contrib/bind-9.2.4rc7/lib/dns/rdata/generic/ptr_12.c

   1 /*
   2  * Copyright (C) 2004  Internet Systems Consortium, Inc. ("ISC")
   3  * Copyright (C) 1998-2001  Internet Software Consortium.
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
  10  * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
  11  * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
  12  * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
  13  * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
  14  * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
  15  * PERFORMANCE OF THIS SOFTWARE.
  16  */
  17
  18 /* $Id: ptr_12.c,v 1.39.2.1 2004/03/09 06:11:33 marka Exp $ */
  19
  20 /* Reviewed: Thu Mar 16 14:05:12 PST 2000 by explorer */
  21
  22 #ifndef RDATA_GENERIC_PTR_12_C
  23 #define RDATA_GENERIC_PTR_12_C
  24
  25 #define RRTYPE_PTR_ATTRIBUTES (0)
  26
  27 static inline isc_result_t
  28 fromtext_ptr(ARGS_FROMTEXT) {
  29         isc_token_t token;
  30         dns_name_t name;
  31         isc_buffer_t buffer;
  32
  33         REQUIRE(type == 12);
  34
  35         UNUSED(type);
  36         UNUSED(rdclass);
  37         UNUSED(callbacks);
  38
  39         RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  40                                       ISC_FALSE));
  41
  42         dns_name_init(&name, NULL);
  43         buffer_fromregion(&buffer, &token.value.as_region);
  44         origin = (origin != NULL) ? origin : dns_rootname;
  45         RETTOK(dns_name_fromtext(&name, &buffer, origin, downcase, target));
  46         return (ISC_R_SUCCESS);
  47 }
  48
  49 static inline isc_result_t
  50 totext_ptr(ARGS_TOTEXT) {
  51         isc_region_t region;
  52         dns_name_t name;
  53         dns_name_t prefix;
  54         isc_boolean_t sub;
  55
  56         REQUIRE(rdata->type == 12);
  57         REQUIRE(rdata->length != 0);
  58
  59         dns_name_init(&name, NULL);
  60         dns_name_init(&prefix, NULL);
  61
  62         dns_rdata_toregion(rdata, &region);
  63         dns_name_fromregion(&name, &region);
  64
  65         sub = name_prefix(&name, tctx->origin, &prefix);
  66
  67         return (dns_name_totext(&prefix, sub, target));
  68 }
  69
  70 static inline isc_result_t
  71 fromwire_ptr(ARGS_FROMWIRE) {
  72         dns_name_t name;
  73
  74         REQUIRE(type == 12);
  75
  76         UNUSED(type);
  77         UNUSED(rdclass);
  78
  79         dns_decompress_setmethods(dctx, DNS_COMPRESS_GLOBAL14);
  80
  81         dns_name_init(&name, NULL);
  82         return (dns_name_fromwire(&name, source, dctx, downcase, target));
  83 }
  84
  85 static inline isc_result_t
  86 towire_ptr(ARGS_TOWIRE) {
  87         dns_name_t name;
  88         dns_offsets_t offsets;
  89         isc_region_t region;
  90
  91         REQUIRE(rdata->type == 12);
  92         REQUIRE(rdata->length != 0);
  93
  94         dns_compress_setmethods(cctx, DNS_COMPRESS_GLOBAL14);
  95
  96         dns_name_init(&name, offsets);
  97         dns_rdata_toregion(rdata, &region);
  98         dns_name_fromregion(&name, &region);
  99
 100         return (dns_name_towire(&name, cctx, target));
 101 }
 102
 103 static inline int
 104 compare_ptr(ARGS_COMPARE) {
 105         dns_name_t name1;
 106         dns_name_t name2;
 107         isc_region_t region1;
 108         isc_region_t region2;
 109
 110         REQUIRE(rdata1->type == rdata2->type);
 111         REQUIRE(rdata1->rdclass == rdata2->rdclass);
 112         REQUIRE(rdata1->type == 12);
 113         REQUIRE(rdata1->length != 0);
 114         REQUIRE(rdata2->length != 0);
 115
 116         dns_name_init(&name1, NULL);
 117         dns_name_init(&name2, NULL);
 118
 119         dns_rdata_toregion(rdata1, &region1);
 120         dns_rdata_toregion(rdata2, &region2);
 121
 122         dns_name_fromregion(&name1, &region1);
 123         dns_name_fromregion(&name2, &region2);
 124
 125         return (dns_name_rdatacompare(&name1, &name2));
 126 }
 127
 128 static inline isc_result_t
 129 fromstruct_ptr(ARGS_FROMSTRUCT) {
 130         dns_rdata_ptr_t *ptr = source;
 131         isc_region_t region;
 132
 133         REQUIRE(type == 12);
 134         REQUIRE(source != NULL);
 135         REQUIRE(ptr->common.rdtype == type);
 136         REQUIRE(ptr->common.rdclass == rdclass);
 137
 138         UNUSED(type);
 139         UNUSED(rdclass);
 140
 141         dns_name_toregion(&ptr->ptr, &region);
 142         return (isc_buffer_copyregion(target, &region));
 143 }
 144
 145 static inline isc_result_t
 146 tostruct_ptr(ARGS_TOSTRUCT) {
 147         isc_region_t region;
 148         dns_rdata_ptr_t *ptr = target;
 149         dns_name_t name;
 150
 151         REQUIRE(rdata->type == 12);
 152         REQUIRE(target != NULL);
 153         REQUIRE(rdata->length != 0);
 154
 155         ptr->common.rdclass = rdata->rdclass;
 156         ptr->common.rdtype = rdata->type;
 157         ISC_LINK_INIT(&ptr->common, link);
 158
 159         dns_name_init(&name, NULL);
 160         dns_rdata_toregion(rdata, &region);
 161         dns_name_fromregion(&name, &region);
 162         dns_name_init(&ptr->ptr, NULL);
 163         RETERR(name_duporclone(&name, mctx, &ptr->ptr));
 164         ptr->mctx = mctx;
 165         return (ISC_R_SUCCESS);
 166 }
 167
 168 static inline void
 169 freestruct_ptr(ARGS_FREESTRUCT) {
 170         dns_rdata_ptr_t *ptr = source;
 171
 172         REQUIRE(source != NULL);
 173         REQUIRE(ptr->common.rdtype == 12);
 174
 175         if (ptr->mctx == NULL)
 176                 return;
 177
 178         dns_name_free(&ptr->ptr, ptr->mctx);
 179         ptr->mctx = NULL;
 180 }
 181
 182 static inline isc_result_t
 183 additionaldata_ptr(ARGS_ADDLDATA) {
 184         REQUIRE(rdata->type == 12);
 185
 186         UNUSED(rdata);
 187         UNUSED(add);
 188         UNUSED(arg);
 189
 190         return (ISC_R_SUCCESS);
 191 }
 192
 193 static inline isc_result_t
 194 digest_ptr(ARGS_DIGEST) {
 195         isc_region_t r;
 196         dns_name_t name;
 197
 198         REQUIRE(rdata->type == 12);
 199
 200         dns_rdata_toregion(rdata, &r);
 201         dns_name_init(&name, NULL);
 202         dns_name_fromregion(&name, &r);
 203
 204         return (dns_name_digest(&name, digest, arg));
 205 }
 206
 207 #endif  /* RDATA_GENERIC_PTR_12_C */