257 lines
9.5 KiB
Python
257 lines
9.5 KiB
Python
"""Shell side object which manages request to start activity"""
|
|
# Copyright (C) 2006-2007 Red Hat, Inc.
|
|
#
|
|
# This library 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 2 of the License, or (at your option) any later version.
|
|
#
|
|
# This library 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
|
|
# Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public
|
|
# License along with this library; if not, write to the
|
|
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
# Boston, MA 02111-1307, USA.
|
|
|
|
import logging
|
|
import subprocess
|
|
|
|
import dbus
|
|
import gobject
|
|
import gtk
|
|
|
|
from sugar.presence import presenceservice
|
|
from sugar.activity.activityhandle import ActivityHandle
|
|
from sugar.activity import registry
|
|
from sugar.datastore import datastore
|
|
from sugar import util
|
|
from sugar import env
|
|
|
|
import os
|
|
|
|
# #3903 - this constant can be removed and assumed to be 1 when dbus-python
|
|
# 0.82.3 is the only version used
|
|
if dbus.version >= (0, 82, 3):
|
|
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1
|
|
else:
|
|
DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND = 1000
|
|
|
|
_SHELL_SERVICE = "org.laptop.Shell"
|
|
_SHELL_PATH = "/org/laptop/Shell"
|
|
_SHELL_IFACE = "org.laptop.Shell"
|
|
|
|
_DS_SERVICE = "org.laptop.sugar.DataStore"
|
|
_DS_INTERFACE = "org.laptop.sugar.DataStore"
|
|
_DS_PATH = "/org/laptop/sugar/DataStore"
|
|
|
|
_ACTIVITY_FACTORY_INTERFACE = "org.laptop.ActivityFactory"
|
|
|
|
_RAINBOW_SERVICE_NAME = "org.laptop.security.Rainbow"
|
|
_RAINBOW_ACTIVITY_FACTORY_PATH = "/"
|
|
_RAINBOW_ACTIVITY_FACTORY_INTERFACE = "org.laptop.security.Rainbow"
|
|
|
|
def create_activity_id():
|
|
"""Generate a new, unique ID for this activity"""
|
|
pservice = presenceservice.get_instance()
|
|
|
|
# create a new unique activity ID
|
|
i = 0
|
|
act_id = None
|
|
while i < 10:
|
|
act_id = util.unique_id()
|
|
i += 1
|
|
|
|
# check through network activities
|
|
found = False
|
|
activities = pservice.get_activities()
|
|
for act in activities:
|
|
if act_id == act.props.id:
|
|
found = True
|
|
break
|
|
if not found:
|
|
return act_id
|
|
raise RuntimeError("Cannot generate unique activity id.")
|
|
|
|
def get_environment(activity):
|
|
environ = os.environ.copy()
|
|
|
|
bin_path = os.path.join(activity.path, 'bin')
|
|
environ['SUGAR_BUNDLE_PATH'] = activity.path
|
|
environ['PATH'] = bin_path + ':' + environ['PATH']
|
|
|
|
return environ
|
|
|
|
def get_command(activity, activity_id=None, object_id=None, uri=None):
|
|
if not activity_id:
|
|
activity_id = create_activity_id()
|
|
|
|
command = activity.command
|
|
command += ' -b %s' % activity.bundle_id
|
|
command += ' -a %s' % activity_id
|
|
|
|
if object_id is not None:
|
|
command += ' -o %s' % object_id
|
|
if uri is not None:
|
|
command += ' -u %s' % uri
|
|
|
|
return command
|
|
|
|
def open_log_file(activity, activity_id):
|
|
for i in range(1, 100):
|
|
path = env.get_logs_path('%s-%s.log' % (activity.bundle_id, i))
|
|
if not os.path.exists(path):
|
|
return open(path, 'w')
|
|
|
|
class ActivityCreationHandler(gobject.GObject):
|
|
"""Sugar-side activity creation interface
|
|
|
|
This object uses a dbus method on the ActivityFactory
|
|
service to create the new activity. It generates
|
|
GObject events in response to the success/failure of
|
|
activity startup using callbacks to the service's
|
|
create call.
|
|
"""
|
|
|
|
def __init__(self, service_name, handle):
|
|
"""Initialise the handler
|
|
|
|
service_name -- the service name of the bundle factory
|
|
activity_handle -- stores the values which are to
|
|
be passed to the service to uniquely identify
|
|
the activity to be created and the sharing
|
|
service that may or may not be connected with it
|
|
|
|
sugar.activity.activityhandle.ActivityHandle instance
|
|
|
|
calls the "create" method on the service for this
|
|
particular activity type and registers the
|
|
_reply_handler and _error_handler methods on that
|
|
call's results.
|
|
|
|
The specific service which creates new instances of this
|
|
particular type of activity is created during the activity
|
|
registration process in shell bundle registry which creates
|
|
service definition files for each registered bundle type.
|
|
|
|
If the file '/etc/olpc-security' exists, then activity launching
|
|
will be delegated to the prototype 'Rainbow' security service.
|
|
"""
|
|
gobject.GObject.__init__(self)
|
|
self._service_name = service_name
|
|
self._handle = handle
|
|
|
|
bus = dbus.SessionBus()
|
|
|
|
bus_object = bus.get_object(_SHELL_SERVICE, _SHELL_PATH)
|
|
self._shell = dbus.Interface(bus_object, _SHELL_IFACE)
|
|
|
|
if handle.activity_id is not None and \
|
|
handle.object_id is None:
|
|
datastore = dbus.Interface(
|
|
bus.get_object(_DS_SERVICE, _DS_PATH), _DS_INTERFACE)
|
|
datastore.find({ 'activity_id': self._handle.activity_id }, [],
|
|
reply_handler=self._find_object_reply_handler,
|
|
error_handler=self._find_object_error_handler)
|
|
else:
|
|
self._launch_activity()
|
|
|
|
def _launch_activity(self):
|
|
if self._handle.activity_id != None:
|
|
self._shell.ActivateActivity(self._handle.activity_id,
|
|
reply_handler=self._activate_reply_handler,
|
|
error_handler=self._activate_error_handler)
|
|
else:
|
|
self._create_activity()
|
|
|
|
def _create_activity(self):
|
|
if self._handle.activity_id is None:
|
|
self._handle.activity_id = create_activity_id()
|
|
|
|
self._shell.NotifyLaunch(
|
|
self._service_name, self._handle.activity_id,
|
|
reply_handler=self._no_reply_handler,
|
|
error_handler=self._notify_launch_error_handler)
|
|
|
|
if not os.path.exists('/etc/olpc-security'):
|
|
activity_registry = registry.get_registry()
|
|
activity = activity_registry.get_activity(self._service_name)
|
|
if activity:
|
|
env = get_environment(activity)
|
|
log_file = open_log_file(activity, self._handle.activity_id)
|
|
command = get_command(activity, self._handle.activity_id,
|
|
self._handle.object_id,
|
|
self._handle.uri)
|
|
process = subprocess.Popen(command, env=env, shell=True,
|
|
cwd=activity.path, stdout=log_file,
|
|
stderr=log_file)
|
|
else:
|
|
system_bus = dbus.SystemBus()
|
|
factory = system_bus.get_object(_RAINBOW_SERVICE_NAME,
|
|
_RAINBOW_ACTIVITY_FACTORY_PATH)
|
|
stdio_paths = {'stdout': '/logs/stdout', 'stderr': '/logs/stderr'}
|
|
factory.CreateActivity(
|
|
self._service_name,
|
|
self._handle.get_dict(),
|
|
stdio_paths,
|
|
timeout=120 * DBUS_PYTHON_TIMEOUT_UNITS_PER_SECOND,
|
|
reply_handler=self._create_reply_handler,
|
|
error_handler=self._create_error_handler,
|
|
dbus_interface=_RAINBOW_ACTIVITY_FACTORY_INTERFACE)
|
|
|
|
def _no_reply_handler(self, *args):
|
|
pass
|
|
|
|
def _notify_launch_failure_error_handler(self, err):
|
|
logging.error('Notify launch failure failed %s' % err)
|
|
|
|
def _notify_launch_error_handler(self, err):
|
|
logging.debug('Notify launch failed %s' % err)
|
|
|
|
def _activate_reply_handler(self, activated):
|
|
if not activated:
|
|
self._create_activity()
|
|
|
|
def _activate_error_handler(self, err):
|
|
logging.error("Activity activation request failed %s" % err)
|
|
|
|
def _create_reply_handler(self, xid):
|
|
logging.debug("Activity created %s (%s)." %
|
|
(self._handle.activity_id, self._service_name))
|
|
|
|
def _create_error_handler(self, err):
|
|
logging.error("Couldn't create activity %s (%s): %s" %
|
|
(self._handle.activity_id, self._service_name, err))
|
|
self._shell.NotifyLaunchFailure(
|
|
self._handle.activity_id, reply_handler=self._no_reply_handler,
|
|
error_handler=self._notify_launch_failure_error_handler)
|
|
|
|
def _find_object_reply_handler(self, jobjects, count):
|
|
if count > 0:
|
|
if count > 1:
|
|
logging.debug("Multiple objects has the same activity_id.")
|
|
self._handle.object_id = jobjects[0]['uid']
|
|
self._create_activity()
|
|
|
|
def _find_object_error_handler(self, err):
|
|
logging.error("Datastore find failed %s" % err)
|
|
self._create_activity()
|
|
|
|
def create(service_name, activity_handle=None):
|
|
"""Create a new activity from its name."""
|
|
if not activity_handle:
|
|
activity_handle = ActivityHandle()
|
|
return ActivityCreationHandler(service_name, activity_handle)
|
|
|
|
def create_with_uri(service_name, uri):
|
|
"""Create a new activity and pass the uri as handle."""
|
|
activity_handle = ActivityHandle(uri=uri)
|
|
return ActivityCreationHandler(service_name, activity_handle)
|
|
|
|
def create_with_object_id(service_name, object_id):
|
|
"""Create a new activity and pass the object id as handle."""
|
|
activity_handle = ActivityHandle(object_id=object_id)
|
|
return ActivityCreationHandler(service_name, activity_handle)
|