/*************************************************************************
* (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
*  by Michael Pounov <misho@openbsd-bg.org>
*
* $Author: misho $
* $Id: mqtt_pub.c,v 1.5 2017/10/08 22:49:25 misho Exp $
*
**************************************************************************
The ELWIX and AITNET software is distributed under the following
terms:

All of the documentation and software included in the ELWIX and AITNET
Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>

Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
	by Michael Pounov <misho@elwix.org>.  All rights reserved.

Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
1. Redistributions of source code must retain the above copyright
   notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright
   notice, this list of conditions and the following disclaimer in the
   documentation and/or other materials provided with the distribution.
3. All advertising materials mentioning features or use of this software
   must display the following acknowledgement:
This product includes software developed by Michael Pounov <misho@elwix.org>
ELWIX - Embedded LightWeight unIX and its contributors.
4. Neither the name of AITNET nor the names of its contributors
   may be used to endorse or promote products derived from this software
   without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
SUCH DAMAGE.
*/
#include "global.h"
#include "rtlm.h"
#include "mqtt.h"
#include "client.h"


extern char compiled[], compiledby[], compilehost[];

struct tagArgs *args;


static void
Usage(void)
{
	printf(	" -= MQTT Publisher Client =- Publisher from ELWIX\n"
		"=== %s@%s === Compiled: %s ===\n\n"
		" Syntax: mqtt_pub [options] <connect_to_broker[:port]> <ConnectID> <topic> <value_for_publish>\n\n"
		"\t-f\t\t\t'value_for_publish' is file name instead text\n"
		"\t-q <QoS>\t\tQoS level (0-at most 1, 1-at least 1, 2-exactly 1)\n"
		"\t-d\t\t\tSend duplicate message\n"
		"\t-r\t\t\tRetain message from broker\n\n"
		"\t-C\t\t\tNot clear before connect!!!\n"
		"\t-p <port>\t\tDifferent port for connect (default: 1883)\n"
		"\t-T <timeout>\t\tKeep alive timeout in seconds (default: 10sec)\n"
		"\t-U <username>\t\tUsername\n"
		"\t-P <password>\t\tPassword\n"
		"\t-W <topic>\t\tWill Topic\n"
		"\t-M <message>\t\tWill Message\n"
		"\t-v\t\t\tVerbose (more -vvv, more verbose)\n"
		"\t-h\t\t\tHelp! This screen\n\n", 
		compiledby, compilehost, compiled);
}

static void
cleanArgs(struct tagArgs * __restrict args)
{
	mqtt_msgFree(&args->msg, 42);
	AIT_FREE_VAL(&args->Will.Msg);
	AIT_FREE_VAL(&args->Will.Topic);
	AIT_FREE_VAL(&args->User);
	AIT_FREE_VAL(&args->Pass);
	AIT_FREE_VAL(&args->Publish);
	AIT_FREE_VAL(&args->Value);
	AIT_FREE_VAL(&args->ConnID);
}

static int
Publish(int sock)
{
	int siz = 0;
	u_short mid = 0;

#ifdef __NetBSD__
	srandom(getpid() ^ time(NULL));
#else
	srandomdev();
#endif
	mid = random() % USHRT_MAX;

	printf(" > Execute PUBLISH request #%d ... ", mid);
	siz = mqtt_cli_Publish(args->cli, mid, args->Dup, args->QoS, args->Retain, 
			AIT_GET_STR(&args->Publish), AIT_ADDR(&args->Value), AIT_LEN(&args->Value));
	if (siz == -1) {
		printf("Error:: Publish #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
		return -1;
	} else
		printf("Sended %d bytes \n", siz);

	return siz;
}


int
main(int argc, char **argv)
{
	char ch;
	ait_val_t val;
	u_short port = atoi(MQTT_PORT);
	int ret = 0;

	if (!(args = e_malloc(sizeof(struct tagArgs)))) {
		printf("Error:: in alloc arguments #%d - %s\n", errno, strerror(errno));
		return 1;
	} else
		memset(args, 0, sizeof(struct tagArgs));
	args->free = cleanArgs;

	if (!(args->msg = mqtt_msgAlloc(USHRT_MAX))) {
		printf("Error:: in mqtt buffer #%d - %s\n", mqtt_GetErrno(), mqtt_GetError());
		args->free(args);
		e_free(args);
		return 1;
	}

	AIT_SET_STR(&args->ConnID, "");
	AIT_SET_STR(&args->User, "");
	AIT_SET_STR(&args->Pass, "");

	args->ka = MQTT_KEEPALIVE;
	while ((ch = getopt(argc, argv, "T:U:P:p:q:drCW:M:fvh")) != -1)
		switch (ch) {
			case 'T':
				args->ka = (u_short) strtol(optarg, NULL, 0);
				break;
			case 'M':
				AIT_FREE_VAL(&args->Will.Msg);
				AIT_SET_STR(&args->Will.Msg, optarg);
				break;
			case 'W':
				AIT_FREE_VAL(&args->Will.Topic);
				AIT_SET_STR(&args->Will.Topic, optarg);
				break;
			case 'U':
				AIT_FREE_VAL(&args->User);
				AIT_SET_STR(&args->User, optarg);
				break;
			case 'P':
				AIT_FREE_VAL(&args->Pass);
				AIT_SET_STR(&args->Pass, optarg);
				break;
			case 'p':
				port = (u_short) strtol(optarg, NULL, 0);
				break;
			case 'q':
				args->QoS = (char) strtol(optarg, NULL, 0);
				if (args->QoS > MQTT_QOS_EXACTLY) {
					printf("Error:: invalid QoS level %d\n", args->QoS);
					args->free(args);
					e_free(args);
					return 1;
				}
				break;
			case 'd':
				args->Dup++;
				break;
			case 'r':
				args->Retain++;
				break;
			case 'C':
				args->notClear++;
				break;
			case 'f':
				args->isFile++;
				break;
			case 'v':
				e_incVerbose;
				break;
			case 'h':
			default:
				args->free(args);
				e_free(args);
				Usage();
				return 1;
		}
	argc -= optind;
	argv += optind;
	if (argc < 4) {
		printf("Error:: host for connect not found, connection id, topic or value not supplied!\n\n");
		args->free(args);
		e_free(args);
		Usage();
		return 1;
	} else {
		AIT_FREE_VAL(&args->ConnID);
		AIT_SET_STR(&args->ConnID, argv[1]);
		AIT_FREE_VAL(&args->Publish);
		AIT_SET_STR(&args->Publish, argv[2]);
		AIT_FREE_VAL(&args->Value);
		AIT_SET_STR(&args->Value, argv[3]);
	}
	if (!e_gethostbyname(*argv, port, &args->addr)) {
		printf("Error:: host not valid #%d - %s\n", elwix_GetErrno(), elwix_GetError());
		args->free(args);
		e_free(args);
		Usage();
		return 1;
	}
	printf("Connecting to %s:%d ... ", e_n2addr(&args->addr, &val), e_n2port(&args->addr));
	AIT_FREE_VAL(&val);

	if (!(args->cli = mqtt_cli_Open(&args->addr.sa, args->ka))) {
		args->free(args);
		e_free(args);
		return 2;
	}

	if (args->isFile && !OpenFile()) {
		mqtt_cli_Close(&args->cli);
		args->free(args);
		e_free(args);
		return 3;
	}

	switch ((ret = ConnectClient(args->cli->sock))) {
		case -1:
			printf(">> FAILED!\n");
			break;
		case MQTT_RETCODE_ACCEPTED:
			printf(">> OK\n");
			break;
		case MQTT_RETCODE_REFUSE_VER:
			printf(">> Incorrect version\n");
			break;
		case MQTT_RETCODE_REFUSE_ID:
			printf(">> Incorrect connectID\n");
			break;
		case MQTT_RETCODE_REFUSE_UNAVAIL:
			printf(">> Service unavailable\n");
			break;
		case MQTT_RETCODE_REFUSE_USERPASS:
			printf(">> Refuse user/pass\n");
			break;
		case MQTT_RETCODE_DENIED:
			printf(">> DENIED.\n");
			break;
	}

	if (ret == MQTT_RETCODE_ACCEPTED) {
		ret = (Publish(args->cli->sock) == -1);
	} else
		ret = 4;

	mqtt_cli_Close(&args->cli);

	CloseFile();
	args->free(args);
	e_free(args);
	return ret;
}