mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
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e761d230c3
This is not merely cosmetic. I will need the obj_properties array to lookup GParamSpec by their PROP_* enum value. The alternative would be lookup by name, which is more expensive.
479 lines
15 KiB
C
479 lines
15 KiB
C
// SPDX-License-Identifier: LGPL-2.1+
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/*
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* Copyright (C) 2008 Novell, Inc.
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* Copyright (C) 2009 - 2012 Red Hat, Inc.
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*/
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#include "nm-default.h"
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#include "nm-remote-settings.h"
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#include "c-list/src/c-list.h"
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#include "nm-dbus-interface.h"
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#include "nm-connection.h"
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#include "nm-client.h"
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#include "nm-remote-connection.h"
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#include "nm-remote-connection-private.h"
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#include "nm-object-private.h"
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#include "nm-dbus-helpers.h"
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#include "nm-core-internal.h"
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#include "introspection/org.freedesktop.NetworkManager.Settings.h"
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G_DEFINE_TYPE (NMRemoteSettings, nm_remote_settings, NM_TYPE_OBJECT)
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#define NM_REMOTE_SETTINGS_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_REMOTE_SETTINGS, NMRemoteSettingsPrivate))
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typedef struct {
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NMDBusSettings *proxy;
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GPtrArray *all_connections;
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GPtrArray *visible_connections;
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/* AddConnectionInfo objects that are waiting for the connection to become initialized */
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CList add_lst_head;
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char *hostname;
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gboolean can_modify;
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} NMRemoteSettingsPrivate;
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NM_GOBJECT_PROPERTIES_DEFINE_BASE (
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PROP_CONNECTIONS,
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PROP_HOSTNAME,
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PROP_CAN_MODIFY,
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);
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/* Signals */
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enum {
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CONNECTION_ADDED,
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CONNECTION_REMOVED,
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LAST_SIGNAL
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};
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static guint signals[LAST_SIGNAL] = { 0 };
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/*****************************************************************************/
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typedef struct {
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CList add_lst;
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NMRemoteSettings *self;
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GTask *task;
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char *connection_path;
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GVariant *extra_results;
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gulong cancellable_id;
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} AddConnectionInfo;
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static AddConnectionInfo *
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_add_connection_info_find (NMRemoteSettings *self, const char *connection_path)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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AddConnectionInfo *info;
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c_list_for_each_entry (info, &priv->add_lst_head, add_lst) {
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if (nm_streq (info->connection_path, connection_path))
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return info;
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}
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return NULL;
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}
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static void
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_add_connection_info_complete (AddConnectionInfo *info,
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NMRemoteConnection *connection,
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GError *error_take)
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{
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nm_assert (info);
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c_list_unlink_stale (&info->add_lst);
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nm_clear_g_signal_handler (g_task_get_cancellable (info->task), &info->cancellable_id);
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if (error_take)
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g_task_return_error (info->task, error_take);
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else {
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NMAddConnectionResultData *result_info;
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result_info = g_slice_new (NMAddConnectionResultData);
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*result_info = (NMAddConnectionResultData) {
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.connection = g_object_ref (connection),
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.extra_results = g_steal_pointer (&info->extra_results),
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};
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g_task_return_pointer (info->task, result_info, (GDestroyNotify) nm_add_connection_result_data_free);
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}
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g_object_unref (info->task);
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g_object_unref (info->self);
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g_free (info->connection_path);
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nm_g_variant_unref (info->extra_results);
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nm_g_slice_free (info);
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}
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static void
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_wait_for_connection_cancelled_cb (GCancellable *cancellable,
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AddConnectionInfo *info)
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{
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_add_connection_info_complete (info,
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NULL,
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g_error_new_literal (G_IO_ERROR,
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G_IO_ERROR_CANCELLED,
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"Operation was cancelled"));
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}
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typedef const char * (*ConnectionStringGetter) (NMConnection *);
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static NMRemoteConnection *
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get_connection_by_string (NMRemoteSettings *settings,
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const char *string,
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ConnectionStringGetter get_comparison_string)
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{
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NMRemoteSettingsPrivate *priv;
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NMConnection *candidate;
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int i;
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priv = NM_REMOTE_SETTINGS_GET_PRIVATE (settings);
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for (i = 0; i < priv->visible_connections->len; i++) {
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candidate = priv->visible_connections->pdata[i];
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if (!g_strcmp0 (string, get_comparison_string (candidate)))
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return NM_REMOTE_CONNECTION (candidate);
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}
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return NULL;
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}
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NMRemoteConnection *
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nm_remote_settings_get_connection_by_id (NMRemoteSettings *settings, const char *id)
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{
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g_return_val_if_fail (NM_IS_REMOTE_SETTINGS (settings), NULL);
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g_return_val_if_fail (id != NULL, NULL);
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return get_connection_by_string (settings, id, nm_connection_get_id);
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}
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NMRemoteConnection *
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nm_remote_settings_get_connection_by_path (NMRemoteSettings *settings, const char *path)
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{
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g_return_val_if_fail (NM_IS_REMOTE_SETTINGS (settings), NULL);
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g_return_val_if_fail (path != NULL, NULL);
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return get_connection_by_string (settings, path, nm_connection_get_path);
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}
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NMRemoteConnection *
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nm_remote_settings_get_connection_by_uuid (NMRemoteSettings *settings, const char *uuid)
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{
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g_return_val_if_fail (NM_IS_REMOTE_SETTINGS (settings), NULL);
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g_return_val_if_fail (uuid != NULL, NULL);
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return get_connection_by_string (settings, uuid, nm_connection_get_uuid);
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}
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static void
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connection_visible_changed (GObject *object,
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GParamSpec *pspec,
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gpointer user_data)
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{
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NMRemoteConnection *connection = NM_REMOTE_CONNECTION (object);
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NMRemoteSettings *self = NM_REMOTE_SETTINGS (user_data);
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if (nm_remote_connection_get_visible (connection))
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g_signal_emit (self, signals[CONNECTION_ADDED], 0, connection);
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else
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g_signal_emit (self, signals[CONNECTION_REMOVED], 0, connection);
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}
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static void
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cleanup_connection (NMRemoteSettings *self,
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NMRemoteConnection *remote)
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{
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g_signal_handlers_disconnect_by_func (remote, G_CALLBACK (connection_visible_changed), self);
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}
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static void
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connection_removed (NMRemoteSettings *self,
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NMRemoteConnection *remote)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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gboolean still_exists = FALSE;
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int i;
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/* Check if the connection was actually removed or if it just turned invisible. */
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for (i = 0; i < priv->all_connections->len; i++) {
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if (remote == priv->all_connections->pdata[i]) {
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still_exists = TRUE;
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break;
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}
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}
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if (!still_exists)
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cleanup_connection (self, remote);
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/* Allow the signal to propagate if and only if @remote was in visible_connections */
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if (!g_ptr_array_remove (priv->visible_connections, remote))
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g_signal_stop_emission (self, signals[CONNECTION_REMOVED], 0);
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}
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static void
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connection_added (NMRemoteSettings *self,
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NMRemoteConnection *remote)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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AddConnectionInfo *info;
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const char *path;
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if (!g_signal_handler_find (remote, G_SIGNAL_MATCH_FUNC | G_SIGNAL_MATCH_DATA, 0, 0, NULL,
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G_CALLBACK (connection_visible_changed), self)) {
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g_signal_connect (remote,
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"notify::" NM_REMOTE_CONNECTION_VISIBLE,
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G_CALLBACK (connection_visible_changed),
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self);
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}
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if (nm_remote_connection_get_visible (remote))
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g_ptr_array_add (priv->visible_connections, remote);
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else
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g_signal_stop_emission (self, signals[CONNECTION_ADDED], 0);
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/* FIXME: this doesn't look right. Why does it not care about whether the
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* connection is visible? Anyway, this will be reworked. */
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path = nm_connection_get_path (NM_CONNECTION (remote));
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info = path
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? _add_connection_info_find (self, path)
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: NULL;
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if (info)
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_add_connection_info_complete (info, remote, NULL);
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}
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static void
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object_creation_failed (NMObject *object,
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const char *failed_path)
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{
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NMRemoteSettings *self = NM_REMOTE_SETTINGS (object);
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AddConnectionInfo *info;
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info = _add_connection_info_find (self, failed_path);
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if (!info)
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return;
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_add_connection_info_complete (info,
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NULL,
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g_error_new_literal (NM_CLIENT_ERROR,
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NM_CLIENT_ERROR_OBJECT_CREATION_FAILED,
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_("Connection removed before it was initialized")));
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}
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const GPtrArray *
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nm_remote_settings_get_connections (NMRemoteSettings *settings)
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{
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g_return_val_if_fail (NM_IS_REMOTE_SETTINGS (settings), NULL);
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return NM_REMOTE_SETTINGS_GET_PRIVATE (settings)->visible_connections;
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}
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void
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nm_remote_settings_wait_for_connection (NMRemoteSettings *self,
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const char *connection_path,
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GVariant *extra_results_take,
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GTask *task_take)
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{
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NMRemoteSettingsPrivate *priv;
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gs_unref_object GTask *task = task_take;
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gs_unref_variant GVariant *extra_results = extra_results_take;
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GCancellable *cancellable;
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AddConnectionInfo *info;
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priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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/* FIXME: there is no timeout for how long we wait. But this entire
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* code will be reworked, also that we have a suitable GMainContext
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* where we can schedule the timeout (we shouldn't use g_main_context_default()). */
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info = g_slice_new (AddConnectionInfo);
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*info = (AddConnectionInfo) {
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.self = g_object_ref (self),
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.connection_path = g_strdup (connection_path),
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.task = g_steal_pointer (&task),
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.extra_results = g_steal_pointer (&extra_results),
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};
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c_list_link_tail (&priv->add_lst_head, &info->add_lst);
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cancellable = g_task_get_cancellable (info->task);
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/* On success, we still have to wait until the connection is fully
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* initialized before calling the callback.
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*/
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if (cancellable) {
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gulong id;
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id = g_cancellable_connect (cancellable,
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G_CALLBACK (_wait_for_connection_cancelled_cb),
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info,
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NULL);
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if (id == 0) {
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/* the callback was invoked synchronously, which destroyed @info.
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* We must not touch @info anymore. */
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} else
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info->cancellable_id = id;
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}
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/* FIXME: OK, we just assume the the connection is here, and that we are bound
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* to get the suitable signal when the connection is fully initalized (or failed).
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* Obviously, that needs reworking. */
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}
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/*****************************************************************************/
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static void
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nm_remote_settings_init (NMRemoteSettings *self)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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c_list_init (&priv->add_lst_head);
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priv->all_connections = g_ptr_array_new ();
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priv->visible_connections = g_ptr_array_new ();
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}
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static void
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init_dbus (NMObject *object)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (object);
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const NMPropertiesInfo property_info[] = {
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{ NM_REMOTE_SETTINGS_CONNECTIONS, &priv->all_connections, NULL, NM_TYPE_REMOTE_CONNECTION, "connection" },
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{ NM_REMOTE_SETTINGS_HOSTNAME, &priv->hostname },
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{ NM_REMOTE_SETTINGS_CAN_MODIFY, &priv->can_modify },
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{ NULL },
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};
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NM_OBJECT_CLASS (nm_remote_settings_parent_class)->init_dbus (object);
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priv->proxy = NMDBUS_SETTINGS (_nm_object_get_proxy (object, NM_DBUS_INTERFACE_SETTINGS));
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_nm_object_register_properties (object,
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NM_DBUS_INTERFACE_SETTINGS,
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property_info);
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}
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static GObject *
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constructor (GType type,
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guint n_construct_params,
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GObjectConstructParam *construct_params)
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{
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guint i;
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const char *dbus_path;
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/* Fill in the right D-Bus path if none was specified */
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for (i = 0; i < n_construct_params; i++) {
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if (strcmp (construct_params[i].pspec->name, NM_OBJECT_PATH) == 0) {
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dbus_path = g_value_get_string (construct_params[i].value);
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if (dbus_path == NULL) {
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g_value_set_static_string (construct_params[i].value, NM_DBUS_PATH_SETTINGS);
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} else {
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if (!g_variant_is_object_path (dbus_path)) {
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g_warning ("Passed D-Bus object path '%s' is invalid; using default '%s' instead",
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dbus_path, NM_DBUS_PATH);
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g_value_set_static_string (construct_params[i].value, NM_DBUS_PATH_SETTINGS);
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}
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}
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break;
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}
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}
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return G_OBJECT_CLASS (nm_remote_settings_parent_class)->constructor (type,
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n_construct_params,
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construct_params);
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}
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static void
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dispose (GObject *object)
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{
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NMRemoteSettings *self = NM_REMOTE_SETTINGS (object);
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (self);
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guint i;
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if (priv->all_connections) {
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for (i = 0; i < priv->all_connections->len; i++)
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cleanup_connection (self, priv->all_connections->pdata[i]);
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g_clear_pointer (&priv->all_connections, g_ptr_array_unref);
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}
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g_clear_pointer (&priv->visible_connections, g_ptr_array_unref);
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g_clear_pointer (&priv->hostname, g_free);
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g_clear_object (&priv->proxy);
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G_OBJECT_CLASS (nm_remote_settings_parent_class)->dispose (object);
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}
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static void
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get_property (GObject *object, guint prop_id,
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GValue *value, GParamSpec *pspec)
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{
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NMRemoteSettingsPrivate *priv = NM_REMOTE_SETTINGS_GET_PRIVATE (object);
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switch (prop_id) {
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case PROP_CONNECTIONS:
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g_value_take_boxed (value, _nm_utils_copy_object_array (priv->visible_connections));
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break;
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case PROP_HOSTNAME:
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g_value_set_string (value, priv->hostname);
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break;
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case PROP_CAN_MODIFY:
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g_value_set_boolean (value, priv->can_modify);
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break;
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default:
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G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
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break;
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}
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}
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static void
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nm_remote_settings_class_init (NMRemoteSettingsClass *class)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (class);
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NMObjectClass *nm_object_class = NM_OBJECT_CLASS (class);
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g_type_class_add_private (class, sizeof (NMRemoteSettingsPrivate));
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object_class->get_property = get_property;
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object_class->constructor = constructor;
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object_class->dispose = dispose;
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nm_object_class->init_dbus = init_dbus;
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nm_object_class->object_creation_failed = object_creation_failed;
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class->connection_added = connection_added;
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class->connection_removed = connection_removed;
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obj_properties[PROP_CONNECTIONS] =
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g_param_spec_boxed (NM_REMOTE_SETTINGS_CONNECTIONS, "", "",
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G_TYPE_PTR_ARRAY,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS);
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obj_properties[PROP_HOSTNAME] =
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g_param_spec_string (NM_REMOTE_SETTINGS_HOSTNAME, "", "",
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NULL,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS);
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obj_properties[PROP_CAN_MODIFY] =
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g_param_spec_boolean (NM_REMOTE_SETTINGS_CAN_MODIFY, "", "",
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FALSE,
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G_PARAM_READABLE |
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G_PARAM_STATIC_STRINGS);
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g_object_class_install_properties (object_class, _PROPERTY_ENUMS_LAST, obj_properties);
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signals[CONNECTION_ADDED] =
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g_signal_new (NM_REMOTE_SETTINGS_CONNECTION_ADDED,
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (NMRemoteSettingsClass, connection_added),
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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NM_TYPE_REMOTE_CONNECTION);
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signals[CONNECTION_REMOVED] =
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g_signal_new (NM_REMOTE_SETTINGS_CONNECTION_REMOVED,
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G_OBJECT_CLASS_TYPE (object_class),
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G_SIGNAL_RUN_FIRST,
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G_STRUCT_OFFSET (NMRemoteSettingsClass, connection_removed),
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NULL, NULL, NULL,
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G_TYPE_NONE, 1,
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NM_TYPE_REMOTE_CONNECTION);
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}
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