/usr/share/pyshared/twisted/runner/inetd.py is in python-twisted-runner 11.1.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 | # Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
#
"""
Twisted inetd.
Maintainer: Andrew Bennetts
Future Plans: Bugfixes. Specifically for UDP and Sun-RPC, which don't work
correctly yet.
"""
import os
from twisted.internet import process, reactor, fdesc
from twisted.internet.protocol import Protocol, ServerFactory
from twisted.protocols import wire
# A dict of known 'internal' services (i.e. those that don't involve spawning
# another process.
internalProtocols = {
'echo': wire.Echo,
'chargen': wire.Chargen,
'discard': wire.Discard,
'daytime': wire.Daytime,
'time': wire.Time,
}
class InetdProtocol(Protocol):
"""Forks a child process on connectionMade, passing the socket as fd 0."""
def connectionMade(self):
sockFD = self.transport.fileno()
childFDs = {0: sockFD, 1: sockFD}
if self.factory.stderrFile:
childFDs[2] = self.factory.stderrFile.fileno()
# processes run by inetd expect blocking sockets
# FIXME: maybe this should be done in process.py? are other uses of
# Process possibly affected by this?
fdesc.setBlocking(sockFD)
if childFDs.has_key(2):
fdesc.setBlocking(childFDs[2])
service = self.factory.service
uid = service.user
gid = service.group
# don't tell Process to change our UID/GID if it's what we
# already are
if uid == os.getuid():
uid = None
if gid == os.getgid():
gid = None
process.Process(None, service.program, service.programArgs, os.environ,
None, None, uid, gid, childFDs)
reactor.removeReader(self.transport)
reactor.removeWriter(self.transport)
class InetdFactory(ServerFactory):
protocol = InetdProtocol
stderrFile = None
def __init__(self, service):
self.service = service
|