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#!/usr/bin/python

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# Copyright (C) 2006, 2007, 2010, 2011 Google Inc.

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# This program is free software; you can redistribute it and/or modify

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# 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.

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# You should have received a copy of the GNU General Public License

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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Script for testing ganeti.utils.io (tests that require root access)"""

import os

import tempfile

import shutil

import errno

import grp

import pwd

import stat

from ganeti import constants

from ganeti import utils

from ganeti import compat

from ganeti import errors

import testutils

class TestWriteFile(testutils.GanetiTestCase):

  def setUp(self):

    testutils.GanetiTestCase.setUp(self)

    self.tmpdir = None

    self.tfile = tempfile.NamedTemporaryFile()

    self.did_pre = False

    self.did_post = False

    self.did_write = False

  def tearDown(self):

    testutils.GanetiTestCase.tearDown(self)

    if self.tmpdir:

      shutil.rmtree(self.tmpdir)

  def testFileUid(self):

    self.tmpdir = tempfile.mkdtemp()

    target = utils.PathJoin(self.tmpdir, "target")

    tuid = os.geteuid() + 1

    utils.WriteFile(target, data="data", uid=tuid + 1)

    self.assertFileUid(target, tuid + 1)

    utils.WriteFile(target, data="data", uid=tuid)

    self.assertFileUid(target, tuid)

    utils.WriteFile(target, data="data", uid=tuid + 1,

                    keep_perms=utils.KP_IF_EXISTS)

    self.assertFileUid(target, tuid)

    utils.WriteFile(target, data="data", keep_perms=utils.KP_ALWAYS)

    self.assertFileUid(target, tuid)

  def testNewFileUid(self):

    self.tmpdir = tempfile.mkdtemp()

    target = utils.PathJoin(self.tmpdir, "target")

    tuid = os.geteuid() + 1

    utils.WriteFile(target, data="data", uid=tuid,

                    keep_perms=utils.KP_IF_EXISTS)

    self.assertFileUid(target, tuid)

  def testFileGid(self):

    self.tmpdir = tempfile.mkdtemp()

    target = utils.PathJoin(self.tmpdir, "target")

    tgid = os.getegid() + 1

    utils.WriteFile(target, data="data", gid=tgid + 1)

    self.assertFileGid(target, tgid + 1)

    utils.WriteFile(target, data="data", gid=tgid)

    self.assertFileGid(target, tgid)

    utils.WriteFile(target, data="data", gid=tgid + 1,

                    keep_perms=utils.KP_IF_EXISTS)

    self.assertFileGid(target, tgid)

    utils.WriteFile(target, data="data", keep_perms=utils.KP_ALWAYS)

    self.assertFileGid(target, tgid)

  def testNewFileGid(self):

    self.tmpdir = tempfile.mkdtemp()

    target = utils.PathJoin(self.tmpdir, "target")

    tgid = os.getegid() + 1

    utils.WriteFile(target, data="data", gid=tgid,

                    keep_perms=utils.KP_IF_EXISTS)

    self.assertFileGid(target, tgid)

class TestCanRead(testutils.GanetiTestCase):

  def setUp(self):

    testutils.GanetiTestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

    self.confdUid = pwd.getpwnam(constants.CONFD_USER).pw_uid

    self.masterdUid = pwd.getpwnam(constants.MASTERD_USER).pw_uid

    self.masterdGid = grp.getgrnam(constants.MASTERD_GROUP).gr_gid

  def tearDown(self):

    testutils.GanetiTestCase.tearDown(self)

    if self.tmpdir:

      shutil.rmtree(self.tmpdir)

  def testUserCanRead(self):

    target = utils.PathJoin(self.tmpdir, "target1")

    f=open(target, "w")

    f.close()

    utils.EnforcePermission(target, 0400, uid=self.confdUid,

                            gid=self.masterdGid)

    self.assertTrue(utils.CanRead(constants.CONFD_USER, target))

    if constants.CONFD_USER != constants.MASTERD_USER:

      self.assertFalse(utils.CanRead(constants.MASTERD_USER, target))

  def testGroupCanRead(self):

    target = utils.PathJoin(self.tmpdir, "target2")

    f=open(target, "w")

    f.close()

    utils.EnforcePermission(target, 0040, uid=self.confdUid,

                            gid=self.masterdGid)

    self.assertFalse(utils.CanRead(constants.CONFD_USER, target))

    if constants.CONFD_USER != constants.MASTERD_USER:

      self.assertTrue(utils.CanRead(constants.MASTERD_USER, target))

    utils.EnforcePermission(target, 0040, uid=self.masterdUid+1,

                            gid=self.masterdGid)

    self.assertTrue(utils.CanRead(constants.MASTERD_USER, target))

if __name__ == "__main__":

  testutils.GanetiTestProgram()