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/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */
/* camel-nntp-grouplist.c : getting/updating the list of newsgroups on the server. */
/*
* Author : Chris Toshok <toshok@ximian.com>
*
* Copyright (C) 2000 Ximian .
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation; either version 2 of the
* License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*/
#include <config.h>
#include <errno.h>
#include <string.h>
#include "camel-exception.h"
#include "camel-nntp-grouplist.h"
#include "camel-nntp-resp-codes.h"
static CamelNNTPGroupList *
camel_nntp_get_grouplist_from_server (CamelNNTPStore *store, CamelException *ex)
{
int status;
gboolean done = FALSE;
CamelNNTPGroupList *list;
CAMEL_NNTP_STORE_LOCK(store);
status = camel_nntp_command (store, ex, NULL,
"LIST");
if (status != NNTP_LIST_FOLLOWS) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SYSTEM,
_("Could not get group list from server."));
return NULL;
}
list = g_new0 (CamelNNTPGroupList, 1);
list->time = time (NULL);
while (!done) {
char *line;
if (camel_remote_store_recv_line (CAMEL_REMOTE_STORE (store), &line, ex) < 0) {
list->group_list = g_list_reverse(list->group_list);
return list;
}
if (*line == '.') {
done = TRUE;
}
else {
CamelNNTPGroupListEntry *entry = g_new (CamelNNTPGroupListEntry, 1);
char **split_line = g_strsplit (line, " ", 4);
entry->group_name = g_strdup (split_line[0]);
entry->high = atoi (split_line[1]);
entry->low = atoi (split_line[2]);
g_strfreev (split_line);
list->group_list = g_list_prepend (list->group_list, entry);
}
}
CAMEL_NNTP_STORE_UNLOCK(store);
list->group_list = g_list_reverse(list->group_list);
return list;
}
static CamelNNTPGroupList*
camel_nntp_get_grouplist_from_file (CamelNNTPStore *store, CamelException *ex)
{
gchar *root_dir = camel_nntp_store_get_toplevel_dir(CAMEL_NNTP_STORE(store));
gchar *grouplist_file = g_strdup_printf ("%s/grouplist", root_dir);
CamelNNTPGroupList *list;
FILE *fp;
char buf[300];
unsigned long time;
g_free (root_dir);
fp = fopen (grouplist_file, "r");
g_free (grouplist_file);
if (fp == NULL) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
_("Unable to load grouplist file for %s: %s"),
CAMEL_SERVICE(store)->url->host,
strerror(errno));
return NULL;
}
/* read the time */
if (!fgets (buf, sizeof (buf), fp)) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
_("Unable to load grouplist file for %s: %s"),
CAMEL_SERVICE(store)->url->host,
strerror(errno));
fclose (fp);
return NULL;
}
list = g_new0 (CamelNNTPGroupList, 1);
list->store = store;
sscanf (buf, "%lu", &time);
list->time = time;
while (fgets (buf, sizeof (buf), fp)) {
CamelNNTPGroupListEntry *entry = g_new (CamelNNTPGroupListEntry, 1);
char **split_line = g_strsplit (buf, " ", 4);
entry->group_name = g_strdup (split_line[0]);
entry->high = atoi (split_line[1]);
entry->low = atoi (split_line[2]);
g_strfreev (split_line);
list->group_list = g_list_prepend (list->group_list, entry);
}
fclose (fp);
list->group_list = g_list_reverse(list->group_list);
return list;
}
static void
save_entry (CamelNNTPGroupListEntry *entry, FILE *fp)
{
fprintf (fp, "%s %d %d\n", entry->group_name, entry->low, entry->high);
}
void
camel_nntp_grouplist_save (CamelNNTPGroupList *group_list, CamelException *ex)
{
FILE *fp;
gchar *root_dir = camel_nntp_store_get_toplevel_dir(CAMEL_NNTP_STORE(group_list->store));
gchar *grouplist_file = g_strdup_printf ("%s/grouplist", root_dir);
g_free (root_dir);
fp = fopen (grouplist_file, "w");
g_free (grouplist_file);
if (fp == NULL) {
camel_exception_setv (ex, CAMEL_EXCEPTION_SERVICE_UNAVAILABLE,
_("Unable to save grouplist file for %s: %s"),
CAMEL_SERVICE(group_list->store)->url->host,
strerror(errno));
return;
}
fprintf (fp, "%lu\n", (long)group_list->time);
g_list_foreach (group_list->group_list, (GFunc)save_entry, fp);
fclose (fp);
}
static void
free_entry (CamelNNTPGroupListEntry *entry, void *data)
{
g_free (entry->group_name);
g_free (entry);
}
void
camel_nntp_grouplist_free (CamelNNTPGroupList *group_list)
{
g_return_if_fail (group_list);
g_list_foreach (group_list->group_list, (GFunc)free_entry, NULL);
g_free (group_list);
}
CamelNNTPGroupList*
camel_nntp_grouplist_fetch (CamelNNTPStore *store, CamelException *ex)
{
CamelNNTPGroupList *list;
list = camel_nntp_get_grouplist_from_file (store, ex);
printf ("camel_nntp_get_grouplist_from_file returned %p\n", list);
if (!list) {
camel_exception_clear (ex);
list = camel_nntp_get_grouplist_from_server (store, ex);
if (!list) {
camel_nntp_grouplist_free (list);
}
else {
list->store = store;
camel_nntp_grouplist_save (list, ex);
return list;
}
}
return list;
}
gint
camel_nntp_grouplist_update (CamelNNTPGroupList *group_list, CamelException *ex)
{
return 0;
}
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