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/*
* Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl.
* Copyright (C) Internet Systems Consortium, Inc. ("ISC")
*
* SPDX-License-Identifier: MPL-2.0
*
* 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) 1999-2001, 2016 Internet Systems Consortium, Inc. ("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 http://mozilla.org/MPL/2.0/.
*/
#ifdef DLZ_STUB
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <isc/mem.h>
#include <isc/print.h>
#include <isc/result.h>
#include <isc/util.h>
#include <dns/log.h>
#include <dns/result.h>
#include <dns/sdlz.h>
#include <dlz/dlz_stub_driver.h>
#include <named/globals.h>
static dns_sdlzimplementation_t *dlz_stub = NULL;
typedef struct config_data {
char *myzone;
char *myname;
char *myip;
isc_mem_t *mctx;
} config_data_t;
/*
* SDLZ methods
*/
static isc_result_t
stub_dlz_allnodes(const char *zone, void *driverarg, void *dbdata,
dns_sdlzallnodes_t *allnodes) {
config_data_t *cd;
isc_result_t result;
UNUSED(zone);
UNUSED(driverarg);
cd = (config_data_t *)dbdata;
result = dns_sdlz_putnamedrr(allnodes, cd->myname, "soa", 86400,
"web root.localhost. "
"0 28800 7200 604800 86400");
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
result = dns_sdlz_putnamedrr(allnodes, "ns", "ns", 86400, cd->myname);
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
result = dns_sdlz_putnamedrr(allnodes, cd->myname, "a", 1, cd->myip);
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
return (ISC_R_SUCCESS);
}
static isc_result_t
stub_dlz_allowzonexfr(void *driverarg, void *dbdata, const char *name,
const char *client) {
config_data_t *cd;
UNUSED(driverarg);
UNUSED(client);
cd = (config_data_t *)dbdata;
if (strcmp(name, cd->myname) == 0) {
return (ISC_R_SUCCESS);
}
return (ISC_R_NOTFOUND);
}
static isc_result_t
stub_dlz_authority(const char *zone, void *driverarg, void *dbdata,
dns_sdlzlookup_t *lookup) {
isc_result_t result;
config_data_t *cd;
UNUSED(driverarg);
cd = (config_data_t *)dbdata;
if (strcmp(zone, cd->myzone) == 0) {
result = dns_sdlz_putsoa(lookup, cd->myname, "root.localhost.",
0);
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
result = dns_sdlz_putrr(lookup, "ns", 86400, cd->myname);
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
return (ISC_R_SUCCESS);
}
return (ISC_R_NOTFOUND);
}
static isc_result_t
stub_dlz_findzonedb(void *driverarg, void *dbdata, const char *name,
dns_clientinfomethods_t *methods,
dns_clientinfo_t *clientinfo) {
config_data_t *cd;
UNUSED(driverarg);
UNUSED(methods);
UNUSED(clientinfo);
cd = (config_data_t *)dbdata;
/* Write info message to log */
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DLZ,
ISC_LOG_DEBUG(2), "dlz_stub findzone looking for '%s'",
name);
if (strcmp(cd->myzone, name) == 0) {
return (ISC_R_SUCCESS);
} else {
return (ISC_R_NOTFOUND);
}
}
static isc_result_t
stub_dlz_lookup(const char *zone, const char *name, void *driverarg,
void *dbdata, dns_sdlzlookup_t *lookup,
dns_clientinfomethods_t *methods,
dns_clientinfo_t *clientinfo) {
isc_result_t result;
config_data_t *cd;
UNUSED(zone);
UNUSED(driverarg);
UNUSED(methods);
UNUSED(clientinfo);
cd = (config_data_t *)dbdata;
if (strcmp(name, cd->myname) == 0) {
result = dns_sdlz_putrr(lookup, "a", 1, cd->myip);
if (result != ISC_R_SUCCESS) {
return (ISC_R_FAILURE);
}
return (ISC_R_SUCCESS);
}
return (ISC_R_FAILURE);
}
static isc_result_t
stub_dlz_create(const char *dlzname, unsigned int argc, char *argv[],
void *driverarg, void **dbdata) {
config_data_t *cd;
UNUSED(driverarg);
if (argc < 4) {
return (ISC_R_FAILURE);
}
/*
* Write info message to log
*/
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DLZ,
ISC_LOG_INFO,
"Loading '%s' using DLZ_stub driver. "
"Zone: %s, Name: %s IP: %s",
dlzname, argv[1], argv[2], argv[3]);
cd = isc_mem_get(named_g_mctx, sizeof(config_data_t));
if ((cd) == NULL) {
return (ISC_R_NOMEMORY);
}
memset(cd, 0, sizeof(config_data_t));
cd->myzone = isc_mem_strdup(named_g_mctx, argv[1]);
cd->myname = isc_mem_strdup(named_g_mctx, argv[2]);
cd->myip = isc_mem_strdup(named_g_mctx, argv[3]);
isc_mem_attach(named_g_mctx, &cd->mctx);
*dbdata = cd;
return (ISC_R_SUCCESS);
}
static void
stub_dlz_destroy(void *driverarg, void *dbdata) {
config_data_t *cd;
isc_mem_t *mctx;
UNUSED(driverarg);
cd = (config_data_t *)dbdata;
/*
* Write debugging message to log
*/
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DLZ,
ISC_LOG_DEBUG(2), "Unloading DLZ_stub driver.");
isc_mem_free(named_g_mctx, cd->myzone);
isc_mem_free(named_g_mctx, cd->myname);
isc_mem_free(named_g_mctx, cd->myip);
mctx = cd->mctx;
isc_mem_putanddetach(&mctx, cd, sizeof(config_data_t));
}
static dns_sdlzmethods_t dlz_stub_methods = {
stub_dlz_create,
stub_dlz_destroy,
stub_dlz_findzonedb,
stub_dlz_lookup,
stub_dlz_authority,
stub_dlz_allnodes,
stub_dlz_allowzonexfr,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
NULL,
};
/*%
* Wrapper around dns_sdlzregister().
*/
isc_result_t
dlz_stub_init(void) {
isc_result_t result;
/*
* Write debugging message to log
*/
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DLZ,
ISC_LOG_DEBUG(2), "Registering DLZ_stub driver.");
result = dns_sdlzregister("dlz_stub", &dlz_stub_methods, NULL,
DNS_SDLZFLAG_RELATIVEOWNER |
DNS_SDLZFLAG_RELATIVERDATA,
named_g_mctx, &dlz_stub);
if (result != ISC_R_SUCCESS) {
UNEXPECTED_ERROR(__FILE__, __LINE__,
"dns_sdlzregister() failed: %s",
isc_result_totext(result));
result = ISC_R_UNEXPECTED;
}
return (result);
}
/*
* Wrapper around dns_sdlzunregister().
*/
void
dlz_stub_clear(void) {
/*
* Write debugging message to log
*/
isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, DNS_LOGMODULE_DLZ,
ISC_LOG_DEBUG(2), "Unregistering DLZ_stub driver.");
if (dlz_stub != NULL) {
dns_sdlzunregister(&dlz_stub);
}
}
#endif /* ifdef DLZ_STUB */
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