/*
 * Asterisk -- A telephony toolkit for Linux.
 *
 * GetChannelState application, returns status of channel.
 * 
 * Mike Tkachuk <mike@ukr.net>
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License
 *
 * Mark Spencer have original rights
 */

#include <asterisk/lock.h>
#include <asterisk/file.h>
#include <asterisk/logger.h>
#include <asterisk/channel.h>
#include <asterisk/pbx.h>
#include <asterisk/module.h>
#include <asterisk/translate.h>
#include <asterisk/image.h>
#include <asterisk/callerid.h>
#include <asterisk/utils.h>
#include <string.h>
#include <stdlib.h>

static char *synopsis = "Gets channel state";

static char *tdesc = "This application returns originating channel state of current channel";

static char *desc = "  GetChannelState()\n"
"Returns originating channel state.  Returns -1 if failure, 2 if DOWN, 3 if UP\n";

static char *app = "GetChannelState";

STANDARD_LOCAL_USER;

LOCAL_USER_DECL;

static int get_channel_state(struct ast_channel *chan, void *data)
{
        struct localuser *u;
        LOCAL_USER_ADD(u);
        int res = -1;
        
        if (chan) {
          if (chan->_softhangup){
            // Channel DOWN
           ast_log(LOG_NOTICE, "Channel DOWN");
           res = 2; 
          } else {
            // Channel UP
            ast_log(LOG_NOTICE, "Channel UP");
            res = 3;
          }
        } 

        LOCAL_USER_REMOVE(u);
        return res;
}

int unload_module(void)
{
        STANDARD_HANGUP_LOCALUSERS;
        return ast_unregister_application(app);
}

int load_module(void)
{
        return ast_register_application(app, get_channel_state, synopsis, desc);
}

char *description(void)
{
        return tdesc;
}

int usecount(void)
{
        int res;
        STANDARD_USECOUNT(res);
        return res;
}

char *key()
{
        return ASTERISK_GPL_KEY;
}