/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
/* dbus-spawn-test.c
 *
 * Copyright (C) 2002, 2003, 2004  Red Hat, Inc.
 * Copyright (C) 2003 CodeFactory AB
 * Copyright (C) 2005 Novell, Inc.
 *
 * 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-spawn.h"
#include "dbus-sysdeps.h"
#include "dbus-test.h"

static char *
get_test_exec (const char *exe,
               DBusString *scratch_space)
{
  const char *dbus_test_exec;

  dbus_test_exec = _dbus_getenv ("DBUS_TEST_EXEC");

  if (dbus_test_exec == NULL)
    return NULL;

  if (!_dbus_string_init (scratch_space))
    return NULL;

  if (!_dbus_string_append_printf (scratch_space, "%s/%s%s",
                                   dbus_test_exec, exe, DBUS_EXEEXT))
    {
      _dbus_string_free (scratch_space);
      return NULL;
    }

  return _dbus_string_get_data (scratch_space);
}

static dbus_bool_t
check_spawn_nonexistent (void        *data,
                         dbus_bool_t  have_memory)
{
  static const char arg_does_not_exist[] = "/this/does/not/exist/32542sdgafgafdg";

  const char *argv[4] = { NULL, NULL, NULL, NULL };
  DBusBabysitter *sitter = NULL;
  DBusError error = DBUS_ERROR_INIT;

  /*** Test launching nonexistent binary */

  argv[0] = arg_does_not_exist;
  if (_dbus_spawn_async_with_babysitter (&sitter, "spawn_nonexistent",
                                         (char * const *) argv,
                                         NULL, DBUS_SPAWN_NONE, NULL, NULL,
                                         &error))
    {
      _dbus_babysitter_block_for_child_exit (sitter);
      _dbus_babysitter_set_child_exit_error (sitter, &error);
    }

  if (sitter)
    _dbus_babysitter_unref (sitter);

  if (!dbus_error_is_set (&error))
    {
      _dbus_warn ("Did not get an error launching nonexistent executable");
      return FALSE;
    }

  if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_EXEC_FAILED)))
    {
      _dbus_warn ("Not expecting error when launching nonexistent executable: %s: %s",
                  error.name, error.message);
      dbus_error_free (&error);
      return FALSE;
    }

  dbus_error_free (&error);

  return TRUE;
}

static dbus_bool_t
check_spawn_segfault (void        *data,
                      dbus_bool_t  have_memory)
{
  char *argv[4] = { NULL, NULL, NULL, NULL };
  DBusBabysitter *sitter = NULL;
  DBusError error = DBUS_ERROR_INIT;
  DBusString argv0;

  /*** Test launching segfault binary */

  argv[0] = get_test_exec ("test-segfault", &argv0);

  if (argv[0] == NULL)
    {
      /* OOM was simulated or DBUS_TEST_EXEC was unset; either is OK */
      return TRUE;
    }

  if (_dbus_spawn_async_with_babysitter (&sitter, "spawn_segfault", argv,
                                         NULL, DBUS_SPAWN_NONE, NULL, NULL,
                                         &error))
    {
      _dbus_babysitter_block_for_child_exit (sitter);
      _dbus_babysitter_set_child_exit_error (sitter, &error);
    }

  _dbus_string_free (&argv0);

  if (sitter)
    _dbus_babysitter_unref (sitter);

  if (!dbus_error_is_set (&error))
    {
      _dbus_warn ("Did not get an error launching segfaulting binary");
      return FALSE;
    }

  if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
#ifdef DBUS_WIN
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_EXITED)))
#else
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
#endif
    {
      _dbus_warn ("Not expecting error when launching segfaulting executable: %s: %s",
                  error.name, error.message);
      dbus_error_free (&error);
      return FALSE;
    }

  dbus_error_free (&error);

  return TRUE;
}

static dbus_bool_t
check_spawn_exit (void        *data,
                  dbus_bool_t  have_memory)
{
  char *argv[4] = { NULL, NULL, NULL, NULL };
  DBusBabysitter *sitter = NULL;
  DBusError error = DBUS_ERROR_INIT;
  DBusString argv0;

  /*** Test launching exit failure binary */

  argv[0] = get_test_exec ("test-exit", &argv0);

  if (argv[0] == NULL)
    {
      /* OOM was simulated or DBUS_TEST_EXEC was unset; either is OK */
      return TRUE;
    }

  if (_dbus_spawn_async_with_babysitter (&sitter, "spawn_exit", argv,
                                         NULL, DBUS_SPAWN_NONE, NULL, NULL,
                                         &error))
    {
      _dbus_babysitter_block_for_child_exit (sitter);
      _dbus_babysitter_set_child_exit_error (sitter, &error);
    }

  _dbus_string_free (&argv0);

  if (sitter)
    _dbus_babysitter_unref (sitter);

  if (!dbus_error_is_set (&error))
    {
      _dbus_warn ("Did not get an error launching binary that exited with failure code");
      return FALSE;
    }

  if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_EXITED)))
    {
      _dbus_warn ("Not expecting error when launching exiting executable: %s: %s",
                  error.name, error.message);
      dbus_error_free (&error);
      return FALSE;
    }

  dbus_error_free (&error);

  return TRUE;
}

static dbus_bool_t
check_spawn_and_kill (void        *data,
                      dbus_bool_t  have_memory)
{
  char *argv[4] = { NULL, NULL, NULL, NULL };
  DBusBabysitter *sitter = NULL;
  DBusError error = DBUS_ERROR_INIT;
  DBusString argv0;

  /*** Test launching sleeping binary then killing it */

  argv[0] = get_test_exec ("test-sleep-forever", &argv0);

  if (argv[0] == NULL)
    {
      /* OOM was simulated or DBUS_TEST_EXEC was unset; either is OK */
      return TRUE;
    }

  if (_dbus_spawn_async_with_babysitter (&sitter, "spawn_and_kill", argv,
                                         NULL, DBUS_SPAWN_NONE, NULL, NULL,
                                         &error))
    {
      _dbus_babysitter_kill_child (sitter);

      _dbus_babysitter_block_for_child_exit (sitter);

      _dbus_babysitter_set_child_exit_error (sitter, &error);
    }

  _dbus_string_free (&argv0);

  if (sitter)
    _dbus_babysitter_unref (sitter);

  if (!dbus_error_is_set (&error))
    {
      _dbus_warn ("Did not get an error after killing spawned binary");
      return FALSE;
    }

  if (!(dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY) ||
#ifdef DBUS_WIN
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_EXITED)))
#else
        dbus_error_has_name (&error, DBUS_ERROR_SPAWN_CHILD_SIGNALED)))
#endif
    {
      _dbus_warn ("Not expecting error when killing executable: %s: %s",
                  error.name, error.message);
      dbus_error_free (&error);
      return FALSE;
    }

  dbus_error_free (&error);

  return TRUE;
}

dbus_bool_t
_dbus_spawn_test (const char *test_data_dir)
{
  if (!_dbus_test_oom_handling ("spawn_nonexistent",
                                check_spawn_nonexistent,
                                NULL))
    return FALSE;

  if (!_dbus_test_oom_handling ("spawn_segfault",
                                check_spawn_segfault,
                                NULL))
    return FALSE;

  if (!_dbus_test_oom_handling ("spawn_exit",
                                check_spawn_exit,
                                NULL))
    return FALSE;

  if (!_dbus_test_oom_handling ("spawn_and_kill",
                                check_spawn_and_kill,
                                NULL))
    return FALSE;

  return TRUE;
}