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/* -*- mode: C; c-file-style: "gnu" -*- */
/* services.c Service management
*
* Copyright (C) 2003 Red Hat, Inc.
* Copyright (C) 2003 CodeFactory AB
*
* Licensed under the Academic Free License version 1.2
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "driver.h"
#include "services.h"
#include "connection.h"
#include <dbus/dbus-hash.h>
#include <dbus/dbus-list.h>
#include <dbus/dbus-mempool.h>
struct BusService
{
char *name;
DBusList *owners;
unsigned int prohibit_replacement:1;
};
static DBusHashTable *service_hash = NULL;
static DBusMemPool *service_pool = NULL;
BusService*
bus_service_lookup (const DBusString *service_name,
dbus_bool_t create_if_not_found)
{
const char *c_name;
BusService *service;
if (service_hash == NULL)
{
service_hash = _dbus_hash_table_new (DBUS_HASH_STRING,
NULL, NULL);
service_pool = _dbus_mem_pool_new (sizeof (BusService),
TRUE);
if (service_hash == NULL || service_pool == NULL)
{
if (service_hash)
{
_dbus_hash_table_unref (service_hash);
service_hash = NULL;
}
if (service_pool)
{
_dbus_mem_pool_free (service_pool);
service_pool = NULL;
}
return NULL;
}
}
_dbus_string_get_const_data (service_name, &c_name);
service = _dbus_hash_table_lookup_string (service_hash,
c_name);
if (service != NULL)
return service;
if (!create_if_not_found)
return NULL;
service = _dbus_mem_pool_alloc (service_pool);
if (service == NULL)
return NULL;
service->name = _dbus_strdup (c_name);
if (service->name == NULL)
{
_dbus_mem_pool_dealloc (service_pool, service);
return NULL;
}
if (!_dbus_hash_table_insert_string (service_hash,
service->name,
service))
{
dbus_free (service->name);
_dbus_mem_pool_dealloc (service_pool, service);
return NULL;
}
return service;
}
dbus_bool_t
bus_service_add_owner (BusService *service,
DBusConnection *owner)
{
if (!_dbus_list_append (&service->owners,
owner))
return FALSE;
if (!bus_connection_add_owned_service (owner, service))
{
_dbus_list_remove_last (&service->owners, owner);
return FALSE;
}
/* Send service acquired message */
if (bus_service_get_primary_owner (service) == owner)
bus_driver_send_service_acquired (owner, service->name);
return TRUE;
}
void
bus_service_remove_owner (BusService *service,
DBusConnection *owner)
{
/* Send service lost message */
if (bus_service_get_primary_owner (service) == owner)
bus_driver_send_service_lost (owner, service->name);
_dbus_list_remove_last (&service->owners, owner);
bus_connection_remove_owned_service (owner, service);
if (service->owners == NULL)
{
/* Delete service */
bus_driver_send_service_deleted (service->name);
_dbus_hash_table_remove_string (service_hash, service->name);
dbus_free (service->name);
_dbus_mem_pool_dealloc (service_pool, service);
}
else
{
/* Send service acquired to the new owner */
bus_driver_send_service_acquired (bus_service_get_primary_owner (service),
service->name);
}
}
DBusConnection*
bus_service_get_primary_owner (BusService *service)
{
return _dbus_list_get_first (&service->owners);
}
const char*
bus_service_get_name (BusService *service)
{
return service->name;
}
void
bus_service_foreach (BusServiceForeachFunction function,
void *data)
{
DBusHashIter iter;
if (service_hash == NULL)
return;
_dbus_hash_iter_init (service_hash, &iter);
while (_dbus_hash_iter_next (&iter))
{
BusService *service = _dbus_hash_iter_get_value (&iter);
(* function) (service, data);
}
}
char **
bus_services_list (int *array_len)
{
int i, j, len;
char **retval;
DBusHashIter iter;
len = _dbus_hash_table_get_n_entries (service_hash);
retval = dbus_new (char *, len);
if (retval == NULL)
return NULL;
_dbus_hash_iter_init (service_hash, &iter);
i = 0;
while (_dbus_hash_iter_next (&iter))
{
BusService *service = _dbus_hash_iter_get_value (&iter);
retval[i] = _dbus_strdup (service->name);
if (retval[i] == NULL)
goto error;
i++;
}
if (array_len)
*array_len = len;
return retval;
error:
for (j = 0; j < i; j++)
dbus_free (retval[i]);
dbus_free (retval);
return NULL;
}
void
bus_service_set_prohibit_replacement (BusService *service,
dbus_bool_t prohibit_replacement)
{
_dbus_assert (service->owners == NULL);
service->prohibit_replacement = prohibit_replacement != FALSE;
}
dbus_bool_t
bus_service_get_prohibit_replacement (BusService *service)
{
return service->prohibit_replacement;
}
dbus_bool_t
bus_service_has_owner (BusService *service,
DBusConnection *owner)
{
DBusList *link;
link = _dbus_list_get_first_link (&service->owners);
while (link != NULL)
{
if (link->data == owner)
return TRUE;
link = _dbus_list_get_next_link (&service->owners, link);
}
return FALSE;
}
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