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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* qmi-proxy -- A proxy to communicate with QMI ports
*
* This program 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 2 of the License, or
* (at your option) any later version.
*
* 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* Copyright (C) 2013-2017 Aleksander Morgado <aleksander@aleksander.es>
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <string.h>
#include <glib.h>
#include <glib/gprintf.h>
#include <gio/gio.h>
#include <glib-unix.h>
#include <libqmi-glib.h>
#define PROGRAM_NAME "qmi-proxy"
#define PROGRAM_VERSION PACKAGE_VERSION
#define EMPTY_TIMEOUT_DEFAULT 300
/* Globals */
static GMainLoop *loop;
static QmiProxy *proxy;
static guint timeout_id;
/* Main options */
static gboolean verbose_flag;
static gboolean version_flag;
static gboolean no_exit_flag;
static gint empty_timeout = -1;
static GOptionEntry main_entries[] = {
{ "no-exit", 0, 0, G_OPTION_ARG_NONE, &no_exit_flag,
"Don't exit after being idle without clients",
NULL
},
{ "empty-timeout", 0, 0, G_OPTION_ARG_INT, &empty_timeout,
"If no clients, exit after this timeout. If set to 0, equivalent to --no-exit.",
"[SECS]"
},
{ "verbose", 'v', 0, G_OPTION_ARG_NONE, &verbose_flag,
"Run action with verbose logs, including the debug ones",
NULL
},
{ "version", 'V', 0, G_OPTION_ARG_NONE, &version_flag,
"Print version",
NULL
},
{ NULL }
};
static gboolean
quit_cb (gpointer user_data)
{
if (loop) {
g_warning ("Caught signal, stopping the loop...");
g_idle_add ((GSourceFunc) g_main_loop_quit, loop);
}
return FALSE;
}
static void
log_handler (const gchar *log_domain,
GLogLevelFlags log_level,
const gchar *message,
gpointer user_data)
{
const gchar *log_level_str;
time_t now;
gchar time_str[64];
struct tm *local_time;
gboolean err;
now = time ((time_t *) NULL);
local_time = localtime (&now);
strftime (time_str, 64, "%d %b %Y, %H:%M:%S", local_time);
err = FALSE;
switch (log_level) {
case G_LOG_LEVEL_WARNING:
log_level_str = "-Warning **";
err = TRUE;
break;
case G_LOG_LEVEL_CRITICAL:
case G_LOG_FLAG_FATAL:
case G_LOG_LEVEL_ERROR:
log_level_str = "-Error **";
err = TRUE;
break;
case G_LOG_LEVEL_DEBUG:
log_level_str = "[Debug]";
break;
default:
log_level_str = "";
break;
}
if (!verbose_flag && !err)
return;
g_fprintf (err ? stderr : stdout,
"[%s] %s %s\n",
time_str,
log_level_str,
message);
}
static void
print_version_and_exit (void)
{
g_print ("\n"
PROGRAM_NAME " " PROGRAM_VERSION "\n"
"Copyright (2013-2019) Aleksander Morgado\n"
"License GPLv2+: GNU GPL version 2 or later <http://gnu.org/licenses/gpl-2.0.html>\n"
"This is free software: you are free to change and redistribute it.\n"
"There is NO WARRANTY, to the extent permitted by law.\n"
"\n");
exit (EXIT_SUCCESS);
}
/*****************************************************************************/
static gboolean
stop_loop_cb (void)
{
timeout_id = 0;
if (loop)
g_main_loop_quit (loop);
return FALSE;
}
static void
proxy_n_clients_changed (QmiProxy *_proxy)
{
if (qmi_proxy_get_n_clients (proxy) == 0) {
g_assert (timeout_id == 0);
g_assert (empty_timeout > 0);
timeout_id = g_timeout_add_seconds (empty_timeout,
(GSourceFunc)stop_loop_cb,
NULL);
return;
}
/* At least one client, remove timeout if any */
if (timeout_id) {
g_source_remove (timeout_id);
timeout_id = 0;
}
}
/*****************************************************************************/
int main (int argc, char **argv)
{
GError *error = NULL;
GOptionContext *context;
setlocale (LC_ALL, "");
/* Setup option context, process it and destroy it */
context = g_option_context_new ("- Proxy for QMI devices");
g_option_context_add_main_entries (context, main_entries, NULL);
if (!g_option_context_parse (context, &argc, &argv, &error)) {
g_printerr ("error: %s\n",
error->message);
exit (EXIT_FAILURE);
}
g_option_context_free (context);
if (version_flag)
print_version_and_exit ();
g_log_set_handler (NULL, G_LOG_LEVEL_MASK, log_handler, NULL);
g_log_set_handler ("Qmi", G_LOG_LEVEL_MASK, log_handler, NULL);
if (verbose_flag)
qmi_utils_set_traces_enabled (TRUE);
/* Setup signals */
g_unix_signal_add (SIGINT, quit_cb, NULL);
g_unix_signal_add (SIGHUP, quit_cb, NULL);
g_unix_signal_add (SIGTERM, quit_cb, NULL);
/* Setup empty timeout */
if (empty_timeout < 0)
empty_timeout = EMPTY_TIMEOUT_DEFAULT;
/* Setup proxy */
proxy = qmi_proxy_new (&error);
if (!proxy) {
g_printerr ("error: %s\n", error->message);
exit (EXIT_FAILURE);
}
/* Don't exit the proxy when no clients are found */
if (!no_exit_flag && empty_timeout != 0) {
g_debug ("proxy will exit after %d secs if unused", empty_timeout);
proxy_n_clients_changed (proxy);
g_signal_connect (proxy,
"notify::" QMI_PROXY_N_CLIENTS,
G_CALLBACK (proxy_n_clients_changed),
NULL);
} else
g_debug ("proxy will remain running if unused");
/* Loop */
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
g_main_loop_unref (loop);
/* Cleanup; releases socket and such */
g_object_unref (proxy);
g_debug ("exiting 'qmi-proxy'...");
return EXIT_SUCCESS;
}
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