#!/bin/env python
import os
import sys
import logging as log
import getopt
import atexit
import time
from CanPktHandlerBase import CanPktHandlerBase
from CanPktHandler1 import CanPktHandler1
from NodeIfBase import NodeIfBase
from NodeIfCanStim import NodeIfCanStim
from NodeIfSerial import NodeIfSerial
from DaemonConfig import DaemonConfig
daemonApp = None
class CanDaemon():
nodeIf = None
ifNotifier = None
terminated = False
command_list = []
def __init__ (self):
pass
class IfNotifier():
""" Used by if threads to send messages to the main program thread """
UNDEFINED = 0
TERMINATE = 1
def notify(self, msg):
if msg == self.TERMINATE:
print 'Main terminate notify'
self.terminated = True
else:
print 'UNDEFINED NOTIFY'
def __rightAdjust(self, refstr, str):
spcstr = ''
endpos = 20-len(refstr)
for i in range(1,endpos):
if i == endpos-5:
spcstr += ':'
else:
spcstr += ' '
return (spcstr+str)
def helpCmd(self, *args):
quitStr = 'quit, exit'
# print quitStr, self.__rightAdjust(quitStr, 'shutdown pyCanDaemon')
# for cmd in cmdNames:
# print cmd, self.__rightAdjust(cmd, command_map[cmd][1])
def filterCmd(self, *args):
pass
def stateCmd(self, *args):
pass
def ifAddCmd(self, *args):
pass
def ifRemCmd(self, *args):
pass
def ifUpCmd(self, *args):
pass
def ifDownCmd(self, *args):
pass
def addBridgeCmd(self, *args):
pass
def remBridgeCmd(self, *args):
pass
def tcpdCmd(self, *args):
pass
def tlsdCmd(self, *args):
pass
def canCtldCmd(self, *args):
pass
def statusCmd(self, *args):
pass
def statsCmd(self, *args):
pass
def nodesCmd(self, *args):
pass
def filterlistCmd(self, *args):
pass
def simCmd(self, *args):
pass
def logCmd(self, *args):
pass
def execCmd(self, *args):
pass
def exitHelper(self):
if self.nodeIf is not None and self.nodeIf.running():
self.nodeIf.stop()
def exceptHelper(self, type, value, tb):
import traceback
traceback.print_exception(type, value, tb)
print '\nException in main program, shutting down threads'
self.terminated = True
self.exitHelper()
# sys.exit(-1)
def run(self):
try:
demoPath = os.path.dirname(__file__)
os.chdir(demoPath)
except:
return
print 'INIT: Start logging'
log.basicConfig(level=log.DEBUG)
print 'INIT: Get config options from command line / config file'
cfg = DaemonConfig()
try:
opts, args = getopt.getopt(sys.argv[1:], "ho:v", ["help", "output="])
except getopt.GetoptError:
print 'Invalid usage'
usage()
sys.exit(2)
# output = None
# verbose = False
for o, a in opts:
if o == "-v":
pass
# verbose = True
if o in ("-h", "--help"):
usage()
sys.exit()
if o in ("-o", "--output"):
pass
# output = a
print 'INIT: Loading filters and spaces'
# cfg.filterCfg.importFilter('DefaultFilter')
# cfg.stateSpaceCfg.importSpace('DefaultStateSpace')
cfg.stateSpaceCfg.loadSpaces()
cfg.filterCfg.loadFilters()
cfg.setupFilterBindings()
cfg.setupFilterChain()
print 'INIT: Starting selected can interface'
''' nodeif thread launch '''
self.ifNotifier = self.IfNotifier()
pktHandler = CanPktHandler1(cfg)
ifConfig = NodeIfCanStim.DEFAULT_CONFIG
self.nodeIf = NodeIfCanStim(ifConfig, pktHandler, self.ifNotifier)
# ifConfig = NodeIfSerial.DEFAULT_CONFIG
atexit.register(self.exitHelper)
sys.excepthook = self.exceptHelper
# self.nodeIf = NodeIfSerial(pktHandler, ifConfig)
if not self.nodeIf.start():
print 'FATAL: Failed to initialize node interface.'
print 'This may indicate that the interface is unavailable, ' \
'or that you do not have permission to access it.'
sys.exit(-1)
print 'Initialize/gather info on connected can nodes and load associated state'
print 'Start selected TCP and UDP server(s)'
# server threads launch
print 'CanDaemon v1 ready'
print 'Enter command or type \"help\" for a list of commands'
global command_map
command_map = {'help' : (self.helpCmd, 'display help'),
'filter' : (self.filterCmd, 'filter commands: \"help filter\"'),
'state' : (self.stateCmd, 'state commands: \"help state\"'),
'addif' : (self.ifAddCmd, 'add interface: \"help addif\"'),
'remif' : (self.ifRemCmd, 'remove interface <name>'),
'ifup' : (self.ifUpCmd, 'bring up interface <name>'),
'ifdown' : (self.ifDownCmd, 'bring down interface <name>'),
# 'addbrigde' : (self.addBridgeCmd, 'add bridge: \"help addbridge\"'),
# 'rembridge' : (self.remBridgeCmd, 'remove bridge <name>'),
'tcpd' : (self.tcpdCmd, 'tcpd server control: \"help tcpd\"'),
# 'tlsd' : (self.tlsdCmd, 'tlsd server control: \"help tlsd\"'),
# 'canctld' : (self.canCtldCmd, 'canctld server control: \"help canctld\"'),
# 'status' : (self.statusCmd, 'show daemon status'),
# 'stats' : (self.statsCmd, 'show statistics'),
# 'nodelist' : (self.nodesCmd, 'list can nodes'),
# 'filterlist' : (self.filterlistCmd, 'list active filters'),
# 'sim' : (self.simCmd, 'simulator commands: \"help sim\"'),
# 'log' : (self.logCmd, 'log control: \"help log\"'),
# 'exec' : (self.execCmd, 'run command listing <filename>')}
while not self.terminated:
input = raw_input('> ').strip().lower()
cmd = input.split(' ')
if cmd[0] == 'quit' or cmd[0] == 'exit':
self.terminated = True
elif command_map.has_key(cmd[0]):
command_map[cmd[0]][0](cmd[1:])
else:
print 'Unknown command: ' + cmd[0]
""" -- suggested commands -- p n = priority to implement (1 is highest)
base: (p 1)
filter add <name>
filter rem <name>
state add <name>
state rem <name>
state reset <name>
node interfaces: (p 1)
addif <serial/sim/udp/telnet> <options> (help protocol gives options)
remif <name> - delete an interface
ifup <name> - bring up an interface
ifdown <name> - bring down an interface
bridging: (p 2)
addbridge <name> <ifname1> <ifname2> <ifname3> ... - create if bridge
rembridge <name>
servers:
tcpd start [port] - raw tcp (telnet, compat) server, all pkts (p 1)
tcpd stop
tlsd start [port] - tcp+tls server, all pkts (p 2)
tlsd stop
canctld start [port] - pyCanGUI server (tcp/tls) (p 2)
canctld stop
info commands: (p 3)
status - shows active settings, interfaces, servers
stats - shows some traffic statistics
nodes - shows active nodes
filters - shows active filters
state [name] - shows active states, opt specific state info\
log - log control (TBD)
simulator commands: (p 2)
simrecord <file> - record incoming packets
simplay <file> [timescale] - play recorded stream, opt accel time:
simadd <nodeid> (nodetype)
simrem <nodeid>
simsave <config>
simload <config>
"""
""" -- other features --
startup.cfg - script to run at startup (command listing)
ie: ifup 0
tlsd start
canguid start
config.cfg - last daemon config (param override)
default.cfg - default daemon config (only read if config.cfg does not exist)
"""
print 'Shutdown'
if self.nodeIf.running():
print 'Stopping If thread'
self.nodeIf.stop()
cfg.stateSpaceCfg.saveSpaces()
cfg.filterCfg.saveFilters()
print 'Waiting 0.1..'
time.sleep(0.1) # wait for threads
print 'Terminating'
sys.exit(0) # will except if there are threads remaining
#---------------------------------------------------------------------------
def main():
daemonApp = CanDaemon()
# install_thread_excepthook()
daemonApp.run()
#---------------------------------------------------------------------------
if __name__ == '__main__':
__name__ = 'Main'
main()