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-rw-r--r--src/providers/ad/ad_common.c18
-rw-r--r--src/providers/ad/ad_common.h13
-rw-r--r--src/providers/ad/ad_dyndns.c256
-rw-r--r--src/providers/ad/ad_init.c8
-rw-r--r--src/providers/ad/ad_opts.h11
5 files changed, 306 insertions, 0 deletions
diff --git a/src/providers/ad/ad_common.c b/src/providers/ad/ad_common.c
index dff1071d..e0a55c6d 100644
--- a/src/providers/ad/ad_common.c
+++ b/src/providers/ad/ad_common.c
@@ -23,6 +23,7 @@
#include "providers/ad/ad_common.h"
#include "providers/ad/ad_opts.h"
+#include "providers/dp_dyndns.h"
errno_t
ad_get_common_options(TALLOC_CTX *mem_ctx,
@@ -698,3 +699,20 @@ done:
talloc_free(tmp_ctx);
return ret;
}
+
+errno_t ad_get_dyndns_options(struct be_ctx *be_ctx,
+ struct ad_options *ad_opts)
+{
+ errno_t ret;
+
+ ret = be_nsupdate_init(ad_opts, be_ctx, ad_dyndns_opts, ad_dyndns_timer,
+ ad_opts, &ad_opts->dyndns_ctx);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_OP_FAILURE,
+ ("Cannot initialize AD dyndns opts [%d]: %s\n",
+ ret, sss_strerror(ret)));
+ return ret;
+ }
+
+ return EOK;
+}
diff --git a/src/providers/ad/ad_common.h b/src/providers/ad/ad_common.h
index 7be15ba9..792f32e0 100644
--- a/src/providers/ad/ad_common.h
+++ b/src/providers/ad/ad_common.h
@@ -64,6 +64,10 @@ struct ad_options {
/* Auth and chpass Provider */
struct dp_option *auth;
struct krb5_ctx *auth_ctx;
+
+ /* Dynamic DNS updates */
+ struct be_resolv_ctx *be_res;
+ struct be_nsupdate_ctx *dyndns_ctx;
};
errno_t
@@ -91,4 +95,13 @@ ad_get_auth_options(TALLOC_CTX *mem_ctx,
struct be_ctx *bectx,
struct dp_option **_opts);
+errno_t
+ad_get_dyndns_options(struct be_ctx *be_ctx,
+ struct ad_options *ad_opts);
+
+/* AD dynamic DNS updates */
+errno_t ad_dyndns_init(struct be_ctx *be_ctx,
+ struct ad_options *ctx);
+void ad_dyndns_timer(void *pvt);
+
#endif /* AD_COMMON_H_ */
diff --git a/src/providers/ad/ad_dyndns.c b/src/providers/ad/ad_dyndns.c
new file mode 100644
index 00000000..2b2d2462
--- /dev/null
+++ b/src/providers/ad/ad_dyndns.c
@@ -0,0 +1,256 @@
+/*
+ SSSD
+
+ ad_dyndns.c
+
+ Authors:
+ Jakub Hrozek <jhrozek@redhat.com>
+
+ Copyright (C) 2013 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/data_provider.h"
+#include "providers/dp_dyndns.h"
+#include "providers/ad/ad_common.h"
+
+void ad_dyndns_update(void *pvt);
+
+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_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;
+}
+
+static void ad_dyndns_timer_connected(struct tevent_req *req);
+
+void ad_dyndns_timer(void *pvt)
+{
+ struct ad_options *ctx = talloc_get_type(pvt, struct ad_options);
+ struct sdap_id_ctx *sdap_ctx = ctx->id_ctx->sdap_id_ctx;
+ struct tevent_req *req;
+
+ req = sdap_dyndns_timer_conn_send(ctx, sdap_ctx->be->ev, sdap_ctx,
+ ctx->dyndns_ctx);
+ if (req == NULL) {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Out of memory\n"));
+ /* Not much we can do. Just attempt to reschedule */
+ be_nsupdate_timer_schedule(sdap_ctx->be->ev, ctx->dyndns_ctx);
+ return;
+ }
+ tevent_req_set_callback(req, ad_dyndns_timer_connected, ctx);
+}
+
+static void ad_dyndns_timer_connected(struct tevent_req *req)
+{
+ errno_t ret;
+ struct ad_options *ctx = tevent_req_callback_data(req, struct ad_options);
+
+ ret = sdap_dyndns_timer_conn_recv(req);
+ talloc_zfree(req);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_OP_FAILURE,
+ ("Failed to connect to AD: [%d](%s)\n", ret, sss_strerror(ret)));
+ return;
+ }
+
+ return ad_dyndns_update(ctx);
+}
+
+static struct tevent_req *ad_dyndns_update_send(struct ad_options *ctx);
+static errno_t ad_dyndns_update_recv(struct tevent_req *req);
+static void ad_dyndns_nsupdate_done(struct tevent_req *req);
+
+void ad_dyndns_update(void *pvt)
+{
+ struct ad_options *ctx = talloc_get_type(pvt, struct ad_options);
+ struct sdap_id_ctx *sdap_ctx = ctx->id_ctx->sdap_id_ctx;
+ struct tevent_req *req;
+
+ /* Schedule timer after provider went offline */
+ be_nsupdate_timer_schedule(sdap_ctx->be->ev, ctx->dyndns_ctx);
+
+ req = ad_dyndns_update_send(ctx);
+ if (req == NULL) {
+ DEBUG(SSSDBG_CRIT_FAILURE, ("Could not update DNS\n"));
+ return;
+ }
+ tevent_req_set_callback(req, ad_dyndns_nsupdate_done, NULL);
+}
+
+static void ad_dyndns_nsupdate_done(struct tevent_req *req)
+{
+ int ret = ad_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 ad_dyndns_update_state {
+ struct ad_options *ad_ctx;
+};
+
+static void ad_dyndns_sdap_update_done(struct tevent_req *subreq);
+
+static struct tevent_req *
+ad_dyndns_update_send(struct ad_options *ctx)
+{
+ int ret;
+ struct ad_dyndns_update_state *state;
+ struct tevent_req *req, *subreq;
+ struct sdap_id_ctx *sdap_ctx = ctx->id_ctx->sdap_id_ctx;
+ const char *servername;
+
+ DEBUG(SSSDBG_TRACE_FUNC, ("Performing update\n"));
+
+ req = tevent_req_create(ctx, &state, struct ad_dyndns_update_state);
+ if (req == NULL) {
+ return NULL;
+ }
+ state->ad_ctx = ctx;
+
+ if (ctx->dyndns_ctx->last_refresh + 60 > time(NULL) ||
+ ctx->dyndns_ctx->timer_in_progress) {
+ DEBUG(SSSDBG_FUNC_DATA, ("Last periodic update ran recently or timer"
+ "in progress, not scheduling another update\n"));
+ tevent_req_done(req);
+ tevent_req_post(req, sdap_ctx->be->ev);
+ return req;
+ }
+ state->ad_ctx->dyndns_ctx->last_refresh = time(NULL);
+
+ 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,
+ ctx->dyndns_ctx->opts,
+ sdap_ctx,
+ ctx->dyndns_ctx->auth_type,
+ dp_opt_get_string(ctx->dyndns_ctx->opts,
+ DP_OPT_DYNDNS_IFACE),
+ dp_opt_get_string(ctx->basic,
+ AD_HOSTNAME),
+ NULL,
+ dp_opt_get_string(ctx->basic,
+ AD_KRB5_REALM),
+ servername,
+ dp_opt_get_int(ctx->dyndns_ctx->opts,
+ DP_OPT_DYNDNS_TTL),
+ false);
+ 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, ad_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 ad_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 ad_dyndns_update_recv(struct tevent_req *req)
+{
+ TEVENT_REQ_RETURN_ON_ERROR(req);
+
+ return EOK;
+}
diff --git a/src/providers/ad/ad_init.c b/src/providers/ad/ad_init.c
index 4d109868..7ebe2a0e 100644
--- a/src/providers/ad/ad_init.c
+++ b/src/providers/ad/ad_init.c
@@ -36,6 +36,7 @@
#include "providers/krb5/krb5_init_shared.h"
#include "providers/ad/ad_id.h"
#include "providers/ad/ad_srv.h"
+#include "providers/dp_dyndns.h"
struct ad_options *ad_options = NULL;
@@ -166,6 +167,13 @@ sssm_ad_id_init(struct be_ctx *bectx,
if (ret != EOK) goto done;
}
+ ret = ad_dyndns_init(sdap_ctx->be, ad_options);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_MINOR_FAILURE,
+ ("Failure setting up automatic DNS update\n"));
+ /* Continue without DNS updates */
+ }
+
ret = sdap_id_setup_tasks(sdap_ctx);
if (ret != EOK) {
goto done;
diff --git a/src/providers/ad/ad_opts.h b/src/providers/ad/ad_opts.h
index c48be867..32bbe3db 100644
--- a/src/providers/ad/ad_opts.h
+++ b/src/providers/ad/ad_opts.h
@@ -238,4 +238,15 @@ struct sdap_attr_map ad_autofs_entry_map[] = {
SDAP_ATTR_MAP_TERMINATOR
};
+struct dp_option ad_dyndns_opts[] = {
+ { "dyndns_update", DP_OPT_BOOL, BOOL_FALSE, BOOL_FALSE },
+ { "dyndns_refresh_interval", DP_OPT_NUMBER, { .number = 86400 }, NULL_NUMBER },
+ { "dyndns_iface", DP_OPT_STRING, NULL_STRING, NULL_STRING },
+ { "dyndns_ttl", DP_OPT_NUMBER, { .number = 3600 }, NULL_NUMBER },
+ { "dyndns_update_ptr", DP_OPT_BOOL, BOOL_TRUE, BOOL_FALSE },
+ { "dyndns_force_tcp", DP_OPT_BOOL, BOOL_FALSE, BOOL_FALSE },
+ { "dyndns_auth", DP_OPT_STRING, { "gss-tsig" }, NULL_STRING },
+ DP_OPTION_TERMINATOR
+};
+
#endif /* AD_OPTS_H_ */
generated by cgit (git 2.34.1) at 2024-11-17 15:16:47 +0000