300 lines
8.5 KiB
Go
300 lines
8.5 KiB
Go
package forwardedheaders
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import (
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"crypto/tls"
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"net/http"
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"testing"
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"github.com/stretchr/testify/assert"
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"github.com/stretchr/testify/require"
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)
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func TestServeHTTP(t *testing.T) {
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testCases := []struct {
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desc string
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insecure bool
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trustedIps []string
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incomingHeaders map[string]string
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remoteAddr string
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expectedHeaders map[string]string
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tls bool
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websocket bool
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host string
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}{
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{
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desc: "all Empty",
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insecure: true,
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trustedIps: nil,
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remoteAddr: "",
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incomingHeaders: map[string]string{},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "",
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"X-Forwarded-Uri": "",
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"X-Forwarded-Method": "",
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"X-Forwarded-Tls-Client-Cert": "",
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"X-Forwarded-Tls-Client-Cert-Info": "",
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},
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},
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{
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desc: "insecure true with incoming X-Forwarded headers",
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insecure: true,
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trustedIps: nil,
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remoteAddr: "",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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},
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{
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desc: "insecure false with incoming X-Forwarded headers",
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insecure: false,
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trustedIps: nil,
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remoteAddr: "",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "",
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"X-Forwarded-Uri": "",
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"X-Forwarded-Method": "",
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"X-Forwarded-Tls-Client-Cert": "",
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"X-Forwarded-Tls-Client-Cert-Info": "",
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},
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},
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{
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desc: "insecure false with incoming X-Forwarded headers and valid Trusted Ips",
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insecure: false,
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trustedIps: []string{"10.0.1.100"},
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remoteAddr: "10.0.1.100:80",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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},
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{
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desc: "insecure false with incoming X-Forwarded headers and invalid Trusted Ips",
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insecure: false,
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trustedIps: []string{"10.0.1.100"},
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remoteAddr: "10.0.1.101:80",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "",
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"X-Forwarded-Uri": "",
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"X-Forwarded-Method": "",
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"X-Forwarded-Tls-Client-Cert": "",
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"X-Forwarded-Tls-Client-Cert-Info": "",
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},
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},
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{
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desc: "insecure false with incoming X-Forwarded headers and valid Trusted Ips CIDR",
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insecure: false,
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trustedIps: []string{"1.2.3.4/24"},
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remoteAddr: "1.2.3.156:80",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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},
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{
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desc: "insecure false with incoming X-Forwarded headers and invalid Trusted Ips CIDR",
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insecure: false,
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trustedIps: []string{"1.2.3.4/24"},
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remoteAddr: "10.0.1.101:80",
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incomingHeaders: map[string]string{
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"X-Forwarded-for": "10.0.1.0, 10.0.1.12",
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"X-Forwarded-Uri": "/bar",
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"X-Forwarded-Method": "GET",
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"X-Forwarded-Tls-Client-Cert": "Cert",
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"X-Forwarded-Tls-Client-Cert-Info": "CertInfo",
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},
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expectedHeaders: map[string]string{
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"X-Forwarded-for": "",
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"X-Forwarded-Uri": "",
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"X-Forwarded-Method": "",
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"X-Forwarded-Tls-Client-Cert": "",
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"X-Forwarded-Tls-Client-Cert-Info": "",
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},
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},
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{
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desc: "xRealIP populated from remote address",
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remoteAddr: "10.0.1.101:80",
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expectedHeaders: map[string]string{
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xRealIP: "10.0.1.101",
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},
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},
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{
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desc: "xRealIP was already populated from previous headers",
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insecure: true,
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remoteAddr: "10.0.1.101:80",
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incomingHeaders: map[string]string{
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xRealIP: "10.0.1.12",
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},
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expectedHeaders: map[string]string{
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xRealIP: "10.0.1.12",
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},
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},
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{
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desc: "xForwardedProto with no tls",
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tls: false,
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expectedHeaders: map[string]string{
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xForwardedProto: "http",
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},
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},
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{
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desc: "xForwardedProto with tls",
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tls: true,
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expectedHeaders: map[string]string{
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xForwardedProto: "https",
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},
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},
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{
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desc: "xForwardedProto with websocket",
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tls: false,
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websocket: true,
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expectedHeaders: map[string]string{
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xForwardedProto: "ws",
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},
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},
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{
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desc: "xForwardedProto with websocket and tls",
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tls: true,
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websocket: true,
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expectedHeaders: map[string]string{
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xForwardedProto: "wss",
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},
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},
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{
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desc: "xForwardedProto with websocket and tls and already x-forwarded-proto with wss",
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tls: true,
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websocket: true,
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incomingHeaders: map[string]string{
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xForwardedProto: "wss",
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},
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expectedHeaders: map[string]string{
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xForwardedProto: "wss",
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},
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},
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{
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desc: "xForwardedPort with explicit port",
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host: "foo.com:8080",
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expectedHeaders: map[string]string{
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xForwardedPort: "8080",
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},
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},
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{
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desc: "xForwardedPort with implicit tls port from proto header",
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// setting insecure just so our initial xForwardedProto does not get cleaned
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insecure: true,
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incomingHeaders: map[string]string{
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xForwardedProto: "https",
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},
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expectedHeaders: map[string]string{
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xForwardedProto: "https",
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xForwardedPort: "443",
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},
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},
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{
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desc: "xForwardedPort with implicit tls port from TLS in req",
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tls: true,
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expectedHeaders: map[string]string{
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xForwardedPort: "443",
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},
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},
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{
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desc: "xForwardedHost from req host",
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host: "foo.com:8080",
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expectedHeaders: map[string]string{
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xForwardedHost: "foo.com:8080",
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},
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}, {
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desc: "xForwardedServer from req XForwarded",
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host: "foo.com:8080",
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expectedHeaders: map[string]string{
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xForwardedServer: "foo.com:8080",
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},
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},
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}
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for _, test := range testCases {
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test := test
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t.Run(test.desc, func(t *testing.T) {
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t.Parallel()
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req, err := http.NewRequest(http.MethodGet, "", nil)
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require.NoError(t, err)
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req.RemoteAddr = test.remoteAddr
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if test.tls {
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req.TLS = &tls.ConnectionState{}
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}
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if test.websocket {
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req.Header.Set(connection, "upgrade")
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req.Header.Set(upgrade, "websocket")
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}
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if test.host != "" {
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req.Host = test.host
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}
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for k, v := range test.incomingHeaders {
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req.Header.Set(k, v)
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}
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m, err := NewXForwarded(test.insecure, test.trustedIps,
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http.HandlerFunc(func(_ http.ResponseWriter, _ *http.Request) {}))
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require.NoError(t, err)
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if test.host != "" {
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m.hostname = test.host
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}
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m.ServeHTTP(nil, req)
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for k, v := range test.expectedHeaders {
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assert.Equal(t, v, req.Header.Get(k))
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}
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})
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}
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}
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