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[openldap] / servers / slapd / back-monitor / listener.c
1 /* listener.c - deals with listener subsystem */
2 /* $OpenLDAP$ */
3 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
4  *
5  * Copyright 2001-2017 The OpenLDAP Foundation.
6  * Portions Copyright 2001-2003 Pierangelo Masarati.
7  * All rights reserved.
8  *
9  * Redistribution and use in source and binary forms, with or without
10  * modification, are permitted only as authorized by the OpenLDAP
11  * Public License.
12  *
13  * A copy of this license is available in file LICENSE in the
14  * top-level directory of the distribution or, alternatively, at
15  * <http://www.OpenLDAP.org/license.html>.
16  */
17 /* ACKNOWLEDGEMENTS:
18  * This work was initially developed by Pierangelo Masarati for inclusion
19  * in OpenLDAP Software.
20  */
21
22 #include "portable.h"
23
24 #include <stdio.h>
25 #include <ac/string.h>
26
27 #include "slap.h"
28 #include "back-monitor.h"
29
30 int
31 monitor_subsys_listener_init(
32         BackendDB               *be,
33         monitor_subsys_t        *ms
34 )
35 {
36         monitor_info_t  *mi;
37         Entry           *e_listener, **ep;
38         int             i;
39         monitor_entry_t *mp;
40         Listener        **l;
41
42         assert( be != NULL );
43
44         if ( ( l = slapd_get_listeners() ) == NULL ) {
45                 if ( slapMode & SLAP_TOOL_MODE ) {
46                         return 0;
47                 }
48
49                 Debug( LDAP_DEBUG_ANY,
50                         "monitor_subsys_listener_init: "
51                         "unable to get listeners\n", 0, 0, 0 );
52                 return( -1 );
53         }
54
55         mi = ( monitor_info_t * )be->be_private;
56
57         if ( monitor_cache_get( mi, &ms->mss_ndn, &e_listener ) ) {
58                 Debug( LDAP_DEBUG_ANY,
59                         "monitor_subsys_listener_init: "
60                         "unable to get entry \"%s\"\n",
61                         ms->mss_ndn.bv_val, 0, 0 );
62                 return( -1 );
63         }
64
65         mp = ( monitor_entry_t * )e_listener->e_private;
66         mp->mp_children = NULL;
67         ep = &mp->mp_children;
68
69         for ( i = 0; l[ i ]; i++ ) {
70                 char            buf[ BACKMONITOR_BUFSIZE ];
71                 Entry           *e;
72                 struct berval bv;
73
74                 bv.bv_len = snprintf( buf, sizeof( buf ),
75                                 "cn=Listener %d", i );
76                 bv.bv_val = buf;
77                 e = monitor_entry_stub( &ms->mss_dn, &ms->mss_ndn, &bv,
78                         mi->mi_oc_monitoredObject, NULL, NULL );
79
80                 if ( e == NULL ) {
81                         Debug( LDAP_DEBUG_ANY,
82                                 "monitor_subsys_listener_init: "
83                                 "unable to create entry \"cn=Listener %d,%s\"\n",
84                                 i, ms->mss_ndn.bv_val, 0 );
85                         return( -1 );
86                 }
87
88                 attr_merge_normalize_one( e, mi->mi_ad_monitorConnectionLocalAddress,
89                                 &l[ i ]->sl_name, NULL );
90
91                 attr_merge_normalize_one( e, slap_schema.si_ad_labeledURI,
92                                 &l[ i ]->sl_url, NULL );
93
94 #ifdef HAVE_TLS
95                 if ( l[ i ]->sl_is_tls ) {
96                         struct berval bv;
97
98                         BER_BVSTR( &bv, "TLS" );
99                         attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
100                                         &bv, NULL );
101                 }
102 #endif /* HAVE_TLS */
103 #ifdef LDAP_CONNECTIONLESS
104                 if ( l[ i ]->sl_is_udp ) {
105                         struct berval bv;
106
107                         BER_BVSTR( &bv, "UDP" );
108                         attr_merge_normalize_one( e, mi->mi_ad_monitoredInfo,
109                                         &bv, NULL );
110                 }
111 #endif /* HAVE_TLS */
112
113                 mp = monitor_entrypriv_create();
114                 if ( mp == NULL ) {
115                         return -1;
116                 }
117                 e->e_private = ( void * )mp;
118                 mp->mp_info = ms;
119                 mp->mp_flags = ms->mss_flags
120                         | MONITOR_F_SUB;
121
122                 if ( monitor_cache_add( mi, e ) ) {
123                         Debug( LDAP_DEBUG_ANY,
124                                 "monitor_subsys_listener_init: "
125                                 "unable to add entry \"cn=Listener %d,%s\"\n",
126                                 i, ms->mss_ndn.bv_val, 0 );
127                         return( -1 );
128                 }
129
130                 *ep = e;
131                 ep = &mp->mp_next;
132         }
133         
134         monitor_cache_release( mi, e_listener );
135
136         return( 0 );
137 }
138