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https://github.com/aquasecurity/kube-bench.git
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Functions and tests for finding binaries and config files
This commit is contained in:
parent
7600dd9dd6
commit
f5cef922cc
47
cmd/util.go
47
cmd/util.go
@ -10,6 +10,7 @@ import (
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"github.com/aquasecurity/kube-bench/check"
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"github.com/fatih/color"
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"github.com/golang/glog"
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"github.com/spf13/viper"
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)
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var (
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@ -83,6 +84,37 @@ func ps(proc string) string {
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return string(out)
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}
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// getBinaries finds which of the set of candidate executables are running
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func getBinaries(v *viper.Viper) map[string]string {
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binmap := make(map[string]string)
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for _, exeType := range v.AllKeys() {
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bin, err := findExecutable(v.GetStringSlice(exeType))
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if err != nil {
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exitWithError(fmt.Errorf("looking for %s executable but none of the candidates are running", exeType))
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}
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binmap[exeType] = bin
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}
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return binmap
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}
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// getConfigFiles finds which of the set of candidate config files exist
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func getConfigFiles(v *viper.Viper) map[string]string {
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confmap := make(map[string]string)
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for _, confType := range v.AllKeys() {
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conf := findConfigFile(v.GetStringSlice(confType))
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if conf == "" {
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printlnWarn(fmt.Sprintf("Missing kubernetes config file for %s", confType))
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} else {
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confmap[confType] = conf
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}
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}
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return confmap
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}
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// verifyBin checks that the binary specified is running
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func verifyBin(bin string) bool {
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@ -110,6 +142,21 @@ func verifyBin(bin string) bool {
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return false
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}
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// fundConfigFile looks through a list of possible config files and finds the first one that exists
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func findConfigFile(candidates []string) string {
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for _, c := range candidates {
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_, err := statFunc(c)
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if err == nil {
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return c
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}
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if !os.IsNotExist(err) {
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exitWithError(fmt.Errorf("error looking for file %s: %v", c, err))
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}
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}
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return ""
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}
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// findExecutable looks through a list of possible executable names and finds the first one that's running
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func findExecutable(candidates []string) (string, error) {
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for _, c := range candidates {
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109
cmd/util_test.go
109
cmd/util_test.go
@ -15,9 +15,13 @@
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package cmd
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import (
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"os"
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"reflect"
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"regexp"
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"strconv"
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"testing"
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"github.com/spf13/viper"
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)
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func TestCheckVersion(t *testing.T) {
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@ -78,10 +82,19 @@ func TestVersionMatch(t *testing.T) {
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}
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var g string
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var e []error
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var eIndex int
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func fakeps(proc string) string {
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return g
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}
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func fakestat(file string) (os.FileInfo, error) {
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err := e[eIndex]
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eIndex++
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return nil, err
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}
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func TestVerifyBin(t *testing.T) {
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cases := []struct {
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proc string
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@ -145,6 +158,41 @@ func TestFindExecutable(t *testing.T) {
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}
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}
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func TestGetBinaries(t *testing.T) {
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cases := []struct {
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config map[string]interface{}
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psOut string
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exp map[string]string
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}{
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{
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config: map[string]interface{}{"apiserver": []string{"apiserver", "kube-apiserver"}},
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psOut: "kube-apiserver",
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exp: map[string]string{"apiserver": "kube-apiserver"},
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},
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{
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config: map[string]interface{}{"apiserver": []string{"apiserver", "kube-apiserver"}, "thing": []string{"something else", "thing"}},
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psOut: "kube-apiserver thing",
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exp: map[string]string{"apiserver": "kube-apiserver", "thing": "thing"},
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},
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}
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v := viper.New()
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psFunc = fakeps
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for id, c := range cases {
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t.Run(strconv.Itoa(id), func(t *testing.T) {
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g = c.psOut
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for k, val := range c.config {
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v.Set(k, val)
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}
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m := getBinaries(v)
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if !reflect.DeepEqual(m, c.exp) {
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t.Fatalf("Got %v\nExpected %v", m, c.exp)
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}
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})
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}
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}
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func TestMultiWordReplace(t *testing.T) {
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cases := []struct {
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input string
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@ -166,3 +214,64 @@ func TestMultiWordReplace(t *testing.T) {
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})
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}
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}
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func TestFindConfigFile(t *testing.T) {
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cases := []struct {
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input []string
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statResults []error
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exp string
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}{
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{input: []string{"myfile"}, statResults: []error{nil}, exp: "myfile"},
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{input: []string{"thisfile", "thatfile"}, statResults: []error{os.ErrNotExist, nil}, exp: "thatfile"},
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{input: []string{"thisfile", "thatfile"}, statResults: []error{os.ErrNotExist, os.ErrNotExist}, exp: ""},
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}
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statFunc = fakestat
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for id, c := range cases {
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t.Run(strconv.Itoa(id), func(t *testing.T) {
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e = c.statResults
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eIndex = 0
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conf := findConfigFile(c.input)
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if conf != c.exp {
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t.Fatalf("Got %s expected %s", conf, c.exp)
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}
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})
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}
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}
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func TestGetConfigFiles(t *testing.T) {
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cases := []struct {
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config map[string]interface{}
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exp map[string]string
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statResults []error
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}{
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{
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config: map[string]interface{}{"apiserver": []string{"apiserver", "kube-apiserver"}},
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statResults: []error{os.ErrNotExist, nil},
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exp: map[string]string{"apiserver": "kube-apiserver"},
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},
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{
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config: map[string]interface{}{"apiserver": []string{"apiserver", "kube-apiserver"}, "thing": []string{"/my/file/thing"}},
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statResults: []error{os.ErrNotExist, nil, nil},
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exp: map[string]string{"apiserver": "kube-apiserver", "thing": "/my/file/thing"},
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},
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}
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v := viper.New()
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statFunc = fakestat
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for id, c := range cases {
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t.Run(strconv.Itoa(id), func(t *testing.T) {
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for k, val := range c.config {
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v.Set(k, val)
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}
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e = c.statResults
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eIndex = 0
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m := getConfigFiles(v)
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if !reflect.DeepEqual(m, c.exp) {
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t.Fatalf("Got %v\nExpected %v", m, c.exp)
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}
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})
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}
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}
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