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, 32 insertions, 0 deletions

diff --git a/contrib/libs/openldap/include/ac/errno.h b/contrib/libs/openldap/include/ac/errno.h
new file mode 100644
index 0000000000..8a7f32c909
--- /dev/null
+++ b/contrib/libs/openldap/include/ac/errno.h
@@ -0,0 +1,32 @@
+/* Generic errno.h */
+/* $OpenLDAP$ */
+/* 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 _AC_ERRNO_H
+#define _AC_ERRNO_H
+
+#if defined( HAVE_ERRNO_H )
+# include <errno.h>
+#elif defined( HAVE_SYS_ERRNO_H )
+# include <sys/errno.h>
+#endif
+
+#if defined( HAVE_SYS_ERRLIST ) && defined( DECL_SYS_ERRLIST )
+	/* have sys_errlist but need declaration */
+	LDAP_LIBC_V(int)      sys_nerr;
+	LDAP_LIBC_V(char)    *sys_errlist[];
+#endif
+
+#endif /* _AC_ERRNO_H */