/* * Copyright (C) 1999-2001 Internet Software Consortium. * * Permission to use, copy, modify, and 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 INTERNET SOFTWARE CONSORTIUM * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL * INTERNET SOFTWARE CONSORTIUM 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. */ /* $ISC: rootns.c,v 1.20.2.1 2001/10/03 22:30:17 gson Exp $ */ #include #include #include /* Required for HP/UX (and others?) */ #include #include #include #include #include #include #include #include #include #include #include #include #include static char root_ns[] = ";\n" "; Internet Root Nameservers\n" ";\n" "; Thu Sep 23 17:57:37 PDT 1999\n" ";\n" "$TTL 518400\n" ". 518400 IN NS A.ROOT-SERVERS.NET.\n" ". 518400 IN NS B.ROOT-SERVERS.NET.\n" ". 518400 IN NS C.ROOT-SERVERS.NET.\n" ". 518400 IN NS D.ROOT-SERVERS.NET.\n" ". 518400 IN NS E.ROOT-SERVERS.NET.\n" ". 518400 IN NS F.ROOT-SERVERS.NET.\n" ". 518400 IN NS G.ROOT-SERVERS.NET.\n" ". 518400 IN NS H.ROOT-SERVERS.NET.\n" ". 518400 IN NS I.ROOT-SERVERS.NET.\n" ". 518400 IN NS J.ROOT-SERVERS.NET.\n" ". 518400 IN NS K.ROOT-SERVERS.NET.\n" ". 518400 IN NS L.ROOT-SERVERS.NET.\n" ". 518400 IN NS M.ROOT-SERVERS.NET.\n" "A.ROOT-SERVERS.NET. 3600000 IN A 198.41.0.4\n" "B.ROOT-SERVERS.NET. 3600000 IN A 128.9.0.107\n" "C.ROOT-SERVERS.NET. 3600000 IN A 192.33.4.12\n" "D.ROOT-SERVERS.NET. 3600000 IN A 128.8.10.90\n" "E.ROOT-SERVERS.NET. 3600000 IN A 192.203.230.10\n" "F.ROOT-SERVERS.NET. 3600000 IN A 192.5.5.241\n" "G.ROOT-SERVERS.NET. 3600000 IN A 192.112.36.4\n" "H.ROOT-SERVERS.NET. 3600000 IN A 128.63.2.53\n" "I.ROOT-SERVERS.NET. 3600000 IN A 192.36.148.17\n" "J.ROOT-SERVERS.NET. 3600000 IN A 198.41.0.10\n" "K.ROOT-SERVERS.NET. 3600000 IN A 193.0.14.129\n" "L.ROOT-SERVERS.NET. 3600000 IN A 198.32.64.12\n" "M.ROOT-SERVERS.NET. 3600000 IN A 202.12.27.33\n"; static isc_result_t in_rootns(dns_rdataset_t *rootns, dns_name_t *name) { isc_result_t result; dns_rdata_t rdata = DNS_RDATA_INIT; dns_rdata_ns_t ns; if (!dns_rdataset_isassociated(rootns)) return (ISC_R_NOTFOUND); result = dns_rdataset_first(rootns); while (result == ISC_R_SUCCESS) { dns_rdataset_current(rootns, &rdata); result = dns_rdata_tostruct(&rdata, &ns, NULL); if (result != ISC_R_SUCCESS) return (result); if (dns_name_compare(name, &ns.name) == 0) return (ISC_R_SUCCESS); result = dns_rdataset_next(rootns); } if (result == ISC_R_NOMORE) result = ISC_R_NOTFOUND; return (result); } static isc_result_t check_node(dns_rdataset_t *rootns, dns_name_t *name, dns_rdatasetiter_t *rdsiter) { isc_result_t result; dns_rdataset_t rdataset; dns_rdataset_init(&rdataset); result = dns_rdatasetiter_first(rdsiter); while (result == ISC_R_SUCCESS) { dns_rdatasetiter_current(rdsiter, &rdataset); switch (rdataset.type) { case dns_rdatatype_a: case dns_rdatatype_aaaa: case dns_rdatatype_a6: result = in_rootns(rootns, name); if (result != ISC_R_SUCCESS) goto cleanup; break; case dns_rdatatype_ns: if (dns_name_compare(name, dns_rootname) == 0) break; /*FALLTHROUGH*/ default: result = ISC_R_FAILURE; goto cleanup; } dns_rdataset_disassociate(&rdataset); result = dns_rdatasetiter_next(rdsiter); } if (result == ISC_R_NOMORE) result = ISC_R_SUCCESS; cleanup: if (dns_rdataset_isassociated(&rdataset)) dns_rdataset_disassociate(&rdataset); return (result); } static isc_result_t check_hints(dns_db_t *db) { isc_result_t result; dns_rdataset_t rootns; dns_dbiterator_t *dbiter = NULL; dns_dbnode_t *node = NULL; isc_stdtime_t now; dns_fixedname_t fixname; dns_name_t *name; dns_rdatasetiter_t *rdsiter = NULL; isc_stdtime_get(&now); dns_fixedname_init(&fixname); name = dns_fixedname_name(&fixname); dns_rdataset_init(&rootns); (void)dns_db_find(db, dns_rootname, NULL, dns_rdatatype_ns, 0, now, NULL, name, &rootns, NULL); result = dns_db_createiterator(db, ISC_FALSE, &dbiter); if (result != ISC_R_SUCCESS) goto cleanup; result = dns_dbiterator_first(dbiter); while (result == ISC_R_SUCCESS) { result = dns_dbiterator_current(dbiter, &node, name); if (result != ISC_R_SUCCESS) goto cleanup; result = dns_db_allrdatasets(db, node, NULL, now, &rdsiter); if (result != ISC_R_SUCCESS) goto cleanup; result = check_node(&rootns, name, rdsiter); if (result != ISC_R_SUCCESS) goto cleanup; dns_rdatasetiter_destroy(&rdsiter); dns_db_detachnode(db, &node); result = dns_dbiterator_next(dbiter); } if (result == ISC_R_NOMORE) result = ISC_R_SUCCESS; cleanup: if (dns_rdataset_isassociated(&rootns)) dns_rdataset_disassociate(&rootns); if (rdsiter != NULL) dns_rdatasetiter_destroy(&rdsiter); if (node != NULL) dns_db_detachnode(db, &node); if (dbiter != NULL) dns_dbiterator_destroy(&dbiter); return (result); } isc_result_t dns_rootns_create(isc_mem_t *mctx, dns_rdataclass_t rdclass, const char *filename, dns_db_t **target) { isc_result_t result, eresult; isc_buffer_t source; size_t len; dns_rdatacallbacks_t callbacks; dns_db_t *db = NULL; REQUIRE(target != NULL && *target == NULL); result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone, rdclass, 0, NULL, &db); if (result != ISC_R_SUCCESS) return (result); dns_rdatacallbacks_init(&callbacks); len = strlen(root_ns); isc_buffer_init(&source, root_ns, len); isc_buffer_add(&source, len); result = dns_db_beginload(db, &callbacks.add, &callbacks.add_private); if (result != ISC_R_SUCCESS) return (result); if (filename != NULL) { /* * Load the hints from the specified filename. */ result = dns_master_loadfile(filename, &db->origin, &db->origin, db->rdclass, 0, &callbacks, db->mctx); } else if (rdclass == dns_rdataclass_in) { /* * Default to using the Internet root servers. */ result = dns_master_loadbuffer(&source, &db->origin, &db->origin, db->rdclass, 0, &callbacks, db->mctx); } else result = ISC_R_NOTFOUND; eresult = dns_db_endload(db, &callbacks.add_private); if (result == ISC_R_SUCCESS || result == DNS_R_SEENINCLUDE) result = eresult; if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE) goto db_detach; if (check_hints(db) != ISC_R_SUCCESS) isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL, DNS_LOGMODULE_HINTS, ISC_LOG_WARNING, "extra data in root hints '%s'", (filename != NULL) ? filename : ""); *target = db; return (ISC_R_SUCCESS); db_detach: dns_db_detach(&db); return (result); }