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/*
SSSD
ipa_dyndns.c
Authors:
Stephen Gallagher <sgallagh@redhat.com>
Copyright (C) 2010 Red Hat
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 <http://www.gnu.org/licenses/>.
*/
#include <ctype.h>
#include "util/util.h"
#include "providers/ldap/sdap_dyndns.h"
#include "providers/ipa/ipa_common.h"
#include "providers/ipa/ipa_dyndns.h"
#include "providers/data_provider.h"
void ipa_dyndns_update(void *pvt);
errno_t ipa_dyndns_init(struct be_ctx *be_ctx,
struct ipa_options *ctx)
{
errno_t ret;
ctx->be_res = be_ctx->be_res;
if (ctx->be_res == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("Resolver must be initialized in order "
"to use the IPA dynamic DNS updates\n"));
return EINVAL;
}
ret = be_add_online_cb(be_ctx, be_ctx,
ipa_dyndns_update,
ctx, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not set up online callback\n"));
return ret;
}
return EOK;
}
static struct tevent_req *ipa_dyndns_update_send(struct ipa_options *ctx);
static errno_t ipa_dyndns_update_recv(struct tevent_req *req);
static void ipa_dyndns_nsupdate_done(struct tevent_req *subreq);
void ipa_dyndns_update(void *pvt)
{
struct ipa_options *ctx = talloc_get_type(pvt, struct ipa_options);
struct tevent_req *req = ipa_dyndns_update_send(ctx);
if (req == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not update DNS\n"));
return;
}
tevent_req_set_callback(req, ipa_dyndns_nsupdate_done, NULL);
}
static void ipa_dyndns_nsupdate_done(struct tevent_req *req)
{
int ret = ipa_dyndns_update_recv(req);
talloc_free(req);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("Updating DNS entry failed [%d]: %s\n",
ret, sss_strerror(ret)));
return;
}
DEBUG(SSSDBG_OP_FAILURE, ("DNS update finished\n"));
}
struct ipa_dyndns_update_state {
struct ipa_options *ipa_ctx;
};
static void ipa_dyndns_sdap_update_done(struct tevent_req *subreq);
static struct tevent_req *
ipa_dyndns_update_send(struct ipa_options *ctx)
{
int ret;
struct ipa_dyndns_update_state *state;
struct tevent_req *req, *subreq;
struct sdap_id_ctx *sdap_ctx = ctx->id_ctx->sdap_id_ctx;
char *dns_zone;
const char *servername;
int i;
DEBUG(SSSDBG_TRACE_FUNC, ("Performing update\n"));
req = tevent_req_create(ctx, &state, struct ipa_dyndns_update_state);
if (req == NULL) {
return NULL;
}
state->ipa_ctx = ctx;
dns_zone = dp_opt_get_string(ctx->basic, IPA_DOMAIN);
if (!dns_zone) {
ret = EIO;
goto done;
}
/* The DNS zone for IPA is the lower-case
* version of the IPA domain
*/
for (i = 0; dns_zone[i] != '\0'; i++) {
dns_zone[i] = tolower(dns_zone[i]);
}
if (strncmp(ctx->service->sdap->uri,
"ldap://", 7) != 0) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Unexpected format of LDAP URI.\n"));
ret = EIO;
goto done;
}
servername = ctx->service->sdap->uri + 7;
if (!servername) {
ret = EIO;
goto done;
}
subreq = sdap_dyndns_update_send(state, sdap_ctx->be->ev,
sdap_ctx->be, sdap_ctx,
dp_opt_get_string(ctx->basic,
IPA_DYNDNS_IFACE),
dp_opt_get_string(ctx->basic,
IPA_HOSTNAME),
dns_zone,
dp_opt_get_string(ctx->basic,
IPA_KRB5_REALM),
servername,
dp_opt_get_int(ctx->basic,
IPA_DYNDNS_TTL),
true);
if (!subreq) {
ret = EIO;
DEBUG(SSSDBG_OP_FAILURE,
("sdap_id_op_connect_send failed: [%d](%s)\n",
ret, sss_strerror(ret)));
goto done;
}
tevent_req_set_callback(subreq, ipa_dyndns_sdap_update_done, req);
ret = EOK;
done:
if (ret != EOK) {
tevent_req_error(req, ret);
tevent_req_post(req, sdap_ctx->be->ev);
}
return req;
}
static void ipa_dyndns_sdap_update_done(struct tevent_req *subreq)
{
struct tevent_req *req = tevent_req_callback_data(subreq, struct tevent_req);
errno_t ret;
ret = sdap_dyndns_update_recv(subreq);
talloc_zfree(subreq);
if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE,
("Dynamic DNS update failed [%d]: %s\n", ret, sss_strerror(ret)));
tevent_req_error(req, ret);
return;
}
tevent_req_done(req);
}
static errno_t ipa_dyndns_update_recv(struct tevent_req *req)
{
TEVENT_REQ_RETURN_ON_ERROR(req);
return EOK;
}
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