#!/usr/local/bin/python # # Copyright (c) 2003-2005 Maxim Sobolev. All rights reserved. # Copyright (c) 2006-2014 Sippy Software, Inc. All rights reserved. # # All rights reserved. # # Redistribution and use in source and binary forms, with or without modification, # are permitted provided that the following conditions are met: # # 1. Redistributions of source code must retain the above copyright notice, this # list of conditions and the following disclaimer. # # 2. Redistributions in binary form must reproduce the above copyright notice, # this list of conditions and the following disclaimer in the documentation and/or # other materials provided with the distribution. # # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. import os, sys, socket def daemonize(logfile = None): # Fork once if os.fork() != 0: os._exit(0) # Create new session os.setsid() if os.fork() != 0: os._exit(0) os.chdir('/') fd = os.open('/dev/null', os.O_RDWR) os.dup2(fd, sys.__stdin__.fileno()) if logfile != None: fake_stdout = open(logfile, 'a', 1) sys.stdout = fake_stdout sys.stderr = fake_stdout fd = fake_stdout.fileno() os.dup2(fd, sys.__stdout__.fileno()) os.dup2(fd, sys.__stderr__.fileno()) if logfile == None: os.close(fd) def local4remote(lookup_address, family = socket.AF_INET): skt = socket.socket(family, socket.SOCK_DGRAM) ai = socket.getaddrinfo(lookup_address, None, family) if family == socket.AF_INET: _address = (ai[0][4][0], 12345) else: _address = (ai[0][4][0], 12345, ai[0][4][2], ai[0][4][3]) skt.connect(_address) if family == socket.AF_INET: laddress = skt.getsockname()[0] else: laddress = '[%s]' % skt.getsockname()[0] return laddress