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94b9071344
glib/gio/gdbusinterface.c
David Zeuthen 94b9071344 Start merging gdbus-codegen code 
Signed-off-by: David Zeuthen <davidz@redhat.com>
2011-04-08 15:48:28 -04:00

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/* GDBus - GLib D-Bus Library
*
* Copyright (C) 2008-2010 Red Hat, Inc.
*
* 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., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: David Zeuthen <davidz@redhat.com>
*/
#include "config.h"
#include "gdbusobject.h"
#include "gdbusinterface.h"
#include "gio-marshal.h"
#include "glibintl.h"
/**
* SECTION:gdbusinterface
* @short_description: Base type for D-Bus interfaces
* @include: gio/gio.h
*
* The #GDBusInterface type is the base type for D-Bus interfaces both
* on the service side (see #GDBusInterfaceStub) and client side (see
* #GDBusProxy).
*/
typedef GDBusInterfaceIface GDBusInterfaceInterface;
G_DEFINE_INTERFACE (GDBusInterface, g_dbus_interface, G_TYPE_OBJECT)
static void
g_dbus_interface_default_init (GDBusInterfaceIface *iface)
{
}
/* ---------------------------------------------------------------------------------------------------- */
/**
* g_dbus_interface_get_info:
* @interface: An exported D-Bus interface.
*
* Gets D-Bus introspection information for the D-Bus interface
* implemented by @interface.
*
* Returns: (transfer none): A #GDBusInterfaceInfo. Do not free.
*/
GDBusInterfaceInfo *
g_dbus_interface_get_info (GDBusInterface *interface)
{
g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface), NULL);
return G_DBUS_INTERFACE_GET_IFACE (interface)->get_info (interface);
}
/**
* g_dbus_interface_get_object:
* @interface: An exported D-Bus interface.
*
* Gets the #GDBusObject that @interface belongs to, if any.
*
* Returns: (transfer none): A #GDBusObject or %NULL. The returned
* reference belongs to @interface and should not be freed.
*/
GDBusObject *
g_dbus_interface_get_object (GDBusInterface *interface)
{
g_return_val_if_fail (G_IS_DBUS_INTERFACE (interface), NULL);
return G_DBUS_INTERFACE_GET_IFACE (interface)->get_object (interface);
}
/**
* g_dbus_interface_set_object:
* @interface: An exported D-Bus interface.
* @object: A #GDBusObject or %NULL.
*
* Sets the #GDBusObject for @interface to @object.
*
* Note that @interface will hold a weak reference to @object.
*/
void
g_dbus_interface_set_object (GDBusInterface *interface,
GDBusObject *object)
{
g_return_if_fail (G_IS_DBUS_INTERFACE (interface));
g_return_if_fail (object == NULL || G_IS_DBUS_OBJECT (object));
G_DBUS_INTERFACE_GET_IFACE (interface)->set_object (interface, object);
}
/* Keep it here for now. TODO: move */
#include <string.h>
/**
* g_dbus_gvariant_to_gvalue:
* @value: A #GVariant.
* @out_gvalue: Return location for the #GValue.
*
* Convert a #GVariant to a #GValue. If @value is floating, it is consumed.
*
* Note that the passed @out_gvalue does not have to have a #GType set.
*
* Returns: %TRUE if the conversion succeeded, %FALSE otherwise.
*/
gboolean
g_dbus_gvariant_to_gvalue (GVariant *value,
GValue *out_gvalue)
{
gboolean ret;
const GVariantType *type;
gchar **array;
g_return_val_if_fail (value != NULL, FALSE);
g_return_val_if_fail (out_gvalue != NULL, FALSE);
ret = FALSE;
memset (out_gvalue, '\0', sizeof (GValue));
switch (g_variant_classify (value))
{
case G_VARIANT_CLASS_BOOLEAN:
g_value_init (out_gvalue, G_TYPE_BOOLEAN);
g_value_set_boolean (out_gvalue, g_variant_get_boolean (value));
break;
case G_VARIANT_CLASS_BYTE:
g_value_init (out_gvalue, G_TYPE_UCHAR);
g_value_set_uchar (out_gvalue, g_variant_get_byte (value));
break;
case G_VARIANT_CLASS_INT16:
g_value_init (out_gvalue, G_TYPE_INT);
g_value_set_int (out_gvalue, g_variant_get_int16 (value));
break;
case G_VARIANT_CLASS_UINT16:
g_value_init (out_gvalue, G_TYPE_UINT);
g_value_set_uint (out_gvalue, g_variant_get_uint16 (value));
break;
case G_VARIANT_CLASS_INT32:
g_value_init (out_gvalue, G_TYPE_INT);
g_value_set_int (out_gvalue, g_variant_get_int32 (value));
break;
case G_VARIANT_CLASS_UINT32:
g_value_init (out_gvalue, G_TYPE_UINT);
g_value_set_uint (out_gvalue, g_variant_get_uint32 (value));
break;
case G_VARIANT_CLASS_INT64:
g_value_init (out_gvalue, G_TYPE_INT64);
g_value_set_int64 (out_gvalue, g_variant_get_int64 (value));
break;
case G_VARIANT_CLASS_UINT64:
g_value_init (out_gvalue, G_TYPE_UINT64);
g_value_set_uint64 (out_gvalue, g_variant_get_uint64 (value));
break;
case G_VARIANT_CLASS_HANDLE:
g_value_init (out_gvalue, G_TYPE_INT);
g_value_set_int (out_gvalue, g_variant_get_int32 (value));
break;
case G_VARIANT_CLASS_DOUBLE:
g_value_init (out_gvalue, G_TYPE_DOUBLE);
g_value_set_double (out_gvalue, g_variant_get_double (value));
break;
case G_VARIANT_CLASS_STRING:
g_value_init (out_gvalue, G_TYPE_STRING);
g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
break;
case G_VARIANT_CLASS_OBJECT_PATH:
g_value_init (out_gvalue, G_TYPE_STRING);
g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
break;
case G_VARIANT_CLASS_SIGNATURE:
g_value_init (out_gvalue, G_TYPE_STRING);
g_value_set_string (out_gvalue, g_variant_get_string (value, NULL));
break;
case G_VARIANT_CLASS_ARRAY:
type = g_variant_get_type (value);
switch (g_variant_type_peek_string (type)[1])
{
case G_VARIANT_CLASS_BYTE:
g_value_init (out_gvalue, G_TYPE_STRING);
g_value_set_string (out_gvalue, g_variant_get_bytestring (value));
break;
case G_VARIANT_CLASS_STRING:
g_value_init (out_gvalue, G_TYPE_STRV);
array = g_variant_dup_strv (value, NULL);
g_value_take_boxed (out_gvalue, array);
break;
case G_VARIANT_CLASS_ARRAY:
switch (g_variant_type_peek_string (type)[2])
{
case G_VARIANT_CLASS_BYTE:
g_value_init (out_gvalue, G_TYPE_STRV);
array = g_variant_dup_bytestring_array (value, NULL);
g_value_take_boxed (out_gvalue, array);
break;
default:
g_value_init (out_gvalue, G_TYPE_VARIANT);
g_value_set_variant (out_gvalue, value);
break;
}
break;
default:
g_value_init (out_gvalue, G_TYPE_VARIANT);
g_value_set_variant (out_gvalue, value);
break;
}
break;
case G_VARIANT_CLASS_VARIANT:
case G_VARIANT_CLASS_MAYBE:
case G_VARIANT_CLASS_TUPLE:
case G_VARIANT_CLASS_DICT_ENTRY:
g_value_init (out_gvalue, G_TYPE_VARIANT);
g_value_set_variant (out_gvalue, value);
break;
}
ret = TRUE;
return ret;
}
/**
* g_dbus_gvalue_to_gvariant:
* @gvalue: A #GValue to convert to a #GVariant.
* @expected_type: The #GVariantType to create.
*
* Convert a #GValue to #GVariant.
*
* Returns: A #GVariant (never floating) holding the data from @gvalue
* or %NULL in case of error. Free with g_variant_unref().
*/
GVariant *
g_dbus_gvalue_to_gvariant (const GValue *gvalue,
const GVariantType *expected_type)
{
GVariant *ret;
const gchar *s;
const gchar * const *as;
const gchar *empty_strv[1] = {NULL};
g_return_val_if_fail (gvalue != NULL, NULL);
g_return_val_if_fail (expected_type != NULL, NULL);
ret = NULL;
/* The expected type could easily be e.g. "s" with the GValue holding a string.
* because of the UseGVariant annotation
*/
if (G_VALUE_TYPE (gvalue) == G_TYPE_VARIANT)
{
ret = g_value_dup_variant (gvalue);
}
else
{
switch (g_variant_type_peek_string (expected_type)[0])
{
case G_VARIANT_CLASS_BOOLEAN:
ret = g_variant_ref_sink (g_variant_new_boolean (g_value_get_boolean (gvalue)));
break;
case G_VARIANT_CLASS_BYTE:
ret = g_variant_ref_sink (g_variant_new_byte (g_value_get_uchar (gvalue)));
break;
case G_VARIANT_CLASS_INT16:
ret = g_variant_ref_sink (g_variant_new_int16 (g_value_get_int (gvalue)));
break;
case G_VARIANT_CLASS_UINT16:
ret = g_variant_ref_sink (g_variant_new_uint16 (g_value_get_uint (gvalue)));
break;
case G_VARIANT_CLASS_INT32:
ret = g_variant_ref_sink (g_variant_new_int32 (g_value_get_int (gvalue)));
break;
case G_VARIANT_CLASS_UINT32:
ret = g_variant_ref_sink (g_variant_new_uint32 (g_value_get_uint (gvalue)));
break;
case G_VARIANT_CLASS_INT64:
ret = g_variant_ref_sink (g_variant_new_int64 (g_value_get_int64 (gvalue)));
break;
case G_VARIANT_CLASS_UINT64:
ret = g_variant_ref_sink (g_variant_new_uint64 (g_value_get_uint64 (gvalue)));
break;
case G_VARIANT_CLASS_HANDLE:
ret = g_variant_ref_sink (g_variant_new_handle (g_value_get_int (gvalue)));
break;
case G_VARIANT_CLASS_DOUBLE:
ret = g_variant_ref_sink (g_variant_new_double (g_value_get_double (gvalue)));
break;
case G_VARIANT_CLASS_STRING:
s = g_value_get_string (gvalue);
if (s == NULL)
s = "";
ret = g_variant_ref_sink (g_variant_new_string (s));
break;
case G_VARIANT_CLASS_OBJECT_PATH:
s = g_value_get_string (gvalue);
if (s == NULL)
s = "/";
ret = g_variant_ref_sink (g_variant_new_object_path (s));
break;
case G_VARIANT_CLASS_SIGNATURE:
s = g_value_get_string (gvalue);
if (s == NULL)
s = "";
ret = g_variant_ref_sink (g_variant_new_signature (s));
break;
case G_VARIANT_CLASS_ARRAY:
switch (g_variant_type_peek_string (expected_type)[1])
{
case G_VARIANT_CLASS_BYTE:
s = g_value_get_string (gvalue);
if (s == NULL)
s = "";
ret = g_variant_ref_sink (g_variant_new_bytestring (s));
break;
case G_VARIANT_CLASS_STRING:
as = g_value_get_boxed (gvalue);
if (as == NULL)
as = empty_strv;
ret = g_variant_ref_sink (g_variant_new_strv (as, -1));
break;
case G_VARIANT_CLASS_ARRAY:
switch (g_variant_type_peek_string (expected_type)[2])
{
case G_VARIANT_CLASS_BYTE:
as = g_value_get_boxed (gvalue);
if (as == NULL)
as = empty_strv;
ret = g_variant_ref_sink (g_variant_new_bytestring_array (as, -1));
break;
default:
ret = g_value_dup_variant (gvalue);
break;
}
break;
default:
ret = g_value_dup_variant (gvalue);
break;
}
break;
default:
case G_VARIANT_CLASS_VARIANT:
case G_VARIANT_CLASS_MAYBE:
case G_VARIANT_CLASS_TUPLE:
case G_VARIANT_CLASS_DICT_ENTRY:
ret = g_value_dup_variant (gvalue);
break;
}
}
/* Could be that the GValue is holding a NULL GVariant - in that case,
* we return an "empty" GVariant instead of a NULL GVariant
*/
if (ret == NULL)
{
GVariant *untrusted_empty;
untrusted_empty = g_variant_new_from_data (expected_type, NULL, 0, FALSE, NULL, NULL);
ret = g_variant_ref_sink (g_variant_get_normal_form (untrusted_empty));
g_variant_unref (untrusted_empty);
}
g_assert (!g_variant_is_floating (ret));
return ret;
}
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