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/*
* Copyright (C) 2002 Nuno M. Rodrigues.
*
* 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 NUNO M. RODRIGUES
* 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.
*/
/* $Id: bdb.c,v 1.1 2002/05/16 04:25:22 marka Exp $ */
/*
* BIND 9.1.x simple database driver
* implementation, using Berkeley DB.
*/
#include <errno.h>
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <isc/file.h>
#include <isc/log.h>
#include <isc/lib.h>
#include <isc/mem.h>
#include <isc/msgs.h>
#include <isc/msgcat.h>
#include <isc/region.h>
#include <isc/result.h>
#include <isc/types.h>
#include <isc/util.h>
#include <dns/sdb.h>
#include <dns/log.h>
#include <dns/lib.h>
#include <dns/ttl.h>
#include <named/bdb.h>
#include <named/globals.h>
#include <named/config.h>
#include <db.h>
#define DRIVERNAME "bdb"
static dns_sdbimplementation_t *bdb_imp;
static isc_result_t
bdb_create(const char *zone, int argc, char **argv,
void *unused, void **dbdata)
{
int ret;
UNUSED(zone);
UNUSED(unused);
if (argc < 1)
return ISC_R_FAILURE; /* database path must be given */
if (db_create((DB **)dbdata, NULL, 0) != 0) {
/*
* XXX Should use dns_msgcat et al
* but seems to be unavailable.
*/
isc_log_iwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_CRITICAL, isc_msgcat,
ISC_MSGSET_GENERAL, ISC_MSG_FATALERROR,
"db_create");
return ISC_R_FAILURE;
}
if (isc_file_exists(*argv) != ISC_TRUE) {
isc_log_iwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_CRITICAL, isc_msgcat,
ISC_MSGSET_GENERAL, ISC_MSG_FATALERROR,
"isc_file_exists: %s", *argv);
return ISC_R_FAILURE;
}
if ((ret = (*(DB **)dbdata)->open(*(DB **)dbdata, *argv, NULL, DB_HASH,
DB_RDONLY, 0)) != 0) {
isc_log_iwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_CRITICAL,
isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FATALERROR, "DB->open: %s",
db_strerror(ret));
return ISC_R_FAILURE;
}
return ISC_R_SUCCESS;
}
static isc_result_t
bdb_lookup(const char *zone, const char *name, void *dbdata,
dns_sdblookup_t *l)
{
int ret;
char *type, *rdata;
dns_ttl_t ttl;
isc_consttextregion_t ttltext;
DBC *c;
DBT key, data;
UNUSED(zone);
if ((ret = ((DB *)dbdata)->cursor((DB *)dbdata, NULL, &c, 0)) != 0) {
isc_log_iwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_ERROR,
isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "DB->cursor: %s",
db_strerror(ret));
return ISC_R_FAILURE;
}
memset(&key, 0, sizeof(DBT));
memset(&data, 0, sizeof(DBT));
(const char *)key.data = name;
key.size = strlen(name);
ret = c->c_get(c, &key, &data, DB_SET);
while (ret == 0) {
((char *)key.data)[key.size] = 0;
((char *)data.data)[data.size] = 0;
ttltext.base = strtok((char *)data.data, " ");
ttltext.length = strlen(ttltext.base);
dns_ttl_fromtext((isc_textregion_t *)&ttltext, &ttl);
type = strtok(NULL, " ");
rdata = type + strlen(type) + 1;
if (dns_sdb_putrr(l, type, ttl, rdata) != ISC_R_SUCCESS) {
isc_log_iwrite(dns_lctx,
DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_ERROR,
isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "dns_sdb_putrr");
return ISC_R_FAILURE;
}
ret = c->c_get(c, &key, &data, DB_NEXT_DUP);
}
c->c_close(c);
return ISC_R_SUCCESS;
}
static isc_result_t
bdb_allnodes(const char *zone, void *dbdata, dns_sdballnodes_t *n)
{
int ret;
char *type, *rdata;
dns_ttl_t ttl;
isc_consttextregion_t ttltext;
DBC *c;
DBT key, data;
UNUSED(zone);
if ((ret = ((DB *)dbdata)->cursor((DB *)dbdata, NULL, &c, 0)) != 0) {
isc_log_iwrite(dns_lctx, DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_ERROR,
isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "DB->cursor: %s",
db_strerror(ret));
return ISC_R_FAILURE;
}
memset(&key, 0, sizeof(DBT));
memset(&data, 0, sizeof(DBT));
while (c->c_get(c, &key, &data, DB_NEXT) == 0) {
((char *)key.data)[key.size] = 0;
((char *)data.data)[data.size] = 0;
ttltext.base = strtok((char *)data.data, " ");
ttltext.length = strlen(ttltext.base);
dns_ttl_fromtext((isc_textregion_t *)&ttltext, &ttl);
type = strtok(NULL, " ");
rdata = type + strlen(type) + 1;
if (dns_sdb_putnamedrr(n, key.data, type, ttl, rdata) !=
ISC_R_SUCCESS) {
isc_log_iwrite(dns_lctx,
DNS_LOGCATEGORY_DATABASE,
DNS_LOGMODULE_SDB, ISC_LOG_ERROR,
isc_msgcat, ISC_MSGSET_GENERAL,
ISC_MSG_FAILED, "dns_sdb_putnamedrr");
return ISC_R_FAILURE;
}
}
c->c_close(c);
return ISC_R_SUCCESS;
}
static isc_result_t
bdb_destroy(const char *zone, void *unused, void **dbdata)
{
UNUSED(zone);
UNUSED(unused);
(*(DB **)dbdata)->close(*(DB **)dbdata, 0);
return ISC_R_SUCCESS;
}
isc_result_t
bdb_init(void)
{
static dns_sdbmethods_t bdb_methods = {
bdb_lookup,
NULL,
bdb_allnodes,
bdb_create,
bdb_destroy
};
return dns_sdb_register(DRIVERNAME, &bdb_methods, NULL, 0, ns_g_mctx,
&bdb_imp);
}
void
bdb_clear(void)
{
if (bdb_imp != NULL)
dns_sdb_unregister(&bdb_imp);
}
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