package server
import (
"encoding/json"
"fmt"
"io/ioutil"
"net/http"
"net/http/httptest"
"net/url"
"os"
"strconv"
"sync"
"testing"
"time"
"github.com/gorilla/websocket"
)
const (
SetupWantSocketServer = 1 << iota
SetupWantBackendServer
SetupWantURLs
)
const SetupNoServers = 0
var signalCatch sync.Once
func TSetup(flags int, backendChecker *TBackendRequestChecker) (socketserver *httptest.Server, backend *httptest.Server, urls TURLs) {
signalCatch.Do(func() {
go dumpStackOnCtrlZ()
})
DumpBacklogData()
ioutil.WriteFile("index.html", []byte(`
CatBag
`), 0644)
conf := &ConfigFile{
ServerID: 20,
UseSSL: false,
OurPublicKey: []byte{176, 149, 72, 209, 35, 42, 110, 220, 22, 236, 212, 129, 213, 199, 1, 227, 185, 167, 150, 159, 117, 202, 164, 100, 9, 107, 45, 141, 122, 221, 155, 73},
OurPrivateKey: []byte{247, 133, 147, 194, 70, 240, 211, 216, 223, 16, 241, 253, 120, 14, 198, 74, 237, 180, 89, 33, 146, 146, 140, 58, 88, 160, 2, 246, 112, 35, 239, 87},
BackendPublicKey: []byte{19, 163, 37, 157, 50, 139, 193, 85, 229, 47, 166, 21, 153, 231, 31, 133, 41, 158, 8, 53, 73, 0, 113, 91, 13, 181, 131, 248, 176, 18, 1, 107},
}
if flags&SetupWantBackendServer != 0 {
backend = httptest.NewServer(backendChecker)
conf.BackendURL = fmt.Sprintf("http://%s", backend.Listener.Addr().String())
}
Configuration = conf
setupBackend(conf)
if flags&SetupWantSocketServer != 0 {
serveMux := http.NewServeMux()
SetupServerAndHandle(conf, serveMux)
dumpUniqueUsers()
socketserver = httptest.NewServer(serveMux)
}
if flags&SetupWantURLs != 0 {
urls = TGetUrls(socketserver, backend)
}
return
}
type TBC interface {
Error(args ...interface{})
Errorf(format string, args ...interface{})
}
const MethodIsPost = "POST"
type TExpectedBackendRequest struct {
ResponseCode int
Path string
// Method string // always POST
PostForm *url.Values
Response string
ResponseHeaders http.Header
}
func (er *TExpectedBackendRequest) String() string {
if MethodIsPost == "" {
return er.Path
}
return fmt.Sprintf("%s %s: %s", MethodIsPost, er.Path, er.PostForm.Encode())
}
type TBackendRequestChecker struct {
ExpectedRequests []TExpectedBackendRequest
currentRequest int
tb TBC
mutex sync.Mutex
}
func NewTBackendRequestChecker(tb TBC, urls ...TExpectedBackendRequest) *TBackendRequestChecker {
return &TBackendRequestChecker{ExpectedRequests: urls, tb: tb, currentRequest: 0}
}
func (backend *TBackendRequestChecker) ServeHTTP(w http.ResponseWriter, r *http.Request) {
backend.mutex.Lock()
defer backend.mutex.Unlock()
if r.Method != MethodIsPost {
backend.tb.Errorf("Bad backend request: was not a POST. %v", r)
return
}
r.ParseForm()
unsealedForm, err := Backend.secureForm.Unseal(r.PostForm)
if err != nil {
backend.tb.Errorf("Failed to unseal backend request: %v", err)
}
if backend.currentRequest >= len(backend.ExpectedRequests) {
backend.tb.Errorf("Unexpected backend request: %s %s: %s", r.Method, r.URL, unsealedForm)
return
}
cur := backend.ExpectedRequests[backend.currentRequest]
backend.currentRequest++
headers := w.Header()
for k, v := range cur.ResponseHeaders {
if len(v) == 1 {
headers.Set(k, v[0])
} else if len(v) == 0 {
headers.Del(k)
} else {
for _, hv := range v {
headers.Add(k, hv)
}
}
}
defer func() {
w.WriteHeader(cur.ResponseCode)
if cur.Response != "" {
w.Write([]byte(cur.Response))
}
}()
if cur.Path != "" {
if r.URL.Path != cur.Path {
backend.tb.Errorf("Bad backend request. Expected %v, got %s %s", cur, r.Method, r.URL)
return
}
}
if cur.PostForm != nil {
anyErr := TcompareForms(backend.tb, "Different form contents", *cur.PostForm, unsealedForm)
if anyErr {
backend.tb.Errorf("...in %s %s: %s", r.Method, r.URL, unsealedForm.Encode())
}
}
}
func (backend *TBackendRequestChecker) Close() error {
if backend.currentRequest < len(backend.ExpectedRequests) {
backend.tb.Errorf("Not all requests sent, got %d out of %d", backend.currentRequest, len(backend.ExpectedRequests))
}
return nil
}
func TcompareForms(tb TBC, ctx string, expectedForm, gotForm url.Values) (anyErrors bool) {
for k, expVal := range expectedForm {
gotVal, ok := gotForm[k]
if !ok {
tb.Errorf("%s: Form[%s]: Expected %v, (got nothing)", ctx, k, expVal)
anyErrors = true
continue
}
if len(expVal) != len(gotVal) {
tb.Errorf("%s: Form[%s]: Expected %d%v, Got %d%v", ctx, k, len(expVal), expVal, len(gotVal), gotVal)
anyErrors = true
continue
}
for i, el := range expVal {
if gotVal[i] != el {
tb.Errorf("%s: Form[%s][%d]: Expected %s, Got %s", ctx, k, i, el, gotVal[i])
anyErrors = true
}
}
}
for k, gotVal := range gotForm {
_, ok := expectedForm[k]
if !ok {
tb.Errorf("%s: Form[%s]: (expected nothing), Got %v", ctx, k, gotVal)
anyErrors = true
}
}
return anyErrors
}
func TCountOpenFDs() uint64 {
ary, _ := ioutil.ReadDir(fmt.Sprintf("/proc/%d/fd", os.Getpid()))
return uint64(len(ary))
}
const IgnoreReceivedArguments = 1 + 2i
func TReceiveExpectedMessage(tb testing.TB, conn *websocket.Conn, messageID int, command Command, arguments interface{}) (ClientMessage, bool) {
var msg ClientMessage
var fail bool
messageType, packet, err := conn.ReadMessage()
if err != nil {
tb.Error(err)
return msg, false
}
if messageType != websocket.TextMessage {
tb.Error("got non-text message", packet)
return msg, false
}
err = UnmarshalClientMessage(packet, messageType, &msg)
if err != nil {
tb.Error(err)
return msg, false
}
if msg.MessageID != messageID {
tb.Error("Message ID was wrong. Expected", messageID, ", got", msg.MessageID, ":", msg)
fail = true
}
if msg.Command != command {
tb.Error("Command was wrong. Expected", command, ", got", msg.Command, ":", msg)
fail = true
}
if arguments != IgnoreReceivedArguments {
if arguments == nil {
if msg.origArguments != "" {
tb.Error("Arguments are wrong. Expected", arguments, ", got", msg.Arguments, ":", msg)
}
} else {
argBytes, _ := json.Marshal(arguments)
if msg.origArguments != string(argBytes) {
tb.Error("Arguments are wrong. Expected", arguments, ", got", msg.Arguments, ":", msg)
}
}
}
return msg, !fail
}
func TSendMessage(tb testing.TB, conn *websocket.Conn, messageID int, command Command, arguments interface{}) bool {
SendMessage(conn, ClientMessage{MessageID: messageID, Command: command, Arguments: arguments})
return true
}
func TSealForSavePubMsg(tb testing.TB, cmd Command, channel string, arguments interface{}, deleteMode bool) (url.Values, error) {
form := url.Values{}
form.Set("cmd", string(cmd))
argsBytes, err := json.Marshal(arguments)
if err != nil {
tb.Error(err)
return nil, err
}
form.Set("args", string(argsBytes))
form.Set("channel", channel)
if deleteMode {
form.Set("delete", "1")
}
form.Set("time", strconv.FormatInt(time.Now().Unix(), 10))
sealed, err := Backend.secureForm.Seal(form)
if err != nil {
tb.Error(err)
return nil, err
}
return sealed, nil
}
func TSealForUncachedPubMsg(tb testing.TB, cmd Command, channel string, arguments interface{}, scope string, deleteMode bool) (url.Values, error) {
form := url.Values{}
form.Set("cmd", string(cmd))
argsBytes, err := json.Marshal(arguments)
if err != nil {
tb.Error(err)
return nil, err
}
form.Set("args", string(argsBytes))
form.Set("channel", channel)
if deleteMode {
form.Set("delete", "1")
}
form.Set("time", time.Now().Format(time.UnixDate))
form.Set("scope", scope)
sealed, err := Backend.secureForm.Seal(form)
if err != nil {
tb.Error(err)
return nil, err
}
return sealed, nil
}
func TCheckResponse(tb testing.TB, resp *http.Response, expected string, desc string) bool {
var failed bool
respBytes, err := ioutil.ReadAll(resp.Body)
resp.Body.Close()
respStr := string(respBytes)
if err != nil {
tb.Error(err)
failed = true
}
if resp.StatusCode != 200 {
tb.Error("Publish failed: ", resp.StatusCode, respStr)
failed = true
}
if respStr != expected {
tb.Errorf("Got wrong response from server. %s Expected: '%s' Got: '%s'", desc, expected, respStr)
failed = true
}
return !failed
}
type TURLs struct {
Websocket string
Origin string
UncachedPubMsg string // uncached_pub
SavePubMsg string // cached_pub
}
func TGetUrls(socketserver *httptest.Server, backend *httptest.Server) TURLs {
addr := socketserver.Listener.Addr().String()
return TURLs{
Websocket: fmt.Sprintf("ws://%s/", addr),
Origin: fmt.Sprintf("http://%s", addr),
UncachedPubMsg: fmt.Sprintf("http://%s/uncached_pub", addr),
SavePubMsg: fmt.Sprintf("http://%s/cached_pub", addr),
}
}
func TCheckHLLValue(tb testing.TB, expected uint64, actual uint64) {
high := uint64(float64(expected) * 1.05)
low := uint64(float64(expected) * 0.95)
if actual < low || actual > high {
tb.Errorf("Count outside expected range. Expected %d, Got %d", expected, actual)
}
}