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Diffstat (limited to 'servers/slapd/back-meta/compare.c')
| -rw-r--r-- | servers/slapd/back-meta/compare.c | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/servers/slapd/back-meta/compare.c b/servers/slapd/back-meta/compare.c new file mode 100644 index 0000000..f6fd54d --- /dev/null +++ b/servers/slapd/back-meta/compare.c @@ -0,0 +1,154 @@ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 1999-2022 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 + * <http://www.OpenLDAP.org/license.html>. + */ +/* ACKNOWLEDGEMENTS: + * This work was initially developed by the Howard Chu for inclusion + * in OpenLDAP Software and subsequently enhanced by Pierangelo + * Masarati. + */ + +#include "portable.h" + +#include <stdio.h> + +#include <ac/string.h> +#include <ac/socket.h> + +#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; +} + |