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616 lines
20 KiB
Python
616 lines
20 KiB
Python
# Copyright (C) 2007, Red Hat, Inc.
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# Copyright (C) 2007, Collabora Ltd.
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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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import os
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import gobject
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import dbus, dbus.service
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from ConfigParser import ConfigParser, NoOptionError
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from sugar import env, profile, util
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import logging
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import random
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_BUDDY_PATH = "/org/laptop/Sugar/Presence/Buddies/"
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_BUDDY_INTERFACE = "org.laptop.Sugar.Presence.Buddy"
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_OWNER_INTERFACE = "org.laptop.Sugar.Presence.Buddy.Owner"
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class NotFoundError(dbus.DBusException):
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def __init__(self):
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dbus.DBusException.__init__(self)
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self._dbus_error_name = _PRESENCE_INTERFACE + '.NotFound'
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class DBusGObjectMetaclass(dbus.service.InterfaceType, gobject.GObjectMeta): pass
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class DBusGObject(dbus.service.Object, gobject.GObject): __metaclass__ = DBusGObjectMetaclass
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class Buddy(DBusGObject):
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"""Represents another person on the network and keeps track of the
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activities and resources they make available for sharing."""
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__gsignals__ = {
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'validity-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([gobject.TYPE_BOOLEAN])),
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'property-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT])),
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'icon-changed': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([gobject.TYPE_PYOBJECT]))
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}
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__gproperties__ = {
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'key' : (str, None, None, None,
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gobject.PARAM_READWRITE | gobject.PARAM_CONSTRUCT_ONLY),
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'icon' : (object, None, None, gobject.PARAM_READWRITE),
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'nick' : (str, None, None, None, gobject.PARAM_READWRITE),
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'color' : (str, None, None, None, gobject.PARAM_READWRITE),
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'current-activity' : (str, None, None, None, gobject.PARAM_READWRITE),
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'valid' : (bool, None, None, False, gobject.PARAM_READABLE),
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'owner' : (bool, None, None, False, gobject.PARAM_READABLE)
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}
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def __init__(self, bus_name, object_id, **kwargs):
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if not bus_name:
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raise ValueError("DBus bus name must be valid")
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if not object_id or not isinstance(object_id, int):
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raise ValueError("object id must be a valid number")
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self._bus_name = bus_name
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self._object_id = object_id
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self._object_path = _BUDDY_PATH + str(self._object_id)
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dbus.service.Object.__init__(self, self._bus_name, self._object_path)
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self._activities = {} # Activity ID -> Activity
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self.handles = {} # tp client -> handle
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self._valid = False
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self._owner = False
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self._key = None
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self._icon = ''
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self._current_activity = None
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self._nick = None
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self._color = None
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if not kwargs.get("key"):
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raise ValueError("key required")
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gobject.GObject.__init__(self, **kwargs)
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def do_get_property(self, pspec):
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if pspec.name == "key":
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return self._key
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elif pspec.name == "icon":
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return self._icon
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elif pspec.name == "nick":
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return self._nick
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elif pspec.name == "color":
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return self._color
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elif pspec.name == "current-activity":
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if not self._current_activity:
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return None
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if not self._activities.has_key(self._current_activity):
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return None
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return self._current_activity
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elif pspec.name == "valid":
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return self._valid
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elif pspec.name == "owner":
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return self._owner
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def do_set_property(self, pspec, value):
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if pspec.name == "icon":
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if str(value) != self._icon:
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self._icon = str(value)
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self.IconChanged(self._icon)
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self.emit('icon-changed', self._icon)
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elif pspec.name == "nick":
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self._nick = value
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elif pspec.name == "color":
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self._color = value
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elif pspec.name == "current-activity":
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self._current_activity = value
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elif pspec.name == "key":
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self._key = value
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self._update_validity()
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# dbus signals
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@dbus.service.signal(_BUDDY_INTERFACE,
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signature="ay")
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def IconChanged(self, icon_data):
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pass
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@dbus.service.signal(_BUDDY_INTERFACE,
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signature="o")
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def JoinedActivity(self, activity_path):
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pass
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@dbus.service.signal(_BUDDY_INTERFACE,
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signature="o")
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def LeftActivity(self, activity_path):
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pass
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@dbus.service.signal(_BUDDY_INTERFACE,
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signature="a{sv}")
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def PropertyChanged(self, updated):
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pass
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# dbus methods
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@dbus.service.method(_BUDDY_INTERFACE,
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in_signature="", out_signature="ay")
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def GetIcon(self):
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if not self.props.icon:
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return ""
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return dbus.ByteArray(self.props.icon)
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@dbus.service.method(_BUDDY_INTERFACE,
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in_signature="", out_signature="ao")
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def GetJoinedActivities(self):
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acts = []
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for act in self.get_joined_activities():
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acts.append(act.object_path())
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return acts
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@dbus.service.method(_BUDDY_INTERFACE,
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in_signature="", out_signature="a{sv}")
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def GetProperties(self):
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props = {}
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props['nick'] = self.props.nick
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props['owner'] = self.props.owner
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props['key'] = self.props.key
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props['color'] = self.props.color
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if self.props.current_activity:
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props['current-activity'] = self.props.current_activity
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else:
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props['current-activity'] = ""
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return props
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# methods
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def object_path(self):
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return dbus.ObjectPath(self._object_path)
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def add_activity(self, activity):
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actid = activity.props.id
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if self._activities.has_key(actid):
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return
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self._activities[actid] = activity
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if activity.props.valid:
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self.JoinedActivity(activity.object_path())
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def remove_activity(self, activity):
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actid = activity.props.id
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if not self._activities.has_key(actid):
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return
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del self._activities[actid]
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if activity.props.valid:
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self.LeftActivity(activity.object_path())
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def get_joined_activities(self):
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acts = []
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for act in self._activities.values():
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if act.props.valid:
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acts.append(act)
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return acts
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def set_properties(self, properties):
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changed = False
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if "nick" in properties.keys():
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nick = properties["nick"]
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if nick != self._nick:
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self._nick = nick
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changed = True
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if "color" in properties.keys():
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color = properties["color"]
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if color != self._color:
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self._color = color
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changed = True
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if "current-activity" in properties.keys():
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curact = properties["current-activity"]
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if curact != self._current_activity:
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self._current_activity = curact
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changed = True
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if not changed:
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return
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# Try emitting PropertyChanged before updating validity
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# to avoid leaking a PropertyChanged signal before the buddy is
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# actually valid the first time after creation
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if self._valid:
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self.PropertyChanged(properties)
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self.emit('property-changed', properties)
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self._update_validity()
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def _update_validity(self):
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try:
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old_valid = self._valid
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if self._color and self._nick and self._key:
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self._valid = True
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else:
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self._valid = False
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if old_valid != self._valid:
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self.emit("validity-changed", self._valid)
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except AttributeError:
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self._valid = False
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class GenericOwner(Buddy):
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__gtype_name__ = "GenericOwner"
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__gproperties__ = {
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'registered' : (bool, None, None, False, gobject.PARAM_READWRITE | gobject.PARAM_CONSTRUCT),
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'server' : (str, None, None, None, gobject.PARAM_READABLE | gobject.PARAM_CONSTRUCT),
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'key-hash' : (str, None, None, None, gobject.PARAM_READABLE | gobject.PARAM_CONSTRUCT)
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}
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def __init__(self, bus_name, object_id, **kwargs):
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self._server = 'olpc.collabora.co.uk'
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self._key_hash = None
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self._registered = False
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if kwargs.has_key("server"):
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self._server = kwargs["server"]
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del kwargs["server"]
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if kwargs.has_key("key_hash"):
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self._key_hash = kwargs["key_hash"]
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del kwargs["key_hash"]
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if kwargs.has_key("registered"):
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self._registered = kwargs["registered"]
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del kwargs["registered"]
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Buddy.__init__(self, bus_name, object_id, **kwargs)
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self._owner = True
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def get_registered(self):
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return self._registered
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def get_server(self):
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return self._server
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def get_key_hash(self):
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return self._key_hash
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def set_registered(self, registered):
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raise RuntimeError("Subclasses must implement")
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class ShellOwner(GenericOwner):
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"""Class representing the owner of the machine. This is the client
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portion of the Owner, paired with the server portion in Owner.py."""
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__gtype_name__ = "ShellOwner"
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_SHELL_SERVICE = "org.laptop.Shell"
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_SHELL_OWNER_INTERFACE = "org.laptop.Shell.Owner"
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_SHELL_PATH = "/org/laptop/Shell"
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def __init__(self, bus_name, object_id, test=False):
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server = profile.get_server()
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key_hash = profile.get_private_key_hash()
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registered = profile.get_server_registered()
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key = profile.get_pubkey()
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nick = profile.get_nick_name()
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color = profile.get_color().to_string()
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icon_file = os.path.join(env.get_profile_path(), "buddy-icon.jpg")
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f = open(icon_file, "r")
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icon = f.read()
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f.close()
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GenericOwner.__init__(self, bus_name, object_id, key=key, nick=nick,
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color=color, icon=icon, server=server, key_hash=key_hash,
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registered=registered)
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self._bus = dbus.SessionBus()
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self._bus.add_signal_receiver(self._name_owner_changed_handler,
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signal_name="NameOwnerChanged",
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dbus_interface="org.freedesktop.DBus")
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# Connect to the shell to get notifications on Owner object
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# property changes
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try:
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self._connect_to_shell()
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except dbus.DBusException:
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pass
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def set_registered(self, value):
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if value:
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profile.set_server_registered()
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def _name_owner_changed_handler(self, name, old, new):
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if name != self._SHELL_SERVICE:
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return
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if (old and len(old)) and (not new and not len(new)):
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# shell went away
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self._shell_owner = None
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elif (not old and not len(old)) and (new and len(new)):
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# shell started
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self._connect_to_shell()
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def _connect_to_shell(self):
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obj = self._bus.get_object(self._SHELL_SERVICE, self._SHELL_PATH)
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self._shell_owner = dbus.Interface(obj, self._SHELL_OWNER_INTERFACE)
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self._shell_owner.connect_to_signal('IconChanged', self._icon_changed_cb)
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self._shell_owner.connect_to_signal('ColorChanged', self._color_changed_cb)
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self._shell_owner.connect_to_signal('NickChanged', self._nick_changed_cb)
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self._shell_owner.connect_to_signal('CurrentActivityChanged',
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self._cur_activity_changed_cb)
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def _icon_changed_cb(self, icon):
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self.props.icon = icon
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def _color_changed_cb(self, color):
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props = {'color': color}
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self.set_properties(props)
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def _nick_changed_cb(self, nick):
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props = {'nick': nick}
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self.set_properties(props)
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def _cur_activity_changed_cb(self, activity_id):
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if not self._activities.has_key(activity_id):
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# This activity is local-only
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activity_id = None
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props = {'current-activity': activity_id}
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self.set_properties(props)
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class TestOwner(GenericOwner):
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"""Class representing the owner of the machine. This test owner
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changes random attributes periodically."""
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__gtype_name__ = "TestOwner"
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def __init__(self, bus_name, object_id, test_num):
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self._cp = ConfigParser()
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self._section = "Info"
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self._cfg_file = os.path.join(env.get_profile_path(), 'test-buddy-%d' % test_num)
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(pubkey, privkey, registered) = self._load_config()
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if not pubkey or not len(pubkey) or not privkey or not len(privkey):
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(pubkey, privkey) = _get_new_keypair(test_num)
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if not pubkey or not privkey:
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raise RuntimeError("Couldn't get or create test buddy keypair")
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self._save_config(pubkey, privkey, registered)
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privkey_hash = util.printable_hash(util._sha_data(privkey))
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nick = _get_random_name()
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from sugar.graphics import xocolor
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color = xocolor.XoColor().to_string()
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icon = _get_random_image()
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GenericOwner.__init__(self, bus_name, object_id, key=pubkey, nick=nick,
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color=color, icon=icon, registered=registered, key_hash=privkey_hash)
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# Change a random property ever 10 seconds
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gobject.timeout_add(10000, self._update_something)
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def set_registered(self, value):
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if value:
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self._registered = True
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def _load_config(self):
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if not os.path.exists(self._cfg_file):
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return (None, None, False)
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if not self._cp.read([self._cfg_file]):
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return (None, None, False)
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if not self._cp.has_section(self._section):
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return (None, None, False)
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try:
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pubkey = self._cp.get(self._section, "pubkey")
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privkey = self._cp.get(self._section, "privkey")
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registered = self._cp.get(self._section, "registered")
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return (pubkey, privkey, registered)
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except NoOptionError:
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pass
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return (None, None, False)
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def _save_config(self, pubkey, privkey, registered):
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# Save config again
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if not self._cp.has_section(self._section):
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self._cp.add_section(self._section)
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self._cp.set(self._section, "pubkey", pubkey)
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self._cp.set(self._section, "privkey", privkey)
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self._cp.set(self._section, "registered", registered)
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f = open(self._cfg_file, 'w')
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self._cp.write(f)
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f.close()
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def _update_something(self):
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it = random.randint(0, 10000) % 4
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if it == 0:
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self.props.icon = _get_random_image()
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elif it == 1:
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from sugar.graphics import xocolor
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props = {'color': xocolor.XoColor().to_string()}
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self.set_properties(props)
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elif it == 2:
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props = {'nick': _get_random_name()}
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self.set_properties(props)
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elif it == 3:
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bork = random.randint(25, 65)
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it = ""
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for i in range(0, bork):
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it += chr(random.randint(40, 127))
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from sugar import util
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props = {'current-activity': util.unique_id(it)}
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self.set_properties(props)
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return True
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def _hash_private_key(self):
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self.privkey_hash = None
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key_path = os.path.join(env.get_profile_path(), 'owner.key')
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try:
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f = open(key_path, "r")
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lines = f.readlines()
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f.close()
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except IOError, e:
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logging.error("Error reading private key: %s" % e)
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return
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key = ""
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for l in lines:
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l = l.strip()
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if l.startswith("-----BEGIN DSA PRIVATE KEY-----"):
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continue
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if l.startswith("-----END DSA PRIVATE KEY-----"):
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continue
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key += l
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if not len(key):
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logging.error("Error parsing public key.")
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# hash it
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key_hash = util._sha_data(key)
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self.privkey_hash = util.printable_hash(key_hash)
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def _extract_public_key(keyfile):
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try:
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f = open(keyfile, "r")
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lines = f.readlines()
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f.close()
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except IOError, e:
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logging.error("Error reading public key: %s" % e)
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return None
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# Extract the public key
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magic = "ssh-dss "
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key = ""
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for l in lines:
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l = l.strip()
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if not l.startswith(magic):
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continue
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key = l[len(magic):]
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break
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if not len(key):
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logging.error("Error parsing public key.")
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return None
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return key
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def _extract_private_key(keyfile):
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# Extract the private key
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try:
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f = open(keyfile, "r")
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lines = f.readlines()
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f.close()
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except IOError, e:
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|
logging.error("Error reading private key: %s" % e)
|
|
return None
|
|
|
|
key = ""
|
|
for l in lines:
|
|
l = l.strip()
|
|
if l.startswith("-----BEGIN DSA PRIVATE KEY-----"):
|
|
continue
|
|
if l.startswith("-----END DSA PRIVATE KEY-----"):
|
|
continue
|
|
key += l
|
|
if not len(key):
|
|
logging.error("Error parsing private key.")
|
|
return None
|
|
return key
|
|
|
|
def _get_new_keypair(num):
|
|
# Generate keypair
|
|
privkeyfile = os.path.join("/tmp", "test%d.key" % num)
|
|
pubkeyfile = os.path.join("/tmp", 'test%d.key.pub' % num)
|
|
|
|
# force-remove key files if they exist to ssh-keygen doesn't
|
|
# start asking questions
|
|
try:
|
|
os.remove(pubkeyfile)
|
|
os.remove(privkeyfile)
|
|
except OSError:
|
|
pass
|
|
|
|
cmd = "ssh-keygen -q -t dsa -f %s -C '' -N ''" % privkeyfile
|
|
import commands
|
|
print "Generating new keypair..."
|
|
(s, o) = commands.getstatusoutput(cmd)
|
|
print "Done."
|
|
pubkey = privkey = None
|
|
if s != 0:
|
|
logging.error("Could not generate key pair: %d (%s)" % (s, o))
|
|
else:
|
|
pubkey = _extract_public_key(pubkeyfile)
|
|
privkey = _extract_private_key(privkeyfile)
|
|
|
|
try:
|
|
os.remove(pubkeyfile)
|
|
os.remove(privkeyfile)
|
|
except OSError:
|
|
pass
|
|
return (pubkey, privkey)
|
|
|
|
def _get_random_name():
|
|
names = ["Liam", "Noel", "Guigsy", "Whitey", "Bonehead"]
|
|
return names[random.randint(0, len(names) - 1)]
|
|
|
|
def _get_random_image():
|
|
import cairo, math, random, gtk
|
|
|
|
def rand():
|
|
return random.random()
|
|
|
|
SIZE = 200
|
|
|
|
s = cairo.ImageSurface(cairo.FORMAT_ARGB32, SIZE, SIZE)
|
|
cr = cairo.Context(s)
|
|
|
|
# background gradient
|
|
cr.save()
|
|
g = cairo.LinearGradient(0, 0, 1, 1)
|
|
g.add_color_stop_rgba(1, rand(), rand(), rand(), rand())
|
|
g.add_color_stop_rgba(0, rand(), rand(), rand(), rand())
|
|
cr.set_source(g)
|
|
cr.rectangle(0, 0, SIZE, SIZE);
|
|
cr.fill()
|
|
cr.restore()
|
|
|
|
# random path
|
|
cr.set_line_width(10 * rand() + 5)
|
|
cr.move_to(SIZE * rand(), SIZE * rand())
|
|
cr.line_to(SIZE * rand(), SIZE * rand())
|
|
cr.rel_line_to(SIZE * rand() * -1, 0)
|
|
cr.close_path()
|
|
cr.stroke()
|
|
|
|
# a circle
|
|
cr.set_source_rgba(rand(), rand(), rand(), rand())
|
|
cr.arc(SIZE * rand(), SIZE * rand(), 100 * rand() + 30, 0, 2 * math.pi)
|
|
cr.fill()
|
|
|
|
# another circle
|
|
cr.set_source_rgba(rand(), rand(), rand(), rand())
|
|
cr.arc(SIZE * rand(), SIZE * rand(), 100 * rand() + 30, 0, 2 * math.pi)
|
|
cr.fill()
|
|
|
|
def img_convert_func(buf, data):
|
|
data[0] += buf
|
|
return True
|
|
|
|
data = [""]
|
|
pixbuf = gtk.gdk.pixbuf_new_from_data(s.get_data(), gtk.gdk.COLORSPACE_RGB,
|
|
True, 8, s.get_width(), s.get_height(), s.get_stride())
|
|
pixbuf.save_to_callback(img_convert_func, "jpeg", {"quality": "90"}, data)
|
|
del pixbuf
|
|
|
|
return str(data[0])
|
|
|