mirror of
https://github.com/aquasecurity/kube-bench.git
synced 2024-11-22 16:18:07 +00:00
f2caa1f0ec
* test: fix TestGetConfigFilePath This test wasn't correctly creating the test file due to the wrong directory permissions on the temp file. This wasn't detected due to a lack of error checking. Also, the code was only checking for file not exist rather than lack of permission to read file (or any other error). The combination of these two things means the test wasn't checking what it thought it was checking, and passed more by luck than judgment. * add getYamlFilesFromDir * add getTestYamlFiles and test * docs: Update master / node help text * return path + filename from getYamlFilesFromDir * subcommand run to run specific section files
512 lines
17 KiB
Go
512 lines
17 KiB
Go
// Copyright © 2017 Aqua Security Software Ltd. <info@aquasec.com>
|
|
//
|
|
// 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.
|
|
|
|
package cmd
|
|
|
|
import (
|
|
"io/ioutil"
|
|
"os"
|
|
"path/filepath"
|
|
"reflect"
|
|
"strconv"
|
|
"testing"
|
|
|
|
"github.com/aquasecurity/kube-bench/check"
|
|
"github.com/spf13/viper"
|
|
)
|
|
|
|
var g string
|
|
var e []error
|
|
var eIndex int
|
|
|
|
func fakeps(proc string) string {
|
|
return g
|
|
}
|
|
|
|
func fakestat(file string) (os.FileInfo, error) {
|
|
err := e[eIndex]
|
|
eIndex++
|
|
return nil, err
|
|
}
|
|
|
|
func TestVerifyBin(t *testing.T) {
|
|
cases := []struct {
|
|
proc string
|
|
psOut string
|
|
exp bool
|
|
}{
|
|
{proc: "single", psOut: "single", exp: true},
|
|
{proc: "single", psOut: "", exp: false},
|
|
{proc: "two words", psOut: "two words", exp: true},
|
|
{proc: "two words", psOut: "", exp: false},
|
|
{proc: "cmd", psOut: "cmd param1 param2", exp: true},
|
|
{proc: "cmd param", psOut: "cmd param1 param2", exp: true},
|
|
{proc: "cmd param", psOut: "cmd", exp: false},
|
|
{proc: "cmd", psOut: "cmd x \ncmd y", exp: true},
|
|
{proc: "cmd y", psOut: "cmd x \ncmd y", exp: true},
|
|
{proc: "cmd", psOut: "/usr/bin/cmd", exp: true},
|
|
{proc: "cmd", psOut: "kube-cmd", exp: false},
|
|
{proc: "cmd", psOut: "/usr/bin/kube-cmd", exp: false},
|
|
}
|
|
|
|
psFunc = fakeps
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
g = c.psOut
|
|
v := verifyBin(c.proc)
|
|
if v != c.exp {
|
|
t.Fatalf("Expected %v got %v", c.exp, v)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestFindExecutable(t *testing.T) {
|
|
cases := []struct {
|
|
candidates []string // list of executables we'd consider
|
|
psOut string // fake output from ps
|
|
exp string // the one we expect to find in the (fake) ps output
|
|
expErr bool
|
|
}{
|
|
{candidates: []string{"one", "two", "three"}, psOut: "two", exp: "two"},
|
|
{candidates: []string{"one", "two", "three"}, psOut: "two three", exp: "two"},
|
|
{candidates: []string{"one double", "two double", "three double"}, psOut: "two double is running", exp: "two double"},
|
|
{candidates: []string{"one", "two", "three"}, psOut: "blah", expErr: true},
|
|
{candidates: []string{"one double", "two double", "three double"}, psOut: "two", expErr: true},
|
|
{candidates: []string{"apiserver", "kube-apiserver"}, psOut: "kube-apiserver", exp: "kube-apiserver"},
|
|
{candidates: []string{"apiserver", "kube-apiserver", "hyperkube-apiserver"}, psOut: "kube-apiserver", exp: "kube-apiserver"},
|
|
}
|
|
|
|
psFunc = fakeps
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
g = c.psOut
|
|
e, err := findExecutable(c.candidates)
|
|
if e != c.exp {
|
|
t.Fatalf("Expected %v got %v", c.exp, e)
|
|
}
|
|
|
|
if err == nil && c.expErr {
|
|
t.Fatalf("Expected error")
|
|
}
|
|
|
|
if err != nil && !c.expErr {
|
|
t.Fatalf("Didn't expect error: %v", err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGetBinaries(t *testing.T) {
|
|
cases := []struct {
|
|
config map[string]interface{}
|
|
psOut string
|
|
exp map[string]string
|
|
expectErr bool
|
|
}{
|
|
{
|
|
config: map[string]interface{}{"components": []string{"apiserver"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}},
|
|
psOut: "kube-apiserver",
|
|
exp: map[string]string{"apiserver": "kube-apiserver"},
|
|
expectErr: false,
|
|
},
|
|
{
|
|
// "thing" is not in the list of components
|
|
config: map[string]interface{}{"components": []string{"apiserver"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}, "thing": map[string]interface{}{"bins": []string{"something else", "thing"}}},
|
|
psOut: "kube-apiserver thing",
|
|
exp: map[string]string{"apiserver": "kube-apiserver"},
|
|
expectErr: false,
|
|
},
|
|
{
|
|
// "anotherthing" in list of components but doesn't have a defintion
|
|
config: map[string]interface{}{"components": []string{"apiserver", "anotherthing"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}, "thing": map[string]interface{}{"bins": []string{"something else", "thing"}}},
|
|
psOut: "kube-apiserver thing",
|
|
exp: map[string]string{"apiserver": "kube-apiserver"},
|
|
expectErr: false,
|
|
},
|
|
{
|
|
// more than one component
|
|
config: map[string]interface{}{"components": []string{"apiserver", "thing"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}, "thing": map[string]interface{}{"bins": []string{"something else", "thing"}}},
|
|
psOut: "kube-apiserver \nthing",
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "thing"},
|
|
expectErr: false,
|
|
},
|
|
{
|
|
// default binary to component name
|
|
config: map[string]interface{}{"components": []string{"apiserver", "thing"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}, "thing": map[string]interface{}{"bins": []string{"something else", "thing"}, "optional": true}},
|
|
psOut: "kube-apiserver \notherthing some params",
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "thing"},
|
|
expectErr: false,
|
|
},
|
|
{
|
|
// missing mandatory component
|
|
config: map[string]interface{}{"components": []string{"apiserver", "thing"}, "apiserver": map[string]interface{}{"bins": []string{"apiserver", "kube-apiserver"}}, "thing": map[string]interface{}{"bins": []string{"something else", "thing"}, "optional": true}},
|
|
psOut: "otherthing some params",
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "thing"},
|
|
expectErr: true,
|
|
},
|
|
}
|
|
|
|
v := viper.New()
|
|
psFunc = fakeps
|
|
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
g = c.psOut
|
|
for k, val := range c.config {
|
|
v.Set(k, val)
|
|
}
|
|
m, err := getBinaries(v, check.MASTER)
|
|
if c.expectErr {
|
|
if err == nil {
|
|
t.Fatal("Got nil Expected error")
|
|
}
|
|
} else if !reflect.DeepEqual(m, c.exp) {
|
|
t.Fatalf("Got %v\nExpected %v", m, c.exp)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestMultiWordReplace(t *testing.T) {
|
|
cases := []struct {
|
|
input string
|
|
sub string
|
|
subname string
|
|
output string
|
|
}{
|
|
{input: "Here's a file with no substitutions", sub: "blah", subname: "blah", output: "Here's a file with no substitutions"},
|
|
{input: "Here's a file with a substitution", sub: "blah", subname: "substitution", output: "Here's a file with a blah"},
|
|
{input: "Here's a file with multi-word substitutions", sub: "multi word", subname: "multi-word", output: "Here's a file with 'multi word' substitutions"},
|
|
{input: "Here's a file with several several substitutions several", sub: "blah", subname: "several", output: "Here's a file with blah blah substitutions blah"},
|
|
}
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
s := multiWordReplace(c.input, c.subname, c.sub)
|
|
if s != c.output {
|
|
t.Fatalf("Expected %s got %s", c.output, s)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestKubeVersionRegex(t *testing.T) {
|
|
ver := getVersionFromKubectlOutput(`Client Version: v1.8.0
|
|
Server Version: v1.8.12
|
|
`)
|
|
if ver != "1.8" {
|
|
t.Fatalf("Expected 1.8 got %s", ver)
|
|
}
|
|
|
|
ver = getVersionFromKubectlOutput("Something completely different")
|
|
if ver != defaultKubeVersion {
|
|
t.Fatalf("Expected %s got %s", defaultKubeVersion, ver)
|
|
}
|
|
}
|
|
|
|
func TestFindConfigFile(t *testing.T) {
|
|
cases := []struct {
|
|
input []string
|
|
statResults []error
|
|
exp string
|
|
}{
|
|
{input: []string{"myfile"}, statResults: []error{nil}, exp: "myfile"},
|
|
{input: []string{"thisfile", "thatfile"}, statResults: []error{os.ErrNotExist, nil}, exp: "thatfile"},
|
|
{input: []string{"thisfile", "thatfile"}, statResults: []error{os.ErrNotExist, os.ErrNotExist}, exp: ""},
|
|
}
|
|
|
|
statFunc = fakestat
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
e = c.statResults
|
|
eIndex = 0
|
|
conf := findConfigFile(c.input)
|
|
if conf != c.exp {
|
|
t.Fatalf("Got %s expected %s", conf, c.exp)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGetConfigFiles(t *testing.T) {
|
|
cases := []struct {
|
|
config map[string]interface{}
|
|
exp map[string]string
|
|
statResults []error
|
|
}{
|
|
{
|
|
config: map[string]interface{}{"components": []string{"apiserver"}, "apiserver": map[string]interface{}{"confs": []string{"apiserver", "kube-apiserver"}}},
|
|
statResults: []error{os.ErrNotExist, nil},
|
|
exp: map[string]string{"apiserver": "kube-apiserver"},
|
|
},
|
|
{
|
|
// Component "thing" isn't included in the list of components
|
|
config: map[string]interface{}{
|
|
"components": []string{"apiserver"},
|
|
"apiserver": map[string]interface{}{"confs": []string{"apiserver", "kube-apiserver"}},
|
|
"thing": map[string]interface{}{"confs": []string{"/my/file/thing"}}},
|
|
statResults: []error{os.ErrNotExist, nil},
|
|
exp: map[string]string{"apiserver": "kube-apiserver"},
|
|
},
|
|
{
|
|
// More than one component
|
|
config: map[string]interface{}{
|
|
"components": []string{"apiserver", "thing"},
|
|
"apiserver": map[string]interface{}{"confs": []string{"apiserver", "kube-apiserver"}},
|
|
"thing": map[string]interface{}{"confs": []string{"/my/file/thing"}}},
|
|
statResults: []error{os.ErrNotExist, nil, nil},
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "/my/file/thing"},
|
|
},
|
|
{
|
|
// Default thing to specified default config
|
|
config: map[string]interface{}{
|
|
"components": []string{"apiserver", "thing"},
|
|
"apiserver": map[string]interface{}{"confs": []string{"apiserver", "kube-apiserver"}},
|
|
"thing": map[string]interface{}{"confs": []string{"/my/file/thing"}, "defaultconf": "another/thing"}},
|
|
statResults: []error{os.ErrNotExist, nil, os.ErrNotExist},
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "another/thing"},
|
|
},
|
|
{
|
|
// Default thing to component name
|
|
config: map[string]interface{}{
|
|
"components": []string{"apiserver", "thing"},
|
|
"apiserver": map[string]interface{}{"confs": []string{"apiserver", "kube-apiserver"}},
|
|
"thing": map[string]interface{}{"confs": []string{"/my/file/thing"}}},
|
|
statResults: []error{os.ErrNotExist, nil, os.ErrNotExist},
|
|
exp: map[string]string{"apiserver": "kube-apiserver", "thing": "thing"},
|
|
},
|
|
}
|
|
|
|
v := viper.New()
|
|
statFunc = fakestat
|
|
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
for k, val := range c.config {
|
|
v.Set(k, val)
|
|
}
|
|
e = c.statResults
|
|
eIndex = 0
|
|
|
|
m := getFiles(v, "config")
|
|
if !reflect.DeepEqual(m, c.exp) {
|
|
t.Fatalf("Got %v\nExpected %v", m, c.exp)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGetServiceFiles(t *testing.T) {
|
|
cases := []struct {
|
|
config map[string]interface{}
|
|
exp map[string]string
|
|
statResults []error
|
|
}{
|
|
{
|
|
config: map[string]interface{}{
|
|
"components": []string{"kubelet"},
|
|
"kubelet": map[string]interface{}{"svc": []string{"kubelet", "10-kubeadm.conf"}},
|
|
},
|
|
statResults: []error{os.ErrNotExist, nil},
|
|
exp: map[string]string{"kubelet": "10-kubeadm.conf"},
|
|
},
|
|
{
|
|
// Component "thing" isn't included in the list of components
|
|
config: map[string]interface{}{
|
|
"components": []string{"kubelet"},
|
|
"kubelet": map[string]interface{}{"svc": []string{"kubelet", "10-kubeadm.conf"}},
|
|
"thing": map[string]interface{}{"svc": []string{"/my/file/thing"}},
|
|
},
|
|
statResults: []error{os.ErrNotExist, nil},
|
|
exp: map[string]string{"kubelet": "10-kubeadm.conf"},
|
|
},
|
|
{
|
|
// More than one component
|
|
config: map[string]interface{}{
|
|
"components": []string{"kubelet", "thing"},
|
|
"kubelet": map[string]interface{}{"svc": []string{"kubelet", "10-kubeadm.conf"}},
|
|
"thing": map[string]interface{}{"svc": []string{"/my/file/thing"}},
|
|
},
|
|
statResults: []error{os.ErrNotExist, nil, nil},
|
|
exp: map[string]string{"kubelet": "10-kubeadm.conf", "thing": "/my/file/thing"},
|
|
},
|
|
{
|
|
// Default thing to specified default service
|
|
config: map[string]interface{}{
|
|
"components": []string{"kubelet", "thing"},
|
|
"kubelet": map[string]interface{}{"svc": []string{"kubelet", "10-kubeadm.conf"}},
|
|
"thing": map[string]interface{}{"svc": []string{"/my/file/thing"}, "defaultsvc": "another/thing"},
|
|
},
|
|
statResults: []error{os.ErrNotExist, nil, os.ErrNotExist},
|
|
exp: map[string]string{"kubelet": "10-kubeadm.conf", "thing": "another/thing"},
|
|
},
|
|
{
|
|
// Default thing to component name
|
|
config: map[string]interface{}{
|
|
"components": []string{"kubelet", "thing"},
|
|
"kubelet": map[string]interface{}{"svc": []string{"kubelet", "10-kubeadm.conf"}},
|
|
"thing": map[string]interface{}{"svc": []string{"/my/file/thing"}},
|
|
},
|
|
statResults: []error{os.ErrNotExist, nil, os.ErrNotExist},
|
|
exp: map[string]string{"kubelet": "10-kubeadm.conf", "thing": "thing"},
|
|
},
|
|
}
|
|
|
|
v := viper.New()
|
|
statFunc = fakestat
|
|
|
|
for id, c := range cases {
|
|
t.Run(strconv.Itoa(id), func(t *testing.T) {
|
|
for k, val := range c.config {
|
|
v.Set(k, val)
|
|
}
|
|
e = c.statResults
|
|
eIndex = 0
|
|
|
|
m := getFiles(v, "service")
|
|
if !reflect.DeepEqual(m, c.exp) {
|
|
t.Fatalf("Got %v\nExpected %v", m, c.exp)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestMakeSubsitutions(t *testing.T) {
|
|
cases := []struct {
|
|
input string
|
|
subst map[string]string
|
|
exp string
|
|
}{
|
|
{input: "Replace $thisbin", subst: map[string]string{"this": "that"}, exp: "Replace that"},
|
|
{input: "Replace $thisbin", subst: map[string]string{"this": "that", "here": "there"}, exp: "Replace that"},
|
|
{input: "Replace $thisbin and $herebin", subst: map[string]string{"this": "that", "here": "there"}, exp: "Replace that and there"},
|
|
}
|
|
for _, c := range cases {
|
|
t.Run(c.input, func(t *testing.T) {
|
|
s := makeSubstitutions(c.input, "bin", c.subst)
|
|
if s != c.exp {
|
|
t.Fatalf("Got %s expected %s", s, c.exp)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestGetConfigFilePath(t *testing.T) {
|
|
var err error
|
|
cfgDir, err = ioutil.TempDir("", "kube-bench-test")
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp directory")
|
|
}
|
|
defer os.RemoveAll(cfgDir)
|
|
d := filepath.Join(cfgDir, "cis-1.4")
|
|
err = os.Mkdir(d, 0766)
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp dir")
|
|
}
|
|
err = ioutil.WriteFile(filepath.Join(d, "master.yaml"), []byte("hello world"), 0666)
|
|
if err != nil {
|
|
t.Logf("Failed to create temp file")
|
|
}
|
|
|
|
cases := []struct {
|
|
benchmarkVersion string
|
|
succeed bool
|
|
exp string
|
|
}{
|
|
{benchmarkVersion: "cis-1.4", succeed: true, exp: d},
|
|
{benchmarkVersion: "cis-1.5", succeed: false, exp: ""},
|
|
{benchmarkVersion: "1.1", succeed: false, exp: ""},
|
|
}
|
|
|
|
for _, c := range cases {
|
|
t.Run(c.benchmarkVersion, func(t *testing.T) {
|
|
path, err := getConfigFilePath(c.benchmarkVersion, "/master.yaml")
|
|
if c.succeed {
|
|
if err != nil {
|
|
t.Fatalf("Error %v", err)
|
|
}
|
|
if path != c.exp {
|
|
t.Fatalf("Got %s expected %s", path, c.exp)
|
|
}
|
|
} else {
|
|
if err == nil {
|
|
t.Fatalf("Expected Error, but none")
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestDecrementVersion(t *testing.T) {
|
|
|
|
cases := []struct {
|
|
kubeVersion string
|
|
succeed bool
|
|
exp string
|
|
}{
|
|
{kubeVersion: "1.13", succeed: true, exp: "1.12"},
|
|
{kubeVersion: "1.15", succeed: true, exp: "1.14"},
|
|
{kubeVersion: "1.11", succeed: true, exp: "1.10"},
|
|
{kubeVersion: "1.1", succeed: true, exp: ""},
|
|
{kubeVersion: "invalid", succeed: false, exp: ""},
|
|
}
|
|
for _, c := range cases {
|
|
rv := decrementVersion(c.kubeVersion)
|
|
if c.succeed {
|
|
if c.exp != rv {
|
|
t.Fatalf("decrementVersion(%q) - Got %q expected %s", c.kubeVersion, rv, c.exp)
|
|
}
|
|
} else {
|
|
if len(rv) > 0 {
|
|
t.Fatalf("decrementVersion(%q) - Expected empty string but Got %s", c.kubeVersion, rv)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestGetYamlFilesFromDir(t *testing.T) {
|
|
cfgDir, err := ioutil.TempDir("", "kube-bench-test")
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp directory")
|
|
}
|
|
defer os.RemoveAll(cfgDir)
|
|
|
|
d := filepath.Join(cfgDir, "cis-1.4")
|
|
err = os.Mkdir(d, 0766)
|
|
if err != nil {
|
|
t.Fatalf("Failed to create temp dir")
|
|
}
|
|
|
|
err = ioutil.WriteFile(filepath.Join(d, "something.yaml"), []byte("hello world"), 0666)
|
|
if err != nil {
|
|
t.Fatalf("error writing file %v", err)
|
|
}
|
|
err = ioutil.WriteFile(filepath.Join(d, "config.yaml"), []byte("hello world"), 0666)
|
|
if err != nil {
|
|
t.Fatalf("error writing file %v", err)
|
|
}
|
|
|
|
files, err := getYamlFilesFromDir(d)
|
|
if err != nil {
|
|
t.Fatalf("Unexpected error: %v", err)
|
|
}
|
|
if len(files) != 1 {
|
|
t.Fatalf("Expected to find one file, found %d", len(files))
|
|
}
|
|
|
|
if files[0] != filepath.Join(d, "something.yaml") {
|
|
t.Fatalf("Expected to find something.yaml, found %s", files[0])
|
|
}
|
|
}
|