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      1 /*	$NetBSD: overlay.c,v 1.4 2025/09/05 21:16:28 christos Exp $	*/
      2 
      3 /* overlay.c - deals with overlay subsystem */
      4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
      5  *
      6  * Copyright 2001-2024 The OpenLDAP Foundation.
      7  * Portions Copyright 2001-2003 Pierangelo Masarati.
      8  * All rights reserved.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted only as authorized by the OpenLDAP
     12  * Public License.
     13  *
     14  * A copy of this license is available in file LICENSE in the
     15  * top-level directory of the distribution or, alternatively, at
     16  * <http://www.OpenLDAP.org/license.html>.
     17  */
     18 /* ACKNOWLEDGEMENTS:
     19  * This work was initially developed by Pierangelo Masarati for inclusion
     20  * in OpenLDAP Software.
     21  */
     22 
     23 
     24 #include <sys/cdefs.h>
     25 __RCSID("$NetBSD: overlay.c,v 1.4 2025/09/05 21:16:28 christos Exp $");
     26 
     27 #include "portable.h"
     28 
     29 #include <stdio.h>
     30 #include <ac/string.h>
     31 
     32 #include "slap.h"
     33 #include "back-monitor.h"
     34 
     35 /*
     36  * initializes overlay subentries
     37  */
     38 int
     39 monitor_subsys_overlay_init(
     40 	BackendDB		*be,
     41 	monitor_subsys_t	*ms
     42 )
     43 {
     44 	monitor_info_t		*mi;
     45 	Entry			*e_overlay;
     46 	int			i;
     47 	monitor_entry_t		*mp;
     48 	slap_overinst		*on;
     49 	monitor_subsys_t	*ms_database;
     50 
     51 	mi = ( monitor_info_t * )be->be_private;
     52 
     53 	ms_database = monitor_back_get_subsys( SLAPD_MONITOR_DATABASE_NAME );
     54 	if ( ms_database == NULL ) {
     55 		Debug( LDAP_DEBUG_ANY,
     56 			"monitor_subsys_backend_init: "
     57 			"unable to get "
     58 			"\"" SLAPD_MONITOR_DATABASE_NAME "\" "
     59 			"subsystem\n" );
     60 		return -1;
     61 	}
     62 
     63 	if ( monitor_cache_get( mi, &ms->mss_ndn, &e_overlay ) ) {
     64 		Debug( LDAP_DEBUG_ANY,
     65 			"monitor_subsys_overlay_init: "
     66 			"unable to get entry \"%s\"\n",
     67 			ms->mss_ndn.bv_val );
     68 		return( -1 );
     69 	}
     70 
     71 	for ( on = overlay_next( NULL ), i = 0; on; on = overlay_next( on ), i++ ) {
     72 		char 		buf[ BACKMONITOR_BUFSIZE ];
     73 		struct berval 	bv;
     74 		int		j;
     75 		Entry		*e;
     76 		BackendDB	*be;
     77 
     78 		bv.bv_len = snprintf( buf, sizeof( buf ), "cn=Overlay %d", i );
     79 		bv.bv_val = buf;
     80 		e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
     81 			mi->mi_oc_monitoredObject, NULL, NULL );
     82 		if ( e == NULL ) {
     83 			Debug( LDAP_DEBUG_ANY,
     84 				"monitor_subsys_overlay_init: "
     85 				"unable to create entry \"cn=Overlay %d,%s\"\n",
     86 				i, ms->mss_ndn.bv_val );
     87 			return( -1 );
     88 		}
     89 		ber_str2bv( on->on_bi.bi_type, 0, 0, &bv );
     90 		attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo, &bv, NULL );
     91 		attr_merge_normalize_one( e, mi->mi_ad_monitorRuntimeConfig,
     92 			on->on_bi.bi_cf_ocs ? (struct berval *)&slap_true_bv :
     93 				(struct berval *)&slap_false_bv, NULL );
     94 
     95 		attr_merge_normalize_one( e_overlay, mi->mi_ad_monitoredInfo,
     96 				&bv, NULL );
     97 
     98 		j = -1;
     99 		LDAP_STAILQ_FOREACH( be, &backendDB, be_next ) {
    100 			char		buf[ SLAP_LDAPDN_MAXLEN ];
    101 			struct berval	dn;
    102 
    103 			j++;
    104 			if ( !overlay_is_inst( be, on->on_bi.bi_type ) ) {
    105 				continue;
    106 			}
    107 
    108 			snprintf( buf, sizeof( buf ), "cn=Database %d,%s",
    109 					j, ms_database->mss_dn.bv_val );
    110 
    111 			ber_str2bv( buf, 0, 0, &dn );
    112 			attr_merge_normalize_one( e, slap_schema.si_ad_seeAlso,
    113 					&dn, NULL );
    114 		}
    115 
    116 		mp = monitor_entrypriv_create();
    117 		if ( mp == NULL ) {
    118 			return -1;
    119 		}
    120 		e->e_private = ( void * )mp;
    121 		mp->mp_info = ms;
    122 		mp->mp_flags = ms->mss_flags
    123 			| MONITOR_F_SUB;
    124 
    125 		if ( monitor_cache_add( mi, e, e_overlay ) ) {
    126 			Debug( LDAP_DEBUG_ANY,
    127 				"monitor_subsys_overlay_init: "
    128 				"unable to add entry \"cn=Overlay %d,%s\"\n",
    129 				i, ms->mss_ndn.bv_val );
    130 			return( -1 );
    131 		}
    132 	}
    133 
    134 	monitor_cache_release( mi, e_overlay );
    135 
    136 	return( 0 );
    137 }
    138 
    139