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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* 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:
*
* Copyright (C) 2019 Aleksander Morgado <aleksander@aleksander.es>*
* Copyright (C) 2024 Guido Günther <agx@sigxcpu.org>
*/
#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <locale.h>
#include <glib.h>
#include <glib-unix.h>
#include <gio/gio.h>
#include <libmm-glib.h>
#define PROGRAM_NAME "mmcbmmonitor"
#define PROGRAM_VERSION PACKAGE_VERSION
/* Globals */
static GMainLoop *loop;
static GList *monitored_cbm_list;
/* Context */
static gboolean version_flag;
static GOptionEntry main_entries[] = {
{ "version", 'V', 0, G_OPTION_ARG_NONE, &version_flag,
"Print version",
NULL
},
{ NULL }
};
static gboolean
signals_handler (void)
{
if (loop && g_main_loop_is_running (loop)) {
g_printerr ("%s\n",
"cancelling the main loop...\n");
g_main_loop_quit (loop);
}
return TRUE;
}
static void
print_version_and_exit (void)
{
g_print ("\n"
PROGRAM_NAME " " PROGRAM_VERSION "\n"
"Copyright (2019) Aleksander Morgado\n"
" (2024) Guido Günther\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 void
print_cbm (MMCbm *cbm)
{
g_print ("[%s] new cbm: %s\n",
mm_cbm_get_path (cbm),
mm_cbm_state_get_string (mm_cbm_get_state (cbm)));
if (mm_cbm_get_state (cbm) == MM_CBM_STATE_RECEIVED)
g_print(" %u: %s\n", mm_cbm_get_channel (cbm), mm_cbm_get_text (cbm));
}
static void
cbm_state_updated (MMCbm *cbm)
{
print_cbm (cbm);
}
static gboolean
cbm_added (MMModemCellBroadcast *modem_cell_broadcast,
const gchar *cbm_path)
{
g_autolist (MMObject) cbm_list = NULL;
GList *l;
MMCbm *new_cbm = NULL;
cbm_list = mm_modem_cell_broadcast_list_sync (modem_cell_broadcast, NULL, NULL);
for (l = cbm_list; l && !new_cbm; l = g_list_next (l)) {
MMCbm *l_cbm = MM_CBM (l->data);
if (g_strcmp0 (mm_cbm_get_path (l_cbm), cbm_path) == 0)
new_cbm = l_cbm;
}
g_assert (new_cbm);
print_cbm (new_cbm);
g_signal_connect (new_cbm, "notify::state", G_CALLBACK (cbm_state_updated), NULL);
monitored_cbm_list = g_list_append (monitored_cbm_list, g_object_ref (new_cbm));
return TRUE;
}
static void
list_all_cbm_found (MMModemCellBroadcast *modem_cell_broadcast)
{
g_autolist (MMObject) cbm_list= NULL;
GList *l;
cbm_list = mm_modem_cell_broadcast_list_sync (modem_cell_broadcast, NULL, NULL);
for (l = cbm_list; l; l = g_list_next (l)) {
MMCbm *l_cbm = MM_CBM (l->data);
print_cbm (l_cbm);
g_signal_connect (l_cbm, "notify::state", G_CALLBACK (cbm_state_updated), NULL);
monitored_cbm_list = g_list_append (monitored_cbm_list, g_object_ref (l_cbm));
}
}
static void
on_modem_added (MMManager *manager,
MMObject *object,
gpointer unused)
{
MMModemCellBroadcast *modem_cell_broadcast;
g_print ("Modem found at path: %s\n", mm_object_get_path (object));
modem_cell_broadcast = MM_MODEM_CELL_BROADCAST (mm_object_peek_modem_cell_broadcast (object));
g_signal_connect (modem_cell_broadcast, "added", G_CALLBACK (cbm_added), NULL);
list_all_cbm_found (modem_cell_broadcast);
}
int main (int argc, char **argv)
{
g_autoptr (GOptionContext) context = NULL;
g_autoptr (GDBusConnection) connection = NULL;
g_autoptr (MMManager) manager = NULL;
g_autofree gchar *name_owner = NULL;
g_autoptr (GError) error = NULL;
g_autolist (MMObject) modem_list = NULL;
GList *l;
setlocale (LC_ALL, "");
/* Setup option context, process it and destroy it */
context = g_option_context_new ("- ModemManager CBM monitor");
g_option_context_add_main_entries (context, main_entries, NULL);
g_option_context_parse (context, &argc, &argv, NULL);
if (version_flag)
print_version_and_exit ();
/* Setup dbus connection to use */
connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
if (!connection) {
g_printerr ("error: couldn't get bus: %s\n",
error ? error->message : "unknown error");
exit (EXIT_FAILURE);
}
manager = mm_manager_new_sync (connection,
G_DBUS_OBJECT_MANAGER_CLIENT_FLAGS_DO_NOT_AUTO_START,
NULL,
&error);
if (!manager) {
g_printerr ("error: couldn't create manager: %s\n",
error ? error->message : "unknown error");
exit (EXIT_FAILURE);
}
name_owner = g_dbus_object_manager_client_get_name_owner (G_DBUS_OBJECT_MANAGER_CLIENT (manager));
if (!name_owner) {
g_printerr ("error: couldn't find the ModemManager process in the bus\n");
exit (EXIT_FAILURE);
}
modem_list = g_dbus_object_manager_get_objects (G_DBUS_OBJECT_MANAGER (manager));
for (l = modem_list; l; l = g_list_next (l))
on_modem_added (manager, MM_OBJECT (l->data), NULL);
g_signal_connect (manager, "object-added", G_CALLBACK (on_modem_added), NULL);
g_unix_signal_add (SIGINT, (GSourceFunc) signals_handler, NULL);
g_unix_signal_add (SIGHUP, (GSourceFunc) signals_handler, NULL);
g_unix_signal_add (SIGTERM, (GSourceFunc) signals_handler, NULL);
/* Setup main loop and schedule start in idle */
loop = g_main_loop_new (NULL, FALSE);
g_main_loop_run (loop);
/* Cleanup */
g_list_free_full (monitored_cbm_list, g_object_unref);
g_main_loop_unref (loop);
return EXIT_SUCCESS;
}
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