--- /dev/null
+/*
+ * Copyright (C) 2009 Internet Systems Consortium, Inc. ("ISC")
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
+ * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
+ * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+ * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
+ * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+/* $Id: hip_55.c,v 1.2 2009/02/26 06:09:19 marka Exp $ */
+
+/* reviewed: TBC */
+
+/* RFC 5205 */
+
+#ifndef RDATA_GENERIC_HIP_5_C
+#define RDATA_GENERIC_HIP_5_C
+
+#define RRTYPE_HIP_ATTRIBUTES (0)
+
+static inline 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 == 55);
+
+ 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,
+ ISC_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,
+ ISC_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(len, &hit_len));
+
+ /*
+ * Public key (base64).
+ */
+ start = isc_buffer_used(target);
+ RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
+ ISC_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(len, &key_len));
+
+ /*
+ * Rendezvous Servers.
+ */
+ dns_name_init(&name, NULL);
+ do {
+ RETERR(isc_lex_getmastertoken(lexer, &token,
+ isc_tokentype_string,
+ ISC_TRUE));
+ if (token.type != isc_tokentype_string)
+ break;
+ buffer_fromregion(&buffer, &token.value.as_region);
+ origin = (origin != NULL) ? origin : dns_rootname;
+ 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 inline isc_result_t
+totext_hip(ARGS_TOTEXT) {
+ isc_region_t region;
+ dns_name_t name;
+ dns_name_t prefix;
+ isc_boolean_t sub;
+ size_t length, key_len, hit_len;
+ unsigned char algorithm;
+ char buf[sizeof("225 ")];
+
+ REQUIRE(rdata->type == 55);
+ REQUIRE(rdata->length != 0);
+
+ dns_rdata_toregion(rdata, ®ion);
+
+ hit_len = uint8_fromregion(®ion);
+ isc_region_consume(®ion, 1);
+
+ algorithm = uint8_fromregion(®ion);
+ isc_region_consume(®ion, 1);
+
+ key_len = uint16_fromregion(®ion);
+ isc_region_consume(®ion, 2);
+
+ if ((tctx->flags & DNS_STYLEFLAG_MULTILINE) != 0)
+ RETERR(str_totext("( ", target));
+
+ /*
+ * Algorithm
+ */
+ sprintf(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(®ion, 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(®ion, 1, "", target));
+ region.length = length - key_len;
+ RETERR(str_totext(tctx->linebreak, target));
+
+ /*
+ * Rendezvous Servers.
+ */
+ dns_name_init(&name, NULL);
+ dns_name_init(&prefix, NULL);
+ while (region.length > 0) {
+ dns_name_fromregion(&name, ®ion);
+
+ sub = name_prefix(&name, tctx->origin, &prefix);
+ RETERR(dns_name_totext(&prefix, sub, target));
+ isc_region_consume(®ion, 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 inline isc_result_t
+fromwire_hip(ARGS_FROMWIRE) {
+ isc_region_t region, rr;
+ dns_name_t name;
+ isc_uint8_t hit_len;
+ isc_uint16_t key_len;
+
+ REQUIRE(type == 55);
+
+ UNUSED(type);
+ UNUSED(rdclass);
+
+ isc_buffer_activeregion(source, ®ion);
+ if (region.length < 4U)
+ RETERR(DNS_R_FORMERR);
+
+ rr = region;
+ hit_len = uint8_fromregion(®ion);
+ if (hit_len == 0)
+ RETERR(DNS_R_FORMERR);
+ isc_region_consume(®ion, 2); /* hit length + algorithm */
+ key_len = uint16_fromregion(®ion);
+ if (key_len == 0)
+ RETERR(DNS_R_FORMERR);
+ isc_region_consume(®ion, 2);
+ if (region.length < hit_len + key_len)
+ RETERR(DNS_R_FORMERR);
+
+ RETERR(mem_tobuffer(target, rr.base, 4 + hit_len + key_len));
+ isc_buffer_forward(source, 4 + hit_len + key_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 inline isc_result_t
+towire_hip(ARGS_TOWIRE) {
+ isc_region_t region;
+
+ REQUIRE(rdata->type == 55);
+ REQUIRE(rdata->length != 0);
+
+ UNUSED(cctx);
+
+ dns_rdata_toregion(rdata, ®ion);
+ return (mem_tobuffer(target, region.base, region.length));
+}
+
+static inline 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 == 55);
+ REQUIRE(rdata1->length != 0);
+ REQUIRE(rdata2->length != 0);
+
+ dns_rdata_toregion(rdata1, ®ion1);
+ dns_rdata_toregion(rdata2, ®ion2);
+ return (isc_region_compare(®ion1, ®ion2));
+}
+
+static inline isc_result_t
+fromstruct_hip(ARGS_FROMSTRUCT) {
+ dns_rdata_hip_t *hip = source;
+ dns_rdata_hip_t myhip;
+ isc_result_t result;
+
+ REQUIRE(type == 55);
+ REQUIRE(source != 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))
+ /* empty */;
+
+ return(mem_tobuffer(target, hip->servers, hip->servers_len));
+}
+
+static inline isc_result_t
+tostruct_hip(ARGS_TOSTRUCT) {
+ isc_region_t region;
+ dns_rdata_hip_t *hip = target;
+
+ REQUIRE(rdata->type == 55);
+ REQUIRE(target != 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, ®ion);
+
+ hip->hit_len = uint8_fromregion(®ion);
+ isc_region_consume(®ion, 1);
+
+ hip->algorithm = uint8_fromregion(®ion);
+ isc_region_consume(®ion, 1);
+
+ hip->key_len = uint16_fromregion(®ion);
+ isc_region_consume(®ion, 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(®ion, hip->hit_len);
+
+ hip->key = mem_maybedup(mctx, region.base, hip->key_len);
+ if (hip->key == NULL)
+ goto cleanup;
+ isc_region_consume(®ion, 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 inline void
+freestruct_hip(ARGS_FREESTRUCT) {
+ dns_rdata_hip_t *hip = source;
+
+ REQUIRE(source != 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 inline isc_result_t
+additionaldata_hip(ARGS_ADDLDATA) {
+ UNUSED(rdata);
+ UNUSED(add);
+ UNUSED(arg);
+
+ REQUIRE(rdata->type == 55);
+
+ return (ISC_R_SUCCESS);
+}
+
+static inline isc_result_t
+digest_hip(ARGS_DIGEST) {
+ isc_region_t r;
+
+ REQUIRE(rdata->type == 55);
+
+ dns_rdata_toregion(rdata, &r);
+ return ((digest)(arg, &r));
+}
+
+static inline isc_boolean_t
+checkowner_hip(ARGS_CHECKOWNER) {
+
+ REQUIRE(type == 55);
+
+ UNUSED(name);
+ UNUSED(type);
+ UNUSED(rdclass);
+ UNUSED(wildcard);
+
+ return (ISC_TRUE);
+}
+
+static inline isc_boolean_t
+checknames_hip(ARGS_CHECKNAMES) {
+
+ REQUIRE(rdata->type == 55);
+
+ UNUSED(rdata);
+ UNUSED(owner);
+ UNUSED(bad);
+
+ return (ISC_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, ®ion);
+ hip->offset += name.length;
+ INSIST(hip->offset <= hip->servers_len);
+ return (ISC_R_SUCCESS);
+}
+
+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, ®ion);
+
+ INSIST(name->length + hip->offset <= hip->servers_len);
+}
+
+#endif /* RDATA_GENERIC_HIP_5_C */
projects / thirdparty / bind9.git / commitdiff
