1 /* $NetBSD: compare.c,v 1.1.1.3 2010/12/12 15:23:09 adam Exp $ */ 2 3 /* OpenLDAP: pkg/ldap/servers/slapd/back-meta/compare.c,v 1.50.2.10 2010/04/13 20:23:30 kurt Exp */ 4 /* This work is part of OpenLDAP Software <http://www.openldap.org/>. 5 * 6 * Copyright 1999-2010 The OpenLDAP Foundation. 7 * Portions Copyright 2001-2003 Pierangelo Masarati. 8 * Portions Copyright 1999-2003 Howard Chu. 9 * All rights reserved. 10 * 11 * Redistribution and use in source and binary forms, with or without 12 * modification, are permitted only as authorized by the OpenLDAP 13 * Public License. 14 * 15 * A copy of this license is available in the file LICENSE in the 16 * top-level directory of the distribution or, alternatively, at 17 * <http://www.OpenLDAP.org/license.html>. 18 */ 19 /* ACKNOWLEDGEMENTS: 20 * This work was initially developed by the Howard Chu for inclusion 21 * in OpenLDAP Software and subsequently enhanced by Pierangelo 22 * Masarati. 23 */ 24 25 #include "portable.h" 26 27 #include <stdio.h> 28 29 #include <ac/string.h> 30 #include <ac/socket.h> 31 32 #include "slap.h" 33 #include "../back-ldap/back-ldap.h" 34 #include "back-meta.h" 35 36 int 37 meta_back_compare( Operation *op, SlapReply *rs ) 38 { 39 metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private; 40 metatarget_t *mt; 41 metaconn_t *mc; 42 int rc = 0; 43 int candidate = -1; 44 struct berval mdn = BER_BVNULL; 45 dncookie dc; 46 struct berval mapped_attr = op->orc_ava->aa_desc->ad_cname; 47 struct berval mapped_value = op->orc_ava->aa_value; 48 int msgid; 49 ldap_back_send_t retrying = LDAP_BACK_RETRYING; 50 LDAPControl **ctrls = NULL; 51 52 mc = meta_back_getconn( op, rs, &candidate, LDAP_BACK_SENDERR ); 53 if ( !mc || !meta_back_dobind( op, rs, mc, LDAP_BACK_SENDERR ) ) { 54 return rs->sr_err; 55 } 56 57 assert( mc->mc_conns[ candidate ].msc_ld != NULL ); 58 59 /* 60 * Rewrite the modify dn, if needed 61 */ 62 mt = mi->mi_targets[ candidate ]; 63 dc.target = mt; 64 dc.conn = op->o_conn; 65 dc.rs = rs; 66 dc.ctx = "compareDN"; 67 68 switch ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) { 69 case LDAP_UNWILLING_TO_PERFORM: 70 rc = 1; 71 goto cleanup; 72 73 default: 74 break; 75 } 76 77 /* 78 * if attr is objectClass, try to remap the value 79 */ 80 if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass ) { 81 ldap_back_map( &mt->mt_rwmap.rwm_oc, 82 &op->orc_ava->aa_value, 83 &mapped_value, BACKLDAP_MAP ); 84 85 if ( BER_BVISNULL( &mapped_value ) || BER_BVISEMPTY( &mapped_value ) ) { 86 goto cleanup; 87 } 88 89 /* 90 * else try to remap the attribute 91 */ 92 } else { 93 ldap_back_map( &mt->mt_rwmap.rwm_at, 94 &op->orc_ava->aa_desc->ad_cname, 95 &mapped_attr, BACKLDAP_MAP ); 96 if ( BER_BVISNULL( &mapped_attr ) || BER_BVISEMPTY( &mapped_attr ) ) { 97 goto cleanup; 98 } 99 100 if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) 101 { 102 dc.ctx = "compareAttrDN"; 103 104 switch ( ldap_back_dn_massage( &dc, &op->orc_ava->aa_value, &mapped_value ) ) 105 { 106 case LDAP_UNWILLING_TO_PERFORM: 107 rc = 1; 108 goto cleanup; 109 110 default: 111 break; 112 } 113 } 114 } 115 116 retry:; 117 ctrls = op->o_ctrls; 118 rc = meta_back_controls_add( op, rs, mc, candidate, &ctrls ); 119 if ( rc != LDAP_SUCCESS ) { 120 send_ldap_result( op, rs ); 121 goto cleanup; 122 } 123 124 rs->sr_err = ldap_compare_ext( mc->mc_conns[ candidate ].msc_ld, mdn.bv_val, 125 mapped_attr.bv_val, &mapped_value, 126 ctrls, NULL, &msgid ); 127 128 rs->sr_err = meta_back_op_result( mc, op, rs, candidate, msgid, 129 mt->mt_timeout[ SLAP_OP_COMPARE ], ( LDAP_BACK_SENDRESULT | retrying ) ); 130 if ( rs->sr_err == LDAP_UNAVAILABLE && retrying ) { 131 retrying &= ~LDAP_BACK_RETRYING; 132 if ( meta_back_retry( op, rs, &mc, candidate, LDAP_BACK_SENDERR ) ) { 133 /* if the identity changed, there might be need to re-authz */ 134 (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls ); 135 goto retry; 136 } 137 } 138 139 cleanup:; 140 (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls ); 141 142 if ( mdn.bv_val != op->o_req_dn.bv_val ) { 143 free( mdn.bv_val ); 144 } 145 146 if ( op->orc_ava->aa_value.bv_val != mapped_value.bv_val ) { 147 free( mapped_value.bv_val ); 148 } 149 150 if ( mc ) { 151 meta_back_release_conn( mi, mc ); 152 } 153 154 return rs->sr_err; 155 } 156 157