capability.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2010, 2011 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 <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/wordsplit.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 == '=');
}
int
mu_imap_capability (mu_imap_t imap, int reread, mu_iterator_t *piter)
{
int status;
if (imap == NULL)
return EINVAL;
if (!imap->carrier)
return MU_ERR_NO_TRANSPORT;
if (imap->state != MU_IMAP_CONNECTED)
return MU_ERR_SEQ;
if (imap->capa)
{
if (!reread)
{
if (!piter)
return 0;
return mu_list_get_iterator (imap->capa, piter);
}
mu_list_clear (imap->capa);
}
else
{
status = mu_list_create (&imap->capa);
MU_IMAP_CHECK_ERROR (imap, status);
mu_list_set_comparator (imap->capa, capa_comp);
mu_list_set_destroy_item (imap->capa, mu_list_free_item);
}
switch (imap->state)
{
case MU_IMAP_CONNECTED:
status = _mu_imap_tag_next (imap);
MU_IMAP_CHECK_EAGAIN (imap, status);
status = mu_stream_printf (imap->carrier, "%s CAPABILITY\r\n",
imap->tag_str);
MU_IMAP_CHECK_EAGAIN (imap, status);
MU_IMAP_FCLR (imap, MU_IMAP_RESP);
imap->state = MU_IMAP_CAPABILITY_RX;
case MU_IMAP_CAPABILITY_RX:
status = _mu_imap_response (imap);
MU_IMAP_CHECK_EAGAIN (imap, status);
if (imap->resp_code != MU_IMAP_OK)
return MU_ERR_REPLY;
else
{
size_t count;
char *str;
imap->state = MU_IMAP_CONNECTED;
mu_list_count (imap->untagged_resp, &count);
if (mu_list_get (imap->untagged_resp, 0, (void*)&str) == 0)
{
size_t i;
struct mu_wordsplit ws;
if (mu_wordsplit (str, &ws,
MU_WRDSF_NOVAR | MU_WRDSF_NOCMD |
MU_WRDSF_QUOTE | MU_WRDSF_SQUEEZE_DELIMS))
{
int ec = errno;
mu_error ("mu_imap_capability: cannot split line: %s",
mu_wordsplit_strerror (&ws));
return ec;
}
if (ws.ws_wordc > 1 &&
mu_c_strcasecmp (ws.ws_wordv[0], "CAPABILITY") == 0)
{
for (i = 1; i < ws.ws_wordc; i++)
{
mu_list_append (imap->capa, ws.ws_wordv[i]);
ws.ws_wordv[i] = NULL;
}
}
mu_wordsplit_free (&ws);
}
if (piter)
status = mu_list_get_iterator (imap->capa, piter);
else
status = 0;
}
break;
case MU_IMAP_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}