# Do everything properly, and componentize from twisted.application import internet, service, strports from twisted.internet import protocol, reactor, defer, endpoints from twisted.words.protocols import irc from twisted.protocols import basic from twisted.python import components from twisted.web import resource, server, static, xmlrpc from twisted.spread import pb from zope.interface import Interface, implementer from OpenSSL import SSL import cgi class IFingerService(Interface): def getUser(user): """ Return a deferred returning L{bytes}. """ def getUsers(): """ Return a deferred returning a L{list} of L{bytes}. """ class IFingerSetterService(Interface): def setUser(user, status): """ Set the user's status to something. """ def catchError(err): return "Internal error in server" class FingerProtocol(basic.LineReceiver): def lineReceived(self, user): d = self.factory.getUser(user) d.addErrback(catchError) def writeValue(value): self.transport.write(value + b'\r\n') self.transport.loseConnection() d.addCallback(writeValue) class IFingerFactory(Interface): def getUser(user): """ Return a deferred returning a string. """ def buildProtocol(addr): """ Return a protocol returning a string. """ @implementer(IFingerFactory) class FingerFactoryFromService(protocol.ServerFactory): protocol = FingerProtocol def __init__(self, service): self.service = service def getUser(self, user): return self.service.getUser(user) components.registerAdapter(FingerFactoryFromService, IFingerService, IFingerFactory) class FingerSetterProtocol(basic.LineReceiver): def connectionMade(self): self.lines = [] def lineReceived(self, line): self.lines.append(line) def connectionLost(self, reason): if len(self.lines) == 2: self.factory.setUser(*self.lines) class IFingerSetterFactory(Interface): def setUser(user, status): """ Return a deferred returning L{bytes}. """ def buildProtocol(addr): """ Return a protocol returning L{bytes}. """ @implementer(IFingerSetterFactory) class FingerSetterFactoryFromService(protocol.ServerFactory): protocol = FingerSetterProtocol def __init__(self, service): self.service = service def setUser(self, user, status): self.service.setUser(user, status) components.registerAdapter(FingerSetterFactoryFromService, IFingerSetterService, IFingerSetterFactory) class IRCReplyBot(irc.IRCClient): def connectionMade(self): self.nickname = self.factory.nickname irc.IRCClient.connectionMade(self) def privmsg(self, user, channel, msg): user = user.split('!')[0] if self.nickname.lower() == channel.lower(): d = self.factory.getUser(msg.encode("ascii")) d.addErrback(catchError) d.addCallback(lambda m: "Status of %s: %s" % (msg, m)) d.addCallback(lambda m: self.msg(user, m)) class IIRCClientFactory(Interface): """ @ivar nickname """ def getUser(user): """ Return a deferred returning a string. """ def buildProtocol(addr): """ Return a protocol. """ @implementer(IIRCClientFactory) class IRCClientFactoryFromService(protocol.ClientFactory): protocol = IRCReplyBot nickname = None def __init__(self, service): self.service = service def getUser(self, user): return self.service.getUser(user) components.registerAdapter(IRCClientFactoryFromService, IFingerService, IIRCClientFactory) class UserStatusTree(resource.Resource): def __init__(self, service): resource.Resource.__init__(self) self.service=service # add a specific child for the path "RPC2" self.putChild("RPC2", UserStatusXR(self.service)) # need to do this for resources at the root of the site self.putChild("", self) def _cb_render_GET(self, users, request): userOutput = ''.join(["
  • %s
  • " % (user, user) for user in users]) request.write(""" Users

    Users

    """ % userOutput) request.finish() def render_GET(self, request): d = self.service.getUsers() d.addCallback(self._cb_render_GET, request) # signal that the rendering is not complete return server.NOT_DONE_YET def getChild(self, path, request): return UserStatus(user=path, service=self.service) components.registerAdapter(UserStatusTree, IFingerService, resource.IResource) class UserStatus(resource.Resource): def __init__(self, user, service): resource.Resource.__init__(self) self.user = user self.service = service def _cb_render_GET(self, status, request): request.write("""%s

    %s

    %s

    """ % (self.user, self.user, status)) request.finish() def render_GET(self, request): d = self.service.getUser(self.user) d.addCallback(self._cb_render_GET, request) # signal that the rendering is not complete return server.NOT_DONE_YET class UserStatusXR(xmlrpc.XMLRPC): def __init__(self, service): xmlrpc.XMLRPC.__init__(self) self.service = service def xmlrpc_getUser(self, user): return self.service.getUser(user) def xmlrpc_getUsers(self): return self.service.getUsers() class IPerspectiveFinger(Interface): def remote_getUser(username): """ Return a user's status. """ def remote_getUsers(): """ Return a user's status. """ @implementer(IPerspectiveFinger) class PerspectiveFingerFromService(pb.Root): def __init__(self, service): self.service = service def remote_getUser(self, username): return self.service.getUser(username) def remote_getUsers(self): return self.service.getUsers() components.registerAdapter(PerspectiveFingerFromService, IFingerService, IPerspectiveFinger) @implementer(IFingerService) class FingerService(service.Service): def __init__(self, filename): self.filename = filename self.users = {} def _read(self): self.users.clear() with open(self.filename, "rb") as f: for line in f: user, status = line.split(b':', 1) user = user.strip() status = status.strip() self.users[user] = status self.call = reactor.callLater(30, self._read) def getUser(self, user): return defer.succeed(self.users.get(user, b"No such user")) def getUsers(self): return defer.succeed(list(self.users.keys())) def startService(self): self._read() service.Service.startService(self) def stopService(self): service.Service.stopService(self) self.call.cancel() application = service.Application('finger', uid=1, gid=1) f = FingerService('/etc/users') serviceCollection = service.IServiceCollection(application) f.setServiceParent(serviceCollection) strports.service("tcp:79", IFingerFactory(f) ).setServiceParent(serviceCollection) site = server.Site(resource.IResource(f)) strports.service("tcp:8000", site, ).setServiceParent(serviceCollection) strports.service("ssl:port=443:certKey=cert.pem:privateKey=key.pem", site ).setServiceParent(serviceCollection) i = IIRCClientFactory(f) i.nickname = 'fingerbot' internet.ClientService( endpoints.clientFromString(reactor, "tcp:irc.freenode.org:6667"), i).setServiceParent(serviceCollection) strports.service("tcp:8889", pb.PBServerFactory(IPerspectiveFinger(f)) ).setServiceParent(serviceCollection)