/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ /* NetworkManager system settings service * * Dan Williams * Søren Sandmann * * 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. * * Copyright (C) 2007 - 2008 Red Hat, Inc. */ #include #include #include #include #include #include #include #include #include #include #include #ifndef NO_GIO #include #else #include #endif #include "common.h" #include "nm-dbus-glib-types.h" #include "plugin.h" #include "nm-system-config-interface.h" #include "nm-ifcfg-connection.h" #include "nm-inotify-helper.h" #include "shvar.h" #include "writer.h" static void system_config_interface_init (NMSystemConfigInterface *system_config_interface_class); static void connection_changed_handler (SCPluginIfcfg *plugin, const char *path, NMIfcfgConnection *connection, gboolean *do_remove, gboolean *do_new); static void handle_connection_remove_or_new (SCPluginIfcfg *plugin, const char *path, NMIfcfgConnection *connection, gboolean do_remove, gboolean do_new); G_DEFINE_TYPE_EXTENDED (SCPluginIfcfg, sc_plugin_ifcfg, G_TYPE_OBJECT, 0, G_IMPLEMENT_INTERFACE (NM_TYPE_SYSTEM_CONFIG_INTERFACE, system_config_interface_init)) #define SC_PLUGIN_IFCFG_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), SC_TYPE_PLUGIN_IFCFG, SCPluginIfcfgPrivate)) typedef struct { DBusGConnection *g_connection; NMSystemConfigHalManager *hal_mgr; GHashTable *connections; gulong ih_event_id; int sc_network_wd; char *hostname; GFileMonitor *monitor; guint monitor_id; } SCPluginIfcfgPrivate; static void check_unmanaged (gpointer key, gpointer data, gpointer user_data) { GSList **list = (GSList **) user_data; NMIfcfgConnection *connection = NM_IFCFG_CONNECTION (data); const char *udi; GSList *iter; if (!nm_ifcfg_connection_get_unmanaged (connection)) return; udi = nm_ifcfg_connection_get_udi (connection); if (!udi) return; /* Just return if the UDI is already in the list */ for (iter = *list; iter; iter = g_slist_next (iter)) { if (!strcmp ((char *) iter->data, udi)) return; } *list = g_slist_prepend (*list, g_strdup (udi)); } static GSList * get_unmanaged_devices (NMSystemConfigInterface *config) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (config); GSList *list = NULL; g_hash_table_foreach (priv->connections, check_unmanaged, &list); return list; } static void connection_unmanaged_changed (NMIfcfgConnection *connection, GParamSpec *pspec, gpointer user_data) { g_signal_emit_by_name (SC_PLUGIN_IFCFG (user_data), "unmanaged-devices-changed"); } static void connection_ifcfg_changed (NMIfcfgConnection *connection, gpointer user_data) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (user_data); gboolean do_remove = FALSE, do_new = FALSE; const char *path; path = nm_ifcfg_connection_get_filename (connection); g_return_if_fail (path != NULL); connection_changed_handler (plugin, path, connection, &do_remove, &do_new); handle_connection_remove_or_new (plugin, path, connection, do_remove, do_new); } static NMIfcfgConnection * read_one_connection (SCPluginIfcfg *plugin, const char *filename) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); NMIfcfgConnection *connection; GError *error = NULL; gboolean ignore_error = FALSE; PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "parsing %s ... ", filename); connection = nm_ifcfg_connection_new (filename, priv->g_connection, priv->hal_mgr, &error, &ignore_error); if (connection) { NMConnection *wrapped; NMSettingConnection *s_con; const char *cid; wrapped = nm_exported_connection_get_connection (NM_EXPORTED_CONNECTION (connection)); g_assert (wrapped); s_con = NM_SETTING_CONNECTION (nm_connection_get_setting (wrapped, NM_TYPE_SETTING_CONNECTION)); g_assert (s_con); cid = nm_setting_connection_get_id (s_con); g_assert (cid); g_hash_table_insert (priv->connections, (gpointer) nm_ifcfg_connection_get_filename (connection), g_object_ref (connection)); PLUGIN_PRINT (IFCFG_PLUGIN_NAME, " read connection '%s'", cid); if (nm_ifcfg_connection_get_unmanaged (connection)) { PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "Ignoring connection '%s' and its " "device because NM_CONTROLLED was false.", cid); g_signal_emit_by_name (plugin, "unmanaged-devices-changed"); } else { /* Wait for the connection to become unmanaged once it knows the * UDI of it's device, if/when the device gets plugged in. */ g_signal_connect (G_OBJECT (connection), "notify::unmanaged", G_CALLBACK (connection_unmanaged_changed), plugin); } /* watch changes of ifcfg hardlinks */ g_signal_connect (G_OBJECT (connection), "ifcfg-changed", G_CALLBACK (connection_ifcfg_changed), plugin); } else { if (!ignore_error) { PLUGIN_PRINT (IFCFG_PLUGIN_NAME, " error: %s", (error && error->message) ? error->message : "(unknown)"); } g_error_free (error); } return connection; } static gboolean check_suffix (const char *base, const char *tag) { int len, tag_len; g_return_val_if_fail (base != NULL, TRUE); g_return_val_if_fail (tag != NULL, TRUE); len = strlen (base); tag_len = strlen (tag); if ((len > tag_len) && !strcasecmp (base + len - tag_len, tag)) return TRUE; return FALSE; } static gboolean should_ignore_file (const char *filename) { char *base; gboolean ignore = TRUE; g_return_val_if_fail (filename != NULL, TRUE); base = g_path_get_basename (filename); g_return_val_if_fail (base != NULL, TRUE); if ( !strncmp (base, IFCFG_TAG, strlen (IFCFG_TAG)) && !check_suffix (base, BAK_TAG) && !check_suffix (base, TILDE_TAG) && !check_suffix (base, ORIG_TAG) && !check_suffix (base, REJ_TAG)) ignore = FALSE; g_free (base); return ignore; } static void read_connections (SCPluginIfcfg *plugin) { GDir *dir; GError *err = NULL; dir = g_dir_open (IFCFG_DIR, 0, &err); if (dir) { const char *item; while ((item = g_dir_read_name (dir))) { char *full_path; if (should_ignore_file (item)) continue; full_path = g_build_filename (IFCFG_DIR, item, NULL); read_one_connection (plugin, full_path); g_free (full_path); } g_dir_close (dir); } else { PLUGIN_WARN (IFCFG_PLUGIN_NAME, "Can not read directory '%s': %s", IFCFG_DIR, err->message); g_error_free (err); } } /* Monitoring */ static void connection_changed_handler (SCPluginIfcfg *plugin, const char *path, NMIfcfgConnection *connection, gboolean *do_remove, gboolean *do_new) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); NMIfcfgConnection *tmp; GError *error = NULL; GHashTable *settings; gboolean new_unmanaged, old_unmanaged, ignore_error = FALSE; g_return_if_fail (plugin != NULL); g_return_if_fail (path != NULL); g_return_if_fail (connection != NULL); g_return_if_fail (do_remove != NULL); g_return_if_fail (do_new != NULL); PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "updating %s", path); tmp = (NMIfcfgConnection *) nm_ifcfg_connection_new (path, priv->g_connection, priv->hal_mgr, &error, &ignore_error); if (!tmp) { /* errors reading connection; remove it */ if (!ignore_error) { PLUGIN_WARN (IFCFG_PLUGIN_NAME, " error: %s", (error && error->message) ? error->message : "(unknown)"); } g_clear_error (&error); PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "removed %s.", path); *do_remove = TRUE; return; } /* Successfully read connection changes */ old_unmanaged = nm_ifcfg_connection_get_unmanaged (NM_IFCFG_CONNECTION (connection)); new_unmanaged = nm_ifcfg_connection_get_unmanaged (NM_IFCFG_CONNECTION (tmp)); if (new_unmanaged) { if (!old_unmanaged) { /* Unexport the connection by destroying it, then re-creating it as unmanaged */ *do_remove = *do_new = TRUE; } } else { NMConnection *old_wrapped, *new_wrapped; new_wrapped = nm_exported_connection_get_connection (NM_EXPORTED_CONNECTION (tmp)); old_wrapped = nm_exported_connection_get_connection (NM_EXPORTED_CONNECTION (connection)); if (old_unmanaged) { /* no longer unmanaged */ NMSettingConnection *s_con; const char *cid; s_con = NM_SETTING_CONNECTION (nm_connection_get_setting (new_wrapped, NM_TYPE_SETTING_CONNECTION)); g_assert (s_con); cid = nm_setting_connection_get_id (s_con); g_assert (cid); PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "Managing connection '%s' and its " "device because NM_CONTROLLED was true.", cid); g_signal_emit_by_name (plugin, "connection-added", connection); } /* Only update if different */ if (!nm_connection_compare (new_wrapped, old_wrapped, NM_SETTING_COMPARE_FLAG_EXACT)) { settings = nm_connection_to_hash (new_wrapped); if (!nm_ifcfg_connection_update (connection, settings, &error)) { PLUGIN_WARN (IFCFG_PLUGIN_NAME, " error updating: %s", (error && error->message) ? error->message : "(unknown)"); g_clear_error (&error); } g_hash_table_destroy (settings); } /* Update unmanaged status */ g_object_set (connection, "unmanaged", new_unmanaged, NULL); g_signal_emit_by_name (plugin, "unmanaged-devices-changed"); } g_object_unref (tmp); } static void handle_connection_remove_or_new (SCPluginIfcfg *plugin, const char *path, NMIfcfgConnection *connection, gboolean do_remove, gboolean do_new) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); g_return_if_fail (plugin != NULL); g_return_if_fail (path != NULL); if (do_remove) { gboolean unmanaged; g_return_if_fail (connection != NULL); unmanaged = nm_ifcfg_connection_get_unmanaged (connection); g_hash_table_remove (priv->connections, path); nm_exported_connection_signal_removed (NM_EXPORTED_CONNECTION (connection)); /* Emit unmanaged changes _after_ removing the connection */ if (unmanaged) g_signal_emit_by_name (plugin, "unmanaged-devices-changed"); } if (do_new) { connection = read_one_connection (plugin, path); if (connection) { if (!nm_ifcfg_connection_get_unmanaged (NM_IFCFG_CONNECTION (connection))) g_signal_emit_by_name (plugin, "connection-added", connection); } } } static void dir_changed (GFileMonitor *monitor, GFile *file, GFile *other_file, GFileMonitorEvent event_type, gpointer user_data) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (user_data); SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); char *name; NMIfcfgConnection *connection; gboolean do_remove = FALSE, do_new = FALSE; name = g_file_get_path (file); if (should_ignore_file (name)) { g_free (name); return; } connection = g_hash_table_lookup (priv->connections, name); if (!connection) { do_new = TRUE; } else { switch (event_type) { case G_FILE_MONITOR_EVENT_DELETED: PLUGIN_PRINT (IFCFG_PLUGIN_NAME, "removed %s.", name); do_remove = TRUE; break; case G_FILE_MONITOR_EVENT_CREATED: case G_FILE_MONITOR_EVENT_CHANGES_DONE_HINT: /* Update */ connection_changed_handler (plugin, name, connection, &do_remove, &do_new); break; default: break; } } handle_connection_remove_or_new (plugin, name, connection, do_remove, do_new); g_free (name); } static void setup_ifcfg_monitoring (SCPluginIfcfg *plugin) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); GFile *file; GFileMonitor *monitor; priv->connections = g_hash_table_new_full (g_str_hash, g_str_equal, NULL, g_object_unref); file = g_file_new_for_path (IFCFG_DIR "/"); monitor = g_file_monitor_directory (file, G_FILE_MONITOR_NONE, NULL, NULL); g_object_unref (file); if (monitor) { priv->monitor_id = g_signal_connect (monitor, "changed", G_CALLBACK (dir_changed), plugin); priv->monitor = monitor; } } static void hash_to_slist (gpointer key, gpointer value, gpointer user_data) { NMIfcfgConnection *exported = NM_IFCFG_CONNECTION (value); GSList **list = (GSList **) user_data; if (!nm_ifcfg_connection_get_unmanaged (exported)) *list = g_slist_prepend (*list, value); } static GSList * get_connections (NMSystemConfigInterface *config) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (config); SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); GSList *list = NULL; if (!priv->connections) { setup_ifcfg_monitoring (plugin); read_connections (plugin); } g_hash_table_foreach (priv->connections, hash_to_slist, &list); return list; } static gboolean add_connection (NMSystemConfigInterface *config, NMConnection *connection, GError **error) { return writer_new_connection (connection, IFCFG_DIR, NULL, error); } #define SC_NETWORK_FILE SYSCONFDIR"/sysconfig/network" static char * plugin_get_hostname (SCPluginIfcfg *plugin) { shvarFile *network; char *hostname; gboolean ignore_localhost; network = svNewFile (SC_NETWORK_FILE); if (!network) { PLUGIN_WARN (IFCFG_PLUGIN_NAME, "Could not get hostname: failed to read " SC_NETWORK_FILE); return FALSE; } hostname = svGetValue (network, "HOSTNAME", FALSE); ignore_localhost = svTrueValue (network, "NM_IGNORE_HOSTNAME_LOCALHOST", FALSE); if (ignore_localhost) { /* Ignore a hostname of 'localhost' or 'localhost.localdomain' to preserve * 'network' service behavior. */ if (hostname && (!strcmp (hostname, "localhost") || !strcmp (hostname, "localhost.localdomain"))) { g_free (hostname); hostname = NULL; } } svCloseFile (network); return hostname; } static gboolean plugin_set_hostname (SCPluginIfcfg *plugin, const char *hostname) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); shvarFile *network; network = svCreateFile (SC_NETWORK_FILE); if (!network) { PLUGIN_WARN (IFCFG_PLUGIN_NAME, "Could not save hostname: failed to create/open " SC_NETWORK_FILE); return FALSE; } svSetValue (network, "HOSTNAME", hostname, FALSE); svWriteFile (network, 0644); svCloseFile (network); g_free (priv->hostname); priv->hostname = hostname ? g_strdup (hostname) : NULL; return TRUE; } static void sc_network_changed_cb (NMInotifyHelper *ih, struct inotify_event *evt, const char *path, gpointer user_data) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (user_data); SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); char *new_hostname; if (evt->wd != priv->sc_network_wd) return; new_hostname = plugin_get_hostname (plugin); if ( (new_hostname && !priv->hostname) || (!new_hostname && priv->hostname) || (priv->hostname && new_hostname && strcmp (priv->hostname, new_hostname))) { g_free (priv->hostname); priv->hostname = new_hostname; g_object_notify (G_OBJECT (plugin), NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME); } else g_free (new_hostname); } static void init (NMSystemConfigInterface *config, NMSystemConfigHalManager *hal_manager) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (config); SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); priv->hal_mgr = g_object_ref (hal_manager); } static void sc_plugin_ifcfg_init (SCPluginIfcfg *plugin) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); GError *error = NULL; NMInotifyHelper *ih; priv->g_connection = dbus_g_bus_get (DBUS_BUS_SYSTEM, &error); if (!priv->g_connection) { PLUGIN_PRINT (IFCFG_PLUGIN_NAME, " dbus-glib error: %s", error->message ? error->message : "(unknown)"); g_error_free (error); } ih = nm_inotify_helper_get (); priv->ih_event_id = g_signal_connect (ih, "event", G_CALLBACK (sc_network_changed_cb), plugin); priv->sc_network_wd = nm_inotify_helper_add_watch (ih, SC_NETWORK_FILE); priv->hostname = plugin_get_hostname (plugin); } static void dispose (GObject *object) { SCPluginIfcfg *plugin = SC_PLUGIN_IFCFG (object); SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (plugin); NMInotifyHelper *ih; g_object_unref (priv->hal_mgr); ih = nm_inotify_helper_get (); g_signal_handler_disconnect (ih, priv->ih_event_id); if (priv->sc_network_wd >= 0) nm_inotify_helper_remove_watch (ih, priv->sc_network_wd); g_free (priv->hostname); if (priv->g_connection) dbus_g_connection_unref (priv->g_connection); if (priv->connections) g_hash_table_destroy (priv->connections); if (priv->monitor) { if (priv->monitor_id) g_signal_handler_disconnect (priv->monitor, priv->monitor_id); g_file_monitor_cancel (priv->monitor); g_object_unref (priv->monitor); } G_OBJECT_CLASS (sc_plugin_ifcfg_parent_class)->dispose (object); } static void finalize (GObject *object) { G_OBJECT_CLASS (sc_plugin_ifcfg_parent_class)->finalize (object); } static void get_property (GObject *object, guint prop_id, GValue *value, GParamSpec *pspec) { SCPluginIfcfgPrivate *priv = SC_PLUGIN_IFCFG_GET_PRIVATE (object); switch (prop_id) { case NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME: g_value_set_string (value, IFCFG_PLUGIN_NAME); break; case NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO: g_value_set_string (value, IFCFG_PLUGIN_INFO); break; case NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES: g_value_set_uint (value, NM_SYSTEM_CONFIG_INTERFACE_CAP_MODIFY_CONNECTIONS | NM_SYSTEM_CONFIG_INTERFACE_CAP_MODIFY_HOSTNAME); break; case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME: g_value_set_string (value, priv->hostname); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void set_property (GObject *object, guint prop_id, const GValue *value, GParamSpec *pspec) { const char *hostname; switch (prop_id) { case NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME: hostname = g_value_get_string (value); if (hostname && strlen (hostname) < 1) hostname = NULL; plugin_set_hostname (SC_PLUGIN_IFCFG (object), hostname); break; default: G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec); break; } } static void sc_plugin_ifcfg_class_init (SCPluginIfcfgClass *req_class) { GObjectClass *object_class = G_OBJECT_CLASS (req_class); g_type_class_add_private (req_class, sizeof (SCPluginIfcfgPrivate)); object_class->dispose = dispose; object_class->finalize = finalize; object_class->get_property = get_property; object_class->set_property = set_property; g_object_class_override_property (object_class, NM_SYSTEM_CONFIG_INTERFACE_PROP_NAME, NM_SYSTEM_CONFIG_INTERFACE_NAME); g_object_class_override_property (object_class, NM_SYSTEM_CONFIG_INTERFACE_PROP_INFO, NM_SYSTEM_CONFIG_INTERFACE_INFO); g_object_class_override_property (object_class, NM_SYSTEM_CONFIG_INTERFACE_PROP_CAPABILITIES, NM_SYSTEM_CONFIG_INTERFACE_CAPABILITIES); g_object_class_override_property (object_class, NM_SYSTEM_CONFIG_INTERFACE_PROP_HOSTNAME, NM_SYSTEM_CONFIG_INTERFACE_HOSTNAME); } static void system_config_interface_init (NMSystemConfigInterface *system_config_interface_class) { /* interface implementation */ system_config_interface_class->get_connections = get_connections; system_config_interface_class->add_connection = add_connection; system_config_interface_class->get_unmanaged_devices = get_unmanaged_devices; system_config_interface_class->init = init; } G_MODULE_EXPORT GObject * nm_system_config_factory (void) { static SCPluginIfcfg *singleton = NULL; if (!singleton) singleton = SC_PLUGIN_IFCFG (g_object_new (SC_TYPE_PLUGIN_IFCFG, NULL)); else g_object_ref (singleton); return G_OBJECT (singleton); }