KIKIMR-18220: Enrich token with groups from LDAP

Add ldap functions wrapper and separate in different files for compatibility with different OS.

Add user groups fetching from ldap server.

Limitations:
- Fixed 'memberOf' attribute
- No tests to check how filter for search created
- Fetched groups are returned in event as is.

1 files changed, 102 insertions, 0 deletions

diff --git a/contrib/libs/openldap/include/ldap_rq.h b/contrib/libs/openldap/include/ldap_rq.h
new file mode 100644
index 0000000000..1050550ba8
--- /dev/null
+++ b/contrib/libs/openldap/include/ldap_rq.h
@@ -0,0 +1,102 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2022 The OpenLDAP Foundation.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#ifndef LDAP_RQ_H
+#define LDAP_RQ_H 1
+
+#include <ldap_cdefs.h>
+
+LDAP_BEGIN_DECL
+
+typedef struct re_s {
+	struct timeval next_sched;
+	struct timeval interval;
+	LDAP_STAILQ_ENTRY(re_s) tnext; /* it includes running */
+	LDAP_STAILQ_ENTRY(re_s) rnext;
+	ldap_pvt_thread_start_t *routine;
+	void *arg;
+	char *tname;
+	char *tspec;
+	void *pool_cookie;
+} re_t;
+
+typedef struct runqueue_s {
+	LDAP_STAILQ_HEAD(l, re_s) task_list;
+	LDAP_STAILQ_HEAD(rl, re_s) run_list;
+	ldap_pvt_thread_mutex_t	rq_mutex;
+} runqueue_t;
+
+LDAP_F( struct re_s* )
+ldap_pvt_runqueue_insert(
+	struct runqueue_s* rq,
+	time_t interval,
+	ldap_pvt_thread_start_t* routine,
+	void *arg,
+	char *tname,
+	char *tspec
+);
+
+LDAP_F( struct re_s* )
+ldap_pvt_runqueue_find(
+	struct runqueue_s* rq,
+	ldap_pvt_thread_start_t* routine,
+	void *arg
+);
+
+LDAP_F( void )
+ldap_pvt_runqueue_remove(
+	struct runqueue_s* rq,
+	struct re_s* entry
+);
+
+LDAP_F( struct re_s* )
+ldap_pvt_runqueue_next_sched(
+	struct runqueue_s* rq,
+	struct timeval* next_run
+);
+
+LDAP_F( void )
+ldap_pvt_runqueue_runtask(
+	struct runqueue_s* rq,
+	struct re_s* entry
+);
+
+LDAP_F( void )
+ldap_pvt_runqueue_stoptask(
+	struct runqueue_s* rq,
+	struct re_s* entry
+);
+
+LDAP_F( int )
+ldap_pvt_runqueue_isrunning(
+	struct runqueue_s* rq,
+	struct re_s* entry
+);
+
+LDAP_F( void )
+ldap_pvt_runqueue_resched(
+	struct runqueue_s* rq,
+	struct re_s* entry,
+	int defer
+);
+
+LDAP_F( int )
+ldap_pvt_runqueue_persistent_backload(
+	struct runqueue_s* rq
+);
+
+LDAP_END_DECL
+
+#endif