Synnefo » snf-ganeti

#!/usr/bin/python

#

# Copyright (C) 2012 Google 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., 51 Franklin Street, Fifth Floor, Boston, MA

# 02110-1301, USA.

"""Script for testing ganeti.tools.prepare_node_join"""

import unittest

import shutil

import tempfile

import os.path

import OpenSSL

from ganeti import errors

from ganeti import constants

from ganeti import serializer

from ganeti import pathutils

from ganeti import compat

from ganeti import utils

from ganeti.tools import prepare_node_join

import testutils

_JoinError = prepare_node_join.JoinError

class TestLoadData(unittest.TestCase):

  def testNoJson(self):

    self.assertRaises(errors.ParseError, prepare_node_join.LoadData, "")

    self.assertRaises(errors.ParseError, prepare_node_join.LoadData, "}")

  def testInvalidDataStructure(self):

    raw = serializer.DumpJson({

      "some other thing": False,

      })

    self.assertRaises(errors.ParseError, prepare_node_join.LoadData, raw)

    raw = serializer.DumpJson([])

    self.assertRaises(errors.ParseError, prepare_node_join.LoadData, raw)

  def testValidData(self):

    raw = serializer.DumpJson({})

    self.assertEqual(prepare_node_join.LoadData(raw), {})

class TestVerifyCertificate(testutils.GanetiTestCase):

  def setUp(self):

    testutils.GanetiTestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

  def tearDown(self):

    testutils.GanetiTestCase.tearDown(self)

    shutil.rmtree(self.tmpdir)

  def testNoCert(self):

    prepare_node_join.VerifyCertificate({}, _verify_fn=NotImplemented)

  def testMismatchingKey(self):

    other_cert = self._TestDataFilename("cert1.pem")

    node_cert = self._TestDataFilename("cert2.pem")

    self.assertRaises(_JoinError, prepare_node_join._VerifyCertificate,

                      utils.ReadFile(other_cert), _noded_cert_file=node_cert)

  def testGivenPrivateKey(self):

    cert_filename = self._TestDataFilename("cert2.pem")

    cert_pem = utils.ReadFile(cert_filename)

    self.assertRaises(_JoinError, prepare_node_join._VerifyCertificate,

                      cert_pem, _noded_cert_file=cert_filename)

  def testMatchingKey(self):

    cert_filename = self._TestDataFilename("cert2.pem")

    # Extract certificate

    cert = OpenSSL.crypto.load_certificate(OpenSSL.crypto.FILETYPE_PEM,

                                           utils.ReadFile(cert_filename))

    cert_pem = OpenSSL.crypto.dump_certificate(OpenSSL.crypto.FILETYPE_PEM,

                                               cert)

    prepare_node_join._VerifyCertificate(cert_pem,

                                         _noded_cert_file=cert_filename)

  def testMissingFile(self):

    cert = self._TestDataFilename("cert1.pem")

    nodecert = utils.PathJoin(self.tmpdir, "does-not-exist")

    prepare_node_join._VerifyCertificate(utils.ReadFile(cert),

                                         _noded_cert_file=nodecert)

  def testInvalidCertificate(self):

    self.assertRaises(errors.X509CertError,

                      prepare_node_join._VerifyCertificate,

                      "Something that's not a certificate",

                      _noded_cert_file=NotImplemented)

  def testNoPrivateKey(self):

    cert = self._TestDataFilename("cert1.pem")

    self.assertRaises(errors.X509CertError,

                      prepare_node_join._VerifyCertificate,

                      utils.ReadFile(cert), _noded_cert_file=cert)

class TestVerifyClusterName(unittest.TestCase):

  def setUp(self):

    unittest.TestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

  def tearDown(self):

    unittest.TestCase.tearDown(self)

    shutil.rmtree(self.tmpdir)

  def testNoName(self):

    self.assertRaises(_JoinError, prepare_node_join.VerifyClusterName,

                      {}, _verify_fn=NotImplemented)

  def testMissingFile(self):

    tmpfile = utils.PathJoin(self.tmpdir, "does-not-exist")

    prepare_node_join._VerifyClusterName(NotImplemented,

                                         _ss_cluster_name_file=tmpfile)

  def testMatchingName(self):

    tmpfile = utils.PathJoin(self.tmpdir, "cluster_name")

    for content in ["cluster.example.com", "cluster.example.com\n\n"]:

      utils.WriteFile(tmpfile, data=content)

      prepare_node_join._VerifyClusterName("cluster.example.com",

                                           _ss_cluster_name_file=tmpfile)

  def testNameMismatch(self):

    tmpfile = utils.PathJoin(self.tmpdir, "cluster_name")

    for content in ["something.example.com", "foobar\n\ncluster.example.com"]:

      utils.WriteFile(tmpfile, data=content)

      self.assertRaises(_JoinError, prepare_node_join._VerifyClusterName,

                        "cluster.example.com", _ss_cluster_name_file=tmpfile)

class TestUpdateSshDaemon(unittest.TestCase):

  def setUp(self):

    unittest.TestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

    self.keyfiles = {

      constants.SSHK_RSA:

        (utils.PathJoin(self.tmpdir, "rsa.private"),

         utils.PathJoin(self.tmpdir, "rsa.public")),

      constants.SSHK_DSA:

        (utils.PathJoin(self.tmpdir, "dsa.private"),

         utils.PathJoin(self.tmpdir, "dsa.public")),

      }

  def tearDown(self):

    unittest.TestCase.tearDown(self)

    shutil.rmtree(self.tmpdir)

  def testNoKeys(self):

    data_empty_keys = {

      constants.SSHS_SSH_HOST_KEY: [],

      }

    for data in [{}, data_empty_keys]:

      for dry_run in [False, True]:

        prepare_node_join.UpdateSshDaemon(data, dry_run,

                                          _runcmd_fn=NotImplemented,

                                          _keyfiles=NotImplemented)

    self.assertEqual(os.listdir(self.tmpdir), [])

  def _TestDryRun(self, data):

    prepare_node_join.UpdateSshDaemon(data, True, _runcmd_fn=NotImplemented,

                                      _keyfiles=self.keyfiles)

    self.assertEqual(os.listdir(self.tmpdir), [])

  def testDryRunRsa(self):

    self._TestDryRun({

      constants.SSHS_SSH_HOST_KEY: [

        (constants.SSHK_RSA, "rsapriv", "rsapub"),

        ],

      })

  def testDryRunDsa(self):

    self._TestDryRun({

      constants.SSHS_SSH_HOST_KEY: [

        (constants.SSHK_DSA, "dsapriv", "dsapub"),

        ],

      })

  def _RunCmd(self, fail, cmd, interactive=NotImplemented):

    self.assertTrue(interactive)

    self.assertEqual(cmd, [pathutils.DAEMON_UTIL, "reload-ssh-keys"])

    if fail:

      exit_code = constants.EXIT_FAILURE

    else:

      exit_code = constants.EXIT_SUCCESS

    return utils.RunResult(exit_code, None, "stdout", "stderr",

                           utils.ShellQuoteArgs(cmd),

                           NotImplemented, NotImplemented)

  def _TestUpdate(self, failcmd):

    data = {

      constants.SSHS_SSH_HOST_KEY: [

        (constants.SSHK_DSA, "dsapriv", "dsapub"),

        (constants.SSHK_RSA, "rsapriv", "rsapub"),

        ],

      }

    runcmd_fn = compat.partial(self._RunCmd, failcmd)

    if failcmd:

      self.assertRaises(_JoinError, prepare_node_join.UpdateSshDaemon,

                        data, False, _runcmd_fn=runcmd_fn,

                        _keyfiles=self.keyfiles)

    else:

      prepare_node_join.UpdateSshDaemon(data, False, _runcmd_fn=runcmd_fn,

                                        _keyfiles=self.keyfiles)

    self.assertEqual(sorted(os.listdir(self.tmpdir)), sorted([

      "rsa.public", "rsa.private",

      "dsa.public", "dsa.private",

      ]))

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.tmpdir, "rsa.public")),

                     "rsapub")

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.tmpdir, "rsa.private")),

                     "rsapriv")

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.tmpdir, "dsa.public")),

                     "dsapub")

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.tmpdir, "dsa.private")),

                     "dsapriv")

  def testSuccess(self):

    self._TestUpdate(False)

  def testFailure(self):

    self._TestUpdate(True)

class TestUpdateSshRoot(unittest.TestCase):

  def setUp(self):

    unittest.TestCase.setUp(self)

    self.tmpdir = tempfile.mkdtemp()

    self.sshdir = utils.PathJoin(self.tmpdir, ".ssh")

  def tearDown(self):

    unittest.TestCase.tearDown(self)

    shutil.rmtree(self.tmpdir)

  def _GetHomeDir(self, user):

    self.assertEqual(user, constants.SSH_LOGIN_USER)

    return self.tmpdir

  def testNoKeys(self):

    data_empty_keys = {

      constants.SSHS_SSH_ROOT_KEY: [],

      }

    for data in [{}, data_empty_keys]:

      for dry_run in [False, True]:

        prepare_node_join.UpdateSshRoot(data, dry_run,

                                        _homedir_fn=NotImplemented)

    self.assertEqual(os.listdir(self.tmpdir), [])

  def testDryRun(self):

    data = {

      constants.SSHS_SSH_ROOT_KEY: [

        (constants.SSHK_RSA, "aaa", "bbb"),

        ]

      }

    prepare_node_join.UpdateSshRoot(data, True,

                                    _homedir_fn=self._GetHomeDir)

    self.assertEqual(os.listdir(self.tmpdir), [".ssh"])

    self.assertEqual(os.listdir(self.sshdir), [])

  def testUpdate(self):

    data = {

      constants.SSHS_SSH_ROOT_KEY: [

        (constants.SSHK_DSA, "privatedsa", "ssh-dss pubdsa"),

        ]

      }

    prepare_node_join.UpdateSshRoot(data, False,

                                    _homedir_fn=self._GetHomeDir)

    self.assertEqual(os.listdir(self.tmpdir), [".ssh"])

    self.assertEqual(sorted(os.listdir(self.sshdir)),

                     sorted(["authorized_keys", "id_dsa", "id_dsa.pub"]))

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.sshdir, "id_dsa")),

                     "privatedsa")

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.sshdir, "id_dsa.pub")),

                     "ssh-dss pubdsa")

    self.assertEqual(utils.ReadFile(utils.PathJoin(self.sshdir,

                                                   "authorized_keys")),

                     "ssh-dss pubdsa\n")

if __name__ == "__main__":

  testutils.GanetiTestProgram()