mirror of
https://github.com/kyverno/kyverno.git
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550 lines
12 KiB
Go
550 lines
12 KiB
Go
package engine
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import (
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"encoding/json"
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"reflect"
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"testing"
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kyverno "github.com/kyverno/kyverno/pkg/api/kyverno/v1"
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"github.com/kyverno/kyverno/pkg/engine/context"
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"github.com/kyverno/kyverno/pkg/engine/utils"
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"github.com/kyverno/kyverno/pkg/kyverno/store"
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"gotest.tools/assert"
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"k8s.io/apimachinery/pkg/apis/meta/v1/unstructured"
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)
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func Test_VariableSubstitutionOverlay(t *testing.T) {
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policyRaw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "add-label"
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},
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"spec": {
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"rules": [
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{
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"name": "add-name-label",
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"mutate": {
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"overlay": {
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"metadata": {
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"labels": {
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"appname": "{{request.object.metadata.name}}"
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}
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}
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}
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}
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}
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]
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}
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}`)
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"name": "check-root-user"
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},
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"spec": {
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"containers": [
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{
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"name": "check-root-user",
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"image": "nginxinc/nginx-unprivileged",
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"securityContext": {
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"runAsNonRoot": true
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}
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}
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]
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}
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}`)
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expectedPatch := []byte(`{"op":"add","path":"/metadata/labels","value":{"appname":"check-root-user"}}`)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyRaw, &policy)
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if err != nil {
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t.Error(err)
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}
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resourceUnstructured, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResource(resourceRaw)
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if err != nil {
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t.Error(err)
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}
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value, err := ctx.Query("request.object.metadata.name")
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t.Log(value)
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if err != nil {
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t.Error(err)
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}
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resourceUnstructured}
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er := Mutate(policyContext)
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t.Log(string(expectedPatch))
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t.Log(string(er.PolicyResponse.Rules[0].Patches[0]))
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if !reflect.DeepEqual(expectedPatch, er.PolicyResponse.Rules[0].Patches[0]) {
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t.Error("patches dont match")
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}
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}
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func Test_variableSubstitutionPathNotExist(t *testing.T) {
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"name": "check-root-user"
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},
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"spec": {
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"containers": [
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{
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"name": "check-root-user",
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"image": "nginxinc/nginx-unprivileged",
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"securityContext": {
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"runAsNonRoot": true
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}
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}
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]
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}
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}`)
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policyRaw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "substitute-variable"
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},
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"spec": {
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"rules": [
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{
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"name": "test-path-not-exist",
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"mutate": {
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"overlay": {
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"spec": {
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"name": "{{request.object.metadata.name1}}"
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}
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}
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}
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}
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]
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}
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}`)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyRaw, &policy)
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assert.NilError(t, err)
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resourceUnstructured, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResource(resourceRaw)
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assert.NilError(t, err)
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resourceUnstructured}
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er := Mutate(policyContext)
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expectedErrorStr := "variable substitution failed: Unknown key \"name1\" in path"
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assert.Equal(t, er.PolicyResponse.Rules[0].Message, expectedErrorStr)
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}
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func Test_variableSubstitutionCLI(t *testing.T) {
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"name": "nginx-config-test"
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},
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"spec": {
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"containers": [
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{
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"image": "nginx:latest",
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"name": "test-nginx"
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}
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]
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}
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}`)
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policyRaw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "cm-variable-example"
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},
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"spec": {
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"rules": [
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{
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"name": "example-configmap-lookup",
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"context": [
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{
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"name": "dictionary",
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"configMap": {
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"name": "mycmap",
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"namespace": "default"
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}
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}
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],
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"mutate": {
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"patchStrategicMerge": {
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"metadata": {
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"labels": {
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"my-environment-name": "{{dictionary.data.env}}"
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}
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}
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}
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}
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}
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]
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}
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}`)
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configMapVariableContext := store.Context{
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Policies: []store.Policy{
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{
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Name: "cm-variable-example",
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Rules: []store.Rule{
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{
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Name: "example-configmap-lookup",
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Values: map[string]string{
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"dictionary.data.env": "dev1",
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},
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},
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},
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},
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},
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}
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expectedPatch := []byte(`{"op":"add","path":"/metadata/labels","value":{"my-environment-name":"dev1"}}`)
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store.SetContext(configMapVariableContext)
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store.SetMock(true)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyRaw, &policy)
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assert.NilError(t, err)
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resourceUnstructured, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResource(resourceRaw)
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assert.NilError(t, err)
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resourceUnstructured,
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}
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er := Mutate(policyContext)
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t.Log(string(expectedPatch))
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t.Log(string(er.PolicyResponse.Rules[0].Patches[0]))
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if !reflect.DeepEqual(expectedPatch, er.PolicyResponse.Rules[0].Patches[0]) {
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t.Error("patches don't match")
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}
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}
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// https://github.com/kyverno/kyverno/issues/2022
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func Test_chained_rules(t *testing.T) {
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policyRaw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "replace-image-registry",
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"annotations": {
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"policies.kyverno.io/minversion": "1.4.2"
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}
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},
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"spec": {
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"background": false,
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"rules": [
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{
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"name": "replace-image-registry",
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"mutate": {
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"patchStrategicMerge": {
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"spec": {
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"containers": [
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{
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"(name)": "*",
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"image": "{{regex_replace_all('^[^/]+','{{@}}','myregistry.corp.com')}}"
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}
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]
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}
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}
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}
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},
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{
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"name": "replace-image-registry-chained",
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"mutate": {
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"patchStrategicMerge": {
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"spec": {
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"containers": [
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{
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"(name)": "*",
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"image": "{{regex_replace_all('\\b(myregistry.corp.com)\\b','{{@}}','otherregistry.corp.com')}}"
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}
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]
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}
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}
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}
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}
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]
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}
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}`)
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"name": "test"
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},
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"spec": {
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"containers": [
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{
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"name": "test",
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"image": "foo/bash:5.0"
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}
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]
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}
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}`)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyRaw, &policy)
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assert.NilError(t, err)
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resource, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResourceAsObject(resource.Object)
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assert.NilError(t, err)
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resource,
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}
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err = ctx.AddImageInfo(resource)
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assert.NilError(t, err)
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err = context.MutateResourceWithImageInfo(resourceRaw, ctx)
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assert.NilError(t, err)
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er := Mutate(policyContext)
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containers, _, err := unstructured.NestedSlice(er.PatchedResource.Object, "spec", "containers")
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assert.NilError(t, err)
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assert.Equal(t, containers[0].(map[string]interface{})["image"], "otherregistry.corp.com/foo/bash:5.0")
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assert.Equal(t, string(er.PolicyResponse.Rules[0].Patches[0]), `{"op":"replace","path":"/spec/containers/0/image","value":"myregistry.corp.com/foo/bash:5.0"}`)
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assert.Equal(t, string(er.PolicyResponse.Rules[1].Patches[0]), `{"op":"replace","path":"/spec/containers/0/image","value":"otherregistry.corp.com/foo/bash:5.0"}`)
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}
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func Test_precondition(t *testing.T) {
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Pod",
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"metadata": {
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"name": "nginx-config-test",
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"labels": {
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"app.kubernetes.io/managed-by": "Helm"
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}
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},
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"spec": {
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"containers": [
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{
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"image": "nginx:latest",
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"name": "test-nginx"
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}
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]
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}
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}`)
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policyRaw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "cm-variable-example"
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},
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"spec": {
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"rules": [
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{
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"name": "example-configmap-lookup",
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"match": {
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"resources": {
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"kinds": [
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"Pod"
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]
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}
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},
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"preconditions": [
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{
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"key": "{{ request.object.metadata.labels.\"app.kubernetes.io/managed-by\"}}",
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"operator": "Equals",
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"value": "Helm"
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}
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],
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"mutate": {
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"patchStrategicMerge": {
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"metadata": {
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"labels": {
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"my-added-label": "test"
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}
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}
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}
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}
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}
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]
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}
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}`)
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expectedPatch := []byte(`{"op":"add","path":"/metadata/labels/my-added-label","value":"test"}`)
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store.SetMock(true)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyRaw, &policy)
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assert.NilError(t, err)
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resourceUnstructured, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResource(resourceRaw)
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assert.NilError(t, err)
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resourceUnstructured,
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}
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er := Mutate(policyContext)
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t.Log(string(expectedPatch))
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t.Log(string(er.PolicyResponse.Rules[0].Patches[0]))
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if !reflect.DeepEqual(expectedPatch, er.PolicyResponse.Rules[0].Patches[0]) {
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t.Error("patches don't match")
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}
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}
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func Test_nonZeroIndexNumberPatchesJson6902(t *testing.T) {
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resourceRaw := []byte(`{
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"apiVersion": "v1",
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"kind": "Endpoints",
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"metadata": {
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"name": "my-service"
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},
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"subsets": [
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{
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"addresses": [
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{
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"ip": "127.0.0.1"
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}
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]
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}
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]
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}`)
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policyraw := []byte(`{
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"apiVersion": "kyverno.io/v1",
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"kind": "ClusterPolicy",
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"metadata": {
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"name": "policy-endpoints"
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},
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"spec": {
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"rules": [
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{
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"name": "Add IP to subset",
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"match": {
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"resources": {
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"kinds": [
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"Endpoints"
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]
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}
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},
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"preconditions": [
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{
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"key": "{{ request.object.subsets[] | length(@) }}",
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"operator": "Equals",
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"value": "1"
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}
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],
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"mutate": {
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"patchesJson6902": "- path: \"/subsets/0/addresses/-\"\n op: add\n value: {\"ip\":\"192.168.42.172\"}"
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}
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},
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{
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"name": "Add IP to subsets",
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"match": {
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"resources": {
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"kinds": [
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"Endpoints"
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]
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}
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},
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"preconditions": [
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{
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"key": "{{ request.object.subsets[] | length(@) }}",
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"operator": "Equals",
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"value": "2"
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}
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],
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"mutate": {
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"patchesJson6902": "- path: \"/subsets/0/addresses/-\"\n op: add\n value: {\"ip\":\"192.168.42.172\"}\n- path: \"/subsets/1/addresses/-\"\n op: add\n value: {\"ip\":\"192.168.42.173\"}"
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}
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}
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]
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}
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}`)
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expectedPatch := []byte(`{"op":"add","path":"/subsets/0/addresses/1","value":{"ip":"192.168.42.172"}}`)
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store.SetMock(true)
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var policy kyverno.ClusterPolicy
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err := json.Unmarshal(policyraw, &policy)
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assert.NilError(t, err)
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resourceUnstructured, err := utils.ConvertToUnstructured(resourceRaw)
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assert.NilError(t, err)
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ctx := context.NewContext()
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err = ctx.AddResource(resourceRaw)
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assert.NilError(t, err)
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policyContext := &PolicyContext{
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Policy: policy,
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JSONContext: ctx,
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NewResource: *resourceUnstructured,
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}
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er := Mutate(policyContext)
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t.Log(string(expectedPatch))
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t.Log(string(er.PolicyResponse.Rules[0].Patches[0]))
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if !reflect.DeepEqual(expectedPatch, er.PolicyResponse.Rules[0].Patches[0]) {
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t.Error("patches don't match")
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}
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}
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