lib/dns/rootns.c

	rootns.c revision 63b0524b961b6dce1aa18488d7175ca4ee17778f
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews/*
1fdd2470b625a58b57d0b155e6caf8c4fc0afe8aAutomatic Updater * Copyright (C) 2004, 2005, 2007, 2008, 2010, 2012-2015  Internet Systems Consortium, Inc. ("ISC")
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * Copyright (C) 1999-2002  Internet Software Consortium.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews *
4a14ce5ba00ab7bc55c99ffdcf59c7a4ab902721Automatic Updater * Permission to use, copy, modify, and/or distribute this software for any
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * purpose with or without fee is hereby granted, provided that the above
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * copyright notice and this permission notice appear in all copies.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews *
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * AND FITNESS.  IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews * PERFORMANCE OF THIS SOFTWARE.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews */
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews/* $Id: rootns.c,v 1.40.476.1 2012/02/07 00:44:14 each Exp $ */
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews/*! \file */
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
e21a2904f02a03fa06b6db04d348f65fe9c67b2bMark Andrews#include <config.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <isc/buffer.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <isc/string.h>     /* Required for HP/UX (and others?) */
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <isc/util.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/callbacks.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/db.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/dbiterator.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/fixedname.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/log.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/master.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdata.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdata.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdataset.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdatasetiter.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdatastruct.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rdatatype.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/result.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/rootns.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews#include <dns/view.h>
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic char root_ns[] =
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews";\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"; Internet Root Nameservers\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews";\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"$TTL 518400\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      A.ROOT-SERVERS.NET.\n"
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater".                       518400  IN      NS      B.ROOT-SERVERS.NET.\n"
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater".                       518400  IN      NS      C.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      D.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      E.ROOT-SERVERS.NET.\n"
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater".                       518400  IN      NS      F.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      G.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      H.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      I.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      J.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      K.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      L.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews".                       518400  IN      NS      M.ROOT-SERVERS.NET.\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"A.ROOT-SERVERS.NET.     3600000 IN      A       198.41.0.4\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"A.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:503:BA3E::2:30\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"B.ROOT-SERVERS.NET.     3600000 IN      A       192.228.79.201\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"C.ROOT-SERVERS.NET.     3600000 IN      A       192.33.4.12\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"C.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:500:2::c\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"D.ROOT-SERVERS.NET.     3600000 IN      A       199.7.91.13\n"
f6da30bb5447c23d880b09f601441e70c5313557Mark Andrews"D.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:500:2d::d\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"E.ROOT-SERVERS.NET.     3600000 IN      A       192.203.230.10\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"F.ROOT-SERVERS.NET.     3600000 IN      A       192.5.5.241\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"F.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:500:2F::F\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"G.ROOT-SERVERS.NET.     3600000 IN      A       192.112.36.4\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"H.ROOT-SERVERS.NET.     3600000 IN      A       128.63.2.53\n"
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater"H.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:500:1::803F:235\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"I.ROOT-SERVERS.NET.     3600000 IN      A       192.36.148.17\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"I.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:7fe::53\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"J.ROOT-SERVERS.NET.     3600000 IN      A       192.58.128.30\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"J.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:503:C27::2:30\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"K.ROOT-SERVERS.NET.     3600000 IN      A       193.0.14.129\n"
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews"K.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:7FD::1\n"
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews"L.ROOT-SERVERS.NET.     3600000 IN      A       199.7.83.42\n"
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews"L.ROOT-SERVERS.NET.     604800  IN      AAAA    2001:500:3::42\n"
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews"M.ROOT-SERVERS.NET.     3600000 IN      A       202.12.27.33\n"
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews"M.ROOT-SERVERS.NET.     3600000 IN      AAAA    2001:DC3::35\n";
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic isc_result_t
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsin_rootns(dns_rdataset_t *rootns, dns_name_t *name) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_result_t result;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdata_t rdata = DNS_RDATA_INIT;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdata_ns_t ns;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (!dns_rdataset_isassociated(rootns))
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        return (ISC_R_NOTFOUND);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_rdataset_first(rootns);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    while (result == ISC_R_SUCCESS) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_rdataset_current(rootns, &rdata);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_rdata_tostruct(&rdata, &ns, NULL);
9fbbfb5757a1e3e86d7dea62c4e63ffc2303ca2bAutomatic Updater        if (result != ISC_R_SUCCESS)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            return (result);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        if (dns_name_compare(name, &ns.name) == 0)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            return (ISC_R_SUCCESS);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_rdataset_next(rootns);
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews        dns_rdata_reset(&rdata);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    }
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews    if (result == ISC_R_NOMORE)
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        result = ISC_R_NOTFOUND;
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews    return (result);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews}
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic isc_result_t
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewscheck_node(dns_rdataset_t *rootns, dns_name_t *name,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews       dns_rdatasetiter_t *rdsiter) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_result_t result;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdataset_t rdataset;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdataset_init(&rdataset);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_rdatasetiter_first(rdsiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    while (result == ISC_R_SUCCESS) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_rdatasetiter_current(rdsiter, &rdataset);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        switch (rdataset.type) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        case dns_rdatatype_a:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        case dns_rdatatype_aaaa:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            result = in_rootns(rootns, name);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            if (result != ISC_R_SUCCESS)
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews                goto cleanup;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            break;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        case dns_rdatatype_ns:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            if (dns_name_compare(name, dns_rootname) == 0)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                break;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            /*FALLTHROUGH*/
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        default:
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews            result = ISC_R_FAILURE;
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews            goto cleanup;
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        }
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        dns_rdataset_disassociate(&rdataset);
a057e8e33baa5fa369be28a9680585200ce3ff73Mark Andrews        result = dns_rdatasetiter_next(rdsiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    }
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (result == ISC_R_NOMORE)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = ISC_R_SUCCESS;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews cleanup:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (dns_rdataset_isassociated(&rdataset))
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_rdataset_disassociate(&rdataset);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    return (result);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews}
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic isc_result_t
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewscheck_hints(dns_db_t *db) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_result_t result;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdataset_t rootns;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_dbiterator_t *dbiter = NULL;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_dbnode_t *node = NULL;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_stdtime_t now;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_fixedname_t fixname;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_name_t *name;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdatasetiter_t *rdsiter = NULL;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_stdtime_get(&now);
bf056b7184b38281c1b0bf0cf21b5982fa1a4edaMark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_fixedname_init(&fixname);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    name = dns_fixedname_name(&fixname);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdataset_init(&rootns);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    (void)dns_db_find(db, dns_rootname, NULL, dns_rdatatype_ns, 0,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews              now, NULL, name, &rootns, NULL);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_db_createiterator(db, 0, &dbiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (result != ISC_R_SUCCESS)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        goto cleanup;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_dbiterator_first(dbiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    while (result == ISC_R_SUCCESS) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_dbiterator_current(dbiter, &node, name);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        if (result != ISC_R_SUCCESS)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews            goto cleanup;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        result = dns_db_allrdatasets(db, node, NULL, now, &rdsiter);
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        if (result != ISC_R_SUCCESS)
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews            goto cleanup;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        result = check_node(&rootns, name, rdsiter);
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        if (result != ISC_R_SUCCESS)
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews            goto cleanup;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        dns_rdatasetiter_destroy(&rdsiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_db_detachnode(db, &node);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_dbiterator_next(dbiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    }
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (result == ISC_R_NOMORE)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = ISC_R_SUCCESS;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews cleanup:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (dns_rdataset_isassociated(&rootns))
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_rdataset_disassociate(&rootns);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (rdsiter != NULL)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_rdatasetiter_destroy(&rdsiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (node != NULL)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_db_detachnode(db, &node);
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews    if (dbiter != NULL)
f7b41fd9291b8f4dba27e2b57e1d93f0913a4f1dMark Andrews        dns_dbiterator_destroy(&dbiter);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    return (result);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews}
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updaterisc_result_t
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updaterdns_rootns_create(isc_mem_t *mctx, dns_rdataclass_t rdclass,
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater          const char *filename, dns_db_t **target)
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater{
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater    isc_result_t result, eresult;
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater    isc_buffer_t source;
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater    unsigned int len;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdatacallbacks_t callbacks;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_db_t *db = NULL;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    REQUIRE(target != NULL && *target == NULL);
285254345ce5ab270848f8c11f7be146793f1e00Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_db_create(mctx, "rbt", dns_rootname, dns_dbtype_zone,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                   rdclass, 0, NULL, &db);
285254345ce5ab270848f8c11f7be146793f1e00Mark Andrews    if (result != ISC_R_SUCCESS)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        goto failure;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    len = strlen(root_ns);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_buffer_init(&source, root_ns, len);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_buffer_add(&source, len);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdatacallbacks_init(&callbacks);
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews    result = dns_db_beginload(db, &callbacks);
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews    if (result != ISC_R_SUCCESS)
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        goto failure;
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews    if (filename != NULL) {
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews        /*
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews         * Load the hints from the specified filename.
3b4098640dd85040270f39b9a5ee5e22de99d3d6Mark Andrews         */
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_master_loadfile(filename, &db->origin,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                         &db->origin, db->rdclass,
d71e2e0c61df16ff37c9934c371a4a60c08974f7Mark Andrews                         DNS_MASTER_HINT,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                         &callbacks, db->mctx);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    } else if (rdclass == dns_rdataclass_in) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        /*
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews         * Default to using the Internet root servers.
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews         */
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = dns_master_loadbuffer(&source, &db->origin,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                           &db->origin, db->rdclass,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                           DNS_MASTER_HINT,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                           &callbacks, db->mctx);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    } else
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = ISC_R_NOTFOUND;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    eresult = dns_db_endload(db, &callbacks);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (result == ISC_R_SUCCESS || result == DNS_R_SEENINCLUDE)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        result = eresult;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (result != ISC_R_SUCCESS && result != DNS_R_SEENINCLUDE)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        goto failure;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (check_hints(db) != ISC_R_SUCCESS)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  "extra data in root hints '%s'",
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  (filename != NULL) ? filename : "<BUILT-IN>");
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    *target = db;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    return (ISC_R_SUCCESS);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews failure:
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL, DNS_LOGMODULE_HINTS,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews              ISC_LOG_ERROR, "could not configure root hints from "
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews              "'%s': %s", (filename != NULL) ? filename : "<BUILT-IN>",
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews              isc_result_totext(result));
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (db != NULL)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        dns_db_detach(&db);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    return (result);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews}
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic void
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updaterreport(dns_view_t *view, dns_name_t *name, isc_boolean_t missing,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews       dns_rdata_t *rdata)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews{
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    const char *viewname = "", *sep = "";
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    char namebuf[DNS_NAME_FORMATSIZE];
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    char typebuf[DNS_RDATATYPE_FORMATSIZE];
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    char databuf[sizeof("xxxx:xxxx:xxxx:xxxx:xxxx:xxxx:123.123.123.123")];
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater    isc_buffer_t buffer;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_result_t result;
1224c3b69b3d18f7127aa042644936af25a2d679Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (strcmp(view->name, "_bind") != 0 &&
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        strcmp(view->name, "_default") != 0) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        viewname = view->name;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        sep = ": view ";
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    }
e2e4d321999340802f77adaacd19c797d04b4b95Automatic Updater
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_name_format(name, namebuf, sizeof(namebuf));
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdatatype_format(rdata->type, typebuf, sizeof(typebuf));
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_buffer_init(&buffer, databuf, sizeof(databuf) - 1);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    result = dns_rdata_totext(rdata, NULL, &buffer);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    RUNTIME_CHECK(result == ISC_R_SUCCESS);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    databuf[isc_buffer_usedlength(&buffer)] = '\0';
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    if (missing)
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  "checkhints%s%s: %s/%s (%s) missing from hints",
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  sep, viewname, namebuf, typebuf, databuf);
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    else
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews        isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews                  "checkhints%s%s: %s/%s (%s) extra record "
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews                  "in hints", sep, viewname, namebuf, typebuf,
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews                  databuf);
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews}
4abdfc917e6635a7c81d1f931a0c79227e72d025Mark Andrews
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsstatic isc_boolean_t
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrewsinrrset(dns_rdataset_t *rrset, dns_rdata_t *rdata) {
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    isc_result_t result;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews    dns_rdata_t current = DNS_RDATA_INIT;
5a4557e8de2951a2796676b5ec4b6a90caa5be14Mark Andrews
    result = dns_rdataset_first(rrset);
    while (result == ISC_R_SUCCESS) {
        dns_rdataset_current(rrset, &current);
        if (dns_rdata_compare(rdata, &current) == 0)
            return (ISC_TRUE);
        dns_rdata_reset(&current);
        result = dns_rdataset_next(rrset);
    }
    return (ISC_FALSE);
}

/*
 * Check that the address RRsets match.
 *
 * Note we don't complain about missing glue records.
 */

static void
check_address_records(dns_view_t *view, dns_db_t *hints, dns_db_t *db,
              dns_name_t *name, isc_stdtime_t now)
{
    isc_result_t hresult, rresult, result;
    dns_rdataset_t hintrrset, rootrrset;
    dns_rdata_t rdata = DNS_RDATA_INIT;
    dns_name_t *foundname;
    dns_fixedname_t fixed;

    dns_rdataset_init(&hintrrset);
    dns_rdataset_init(&rootrrset);
    dns_fixedname_init(&fixed);
    foundname = dns_fixedname_name(&fixed);

    hresult = dns_db_find(hints, name, NULL, dns_rdatatype_a, 0,
                  now, NULL, foundname, &hintrrset, NULL);
    rresult = dns_db_find(db, name, NULL, dns_rdatatype_a,
                  DNS_DBFIND_GLUEOK, now, NULL, foundname,
                  &rootrrset, NULL);
    if (hresult == ISC_R_SUCCESS &&
        (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
        result = dns_rdataset_first(&rootrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&rootrrset, &rdata);
            if (!inrrset(&hintrrset, &rdata))
                report(view, name, ISC_TRUE, &rdata);
            result = dns_rdataset_next(&rootrrset);
        }
        result = dns_rdataset_first(&hintrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&hintrrset, &rdata);
            if (!inrrset(&rootrrset, &rdata))
                report(view, name, ISC_FALSE, &rdata);
            result = dns_rdataset_next(&hintrrset);
        }
    }
    if (hresult == ISC_R_NOTFOUND &&
        (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
        result = dns_rdataset_first(&rootrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&rootrrset, &rdata);
            report(view, name, ISC_TRUE, &rdata);
            result = dns_rdataset_next(&rootrrset);
        }
    }
    if (dns_rdataset_isassociated(&rootrrset))
        dns_rdataset_disassociate(&rootrrset);
    if (dns_rdataset_isassociated(&hintrrset))
        dns_rdataset_disassociate(&hintrrset);

    /*
     * Check AAAA records.
     */
    hresult = dns_db_find(hints, name, NULL, dns_rdatatype_aaaa, 0,
                  now, NULL, foundname, &hintrrset, NULL);
    rresult = dns_db_find(db, name, NULL, dns_rdatatype_aaaa,
                  DNS_DBFIND_GLUEOK, now, NULL, foundname,
                  &rootrrset, NULL);
    if (hresult == ISC_R_SUCCESS &&
        (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
        result = dns_rdataset_first(&rootrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&rootrrset, &rdata);
            if (!inrrset(&hintrrset, &rdata))
                report(view, name, ISC_TRUE, &rdata);
            dns_rdata_reset(&rdata);
            result = dns_rdataset_next(&rootrrset);
        }
        result = dns_rdataset_first(&hintrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&hintrrset, &rdata);
            if (!inrrset(&rootrrset, &rdata))
                report(view, name, ISC_FALSE, &rdata);
            dns_rdata_reset(&rdata);
            result = dns_rdataset_next(&hintrrset);
        }
    }
    if (hresult == ISC_R_NOTFOUND &&
        (rresult == ISC_R_SUCCESS || rresult == DNS_R_GLUE)) {
        result = dns_rdataset_first(&rootrrset);
        while (result == ISC_R_SUCCESS) {
            dns_rdata_reset(&rdata);
            dns_rdataset_current(&rootrrset, &rdata);
            report(view, name, ISC_TRUE, &rdata);
            dns_rdata_reset(&rdata);
            result = dns_rdataset_next(&rootrrset);
        }
    }
    if (dns_rdataset_isassociated(&rootrrset))
        dns_rdataset_disassociate(&rootrrset);
    if (dns_rdataset_isassociated(&hintrrset))
        dns_rdataset_disassociate(&hintrrset);
}

void
dns_root_checkhints(dns_view_t *view, dns_db_t *hints, dns_db_t *db) {
    isc_result_t result;
    dns_rdata_t rdata = DNS_RDATA_INIT;
    dns_rdata_ns_t ns;
    dns_rdataset_t hintns, rootns;
    const char *viewname = "", *sep = "";
    isc_stdtime_t now;
    dns_name_t *name;
    dns_fixedname_t fixed;

    REQUIRE(hints != NULL);
    REQUIRE(db != NULL);
    REQUIRE(view != NULL);

    isc_stdtime_get(&now);

    if (strcmp(view->name, "_bind") != 0 &&
        strcmp(view->name, "_default") != 0) {
        viewname = view->name;
        sep = ": view ";
    }

    dns_rdataset_init(&hintns);
    dns_rdataset_init(&rootns);
    dns_fixedname_init(&fixed);
    name = dns_fixedname_name(&fixed);

    result = dns_db_find(hints, dns_rootname, NULL, dns_rdatatype_ns, 0,
                 now, NULL, name, &hintns, NULL);
    if (result != ISC_R_SUCCESS) {
        isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
                  DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
                  "checkhints%s%s: unable to get root NS rrset "
                  "from hints: %s", sep, viewname,
                  dns_result_totext(result));
        goto cleanup;
    }

    result = dns_db_find(db, dns_rootname, NULL, dns_rdatatype_ns, 0,
                 now, NULL, name, &rootns, NULL);
    if (result != ISC_R_SUCCESS) {
        isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
                  DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
                  "checkhints%s%s: unable to get root NS rrset "
                  "from cache: %s", sep, viewname,
                  dns_result_totext(result));
        goto cleanup;
    }

    /*
     * Look for missing root NS names.
     */
    result = dns_rdataset_first(&rootns);
    while (result == ISC_R_SUCCESS) {
        dns_rdataset_current(&rootns, &rdata);
        result = dns_rdata_tostruct(&rdata, &ns, NULL);
        RUNTIME_CHECK(result == ISC_R_SUCCESS);
        result = in_rootns(&hintns, &ns.name);
        if (result != ISC_R_SUCCESS) {
            char namebuf[DNS_NAME_FORMATSIZE];
            /* missing from hints */
            dns_name_format(&ns.name, namebuf, sizeof(namebuf));
            isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
                      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
                      "checkhints%s%s: unable to find root "
                      "NS '%s' in hints", sep, viewname,
                      namebuf);
        } else
            check_address_records(view, hints, db, &ns.name, now);
        dns_rdata_reset(&rdata);
        result = dns_rdataset_next(&rootns);
    }
    if (result != ISC_R_NOMORE) {
        goto cleanup;
    }

    /*
     * Look for extra root NS names.
     */
    result = dns_rdataset_first(&hintns);
    while (result == ISC_R_SUCCESS) {
        dns_rdataset_current(&hintns, &rdata);
        result = dns_rdata_tostruct(&rdata, &ns, NULL);
        RUNTIME_CHECK(result == ISC_R_SUCCESS);
        result = in_rootns(&rootns, &ns.name);
        if (result != ISC_R_SUCCESS) {
            char namebuf[DNS_NAME_FORMATSIZE];
            /* extra entry in hints */
            dns_name_format(&ns.name, namebuf, sizeof(namebuf));
            isc_log_write(dns_lctx, DNS_LOGCATEGORY_GENERAL,
                      DNS_LOGMODULE_HINTS, ISC_LOG_WARNING,
                      "checkhints%s%s: extra NS '%s' in hints",
                      sep, viewname, namebuf);
        }
        dns_rdata_reset(&rdata);
        result = dns_rdataset_next(&hintns);
    }
    if (result != ISC_R_NOMORE) {
        goto cleanup;
    }

 cleanup:
    if (dns_rdataset_isassociated(&rootns))
        dns_rdataset_disassociate(&rootns);
    if (dns_rdataset_isassociated(&hintns))
        dns_rdataset_disassociate(&hintns);
}