connect.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010-2012, 2014-2016 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, see
<http://www.gnu.org/licenses/>. */
#ifdef HAVE_CONFIG_H
# include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include <errno.h>
#include <sys/select.h>
#include <sys/time.h>
#include <mailutils/errno.h>
#include <mailutils/imapio.h>
#include <mailutils/sys/imap.h>
#include <mailutils/sys/imapio.h>
int
mu_imap_connect (mu_imap_t imap)
{
int status;
size_t wc;
char **wv;
char *bufptr;
size_t bufsize;
if (imap == NULL)
return EINVAL;
if (imap->io == NULL)
return EINVAL;
_mu_imap_clrerrstr (imap);
switch (imap->client_state)
{
default:
case MU_IMAP_CLIENT_READY:
if (imap->session_state != MU_IMAP_SESSION_INIT)
{
status = mu_imap_disconnect (imap);
if (status != 0)
{
/* Sleep for 2 seconds (FIXME: Must be configurable) */
struct timeval tval;
tval.tv_sec = 2;
tval.tv_usec = 0;
select (0, NULL, NULL, NULL, &tval);
}
}
imap->client_state = MU_IMAP_CLIENT_CONNECT_RX;
case MU_IMAP_CLIENT_CONNECT_RX:
/* Establish the connection. */
if (!mu_stream_is_open (imap->io->_imap_stream))
{
status = mu_stream_open (imap->io->_imap_stream);
MU_IMAP_CHECK_EAGAIN (imap, status);
MU_IMAP_FCLR (imap, MU_IMAP_RESP);
}
imap->client_state = MU_IMAP_CLIENT_GREETINGS;
case MU_IMAP_CLIENT_GREETINGS:
status = mu_imapio_getline (imap->io);
MU_IMAP_CHECK_EAGAIN (imap, status);
mu_imapio_get_words (imap->io, &wc, &wv);
if (wc < 2 || strcmp (wv[0], "*"))
{
mu_imapio_getbuf (imap->io, &bufptr, &bufsize);
mu_error ("mu_imap_connect: invalid server response: %s",
bufptr);
imap->client_state = MU_IMAP_CLIENT_ERROR;
return MU_ERR_BADREPLY;
}
else
{
mu_list_t list;
status = _mu_imap_untagged_response_to_list (imap, &list);
if (status)
break;
_mu_imap_process_untagged_response (imap, list, NULL, NULL);
mu_list_destroy (&list);
switch (imap->client_state)
{
case MU_IMAP_CLIENT_READY:
status = 0;
break;
case MU_IMAP_CLIENT_CLOSING:
status = EACCES;
break;
default:
imap->client_state = MU_IMAP_CLIENT_ERROR;
status = MU_ERR_BADREPLY;
}
}
break;
}
return status;
}