## loginsPage.py - show selinux mappings
## Copyright (C) 2006 Red Hat, Inc.

## 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; either version 2 of the License, or
## (at your option) any later version.

## 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., 675 Mass Ave, Cambridge, MA 02139, USA.

## Author: Dan Walsh
import sys
try:
    from subprocess import getstatusoutput
except ImportError:
    from commands import getstatusoutput

from gi.repository import GObject, Gtk
import seobject
from semanagePage import *

##
## I18N
##
PROGNAME = "selinux-gui"
try:
    import gettext
    kwargs = {}
    if sys.version_info < (3,):
        kwargs['unicode'] = True
    t = gettext.translation(PROGNAME,
                    localedir="/usr/share/locale",
                    **kwargs,
                    fallback=True)
    _ = t.gettext
except:
    try:
        import builtins
        builtins.__dict__['_'] = str
    except ImportError:
        import __builtin__
        __builtin__.__dict__['_'] = unicode


class loginsPage(semanagePage):

    def __init__(self, xml):
        self.firstTime = False
        semanagePage.__init__(self, xml, "logins", _("User Mapping"))
        self.store = Gtk.ListStore(GObject.TYPE_STRING, GObject.TYPE_STRING, GObject.TYPE_STRING)
        self.view.set_model(self.store)
        self.store.set_sort_column_id(0, Gtk.SortType.ASCENDING)
        col = Gtk.TreeViewColumn(_("Login\nName"), Gtk.CellRendererText(), text=0)
        col.set_sort_column_id(0)
        col.set_resizable(True)
        self.view.append_column(col)
        col = Gtk.TreeViewColumn(_("SELinux\nUser"), Gtk.CellRendererText(), text=1)
        col.set_resizable(True)
        self.view.append_column(col)
        col = Gtk.TreeViewColumn(_("MLS/\nMCS Range"), Gtk.CellRendererText(), text=2)
        col.set_resizable(True)
        self.view.append_column(col)
        self.load()
        self.loginsNameEntry = xml.get_object("loginsNameEntry")
        self.loginsSelinuxUserCombo = xml.get_object("loginsSelinuxUserCombo")
        self.loginsMLSEntry = xml.get_object("loginsMLSEntry")

    def load(self, filter=""):
        self.filter = filter
        self.login = seobject.loginRecords()
        dict = self.login.get_all(0)
        self.store.clear()
        for k in sorted(dict.keys()):
            range = seobject.translate(dict[k][1])
            if not (self.match(k, filter) or self.match(dict[k][0], filter) or self.match(range, filter)):
                continue
            iter = self.store.append()
            self.store.set_value(iter, 0, k)
            self.store.set_value(iter, 1, dict[k][0])
            self.store.set_value(iter, 2, range)
        self.view.get_selection().select_path((0,))

    def __dialogSetup(self):
        if self.firstTime:
            return
        self.firstTime = True
        liststore = Gtk.ListStore(GObject.TYPE_STRING)
        self.loginsSelinuxUserCombo.set_model(liststore)
        cell = Gtk.CellRendererText()
        self.loginsSelinuxUserCombo.pack_start(cell, True)
        self.loginsSelinuxUserCombo.add_attribute(cell, 'text', 0)

        selusers = seobject.seluserRecords().get_all(0)
        for k in sorted(selusers.keys()):
            if k != "system_u":
                self.loginsSelinuxUserCombo.append_text(k)

        iter = liststore.get_iter_first()
        while liststore.get_value(iter, 0) != "user_u":
            iter = liststore.iter_next(iter)
        self.loginsSelinuxUserCombo.set_active_iter(iter)

    def dialogInit(self):
        self.__dialogSetup()
        store, iter = self.view.get_selection().get_selected()
        self.loginsNameEntry.set_text(store.get_value(iter, 0))
        self.loginsNameEntry.set_sensitive(False)

        self.loginsMLSEntry.set_text(store.get_value(iter, 2))
        seuser = store.get_value(iter, 1)
        liststore = self.loginsSelinuxUserCombo.get_model()
        iter = liststore.get_iter_first()
        while iter != None and liststore.get_value(iter, 0) != seuser:
            iter = liststore.iter_next(iter)
        if iter != None:
            self.loginsSelinuxUserCombo.set_active_iter(iter)

    def dialogClear(self):
        self.__dialogSetup()
        self.loginsNameEntry.set_text("")
        self.loginsNameEntry.set_sensitive(True)
        self.loginsMLSEntry.set_text("s0")

    def delete(self):
        store, iter = self.view.get_selection().get_selected()
        try:
            login = store.get_value(iter, 0)
            if login == "root" or login == "__default__":
                raise ValueError(_("Login '%s' is required") % login)

            self.wait()
            (rc, out) = getstatusoutput("semanage login -d %s" % login)
            self.ready()
            if rc != 0:
                self.error(out)
                return False
            store.remove(iter)
            self.view.get_selection().select_path((0,))
        except ValueError as e:
            self.error(e.args[0])

    def add(self):
        target = self.loginsNameEntry.get_text().strip()
        serange = self.loginsMLSEntry.get_text().strip()
        if serange == "":
            serange = "s0"
        list_model = self.loginsSelinuxUserCombo.get_model()
        iter = self.loginsSelinuxUserCombo.get_active_iter()
        seuser = list_model.get_value(iter, 0)
        self.wait()
        (rc, out) = getstatusoutput("semanage login -a -s %s -r %s %s" % (seuser, serange, target))
        self.ready()
        if rc != 0:
            self.error(out)
            return False

        iter = self.store.append()
        self.store.set_value(iter, 0, target)
        self.store.set_value(iter, 1, seuser)
        self.store.set_value(iter, 2, seobject.translate(serange))

    def modify(self):
        target = self.loginsNameEntry.get_text().strip()
        serange = self.loginsMLSEntry.get_text().strip()
        if serange == "":
            serange = "s0"
        list_model = self.loginsSelinuxUserCombo.get_model()
        iter = self.loginsSelinuxUserCombo.get_active_iter()
        seuser = list_model.get_value(iter, 0)
        self.wait()
        (rc, out) = getstatusoutput("semanage login -m -s %s -r %s %s" % (seuser, serange, target))
        self.ready()
        if rc != 0:
            self.error(out)
            return False

        store, iter = self.view.get_selection().get_selected()
        self.store.set_value(iter, 0, target)
        self.store.set_value(iter, 1, seuser)
        self.store.set_value(iter, 2, seobject.translate(serange))