func (fieldContext *FieldContextDef) sendSingleAvatarObject(websocketConnectionContext *websocketConnectionContextDef, fieldObject *fieldObjectDef) *gkerr.GkErrDef {
var gkErr *gkerr.GkErrDef
var svgJsonData *message.SvgJsonDataDef = new(message.SvgJsonDataDef)
svgJsonData.Id = fieldObject.id
svgJsonData.IsoXYZ = fieldObject.isoXYZ
gklog.LogTrace("sourceSessionId: " + fieldObject.sourceSessionId)
if fieldObject.sourceSessionId != websocketConnectionContext.sessionId {
var singleSession *ses.SingleSessionDef
singleSession = fieldContext.sessionContext.GetSessionFromId(fieldObject.sourceSessionId)
svgJsonData.UserName = singleSession.GetUserName()
gklog.LogTrace("going to send to ws userName: " + singleSession.GetUserName())
}
var messageToClient *message.MessageToClientDef = new(message.MessageToClientDef)
gkErr = messageToClient.BuildSvgMessageToClient(fieldContext.avatarSvgDir, message.AddSvgReq, fieldObject.fileName, svgJsonData)
if gkErr != nil {
return gkErr
}
fieldContext.queueMessageToClient(websocketConnectionContext.sessionId, messageToClient)
return nil
}
func (tokenContext *tokenContextDef) getUserFromToken(token string) string {
var ok bool
var tokenEntry *tokenEntryDef
tokenContext.purgeOldTokenEntries()
tokenContext.tokenMutex.Lock()
defer tokenContext.tokenMutex.Unlock()
gklog.LogTrace(fmt.Sprintf("getting token entry: %+v", token))
tokenEntry, ok = tokenContext.tokenMap[token]
if !ok {
gklog.LogTrace("did not find")
return ""
}
var userName string
userName = tokenEntry.userName
gklog.LogTrace("found " + userName)
// token cannot be reused
// but for now we allow it to be reused :)
//delete(tokenContext.tokenMap,tokenEntry.tokenId)
return userName
}
// an avatar is moving from one pod to another
// so delete any object matching by sessionId from old pod
// then add them to the new pod
func (fieldContext *FieldContextDef) moveAllAvatarBySessionId(sessionId string, oldPodId int32, newPodId int32, destinationX int16, destinationY int16, destinationZ int16) *gkerr.GkErrDef {
gklog.LogTrace("moving all object by session id")
var gkErr *gkerr.GkErrDef
for _, fieldObject := range fieldContext.podMap[oldPodId].avatarMap {
if fieldObject.sourceSessionId == sessionId {
var messageToClient *message.MessageToClientDef = new(message.MessageToClientDef)
messageToClient.Command = message.DelSvgReq
messageToClient.JsonData = []byte(fmt.Sprintf("{ \"id\": \"%s\"}", fieldObject.id))
messageToClient.Data = make([]byte, 0, 0)
for _, websocketConnectionContext := range fieldContext.podMap[oldPodId].websocketConnectionMap {
if sessionId == websocketConnectionContext.sessionId {
fieldObject.isoXYZ.X = destinationX
fieldObject.isoXYZ.Y = destinationY
fieldObject.isoXYZ.Z = destinationZ
gklog.LogTrace(fmt.Sprintf("moveAllAvatarBySessionId new destination: %d,%d,%d", fieldObject.isoXYZ.X, fieldObject.isoXYZ.Y, fieldObject.isoXYZ.Z))
}
fieldContext.queueMessageToClient(websocketConnectionContext.sessionId, messageToClient)
}
for _, websocketConnectionContext := range fieldContext.podMap[newPodId].websocketConnectionMap {
gkErr = fieldContext.sendSingleAvatarObject(websocketConnectionContext, fieldObject)
if gkErr != nil {
return gkErr
}
}
delete(fieldContext.podMap[oldPodId].avatarMap, fieldObject.id)
fieldContext.podMap[newPodId].avatarMap[fieldObject.id] = fieldObject
}
}
return nil
}
func (httpContext *httpContextDef) handleGameInitial(res http.ResponseWriter, req *http.Request) {
var gameData gameDataDef
var gkErr *gkerr.GkErrDef
var singleSession *ses.SingleSessionDef
var token string
token = req.Form.Get(_tokenParam)
gklog.LogTrace("got token: " + token)
var userName string
userName = httpContext.tokenContext.getUserFromToken(token)
gklog.LogTrace("got username: "******"not valid token", res, req)
return
}
var lastPodId int32
lastPodId, gkErr = httpContext.persistenceContext.GetLastPodId(userName)
if gkErr != nil {
errorMessage := "persistenceContext.getLastPodName"
gklog.LogGkErr(errorMessage, gkErr)
httpContext.redirectToError(errorMessage, res, req)
return
}
singleSession = httpContext.sessionContext.NewSingleSession(userName, lastPodId, req.RemoteAddr)
gameData.Title = "game"
gameData.WebAddressPrefix = httpContext.gameConfig.WebAddressPrefix
gameData.WebsocketAddressPrefix = httpContext.gameConfig.WebsocketAddressPrefix
gameData.AudioAddressPrefix = httpContext.gameConfig.AudioAddressPrefix
gameData.WebsocketPath = httpContext.gameConfig.WebsocketPath
gameData.SessionId = singleSession.GetSessionId()
gkErr = _gameTemplate.Build(gameData)
if gkErr != nil {
errorMessage := "_gameTemplate.Build"
gklog.LogGkErr(errorMessage, gkErr)
httpContext.redirectToError(errorMessage, res, req)
return
}
gkErr = _gameTemplate.Send(res, req)
if gkErr != nil {
gklog.LogGkErr("_gameTemplate.Send", gkErr)
return
}
}
func (tokenContext *tokenContextDef) ServeHTTP(res http.ResponseWriter, req *http.Request) {
path := req.URL.Path
gklog.LogTrace(req.Method)
gklog.LogTrace(path)
if req.Method == _methodGet || req.Method == _methodPost {
if gknet.RequestMatches(path, _tokenRequest) {
tokenContext.handleTokenRequest(res, req)
} else {
http.NotFound(res, req)
}
} else {
http.NotFound(res, req)
}
}
func (fieldContext *FieldContextDef) queueMessageToClient(sessionId string, messageToClient *message.MessageToClientDef) {
var websocketConnectionContext *websocketConnectionContextDef
var gkErr *gkerr.GkErrDef
gklog.LogTrace("queu up message " + messageToClient.Command)
websocketConnectionContext, gkErr =
fieldContext.getWebsocketConnectionContextById(sessionId)
if gkErr != nil {
gklog.LogGkErr("", gkErr)
} else {
var localSize int
websocketConnectionContext.toClientQueue.mutex.Lock()
localSize = websocketConnectionContext.toClientQueue.queueSize
websocketConnectionContext.toClientQueue.mutex.Unlock()
if localSize > MAX_MESSAGES_TO_CLIENT_QUEUE {
gkErr = gkerr.GenGkErr("messageToClient queue overflow, dropping message", nil, ERROR_ID_MESSAGE_TO_CLIENT_QUEUE_OVERFLOW)
gklog.LogGkErr("", gkErr)
} else {
websocketConnectionContext.toClientQueue.mutex.Lock()
websocketConnectionContext.toClientQueue.queueSize += 1
websocketConnectionContext.toClientQueue.mutex.Unlock()
websocketConnectionContext.toClientQueue.messagesChan <- messageToClient
}
}
}
func (websocketConnectionContext *websocketConnectionContextDef) runQueue() {
var done bool
done = false
for !done {
var messageToClient *message.MessageToClientDef
select {
case messageToClient = <-websocketConnectionContext.toClientQueue.messagesChan:
case done = <-websocketConnectionContext.toClientQueue.doneChan:
}
if !done {
gklog.LogTrace("got message to send: " + messageToClient.Command)
select {
case websocketConnectionContext.messageToClientChan <- messageToClient:
case done = <-websocketConnectionContext.toClientQueue.doneChan:
}
if !done {
websocketConnectionContext.toClientQueue.mutex.Lock()
websocketConnectionContext.toClientQueue.queueSize -= 1
websocketConnectionContext.toClientQueue.mutex.Unlock()
}
}
}
}
// purge any expired tokens
func checkTokenExpire() {
expireTime := time.Now().Add(time.Duration(-1) * _tokenExpiry)
for k, v := range _tokenMap {
if expireTime.After(v.createdDate) {
gklog.LogTrace(fmt.Sprintf("removing map entry (timeout) k: %+v v: %+v", k, v))
delete(_tokenMap, k)
}
}
}
func NewTemplate(templateDir string, templateName string) (*TemplateDef, *gkerr.GkErrDef) {
var gkTemplate *TemplateDef = new(TemplateDef)
gkTemplate.tmpl = template.New(templateName)
var file *os.File
var templateListFileName string
var err error
templateListFileName = templateDir + string(os.PathSeparator) + templateName + ".txt"
file, err = os.Open(templateListFileName)
if err != nil {
return nil, gkerr.GenGkErr("os.Open", err, ERROR_ID_OPEN_TEMPLATE_LIST)
}
defer file.Close()
var br *bufio.Reader
localFileNames := make([]string, 0, 0)
br = bufio.NewReader(file)
for {
var line string
line, err = br.ReadString('\n')
line = strings.Trim(line, "\r\n\t ")
if line != "" {
localFileNames = append(localFileNames, templateDir+string(os.PathSeparator)+line)
}
if err != nil {
if err == io.EOF {
break
}
return nil, gkerr.GenGkErr("br.ReadString", err, ERROR_ID_READ_TEMPLATE_LIST)
}
}
// localFileNames = make([]string, len(fileNames), len(fileNames))
// for i := 0; i < len(fileNames); i++ {
// localFileNames[i] = templateDir + string(os.PathSeparator) + fileNames[i] + ".html"
// }
gklog.LogTrace(fmt.Sprintf("localFileNames: %+v", localFileNames))
_, err = gkTemplate.tmpl.ParseFiles(localFileNames...)
if err != nil {
return nil, gkerr.GenGkErr("tmpl.ParseFiles", err, ERROR_ID_PARSE_FILES)
}
return gkTemplate, nil
}
// check if the token / userName is valid
func CheckToken(token string, userName string) bool {
_tokenMapMutex.Lock()
defer _tokenMapMutex.Unlock()
checkTokenExpire()
var tokenEntry tokenEntryDef
var ok bool
tokenEntry, ok = _tokenMap[token]
gklog.LogTrace(fmt.Sprintf("check map entry k: %+v v: %+v", token, ok))
if ok {
gklog.LogTrace(fmt.Sprintf("check map entry k: %+v v: %+v", token, tokenEntry))
if tokenEntry.userName == userName {
return true
}
}
return false
}
func (httpContext *httpContextDef) ServeHTTP(res http.ResponseWriter, req *http.Request) {
if _gameTemplate == nil {
gklog.LogError("missing call to gameInit")
}
path := req.URL.Path
gklog.LogTrace(req.Method)
gklog.LogTrace(path)
if req.Method == _methodGet || req.Method == _methodPost {
if gknet.RequestMatches(path, _gameRequest) {
httpContext.handleGameRequest(res, req)
} else {
http.NotFound(res, req)
}
} else {
http.NotFound(res, req)
}
}
func (fieldContext *FieldContextDef) setAllAvatars(sessionId string, fieldObject *fieldObjectDef) {
var messageToClient *message.MessageToClientDef = new(message.MessageToClientDef)
messageToClient.Command = message.SetSvgReq
messageToClient.JsonData = []byte(fmt.Sprintf("{ \"id\": \"%s\", \"x\": %d, \"y\": %d, \"z\": %d }", fieldObject.id, fieldObject.isoXYZ.X, fieldObject.isoXYZ.Y, fieldObject.isoXYZ.Z))
var singleSession *ses.SingleSessionDef
singleSession = fieldContext.sessionContext.GetSessionFromId(sessionId)
var podId int32 = singleSession.GetCurrentPodId()
for _, websocketConnectionContext := range fieldContext.podMap[podId].websocketConnectionMap {
gklog.LogTrace("compare session " + websocketConnectionContext.sessionId + " " + sessionId)
if websocketConnectionContext.sessionId != sessionId {
gklog.LogTrace("Trace about to queue up move command")
fieldContext.queueMessageToClient(websocketConnectionContext.sessionId, messageToClient)
}
}
}
func (tokenContext *tokenContextDef) purgeOldTokenEntries() {
tokenContext.tokenMutex.Lock()
defer tokenContext.tokenMutex.Unlock()
for tokenId, tokenEntry := range tokenContext.tokenMap {
if tokenEntry.createdDate.Add(time.Second * _tokenTimeoutSeconds).Before(time.Now()) {
gklog.LogTrace(fmt.Sprintf("purge token entry: %+v", tokenEntry))
delete(tokenContext.tokenMap, tokenId)
}
}
}
func (loginConfig *loginConfigDef) ServeHTTP(res http.ResponseWriter, req *http.Request) {
if _loginTemplate == nil {
gklog.LogError("missing call to loginInit")
}
path := req.URL.Path
gklog.LogTrace(req.Method)
gklog.LogTrace(path)
if req.Method == _methodGet || req.Method == _methodPost {
if gknet.RequestMatches(path, _loginServer) {
handleLogin(loginConfig, res, req)
} else {
http.NotFound(res, req)
}
} else {
http.NotFound(res, req)
}
}
func (fieldContext *FieldContextDef) handleSetAvatarSvgReq(messageFromClient *message.MessageFromClientDef) *gkerr.GkErrDef {
var gkErr *gkerr.GkErrDef
var err error
var setSvg setSvgDef
gklog.LogTrace("json raw: " + string(messageFromClient.JsonData))
err = json.Unmarshal(messageFromClient.JsonData, &setSvg)
if err != nil {
gkErr = gkerr.GenGkErr("json.Unmarshal", err, ERROR_ID_JSON_UNMARSHAL)
return gkErr
}
var singleSession *ses.SingleSessionDef
singleSession = fieldContext.sessionContext.GetSessionFromId(messageFromClient.SessionId)
var podId int32 = singleSession.GetCurrentPodId()
var fieldObject *fieldObjectDef
var ok bool
fieldObject, ok = fieldContext.podMap[podId].avatarMap[setSvg.Id]
if ok {
var cord int
cord, _ = strconv.Atoi(setSvg.X)
fieldObject.isoXYZ.X = int16(cord)
cord, _ = strconv.Atoi(setSvg.Y)
fieldObject.isoXYZ.Y = int16(cord)
cord, _ = strconv.Atoi(setSvg.Z)
fieldObject.isoXYZ.Z = int16(cord)
gklog.LogTrace("one")
fieldContext.setAllAvatars(messageFromClient.SessionId, fieldObject)
} else {
gkErr = gkerr.GenGkErr("move object", nil, ERROR_ID_COULD_NOT_FIND_OBJECT_TO_MOVE)
gklog.LogGkErr("", gkErr)
}
return nil
}
// add a new token / userName to the list of tokens
func AddNewToken(token string, userName string) {
_tokenMapMutex.Lock()
defer _tokenMapMutex.Unlock()
checkTokenExpire()
var tokenEntry tokenEntryDef
tokenEntry.userName = userName
tokenEntry.createdDate = time.Now()
_tokenMap[token] = tokenEntry
gklog.LogTrace(fmt.Sprintf("add map entry k: %+v v: %+v", token, tokenEntry))
}
func (gkTemplate *TemplateDef) Build(buildData interface{}) *gkerr.GkErrDef {
gkTemplate.dataBuffer = bytes.NewBuffer(make([]byte, 0, 0))
var err error
gklog.LogTrace(fmt.Sprintf("buildData: %+v", buildData))
err = gkTemplate.tmpl.ExecuteTemplate(gkTemplate.dataBuffer, "main", buildData)
if err != nil {
return gkerr.GenGkErr("tmpl.ExecuteTemplate", err, ERROR_ID_EXECUTE_TEMPLATE)
}
return nil
}
// put the avatar back
func (fieldContext *FieldContextDef) reAddAvatarBySessionId(sessionId string, newPodId int32) *gkerr.GkErrDef {
gklog.LogTrace("re adding an avatar by session id")
var gkErr *gkerr.GkErrDef
for _, fieldObject := range fieldContext.podMap[newPodId].avatarMap {
if fieldObject.sourceSessionId == sessionId {
websocketConnectionContext := fieldContext.podMap[newPodId].websocketConnectionMap[sessionId]
gklog.LogTrace(fmt.Sprintf("reAddAvatarBySessionId new destination: %d,%d,%d", fieldObject.isoXYZ.X, fieldObject.isoXYZ.Y, fieldObject.isoXYZ.Z))
gkErr = fieldContext.sendSingleAvatarObject(websocketConnectionContext, fieldObject)
if gkErr != nil {
return gkErr
}
// for _, websocketConnectionContext := range fieldContext.podMap[newPodId].websocketConnectionMap {
// if (sessionId == websocketConnectionContext.sessionId) {
// }
// }
}
}
return nil
}
func (fieldContext *FieldContextDef) handleSaveTerrainEditReq(messageFromClient *message.MessageFromClientDef) *gkerr.GkErrDef {
var saveTerrainEditReq saveTerrainEditReqDef
var gkErr *gkerr.GkErrDef
var err error
var singleSession *ses.SingleSessionDef
singleSession = fieldContext.sessionContext.GetSessionFromId(messageFromClient.SessionId)
gklog.LogTrace("handleSaveTerrainEditReq")
gklog.LogTrace(fmt.Sprintf("singleSession: %+v", singleSession))
gklog.LogTrace(fmt.Sprintf("messageFromClient.JsonData: %s", string(messageFromClient.JsonData)))
err = json.Unmarshal(messageFromClient.JsonData, &saveTerrainEditReq)
if err != nil {
gkErr = gkerr.GenGkErr("json.Unmarshal", err, ERROR_ID_JSON_UNMARSHAL)
return gkErr
}
for k, v := range saveTerrainEditReq.TerrainMapMap {
gklog.LogTrace(fmt.Sprintf("k: %+v", k))
gklog.LogTrace(fmt.Sprintf("v: %+v", v))
// v has:
// x, y, zlist, terrainName, Field
}
//
// gkErr = fieldContext.persistenceContext.SetSaveTerrainEdit(singleSession.GetUserName(), saveTerrainEditReq.PrefName, saveTerrainEditReq.PrefValue)
// if gkErr != nil {
// // inserting user preferences is non critical
// // so just log the error
// gklog.LogGkErr("fieldContext.persistenceContext.SetSaveTerrainEdit", gkErr)
// }
return nil
}
func NewFieldContext(avatarSvgDir string, terrainSvgDir string, sessionContext *ses.SessionContextDef, persistenceContext *persistence.PersistenceContextDef) (*FieldContextDef, *gkerr.GkErrDef) {
var fieldContext *FieldContextDef = new(FieldContextDef)
var gkErr *gkerr.GkErrDef
fieldContext.avatarSvgDir = avatarSvgDir
fieldContext.terrainSvgDir = terrainSvgDir
fieldContext.sessionContext = sessionContext
fieldContext.persistenceContext = persistenceContext
fieldContext.WebsocketOpenedChan = make(chan WebsocketOpenedMessageDef)
fieldContext.WebsocketClosedChan = make(chan WebsocketClosedMessageDef)
fieldContext.MessageFromClientChan = make(chan *message.MessageFromClientDef)
var podList []database.DbPodDef
podList, gkErr = persistenceContext.GetPodsList()
if gkErr != nil {
return nil, gkErr
}
fieldContext.podMap = make(map[int32]*podEntryDef)
for _, dbPod := range podList {
gklog.LogTrace(fmt.Sprintf("populate pod %+v", dbPod))
var podEntry *podEntryDef = new(podEntryDef)
podEntry.podId = dbPod.Id
podEntry.title = dbPod.Title
podEntry.websocketConnectionMap = make(map[string]*websocketConnectionContextDef)
podEntry.avatarMap = make(map[string]*fieldObjectDef)
podEntry.objectMap = make(map[string]*fieldObjectDef)
podEntry.terrainJson, gkErr = fieldContext.newTerrainMap(podEntry.podId)
if gkErr != nil {
return nil, gkErr
}
fieldContext.podMap[podEntry.podId] = podEntry
}
fieldContext.savedChatMutex = new(sync.Mutex)
fieldContext.savedChat = list.New()
// fieldContext.terrainMap, gkErr = fieldContext.newTerrainMap(fieldContext, fieldContext.terrainSvgDir, fieldContext.persistenceContext)
// if gkErr != nil {
// return nil, gkErr
// }
return fieldContext, nil
}
func goGetMessage(ws *websocket.Conn, ch chan *receiveWebsocketDef) {
var receiveWebsocket *receiveWebsocketDef
var err error
for {
var message []byte
message = make([]byte, 0, 0)
err = websocket.Message.Receive(ws, &message)
receiveWebsocket = new(receiveWebsocketDef)
receiveWebsocket.message = message
receiveWebsocket.err = err
ch <- receiveWebsocket
if err != nil {
gklog.LogTrace("exit goGetMessage due to error")
break
}
}
}
func (tokenContext *tokenContextDef) handleTokenRequest(res http.ResponseWriter, req *http.Request) {
req.ParseForm()
var tokenEntry *tokenEntryDef = new(tokenEntryDef)
var userName string = req.Form.Get(_userNameParam)
if len(userName) > 2 {
tokenEntry.tokenId = tokenContext.getSessionToken()
tokenEntry.createdDate = time.Now()
tokenEntry.userName = userName
tokenContext.tokenMutex.Lock()
tokenContext.tokenMap[tokenEntry.tokenId] = tokenEntry
tokenContext.tokenMutex.Unlock()
gklog.LogTrace(fmt.Sprintf("adding token entry: %+v", tokenEntry))
} else {
tokenEntry.tokenId = ""
}
res.Write([]byte(tokenEntry.tokenId))
}
func (fieldContext *FieldContextDef) removeAllAvatarBySessionId(sessionId string) {
gklog.LogTrace("removing all object by session id")
var singleSession *ses.SingleSessionDef
singleSession = fieldContext.sessionContext.GetSessionFromId(sessionId)
var podId int32 = singleSession.GetCurrentPodId()
for _, fieldObject := range fieldContext.podMap[podId].avatarMap {
if fieldObject.sourceSessionId == sessionId {
var messageToClient *message.MessageToClientDef = new(message.MessageToClientDef)
messageToClient.Command = message.DelSvgReq
messageToClient.JsonData = []byte(fmt.Sprintf("{ \"id\": \"%s\"}", fieldObject.id))
messageToClient.Data = make([]byte, 0, 0)
//fieldContext.removeSendRemoveAvatarBySessionId(podId, messageToClient)
for _, websocketConnectionContext := range fieldContext.podMap[podId].websocketConnectionMap {
fieldContext.queueMessageToClient(websocketConnectionContext.sessionId, messageToClient)
}
delete(fieldContext.podMap[podId].avatarMap, fieldObject.id)
}
}
}
func GameServerStart() {
var fileName *string = flag.String("config", "", "config file name")
var gameConfig *config.GameConfigDef
var gkErr *gkerr.GkErrDef
flag.Parse()
if *fileName == "" {
flag.PrintDefaults()
return
}
gameConfig, gkErr = config.LoadConfigFile(*fileName)
if gkErr != nil {
fmt.Print(gkErr.String())
return
}
gklog.LogInit(gameConfig.LogDir)
var randContext *gkrand.GkRandContextDef
var persistenceContext *persistence.PersistenceContextDef
var tokenContext *tokenContextDef
var sessionContext *ses.SessionContextDef
var httpContext *httpContextDef
randContext = gkrand.NewGkRandContext()
persistenceContext, gkErr = persistence.NewPersistenceContext(gameConfig)
if gkErr != nil {
gklog.LogGkErr("persistence.NewPersisenceContext", gkErr)
return
}
tokenContext = NewTokenContext(gameConfig, randContext, sessionContext)
sessionContext = ses.NewSessionContext(randContext)
httpContext = NewHttpContext(gameConfig, persistenceContext, sessionContext, tokenContext)
gkErr = httpContext.gameInit()
if gkErr != nil {
gklog.LogGkErr("httpContext.gameInit", gkErr)
return
}
gkErr = tokenContext.gameInit()
if gkErr != nil {
gklog.LogGkErr("tokenContext.gameInit", gkErr)
return
}
gklog.LogTrace("game server started")
var wsContext *ws.WsContextDef
var fieldContext *field.FieldContextDef
fieldContext, gkErr = field.NewFieldContext(gameConfig.AvatarSvgDir, gameConfig.TerrainSvgDir, sessionContext, persistenceContext)
if gkErr != nil {
gklog.LogGkErr("field.NewFieldContext", gkErr)
return
}
wsContext = ws.NewWsContext(gameConfig, sessionContext, fieldContext)
ws.SetGlobalWsContext(wsContext)
go fieldContext.StartFieldHandler()
httpAddress := fmt.Sprintf(":%d", gameConfig.HttpPort)
tokenAddress := fmt.Sprintf(":%d", gameConfig.TokenPort)
var err error
go func() {
err = http.ListenAndServe(tokenAddress, tokenContext)
if err != nil {
gkErr = gkerr.GenGkErr("http.ListenAndServer token", err, ERROR_ID_TOKEN_SERVER_START)
gklog.LogGkErr("", gkErr)
return
}
gklog.LogTrace("token listener ended, this is probably bad")
}()
go func() {
err = http.ListenAndServe(httpAddress, httpContext)
if err != nil {
gkErr = gkerr.GenGkErr("http.ListenAndServer http", err, ERROR_ID_HTTP_SERVER_START)
gklog.LogGkErr("", gkErr)
return
}
gklog.LogTrace("http listener ended, this is probably bad")
}()
go func() {
websocketAddress := fmt.Sprintf(":%d", gameConfig.WebsocketPort)
gklog.LogTrace("starting web socket listener")
if gameConfig.CertificatePath == "" {
err = http.ListenAndServe(websocketAddress, websocket.Handler(ws.WebsocketHandler))
} else {
err = http.ListenAndServeTLS(websocketAddress, gameConfig.CertificatePath, gameConfig.PrivateKeyPath, websocket.Handler(ws.WebsocketHandler))
}
if err != nil {
gkErr = gkerr.GenGkErr("http.ListenAndServer websocket", err, ERROR_ID_WEBSOCKET_SERVER_START)
gklog.LogGkErr("", gkErr)
return
}
gklog.LogTrace("websocket listener ended, this is probably bad")
}()
// give it time for the servers to start
time.Sleep(time.Second * 60)
// wait for all go routines to finish
select {}
gklog.LogTrace("game server ended")
}
func WebsocketHandler(ws *websocket.Conn) {
var url *url.URL = ws.Request().URL
var gkErr *gkerr.GkErrDef
defer ws.Close()
gklog.LogTrace("WebsocketHandler start")
defer gklog.LogTrace("WebsocketHandler end")
// var websocketConfig *websocket.Config
// websocketConfig = ws.Config()
if url.Path != _wsContext.gameConfig.WebsocketPath {
gkErr = gkerr.GenGkErr("invalid websocket path: "+url.Path, nil, ERROR_ID_WEBSOCKET_INVALID_PATH)
gklog.LogGkErr("", gkErr)
return
}
var sessionId string
sessionId = _wsContext.sessionContext.OpenSessionWebsocket(url.RawQuery, ws.Request().RemoteAddr)
if sessionId == "" {
gkErr = gkerr.GenGkErr("session not valid", nil, ERROR_ID_WEBSOCKET_INVALID_SESSION)
gklog.LogGkErr("", gkErr)
return
}
defer func() {
_wsContext.sessionContext.CloseSessionWebsocket(sessionId)
}()
var singleSession *ses.SingleSessionDef
var singleWs *singleWsDef
singleSession = _wsContext.sessionContext.GetSessionFromId(sessionId)
singleWs = _wsContext.newSingleWs(singleSession)
var websocketOpenedMessage field.WebsocketOpenedMessageDef
websocketOpenedMessage.SessionId = sessionId
websocketOpenedMessage.MessageToClientChan = singleWs.messageToClientChan
_wsContext.fieldContext.WebsocketOpenedChan <- websocketOpenedMessage
defer func() {
var websocketClosedMessage field.WebsocketClosedMessageDef
websocketClosedMessage.SessionId = sessionId
_wsContext.fieldContext.WebsocketClosedChan <- websocketClosedMessage
}()
var receiveWebsocketChan chan *receiveWebsocketDef = make(chan *receiveWebsocketDef)
go goGetMessage(ws, receiveWebsocketChan)
var done bool = false
for !done {
var receiveWebsocket *receiveWebsocketDef
select {
case receiveWebsocket = <-receiveWebsocketChan:
if receiveWebsocket.err != nil {
if receiveWebsocket.err == io.EOF {
gklog.LogTrace(fmt.Sprintf("closing websocket got eof sessionId: %s", sessionId))
done = true
break
}
gkErr = gkerr.GenGkErr(fmt.Sprintf("got websocket input error sessionId %s", sessionId), receiveWebsocket.err, ERROR_ID_WEBSOCKET_RECEIVE)
gklog.LogGkErr("websocket error", gkErr)
return
} else {
var messageFromClient *message.MessageFromClientDef = new(message.MessageFromClientDef)
messageFromClient.PopulateFromMessage(sessionId, receiveWebsocket.message)
_wsContext.fieldContext.MessageFromClientChan <- messageFromClient
}
case messageToClient := <-singleWs.messageToClientChan:
gkErr = sendWebsocketMessage(ws, messageToClient)
if gkErr != nil {
gklog.LogGkErr(fmt.Sprintf("sendWebsocketMessage sessionId: %s", sessionId), gkErr)
return
}
}
}
}
func handleLogin(loginConfig *loginConfigDef, res http.ResponseWriter, req *http.Request) {
var act string
var userName string
var password string
var email string
var token string
req.ParseForm()
act = req.Form.Get(_actParam)
userName = req.Form.Get(_userNameParam)
password = req.Form.Get(_passwordParam)
email = req.Form.Get(_emailParam)
token = req.Form.Get(_tokenParam)
// for security sleep on password attempt
time.Sleep(sec.GetSleepDurationPasswordAttempt())
gklog.LogTrace("act: " + act)
switch act {
case "":
var login string
login = req.Form.Get(_loginParam)
if login != "" {
handleLoginLogin(loginConfig, res, req, userName, password)
return
}
handleLoginInitial(loginConfig, res, req)
return
case "login":
var register string
var forgotPassword string
register = req.Form.Get(_registerParam)
forgotPassword = req.Form.Get(_forgotPasswordParam)
if register != "" {
handleLoginRegisterInitial(loginConfig, res, req, userName)
return
}
if forgotPassword != "" {
handleLoginForgotPasswordInitial(loginConfig, res, req)
return
}
if userName == "" {
handleLoginInitial(loginConfig, res, req)
return
}
handleLoginLogin(loginConfig, res, req, userName, password)
return
case "register":
handleLoginRegister(loginConfig, res, req, userName, password, email)
case "forgot_password":
handleLoginForgotPassword(loginConfig, res, req, userName)
case "reset_password":
handleLoginResetPassword(loginConfig, res, req, token, userName, password)
default:
gklog.LogError("unknown act")
redirectToError("unknown act", res, req)
return
}
}
func handleLoginLogin(loginConfig *loginConfigDef, res http.ResponseWriter, req *http.Request, userName string, password string) {
var loginData loginDataDef
var gkErr *gkerr.GkErrDef
var gotError bool
loginData.Title = "login"
loginData.UserName = userName
loginData.LoginWebAddressPrefix = loginConfig.LoginWebAddressPrefix
if loginData.UserName == "" {
loginData.ErrorList = append(loginData.ErrorList, "invalid user name")
loginData.UserNameError = genErrorMarker()
gotError = true
}
if password == "" {
loginData.ErrorList = append(loginData.ErrorList, "invalid password")
loginData.PasswordError = genErrorMarker()
gotError = true
}
var passwordHashFromUser []byte
var dbUser *database.DbUserDef
var gkDbCon *database.GkDbConDef
if !gotError {
gkDbCon, gkErr = database.NewGkDbCon(loginConfig.DatabaseUserName, loginConfig.DatabasePassword, loginConfig.DatabaseHost, loginConfig.DatabasePort, loginConfig.DatabaseDatabase)
if gkErr != nil {
gklog.LogGkErr("database.NewGkDbCon", gkErr)
redirectToError("database.NewGkDbCon", res, req)
return
}
defer gkDbCon.Close()
dbUser, gkErr = gkDbCon.GetUser(loginData.UserName)
if gkErr != nil {
if gkErr.GetErrorId() == database.ERROR_ID_NO_ROWS_FOUND {
var passwordSalt string
password = "******"
passwordSalt = "abc123QWE."
// make it take the same amount of time
// between no user and invalid password
passwordHashFromUser = sec.GenPasswordHashSlow([]byte(password), []byte(passwordSalt))
loginData.ErrorList = append(loginData.ErrorList, "invalid username/password")
loginData.UserNameError = genErrorMarker()
loginData.PasswordError = genErrorMarker()
gotError = true
} else {
gklog.LogGkErr("gkDbCon.GetPasswordHashAndSalt", gkErr)
redirectToError("gkDbCon.GetPasswordhashAndSalt", res, req)
return
}
}
}
if !gotError {
passwordHashFromUser = sec.GenPasswordHashSlow([]byte(password), []byte(dbUser.PasswordSalt))
gklog.LogTrace(fmt.Sprintf("dbUser: %v fromUser: %s", dbUser, passwordHashFromUser))
if dbUser.PasswordHash != string(passwordHashFromUser) {
loginData.ErrorList = append(loginData.ErrorList, "invalid username/password")
loginData.UserNameError = genErrorMarker()
loginData.PasswordError = genErrorMarker()
gotError = true
}
}
if gotError {
// for security, to slow down an attack that is guessing passwords,
// sleep between 100 and 190 milliseconds
time.Sleep(sec.GetSleepDurationPasswordInvalid())
gkErr = _loginTemplate.Build(loginData)
if gkErr != nil {
gklog.LogGkErr("_loginTemplate.Build", gkErr)
redirectToError("_loginTemplate.Build", res, req)
return
}
gkErr = _loginTemplate.Send(res, req)
if gkErr != nil {
gklog.LogGkErr("_loginTemplate.Send", gkErr)
return
}
} else {
gkErr = gkDbCon.UpdateUserLoginDate(dbUser.UserName)
if gkErr != nil {
// this error is going to be logged
// but the user is not going to be redirected to an error
// because they are going to be redirected to the game server
// and it is not critical that their login date be updated.
gklog.LogGkErr("_loginTemplate.Send", gkErr)
}
var gameRedirect string
gameRedirect, gkErr = getGameRedirect(loginConfig, loginData.UserName)
if gkErr != nil {
gklog.LogGkErr("getGameRedirect", gkErr)
return
}
http.Redirect(res, req, gameRedirect, http.StatusFound)
}
}
func handleLoginForgotPassword(loginConfig *loginConfigDef, res http.ResponseWriter, req *http.Request, userName string) {
var forgotPasswordData forgotPasswordDataDef
var gkErr *gkerr.GkErrDef
forgotPasswordData.Title = "forgotPassword"
forgotPasswordData.LoginWebAddressPrefix = loginConfig.LoginWebAddressPrefix
forgotPasswordData.UserName = userName
forgotPasswordData.ErrorList = make([]string, 0, 0)
var gotError bool
if userName == "" {
forgotPasswordData.ErrorList = append(forgotPasswordData.ErrorList, "user name cannot be blank")
forgotPasswordData.UserNameError = genErrorMarker()
gotError = true
}
var dbUser *database.DbUserDef
if !gotError {
var gkDbCon *database.GkDbConDef
gkDbCon, gkErr = database.NewGkDbCon(loginConfig.DatabaseUserName, loginConfig.DatabasePassword, loginConfig.DatabaseHost, loginConfig.DatabasePort, loginConfig.DatabaseDatabase)
if gkErr != nil {
gklog.LogGkErr("database.NewGkDbCon", gkErr)
redirectToError("database.NewGkDbCon", res, req)
return
}
defer gkDbCon.Close()
dbUser, gkErr = gkDbCon.GetUser(
forgotPasswordData.UserName)
if gkErr != nil {
if gkErr.GetErrorId() == database.ERROR_ID_NO_ROWS_FOUND {
forgotPasswordData.ErrorList = append(forgotPasswordData.ErrorList, "no such user")
forgotPasswordData.UserNameError = genErrorMarker()
gotError = true
} else {
gklog.LogGkErr("gbDbCon.GetUser", gkErr)
redirectToError("gbDbCon.GetUser", res, req)
return
}
}
}
var err error
if !gotError {
// create temporary forgot password token
//var token []byte
var forgotPasswordEmailData forgotPasswordEmailDataDef
forgotPasswordEmailData.LoginWebAddressPrefix = loginConfig.LoginWebAddressPrefix
forgotPasswordEmailData.UserName = userName
var token []byte
token, err = sec.GenForgotPasswordToken()
if err != nil {
gkErr = gkerr.GenGkErr("GenForgotPasswordToken", err, ERROR_ID_GEN_TOKEN)
gklog.LogGkErr("GenForgotPasswordToken", gkErr)
redirectToError("GenForgotPasswordToken", res, req)
return
}
forgotPasswordEmailData.Token = string(token)
gkErr = _forgotPasswordEmailTemplate.Build(forgotPasswordEmailData)
if gkErr != nil {
gklog.LogGkErr("_forgotPasswordEmailTemplate.Build", gkErr)
redirectToError("_forgotPasswordEmailTemplate.Build", res, req)
return
}
var message []byte
message, gkErr = _forgotPasswordEmailTemplate.GetBytes()
if gkErr != nil {
gklog.LogGkErr("_forgotPasswordEmailTemplate.GetBytes", gkErr)
redirectToError("_forgotPasswordEmailTemplate.GetBytes", res, req)
return
}
toArray := make([]string, 1, 1)
toArray[0] = dbUser.Email
var sendId string
AddNewToken(string(token), userName)
sendId, gkErr = gknet.SendEmail(loginConfig.EmailServer, loginConfig.ServerFromEmail, toArray, "gourdian knot forgotten password", message)
if gkErr != nil {
gklog.LogGkErr("gknet.SendEmail", gkErr)
} else {
gklog.LogTrace("forgot email sent to: " + toArray[0] + " sendId: [" + sendId + "]")
}
}
if gotError {
gkErr = _forgotPasswordTemplate.Build(forgotPasswordData)
if gkErr != nil {
gklog.LogGkErr("_forgotPasswordTemplate.Build", gkErr)
redirectToError("_forgotPasswordTemplate.Build", res, req)
return
}
gkErr = _forgotPasswordTemplate.Send(res, req)
if gkErr != nil {
gklog.LogGkErr("_forgotPasswordTemplate.send", gkErr)
}
} else {
http.Redirect(res, req, _loginServer, http.StatusFound)
}
}
func handleLoginResetPassword(loginConfig *loginConfigDef, res http.ResponseWriter, req *http.Request, token string, userName string, password string) {
var resetPasswordData resetPasswordDataDef
var gkErr *gkerr.GkErrDef
resetPasswordData.Title = "resetPassword"
resetPasswordData.LoginWebAddressPrefix = loginConfig.LoginWebAddressPrefix
resetPasswordData.Token = token
resetPasswordData.UserName = userName
if !CheckToken(token, userName) {
redirectToError("token expired", res, req)
return
}
gklog.LogTrace("reset password: "******"" {
gklog.LogTrace("password blank")
gkErr = _resetPasswordTemplate.Build(resetPasswordData)
if gkErr != nil {
gklog.LogGkErr("_resetPasswordTemplate.Build", gkErr)
redirectToError("_resetPasswordTemplate.Build", res, req)
return
}
gkErr = _resetPasswordTemplate.Send(res, req)
if gkErr != nil {
gklog.LogGkErr("_resetPasswordTemplate.send", gkErr)
}
return
}
var gkDbCon *database.GkDbConDef
gkDbCon, gkErr = database.NewGkDbCon(loginConfig.DatabaseUserName, loginConfig.DatabasePassword, loginConfig.DatabaseHost, loginConfig.DatabasePort, loginConfig.DatabaseDatabase)
if gkErr != nil {
gklog.LogGkErr("database.NewGkDbCon", gkErr)
redirectToError("database.NewGkDbCon", res, req)
return
}
defer gkDbCon.Close()
var passwordHash, passwordSalt []byte
var err error
passwordSalt, err = sec.GenSalt()
if err != nil {
gkErr = gkerr.GenGkErr("sec.GenSalt", err, ERROR_ID_GEN_SALT)
gklog.LogGkErr("sec.GenSalt", gkErr)
redirectToError("sec.GenSalt", res, req)
}
passwordHash = sec.GenPasswordHashSlow([]byte(password), passwordSalt)
gklog.LogTrace("change password")
gkDbCon.ChangePassword(userName, string(passwordHash), string(passwordSalt))
if gkErr != nil {
gklog.LogGkErr("gkDbCon.ChangePassword", gkErr)
redirectToError("gbDbCon.ChangePassword", res, req)
return
}
gklog.LogTrace("redirect to login")
http.Redirect(res, req, loginConfig.LoginWebAddressPrefix+_loginServer, http.StatusFound)
}