errno_t ad_dyndns_init(struct be_ctx *be_ctx,
struct ad_options *ad_opts)
{
errno_t ret;
/* nsupdate is available. Dynamic updates
* are supported
*/
ret = ad_get_dyndns_options(be_ctx, ad_opts);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not set AD options\n"));
return ret;
}
if (dp_opt_get_bool(ad_opts->dyndns_ctx->opts,
DP_OPT_DYNDNS_UPDATE) == false) {
DEBUG(SSSDBG_CONF_SETTINGS, ("Dynamic DNS updates not set\n"));
return EOK;
}
DEBUG(SSSDBG_CONF_SETTINGS,
("Dynamic DNS updates are on. Checking for nsupdate..\n"));
ret = be_nsupdate_check();
if (ret == ENOENT) {
DEBUG(SSSDBG_MINOR_FAILURE,
("DNS updates requested but nsupdate not available\n"));
return EOK;
} else if (ret != EOK) {
DEBUG(SSSDBG_OP_FAILURE, ("Could not check for nsupdate\n"));
return ret;
}
ad_opts->be_res = be_ctx->be_res;
if (ad_opts->be_res == NULL) {
DEBUG(SSSDBG_OP_FAILURE, ("Resolver must be initialized in order "
"to use the AD dynamic DNS updates\n"));
return EINVAL;
}
ret = be_nsupdate_init_timer(ad_opts->dyndns_ctx, be_ctx->ev,
ad_dyndns_timer, ad_opts);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not set up periodic update\n"));
return ret;
}
ret = be_add_online_cb(be_ctx, be_ctx,
ad_dyndns_update,
ad_opts, NULL);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, ("Could not set up online callback\n"));
return ret;
}
return EOK;
}
int sssm_ipa_id_init(struct be_ctx *bectx,
struct bet_ops **ops,
void **pvt_data)
{
struct ipa_id_ctx *ipa_ctx;
struct sdap_id_ctx *sdap_ctx;
const char *hostname;
const char *ipa_domain;
const char *ipa_servers;
struct ipa_srv_plugin_ctx *srv_ctx;
bool server_mode;
int ret;
if (!ipa_options) {
ret = common_ipa_init(bectx);
if (ret != EOK) {
return ret;
}
}
if (ipa_options->id_ctx) {
/* already initialized */
*ops = &ipa_id_ops;
*pvt_data = ipa_options->id_ctx;
return EOK;
}
ipa_ctx = talloc_zero(ipa_options, struct ipa_id_ctx);
if (!ipa_ctx) {
return ENOMEM;
}
ipa_options->id_ctx = ipa_ctx;
ipa_ctx->ipa_options = ipa_options;
sdap_ctx = sdap_id_ctx_new(ipa_options, bectx, ipa_options->service->sdap);
if (sdap_ctx == NULL) {
return ENOMEM;
}
ipa_ctx->sdap_id_ctx = sdap_ctx;
ret = ipa_get_id_options(ipa_options, bectx->cdb,
bectx->conf_path,
&sdap_ctx->opts);
if (ret != EOK) {
goto done;
}
ret = ipa_get_dyndns_options(bectx, ipa_options);
if (ret != EOK) {
goto done;
}
if (dp_opt_get_bool(ipa_options->dyndns_ctx->opts, DP_OPT_DYNDNS_UPDATE)) {
/* Perform automatic DNS updates when the
* IP address changes.
* Register a callback for successful LDAP
* reconnections. This is the easiest way to
* identify that we have gone online.
*/
DEBUG(SSSDBG_CONF_SETTINGS,
"Dynamic DNS updates are on. Checking for nsupdate..\n");
ret = be_nsupdate_check();
if (ret == EOK) {
/* nsupdate is available. Dynamic updates
* are supported
*/
ret = ipa_dyndns_init(sdap_ctx->be, ipa_options);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Failure setting up automatic DNS update\n");
/* We will continue without DNS updating */
}
}
}
ret = setup_tls_config(sdap_ctx->opts->basic);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "setup_tls_config failed [%d][%s].\n",
ret, strerror(ret));
goto done;
}
/* Set up the ID mapping object */
ret = ipa_idmap_init(sdap_ctx, sdap_ctx, &sdap_ctx->opts->idmap_ctx);
if (ret != EOK) {
DEBUG(SSSDBG_FATAL_FAILURE,
"Could not initialize ID mapping. In case ID mapping properties "
"changed on the server, please remove the SSSD database\n");
goto done;
}
ret = ldap_id_setup_tasks(sdap_ctx);
if (ret != EOK) {
goto done;
}
ret = sdap_setup_child();
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "setup_child failed [%d][%s].\n",
ret, strerror(ret));
goto done;
}
/* setup SRV lookup plugin */
hostname = dp_opt_get_string(ipa_options->basic, IPA_HOSTNAME);
server_mode = dp_opt_get_bool(ipa_options->basic, IPA_SERVER_MODE);
if (server_mode == true) {
ipa_ctx->view_name = talloc_strdup(ipa_ctx, SYSDB_DEFAULT_VIEW_NAME);
if (ipa_ctx->view_name == NULL) {
DEBUG(SSSDBG_OP_FAILURE, "talloc_strdup failed.\n");
ret = ENOMEM;
goto done;
}
ret = sysdb_update_view_name(bectx->domain->sysdb, ipa_ctx->view_name);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Cannot add/update view name to sysdb.\n");
goto done;
}
ipa_servers = dp_opt_get_string(ipa_options->basic, IPA_SERVER);
if (srv_in_server_list(ipa_servers) == true
|| dp_opt_get_bool(ipa_options->basic,
IPA_ENABLE_DNS_SITES) == true) {
DEBUG(SSSDBG_MINOR_FAILURE, "SRV resolution or IPA sites enabled "
"on the IPA server. Site discovery of trusted AD servers "
"might not work\n");
/* If SRV discovery is enabled on the server and
* dns_discovery_domain is set explicitly, then
* the current failover code would use the dns_discovery
* domain to try to find AD servers and fail
*/
if (dp_opt_get_string(bectx->be_res->opts,
DP_RES_OPT_DNS_DOMAIN)) {
sss_log(SSS_LOG_ERR, ("SRV discovery is enabled on the IPA "
"server while using custom dns_discovery_domain. "
"DNS discovery of trusted AD domain will likely fail. "
"It is recommended not to use SRV discovery or the "
"dns_discovery_domain option for the IPA domain while "
"running on the server itself\n"));
DEBUG(SSSDBG_CRIT_FAILURE, "SRV discovery is enabled on IPA "
"server while using custom dns_discovery_domain. "
"DNS discovery of trusted AD domain will likely fail. "
"It is recommended not to use SRV discovery or the "
"dns_discovery_domain option for the IPA domain while "
"running on the server itself\n");
}
ret = be_fo_set_dns_srv_lookup_plugin(bectx, hostname);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to set SRV lookup plugin "
"[%d]: %s\n", ret, strerror(ret));
goto done;
}
} else {
/* In server mode we need to ignore the dns_discovery_domain if set
* and only discover servers based on AD domains
*/
ret = dp_opt_set_string(bectx->be_res->opts, DP_RES_OPT_DNS_DOMAIN,
NULL);
if (ret != EOK) {
DEBUG(SSSDBG_MINOR_FAILURE, "Could not reset the "
"dns_discovery_domain, trusted AD domains discovery "
"might fail. Please remove dns_discovery_domain "
"from the config file and restart the SSSD\n");
} else {
DEBUG(SSSDBG_CONF_SETTINGS, "The value of dns_discovery_domain "
"will be ignored in ipa_server_mode\n");
}
}
} else {
ret = sysdb_get_view_name(ipa_ctx, bectx->domain->sysdb,
&ipa_ctx->view_name);
if (ret != EOK) {
if (ret == ENOENT) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Cannot find view name in the cache. " \
"Will do online lookup later.\n");
} else {
DEBUG(SSSDBG_OP_FAILURE, "sysdb_get_view_name failed.\n");
goto done;
}
}
if (dp_opt_get_bool(ipa_options->basic, IPA_ENABLE_DNS_SITES)) {
/* use IPA plugin */
ipa_domain = dp_opt_get_string(ipa_options->basic, IPA_DOMAIN);
srv_ctx = ipa_srv_plugin_ctx_init(bectx, bectx->be_res->resolv,
hostname, ipa_domain);
if (srv_ctx == NULL) {
DEBUG(SSSDBG_FATAL_FAILURE, "Out of memory?\n");
ret = ENOMEM;
goto done;
}
be_fo_set_srv_lookup_plugin(bectx, ipa_srv_plugin_send,
ipa_srv_plugin_recv, srv_ctx, "IPA");
} else {
/* fall back to standard plugin on clients. */
ret = be_fo_set_dns_srv_lookup_plugin(bectx, hostname);
if (ret != EOK) {
DEBUG(SSSDBG_CRIT_FAILURE, "Unable to set SRV lookup plugin "
"[%d]: %s\n", ret, strerror(ret));
goto done;
}
}
}
/* setup periodical refresh of expired records */
ret = sdap_refresh_init(bectx->refresh_ctx, sdap_ctx);
if (ret != EOK && ret != EEXIST) {
DEBUG(SSSDBG_MINOR_FAILURE, "Periodical refresh "
"will not work [%d]: %s\n", ret, strerror(ret));
}
ipa_ctx->sdap_id_ctx->opts->ext_ctx = ipa_create_ext_members_ctx(
ipa_ctx->sdap_id_ctx->opts,
ipa_ctx);
if (ipa_ctx->sdap_id_ctx->opts->ext_ctx == NULL) {
DEBUG(SSSDBG_CRIT_FAILURE,
"Unable to set SRV the extrernal group ctx\n");
ret = ENOMEM;
goto done;
}
*ops = &ipa_id_ops;
*pvt_data = ipa_ctx;
ret = EOK;
done:
if (ret != EOK) {
talloc_zfree(ipa_options->id_ctx);
}
return ret;
}