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#! /usr/bin/python -E
#
# Copyright (C) 2007  Red Hat
# see file 'COPYING' for use and warranty information
#
# 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; version 2 only
#
# 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, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#

import os, sys

def daemonize():
    pid = os.fork()
    if pid != 0:
        os._exit(0)
    # become session leader
    os.setsid()
    
    # fork again to reparent to init
    pid = os.fork()
    if pid != 0:
        os._exit(0)

    os.chdir("/")
    os.umask(0)

    import resource
    maxfd = resource.getrlimit(resource.RLIMIT_NOFILE)[1]
    if (maxfd == resource.RLIM_INFINITY):
        maxfd = 1024
      
    # close all file descriptors
    for fd in range(0, maxfd):
        try:
            os.close(fd)
        except OSError:
            pass

    # stdin
    os.open("/dev/null", os.O_RDWR)
    # stdout
    os.open("/dev/null", os.O_RDWR)
    # stderr
    os.open("/dev/null", os.O_RDWR)

# To make development easier, we detect if we are in the development
# environment to load a different configuration and avoid becoming
# a daemon
devel = False
if os.path.exists(os.path.join(os.path.dirname(__file__), "Makefile")):
    devel = True

if not devel:
    sys.path.append("/usr/share/ipa/")

# this must be after sys.path is changed to work correctly
import pkg_resources
pkg_resources.require("TurboGears")
pkg_resources.require("ipa_gui")


from turbogears import update_config, start_server
import cherrypy
cherrypy.lowercase_api = True

# Load the config - look for a local file first for development
# and then the system config file
if devel:
    update_config(configfile="dev.cfg",
                  modulename="ipagui.config")
else:
    update_config(configfile="/usr/share/ipa/ipa-webgui.cfg",
                  modulename="ipagui.config.app")

from ipagui.controllers import Root

if not devel:
    try:
        daemonize()
    except Exception, e:
        sys.stderr.write("error becoming daemon: " + str(e))
        sys.exit(1)

start_server(Root())