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-rw-r--r--src/providers/data_provider_be.c894
1 files changed, 894 insertions, 0 deletions
diff --git a/src/providers/data_provider_be.c b/src/providers/data_provider_be.c
new file mode 100644
index 0000000..9e961fa
--- /dev/null
+++ b/src/providers/data_provider_be.c
@@ -0,0 +1,894 @@
+/*
+ SSSD
+
+ Data Provider Process
+
+ Copyright (C) Simo Sorce <ssorce@redhat.com> 2008
+
+ 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 <stdio.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/socket.h>
+#include <sys/un.h>
+#include <string.h>
+#include <sys/time.h>
+#include <errno.h>
+#include <dlfcn.h>
+#include <popt.h>
+#include <signal.h>
+
+#include <resolv.h>
+
+#include <security/pam_appl.h>
+#include <security/pam_modules.h>
+
+#include "util/util.h"
+#include "util/sss_utf8.h"
+#include "confdb/confdb.h"
+#include "db/sysdb.h"
+#include "providers/backend.h"
+#include "providers/fail_over.h"
+#include "providers/be_refresh.h"
+#include "providers/be_ptask.h"
+#include "util/child_common.h"
+#include "util/file_watch.h"
+#include "resolv/async_resolv.h"
+#include "sss_iface/sss_iface_async.h"
+
+#define RESOLV_CONF_PATH "/etc/resolv.conf"
+
+#define ONLINE_CB_RETRY 3
+#define ONLINE_CB_RETRY_MAX_DELAY 4
+
+#define OFFLINE_TIMEOUT_RANDOM_OFFSET_DEFAULT 30
+#define OFFLINE_TIMEOUT_DEFAULT 60
+#define OFFLINE_TIMEOUT_MAX_DEFAULT 3600
+
+/* sssd.service */
+static errno_t
+data_provider_go_offline(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx);
+
+static errno_t
+data_provider_reset_offline(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx);
+
+static errno_t
+data_provider_logrotate(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx);
+
+bool be_is_offline(struct be_ctx *ctx)
+{
+ return ctx->offline;
+}
+
+static void check_if_online(struct be_ctx *be_ctx, int delay);
+
+static errno_t
+try_to_go_online(TALLOC_CTX *mem_ctx,
+ struct tevent_context *ev,
+ struct be_ctx *be_ctx,
+ struct be_ptask *be_ptask,
+ void *be_ctx_void)
+{
+ struct be_ctx *ctx = (struct be_ctx*) be_ctx_void;
+
+ check_if_online(ctx, 0);
+ return EOK;
+}
+
+static int get_offline_timeout(struct be_ctx *ctx)
+{
+ errno_t ret;
+ int offline_timeout;
+
+ ret = confdb_get_int(ctx->cdb, ctx->conf_path,
+ CONFDB_DOMAIN_OFFLINE_TIMEOUT,
+ OFFLINE_TIMEOUT_DEFAULT,
+ &offline_timeout);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ "Failed to get offline_timeout from confdb. "
+ "Will use %d seconds.\n", OFFLINE_TIMEOUT_DEFAULT);
+ offline_timeout = OFFLINE_TIMEOUT_DEFAULT;
+ }
+
+ return offline_timeout;
+}
+
+static int get_offline_timeout_max(struct be_ctx *ctx)
+{
+ int offline_timeout_max;
+ errno_t ret;
+
+ ret = confdb_get_int(ctx->cdb, ctx->conf_path,
+ CONFDB_DOMAIN_OFFLINE_TIMEOUT_MAX,
+ OFFLINE_TIMEOUT_MAX_DEFAULT,
+ &offline_timeout_max);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CONF_SETTINGS,
+ "Failed to get offline_timeout_max from confdb. "
+ "Will use %d seconds.\n", OFFLINE_TIMEOUT_MAX_DEFAULT);
+ offline_timeout_max = OFFLINE_TIMEOUT_MAX_DEFAULT;
+ }
+
+ return offline_timeout_max;
+}
+
+static int get_offline_timeout_random_offset(struct be_ctx *ctx)
+{
+ int offline_timeout_random_offset;
+ errno_t ret;
+
+ ret = confdb_get_int(ctx->cdb, ctx->conf_path,
+ CONFDB_DOMAIN_OFFLINE_TIMEOUT_RANDOM_OFFSET,
+ OFFLINE_TIMEOUT_RANDOM_OFFSET_DEFAULT,
+ &offline_timeout_random_offset);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CONF_SETTINGS,
+ "Failed to get refresh_max_random_offset from confdb. "
+ "Will use %d seconds.\n", OFFLINE_TIMEOUT_RANDOM_OFFSET_DEFAULT);
+ offline_timeout_random_offset = OFFLINE_TIMEOUT_RANDOM_OFFSET_DEFAULT;
+ }
+
+ return offline_timeout_random_offset;
+}
+
+void be_mark_offline(struct be_ctx *ctx)
+{
+ int offline_timeout;
+ int offline_timeout_max;
+ int offline_timeout_random_offset;
+ errno_t ret;
+
+ DEBUG(SSSDBG_TRACE_INTERNAL, "Going offline!\n");
+
+ ctx->offline = true;
+ ctx->run_online_cb = true;
+
+ if (ctx->check_if_online_ptask == NULL) {
+ /* This is the first time we go offline - create a periodic task
+ * to check if we can switch to online. */
+ DEBUG(SSSDBG_TRACE_INTERNAL, "Initialize check_if_online_ptask.\n");
+
+ offline_timeout = get_offline_timeout(ctx);
+ offline_timeout_max = get_offline_timeout_max(ctx);
+ offline_timeout_random_offset = get_offline_timeout_random_offset(ctx);
+
+ ret = be_ptask_create_sync(ctx,
+ ctx,
+ offline_timeout,
+ offline_timeout,
+ offline_timeout,
+ offline_timeout_random_offset,
+ offline_timeout,
+ offline_timeout_max,
+ try_to_go_online,
+ ctx, "Check if online (periodic)",
+ BE_PTASK_OFFLINE_EXECUTE,
+ &ctx->check_if_online_ptask);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE,
+ "be_ptask_create_sync failed [%d]: %s\n",
+ ret, sss_strerror(ret));
+ }
+ } else {
+ /* Periodic task was already created. Just enable it. */
+ DEBUG(SSSDBG_TRACE_INTERNAL, "Enable check_if_online_ptask.\n");
+ be_ptask_enable(ctx->check_if_online_ptask);
+ }
+
+ be_run_offline_cb(ctx);
+}
+
+static void be_subdom_reset_status(struct tevent_context *ev,
+ struct tevent_timer *te,
+ struct timeval current_time,
+ void *pvt)
+{
+ struct sss_domain_info *subdom = talloc_get_type(pvt,
+ struct sss_domain_info);
+
+ DEBUG(SSSDBG_TRACE_LIBS, "Resetting subdomain %s\n", subdom->name);
+ subdom->state = DOM_ACTIVE;
+}
+
+static void be_mark_subdom_offline(struct sss_domain_info *subdom,
+ struct be_ctx *be_ctx)
+{
+ struct timeval tv;
+ struct tevent_timer *timeout = NULL;
+ int reset_status_timeout;
+
+ reset_status_timeout = get_offline_timeout(be_ctx);
+ tv = tevent_timeval_current_ofs(reset_status_timeout, 0);
+
+ switch (subdom->state) {
+ case DOM_INCONSISTENT:
+ case DOM_DISABLED:
+ DEBUG(SSSDBG_MINOR_FAILURE,
+ "Won't touch disabled or inconsistent subdomain\n");
+ return;
+ case DOM_INACTIVE:
+ DEBUG(SSSDBG_TRACE_ALL, "Subdomain already inactive\n");
+ return;
+ case DOM_ACTIVE:
+ DEBUG(SSSDBG_TRACE_LIBS,
+ "Marking subdomain %s as inactive\n", subdom->name);
+ break;
+ }
+
+ timeout = tevent_add_timer(be_ctx->ev, be_ctx, tv,
+ be_subdom_reset_status, subdom);
+ if (timeout == NULL) {
+ DEBUG(SSSDBG_OP_FAILURE, "Cannot create timer\n");
+ return;
+ }
+
+ subdom->state = DOM_INACTIVE;
+}
+
+void be_mark_dom_offline(struct sss_domain_info *dom, struct be_ctx *ctx)
+{
+ if (IS_SUBDOMAIN(dom) == false) {
+ DEBUG(SSSDBG_TRACE_LIBS, "Marking back end offline\n");
+ be_mark_offline(ctx);
+ } else {
+ DEBUG(SSSDBG_TRACE_LIBS, "Marking subdomain %s offline\n", dom->name);
+ be_mark_subdom_offline(dom, ctx);
+ }
+}
+
+static void reactivate_subdoms(struct sss_domain_info *head)
+{
+ struct sss_domain_info *dom;
+
+ DEBUG(SSSDBG_TRACE_LIBS, "Resetting all subdomains\n");
+
+ for (dom = head; dom; dom = get_next_domain(dom, true)) {
+ if (sss_domain_get_state(dom) == DOM_INACTIVE) {
+ sss_domain_set_state(dom, DOM_ACTIVE);
+ }
+ }
+}
+
+static void be_reset_offline(struct be_ctx *ctx)
+{
+ ctx->offline = false;
+ ctx->run_offline_cb = true;
+
+ reactivate_subdoms(ctx->domain);
+
+ be_ptask_disable(ctx->check_if_online_ptask);
+ be_run_online_cb(ctx);
+}
+
+static void be_check_online_done(struct tevent_req *req);
+
+static errno_t be_check_online_request(struct be_ctx *be_ctx)
+{
+ struct tevent_req *req;
+
+ reset_fo(be_ctx);
+
+ req = dp_req_send(be_ctx, be_ctx->provider, NULL, "Online Check",
+ 0, NULL, DPT_ID, DPM_CHECK_ONLINE, 0, NULL, NULL);
+ if (req == NULL) {
+ return ENOMEM;
+ }
+
+ tevent_req_set_callback(req, be_check_online_done, be_ctx);
+
+ return EOK;
+}
+
+static void check_if_online_delayed(struct tevent_context *ev,
+ struct tevent_timer *tim,
+ struct timeval current_time,
+ void *private_data)
+{
+ errno_t ret;
+ struct be_ctx *be_ctx = talloc_get_type(private_data, struct be_ctx);
+
+ be_run_unconditional_online_cb(be_ctx);
+
+ if (!be_is_offline(be_ctx)) {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "Backend is already online, nothing to do.\n");
+ be_ctx->check_online_ref_count = 0;
+ return;
+ }
+
+ DEBUG(SSSDBG_TRACE_INTERNAL, "Trying to go back online!\n");
+
+ ret = be_check_online_request(be_ctx);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_CRIT_FAILURE, "Unable to create check online req.\n");
+ } else {
+ DEBUG(SSSDBG_TRACE_INTERNAL, "Check online req created.\n");
+ }
+}
+
+static void be_check_online_done(struct tevent_req *req)
+{
+ struct be_ctx *be_ctx;
+ struct dp_reply_std *reply;
+ struct tevent_timer *time_event;
+ struct timeval schedule;
+ errno_t ret;
+
+ be_ctx = tevent_req_callback_data(req, struct be_ctx);
+
+ ret = dp_req_recv_ptr(be_ctx, req, struct dp_reply_std, &reply);
+ talloc_zfree(req);
+ if (ret != EOK) {
+ reply = NULL;
+ goto done;
+ }
+
+ switch (reply->dp_error) {
+ case DP_ERR_OK:
+ if (be_ctx->last_dp_state != DP_ERR_OK) {
+ be_ctx->last_dp_state = DP_ERR_OK;
+ sss_log(SSS_LOG_INFO, "Backend is online\n");
+ }
+ DEBUG(SSSDBG_TRACE_FUNC, "Backend is online\n");
+ break;
+ case DP_ERR_OFFLINE:
+ if (be_ctx->last_dp_state != DP_ERR_OFFLINE) {
+ be_ctx->last_dp_state = DP_ERR_OFFLINE;
+ sss_log(SSS_LOG_INFO, "Backend is offline\n");
+ }
+ DEBUG(SSSDBG_TRACE_FUNC, "Backend is offline\n");
+ break;
+ default:
+ DEBUG(SSSDBG_TRACE_FUNC, "Error during online check [%d]: %s\n",
+ ret, sss_strerror(ret));
+ break;
+ }
+
+ be_ctx->check_online_ref_count--;
+
+ if (reply->dp_error != DP_ERR_OK && be_ctx->check_online_ref_count > 0) {
+ be_ctx->check_online_retry_delay *= 2;
+ if (be_ctx->check_online_retry_delay > ONLINE_CB_RETRY_MAX_DELAY) {
+ be_ctx->check_online_retry_delay = ONLINE_CB_RETRY_MAX_DELAY;
+ }
+
+ schedule = tevent_timeval_current_ofs(be_ctx->check_online_retry_delay,
+ 0);
+ time_event = tevent_add_timer(be_ctx->ev, be_ctx, schedule,
+ check_if_online_delayed, be_ctx);
+
+ if (time_event == NULL) {
+ DEBUG(SSSDBG_OP_FAILURE, "Failed to schedule online check\n");
+ goto done;
+ }
+
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "Schedule check_if_online_delayed in %ds.\n",
+ be_ctx->check_online_retry_delay);
+ return;
+ }
+
+done:
+ be_ctx->check_online_ref_count = 0;
+ if (reply && reply->dp_error != DP_ERR_OFFLINE) {
+ if (reply->dp_error != DP_ERR_OK) {
+ reset_fo(be_ctx);
+ }
+ be_reset_offline(be_ctx);
+ }
+}
+
+static void check_if_online(struct be_ctx *be_ctx, int delay)
+{
+ struct tevent_timer *time_event;
+ struct timeval schedule;
+
+ be_ctx->check_online_ref_count++;
+
+ if (be_ctx->check_online_ref_count != 1) {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "There is an online check already running.\n");
+ /* Do not have more than ONLINE_CB_RETRY retries in the queue */
+ if (be_ctx->check_online_ref_count > ONLINE_CB_RETRY) {
+ be_ctx->check_online_ref_count--;
+ }
+ return;
+ }
+
+ if (!dp_method_enabled(be_ctx->provider, DPT_ID, DPM_CHECK_ONLINE)) {
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "ID providers does not provide a check_online method.\n");
+ goto failed;
+ }
+
+ schedule = tevent_timeval_current_ofs(delay, 0);
+ time_event = tevent_add_timer(be_ctx->ev, be_ctx, schedule,
+ check_if_online_delayed, be_ctx);
+
+ if (time_event == NULL) {
+ DEBUG(SSSDBG_CRIT_FAILURE,
+ "Scheduling check_if_online_delayed failed.\n");
+ goto failed;
+ }
+
+ be_ctx->check_online_ref_count = ONLINE_CB_RETRY;
+ be_ctx->check_online_retry_delay = 1;
+ DEBUG(SSSDBG_TRACE_INTERNAL,
+ "Schedule check_if_online_delayed in %ds.\n", delay);
+ return;
+
+failed:
+ be_ctx->check_online_ref_count--;
+
+ if (be_ctx->check_online_ref_count == 0) {
+ reset_fo(be_ctx);
+ be_reset_offline(be_ctx);
+ }
+
+ return;
+}
+
+static void signal_be_offline(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ struct be_ctx *ctx = talloc_get_type(private_data, struct be_ctx);
+ be_mark_offline(ctx);
+}
+
+static void signal_be_reset_offline(struct tevent_context *ev,
+ struct tevent_signal *se,
+ int signum,
+ int count,
+ void *siginfo,
+ void *private_data)
+{
+ struct be_ctx *ctx = talloc_get_type(private_data, struct be_ctx);
+ check_if_online(ctx, 0);
+}
+
+static errno_t
+be_register_monitor_iface(struct sbus_connection *conn, struct be_ctx *be_ctx)
+{
+ SBUS_INTERFACE(iface_service,
+ sssd_service,
+ SBUS_METHODS(
+ SBUS_SYNC(METHOD, sssd_service, goOffline, data_provider_go_offline, be_ctx),
+ SBUS_SYNC(METHOD, sssd_service, resetOffline, data_provider_reset_offline, be_ctx),
+ SBUS_SYNC(METHOD, sssd_service, rotateLogs, data_provider_logrotate, be_ctx)
+ ),
+ SBUS_SIGNALS(SBUS_NO_SIGNALS),
+ SBUS_PROPERTIES(
+ SBUS_SYNC(GETTER, sssd_service, debug_level, generic_get_debug_level, NULL),
+ SBUS_SYNC(SETTER, sssd_service, debug_level, generic_set_debug_level, NULL)
+ )
+ );
+
+ struct sbus_path paths[] = {
+ {SSS_BUS_PATH, &iface_service},
+ {NULL, NULL}
+ };
+
+ return sbus_connection_add_path_map(be_ctx->mon_conn, paths);
+}
+
+static void dp_initialized(struct tevent_req *req);
+
+errno_t be_process_init(TALLOC_CTX *mem_ctx,
+ const char *be_domain,
+ uid_t uid,
+ gid_t gid,
+ struct tevent_context *ev,
+ struct confdb_ctx *cdb)
+{
+ struct tevent_req *req;
+ struct be_ctx *be_ctx;
+ char *str = NULL;
+ errno_t ret;
+
+ be_ctx = talloc_zero(mem_ctx, struct be_ctx);
+ if (be_ctx == NULL) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "talloc_zero() failed\n");
+ return ENOMEM;
+ }
+
+ be_ctx->ev = ev;
+ be_ctx->cdb = cdb;
+ be_ctx->uid = uid;
+ be_ctx->gid = gid;
+ be_ctx->identity = talloc_asprintf(be_ctx, "%%BE_%s", be_domain);
+ be_ctx->conf_path = talloc_asprintf(be_ctx, CONFDB_DOMAIN_PATH_TMPL, be_domain);
+ if (be_ctx->identity == NULL || be_ctx->conf_path == NULL) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Out of memory!?\n");
+ ret = ENOMEM;
+ goto done;
+ }
+ be_ctx->last_dp_state = -1;
+
+ ret = be_init_failover(be_ctx);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize failover\n");
+ goto done;
+ }
+
+ ret = sssd_domain_init(be_ctx, cdb, be_domain, DB_PATH, &be_ctx->domain);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize domain\n");
+ goto done;
+ }
+
+ ret = sysdb_master_domain_update(be_ctx->domain);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to update master domain information!\n");
+ goto done;
+ }
+
+ /* We need this for subdomains support, as they have to store fully
+ * qualified user and group names for now. */
+ ret = sss_names_init(be_ctx->domain, cdb, be_ctx->domain->name,
+ &be_ctx->domain->names);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to setup fully qualified name "
+ "format for %s\n", be_ctx->domain->name);
+ goto done;
+ }
+
+ /* Read the global override_space option, for output name formatting */
+ ret = confdb_get_string(cdb, be_ctx, CONFDB_MONITOR_CONF_ENTRY,
+ CONFDB_MONITOR_OVERRIDE_SPACE, NULL,
+ &str);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_OP_FAILURE,
+ "Cannot get the space substitution character [%d]: %s\n",
+ ret, strerror(ret));
+ goto done;
+ }
+
+ if (str != NULL) {
+ if (strlen(str) > 1) {
+ DEBUG(SSSDBG_MINOR_FAILURE, "Option %s is longer than 1 character "
+ "only the first character %c will be used\n",
+ CONFDB_MONITOR_OVERRIDE_SPACE, str[0]);
+ }
+
+ be_ctx->override_space = str[0];
+ }
+
+ /* Read session_recording section */
+ ret = session_recording_conf_load(be_ctx, cdb, &be_ctx->sr_conf);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE,
+ "Failed loading session recording configuration: %s\n",
+ strerror(ret));
+ goto done;
+ }
+
+ be_ctx->sbus_name = sss_iface_domain_bus(be_ctx, be_ctx->domain);
+ if (be_ctx->sbus_name == NULL) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Could not get sbus backend name.\n");
+ ret = ENOMEM;
+ goto done;
+ }
+
+ req = dp_init_send(be_ctx, be_ctx->ev, be_ctx, be_ctx->uid, be_ctx->gid,
+ be_ctx->sbus_name);
+ if (req == NULL) {
+ ret = ENOMEM;
+ goto done;
+ }
+
+ tevent_req_set_callback(req, dp_initialized, be_ctx);
+
+ ret = EOK;
+
+done:
+ if (ret != EOK) {
+ talloc_free(be_ctx);
+ }
+
+ return ret;
+}
+
+static void watch_update_resolv(const char *filename, void *arg)
+{
+ int ret;
+ struct be_ctx *be_ctx = (struct be_ctx *) arg;
+
+ DEBUG(SSSDBG_TRACE_FUNC, "Reloading %s.\n", filename);
+ resolv_reread_configuration(be_ctx->be_res->resolv);
+ ret = res_init();
+ if (ret != 0) {
+ DEBUG(SSSDBG_OP_FAILURE, "Failed to reload %s.\n", filename);
+ return;
+ }
+ check_if_online(be_ctx, 1);
+}
+
+static int watch_config_files(struct be_ctx *ctx)
+{
+ int ret;
+ bool monitor_resolv_conf;
+ bool use_inotify;
+
+ /* Watch for changes to the DNS resolv.conf */
+ ret = confdb_get_bool(ctx->cdb,
+ CONFDB_MONITOR_CONF_ENTRY,
+ CONFDB_MONITOR_RESOLV_CONF,
+ true, &monitor_resolv_conf);
+ if (ret != EOK) {
+ return ret;
+ }
+
+ ret = confdb_get_bool(ctx->cdb,
+ CONFDB_MONITOR_CONF_ENTRY,
+ CONFDB_MONITOR_TRY_INOTIFY,
+ true, &use_inotify);
+ if (ret != EOK) {
+ return ret;
+ }
+
+ if (monitor_resolv_conf) {
+ ctx->file_ctx = fw_watch_file(ctx, ctx->ev, RESOLV_CONF_PATH,
+ use_inotify, watch_update_resolv, ctx);
+ if (ctx->file_ctx == NULL) {
+ return ENOMEM;
+ }
+
+ } else {
+ DEBUG(SSS_LOG_NOTICE, "%s watching is disabled\n", RESOLV_CONF_PATH);
+ }
+
+ return EOK;
+}
+
+static void fix_child_log_permissions(uid_t uid, gid_t gid)
+{
+ int ret;
+ const char *child_names[] = { "krb5_child",
+ "ldap_child",
+ "selinux_child",
+ "ad_gpo_child",
+ "proxy_child",
+ NULL };
+ size_t c;
+
+ for (c = 0; child_names[c] != NULL; c++) {
+ ret = chown_debug_file(child_names[c], uid, gid);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_MINOR_FAILURE,
+ "Cannot chown the [%s] debug file, "
+ "debugging might not work!\n", child_names[c]);
+ }
+ }
+}
+
+static void dp_initialized(struct tevent_req *req)
+{
+ struct tevent_signal *tes;
+ struct be_ctx *be_ctx;
+ errno_t ret;
+
+ be_ctx = tevent_req_callback_data(req, struct be_ctx);
+
+ ret = dp_init_recv(be_ctx, req);
+ talloc_zfree(req);
+ if (ret != EOK) {
+ goto done;
+ }
+
+ ret = sss_monitor_service_init(be_ctx, be_ctx->ev, be_ctx->sbus_name,
+ be_ctx->identity, DATA_PROVIDER_VERSION,
+ MT_SVC_PROVIDER, NULL, &be_ctx->mon_conn);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to initialize monitor connection\n");
+ goto done;
+ }
+
+ ret = be_register_monitor_iface(be_ctx->mon_conn, be_ctx);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to register monitor interface "
+ "[%d]: %s\n", ret, sss_strerror(ret));
+ goto done;
+ }
+
+ /* Handle SIGUSR1 to force offline behavior */
+ BlockSignals(false, SIGUSR1);
+ tes = tevent_add_signal(be_ctx->ev, be_ctx, SIGUSR1, 0,
+ signal_be_offline, be_ctx);
+ if (tes == NULL) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to setup SIGUSR1 handler\n");
+ ret = EIO;
+ goto done;
+ }
+
+ /* Handle SIGUSR2 to force going online */
+ BlockSignals(false, SIGUSR2);
+ tes = tevent_add_signal(be_ctx->ev, be_ctx, SIGUSR2, 0,
+ signal_be_reset_offline, be_ctx);
+ if (tes == NULL) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Unable to setup SIGUSR2 handler\n");
+ ret = EIO;
+ goto done;
+ }
+
+ ret = chown_debug_file(NULL, be_ctx->uid, be_ctx->gid);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_MINOR_FAILURE,
+ "Cannot chown the debug files, debugging might not work!\n");
+ }
+
+ fix_child_log_permissions(be_ctx->uid, be_ctx->gid);
+
+ /* Set up watchers for system config files */
+ ret = watch_config_files(be_ctx);
+ if (ret != EOK) {
+ goto done;
+ }
+
+ ret = become_user(be_ctx->uid, be_ctx->gid);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FUNC_DATA,
+ "Cannot become user [%"SPRIuid"][%"SPRIgid"].\n",
+ be_ctx->uid, be_ctx->gid);
+ goto done;
+ }
+
+ DEBUG(SSSDBG_TRACE_FUNC, "Backend provider (%s) started!\n",
+ be_ctx->domain->name);
+
+ ret = EOK;
+
+done:
+ if (ret != EOK) {
+ exit(3);
+ }
+}
+
+#ifndef UNIT_TESTING
+int main(int argc, const char *argv[])
+{
+ int opt;
+ poptContext pc;
+ char *opt_logger = NULL;
+ char *be_domain = NULL;
+ char *srv_name = NULL;
+ struct main_context *main_ctx;
+ char *confdb_path;
+ int ret;
+ uid_t uid = 0;
+ gid_t gid = 0;
+
+ struct poptOption long_options[] = {
+ POPT_AUTOHELP
+ SSSD_MAIN_OPTS
+ SSSD_LOGGER_OPTS
+ SSSD_SERVER_OPTS(uid, gid)
+ {"domain", 0, POPT_ARG_STRING, &be_domain, 0,
+ _("Domain of the information provider (mandatory)"), NULL },
+ POPT_TABLEEND
+ };
+
+ /* Set debug level to invalid value so we can decide if -d 0 was used. */
+ debug_level = SSSDBG_INVALID;
+
+ pc = poptGetContext(argv[0], argc, argv, long_options, 0);
+ while((opt = poptGetNextOpt(pc)) != -1) {
+ switch(opt) {
+ default:
+ fprintf(stderr, "\nInvalid option %s: %s\n\n",
+ poptBadOption(pc, 0), poptStrerror(opt));
+ poptPrintUsage(pc, stderr, 0);
+ return 1;
+ }
+ }
+
+ if (be_domain == NULL) {
+ fprintf(stderr, "\nMissing option, --domain is a mandatory option.\n\n");
+ poptPrintUsage(pc, stderr, 0);
+ return 1;
+ }
+ if (!is_valid_domain_name(be_domain)) {
+ fprintf(stderr, "\nInvalid --domain option.\n\n");
+ return 1;
+ }
+
+ poptFreeContext(pc);
+
+ /* set up things like debug, signals, daemonization, etc. */
+ debug_log_file = talloc_asprintf(NULL, "sssd_%s", be_domain);
+ if (!debug_log_file) return 2;
+ DEBUG_INIT(debug_level, opt_logger);
+
+ srv_name = talloc_asprintf(NULL, "be[%s]", be_domain);
+ if (!srv_name) return 2;
+
+ confdb_path = talloc_asprintf(NULL, CONFDB_DOMAIN_PATH_TMPL, be_domain);
+ if (!confdb_path) return 2;
+
+ ret = server_setup(srv_name, false, 0, 0, 0, confdb_path, &main_ctx, false);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Could not set up mainloop [%d]\n", ret);
+ return 2;
+ }
+
+ ret = setenv(SSS_DOM_ENV, be_domain, 1);
+ if (ret != 0) {
+ DEBUG(SSSDBG_MINOR_FAILURE, "Setting "SSS_DOM_ENV" failed, journald "
+ "logging might not work as expected\n");
+ }
+
+ ret = die_if_parent_died();
+ if (ret != EOK) {
+ /* This is not fatal, don't return */
+ DEBUG(SSSDBG_OP_FAILURE,
+ "Could not set up to exit when parent process does\n");
+ }
+
+ ret = be_process_init(main_ctx,
+ be_domain, uid, gid,
+ main_ctx->event_ctx,
+ main_ctx->confdb_ctx);
+ if (ret != EOK) {
+ DEBUG(SSSDBG_FATAL_FAILURE, "Could not initialize backend [%d]\n", ret);
+ return 3;
+ }
+
+ /* loop on main */
+ server_loop(main_ctx);
+
+ return 0;
+}
+#endif
+
+static errno_t
+data_provider_go_offline(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx)
+{
+ be_mark_offline(be_ctx);
+
+ return EOK;
+}
+
+static errno_t
+data_provider_reset_offline(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx)
+{
+ check_if_online(be_ctx, 1);
+
+ return EOK;
+}
+
+static errno_t
+data_provider_logrotate(TALLOC_CTX *mem_ctx,
+ struct sbus_request *sbus_req,
+ struct be_ctx *be_ctx)
+{
+ return server_common_rotate_logs(be_ctx->cdb, be_ctx->conf_path);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2025-01-26 15:07:35 +0000