cloudflared-mirror/ingress/origin_proxy_test.go

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package ingress
import (
"context"
"fmt"
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"io"
"net"
"net/http"
"net/http/httptest"
"net/url"
"testing"
"github.com/stretchr/testify/assert"
"github.com/stretchr/testify/require"
"github.com/cloudflare/cloudflared/carrier"
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"github.com/cloudflare/cloudflared/config"
"github.com/cloudflare/cloudflared/websocket"
)
func TestRawTCPServiceEstablishConnection(t *testing.T) {
originListener, err := net.Listen("tcp", "127.0.0.1:0")
require.NoError(t, err)
listenerClosed := make(chan struct{})
tcpListenRoutine(originListener, listenerClosed)
rawTCPService := &rawTCPService{name: ServiceWarpRouting}
req, err := http.NewRequest(http.MethodGet, fmt.Sprintf("http://%s", originListener.Addr()), nil)
require.NoError(t, err)
originListener.Close()
<-listenerClosed
req, err = http.NewRequest(http.MethodGet, fmt.Sprintf("http://%s", originListener.Addr()), nil)
require.NoError(t, err)
// Origin not listening for new connection, should return an error
_, err = rawTCPService.EstablishConnection(context.Background(), req.URL.String(), TestLogger)
require.Error(t, err)
}
func TestTCPOverWSServiceEstablishConnection(t *testing.T) {
originListener, err := net.Listen("tcp", "127.0.0.1:0")
require.NoError(t, err)
listenerClosed := make(chan struct{})
tcpListenRoutine(originListener, listenerClosed)
originURL := &url.URL{
Scheme: "tcp",
Host: originListener.Addr().String(),
}
baseReq, err := http.NewRequest(http.MethodGet, "https://place-holder", nil)
require.NoError(t, err)
baseReq.Header.Set("Sec-Websocket-Key", "dGhlIHNhbXBsZSBub25jZQ==")
bastionReq := baseReq.Clone(context.Background())
carrier.SetBastionDest(bastionReq.Header, originListener.Addr().String())
tests := []struct {
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testCase string
service *tcpOverWSService
req *http.Request
bastionMode bool
expectErr bool
}{
{
testCase: "specific TCP service",
service: newTCPOverWSService(originURL),
req: baseReq,
},
{
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testCase: "bastion service",
service: newBastionService(),
bastionMode: true,
req: bastionReq,
},
{
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testCase: "invalid bastion request",
service: newBastionService(),
bastionMode: true,
req: baseReq,
expectErr: true,
},
{
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testCase: "bastion service",
service: newBastionServiceWithDest(MustParseURL(t, "https://place-holder1")),
req: bastionReq,
bastionMode: true,
},
{
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testCase: "bastion service",
service: newBastionServiceWithDest(MustParseURL(t, "https://place-holder1")),
req: baseReq,
bastionMode: true,
expectErr: true,
},
}
for _, test := range tests {
t.Run(test.testCase, func(t *testing.T) {
if test.expectErr {
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bastionHost, _ := carrier.ResolveBastionDest(test.req, test.bastionMode, config.BastionFlag)
_, err := test.service.EstablishConnection(context.Background(), bastionHost, TestLogger)
assert.Error(t, err)
}
})
}
originListener.Close()
<-listenerClosed
for _, service := range []*tcpOverWSService{newTCPOverWSService(originURL), newBastionService()} {
// Origin not listening for new connection, should return an error
bastionHost, _ := carrier.ResolveBastionDest(bastionReq, false, "bastion")
_, err := service.EstablishConnection(context.Background(), bastionHost, TestLogger)
assert.Error(t, err)
}
}
func TestHTTPServiceHostHeaderOverride(t *testing.T) {
cfg := OriginRequestConfig{
HTTPHostHeader: t.Name(),
}
handler := func(w http.ResponseWriter, r *http.Request) {
require.Equal(t, r.Host, t.Name())
if websocket.IsWebSocketUpgrade(r) {
respHeaders := websocket.NewResponseHeader(r)
for k, v := range respHeaders {
w.Header().Set(k, v[0])
}
w.WriteHeader(http.StatusSwitchingProtocols)
return
}
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// return the X-Forwarded-Host header for assertions
// as the httptest Server URL isn't available here yet
w.Write([]byte(r.Header.Get("X-Forwarded-Host")))
}
origin := httptest.NewServer(http.HandlerFunc(handler))
defer origin.Close()
originURL, err := url.Parse(origin.URL)
require.NoError(t, err)
httpService := &httpService{
url: originURL,
}
shutdownC := make(chan struct{})
require.NoError(t, httpService.start(TestLogger, shutdownC, cfg))
req, err := http.NewRequest(http.MethodGet, originURL.String(), nil)
require.NoError(t, err)
resp, err := httpService.RoundTrip(req)
require.NoError(t, err)
require.Equal(t, http.StatusOK, resp.StatusCode)
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respBody, err := io.ReadAll(resp.Body)
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require.NoError(t, err)
require.Equal(t, respBody, []byte(originURL.Host))
}
// TestHTTPServiceUsesIngressRuleScheme makes sure httpService uses scheme defined in ingress rule and not by eyeball request
func TestHTTPServiceUsesIngressRuleScheme(t *testing.T) {
handler := func(w http.ResponseWriter, r *http.Request) {
require.NotNil(t, r.TLS)
// Echo the X-Forwarded-Proto header for assertions
w.Write([]byte(r.Header.Get("X-Forwarded-Proto")))
}
origin := httptest.NewTLSServer(http.HandlerFunc(handler))
defer origin.Close()
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originURL, err := url.Parse(origin.URL)
require.NoError(t, err)
require.Equal(t, "https", originURL.Scheme)
cfg := OriginRequestConfig{
NoTLSVerify: true,
}
httpService := &httpService{
url: originURL,
}
shutdownC := make(chan struct{})
require.NoError(t, httpService.start(TestLogger, shutdownC, cfg))
// Tunnel uses scheme defined in the service field of the ingress rule, independent of the X-Forwarded-Proto header
protos := []string{"https", "http", "dne"}
for _, p := range protos {
req, err := http.NewRequest(http.MethodGet, originURL.String(), nil)
require.NoError(t, err)
req.Header.Add("X-Forwarded-Proto", p)
resp, err := httpService.RoundTrip(req)
require.NoError(t, err)
require.Equal(t, http.StatusOK, resp.StatusCode)
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respBody, err := io.ReadAll(resp.Body)
require.NoError(t, err)
require.Equal(t, respBody, []byte(p))
}
}
func tcpListenRoutine(listener net.Listener, closeChan chan struct{}) {
go func() {
for {
conn, err := listener.Accept()
if err != nil {
close(closeChan)
return
}
// Close immediately, this test is not about testing read/write on connection
conn.Close()
}
}()
}