/* $NetBSD: compare.c,v 1.1.1.6.6.1 2019/08/10 06:17:18 martin Exp $ */ /* $OpenLDAP$ */ /* This work is part of OpenLDAP Software . * * Copyright 1999-2019 The OpenLDAP Foundation. * Portions Copyright 2001-2003 Pierangelo Masarati. * Portions Copyright 1999-2003 Howard Chu. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted only as authorized by the OpenLDAP * Public License. * * A copy of this license is available in the file LICENSE in the * top-level directory of the distribution or, alternatively, at * . */ /* ACKNOWLEDGEMENTS: * This work was initially developed by the Howard Chu for inclusion * in OpenLDAP Software and subsequently enhanced by Pierangelo * Masarati. */ #include __RCSID("$NetBSD: compare.c,v 1.1.1.6.6.1 2019/08/10 06:17:18 martin Exp $"); #include "portable.h" #include #include #include #include "slap.h" #include "../back-ldap/back-ldap.h" #include "back-meta.h" int meta_back_compare( Operation *op, SlapReply *rs ) { metainfo_t *mi = ( metainfo_t * )op->o_bd->be_private; metatarget_t *mt; metaconn_t *mc; int rc = 0; int candidate = -1; struct berval mdn = BER_BVNULL; dncookie dc; struct berval mapped_attr = op->orc_ava->aa_desc->ad_cname; struct berval mapped_value = op->orc_ava->aa_value; int msgid; ldap_back_send_t retrying = LDAP_BACK_RETRYING; LDAPControl **ctrls = NULL; mc = meta_back_getconn( op, rs, &candidate, LDAP_BACK_SENDERR ); if ( !mc || !meta_back_dobind( op, rs, mc, LDAP_BACK_SENDERR ) ) { return rs->sr_err; } assert( mc->mc_conns[ candidate ].msc_ld != NULL ); /* * Rewrite the modify dn, if needed */ mt = mi->mi_targets[ candidate ]; dc.target = mt; dc.conn = op->o_conn; dc.rs = rs; dc.ctx = "compareDN"; switch ( ldap_back_dn_massage( &dc, &op->o_req_dn, &mdn ) ) { case LDAP_UNWILLING_TO_PERFORM: rc = 1; goto cleanup; default: break; } /* * if attr is objectClass, try to remap the value */ if ( op->orc_ava->aa_desc == slap_schema.si_ad_objectClass ) { ldap_back_map( &mt->mt_rwmap.rwm_oc, &op->orc_ava->aa_value, &mapped_value, BACKLDAP_MAP ); if ( BER_BVISNULL( &mapped_value ) || BER_BVISEMPTY( &mapped_value ) ) { goto cleanup; } /* * else try to remap the attribute */ } else { ldap_back_map( &mt->mt_rwmap.rwm_at, &op->orc_ava->aa_desc->ad_cname, &mapped_attr, BACKLDAP_MAP ); if ( BER_BVISNULL( &mapped_attr ) || BER_BVISEMPTY( &mapped_attr ) ) { goto cleanup; } if ( op->orc_ava->aa_desc->ad_type->sat_syntax == slap_schema.si_syn_distinguishedName ) { dc.ctx = "compareAttrDN"; switch ( ldap_back_dn_massage( &dc, &op->orc_ava->aa_value, &mapped_value ) ) { case LDAP_UNWILLING_TO_PERFORM: rc = 1; goto cleanup; default: break; } } } retry:; ctrls = op->o_ctrls; rc = meta_back_controls_add( op, rs, mc, candidate, &ctrls ); if ( rc != LDAP_SUCCESS ) { send_ldap_result( op, rs ); goto cleanup; } rs->sr_err = ldap_compare_ext( mc->mc_conns[ candidate ].msc_ld, mdn.bv_val, mapped_attr.bv_val, &mapped_value, ctrls, NULL, &msgid ); rs->sr_err = meta_back_op_result( mc, op, rs, candidate, msgid, mt->mt_timeout[ SLAP_OP_COMPARE ], ( LDAP_BACK_SENDRESULT | retrying ) ); if ( rs->sr_err == LDAP_UNAVAILABLE && retrying ) { retrying &= ~LDAP_BACK_RETRYING; if ( meta_back_retry( op, rs, &mc, candidate, LDAP_BACK_SENDERR ) ) { /* if the identity changed, there might be need to re-authz */ (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls ); goto retry; } } cleanup:; (void)mi->mi_ldap_extra->controls_free( op, rs, &ctrls ); if ( mdn.bv_val != op->o_req_dn.bv_val ) { free( mdn.bv_val ); } if ( op->orc_ava->aa_value.bv_val != mapped_value.bv_val ) { free( mapped_value.bv_val ); } if ( mc ) { meta_back_release_conn( mi, mc ); } return rs->sr_err; }