/*
 * Asterisk -- An open source telephony toolkit.
 *
 * Copyright (C) 2004 - 2005, Anthony Minessale II.
 *
 * Anthony Minessale <anthmct@yahoo.com>
 *
 * A license has been granted to Digium (via disclaimer) for the use of
 * this code.
 *
 * See http://www.asterisk.org for more information about
 * the Asterisk project. Please do not directly contact
 * any of the maintainers of this project for assistance;
 * the project provides a web site, mailing lists and IRC
 * channels for your use.
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License Version 2. See the LICENSE file
 * at the top of the source tree.
 */

/*! \file
 *
 * \brief Application to dump channel variables
 *
 * \author Anthony Minessale <anthmct@yahoo.com>
 *
 * \ingroup applications
 */

#include "asterisk.h"

ASTERISK_FILE_VERSION(__FILE__, "$Revision: 40722 $")

#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>

#include "asterisk/file.h"
#include "asterisk/logger.h"
#include "asterisk/channel.h"
#include "asterisk/pbx.h"
#include "asterisk/module.h"
#include "asterisk/options.h"
#include "asterisk/utils.h"
#include "asterisk/lock.h"
#include "asterisk/utils.h"

static char *app = "DumpChan";
static char *synopsis = "Dump Info About The Calling Channel";
static char *desc = 
	"   DumpChan([<min_verbose_level>])\n"
	"Displays information on channel and listing of all channel\n"
	"variables. If min_verbose_level is specified, output is only\n"
	"displayed when the verbose level is currently set to that number\n"
	"or greater. \n";


static int serialize_showchan(struct ast_channel *c, char *buf, size_t size)
{
	struct timeval now;
	long elapsed_seconds = 0;
	int hour = 0, min = 0, sec = 0;
	char cgrp[BUFSIZ/2];
	char pgrp[BUFSIZ/2];
	char formatbuf[BUFSIZ/2];
	
	now = ast_tvnow();
	memset(buf, 0, size);
	if (!c)
		return 0;

	if (c->cdr) {
		elapsed_seconds = now.tv_sec - c->cdr->start.tv_sec;
		hour = elapsed_seconds / 3600;
		min = (elapsed_seconds % 3600) / 60;
		sec = elapsed_seconds % 60;
	}

	snprintf(buf,size, 
			 "Name=               %s\n"
			 "Type=               %s\n"
			 "UniqueID=           %s\n"
			 "CallerID=           %s\n"
			 "CallerIDName=       %s\n"
			 "DNIDDigits=         %s\n"
			 "RDNIS=              %s\n" 
			 "State=              %s (%d)\n"
			 "Rings=              %d\n"
			 "NativeFormat=       %s\n"
			 "WriteFormat=        %s\n"
			 "ReadFormat=         %s\n"
			 "1stFileDescriptor=  %d\n"
			 "Framesin=           %d %s\n"
			 "Framesout=          %d %s\n"
			 "TimetoHangup=       %ld\n"
			 "ElapsedTime=        %dh%dm%ds\n"
			 "Context=            %s\n"
			 "Extension=          %s\n"
			 "Priority=           %d\n"
			 "CallGroup=          %s\n"
			 "PickupGroup=        %s\n"
			 "Application=        %s\n"
			 "Data=               %s\n"
			 "Blocking_in=        %s\n",
			 c->name,
			 c->tech->type,
			 c->uniqueid,
			 S_OR(c->cid.cid_num, "(N/A)"),
			 S_OR(c->cid.cid_name, "(N/A)"),
			 S_OR(c->cid.cid_dnid, "(N/A)"),
			 S_OR(c->cid.cid_rdnis, "(N/A)"),
			 ast_state2str(c->_state),
			 c->_state,
			 c->rings,
			 ast_getformatname_multiple(formatbuf, sizeof(formatbuf), c->nativeformats),
			 ast_getformatname_multiple(formatbuf, sizeof(formatbuf), c->writeformat),
			 ast_getformatname_multiple(formatbuf, sizeof(formatbuf), c->readformat),
			 c->fds[0], c->fin & ~DEBUGCHAN_FLAG, (c->fin & DEBUGCHAN_FLAG) ? " (DEBUGGED)" : "",
			 c->fout & ~DEBUGCHAN_FLAG, (c->fout & DEBUGCHAN_FLAG) ? " (DEBUGGED)" : "", (long)c->whentohangup,
			 hour,
			 min,
			 sec,
			 c->context,
			 c->exten,
			 c->priority,
			 ast_print_group(cgrp, sizeof(cgrp), c->callgroup),
			 ast_print_group(pgrp, sizeof(pgrp), c->pickupgroup),
			 ( c->appl ? c->appl : "(N/A)" ),
			 ( c-> data ? S_OR(c->data, "(Empty)") : "(None)"),
			 (ast_test_flag(c, AST_FLAG_BLOCKING) ? c->blockproc : "(Not Blocking)"));

	return 0;
}

static int dumpchan_exec(struct ast_channel *chan, void *data)
{
	struct ast_module_user *u;
	char vars[BUFSIZ * 4];
	char info[1024];
	int level = 0;
	static char *line = "================================================================================";
	
	u = ast_module_user_add(chan);

	if (!ast_strlen_zero(data)) 
		level = atoi(data);

	pbx_builtin_serialize_variables(chan, vars, sizeof(vars));
	serialize_showchan(chan, info, sizeof(info));
	if (option_verbose >= level)
		ast_verbose("\nDumping Info For Channel: %s:\n%s\nInfo:\n%s\nVariables:\n%s%s\n", chan->name, line, info, vars, line);

	ast_module_user_remove(u);
	
	return 0;
}

static int unload_module(void)
{
	int res;

	res = ast_unregister_application(app);

	ast_module_user_hangup_all();

	return res;
}

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

AST_MODULE_INFO_STANDARD(ASTERISK_GPL_KEY, "Dump Info About The Calling Channel");