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/*
* Hot Beverage Companion – server module
*
* Copyright (C) 2017-2018 Gediminas Jakutis
*
* This library 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; version 2.1
* of the License.
*
* This program 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/udp.h>
#include <arpa/inet.h>
#include <poll.h>
#include <unistd.h>
#include <stdio.h>
#include <string.h>
#include <stddef.h>
#include <stdlib.h>
#include <time.h>
#include "util.h"
#include "net.h"
#include "ui.h"
struct settings {
struct timespec period;
enum uitype ui;
unsigned short int port;
};
static int init(int argc, char ***argv, const struct settings * const settings);
static struct settings parseargs(int argc, char **argv);
static enum uitype identify_ui(const char * const s);
static struct timespec calc_period(const char * const s);
static size_t printhelp(const char * const name);
int main(int argc, char **argv)
{
struct settings settings;
int ret;
int nd;
settings = parseargs(argc, argv);
nd = init(argc, &argv, &settings);
if (nd == ERROR) {
ret = nd;
goto fail;
}
ret = ui_startloop();
fail:
net_close(nd);
return ret;
}
static int init(int argc, char ***argv, const struct settings * const settings)
{
int ret = A_OK;
int nd;
nd = net_init(settings->port);
if (nd == ERROR) {
ret = nd;
goto fail;
}
ret = ui_init(argc, argv, settings->ui, nd, settings->period);
if (ret == ERROR) {
net_close(nd);
goto fail;
}
fail:
return ret;
}
static struct settings parseargs(int argc, char **argv)
{
/* collection of defaults */
struct settings ret = {{0, 200 * 1000 * 1000}, /* 200 ms */
ui_curses,
2191};
ssize_t i;
if (argc == 1) {
return ret;
}
for (i = 1; i < argc; ++i) {
if (!(strncmp(argv[i], "--period=", 8))) {
ret.period = strlen(argv[i]) > 9 ? calc_period(argv[i] + 9) : (struct timespec) {0, printhelp(*argv)};
} else if (!(strncmp(argv[i], "--ui=", 5))) {
ret.ui = strlen(argv[i]) > 5 ? identify_ui(argv[i] + 5) : printhelp(*argv);
} else if (!(strncmp(argv[i], "--port=", 7))) {
ret.port = strlen(argv[i]) > 7 ? strtoul(argv[i] + 7, NULL, 10) : printhelp(*argv);
} else {
printhelp(*argv);
}
}
return ret;
}
static enum uitype identify_ui(const char * const s)
{
/* TODO: stub! */
return ui_curses;
}
static struct timespec calc_period(const char * const s)
{
/* TODO: stub! */
return (struct timespec) {0, 200 * 1000 * 1000};
}
static size_t printhelp(const char * const name)
{
printf( "This is a coffeetemp companion application\n"
"\n"
"usage:\t%s [options]\n"
"\n"
"Options:\n"
" --period=<num> set network polling rate to <num> milliseconds (default: 200)\n"
" --ui=<name> set the UI frontend (default: curses)\n"
" * possible choices: [none, file, curses, gtk]\n"
" --port=<num> set the listening port number to <num>\n"
"\n"
"In case more than one same option is provided, the last one take precedence\n"
"\n",
name);
exit(EXIT_FAILURE);
return 0;
}
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