mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager
synced 2024-10-07 08:40:59 +00:00
8bace23beb
- All internal source files (except "examples", which are not internal) should include "config.h" first. As also all internal source files should include "nm-default.h", let "config.h" be included by "nm-default.h" and include "nm-default.h" as first in every source file. We already wanted to include "nm-default.h" before other headers because it might contains some fixes (like "nm-glib.h" compatibility) that is required first. - After including "nm-default.h", we optinally allow for including the corresponding header file for the source file at hand. The idea is to ensure that each header file is self contained. - Don't include "config.h" or "nm-default.h" in any header file (except "nm-sd-adapt.h"). Public headers anyway must not include these headers, and internal headers are never included after "nm-default.h", as of the first previous point. - Include all internal headers with quotes instead of angle brackets. In practice it doesn't matter, because in our public headers we must include other headers with angle brackets. As we use our public headers also to compile our interal source files, effectively the result must be the same. Still do it for consistency. - Except for <config.h> itself. Include it with angle brackets as suggested by https://www.gnu.org/software/autoconf/manual/autoconf.html#Configuration-Headers
331 lines
10 KiB
C
331 lines
10 KiB
C
/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
|
|
/*
|
|
* 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 2013 Red Hat, Inc.
|
|
*/
|
|
|
|
#include "nm-default.h"
|
|
|
|
#include "nm-dbus-helpers.h"
|
|
|
|
#include <string.h>
|
|
|
|
#include "nm-dbus-interface.h"
|
|
|
|
static GBusType nm_bus = G_BUS_TYPE_SYSTEM;
|
|
|
|
GBusType
|
|
_nm_dbus_bus_type (void)
|
|
{
|
|
static gsize init_value = 0;
|
|
|
|
if (g_once_init_enter (&init_value)) {
|
|
if (g_getenv ("LIBNM_USE_SESSION_BUS"))
|
|
nm_bus = G_BUS_TYPE_SESSION;
|
|
|
|
g_once_init_leave (&init_value, 1);
|
|
}
|
|
|
|
return nm_bus;
|
|
}
|
|
|
|
GDBusConnection *
|
|
_nm_dbus_new_connection (GCancellable *cancellable, GError **error)
|
|
{
|
|
return g_bus_get_sync (_nm_dbus_bus_type (), cancellable, error);
|
|
}
|
|
|
|
static void
|
|
new_connection_async_got_system (GObject *source, GAsyncResult *result, gpointer user_data)
|
|
{
|
|
GSimpleAsyncResult *simple = user_data;
|
|
GDBusConnection *connection;
|
|
GError *error = NULL;
|
|
|
|
connection = g_bus_get_finish (result, &error);
|
|
if (connection)
|
|
g_simple_async_result_set_op_res_gpointer (simple, connection, g_object_unref);
|
|
else
|
|
g_simple_async_result_take_error (simple, error);
|
|
|
|
g_simple_async_result_complete (simple);
|
|
g_object_unref (simple);
|
|
}
|
|
|
|
void
|
|
_nm_dbus_new_connection_async (GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GSimpleAsyncResult *simple;
|
|
|
|
simple = g_simple_async_result_new (NULL, callback, user_data, _nm_dbus_new_connection_async);
|
|
|
|
g_bus_get (_nm_dbus_bus_type (),
|
|
cancellable,
|
|
new_connection_async_got_system, simple);
|
|
}
|
|
|
|
GDBusConnection *
|
|
_nm_dbus_new_connection_finish (GAsyncResult *result,
|
|
GError **error)
|
|
{
|
|
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
|
|
|
|
if (g_simple_async_result_propagate_error (simple, error))
|
|
return NULL;
|
|
|
|
return g_object_ref (g_simple_async_result_get_op_res_gpointer (simple));
|
|
}
|
|
|
|
gboolean
|
|
_nm_dbus_is_connection_private (GDBusConnection *connection)
|
|
{
|
|
return g_dbus_connection_get_unique_name (connection) == NULL;
|
|
}
|
|
|
|
static GHashTable *proxy_types;
|
|
|
|
#undef _nm_dbus_register_proxy_type
|
|
void
|
|
_nm_dbus_register_proxy_type (const char *interface,
|
|
GType proxy_type)
|
|
{
|
|
if (!proxy_types)
|
|
proxy_types = g_hash_table_new (g_str_hash, g_str_equal);
|
|
|
|
g_assert (g_hash_table_lookup (proxy_types, interface) == NULL);
|
|
g_hash_table_insert (proxy_types, (char *) interface, GSIZE_TO_POINTER (proxy_type));
|
|
}
|
|
|
|
/* We don't (currently) use GDBus's property-handling code */
|
|
#define NM_DBUS_PROXY_FLAGS (G_DBUS_PROXY_FLAGS_DO_NOT_LOAD_PROPERTIES | \
|
|
G_DBUS_PROXY_FLAGS_DO_NOT_AUTO_START)
|
|
|
|
/* D-Bus has an upper limit on number of Match rules and it's rather easy
|
|
* to hit as the proxy likes to add one for each object. Let's remove the Match
|
|
* rule the proxy added and ensure a less granular rule is present instead.
|
|
*
|
|
* Also, don't do this immediately since it has a performance penalty.
|
|
* Still better than loosing the signals altogether.
|
|
*
|
|
* Ideally, we should be able to tell glib not to hook its rules:
|
|
* https://bugzilla.gnome.org/show_bug.cgi?id=758749
|
|
*/
|
|
static void
|
|
_nm_dbus_proxy_replace_match (GDBusProxy *proxy)
|
|
{
|
|
GDBusConnection *connection = g_dbus_proxy_get_connection (proxy);
|
|
static unsigned match_counter = 1024;
|
|
gchar *match;
|
|
|
|
nm_assert (!g_strcmp0 (g_dbus_proxy_get_name (proxy), NM_DBUS_SERVICE));
|
|
|
|
if (match_counter == 1) {
|
|
/* If we hit the low matches watermark, install a
|
|
* less granular one. */
|
|
g_dbus_connection_call (connection,
|
|
"org.freedesktop.DBus",
|
|
"/org/freedesktop/DBus",
|
|
"org.freedesktop.DBus",
|
|
"AddMatch",
|
|
g_variant_new ("(s)", "type='signal',sender='" NM_DBUS_SERVICE "'"),
|
|
NULL,
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1,
|
|
NULL,
|
|
NULL,
|
|
NULL);
|
|
}
|
|
|
|
if (match_counter)
|
|
match_counter--;
|
|
if (match_counter)
|
|
return;
|
|
|
|
/* Remove what this proxy added. */
|
|
match = g_strdup_printf ("type='signal',sender='" NM_DBUS_SERVICE "',"
|
|
"interface='%s',path='%s'",
|
|
g_dbus_proxy_get_interface_name (proxy),
|
|
g_dbus_proxy_get_object_path (proxy));
|
|
g_dbus_connection_call (connection,
|
|
"org.freedesktop.DBus",
|
|
"/org/freedesktop/DBus",
|
|
"org.freedesktop.DBus",
|
|
"RemoveMatch",
|
|
g_variant_new ("(s)", match),
|
|
NULL,
|
|
G_DBUS_CALL_FLAGS_NONE,
|
|
-1,
|
|
NULL,
|
|
NULL,
|
|
NULL);
|
|
g_free (match);
|
|
}
|
|
|
|
GDBusProxy *
|
|
_nm_dbus_new_proxy_for_connection (GDBusConnection *connection,
|
|
const char *path,
|
|
const char *interface,
|
|
GCancellable *cancellable,
|
|
GError **error)
|
|
{
|
|
GDBusProxy *proxy;
|
|
GType proxy_type;
|
|
const char *name;
|
|
|
|
proxy_type = GPOINTER_TO_SIZE (g_hash_table_lookup (proxy_types, interface));
|
|
if (!proxy_type)
|
|
proxy_type = G_TYPE_DBUS_PROXY;
|
|
|
|
if (_nm_dbus_is_connection_private (connection))
|
|
name = NULL;
|
|
else
|
|
name = NM_DBUS_SERVICE;
|
|
|
|
proxy = g_initable_new (proxy_type, cancellable, error,
|
|
"g-connection", connection,
|
|
"g-flags", NM_DBUS_PROXY_FLAGS,
|
|
"g-name", name,
|
|
"g-object-path", path,
|
|
"g-interface-name", interface,
|
|
NULL);
|
|
_nm_dbus_proxy_replace_match (proxy);
|
|
|
|
return proxy;
|
|
}
|
|
|
|
void
|
|
_nm_dbus_new_proxy_for_connection_async (GDBusConnection *connection,
|
|
const char *path,
|
|
const char *interface,
|
|
GCancellable *cancellable,
|
|
GAsyncReadyCallback callback,
|
|
gpointer user_data)
|
|
{
|
|
GType proxy_type;
|
|
const char *name;
|
|
|
|
proxy_type = GPOINTER_TO_SIZE (g_hash_table_lookup (proxy_types, interface));
|
|
if (!proxy_type)
|
|
proxy_type = G_TYPE_DBUS_PROXY;
|
|
|
|
if (_nm_dbus_is_connection_private (connection))
|
|
name = NULL;
|
|
else
|
|
name = NM_DBUS_SERVICE;
|
|
|
|
g_async_initable_new_async (proxy_type, G_PRIORITY_DEFAULT,
|
|
cancellable, callback, user_data,
|
|
"g-connection", connection,
|
|
"g-flags", NM_DBUS_PROXY_FLAGS,
|
|
"g-name", name,
|
|
"g-object-path", path,
|
|
"g-interface-name", interface,
|
|
NULL);
|
|
}
|
|
|
|
GDBusProxy *
|
|
_nm_dbus_new_proxy_for_connection_finish (GAsyncResult *result,
|
|
GError **error)
|
|
{
|
|
GObject *source;
|
|
GDBusProxy *proxy;
|
|
|
|
source = g_async_result_get_source_object (result);
|
|
proxy = G_DBUS_PROXY (g_async_initable_new_finish (G_ASYNC_INITABLE (source), result, error));
|
|
g_object_unref (source);
|
|
_nm_dbus_proxy_replace_match (proxy);
|
|
|
|
return proxy;
|
|
}
|
|
|
|
/* Binds the properties on a generated server-side GDBus object to the
|
|
* corresponding properties on the public object.
|
|
*/
|
|
void
|
|
_nm_dbus_bind_properties (gpointer object, gpointer skeleton)
|
|
{
|
|
GParamSpec **properties;
|
|
guint n_properties;
|
|
int i;
|
|
|
|
properties = g_object_class_list_properties (G_OBJECT_GET_CLASS (skeleton), &n_properties);
|
|
for (i = 0; i < n_properties; i++) {
|
|
if (g_str_has_prefix (properties[i]->name, "g-"))
|
|
continue;
|
|
|
|
g_object_bind_property (object, properties[i]->name,
|
|
skeleton, properties[i]->name,
|
|
G_BINDING_BIDIRECTIONAL | G_BINDING_SYNC_CREATE);
|
|
}
|
|
g_free (properties);
|
|
}
|
|
|
|
static char *
|
|
signal_name_from_method_name (const char *method_name)
|
|
{
|
|
GString *signal_name;
|
|
const char *p;
|
|
|
|
signal_name = g_string_new ("handle");
|
|
for (p = method_name; *p; p++) {
|
|
if (g_ascii_isupper (*p))
|
|
g_string_append_c (signal_name, '-');
|
|
g_string_append_c (signal_name, g_ascii_tolower (*p));
|
|
}
|
|
|
|
return g_string_free (signal_name, FALSE);
|
|
}
|
|
|
|
static void
|
|
_nm_dbus_method_meta_marshal (GClosure *closure, GValue *return_value,
|
|
guint n_param_values, const GValue *param_values,
|
|
gpointer invocation_hint, gpointer marshal_data)
|
|
{
|
|
closure->marshal (closure, return_value, n_param_values,
|
|
param_values, invocation_hint,
|
|
((GCClosure *)closure)->callback);
|
|
|
|
g_value_set_boolean (return_value, TRUE);
|
|
}
|
|
|
|
/* Takes (method_name, handler_func) pairs and connects the handlers to the
|
|
* signals on skeleton, with object as the user_data, but swapped so it comes
|
|
* first in the argument list, and handling the return value automatically.
|
|
*/
|
|
void
|
|
_nm_dbus_bind_methods (gpointer object, gpointer skeleton, ...)
|
|
{
|
|
va_list ap;
|
|
const char *method_name;
|
|
char *signal_name;
|
|
GCallback handler;
|
|
GClosure *closure;
|
|
|
|
va_start (ap, skeleton);
|
|
while ( (method_name = va_arg (ap, const char *))
|
|
&& (handler = va_arg (ap, GCallback))) {
|
|
signal_name = signal_name_from_method_name (method_name);
|
|
closure = g_cclosure_new_swap (handler, object, NULL);
|
|
g_closure_set_meta_marshal (closure, NULL, _nm_dbus_method_meta_marshal);
|
|
g_signal_connect_closure (skeleton, signal_name, closure, FALSE);
|
|
g_free (signal_name);
|
|
}
|
|
va_end (ap);
|
|
}
|