From fa626a605f575be516f2112f6d838bdda46f21e6 Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Tue, 12 Jun 2018 21:33:53 +0200
Subject: [PATCH] Add use-forwarded-headers e2e test.

---
 test/e2e/settings/forwarded_headers.go | 123 +++++++++++++++++++++++++
 1 file changed, 123 insertions(+)
 create mode 100644 test/e2e/settings/forwarded_headers.go

diff --git a/test/e2e/settings/forwarded_headers.go b/test/e2e/settings/forwarded_headers.go
new file mode 100644
index 000000000..c8eee1b5e
--- /dev/null
+++ b/test/e2e/settings/forwarded_headers.go
@@ -0,0 +1,123 @@
+/*
+Copyright 2017 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 (
+	"fmt"
+	"io/ioutil"
+	"net"
+	"strings"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+
+	"k8s.io/ingress-nginx/test/e2e/framework"
+)
+
+var _ = framework.IngressNginxDescribe("X-Forwarded headers", func() {
+	f := framework.NewDefaultFramework("forwarded-headers")
+
+	setting := "use-forwarded-headers"
+
+	BeforeEach(func() {
+		err := f.NewEchoDeployment()
+		Expect(err).NotTo(HaveOccurred())
+
+		err = f.UpdateNginxConfigMapData(setting, "false")
+		Expect(err).NotTo(HaveOccurred())
+	})
+
+	AfterEach(func() {
+	})
+
+	It("should trust X-Forwarded headers when setting is true", func() {
+		host := "forwarded-headers"
+
+		err := f.UpdateNginxConfigMapData(setting, "true")
+		Expect(err).NotTo(HaveOccurred())
+
+		ing, err := f.EnsureIngress(framework.NewSingleIngress(host, "/", host, f.IngressController.Namespace, "http-svc", 80, nil))
+		Expect(err).NotTo(HaveOccurred())
+		Expect(ing).NotTo(BeNil())
+
+		err = f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "server_name forwarded-headers")
+			})
+		Expect(err).NotTo(HaveOccurred())
+
+		ip, err := f.GetNginxIP()
+		Expect(err).NotTo(HaveOccurred())
+		port, err := f.GetNginxPort("http")
+		Expect(err).NotTo(HaveOccurred())
+
+		conn, err := net.Dial("tcp", fmt.Sprintf("%v:%v", ip, port))
+		Expect(err).NotTo(HaveOccurred())
+		defer conn.Close()
+
+		conn.Write([]byte("GET / HTTP/1.1\r\nHost: forwarded-headers\r\nX-Forwarded-Port: 1234\r\nX-Forwarded-Proto: myproto\r\nX-Forwarded-For: 1.2.3.4\r\nX-Forwarded-Host: myhost\r\n\r\n"))
+
+		data, err := ioutil.ReadAll(conn)
+		Expect(err).NotTo(HaveOccurred())
+		body := string(data)
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("host=myhost")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-host=myhost")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-proto=myproto")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-port=1234")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-for=1.2.3.4")))
+	})
+	It("should not trust X-Forwarded headers when setting is false", func() {
+		host := "forwarded-headers"
+
+		err := f.UpdateNginxConfigMapData(setting, "false")
+		Expect(err).NotTo(HaveOccurred())
+
+		ing, err := f.EnsureIngress(framework.NewSingleIngress(host, "/", host, f.IngressController.Namespace, "http-svc", 80, nil))
+		Expect(err).NotTo(HaveOccurred())
+		Expect(ing).NotTo(BeNil())
+
+		err = f.WaitForNginxServer(host,
+			func(server string) bool {
+				return strings.Contains(server, "server_name forwarded-headers")
+			})
+		Expect(err).NotTo(HaveOccurred())
+
+		ip, err := f.GetNginxIP()
+		Expect(err).NotTo(HaveOccurred())
+		port, err := f.GetNginxPort("http")
+		Expect(err).NotTo(HaveOccurred())
+
+		conn, err := net.Dial("tcp", fmt.Sprintf("%v:%v", ip, port))
+		Expect(err).NotTo(HaveOccurred())
+		defer conn.Close()
+
+		conn.Write([]byte("GET / HTTP/1.1\r\nHost: forwarded-headers\r\nX-Forwarded-Port: 1234\r\nX-Forwarded-Proto: myproto\r\nX-Forwarded-For: 1.2.3.4\r\nX-Forwarded-Host: myhost\r\n\r\n"))
+
+		data, err := ioutil.ReadAll(conn)
+		Expect(err).NotTo(HaveOccurred())
+		body := string(data)
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("host=forwarded-headers")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-port=80")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-forwarded-proto=http")))
+		Expect(body).Should(ContainSubstring(fmt.Sprintf("x-original-forwarded-for=1.2.3.4")))
+		Expect(body).ShouldNot(ContainSubstring(fmt.Sprintf("host=myhost")))
+		Expect(body).ShouldNot(ContainSubstring(fmt.Sprintf("x-forwarded-host=myhost")))
+		Expect(body).ShouldNot(ContainSubstring(fmt.Sprintf("x-forwarded-proto=myproto")))
+		Expect(body).ShouldNot(ContainSubstring(fmt.Sprintf("x-forwarded-port=1234")))
+		Expect(body).ShouldNot(ContainSubstring(fmt.Sprintf("x-forwarded-for=1.2.3.4")))
+	})
+})