pop3_capa.c
2.9 KB
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2003, 2004, 2005, 2007, 2010 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 <string.h>
#include <stddef.h>
#include <stdlib.h>
#include <errno.h>
#include <mailutils/error.h>
#include <mailutils/list.h>
#include <mailutils/cctype.h>
#include <mailutils/cstr.h>
#include <mailutils/sys/pop3.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 || mu_isspace (*capa));
}
/*
CAPA command, return a list that contains the result.
It is the responsability of the caller to destroy the list(mu_list_destroy).
*/
int
mu_pop3_capa (mu_pop3_t pop3, int reread, mu_iterator_t *piter)
{
int status = 0;
if (pop3 == NULL)
return EINVAL;
if (pop3->capa)
{
if (!reread)
{
if (!piter)
return 0;
return mu_list_get_iterator (pop3->capa, piter);
}
mu_list_destroy (&pop3->capa);
}
status = mu_list_create (&pop3->capa);
if (status)
return status;
mu_list_set_comparator (pop3->capa, capa_comp);
mu_list_set_destroy_item (pop3->capa, mu_list_free_item);
switch (pop3->state)
{
case MU_POP3_NO_STATE:
status = mu_pop3_writeline (pop3, "CAPA\r\n");
MU_POP3_CHECK_ERROR (pop3, status);
MU_POP3_FCLR (pop3, MU_POP3_ACK);
pop3->state = MU_POP3_CAPA;
case MU_POP3_CAPA:
status = mu_pop3_response (pop3, NULL);
MU_POP3_CHECK_EAGAIN (pop3, status);
MU_POP3_CHECK_OK (pop3);
pop3->state = MU_POP3_CAPA_RX;
case MU_POP3_CAPA_RX:
status = mu_pop3_read_list (pop3, pop3->capa);
MU_POP3_CHECK_ERROR (pop3, status);
if (piter)
status = mu_list_get_iterator (pop3->capa, piter);
else
status = 0;
pop3->state = MU_POP3_NO_STATE;
break;
/* They must deal with the error first by reopening. */
case MU_POP3_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}