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Diffstat (limited to '')
| -rw-r--r-- | bin/tests/system/dyndb/driver/db.c | 814 |
1 files changed, 814 insertions, 0 deletions
diff --git a/bin/tests/system/dyndb/driver/db.c b/bin/tests/system/dyndb/driver/db.c new file mode 100644 index 0000000..bed7d3e --- /dev/null +++ b/bin/tests/system/dyndb/driver/db.c @@ -0,0 +1,814 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 AND ISC + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/* + * Copyright (C) 2009-2015 Red Hat + * + * Permission to use, copy, modify, and/or 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 AUTHORS DISCLAIMS ALL WARRANTIES WITH + * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY + * AND FITNESS. IN NO EVENT SHALL ISC 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. + */ + +/* + * Database API implementation. The interface is defined in lib/dns/db.h. + * + * dns_db_*() calls on database instances backed by this driver use + * struct sampledb_methods to find appropriate function implementation. + * + * This example re-uses RBT DB implementation from original BIND and blindly + * proxies most of dns_db_*() calls to this underlying RBT DB. + * See struct sampledb below. + */ + +#include "db.h" +#include <inttypes.h> +#include <stdbool.h> + +#include <isc/string.h> +#include <isc/util.h> + +#include <dns/db.h> +#include <dns/diff.h> +#include <dns/enumclass.h> +#include <dns/rbt.h> +#include <dns/rdatalist.h> +#include <dns/rdatastruct.h> +#include <dns/soa.h> +#include <dns/types.h> + +#include "instance.h" +#include "syncptr.h" +#include "util.h" + +#define SAMPLEDB_MAGIC ISC_MAGIC('S', 'M', 'D', 'B') +#define VALID_SAMPLEDB(sampledb) \ + ((sampledb) != NULL && (sampledb)->common.impmagic == SAMPLEDB_MAGIC) + +struct sampledb { + dns_db_t common; + isc_refcount_t refs; + sample_instance_t *inst; + + /* + * Internal RBT database implementation provided by BIND. + * Most dns_db_* calls (find(), createiterator(), etc.) + * are blindly forwarded to this RBT DB. + */ + dns_db_t *rbtdb; +}; + +typedef struct sampledb sampledb_t; + +/* + * Get full DNS name from the node. + * + * @warning + * The code silently expects that "node" came from RBTDB and thus + * assumption dns_dbnode_t (from RBTDB) == dns_rbtnode_t is correct. + * + * This should work as long as we use only RBTDB and nothing else. + */ +static isc_result_t +sample_name_fromnode(dns_dbnode_t *node, dns_name_t *name) { + dns_rbtnode_t *rbtnode = (dns_rbtnode_t *)node; + return (dns_rbt_fullnamefromnode(rbtnode, name)); +} + +static void +attach(dns_db_t *source, dns_db_t **targetp) { + sampledb_t *sampledb = (sampledb_t *)source; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + isc_refcount_increment(&sampledb->refs); + *targetp = source; +} + +static void +free_sampledb(sampledb_t *sampledb) { + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_detach(&sampledb->rbtdb); + dns_name_free(&sampledb->common.origin, sampledb->common.mctx); + isc_mem_putanddetach(&sampledb->common.mctx, sampledb, + sizeof(*sampledb)); +} + +static void +detach(dns_db_t **dbp) { + REQUIRE(dbp != NULL && VALID_SAMPLEDB((sampledb_t *)(*dbp))); + sampledb_t *sampledb = (sampledb_t *)(*dbp); + *dbp = NULL; + + if (isc_refcount_decrement(&sampledb->refs) == 1) { + free_sampledb(sampledb); + } +} + +/* + * This method should never be called, because DB is "persistent". + * See ispersistent() function. It means that database do not need to be + * loaded in the usual sense. + */ +static isc_result_t +beginload(dns_db_t *db, dns_rdatacallbacks_t *callbacks) { + UNUSED(db); + UNUSED(callbacks); + + fatal_error("current implementation should never call beginload()"); + + /* Not reached */ + return (ISC_R_SUCCESS); +} + +/* + * This method should never be called, because DB is "persistent". + * See ispersistent() function. It means that database do not need to be + * loaded in the usual sense. + */ +static isc_result_t +endload(dns_db_t *db, dns_rdatacallbacks_t *callbacks) { + UNUSED(db); + UNUSED(callbacks); + + fatal_error("current implementation should never call endload()"); + + /* Not reached */ + return (ISC_R_SUCCESS); +} + +static isc_result_t +serialize(dns_db_t *db, dns_dbversion_t *version, FILE *file) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_serialize(sampledb->rbtdb, version, file)); +} + +static isc_result_t +dump(dns_db_t *db, dns_dbversion_t *version, const char *filename, + dns_masterformat_t masterformat) { + UNUSED(db); + UNUSED(version); + UNUSED(filename); + UNUSED(masterformat); + + fatal_error("current implementation should never call dump()"); + + /* Not reached */ + return (ISC_R_SUCCESS); +} + +static void +currentversion(dns_db_t *db, dns_dbversion_t **versionp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_currentversion(sampledb->rbtdb, versionp); +} + +static isc_result_t +newversion(dns_db_t *db, dns_dbversion_t **versionp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_newversion(sampledb->rbtdb, versionp)); +} + +static void +attachversion(dns_db_t *db, dns_dbversion_t *source, + dns_dbversion_t **targetp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_attachversion(sampledb->rbtdb, source, targetp); +} + +static void +closeversion(dns_db_t *db, dns_dbversion_t **versionp, bool commit) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_closeversion(sampledb->rbtdb, versionp, commit); +} + +static isc_result_t +findnode(dns_db_t *db, const dns_name_t *name, bool create, + dns_dbnode_t **nodep) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findnode(sampledb->rbtdb, name, create, nodep)); +} + +static isc_result_t +find(dns_db_t *db, const dns_name_t *name, dns_dbversion_t *version, + dns_rdatatype_t type, unsigned int options, isc_stdtime_t now, + dns_dbnode_t **nodep, dns_name_t *foundname, dns_rdataset_t *rdataset, + dns_rdataset_t *sigrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_find(sampledb->rbtdb, name, version, type, options, now, + nodep, foundname, rdataset, sigrdataset)); +} + +static isc_result_t +findzonecut(dns_db_t *db, const dns_name_t *name, unsigned int options, + isc_stdtime_t now, dns_dbnode_t **nodep, dns_name_t *foundname, + dns_name_t *dcname, dns_rdataset_t *rdataset, + dns_rdataset_t *sigrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findzonecut(sampledb->rbtdb, name, options, now, nodep, + foundname, dcname, rdataset, sigrdataset)); +} + +static void +attachnode(dns_db_t *db, dns_dbnode_t *source, dns_dbnode_t **targetp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_attachnode(sampledb->rbtdb, source, targetp); +} + +static void +detachnode(dns_db_t *db, dns_dbnode_t **targetp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_detachnode(sampledb->rbtdb, targetp); +} + +static isc_result_t +expirenode(dns_db_t *db, dns_dbnode_t *node, isc_stdtime_t now) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_expirenode(sampledb->rbtdb, node, now)); +} + +static void +printnode(dns_db_t *db, dns_dbnode_t *node, FILE *out) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_printnode(sampledb->rbtdb, node, out); +} + +static isc_result_t +createiterator(dns_db_t *db, unsigned int options, + dns_dbiterator_t **iteratorp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_createiterator(sampledb->rbtdb, options, iteratorp)); +} + +static isc_result_t +findrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, + dns_rdatatype_t type, dns_rdatatype_t covers, isc_stdtime_t now, + dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findrdataset(sampledb->rbtdb, node, version, type, + covers, now, rdataset, sigrdataset)); +} + +static isc_result_t +allrdatasets(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, + unsigned int options, isc_stdtime_t now, + dns_rdatasetiter_t **iteratorp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_allrdatasets(sampledb->rbtdb, node, version, options, + now, iteratorp)); +} + +static isc_result_t +addrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, + isc_stdtime_t now, dns_rdataset_t *rdataset, unsigned int options, + dns_rdataset_t *addedrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + isc_result_t result; + dns_fixedname_t name; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_fixedname_init(&name); + CHECK(dns_db_addrdataset(sampledb->rbtdb, node, version, now, rdataset, + options, addedrdataset)); + if (rdataset->type == dns_rdatatype_a || + rdataset->type == dns_rdatatype_aaaa) + { + CHECK(sample_name_fromnode(node, dns_fixedname_name(&name))); + CHECK(syncptrs(sampledb->inst, dns_fixedname_name(&name), + rdataset, DNS_DIFFOP_ADD)); + } + +cleanup: + return (result); +} + +static isc_result_t +subtractrdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, + dns_rdataset_t *rdataset, unsigned int options, + dns_rdataset_t *newrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + isc_result_t result; + dns_fixedname_t name; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_fixedname_init(&name); + result = dns_db_subtractrdataset(sampledb->rbtdb, node, version, + rdataset, options, newrdataset); + if (result != ISC_R_SUCCESS && result != DNS_R_NXRRSET) { + goto cleanup; + } + + if (rdataset->type == dns_rdatatype_a || + rdataset->type == dns_rdatatype_aaaa) + { + CHECK(sample_name_fromnode(node, dns_fixedname_name(&name))); + CHECK(syncptrs(sampledb->inst, dns_fixedname_name(&name), + rdataset, DNS_DIFFOP_DEL)); + } + +cleanup: + return (result); +} + +/* + * deleterdataset() function is not used during DNS update processing so syncptr + * implementation is left as an exercise to the reader. + */ +static isc_result_t +deleterdataset(dns_db_t *db, dns_dbnode_t *node, dns_dbversion_t *version, + dns_rdatatype_t type, dns_rdatatype_t covers) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_deleterdataset(sampledb->rbtdb, node, version, type, + covers)); +} + +static bool +issecure(dns_db_t *db) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_issecure(sampledb->rbtdb)); +} + +static unsigned int +nodecount(dns_db_t *db) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_nodecount(sampledb->rbtdb)); +} + +/* + * The database does not need to be loaded from disk or written to disk. + * Always return true. + */ +static bool +ispersistent(dns_db_t *db) { + UNUSED(db); + + return (true); +} + +static void +overmem(dns_db_t *db, bool over) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_overmem(sampledb->rbtdb, over); +} + +static void +settask(dns_db_t *db, isc_task_t *task) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_settask(sampledb->rbtdb, task); +} + +static isc_result_t +getoriginnode(dns_db_t *db, dns_dbnode_t **nodep) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_getoriginnode(sampledb->rbtdb, nodep)); +} + +static void +transfernode(dns_db_t *db, dns_dbnode_t **sourcep, dns_dbnode_t **targetp) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_transfernode(sampledb->rbtdb, sourcep, targetp); +} + +static isc_result_t +getnsec3parameters(dns_db_t *db, dns_dbversion_t *version, dns_hash_t *hash, + uint8_t *flags, uint16_t *iterations, unsigned char *salt, + size_t *salt_length) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_getnsec3parameters(sampledb->rbtdb, version, hash, flags, + iterations, salt, salt_length)); +} + +static isc_result_t +findnsec3node(dns_db_t *db, const dns_name_t *name, bool create, + dns_dbnode_t **nodep) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findnsec3node(sampledb->rbtdb, name, create, nodep)); +} + +static isc_result_t +setsigningtime(dns_db_t *db, dns_rdataset_t *rdataset, isc_stdtime_t resign) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_setsigningtime(sampledb->rbtdb, rdataset, resign)); +} + +static isc_result_t +getsigningtime(dns_db_t *db, dns_rdataset_t *rdataset, dns_name_t *name) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_getsigningtime(sampledb->rbtdb, rdataset, name)); +} + +static void +resigned(dns_db_t *db, dns_rdataset_t *rdataset, dns_dbversion_t *version) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + dns_db_resigned(sampledb->rbtdb, rdataset, version); +} + +static bool +isdnssec(dns_db_t *db) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_isdnssec(sampledb->rbtdb)); +} + +static dns_stats_t * +getrrsetstats(dns_db_t *db) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_getrrsetstats(sampledb->rbtdb)); +} + +static isc_result_t +findnodeext(dns_db_t *db, const dns_name_t *name, bool create, + dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo, + dns_dbnode_t **nodep) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findnodeext(sampledb->rbtdb, name, create, methods, + clientinfo, nodep)); +} + +static isc_result_t +findext(dns_db_t *db, const dns_name_t *name, dns_dbversion_t *version, + dns_rdatatype_t type, unsigned int options, isc_stdtime_t now, + dns_dbnode_t **nodep, dns_name_t *foundname, + dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo, + dns_rdataset_t *rdataset, dns_rdataset_t *sigrdataset) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_findext(sampledb->rbtdb, name, version, type, options, + now, nodep, foundname, methods, clientinfo, + rdataset, sigrdataset)); +} + +static isc_result_t +setcachestats(dns_db_t *db, isc_stats_t *stats) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_setcachestats(sampledb->rbtdb, stats)); +} + +static size_t +hashsize(dns_db_t *db) { + sampledb_t *sampledb = (sampledb_t *)db; + + REQUIRE(VALID_SAMPLEDB(sampledb)); + + return (dns_db_hashsize(sampledb->rbtdb)); +} + +/* + * DB interface definition. Database driver uses this structure to + * determine which implementation of dns_db_*() function to call. + */ +static dns_dbmethods_t sampledb_methods = { + attach, + detach, + beginload, + endload, + serialize, + dump, + currentversion, + newversion, + attachversion, + closeversion, + findnode, + find, + findzonecut, + attachnode, + detachnode, + expirenode, + printnode, + createiterator, + findrdataset, + allrdatasets, + addrdataset, + subtractrdataset, + deleterdataset, + issecure, + nodecount, + ispersistent, + overmem, + settask, + getoriginnode, + transfernode, + getnsec3parameters, + findnsec3node, + setsigningtime, + getsigningtime, + resigned, + isdnssec, + getrrsetstats, + NULL, /* rpz_attach */ + NULL, /* rpz_ready */ + findnodeext, + findext, + setcachestats, + hashsize, + NULL, /* nodefullname */ + NULL, /* getsize */ + NULL, /* setservestalettl */ + NULL, /* getservestalettl */ + NULL, /* setservestalerefresh */ + NULL, /* getservestalerefresh */ + NULL, /* setgluecachestats */ + NULL /* adjusthashsize */ +}; + +/* Auxiliary driver functions. */ + +/* + * Auxiliary functions add_*() create minimal database which can be loaded. + * This is necessary because this driver create empty 'fake' zone which + * is not loaded from disk so there is no way for user to supply SOA, NS and A + * records. + * + * Following functions were copied from BIND 9.10.2rc1 named/server.c, + * credit goes to ISC. + */ +static isc_result_t +add_soa(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name, + const dns_name_t *origin, const dns_name_t *contact) { + dns_dbnode_t *node = NULL; + dns_rdata_t rdata = DNS_RDATA_INIT; + dns_rdatalist_t rdatalist; + dns_rdataset_t rdataset; + isc_result_t result; + unsigned char buf[DNS_SOA_BUFFERSIZE]; + + dns_rdataset_init(&rdataset); + dns_rdatalist_init(&rdatalist); + CHECK(dns_soa_buildrdata(origin, contact, dns_db_class(db), 0, 28800, + 7200, 604800, 86400, buf, &rdata)); + rdatalist.type = rdata.type; + rdatalist.covers = 0; + rdatalist.rdclass = rdata.rdclass; + rdatalist.ttl = 86400; + ISC_LIST_APPEND(rdatalist.rdata, &rdata, link); + CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset)); + CHECK(dns_db_findnode(db, name, true, &node)); + CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL)); +cleanup: + if (node != NULL) { + dns_db_detachnode(db, &node); + } + return (result); +} + +static isc_result_t +add_ns(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name, + const dns_name_t *nsname) { + dns_dbnode_t *node = NULL; + dns_rdata_ns_t ns; + dns_rdata_t rdata = DNS_RDATA_INIT; + dns_rdatalist_t rdatalist; + dns_rdataset_t rdataset; + isc_result_t result; + isc_buffer_t b; + unsigned char buf[DNS_NAME_MAXWIRE]; + + isc_buffer_init(&b, buf, sizeof(buf)); + + dns_rdataset_init(&rdataset); + dns_rdatalist_init(&rdatalist); + ns.common.rdtype = dns_rdatatype_ns; + ns.common.rdclass = dns_db_class(db); + ns.mctx = NULL; + dns_name_init(&ns.name, NULL); + dns_name_clone(nsname, &ns.name); + CHECK(dns_rdata_fromstruct(&rdata, dns_db_class(db), dns_rdatatype_ns, + &ns, &b)); + rdatalist.type = rdata.type; + rdatalist.covers = 0; + rdatalist.rdclass = rdata.rdclass; + rdatalist.ttl = 86400; + ISC_LIST_APPEND(rdatalist.rdata, &rdata, link); + CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset)); + CHECK(dns_db_findnode(db, name, true, &node)); + CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL)); +cleanup: + if (node != NULL) { + dns_db_detachnode(db, &node); + } + return (result); +} + +static isc_result_t +add_a(dns_db_t *db, dns_dbversion_t *version, const dns_name_t *name, + struct in_addr addr) { + dns_dbnode_t *node = NULL; + dns_rdata_in_a_t a; + dns_rdata_t rdata = DNS_RDATA_INIT; + dns_rdatalist_t rdatalist; + dns_rdataset_t rdataset; + isc_result_t result; + isc_buffer_t b; + unsigned char buf[DNS_NAME_MAXWIRE]; + + isc_buffer_init(&b, buf, sizeof(buf)); + + dns_rdataset_init(&rdataset); + dns_rdatalist_init(&rdatalist); + a.common.rdtype = dns_rdatatype_a; + a.common.rdclass = dns_db_class(db); + a.in_addr = addr; + CHECK(dns_rdata_fromstruct(&rdata, dns_db_class(db), dns_rdatatype_a, + &a, &b)); + rdatalist.type = rdata.type; + rdatalist.covers = 0; + rdatalist.rdclass = rdata.rdclass; + rdatalist.ttl = 86400; + ISC_LIST_APPEND(rdatalist.rdata, &rdata, link); + CHECK(dns_rdatalist_tordataset(&rdatalist, &rdataset)); + CHECK(dns_db_findnode(db, name, true, &node)); + CHECK(dns_db_addrdataset(db, node, version, 0, &rdataset, 0, NULL)); +cleanup: + if (node != NULL) { + dns_db_detachnode(db, &node); + } + return (result); +} + +/* + * Driver-specific implementation of dns_db_create(). + * + * @param[in] argv Database-specific parameters from dns_db_create(). + * @param[in] driverarg Driver-specific parameter from dns_db_register(). + */ +isc_result_t +create_db(isc_mem_t *mctx, const dns_name_t *origin, dns_dbtype_t type, + dns_rdataclass_t rdclass, unsigned int argc, char *argv[], + void *driverarg, dns_db_t **dbp) { + sampledb_t *sampledb = NULL; + isc_result_t result; + dns_dbversion_t *version = NULL; + struct in_addr a_addr; + + REQUIRE(type == dns_dbtype_zone); + REQUIRE(rdclass == dns_rdataclass_in); + REQUIRE(argc == 0); + REQUIRE(argv != NULL); + REQUIRE(driverarg != NULL); /* pointer to driver instance */ + REQUIRE(dbp != NULL && *dbp == NULL); + + UNUSED(driverarg); /* no driver-specific configuration */ + + a_addr.s_addr = 0x0100007fU; + + CHECKED_MEM_GET_PTR(mctx, sampledb); + ZERO_PTR(sampledb); + + isc_mem_attach(mctx, &sampledb->common.mctx); + dns_name_init(&sampledb->common.origin, NULL); + + sampledb->common.magic = DNS_DB_MAGIC; + sampledb->common.impmagic = SAMPLEDB_MAGIC; + + sampledb->common.methods = &sampledb_methods; + sampledb->common.attributes = 0; + sampledb->common.rdclass = rdclass; + + CHECK(dns_name_dupwithoffsets(origin, mctx, &sampledb->common.origin)); + + isc_refcount_init(&sampledb->refs, 1); + + /* Translate instance name to instance pointer. */ + sampledb->inst = driverarg; + + /* Create internal instance of RBT DB implementation from BIND. */ + CHECK(dns_db_create(mctx, "rbt", origin, dns_dbtype_zone, + dns_rdataclass_in, 0, NULL, &sampledb->rbtdb)); + + /* Create fake SOA, NS, and A records to make database loadable. */ + CHECK(dns_db_newversion(sampledb->rbtdb, &version)); + CHECK(add_soa(sampledb->rbtdb, version, origin, origin, origin)); + CHECK(add_ns(sampledb->rbtdb, version, origin, origin)); + CHECK(add_a(sampledb->rbtdb, version, origin, a_addr)); + dns_db_closeversion(sampledb->rbtdb, &version, true); + + *dbp = (dns_db_t *)sampledb; + + return (ISC_R_SUCCESS); + +cleanup: + if (sampledb != NULL) { + if (dns_name_dynamic(&sampledb->common.origin)) { + dns_name_free(&sampledb->common.origin, mctx); + } + + isc_mem_putanddetach(&sampledb->common.mctx, sampledb, + sizeof(*sampledb)); + } + + return (result); +} |