/*
 * Copyright (c) 2006 Claus Assmann
 *
 * By using this file, you agree to the terms and conditions set
 * forth in the license/LICENSE.3C file which can be found at the
 * top level of this source code distribution.
 */

#include "sm/generic.h"
SM_RCSID("@(#)$Id: pm_add_domain.c,v 1.4 2006/11/22 03:44:15 ca Exp $")
#include "sm/assert.h"
#include "sm/error.h"
#include "sm/str-int.h"
#include "sm/str.h"
#include "sm/misc.h"

/*
**  SM_POSTMASTER_ADD_DOMAIN -- check for <postmaster> and convert it
**
**	Parameters:
**		str -- printable address
**		domain -- domain to append
**		offset -- where in str does the address begin?
**
**	Returns:
**		usual return code
*/

sm_ret_T
sm_postmaster_add_domain(sm_str_P str, sm_str_P domain, size_t offset)
{
	sm_ret_T ret;
#define POSTMASTER "<postmaster>"
#define POSTMASTER_LEN (sizeof(POSTMASTER) - 1)

	SM_IS_BUF(str);
	SM_IS_BUF(domain);
	SM_REQUIRE(offset < sm_str_getlen(str));

	if (strncasecmp((const char *)sm_str_data(str) + offset,
			(const char *)POSTMASTER, POSTMASTER_LEN) != 0)
		return SM_NOTDONE;
	if (sm_is_success(ret = sm_str_shorten(str, (int) offset)) &&
	    sm_is_success(ret = sm_str_scat(str, "<postmaster@")) &&
	    sm_is_success(ret = sm_str_cat(str, domain)) &&
	    sm_is_success(ret = sm_str_put(str, (uchar) '>')))
		return SM_SUCCESS;
	return ret;
}