receive.c

/*
	Copyright (C) 2013 - 2014 CurlyMo

	This file is part of pilight.

	pilight 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 3 of the License, or (at your option) any later
	version.

	pilight 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 pilight. If not, see	<http://www.gnu.org/licenses/>
*/

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

#include "pilight.h"
#include "common.h"
#include "settings.h"
#include "log.h"
#include "options.h"
#include "socket.h"
#include "ssdp.h"
#include "gc.h"

struct pilight_t pilight;
static int main_loop = 1;
static int sockfd = 0;
static char *recvBuff = NULL;

int main_gc(void) {
	main_loop = 0;
	sleep(1);

	if(recvBuff != NULL) {
		FREE(recvBuff);
		recvBuff = NULL;
	}
	if(sockfd > 0) {
		socket_write(sockfd, "HEART");
		socket_close(sockfd);
	}
	FREE(progname);
	xfree();

	return 0;
}

int main(int argc, char **argv) {
	// memtrack();

	gc_attach(main_gc);

	/* Catch all exit signals for gc */
	gc_catch();

	log_shell_enable();
	log_file_disable();

	log_level_set(LOG_NOTICE);

	progname = MALLOC(16);
	if(!progname) {
		logprintf(LOG_ERR, "out of memory");
		exit(EXIT_FAILURE);
	}
	strcpy(progname, "pilight-receive");
	struct options_t *options = NULL;
	struct ssdp_list_t *ssdp_list = NULL;

	char *server = NULL;
	unsigned short port = 0;
	unsigned short stats = 0;

	char *args = NULL;

	options_add(&options, 'H', "help", OPTION_NO_VALUE, 0, JSON_NULL, NULL, NULL);
	options_add(&options, 'V', "version", OPTION_NO_VALUE, 0, JSON_NULL, NULL, NULL);
	options_add(&options, 'S', "server", OPTION_HAS_VALUE, 0, JSON_NULL, NULL, "^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5]).){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$");
	options_add(&options, 'P', "port", OPTION_HAS_VALUE, 0, JSON_NULL, NULL, "[0-9]{1,4}");
	options_add(&options, 's', "statistics", OPTION_NO_VALUE, 0, JSON_NULL, NULL, "[0-9]{1,4}");

	/* Store all CLI arguments for later usage
	   and also check if the CLI arguments where
	   used correctly by the user. This will also
	   fill all necessary values in the options struct */
	while(1) {
		int c;
		c = options_parse(&options, argc, argv, 1, &args);
		if(c == -1)
			break;
		if(c == -2)
			c = 'H';
		switch(c) {
			case 'H':
				printf("\t -H --help\t\t\tdisplay this message\n");
				printf("\t -V --version\t\t\tdisplay version\n");
				printf("\t -S --server=x.x.x.x\t\tconnect to server address\n");
				printf("\t -P --port=xxxx\t\t\tconnect to server port\n");
				printf("\t -s --stats\t\t\tshow CPU and RAM statistics\n");
				exit(EXIT_SUCCESS);
			break;
			case 'V':
				printf("%s %s\n", progname, PILIGHT_VERSION);
				exit(EXIT_SUCCESS);
			break;
			case 'S':
				if(!(server = MALLOC(strlen(args)+1))) {
					logprintf(LOG_ERR, "out of memory");
					exit(EXIT_FAILURE);
				}
				strcpy(server, args);
			break;
			case 'P':
				port = (unsigned short)atoi(args);
			break;
			case 's':
				stats = 1;
			break;
			default:
				printf("Usage: %s -l location -d device\n", progname);
				exit(EXIT_SUCCESS);
			break;
		}
	}
	options_delete(options);

	if(server && port > 0) {
		if((sockfd = socket_connect(server, port)) == -1) {
			logprintf(LOG_ERR, "could not connect to pilight-daemon");
			return EXIT_FAILURE;
		}
	} else if(ssdp_seek(&ssdp_list) == -1) {
		logprintf(LOG_ERR, "no pilight ssdp connections found");
		goto close;
	} else {
		if((sockfd = socket_connect(ssdp_list->ip, ssdp_list->port)) == -1) {
			logprintf(LOG_ERR, "could not connect to pilight-daemon");
			goto close;
		}
	}
	if(ssdp_list) {
		ssdp_free(ssdp_list);
	}
	if(server) {
		FREE(server);
	}
	struct JsonNode *jclient = json_mkobject();
	struct JsonNode *joptions = json_mkobject();
	json_append_member(jclient, "action", json_mkstring("identify"));
	json_append_member(joptions, "receiver", json_mknumber(1, 0));
	json_append_member(joptions, "stats", json_mknumber(stats, 0));
	json_append_member(jclient, "options", joptions);
	char *out = json_stringify(jclient, NULL);
	socket_write(sockfd, out);
	json_free(out);
	json_delete(jclient);

	if(socket_read(sockfd, &recvBuff, 0) != 0 ||
     strcmp(recvBuff, "{\"status\":\"success\"}") != 0) {
		goto close;
	}

	while(main_loop) {
		if(socket_read(sockfd, &recvBuff, 0) != 0) {
			goto close;
		}
		char **array = NULL;
		unsigned int n = explode(recvBuff, "\n", &array), i = 0;
		for(i=0;i<n;i++) {
			struct JsonNode *jcontent = json_decode(array[i]);
			struct JsonNode *jtype = json_find_member(jcontent, "type");
			if(jtype != NULL) {
				json_remove_from_parent(jtype);
				json_delete(jtype);
			}
			char *content = json_stringify(jcontent, "\t");
			printf("%s\n", content);
			json_delete(jcontent);
			json_free(content);
			FREE(array[i]);
		}
		if(n > 0) {
			FREE(array);
		}
	}

close:
	if(sockfd > 0) {
		socket_close(sockfd);
	}
	if(recvBuff != NULL) {
		FREE(recvBuff);
		recvBuff = NULL;
	}
	options_gc();
	log_shell_disable();
	log_gc();
	return EXIT_SUCCESS;
}