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# -*- coding: utf-8 -*-
# sender
# Copyright (C) 2016 LEAP
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
Bitmask Command Line interface: zmq sender.
"""
import argparse
import json
import sys
from colorama import init as color_init
from colorama import Fore
from twisted.internet import defer
from txzmq import ZmqEndpoint, ZmqEndpointType
from txzmq import ZmqFactory, ZmqREQConnection
from txzmq import ZmqRequestTimeoutError
from leap.bitmask.core import ENDPOINT
appname = 'bitmaskctl'
def _print_result(result):
print Fore.GREEN + '%s' % result + Fore.RESET
def default_dict_printer(result):
if not result:
return
for key, value in result.items():
if value is None:
value = str(value)
print(Fore.RESET + key.ljust(10) + Fore.GREEN + value + Fore.RESET)
class Command(object):
"""A generic command dispatcher.
Any command in the class attribute `commands` will be dispached and
represented with a generic printer."""
service = ''
usage = '''{name} <subcommand>'''.format(name=appname)
epilog = ("Use bitmaskctl <subcommand> --help' to learn more "
"about each command.")
commands = []
def __init__(self, cfg, print_json=False):
self.cfg = cfg
color_init()
zf = ZmqFactory()
e = ZmqEndpoint(ZmqEndpointType.connect, ENDPOINT)
self._conn = ZmqREQConnection(zf, e)
self.data = []
if self.service:
self.data = [self.service]
self.print_json = print_json
def execute(self, raw_args):
self.parser = argparse.ArgumentParser(usage=self.usage,
epilog=self.epilog)
self.parser.add_argument('command', help='Subcommand to run')
try:
args = self.parser.parse_args(raw_args[0:1])
except SystemExit:
return defer.succeed(None)
# if command is in the default list, send the bare command
# and use the default printer
if args.command in self.commands:
self.data += [args.command] + raw_args[1:]
return self._send(printer=default_dict_printer)
elif (args.command == 'execute' or
args.command.startswith('_') or
not hasattr(self, args.command)):
print 'Unrecognized command'
return self.help([])
try:
# use dispatch pattern to invoke method with same name
return getattr(self, args.command)(raw_args[1:])
except SystemExit:
return defer.succeed(None)
def help(self, raw_args):
self.parser.print_help()
return defer.succeed(None)
def _send(self, printer=_print_result, timeout=60, errb=None):
d = self._conn.sendMsg(*self.data, timeout=timeout)
d.addCallback(self._check_err, printer)
d.addErrback(self._timeout_handler, errb)
return d
def _error(self, msg):
print Fore.RED + "[!] %s" % msg + Fore.RESET
sys.exit(1)
def _check_err(self, stuff, printer):
obj = json.loads(stuff[0])
if self.print_json:
print(json.dumps(obj, indent=2))
elif not obj['error']:
return printer(obj['result'])
else:
print Fore.RED + 'ERROR:' + '%s' % obj['error'] + Fore.RESET
def _timeout_handler(self, failure, errb):
if failure.trap(ZmqRequestTimeoutError) == ZmqRequestTimeoutError:
if callable(errb):
errb()
else:
print (Fore.RED + "[ERROR] Timeout contacting the bitmask "
"daemon. Is it running?" + Fore.RESET)
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