1 /* GDBus - GLib D-Bus Library
3 * Copyright (C) 2008-2010 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: David Zeuthen <davidz@redhat.com>
25 #include "gdbusobject.h"
26 #include "gdbusinterface.h"
27 #include "gio-marshal.h"
32 * SECTION:gdbusinterface
33 * @short_description: Base type for D-Bus interfaces
36 * The #GDBusInterface type is the base type for D-Bus interfaces both
37 * on the service side (see #GDBusInterfaceStub) and client side (see
41 typedef GDBusInterfaceIface GDBusInterfaceInterface;
42 G_DEFINE_INTERFACE (GDBusInterface, g_dbus_interface, G_TYPE_OBJECT)
45 g_dbus_interface_default_init (GDBusInterfaceIface *iface)
49 /* ---------------------------------------------------------------------------------------------------- */
52 * g_dbus_interface_get_info:
53 * @interface: An exported D-Bus interface.
55 * Gets D-Bus introspection information for the D-Bus interface
56 * implemented by @interface.
58 * Returns: (transfer none): A #GDBusInterfaceInfo. Do not free.
61 g_dbus_interface_get_info (GDBusInterface *interface)
63 g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface), NULL);
64 return G_DBUS_INTERFACE_GET_IFACE (interface)->get_info (interface);
68 * g_dbus_interface_get_object:
69 * @interface: An exported D-Bus interface.
71 * Gets the #GDBusObject that @interface belongs to, if any.
73 * Returns: (transfer none): A #GDBusObject or %NULL. The returned
74 * reference belongs to @interface and should not be freed.
77 g_dbus_interface_get_object (GDBusInterface *interface)
79 g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface), NULL);
80 return G_DBUS_INTERFACE_GET_IFACE (interface)->get_object (interface);
84 * g_dbus_interface_set_object:
85 * @interface: An exported D-Bus interface.
86 * @object: A #GDBusObject or %NULL.
88 * Sets the #GDBusObject for @interface to @object.
90 * Note that @interface will hold a weak reference to @object.
93 g_dbus_interface_set_object (GDBusInterface *interface,
96 g_return_if_fail (G_IS_DBUS_INTERFACE (interface));
97 g_return_if_fail (object == NULL || G_IS_DBUS_OBJECT (object));
98 G_DBUS_INTERFACE_GET_IFACE (interface)->set_object (interface, object);
101 /* Keep it here for now. TODO: move */
106 * g_dbus_gvariant_to_gvalue:
107 * @value: A #GVariant.
108 * @out_gvalue: Return location for the #GValue.
110 * Convert a #GVariant to a #GValue. If @value is floating, it is consumed.
112 * Note that the passed @out_gvalue does not have to have a #GType set.
114 * Returns: %TRUE if the conversion succeeded, %FALSE otherwise.
117 g_dbus_gvariant_to_gvalue (GVariant *value,
121 const GVariantType *type;
124 g_return_val_if_fail (value != NULL, FALSE);
125 g_return_val_if_fail (out_gvalue != NULL, FALSE);
129 memset (out_gvalue, '\0', sizeof (GValue));
131 switch (g_variant_classify (value))
133 case G_VARIANT_CLASS_BOOLEAN:
134 g_value_init (out_gvalue, G_TYPE_BOOLEAN);
135 g_value_set_boolean (out_gvalue, g_variant_get_boolean (value));
138 case G_VARIANT_CLASS_BYTE:
139 g_value_init (out_gvalue, G_TYPE_UCHAR);
140 g_value_set_uchar (out_gvalue, g_variant_get_byte (value));
143 case G_VARIANT_CLASS_INT16:
144 g_value_init (out_gvalue, G_TYPE_INT);
145 g_value_set_int (out_gvalue, g_variant_get_int16 (value));
148 case G_VARIANT_CLASS_UINT16:
149 g_value_init (out_gvalue, G_TYPE_UINT);
150 g_value_set_uint (out_gvalue, g_variant_get_uint16 (value));
153 case G_VARIANT_CLASS_INT32:
154 g_value_init (out_gvalue, G_TYPE_INT);
155 g_value_set_int (out_gvalue, g_variant_get_int32 (value));
158 case G_VARIANT_CLASS_UINT32:
159 g_value_init (out_gvalue, G_TYPE_UINT);
160 g_value_set_uint (out_gvalue, g_variant_get_uint32 (value));
163 case G_VARIANT_CLASS_INT64:
164 g_value_init (out_gvalue, G_TYPE_INT64);
165 g_value_set_int64 (out_gvalue, g_variant_get_int64 (value));
168 case G_VARIANT_CLASS_UINT64:
169 g_value_init (out_gvalue, G_TYPE_UINT64);
170 g_value_set_uint64 (out_gvalue, g_variant_get_uint64 (value));
173 case G_VARIANT_CLASS_HANDLE:
174 g_value_init (out_gvalue, G_TYPE_INT);
175 g_value_set_int (out_gvalue, g_variant_get_int32 (value));
178 case G_VARIANT_CLASS_DOUBLE:
179 g_value_init (out_gvalue, G_TYPE_DOUBLE);
180 g_value_set_double (out_gvalue, g_variant_get_double (value));
183 case G_VARIANT_CLASS_STRING:
184 g_value_init (out_gvalue, G_TYPE_STRING);
185 g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
188 case G_VARIANT_CLASS_OBJECT_PATH:
189 g_value_init (out_gvalue, G_TYPE_STRING);
190 g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
193 case G_VARIANT_CLASS_SIGNATURE:
194 g_value_init (out_gvalue, G_TYPE_STRING);
195 g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
198 case G_VARIANT_CLASS_ARRAY:
199 type = g_variant_get_type (value);
200 switch (g_variant_type_peek_string (type)[1])
202 case G_VARIANT_CLASS_BYTE:
203 g_value_init (out_gvalue, G_TYPE_STRING);
204 g_value_set_string (out_gvalue, g_variant_get_bytestring (value));
207 case G_VARIANT_CLASS_STRING:
208 g_value_init (out_gvalue, G_TYPE_STRV);
209 array = g_variant_dup_strv (value, NULL);
210 g_value_take_boxed (out_gvalue, array);
213 case G_VARIANT_CLASS_ARRAY:
214 switch (g_variant_type_peek_string (type)[2])
216 case G_VARIANT_CLASS_BYTE:
217 g_value_init (out_gvalue, G_TYPE_STRV);
218 array = g_variant_dup_bytestring_array (value, NULL);
219 g_value_take_boxed (out_gvalue, array);
223 g_value_init (out_gvalue, G_TYPE_VARIANT);
224 g_value_set_variant (out_gvalue, value);
230 g_value_init (out_gvalue, G_TYPE_VARIANT);
231 g_value_set_variant (out_gvalue, value);
236 case G_VARIANT_CLASS_VARIANT:
237 case G_VARIANT_CLASS_MAYBE:
238 case G_VARIANT_CLASS_TUPLE:
239 case G_VARIANT_CLASS_DICT_ENTRY:
240 g_value_init (out_gvalue, G_TYPE_VARIANT);
241 g_value_set_variant (out_gvalue, value);
252 * g_dbus_gvalue_to_gvariant:
253 * @gvalue: A #GValue to convert to a #GVariant.
254 * @expected_type: The #GVariantType to create.
256 * Convert a #GValue to #GVariant.
258 * Returns: A #GVariant (never floating) holding the data from @gvalue
259 * or %NULL in case of error. Free with g_variant_unref().
262 g_dbus_gvalue_to_gvariant (const GValue *gvalue,
263 const GVariantType *expected_type)
267 const gchar * const *as;
268 const gchar *empty_strv[1] = {NULL};
270 g_return_val_if_fail (gvalue != NULL, NULL);
271 g_return_val_if_fail (expected_type != NULL, NULL);
275 /* The expected type could easily be e.g. "s" with the GValue holding a string.
276 * because of the UseGVariant annotation
278 if (G_VALUE_TYPE (gvalue) == G_TYPE_VARIANT)
280 ret = g_value_dup_variant (gvalue);
284 switch (g_variant_type_peek_string (expected_type)[0])
286 case G_VARIANT_CLASS_BOOLEAN:
287 ret = g_variant_ref_sink (g_variant_new_boolean (g_value_get_boolean (gvalue)));
290 case G_VARIANT_CLASS_BYTE:
291 ret = g_variant_ref_sink (g_variant_new_byte (g_value_get_uchar (gvalue)));
294 case G_VARIANT_CLASS_INT16:
295 ret = g_variant_ref_sink (g_variant_new_int16 (g_value_get_int (gvalue)));
298 case G_VARIANT_CLASS_UINT16:
299 ret = g_variant_ref_sink (g_variant_new_uint16 (g_value_get_uint (gvalue)));
302 case G_VARIANT_CLASS_INT32:
303 ret = g_variant_ref_sink (g_variant_new_int32 (g_value_get_int (gvalue)));
306 case G_VARIANT_CLASS_UINT32:
307 ret = g_variant_ref_sink (g_variant_new_uint32 (g_value_get_uint (gvalue)));
310 case G_VARIANT_CLASS_INT64:
311 ret = g_variant_ref_sink (g_variant_new_int64 (g_value_get_int64 (gvalue)));
314 case G_VARIANT_CLASS_UINT64:
315 ret = g_variant_ref_sink (g_variant_new_uint64 (g_value_get_uint64 (gvalue)));
318 case G_VARIANT_CLASS_HANDLE:
319 ret = g_variant_ref_sink (g_variant_new_handle (g_value_get_int (gvalue)));
322 case G_VARIANT_CLASS_DOUBLE:
323 ret = g_variant_ref_sink (g_variant_new_double (g_value_get_double (gvalue)));
326 case G_VARIANT_CLASS_STRING:
327 s = g_value_get_string (gvalue);
330 ret = g_variant_ref_sink (g_variant_new_string (s));
333 case G_VARIANT_CLASS_OBJECT_PATH:
334 s = g_value_get_string (gvalue);
337 ret = g_variant_ref_sink (g_variant_new_object_path (s));
340 case G_VARIANT_CLASS_SIGNATURE:
341 s = g_value_get_string (gvalue);
344 ret = g_variant_ref_sink (g_variant_new_signature (s));
347 case G_VARIANT_CLASS_ARRAY:
348 switch (g_variant_type_peek_string (expected_type)[1])
350 case G_VARIANT_CLASS_BYTE:
351 s = g_value_get_string (gvalue);
354 ret = g_variant_ref_sink (g_variant_new_bytestring (s));
357 case G_VARIANT_CLASS_STRING:
358 as = g_value_get_boxed (gvalue);
361 ret = g_variant_ref_sink (g_variant_new_strv (as, -1));
364 case G_VARIANT_CLASS_ARRAY:
365 switch (g_variant_type_peek_string (expected_type)[2])
367 case G_VARIANT_CLASS_BYTE:
368 as = g_value_get_boxed (gvalue);
371 ret = g_variant_ref_sink (g_variant_new_bytestring_array (as, -1));
375 ret = g_value_dup_variant (gvalue);
381 ret = g_value_dup_variant (gvalue);
387 case G_VARIANT_CLASS_VARIANT:
388 case G_VARIANT_CLASS_MAYBE:
389 case G_VARIANT_CLASS_TUPLE:
390 case G_VARIANT_CLASS_DICT_ENTRY:
391 ret = g_value_dup_variant (gvalue);
396 /* Could be that the GValue is holding a NULL GVariant - in that case,
397 * we return an "empty" GVariant instead of a NULL GVariant
401 GVariant *untrusted_empty;
402 untrusted_empty = g_variant_new_from_data (expected_type, NULL, 0, FALSE, NULL, NULL);
403 ret = g_variant_ref_sink (g_variant_get_normal_form (untrusted_empty));
404 g_variant_unref (untrusted_empty);
407 g_assert (!g_variant_is_floating (ret));