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#!/usr/bin/env python
#
# Copyright (C) 2012-2013 Red Hat, Inc. All rights reserved.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
#
# Authors: Michal Minar <miminar@redhat.com>
#
"""
Unit tests for LMI_SoftwareIdentity provider.
"""
import os
import pywbem
import re
import socket
import subprocess
import unittest
import base
import rpmcache
RE_CHECKSUM = re.compile(r'^([0-9a-fA-F]+)\s+.*')
class TestSoftwareIdentityFileCheck(
base.SoftwareBaseTestCase): #pylint: disable=R0904
"""
Basic cim operations test.
"""
CLASS_NAME = "LMI_SoftwareIdentityFileCheck"
KEYS = ("CheckID", "Name", "SoftwareElementID", "SoftwareElementState")
# maps algorithm id to the shell command
HASH_COMMAND = {
1 : "md5sum",
2 : "sha1sum",
8 : "sha256sum",
9 : "sha384sum",
10 : "sha512sum",
11 : "sha224sum"
}
# maps algorithm id to the length of digest string
HASH_DIGEST_LENGTH = {
1 : 32, #MD5
2 : 40, #SHA1
8 : 64, #SHA256
9 : 96, #SHA384
10 : 128, #SHA512
11 : 56 #SHA224
}
@classmethod
def needs_pkgdb_files(cls):
return True
def make_checksum_str(self, csumnum, filename):
"""
@return checksum of installed file
"""
return RE_CHECKSUM.match(subprocess.check_output([
self.HASH_COMMAND[csumnum], filename])).group(1).lower()
def make_op(self, pkg, file_name, newer=True):
"""
:rtype: (``pywbem.CIMInstanceName``) object path of
SoftwareIdentityFileCheck
"""
objpath = self.objpath.copy()
objpath["CheckID"] = 'LMI:LMI_SoftwareIdentityFileCheck'
objpath["Name"] = file_name
objpath["SoftwareElementID"] = pkg.get_nevra(
newer=newer, with_epoch="ALWAYS")
objpath["SoftwareElementState"] = pywbem.Uint16(2) #Executable
objpath["TargetOperatingSystem"] = pywbem.Uint16(36) #LINUX
objpath["Version"] = getattr(pkg, 'up_evra' if newer else 'evra')
return objpath
def do_check_symlink(self, pkg, filepath, inst, safe=False):
"""
Assert some details about symlink.
:param safe: (``bool``) If True, no modification is done to file.
"""
target = os.readlink(filepath)
stats = os.lstat(filepath)
self.assertEqual(pywbem.Uint16(3), inst["FileType"],
"Unexpected file type of symlink for %s:%s"%(
pkg.name, filepath))
self.assertEqual(stats.st_uid, inst["UserID"],
"Unexpected uid of symlink for %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_gid, inst["GroupID"],
"Unexpected gid of symlink for %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_mode, inst["FileMode"],
"Unexpected mode of symlink for %s:%s" %(pkg.name, filepath))
self.assertEqual(stats.st_size, inst["FileSize"],
"Unexpected size of symlink for %s:%s"%(pkg.name, filepath))
self.assertEqual(target, inst["LinkTarget"],
"Unexpected size of symlink for %s:%s"%(pkg.name, filepath))
self.assertEqual(int(stats.st_mtime), inst["LastModificationTime"],
"Unexpected mtime of symlink for %s:%s"%(pkg.name, filepath))
self.assertIsNone(inst["Checksum"],
"Checksum should be None for symlink %s:%s"%(
pkg.name, filepath))
self.assertIsNone(inst["FileChecksum"],
"FileChecksum should be None for symlink %s:%s"%(
pkg.name, filepath))
self.assertIsNone(inst["MD5Checksum"],
"MD5Checksum should be None for symlink %s:%s"%(
pkg.name, filepath))
if safe:
return
# modify owner
prev_user = inst["UserID"]
os.lchown(filepath, stats.st_uid + 1, -1)
inst = self.conn.GetInstance(InstanceName=inst.path)
self.assertEqual(inst["UserIDOriginal"] + 1, inst["UserID"],
"Unexpected uid of modified symlink for %s:%s"%(
pkg.name, filepath))
self.assertEqual(prev_user + 1, inst["UserID"],
"Unexpected uid of modified symlink for %s:%s"%(
pkg.name, filepath))
self.assertEqual(stats.st_gid, inst["GroupID"],
"Unexpected gid of modified symlink for %s:%s"%(
pkg.name, filepath))
self.assertEqual([
pywbem.Uint16(7) #UserID
], inst["FailedFlags"])
# modify link_target
os.remove(filepath)
lt_modif = "wrong" + "*"*len(inst["LinkTargetOriginal"])
os.symlink(lt_modif, filepath)
os.lchown(filepath, inst["UserIDOriginal"], inst["GroupIDOriginal"])
inst = self.conn.GetInstance(InstanceName=inst.path)
self.assertEqual(set([
pywbem.Uint16(1), #FileSize
pywbem.Uint16(6), #LinkTarget
]), set(inst["FailedFlags"]))
self.assertGreater(len(inst["LinkTarget"]),
len(inst["LinkTargetOriginal"]))
self.assertTrue(inst["FileExists"],
"File %s:%s should exist"%(pkg.name, filepath))
self.assertEqual(inst["FileTypeOriginal"], inst["FileType"],
"File type should match for symlink %s:%s"%(pkg.name, filepath))
self.assertNotEqual(inst["FileSizeOriginal"], inst["FileSize"],
"File size should not match for symlink %s:%s"%(
pkg.name, filepath))
self.assertEqual(inst["FileModeOriginal"], inst["FileMode"],
"File mode should match for symlink %s:%s"%(pkg.name, filepath))
self.assertEqual(lt_modif, inst["LinkTarget"],
"Link target should match modified path %s:%s"%(
pkg.name, filepath))
self.assertNotEqual(inst["LinkTargetOriginal"], inst["ListTarget"],
"Link target should not match for symlink %s:%s"%(
pkg.name, filepath))
self.assertEqual(inst["UserIDOriginal"], inst["UserID"],
"File uid should match for symlink %s:%s"%(pkg.name, filepath))
self.assertEqual(inst["GroupIDOriginal"], inst["GroupID"],
"File gid should match for symlink %s:%s"%(pkg.name, filepath))
def do_check_directory(self, pkg, filepath, inst):
"""
Assert some details about directory.
"""
stats = os.lstat(filepath)
self.assertEqual(pywbem.Uint16(2), inst["FileType"],
"Unexpected type for directory %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_uid, inst["UserID"],
"Unexpected uid for directory %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_gid, inst["GroupID"],
"Unexpected gid for directory %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_mode, inst["FileMode"],
"Unexpected mode for directory %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_size, inst["FileSize"],
"Unexpected size for directory %s:%s"%(pkg.name, filepath))
self.assertIs(inst["LinkTarget"], None)
self.assertIsNone(inst["FileChecksum"],
"Unexpected checksum for directory %s:%s"%(pkg.name, filepath))
self.assertEqual(int(stats.st_mtime), inst["LastModificationTime"],
"Unexpected mtime for directory %s:%s"%(pkg.name, filepath))
self.assertEqual([], inst["FailedFlags"])
def do_check_file(self, pkg, filepath, inst, safe=False):
"""
Assert some details about regular file.
:param safe: (``bool``) If True, no modification is done to file.
"""
stats = os.lstat(filepath)
self.assertEqual(pywbem.Uint16(1), inst["FileType"],
"Unexpected file type for %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_uid, inst["UserID"],
"Unexpected file uid for %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_gid, inst["GroupID"],
"Unexpected gid for regular file %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_mode, inst["FileMode"],
"Unexpected mode for regular file %s:%s"%(pkg.name, filepath))
self.assertEqual(stats.st_size, inst["FileSize"],
"Unexpected size for regular file %s:%s"%(pkg.name, filepath))
self.assertIs(inst["LinkTarget"], None)
csum = self.make_checksum_str(inst['ChecksumType'], filepath)
self.assertEqual(csum, inst["FileChecksum"].lower(),
"Unexpected checksum for regular file %s:%s"%(pkg.name, filepath))
self.assertEqual(inst["LastModificationTime"],
inst["LastModificationTimeOriginal"],
"Unexpected mtime for regular file %s:%s"%(pkg.name, filepath))
self.assertEqual(int(stats.st_mtime), inst["LastModificationTime"],
"Unexpected mtime for regular file %s:%s"%(pkg.name, filepath))
if safe:
return
# make it longer
with open(filepath, "a+") as fobj:
fobj.write("data\n")
inst = self.conn.GetInstance(InstanceName=inst.path)
self.assertEqual(set([
pywbem.Uint16(1), #FileSize
pywbem.Uint16(3), #Checksum
pywbem.Uint16(9), #LastModificationTime
]), set(inst["FailedFlags"]))
self.assertGreater(inst["FileSize"], inst["FileSizeOriginal"],
"File size should be greater, then expected for regular file"
" %s:%s"%(pkg.name, filepath))
self.assertGreater(inst["LastModificationTime"],
inst["LastModificationTimeOriginal"],
"Unexpected mtime for regular file %s:%s"%(pkg.name, filepath))
self.assertTrue(inst["FileExists"],
"Regular file should exist %s:%s"%(pkg.name, filepath))
# change file type
os.remove(filepath)
os.symlink(filepath, filepath)
os.lchown(filepath, inst["UserIDOriginal"],
inst["GroupIDOriginal"])
inst = self.conn.GetInstance(InstanceName=inst.path)
self.assertNotEqual(inst["LinkTargetOriginal"], inst["LinkTarget"],
"Link target should not match for %s:%s"%(pkg.name, filepath))
self.assertNotEqual(inst["FileSizeOriginal"], inst["FileSize"],
"File size should not match for %s:%s"%(pkg.name, filepath))
self.assertGreater(inst["LastModificationTime"],
inst["LastModificationTimeOriginal"],
"File mtime should be greater than expected for %s:%s"%(
pkg.name, filepath))
self.assertNotEqual(inst["FileTypeOriginal"], inst["FileType"],
"File type should not match for %s:%s"%(pkg.name, filepath))
self.assertEqual(pywbem.Uint16(3), inst["FileType"],
"File type should match for %s:%s"%(pkg.name, filepath))
self.assertIn(pywbem.Uint16(2), #FileMode
inst["FailedFlags"])
# remove it
os.remove(filepath)
inst = self.conn.GetInstance(InstanceName=inst.path)
self.assertEqual(inst["LinkTargetOriginal"], inst["LinkTarget"],
"Link target does not match for regular file %s:%s"%(
pkg.name, filepath))
self.assertNotEqual(inst["FileSizeOriginal"], inst["FileSize"],
"File size should not match for regular file %s:%s"%(
pkg.name, filepath))
self.assertIsNone(inst["LastModificationTime"])
self.assertIsNone(inst["FileType"])
self.assertIsNone(inst["FileChecksum"])
self.assertIsNone(inst["FileMode"])
self.assertIsNone(inst["UserID"])
self.assertIsNone(inst["GroupID"])
self.assertEqual([
pywbem.Uint16(0), #exists
], inst["FileExists"])
def check_filepath(self, pkg, filepath, safe=False):
"""
Make a check of particular file of package.
All files are expected to have no flaw.
:param safe: (``bool``) says, whether modifications to file can be done
"""
objpath = self.make_op(pkg, filepath)
inst = self.conn.GetInstance(InstanceName=objpath)
self.assertIsInstance(inst, pywbem.CIMInstance)
self.assertEqual(objpath, inst.path,
msg="Object paths of instance must match for %s:%s"%(
pkg.name, filepath))
for key in self.KEYS:
if key.lower() == "targetoperatingsystem":
self.assertIsInstance(objpath[key], (int, long))
else:
self.assertEqual(objpath[key], inst[key],
"OP key %s values should match for %s:%s"%(
key, pkg.name, filepath))
self.assertTrue(inst["FileExists"],
"File %s:%s must exist"%(pkg.name, filepath))
self.assertEqual(0, len(inst["FailedFlags"]),
"FailedFlags must be empty")
for prop in ( "FileType", "UserID", "GroupID"
, "FileMode", "FileSize", "LinkTarget"
, "FileChecksum", "FileModeFlags"):
if ( ( ( os.path.islink(filepath)
or (not os.path.isfile(filepath)))
and prop == "FileSize")
or (os.path.islink(filepath) and prop == "FileMode")):
continue
self.assertEqual(inst[prop+"Original"], inst[prop],
"%s should match for %s:%s"%(prop, pkg.name, filepath))
if os.path.islink(filepath):
self.do_check_symlink(pkg, filepath, inst, safe=safe)
elif os.path.isdir(filepath):
self.do_check_directory(pkg, filepath, inst)
elif os.path.isfile(filepath):
self.do_check_file(pkg, filepath, inst, safe=safe)
def test_get_instance_safe(self):
"""
Tests GetInstance call.
"""
for pkg in self.safe_pkgs:
files = self.pkgdb_files[pkg.name]
for filepath in files:
self.check_filepath(pkg, filepath, safe=True)
def test_enum_instance_names(self):
"""
Tests EnumInstanceNames - which should not be supported.
"""
self.assertRaisesCIM(pywbem.CIM_ERR_NOT_SUPPORTED,
self.conn.EnumerateInstanceNames, ClassName=self.CLASS_NAME)
def test_invoke_method_safe(self):
"""
Test Invoke method in a safe manner.
"""
for pkg in self.safe_pkgs:
files = self.pkgdb_files[pkg.name]
for filepath in files:
objpath = self.make_op(pkg, filepath)
(rval, _) = self.conn.InvokeMethod(
MethodName="Invoke",
ObjectName=objpath)
self.assertEqual(pywbem.Uint32(0), #Satisfied
rval,
msg="Invoke method should be successful for %s:%s"%(
pkg.name, filepath))
(rval, _) = self.conn.InvokeMethod(
MethodName="InvokeOnSystem",
ObjectName=objpath,
TargetSystem=pywbem.CIMInstanceName(
namespace="root/cimv2",
classname="Linux_ComputerSystem",
keybindings=pywbem.NocaseDict({
"CreationClassName" : "Linux_ComputerSystem",
"Name" : socket.getfqdn()})))
self.assertEqual(pywbem.Uint32(0), #Satisfied
rval, msg="InvokeOnSystem method should be successful"
" for %s:%s"%(pkg.name, filepath))
self.assertRaisesCIM(pywbem.CIM_ERR_NOT_FOUND,
self.conn.InvokeMethod,
MethodName="InvokeOnSystem",
ObjectName=objpath,
TargetSystem=pywbem.CIMInstanceName(
namespace="root/cimv2",
classname="Linux_ComputerSystem",
keybindings=pywbem.NocaseDict({
"CreationClassName" : "Bad class name",
"Name" : "some random name"})))
@base.mark_dangerous
def test_invoke_method(self):
"""
Tests Invoke method invocation.
"""
for pkg in self.dangerous_pkgs:
if not rpmcache.is_pkg_installed(pkg.name):
rpmcache.install_pkg(pkg.name)
for filepath in self.pkgdb_files[pkg.name]:
objpath = self.make_op(pkg, filepath)
(rval, _) = self.conn.InvokeMethod(
MethodName="Invoke",
ObjectName=objpath)
self.assertEqual(pywbem.Uint32(0) #Satisfied
, rval,
msg="Invoke method should be successful for %s:%s"%(
pkg.name, filepath))
# modify file
if os.path.isfile(filepath):
os.remove(filepath)
else:
os.lchown(filepath, os.stat(filepath).st_uid + 1, -1)
(rval, _) = self.conn.InvokeMethod(
MethodName="Invoke",
ObjectName=objpath)
self.assertEqual(
pywbem.Uint32(2), #Not Satisfied
rval,
"Invoke method should not pass for modified file %s:%s"%(
pkg.name, filepath))
def suite():
"""For unittest loaders."""
return unittest.TestLoader().loadTestsFromTestCase(
TestSoftwareIdentityFileCheck)
if __name__ == '__main__':
unittest.main()
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