kx_36.c

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00001 /*
00002  * Copyright (C) 2004, 2005, 2007, 2009  Internet Systems Consortium, Inc. ("ISC")
00003  * Copyright (C) 1999-2001, 2003  Internet Software Consortium.
00004  *
00005  * Permission to use, copy, modify, and/or distribute this software for any
00006  * purpose with or without fee is hereby granted, provided that the above
00007  * copyright notice and this permission notice appear in all copies.
00008  *
00009  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
00010  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
00011  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
00012  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
00013  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
00014  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
00015  * PERFORMANCE OF THIS SOFTWARE.
00016  */
00017 
00018 /* $Id: kx_36.c,v 1.47 2009/12/04 22:06:37 tbox Exp $ */
00019 
00020 /* Reviewed: Thu Mar 16 17:24:54 PST 2000 by explorer */
00021 
00022 /* RFC2230 */
00023 
00024 #ifndef RDATA_IN_1_KX_36_C
00025 #define RDATA_IN_1_KX_36_C
00026 
00027 #define RRTYPE_KX_ATTRIBUTES (0)
00028 
00029 static inline isc_result_t
00030 fromtext_in_kx(ARGS_FROMTEXT) {
00031         isc_token_t token;
00032         dns_name_t name;
00033         isc_buffer_t buffer;
00034 
00035         REQUIRE(type == 36);
00036         REQUIRE(rdclass == 1);
00037 
00038         UNUSED(type);
00039         UNUSED(rdclass);
00040         UNUSED(callbacks);
00041 
00042         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
00043                                       ISC_FALSE));
00044         if (token.value.as_ulong > 0xffffU)
00045                 RETTOK(ISC_R_RANGE);
00046         RETERR(uint16_tobuffer(token.value.as_ulong, target));
00047 
00048         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
00049                                       ISC_FALSE));
00050         dns_name_init(&name, NULL);
00051         buffer_fromregion(&buffer, &token.value.as_region);
00052         origin = (origin != NULL) ? origin : dns_rootname;
00053         RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
00054         return (ISC_R_SUCCESS);
00055 }
00056 
00057 static inline isc_result_t
00058 totext_in_kx(ARGS_TOTEXT) {
00059         isc_region_t region;
00060         dns_name_t name;
00061         dns_name_t prefix;
00062         isc_boolean_t sub;
00063         char buf[sizeof("64000")];
00064         unsigned short num;
00065 
00066         REQUIRE(rdata->type == 36);
00067         REQUIRE(rdata->rdclass == 1);
00068         REQUIRE(rdata->length != 0);
00069 
00070         dns_name_init(&name, NULL);
00071         dns_name_init(&prefix, NULL);
00072 
00073         dns_rdata_toregion(rdata, &region);
00074         num = uint16_fromregion(&region);
00075         isc_region_consume(&region, 2);
00076         sprintf(buf, "%u", num);
00077         RETERR(str_totext(buf, target));
00078 
00079         RETERR(str_totext(" ", target));
00080 
00081         dns_name_fromregion(&name, &region);
00082         sub = name_prefix(&name, tctx->origin, &prefix);
00083         return (dns_name_totext(&prefix, sub, target));
00084 }
00085 
00086 static inline isc_result_t
00087 fromwire_in_kx(ARGS_FROMWIRE) {
00088         dns_name_t name;
00089         isc_region_t sregion;
00090 
00091         REQUIRE(type == 36);
00092         REQUIRE(rdclass == 1);
00093 
00094         UNUSED(type);
00095         UNUSED(rdclass);
00096 
00097         dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
00098 
00099         dns_name_init(&name, NULL);
00100 
00101         isc_buffer_activeregion(source, &sregion);
00102         if (sregion.length < 2)
00103                 return (ISC_R_UNEXPECTEDEND);
00104         RETERR(mem_tobuffer(target, sregion.base, 2));
00105         isc_buffer_forward(source, 2);
00106         return (dns_name_fromwire(&name, source, dctx, options, target));
00107 }
00108 
00109 static inline isc_result_t
00110 towire_in_kx(ARGS_TOWIRE) {
00111         dns_name_t name;
00112         dns_offsets_t offsets;
00113         isc_region_t region;
00114 
00115         REQUIRE(rdata->type == 36);
00116         REQUIRE(rdata->rdclass == 1);
00117         REQUIRE(rdata->length != 0);
00118 
00119         dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
00120         dns_rdata_toregion(rdata, &region);
00121         RETERR(mem_tobuffer(target, region.base, 2));
00122         isc_region_consume(&region, 2);
00123 
00124         dns_name_init(&name, offsets);
00125         dns_name_fromregion(&name, &region);
00126 
00127         return (dns_name_towire(&name, cctx, target));
00128 }
00129 
00130 static inline int
00131 compare_in_kx(ARGS_COMPARE) {
00132         dns_name_t name1;
00133         dns_name_t name2;
00134         isc_region_t region1;
00135         isc_region_t region2;
00136         int order;
00137 
00138         REQUIRE(rdata1->type == rdata2->type);
00139         REQUIRE(rdata1->rdclass == rdata2->rdclass);
00140         REQUIRE(rdata1->type == 36);
00141         REQUIRE(rdata1->rdclass == 1);
00142         REQUIRE(rdata1->length != 0);
00143         REQUIRE(rdata2->length != 0);
00144 
00145         order = memcmp(rdata1->data, rdata2->data, 2);
00146         if (order != 0)
00147                 return (order < 0 ? -1 : 1);
00148 
00149         dns_name_init(&name1, NULL);
00150         dns_name_init(&name2, NULL);
00151 
00152         dns_rdata_toregion(rdata1, &region1);
00153         dns_rdata_toregion(rdata2, &region2);
00154 
00155         isc_region_consume(&region1, 2);
00156         isc_region_consume(&region2, 2);
00157 
00158         dns_name_fromregion(&name1, &region1);
00159         dns_name_fromregion(&name2, &region2);
00160 
00161         return (dns_name_rdatacompare(&name1, &name2));
00162 }
00163 
00164 static inline isc_result_t
00165 fromstruct_in_kx(ARGS_FROMSTRUCT) {
00166         dns_rdata_in_kx_t *kx = source;
00167         isc_region_t region;
00168 
00169         REQUIRE(type == 36);
00170         REQUIRE(rdclass == 1);
00171         REQUIRE(source != NULL);
00172         REQUIRE(kx->common.rdtype == type);
00173         REQUIRE(kx->common.rdclass == rdclass);
00174 
00175         UNUSED(type);
00176         UNUSED(rdclass);
00177 
00178         RETERR(uint16_tobuffer(kx->preference, target));
00179         dns_name_toregion(&kx->exchange, &region);
00180         return (isc_buffer_copyregion(target, &region));
00181 }
00182 
00183 static inline isc_result_t
00184 tostruct_in_kx(ARGS_TOSTRUCT) {
00185         isc_region_t region;
00186         dns_rdata_in_kx_t *kx = target;
00187         dns_name_t name;
00188 
00189         REQUIRE(rdata->type == 36);
00190         REQUIRE(rdata->rdclass == 1);
00191         REQUIRE(target != NULL);
00192         REQUIRE(rdata->length != 0);
00193 
00194         kx->common.rdclass = rdata->rdclass;
00195         kx->common.rdtype = rdata->type;
00196         ISC_LINK_INIT(&kx->common, link);
00197 
00198         dns_name_init(&name, NULL);
00199         dns_rdata_toregion(rdata, &region);
00200 
00201         kx->preference = uint16_fromregion(&region);
00202         isc_region_consume(&region, 2);
00203 
00204         dns_name_fromregion(&name, &region);
00205         dns_name_init(&kx->exchange, NULL);
00206         RETERR(name_duporclone(&name, mctx, &kx->exchange));
00207         kx->mctx = mctx;
00208         return (ISC_R_SUCCESS);
00209 }
00210 
00211 static inline void
00212 freestruct_in_kx(ARGS_FREESTRUCT) {
00213         dns_rdata_in_kx_t *kx = source;
00214 
00215         REQUIRE(source != NULL);
00216         REQUIRE(kx->common.rdclass == 1);
00217         REQUIRE(kx->common.rdtype == 36);
00218 
00219         if (kx->mctx == NULL)
00220                 return;
00221 
00222         dns_name_free(&kx->exchange, kx->mctx);
00223         kx->mctx = NULL;
00224 }
00225 
00226 static inline isc_result_t
00227 additionaldata_in_kx(ARGS_ADDLDATA) {
00228         dns_name_t name;
00229         dns_offsets_t offsets;
00230         isc_region_t region;
00231 
00232         REQUIRE(rdata->type == 36);
00233         REQUIRE(rdata->rdclass == 1);
00234 
00235         dns_name_init(&name, offsets);
00236         dns_rdata_toregion(rdata, &region);
00237         isc_region_consume(&region, 2);
00238         dns_name_fromregion(&name, &region);
00239 
00240         return ((add)(arg, &name, dns_rdatatype_a));
00241 }
00242 
00243 static inline isc_result_t
00244 digest_in_kx(ARGS_DIGEST) {
00245         isc_region_t r1, r2;
00246         dns_name_t name;
00247 
00248         REQUIRE(rdata->type == 36);
00249         REQUIRE(rdata->rdclass == 1);
00250 
00251         dns_rdata_toregion(rdata, &r1);
00252         r2 = r1;
00253         isc_region_consume(&r2, 2);
00254         r1.length = 2;
00255         RETERR((digest)(arg, &r1));
00256         dns_name_init(&name, NULL);
00257         dns_name_fromregion(&name, &r2);
00258         return (dns_name_digest(&name, digest, arg));
00259 }
00260 
00261 static inline isc_boolean_t
00262 checkowner_in_kx(ARGS_CHECKOWNER) {
00263 
00264         REQUIRE(type == 36);
00265         REQUIRE(rdclass == 1);
00266 
00267         UNUSED(name);
00268         UNUSED(type);
00269         UNUSED(rdclass);
00270         UNUSED(wildcard);
00271 
00272         return (ISC_TRUE);
00273 }
00274 
00275 static inline isc_boolean_t
00276 checknames_in_kx(ARGS_CHECKNAMES) {
00277 
00278         REQUIRE(rdata->type == 36);
00279         REQUIRE(rdata->rdclass == 1);
00280 
00281         UNUSED(rdata);
00282         UNUSED(owner);
00283         UNUSED(bad);
00284 
00285         return (ISC_TRUE);
00286 }
00287 
00288 static inline int
00289 casecompare_in_kx(ARGS_COMPARE) {
00290         return (compare_in_kx(rdata1, rdata2));
00291 }
00292 
00293 #endif  /* RDATA_IN_1_KX_36_C */

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