/usr/include/nih-dbus/test_dbus.h is in libnih-dbus-dev 1.0.3-4.3ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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*
* Copyright © 2009 Scott James Remnant <scott@netsplit.com>.
* Copyright © 2009 Canonical Ltd.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2, as
* published by the Free Software Foundation.
*
* 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.
*/
#ifndef NIH_TEST_DBUS_H
#define NIH_TEST_DBUS_H
#include <sys/types.h>
#include <sys/wait.h>
#include <assert.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <dbus/dbus.h>
/**
* TEST_DBUS:
* @_pid: variable to store pid in.
*
* Spawns a D-Bus bus daemon which may be used for testing purposes. You
* may create connections to the daemon with either the system bus or session
* bus addresses, which will both contain its address; alternatively use
* TEST_DBUS_OPEN() to establish a connection.
*
* The pid of the daemon process is stored in @_pid.
*
* The daemon should be killed with TEST_DBUS_END() once you have finished
* with it.
**/
#define TEST_DBUS(_pid) \
do { \
int _test_fds[2]; \
assert0 (pipe (_test_fds)); \
assert ((_pid = fork ()) >= 0); \
if (_pid > 0) { \
char _test_address[128] = { 0 }; \
close (_test_fds[1]); \
assert (read (_test_fds[0], _test_address, \
sizeof (_test_address)) > 0); \
close (_test_fds[0]); \
\
while (strrchr (_test_address, '\n')) \
*(strrchr (_test_address, '\n')) = '\0'; \
\
assert0 (setenv ("DBUS_SYSTEM_BUS_ADDRESS", \
_test_address, TRUE)); \
assert0 (setenv ("DBUS_SESSION_BUS_ADDRESS", \
_test_address, TRUE)); \
} else if (_pid == 0) { \
close (_test_fds[0]); \
assert (dup2 (_test_fds[1], STDOUT_FILENO) >= 0); \
assert0 (execlp ("dbus-daemon", "test_dbus-daemon", \
"--session", "--print-address", NULL)); \
exit (255); \
} \
} while (0)
/**
* TEST_DBUS_OPEN:
* @_conn: variable to store connection in.
*
* Creates a new connection to the temporary D-Bus server, ensuring that
* it won't exit on disconnect and removing the NameAcquired signal from
* the incoming queue.
*
* The connection may be closed again using TEST_DBUS_CLOSE().
**/
#define TEST_DBUS_OPEN(_conn) \
do { \
DBusMessage *_test_message; \
\
assert ((_conn = dbus_bus_get_private (DBUS_BUS_SYSTEM, NULL)) != NULL); \
dbus_connection_set_exit_on_disconnect (_conn, FALSE); \
\
while (! (_test_message = dbus_connection_pop_message (_conn))) \
dbus_connection_read_write (_conn, -1); \
\
assert (dbus_message_is_signal ( \
_test_message, DBUS_INTERFACE_DBUS, \
"NameAcquired")); \
\
dbus_message_unref (_test_message); \
} while (0)
/**
* TEST_DBUS_MESSAGE:
* @_conn: connection,
* @_message: variable to store message in.
*
* Waits for a single message to arrive and pops it from the incoming queue,
* placing it in @_message.
**/
#define TEST_DBUS_MESSAGE(_conn, _message) \
while (! (_message = dbus_connection_pop_message (_conn))) \
dbus_connection_read_write (_conn, -1);
/**
* TEST_DBUS_DISPATCH:
* @_conn: connection.
*
* Reads and writes from the connection @_conn and dispatches whatever
* messages were received or sent in that pulse.
**/
#define TEST_DBUS_DISPATCH(_conn) \
do { \
dbus_connection_read_write (_conn, -1); \
while (dbus_connection_dispatch (_conn) != DBUS_DISPATCH_COMPLETE) \
; \
} while (0)
/**
* TEST_DBUS_CLOSE:
* @_conn: connection to close.
*
* Closes the connection opened with TEST_DBUS_OPEN().
**/
#define TEST_DBUS_CLOSE(_conn) \
do { \
dbus_connection_close (_conn); \
dbus_connection_unref (_conn); \
} while (0)
/**
* TEST_DBUS_END:
* @_pid: pid of dbus daemon.
*
* Terminates a dbus daemon that has been used for testing.
**/
#define TEST_DBUS_END(_pid) \
do { \
kill (_pid, SIGTERM); \
waitpid (_pid, NULL, 0); \
unsetenv ("DBUS_SESSION_BUS_ADDRESS"); \
unsetenv ("DBUS_SYSTEM_BUS_ADDRESS"); \
} while (0)
#endif /* NIH_TEST_DBUS_H */
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