/**
* deletes the noncefile and frees the DBusNonceFile object.
*
* @param noncefile the nonce file to delete. Contents will be freed.
* @param error error details if the nonce file could not be deleted
* @return TRUE
*/
dbus_bool_t
_dbus_noncefile_delete (DBusNonceFile *noncefile,
DBusError *error)
{
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_delete_directory (&noncefile->dir, error);
_dbus_string_free (&noncefile->dir);
_dbus_string_free (&noncefile->path);
return TRUE;
}
/**
* deletes the noncefile and frees the DBusNonceFile object.
*
* If noncefile_location points to #NULL, nothing is freed or deleted,
* similar to dbus_error_free().
*
* @param noncefile_location the nonce file to delete. Contents will be freed and cleared to #NULL.
* @param error error details if the nonce file could not be deleted
* @return TRUE
*/
dbus_bool_t
_dbus_noncefile_delete (DBusNonceFile **noncefile_location,
DBusError *error)
{
DBusNonceFile *noncefile;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_assert (noncefile_location != NULL);
noncefile = *noncefile_location;
*noncefile_location = NULL;
if (noncefile == NULL)
{
/* Nothing to do */
return TRUE;
}
_dbus_delete_directory (&noncefile->dir, error);
_dbus_string_free (&noncefile->dir);
_dbus_string_free (&noncefile->path);
dbus_free (noncefile);
return TRUE;
}
static dbus_bool_t
do_noncefile_create (DBusNonceFile *noncefile,
DBusError *error,
dbus_bool_t use_subdir)
{
dbus_bool_t ret;
DBusString randomStr;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_assert (noncefile);
if (!_dbus_string_init (&randomStr))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_generate_random_ascii (&randomStr, 8))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_string_init (&noncefile->dir)
|| !_dbus_string_append (&noncefile->dir, _dbus_get_tmpdir()))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (use_subdir)
{
if (!_dbus_string_append (&noncefile->dir, "/dbus_nonce-")
|| !_dbus_string_append (&noncefile->dir, _dbus_string_get_const_data (&randomStr)) )
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_string_init (&noncefile->path)
|| !_dbus_string_copy (&noncefile->dir, 0, &noncefile->path, 0)
|| !_dbus_string_append (&noncefile->dir, "/nonce"))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_create_directory (&noncefile->dir, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
goto on_error;
}
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
}
else
{
if (!_dbus_string_init (&noncefile->path)
|| !_dbus_string_copy (&noncefile->dir, 0, &noncefile->path, 0)
|| !_dbus_string_append (&noncefile->path, "/dbus_nonce-")
|| !_dbus_string_append (&noncefile->path, _dbus_string_get_const_data (&randomStr)))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
}
if (!generate_and_write_nonce (&noncefile->path, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
if (use_subdir)
_dbus_delete_directory (&noncefile->dir, NULL); //we ignore possible errors deleting the dir and return the write error instead
goto on_error;
}
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_string_free (&randomStr);
return TRUE;
on_error:
if (use_subdir)
_dbus_delete_directory (&noncefile->dir, NULL);
_dbus_string_free (&noncefile->dir);
_dbus_string_free (&noncefile->path);
_dbus_string_free (&randomStr);
return FALSE;
}
static dbus_bool_t
do_noncefile_create (DBusNonceFile **noncefile_out,
DBusError *error,
dbus_bool_t use_subdir)
{
DBusNonceFile *noncefile = NULL;
DBusString randomStr;
const char *tmp;
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
_dbus_assert (noncefile_out != NULL);
_dbus_assert (*noncefile_out == NULL);
noncefile = dbus_new0 (DBusNonceFile, 1);
if (noncefile == NULL)
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
return FALSE;
}
/* Make it valid to "free" these even if _dbus_string_init() runs
* out of memory: see comment in do_check_nonce() */
_dbus_string_init_const (&randomStr, "");
_dbus_string_init_const (&noncefile->dir, "");
_dbus_string_init_const (&noncefile->path, "");
if (!_dbus_string_init (&randomStr))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_generate_random_ascii (&randomStr, 8, error))
{
goto on_error;
}
tmp = _dbus_get_tmpdir ();
if (!_dbus_string_init (&noncefile->dir)
|| tmp == NULL
|| !_dbus_string_append (&noncefile->dir, tmp))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (use_subdir)
{
if (!_dbus_string_append (&noncefile->dir, "/dbus_nonce-")
|| !_dbus_string_append (&noncefile->dir, _dbus_string_get_const_data (&randomStr)) )
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_string_init (&noncefile->path)
|| !_dbus_string_copy (&noncefile->dir, 0, &noncefile->path, 0)
|| !_dbus_string_append (&noncefile->path, "/nonce"))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
if (!_dbus_create_directory (&noncefile->dir, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
goto on_error;
}
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
}
else
{
if (!_dbus_string_init (&noncefile->path)
|| !_dbus_string_copy (&noncefile->dir, 0, &noncefile->path, 0)
|| !_dbus_string_append (&noncefile->path, "/dbus_nonce-")
|| !_dbus_string_append (&noncefile->path, _dbus_string_get_const_data (&randomStr)))
{
dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
goto on_error;
}
}
if (!generate_and_write_nonce (&noncefile->path, error))
{
_DBUS_ASSERT_ERROR_IS_SET (error);
if (use_subdir)
_dbus_delete_directory (&noncefile->dir, NULL); //we ignore possible errors deleting the dir and return the write error instead
goto on_error;
}
_DBUS_ASSERT_ERROR_IS_CLEAR (error);
*noncefile_out = noncefile;
_dbus_string_free (&randomStr);
return TRUE;
on_error:
if (use_subdir)
_dbus_delete_directory (&noncefile->dir, NULL);
_dbus_string_free (&noncefile->dir);
_dbus_string_free (&noncefile->path);
dbus_free (noncefile);
_dbus_string_free (&randomStr);
return FALSE;
}
