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6f44b7f3c6d406a1bda23056c7cad3ded390c02f
NetworkManager/libnm-glib/nm-remote-connection.c
Dan Winship 6f44b7f3c6 all: remove redundant return-if-fail checks 
NM_IS_FOO(x) returns FALSE if x is NULL, so we don't need a separate
(x != NULL) check before it.
2013-03-07 07:32:27 -05:00

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/*
* libnm_glib -- Access network status & information from glib applications
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA.
*
* Copyright (C) 2007 - 2008 Novell, Inc.
* Copyright (C) 2007 - 2011 Red Hat, Inc.
*/
#include <string.h>
#include <gio/gio.h>
#include <NetworkManager.h>
#include <nm-utils.h>
#include <nm-setting-connection.h>
#include "nm-remote-connection.h"
#include "nm-remote-connection-private.h"
#include "nm-dbus-glib-types.h"
#include "nm-glib-compat.h"
#define NM_REMOTE_CONNECTION_BUS "bus"
#define NM_REMOTE_CONNECTION_DBUS_CONNECTION "dbus-connection"
#define NM_REMOTE_CONNECTION_DBUS_PATH "dbus-path"
static void nm_remote_connection_initable_iface_init (GInitableIface *iface);
static void nm_remote_connection_async_initable_iface_init (GAsyncInitableIface *iface);
G_DEFINE_TYPE_WITH_CODE (NMRemoteConnection, nm_remote_connection, NM_TYPE_CONNECTION,
G_IMPLEMENT_INTERFACE (G_TYPE_INITABLE, nm_remote_connection_initable_iface_init);
G_IMPLEMENT_INTERFACE (G_TYPE_ASYNC_INITABLE, nm_remote_connection_async_initable_iface_init);
)
enum {
PROP_0,
PROP_BUS,
PROP_DBUS_CONNECTION,
PROP_DBUS_PATH,
LAST_PROP
};
enum {
UPDATED,
REMOVED,
VISIBLE,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL] = { 0 };
typedef struct {
NMRemoteConnection *self;
DBusGProxyCall *call;
GFunc callback;
gpointer user_data;
} RemoteCall;
typedef struct {
DBusGConnection *bus;
DBusGProxy *proxy;
GSList *calls;
gboolean visible;
} NMRemoteConnectionPrivate;
#define NM_REMOTE_CONNECTION_GET_PRIVATE(o) (G_TYPE_INSTANCE_GET_PRIVATE ((o), NM_TYPE_REMOTE_CONNECTION, NMRemoteConnectionPrivate))
/****************************************************************/
static void
remote_call_complete (NMRemoteConnection *self, RemoteCall *call)
{
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
priv->calls = g_slist_remove (priv->calls, call);
/* Don't need to cancel it since this function should only be called from
* the dispose handler (where the proxy will be destroyed immediately after)
* or from the call's completion callback.
*/
memset (call, 0, sizeof (RemoteCall));
g_free (call);
}
static void
update_cb (DBusGProxy *proxy, DBusGProxyCall *proxy_call, gpointer user_data)
{
RemoteCall *call = user_data;
NMRemoteConnectionCommitFunc func = (NMRemoteConnectionCommitFunc) call->callback;
GError *error = NULL;
dbus_g_proxy_end_call (proxy, proxy_call, &error,
G_TYPE_INVALID);
if (func != NULL)
(*func)(call->self, error, call->user_data);
g_clear_error (&error);
remote_call_complete (call->self, call);
}
/**
* nm_remote_connection_commit_changes:
* @connection: the #NMRemoteConnection
* @callback: (scope async) (allow-none): a function to be called when the
* commit completes
* @user_data: (closure): caller-specific data to be passed to @callback
*
* Save any local changes to the settings and properties of this connection and
* save them in the settings service.
**/
void
nm_remote_connection_commit_changes (NMRemoteConnection *self,
NMRemoteConnectionCommitFunc callback,
gpointer user_data)
{
NMRemoteConnectionPrivate *priv;
GHashTable *settings = NULL;
RemoteCall *call;
g_return_if_fail (NM_IS_REMOTE_CONNECTION (self));
g_return_if_fail (callback != NULL);
priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
call = g_malloc0 (sizeof (RemoteCall));
call->self = self;
call->callback = (GFunc) callback;
call->user_data = user_data;
settings = nm_connection_to_hash (NM_CONNECTION (self), NM_SETTING_HASH_FLAG_ALL);
call->call = dbus_g_proxy_begin_call (priv->proxy, "Update",
update_cb, call, NULL,
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, settings,
G_TYPE_INVALID);
g_assert (call->call);
priv->calls = g_slist_append (priv->calls, call);
g_hash_table_destroy (settings);
}
static void
delete_cb (DBusGProxy *proxy, DBusGProxyCall *proxy_call, gpointer user_data)
{
RemoteCall *call = user_data;
NMRemoteConnectionDeleteFunc func = (NMRemoteConnectionDeleteFunc) call->callback;
GError *error = NULL;
dbus_g_proxy_end_call (proxy, proxy_call, &error,
G_TYPE_INVALID);
if (func != NULL)
(*func)(call->self, error, call->user_data);
g_clear_error (&error);
remote_call_complete (call->self, call);
}
/**
* nm_remote_connection_delete:
* @connection: the #NMRemoteConnection
* @callback: (scope async) (allow-none): a function to be called when the delete completes
* @user_data: (closure): caller-specific data to be passed to @callback
*
* Delete the connection.
**/
void
nm_remote_connection_delete (NMRemoteConnection *self,
NMRemoteConnectionDeleteFunc callback,
gpointer user_data)
{
NMRemoteConnectionPrivate *priv;
RemoteCall *call;
g_return_if_fail (NM_IS_REMOTE_CONNECTION (self));
priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
call = g_malloc0 (sizeof (RemoteCall));
call->self = self;
call->callback = (GFunc) callback;
call->user_data = user_data;
call->call = dbus_g_proxy_begin_call (priv->proxy, "Delete",
delete_cb, call, NULL,
G_TYPE_INVALID);
g_assert (call->call);
priv->calls = g_slist_append (priv->calls, call);
}
static void
get_secrets_cb (DBusGProxy *proxy, DBusGProxyCall *proxy_call, gpointer user_data)
{
RemoteCall *call = user_data;
NMRemoteConnectionGetSecretsFunc func = (NMRemoteConnectionGetSecretsFunc) call->callback;
GHashTable *secrets;
GError *error = NULL;
dbus_g_proxy_end_call (proxy, proxy_call, &error,
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &secrets,
G_TYPE_INVALID);
(*func)(call->self, error ? NULL : secrets, error, call->user_data);
g_clear_error (&error);
remote_call_complete (call->self, call);
}
/**
* nm_remote_connection_get_secrets:
* @connection: the #NMRemoteConnection
* @setting_name: the #NMSetting object name to get secrets for
* @callback: (scope async): a function to be called when the update completes;
* must not be NULL
* @user_data: (closure): caller-specific data to be passed to @callback
*
* Request the connection's secrets.
**/
void
nm_remote_connection_get_secrets (NMRemoteConnection *self,
const char *setting_name,
NMRemoteConnectionGetSecretsFunc callback,
gpointer user_data)
{
NMRemoteConnectionPrivate *priv;
RemoteCall *call;
g_return_if_fail (NM_IS_REMOTE_CONNECTION (self));
g_return_if_fail (callback != NULL);
priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
call = g_malloc0 (sizeof (RemoteCall));
call->self = self;
call->callback = (GFunc) callback;
call->user_data = user_data;
call->call = dbus_g_proxy_begin_call (priv->proxy, "GetSecrets",
get_secrets_cb, call, NULL,
G_TYPE_STRING, setting_name,
G_TYPE_INVALID);
g_assert (call->call);
priv->calls = g_slist_append (priv->calls, call);
}
/****************************************************************/
static void
replace_settings (NMRemoteConnection *self, GHashTable *new_settings)
{
GError *error = NULL;
if (nm_connection_replace_settings (NM_CONNECTION (self), new_settings, &error))
g_signal_emit (self, signals[UPDATED], 0, new_settings);
else {
g_warning ("%s: error updating connection %s settings: (%d) %s",
__func__,
nm_connection_get_path (NM_CONNECTION (self)),
error ? error->code : -1,
(error && error->message) ? error->message : "(unknown)");
g_clear_error (&error);
g_signal_emit (self, signals[REMOVED], 0);
}
}
static void
updated_get_settings_cb (DBusGProxy *proxy,
DBusGProxyCall *call,
gpointer user_data)
{
NMRemoteConnection *self = user_data;
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
GHashTable *new_settings;
GError *error = NULL;
dbus_g_proxy_end_call (proxy, call, &error,
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &new_settings,
G_TYPE_INVALID);
if (error) {
GHashTable *hash;
g_error_free (error);
/* Connection is no longer visible to this user. Let the settings
* service handle this via 'visible'. The settings service will emit
* the "removed" signal for us since it handles the lifetime of this
* object.
*/
hash = g_hash_table_new (g_str_hash, g_str_equal);
nm_connection_replace_settings (NM_CONNECTION (self), hash, NULL);
g_hash_table_destroy (hash);
priv->visible = FALSE;
g_signal_emit (self, signals[VISIBLE], 0, FALSE);
} else {
replace_settings (self, new_settings);
g_hash_table_destroy (new_settings);
/* Settings service will handle announcing the connection to clients */
if (priv->visible == FALSE) {
priv->visible = TRUE;
g_signal_emit (self, signals[VISIBLE], 0, TRUE);
}
}
}
static void
updated_cb (DBusGProxy *proxy, gpointer user_data)
{
NMRemoteConnection *self = NM_REMOTE_CONNECTION (user_data);
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (self);
/* The connection got updated; request the replacement settings */
dbus_g_proxy_begin_call (priv->proxy, "GetSettings",
updated_get_settings_cb, self, NULL,
G_TYPE_INVALID);
}
static void
removed_cb (DBusGProxy *proxy, gpointer user_data)
{
g_signal_emit (G_OBJECT (user_data), signals[REMOVED], 0);
}
/****************************************************************/
/**
* nm_remote_connection_new:
* @bus: a valid and connected D-Bus connection
* @path: the D-Bus path of the connection as exported by the settings service
*
* Creates a new object representing the remote connection.
*
* Returns: the new remote connection object on success, or %NULL on failure
**/
NMRemoteConnection *
nm_remote_connection_new (DBusGConnection *bus,
const char *path)
{
g_return_val_if_fail (bus != NULL, NULL);
g_return_val_if_fail (path != NULL, NULL);
return (NMRemoteConnection *) g_object_new (NM_TYPE_REMOTE_CONNECTION,
NM_REMOTE_CONNECTION_BUS, bus,
NM_CONNECTION_PATH, path,
NULL);
}
static void
constructed (GObject *object)
{
NMRemoteConnectionPrivate *priv;
priv = NM_REMOTE_CONNECTION_GET_PRIVATE (object);
g_assert (priv->bus);
g_assert (nm_connection_get_path (NM_CONNECTION (object)));
priv->proxy = dbus_g_proxy_new_for_name (priv->bus,
NM_DBUS_SERVICE,
nm_connection_get_path (NM_CONNECTION (object)),
NM_DBUS_IFACE_SETTINGS_CONNECTION);
g_assert (priv->proxy);
dbus_g_proxy_set_default_timeout (priv->proxy, G_MAXINT);
dbus_g_proxy_add_signal (priv->proxy, "Updated", G_TYPE_INVALID);
dbus_g_proxy_connect_signal (priv->proxy, "Updated", G_CALLBACK (updated_cb), object, NULL);
dbus_g_proxy_add_signal (priv->proxy, "Removed", G_TYPE_INVALID);
dbus_g_proxy_connect_signal (priv->proxy, "Removed", G_CALLBACK (removed_cb), object, NULL);
}
static gboolean
init_sync (GInitable *initable, GCancellable *cancellable, GError **error)
{
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (initable);
GHashTable *settings;
if (!dbus_g_proxy_call (priv->proxy, "GetSettings", error,
G_TYPE_INVALID,
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &settings,
G_TYPE_INVALID))
return FALSE;
priv->visible = TRUE;
replace_settings (NM_REMOTE_CONNECTION (initable), settings);
g_hash_table_destroy (settings);
return TRUE;
}
typedef struct {
NMRemoteConnection *connection;
GSimpleAsyncResult *result;
} NMRemoteConnectionInitData;
static void
init_get_settings_cb (DBusGProxy *proxy,
DBusGProxyCall *call,
gpointer user_data)
{
NMRemoteConnectionInitData *init_data = user_data;
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (init_data->connection);
GHashTable *settings;
GError *error = NULL;
dbus_g_proxy_end_call (proxy, call, &error,
DBUS_TYPE_G_MAP_OF_MAP_OF_VARIANT, &settings,
G_TYPE_INVALID);
if (error) {
g_simple_async_result_take_error (init_data->result, error);
} else {
priv->visible = TRUE;
replace_settings (init_data->connection, settings);
g_hash_table_destroy (settings);
g_simple_async_result_set_op_res_gboolean (init_data->result, TRUE);
}
g_simple_async_result_complete (init_data->result);
g_slice_free (NMRemoteConnectionInitData, init_data);
}
static void
init_async (GAsyncInitable *initable, int io_priority,
GCancellable *cancellable, GAsyncReadyCallback callback,
gpointer user_data)
{
NMRemoteConnectionInitData *init_data;
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (initable);
init_data = g_slice_new0 (NMRemoteConnectionInitData);
init_data->connection = NM_REMOTE_CONNECTION (initable);
init_data->result = g_simple_async_result_new (G_OBJECT (initable), callback,
user_data, init_async);
dbus_g_proxy_begin_call (priv->proxy, "GetSettings",
init_get_settings_cb, init_data, NULL,
G_TYPE_INVALID);
}
static gboolean
init_finish (GAsyncInitable *initable, GAsyncResult *result, GError **error)
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
if (g_simple_async_result_propagate_error (simple, error))
return FALSE;
else
return TRUE;
}
static void
nm_remote_connection_init (NMRemoteConnection *self)
{
}
static GObject *
constructor (GType type, guint n_construct_properties,
GObjectConstructParam *construct_properties)
{
static GParamSpec *nm_connection_path = NULL;
static GParamSpec *nm_remote_connection_dbus_path = NULL;
int i, path_index = -1, dbus_path_index = -1;
if (!nm_connection_path) {
nm_connection_path =
g_object_class_find_property (g_type_class_peek (NM_TYPE_CONNECTION),
NM_CONNECTION_PATH);
nm_remote_connection_dbus_path =
g_object_class_find_property (g_type_class_peek (NM_TYPE_REMOTE_CONNECTION),
NM_REMOTE_CONNECTION_DBUS_PATH);
}
/* Find the two properties */
for (i = 0; i < n_construct_properties; i++) {
if (construct_properties[i].pspec == nm_connection_path)
path_index = i;
else if (construct_properties[i].pspec == nm_remote_connection_dbus_path)
dbus_path_index = i;
}
g_assert (path_index != -1 && dbus_path_index != -1);
/* If NMRemoteConnection:dbus-path is set, and NMConnection:path
* is not, then copy the value of the former to the latter.
*/
if (g_value_get_string (construct_properties[dbus_path_index].value) &&
!g_value_get_string (construct_properties[path_index].value))
construct_properties[path_index].value = construct_properties[dbus_path_index].value;
return G_OBJECT_CLASS (nm_remote_connection_parent_class)->
constructor (type, n_construct_properties, construct_properties);
}
static void
set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec)
{
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (object);
switch (prop_id) {
case PROP_BUS:
case PROP_DBUS_CONNECTION:
/* Construct only */
if (g_value_get_boxed (value))
priv->bus = dbus_g_connection_ref ((DBusGConnection *) g_value_get_boxed (value));
break;
case PROP_DBUS_PATH:
/* Don't need to do anything; see constructor(). */
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
dispose (GObject *object)
{
NMRemoteConnection *self = NM_REMOTE_CONNECTION (object);
NMRemoteConnectionPrivate *priv = NM_REMOTE_CONNECTION_GET_PRIVATE (object);
while (g_slist_length (priv->calls))
remote_call_complete (self, priv->calls->data);
g_clear_object (&priv->proxy);
if (priv->bus) {
dbus_g_connection_unref (priv->bus);
priv->bus = NULL;
}
G_OBJECT_CLASS (nm_remote_connection_parent_class)->dispose (object);
}
static void
nm_remote_connection_class_init (NMRemoteConnectionClass *remote_class)
{
GObjectClass *object_class = G_OBJECT_CLASS (remote_class);
g_type_class_add_private (object_class, sizeof (NMRemoteConnectionPrivate));
/* virtual methods */
object_class->constructor = constructor;
object_class->set_property = set_property;
object_class->dispose = dispose;
object_class->constructed = constructed;
/* Properties */
g_object_class_install_property
(object_class, PROP_BUS,
g_param_spec_boxed (NM_REMOTE_CONNECTION_BUS,
"DBusGConnection",
"DBusGConnection",
DBUS_TYPE_G_CONNECTION,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
/* These are needed so _nm_object_create() can create NMRemoteConnections */
g_object_class_install_property
(object_class, PROP_DBUS_CONNECTION,
g_param_spec_boxed (NM_REMOTE_CONNECTION_DBUS_CONNECTION,
"DBusGConnection",
"DBusGConnection",
DBUS_TYPE_G_CONNECTION,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
g_object_class_install_property
(object_class, PROP_DBUS_PATH,
g_param_spec_string (NM_REMOTE_CONNECTION_DBUS_PATH,
"Object Path",
"DBus Object Path",
NULL,
G_PARAM_WRITABLE | G_PARAM_CONSTRUCT_ONLY));
/* Signals */
/**
* NMRemoteConnection::updated:
* @connection: a #NMConnection
*
* This signal is emitted when a connection changes, and it is
* still visible to the user.
*/
signals[UPDATED] =
g_signal_new (NM_REMOTE_CONNECTION_UPDATED,
G_TYPE_FROM_CLASS (remote_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (NMRemoteConnectionClass, updated),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* NMRemoteConnection::removed:
* @connection: a #NMConnection
*
* This signal is emitted when a connection is either deleted or becomes
* invisible to the current user.
*/
signals[REMOVED] =
g_signal_new (NM_REMOTE_CONNECTION_REMOVED,
G_TYPE_FROM_CLASS (remote_class),
G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (NMRemoteConnectionClass, removed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/* Private signal */
signals[VISIBLE] =
g_signal_new ("visible",
G_TYPE_FROM_CLASS (remote_class),
G_SIGNAL_RUN_FIRST,
0, NULL, NULL,
g_cclosure_marshal_VOID__BOOLEAN,
G_TYPE_NONE, 1, G_TYPE_BOOLEAN);
}
static void
nm_remote_connection_initable_iface_init (GInitableIface *iface)
{
iface->init = init_sync;
}
static void
nm_remote_connection_async_initable_iface_init (GAsyncInitableIface *iface)
{
iface->init_async = init_async;
iface->init_finish = init_finish;
}
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