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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
* Copyright (C) 2009 Alexander Sack <asac@jwsdot.com>
*
* This file is part of:
* ntrack - Network Status Tracking for Desktop Applications
* http://launchpad.net/ntrack
*
* ntrack 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.
*
* ntrack 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 ntrack. If not, see <http://www.gnu.org/licenses/>.
*/
#include "ntrackmonitor.h"
#include "ntrack-arch.h"
#include <assert.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#define PACK_BLOCK_SIZE 256
static ntrack_monitor_t* __new ();
struct _listener_pack {
ntrack_monitor_callback_f callback;
ntrackpointer user_data;
ntrack_destroy_f destroy;
};
ntrack_monitor_t*
ntrack_monitor_get ()
{
static ntrack_monitor_t *monitor = 0;
if (!monitor) {
monitor = __new ();
}
return monitor;
}
ntrackpointer
ntrack_monitor_register (ntrack_monitor_t *self,
ntrack_monitor_callback_f callback,
ntrackpointer data)
{
int i, p = -1;
if (self->pack_size <= self->pack_len + 1) {
struct _listener_pack **sav = self->packs;
self->pack_size += PACK_BLOCK_SIZE;
self->packs = calloc (sizeof (struct _listener_pack*), self->pack_size);
free(sav);
}
for (i = 0; i < self->pack_size && p == -1; i++) {
if(!self->packs[i])
p=i;
}
/* its a bug if no slot is found */
assert (p >= 0);
self->pack_len++;
self->packs[p] = calloc (sizeof (struct _listener_pack), 1);
assert (self->packs[p]);
self->packs[p]->callback = callback;
self->packs[p]->user_data = data;
return self->packs[p];
}
ntrackpointer
ntrack_monitor_register_full (ntrack_monitor_t *self,
ntrack_monitor_callback_f callback,
ntrackpointer data,
ntrack_destroy_f func)
{
struct _listener_pack *pack = ntrack_monitor_register (self, callback, data);
if (pack)
pack->destroy = func;
return pack;
}
int
ntrack_monitor_remove (ntrack_monitor_t *self,
ntrackpointer ntrack_handle)
{
int i;
struct _listener_pack *pack;
if (!ntrack_handle)
return 0;
for (i = 0; i < self->pack_size; i++) {
if (self->packs[i] == ntrack_handle)
break;
}
if (i >= self->pack_size)
return 0;
pack = self->packs[i];
if (pack->destroy)
pack->destroy(pack->user_data);
self->packs[i] = 0;
free (pack);
return 1;
}
int*
ntrack_monitor_get_rfds (ntrack_monitor_t *self)
{
return _ntrack_arch_get_rfds (self);
}
int
ntrack_monitor_process_data (ntrack_monitor_t *self, int* fds)
{
return _ntrack_arch_process_data (self, fds);
}
ntrack_state_t
ntrack_monitor_get_state (ntrack_monitor_t *self)
{
return self->state;
}
static void
dispatch_monitor_event (ntrack_monitor_t *self,
ntrack_event_t event)
{
int i;
switch (event) {
case NTRACK_EVENT_CONNECT:
self->state = NTRACK_STATE_ONLINE;
break;
case NTRACK_EVENT_DISCONNECT:
self->state = NTRACK_STATE_OFFLINE;
break;
case NTRACK_EVENT_RECONNECT:
self->state = NTRACK_STATE_ONLINE;
break;
default:
self->state = NTRACK_STATE_UNKNOWN;
}
for (i = 0; i < self->pack_len; i++) {
struct _listener_pack *pack = self->packs[i];
pack->callback (self, event, pack->user_data);
}
}
static void
process_monitor_arch_event (ntrack_monitor_t *self,
ntrack_event_t event,
ntrackpointer user_data)
{
switch (event) {
case NTRACK_EVENT_CONNECT:
dispatch_monitor_event (self, NTRACK_EVENT_CONNECT);
break;
case NTRACK_EVENT_DISCONNECT:
dispatch_monitor_event (self, NTRACK_EVENT_DISCONNECT);
break;
case NTRACK_EVENT_RECONNECT:
dispatch_monitor_event (self, NTRACK_EVENT_RECONNECT);
break;
default:
printf ("Unknown ntrack_event_t: %d\n", event);
assert (FALSE);
}
}
/* private/static funcs */
static ntrack_monitor_t*
__new ()
{
/*delegate to arch specific implementation */
ntrack_monitor_t *arch = _ntrack_arch_new (process_monitor_arch_event, NULL);
return arch;
}
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