pop3_stls.c
2.59 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 1999, 2000, 2001, 2003, 2007 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 of the License, 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 this library; if not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301 USA */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <mailutils/sys/pop3.h>
#include <mailutils/tls.h>
#include <mailutils/md5.h>
/*
* STLS
* We have to assume that the caller check the CAPA and TLS was supported.
*/
int
mu_pop3_stls (mu_pop3_t pop3)
{
#ifdef WITH_TLS
int status;
/* Sanity checks. */
if (pop3 == NULL)
{
return EINVAL;
}
switch (pop3->state)
{
case MU_POP3_NO_STATE:
status = mu_pop3_writeline (pop3, "STLS\r\n");
MU_POP3_CHECK_ERROR (pop3, status);
mu_pop3_debug_cmd (pop3);
pop3->state = MU_POP3_STLS;
case MU_POP3_STLS:
status = mu_pop3_send (pop3);
MU_POP3_CHECK_EAGAIN (pop3, status);
pop3->acknowledge = 0;
pop3->state = MU_POP3_STLS_ACK;
case MU_POP3_STLS_ACK:
{
mu_stream_t tls_stream;
status = mu_pop3_response (pop3, NULL, 0, NULL);
MU_POP3_CHECK_EAGAIN (pop3, status);
mu_pop3_debug_ack (pop3);
MU_POP3_CHECK_OK (pop3);
status = mu_tls_stream_create_client_from_tcp (&tls_stream, pop3->carrier, 0);
MU_POP3_CHECK_ERROR (pop3, status);
pop3->carrier = tls_stream;
pop3->state = MU_POP3_STLS_CONNECT;
break;
}
case MU_POP3_STLS_CONNECT:
status = mu_stream_open (pop3->carrier);
MU_POP3_CHECK_EAGAIN (pop3, status);
pop3->state = MU_POP3_NO_STATE;
break;
/* They must deal with the error first by reopening. */
case MU_POP3_ERROR:
status = ECANCELED;
break;
/* No case in the switch another operation was in progress. */
default:
status = EINPROGRESS;
}
return status;
#else
(void)pop3;
return ENOTSUP;
#endif
}