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|
#
# daemon.py
#
# Copyright (C) 2007-2009 Andrew Resch <andrewresch@gmail.com>
#
# Deluge is free software.
#
# You may redistribute it and/or modify it under the terms of the
# GNU General Public License, as published by the Free Software
# Foundation; either version 3 of the License, or (at your option)
# any later version.
#
# deluge 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with deluge. If not, write to:
# The Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor
# Boston, MA 02110-1301, USA.
#
# In addition, as a special exception, the copyright holders give
# permission to link the code of portions of this program with the OpenSSL
# library.
# You must obey the GNU General Public License in all respects for all of
# the code used other than OpenSSL. If you modify file(s) with this
# exception, you may extend this exception to your version of the file(s),
# but you are not obligated to do so. If you do not wish to do so, delete
# this exception statement from your version. If you delete this exception
# statement from all source files in the program, then also delete it here.
#
import os
import logging
from twisted.internet import reactor
import twisted.internet.error
import deluge.component as component
import deluge.configmanager
import deluge.common
from deluge.core.rpcserver import RPCServer, export
import deluge.error
log = logging.getLogger(__name__)
class Daemon(object):
def __init__(self, options=None, args=None, classic=False):
# Check for another running instance of the daemon
if os.path.isfile(deluge.configmanager.get_config_dir("deluged.pid")):
# Get the PID and the port of the supposedly running daemon
try:
(pid, port) = open(
deluge.configmanager.get_config_dir("deluged.pid")
).read().strip().split(";")
pid = int(pid)
port = int(port)
except ValueError:
pid = None
port = None
def process_running(pid):
if deluge.common.windows_check():
import win32process
return pid in win32process.EnumProcesses()
else:
# We can just use os.kill on UNIX to test if the process is running
try:
os.kill(pid, 0)
except OSError:
return False
else:
return True
if pid is not None and process_running(pid):
# Ok, so a process is running with this PID, let's make doubly-sure
# it's a deluged process by trying to open a socket to it's port.
import socket
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
try:
s.connect(("127.0.0.1", port))
except socket.error:
# Can't connect, so it must not be a deluged process..
pass
else:
# This is a deluged!
s.close()
raise deluge.error.DaemonRunningError(
"There is a deluge daemon running with this config "
"directory!"
)
# Twisted catches signals to terminate, so just have it call the shutdown
# method.
reactor.addSystemEventTrigger("before", "shutdown", self._shutdown)
# Catch some Windows specific signals
if deluge.common.windows_check():
from win32api import SetConsoleCtrlHandler
from win32con import CTRL_CLOSE_EVENT
from win32con import CTRL_SHUTDOWN_EVENT
def win_handler(ctrl_type):
log.debug("ctrl_type: %s", ctrl_type)
if ctrl_type == CTRL_CLOSE_EVENT or ctrl_type == CTRL_SHUTDOWN_EVENT:
self._shutdown()
return 1
SetConsoleCtrlHandler(win_handler)
version = deluge.common.get_version()
log.info("Deluge daemon %s", version)
log.debug("options: %s", options)
log.debug("args: %s", args)
# Set the config directory
if options and options.config:
deluge.configmanager.set_config_dir(options.config)
if options and options.listen_interface:
listen_interface = options.listen_interface
else:
listen_interface = ""
from deluge.core.core import Core
# Start the core as a thread and join it until it's done
self.core = Core(listen_interface=listen_interface)
port = self.core.config["daemon_port"]
if options and options.port:
port = options.port
if options and options.ui_interface:
interface = options.ui_interface
else:
interface = ""
self.rpcserver = RPCServer(
port=port,
allow_remote=self.core.config["allow_remote"],
listen=not classic,
interface=interface
)
# Register the daemon and the core RPCs
self.rpcserver.register_object(self.core)
self.rpcserver.register_object(self)
# Make sure we start the PreferencesManager first
component.start("PreferencesManager")
if not classic:
# Write out a pid file all the time, we use this to see if a deluged is running
# We also include the running port number to do an additional test
open(deluge.configmanager.get_config_dir("deluged.pid"), "wb").write(
"%s;%s\n" % (os.getpid(), port))
component.start()
try:
reactor.run()
finally:
self._shutdown()
@export()
def shutdown(self, *args, **kwargs):
reactor.callLater(0, reactor.stop)
def _shutdown(self, *args, **kwargs):
if os.path.exists(deluge.configmanager.get_config_dir("deluged.pid")):
try:
os.remove(deluge.configmanager.get_config_dir("deluged.pid"))
except Exception, e:
log.exception(e)
log.error("Error removing deluged.pid!")
log.info("Waiting for components to shutdown..")
d = component.shutdown()
return d
@export()
def get_method_list(self):
"""
Returns a list of the exported methods.
"""
return self.rpcserver.get_method_list()
@export(1)
def authorized_call(self, rpc):
"""
Returns True if authorized to call rpc.
:param rpc: a rpc, eg, "core.get_torrents_status"
:type rpc: string
"""
if not rpc in self.get_method_list():
return False
auth_level = self.rpcserver.get_session_auth_level()
return auth_level >= self.rpcserver.get_rpc_auth_level()
|
Deluge
