/*
* fprint D-Bus daemon
* Copyright (C) 2008 Daniel Drake <dsd@gentoo.org>
* Copyright (C) 2020 Marco Trevisan <marco.trevisan@canonical.com>
*
* 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, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include <locale.h>
#include <poll.h>
#include <stdlib.h>
#include <gio/gio.h>
#include <glib.h>
#include <glib/gi18n.h>
#include <fprint.h>
#include <glib-object.h>
#include <glib-unix.h>
#include <gmodule.h>
#include "fprintd.h"
#include "storage.h"
#include "file_storage.h"
fp_storage store;
static gboolean no_timeout = FALSE;
static gboolean g_fatal_warnings = FALSE;
static void
set_storage_file (void)
{
store.init = &file_storage_init;
store.deinit = &file_storage_deinit;
store.print_data_save = &file_storage_print_data_save;
store.print_data_load = &file_storage_print_data_load;
store.print_data_delete = &file_storage_print_data_delete;
store.discover_prints = &file_storage_discover_prints;
store.discover_users = &file_storage_discover_users;
}
static gboolean
load_storage_module (const char *module_name)
{
GModule *module;
g_autofree char *filename = NULL;
filename = g_module_build_path (PLUGINDIR, module_name);
module = g_module_open (filename, 0);
if (module == NULL)
return FALSE;
if (!g_module_symbol (module, "init", (gpointer *) &store.init) ||
!g_module_symbol (module, "deinit", (gpointer *) &store.deinit) ||
!g_module_symbol (module, "print_data_save", (gpointer *) &store.print_data_save) ||
!g_module_symbol (module, "print_data_load", (gpointer *) &store.print_data_load) ||
!g_module_symbol (module, "print_data_delete", (gpointer *) &store.print_data_delete) ||
!g_module_symbol (module, "discover_prints", (gpointer *) &store.discover_prints))
{
g_module_close (module);
return FALSE;
}
g_module_make_resident (module);
return TRUE;
}
static gboolean
load_conf (void)
{
g_autofree char *filename = NULL;
g_autofree char *module_name = NULL;
g_autoptr(GKeyFile) file = NULL;
g_autoptr(GError) error = NULL;
filename = g_build_filename (SYSCONFDIR, "fprintd.conf", NULL);
file = g_key_file_new ();
g_debug ("About to load configuration file '%s'", filename);
if (!g_key_file_load_from_file (file, filename, G_KEY_FILE_NONE, &error))
{
g_warning ("Could not open \"%s\": %s\n", filename, error->message);
return FALSE;
}
module_name = g_key_file_get_string (file, "storage", "type", &error);
if (module_name == NULL)
return FALSE;
if (g_str_equal (module_name, "file"))
{
set_storage_file ();
return TRUE;
}
return load_storage_module (module_name);
}
static const GOptionEntry entries[] = {
{"g-fatal-warnings", 0, 0, G_OPTION_ARG_NONE, &g_fatal_warnings, "Make all warnings fatal", NULL},
{"no-timeout", 't', 0, G_OPTION_ARG_NONE, &no_timeout, "Do not exit after unused for a while", NULL},
{ NULL }
};
static gboolean
sigterm_callback (gpointer data)
{
GMainLoop *loop = data;
g_main_loop_quit (loop);
return FALSE;
}
static void
on_name_acquired (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
g_debug ("D-Bus service launched with name: %s", name);
}
static void
on_name_lost (GDBusConnection *connection,
const char *name,
gpointer user_data)
{
GMainLoop *loop = user_data;
g_warning ("Failed to get name: %s", name);
g_main_loop_quit (loop);
}
int
main (int argc, char **argv)
{
g_autoptr(GOptionContext) context = NULL;
g_autoptr(GMainLoop) loop = NULL;
g_autoptr(GError) error = NULL;
g_autoptr(FprintManager) manager = NULL;
g_autoptr(GDBusConnection) connection = NULL;
guint32 request_name_ret;
setlocale (LC_ALL, "");
bindtextdomain (GETTEXT_PACKAGE, LOCALEDIR);
bind_textdomain_codeset (GETTEXT_PACKAGE, "UTF-8");
textdomain (GETTEXT_PACKAGE);
context = g_option_context_new ("Fingerprint handler daemon");
g_option_context_add_main_entries (context, entries, GETTEXT_PACKAGE);
if (g_option_context_parse (context, &argc, &argv, &error) == FALSE)
{
g_warning ("couldn't parse command-line options: %s\n", error->message);
return 1;
}
if (g_fatal_warnings)
{
GLogLevelFlags fatal_mask;
fatal_mask = g_log_set_always_fatal (G_LOG_FATAL_MASK);
fatal_mask |= G_LOG_LEVEL_WARNING | G_LOG_LEVEL_CRITICAL;
g_log_set_always_fatal (fatal_mask);
}
/* Obtain a connection to the system bus */
connection = g_bus_get_sync (G_BUS_TYPE_SYSTEM, NULL, &error);
if (!G_IS_DBUS_CONNECTION (connection))
{
g_warning ("Failed to open connection to bus: %s", error->message);
return 1;
}
/* Load the configuration file,
* and the default storage plugin */
if (!load_conf ())
set_storage_file ();
store.init ();
loop = g_main_loop_new (NULL, FALSE);
g_unix_signal_add (SIGTERM, sigterm_callback, loop);
g_debug ("Launching FprintObject");
/* create the one instance of the Manager object to be shared between
* all fprintd users. This blocks until all the devices are enumerated */
manager = fprint_manager_new (connection, no_timeout);
/* Obtain the well-known name after the manager has been initialized.
* Otherwise a client immediately enumerating the devices will not see
* any. */
request_name_ret = g_bus_own_name_on_connection (connection,
FPRINT_SERVICE_NAME,
G_BUS_NAME_OWNER_FLAGS_NONE,
on_name_acquired,
on_name_lost,
loop, NULL);
g_debug ("entering main loop");
g_main_loop_run (loop);
g_bus_unown_name (request_name_ret);
g_debug ("main loop completed");
return 0;
}