1 /* $NetBSD: compare.c,v 1.1.1.4 2014/05/28 09:58:49 tron 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 2003-2014 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 "portable.h" 27 28 #include <stdio.h> 29 30 #include <ac/string.h> 31 #include <ac/socket.h> 32 33 #include "slap.h" 34 #include "back-ldap.h" 35 36 int 37 ldap_back_compare( 38 Operation *op, 39 SlapReply *rs ) 40 { 41 ldapinfo_t *li = (ldapinfo_t *)op->o_bd->be_private; 42 43 ldapconn_t *lc = NULL; 44 ber_int_t msgid; 45 ldap_back_send_t retrying = LDAP_BACK_RETRYING; 46 LDAPControl **ctrls = NULL; 47 int rc = LDAP_SUCCESS; 48 49 if ( !ldap_back_dobind( &lc, op, rs, LDAP_BACK_SENDERR ) ) { 50 lc = NULL; 51 goto cleanup; 52 } 53 54 retry: 55 ctrls = op->o_ctrls; 56 rc = ldap_back_controls_add( op, rs, lc, &ctrls ); 57 if ( rc != LDAP_SUCCESS ) { 58 send_ldap_result( op, rs ); 59 goto cleanup; 60 } 61 62 rs->sr_err = ldap_compare_ext( lc->lc_ld, op->o_req_dn.bv_val, 63 op->orc_ava->aa_desc->ad_cname.bv_val, 64 &op->orc_ava->aa_value, 65 ctrls, NULL, &msgid ); 66 rc = ldap_back_op_result( lc, op, rs, msgid, 67 li->li_timeout[ SLAP_OP_COMPARE ], 68 ( LDAP_BACK_SENDRESULT | retrying ) ); 69 if ( rc == LDAP_UNAVAILABLE && retrying ) { 70 retrying &= ~LDAP_BACK_RETRYING; 71 if ( ldap_back_retry( &lc, op, rs, LDAP_BACK_SENDERR ) ) { 72 /* if the identity changed, there might be need to re-authz */ 73 (void)ldap_back_controls_free( op, rs, &ctrls ); 74 goto retry; 75 } 76 } 77 78 ldap_pvt_thread_mutex_lock( &li->li_counter_mutex ); 79 ldap_pvt_mp_add( li->li_ops_completed[ SLAP_OP_COMPARE ], 1 ); 80 ldap_pvt_thread_mutex_unlock( &li->li_counter_mutex ); 81 82 cleanup: 83 (void)ldap_back_controls_free( op, rs, &ctrls ); 84 85 if ( lc != NULL ) { 86 ldap_back_release_conn( li, lc ); 87 } 88 89 return rs->sr_err; 90 } 91