/*
 * Copyright 1998-1999 The OpenLDAP Foundation, All Rights Reserved.
 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
 */
/*  Portions
 *  Copyright (c) 1990 Regents of the University of Michigan.
 *  All rights reserved.
 *
 *  unbind.c
 */

/* An Unbind Request looks like this:
 *
 *	UnbindRequest ::= NULL
 *
 * and has no response.
 */

#include "portable.h"

#include <stdio.h>
#include <ac/stdlib.h>

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

#include "ldap-int.h"

int
ldap_unbind_ext(
	LDAP *ld,
	LDAPControl **sctrls,
	LDAPControl **cctrls )
{
	return ldap_ld_free( ld, 1, sctrls, cctrls );
}

int
ldap_unbind( LDAP *ld )
{
	Debug( LDAP_DEBUG_TRACE, "ldap_unbind\n", 0, 0, 0 );

	return( ldap_unbind_ext( ld, NULL, NULL ) );
}


int
ldap_ld_free(
	LDAP *ld,
	int close,
	LDAPControl **sctrls,
	LDAPControl **cctrls )
{
	LDAPMessage	*lm, *next;
	int		err = LDAP_SUCCESS;
	LDAPRequest	*lr, *nextlr;

	if ( ld->ld_cldapnaddr == 0 ) {
		/* free LDAP structure and outstanding requests/responses */
		for ( lr = ld->ld_requests; lr != NULL; lr = nextlr ) {
			nextlr = lr->lr_next;
			ldap_free_request( ld, lr );
		}

		/* free and unbind from all open connections */
		while ( ld->ld_conns != NULL ) {
			ldap_free_connection( ld, ld->ld_conns, 1, close );
		}
	} else {
		int	i;

		for ( i = 0; i < ld->ld_cldapnaddr; ++i ) {
			LDAP_FREE( ld->ld_cldapaddrs[ i ] );
		}
		LDAP_FREE( ld->ld_cldapaddrs );
	}

	for ( lm = ld->ld_responses; lm != NULL; lm = next ) {
		next = lm->lm_next;
		ldap_msgfree( lm );
	}

#ifndef LDAP_NOCACHE
	if ( ld->ld_cache != NULL ) {
		ldap_destroy_cache( ld );
		ld->ld_cache = NULL;
	}
#endif /* !LDAP_NOCACHE */

	if ( ld->ld_error != NULL ) {
		LDAP_FREE( ld->ld_error );
		ld->ld_error = NULL;
	}

	if ( ld->ld_matched != NULL ) {
		LDAP_FREE( ld->ld_matched );
		ld->ld_matched = NULL;
	}

	if ( ld->ld_host != NULL ) {
		LDAP_FREE( ld->ld_host );
		ld->ld_host = NULL;
	}

	if ( ld->ld_ufnprefix != NULL ) {
		LDAP_FREE( ld->ld_ufnprefix );
		ld->ld_ufnprefix = NULL;
	}

	if ( ld->ld_filtd != NULL ) {
		ldap_getfilter_free( ld->ld_filtd );
		ld->ld_filtd = NULL;
	}

	if ( ld->ld_abandoned != NULL ) {
		LDAP_FREE( ld->ld_abandoned );
		ld->ld_abandoned = NULL;
	}

	if ( ld->ld_selectinfo != NULL ) {
		ldap_free_select_info( ld->ld_selectinfo );
		ld->ld_selectinfo = NULL;
	}

	if ( ld->ld_options.ldo_defbase != NULL ) {
		LDAP_FREE( ld->ld_options.ldo_defbase );
		ld->ld_options.ldo_defbase = NULL;
	}

	if ( ld->ld_options.ldo_defhost != NULL ) {
		LDAP_FREE( ld->ld_options.ldo_defhost );
		ld->ld_options.ldo_defhost = NULL;
	}

	ber_pvt_sb_destroy( &(ld->ld_sb) );   
   
	LDAP_FREE( (char *) ld );
   
	WSACleanup();

	return( err );
}

int
ldap_unbind_s( LDAP *ld )
{
	return( ldap_unbind_ext( ld, NULL, NULL ) );
}


int
ldap_send_unbind(
	LDAP *ld,
	Sockbuf *sb,
	LDAPControl **sctrls,
	LDAPControl **cctrls )
{
	BerElement	*ber;

	Debug( LDAP_DEBUG_TRACE, "ldap_send_unbind\n", 0, 0, 0 );

	/* create a message to send */
	if ( (ber = ldap_alloc_ber_with_options( ld )) == NULLBER ) {
		return( ld->ld_errno );
	}

	/* fill it in */
	if ( ber_printf( ber, "{itn", ++ld->ld_msgid,
	    LDAP_REQ_UNBIND ) == -1 ) {
		ld->ld_errno = LDAP_ENCODING_ERROR;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	/* Put Server Controls */
	if( ldap_int_put_controls( ld, sctrls, ber ) != LDAP_SUCCESS ) {
		ber_free( ber, 1 );
		return ld->ld_errno;
	}

	if ( ber_printf( ber, "}", ++ld->ld_msgid,
	    LDAP_REQ_UNBIND ) == -1 ) {
		ld->ld_errno = LDAP_ENCODING_ERROR;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	/* send the message */
	if ( ber_flush( sb, ber, 1 ) == -1 ) {
		ld->ld_errno = LDAP_SERVER_DOWN;
		ber_free( ber, 1 );
		return( ld->ld_errno );
	}

	return( LDAP_SUCCESS );
}