path: root/anaconda

#!/usr/bin/python
#
# anaconda: The Red Hat Linux Installation program
#
# (in alphabetical order...)
#
# Brent Fox <bfox@redhat.com>
# Mike Fulbright <msf@redhat.com>
# Jakub Jelinek <jakub@redhat.com>
# Jeremy Katz <katzj@redhat.com>
# Erik Troan <ewt@rpath.com>
# Matt Wilson <msw@rpath.com>
#
# ... And many others
#
# Copyright 1999-2005 Red Hat, Inc.
#
# This software may be freely redistributed under the terms of the GNU
# library public license.
#
# You should have received a copy of the GNU Library Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
#

# This toplevel file is a little messy at the moment...

import sys, os

# keep up with process ID of miniwm if we start it

miniwm_pid = None

# Make sure messages sent through python's warnings module get logged.
def AnacondaShowWarning(message, category, filename, lineno, file=sys.stderr):
    log.warning("%s" % warnings.formatwarning(message, category, filename, lineno))

# start miniWM
def startMiniWM(root='/'):
    (rd, wr) = os.pipe()
    childpid = os.fork()
    if not childpid:
        if os.access("./mini-wm", os.X_OK):
            cmd = "./mini-wm"
        elif os.access(root + "/usr/bin/mini-wm", os.X_OK):
            cmd = root + "/usr/bin/mini-wm"
        else:
            return None
        
        os.dup2(wr, 1)
        os.close(wr)
	args = [cmd, '--display', ':1']
	os.execv(args[0], args)
	sys.exit (1)
    else:
        # We need to make sure that mini-wm is the first client to
        # connect to the X server (see bug #108777).  Wait for mini-wm
        # to write back an acknowledge token.
        os.read(rd, 1)

    return childpid

# startup vnc X server
def startVNCServer(vncpassword=None, root='/', vncconnecthost=None,
		   vncconnectport=None):
    
    def set_vnc_password(root, passwd, passwd_file):
	(pid, fd) = os.forkpty()

	if not pid:
	    os.execv(root + "/usr/bin/vncpasswd", [root + "/usr/bin/vncpasswd", passwd_file])
	    sys.exit(1)

	# read password prompt
	os.read(fd, 1000)

	# write password
	os.write(fd, passwd + "\n")

	# read challenge again, and newline
	os.read(fd, 1000)
	os.read(fd, 1000)

	# write password again
	os.write(fd, passwd + "\n")

	# read remaining output
	os.read(fd, 1000)

	# wait for status
	try:
	    (pid, status) = os.waitpid(pid, 0)
	except OSError, (errno, msg):
	    print __name__, "waitpid:", msg

	return status

    stdoutLog.info(_("Starting VNC..."))

    # figure out host info
    connxinfo = None
    srvname = None
    try:
	import network

	# try to load /tmp/netinfo and see if we can sniff out network info
	netinfo = network.Network()
	srvname = None
	if netinfo.hostname != "localhost.localdomain":
	    srvname = "%s" % (netinfo.hostname,)
	else:
	    for dev in netinfo.netdevices.keys():
		try:
                    ip = isys.getIPAddress(dev)
                    log.info("ip of %s is %s" %(dev, ip))
		except Exception, e:
                    log.error("Got an exception trying to get the ip addr "
                              "of %s: %s" %(dev, e))
		    continue
		if ip == '127.0.0.1' or ip is None:
		    continue
		srvname = ip
		break

	if srvname is not None:
	    connxinfo = "%s:1" % (srvname,)

    except:
	log.error("Unable to determine VNC server network info")
	
    # figure out product info
    if srvname is not None:
	desktopname = _("%s %s installation on host %s") % (product.productName, product.productVersion, srvname)
    else:
	desktopname = _("%s %s installation") % (product.productName, product.productVersion)

    vncpid = os.fork()

    if not vncpid:
	args = [ root + "/usr/bin/Xvnc", ":1", "-nevershared",
		 "-depth", "16", "-geometry", "800x600",
		 "IdleTimeout=0", "-auth", "/dev/null", "-once",
		 "DisconnectClients=false", "desktop=%s" % (desktopname,)]

	# set passwd if necessary
	if vncpassword is not None:
	    try:
		rc = set_vnc_password(root, vncpassword, "/tmp/vncpasswd_file")
	    except Exception, e:
		stdoutLog.error("Unknown exception setting vnc password.")
                log.error("Exception was: %s" %(e,))
		rc = 1

	    if rc:
		stdoutLog.warning(_("Unable to set vnc password - using no password!"))
		stdoutLog.warning(_("Make sure your password is at least 6 characters in length."))
	    else:
		args = args + ["-rfbauth", "/tmp/vncpasswd_file"]
	else:
	    # needed if no password specified
	    args = args + ["SecurityTypes=None",]
			     
	tmplogFile = "/tmp/vncserver.log"
	try:
	    err = os.open(tmplogFile, os.O_RDWR | os.O_CREAT)
	    if err < 0:
		sys.stderr.write("error opening %s\n", tmplogFile)
	    else:
		os.dup2(err, 2)
		os.close(err)
	except:
	    # oh well
	    pass

	os.execv(args[0], args)
	sys.exit (1)

    if vncpassword is None:
	stdoutLog.warning(_("\n\nWARNING!!! VNC server running with NO PASSWORD!\n"
                         "You can use the vncpassword=<password> boot option\n"
                         "if you would like to secure the server.\n\n"))
	
    stdoutLog.info(_("The VNC server is now running."))

    if vncconnecthost is not None:
	stdoutLog.info(_("Attempting to connect to vnc client on host %s...") % (vncconnecthost,))
	
	hostarg = vncconnecthost
	if vncconnectport is not None:
	    hostarg = hostarg + ":" + vncconnectport
	    
	argv = ["/usr/bin/vncconfig", "-display", ":1", "-connect", hostarg]
	ntries = 0
	while 1:
	    output=iutil.execWithCapture(argv[0], argv, catchfd=2)
	    outfields = string.split(string.strip(output), ' ')
	    if outfields[0] == "connecting" and outfields[-1] == "failed":
		ntries += 1
		if ntries > 50:
		    stdoutLog.error(_("Giving up attempting to connect after 50 tries!\n"))
		    if connxinfo is not None:
			stdoutLog.info(_("Please manually connect your vnc client to %s to begin the install.") % (connxinfo,))
		    else:	    
			stdoutLog.info(_("Please manually connect your vnc client to begin the install."))
		    break
		    
		stdoutLog.info(output)
		stdoutLog.info(_("Will try to connect again in 15 seconds..."))
		time.sleep(15)
		continue
	    else:
		stdoutLog.info(_("Connected!"))
		break
    else:
	if connxinfo is not None:
	    stdoutLog.info(_("Please connect to %s to begin the install...") % (connxinfo,))
	else:
	    stdoutLog.info(_("Please connect to begin the install..."))

    os.environ["DISPLAY"]=":1"
    doStartupX11Actions()

# function to handle X startup special issues for anaconda
def doStartupX11Actions():
    global miniwm_pid

    # now start up mini-wm
    try:
	miniwm_pid = startMiniWM()
	log.info("Started mini-wm")
    except:
	miniwm_pid = None
	log.error("Unable to start mini-wm")

    # test to setup dpi
    # cant do this if miniwm didnt run because otherwise when
    # we open and close an X connection in the xutils calls
    # the X server will exit since this is the first X
    # connection (if miniwm isnt running)
    if miniwm_pid is not None:
	import xutils

	try:
	    if xutils.screenWidth() > 640:
		dpi = "96"
	    else:
		dpi = "75"


	    xutils.setRootResource('Xcursor.size', '24')
	    xutils.setRootResource('Xcursor.theme', 'Bluecurve')
	    xutils.setRootResource('Xcursor.theme_core', 'true')

	    xutils.setRootResource('Xft.antialias', '1')
	    xutils.setRootResource('Xft.dpi', dpi)
	    xutils.setRootResource('Xft.hinting', '1')
	    xutils.setRootResource('Xft.hintstyle', 'hintslight')
	    xutils.setRootResource('Xft.rgba', 'none')
	except:
	    sys.stderr.write("X SERVER STARTED, THEN FAILED");
	    raise RuntimeError, "X server failed to start"

def doShutdownX11Actions():
    global miniwm_pid
    
    if miniwm_pid is not None:
	try:
	    os.kill(miniwm_pid, 15)
	    os.waitpid(miniwm_pid, 0)
	except:
	    pass

# handle updates of just a single file in a python package
def setupPythonUpdates():
    import glob

    # get the python version.  first of /usr/lib/python*, strip off the
    # first 15 chars
    pyvers = glob.glob("/usr/lib/python*")
    pyver = pyvers[0][15:]
    
    try:
        os.mkdir("/tmp/updates")
    except:
        pass

    for pypkg in ("rhpl", "yum", "rpmUtils", "urlgrabber", "repomd",
		  "pykickstart", "rhpxl"):
        # get the libdir.  *sigh*
        if os.access("/usr/lib64/python%s/site-packages/%s" %(pyver, pypkg),
                     os.X_OK):
            libdir = "lib64"
        else:
            libdir = "lib"
        
        if os.access("/mnt/source/RHupdates/%s" %(pypkg,), os.X_OK):
            try:
                os.mkdir("/tmp/updates/%s" %(pypkg,))
            except:
                pass

            # symlink the existing ones
            for f in os.listdir("/mnt/source/RHupdates/%s" %(pypkg,)):
                os.symlink("/mnt/source/RHupdates/%s/%s" %(pypkg, f),
                           "/tmp/updates/%s/%s" %(pypkg, f))

        if os.access("/tmp/updates/%s" %(pypkg,), os.X_OK):
            for f in os.listdir("/usr/%s/python%s/site-packages/%s" %(libdir,
                                                                      pyver,
                                                                      pypkg)):
                if os.access("/tmp/updates/%s/%s" %(pypkg, f), os.R_OK):
                    continue
                elif (f.endswith(".pyc") and
                      os.access("/tmp/updates/%s/%s" %(pypkg, f[:-1]),os.R_OK)):
                    # dont copy .pyc files we are replacing with updates
                    continue
                else:
                    os.symlink("/usr/%s/python%s/site-packages/%s/%s" %(libdir,
                                                                        pyver,
                                                                        pypkg,
                                                                        f),
                               "/tmp/updates/%s/%s" %(pypkg, f))
    
# For anaconda in test mode
if (os.path.exists('isys')):
    sys.path.append('isys')
    sys.path.append('textw')
    sys.path.append('iw')
else:
    sys.path.append('/usr/lib/anaconda')
    sys.path.append('/usr/lib/anaconda/textw')
    sys.path.append('/usr/lib/anaconda/iw')

if (os.path.exists('booty')):
    sys.path.append('booty')
    sys.path.append('booty/edd')
else:
    sys.path.append('/usr/lib/booty')

sys.path.append('/usr/share/system-config-keyboard')

try:
    import updates_disk_hook
except ImportError:
    pass

# pull this in to get product name and versioning
import product

# do this early to keep our import footprint as small as possible
# Python passed my path as argv[0]!
# if sys.argv[0][-7:] == "syslogd":
if len(sys.argv) > 1:
    if sys.argv[1] == "--syslogd":
        from syslogd import Syslogd
        root = sys.argv[2]
        output = sys.argv[3]
        syslog = Syslogd (root, open (output, "a"))
	# this never returns

# this handles setting up RHupdates for pypackages to minimize the set needed
setupPythonUpdates()

import signal, traceback, string, isys, iutil, time
from exception import handleException
import dispatch
import warnings
import logging
from anaconda_log import logger
from flags import flags
from rhpl.translate import _, textdomain, addPoPath

log = logging.getLogger("anaconda")
stdoutLog = logging.getLogger("anaconda.stdout")

if iutil.getArch() != "s390" and os.access("/dev/tty3", os.W_OK):
    logger.addFileHandler ("/dev/tty3", log)

warnings.showwarning = AnacondaShowWarning

if os.path.isdir("/mnt/source/RHupdates/po"):
    log.info("adding RHupdates/po")
    addPoPath("/mnt/source/RHupdates/po")
if os.path.isdir("/tmp/updates/po"):
    log.info("adding /tmp/updates/po")    
    addPoPath("/tmp/updates/po")
textdomain("anaconda")

# reset python's default SIGINT handler
signal.signal(signal.SIGINT, signal.SIG_DFL)

# Silly GNOME stuff
if os.environ.has_key('HOME') and not os.environ.has_key("XAUTHORITY"):
    os.environ['XAUTHORITY'] = os.environ['HOME'] + '/.Xauthority'
os.environ['HOME'] = '/tmp'
os.environ['LC_NUMERIC'] = 'C'
os.environ["GCONF_GLOBAL_LOCKS"] = "1"

# In theory, this gets rid of our LVM file descriptor warnings
os.environ["LVM_SUPPRESS_FD_WARNINGS"] = "1"

if os.environ.has_key ("ANACONDAARGS"):
    theargs = string.split (os.environ["ANACONDAARGS"])
else:
    theargs = sys.argv[1:]

# we can't let the LD_PRELOAD hang around because it will leak into
# rpm %post and the like.  ick :/
if os.environ.has_key("LD_PRELOAD"):
    del os.environ["LD_PRELOAD"]

# we need to do this really early so we make sure its done before rpm
# is imported
iutil.writeRpmPlatform()

try:
    (args, extra) = isys.getopt(theargs, 'CGTRxtdr:fm:', 
          [ 'graphical', 'text', 'test', 'debug', 'nofallback',
            'method=', 'rootpath=', 'pcic=', "overhead=",
	    'testpath=', 'mountfs', 'traceonly', 'kickstart=',
            'lang=', 'keymap=', 'kbdtype=', 'module=', 'class=',
	    'expert', 'serial', 'lowres', 'nofb', 'rescue', 'nomount',
            'autostep', 'resolution=', 'skipddc', 'noselinux', 'selinux',
	    'vnc', 'vncconnect=', 'vnc=', 'cmdline', 'headless', 'usefbx',
            'virtpconsole=', 'loglevel=', 'syslog='])
except TypeError, msg:
    sys.stderr.write("Error %s\n:" % msg)
    sys.exit(-1)

if extra:
    sys.stderr.write("Unexpected arguments: %s\n" % extra)
    sys.exit(-1)

# Save the arguments in case we need to reexec anaconda for kon
os.environ["ANACONDAARGS"] = string.join(sys.argv[1:])

# remove the arguments - gnome_init doesn't understand them
savedargs = sys.argv[1:]
sys.argv = sys.argv[:1]
sys.argc = 1

# Parameters for the main anaconda routine
#
rootPath = '/mnt/sysimage'	# where to instal packages
extraModules = []		# kernel modules to use
debug = 0			# start up pdb immediately
traceOnly = 0			# don't run, just list modules we use
nofallback = 0			# if GUI mode fails, exit
rescue = 0			# run in rescue mode
rescue_nomount = 0		# don't automatically mount device in rescue
runres = '800x600'		# resolution to run the GUI install in
runres_override = 0             # was run resolution overridden by user?
skipddc = 0			# if true skip ddcprobe (locks some machines)
instClass = None		# the install class to use
progmode = 'install' 		# 'rescue', or 'install'
method = None			# URL representation of install method
display_mode = None
graphical_failed = 0


# should we ever try to probe for X stuff?  this will give us a convenient
# out eventually to circumvent all probing and just fall back to text mode
# on hardware where we break things if we probe
isHeadless = 0

# should we use fbdev for X?
useFBX = False

# probing for hardware on an s390 seems silly...
if iutil.getArch() == "s390":
    isHeadless = 1

#
# xcfg       - xserver info (?)
# mousehw    - mouseinfo info
# videohw    - videocard info
# monitorhw  - monitor info
# lang       - language to use for install/machine default
# keymap     - kbd map
#
xcfg = None
monitorhw = None
videohw = None
mousehw = None
lang = None
method = None
keymap = None
kbdtype = None
progmode = None
customClass = None
kbd = None
ksfile = None
vncpassword = None
vncconnecthost = None
vncconnectport = None

#
# parse off command line arguments
#
for n in args:
    (str, arg) = n

    if (str == '--class'):
        customClass = arg
    elif (str == '-d' or str == '--debug'):
	debug = 1
    elif (str == '--expert'):
	flags.expert = 1 
    elif (str == '--graphical'):
	display_mode = 'g'
    elif (str == '--keymap'):
        keymap = arg
    elif (str == '--kickstart'):
	from kickstart import Kickstart
	ksfile = arg
        instClass = Kickstart(ksfile, flags.serial)
    elif (str == '--lang'):
        lang = arg
    elif (str == '--syslog'):
        if arg.find(":") != -1:
            (host, port) = arg.split(':')
            logger.addSysLogHandler(logging.getLogger("anaconda"), host,
                                    port=int(port))
        else:
            logger.addSysLogHandler(logging.getLogger("anaconda"), arg)
    elif (str == '--loglevel'):
        if arg == "debug":
            log.setLevel(logging.DEBUG)
        elif arg == "info":
            log.setLevel(logging.INFO)
        elif arg == "warning":
            log.setLevel(logging.WARNING)
        elif arg == "error":
            log.setLevel(logging.ERROR)
        elif arg == "critical":
            log.setLevel(logging.CRITICAL)
    elif (str == '--lowres'):
        runres = '640x480'
    elif (str == '-m' or str == '--method'):
	method = arg
	if method[0] == '@':
	    # ftp installs pass the password via a file in /tmp so
	    # ps doesn't show it
	    filename = method[1:]
	    method = open(filename, "r").readline()
	    method = method[:len(method) - 1]
	    os.unlink(filename)
    elif (str == '--module'):
	(path, name) = string.split(arg, ":")
	extraModules.append((path, name))
    elif (str == '--nofallback'):
	nofallback = 1
    elif (str == "--nomount"):
        rescue_nomount = 1
    elif (str == '--rescue'):
        progmode = 'rescue'
    elif (str == '--resolution'):
        # run native X server at specified resolution, ignore fb
        runres = arg
	runres_override = 1
    elif (str == '--noselinux'):
        flags.selinux = 0
    elif (str == '--selinux'):
        flags.selinux = 1
    elif (str == "--skipddc"):	
	skipddc = 1
    elif (str == "--autostep"):
	flags.autostep = 1
    elif (str == '-r' or str == '--rootpath'):
	rootPath = arg
	flags.setupFilesystems = 0
        flags.rootpath = 1
    elif (str == '--traceonly'):
	traceOnly = 1
    elif (str == '--serial'):
	flags.serial = 1
    elif (str == '-t' or str == '--test'):
	flags.test = 1
	flags.setupFilesystems = 0
    elif (str == '-T' or str == '--text'):
        display_mode = 't'
    elif (str == "-C" or str == "--cmdline"):
        display_mode = 'c'
    elif (str == '--kbdtype'):
        kbdtype = arg
    elif (str == '--virtpconsole'):
        flags.virtpconsole = arg
    elif (str == '--headless'):
        isHeadless = 1
    elif (str == '--usefbx'):
        useFBX = True
    elif (str == '--vnc'):
	flags.usevnc = 1

	# see if there is a vnc password file
	try:
	    pfile = open("/tmp/vncpassword.dat", "r")
	    vncpassword=pfile.readline().strip()
	    pfile.close()
	    os.unlink("/tmp/vncpassword.dat")
	except:
	    vncpassword=None
	    pass

	# check length of vnc password	
	if vncpassword is not None and len(vncpassword) < 6:
	    from snack import *
	    
	    screen = SnackScreen()
	    ButtonChoiceWindow(screen, _('VNC Password Error'),
				_('You need to specify a vnc password of at least 6 characters long.\n\n'
				  'Press <return> to reboot your system.\n'), 
				  buttons = (_("OK"),))
	    screen.finish()
	    sys.exit(0)
    elif (str == '--vncconnect'):
	cargs = string.split(arg, ":")
	vncconnecthost = cargs[0]
	if len(cargs) > 1:
	    if len(cargs[1]) > 0:
		vncconnectport = cargs[1]

#
# must specify install, rescue mode
#

if (progmode == 'rescue'):
    if (not method):
	sys.stderr.write('--method required for rescue mode\n')
	sys.exit(1)

    import rescue, instdata
    
    id = instdata.InstallData([], "fd0", method)
    rescue.runRescue(rootPath, not rescue_nomount, id)

    # shouldn't get back here
    sys.exit(1)
else:
    if (not method):
	sys.stderr.write('no install method specified\n')
	sys.exit(1)

#
# Here we have a hook to pull in second half of kickstart file via https
# if desired.
#
if ksfile is not None:
    from kickstart import pullRemainingKickstartConfig, KickstartError
    from kickstart import VNCHandlers
    from pykickstart.data import KickstartData
    from pykickstart.parser import KickstartParser

    try:
        rc = pullRemainingKickstartConfig(ksfile)
    except KickstartError, msg:
        rc = msg
    except:
        rc = _("Unknown Error")

    if rc is not None:
        stdoutLog.critical(_("Error pulling second part of kickstart config: %s!") % rc)
        sys.exit(1)

    # now see if they enabled vnc via the kickstart file. Note that command
    # line options for password, connect host and port override values in
    # kickstart file
    ksdata = KickstartData()
    ksparser = KickstartParser(ksdata, VNCHandlers(ksdata))
    ksparser.readKickstart(ksfile)

    ksusevnc = ksdata.vnc["enabled"]

    if ksusevnc:
        flags.usevnc = 1

        ksvncpasswd = ksdata.vnc["password"]
        ksvnchost = ksdata.vnc["host"]
        ksvncport = ksdata.vnc["port"]

        if vncpassword == None:
            vncpassword = ksvncpasswd

        if vncconnecthost == None:
            vncconnecthost = ksvnchost

        if vncconnectport == None:
            vncconnectport = ksvncport

#
# Determine install method - GUI or TUI
#
# use GUI by default except for install methods that were traditionally
# text based due to the requirement of a small stage 2
#
# if display_mode wasnt set by command line parameters then set default
#

if display_mode is None:
    if (method and
	method.startswith('ftp://') or
	method.startswith('http://')):
	display_mode = 't'
    else:
	display_mode = 'g'

if (debug):
    import pdb
    pdb.set_trace()

# let people be stupid
## # don't let folks do anything stupid on !s390
## if (not flags.test and os.getpid() > 90 and flags.setupFilesystems and
##     not iutil.getArch() == "s390"):
##     sys.stderr.write(
##         "You're running me on a live system! that's incredibly stupid.\n")
##     sys.exit(1)

import isys
import instdata
import floppy
import vnc

if not isHeadless:
    try:
        import xsetup
        import rhpxl.xhwstate as xhwstate
    except ImportError:
        isHeadless = 1
import rhpl.keyboard as keyboard

# handle traceonly and exit
if traceOnly:

    if display_mode == 'g':
        sys.stderr.write("traceonly is only supported for text mode\n")
        sys.exit(0)
    
    # prints a list of all the modules imported
    from text import InstallInterface
    from text import stepToClasses
    import pdb
    import warnings
    import image
    import harddrive
    import urlinstall
    import mimetools
    import mimetypes
    import syslogd
    import installclass
    import re
    import rescue
    import kickstart
    import whiteout
    import findpackageset
    import libxml2
    import cmdline
    import encodings.utf_8
    import encodings.idna
    import yuminstall

    installclass.availableClasses()

    if display_mode == 't':
        for step in stepToClasses.keys():
            if stepToClasses[step]:
                (mod, klass) = stepToClasses[step]
                exec "import %s" % mod
        
    for module in sys.__dict__['modules'].keys ():
        if module not in [ "__builtin__", "__main__" ]:
            foo = repr (sys.__dict__['modules'][module])
            bar = string.split (foo, "'")
            if len (bar) > 3:
                print bar[3]
        
    sys.exit(0)

log.info("Display mode = %s", display_mode)
log.info("Method = %s", method)

#
# override display mode if machine cannot nicely run X
#
if (not flags.test):
    if (iutil.memInstalled() < isys.MIN_GUI_RAM):
	stdoutLog.warning(_("You do not have enough RAM to use the graphical "
			    "installer.  Starting text mode."))
	display_mode = 't'
        time.sleep(2)


if iutil.memInstalled() < isys.MIN_RAM:
    from snack import *

    screen = SnackScreen()
    ButtonChoiceWindow(screen, _('Fatal Error'),
			_('You do not have enough RAM to install %s '
			  'on this machine.\n'
			  '\n'
			  'Press <return> to reboot your system.\n')
                       %(product.productName,), 
                       buttons = (_("OK"),))
    screen.finish()
    sys.exit(0)

#
# handle class passed from loader
#
if customClass:
    import installclass

    classes = installclass.availableClasses(showHidden=1)
    for (className, objectClass, logo) in classes:
	if className == customClass:
		instClass = objectClass(flags.expert)

    if not instClass:
	sys.stderr.write("installation class %s not available\n" % customClass)
	sys.stderr.write("\navailable classes:\n")
	for (className, objectClass, logo) in classes:
	    sys.stderr.write("\t%s\n" % className)
	sys.exit(1)

#
# if no instClass declared by user figure it out based on other cmdline args
#
if not instClass:
    from installclass import DefaultInstall, availableClasses
    instClass = DefaultInstall(flags.expert)

    allavail = availableClasses(showHidden = 1)
    avail = availableClasses(showHidden = 0)
    if len(avail) == 1:
        (cname, cobject, clogo) = avail[0]
        log.info("%s is only installclass, using it" %(cname,))
        instClass = cobject(flags.expert)
    elif len(allavail) == 1:
        (cname, cobject, clogo) = allavail[0]
        log.info("%s is only installclass, using it" %(cname,))
        instClass = cobject(flags.expert)        

# this lets install classes force text mode instlls
if instClass.forceTextMode:
    stdoutLog.info(_("Install class forcing text mode installation"))
    display_mode = 't'

#
# find out what video hardware is available to run installer 
#

# XXX kind of hacky - need to remember if we're running on an existing
#                     X display later to avoid some initilization steps
if os.environ.has_key('DISPLAY') and display_mode == 'g':
    x_already_set = 1
else:
    x_already_set = 0

if not isHeadless:
    #
    # Probe what is available for X and setup a hardware state
    #
    # try to probe interesting hw
    import rhpxl.xserver as xserver
    skipddcprobe = (skipddc or (x_already_set and flags.test))
    skipmouseprobe = not (not os.environ.has_key('DISPLAY') or flags.setupFilesystems)

    (videohw, monitorhw, mousehw) = xserver.probeHW(skipDDCProbe=skipddcprobe,
                                                    skipMouseProbe = skipmouseprobe)
    # if the len(videocards) is zero, then let's assume we're isHeadless
    if len(videohw.videocards) == 0:
        stdoutLog.info (_("No video hardware found, assuming headless"))
        videohw = None
        monitorhw = None
        mousehw = None
        isHeadless = 1
    else:
        # setup a X hw state for use later with configuration.  
        try:
            xcfg = xhwstate.XF86HardwareState(defcard=videohw,
                                              defmon=monitorhw)
        except Exception, e:
            stdoutLog.error (_("Unable to instantiate a X hardware state object."))
            xcfg = None
else:
    videohw = None
    monitorhw = None
    mousehw = None
    xcfg = None

# keyboard
kbd = keyboard.Keyboard()
if keymap:
    kbd.set(keymap)

#
# delay to let use see status of attempt to probe hw 
#
time.sleep(3)


#
# now determine if we're going to run in GUI or TUI mode
#
# if no X server, we have to use text mode
if not (flags.test or flags.rootpath) and (iutil.getArch() != "s390" and not os.access("/mnt/runtime/usr/X11R6/bin/Xorg", os.X_OK)):
     stdoutLog.warning(_("Graphical installation not available...  "
                         "Starting text mode."))
     time.sleep(2)
     display_mode = 't'

if not isHeadless:
    # if no mouse we force text mode
    mousedev = mousehw.get()
    if ksfile is None and not flags.usevnc and not os.environ.has_key("DISPLAY") and display_mode == 'g' and mousedev[0] == "No - mouse":
        # ask for the mouse type
	import rhpxl.mouse as mouse

	while 1:
	    mouserc = mouse.mouseWindow(mousehw)
	    if mouserc == 0:
		stdoutLog.warning(_("No mouse was detected.  A mouse is "
				    "required for graphical installation.  "
				    "Starting text mode."))
		display_mode = 't'
		time.sleep(2)
		break
	    elif mouserc == -1:
		# rescan
		mousehw.probe()
		mousedev = mousehw.get()
		if mousedev[0] != "No - mouse":
		    stdoutLog.info(_("Detected mouse type: %s"), mousehw.shortDescription())
		    time.sleep(5)
		    break
	    else:
		stdoutLog.info(_("Using mouse type: %s"), mousehw.shortDescription())
		break

	    
else: # s390/iSeries checks
    if display_mode == 'g' and not (os.environ.has_key('DISPLAY') or
                                    flags.usevnc):
	stdoutLog.warning(_("DISPLAY variable not set. Starting text mode!"))
        display_mode = 't'
        graphical_failed = 1
        time.sleep(2)

# if DISPLAY not set either vnc server failed to start or we're not
# running on a redirected X display, so start local X server
if display_mode == 'g' and not os.environ.has_key('DISPLAY') and not flags.usevnc:
    if iutil.getPPCMachine() == "PMac":
        runres = xhwstate.get_valid_resolution(videohw, monitorhw, runres,
                                               runres_override, onPMac=True)
    else:
        runres = xhwstate.get_valid_resolution(videohw, monitorhw, runres,
                                               runres_override)

    # make sure we can write log to ramfs
    if os.access("/tmp/ramfs", os.W_OK):
	xlogfile = "/tmp/ramfs/X.log"
    else:
	xlogfile = None

    xsetup_failed = False
    try:
        xcfg = xserver.startX(runres, videohw, monitorhw, mousehw, kbd,
                              logfile = xlogfile,
                              xStartedCB = doStartupX11Actions,
                              xQuitCB = doShutdownX11Actions, useFB = useFBX)
    except RuntimeError:
        xsetup_failed = True

    if xsetup_failed:
	stdoutLog.warning(" X startup failed, falling back to text mode")
	display_mode = 't'
        graphical_failed = 1
	time.sleep(2)

if display_mode == 't' and graphical_failed:
    ret = vnc.askVncWindow()
    if ret != -1:
        display_mode = 'g'
        flags.usevnc = 1
        if ret is not None:
            vncpassword = ret

# if they want us to use VNC do that now
if display_mode == 'g' and flags.usevnc:
    # dont run vncpassword if in test mode
    if flags.test:
	vncpassword = None
	
    startVNCServer(vncpassword=vncpassword,
		   vncconnecthost=vncconnecthost,
		   vncconnectport=vncconnectport)


# setup links required for all install types
for i in ( "services", "protocol", "nsswitch.conf", "joe", "selinux"):
    try:
        os.symlink ("../mnt/runtime/etc/" + i, "/etc/" + i)
    except:
        pass

#
# setup links required by graphical mode if installing and verify display mode
#
if (display_mode == 'g'):
    stdoutLog.info (_("Starting graphical installation..."))
    if not flags.test and flags.setupFilesystems:
        for i in ( "imrc", "im_palette.pal", "gtk-2.0", "pango", "fonts",
                   "fb.modes"):
            try:
                if os.path.exists("/mnt/runtime/etc/%s" %(i,)):
                    os.symlink ("../mnt/runtime/etc/" + i, "/etc/" + i)
            except:
                pass

    # display splash screen

    if nofallback:
	from splashscreen import splashScreenShow
	splashScreenShow()
	
        from gui import InstallInterface
    else:
        try:
	    from splashscreen import splashScreenShow
	    splashScreenShow()
	    
            from gui import InstallInterface
        except Exception, e:
            stdoutLog.error("Exception starting GUI installer: %s" %(e,))
            if flags.test:
                sys.exit(1)
            # if we're not going to really go into GUI mode, we need to get
            # back to vc1 where the text install is going to pop up.
	    if not x_already_set:
                isys.vtActivate (1)
            stdoutLog.warning("GUI installer startup failed, falling back to text mode.")
            display_mode = 't'
	    if 'DISPLAY' in os.environ.keys():
		del os.environ['DISPLAY']
            time.sleep(2)            

if (display_mode == 't'):
    from text import InstallInterface

if (display_mode == 'c'):
    from cmdline import InstallInterface


# go ahead and set up the interface
intf = InstallInterface ()

# imports after setting up the path
if method:
            #methodobj = NfsInstallMethod(method[5:], rootPath, intf)
#    if method.startswith('cdrom://'):
#        from image import CdromInstallMethod
#        methodobj = CdromInstallMethod(method[8:], rootPath, intf)
    if method.startswith('nfs:/'):
        from image import NfsInstallMethod
        methodobj = NfsInstallMethod(method[5:], rootPath, intf)
        from yuminstall import YumBackend 
        backend = YumBackend("file:///mnt/source", methodobj, rootPath)
#    elif method.startswith('nfsiso:/'):
#        from image import NfsIsoInstallMethod
#        methodobj = NfsIsoInstallMethod(method[8:], rootPath, intf)
    elif method.startswith('ftp://') or method.startswith('http://'):
        from urlinstall import UrlInstallMethod
        methodobj = UrlInstallMethod(method, rootPath, intf)
        from yuminstall import YumBackend 
        backend = YumBackend(method, methodobj, rootPath)
#    elif method.startswith('hd://'):
#        from harddrive import HardDriveInstallMethod
#        methodobj = HardDriveInstallMethod(method[5:], rootPath, intf)
    else:
    	intf.messageWindow("Install Method Unknown/Unavailable",
                           "Anaconda is undergoing major backend work "
                           "currently only some install methods are supported. "
                           "We apologise for any inconvenience. "
                           "Normal service will be resumed ASAP.")
        log.critical (_("unknown install method: %s"), method)
        sys.exit(1)

floppyDevice = floppy.probeFloppyDevice()

# create device nodes for detected devices if we're not running in test mode
if not flags.test and flags.setupFilesystems:
    iutil.makeDriveDeviceNodes()

id = instClass.installDataClass(extraModules, floppyDevice, method)

id.x_already_set = x_already_set

if mousehw:
    id.setMouse(mousehw)

if videohw:
    id.setVideoCard(videohw)

if monitorhw:
    id.setMonitor(monitorhw)

#
# not sure what to do here - somehow we didnt detect anything
#
if xcfg is None and not isHeadless:
    try:
	xcfg = xhwstate.XF86HardwareState()
    except Exception, e:
	stdoutLog.error (_("Unable to instantiate a X hardware state object."))
	xcfg = None

if xcfg is not None:
    xsetup = xsetup.XSetup(xcfg)

    # HACK - if user overrides resolution then use it and disable
    #	     choosing a sane default for them
    if runres_override:
	xsetup.imposed_sane_default = 1
	
    id.setXSetup(xsetup)

if kbd:
    id.setKeyboard(kbd)

instClass.setInstallData(id, intf)

dispatch = dispatch.Dispatcher(intf, id, methodobj, rootPath, backend)

if lang:
    dispatch.skipStep("language", permanent = 1)
    instClass.setLanguage(id, lang)
    instClass.setLanguageDefault(id, lang)

if keymap:
    dispatch.skipStep("keyboard", permanent = 1)
    instClass.setKeyboard(id, keymap)

# Skip the disk options in rootpath mode
if flags.rootpath:
    dispatch.skipStep("partitionmethod", permanent = 1)
    dispatch.skipStep("partitionmethodsetup", permanent = 1)
    dispatch.skipStep("autopartition", permanent = 1)
    dispatch.skipStep("autopartitionexecute", permanent = 1)
    dispatch.skipStep("fdisk", permanent = 1)
    dispatch.skipStep("bootloadersetup", permanent = 1)
    dispatch.skipStep("bootloader", permanent = 1)
    dispatch.skipStep("bootloaderadvanced", permanent = 1)
    dispatch.skipStep("upgbootloader", permanent = 1)

# set up the headless case
if isHeadless == 1:
    id.setHeadless(isHeadless)
    instClass.setAsHeadless(dispatch, isHeadless)

instClass.setSteps(dispatch)

# We shouldn't need this again
# XXX
#del id

#
# XXX This is surely broken
#
#if iutil.getArch() == "sparc":
#    import kudzu
#    mice = kudzu.probe (kudzu.CLASS_MOUSE, kudzu.BUS_UNSPEC, kudzu.PROBE_ONE);
#    if mice:
#	(mouseDev, driver, descr) = mice[0]
#	if mouseDev == 'sunmouse':
#	    instClass.addToSkipList("mouse")
#	    instClass.setMouseType("Sun - Mouse", "sunmouse")

# comment out the next line to make exceptions non-fatal
sys.excepthook = lambda type, value, tb, dispatch=dispatch, intf=intf: handleException(dispatch, intf, (type, value, tb))

try:
    intf.run(id, dispatch)
except SystemExit, code:
    intf.shutdown()
except:
    handleException(dispatch, intf, sys.exc_info())

del intf