#!/usr/bin/python3
-import time, socket, os, stat, atexit, errno, struct
-from datetime import datetime
import RPi.GPIO as GPIO
-SO_PEERCRED = 17 # DO - NOT - TOUCH
-GPIO.setmode(GPIO.BOARD)
-
-# ******** definitions *********
-# logging function
-# TODO: loglevel, log like a real daemon
-def log (what):
- print (datetime.now(),what)
+import statemachine, actor, pins, tysock, waker
-# send to client for information but don't care if it arrives
-def waynesend (conn, what):
- try:
- conn.send(what)
- except:
- log("Couldn't send %s" % str(what))
+# initialize GPIO stuff
+GPIO.setmode(GPIO.BOARD)
-# for command not found: do nothing with the pins and send a "0" to the client
-def doNothing (conn):
- log ("doing nothing")
- waynesend(conn,b"0")
+# bring 'em all up
+the_actor = actor.Actor()
+the_machine = statemachine.StateMachine(the_actor)
+the_socket = tysock.TySocket(the_machine)
+the_pins = pins.PinsWatcher(the_machine)
+the_waker = waker.Waker(the_machine)
+
+# we do the socket accept thing in the main thread
+try:
+ the_socket.accept()
+except KeyboardInterrupt:
+ # this is what we waited for!
pass
-# delete a file, don't care if it did not exist in the first place
-def forcerm(name):
- try:
- os.unlink (name)
- except OSError as e:
- # only ignore error if it was "file didn't exist"
- if e.errno != errno.ENOENT:
- raise
-
-# commands: on a pin do a series of timed on/off switches
-class Pinoutput:
- # name is for logging and also used for mapping command names to instances of this class
- # actionsanddelays is a list of pairs: (bool to set on pin, delay in seconds to wait afterwards)
- def __init__ (self, name, pinnumber, actionsanddelays):
- self.name = name
- self.pin = pinnumber
- self.todo = actionsanddelays
- GPIO.setup(pinnumber, GPIO.OUT)
- log ("Pin %d set to be an output pin for %s." % (pinnumber,name))
- # actually send the signal to the pins
- def __call__ (self, conn):
- for (value,delay) in self.todo:
- GPIO.output(self.pin, value)
- log ("%s: Pin %d set to %s." % (self.name,self.pin,str(value)))
- time.sleep(delay)
- # notify success
- waynesend(conn,b"1")
-
-# ******** configuration *********
-
-tuergroupid = 1005
-socketname = "/run/tuer.sock"
-pinlist = [Pinoutput("open", 12, [(True, 0.3), (False, 5.0)]),
- Pinoutput("close", 16, [(True, 0.3), (False, 5.0)]),
- Pinoutput("buzz", 22, [(True, 2.0), (False, 0.1)])]
-
-
-# ******** main *********
-# at the end do a cleanup
-atexit.register(GPIO.cleanup);
-
-# convert list of pin objects to dictionary for command lookup
-pindict = {}
-for pin in pinlist:
- pindict[pin.name.encode()] = pin
-
-# create socket
-sock = socket.socket (socket.AF_UNIX, socket.SOCK_STREAM)
-# delete old socket file and don't bitch around if it's not there
-forcerm(socketname)
-# bind socket to file name
-sock.bind (socketname)
-# ensure we close and delete the socket when we quit (atexit.register is LIFO!)
-atexit.register(forcerm, socketname)
-atexit.register(sock.close)
-# allow only users in the tuergroup to write to the socket
-os.chown (socketname, 0, tuergroupid)
-os.chmod (socketname, stat.S_IRUSR | stat.S_IWUSR | stat.S_IRGRP | stat.S_IWGRP)
-# listen to the people, but not too many at once
-sock.listen(1)
-
-# main loop
-# FIXME: DoS by opening socket but not sending data, because this loop is single threaded; maybe settimeout helps a bit.
-while True:
- # accept connections
- conn, addr = sock.accept()
- # get peer information (TODO use it for logging)
- (pid, uid, gid) = (struct.unpack('3i', conn.getsockopt(socket.SOL_SOCKET, SO_PEERCRED, struct.calcsize('3i'))))
- # get some data from the client (enough to hold any valid command)
- data = conn.recv (32)
- # log the command
- log("received command: %s" % str(data))
- # lookup the command, if it's not in the dict, use the doNothing function instead
- # and execute the looked up command or doNothing with the connection, so it can respond to the client
- pindict.get(data,doNothing)(conn)
- # close connection cleanly
- conn.close()
+# bring 'em all down
+the_waker.stop()
+the_pins.stop()
+the_socket.stop()
+the_machine.stop()
+the_actor.stop()
+# shutdown GPIO stuff
+GPIO.cleanup()
projects / saartuer.git / blobdiff