Add sslpassthrough tests (#9457)

test/e2e/settings/ssl_passthrough.go

@@ -0,0 +1,165 @@
+/*
+Copyright 2022 The Kubernetes Authors.
+
+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 settings
+
+import (
+	"context"
+	"crypto/tls"
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/onsi/ginkgo/v2"
+	"github.com/stretchr/testify/assert"
+	appsv1 "k8s.io/api/apps/v1"
+	corev1 "k8s.io/api/core/v1"
+
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("[Flag] enable-ssl-passthrough", func() {
+	f := framework.NewDefaultFramework("ssl-passthrough")
+
+	ginkgo.BeforeEach(func() {
+		err := f.UpdateIngressControllerDeployment(func(deployment *appsv1.Deployment) error {
+			args := deployment.Spec.Template.Spec.Containers[0].Args
+			args = append(args, "--enable-ssl-passthrough")
+			deployment.Spec.Template.Spec.Containers[0].Args = args
+			_, err := f.KubeClientSet.AppsV1().Deployments(f.Namespace).Update(context.TODO(), deployment, metav1.UpdateOptions{})
+			return err
+		})
+		assert.Nil(ginkgo.GinkgoT(), err, "updating ingress controller deployment flags")
+
+		f.WaitForNginxServer("_",
+			func(server string) bool {
+				return strings.Contains(server, "listen 442")
+			})
+	})
+
+	ginkgo.Describe("With enable-ssl-passthrough enabled", func() {
+		ginkgo.It("should enable ssl-passthrough-proxy-port on a different port", func() {
+
+			err := f.UpdateIngressControllerDeployment(func(deployment *appsv1.Deployment) error {
+				args := deployment.Spec.Template.Spec.Containers[0].Args
+				args = append(args, "--ssl-passthrough-proxy-port=1442")
+				deployment.Spec.Template.Spec.Containers[0].Args = args
+				_, err := f.KubeClientSet.AppsV1().Deployments(f.Namespace).Update(context.TODO(), deployment, metav1.UpdateOptions{})
+				return err
+			})
+			assert.Nil(ginkgo.GinkgoT(), err, "updating ingress controller deployment flags")
+
+			f.WaitForNginxServer("_",
+				func(server string) bool {
+					return strings.Contains(server, "listen 1442")
+				})
+
+			f.HTTPTestClient().
+				GET("/").
+				WithHeader("Host", "something").
+				Expect().
+				Status(http.StatusNotFound)
+		})
+
+		ginkgo.It("should pass unknown traffic to default backend and handle known traffic", func() {
+
+			host := "testpassthrough.com"
+			echoName := "echopass"
+
+			/* Even with enable-ssl-passthrough enabled, only annotated ingresses may receive the trafic */
+			annotations := map[string]string{
+				"nginx.ingress.kubernetes.io/ssl-passthrough": "true",
+			}
+
+			ingressDef := framework.NewSingleIngressWithTLS(host, "/", host, []string{host}, f.Namespace, echoName, 80, annotations)
+			tlsConfig, err := framework.CreateIngressTLSSecret(f.KubeClientSet,
+				ingressDef.Spec.TLS[0].Hosts,
+				ingressDef.Spec.TLS[0].SecretName,
+				ingressDef.Namespace)
+
+			volumeMount := []corev1.VolumeMount{
+				{
+					Name:      "certs",
+					ReadOnly:  true,
+					MountPath: "/certs",
+				},
+			}
+			volume := []corev1.Volume{
+				{
+					Name: "certs",
+					VolumeSource: corev1.VolumeSource{
+						Secret: &corev1.SecretVolumeSource{
+							SecretName: ingressDef.Spec.TLS[0].SecretName,
+						},
+					},
+				},
+			}
+			envs := []corev1.EnvVar{
+				{
+					Name:  "HTTPBUN_SSL_CERT",
+					Value: "/certs/tls.crt",
+				},
+				{
+					Name:  "HTTPBUN_SSL_KEY",
+					Value: "/certs/tls.key",
+				},
+			}
+			f.NewDeploymentWithOpts("echopass", "ghcr.io/sharat87/httpbun:latest", 80, 1, nil, nil, envs, volumeMount, volume, false)
+
+			f.EnsureIngress(ingressDef)
+
+			assert.Nil(ginkgo.GinkgoT(), err)
+			framework.WaitForTLS(f.GetURL(framework.HTTPS), tlsConfig)
+
+			f.WaitForNginxServer(host,
+				func(server string) bool {
+					return strings.Contains(server, "listen 442")
+				})
+
+			/* This one should not receive traffic as it does not contain passthrough annotation */
+			hostBad := "noannotationnopassthrough.com"
+			ingBad := f.EnsureIngress(framework.NewSingleIngressWithTLS(hostBad, "/", hostBad, []string{hostBad}, f.Namespace, echoName, 80, nil))
+			tlsConfigBad, err := framework.CreateIngressTLSSecret(f.KubeClientSet,
+				ingBad.Spec.TLS[0].Hosts,
+				ingBad.Spec.TLS[0].SecretName,
+				ingBad.Namespace)
+			assert.Nil(ginkgo.GinkgoT(), err)
+			framework.WaitForTLS(f.GetURL(framework.HTTPS), tlsConfigBad)
+
+			f.WaitForNginxServer(hostBad,
+				func(server string) bool {
+					return strings.Contains(server, "listen 442")
+				})
+
+			f.HTTPTestClientWithTLSConfig(&tls.Config{ServerName: host, InsecureSkipVerify: true}).
+				GET("/").
+				WithURL(fmt.Sprintf("https://%s:443", host)).
+				ForceResolve(f.GetNginxIP(), 443).
+				Expect().
+				Status(http.StatusOK)
+
+			f.HTTPTestClientWithTLSConfig(&tls.Config{ServerName: hostBad, InsecureSkipVerify: true}).
+				GET("/").
+				WithURL(fmt.Sprintf("https://%s:443", hostBad)).
+				ForceResolve(f.GetNginxIP(), 443).
+				Expect().
+				Status(http.StatusNotFound)
+
+		})
+	})
+})