commit 8d2a1919f7755c5c084576a7ac1bdd37bb4c52be Author: Isis Lovecruft <isis@torproject.org> Date: Sun Aug 19 08:34:12 2012 +0000 Added basic ICMP classes for testing reachability --- ooni/plugins/echo.py | 127 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 127 insertions(+), 0 deletions(-) diff --git a/ooni/plugins/echo.py b/ooni/plugins/echo.py new file mode 100644 index 0000000..bc1b2a8 --- /dev/null +++ b/ooni/plugins/echo.py @@ -0,0 +1,127 @@ +#!/usr/bin/env python +# -*- encoding: utf-8 -*- +# +# +---------+ +# | echo.py | +# +---------+ +# A simply ICMP-8 ping test. +# +# :author: Isis Lovecruft +# :version: 0.1.0-pre-alpha +# :license: (c) 2012 Isis Lovecruft +# see attached LICENCE file +# + +import os +import sys + +from twisted.plugin import IPlugin +from twisted.python import usage +from zope.interface import implements + +from lib import txscapy +from utils import log +from plugoo.assets import Asset +from plugoo.interface import ITest +from protocols.scapyproto import ScapyTest + +class EchoOptions(usage.Options): + optParameters = [ + ['interface', 'i', None, 'Network interface to use'], + ['destination', 'd', None, 'File of hosts to ping'], + ['count', 'c', 5, 'Number of packets to send', int], + ['size', 's', 56, 'Number of bytes to send in ICMP data field', int], + ['ttl', 't', 25, 'Set the IP Time to Live', int], + ] + optFlags = [] + +class EchoAsset(Asset): + def __init__(self, file=None): + self = Asset.__init__(self, file) + + def parse_line(self, line): + if line.startswith('#'): + return + else: + return line.replace('\n', '') + +class EchoTest(ScapyTest): + implements(IPlugin, ITest) + + shortName = 'echo' + description = 'A simple ICMP-8 test to check if a host is reachable' + options = EchoOptions + requirements = None + blocking = False + + pcap_file = 'echo.pcap' + receive = True + + def initialize(self): + self.request = {} + self.response = {} + + if self.local_options: + + options = self.local_options + + if options['interface']: + self.interface = options['interface'] + + if options['count']: + ## there's a Counter() somewhere, use it + self.count = options['count'] + + if options['size']: + self.size = options['size'] + + if options['ttl']: + self.ttl = options['ttl'] + + def load_assets(self): + assets = {} + option = self.local_options + + if option and option['destination']: + + try: + from scapy.all import IP + except: + log.err() + + if os.path.isfile(option['destination']): + with open(option['destination']) as hosts: + for line in hosts.readlines(): + assets.update({'host': EchoAsset(line)}) + else: + while type(options['destination']) is str: + try: + IP(options['destination']) + except: + log.err() + break + assets.update({'host': options['destination']}) + else: + log.msg("Couldn't understand destination option...") + log.msg("Give one IPv4 address, or a file with one address per line.") + return assets + + def experiment(self, args): + if len(args) == 0: + log.err("Error: We're Echo, not Narcissus!") + log.err(" Provide a list of hosts to ping...") + d = sys.exit(1) + return d + + ## XXX v4 / v6 + from scapy.all import ICMP, IP, sr + ping = sr(IP(dst=args)/ICMP()) + if ping: + self.response.update(ping.show()) + else: + log.msg('No response received from %s' % args) + + def control(self, *args): + pass + +echo = EchoTest(None, None, None)