1 /* $NetBSD: compare.c,v 1.3 2021/08/14 16:14:59 christos Exp $ */
2
3 /* compare.c - ldap backend compare function */
4 /* $OpenLDAP$ */
5 /* This work is part of OpenLDAP Software <http://www.openldap.org/>.
6 *
7 * Copyright 2003-2021 The OpenLDAP Foundation.
8 * Portions Copyright 1999-2003 Howard Chu.
9 * Portions Copyright 2000-2003 Pierangelo Masarati.
10 * All rights reserved.
11 *
12 * Redistribution and use in source and binary forms, with or without
13 * modification, are permitted only as authorized by the OpenLDAP
14 * Public License.
15 *
16 * A copy of this license is available in the file LICENSE in the
17 * top-level directory of the distribution or, alternatively, at
18 * <http://www.OpenLDAP.org/license.html>.
19 */
20 /* ACKNOWLEDGEMENTS:
21 * This work was initially developed by the Howard Chu for inclusion
22 * in OpenLDAP Software and subsequently enhanced by Pierangelo
23 * Masarati.
24 */
25
26 #include <sys/cdefs.h>
27 __RCSID("$NetBSD: compare.c,v 1.3 2021/08/14 16:14:59 christos Exp $");
28
29 #include "portable.h"
30
31 #include <stdio.h>
32
33 #include <ac/string.h>
34 #include <ac/socket.h>
35
36 #include "slap.h"
37 #include "back-ldap.h"
38
39 int
ldap_back_compare(Operation * op,SlapReply * rs)40 ldap_back_compare(
41 Operation *op,
42 SlapReply *rs )
43 {
44 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private;
45
46 ldapconn_t *lc = NULL;
47 ber_int_t msgid;
48 ldap_back_send_t retrying = LDAP_BACK_RETRYING;
49 LDAPControl **ctrls = NULL;
50 int rc = LDAP_SUCCESS;
51
52 if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
53 lc = NULL;
54 goto cleanup;
55 }
56
57 retry:
58 ctrls = op->o_ctrls;
59 rc = ldap_back_controls_add( op, rs, lc, &ctrls );
60 if ( rc != LDAP_SUCCESS ) {
61 send_ldap_result( op, rs );
62 goto cleanup;
63 }
64
65 rs->sr_err = ldap_compare_ext( lc->lc_ld, op->o_req_dn.bv_val,
66 op->orc_ava->aa_desc->ad_cname.bv_val,
67 &op->orc_ava->aa_value,
68 ctrls, NULL, &msgid );
69 rc = ldap_back_op_result( lc, op, rs, msgid,
70 li->li_timeout[ SLAP_OP_COMPARE ],
71 ( LDAP_BACK_SENDRESULT | retrying ) );
72 if ( rc == LDAP_UNAVAILABLE && retrying ) {
73 retrying &= ~LDAP_BACK_RETRYING;
74 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) {
75 /* if the identity changed, there might be need to re-authz */
76 (void)ldap_back_controls_free( op, rs, &ctrls );
77 goto retry;
78 }
79 }
80
81 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex );
82 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_COMPARE ], 1 );
83 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex );
84
85 cleanup:
86 (void)ldap_back_controls_free( op, rs, &ctrls );
87
88 if ( lc != NULL ) {
89 ldap_back_release_conn( li, lc );
90 }
91
92 return rs->sr_err;
93 }
94