
+ result = (digest)(arg, &r1);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ /*
+ * Replacement.
+ */
+
+ dns_name_init(&name, NULL);
+ dns_name_fromregion(&name, &r2);
+
+ return (dns_name_digest(&name, digest, arg));
+}
+
+static bool
+checkowner_naptr(ARGS_CHECKOWNER) {
+ REQUIRE(type == dns_rdatatype_naptr);
+
+ UNUSED(name);
+ UNUSED(type);
+ UNUSED(rdclass);
+ UNUSED(wildcard);
+
+ return (true);
+}
+
+static bool
+checknames_naptr(ARGS_CHECKNAMES) {
+ REQUIRE(rdata->type == dns_rdatatype_naptr);
+
+ UNUSED(rdata);
+ UNUSED(owner);
+ UNUSED(bad);
+
+ return (true);
+}
+
+static int
+casecompare_naptr(ARGS_COMPARE) {
+ return (compare_naptr(rdata1, rdata2));
+}
+
+#endif /* RDATA_GENERIC_NAPTR_35_C */