/contrib/bind9/lib/dns/rdata/generic/afsdb_18.c

https://bitbucket.org/freebsd/freebsd-head/ · C · 313 lines · 222 code · 66 blank · 25 comment · 44 complexity · f7f8aeee4f995e2f2b439410443074ff MD5 · raw file

  1. /*
  2. * Copyright (C) 2004, 2005, 2007, 2009 Internet Systems Consortium, Inc. ("ISC")
  3. * Copyright (C) 1999-2001, 2003 Internet Software Consortium.
  4. *
  5. * Permission to use, copy, modify, and/or 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. /* $Id: afsdb_18.c,v 1.49 2009/12/04 22:06:37 tbox Exp $ */
  18. /* Reviewed: Wed Mar 15 14:59:00 PST 2000 by explorer */
  19. /* RFC1183 */
  20. #ifndef RDATA_GENERIC_AFSDB_18_C
  21. #define RDATA_GENERIC_AFSDB_18_C
  22. #define RRTYPE_AFSDB_ATTRIBUTES (0)
  23. static inline isc_result_t
  24. fromtext_afsdb(ARGS_FROMTEXT) {
  25. isc_token_t token;
  26. isc_buffer_t buffer;
  27. dns_name_t name;
  28. isc_boolean_t ok;
  29. REQUIRE(type == 18);
  30. UNUSED(type);
  31. UNUSED(rdclass);
  32. UNUSED(callbacks);
  33. /*
  34. * Subtype.
  35. */
  36. RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_number,
  37. ISC_FALSE));
  38. if (token.value.as_ulong > 0xffffU)
  39. RETTOK(ISC_R_RANGE);
  40. RETERR(uint16_tobuffer(token.value.as_ulong, target));
  41. /*
  42. * Hostname.
  43. */
  44. RETERR(isc_lex_getmastertoken(lexer, &token, isc_tokentype_string,
  45. ISC_FALSE));
  46. dns_name_init(&name, NULL);
  47. buffer_fromregion(&buffer, &token.value.as_region);
  48. origin = (origin != NULL) ? origin : dns_rootname;
  49. RETTOK(dns_name_fromtext(&name, &buffer, origin, options, target));
  50. ok = ISC_TRUE;
  51. if ((options & DNS_RDATA_CHECKNAMES) != 0)
  52. ok = dns_name_ishostname(&name, ISC_FALSE);
  53. if (!ok && (options & DNS_RDATA_CHECKNAMESFAIL) != 0)
  54. RETTOK(DNS_R_BADNAME);
  55. if (!ok && callbacks != NULL)
  56. warn_badname(&name, lexer, callbacks);
  57. return (ISC_R_SUCCESS);
  58. }
  59. static inline isc_result_t
  60. totext_afsdb(ARGS_TOTEXT) {
  61. dns_name_t name;
  62. dns_name_t prefix;
  63. isc_region_t region;
  64. char buf[sizeof("64000 ")];
  65. isc_boolean_t sub;
  66. unsigned int num;
  67. REQUIRE(rdata->type == 18);
  68. REQUIRE(rdata->length != 0);
  69. dns_name_init(&name, NULL);
  70. dns_name_init(&prefix, NULL);
  71. dns_rdata_toregion(rdata, &region);
  72. num = uint16_fromregion(&region);
  73. isc_region_consume(&region, 2);
  74. sprintf(buf, "%u ", num);
  75. RETERR(str_totext(buf, target));
  76. dns_name_fromregion(&name, &region);
  77. sub = name_prefix(&name, tctx->origin, &prefix);
  78. return (dns_name_totext(&prefix, sub, target));
  79. }
  80. static inline isc_result_t
  81. fromwire_afsdb(ARGS_FROMWIRE) {
  82. dns_name_t name;
  83. isc_region_t sr;
  84. isc_region_t tr;
  85. REQUIRE(type == 18);
  86. UNUSED(type);
  87. UNUSED(rdclass);
  88. dns_decompress_setmethods(dctx, DNS_COMPRESS_NONE);
  89. dns_name_init(&name, NULL);
  90. isc_buffer_activeregion(source, &sr);
  91. isc_buffer_availableregion(target, &tr);
  92. if (tr.length < 2)
  93. return (ISC_R_NOSPACE);
  94. if (sr.length < 2)
  95. return (ISC_R_UNEXPECTEDEND);
  96. memcpy(tr.base, sr.base, 2);
  97. isc_buffer_forward(source, 2);
  98. isc_buffer_add(target, 2);
  99. return (dns_name_fromwire(&name, source, dctx, options, target));
  100. }
  101. static inline isc_result_t
  102. towire_afsdb(ARGS_TOWIRE) {
  103. isc_region_t tr;
  104. isc_region_t sr;
  105. dns_name_t name;
  106. dns_offsets_t offsets;
  107. REQUIRE(rdata->type == 18);
  108. REQUIRE(rdata->length != 0);
  109. dns_compress_setmethods(cctx, DNS_COMPRESS_NONE);
  110. isc_buffer_availableregion(target, &tr);
  111. dns_rdata_toregion(rdata, &sr);
  112. if (tr.length < 2)
  113. return (ISC_R_NOSPACE);
  114. memcpy(tr.base, sr.base, 2);
  115. isc_region_consume(&sr, 2);
  116. isc_buffer_add(target, 2);
  117. dns_name_init(&name, offsets);
  118. dns_name_fromregion(&name, &sr);
  119. return (dns_name_towire(&name, cctx, target));
  120. }
  121. static inline int
  122. compare_afsdb(ARGS_COMPARE) {
  123. int result;
  124. dns_name_t name1;
  125. dns_name_t name2;
  126. isc_region_t region1;
  127. isc_region_t region2;
  128. REQUIRE(rdata1->type == rdata2->type);
  129. REQUIRE(rdata1->rdclass == rdata2->rdclass);
  130. REQUIRE(rdata1->type == 18);
  131. REQUIRE(rdata1->length != 0);
  132. REQUIRE(rdata2->length != 0);
  133. result = memcmp(rdata1->data, rdata2->data, 2);
  134. if (result != 0)
  135. return (result < 0 ? -1 : 1);
  136. dns_name_init(&name1, NULL);
  137. dns_name_init(&name2, NULL);
  138. dns_rdata_toregion(rdata1, &region1);
  139. dns_rdata_toregion(rdata2, &region2);
  140. isc_region_consume(&region1, 2);
  141. isc_region_consume(&region2, 2);
  142. dns_name_fromregion(&name1, &region1);
  143. dns_name_fromregion(&name2, &region2);
  144. return (dns_name_rdatacompare(&name1, &name2));
  145. }
  146. static inline isc_result_t
  147. fromstruct_afsdb(ARGS_FROMSTRUCT) {
  148. dns_rdata_afsdb_t *afsdb = source;
  149. isc_region_t region;
  150. REQUIRE(type == 18);
  151. REQUIRE(source != NULL);
  152. REQUIRE(afsdb->common.rdclass == rdclass);
  153. REQUIRE(afsdb->common.rdtype == type);
  154. UNUSED(type);
  155. UNUSED(rdclass);
  156. RETERR(uint16_tobuffer(afsdb->subtype, target));
  157. dns_name_toregion(&afsdb->server, &region);
  158. return (isc_buffer_copyregion(target, &region));
  159. }
  160. static inline isc_result_t
  161. tostruct_afsdb(ARGS_TOSTRUCT) {
  162. isc_region_t region;
  163. dns_rdata_afsdb_t *afsdb = target;
  164. dns_name_t name;
  165. REQUIRE(rdata->type == 18);
  166. REQUIRE(target != NULL);
  167. REQUIRE(rdata->length != 0);
  168. afsdb->common.rdclass = rdata->rdclass;
  169. afsdb->common.rdtype = rdata->type;
  170. ISC_LINK_INIT(&afsdb->common, link);
  171. dns_name_init(&afsdb->server, NULL);
  172. dns_rdata_toregion(rdata, &region);
  173. afsdb->subtype = uint16_fromregion(&region);
  174. isc_region_consume(&region, 2);
  175. dns_name_init(&name, NULL);
  176. dns_name_fromregion(&name, &region);
  177. RETERR(name_duporclone(&name, mctx, &afsdb->server));
  178. afsdb->mctx = mctx;
  179. return (ISC_R_SUCCESS);
  180. }
  181. static inline void
  182. freestruct_afsdb(ARGS_FREESTRUCT) {
  183. dns_rdata_afsdb_t *afsdb = source;
  184. REQUIRE(source != NULL);
  185. REQUIRE(afsdb->common.rdtype == 18);
  186. if (afsdb->mctx == NULL)
  187. return;
  188. dns_name_free(&afsdb->server, afsdb->mctx);
  189. afsdb->mctx = NULL;
  190. }
  191. static inline isc_result_t
  192. additionaldata_afsdb(ARGS_ADDLDATA) {
  193. dns_name_t name;
  194. dns_offsets_t offsets;
  195. isc_region_t region;
  196. REQUIRE(rdata->type == 18);
  197. dns_name_init(&name, offsets);
  198. dns_rdata_toregion(rdata, &region);
  199. isc_region_consume(&region, 2);
  200. dns_name_fromregion(&name, &region);
  201. return ((add)(arg, &name, dns_rdatatype_a));
  202. }
  203. static inline isc_result_t
  204. digest_afsdb(ARGS_DIGEST) {
  205. isc_region_t r1, r2;
  206. dns_name_t name;
  207. REQUIRE(rdata->type == 18);
  208. dns_rdata_toregion(rdata, &r1);
  209. r2 = r1;
  210. isc_region_consume(&r2, 2);
  211. r1.length = 2;
  212. RETERR((digest)(arg, &r1));
  213. dns_name_init(&name, NULL);
  214. dns_name_fromregion(&name, &r2);
  215. return (dns_name_digest(&name, digest, arg));
  216. }
  217. static inline isc_boolean_t
  218. checkowner_afsdb(ARGS_CHECKOWNER) {
  219. REQUIRE(type == 18);
  220. UNUSED(name);
  221. UNUSED(type);
  222. UNUSED(rdclass);
  223. UNUSED(wildcard);
  224. return (ISC_TRUE);
  225. }
  226. static inline isc_boolean_t
  227. checknames_afsdb(ARGS_CHECKNAMES) {
  228. isc_region_t region;
  229. dns_name_t name;
  230. REQUIRE(rdata->type == 18);
  231. UNUSED(owner);
  232. dns_rdata_toregion(rdata, &region);
  233. isc_region_consume(&region, 2);
  234. dns_name_init(&name, NULL);
  235. dns_name_fromregion(&name, &region);
  236. if (!dns_name_ishostname(&name, ISC_FALSE)) {
  237. if (bad != NULL)
  238. dns_name_clone(&name, bad);
  239. return (ISC_FALSE);
  240. }
  241. return (ISC_TRUE);
  242. }
  243. static inline int
  244. casecompare_afsdb(ARGS_COMPARE) {
  245. return (compare_afsdb(rdata1, rdata2));
  246. }
  247. #endif /* RDATA_GENERIC_AFSDB_18_C */