dbus-errors.c
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-errors.c Error reporting
*
* Copyright (C) 2002, 2004 Red Hat Inc.
* Copyright (C) 2003 CodeFactory AB
*
* 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 "dbus-errors.h"
#include "dbus-internals.h"
#include "dbus-string.h"
#include "dbus-protocol.h"
#include <stdarg.h>
#include <string.h>
typedef struct
{
char *name;
char *message;
unsigned int const_message : 1;
unsigned int dummy2 : 1;
unsigned int dummy3 : 1;
unsigned int dummy4 : 1;
unsigned int dummy5 : 1;
void *padding1;
} DBusRealError;
_DBUS_STATIC_ASSERT (sizeof (DBusRealError) == sizeof (DBusError));
static const char*
message_from_error (const char *error)
{
if (strcmp (error, DBUS_ERROR_FAILED) == 0)
return "Unknown error";
else if (strcmp (error, DBUS_ERROR_NO_MEMORY) == 0)
return "Not enough memory available";
else if (strcmp (error, DBUS_ERROR_IO_ERROR) == 0)
return "Error reading or writing data";
else if (strcmp (error, DBUS_ERROR_BAD_ADDRESS) == 0)
return "Could not parse address";
else if (strcmp (error, DBUS_ERROR_NOT_SUPPORTED) == 0)
return "Feature not supported";
else if (strcmp (error, DBUS_ERROR_LIMITS_EXCEEDED) == 0)
return "Resource limits exceeded";
else if (strcmp (error, DBUS_ERROR_ACCESS_DENIED) == 0)
return "Permission denied";
else if (strcmp (error, DBUS_ERROR_AUTH_FAILED) == 0)
return "Could not authenticate to server";
else if (strcmp (error, DBUS_ERROR_NO_SERVER) == 0)
return "No server available at address";
else if (strcmp (error, DBUS_ERROR_TIMEOUT) == 0)
return "Connection timed out";
else if (strcmp (error, DBUS_ERROR_NO_NETWORK) == 0)
return "Network unavailable";
else if (strcmp (error, DBUS_ERROR_ADDRESS_IN_USE) == 0)
return "Address already in use";
else if (strcmp (error, DBUS_ERROR_DISCONNECTED) == 0)
return "Disconnected.";
else if (strcmp (error, DBUS_ERROR_INVALID_ARGS) == 0)
return "Invalid arguments.";
else if (strcmp (error, DBUS_ERROR_NO_REPLY) == 0)
return "Did not get a reply message.";
else if (strcmp (error, DBUS_ERROR_FILE_NOT_FOUND) == 0)
return "File doesn't exist.";
else if (strcmp (error, DBUS_ERROR_OBJECT_PATH_IN_USE) == 0)
return "Object path already in use";
else
return error;
}
/* End of internals */
void
dbus_error_init (DBusError *error)
{
DBusRealError *real;
_dbus_return_if_fail (error != NULL);
_dbus_assert (sizeof (DBusError) == sizeof (DBusRealError));
real = (DBusRealError *)error;
real->name = NULL;
real->message = NULL;
real->const_message = TRUE;
}
void
dbus_error_free (DBusError *error)
{
DBusRealError *real;
_dbus_return_if_fail (error != NULL);
real = (DBusRealError *)error;
if (!real->const_message)
{
dbus_free (real->name);
dbus_free (real->message);
}
dbus_error_init (error);
}
void
dbus_set_error_const (DBusError *error,
const char *name,
const char *message)
{
DBusRealError *real;
_dbus_return_if_error_is_set (error);
_dbus_return_if_fail (name != NULL);
if (error == NULL)
return;
_dbus_assert (error->name == NULL);
_dbus_assert (error->message == NULL);
if (message == NULL)
message = message_from_error (name);
real = (DBusRealError *)error;
real->name = (char*) name;
real->message = (char *)message;
real->const_message = TRUE;
}
void
dbus_move_error (DBusError *src,
DBusError *dest)
{
_dbus_return_if_error_is_set (dest);
if (dest)
{
dbus_error_free (dest);
*dest = *src;
dbus_error_init (src);
}
else
dbus_error_free (src);
}
dbus_bool_t
dbus_error_has_name (const DBusError *error,
const char *name)
{
_dbus_return_val_if_fail (error != NULL, FALSE);
_dbus_return_val_if_fail (name != NULL, FALSE);
_dbus_assert ((error->name != NULL && error->message != NULL) ||
(error->name == NULL && error->message == NULL));
if (error->name != NULL)
{
DBusString str1, str2;
_dbus_string_init_const (&str1, error->name);
_dbus_string_init_const (&str2, name);
return _dbus_string_equal (&str1, &str2);
}
else
return FALSE;
}
dbus_bool_t
dbus_error_is_set (const DBusError *error)
{
_dbus_return_val_if_fail (error != NULL, FALSE);
_dbus_assert ((error->name != NULL && error->message != NULL) ||
(error->name == NULL && error->message == NULL));
return error->name != NULL;
}
void
dbus_set_error (DBusError *error,
const char *name,
const char *format,
...)
{
DBusRealError *real;
DBusString str;
va_list args;
if (error == NULL)
return;
/* it's a bug to pile up errors */
_dbus_return_if_error_is_set (error);
_dbus_return_if_fail (name != NULL);
_dbus_assert (error->name == NULL);
_dbus_assert (error->message == NULL);
if (!_dbus_string_init (&str))
goto nomem;
if (format == NULL)
{
if (!_dbus_string_append (&str,
message_from_error (name)))
{
_dbus_string_free (&str);
va_end (args);
goto nomem;
}
}
else
{
va_start (args, format);
if (!_dbus_string_append_printf_valist (&str, format, args))
{
_dbus_string_free (&str);
va_end (args);
goto nomem;
}
va_end (args);
}
real = (DBusRealError *)error;
if (!_dbus_string_steal_data (&str, &real->message))
{
_dbus_string_free (&str);
goto nomem;
}
_dbus_string_free (&str);
real->name = _dbus_strdup (name);
if (real->name == NULL)
{
dbus_free (real->message);
real->message = NULL;
goto nomem;
}
real->const_message = FALSE;
return;
nomem:
_DBUS_SET_OOM (error);
}
/* End public API */