static void
do_exec (int child_err_report_fd,
char * const *argv,
char * const *envp,
DBusSpawnChildSetupFunc child_setup,
void *user_data)
{
#ifdef DBUS_ENABLE_EMBEDDED_TESTS
int i, max_open;
#endif
_dbus_verbose_reset ();
_dbus_verbose ("Child process has PID " DBUS_PID_FORMAT "\n",
_dbus_getpid ());
if (child_setup)
(* child_setup) (user_data);
#ifdef DBUS_ENABLE_EMBEDDED_TESTS
max_open = sysconf (_SC_OPEN_MAX);
for (i = 3; i < max_open; i++)
{
int retval;
if (i == child_err_report_fd)
continue;
retval = fcntl (i, F_GETFD);
if (retval != -1 && !(retval & FD_CLOEXEC))
_dbus_warn ("Fd %d did not have the close-on-exec flag set!", i);
}
#endif
if (envp == NULL)
{
_dbus_assert (environ != NULL);
envp = environ;
}
execve (argv[0], argv, envp);
/* Exec failed */
write_err_and_exit (child_err_report_fd,
CHILD_EXEC_FAILED);
}
static void
do_exec (int child_err_report_fd,
char **argv,
DBusSpawnChildSetupFunc child_setup,
void *user_data)
{
#ifdef DBUS_BUILD_TESTS
int i, max_open;
#endif
_dbus_verbose_reset ();
_dbus_verbose ("Child process has PID %lu\n",
_dbus_getpid ());
if (child_setup)
(* child_setup) (user_data);
#ifdef DBUS_BUILD_TESTS
max_open = sysconf (_SC_OPEN_MAX);
for (i = 3; i < max_open; i++)
{
int retval;
if (i == child_err_report_fd)
continue;
retval = fcntl (i, F_GETFD);
if (retval != -1 && !(retval & FD_CLOEXEC))
_dbus_warn ("Fd %d did not have the close-on-exec flag set!\n", i);
}
#endif
#ifndef __SYMBIAN32__
execv (argv[0], argv);
#endif
/* Exec failed */
write_err_and_exit (child_err_report_fd,
CHILD_EXEC_FAILED);
}
/**
* Log a message to the system log file (e.g. syslog on Unix).
*
* @param severity a severity value
* @param msg a printf-style format string
* @param args arguments for the format string
*
* If the FATAL severity is given, this function will terminate the program
* with an error code.
*/
void
_dbus_system_logv (DBusSystemLogSeverity severity, const char *msg, va_list args)
{
#ifdef HAVE_SYSLOG_H
int flags;
switch (severity)
{
case DBUS_SYSTEM_LOG_INFO:
flags = LOG_DAEMON | LOG_NOTICE;
break;
case DBUS_SYSTEM_LOG_SECURITY:
flags = LOG_AUTH | LOG_NOTICE;
break;
case DBUS_SYSTEM_LOG_FATAL:
flags = LOG_DAEMON|LOG_CRIT;
break;
default:
return;
}
vsyslog (flags, msg, args);
#endif
#if !defined(HAVE_SYSLOG_H) || !HAVE_DECL_LOG_PERROR
{
/* vsyslog() won't write to stderr, so we'd better do it */
va_list tmp;
DBUS_VA_COPY (tmp, args);
fprintf (stderr, "dbus[" DBUS_PID_FORMAT "]: ", _dbus_getpid ());
vfprintf (stderr, msg, tmp);
fputc ('\n', stderr);
va_end (tmp);
}
#endif
if (severity == DBUS_SYSTEM_LOG_FATAL)
exit (1);
}
static int
run_session (const char *dbus_daemon,
const char *config_file,
char *bus_address,
char **argv,
int prog_arg)
{
char *dbus_daemon_argv[3];
int ret = 127;
HANDLE server_handle = NULL;
HANDLE app_handle = NULL;
DWORD exit_code;
DBusString argv_strings[4];
DBusString address;
char **env = NULL;
DBusHashTable *env_table = NULL;
long sec,usec;
dbus_bool_t result = TRUE;
char *key = NULL;
char *value = NULL;
if (!_dbus_string_init (&argv_strings[0]))
result = FALSE;
if (!_dbus_string_init (&argv_strings[1]))
result = FALSE;
if (!_dbus_string_init (&argv_strings[2]))
result = FALSE;
if (!_dbus_string_init (&address))
result = FALSE;
if (!result)
goto out;
/* run dbus daemon */
_dbus_get_real_time (&sec, &usec);
/* On Windows it's difficult to make use of --print-address to
* convert a listenable address into a connectable address, so instead
* we tell the temporary dbus-daemon to use the Windows autolaunch
* mechanism, with a unique scope that is shared by this dbus-daemon,
* the app process that defines its lifetime, and any other child
* processes they might have. */
_dbus_string_append_printf (&address, "autolaunch:scope=dbus-tmp-session-%ld%ld-" DBUS_PID_FORMAT, sec, usec, _dbus_getpid ());
_dbus_string_append_printf (&argv_strings[0], "%s", dbus_daemon);
if (config_file != NULL)
_dbus_string_append_printf (&argv_strings[1], "--config-file=%s", config_file);
else
_dbus_string_append_printf (&argv_strings[1], "--session");
_dbus_string_append_printf (&argv_strings[2], "--address=%s", _dbus_string_get_const_data (&address));
dbus_daemon_argv[0] = _dbus_string_get_data (&argv_strings[0]);
dbus_daemon_argv[1] = _dbus_string_get_data (&argv_strings[1]);
dbus_daemon_argv[2] = _dbus_string_get_data (&argv_strings[2]);
dbus_daemon_argv[3] = NULL;
server_handle = _dbus_spawn_program (dbus_daemon, dbus_daemon_argv, NULL);
if (!server_handle)
{
_dbus_win_stderr_win_error (me, "Could not start dbus daemon", GetLastError ());
goto out;
}
/* run app */
env = _dbus_get_environment ();
env_table = _dbus_hash_table_new (DBUS_HASH_STRING,
dbus_free,
dbus_free);
if (!_dbus_hash_table_from_array (env_table, env, '='))
{
goto out;
}
/* replace DBUS_SESSION_BUS_ADDRESS in environment */
if (!_dbus_string_steal_data (&address, &value))
goto out;
key = _dbus_strdup ("DBUS_SESSION_BUS_ADDRESS");
if (key == NULL)
goto out;
if (_dbus_hash_table_insert_string (env_table, key, value))
{
/* env_table took ownership, do not free separately */
key = NULL;
value = NULL;
}
else
{
/* we still own key and value, the cleanup code will free them */
goto out;
}
_dbus_hash_table_remove_string (env_table, "DBUS_STARTER_ADDRESS");
_dbus_hash_table_remove_string (env_table, "DBUS_STARTER_BUS_TYPE");
_dbus_hash_table_remove_string (env_table, "DBUS_SESSION_BUS_PID");
_dbus_hash_table_remove_string (env_table, "DBUS_SESSION_BUS_WINDOWID");
dbus_free_string_array (env);
env = _dbus_hash_table_to_array (env_table, '=');
if (!env)
goto out;
app_handle = _dbus_spawn_program (argv[prog_arg], argv + prog_arg, env);
if (!app_handle)
{
_dbus_win_stderr_win_error (me, "unable to start child process", GetLastError ());
goto out;
}
WaitForSingleObject (app_handle, INFINITE);
if (!GetExitCodeProcess (app_handle, &exit_code))
{
_dbus_win_stderr_win_error (me, "could not fetch exit code", GetLastError ());
goto out;
}
ret = exit_code;
out:
TerminateProcess (server_handle, 0);
if (server_handle != NULL)
CloseHandle (server_handle);
if (app_handle != NULL)
CloseHandle (app_handle);
_dbus_string_free (&argv_strings[0]);
_dbus_string_free (&argv_strings[1]);
_dbus_string_free (&argv_strings[2]);
_dbus_string_free (&address);
dbus_free_string_array (env);
if (env_table != NULL)
_dbus_hash_table_unref (env_table);
dbus_free (key);
dbus_free (value);
return ret;
}
