/* ava.c - routines for dealing with attribute value assertions */
/* $OpenLDAP: pkg/ldap/servers/slapd/ava.c,v 1.40.2.2 2005/03/14 22:24:58 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
 *
 * Copyright 1998-2005 The OpenLDAP Foundation.
 * 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>.
 */
/* Portions Copyright (c) 1995 Regents of the University of Michigan.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that this notice is preserved and that due credit is given
 * to the University of Michigan at Ann Arbor. The name of the University
 * may not be used to endorse or promote products derived from this
 * software without specific prior written permission. This software
 * is provided ``as is'' without express or implied warranty.
 */

#include "portable.h"

#include <stdio.h>

#include <ac/string.h>
#include <ac/socket.h>

#include "slap.h"

#ifdef LDAP_COMP_MATCH
#include "component.h"
#endif

void
ava_free(
	Operation *op,
	AttributeAssertion *ava,
	int	freeit )
{
	op->o_tmpfree( ava->aa_value.bv_val, op->o_tmpmemctx );
	if ( freeit ) op->o_tmpfree( (char *) ava, op->o_tmpmemctx );
}

int
get_ava(
	Operation *op,
	BerElement	*ber,
	AttributeAssertion	**ava,
	unsigned usage,
	const char **text )
{
	int rc;
	ber_tag_t rtag;
	struct berval type, value;
	AttributeAssertion *aa;
#ifdef LDAP_COMP_MATCH
	AttributeAliasing* a_alias = NULL;
#endif

	rtag = ber_scanf( ber, "{mm}", &type, &value );

	if( rtag == LBER_ERROR ) {
		Debug( LDAP_DEBUG_ANY, "  get_ava ber_scanf\n", 0, 0, 0 );
		*text = "Error decoding attribute value assertion";
		return SLAPD_DISCONNECT;
	}

	aa = op->o_tmpalloc( sizeof( AttributeAssertion ), op->o_tmpmemctx );
	aa->aa_desc = NULL;
	aa->aa_value.bv_val = NULL;
#ifdef LDAP_COMP_MATCH
	aa->aa_cf = NULL;
#endif

	rc = slap_bv2ad( &type, &aa->aa_desc, text );

	if( rc != LDAP_SUCCESS ) {
		Debug( LDAP_DEBUG_FILTER,
		"get_ava: unknown attributeType %s\n", type.bv_val, 0, 0 );
		op->o_tmpfree( aa, op->o_tmpmemctx );
		return rc;
	}

	rc = asserted_value_validate_normalize(
		aa->aa_desc, ad_mr(aa->aa_desc, usage),
		usage, &value, &aa->aa_value, text, op->o_tmpmemctx );

	if( rc != LDAP_SUCCESS ) {
		Debug( LDAP_DEBUG_FILTER,
		"get_ava: illegal value for attributeType %s\n", type.bv_val, 0, 0 );
		op->o_tmpfree( aa, op->o_tmpmemctx );
		return rc;
	}

#ifdef LDAP_COMP_MATCH
	if( is_aliased_attribute ) {
		a_alias = is_aliased_attribute ( aa->aa_desc );
		if ( a_alias ) {
			rc = get_aliased_filter_aa ( op, aa, a_alias, text );
			if( rc != LDAP_SUCCESS ) {
				Debug( LDAP_DEBUG_FILTER,
						"get_ava:Invalid Attribute Aliasing\n", 0, 0, 0 );
				return rc;
			}
		}
	}
#endif
	*ava = aa;
	return LDAP_SUCCESS;
}
