1 /* $NetBSD: compare.c,v 1.1.1.6 2018/02/06 01:53:17 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 2003-2017 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 1.1.1.6 2018/02/06 01:53:17 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 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