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"""Main entry point for running mock server."""
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 3 of the License, or (at your option) any
# later version. See http://www.gnu.org/copyleft/lgpl.html for the full text
# of the license.
__author__ = "Martin Pitt"
__copyright__ = """
(c) 2012 Canonical Ltd.
(c) 2017 - 2022 Martin Pitt <martin@piware.de>
"""
import argparse
import json
import os
import platform
import subprocess
import sys
import dbusmock.mockobject
import dbusmock.testcase
def parse_args():
"""Parse command line arguments"""
parser = argparse.ArgumentParser(description="mock D-Bus object")
parser.add_argument(
"-s",
"--system",
action="store_true",
help="put object(s) on system bus (default: session bus or template's SYSTEM_BUS flag)",
)
parser.add_argument(
"--session",
action="store_true",
help="put object(s) on session bus (default without template; overrides template's SYSTEM_BUS flag)",
)
parser.add_argument(
"-l",
"--logfile",
metavar="PATH",
help="path of log file",
)
parser.add_argument(
"-t",
"--template",
metavar="NAME",
help="template to load (instead of specifying name, path, interface)",
)
parser.add_argument(
"name",
metavar="NAME",
nargs="?",
help='D-Bus name to claim (e. g. "com.example.MyService") (if not using -t)',
)
parser.add_argument(
"path",
metavar="PATH",
nargs="?",
help="D-Bus object path for initial/main object (if not using -t)",
)
parser.add_argument(
"interface",
metavar="INTERFACE",
nargs="?",
help="main D-Bus interface name for initial object (if not using -t)",
)
parser.add_argument(
"-m",
"--is-object-manager",
action="store_true",
help="automatically implement the org.freedesktop.DBus.ObjectManager interface",
)
parser.add_argument(
"-p",
"--parameters",
help="JSON dictionary of parameters to pass to the template",
)
parser.add_argument(
"-e",
"--exec",
nargs=argparse.REMAINDER,
help="Command to run in the mock environment",
)
arguments = parser.parse_args()
if arguments.template:
if arguments.name or arguments.path or arguments.interface:
parser.error("--template and specifying NAME/PATH/INTERFACE are mutually exclusive")
else:
if not arguments.name or not arguments.path or not arguments.interface:
parser.error("Not using a template, you must specify NAME, PATH, and INTERFACE")
if arguments.system and arguments.session:
parser.error("--system and --session are mutually exclusive")
return arguments
if __name__ == "__main__":
import ctypes
import dbus.mainloop.glib
import dbus.service
args = parse_args()
dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
system_bus = args.system
if args.template:
module = dbusmock.mockobject.load_module(args.template)
args.name = module.BUS_NAME
args.path = module.MAIN_OBJ
if not args.session and not args.system:
system_bus = module.SYSTEM_BUS
if hasattr(module, "IS_OBJECT_MANAGER"):
args.is_object_manager = module.IS_OBJECT_MANAGER
else:
args.is_object_manager = False
if args.is_object_manager and not hasattr(module, "MAIN_IFACE"):
args.interface = dbusmock.mockobject.OBJECT_MANAGER_IFACE
else:
args.interface = module.MAIN_IFACE
bus = dbusmock.testcase.DBusTestCase.get_dbus(system_bus)
# quit mock when the bus is going down
should_run = {True}
bus.add_signal_receiver(
should_run.pop,
signal_name="Disconnected",
path="/org/freedesktop/DBus/Local",
dbus_interface="org.freedesktop.DBus.Local",
)
bus_name = dbus.service.BusName(args.name, bus, allow_replacement=True, replace_existing=True, do_not_queue=True)
main_object = dbusmock.mockobject.DBusMockObject(
bus_name, args.path, args.interface, {}, args.logfile, args.is_object_manager
)
parameters = None
if args.parameters:
try:
parameters = json.loads(args.parameters)
except ValueError as detail:
sys.stderr.write(f"Malformed JSON given for parameters: {detail}\n")
sys.exit(2)
if not isinstance(parameters, dict):
sys.stderr.write("JSON parameters must be a dictionary\n")
sys.exit(2)
if args.template:
main_object.AddTemplate(args.template, parameters)
if platform.system() == "Darwin":
libglib = ctypes.cdll.LoadLibrary("libglib-2.0.dylib")
else:
libglib = ctypes.cdll.LoadLibrary("libglib-2.0.so.0")
dbusmock.mockobject.objects[args.path] = main_object
if args.exec:
with subprocess.Popen(args.exec) as exec_proc:
exit_status = set()
@ctypes.CFUNCTYPE(None, ctypes.c_int, ctypes.c_int)
def on_process_watch(_pid, status):
"""Check if the launched process is still alive"""
if os.WIFEXITED(status):
exit_status.add(os.WEXITSTATUS(status))
else:
exit_status.add(1)
should_run.pop()
libglib.g_child_watch_add(exec_proc.pid, on_process_watch)
while should_run:
libglib.g_main_context_iteration(None, True)
try:
exec_proc.terminate()
exec_proc.wait()
except ProcessLookupError:
pass
sys.exit(exit_status.pop() if exit_status else exec_proc.returncode)
else:
while should_run:
libglib.g_main_context_iteration(None, True)
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