def __t2(self):
""" Interface Server method, this runs in a new thread when the
daemon starts. See _run() method for more information.
"""
logging.debug("communication-thread started")
# Create socket and bind to address
whitelist = self.config.getlist("Daemon", "whitelisted-ips")
isocket = DaemonServerSocket(port=self.getComPort(),
ip_whitelist=whitelist,
externalBlock=self.config.getboolean("Daemon","local-only"),
allowAll=self.config.getboolean("Daemon", "allow-all"))
while self.isRunning(): # keep listening forever
try:
client_socket = isocket.accept()
logging.debug("incoming message from interface.")
# create an interface out of the socket
# LATER: authentication can go here, before they connect. (eg logging in)
interface = Interface(self.router, client_socket)
self.registry.registerInterface(interface) #gives the interface its ID
self.router.addInterface(interface)
# since there are abilities that this person can perform throw
# to new thread by way of the interface class
self.router.sendMsg(makeCommandMsg("proceed", self.ID, dest=interface.ID))
Thread(target=interface.receiver).start()
except timeout:pass #catches a timeout and allows for daemon status checking
except Exception as e: logging.exception(e)
isocket.close()
logging.debug("communication-thread is dead")
def main():
parser = setupParser()
args = parser.parse_args()
#handle the commands given
if len(sys.argv) == 1:
print("Usage:",__simple__,"\n\nType 'emp -h' for some help.")
return
#print(args)
if args.help: help()
elif args.i:
from interface.empcurse import interactiveMode
interactiveMode()
else:
try:
# we will be communicating with the daemon
commport = EmpDaemon().getComPort()
if commport is None: print("Error: Daemon isn't running!");return
daemon = DaemonClientSocket(port=commport)
daemon.connect()
msg = strToMessage(daemon.recv())
if msg is None or msg.getValue() != "proceed":
print("Error: Couldn't connect to the daemon.")
return
myID = msg.getDestination()
#what are we communicating
if args.list:
daemon.send(makeCommandMsg("alarms",myID))
alerters = checkMsg(daemon.recv())
daemon.send(makeCommandMsg("plugs",myID))
plugs = checkMsg(daemon.recv())
#print the list all pretty like:
print("Attached targets and their temp IDs:") #TODO: make option to make it nopretty?
print(" Plugs:")
for k in plugs.keys():
print(" %s" % plugs[k][1])
print(" Name: %s"%plugs[k][0])
print(" ID: %s"%k)
print("\n Alarms:")
for k in alerters.keys():
print(" %s" % alerters[k][1])
print(" Name: %s"%alerters[k][0])
print(" ID: %s"%k)
print()
elif args.all:
daemon.send(makeCommandMsg("help",myID, args=["all"]))
cmds = checkMsg(daemon.recv(), dict)
for target in cmds.keys():
if args.pretty: print("%s"%target)
if len(cmds[target].keys()) > 0:
if args.pretty:
print("Commands:")
fancyprint(cmds[target])
else: print(str(cmds[target]))
else: print("No Commands available!")
print()
else:
# now we can start parsing targets and figuring out what to do with them
if args.tcmds:
daemon.send(makeCommandMsg("help",myID, args=args.target))
cmds = checkMsg(daemon.recv(), dict)
if args.pretty:
print("%s Commands: "%args.target[0])
fancyprint(cmds)
else: print(str(cmds))
elif args.ask:
daemon.send(makeCommandMsg("help",myID, args=args.target))
cmds = checkMsg(daemon.recv(), dict)
cmdfound = False
for cmd in cmds.keys():
if args.ask[0] == cmd:
if args.pretty: print(" %s -%s"%(cmd,cmds[cmd]))
else: print("{'%s': '%s'}"%(cmd,cmds[cmd]))
cmdfound = True
break
if not cmdfound:
if args.pretty: print("The target does not have that command.")
else: print("ERROR: No command")
else:
if len(args.command) < 1:
print("Usage: ",__usage__)
daemon.send(makeCommandMsg("help", myID, args=args.target))
cmds = checkMsg(daemon.recv(), dict)
print("\n%s Commands: "%args.target[0])
fancyprint(cmds)
else:
daemon.send(makeCommandMsg(args.command[0], myID, dest=args.target[0], args=args.command[1:]))
if not args.nowait:
result = checkMsg(daemon.recv())
# since this is a general case interface, we don't really know
# how to interpret the result of an argument. But this can
# be utilized in a script or a higher level interface. if you
# want to call smtg through your program be sure you can
# handle JSON
if args.pretty: fancyprint(result)
# No-pretty is the default, but its an argument just to specify
# if the command line is placed in scripts.
else: print(result)
else: print("success")
# now lets close the port to indicate that we are finished.
daemon.close()
except:
if not args.nowait: raise
else: print("error") # scripts can check for this.
def main():
parser = OptionParser( usage=__usage__,
version="Version: empd "+__version__,
description=__description__ )
parser.add_option("--start",action="store_const", const=0, dest="state",
help="start the EMP daemon")
parser.add_option("--stop", action="store_const", const=1, dest="state",
help="stop a running EMP daemon, may take some time to \
close all plug-ins")
parser.add_option("--restart", action="store_const", const=2, dest="state",
help="restart a running EMP daemon")
parser.add_option("--status", action="store_const", const=1, dest="status",
help="show the status of the currently running EMP \
daemon")
parser.add_option("--startup", action="store_const", const=3, dest="state",
help="Use this in your start-up/boot scripts to auto-launch \
empd.")
### the special daemonizer token. see Daemon class for more info ###
parser.add_option("-d", nargs=0, dest="daemonize", help=SUPPRESS_HELP)
# if there are no command line args, then print usage
if len(sys.argv[1:]) == 0:
parser.print_usage()
print("Use '-h' for more help and a list of options.")
return
## parse the command line arguments ##
(options, args) = parser.parse_args()
if len(args) > 1:
print("Invalid argument structure. Use '-h' for help.\n")
return
try: ## find out what the user wants to do. ##
# user wants to run some functions on the daemon.
# First we have to construct it to talk to it,
# which of course takes some time.
if options.state != None:
#we want to mess with the daemon, so construct it
if len(args) == 1: daemon = EmpDaemon(configfile=args[0])
else: daemon = EmpDaemon()
# then call functions on it.
if options.state == 0:
daemon.start()
elif options.state == 1:
daemon.stop()
elif options.state == 2:
daemon.restart()
elif options.state == 3:
daemon.startup()
# all the user wants to do is ask how the daemon is doing
# so open up a port and ask it for some information.
elif options.status != None:
try:
daemon = EmpDaemon()
p = daemon.getComPort()
if p is not None:
socket = DaemonClientSocket(port=p)
socket.connect()
msg = strToMessage(socket.recv())
logging.debug("empd got back: %s"%msg)
if msg.getValue() == "proceed":# it connected
myId= msg.getDestination()
socket.send(makeCommandMsg("status", myId))
print(strToMessage(socket.recv()).getValue(),"\n")
socket.close()
else: print("ERROR: Daemon rejected connection attempt.")
else: print("ERROR: Daemon is not running.")
except Exception as e:
print("ERROR: couldn't communicate with daemon:", e)
# The process has been called via a background thread so
# it is ok to just run the daemon, we are one!!
# see smtg.daemon.daemon.Daemon for more information.
elif options.daemonize != None:
#we want to mess with the daemon, so construct it
if len(args) == 1: daemon = EmpDaemon(configfile=args[0])
else: daemon = EmpDaemon()
daemon._run()
except Exception as e:
print("ERROR:",e)
raise e
