/*
Unix SMB/CIFS implementation.
bind9 dlz driver for Samba
Copyright (C) 2010 Andrew Tridgell
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see .
*/
#include "includes.h"
#include "talloc.h"
#include "param/param.h"
#include "lib/events/events.h"
#include "dsdb/samdb/samdb.h"
#include "dsdb/common/util.h"
#include "auth/session.h"
#include "auth/gensec/gensec.h"
#include "gen_ndr/ndr_dnsp.h"
#include "lib/cmdline/popt_common.h"
#include "lib/cmdline/popt_credentials.h"
#include "ldb_module.h"
#include "dlz_minimal.h"
struct dlz_bind9_data {
struct ldb_context *samdb;
struct tevent_context *ev_ctx;
struct loadparm_context *lp;
bool transaction_started;
/* helper functions from the dlz_dlopen driver */
void (*log)(int level, const char *fmt, ...);
isc_result_t (*putrr)(dns_sdlzlookup_t *handle, const char *type,
dns_ttl_t ttl, const char *data);
isc_result_t (*putnamedrr)(dns_sdlzlookup_t *handle, const char *name,
const char *type, dns_ttl_t ttl, const char *data);
isc_result_t (*writeable_zone)(dns_view_t *view, const char *zone_name);
};
static const char *zone_prefixes[] = {
"CN=MicrosoftDNS,DC=DomainDnsZones",
"CN=MicrosoftDNS,DC=ForestDnsZones",
NULL
};
/*
return the version of the API
*/
_PUBLIC_ int dlz_version(unsigned int *flags)
{
return DLZ_DLOPEN_VERSION;
}
/*
remember a helper function from the bind9 dlz_dlopen driver
*/
static void b9_add_helper(struct dlz_bind9_data *state, const char *helper_name, void *ptr)
{
if (strcmp(helper_name, "log") == 0) {
state->log = ptr;
}
if (strcmp(helper_name, "putrr") == 0) {
state->putrr = ptr;
}
if (strcmp(helper_name, "putnamedrr") == 0) {
state->putnamedrr = ptr;
}
if (strcmp(helper_name, "writeable_zone") == 0) {
state->writeable_zone = ptr;
}
}
/*
format a record for bind9
*/
static bool b9_format(struct dlz_bind9_data *state,
TALLOC_CTX *mem_ctx,
struct dnsp_DnssrvRpcRecord *rec,
const char **type, const char **data)
{
switch (rec->wType) {
case DNS_TYPE_A:
*type = "a";
*data = rec->data.ipv4;
break;
case DNS_TYPE_AAAA:
*type = "aaaa";
*data = rec->data.ipv6;
break;
case DNS_TYPE_CNAME:
*type = "cname";
*data = rec->data.cname;
break;
case DNS_TYPE_TXT:
*type = "txt";
*data = rec->data.txt;
break;
case DNS_TYPE_PTR:
*type = "ptr";
*data = rec->data.ptr;
break;
case DNS_TYPE_SRV:
*type = "srv";
*data = talloc_asprintf(mem_ctx, "%u %u %u %s",
rec->data.srv.wPriority,
rec->data.srv.wWeight,
rec->data.srv.wPort,
rec->data.srv.nameTarget);
break;
case DNS_TYPE_MX:
*type = "mx";
*data = talloc_asprintf(mem_ctx, "%u %s",
rec->data.srv.wPriority,
rec->data.srv.nameTarget);
break;
case DNS_TYPE_HINFO:
*type = "hinfo";
*data = talloc_asprintf(mem_ctx, "%s %s",
rec->data.hinfo.cpu,
rec->data.hinfo.os);
break;
case DNS_TYPE_NS:
*type = "ns";
*data = rec->data.ns;
break;
case DNS_TYPE_SOA:
*type = "soa";
*data = talloc_asprintf(mem_ctx, "%s %s %u %u %u %u %u",
rec->data.soa.mname,
rec->data.soa.rname,
rec->data.soa.serial,
rec->data.soa.refresh,
rec->data.soa.retry,
rec->data.soa.expire,
rec->data.soa.minimum);
break;
default:
state->log(ISC_LOG_ERROR, "samba b9_putrr: unhandled record type %u",
rec->wType);
return false;
}
return true;
}
/*
parse a record from bind9
*/
static bool b9_parse(struct dlz_bind9_data *state,
TALLOC_CTX *mem_ctx,
struct dnsp_DnssrvRpcRecord *rec,
const char **type, const char **data)
{
return false;
}
/*
send a resource recond to bind9
*/
static isc_result_t b9_putrr(struct dlz_bind9_data *state,
void *handle, struct dnsp_DnssrvRpcRecord *rec,
const char **types)
{
isc_result_t result;
const char *type, *data;
TALLOC_CTX *tmp_ctx = talloc_new(state);
if (!b9_format(state, tmp_ctx, rec, &type, &data)) {
return ISC_R_FAILURE;
}
if (data == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (types) {
int i;
for (i=0; types[i]; i++) {
if (strcmp(types[i], type) == 0) break;
}
if (types[i] == NULL) {
/* skip it */
return ISC_R_SUCCESS;
}
}
result = state->putrr(handle, type, rec->dwTtlSeconds, data);
if (result != ISC_R_SUCCESS) {
state->log(ISC_LOG_ERROR, "Failed to put rr");
}
talloc_free(tmp_ctx);
return result;
}
/*
send a named resource recond to bind9
*/
static isc_result_t b9_putnamedrr(struct dlz_bind9_data *state,
void *handle, const char *name,
struct dnsp_DnssrvRpcRecord *rec)
{
isc_result_t result;
const char *type, *data;
TALLOC_CTX *tmp_ctx = talloc_new(state);
if (!b9_format(state, tmp_ctx, rec, &type, &data)) {
return ISC_R_FAILURE;
}
if (data == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
result = state->putnamedrr(handle, name, type, rec->dwTtlSeconds, data);
if (result != ISC_R_SUCCESS) {
state->log(ISC_LOG_ERROR, "Failed to put named rr '%s'", name);
}
talloc_free(tmp_ctx);
return result;
}
struct b9_options {
const char *url;
};
/*
parse options
*/
static isc_result_t parse_options(struct dlz_bind9_data *state,
unsigned int argc, char *argv[],
struct b9_options *options)
{
int opt;
poptContext pc;
struct poptOption long_options[] = {
{ "url", 'H', POPT_ARG_STRING, &options->url, 0, "database URL", "URL" },
{ NULL }
};
struct poptOption **popt_options;
int ret;
popt_options = ldb_module_popt_options(state->samdb);
(*popt_options) = long_options;
ret = ldb_modules_hook(state->samdb, LDB_MODULE_HOOK_CMDLINE_OPTIONS);
if (ret != LDB_SUCCESS) {
state->log(ISC_LOG_ERROR, "dlz samba: failed cmdline hook");
return ISC_R_FAILURE;
}
pc = poptGetContext("dlz_bind9", argc, (const char **)argv, *popt_options,
POPT_CONTEXT_KEEP_FIRST);
while ((opt = poptGetNextOpt(pc)) != -1) {
switch (opt) {
default:
state->log(ISC_LOG_ERROR, "dlz samba: Invalid option %s: %s",
poptBadOption(pc, 0), poptStrerror(opt));
return ISC_R_FAILURE;
}
}
ret = ldb_modules_hook(state->samdb, LDB_MODULE_HOOK_CMDLINE_PRECONNECT);
if (ret != LDB_SUCCESS) {
state->log(ISC_LOG_ERROR, "dlz samba: failed cmdline preconnect");
return ISC_R_FAILURE;
}
return ISC_R_SUCCESS;
}
/*
called to initialise the driver
*/
_PUBLIC_ isc_result_t dlz_create(const char *dlzname,
unsigned int argc, char *argv[],
void **dbdata, ...)
{
struct dlz_bind9_data *state;
const char *helper_name;
va_list ap;
isc_result_t result;
TALLOC_CTX *tmp_ctx;
int ret;
struct ldb_dn *dn;
struct b9_options options;
ZERO_STRUCT(options);
state = talloc_zero(NULL, struct dlz_bind9_data);
if (state == NULL) {
return ISC_R_NOMEMORY;
}
tmp_ctx = talloc_new(state);
/* fill in the helper functions */
va_start(ap, dbdata);
while ((helper_name = va_arg(ap, const char *)) != NULL) {
b9_add_helper(state, helper_name, va_arg(ap, void*));
}
va_end(ap);
state->ev_ctx = s4_event_context_init(state);
if (state->ev_ctx == NULL) {
result = ISC_R_NOMEMORY;
goto failed;
}
state->samdb = ldb_init(state, state->ev_ctx);
if (state->samdb == NULL) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: Failed to create ldb");
result = ISC_R_FAILURE;
goto failed;
}
result = parse_options(state, argc, argv, &options);
if (result != ISC_R_SUCCESS) {
goto failed;
}
state->lp = loadparm_init_global(true);
if (state->lp == NULL) {
result = ISC_R_NOMEMORY;
goto failed;
}
if (options.url == NULL) {
options.url = talloc_asprintf(tmp_ctx, "ldapi://%s",
private_path(tmp_ctx, state->lp, "ldap_priv/ldapi"));
if (options.url == NULL) {
result = ISC_R_NOMEMORY;
goto failed;
}
}
ret = ldb_connect(state->samdb, options.url, 0, NULL);
if (ret == -1) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: Failed to connect to %s - %s",
options.url, ldb_errstring(state->samdb));
result = ISC_R_FAILURE;
goto failed;
}
ret = ldb_modules_hook(state->samdb, LDB_MODULE_HOOK_CMDLINE_POSTCONNECT);
if (ret != LDB_SUCCESS) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: Failed postconnect for %s - %s",
options.url, ldb_errstring(state->samdb));
result = ISC_R_FAILURE;
goto failed;
}
dn = ldb_get_default_basedn(state->samdb);
if (dn == NULL) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: Unable to get basedn for %s - %s",
options.url, ldb_errstring(state->samdb));
result = ISC_R_FAILURE;
goto failed;
}
state->log(ISC_LOG_INFO, "samba dlz_bind9: started for DN %s",
ldb_dn_get_linearized(dn));
*dbdata = state;
talloc_free(tmp_ctx);
return ISC_R_SUCCESS;
failed:
talloc_free(state);
return result;
}
/*
shutdown the backend
*/
_PUBLIC_ void dlz_destroy(void *dbdata)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
state->log(ISC_LOG_INFO, "samba dlz_bind9: shutting down");
talloc_free(state);
}
/*
see if we handle a given zone
*/
_PUBLIC_ isc_result_t dlz_findzonedb(void *dbdata, const char *name)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
int ret;
TALLOC_CTX *tmp_ctx = talloc_new(state);
const char *attrs[] = { NULL };
int i;
for (i=0; zone_prefixes[i]; i++) {
struct ldb_dn *dn;
struct ldb_result *res;
dn = ldb_dn_copy(tmp_ctx, ldb_get_default_basedn(state->samdb));
if (dn == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (!ldb_dn_add_child_fmt(dn, "DC=%s,%s", name, zone_prefixes[i])) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_BASE, attrs, "objectClass=dnsZone");
if (ret == LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ISC_R_SUCCESS;
}
talloc_free(dn);
}
talloc_free(tmp_ctx);
return ISC_R_NOTFOUND;
}
/*
lookup one record
*/
static isc_result_t dlz_lookup_types(struct dlz_bind9_data *state,
const char *zone, const char *name,
dns_sdlzlookup_t *lookup,
const char **types)
{
TALLOC_CTX *tmp_ctx = talloc_new(state);
const char *attrs[] = { "dnsRecord", NULL };
int ret, i;
struct ldb_result *res;
struct ldb_message_element *el;
struct ldb_dn *dn;
for (i=0; zone_prefixes[i]; i++) {
dn = ldb_dn_copy(tmp_ctx, ldb_get_default_basedn(state->samdb));
if (dn == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (!ldb_dn_add_child_fmt(dn, "DC=%s,DC=%s,%s", name, zone, zone_prefixes[i])) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_BASE,
attrs, "objectClass=dnsNode");
if (ret == LDB_SUCCESS) {
break;
}
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ISC_R_NOTFOUND;
}
el = ldb_msg_find_element(res->msgs[0], "dnsRecord");
if (el == NULL || el->num_values == 0) {
talloc_free(tmp_ctx);
return ISC_R_NOTFOUND;
}
for (i=0; inum_values; i++) {
struct dnsp_DnssrvRpcRecord rec;
enum ndr_err_code ndr_err;
isc_result_t result;
ndr_err = ndr_pull_struct_blob(&el->values[i], tmp_ctx, &rec,
(ndr_pull_flags_fn_t)ndr_pull_dnsp_DnssrvRpcRecord);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: failed to parse dnsRecord for %s",
ldb_dn_get_linearized(dn));
talloc_free(tmp_ctx);
return ISC_R_FAILURE;
}
result = b9_putrr(state, lookup, &rec, types);
if (result != ISC_R_SUCCESS) {
talloc_free(tmp_ctx);
return result;
}
}
talloc_free(tmp_ctx);
return ISC_R_SUCCESS;
}
/*
lookup one record
*/
_PUBLIC_ isc_result_t dlz_lookup(const char *zone, const char *name,
void *dbdata, dns_sdlzlookup_t *lookup)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
return dlz_lookup_types(state, zone, name, lookup, NULL);
}
/*
see if a zone transfer is allowed
*/
_PUBLIC_ isc_result_t dlz_allowzonexfr(void *dbdata, const char *name, const char *client)
{
/* just say yes for all our zones for now */
return dlz_findzonedb(dbdata, name);
}
/*
perform a zone transfer
*/
_PUBLIC_ isc_result_t dlz_allnodes(const char *zone, void *dbdata,
dns_sdlzallnodes_t *allnodes)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
const char *attrs[] = { "dnsRecord", NULL };
int ret, i, j;
struct ldb_dn *dn;
struct ldb_result *res;
TALLOC_CTX *tmp_ctx = talloc_new(state);
for (i=0; zone_prefixes[i]; i++) {
dn = ldb_dn_copy(tmp_ctx, ldb_get_default_basedn(state->samdb));
if (dn == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (!ldb_dn_add_child_fmt(dn, "DC=%s,%s", zone, zone_prefixes[i])) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_SUBTREE,
attrs, "objectClass=dnsNode");
if (ret == LDB_SUCCESS) {
break;
}
}
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return ISC_R_NOTFOUND;
}
for (i=0; icount; i++) {
struct ldb_message_element *el;
TALLOC_CTX *el_ctx = talloc_new(tmp_ctx);
const char *rdn, *name;
const struct ldb_val *v;
el = ldb_msg_find_element(res->msgs[i], "dnsRecord");
if (el == NULL || el->num_values == 0) {
state->log(ISC_LOG_INFO, "failed to find dnsRecord for %s",
ldb_dn_get_linearized(dn));
talloc_free(el_ctx);
continue;
}
v = ldb_dn_get_rdn_val(res->msgs[i]->dn);
if (v == NULL) {
state->log(ISC_LOG_INFO, "failed to find RDN for %s",
ldb_dn_get_linearized(dn));
talloc_free(el_ctx);
continue;
}
rdn = talloc_strndup(el_ctx, (char *)v->data, v->length);
if (rdn == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (strcmp(rdn, "@") == 0) {
name = zone;
} else {
name = talloc_asprintf(el_ctx, "%s.%s", rdn, zone);
}
if (name == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
for (j=0; jnum_values; j++) {
struct dnsp_DnssrvRpcRecord rec;
enum ndr_err_code ndr_err;
isc_result_t result;
ndr_err = ndr_pull_struct_blob(&el->values[j], el_ctx, &rec,
(ndr_pull_flags_fn_t)ndr_pull_dnsp_DnssrvRpcRecord);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: failed to parse dnsRecord for %s",
ldb_dn_get_linearized(dn));
talloc_free(el_ctx);
continue;
}
result = b9_putnamedrr(state, allnodes, name, &rec);
if (result != ISC_R_SUCCESS) {
talloc_free(el_ctx);
continue;
}
}
}
talloc_free(tmp_ctx);
return ISC_R_SUCCESS;
}
/*
start a transaction
*/
_PUBLIC_ isc_result_t dlz_newversion(const char *zone, void *dbdata, void **versionp)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
state->log(ISC_LOG_INFO, "samba dlz_bind9: starting transaction on zone %s", zone);
if (state->transaction_started) {
state->log(ISC_LOG_INFO, "samba dlz_bind9: transaction already started for zone %s", zone);
return ISC_R_FAILURE;
}
state->transaction_started = true;
*versionp = (void *) &state->transaction_started;
return ISC_R_SUCCESS;
}
/*
end a transaction
*/
_PUBLIC_ void dlz_closeversion(const char *zone, isc_boolean_t commit,
void *dbdata, void **versionp)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
if (!state->transaction_started) {
state->log(ISC_LOG_INFO, "samba dlz_bind9: transaction not started for zone %s", zone);
*versionp = NULL;
return;
}
state->transaction_started = false;
*versionp = NULL;
if (commit) {
state->log(ISC_LOG_INFO, "samba dlz_bind9: committing transaction on zone %s", zone);
} else {
state->log(ISC_LOG_INFO, "samba dlz_bind9: cancelling transaction on zone %s", zone);
}
}
/*
see if there is a SOA record for a zone
*/
static bool b9_has_soa(struct dlz_bind9_data *state, struct ldb_dn *dn, const char *zone)
{
const char *attrs[] = { "dnsRecord", NULL };
struct ldb_result *res;
struct ldb_message_element *el;
TALLOC_CTX *tmp_ctx = talloc_new(state);
int ret, i;
if (!ldb_dn_add_child_fmt(dn, "DC=@,DC=%s", zone)) {
talloc_free(tmp_ctx);
return false;
}
ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_BASE,
attrs, "objectClass=dnsNode");
if (ret != LDB_SUCCESS) {
talloc_free(tmp_ctx);
return false;
}
el = ldb_msg_find_element(res->msgs[0], "dnsRecord");
if (el == NULL) {
talloc_free(tmp_ctx);
return false;
}
for (i=0; inum_values; i++) {
struct dnsp_DnssrvRpcRecord rec;
enum ndr_err_code ndr_err;
ndr_err = ndr_pull_struct_blob(&el->values[i], tmp_ctx, &rec,
(ndr_pull_flags_fn_t)ndr_pull_dnsp_DnssrvRpcRecord);
if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
continue;
}
if (rec.wType == DNS_TYPE_SOA) {
talloc_free(tmp_ctx);
return true;
}
}
talloc_free(tmp_ctx);
return false;
}
/*
configure a writeable zone
*/
_PUBLIC_ isc_result_t dlz_configure(dns_view_t *view, void *dbdata)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
TALLOC_CTX *tmp_ctx;
struct ldb_dn *dn;
int i;
state->log(ISC_LOG_INFO, "samba dlz_bind9: starting configure");
if (state->writeable_zone == NULL) {
state->log(ISC_LOG_INFO, "samba dlz_bind9: no writeable_zone method available");
return ISC_R_FAILURE;
}
tmp_ctx = talloc_new(state);
for (i=0; zone_prefixes[i]; i++) {
const char *attrs[] = { "name", NULL };
int j, ret;
struct ldb_result *res;
dn = ldb_dn_copy(tmp_ctx, ldb_get_default_basedn(state->samdb));
if (dn == NULL) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
if (!ldb_dn_add_child_fmt(dn, "%s", zone_prefixes[i])) {
talloc_free(tmp_ctx);
return ISC_R_NOMEMORY;
}
ret = ldb_search(state->samdb, tmp_ctx, &res, dn, LDB_SCOPE_SUBTREE,
attrs, "objectClass=dnsZone");
if (ret != LDB_SUCCESS) {
continue;
}
for (j=0; jcount; j++) {
isc_result_t result;
const char *zone = ldb_msg_find_attr_as_string(res->msgs[j], "name", NULL);
if (zone == NULL) {
continue;
}
if (!b9_has_soa(state, dn, zone)) {
continue;
}
result = state->writeable_zone(view, zone);
if (result != ISC_R_SUCCESS) {
state->log(ISC_LOG_ERROR, "samba dlz_bind9: Failed to configure zone '%s'",
zone);
talloc_free(tmp_ctx);
return result;
}
state->log(ISC_LOG_INFO, "samba dlz_bind9: configured writeable zone '%s'", zone);
}
}
talloc_free(tmp_ctx);
return ISC_R_SUCCESS;
}
/*
authorize a zone update
*/
_PUBLIC_ isc_boolean_t dlz_ssumatch(const char *signer, const char *name, const char *tcpaddr,
const char *type, const char *key, uint32_t keydatalen, uint8_t *keydata,
void *dbdata)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
state->log(ISC_LOG_INFO, "samba dlz_bind9: allowing update of signer=%s name=%s tcpaddr=%s type=%s key=%s keydatalen=%u",
signer, name, tcpaddr, type, key, keydatalen);
return true;
}
_PUBLIC_ isc_result_t dlz_addrdataset(const char *name, const char *rdatastr, void *dbdata, void *version)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
if (version != (void *) &state->transaction_started) {
return ISC_R_FAILURE;
}
state->log(ISC_LOG_INFO, "samba dlz_bind9: adding rdataset %s '%s'", name, rdatastr);
return ISC_R_SUCCESS;
}
_PUBLIC_ isc_result_t dlz_subrdataset(const char *name, const char *rdatastr, void *dbdata, void *version)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
if (version != (void *) &state->transaction_started) {
return ISC_R_FAILURE;
}
state->log(ISC_LOG_INFO, "samba dlz_bind9: subtracting rdataset %s '%s'", name, rdatastr);
return ISC_R_SUCCESS;
}
_PUBLIC_ isc_result_t dlz_delrdataset(const char *name, void *dbdata, void *version)
{
struct dlz_bind9_data *state = talloc_get_type_abort(dbdata, struct dlz_bind9_data);
if (version != (void *) &state->transaction_started) {
return ISC_R_FAILURE;
}
state->log(ISC_LOG_INFO, "samba dlz_bind9: deleting rdataset %s", name);
return ISC_R_SUCCESS;
}