smtp_rset.c
1.85 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010-2012 Free Software Foundation, Inc.
This library is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with GNU Mailutils. If not, see <http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <mailutils/errno.h>
#include <mailutils/filter.h>
#include <mailutils/list.h>
#include <mailutils/smtp.h>
#include <mailutils/stream.h>
#include <mailutils/sys/smtp.h>
int
mu_smtp_rset (mu_smtp_t smtp)
{
int status;
if (!smtp)
return EINVAL;
if (MU_SMTP_FISSET (smtp, _MU_SMTP_ERR))
return MU_ERR_FAILURE;
status = mu_smtp_write (smtp, "RSET\r\n");
MU_SMTP_CHECK_ERROR (smtp, status);
status = mu_smtp_response (smtp);
MU_SMTP_CHECK_ERROR (smtp, status);
if (smtp->replcode[0] != '2')
return MU_ERR_REPLY;
switch (smtp->state)
{
case MU_SMTP_INIT:
case MU_SMTP_EHLO:
case MU_SMTP_DOT:
/* RFC 2821, 4.1.1.5 RESET (RSET):
[RSET] is effectively equivalent to a NOOP (i.e., if has no effect)
if issued immediately after EHLO, before EHLO is issued in the
session, after an end-of-data indicator has been sent and
acknowledged, or immediately before a QUIT */
break;
default:
smtp->state = MU_SMTP_MAIL;
}
return 0;
}