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# this is the prototypical class for workstation, server, and kickstart 
# installs
#
# The interface to BaseInstallClass is *public* -- ISVs/OEMs can customize the
# install by creating a new derived type of this class.
#
# Copyright 1999-2006 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.
#

import os, sys, iutil
import string
import language
import rhpl
import imputil

from instdata import InstallData
from partitioning import *
from autopart import getAutopartitionBoot, autoCreatePartitionRequests, autoCreateLVMPartitionRequests

from rhpl.translate import _, N_

import logging
log = logging.getLogger("anaconda")

from flags import flags
from constants import *

class BaseInstallClass:
    # default to not being hidden
    hidden = 0
    pixmap = None
    showMinimal = 1
    showLoginChoice = 0
    _description = ""
    _descriptionFields = ()
    regkeydesc = None
    name = "base"
    pkgstext = ""
    # default to showing the upgrade option
    showUpgrade = True

    # list of of (txt, grplist) tuples for task selection screen
    tasks = []

    # dict of repoid: (baseurl, mirrorurl) tuples for additional repos
    repos = {}
    
    # don't select this class by default
    default = 0

    # don't force text mode
    forceTextMode = 0

    # allow additional software repositories beyond the base to be configured
    allowExtraRepos = True

    # by default, place this under the "install" category; it gets it's
    # own toplevel category otherwise
    parentClass = ( _("Install on System"), "install.png" )

    # we can use a different install data class
    installDataClass = InstallData

    # install key related bits
    skipkeytext = None
    instkeyname = None
    allowinstkeyskip = True
    instkeydesc = None
    installkey = None
    skipkey = False

    def _get_description(self):
        return _(self._description) % self._descriptionFields
    description = property(_get_description)

    def postAction(self, anaconda, serial):
	pass

    def setBootloader(self, id, location=None, forceLBA=0, password=None,
                      md5pass=None, appendLine="", driveorder = []):
        if appendLine:
            id.bootloader.args.set(appendLine)
        id.bootloader.setForceLBA(forceLBA)
        if password:
            id.bootloader.setPassword(password, isCrypted = 0)
        if md5pass:
            id.bootloader.setPassword(md5pass)
        if location != None:
            id.bootloader.defaultDevice = location
        else:
            id.bootloader.defaultDevice = -1

        # XXX throw out drives specified that don't exist.  anything else
        # seems silly
        if driveorder and len(driveorder) > 0:
            new = []
            for drive in driveorder:
                if drive in id.bootloader.drivelist:
                    new.append(drive)
                else:
                    log.warning("requested drive %s in boot drive order "
                                "doesn't exist" %(drive,))
            id.bootloader.drivelist = new

    def setIgnoredDisks(self, id, drives):
        diskset = id.diskset
        for drive in drives:
            if not drive in diskset.skippedDisks:
                diskset.skippedDisks.append(drive)
        
    def setClearParts(self, id, clear, drives = None, initAll = False):
	id.partitions.autoClearPartType = clear
        id.partitions.autoClearPartDrives = drives
        if initAll:
            id.partitions.reinitializeDisks = initAll

    def setSteps(self, anaconda):
        dispatch = anaconda.dispatch
	dispatch.setStepList(
		 "language",
		 "keyboard",
		 "welcome",
                 "findrootparts",
		 "betanag",
		 "installtype",
                 "partitionobjinit",
                 "parttype",
                 "autopartitionexecute",
                 "partition",
		 "partitiondone",
		 "bootloadersetup",                 
		 "bootloader",
                 "networkdevicecheck",
		 "network",
		 "timezone",
		 "accounts",
                 "reposetup",
                 "basepkgsel",
		 "tasksel",                                  
		 "postselection",
		 "confirminstall",
		 "install",
		 "enablefilesystems",
                 "migratefilesystems",
                 "setuptime",
                 "preinstallconfig",
		 "installpackages",
                 "postinstallconfig",
		 "writeconfig",
                 "firstboot",
		 "instbootloader",
                 "dopostaction",
                 "postscripts",
		 "writexconfig",
		 "writeksconfig",
                 "writeregkey",
                 "methodcomplete",
                 "copylogs",
                 "setfilecon",
		 "complete"
		)

	if not BETANAG:
	    dispatch.skipStep("betanag", permanent=1)

        if rhpl.getArch() != "i386" and rhpl.getArch() != "x86_64":
            dispatch.skipStep("bootloader", permanent=1)

        # allow backends to disable interactive package selection
        if not anaconda.backend.supportsPackageSelection:
            dispatch.skipStep("tasksel", skip = 1)

        # allow install classes to turn off the upgrade 
        if not self.showUpgrade or not anaconda.backend.supportsUpgrades:
            dispatch.skipStep("findrootparts", skip = 1)

        # 'noupgrade' can be used on the command line to force not looking
        # for partitions to upgrade.  useful in some cases...
        if flags.cmdline.has_key("noupgrade"):
            dispatch.skipStep("findrootparts", skip = 1)

        # upgrade will also always force looking for an upgrade. 
        if flags.cmdline.has_key("upgrade"):
            dispatch.skipStep("findrootparts", skip = 0)

        # if there's only one install class, it doesn't make much sense
        # to show it
        if len(availableClasses()) < 2:
            dispatch.skipStep("installtype", permanent=1)

    # called from anaconda so that we can skip steps in the headless case
    # in a perfect world, the steps would be able to figure this out
    # themselves by looking at instdata.headless.  but c'est la vie.
    def setAsHeadless(self, dispatch, isHeadless = 0):
        if isHeadless == 0:
            pass
        else:
	    dispatch.skipStep("keyboard", permanent = 1)
	    dispatch.skipStep("writexconfig", permanent = 1)

    # modifies the uri from installmethod.getMethodUri() to take into
    # account any installclass specific things including multiple base
    # repositories.  takes a string, returns a list of strings
    def getPackagePaths(self, uri):
        return { "base": uri }

    def handleRegKey(self, key, intf):
        pass

    def setPackageSelection(self, anaconda):
	pass

    def setGroupSelection(self, anaconda):
	pass

    def setZeroMbr(self, id, zeroMbr):
        id.partitions.zeroMbr = zeroMbr

    def setKeyboard(self, id, kb):
	id.keyboard.set(kb)

    def setHostname(self, id, hostname, override = 0):
	id.network.setHostname(hostname);
        id.network.overrideDHCPhostname = override

    def setNameserver(self, id, nameserver):
        id.network.setDNS(nameserver)

    def setGateway(self, id, gateway):
        id.network.setGateway(gateway)

    def setTimezoneInfo(self, id, timezone, asUtc = 0, asArc = 0):
	id.timezone.setTimezoneInfo(timezone, asUtc, asArc)

    def setAuthentication(self, id, authStr):
        id.auth = authStr

    def setNetwork(self, id, bootProto, ip, netmask, ethtool, device = None, onboot = 1, dhcpclass = None, essid = None, wepkey = None):
	if bootProto:
	    devices = id.network.netdevices
            firstdev = id.network.getFirstDeviceName()
	    if (devices and bootProto):
		if not device:
                    if devices.has_key(firstdev):
                        device = firstdev
                    else:
                        list = devices.keys ()
                        list.sort()
                        device = list[0]
		dev = devices[device]
                dev.set (("bootproto", bootProto))
                dev.set (("dhcpclass", dhcpclass))
		if onboot:
		    dev.set (("onboot", "yes"))
		else:
		    dev.set (("onboot", "no"))
                if bootProto == "static":
                    if (ip):
                        dev.set (("ipaddr", ip))
                    if (netmask):
                        dev.set (("netmask", netmask))
                if ethtool:
                    dev.set (("ethtool_opts", ethtool))
                if isys.isWireless(device):
                    if essid:
                        dev.set(("essid", essid))
                    if wepkey:
                        dev.set(("wepkey", wepkey))

    def setLanguageDefault(self, id, default):
	id.instLanguage.setDefault(default)

    def setLanguage(self, id, nick):
	id.instLanguage.setRuntimeLanguage(nick)

    def setDesktop(self, id, desktop):
	id.desktop.setDefaultDesktop (desktop)

    def setSELinux(self, id, sel):
        id.security.setSELinux(sel)

    def setFirewall(self, id, enable = 1, trusts = [], ports = []):
	id.firewall.enabled = enable
	id.firewall.trustdevs = trusts

	for port in ports:
	    id.firewall.portlist.append (port)
        
    def setMiscXSettings(self, id, depth = None, resolution = None,
                         desktop = None, runlevel = None):
        if depth:
            id.xsetup.xserver.hwstate.set_colordepth(depth)

        if resolution:
            id.xsetup.xserver.hwstate.set_resolution(resolution)

        if desktop is not None:
            id.desktop.setDefaultDesktop(desktop)
        if runlevel is not None:
            id.desktop.setDefaultRunLevel(runlevel)

    def setMonitor(self, id, hsync = None, vsync = None, monitorName = None):
        if monitorName:
            usemon = monitorName
        elif id.monitor.getMonitorID() != "Unprobed Monitor":
	    usemon = id.monitor.getMonitorName()
        else:
            usemon = None

        setmonitor = 0
        if usemon:
            monname = usemon
            try:
                (model, eisa, vert, horiz) = id.monitor.lookupMonitorByName(usemon)
		if id.monitor.getMonitorID() != "DDCPROBED":
		    useid = model
		else:
		    useid = "DDCPROBED"

                if not vsync:
                    vsync = vert
                if not hsync:
                    hsync = horiz
		    
                id.monitor.setSpecs(hsync, vsync, id=useid, name=model)
                setmonitor = 1
            except:
                log.warning("Couldnt lookup monitor type %s." % usemon)
                pass
        else:
            monname = "Unprobed Monitor"

        if not setmonitor and hsync and vsync:
            id.monitor.setSpecs(hsync, vsync)
            setmonitor = 1

        if not setmonitor:
             # fall back to standard VGA
             log.warning("Could not probe monitor, and no fallback specified.")
             log.warning("Falling back to Generic VGA monitor")

             try:
                 hsync = "31.5-37.9"
                 vsync = "50.0-61.0"
                 monname = "Unprobed Monitor"
                 id.monitor.setSpecs(hsync, vsync)
             except:
                 raise RuntimeError, "Could not probe monitor and fallback failed."

        # shove into hw state object, force it to recompute available modes
        id.xsetup.xserver.hwstate.monitor = id.monitor
        id.xsetup.xserver.hwstate.set_monitor_name(monname)
        id.xsetup.xserver.hwstate.set_hsync(hsync)
        id.xsetup.xserver.hwstate.set_vsync(vsync)
        id.xsetup.xserver.hwstate.recalc_mode()

    def setVideoCard(self, id, driver = None, videoRam = None):
        primary = id.videocard.primaryCard()

        # rhpxl no longer gives us a list of drivers, so always just trust
        # what the user gave us.
        if driver:
            log.info("Setting video card driver to user value of %s" % driver)
            primary.setDriver(driver)
            id.xsetup.xserver.hwstate.set_videocard_name(primary.getDescription())
            id.xsetup.xserver.hwstate.set_videocard_driver(driver)

        if videoRam:
            # FIXME: this required casting is ugly
            primary.setVideoRam(str(videoRam))
            id.xsetup.xserver.hwstate.set_videocard_ram(int(videoRam))

    def configureX(self, id, driver = None, videoRam = None, resolution = None, depth = None, startX = 0):
        self.setVideoCard(id, driver, videoRam)

        if startX:
            rl = 5
        else:
            rl = 3
        self.setMiscXSettings(id, depth, resolution, runlevel = rl)

    def setMouse(self, id, mouseType, device = None, emulThree = -1):
        import rhpxl.mouse as mouse

        # blindly trust what we're told
        mouse = mouse.Mouse(skipProbe = 1)
        mouseName = mouse.mouseToMouse()[mouseType]
        mouse.set(mouseName, emulThree, device)
        id.setMouse(mouse)

    def getMethod(self, methodstr):
        if methodstr.startswith('cdrom://'):
            from image import CdromInstallMethod
            return CdromInstallMethod
        elif methodstr.startswith('nfs:/'):
            from image import NfsInstallMethod
            return NfsInstallMethod
        elif methodstr.startswith('nfsiso:/'):
            from image import NfsIsoInstallMethod
            return NfsIsoInstallMethod
        elif methodstr.startswith('ftp://') or methodstr.startswith('http://'):
            from urlinstall import UrlInstallMethod
            return UrlInstallMethod
        elif methodstr.startswith('hd://'):
            from harddrive import HardDriveInstallMethod
            return HardDriveInstallMethod
        else:
            return None

    def getBackend(self, methodstr):
        # this should be overriden in distro install classes
        from backend import AnacondaBackend
        return AnacondaBackend

    def setDefaultPartitioning(self, partitions, clear = CLEARPART_TYPE_LINUX,
                               doClear = 1, useLVM = True):
        autorequests = [ ("/", None, 1024, None, 1, 1, 1) ]

        bootreq = getAutopartitionBoot()
        if bootreq:
            autorequests.extend(bootreq)

        (minswap, maxswap) = iutil.swapSuggestion()
        autorequests.append((None, "swap", minswap, maxswap, 1, 1, 1))

        if doClear:
            partitions.autoClearPartType = clear
            partitions.autoClearPartDrives = []

        if useLVM:
            partitions.autoPartitionRequests = autoCreateLVMPartitionRequests(autorequests)
        else:
            partitions.autoPartitionRequests = autoCreatePartitionRequests(autorequests)        


    def setInstallData(self, anaconda):
	anaconda.id.reset(anaconda)
	anaconda.id.instClass = self

	# Classes should call these on __init__ to set up install data
	#id.setKeyboard()
	#id.setLanguage()
	#id.setNetwork()
	#id.setFirewall()
	#id.setLanguageDefault()
	#id.setTimezone()
	#id.setAuthentication()
	#id.setHostname()
	#id.setDesktop()
	#id.setMouse()

	# These are callbacks used to let classes configure packages
	#id.setPackageSelection()
	#id.setGroupSelection()

    def __init__(self, expert):
	pass

allClasses = []
allClasses_hidden = []

# returns ( className, classObject, classLogo ) tuples
def availableClasses(showHidden=0):
    global allClasses
    global allClasses_hidden

    if not showHidden:
        if allClasses: return allClasses
    else:
        if allClasses_hidden: return allClasses_hidden

    if os.access("installclasses", os.R_OK):
	path = "installclasses"
    elif os.access("/mnt/source/RHupdates/installclasses", os.R_OK):
        path = "/mnt/source/RHupdates/installclasses"
    elif os.access("/tmp/updates/installclasses", os.R_OK):
        path = "/tmp/updates/installclasses"
    elif os.access("/tmp/product/installclasses", os.R_OK):
        path = "/tmp/product/installclasses"
    else:
	path = "/usr/lib/anaconda/installclasses"

    # append the location of installclasses to the python path so we
    # can import them
    sys.path.append(path)

    files = os.listdir(path)
    done = {}
    list = []
    for file in files:
	if file[0] == '.': continue
        if len (file) < 4:
	    continue
	if file[-3:] != ".py" and file[-4:-1] != ".py":
	    continue
	mainName = string.split(file, ".")[0]
	if done.has_key(mainName): continue
	done[mainName] = 1

        try:
            found = imputil.imp.find_module(mainName)
        except:
            log.warning ("module import of %s failed: %s" % (mainName, sys.exc_type))
            continue

        try:
            loaded = imputil.imp.load_module(mainName, found[0], found[1], found[2])

            obj = loaded.InstallClass

	    if obj.__dict__.has_key('sortPriority'):
		sortOrder = obj.sortPriority
	    else:
		sortOrder = 0

	    if obj.__dict__.has_key('arch'):
                if obj.arch != rhpl.getArch ():
                    obj.hidden = 1
                
            if obj.hidden == 0 or showHidden == 1:
                list.append(((obj.name, obj, obj.pixmap), sortOrder))
        except:
            log.warning ("module import of %s failed: %s" % (mainName, sys.exc_type))
            if flags.debug: raise
            else: continue

    list.sort(ordering)
    for (item, priority) in list:
        if showHidden:
            allClasses_hidden.append(item)
        else:
            allClasses.append(item)

    if showHidden:
        return allClasses_hidden
    else:
        return allClasses

def ordering(first, second):
    ((name1, obj, logo), priority1) = first
    ((name2, obj, logo), priority2) = second

    if priority1 < priority2:
	return -1
    elif priority1 > priority2:
	return 1

    if name1 < name2:
	return -1
    elif name1 > name2:
	return 1

    return 0

def getBaseInstallClass():
    # figure out what installclass we should base on.
    allavail = availableClasses(showHidden = 1)
    avail = availableClasses(showHidden = 0)
    if len(avail) == 1:
        (cname, cobject, clogo) = avail[0]
        log.info("using only installclass %s" %(cname,))
    elif len(allavail) == 1:
        (cname, cobject, clogo) = allavail[0]
        log.info("using only installclass %s" %(cname,))

    # Use the highest priority install class if more than one found.
    elif len(avail) > 1:
        (cname, cobject, clogo) = avail.pop()
        log.info('%s is the highest priority installclass, using it' % cname)
    elif len(allavail) > 1:
        (cname, cobject, clogo) = allavail.pop()
        log.info('%s is the highest priority installclass, using it' % cname)

    # Default to the base installclass if nothing else is found.
    else:
        cobject = BaseInstallClass
        log.info("using baseinstallclass as base")

    return cobject

baseclass = getBaseInstallClass()

# we need to be able to differentiate between this and custom
class DefaultInstall(baseclass):
    def __init__(self, expert):
	BaseInstallClass.__init__(self, expert)