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/* stats.c - statistics from the bus driver
*
* Licensed under the Academic Free License version 2.1
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301 USA
*/
#include <config.h>
#include "stats.h"
#include <dbus/dbus-internals.h>
#include <dbus/dbus-connection-internal.h>
#include "connection.h"
#include "services.h"
#include "utils.h"
#ifdef DBUS_ENABLE_STATS
static DBusMessage *
new_asv_reply (DBusMessage *message,
DBusMessageIter *iter,
DBusMessageIter *arr_iter)
{
DBusMessage *reply = dbus_message_new_method_return (message);
if (reply == NULL)
return NULL;
dbus_message_iter_init_append (reply, iter);
if (!dbus_message_iter_open_container (iter, DBUS_TYPE_ARRAY, "{sv}",
arr_iter))
{
dbus_message_unref (reply);
return NULL;
}
return reply;
}
static dbus_bool_t
open_asv_entry (DBusMessageIter *arr_iter,
DBusMessageIter *entry_iter,
const char *key,
const char *type,
DBusMessageIter *var_iter)
{
if (!dbus_message_iter_open_container (arr_iter, DBUS_TYPE_DICT_ENTRY,
NULL, entry_iter))
return FALSE;
if (!dbus_message_iter_append_basic (entry_iter, DBUS_TYPE_STRING, &key))
{
dbus_message_iter_abandon_container (arr_iter, entry_iter);
return FALSE;
}
if (!dbus_message_iter_open_container (entry_iter, DBUS_TYPE_VARIANT,
type, var_iter))
{
dbus_message_iter_abandon_container (arr_iter, entry_iter);
return FALSE;
}
return TRUE;
}
static dbus_bool_t
close_asv_entry (DBusMessageIter *arr_iter,
DBusMessageIter *entry_iter,
DBusMessageIter *var_iter)
{
if (!dbus_message_iter_close_container (entry_iter, var_iter))
{
dbus_message_iter_abandon_container (arr_iter, entry_iter);
return FALSE;
}
if (!dbus_message_iter_close_container (arr_iter, entry_iter))
return FALSE;
return TRUE;
}
static dbus_bool_t
close_asv_reply (DBusMessageIter *iter,
DBusMessageIter *arr_iter)
{
return dbus_message_iter_close_container (iter, arr_iter);
}
static void
abandon_asv_entry (DBusMessageIter *arr_iter,
DBusMessageIter *entry_iter,
DBusMessageIter *var_iter)
{
dbus_message_iter_abandon_container (entry_iter, var_iter);
dbus_message_iter_abandon_container (arr_iter, entry_iter);
}
static void
abandon_asv_reply (DBusMessageIter *iter,
DBusMessageIter *arr_iter)
{
dbus_message_iter_abandon_container (iter, arr_iter);
}
static dbus_bool_t
asv_add_uint32 (DBusMessageIter *iter,
DBusMessageIter *arr_iter,
const char *key,
dbus_uint32_t value)
{
DBusMessageIter entry_iter, var_iter;
if (!open_asv_entry (arr_iter, &entry_iter, key, DBUS_TYPE_UINT32_AS_STRING,
&var_iter))
goto oom;
if (!dbus_message_iter_append_basic (&var_iter, DBUS_TYPE_UINT32,
&value))
{
abandon_asv_entry (arr_iter, &entry_iter, &var_iter);
goto oom;
}
if (!close_asv_entry (arr_iter, &entry_iter, &var_iter))
goto oom;
return TRUE;
oom:
abandon_asv_reply (iter, arr_iter);
return FALSE;
}
static dbus_bool_t
asv_add_string (DBusMessageIter *iter,
DBusMessageIter *arr_iter,
const char *key,
const char *value)
{
DBusMessageIter entry_iter, var_iter;
if (!open_asv_entry (arr_iter, &entry_iter, key, DBUS_TYPE_STRING_AS_STRING,
&var_iter))
goto oom;
if (!dbus_message_iter_append_basic (&var_iter, DBUS_TYPE_STRING,
&value))
{
abandon_asv_entry (arr_iter, &entry_iter, &var_iter);
goto oom;
}
if (!close_asv_entry (arr_iter, &entry_iter, &var_iter))
goto oom;
return TRUE;
oom:
abandon_asv_reply (iter, arr_iter);
return FALSE;
}
dbus_bool_t
bus_stats_handle_get_stats (DBusConnection *connection,
BusTransaction *transaction,
DBusMessage *message,
DBusError *error)
{
BusConnections *connections;
DBusMessage *reply = NULL;
DBusMessageIter iter, arr_iter;
static dbus_uint32_t stats_serial = 0;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
connections = bus_transaction_get_connections (transaction);
reply = new_asv_reply (message, &iter, &arr_iter);
if (reply == NULL)
goto oom;
if (!asv_add_uint32 (&iter, &arr_iter, "Serial", stats_serial++))
goto oom;
if (!close_asv_reply (&iter, &arr_iter))
goto oom;
if (!bus_transaction_send_from_driver (transaction, connection, reply))
goto oom;
dbus_message_unref (reply);
return TRUE;
oom:
if (reply != NULL)
dbus_message_unref (reply);
BUS_SET_OOM (error);
return FALSE;
}
dbus_bool_t
bus_stats_handle_get_connection_stats (DBusConnection *caller_connection,
BusTransaction *transaction,
DBusMessage *message,
DBusError *error)
{
const char *bus_name = NULL;
DBusString bus_name_str;
DBusMessage *reply = NULL;
DBusMessageIter iter, arr_iter;
static dbus_uint32_t stats_serial = 0;
dbus_uint32_t in_messages, in_bytes, in_fds;
dbus_uint32_t out_messages, out_bytes, out_fds;
BusRegistry *registry;
BusService *service;
DBusConnection *stats_connection;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
registry = bus_connection_get_registry (caller_connection);
if (! dbus_message_get_args (message, error,
DBUS_TYPE_STRING, &bus_name,
DBUS_TYPE_INVALID))
return FALSE;
_dbus_string_init_const (&bus_name_str, bus_name);
service = bus_registry_lookup (registry, &bus_name_str);
if (service == NULL)
{
dbus_set_error (error, DBUS_ERROR_NAME_HAS_NO_OWNER,
"Bus name '%s' has no owner", bus_name);
return FALSE;
}
stats_connection = bus_service_get_primary_owners_connection (service);
_dbus_assert (stats_connection != NULL);
reply = new_asv_reply (message, &iter, &arr_iter);
if (reply == NULL)
goto oom;
if (!asv_add_uint32 (&iter, &arr_iter, "Serial", stats_serial++) ||
!asv_add_string (&iter, &arr_iter, "UniqueName",
bus_connection_get_name (stats_connection)))
goto oom;
if (!close_asv_reply (&iter, &arr_iter))
goto oom;
if (!bus_transaction_send_from_driver (transaction, caller_connection,
reply))
goto oom;
dbus_message_unref (reply);
return TRUE;
oom:
if (reply != NULL)
dbus_message_unref (reply);
BUS_SET_OOM (error);
return FALSE;
}
#endif
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