131 lines
4.6 KiB
Python
131 lines
4.6 KiB
Python
# Copyright (C) 2006-2007 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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"""D-bus service providing access to the shell's functionality"""
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import dbus
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import os
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_DBUS_SERVICE = "org.laptop.Shell"
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_DBUS_SHELL_IFACE = "org.laptop.Shell"
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_DBUS_OWNER_IFACE = "org.laptop.Shell.Owner"
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_DBUS_PATH = "/org/laptop/Shell"
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_DBUS_RAINBOW_IFACE = "org.laptop.security.Rainbow"
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class ShellService(dbus.service.Object):
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"""Provides d-bus service to script the shell's operations
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Uses a shell_model object to observe events such as changes to:
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* nickname
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* colour
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* icon
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* currently active activity
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and pass the event off to the methods in the dbus signature.
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Key method here at the moment is add_bundle, which is used to
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do a run-time registration of a bundle using it's application path.
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XXX At the moment the d-bus service methods do not appear to do
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anything other than add_bundle
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"""
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_rainbow = None
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def __init__(self, shell):
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self._shell = shell
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self._shell_model = shell.get_model()
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self._owner = self._shell_model.get_owner()
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self._owner.connect('nick-changed', self._owner_nick_changed_cb)
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self._owner.connect('icon-changed', self._owner_icon_changed_cb)
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self._owner.connect('color-changed', self._owner_color_changed_cb)
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self._home_model = self._shell_model.get_home()
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self._home_model.connect('active-activity-changed',
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self._cur_activity_changed_cb)
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bus = dbus.SessionBus()
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bus_name = dbus.service.BusName(_DBUS_SERVICE, bus=bus)
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dbus.service.Object.__init__(self, bus_name, _DBUS_PATH)
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@dbus.service.method(_DBUS_SHELL_IFACE,
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in_signature="s", out_signature="b")
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def ActivateActivity(self, activity_id):
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host = self._shell.get_activity(activity_id)
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if host:
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host.present()
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return True
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return False
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@dbus.service.method(_DBUS_SHELL_IFACE,
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in_signature="ss", out_signature="")
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def NotifyLaunch(self, bundle_id, activity_id):
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self._shell.notify_launch(bundle_id, activity_id)
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@dbus.service.method(_DBUS_SHELL_IFACE,
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in_signature="s", out_signature="")
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def NotifyLaunchFailure(self, activity_id):
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self._shell.notify_launch_failure(activity_id)
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@dbus.service.signal(_DBUS_OWNER_IFACE, signature="s")
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def ColorChanged(self, color):
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pass
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def _owner_color_changed_cb(self, new_color):
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self.ColorChanged(new_color.to_string())
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@dbus.service.signal(_DBUS_OWNER_IFACE, signature="s")
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def NickChanged(self, nick):
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pass
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def _owner_nick_changed_cb(self, new_nick):
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self.NickChanged(new_nick)
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@dbus.service.signal(_DBUS_OWNER_IFACE, signature="ay")
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def IconChanged(self, icon_data):
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pass
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def _owner_icon_changed_cb(self, new_icon):
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self.IconChanged(dbus.ByteArray(new_icon))
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def _get_rainbow_service(self):
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"""Lazily initializes an interface to the Rainbow security daemon."""
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if self._rainbow is None:
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system_bus = dbus.SystemBus()
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object = system_bus.get_object(_DBUS_RAINBOW_IFACE, '/',
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follow_name_owner_changes=True)
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self._rainbow = dbus.Interface(object,
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dbus_interface=_DBUS_RAINBOW_IFACE)
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return self._rainbow
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@dbus.service.signal(_DBUS_OWNER_IFACE, signature="s")
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def CurrentActivityChanged(self, activity_id):
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if os.path.exists('/etc/olpc-security'):
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self._get_rainbow_service().ChangeActivity(
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activity_id,
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dbus_interface=_DBUS_RAINBOW_IFACE)
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def _cur_activity_changed_cb(self, owner, new_activity):
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new_id = ""
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if new_activity:
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new_id = new_activity.get_activity_id()
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if new_id:
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self.CurrentActivityChanged(new_id)
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