capability.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 <string.h>
#include <mailutils/types.h>
#include <mailutils/cctype.h>
#include <mailutils/cstr.h>
#include <mailutils/errno.h>
#include <mailutils/stream.h>
#include <mailutils/list.h>
#include <mailutils/iterator.h>
#include <mailutils/sys/imap.h>
static int
capa_comp (const void *item, const void *value)
{
const char *capa = item;
const char *needle = value;
for (; *needle; capa++, needle++)
{
if (!*capa)
return 1;
if (mu_tolower (*capa) != mu_tolower (*needle))
return 1;
}
return !(*capa == 0 || *capa == '=');
}
static int
_map_capa (void **itmv, size_t itmc, void *call_data)
{
int *n = call_data;
struct imap_list_element *elt = itmv[0];
if (elt->type != imap_eltype_string)
return MU_LIST_MAP_STOP;
if (*n == 0)
{
*n = 1;
return MU_LIST_MAP_SKIP;
}
itmv[0] = elt->v.string;
elt->v.string = NULL;
return MU_LIST_MAP_OK;
}
static void
_capability_response_action (mu_imap_t imap, mu_list_t response, void *data)
{
struct imap_list_element *elt = _mu_imap_list_at (response, 0);
if (elt && _mu_imap_list_element_is_string (elt, "CAPABILITY"))
{
int n = 0;
mu_list_map (response, _map_capa, &n, 1, &imap->capa);
}
}
int
mu_imap_capability (mu_imap_t imap, int reread, mu_iterator_t *piter)
{
int status;
if (imap == NULL)
return EINVAL;
if (!imap->io)
return MU_ERR_NO_TRANSPORT;
if (imap->session_state == MU_IMAP_SESSION_INIT ||
imap->client_state != MU_IMAP_CLIENT_READY)
return MU_ERR_SEQ;
if (imap->capa)
{
if (!reread)
{
if (!piter)
return 0;
return mu_list_get_iterator (imap->capa, piter);
}
mu_list_destroy (&imap->capa);
}
switch (imap->client_state)
{
case MU_IMAP_CLIENT_READY:
status = _mu_imap_tag_next (imap);
MU_IMAP_CHECK_EAGAIN (imap, status);
status = mu_imapio_send_command (imap->io, imap->tag_str, NULL,
"CAPABILITY", NULL);
MU_IMAP_CHECK_EAGAIN (imap, status);
MU_IMAP_FCLR (imap, MU_IMAP_RESP);
imap->client_state = MU_IMAP_CLIENT_CAPABILITY_RX;
case MU_IMAP_CLIENT_CAPABILITY_RX:
status = _mu_imap_response (imap, _capability_response_action,
NULL);
imap->client_state = MU_IMAP_CLIENT_READY;
MU_IMAP_CHECK_EAGAIN (imap, status);
if (imap->response != MU_IMAP_OK)
return MU_ERR_REPLY;
else
{
mu_list_set_comparator (imap->capa, capa_comp);
mu_list_set_destroy_item (imap->capa, mu_list_free_item);
if (piter)
status = mu_list_get_iterator (imap->capa, piter);
else
status = 0;
}
break;
case MU_IMAP_CLIENT_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}