pop3_capa.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2003 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 2 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 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/sys/pop3.h>
/*
CAPA command, return a list that contains the result.
It is the responsability of the caller to destroy the list(list_destroy).
*/
int
mu_pop3_capa (mu_pop3_t pop3, list_t *plist)
{
int status;
if (pop3 == NULL || plist == NULL)
return EINVAL;
switch (pop3->state)
{
case MU_POP3_NO_STATE:
status = mu_pop3_writeline (pop3, "CAPA\r\n");
MU_POP3_CHECK_ERROR (pop3, status);
mu_pop3_debug_cmd (pop3);
pop3->state = MU_POP3_CAPA;
case MU_POP3_CAPA:
status = mu_pop3_send (pop3);
MU_POP3_CHECK_EAGAIN (pop3, status);
pop3->acknowledge = 0;
pop3->state = MU_POP3_CAPA_ACK;
case MU_POP3_CAPA_ACK:
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 = list_create (plist);
MU_POP3_CHECK_ERROR(pop3, status);
list_set_destroy_item(*plist, free);
pop3->state = MU_POP3_CAPA_RX;
case MU_POP3_CAPA_RX:
{
/* CAPA line are 512 octets maximum according to RFC 2449.
But do not use the stack and malloc. */
char *capability;
size_t n = 0;
capability = malloc (512);
if (capability == NULL)
{
MU_POP3_CHECK_ERROR(pop3, ENOMEM);
}
while ((status = mu_pop3_readline (pop3, capability, 512, &n)) > 0 && n > 0)
{
/* Nuke the trailing newline */
if (capability[n - 1] == '\n')
capability[n - 1] = '\0';
/* add to the list. */
list_append (*plist, strdup (capability));
n = 0;
}
free (capability);
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;
default:
status = EINPROGRESS;
}
return status;
}