calculate-utils-3-install/pym/install/variables/system.py

# -*- coding: utf-8 -*-

# Copyright 2008-2016 Mir Calculate. http://www.calculate-linux.org
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#      http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.

import os
import sys
import re
from os import path
from calculate.lib.datavars import (Variable, VariableError, ReadonlyVariable,
                                    TableVariable, PasswordError,
                                    DataVarsError, VariableInterface)
from calculate.install.fs_manager import FileSystemManager
from calculate.lib.utils.files import (readFile, getProgPath, process,
                                       readLinesFile, readFileEx)
from calculate.lib.utils.common import (getPasswdUsers, getUserGroups,
                                        getGroups, CmdlineParams)
from calculate.lib.utils.common import getValueFromConfig, getValueFromCmdLine
from calculate.lib.utils.common import getUserPrimaryGroup
from calculate.lib.utils.portage import isPkgInstalled
import calculate.lib.utils.device as device
from calculate.lib.encrypt import sha256_crypt
from calculate.lib.variables.system import RootType
import calculate.lib.variables.env as libenv
from calculate.lib.encrypt import get_shadow_hash, get_grub_hash
from calculate.core.server.admin import Admins
import calculate.lib.cl_ini_parser as cl_ini_parser
from calculate.lib.cl_template import SystemIni

from calculate.lib.cl_lang import setLocalTranslate, _

setLocalTranslate('cl_install3', sys.modules[__name__])


class UserHelper(VariableInterface):
    """
    Locale variables not using for flash installation
    """
    xorg_need = False
    stub_hash_value = "{SHA256}"

    def uncompatible(self):
        """
        User setting up unavailable for flash installation
        """
        if self.Get('os_install_root_type') == 'flash':
            return _("User configuration unavailable for Flash install")
        if self.Get('os_install_x11_server_set') == 'off' and self.xorg_need:
            return _("Autologin is available for Xorg sessions only")
        return ""


class GrubHelper(VariableInterface):
    grub_passwd_file = "/etc/grub.d/07_passwd"

    def read_hash_from_passwd(self):
        """
        Получить пароль из конфигурационного файла grub
        """
        data = readFile(self.grub_passwd_file)
        reRootPwd = re.compile(r"password_pbkdf2 root (\S+)")
        pwd = reRootPwd.search(data)
        if pwd:
            return pwd.group(1)
        return ""


class VariableOsInstallLibPath(ReadonlyVariable):
    """
    Использовать lib или lib64
    """
    def get(self):
        if self.Get('os_install_arch_machine') == 'x86_64':
            return "lib64"
        else:
            return "lib"


class VariableOsInstallPython(libenv.VariableOsPython):
    """
    Текущий python
    """
    def get_root(self):
        return self.Get('cl_chroot_path')

    def get_usrlib(self):
        return "/usr/%s" % self.Get('os_install_lib_path')


class VariableOsInstallScratch(ReadonlyVariable):
    """
    Install system in scratch mode
    """
    type = "bool"
    opt = ['--build']

    def get(self):
        # for installation default - normal system
        if self.Get('cl_action') == 'system':
            return "off"
        else:
            return self.Get('os_scratch')


class VariableOsFormatType(ReadonlyVariable):
    """
    Filesystem format support by calcualte-install
    """
    type = "list"

    def get(self):
        """Filesystem format support by calcualte-install"""
        return list(FileSystemManager.supportFS.keys())


class VariableOsFormatUse(ReadonlyVariable):
    """
    Avialable format by mkfs utility
    """
    type = "list"
    # (on or off) autoupdate config from install program
    cl_autoupdate_set = {
        'type': "bool",
        'value': "off"}

    def checkFunc(self, fs):
        if "format" in FileSystemManager.supportFS[fs] and \
                path.exists(FileSystemManager.supportFS[fs]["format"]):
            return "yes"
        return "no"

    def get(self):
        return list(map(self.checkFunc, self.Get('os_format_type')))


class VariableClMigrateRootPwdPlain(GrubHelper, UserHelper, Variable):
    """
    Root password
    """
    type = "password"
    opt = ["--root-password"]
    metavalue = 'PASSWORD'
    untrusted = True
    check_after = ["cl_grub"]

    def get(self):
        shadow_pwd = self.Get('cl_migrate_root_shadow_pwd')
        if shadow_pwd:
            return self.stub_hash_value
        return ""

    def init(self):
        self.help = _("specify the root password")
        self.label = _("Root password")

    def check(self, value):
        if not value and not self.Get('cl_migrate_root_shadow_pwd'):
            raise PasswordError(_("Enter password for user %s") % "root")
        # если plain пароля нет (есть только хэш), но требуется установить
        # пароль на grub (cl_grub_passwd_set), при этом нет 07_passwd
        if (value == self.stub_hash_value and
                not self.read_hash_from_passwd() and
                self.GetBool('cl_grub_passwd_set')):
            raise PasswordError(_("Please enter a root password for Grub"))


class VariableClMigrateRootPwd(ReadonlyVariable):
    """
    Хэш root пароля
    """
    def get(self):
        value = self.Get('cl_migrate_root_pwd_plain')

        if value and value != UserHelper.stub_hash_value:
            return get_shadow_hash().hash(value)

        return self.Get('cl_migrate_root_shadow_pwd')


class VariableClMigrateRootShadowPwd(ReadonlyVariable):
    """
    Хэш root пароля из файла /etc/shadow. Если пароль root, то
    содержит пустую строку
    """
    def get(self):
        rootPasswd = list(map(lambda x: x[1],
                         filter("root".__eq__,
                                map(lambda x: x.split(':')[0:2],
                                    readLinesFile('/etc/shadow')))))
        if rootPasswd:
            rootPasswd = rootPasswd[0]
        else:
            rootPasswd = ""
        # if root password is "root"
        enc = get_shadow_hash()
        if rootPasswd:
            if enc.identify(rootPasswd):
                if enc.verify("root", rootPasswd):
                    rootPasswd = ""
            else:
                rootPasswd = ""
        return rootPasswd or ""


class VariableClGrubPasswdSet(GrubHelper, Variable):
    """
    Использовать при установке системы пароль root как пароль для grub
    """
    type = 'bool'
    opt = ["--grub-passwd"]

    def init(self):
        self.help = _("use the root password to edit Grub")
        self.label = _("Use the root password to edit Grub")

    def get(self):
        if (self.read_hash_from_passwd() or
                    self.Get('os_root_type_ext') in RootType.Live):
            return Variable.On
        else:
            return Variable.Off


class VariableClGrubPwd(GrubHelper, Variable):
    """
    Хэш пароля на grub
    """
    opt = ["--passwd"]
    type = "password"

    def init(self):
        self.help = _("set grub password")
        self.label = _("Grub password")

    def get(self):
        system_action = self.Get('cl_action') == "system"
        if self.GetBool('cl_grub_remove_pwd_set'):
            return ""
        use_grub_passwd = self.GetBool('cl_grub_passwd_set')
        passwd_hash = self.read_hash_from_passwd()
        if passwd_hash:
            if not system_action or use_grub_passwd:
                return passwd_hash
        if use_grub_passwd:
            value = self.Get('cl_migrate_root_pwd_plain')
            if value and value != UserHelper.stub_hash_value:
                enc = get_grub_hash()
                return enc.hash(value)
        return ""

    def set(self, value):
        """
        Поддержка использвания как шифрованного хэша так и plain
        """
        enc = get_grub_hash()
        # используется hash
        if enc.identify(value):
            return value
        # отключение
        if value in ("", "none"):
            return ""
        # используется plain
        return enc.hash(value)

    def check(self, value):
        if value and self.GetBool('cl_grub_remove_pwd_set'):
            raise VariableError(
                _("You cannot set a password and remove the "
                  "existing password at a time"))


class VariableClGrubRemovePwdSet(Variable):
    """
    Удалить пароль из grub
    """
    type = "bool"
    guitype = "hidden"
    value = Variable.Off

    opt = ["--remove-passwd"]

    def init(self):
        self.help = _("remove the password protection for editing the Grub menu")
        self.label = _("Remove the password protection on Grub")


class VariableClInstallHomeCryptSet(UserHelper, Variable):
    type = 'bool'
    opt = ["--crypt-home", "-C"]
    untrusted = True

    def init(self):
        self.help = _("encrypt user profiles")
        self.label = _("Encrypt user profiles")

    def get(self):
        return ("off" if self.Get('cl_autologin')
                else self.Get('cl_home_crypt_set'))

    def check(self, value):
        if value == "on" and self.Get('cl_autologin'):
            raise VariableError(
                _("User profile encryption is uncompatible with autologin"))


class VariableClMigrateData(UserHelper, TableVariable):
    """
    User migrate data table
    """
    type = 'table'
    opt = ["--user", "-u"]
    metavalue = 'USER[:ADMIN[:GROUPS]]'
    source = ['cl_migrate_user', 'cl_migrate_admin',
              'cl_migrate_user_groups',
              'cl_migrate_user_pwd']
    untrusted = True

    def init(self):
        self.help = _("add a user to the installed system. USER is username. "
                      "ADMIN is administrator rights ({alllist}, "
                      "{none_value} by default). "
                      "GROUPS is list user supplimentary groups "
                      "(comma delimeter). "
                      "Use '{none_value}' value to discard user migration").format(
                        alllist="none, update, all", none_value="none")
        self.label = _("Migrating users")

    def set(self, value):
        value = [
            [x[0],
            VariableClMigrateAdmin.pre_set(x[1]),
            VariableClMigrateUserGroups.pre_set(x[2]),
            x[3]]
            for x in value
        ]
        if len(value) == 1:
            if len(value[0]) > 1 and value[0][0] == 'none':
                return [[]]
        return value


class VariableClMigrateDataBrief(UserHelper, TableVariable):
    """
    User migrate data table for brief view
    """
    source = ['cl_migrate_user', 'cl_migrate_admin', 'cl_migrate_user_groups']

    def init(self):
        self.label = _("Migrating users")


class VariableClMigrateUser(UserHelper, Variable):
    """
    Migrate users list
    """
    type = 'list'

    def init(self):
        self.label = _("User")

    def get(self):
        """
        Migrating users (users above 1000 uid)
        """
        cached_users = getPasswdUsers(
            datafile="var/lib/calculate/calculate-client/cache/create_passwd")
        return [x for x in getPasswdUsers() if x != "root" and x not in cached_users]

    def check(self, value):
        """
        Проверка на корректное имя пользователя
        """
        if any(not x for x in value):
            raise VariableError(_("Username is missing"))


class VariableClMigrateAdmin(UserHelper, Variable):
    """
    Migrate users list
    """
    type = 'choice-list'
    default_value = ""
    aliases = {'system_update': 'update'}

    def init(self):
        self.label = _("Administrator")

    def choice(self):
        return [
            ("", ""),
            ("update", _("System update")),
            ("all", _("Full access")),
        ]

    @classmethod
    def pre_set(cls, value):
        return {'none':''}.get(value, value)

    def get_alias(self, value):
        return self.aliases.get(value, value)

    def get(self):
        """
        Migrating users (users above 1000 uid)
        """
        admins = Admins(self.parent)
        return [self.get_alias(admins[x]) or self.default_value
                for x in self.Get('cl_migrate_user')]

    def set(self, value):
        return list(map(lambda x: x if x else self.default_value, value))


class VariableOsAvailableGroups(ReadonlyVariable):
    """
    Список доступных в дистрибутиве групп
    """
    type = 'list'

    def get(self):
        image = self.Get('cl_image')
        if image:
            with image:
                try:
                    distrPath = image.getDirectory()
                    return getGroups(distrPath)
                except DistributiveError:
                    pass
        return getGroups()

class VariableClMigrateUserGroups(UserHelper, Variable):
    """
    Migrate users groups
    """
    type = 'choice-list-list'
    defaultGroupList = sorted(["users", "audio", "cdrom", "video",
                        "cdrw", "usb", "plugdev", "games", "lp", "lpadmin",
                        "scanner", "uucp"])
    default_value = "default"

    @classmethod
    def pre_set(cls, value):
        """
        Обработать значение до передачи его из таблицы в поле
        """
        if not any(value):
            return [cls.default_value]
        else:
            return value

    def getDefaultGroups(self):
        return list(set(self.defaultGroupList) & set(self.Get('os_available_groups')))

    def init(self):
        self.label = _("Groups")

    def process_groups(self, values):
        groupslist = list(set(self.defaultGroupList) 
            & set(self.Get('os_available_groups')))
        for value in values:
            if value == self.default_value:
                for i in groupslist:
                    yield i
            else:
                yield value

    def set(self, value):
        value = list(map(lambda x: sorted(list(set(self.process_groups(x)))),
                    value))
        return value

    def getPrimaryGroup(self, username):
        pg = getUserPrimaryGroup(username)
        if pg:
            return [pg]
        return []

    def get(self):
        """
        User groups
        """
        passwdList = getPasswdUsers()
        return list(map(lambda x: sorted(self.getPrimaryGroup(x) +
                              (getUserGroups(x)
                               if x in passwdList else
                               self.getDefaultGroups())),
                   self.Get('cl_migrate_user')))

    def choice(self):
        """
        Available groups
        """
        return [(self.default_value,
            _("Default"))] + sorted([(x, x) for x in getGroups()])


class VariableClMigrateUserPwd(UserHelper, Variable):
    """
    Migrate users who need to change passwords
    """
    type = 'password-list'

    def init(self):
        self.label = _("Password")

    def get(self):
        """
        Migrating users passwords
        """
        retList = []
        fileName = "/etc/shadow"
        if os.access(fileName, os.R_OK):
            migrateusers = self.Get("cl_migrate_user")
            if migrateusers:
                lenData = 9
                with open(fileName) as f:
                    shadowData = list(filter(lambda x: len(x) == lenData,
                                        map(lambda x: x.rstrip().split(":"), f)))
                shadowData = list(filter(lambda x: x[0] in migrateusers, shadowData))
                shadowData = list(map(lambda x: (x[0], x[1]), shadowData))
                shadowUsers = list(map(lambda x: x[0], shadowData))
                for userName in migrateusers:
                    if userName in shadowUsers:
                        userData = list(filter(lambda x: x[0] == userName,
                                          shadowData))
                        hashPwd = userData[0][1]
                        if (sha256_crypt.identify(hashPwd) and
                            sha256_crypt.verify("guest", hashPwd)):
                            retList.append("")
                        else:
                            retList.append(hashPwd)
                    else:
                        retList.append("")
        return retList

    def check(self, value):
        """
        Check exists password for all migrate users
        """
        for user, pwd in zip(self.Get('cl_migrate_user'), value):
            if not pwd:
                raise PasswordError(
                    _("Enter password for user %s") % user)

    def set(self, value):
        """
        Encrypt passwords
        """
        shadow_hash = get_shadow_hash()

        return list(map(lambda x: x if shadow_hash.identify(x) or not x else \
            shadow_hash.hash(x), value))


class VariableClAutologin(UserHelper, Variable):
    """
    Autologin variable (contains user name for autologin) or

    empty string if disable
    """
    type = 'choiceedit'
    opt = ["--autologin", '-A']
    metavalue = "USER"
    xorg_need = True

    def init(self):
        self.label = _("Autologin")
        self.help = _("set an autologin for the user, 'off' for disable")

    def get(self):
        # autologin enable for livecd and all install type CMC
        cmdDomainSet = (getValueFromCmdLine(
            "calculate", CmdlineParams.DomainPassword) or
                        getValueFromCmdLine(
                            "calculate", CmdlineParams.Domain) or "")
        if (not cmdDomainSet and
                    self.Get('os_install_root_type') == "livecd") or \
                        self.Get('os_install_linux_shortname') == "CMC":
            nonRootUsers = list(filter(lambda x: x != "root",
                                  self.Get('cl_migrate_user')))
            if nonRootUsers:
                return nonRootUsers[0]
        else:
            return ""
        return ""

    def set(self, value):
        return {'none': '',
                'off': ''}.get(value, value)

    def choice(self):
        yield ("off", _("No autologin"))
        for user in (x for x in self.Get('cl_migrate_user')
                     if x != "root"):
            yield (user,user)

    def check(self, value):
        """
        Autologin only for migrated non-root users
        """
        if value and not value in self.Get('cl_migrate_user'):
            raise VariableError(_("User %s does not exist") % value)
        if value == "root":
            raise VariableError(
                _("Autologin is unavailable for user %s") % value)

    def humanReadable(self):
        return self.Get() or _("Not used")

    def uncompatible(self):
        """
        Network setting up unavailable for flash installation
        """
        try:
            if (self.Get('cl_action') == 'merge' and
                    self.Get('client.cl_remote_host')):
                return \
                    _("The autologin is not available with domain workstations")
        except DataVarsError:
            pass
        return UserHelper.uncompatible(self)


class VariableClInstallAutoupdateSet(Variable):
    """
    (on or off) autoupdate config from install program for install
    """
    type = "bool"
    value = "off"


class VariableOsInstallMakeopts(Variable):
    """
    Make.conf makeopts
    """

    def get(self):
        cpunum = self.Get('hr_cpu_num')
        if cpunum == "1":
            return "-j1"
        else:
            return "-j%d" % (int(cpunum) + 1)


class VariableOsGrubConf(ReadonlyVariable):
    """
    DEPRICATED content of current grub.conf
    """


class VariableOsInstallGrubDevicemapConf(ReadonlyVariable):
    """
    DEPRICATED content of device.map file for grub
    """
    os_install_grub_devicemap_conf = {}


class VariableClDistfilesPath(Variable):
    """
    DISTFILES path
    """
    value = '/var/calculate/remote/distfiles'


class VariableClPkgdirPath(Variable):
    """
    PKGDIR path
    """

    def get(self):
        return "/var/calculate/remote/packages/%s/%s" % (
            self.Get('os_install_linux_shortname'),
            self.Get('os_install_arch_machine'))


class VariableClInstallDevFrom(Variable):
    """
    Root device of previous installed os
    """

    def set(self, value):
        """
        If device in calculate3.env dev_from not exists set ''
        """
        if value:
            value = device.udev.get_device_info(
                name=value).get('DEVNAME', value)
        if value in self.Get('os_disk_dev'):
            return value
        else:
            return ""

    def get(self):
        if self.Get('cl_autopartition_set') == 'on':
            return self.Get('cl_autopartition_factory').dev_from
        return ""


class VariableOsNvidiaMask(ReadonlyVariable):
    """
    Get nvidia card mask versions
    """

    def get_cards_id(self):
        category = "0300"
        vendor = "10de:"
        lsPciProg = getProgPath("/usr/sbin/lspci")
        nvidiacards = list(filter(lambda x: " %s: " % category in x,
                             process(lsPciProg, "-d", vendor, "-n")))
        cardsid = \
            list(map(lambda x: x.groups()[0],
                filter(lambda x: x,
                       map(lambda x: re.search(
                           r"[0-9a-fA-F]{4}:([0-9a-fA-F]{4})", x),
                           nvidiacards))))
        if not cardsid:
            return set()
        return set(cardsid)

    def get_legacy(self):
        image = self.Get('cl_image')
        try:
            if image:
                image = image.convertToDirectory()
                chrootPath = image.getDirectory()
            else:
                chrootPath = self.Get("cl_chroot_path")
            nvidiaeclass = path.join(chrootPath,
                                     'usr/portage/eclass/nvidia-driver.eclass')
            if not os.access(nvidiaeclass, os.R_OK):
                return ""
            if not nvidiacards:
                return ""
            cardsid = self.get_cards_id()
            if not cardsid:
                return ""
            eclassdata = readFile(nvidiaeclass)
            reBlock = re.compile(
                r"if has \$\{nvidia_gpu\}\s+\\([^;]+);\s*then(.*?)fi", re.S)
            reMask = re.compile(r'>=x11-drivers/nvidia-drivers[^"]+')
            masks = []
            for block in reBlock.findall(eclassdata):
                nvidia_ids, mask_data = block
                nvidia_ids = nvidia_ids.strip().replace('\\','')
                nvidia_ids = {x for x in nvidia_ids.split() if x}
                m = reMask.search(mask_data)
                if m:
                    mask_str = m.group()
                if cardsid & nvidia_ids:
                    return mask_str
        finally:
            if image:
                image.close()
        return ""

    def get_new(self, ini):
        cardsid = self.get_cards_id()
        for nvidia_serie in ini.getKeys('nvidia'):
            nvidia_ids = set(ini.getVar('nvidia', nvidia_serie).split(','))
            if cardsid & nvidia_ids:
                if nvidia_serie.isdigit():
                    return ">=x11-drivers/nvidia-drivers-{}".format(int(nvidia_serie)+1)
        return ""

    def get(self):
        ini = SystemIni(self.parent)
        if ini.getKeys('nvidia'):
            return self.get_new(ini)
        else:
            return self.get_legacy()


class VariableOsInstallLvmSet(ReadonlyVariable):
    """
    Using lvm
    """
    type = "bool"

    def get(self):
        for typeDisk in self.Get('os_install_disk_type'):
            if "lvm" in typeDisk.lower():
                return "on"
        else:
            return "off"


class VariableOsInstallMdadmSet(ReadonlyVariable):
    """
    Using mdadm
    """
    type = "bool"

    def get(self):
        for typeDisk in self.Get('os_install_disk_type'):
            if "raid" in typeDisk.lower():
                return "on"
        else:
            return "off"


class VariableClChrootGrub(ReadonlyVariable):
    """
    Chroot for grub-mkconfig
    """

    def get(self):
        if self.Get('os_install_scratch') == "on":
            if self.Get('cl_action') == 'system':
                return self.Get('cl_target').mdirectory
            else:
                return path.join(self.Get('cl_chroot_path'), "mnt/scratch")
        else:
            return self.Get('cl_chroot_path')


class VariableOsGrub2Path(Variable):
    """
    Get Grub2 Install cmd (grub-install or grub2-install)
    """

    def get(self):
        # find grub2-install
        chroot_path = self.Get('cl_chroot_path')
        chroot_cmd = getProgPath('/usr/bin/chroot')
        grubInstall = getProgPath('/usr/sbin/grub2-install', prefix=chroot_path)
        if grubInstall:
            return grubInstall
        # find grub-install and check, that this is grub2-install (ver 1.99)
        grubInstall = getProgPath('/usr/sbin/grub-install', prefix=chroot_path)
        if grubInstall and list(filter(lambda x: "1.99" in x or "2." in x,
                                  process(chroot_cmd, chroot_path, 
                                          grubInstall, '--version'))):
            return grubInstall
        return ""


class VariableClSetup(Variable):
    """
    Type of setup
    """
    type = "choice"
    value = ""

    def choice(self):
        return ["audio", "network", "locale", "video", "boot", "users",
                "session", "themes", ""]

    def humanReadable(self):
        mapType = {'network': _("network settings"),
                   'locale': _("localization and time options"),
                   'video': _("video settings"),
                   'boot': _("boot parameters"),
                   'audio': _("audio parameters"),
                   'themes': _("update themes"),
                   'session': _("session settings"),
                   'users': _("user settings")}
        return mapType.get(self.Get(), "")

    def check(self, value):
        if value == "boot" and self.Get('os_install_root_type') == 'livecd':
            raise VariableError(
                _("Boot configuration is not available on a LiveCD"))


class VariableClLive(Variable):
    """
    Apply live templates
    """
    value = "off"
    type = "bool"
    opt = ['--live']

    def init(self):
        self.label = _("Configure dynamic options only")
        self.help = _("configure dynamic options only")


class VariableOsInstallPxe(Variable):
    """
    Installation for PXE loading
    """
    type = "boot"
    value = "off"
    untrusted = True

    def check(self, value):
        if value == "on":
            if self.Get('os_linux_system') != "server":
                raise VariableError(
                    _("PXE install is available for Calculate "
                      "Directory Server only") + '.')
            for pkg in ['net-misc/dhcp', 'net-ftp/tftp-hpa',
                        'net-fs/nfs-utils']:
                if not isPkgInstalled(pkg):
                    raise VariableError(
                        _("For PXE install, you need to install package %s")
                        % pkg)
            for env_fn in ('/etc/calculate/calculate.env',
                           '/var/lib/calculate/calculate.env'):
                try:
                    config = cl_ini_parser.iniParser(env_fn)
                    val = config.getVar('server', 'sr_dhcp_set')
                    if val.encode('utf-8') == "on":
                        return
                except Exception:
                    pass
            raise VariableError(
                _("PXE install is only available if the DHCP "
                  "service has been configured first"))


class VariableOsInstallPxePath(Variable):
    """
    Path to PXE installation
    """
    value = "/var/calculate/pxe"

    opt = ['--pxe-path']

    def init(self):
        self.label = _("Installation path")
        self.help = _("path for PXE install")


class VariableOsInstallUefiSet(Variable):
    """
    Install in UEFI
    """
    def get(self):
        if self.Get('os_install_uefi'):
            return "on"
        else:
            return "off"

class VariableOsInstallGrubTerminal(Variable):
    """
    Gfxmode
    """
    type = "choice"
    opt = ['--grub-terminal']
    metavalue = "TERMINAL"

    def init(self):
        self.label = _("Grub terminal")
        self.help = _("grub terminal")

    def get(self):
        cmdLine = '/proc/cmdline'
        if 'grub_nogfxmode' in readFile(cmdLine):
            return 'console'
        grubDefault = path.join(self.Get('cl_chroot_path'),
                                'etc/default/grub')
        if getValueFromConfig(grubDefault, 'GRUB_TERMINAL') == 'console':
            return 'console'
        grubCfg = '/boot/grub/grub.cfg'
        if re.search(r'^terminal_output\s*console', readFile(grubCfg), re.M):
            return 'console'

        return 'gfxterm'

    def choice(self):
        return ['gfxterm', 'console']

    def uncompatible(self):
        """
        Grub setting up unavailable for flash installation
        """
        if self.Get('os_install_root_type') == 'flash':
            return _("Grub configuration unavailable for Flash install")
        return ""


class PackageCheckVariable(ReadonlyVariable):
    """
    Конструктор для переменных проверки установлен ли пакет
    """
    image = False
    package = None
    type = "bool"
    image_variable = "cl_image"
    prefix_variable = "cl_chroot_path"

    def get(self):
        try:
            if self.image:
                image = self.Get(self.image_variable)
                if image:
                    with image as distr:
                        distrPath = image.getDirectory()
                        if isPkgInstalled(self.package, prefix=distrPath):
                            return "on"
            else:
                prefix = self.Get(self.prefix_variable)
                if isPkgInstalled(self.package, prefix=prefix):
                    return "on"
        except Exception:
            pass
        return "off"


class VariableOsInstallAlsaSet(PackageCheckVariable):
    """
    Установлен ли media-sound/alsa-utils
    """
    image = True
    package = "media-sound/alsa-utils"


class VariableOsInstallX11ServerSet(PackageCheckVariable):
    """
    Установлен ли x11-base/xorg-server
    """
    image = True
    package = "x11-base/xorg-server"


class VariableOsInstallSplashSet(Variable):
    """
    Переменная отображать splash при загрузки
    """
    type = "bool"
    value = "on"

class VariableClInstallFs(Variable):
    """
    Preferred fs
    """
    type = "list"

    value = ["btrfs", "ext4", "reiserfs", "ext3"]

class FlashUncompatible(VariableInterface):
    def uncompatible(self):
        """
        Update setting up unavailable for flash installation
        """
        if self.Get('os_install_root_type') == 'flash':
            return \
                _("Update configuration unavailable for Flash install")
        return ""


class VariableClInstallUpdatePkgSet(Variable):
    """
    При установке системы создать сценарии запуска cl-update в конце
    первой загрузки
    """
    type = "bool"
    opt = ["--update-pkg","-K"]

    def system_has_ip(self):
        return bool(self.Get('os_net_ip'))

    def custom_set_has_packages(self):
        install_short = self.Get('os_install_linux_shortname')
        now_short = self.Get('os_linux_shortname')
        setfile = "/etc/portage/sets/custom.{}".format(now_short.lower())
        if readFileEx(setfile, grab=True) and install_short == now_short:
            return True
        return False

    def get(self):
        if self.system_has_ip() and self.custom_set_has_packages():
            return "on"
        return "off"

    def init(self):
        self.help = _("update packages at first boot")
        self.label = _("Update packages at first boot")


try:
    import calculate.update.variables.update as update

    class VariableClInstallAutocheckSet(FlashUncompatible,
                                        update.VariableClUpdateAutocheckSet):
        def get(self):
            return self.Get('update.cl_update_autocheck_set')

    class VariableClInstallAutocheckInterval(FlashUncompatible,
                                             update.VariableClUpdateAutocheckInterval):
        def get(self):
            return self.Get('update.cl_update_autocheck_interval')

    class VariableClInstallCleanpkgSet(FlashUncompatible,
                                       update.VariableClUpdateCleanpkgSet):
        def get(self):
            return self.Get('update.cl_update_cleanpkg_set')

    class VariableClInstallOtherSet(FlashUncompatible,
                                    update.VariableClUpdateOtherSet):
        def get(self):
            return self.Get('update.cl_update_other_set')

except ImportError:
    update = None

    class VariableClInstallAutocheckSet(FlashUncompatible, Variable):
        value = "off"

    class VariableClInstallAutocheckInterval(FlashUncompatible, Variable):
        value = ""

    class VariableClInstallCleanpkgSet(FlashUncompatible, Variable):
        value = "off"

    class VariableClInstallOtherSet(FlashUncompatible, Variable):
        value = "off"