nntp_list_active.c
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/* GNU Mailutils -- a suite of utilities for electronic mail
Copyright (C) 2004 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/nntp.h>
/*
LIST EXTENSIONS command, return a list that contains the result.
It is the responsability of the caller to destroy the list(list_destroy).
*/
int
mu_nntp_list_active (mu_nntp_t nntp, const char *wildmat, list_t *plist)
{
int status;
if (nntp == NULL)
return EINVAL;
if (plist == NULL)
return MU_ERR_OUT_PTR_NULL;
switch (nntp->state)
{
case MU_NNTP_NO_STATE:
if (wildmat == NULL || *wildmat == '\0')
status = mu_nntp_writeline (nntp, "LIST ACTIVE\r\n");
else
status = mu_nntp_writeline (nntp, "LIST ACTIVE %s\r\n", wildmat);
MU_NNTP_CHECK_ERROR (nntp, status);
mu_nntp_debug_cmd (nntp);
nntp->state = MU_NNTP_LIST_ACTIVE;
case MU_NNTP_LIST_ACTIVE:
status = mu_nntp_send (nntp);
MU_NNTP_CHECK_EAGAIN (nntp, status);
nntp->acknowledge = 0;
nntp->state = MU_NNTP_LIST_ACTIVE_ACK;
case MU_NNTP_LIST_ACTIVE_ACK:
status = mu_nntp_response (nntp, NULL, 0, NULL);
MU_NNTP_CHECK_EAGAIN (nntp, status);
mu_nntp_debug_ack (nntp);
MU_NNTP_CHECK_CODE (nntp, MU_NNTP_RESP_CODE_LIST_FOLLOW);
status = list_create (plist);
MU_NNTP_CHECK_ERROR(nntp, status);
list_set_destroy_item(*plist, free);
nntp->state = MU_NNTP_LIST_ACTIVE_RX;
case MU_NNTP_LIST_ACTIVE_RX:
{
/* line is 512 octets maximum according to RFC. */
char *active;
size_t n = 0;
active = malloc (512);
if (active == NULL)
{
/* MU_NNTP_CHECK_ERROR(nntp, ENOMEM);
We need to destroy the list if error. */
nntp->io.ptr = nntp->io.buf;
nntp->state = MU_NNTP_ERROR;
list_destroy (*plist);
return ENOMEM;
}
while ((status = mu_nntp_readline (nntp, active, 512, &n)) == 0 && n > 0)
{
/* Nuke the trailing newline */
if (active[n - 1] == '\n')
active[n - 1] = '\0';
/* add to the list. */
list_append (*plist, strdup (active));
n = 0;
}
free (active);
MU_NNTP_CHECK_EAGAIN (nntp, status);
nntp->state = MU_NNTP_NO_STATE;
break;
}
/* They must deal with the error first by reopening. */
case MU_NNTP_ERROR:
status = ECANCELED;
break;
default:
status = EINPROGRESS;
}
return status;
}
int
mu_nntp_parse_list_active (const char *buffer, char **group, unsigned long *high, unsigned long *low, char *status)
{
unsigned long dummy;
char cdummy;
char *name;
if (buffer == NULL || *buffer == '\0')
return EINVAL;
name = calloc(512, 1);
if (name == NULL)
return ENOMEM;
if (high == NULL)
high = &dummy;
if (low == NULL)
low = &dummy;
if (status == NULL)
status = &cdummy;
sscanf (buffer, "%511s %ld %ld %c", name, high, low, status);
if (group == NULL)
free (name);
else
*group = name;
return 0;
}