mirror of
https://github.com/GNS3/gns3-server
synced 2024-11-15 12:59:06 +00:00
675 lines
21 KiB
Python
675 lines
21 KiB
Python
#!/usr/bin/env python3
|
|
# -*- coding: utf-8 -*-
|
|
#
|
|
# Copyright (C) 2013, 2014 James E. Carpenter
|
|
#
|
|
# 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/>.
|
|
#
|
|
|
|
import socket
|
|
import sys
|
|
import os
|
|
import select
|
|
try:
|
|
import fcntl
|
|
import termios
|
|
import tty
|
|
except ImportError:
|
|
# On windows it's not available but this module can be included by the test suite
|
|
pass
|
|
import struct
|
|
import time
|
|
import argparse
|
|
import traceback
|
|
|
|
|
|
import logging
|
|
log = logging.getLogger(__name__)
|
|
|
|
|
|
# Escape characters
|
|
ESC_CHAR = '^^' # can be overriden from command line
|
|
ESC_QUIT = 'q'
|
|
|
|
# IOU seems to only send *1* byte at a time. If
|
|
# they ever fix that we'll be ready for it.
|
|
BUFFER_SIZE = 1024
|
|
|
|
# How long to wait before retrying a connection (seconds)
|
|
RETRY_DELAY = 3
|
|
|
|
# How often to test an idle connection (seconds)
|
|
POLL_TIMEOUT = 3
|
|
|
|
|
|
EXIT_SUCCESS = 0
|
|
EXIT_FAILURE = 1
|
|
EXIT_ABORT = 2
|
|
|
|
# Mostly from:
|
|
# https://code.google.com/p/miniboa/source/browse/trunk/miniboa/telnet.py
|
|
# --[ Telnet Commands ]---------------------------------------------------------
|
|
SE = 240 # End of sub-negotiation parameters
|
|
NOP = 241 # No operation
|
|
DATMK = 242 # Data stream portion of a sync.
|
|
BREAK = 243 # NVT Character BRK
|
|
IP = 244 # Interrupt Process
|
|
AO = 245 # Abort Output
|
|
AYT = 246 # Are you there
|
|
EC = 247 # Erase Character
|
|
EL = 248 # Erase Line
|
|
GA = 249 # The Go Ahead Signal
|
|
SB = 250 # Sub-option to follow
|
|
WILL = 251 # Will; request or confirm option begin
|
|
WONT = 252 # Wont; deny option request
|
|
DO = 253 # Do = Request or confirm remote option
|
|
DONT = 254 # Don't = Demand or confirm option halt
|
|
IAC = 255 # Interpret as Command
|
|
SEND = 1 # Sub-process negotiation SEND command
|
|
IS = 0 # Sub-process negotiation IS command
|
|
# --[ Telnet Options ]----------------------------------------------------------
|
|
BINARY = 0 # Transmit Binary
|
|
ECHO = 1 # Echo characters back to sender
|
|
RECON = 2 # Reconnection
|
|
SGA = 3 # Suppress Go-Ahead
|
|
TMARK = 6 # Timing Mark
|
|
TTYPE = 24 # Terminal Type
|
|
NAWS = 31 # Negotiate About Window Size
|
|
LINEMO = 34 # Line Mode
|
|
|
|
|
|
class FileLock:
|
|
|
|
# struct flock { /* from fcntl(2) */
|
|
# ...
|
|
# short l_type; /* Type of lock: F_RDLCK,
|
|
# F_WRLCK, F_UNLCK */
|
|
# short l_whence; /* How to interpret l_start:
|
|
# SEEK_SET, SEEK_CUR, SEEK_END */
|
|
# off_t l_start; /* Starting offset for lock */
|
|
# off_t l_len; /* Number of bytes to lock */
|
|
# pid_t l_pid; /* PID of process blocking our lock
|
|
# (F_GETLK only) */
|
|
# ...
|
|
# };
|
|
_flock = struct.Struct('hhqql')
|
|
|
|
def __init__(self, fname=None):
|
|
self.fd = None
|
|
self.fname = fname
|
|
|
|
def get_lock(self):
|
|
flk = self._flock.pack(fcntl.F_WRLCK, os.SEEK_SET,
|
|
0, 0, os.getpid())
|
|
flk = self._flock.unpack(
|
|
fcntl.fcntl(self.fd, fcntl.F_GETLK, flk))
|
|
|
|
# If it's not locked (or is locked by us) then return None,
|
|
# otherwise return the PID of the owner.
|
|
if flk[0] == fcntl.F_UNLCK:
|
|
return None
|
|
return flk[4]
|
|
|
|
def lock(self):
|
|
try:
|
|
self.fd = open('{}.lck'.format(self.fname), 'a')
|
|
except Exception as e:
|
|
raise LockError("Couldn't get lock on {}: {}"
|
|
.format(self.fname, e))
|
|
|
|
flk = self._flock.pack(fcntl.F_WRLCK, os.SEEK_SET, 0, 0, 0)
|
|
try:
|
|
fcntl.fcntl(self.fd, fcntl.F_SETLK, flk)
|
|
except BlockingIOError:
|
|
raise LockError("Already connected. PID {} has lock on {}"
|
|
.format(self.get_lock(), self.fname))
|
|
|
|
# If we got here then we must have the lock. Store the PID.
|
|
self.fd.truncate(0)
|
|
self.fd.write('{}\n'.format(os.getpid()))
|
|
self.fd.flush()
|
|
|
|
def unlock(self):
|
|
if self.fd:
|
|
# Deleting first prevents a race condition
|
|
try:
|
|
os.unlink(self.fd.name)
|
|
except FileNotFoundError as e:
|
|
log.debug("{}".format(e))
|
|
self.fd.close()
|
|
|
|
def __enter__(self):
|
|
self.lock()
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
self.unlock()
|
|
return False
|
|
|
|
|
|
class Console:
|
|
|
|
def fileno(self):
|
|
raise NotImplementedError("Only routers have fileno()")
|
|
|
|
|
|
class TTY(Console):
|
|
|
|
def read(self, fileno, bufsize):
|
|
return self.fd.read(bufsize)
|
|
|
|
def write(self, buf):
|
|
return self.fd.write(buf)
|
|
|
|
def register(self, epoll):
|
|
self.epoll = epoll
|
|
epoll.register(self.fd, select.EPOLLIN | select.EPOLLET)
|
|
|
|
def unregister(self, epoll):
|
|
epoll.unregister(self.fd)
|
|
|
|
def __enter__(self):
|
|
try:
|
|
self.fd = open('/dev/tty', 'r+b', buffering=0)
|
|
except OSError as e:
|
|
raise TTYError("Couldn't open controlling TTY: {}".format(e))
|
|
|
|
# Save original flags
|
|
self.termios = termios.tcgetattr(self.fd)
|
|
self.fcntl = fcntl.fcntl(self.fd, fcntl.F_GETFL)
|
|
|
|
# Update flags
|
|
tty.setraw(self.fd, termios.TCSANOW)
|
|
fcntl.fcntl(self.fd, fcntl.F_SETFL, self.fcntl | os.O_NONBLOCK)
|
|
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
|
|
# Restore flags to original settings
|
|
termios.tcsetattr(self.fd, termios.TCSANOW, self.termios)
|
|
fcntl.fcntl(self.fd, fcntl.F_SETFL, self.fcntl)
|
|
|
|
self.fd.close()
|
|
|
|
return False
|
|
|
|
|
|
class TelnetServer(Console):
|
|
|
|
def __init__(self, addr, port, stop_event):
|
|
self.addr = addr
|
|
self.port = port
|
|
self.fd_dict = {}
|
|
self.stop_event = stop_event
|
|
|
|
def read(self, fileno, bufsize):
|
|
# Someone wants to connect?
|
|
if fileno == self.sock_fd.fileno():
|
|
self._accept()
|
|
return None
|
|
|
|
self._cur_fileno = fileno
|
|
|
|
# Read a maximum of _bufsize_ bytes without blocking. When it
|
|
# would want to block it means there's no more data. An empty
|
|
# buffer normally means that we've been disconnected.
|
|
try:
|
|
buf = self._read_cur(bufsize, socket.MSG_DONTWAIT)
|
|
except BlockingIOError:
|
|
return None
|
|
except ConnectionResetError:
|
|
buf = b''
|
|
if not buf:
|
|
self._disconnect(fileno)
|
|
|
|
# Process and remove any telnet commands from the buffer
|
|
if IAC in buf:
|
|
buf = self._IAC_parser(buf)
|
|
|
|
return buf
|
|
|
|
def write(self, buf):
|
|
for fd in self.fd_dict.values():
|
|
fd.send(buf)
|
|
|
|
def register(self, epoll):
|
|
self.epoll = epoll
|
|
epoll.register(self.sock_fd, select.EPOLLIN)
|
|
|
|
def unregister(self, epoll):
|
|
epoll.unregister(self.sock_fd)
|
|
|
|
def _read_block(self, bufsize):
|
|
buf = self._read_cur(bufsize, socket.MSG_WAITALL)
|
|
# If we don't get everything we were looking for then the
|
|
# client probably disconnected.
|
|
if len(buf) < bufsize:
|
|
self._disconnect(self._cur_fileno)
|
|
return buf
|
|
|
|
def _read_cur(self, bufsize, flags):
|
|
return self.fd_dict[self._cur_fileno].recv(bufsize, flags)
|
|
|
|
def _write_cur(self, buf):
|
|
return self.fd_dict[self._cur_fileno].send(buf)
|
|
|
|
def _IAC_parser(self, buf):
|
|
skip_to = 0
|
|
while not self.stop_event.is_set():
|
|
# Locate an IAC to process
|
|
iac_loc = buf.find(IAC, skip_to)
|
|
if iac_loc < 0:
|
|
break
|
|
|
|
# Get the TELNET command
|
|
iac_cmd = bytearray([IAC])
|
|
try:
|
|
iac_cmd.append(buf[iac_loc + 1])
|
|
except IndexError:
|
|
buf.extend(self._read_block(1))
|
|
iac_cmd.append(buf[iac_loc + 1])
|
|
|
|
# Is this just a 2-byte TELNET command?
|
|
if iac_cmd[1] not in [WILL, WONT, DO, DONT]:
|
|
if iac_cmd[1] == AYT:
|
|
log.debug("Telnet server received Are-You-There (AYT)")
|
|
self._write_cur(
|
|
b'\r\nYour Are-You-There received. I am here.\r\n'
|
|
)
|
|
elif iac_cmd[1] == IAC:
|
|
# It's data, not an IAC
|
|
iac_cmd.pop()
|
|
# This prevents the 0xff from being
|
|
# interputed as yet another IAC
|
|
skip_to = iac_loc + 1
|
|
log.debug("Received IAC IAC")
|
|
elif iac_cmd[1] == NOP:
|
|
pass
|
|
else:
|
|
log.debug("Unhandled telnet command: "
|
|
"{0:#x} {1:#x}".format(*iac_cmd))
|
|
|
|
# This must be a 3-byte TELNET command
|
|
else:
|
|
try:
|
|
iac_cmd.append(buf[iac_loc + 2])
|
|
except IndexError:
|
|
buf.extend(self._read_block(1))
|
|
iac_cmd.append(buf[iac_loc + 2])
|
|
# We do ECHO, SGA, and BINARY. Period.
|
|
if iac_cmd[1] == DO:
|
|
if iac_cmd[2] not in [ECHO, SGA, BINARY]:
|
|
self._write_cur(bytes([IAC, WONT, iac_cmd[2]]))
|
|
log.debug("Telnet WON'T {:#x}".format(iac_cmd[2]))
|
|
elif iac_cmd[1] == WILL and iac_cmd[2] == BINARY:
|
|
pass # It's standard negociation we can ignore it
|
|
else:
|
|
log.debug("Unhandled telnet command: "
|
|
"{0:#x} {1:#x} {2:#x}".format(*iac_cmd))
|
|
|
|
# Remove the entire TELNET command from the buffer
|
|
buf = buf.replace(iac_cmd, b'', 1)
|
|
|
|
# Return the new copy of the buffer, minus telnet commands
|
|
return buf
|
|
|
|
def _accept(self):
|
|
fd, addr = self.sock_fd.accept()
|
|
self.fd_dict[fd.fileno()] = fd
|
|
self.epoll.register(fd, select.EPOLLIN | select.EPOLLET)
|
|
|
|
log.info("Telnet connection from {}:{}".format(addr[0], addr[1]))
|
|
|
|
# This is a one-way negotiation. This is very basic so there
|
|
# shouldn't be any problems with any decent client.
|
|
fd.send(bytes([IAC, WILL, ECHO,
|
|
IAC, WILL, SGA,
|
|
IAC, WILL, BINARY,
|
|
IAC, DO, BINARY]))
|
|
|
|
if args.telnet_limit and len(self.fd_dict) > args.telnet_limit:
|
|
fd.send(b'\r\nToo many connections\r\n')
|
|
self._disconnect(fd.fileno())
|
|
log.warn("Client disconnected because of too many connections. "
|
|
"(limit currently {})".format(args.telnet_limit))
|
|
|
|
def _disconnect(self, fileno):
|
|
fd = self.fd_dict.pop(fileno)
|
|
log.info("Telnet client disconnected")
|
|
try:
|
|
fd.shutdown(socket.SHUT_RDWR)
|
|
except OSError as e:
|
|
log.warn("shutdown: {}".format(e))
|
|
fd.close()
|
|
|
|
def __enter__(self):
|
|
# Open a socket and start listening
|
|
|
|
info = socket.getaddrinfo(self.addr, self.port, 0, socket.AF_UNSPEC, socket.SOCK_STREAM, 0, socket.AI_PASSIVE)
|
|
if not info:
|
|
raise TelnetServerError("getaddrinfo returns an empty list on {}:{}".format(self.addr, self.port))
|
|
for res in info:
|
|
af, socktype, proto, _, sa = res
|
|
sock_fd = socket.socket(af, socktype, proto)
|
|
sock_fd.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
|
|
try:
|
|
sock_fd.bind(sa)
|
|
except OSError:
|
|
raise TelnetServerError("Cannot bind to {}:{}"
|
|
.format(self.addr, self.port))
|
|
|
|
sock_fd.listen(socket.SOMAXCONN)
|
|
self.sock_fd = sock_fd
|
|
log.info("Telnet server ready for connections on {}:{}".format(self.addr, self.port))
|
|
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
for fileno in list(self.fd_dict.keys()):
|
|
self._disconnect(fileno)
|
|
self.sock_fd.close()
|
|
return False
|
|
|
|
|
|
class IOU:
|
|
|
|
def __init__(self, ttyC, ttyS, stop_event):
|
|
self.ttyC = ttyC
|
|
self.ttyS = ttyS
|
|
self.stop_event = stop_event
|
|
|
|
def read(self, bufsize):
|
|
try:
|
|
buf = self.fd.recv(bufsize)
|
|
except BlockingIOError:
|
|
return None
|
|
return buf
|
|
|
|
def write(self, buf):
|
|
try:
|
|
self.fd.send(buf)
|
|
except BlockingIOError:
|
|
return
|
|
|
|
def _open(self):
|
|
self.fd = socket.socket(socket.AF_UNIX, socket.SOCK_DGRAM)
|
|
self.fd.setblocking(False)
|
|
|
|
def _bind(self):
|
|
try:
|
|
os.unlink(self.ttyC)
|
|
except FileNotFoundError:
|
|
pass
|
|
except Exception as e:
|
|
raise NetioError("Couldn't unlink socket {}: {}".format(self.ttyC, e))
|
|
|
|
try:
|
|
self.fd.bind(self.ttyC)
|
|
except Exception as e:
|
|
raise NetioError("Couldn't create socket {}: {}".format(self.ttyC, e))
|
|
|
|
def _connect(self):
|
|
# Keep trying until we connect or die trying
|
|
while not self.stop_event.is_set():
|
|
try:
|
|
self.fd.connect(self.ttyS)
|
|
except FileNotFoundError:
|
|
log.debug("Waiting to connect to {}".format(self.ttyS))
|
|
time.sleep(RETRY_DELAY)
|
|
except Exception as e:
|
|
raise NetioError("Couldn't connect to socket {}: {}".format(self.ttyS, e))
|
|
else:
|
|
break
|
|
|
|
def register(self, epoll):
|
|
self.epoll = epoll
|
|
epoll.register(self.fd, select.EPOLLIN | select.EPOLLET)
|
|
|
|
def unregister(self, epoll):
|
|
epoll.unregister(self.fd)
|
|
|
|
def fileno(self):
|
|
return self.fd.fileno()
|
|
|
|
def __enter__(self):
|
|
self._open()
|
|
self._bind()
|
|
self._connect()
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_val, exc_tb):
|
|
os.unlink(self.ttyC)
|
|
self.fd.close()
|
|
return False
|
|
|
|
|
|
class IOUConError(Exception):
|
|
pass
|
|
|
|
|
|
class LockError(IOUConError):
|
|
pass
|
|
|
|
|
|
class NetioError(IOUConError):
|
|
pass
|
|
|
|
|
|
class TTYError(IOUConError):
|
|
pass
|
|
|
|
|
|
class TelnetServerError(IOUConError):
|
|
pass
|
|
|
|
|
|
class ConfigError(IOUConError):
|
|
pass
|
|
|
|
|
|
def mkdir_netio(netio_dir):
|
|
try:
|
|
os.mkdir(netio_dir)
|
|
except FileExistsError:
|
|
pass
|
|
except Exception as e:
|
|
raise NetioError("Couldn't create directory {}: {}".format(netio_dir, e))
|
|
|
|
|
|
def send_recv_loop(epoll, console, router, esc_char, stop_event):
|
|
router.register(epoll)
|
|
console.register(epoll)
|
|
|
|
try:
|
|
router_fileno = router.fileno()
|
|
esc_quit = bytes(ESC_QUIT.upper(), 'ascii')
|
|
esc_state = False
|
|
|
|
while not stop_event.is_set():
|
|
event_list = epoll.poll(timeout=POLL_TIMEOUT)
|
|
|
|
# When/if the poll times out we send an empty datagram. If IOU
|
|
# has gone away then this will toss a ConnectionRefusedError
|
|
# exception.
|
|
if not event_list:
|
|
router.write(b'')
|
|
continue
|
|
|
|
for fileno, event in event_list:
|
|
buf = bytearray()
|
|
|
|
# IOU --> tty(s)
|
|
if fileno == router_fileno:
|
|
while not stop_event.is_set():
|
|
data = router.read(BUFFER_SIZE)
|
|
if not data:
|
|
break
|
|
buf.extend(data)
|
|
console.write(buf)
|
|
|
|
# tty --> IOU
|
|
else:
|
|
while not stop_event.is_set():
|
|
data = console.read(fileno, BUFFER_SIZE)
|
|
if not data:
|
|
break
|
|
buf.extend(data)
|
|
|
|
# If we just received the escape character then
|
|
# enter the escape state.
|
|
#
|
|
# If we are in the escape state then check for a
|
|
# quit command. Or if it's the escape character then
|
|
# send the escape character. Else, send the escape
|
|
# character we ate earlier and whatever character we
|
|
# just got. Exit escape state.
|
|
#
|
|
# If we're not in the escape state and this isn't an
|
|
# escape character then just send it to IOU.
|
|
if esc_state:
|
|
if buf.upper() == esc_quit:
|
|
sys.exit(EXIT_SUCCESS)
|
|
elif buf == esc_char:
|
|
router.write(esc_char)
|
|
else:
|
|
router.write(esc_char)
|
|
router.write(buf)
|
|
esc_state = False
|
|
elif buf == esc_char:
|
|
esc_state = True
|
|
else:
|
|
router.write(buf)
|
|
finally:
|
|
router.unregister(epoll)
|
|
console.unregister(epoll)
|
|
|
|
|
|
def get_args():
|
|
parser = argparse.ArgumentParser(
|
|
description='Connect to an IOU console port.')
|
|
parser.add_argument('-d', '--debug', action='store_true',
|
|
help='display some debugging information')
|
|
parser.add_argument('-e', '--escape',
|
|
help='set escape character (default: %(default)s)',
|
|
default=ESC_CHAR, metavar='CHAR')
|
|
parser.add_argument('-t', '--telnet-server',
|
|
help='start telnet server listening on ADDR:PORT',
|
|
metavar='ADDR:PORT', default=False)
|
|
parser.add_argument('-l', '--telnet-limit',
|
|
help='maximum number of simultaneous '
|
|
'telnet connections (default: %(default)s)',
|
|
metavar='LIMIT', type=int, default=1)
|
|
parser.add_argument('appl_id', help='IOU instance identifier')
|
|
return parser.parse_args()
|
|
|
|
|
|
def get_escape_character(escape):
|
|
|
|
# Figure out the escape character to use.
|
|
# Can be any ASCII character or a spelled out control
|
|
# character, like "^e". The string "none" disables it.
|
|
if escape.lower() == 'none':
|
|
esc_char = b''
|
|
elif len(escape) == 2 and escape[0] == '^':
|
|
c = ord(escape[1].upper()) - 0x40
|
|
if not 0 <= c <= 0x1f: # control code range
|
|
raise ConfigError("Invalid control code")
|
|
esc_char = bytes([c])
|
|
elif len(escape) == 1:
|
|
try:
|
|
esc_char = bytes(escape, 'ascii')
|
|
except ValueError as e:
|
|
raise ConfigError("Invalid escape character") from e
|
|
else:
|
|
raise ConfigError("Invalid length for escape character")
|
|
|
|
return esc_char
|
|
|
|
|
|
def start_ioucon(cmdline_args, stop_event):
|
|
|
|
global args
|
|
args = cmdline_args
|
|
|
|
if args.debug:
|
|
logging.basicConfig(level=logging.DEBUG)
|
|
else:
|
|
# default logging level
|
|
logging.basicConfig(level=logging.INFO)
|
|
|
|
# Create paths for the Unix domain sockets
|
|
netio = '/tmp/netio{}'.format(os.getuid())
|
|
ttyC = '{}/ttyC{}'.format(netio, args.appl_id)
|
|
ttyS = '{}/ttyS{}'.format(netio, args.appl_id)
|
|
|
|
try:
|
|
mkdir_netio(netio)
|
|
with FileLock(ttyC):
|
|
esc_char = get_escape_character(args.escape)
|
|
|
|
if args.telnet_server:
|
|
addr, _, port = args.telnet_server.partition(':')
|
|
nport = 0
|
|
try:
|
|
nport = int(port)
|
|
except ValueError:
|
|
pass
|
|
if addr == '' or nport == 0:
|
|
raise ConfigError('format for --telnet-server must be '
|
|
'ADDR:PORT (like 127.0.0.1:20000)')
|
|
|
|
while not stop_event.is_set():
|
|
epoll = select.epoll()
|
|
try:
|
|
if args.telnet_server:
|
|
with TelnetServer(addr, nport, stop_event) as console:
|
|
# We loop inside the Telnet server otherwise the client is disconnected when user use the reload command inside a terminal
|
|
while not stop_event.is_set():
|
|
try:
|
|
with IOU(ttyC, ttyS, stop_event) as router:
|
|
send_recv_loop(epoll, console, router, b'', stop_event)
|
|
except ConnectionRefusedError:
|
|
pass
|
|
else:
|
|
with IOU(ttyC, ttyS, stop_event) as router, TTY() as console:
|
|
send_recv_loop(epoll, console, router, esc_char, stop_event)
|
|
except ConnectionRefusedError:
|
|
pass
|
|
except KeyboardInterrupt:
|
|
sys.exit(EXIT_ABORT)
|
|
finally:
|
|
# Put us at the beginning of a line
|
|
if not args.telnet_server:
|
|
print()
|
|
|
|
except IOUConError as e:
|
|
if args.debug:
|
|
traceback.print_exc(file=sys.stderr)
|
|
else:
|
|
log.error("ioucon: {}".format(e))
|
|
sys.exit(EXIT_FAILURE)
|
|
|
|
log.info("exiting...")
|
|
|
|
|
|
def main():
|
|
|
|
import threading
|
|
stop_event = threading.Event()
|
|
args = get_args()
|
|
start_ioucon(args, stop_event)
|
|
|
|
if __name__ == '__main__':
|
|
main()
|