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/*
* Copyright (C) 2008 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 <errno.h>
#include <pwd.h>
#include <string.h>
#define _POLKIT_BACKEND_ACTION_LOOKUP_NO_DEPRECATED_WARNING
#include <polkit/polkit.h>
#include <polkit/polkitprivate.h>
#include "polkitbackendactionlookup.h"
#include "polkitbackendprivate.h"
/**
* SECTION:polkitbackendactionlookup
* @title: PolkitBackendActionLookup
* @short_description: Interface used to provide data to authentication dialogs
* @stability: Unstable
*
* An interface that is used by backends to provide localized data
* shown in authentication dialogs.
*
* This inteface is intended for mechanisms to customize the message
* to show - a mechanism can provide a #GIOModule that registers one
* or more extensions that implement this interface. Every time an
* authentication dialog is shown, the registered extensions are
* consulted in priority order.
*
* This is useful if your mechanism wants to put up a message such as
* "Authentication is required to install 'Totem Movie Player'",
* e.g. messages that include more information than just the action
* name.
*
* Code implementing this interface <emphasis>cannot</emphasis> block
* or do any IO when methods are invoked. If information is needed to
* format the message or details, prepare it in advance and pass it as
* part of the @details object when doing the
* polkit_authority_check_authorization() call. Then the code in this
* interface can use that information to return localized data.
*
* Note that setlocale() and the <literal>LANG</literal> environment
* variable will be set up to match the locale of the authentication
* agent that is the receiver of the information. This means that code
* implementing this interface can use dgettext() or similar machinery
* to look up translations.
*/
static void
base_init (gpointer g_iface)
{
}
GType
polkit_backend_action_lookup_get_type (void)
{
static volatile gsize g_define_type_id__volatile = 0;
if (g_once_init_enter (&g_define_type_id__volatile))
{
static const GTypeInfo info =
{
sizeof (PolkitBackendActionLookupIface),
base_init, /* base_init */
NULL, /* base_finalize */
NULL, /* class_init */
NULL, /* class_finalize */
NULL, /* class_data */
0, /* instance_size */
0, /* n_preallocs */
NULL, /* instance_init */
NULL /* value_table */
};
GType iface_type =
g_type_register_static (G_TYPE_INTERFACE, "PolkitBackendActionLookup", &info, 0);
g_type_interface_add_prerequisite (iface_type, G_TYPE_OBJECT);
g_once_init_leave (&g_define_type_id__volatile, iface_type);
}
return g_define_type_id__volatile;
}
/**
* polkit_backend_action_lookup_get_message:
* @lookup: A #PolkitBackendActionLookup.
* @action_id: The action to get the message for.
* @details: Details passed to polkit_authority_check_authorization().
* @action_description: A #PolkitActionDescription object for @action_id.
*
* Computes a message to show in an authentication dialog for
* @action_id and @details.
*
* Returns: A localized string to show in the authentication dialog or %NULL. Caller must free this string.
**/
gchar *
polkit_backend_action_lookup_get_message (PolkitBackendActionLookup *lookup,
const gchar *action_id,
PolkitDetails *details,
PolkitActionDescription *action_description)
{
PolkitBackendActionLookupIface *iface = POLKIT_BACKEND_ACTION_LOOKUP_GET_IFACE (lookup);
if (iface->get_message == NULL)
return NULL;
else
return iface->get_message (lookup, action_id, details, action_description);
}
/**
* polkit_backend_action_lookup_get_icon_name:
* @lookup: A #PolkitBackendActionLookup.
* @action_id: The action to get the themed icon for.
* @details: Details passed to polkit_authority_check_authorization().
* @action_description: A #PolkitActionDescription object for @action_id.
*
* Computes a themed icon name to show in an authentication dialog for
* @action_id and @details.
*
* Returns: A themed icon name or %NULL. Caller must free this string.
**/
gchar *
polkit_backend_action_lookup_get_icon_name (PolkitBackendActionLookup *lookup,
const gchar *action_id,
PolkitDetails *details,
PolkitActionDescription *action_description)
{
PolkitBackendActionLookupIface *iface = POLKIT_BACKEND_ACTION_LOOKUP_GET_IFACE (lookup);
if (iface->get_icon_name == NULL)
return NULL;
else
return iface->get_icon_name (lookup, action_id, details, action_description);
}
/**
* polkit_backend_action_lookup_get_details:
* @lookup: A #PolkitBackendActionLookup.
* @action_id: The action to get the details for.
* @details: Details passed to polkit_authority_check_authorization().
* @action_description: A #PolkitActionDescription object for @action_id.
*
* Computes localized details to show in an authentication dialog for
* @action_id and @details.
*
* Returns: A #PolkitDetails object with localized details or %NULL. Caller must free the result.
**/
PolkitDetails *
polkit_backend_action_lookup_get_details (PolkitBackendActionLookup *lookup,
const gchar *action_id,
PolkitDetails *details,
PolkitActionDescription *action_description)
{
PolkitBackendActionLookupIface *iface = POLKIT_BACKEND_ACTION_LOOKUP_GET_IFACE (lookup);
if (iface->get_details == NULL)
return NULL;
else
return iface->get_details (lookup, action_id, details, action_description);
}
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