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/* Targeted unit tests for OOM paths in DBusMessage
*
* Copyright © 2017 Collabora Ltd.
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation files
* (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, sublicense, and/or sell copies of the Software,
* and to permit persons to whom the Software is furnished to do so,
* subject to the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#include <config.h>
#include <string.h>
#include <glib.h>
#include <dbus/dbus.h>
#include "dbus/dbus-internals.h"
#include "dbus/dbus-pipe.h"
#include "test-utils-glib.h"
/* Return TRUE if the right thing happens, but the right thing might include
* OOM. */
static dbus_bool_t
test_array (void *contained_signature)
{
DBusMessage *m;
DBusMessageIter iter;
DBusMessageIter arr_iter;
dbus_bool_t arr_iter_open = FALSE;
DBusMessageIter inner_iter;
dbus_bool_t inner_iter_open = FALSE;
m = dbus_message_new_signal ("/", "a.b", "c");
if (m == NULL)
goto out;
dbus_message_iter_init_append (m, &iter);
/* open_container only opens the container if it succeeds */
if (!dbus_message_iter_open_container (&iter, DBUS_TYPE_ARRAY,
contained_signature,
&arr_iter))
goto out;
arr_iter_open = TRUE;
if (g_strcmp0 (contained_signature, "ai") == 0)
{
/* open_container only opens the container if it succeeds */
if (!dbus_message_iter_open_container (&arr_iter, DBUS_TYPE_ARRAY, "i",
&inner_iter))
goto out;
/* We do not set inner_iter_open to TRUE here because we would
* immediately set it to FALSE again */
/* close_container closes the container, even when it fails */
if (!dbus_message_iter_close_container (&arr_iter, &inner_iter))
goto out;
}
else if (g_strcmp0 (contained_signature, "{ss}") == 0)
{
const char *s = "hello";
/* open_container only opens the container if it succeeds */
if (!dbus_message_iter_open_container (&arr_iter, DBUS_TYPE_DICT_ENTRY,
NULL, &inner_iter))
goto out;
inner_iter_open = TRUE;
if (!dbus_message_iter_append_basic (&inner_iter, DBUS_TYPE_STRING, &s))
goto out;
if (!dbus_message_iter_append_basic (&inner_iter, DBUS_TYPE_STRING, &s))
goto out;
/* close_container closes the container, even when it fails */
inner_iter_open = FALSE;
if (!dbus_message_iter_close_container (&arr_iter, &inner_iter))
goto out;
}
else if (g_strcmp0 (contained_signature, "v") == 0)
{
dbus_bool_t yes = TRUE;
/* open_container only opens the container if it succeeds */
if (!dbus_message_iter_open_container (&arr_iter, DBUS_TYPE_VARIANT,
"b", &inner_iter))
goto out;
inner_iter_open = TRUE;
if (!dbus_message_iter_append_basic (&inner_iter, DBUS_TYPE_BOOLEAN,
&yes))
goto out;
/* close_container closes the container, even when it fails */
inner_iter_open = FALSE;
if (!dbus_message_iter_close_container (&arr_iter, &inner_iter))
goto out;
}
else
{
g_assert_not_reached ();
}
/* close_container closes the container, even when it fails */
arr_iter_open = FALSE;
if (!dbus_message_iter_close_container (&iter, &arr_iter))
goto out;
out:
if (inner_iter_open)
dbus_message_iter_abandon_container (&arr_iter, &inner_iter);
if (arr_iter_open)
dbus_message_iter_abandon_container (&iter, &arr_iter);
if (m != NULL)
dbus_message_unref (m);
dbus_shutdown ();
g_assert_cmpint (_dbus_get_malloc_blocks_outstanding (), ==, 0);
return !g_test_failed ();
}
/* Return TRUE if the right thing happens, but the right thing might include
* OOM or inability to pass fds. */
static dbus_bool_t
test_fd (void *ignored)
{
DBusMessage *m = NULL;
DBusPipe pipe;
_dbus_pipe_init_stdout (&pipe);
m = dbus_message_new_signal ("/", "a.b", "c");
if (m == NULL)
goto out;
if (!dbus_message_append_args (m,
DBUS_TYPE_UNIX_FD, &pipe.fd,
DBUS_TYPE_INVALID))
goto out;
out:
if (m != NULL)
dbus_message_unref (m);
dbus_shutdown ();
g_assert_cmpint (_dbus_get_malloc_blocks_outstanding (), ==, 0);
return !g_test_failed ();
}
typedef struct
{
const gchar *name;
DBusTestMemoryFunction function;
const void *data;
} OOMTestCase;
static void
test_oom_wrapper (gconstpointer data)
{
const OOMTestCase *test = data;
if (!_dbus_test_oom_handling (test->name, test->function,
(void *) test->data))
{
g_test_message ("OOM test failed");
g_test_fail ();
}
}
static GQueue *test_cases_to_free = NULL;
static void
add_oom_test (const gchar *name,
DBusTestMemoryFunction function,
const void *data)
{
/* By using GLib memory allocation here, we avoid being affected by
* dbus_shutdown() or contributing to
* _dbus_get_malloc_blocks_outstanding() */
OOMTestCase *test_case = g_new0 (OOMTestCase, 1);
test_case->name = name;
test_case->function = function;
test_case->data = data;
g_test_add_data_func (name, test_case, test_oom_wrapper);
g_queue_push_tail (test_cases_to_free, test_case);
}
int
main (int argc,
char **argv)
{
int ret;
test_init (&argc, &argv);
test_cases_to_free = g_queue_new ();
add_oom_test ("/message/array/array", test_array, "ai");
add_oom_test ("/message/array/dict", test_array, "{ss}");
add_oom_test ("/message/array/variant", test_array, "v");
add_oom_test ("/message/fd", test_fd, NULL);
ret = g_test_run ();
g_queue_free_full (test_cases_to_free, g_free);
return ret;
}
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