def setup_dbus_signals(self):
try:
from xpra.x11.dbus_common import init_system_bus
bus = init_system_bus()
self.system_bus = bus
log("setup_dbus_signals() system bus=%s", bus)
except Exception as e:
log.warn("dbus setup error: %s", e)
return
#the UPower signals:
try:
bus_name = 'org.freedesktop.UPower'
log("bus has owner(%s)=%s", bus_name, bus.name_has_owner(bus_name))
iface_name = 'org.freedesktop.UPower'
self.upower_resuming_match = bus.add_signal_receiver(self.resuming_callback, 'Resuming', iface_name, bus_name)
self.upower_sleeping_match = bus.add_signal_receiver(self.sleeping_callback, 'Sleeping', iface_name, bus_name)
eventlog("listening for 'Resuming' and 'Sleeping' signals on %s", iface_name)
except Exception as e:
eventlog("failed to setup UPower event listener: %s", e)
#the "logind" signals:
try:
bus_name = 'org.freedesktop.login1'
log("bus has owner(%s)=%s", bus_name, bus.name_has_owner(bus_name))
def sleep_event_handler(suspend):
if suspend:
self.sleeping_callback()
else:
self.resuming_callback()
iface_name = 'org.freedesktop.login1.Manager'
self.login1_match = bus.add_signal_receiver(sleep_event_handler, 'PrepareForSleep', iface_name, bus_name)
eventlog("listening for 'PrepareForSleep' signal on %s", iface_name)
except Exception as e:
eventlog("failed to setup login1 event listener: %s", e)
def init_dbus_listener():
if not CUPS_DBUS:
return False
global dbus_init
log("init_dbus_listener() dbus_init=%s", dbus_init)
if dbus_init is None:
try:
from xpra.x11.dbus_common import init_system_bus
system_bus = init_system_bus()
log("system bus: %s", system_bus)
sig_match = system_bus.add_signal_receiver(handle_dbus_signal, path=DBUS_PATH, dbus_interface=DBUS_IFACE)
log("system_bus.add_signal_receiver(..)=%s", sig_match)
dbus_init = True
except Exception:
if sys.platform.startswith("darwin"):
log("no dbus on osx")
else:
log.error("failed to initialize dbus cups event listener", exc_info=True)
dbus_init = False
return dbus_init
def init_dbus_listener():
if not CUPS_DBUS:
return False
global dbus_init
log("init_dbus_listener() dbus_init=%s", dbus_init)
if dbus_init is None:
try:
from xpra.x11.dbus_common import init_system_bus
system_bus = init_system_bus()
log("system bus: %s", system_bus)
sig_match = system_bus.add_signal_receiver(
handle_dbus_signal, path=DBUS_PATH, dbus_interface=DBUS_IFACE)
log("system_bus.add_signal_receiver(..)=%s", sig_match)
dbus_init = True
except Exception:
if sys.platform.startswith("darwin"):
log("no dbus on osx")
else:
log.error("failed to initialize dbus cups event listener",
exc_info=True)
dbus_init = False
return dbus_init
