/*
* main
*
*/
int
main (int argc, char *argv[])
{
gboolean wifi_enabled = TRUE, net_enabled = TRUE, wwan_enabled = TRUE;
gboolean success = FALSE;
NMConfig *config;
GError *error = NULL;
gboolean wrote_pidfile = FALSE;
char *bad_domains = NULL;
NMConfigCmdLineOptions *config_cli;
nm_g_type_init ();
/* Known to cause a possible deadlock upon GDBus initialization:
* https://bugzilla.gnome.org/show_bug.cgi?id=674885 */
g_type_ensure (G_TYPE_SOCKET);
g_type_ensure (G_TYPE_DBUS_CONNECTION);
g_type_ensure (NM_TYPE_BUS_MANAGER);
_nm_utils_is_manager_process = TRUE;
main_loop = g_main_loop_new (NULL, FALSE);
config_cli = nm_config_cmd_line_options_new ();
do_early_setup (&argc, &argv, config_cli);
if (global_opt.g_fatal_warnings)
_set_g_fatal_warnings ();
if (global_opt.show_version) {
fprintf (stdout, NM_DIST_VERSION "\n");
exit (0);
}
nm_main_utils_ensure_root ();
nm_main_utils_ensure_not_running_pidfile (global_opt.pidfile);
/* Ensure state directory exists */
if (g_mkdir_with_parents (NMSTATEDIR, 0755) != 0) {
fprintf (stderr, "Cannot create '%s': %s", NMSTATEDIR, strerror (errno));
exit (1);
}
nm_main_utils_ensure_rundir ();
/* When running from the build directory, determine our build directory
* base and set helper paths in the build tree */
if (global_opt.run_from_build_dir) {
char *path, *slash;
int g;
/* exe is <basedir>/src/.libs/lt-NetworkManager, so chop off
* the last three components */
path = realpath ("/proc/self/exe", NULL);
g_assert (path != NULL);
for (g = 0; g < 3; ++g) {
slash = strrchr (path, '/');
g_assert (slash != NULL);
*slash = '\0';
}
/* don't free these strings, we need them for the entire
* process lifetime */
nm_dhcp_helper_path = g_strdup_printf ("%s/src/dhcp-manager/nm-dhcp-helper", path);
g_free (path);
}
if (!nm_logging_setup (global_opt.opt_log_level,
global_opt.opt_log_domains,
&bad_domains,
&error)) {
fprintf (stderr,
_("%s. Please use --help to see a list of valid options.\n"),
error->message);
exit (1);
} else if (bad_domains) {
fprintf (stderr,
_("Ignoring unrecognized log domain(s) '%s' passed on command line.\n"),
bad_domains);
g_clear_pointer (&bad_domains, g_free);
}
/* Read the config file and CLI overrides */
config = nm_config_setup (config_cli, NULL, &error);
nm_config_cmd_line_options_free (config_cli);
config_cli = NULL;
if (config == NULL) {
fprintf (stderr, _("Failed to read configuration: (%d) %s\n"),
error ? error->code : -1,
(error && error->message) ? error->message : _("unknown"));
exit (1);
}
_init_nm_debug (nm_config_get_debug (config));
/* Initialize logging from config file *only* if not explicitly
* specified by commandline.
*/
if (global_opt.opt_log_level == NULL && global_opt.opt_log_domains == NULL) {
if (!nm_logging_setup (nm_config_get_log_level (config),
nm_config_get_log_domains (config),
&bad_domains,
&error)) {
fprintf (stderr, _("Error in configuration file: %s.\n"),
error->message);
exit (1);
} else if (bad_domains) {
fprintf (stderr,
_("Ignoring unrecognized log domain(s) '%s' from config files.\n"),
bad_domains);
g_clear_pointer (&bad_domains, g_free);
}
}
if (global_opt.become_daemon && !nm_config_get_is_debug (config)) {
if (daemon (0, 0) < 0) {
int saved_errno;
saved_errno = errno;
fprintf (stderr, _("Could not daemonize: %s [error %u]\n"),
g_strerror (saved_errno),
saved_errno);
exit (1);
}
wrote_pidfile = nm_main_utils_write_pidfile (global_opt.pidfile);
}
/* Set up unix signal handling - before creating threads, but after daemonizing! */
nm_main_utils_setup_signals (main_loop);
nm_logging_syslog_openlog (nm_config_get_is_debug (config)
? "debug"
: nm_config_data_get_value_cached (NM_CONFIG_GET_DATA_ORIG,
NM_CONFIG_KEYFILE_GROUP_LOGGING,
NM_CONFIG_KEYFILE_KEY_LOGGING_BACKEND,
NM_CONFIG_GET_VALUE_STRIP | NM_CONFIG_GET_VALUE_NO_EMPTY));
nm_log_info (LOGD_CORE, "NetworkManager (version " NM_DIST_VERSION ") is starting...");
/* Parse the state file */
if (!parse_state_file (global_opt.state_file, &net_enabled, &wifi_enabled, &wwan_enabled, &error)) {
nm_log_err (LOGD_CORE, "State file %s parsing failed: (%d) %s",
global_opt.state_file,
error ? error->code : -1,
(error && error->message) ? error->message : _("unknown"));
/* Not a hard failure */
}
g_clear_error (&error);
nm_log_info (LOGD_CORE, "Read config: %s", nm_config_data_get_config_description (nm_config_get_data (config)));
nm_config_data_log (nm_config_get_data (config), "CONFIG: ");
nm_log_dbg (LOGD_CORE, "WEXT support is %s",
#if HAVE_WEXT
"enabled"
#else
"disabled"
#endif
);
nm_auth_manager_setup (nm_config_get_auth_polkit (config));
nm_manager_setup (global_opt.state_file,
net_enabled,
wifi_enabled,
wwan_enabled);
if (!nm_bus_manager_get_connection (nm_bus_manager_get ())) {
nm_log_warn (LOGD_CORE, "Failed to connect to D-Bus; only private bus is available");
} else {
/* Start our DBus service */
if (!nm_bus_manager_start_service (nm_bus_manager_get ())) {
nm_log_err (LOGD_CORE, "failed to start the dbus service.");
goto done;
}
}
/* Set up platform interaction layer */
nm_linux_platform_setup ();
NM_UTILS_KEEP_ALIVE (config, NM_PLATFORM_GET, "NMConfig-depends-on-NMPlatform");
nm_dispatcher_init ();
g_signal_connect (nm_manager_get (), NM_MANAGER_CONFIGURE_QUIT, G_CALLBACK (manager_configure_quit), config);
if (!nm_manager_start (nm_manager_get (), &error)) {
nm_log_err (LOGD_CORE, "failed to initialize: %s", error->message);
goto done;
}
/* Make sure the loopback interface is up. If interface is down, we bring
* it up and kernel will assign it link-local IPv4 and IPv6 addresses. If
* it was already up, we assume is in clean state.
*
* TODO: it might be desirable to check the list of addresses and compare
* it with a list of expected addresses (one of the protocol families
* could be disabled). The 'lo' interface is sometimes used for assigning
* global addresses so their availability doesn't depend on the state of
* physical interfaces.
*/
nm_log_dbg (LOGD_CORE, "setting up local loopback");
nm_platform_link_set_up (NM_PLATFORM_GET, 1, NULL);
success = TRUE;
if (configure_and_quit == FALSE)
g_main_loop_run (main_loop);
nm_manager_stop (nm_manager_get ());
done:
if (global_opt.pidfile && wrote_pidfile)
unlink (global_opt.pidfile);
nm_log_info (LOGD_CORE, "exiting (%s)", success ? "success" : "error");
exit (success ? 0 : 1);
}
static void
start_dnsmasq (NMDnsDnsmasq *self)
{
NMDnsDnsmasqPrivate *priv = NM_DNS_DNSMASQ_GET_PRIVATE (self);
const char *dm_binary;
const char *argv[15];
GPid pid = 0;
guint idx = 0;
NMBusManager *dbus_mgr;
GDBusConnection *connection;
if (priv->running) {
/* the dnsmasq process is running. Nothing to do. */
return;
}
if (nm_dns_plugin_child_pid ((NMDnsPlugin *) self) > 0) {
/* if we already have a child process spawned, don't do
* it again. */
return;
}
dm_binary = nm_utils_find_helper ("dnsmasq", DNSMASQ_PATH, NULL);
if (!dm_binary) {
_LOGW ("could not find dnsmasq binary");
return;
}
argv[idx++] = dm_binary;
argv[idx++] = "--no-resolv"; /* Use only commandline */
argv[idx++] = "--keep-in-foreground";
argv[idx++] = "--no-hosts"; /* don't use /etc/hosts to resolve */
argv[idx++] = "--bind-interfaces";
argv[idx++] = "--pid-file=" PIDFILE;
argv[idx++] = "--listen-address=127.0.0.1"; /* Should work for both 4 and 6 */
argv[idx++] = "--cache-size=400";
argv[idx++] = "--conf-file=/dev/null"; /* avoid loading /etc/dnsmasq.conf */
argv[idx++] = "--proxy-dnssec"; /* Allow DNSSEC to pass through */
argv[idx++] = "--enable-dbus=" DNSMASQ_DBUS_SERVICE;
/* dnsmasq exits if the conf dir is not present */
if (g_file_test (CONFDIR, G_FILE_TEST_IS_DIR))
argv[idx++] = "--conf-dir=" CONFDIR;
argv[idx++] = NULL;
nm_assert (idx <= G_N_ELEMENTS (argv));
/* And finally spawn dnsmasq */
pid = nm_dns_plugin_child_spawn (NM_DNS_PLUGIN (self), argv, PIDFILE, "bin/dnsmasq");
if (!pid)
return;
if ( priv->dnsmasq
|| priv->dnsmasq_cancellable) {
/* we already have a proxy or are about to create it.
* We are done. */
return;
}
dbus_mgr = nm_bus_manager_get ();
g_return_if_fail (dbus_mgr);
connection = nm_bus_manager_get_connection (dbus_mgr);
g_return_if_fail (connection);
priv->dnsmasq_cancellable = g_cancellable_new ();
g_dbus_proxy_new (connection,
G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START,
NULL,
DNSMASQ_DBUS_SERVICE,
DNSMASQ_DBUS_PATH,
DNSMASQ_DBUS_SERVICE,
priv->dnsmasq_cancellable,
dnsmasq_proxy_cb,
self);
}