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minio/cmd/server-mux_test.go

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/*
* Minio Cloud Storage, (C) 2015, 2016 Minio, Inc.
*
* 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 cmd
import (
"bufio"
"crypto/rand"
"crypto/rsa"
"crypto/tls"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"fmt"
"io/ioutil"
"math/big"
"net"
"net/http"
"net/http/httptest"
"os"
"runtime"
"sync"
"testing"
"time"
)
func TestListenerAcceptAfterClose(t *testing.T) {
var wg sync.WaitGroup
for i := 0; i < 16; i++ {
wg.Add(1)
go func() {
defer wg.Done()
for i := 0; i < 10; i++ {
runTest(t)
}
}()
}
wg.Wait()
}
func runTest(t *testing.T) {
const connectionsBeforeClose = 1
ln, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
t.Fatal(err)
}
ln = newListenerMux(ln, &tls.Config{})
addr := ln.Addr().String()
waitForListener := make(chan error)
go func() {
defer close(waitForListener)
var connCount int
for {
conn, aerr := ln.Accept()
if aerr != nil {
return
}
connCount++
if connCount > connectionsBeforeClose {
waitForListener <- errUnexpected
return
}
conn.Close()
}
}()
for i := 0; i < connectionsBeforeClose; i++ {
err = dial(addr)
if err != nil {
t.Fatal(err)
}
}
ln.Close()
dial(addr)
err = <-waitForListener
if err != nil {
t.Fatal(err)
}
}
func dial(addr string) error {
conn, err := net.Dial("tcp", addr)
if err == nil {
conn.Close()
}
return err
}
// Tests initializing listeners.
func TestInitListeners(t *testing.T) {
portTest1 := getFreePort()
portTest2 := getFreePort()
testCases := []struct {
serverAddr string
shouldPass bool
}{
// Test 1 with ip and port.
{
serverAddr: "127.0.0.1:" + portTest1,
shouldPass: true,
},
// Test 2 only port.
{
serverAddr: ":" + portTest2,
shouldPass: true,
},
// Test 3 with no port error.
{
serverAddr: "127.0.0.1",
shouldPass: false,
},
// Test 4 with 'foobar' host not resolvable.
{
serverAddr: "foobar:9000",
shouldPass: false,
},
}
for i, testCase := range testCases {
listeners, err := initListeners(testCase.serverAddr, &tls.Config{})
if testCase.shouldPass {
if err != nil {
t.Fatalf("Test %d: Unable to initialize listeners %s", i+1, err)
}
for _, listener := range listeners {
if err = listener.Close(); err != nil {
t.Fatalf("Test %d: Unable to close listeners %s", i+1, err)
}
}
}
if err == nil && !testCase.shouldPass {
t.Fatalf("Test %d: Should fail but is successful", i+1)
}
}
// Windows doesn't have 'localhost' hostname.
if runtime.GOOS != "windows" {
listeners, err := initListeners("localhost:"+getFreePort(), &tls.Config{})
if err != nil {
t.Fatalf("Test 3: Unable to initialize listeners %s", err)
}
for _, listener := range listeners {
if err = listener.Close(); err != nil {
t.Fatalf("Test 3: Unable to close listeners %s", err)
}
}
}
}
func TestClose(t *testing.T) {
// Create ServerMux
m := NewServerMux("", nil)
if err := m.Close(); err != nil {
t.Error("Server errored while trying to Close", err)
}
// Closing again should return an error.
if err := m.Close(); err.Error() != "Server has been closed" {
t.Error("Unexepcted error expected \"Server has been closed\", got", err)
}
}
func TestServerMux(t *testing.T) {
ts := httptest.NewUnstartedServer(nil)
defer ts.Close()
// Create ServerMux
m := NewServerMux("", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "hello")
}))
// Set the test server config to the mux
ts.Config = m.Server
ts.Start()
// Create a ListenerMux
lm := &ListenerMux{
Listener: ts.Listener,
config: &tls.Config{},
cond: sync.NewCond(&sync.Mutex{}),
}
m.listeners = []*ListenerMux{lm}
client := http.Client{}
res, err := client.Get(ts.URL)
if err != nil {
t.Fatal(err)
}
got, err := ioutil.ReadAll(res.Body)
if err != nil {
t.Fatal(err)
}
if string(got) != "hello" {
t.Errorf("got %q, want hello", string(got))
}
// Make sure there is only 1 connection
m.mu.Lock()
if len(m.conns) < 1 {
t.Fatal("Should have 1 connections")
}
m.mu.Unlock()
// Close the server
m.Close()
// Make sure there are zero connections
m.mu.Lock()
if len(m.conns) > 0 {
t.Fatal("Should have 0 connections")
}
m.mu.Unlock()
}
func TestServerCloseBlocking(t *testing.T) {
ts := httptest.NewUnstartedServer(nil)
defer ts.Close()
// Create ServerMux
m := NewServerMux("", http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "hello")
}))
// Set the test server config to the mux
ts.Config = m.Server
ts.Start()
// Create a ListenerMux.
lm := &ListenerMux{
Listener: ts.Listener,
config: &tls.Config{},
cond: sync.NewCond(&sync.Mutex{}),
}
m.listeners = []*ListenerMux{lm}
dial := func() net.Conn {
c, cerr := net.Dial("tcp", ts.Listener.Addr().String())
if cerr != nil {
t.Fatal(cerr)
}
return c
}
// Dial to open a StateNew but don't send anything
cnew := dial()
defer cnew.Close()
// Dial another connection but idle after a request to have StateIdle
cidle := dial()
defer cidle.Close()
cidle.Write([]byte("HEAD / HTTP/1.1\r\nHost: foo\r\n\r\n"))
_, err := http.ReadResponse(bufio.NewReader(cidle), nil)
if err != nil {
t.Fatal(err)
}
// Make sure we don't block forever.
m.Close()
// Make sure there are zero connections
m.mu.Lock()
if len(m.conns) > 0 {
t.Fatal("Should have 0 connections")
}
m.mu.Unlock()
}
func TestListenAndServePlain(t *testing.T) {
wait := make(chan struct{})
addr := net.JoinHostPort("127.0.0.1", getFreePort())
errc := make(chan error)
once := &sync.Once{}
// Initialize done channel specifically for each tests.
globalServiceDoneCh = make(chan struct{}, 1)
// Initialize signal channel specifically for each tests.
globalServiceSignalCh = make(chan serviceSignal, 1)
// Create ServerMux and when we receive a request we stop waiting
m := NewServerMux(addr, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "hello")
once.Do(func() { close(wait) })
}))
// ListenAndServe in a goroutine, but we don't know when it's ready
go func() { errc <- m.ListenAndServe("", "") }()
wg := &sync.WaitGroup{}
wg.Add(1)
// Keep trying the server until it's accepting connections
go func() {
client := http.Client{Timeout: time.Millisecond * 10}
ok := false
for !ok {
res, _ := client.Get("http://" + addr)
if res != nil && res.StatusCode == http.StatusOK {
ok = true
}
}
wg.Done()
}()
wg.Wait()
// Block until we get an error or wait closed
select {
case err := <-errc:
if err != nil {
t.Fatal(err)
}
case <-wait:
m.Close() // Shutdown the ServerMux
return
}
}
func TestListenAndServeTLS(t *testing.T) {
wait := make(chan struct{})
addr := net.JoinHostPort("127.0.0.1", getFreePort())
errc := make(chan error)
once := &sync.Once{}
// Initialize done channel specifically for each tests.
globalServiceDoneCh = make(chan struct{}, 1)
// Create ServerMux and when we receive a request we stop waiting
m := NewServerMux(addr, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprint(w, "hello")
once.Do(func() { close(wait) })
}))
// Create a cert
err := createCertsPath()
if err != nil {
t.Fatal(err)
}
certFile := mustGetCertFile()
keyFile := mustGetKeyFile()
defer os.RemoveAll(certFile)
defer os.RemoveAll(keyFile)
err = generateTestCert(addr)
if err != nil {
t.Error(err)
return
}
// ListenAndServe in a goroutine, but we don't know when it's ready
go func() { errc <- m.ListenAndServe(certFile, keyFile) }()
wg := &sync.WaitGroup{}
wg.Add(1)
// Keep trying the server until it's accepting connections
go func() {
tr := &http.Transport{
TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
}
client := http.Client{
Timeout: time.Millisecond * 10,
Transport: tr,
}
okTLS := false
for !okTLS {
res, _ := client.Get("https://" + addr)
if res != nil && res.StatusCode == http.StatusOK {
okTLS = true
}
}
okNoTLS := false
for !okNoTLS {
res, _ := client.Get("http://" + addr)
// Without TLS we expect a re-direction from http to https
// And also the request is not rejected.
if res != nil && res.StatusCode == http.StatusOK && res.Request.URL.Scheme == "https" {
okNoTLS = true
}
}
wg.Done()
}()
wg.Wait()
// Block until we get an error or wait closed
select {
case err := <-errc:
if err != nil {
t.Error(err)
return
}
case <-wait:
m.Close() // Shutdown the ServerMux
return
}
}
// generateTestCert creates a cert and a key used for testing only
func generateTestCert(host string) error {
certPath := mustGetCertFile()
keyPath := mustGetKeyFile()
priv, err := rsa.GenerateKey(rand.Reader, 2048)
if err != nil {
return err
}
serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
if err != nil {
return err
}
template := x509.Certificate{
SerialNumber: serialNumber,
Subject: pkix.Name{
Organization: []string{"Minio Test Cert"},
},
NotBefore: time.Now().UTC(),
NotAfter: time.Now().UTC().Add(time.Minute * 1),
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
BasicConstraintsValid: true,
}
if ip := net.ParseIP(host); ip != nil {
template.IPAddresses = append(template.IPAddresses, ip)
}
template.IsCA = true
template.KeyUsage |= x509.KeyUsageCertSign
derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, &priv.PublicKey, priv)
if err != nil {
return err
}
certOut, err := os.Create(certPath)
if err != nil {
return err
}
pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
certOut.Close()
keyOut, err := os.OpenFile(keyPath, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
return err
}
pem.Encode(keyOut, &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(priv)})
keyOut.Close()
return nil
}