test: new 'mmsmsmonitor' tool to monitor SMS messages

The tool monitors SMS message additions and SMS state updates, e.g.:

  $ sudo ./test/mmsmsmonitor
  [/org/freedesktop/ModemManager1/SMS/0] sms found: received
  [/org/freedesktop/ModemManager1/SMS/1] sms found: received
  [/org/freedesktop/ModemManager1/SMS/2] sms found: received
  [/org/freedesktop/ModemManager1/SMS/3] sms found: received
  [/org/freedesktop/ModemManager1/SMS/4] sms found: received
  [/org/freedesktop/ModemManager1/SMS/5] sms found: received
  [/org/freedesktop/ModemManager1/SMS/6] sms found: received
  [/org/freedesktop/ModemManager1/SMS/7] new sms: receiving
  [/org/freedesktop/ModemManager1/SMS/7] sms updated: received

.gitignore

@@ -171,6 +171,7 @@ Makefile.in
 /test/mmtty
 /test/mmrules
 /test/mmsmspdu
+/test/mmsmsmonitor
 
 /ModemManager-*-coverage.info
 /ModemManager-*-coverage/

test/Makefile.am

@@ -91,6 +91,31 @@ mmsmspdu_LDADD = \
 	$(top_builddir)/src/libhelpers.la \
 	$(NULL)
 
+################################################################################
+# mmsmsmonitor
+################################################################################
+
+noinst_PROGRAMS += mmsmsmonitor
+
+mmsmsmonitor_SOURCES = mmsmsmonitor.c
+
+mmsmsmonitor_CPPFLAGS = \
+	$(MM_CFLAGS) \
+	-I$(top_srcdir) \
+	-I$(top_srcdir)/src \
+	-I$(top_srcdir)/include \
+	-I$(top_builddir)/include \
+	-I$(top_srcdir)/libmm-glib \
+	-I$(top_srcdir)/libmm-glib/generated \
+	-I$(top_builddir)/libmm-glib/generated
+	$(NULL)
+
+mmsmsmonitor_LDADD = \
+	$(MM_LIBS) \
+	$(top_builddir)/libmm-glib/libmm-glib.la \
+	$(top_builddir)/src/libhelpers.la \
+	$(NULL)
+
 ################################################################################
 # mmcli-test-sms
 ################################################################################

test/mmsmsmonitor.c

@@ -0,0 +1,195 @@
+/* -*- 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>
+ */
+
+#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    "mmsmsmonitor"
+#define PROGRAM_VERSION PACKAGE_VERSION
+
+/* Globals */
+static GMainLoop *loop;
+static GList     *monitored_sms_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"
+             "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
+sms_state_updated (MMSms *sms)
+{
+    g_print ("[%s] sms updated: %s\n",
+             mm_sms_get_path (sms),
+             mm_sms_state_get_string (mm_sms_get_state (sms)));
+}
+
+static gboolean
+sms_added (MMModemMessaging *modem_messaging,
+           const gchar      *sms_path,
+           gboolean          received)
+{
+    GList *sms_list;
+    GList *l;
+    MMSms *new_sms = NULL;
+
+    sms_list = mm_modem_messaging_list_sync (modem_messaging, NULL, NULL);
+    for (l = sms_list; l && !new_sms; l = g_list_next (l)) {
+        MMSms *l_sms = MM_SMS  (l->data);
+
+        if (g_strcmp0 (mm_sms_get_path (l_sms), sms_path) == 0)
+            new_sms = l_sms;
+    }
+    g_assert (new_sms);
+
+    g_print ("[%s] new sms: %s\n",
+             mm_sms_get_path (new_sms),
+             mm_sms_state_get_string (mm_sms_get_state (new_sms)));
+    g_signal_connect (new_sms, "notify::state", G_CALLBACK (sms_state_updated), NULL);
+    monitored_sms_list = g_list_append (monitored_sms_list, g_object_ref (new_sms));
+
+    g_list_free_full (sms_list, g_object_unref);
+    return TRUE;
+}
+
+static void
+list_all_sms_found (MMModemMessaging *modem_messaging)
+{
+    GList *sms_list;
+    GList *l;
+
+    sms_list = mm_modem_messaging_list_sync (modem_messaging, NULL, NULL);
+    for (l = sms_list; l; l = g_list_next (l)) {
+        MMSms *l_sms = MM_SMS  (l->data);
+
+        g_print ("[%s] sms found: %s\n",
+                 mm_sms_get_path (l_sms),
+                 mm_sms_state_get_string (mm_sms_get_state (l_sms)));
+        g_signal_connect (l_sms, "notify::state", G_CALLBACK (sms_state_updated), NULL);
+        monitored_sms_list = g_list_append (monitored_sms_list, g_object_ref (l_sms));
+    }
+    g_list_free_full (sms_list, g_object_unref);
+}
+
+int main (int argc, char **argv)
+{
+    GOptionContext  *context;
+    GDBusConnection *connection;
+    MMManager       *manager;
+    GList           *modem_list;
+    GList           *l;
+    gchar           *name_owner;
+    GError          *error = NULL;
+
+    setlocale (LC_ALL, "");
+
+    /* Setup option context, process it and destroy it */
+    context = g_option_context_new ("- ModemManager SMS monitor");
+    g_option_context_add_main_entries (context, main_entries, NULL);
+    g_option_context_parse (context, &argc, &argv, NULL);
+    g_option_context_free (context);
+
+    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);
+    }
+    g_free (name_owner);
+
+    modem_list = g_dbus_object_manager_get_objects (G_DBUS_OBJECT_MANAGER (manager));
+    for (l = modem_list; l; l = g_list_next (l)) {
+        MMObject         *obj;
+        MMModemMessaging *modem_messaging;
+
+        obj             = MM_OBJECT (l->data);
+        modem_messaging = MM_MODEM_MESSAGING (mm_object_peek_modem_messaging (obj));
+
+        g_signal_connect (modem_messaging, "added", G_CALLBACK (sms_added), NULL);
+        list_all_sms_found (modem_messaging);
+    }
+
+    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 shedule start in idle */
+    loop = g_main_loop_new (NULL, FALSE);
+    g_main_loop_run (loop);
+
+    /* Cleanup */
+    g_main_loop_unref (loop);
+    g_list_free_full (modem_list, g_object_unref);
+    g_object_unref (manager);
+    return EXIT_SUCCESS;
+}