Changes

config/config.go

@@ -0,0 +1,21 @@
+package config
+
+var ServerName string = "Hoernschen's Matrix Server"
+var Version string = "0.1"
+
+var Homeserver string
+var Port string
+
+var PrivateKey []byte
+var PublicKey []byte
+var KeyId string
+var VerifyKeys map[string]map[string][]byte
+
+// Parameters for Mesurements
+// TODO: Implement correctly
+var Packetloss float32
+var UnavailableTill int
+var AuthentificationCheck bool
+var Signing bool
+var Encryption bool
+var HttpString string

entities/device/deviceDatabaseConnector.go

@@ -2,15 +2,16 @@ package device
 
 import (
 	"fmt"
+	"log"
 
 	"nutfactory.org/Matrix/utils/database"
 )
 
 func CreateDevice(device *Device, userId string) (err error) {
 	sqlStmt := fmt.Sprintf(`INSERT INTO device
-		(id, name, userId)
+		(id, name, accessToken, userId)
 		VALUES
-		(?, ?, ?)`)
+		(?, ?, ?, ?)`)
 
 	tx, err := database.DB.Begin()
 	if err != nil {
@@ -23,7 +24,7 @@ func CreateDevice(device *Device, userId string) (err error) {
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(device.Id, device.Name, userId)
+	_, err = stmt.Exec(device.Id, device.Name, device.AccessToken, userId)
 	if err != nil {
 		return
 	}
@@ -32,7 +33,7 @@ func CreateDevice(device *Device, userId string) (err error) {
 }
 
 func ReadDevice(id string) (foundDevice *Device, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, name 
+	queryStmt := fmt.Sprintf(`SELECT id, name, accessToken
 		FROM device
 		WHERE id = '%s'`, id)
 
@@ -45,7 +46,31 @@ func ReadDevice(id string) (foundDevice *Device, err error) {
 
 	if rows.Next() {
 		foundDevice = &Device{}
-		err = rows.Scan(&foundDevice.Id, &foundDevice.Name)
+		err = rows.Scan(&foundDevice.Id, &foundDevice.Name, &foundDevice.AccessToken)
+		if err != nil {
+			return
+		}
+		foundDevice.Keys, err = ReadKeysForDevice(foundDevice.Id)
+	}
+
+	return
+}
+
+func ReadDeviceFromAccessToken(accessToken string) (foundDevice *Device, err error) {
+	queryStmt := fmt.Sprintf(`SELECT id, name, accessToken
+		FROM device
+		WHERE accessToken = '%s'`, accessToken)
+	log.Printf(queryStmt)
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	if rows.Next() {
+		foundDevice = &Device{}
+		err = rows.Scan(&foundDevice.Id, &foundDevice.Name, &foundDevice.AccessToken)
 		if err != nil {
 			return
 		}
@@ -56,7 +81,7 @@ func ReadDevice(id string) (foundDevice *Device, err error) {
 }
 
 func ReadDevicesForUser(userId string) (devices map[string]*Device, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, name 
+	queryStmt := fmt.Sprintf(`SELECT id, name, accessToken 
 		FROM device
 		WHERE userId = '%s'`, userId)
 
@@ -71,7 +96,7 @@ func ReadDevicesForUser(userId string) (devices map[string]*Device, err error) {
 
 	for rows.Next() {
 		foundDevice := &Device{}
-		err = rows.Scan(&foundDevice.Id, &foundDevice.Name)
+		err = rows.Scan(&foundDevice.Id, &foundDevice.Name, &foundDevice.AccessToken)
 		if err != nil {
 			return
 		}
@@ -82,10 +107,10 @@ func ReadDevicesForUser(userId string) (devices map[string]*Device, err error) {
 	return
 }
 
-func UpdateDevice(device *Device, userId string) (err error) {
+func UpdateDevice(device *Device) (err error) {
 	sqlStmt := fmt.Sprintf(`UPDATE device SET
 			name = ?,
-			userId = ?
+			accessToken = ?
 		WHERE id = ?`)
 
 	tx, err := database.DB.Begin()
@@ -99,7 +124,7 @@ func UpdateDevice(device *Device, userId string) (err error) {
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(device.Name, userId, device.Id)
+	_, err = stmt.Exec(device.Name, device.AccessToken, device.Id)
 	if err != nil {
 		return
 	}

entities/device/key.go

@@ -3,5 +3,18 @@ package device
 type Key struct {
 	Id   string `json:"id,omitempty"`
 	Type string `json:"type,omitempty"`
-	Key  string `json:"key,omitempty"`
+	Key  []byte `json:"key,omitempty"`
+}
+
+type serverKeys struct {
+	ServerName    string                       `json:"server_name,omitempty"`
+	VerifyKeys    map[string]verifyKey         `json:"verify_keys,omitempty"`
+	OldVerifyKeys map[string]verifyKey         `json:"old_verify_keys,omitempty"`
+	Signatures    map[string]map[string]string `json:"signatures,omitempty"`
+	ValidUntil    int64                        `json:"valid_until_ts,omitempty"`
+}
+
+type verifyKey struct {
+	Key     string `json:"key,omitempty"`
+	Expired int64  `json:"expired_ts,omitempty"`
 }

entities/device/keyController.go

@@ -0,0 +1,76 @@
+package device
+
+import (
+	"encoding/json"
+	"fmt"
+	"net/http"
+
+	"nutfactory.org/Matrix/config"
+	"nutfactory.org/Matrix/utils"
+)
+
+func InitServerSigningKey() (err error) {
+	publicKey, privateKey, err := utils.GenerateKeyPair()
+	if err != nil {
+		return
+	}
+	config.PublicKey = publicKey
+	config.PrivateKey = privateKey
+	config.KeyId = "ed25519:1"
+	return
+}
+
+func GetServerSigningKeyHandler(w http.ResponseWriter, r *http.Request) {
+	if config.PublicKey == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Server Signing Key Missing"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := serverKeys{
+		ServerName: config.Homeserver,
+		VerifyKeys: make(map[string]verifyKey),
+	}
+	response.VerifyKeys[config.KeyId] = verifyKey{Key: string(config.PublicKey)}
+	content, err := json.Marshal(response)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error creating Signatures: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	response.Signatures = utils.SignContent(content)
+
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func getVerifyKey(server string, id string) (key []byte, err error) {
+	if val, ok := config.VerifyKeys[server][id]; ok {
+		key = val
+	} else {
+		httpString := "https"
+		requestUrl := fmt.Sprintf("%s://%s/_matrix/key/v2/server", httpString, server)
+		var res *http.Response
+		res, err = http.Get(requestUrl)
+		if err != nil {
+			return
+		}
+		serverKeyRes := serverKeys{}
+		decoder := json.NewDecoder(res.Body)
+		err = decoder.Decode(&serverKeyRes)
+		config.VerifyKeys[server] = make(map[string][]byte)
+		for keyId, verifyKey := range serverKeyRes.VerifyKeys {
+			config.VerifyKeys[server][keyId] = []byte(verifyKey.Key)
+			if id == keyId {
+				key = []byte(verifyKey.Key)
+			}
+		}
+	}
+	return
+}

entities/event/edu.go

@@ -1,8 +0,0 @@
-package event
-
-// TODO: Check if it can be deleted
-
-type EDU struct {
-	Type    string `json:"type,omitempty"`
-	Content string `json:"content,omitempty"`
-}

entities/event/event.go

@@ -1,10 +1,123 @@
 package event
 
 type Event struct {
-	Id        string `json:"id,omitempty"`
+	Id              string                       `json:"event_id,omitempty"`
-	RoomId    string `json:"roomId,omitempty"`
+	RoomId          string                       `json:"room_id,omitempty"`
-	EventType string `json:"eventType,omitempty"`
+	Sender          string                       `json:"sender,omitempty"`
-	Content   string `json:"content,omitempty"`
+	Origin          string                       `json:"origin,omitempty"`
-	ParentId  string `json:"parent,omitempty"`
+	Timestamp       int64                        `json:"origin_server_ts,omitempty"`
-	Depth     int    `json:"depth,omitempty"`
+	EventType       string                       `json:"type,omitempty"`
+	StateKey        string                       `json:"state_key,omitempty"`
+	Content         string                       `json:"content,omitempty"`
+	PrevEventHashes map[string]EventHash         `json:"prev_events,omitempty"`
+	Depth           int                          `json:"depth,omitempty"`
+	AuthEventHashes map[string]EventHash         `json:"auth_events,omitempty"`
+	Unsigned        UnsignedData                 `json:"unsigned,omitempty"`
+	Hashes          EventHash                    `json:"hashes,omitempty"`
+	Signatures      map[string]map[string]string `json:"signatures,omitempty"`
+}
+
+type StateEvent struct {
+	EventType string `json:"type,omitempty"`
+	StateKey  string `json:"state_key,omitempty"`
+	Content   string `json:"content,omitempty"`
+}
+
+type UnsignedData struct {
+	Age             int    `json:"age,omitempty"`
+	TransactionId   string `json:"transaction_id,omitempty"`
+	ReplaceState    string `json:"replaces_state,omitempty"`
+	PrevSender      string `json:"prev_sender,omitempty"`
+	PrevContent     string `json:"prev_content,omitempty"`
+	RedactedBecause string `json:"redacted_because,omitempty"`
+}
+
+type EventHash struct {
+	SHA256 string `json:"sha256,omitempty"`
+}
+
+type CreateEventContent struct {
+	Creator     string `json:"creator,omitempty"`
+	Federated   bool   `json:"m.federate,omitempty"`
+	RoomVersion string `json:"room_version,omitempty"`
+}
+
+type JoinRuleEventContent struct {
+	JoinRule string `json:"join_rule,omitempty"`
+}
+
+type HistoryVisibilityEventContent struct {
+	HistoryVisibility string `json:"history_visibility,omitempty"`
+}
+
+type GuestAccessEventContent struct {
+	GuestAccess string `json:"guest_access,omitempty"`
+}
+
+type NameEventContent struct {
+	Name string `json:"name,omitempty"`
+}
+
+type TopicEventContent struct {
+	Topic string `json:"topic,omitempty"`
+}
+
+type MemberEventContent struct {
+	AvatarUrl   string `json:"avatar_url,omitempty"`
+	DisplayName string `json:"displayname,omitempty"`
+	Membership  string `json:"membership,omitempty"`
+	IsDirect    bool   `json:"is_direct,omitempty"`
+}
+
+type PowerLevelsEventContent struct {
+	Ban           int            `json:"ban,omitempty"`
+	Events        map[string]int `json:"events,omitempty"`
+	EventsDefault int            `json:"events_default,omitempty"`
+	Invite        int            `json:"invite,omitempty"`
+	Kick          int            `json:"kick,omitempty"`
+	Redact        int            `json:"redact,omitempty"`
+	StateDefault  int            `json:"state_default,omitempty"`
+	Users         map[string]int `json:"users,omitempty"`
+	UsersDefault  int            `json:"users_default,omitempty"`
+	Notifications Notifications  `json:"notifications,omitempty"`
+}
+
+type Notifications struct {
+	Room int `json:"room,omitempty"`
+}
+
+type sendMessageRequest struct {
+	MessageType string `json:"msgtype,omitempty"`
+	Body        string `json:"body,omitempty"`
+}
+
+type createEventResponse struct {
+	EventId string `json:"event_id,omitempty"`
+}
+
+type getEventRequest struct{}
+
+type getEventResponse struct {
+	Content   string `json:"content,omitempty"`
+	EventType string `json:"type,omitempty"`
+}
+
+type syncEventsServerRequest struct {
+	Origin    string   `json:"origin,omitempty"`
+	Timestamp int64    `json:"origin_server_ts,omitempty"`
+	PDUs      []*Event `json:"pdus,omitempty"`
+}
+
+type syncEventsServerResponse struct {
+	PDUs map[string]pduProcessingResult `json:"pdus,omitempty"`
+}
+
+type backfillResponse struct {
+	Origin    string   `json:"origin,omitempty"`
+	Timestamp int64    `json:"origin_server_ts,omitempty"`
+	PDUs      []*Event `json:"pdus,omitempty"`
+}
+
+type pduProcessingResult struct {
+	ProcessingError string `json:"error,omitempty"`
 }

entities/event/eventController.go

@@ -1,5 +1,803 @@
 package event
 
-func New() (event *Event) {
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strconv"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"github.com/gorilla/mux"
+	"nutfactory.org/Matrix/config"
+	"nutfactory.org/Matrix/entities/device"
+	"nutfactory.org/Matrix/entities/user"
+	"nutfactory.org/Matrix/utils"
+)
+
+func New(
+	roomId string,
+	sender string,
+	origin string,
+	timestamp int64,
+	eventType string,
+	stateKey string,
+	content string,
+	txnId string,
+) (err error, newEvent *Event) {
+	err, eventId := utils.CreateUUID()
+	if err != nil {
+		return
+	}
+	id := generateEventId(eventId)
+	newEvent = &Event{
+		Id:        id,
+		RoomId:    roomId,
+		Sender:    sender,
+		Origin:    origin,
+		Timestamp: timestamp,
+		EventType: eventType,
+		StateKey:  stateKey,
+		Content:   content,
+		Unsigned: UnsignedData{
+			TransactionId: txnId,
+		},
+	}
+	newEvent.AuthEventHashes, err = GetAuthEvents(newEvent)
+	if err != nil {
+		return
+	}
+	if eventType != "m.room.create" {
+		var depth int
+		newEvent.PrevEventHashes, depth, err = ReadEventsWithoutChild(roomId)
+		if err != nil {
+			return
+		}
+		newEvent.Depth = depth + 1
+	}
+
+	newEvent.AuthEventHashes, err = GetAuthEvents(newEvent)
+	if err != nil {
+		return
+	}
+
+	newEventBytesForHash, err := json.Marshal(newEvent)
+	if err != nil {
+		return
+	}
+	err, newEvent.Hashes.SHA256 = utils.Hash(newEventBytesForHash)
+	if err != nil {
+		return
+	}
+	newEvent.Unsigned = UnsignedData{}
+	newEventBytesForSign, err := json.Marshal(newEvent)
+	if err != nil {
+		return
+	}
+	newEvent.Signatures = utils.SignContent(newEventBytesForSign)
+	newEvent.Unsigned = UnsignedData{
+		TransactionId: txnId,
+	}
+	return
+}
+
+func SendMessageHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := sendMessageRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	eventType := vars["eventType"]
+	txnId := vars["txnId"]
+	if roomId == "" || eventType == "" || txnId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(r.Body)
+	content := buf.String()
+	err, newEvent := New(
+		roomId,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		eventType,
+		foundUser.Id,
+		content,
+		txnId,
+	)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Creating Event: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	err = CreateEvent(newEvent, txnId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	transaction := &Transaction{
+		Id:        txnId,
+		Origin:    config.Homeserver,
+		Timestamp: time.Now().Unix(),
+		PDUS:      []*Event{newEvent},
+	}
+	servers, err := ReadServers(roomId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	for _, server := range servers {
+		operation := func() error {
+			return SendTransaction(transaction, server)
+		}
+		notify := func(err error, duration time.Duration) {
+			log.Printf("Error Sending Transaction, retrying in %ss: %s", duration/1000000000, err)
+		}
+		go backoff.RetryNotify(operation, backoff.NewExponentialBackOff(), notify)
+	}
+	response := createEventResponse{
+		EventId: newEvent.Id,
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func CreateStateEventHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	eventType := vars["eventType"]
+	stateKey := vars["stateKey"]
+	if roomId == "" || eventType == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(r.Body)
+	content := buf.String()
+	err, newEvent := New(
+		roomId,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		eventType,
+		stateKey,
+		content,
+		"",
+	)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Creating Event: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	err = CreateEvent(newEvent, "")
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	err, txnId := utils.CreateUUID()
+	transaction := &Transaction{
+		Id:        txnId,
+		Origin:    config.Homeserver,
+		Timestamp: time.Now().Unix(),
+		PDUS:      []*Event{newEvent},
+	}
+	servers, err := ReadServers(roomId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	for _, server := range servers {
+		operation := func() error {
+			return SendTransaction(transaction, server)
+		}
+		notify := func(err error, duration time.Duration) {
+			log.Printf("Error Sending Transaction, retrying in %ss: %s", duration/1000000000, err)
+		}
+		go backoff.RetryNotify(operation, backoff.NewExponentialBackOff(), notify)
+	}
+
+	response := createEventResponse{
+		EventId: newEvent.Id,
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func GetEventUserHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := getEventRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	eventId := vars["eventId"]
+	if roomId == "" || eventId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundEvent, err := ReadEvent(eventId)
+	if err != nil || foundEvent == nil {
+		w.WriteHeader(http.StatusNotFound)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_NOT_FOUND", ErrorMessage: fmt.Sprintf("Event not found. %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := getEventResponse{
+		Content:   foundEvent.Content,
+		EventType: foundEvent.EventType,
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func GetStateEventHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	eventType := vars["eventType"]
+	stateKey := vars["stateKey"]
+	if roomId == "" || eventType == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundEvent, err := ReadStateEvent(roomId, eventType, stateKey)
+	if err != nil || foundEvent == nil {
+		w.WriteHeader(http.StatusNotFound)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_NOT_FOUND", ErrorMessage: fmt.Sprintf("Event not found. %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(foundEvent.Content); err != nil {
+		panic(err)
+	}
+}
+
+func SyncEventsServerHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := syncEventsServerRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	errResponse = utils.CheckAuthHeader(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	txnId := vars["txnId"]
+	if txnId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := syncEventsServerResponse{
+		PDUs: make(map[string]pduProcessingResult),
+	}
+	missingEventIds := make(map[string][]string)
+	for _, pdu := range request.PDUs {
+		signatureValid := CheckSignature(*pdu)
+		if !signatureValid {
+			log.Printf("Wrong Signature for Event %s", pdu.Id)
+			response.PDUs[pdu.Id] = pduProcessingResult{ProcessingError: "Signature not valid"}
+			continue
+		}
+		authEventsValid, err := CheckAuthEvents(pdu)
+		if !authEventsValid || err != nil {
+			log.Printf("Wrong Auth Events for Event %s", pdu.Id)
+			response.PDUs[pdu.Id] = pduProcessingResult{ProcessingError: fmt.Sprintf("Error in Auth Check: %s", err)}
+			//continue
+		}
+		missingParentIds, err := CheckParents(pdu)
+		if len(missingParentIds) > 0 || err != nil {
+			response.PDUs[pdu.Id] = pduProcessingResult{ProcessingError: fmt.Sprintf("Error in Parents Check: %s", err)}
+			for _, parentId := range missingParentIds {
+				missingEventIds[pdu.RoomId] = append(missingEventIds[pdu.RoomId], parentId)
+			}
+		}
+		foundEvent, err := ReadEvent(pdu.Id)
+		if foundEvent == nil && err == nil {
+			err = CreateEvent(pdu, txnId)
+		}
+		if err != nil {
+			response.PDUs[pdu.Id] = pduProcessingResult{ProcessingError: fmt.Sprintf("Database Error: %s", err)}
+			continue
+		}
+
+		err = HandleEvent(pdu)
+		if err != nil {
+			response.PDUs[pdu.Id] = pduProcessingResult{ProcessingError: fmt.Sprintf("Error in Event-Handling: %s", err)}
+			continue
+		}
+
+		response.PDUs[pdu.Id] = pduProcessingResult{}
+	}
+
+	if len(missingEventIds) > 0 {
+		for roomId, eventIds := range missingEventIds {
+			operation := func() error {
+				return Backfill(eventIds, roomId, request.Origin)
+			}
+			notify := func(err error, duration time.Duration) {
+				log.Printf("Error Backfill, retrying in %s: %s", duration/1000000000, err)
+			}
+			go backoff.RetryNotify(operation, backoff.NewExponentialBackOff(), notify)
+		}
+	}
+
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func BackfillHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+
+	errResponse := utils.CheckAuthHeader(r)
+
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	if roomId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	limit := 50
+	eventIds, ok := r.URL.Query()["v"]
+	log.Printf("%s", eventIds)
+	if !ok || eventIds[0] == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	limitString := r.URL.Query().Get("limit")
+	if limitString != "" {
+		limit, _ = strconv.Atoi(limitString)
+	}
+	pdus := []*Event{}
+	for len(pdus) < limit {
+		newEventIds := []string{}
+		for _, eventId := range eventIds {
+			foundEvent, err := ReadEvent(eventId)
+			if err != nil || foundEvent == nil {
+				w.WriteHeader(http.StatusBadRequest)
+				if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Event not found"}); err != nil {
+					panic(err)
+				}
+				return
+			}
+
+			for newEventId, _ := range foundEvent.PrevEventHashes {
+				newEventIds = append(newEventIds, newEventId)
+			}
+			pdus = append(pdus, foundEvent)
+		}
+		eventIds = newEventIds
+	}
+	response := backfillResponse{
+		Origin:    config.Homeserver,
+		Timestamp: time.Now().Unix(),
+		PDUs:      pdus,
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func SendTransaction(transaction *Transaction, homeserver string) (err error) {
+	requestUrl := fmt.Sprintf("https://%s/_matrix/federation/v1/send/%s?", homeserver, transaction.Id)
+	request := syncEventsServerRequest{
+		Origin:    transaction.Origin,
+		Timestamp: transaction.Timestamp,
+		PDUs:      transaction.PDUS,
+	}
+	reqBody, err := json.Marshal(request)
+	if err != nil {
+		return
+	}
+	client := &http.Client{}
+	req, err := http.NewRequest(http.MethodPut, requestUrl, bytes.NewBuffer(reqBody))
+	if err != nil {
+		return
+	}
+	_, err = client.Do(req)
+	return
+}
+
+func Backfill(eventIds []string, roomId string, homeserver string) (err error) {
+	requestUrl := fmt.Sprintf("https://%s/_matrix/federation/v1/backfill/%s?", homeserver, roomId)
+	for _, eventId := range eventIds {
+		requestUrl = fmt.Sprintf("%sv=%s&", requestUrl, eventId)
+	}
+	r, err := http.Get(requestUrl)
+	if err != nil {
+		return
+	}
+	response := backfillResponse{}
+	defer r.Body.Close()
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&response)
+	if err != nil {
+		return
+	}
+	var missingEventIds []string
+	for _, pdu := range response.PDUs {
+		for i, eventId := range missingEventIds {
+			if pdu.Id == eventId {
+				missingEventIds = append(missingEventIds[:i], missingEventIds[i+1:]...)
+			}
+		}
+		signatureValid := CheckSignature(*pdu)
+		if !signatureValid {
+			log.Printf("Wrong Signature for Event %s", pdu.Id)
+			missingEventIds = append(missingEventIds, pdu.Id)
+			continue
+		}
+		authEventsValid, err := CheckAuthEvents(pdu)
+		if !authEventsValid || err != nil {
+			log.Printf("Wrong Auth Events for Event %s", pdu.Id)
+			missingEventIds = append(missingEventIds, pdu.Id)
+			continue
+		}
+		missingParentIds, err := CheckParents(pdu)
+		if len(missingParentIds) > 0 || err != nil {
+			for _, parentId := range missingParentIds {
+				missingEventIds = append(missingEventIds, parentId)
+			}
+		}
+		foundEvent, err := ReadEvent(pdu.Id)
+		if foundEvent == nil && err == nil {
+			err = CreateEvent(pdu, "")
+		}
+		if err != nil {
+			continue
+		}
+		err = HandleEvent(pdu)
+		if err != nil {
+			log.Printf("Error in Event-Handling: %s", err)
+			continue
+		}
+	}
+
+	if len(missingEventIds) > 0 {
+		Backfill(missingEventIds, roomId, homeserver)
+	}
+
+	return
+}
+
+func generateEventId(id string) string {
+	return fmt.Sprintf("$%s:%s", id, config.Homeserver)
+}
+
+func GetAuthChain(newEvent *Event) (authChain []*Event, err error) {
+	createEvent, err := ReadStateEvent(newEvent.RoomId, "m.room.create", "")
+	if err != nil {
+		return
+	}
+	if createEvent != nil {
+		authChain = append(authChain, createEvent)
+	}
+
+	powerLevelEvent, err := ReadStateEvent(newEvent.RoomId, "m.room.power_levels", "")
+	if err != nil {
+		return
+	}
+	if powerLevelEvent != nil {
+		authChain = append(authChain, powerLevelEvent)
+	}
+
+	stateKey := newEvent.Sender
+	if newEvent.EventType == "m.room.member" {
+		stateKey = newEvent.StateKey
+	}
+
+	memberEvent, err := ReadStateEvent(newEvent.RoomId, "m.room.member", stateKey)
+	if err != nil {
+		return
+	}
+	if memberEvent != nil {
+		authChain = append(authChain, memberEvent)
+	}
+
+	joinRuleEvent, err := ReadStateEvent(newEvent.RoomId, "m.room.join_rules", "")
+	if err != nil {
+		return
+	}
+	if joinRuleEvent != nil && newEvent.EventType == "m.room.member" {
+		authChain = append(authChain, joinRuleEvent)
+	}
+
+	return
+}
+
+func GetAuthEvents(newEvent *Event) (authEventHashes map[string]EventHash, err error) {
+	authEventHashes = make(map[string]EventHash)
+
+	authChain, err := GetAuthChain(newEvent)
+	if err != nil {
+		return
+	}
+
+	for _, authEvent := range authChain {
+		authEventHashes[authEvent.Id] = authEvent.Hashes
+	}
+
+	return
+}
+
+func CheckEventHash(id string, hash EventHash) (correct bool, eventFound bool, err error) {
+	foundEvent, err := ReadEvent(id)
+	correct = true
+	eventFound = true
+	if err != nil {
+		return
+	}
+	if foundEvent == nil {
+		eventFound = false
+		return
+	}
+	if hash.SHA256 != foundEvent.Hashes.SHA256 {
+		correct = false
+		return
+	}
+	return
+}
+
+func CheckParents(eventToCheck *Event) (missingParentIds []string, err error) {
+	for key, hash := range eventToCheck.PrevEventHashes {
+		correctHash, foundEvent, err := CheckEventHash(key, hash)
+		if !correctHash || !foundEvent || err != nil {
+			missingParentIds = append(missingParentIds, key)
+		}
+	}
+	return
+}
+
+func CheckAuthEvents(eventToCheck *Event) (correct bool, err error) {
+	correct = true
+	authEvents, err := GetAuthEvents(eventToCheck)
+	if err != nil {
+		return
+	}
+	for key, hash := range authEvents {
+		if eventToCheck.AuthEventHashes[key].SHA256 != hash.SHA256 {
+			correct = false
+			return
+		}
+	}
+	return
+}
+
+func CheckSignature(eventToCheck Event) (correct bool) {
+	correct = false
+	signatures := eventToCheck.Signatures
+	eventToCheck.Unsigned = UnsignedData{}
+	eventToCheck.Signatures = nil
+	jsonString, err := json.Marshal(eventToCheck)
+	if err != nil {
+		return
+	}
+	for id, signature := range signatures[eventToCheck.Sender] {
+		key, err := device.ReadKey(id)
+		if err == nil {
+			correct = utils.VerifySignature([]byte(key.Key), jsonString, []byte(signature))
+		}
+	}
+	return
+}
+
+func HandleEvents(events []*Event) (err error) {
+	for _, eventToHandle := range events {
+		err = HandleEvent(eventToHandle)
+	}
+	return
+}
+
+func HandleEvent(eventToHandle *Event) (err error) {
+	if eventToHandle.EventType == "m.room.message" {
+		message := sendMessageRequest{}
+		err = json.Unmarshal([]byte(eventToHandle.Content), &message)
+		if err != nil {
+			return
+		}
+		if message.MessageType != "" && message.MessageType == "m.text" {
+			log.Printf("%s: %s", eventToHandle.Sender, message.Body)
+		}
+	} else if eventToHandle.EventType == "m.room.member" {
+		message := MemberEventContent{}
+		err = json.Unmarshal([]byte(eventToHandle.Content), &message)
+		if err != nil {
+			return
+		}
+		if message.Membership == "join" {
+			CreateRoomMember(eventToHandle.RoomId, eventToHandle.StateKey)
+		}
+	}
 	return
 }

entities/event/eventDatabaseConnector.go

@@ -2,15 +2,16 @@ package event
 
 import (
 	"fmt"
+	"strings"
 
 	"nutfactory.org/Matrix/utils/database"
 )
 
-func CreateEvent(event *Event, txnId string) (err error) {
+func CreateRoomMember(roomId string, userId string) (err error) {
-	sqlStmt := fmt.Sprintf(`INSERT INTO event
+	sqlStmt := fmt.Sprintf(`INSERT INTO roomMember
-		(id, roomId, txnId, eventType, content, parentId, depth)
+		(roomId, userId, server)
 		VALUES
-		(?, ?, ?, ?, ?, ?, ?)`)
+		(?, ?, ?)`)
 
 	tx, err := database.DB.Begin()
 	if err != nil {
@@ -23,7 +24,7 @@ func CreateEvent(event *Event, txnId string) (err error) {
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(event.Id, event.RoomId, txnId, event.EventType, event.Content, event.ParentId, event.Depth)
+	_, err = stmt.Exec(roomId, userId, strings.Split(userId, ":")[1])
 	if err != nil {
 		return
 	}
@@ -31,11 +32,129 @@ func CreateEvent(event *Event, txnId string) (err error) {
 	return
 }
 
+func CreateParents(eventId string, parentIds map[string]EventHash) (err error) {
+	sqlStmt := fmt.Sprintf(`INSERT INTO parent
+		(eventId, parentId)
+		VALUES
+		(?, ?)`)
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		return
+	}
+
+	stmt, err := tx.Prepare(sqlStmt)
+	if err != nil {
+		return
+	}
+	defer stmt.Close()
+
+	for parentId, _ := range parentIds {
+		_, err = stmt.Exec(
+			eventId,
+			parentId,
+		)
+		if err != nil {
+			return
+		}
+	}
+
+	tx.Commit()
+
+	return
+}
+
+func CreateAuthEvents(eventId string, authEventIds map[string]EventHash) (err error) {
+	sqlStmt := fmt.Sprintf(`INSERT INTO authEvent
+		(eventId, authEventId)
+		VALUES
+		(?, ?)`)
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		return
+	}
+
+	stmt, err := tx.Prepare(sqlStmt)
+	if err != nil {
+		return
+	}
+	defer stmt.Close()
+
+	for authEventId, _ := range authEventIds {
+		_, err = stmt.Exec(
+			eventId,
+			authEventId,
+		)
+		if err != nil {
+			return
+		}
+	}
+
+	tx.Commit()
+
+	return
+}
+
+func CreateEvent(event *Event, txnId string) (err error) {
+	sqlStmt := fmt.Sprintf(`INSERT INTO event
+		(id, roomId, txnId, sender, origin, timestamp, eventType, stateKey, content, depth, hash, signature)
+		VALUES
+		(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`)
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		return
+	}
+
+	stmt, err := tx.Prepare(sqlStmt)
+	if err != nil {
+		return
+	}
+	defer stmt.Close()
+
+	signatures := ""
+	for _, signature := range event.Signatures[event.Origin] {
+		signatures = signature
+	}
+
+	_, err = stmt.Exec(
+		event.Id,
+		event.RoomId,
+		txnId,
+		event.Sender,
+		event.Origin,
+		event.Timestamp,
+		event.EventType,
+		event.StateKey,
+		event.Content,
+		event.Depth,
+		event.Hashes.SHA256,
+		signatures,
+	)
+	if err != nil {
+		return
+	}
+	tx.Commit()
+
+	err = CreateParents(event.Id, event.PrevEventHashes)
+	if err != nil {
+		return
+	}
+
+	err = CreateAuthEvents(event.Id, event.AuthEventHashes)
+	if err != nil {
+		return
+	}
+
+	return
+}
+
 func CreateEventsFromTransaction(txnId string, pdus map[string]*Event) (err error) {
 	sqlStmt := fmt.Sprintf(`INSERT INTO event
-		(id, roomId, txnId, eventType, content, parentId, depth)
+		(id, roomId, txnId, sender, origin, timestamp, eventType, stateKey, content, depth, hash, signature)
 		VALUES
-		(?, ?, ?, ?, ?, ?, ?)`)
+		(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)`)
 
 	tx, err := database.DB.Begin()
 	if err != nil {
@@ -49,7 +168,35 @@ func CreateEventsFromTransaction(txnId string, pdus map[string]*Event) (err erro
 	defer stmt.Close()
 
 	for _, pdu := range pdus {
-		_, err = stmt.Exec(pdu.Id, pdu.RoomId, txnId, pdu.EventType, pdu.Content, pdu.ParentId, pdu.Depth)
+		signatures := ""
+		for _, signature := range pdu.Signatures[pdu.Origin] {
+			signatures = signature
+		}
+
+		_, err = stmt.Exec(
+			pdu.Id,
+			pdu.RoomId,
+			txnId,
+			pdu.Sender,
+			pdu.Origin,
+			pdu.Timestamp,
+			pdu.EventType,
+			pdu.StateKey,
+			pdu.Content,
+			pdu.Depth,
+			pdu.Hashes.SHA256,
+			signatures,
+		)
+		if err != nil {
+			return
+		}
+
+		err = CreateParents(pdu.Id, pdu.PrevEventHashes)
+		if err != nil {
+			return
+		}
+
+		err = CreateAuthEvents(pdu.Id, pdu.AuthEventHashes)
 		if err != nil {
 			return
 		}
@@ -59,8 +206,186 @@ func CreateEventsFromTransaction(txnId string, pdus map[string]*Event) (err erro
 	return
 }
 
+func ReadEventHash(id string) (hash string, err error) {
+	queryStmt := fmt.Sprintf(`SELECT hash 
+		FROM event
+		WHERE id = '%s'`, id)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	if rows.Next() {
+		err = rows.Scan(hash)
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+func ReadRoomMembers(roomId string) (roomMembers []string, err error) {
+	queryStmt := fmt.Sprintf(`SELECT userId
+		FROM roomMember
+		WHERE roomId = '%s'`, roomId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	roomMembers = []string{}
+
+	for rows.Next() {
+		var foundUser string
+		err = rows.Scan(&foundUser)
+		if err != nil {
+			return
+		}
+		roomMembers = append(roomMembers, foundUser)
+	}
+
+	return
+}
+
+func ReadServers(roomId string) (servers []string, err error) {
+	queryStmt := fmt.Sprintf(`SELECT DISTINCT server
+		FROM roomMember
+		WHERE roomId = '%s'`, roomId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	servers = []string{}
+
+	for rows.Next() {
+		var foundUser string
+		err = rows.Scan(&foundUser)
+		if err != nil {
+			return
+		}
+		servers = append(servers, foundUser)
+	}
+
+	return
+}
+
+func ReadParents(eventId string) (parents map[string]EventHash, err error) {
+	queryStmt := fmt.Sprintf(`SELECT e.id, e.hash 
+		FROM event as e
+		join parent as p on e.id = p.parentId
+		WHERE p.eventId = '%s'`, eventId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	parents = make(map[string]EventHash)
+
+	for rows.Next() {
+		var eventId string
+		var foundEvent EventHash
+
+		err = rows.Scan(&eventId,
+			&foundEvent.SHA256,
+		)
+
+		if err != nil {
+			return
+		}
+
+		parents[eventId] = foundEvent
+	}
+
+	return
+}
+
+func ReadEventsWithoutChild(roomId string) (events map[string]EventHash, depth int, err error) {
+	queryStmt := fmt.Sprintf(`SELECT e.id, e.hash, e.depth
+		FROM event as e
+		LEFT JOIN parent as p on e.id = p.parentId
+		WHERE p.eventId IS NULL AND e.roomId = '%s'`, roomId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	events = make(map[string]EventHash)
+
+	for rows.Next() {
+		var eventId string
+		var foundEvent EventHash
+		var foundDepth int
+		err = rows.Scan(&eventId,
+			&foundEvent.SHA256,
+			&foundDepth,
+		)
+
+		if foundDepth > depth {
+			depth = foundDepth
+		}
+
+		if err != nil {
+			return
+		}
+
+		events[eventId] = foundEvent
+	}
+
+	return
+}
+
+func ReadAuthEvents(eventId string) (authEvents map[string]EventHash, err error) {
+	queryStmt := fmt.Sprintf(`SELECT e.id, e.hash 
+		FROM event as e
+		join authEvent as a on e.id = a.authEventId
+		WHERE a.eventId = '%s'`, eventId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	authEvents = make(map[string]EventHash)
+
+	for rows.Next() {
+		var eventId string
+		var foundEvent EventHash
+
+		err = rows.Scan(&eventId,
+			&foundEvent.SHA256,
+		)
+
+		if err != nil {
+			return
+		}
+
+		authEvents[eventId] = foundEvent
+	}
+
+	return
+}
+
 func ReadEvent(id string) (foundEvent *Event, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, roomId, eventType, content, parentId, depth 
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature
 		FROM event
 		WHERE id = '%s'`, id)
 
@@ -73,13 +398,34 @@ func ReadEvent(id string) (foundEvent *Event, err error) {
 
 	if rows.Next() {
 		foundEvent = &Event{}
+		var signature string
 		err = rows.Scan(&foundEvent.Id,
 			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
 			&foundEvent.EventType,
 			&foundEvent.Content,
-			&foundEvent.ParentId,
 			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
 		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
+		if err != nil {
+			return
+		}
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
 		if err != nil {
 			return
 		}
@@ -88,8 +434,120 @@ func ReadEvent(id string) (foundEvent *Event, err error) {
 	return
 }
 
+func ReadStateEvent(roomId string, eventType string, stateKey string) (foundEvent *Event, err error) {
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
+		FROM event
+		WHERE roomId = '%s' 
+		AND eventType = '%s'
+		AND stateKey = '%s'`, roomId, eventType, stateKey)
+
+	if stateKey == "" {
+		queryStmt = fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
+			FROM event
+			WHERE roomId = '%s' 
+			AND eventType = '%s'`, roomId, eventType)
+	}
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	if rows.Next() {
+		foundEvent = &Event{}
+		var signature string
+		err = rows.Scan(&foundEvent.Id,
+			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
+			&foundEvent.EventType,
+			&foundEvent.Content,
+			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
+		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
+		if err != nil {
+			return
+		}
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+	}
+
+	return
+}
+
+func ReadStateEvents(roomId string, eventType string) (foundEvents []*Event, err error) {
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
+		FROM event
+		WHERE roomId = '%s' 
+		AND eventType = '%s'`, roomId, eventType)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	for rows.Next() {
+		foundEvent := &Event{}
+		var signature string
+		err = rows.Scan(&foundEvent.Id,
+			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
+			&foundEvent.EventType,
+			&foundEvent.Content,
+			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
+		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
+		if err != nil {
+			return
+		}
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvents = append(foundEvents, foundEvent)
+	}
+
+	return
+}
+
 func ReadEventsFromRoom(roomId string) (events map[string]*Event, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, roomId, eventType, content, parentId, depth 
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
 		FROM event
 		WHERE roomId = '%s'`, roomId)
 
@@ -104,24 +562,98 @@ func ReadEventsFromRoom(roomId string) (events map[string]*Event, err error) {
 
 	for rows.Next() {
 		foundEvent := &Event{}
+		var signature string
 		err = rows.Scan(&foundEvent.Id,
 			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
 			&foundEvent.EventType,
 			&foundEvent.Content,
-			&foundEvent.ParentId,
 			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
 		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
 		if err != nil {
 			return
 		}
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
 		events[foundEvent.Id] = foundEvent
 	}
 
 	return
 }
 
-func ReadEventsFromTransaction(txnId string) (events map[string]*Event, err error) {
+func ReadStateEventsFromRoom(roomId string) (events []*Event, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, roomId, eventType, content, parentId, depth 
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
+		FROM event
+		WHERE eventType <> 'm.room.message' AND roomId = '%s'`, roomId)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	for rows.Next() {
+		foundEvent := &Event{}
+		var signature string
+		err = rows.Scan(&foundEvent.Id,
+			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
+			&foundEvent.EventType,
+			&foundEvent.Content,
+			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
+		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
+		if err != nil {
+			return
+		}
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		events = append(events, foundEvent)
+	}
+
+	return
+}
+
+func ReadEventsFromTransaction(txnId string) (events []*Event, err error) {
+	queryStmt := fmt.Sprintf(`SELECT id, roomId, txnId, sender, origin, timestamp, eventType, content, depth, hash, signature 
 		FROM event
 		WHERE txnId = '%s'`, txnId)
 
@@ -132,22 +664,41 @@ func ReadEventsFromTransaction(txnId string) (events map[string]*Event, err erro
 
 	defer rows.Close()
 
-	events = make(map[string]*Event)
-
 	for rows.Next() {
 		foundEvent := &Event{}
-		err = rows.Scan(
+		var signature string
-			&foundEvent.Id,
+		err = rows.Scan(&foundEvent.Id,
 			&foundEvent.RoomId,
+			&foundEvent.Unsigned.TransactionId,
+			&foundEvent.Sender,
+			&foundEvent.Origin,
+			&foundEvent.Timestamp,
 			&foundEvent.EventType,
 			&foundEvent.Content,
-			&foundEvent.ParentId,
 			&foundEvent.Depth,
+			&foundEvent.Hashes.SHA256,
+			&signature,
 		)
+
+		foundEvent.Signatures = make(map[string]map[string]string)
+		foundEvent.Signatures[foundEvent.Origin] = make(map[string]string)
+		foundEvent.Signatures[foundEvent.Origin]["ed25519:1"] = signature
+
 		if err != nil {
 			return
 		}
-		events[foundEvent.Id] = foundEvent
+
+		foundEvent.PrevEventHashes, err = ReadParents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		foundEvent.AuthEventHashes, err = ReadAuthEvents(foundEvent.Id)
+		if err != nil {
+			return
+		}
+
+		events = append(events, foundEvent)
 	}
 
 	return
@@ -155,11 +706,8 @@ func ReadEventsFromTransaction(txnId string) (events map[string]*Event, err erro
 
 func UpdateEvent(event *Event) (err error) {
 	sqlStmt := fmt.Sprintf(`UPDATE event SET
-			roomId = ?,
 			eventType = ?,
 			content = ?,
-			parentId = ?,
-			depth = ?
 		WHERE id = ?`)
 
 	tx, err := database.DB.Begin()
@@ -174,11 +722,8 @@ func UpdateEvent(event *Event) (err error) {
 	defer stmt.Close()
 
 	_, err = stmt.Exec(
-		event.RoomId,
 		event.EventType,
 		event.Content,
-		event.ParentId,
-		event.Depth,
 		event.Id,
 	)
 	if err != nil {
@@ -203,6 +748,52 @@ func DeleteEvent(id string) (err error) {
 		return
 	}
 
+	err = DeleteParents(id)
+	if err != nil {
+		return
+	}
+
+	err = DeleteAuthEvents(id)
+	if err != nil {
+		return
+	}
+
+	tx.Commit()
+	return
+}
+
+func DeleteParents(eventId string) (err error) {
+	queryStmt := fmt.Sprintf(`DELETE FROM parent 
+		WHERE eventId = '%s'`, eventId)
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		return
+	}
+
+	_, err = database.DB.Exec(queryStmt)
+	if err != nil {
+		return
+	}
+
+	tx.Commit()
+	return
+}
+
+func DeleteAuthEvents(eventId string) (err error) {
+	queryStmt := fmt.Sprintf(`DELETE FROM authEvent 
+		WHERE eventId = '%s'`, eventId)
+
+	tx, err := database.DB.Begin()
+	if err != nil {
+		return
+	}
+
+	_, err = database.DB.Exec(queryStmt)
+	if err != nil {
+		return
+	}
+
 	tx.Commit()
 	return
 }

entities/event/transaction.go

@@ -0,0 +1,8 @@
+package event
+
+type Transaction struct {
+	Id        string   `json:"id,omitempty"`
+	Origin    string   `json:"origin,omitempty"`
+	Timestamp int64    `json:"timestamp,omitempty"`
+	PDUS      []*Event `json:"pdus,omitempty"`
+}

entities/event/transactionDatabaseConnector.go

@@ -1,9 +1,8 @@
-package transaction
+package event
 
 import (
 	"fmt"
 
-	"nutfactory.org/Matrix/entities/event"
 	"nutfactory.org/Matrix/utils/database"
 )
 
@@ -50,7 +49,7 @@ func ReadTransaction(id string) (foundTransaction *Transaction, err error) {
 		if err != nil {
 			return
 		}
-		foundTransaction.PDUS, err = event.ReadEventsFromTransaction(foundTransaction.Id)
+		foundTransaction.PDUS, err = ReadEventsFromTransaction(foundTransaction.Id)
 	}
 
 	return

entities/general/generalController.go

@@ -0,0 +1,94 @@
+package general
+
+import (
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"nutfactory.org/Matrix/config"
+	"nutfactory.org/Matrix/entities/device"
+	"nutfactory.org/Matrix/utils"
+	"nutfactory.org/Matrix/utils/database"
+)
+
+type resolveServerNameResponse struct {
+	Server string `json:"m.server,omitempty"`
+}
+
+type getServerImplementationResponse struct {
+	Server serverImplementation `json:"server,omitempty"`
+}
+
+type serverImplementation struct {
+	Name    string `json:"name,omitempty"`
+	Version string `json:"version,omitempty"`
+}
+
+type resetBody struct {
+	Packetloss            float32 `json:"packetloss,omitempty"`
+	UnavailableTill       int     `json:"unavailableTill,omitempty"`
+	AuthentificationCheck bool    `json:"authentificationCheck,omitempty"`
+	Signing               bool    `json:"signing,omitempty"`
+	Encryption            bool    `json:"encryption,omitempty"`
+}
+
+func ResolveServerName(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	response := resolveServerNameResponse{Server: fmt.Sprintf("%s:%s", config.Homeserver, config.Port)}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func GetServerImplementation(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	response := getServerImplementationResponse{Server: serverImplementation{Name: config.ServerName, Version: config.Version}}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func Reset(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := resetBody{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	if err := device.InitServerSigningKey(); err != nil {
+		log.Fatal(err)
+	}
+	config.VerifyKeys = make(map[string]map[string][]byte)
+
+	os.Remove("sqlite.db")
+
+	if err := database.InitDB("sqlite.db"); err != nil {
+		log.Fatal(err)
+	}
+
+	config.Packetloss = request.Packetloss
+	config.UnavailableTill = request.UnavailableTill
+	config.AuthentificationCheck = request.AuthentificationCheck
+	config.Signing = request.Signing
+	config.Encryption = request.Signing
+
+	w.WriteHeader(http.StatusOK)
+}

entities/room/room.go

@@ -1,13 +1,114 @@
 package room
 
-import (
+import "nutfactory.org/Matrix/entities/event"
-	"nutfactory.org/Matrix/entities/event"
-)
 
 type Room struct {
-	Id       string                  `json:"id,omitempty"`
+	Id         string   `json:"id,omitempty"`
-	Messages map[string]*event.Event `json:"messages,omitempty"`
+	Version    string   `json:"version,omitempty"`
-	//State    map[string]event.Event `json:"state,omitempty"`
+	Name       string   `json:"name,omitempty"`
-	Members []string `json:"members,omitempty"`
+	Topic      string   `json:"topic,omitempty"`
-	Version string   `json:"version,omitempty"`
+	Members    []string `json:"members,omitempty"`
+	Servers    []string
+	Events     map[string]*event.Event `json:"events,omitempty"`
+	Visibility string                  `json:"visibility,omitempty"`
+	IsDirect   bool                    `json:"is_direct,omitempty"`
+	Federated  bool                    `json:"federated,omitempty"`
 }
+
+type createRoomRequest struct {
+	Visibility                string             `json:"visibility,omitempty"`
+	RoomAliasName             string             `json:"room_alias_name,omitempty"`
+	Name                      string             `json:"name,omitempty"`
+	Topic                     string             `json:"topic,omitempty"`
+	Invite                    string             `json:"invite,omitempty"`
+	Invite3pid                invite3pid         `json:"invite_3pid,omitempty"`
+	RoomVersion               string             `json:"room_version,omitempty"`
+	CreationContent           creationContent    `json:"creation_content,omitempty"`
+	InitialState              []event.StateEvent `json:"initial_state,omitempty"`
+	Preset                    string             `json:"preset,omitempty"`
+	IsDirect                  bool               `json:"is_direct,omitempty"`
+	PowerLevelContentOverride string             `json:"power_level_content_override,omitempty"`
+}
+
+type createRoomResponse struct {
+	RoomId string `json:"room_id,omitempty"`
+}
+
+type getRoomMemberRequest struct{}
+
+type getRoomMemberResponse struct {
+	Chunk []*event.Event `json:"chunk,omitempty"`
+}
+
+type joinRoomUserRequest struct {
+	ThirdPartySigned thirdPartySigned `json:"third_party_signed,omitempty"`
+}
+
+type joinRoomUserResponse struct {
+	RoomId string `json:"room_id,omitempty"`
+}
+
+type leaveRoomUserRequest struct{}
+
+type leaveRoomUserResponse struct{}
+
+type makeJoinRequest struct{}
+
+type makeJoinResponse struct {
+	RoomVersion string      `json:"room_version,omitempty"`
+	Event       event.Event `json:"event,omitempty"`
+}
+
+type joinRoomServerRequest struct {
+	Sender    string                   `json:"sender,omitempty"`
+	Origin    string                   `json:"origin,omitempty"`
+	Timestamp int64                    `json:"origin_server_ts,omitempty"`
+	EventType string                   `json:"type,omitempty"`
+	StateKey  string                   `json:"state_key,omitempty"`
+	Content   event.MemberEventContent `json:"content,omitempty"`
+}
+
+type joinRoomServerResponse struct {
+	Origin    string         `json:"origin,omitempty"`
+	AuthChain []*event.Event `json:"auth_chain,omitempty"`
+	State     []*event.Event `json:"state,omitempty"`
+}
+
+type makeLeaveRequest struct{}
+
+type makeLeaveResponse struct{}
+
+type leaveRoomServerRequest struct{}
+
+type leaveRoomServerResponse struct{}
+
+type invite3pid struct {
+	IdServer      string `json:"id_server,omitempty"`
+	IdAccessToken string `json:"id_access_token,omitempty"`
+	Medium        string `json:"medium,omitempty"`
+	Address       string `json:"address,omitempty"`
+}
+
+type creationContent struct {
+	Federated bool `json:"m.federate,omitempty"`
+}
+
+type unsignedData struct {
+	Age             int          `json:"age,omitempty"`
+	RedactedBecause *event.Event `json:"redacted_because,omitempty"`
+	TransactionId   string       `json:"transaction_id,omitempty"`
+}
+
+type invite struct {
+	DisplayName string           `json:"display_name,omitempty"`
+	Signed      thirdPartySigned `json:"signed,omitempty"`
+}
+
+type thirdPartySigned struct {
+	Sender     string     `json:"sender,omitempty"`
+	MXID       string     `json:"mxid,omitempty"`
+	Signatures signatures `json:"signatures,omitempty"`
+	Token      string     `json:"token,omitempty"`
+}
+
+type signatures struct{}

entities/room/roomController.go

@@ -1,5 +1,770 @@
 package room
 
-func New() (room *Room) {
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"log"
+	"net/http"
+	"strings"
+	"time"
+
+	"github.com/cenkalti/backoff/v4"
+	"github.com/gorilla/mux"
+	"nutfactory.org/Matrix/config"
+	"nutfactory.org/Matrix/entities/event"
+	"nutfactory.org/Matrix/entities/user"
+	"nutfactory.org/Matrix/utils"
+)
+
+func New(
+	version string,
+	name string,
+	topic string,
+	visibility string,
+	isDirect bool,
+	federated bool,
+	creatorId string,
+) (err error, newRoom *Room) {
+	err, roomId := utils.CreateUUID()
+	if err != nil {
+		return
+	}
+	id := generateRoomId(roomId)
+	newRoom = &Room{
+		Id:         id,
+		Version:    version,
+		Name:       name,
+		Topic:      topic,
+		Members:    []string{creatorId},
+		Events:     make(map[string]*event.Event),
+		Visibility: visibility,
+		IsDirect:   isDirect,
+		Federated:  federated,
+	}
 	return
 }
+
+func CreateRoomHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := createRoomRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	err, newRoom := New(
+		request.RoomVersion,
+		request.Name,
+		request.Topic,
+		request.Visibility,
+		request.IsDirect,
+		request.CreationContent.Federated,
+		foundUser.Id,
+	)
+	err = CreateRoom(newRoom)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	createEventContent := event.CreateEventContent{
+		Creator:     foundUser.Id,
+		Federated:   request.CreationContent.Federated,
+		RoomVersion: newRoom.Version,
+	}
+	createEventContentBytes, _ := json.Marshal(createEventContent)
+	err, createEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.create",
+		"",
+		string(createEventContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(createEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	memberEventContent := event.MemberEventContent{
+		DisplayName: foundUser.Name,
+		IsDirect:    request.IsDirect,
+		Membership:  "join",
+	}
+	memberEventContentBytes, _ := json.Marshal(memberEventContent)
+	err, memberEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.member",
+		foundUser.Id,
+		string(memberEventContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(memberEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	userPowerLevel := make(map[string]int)
+	userPowerLevel[foundUser.Id] = 100
+	powerLevelEventContent := event.PowerLevelsEventContent{
+		Ban:           50,
+		EventsDefault: 0,
+		Invite:        50,
+		Kick:          50,
+		Redact:        50,
+		StateDefault:  50,
+		Users:         userPowerLevel,
+		UsersDefault:  0,
+		Notifications: event.Notifications{
+			Room: 50,
+		},
+	}
+	powerLevelEventContentBytes, _ := json.Marshal(powerLevelEventContent)
+	err, powerLevelEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.power_levels",
+		"",
+		string(powerLevelEventContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(powerLevelEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	joinRule := "invite"
+	historyVisibilty := "shared"
+	guestAccess := "can_join"
+	if request.Preset == "public_chat" {
+		joinRule = "public"
+		guestAccess = "forbidden"
+	}
+	joinRuleEventContent := event.JoinRuleEventContent{
+		JoinRule: joinRule,
+	}
+	joinRuleEventContentBytes, _ := json.Marshal(joinRuleEventContent)
+	err, joinRulesEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.join_rules",
+		"",
+		string(joinRuleEventContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(joinRulesEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	historyVisiblilityEventContent := event.HistoryVisibilityEventContent{
+		HistoryVisibility: historyVisibilty,
+	}
+	historyVisiblilityContentBytes, _ := json.Marshal(historyVisiblilityEventContent)
+	err, historyVisibilityEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.history_visibility",
+		"",
+		string(historyVisiblilityContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(historyVisibilityEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	guestAccessEventContent := event.GuestAccessEventContent{
+		GuestAccess: guestAccess,
+	}
+	guestAccessContentBytes, _ := json.Marshal(guestAccessEventContent)
+	err, guestAccessEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.guest_access",
+		"",
+		string(guestAccessContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(guestAccessEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	nameEventContent := event.NameEventContent{
+		Name: newRoom.Name,
+	}
+	nameContentBytes, _ := json.Marshal(nameEventContent)
+	err, nameEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.name",
+		"",
+		string(nameContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(nameEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	topicEventContent := event.TopicEventContent{
+		Topic: newRoom.Topic,
+	}
+	topicContentBytes, _ := json.Marshal(topicEventContent)
+	err, topicEvent := event.New(
+		newRoom.Id,
+		foundUser.Id,
+		config.Homeserver,
+		time.Now().Unix(),
+		"m.room.topic",
+		"",
+		string(topicContentBytes),
+		"",
+	)
+	if err == nil {
+		err = event.CreateEvent(topicEvent, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	response := createRoomResponse{RoomId: newRoom.Id}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func GetRoomMemberHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := getRoomMemberRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	if roomId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Params"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	event.ReadStateEvents(roomId, "m.room.member")
+
+	w.WriteHeader(http.StatusBadRequest)
+	if err := json.NewEncoder(w).Encode("Not Implemented"); err != nil {
+		panic(err)
+	}
+}
+
+func JoinRoomUserHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := joinRoomUserRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	token, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundUser, err := user.ReadUserFromAccessToken(token)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_UNKNOWN_TOKEN", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err = decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	if roomId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundRoom, err := ReadRoom(roomId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	var joinEvent *event.Event
+	if foundRoom == nil {
+		memberEventContent := event.MemberEventContent{
+			DisplayName: foundUser.Name,
+			IsDirect:    true,
+			Membership:  "join",
+		}
+		memberEventContentBytes, _ := json.Marshal(memberEventContent)
+		err, memberEvent := event.New(
+			roomId,
+			foundUser.Id,
+			config.Homeserver,
+			time.Now().Unix(),
+			"m.room.member",
+			foundUser.Id,
+			string(memberEventContentBytes),
+			"",
+		)
+		if err == nil {
+			err = event.CreateEvent(memberEvent, "")
+		}
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+				panic(err)
+			}
+			return
+		}
+		httpString := "https"
+		server := strings.Split(roomId, ":")[1]
+		requestUrl := fmt.Sprintf("%s://%s/_matrix/federation/v1/make_join/%s/%s", httpString, server, roomId, foundUser.Id)
+		res, err := http.Get(requestUrl)
+		makeJoinRes := makeJoinResponse{}
+		decoder = json.NewDecoder(res.Body)
+		err = decoder.Decode(&makeJoinRes)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+				panic(err)
+			}
+			return
+		}
+		err = CreateRoom(&Room{Id: roomId, Version: makeJoinRes.RoomVersion})
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+				panic(err)
+			}
+			return
+		}
+		err, joinEvent = event.New(
+			roomId,
+			makeJoinRes.Event.Sender,
+			makeJoinRes.Event.Origin,
+			makeJoinRes.Event.Timestamp,
+			makeJoinRes.Event.EventType,
+			makeJoinRes.Event.StateKey,
+			makeJoinRes.Event.Content,
+			"",
+		)
+		requestUrl = fmt.Sprintf("%s://%s/_matrix/federation/v2/send_join/%s/%s", httpString, server, roomId, joinEvent.Id)
+		reqBody, err := json.Marshal(joinEvent)
+		if err != nil {
+			return
+		}
+		client := &http.Client{}
+		req, err := http.NewRequest(http.MethodPut, requestUrl, bytes.NewBuffer(reqBody))
+		if err != nil {
+			return
+		}
+		res, err = client.Do(req)
+		joinRes := joinRoomServerResponse{}
+		decoder = json.NewDecoder(res.Body)
+		err = decoder.Decode(&joinRes)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+				panic(err)
+			}
+			return
+		}
+		err = event.HandleEvents(joinRes.State)
+		if err != nil {
+			w.WriteHeader(http.StatusBadRequest)
+			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Handling Events: %s", err)}); err != nil {
+				panic(err)
+			}
+			return
+		}
+	} else {
+		memberEventContent := event.MemberEventContent{
+			DisplayName: foundUser.Name,
+			IsDirect:    true,
+			Membership:  "join",
+		}
+		memberEventContentBytes, _ := json.Marshal(memberEventContent)
+		err, joinEvent = event.New(
+			roomId,
+			foundUser.Id,
+			config.Homeserver,
+			time.Now().Unix(),
+			"m.room.member",
+			foundUser.Id,
+			string(memberEventContentBytes),
+			"",
+		)
+	}
+	err, txnId := utils.CreateUUID()
+	err = event.CreateEvent(joinEvent, txnId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	transaction := &event.Transaction{
+		Id:        txnId,
+		Origin:    config.Homeserver,
+		Timestamp: time.Now().Unix(),
+		PDUS:      []*event.Event{joinEvent},
+	}
+	servers, err := event.ReadServers(roomId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	for _, server := range servers {
+		//if server != config.Homeserver {
+		operation := func() error {
+			return event.SendTransaction(transaction, server)
+		}
+		notify := func(err error, duration time.Duration) {
+			log.Printf("Error Sending Transaction, retrying in %ss: %s", duration/1000000000, err)
+		}
+		go backoff.RetryNotify(operation, backoff.NewExponentialBackOff(), notify)
+		//}
+	}
+	err = CreateRoomMember(roomId, foundUser.Id)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := joinRoomUserResponse{RoomId: roomId}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func GetPrepInfoToJoinHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := makeJoinRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	userId := vars["userId"]
+	if roomId == "" || userId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	homeserver := strings.Split(userId, ":")
+	if len(homeserver) <= 1 {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Homeserver in UserId"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundRoom, err := ReadRoom(roomId)
+	if err != nil || foundRoom == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "MISSING_ROOM", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	memberEventContent := event.MemberEventContent{
+		Membership: "join",
+	}
+
+	memberEventContentBytes, err := json.Marshal(memberEventContent)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+
+	response := makeJoinResponse{
+		RoomVersion: foundRoom.Version,
+		Event: event.Event{
+			Sender:    userId,
+			Origin:    homeserver[1],
+			Timestamp: time.Now().Unix(),
+			EventType: "m.room.member",
+			StateKey:  userId,
+			Content:   string(memberEventContentBytes),
+		},
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+// TODO: TEST
+func JoinRoomServerHandler(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := event.Event{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	vars := mux.Vars(r)
+	roomId := vars["roomId"]
+	eventId := vars["eventId"]
+	if roomId == "" || eventId == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Missing Parameter"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundRoom, err := ReadRoom(roomId)
+	if err != nil || foundRoom == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "MISSING_ROOM", ErrorMessage: fmt.Sprintf("%s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	request.RoomId = roomId
+	request.Id = eventId
+
+	memberEventContent := event.MemberEventContent{}
+	err = json.Unmarshal([]byte(request.Content), &memberEventContent)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	if memberEventContent.Membership != "join" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Wrong Membership"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	if err == nil {
+		err = event.CreateEvent(&request, "")
+	}
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Event-Creation: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	CreateRoomMember(roomId, request.StateKey)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	authChain, err := event.GetAuthChain(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Error Creating Auth Chain: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	stateEvents, err := event.ReadStateEventsFromRoom(roomId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := joinRoomServerResponse{
+		Origin:    config.Homeserver,
+		AuthChain: authChain,
+		State:     stateEvents,
+	}
+	w.WriteHeader(http.StatusOK)
+	if err := json.NewEncoder(w).Encode(response); err != nil {
+		panic(err)
+	}
+}
+
+func generateRoomId(id string) string {
+	return fmt.Sprintf("!%s:%s", id, config.Homeserver)
+}

entities/room/roomDatabaseConnector.go

@@ -7,11 +7,11 @@ import (
 	"nutfactory.org/Matrix/utils/database"
 )
 
-func CreateRoom(room *Room, userId string) (err error) {
+func CreateRoom(room *Room) (err error) {
 	sqlStmt := fmt.Sprintf(`INSERT INTO room
-		(id, version)
+		(id, version, visibility, name, topic, isDirect, federated)
 		VALUES
-		(?, ?)`)
+		(?, ?, ?, ?, ?, ?, ?)`)
 
 	tx, err := database.DB.Begin()
 	if err != nil {
@@ -24,42 +24,31 @@ func CreateRoom(room *Room, userId string) (err error) {
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(room.Id, room.Version)
+	_, err = stmt.Exec(
+		room.Id,
+		room.Version,
+		room.Visibility,
+		room.Name,
+		room.Topic,
+		room.IsDirect,
+		room.Federated,
+	)
 	if err != nil {
 		return
 	}
 	tx.Commit()
-	err = CreateRoomMember(room.Id, userId)
+	for _, userId := range room.Members {
+		err = CreateRoomMember(room.Id, userId)
+	}
 	return
 }
 
 func CreateRoomMember(roomId string, userId string) (err error) {
-	sqlStmt := fmt.Sprintf(`INSERT INTO roomMember
+	return event.CreateRoomMember(roomId, userId)
-		(roomId, userId)
-		VALUES
-		(?, ?)`)
-
-	tx, err := database.DB.Begin()
-	if err != nil {
-		return
-	}
-
-	stmt, err := tx.Prepare(sqlStmt)
-	if err != nil {
-		return
-	}
-	defer stmt.Close()
-
-	_, err = stmt.Exec(roomId, userId)
-	if err != nil {
-		return
-	}
-	tx.Commit()
-	return
 }
 
 func ReadRoom(id string) (foundRoom *Room, err error) {
-	queryStmt := fmt.Sprintf(`SELECT id, version 
+	queryStmt := fmt.Sprintf(`SELECT id, version, visibility, name, topic, isDirect, federated
 		FROM room
 		WHERE id = '%s'`, id)
 
@@ -72,11 +61,19 @@ func ReadRoom(id string) (foundRoom *Room, err error) {
 
 	if rows.Next() {
 		foundRoom = &Room{}
-		err = rows.Scan(&foundRoom.Id, &foundRoom.Version)
+		err = rows.Scan(
+			&foundRoom.Id,
+			&foundRoom.Version,
+			&foundRoom.Visibility,
+			&foundRoom.Name,
+			&foundRoom.Topic,
+			&foundRoom.IsDirect,
+			&foundRoom.Federated,
+		)
 		if err != nil {
 			return
 		}
-		foundRoom.Messages, err = event.ReadEventsFromRoom(foundRoom.Id)
+		foundRoom.Events, err = event.ReadEventsFromRoom(foundRoom.Id)
 		if err != nil {
 			return
 		}
@@ -90,34 +87,17 @@ func ReadRoom(id string) (foundRoom *Room, err error) {
 }
 
 func ReadRoomMembers(roomId string) (roomMembers []string, err error) {
-	queryStmt := fmt.Sprintf(`SELECT userId 
+	return event.ReadRoomMembers(roomId)
-		FROM roomMember
-		WHERE roomId = '%s'`, roomId)
-
-	rows, err := database.DB.Query(queryStmt)
-	if err != nil {
-		return
-	}
-
-	defer rows.Close()
-
-	roomMembers = []string{}
-
-	for rows.Next() {
-		var foundUser string
-		err = rows.Scan(&foundUser)
-		if err != nil {
-			return
-		}
-		roomMembers = append(roomMembers, foundUser)
-	}
-
-	return
 }
 
 func UpdateRoom(room *Room) (err error) {
 	sqlStmt := fmt.Sprintf(`UPDATE room SET
-			version = ?
+			version = ?,
+			visibility = ?,
+			name = ?,
+			topic = ?,
+			isDirect = ?,
+			federated = ?
 		WHERE id = ?`)
 
 	tx, err := database.DB.Begin()
@@ -131,7 +111,15 @@ func UpdateRoom(room *Room) (err error) {
 	}
 	defer stmt.Close()
 
-	_, err = stmt.Exec(room.Version, room.Id)
+	_, err = stmt.Exec(
+		room.Version,
+		room.Visibility,
+		room.Name,
+		room.Topic,
+		room.IsDirect,
+		room.Federated,
+		room.Id,
+	)
 	if err != nil {
 		return
 	}

entities/transaction/transaction.go

@@ -1,13 +0,0 @@
-package transaction
-
-import (
-	"nutfactory.org/Matrix/entities/event"
-)
-
-type Transaction struct {
-	Id        string                  `json:"id,omitempty"`
-	Origin    string                  `json:"origin,omitempty"`
-	Timestamp int                     `json:"timestamp,omitempty"`
-	PDUS      map[string]*event.Event `json:"pdus,omitempty"`
-	//EDUS      []event.EDU            `json:"edus,omitempty"`
-}

entities/transaction/transactionController.go

@@ -1,5 +0,0 @@
-package transaction
-
-func New() (transaction *Transaction) {
-	return
-}

entities/user/user.go

@@ -11,6 +11,14 @@ type User struct {
 	Devices  map[string]*device.Device `json:"devices,omitempty"`
 }
 
+type availableRequest struct {
+	Username string `json:"username,omitempty"`
+}
+
+type availableResponse struct {
+	Available bool `json:"available,omitempty"`
+}
+
 type registerRequest struct {
 	Auth         authentificationData `json:"auth,omitempty"`
 	Username     string               `json:"username,omitempty"`
@@ -58,12 +66,6 @@ type changePasswordRequest struct {
 	Auth          authentificationData
 }
 
-type errorResponse struct {
-	ErrorCode    string `json:"errcode,omitempty"`
-	ErrorMessage string `json:"error,omitempty"`
-	RetryTime    int    `json:"retry_after_ms,omitempty"`
-}
-
 type identifier struct {
 	IdentifierType string `json:"type,omitempty"`
 	User           string `json:"user,omitempty"`

entities/user/userController.go

@@ -2,36 +2,72 @@ package user
 
 import (
 	"encoding/json"
-	"log"
+	"fmt"
 	"net/http"
 
+	"nutfactory.org/Matrix/config"
 	"nutfactory.org/Matrix/entities/device"
 	"nutfactory.org/Matrix/utils"
 )
 
-func New(id string, name, string, password string, devices map[string]*device.Device) (err error, newUser *User) {
+func New(username string, name string, password string) (err error, newUser *User) {
 	err, hashedPassword := utils.Hash([]byte(password))
 	if err != nil {
 		return
 	}
+	id := generateUserId(username)
 	newUser = &User{
 		Id:       id,
 		Name:     name,
-		Password: password,
+		Password: hashedPassword,
-		Devices:  devices,
+		Devices:  make(map[string]*device.Device),
 	}
 	return
 }
 
-func CheckUsernameAvailability(w http.ResponseWriter, r *http.Request) {
+func CheckUsernameAvailabilityHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	request := availableRequest{}
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	decoder := json.NewDecoder(r.Body)
+	err := decoder.Decode(&request)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	userId := generateUserId(request.Username)
+	foundUser, err := ReadUser(userId)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	if foundUser != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_USER_IN_USE", ErrorMessage: "Username already in use"}); err != nil {
+			panic(err)
+		}
+		return
+	}
 	w.WriteHeader(http.StatusOK)
-	if err := json.NewEncoder(w).Encode("Test"); err != nil {
+	if err := json.NewEncoder(w).Encode(availableResponse{Available: true}); err != nil {
 		panic(err)
 	}
 }
 
-func Register(w http.ResponseWriter, r *http.Request) {
+func RegisterHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
 	request := registerRequest{}
 	errResponse := utils.CheckRequest(r)
@@ -46,7 +82,7 @@ func Register(w http.ResponseWriter, r *http.Request) {
 	err := decoder.Decode(&request)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
-		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Could not parse JSON"}); err != nil {
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
 			panic(err)
 		}
 		return
@@ -59,12 +95,7 @@ func Register(w http.ResponseWriter, r *http.Request) {
 		}
 		return
 	}
-	// TODO: Use New Function
+	err, newUser := New(request.Username, request.Username, request.Password)
-	newUser := &User{
-		Id:       request.Username,
-		Name:     request.Username,
-		Password: request.Password,
-	}
 	foundUser, err := ReadUser(newUser.Id)
 	if foundUser != nil {
 		w.WriteHeader(http.StatusBadRequest)
@@ -76,40 +107,18 @@ func Register(w http.ResponseWriter, r *http.Request) {
 	err = CreateUser(newUser)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
-		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Database Error"}); err != nil {
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
 			panic(err)
 		}
 		return
 	}
-	userDevice, err := device.ReadDevice(request.DeviceId)
+	userDevice, errResponse := createUserDevice(request.DeviceId, request.DeviceName, newUser.Id)
-	if userDevice != nil {
+	if errResponse != nil {
-		err = userDevice.RenewAccesToken()
+		w.WriteHeader(http.StatusBadRequest)
-		if err != nil {
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
-			log.Fatalf("Unable to renew AccesToken: %s", err)
+			panic(err)
-			return
-		}
-		err = device.UpdateDevice(userDevice, newUser.Id)
-		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Database Error"}); err != nil {
-				panic(err)
-			}
-			return
-		}
-	} else {
-		err, userDevice = device.New(request.DeviceName)
-		if err != nil {
-			log.Fatalf("Unable to create device: %s", err)
-			return
-		}
-		err = device.CreateDevice(userDevice, newUser.Id)
-		if err != nil {
-			w.WriteHeader(http.StatusBadRequest)
-			if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Database Error"}); err != nil {
-				panic(err)
-			}
-			return
 		}
+		return
 	}
 	response := registerResponse{
 		UserId:      newUser.Id,
@@ -122,7 +131,7 @@ func Register(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-func Login(w http.ResponseWriter, r *http.Request) {
+func LoginHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
 	request := loginRequest{}
 	errResponse := utils.CheckRequest(r)
@@ -137,7 +146,7 @@ func Login(w http.ResponseWriter, r *http.Request) {
 	err := decoder.Decode(&request)
 	if err != nil {
 		w.WriteHeader(http.StatusBadRequest)
-		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Could not parse JSON"}); err != nil {
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Could not parse JSON: %s", err)}); err != nil {
 			panic(err)
 		}
 		return
@@ -150,40 +159,91 @@ func Login(w http.ResponseWriter, r *http.Request) {
 		}
 		return
 	}
-
+	if request.Identifier.IdentifierType != "m.id.user" && request.Identifier.User == "" {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: "Username missing"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	userId := generateUserId(request.Identifier.User)
+	foundUser, err := ReadUser(userId)
+	if err != nil || foundUser == nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_FORBIDDEN"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	err, hashedPassword := utils.Hash([]byte(request.Password))
+	if err != nil || foundUser.Password != hashedPassword {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorCode: "M_FORBIDDEN"}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	userDevice, errResponse := createUserDevice(request.DeviceId, request.DeviceName, request.Identifier.User)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	response := loginResponse{
+		UserId:      foundUser.Id,
+		AccessToken: userDevice.AccessToken,
+		DeviceId:    userDevice.Id,
+	}
+	response.DiscoveryInfo.Homeserver.BaseUrl = config.Homeserver
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
 	w.WriteHeader(http.StatusOK)
-	if err := json.NewEncoder(w).Encode("Test"); err != nil {
+	if err := json.NewEncoder(w).Encode(response); err != nil {
 		panic(err)
 	}
 }
 
-func Logout(w http.ResponseWriter, r *http.Request) {
+func LogoutHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	errResponse := utils.CheckRequest(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	accessToken, errResponse := utils.GetAccessToken(r)
+	if errResponse != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(errResponse); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundDevice, err := device.ReadDeviceFromAccessToken(accessToken)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
+	foundDevice.AccessToken = ""
+	err = device.UpdateDevice(foundDevice)
+	if err != nil {
+		w.WriteHeader(http.StatusBadRequest)
+		if err := json.NewEncoder(w).Encode(utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}); err != nil {
+			panic(err)
+		}
+		return
+	}
 	w.WriteHeader(http.StatusOK)
-	if err := json.NewEncoder(w).Encode("Test"); err != nil {
-		panic(err)
-	}
-}
-
-func Deactivate(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-	w.WriteHeader(http.StatusBadRequest)
-	if err := json.NewEncoder(w).Encode("Not Implemented"); err != nil {
-		panic(err)
-	}
-}
-
-func ChangePassword(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-	w.WriteHeader(http.StatusBadRequest)
-	if err := json.NewEncoder(w).Encode("Not Implemented"); err != nil {
-		panic(err)
-	}
 }
 
 //TODO: Check if necessary
-func Sync(w http.ResponseWriter, r *http.Request) {
+func SyncHandler(w http.ResponseWriter, r *http.Request) {
 	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
 	w.WriteHeader(http.StatusBadRequest)
 	if err := json.NewEncoder(w).Encode("Not Implemented"); err != nil {
@@ -193,8 +253,47 @@ func Sync(w http.ResponseWriter, r *http.Request) {
 
 func checkLoginType(loginType string) (errResponse *utils.ErrorResponse) {
 	if loginType != "m.login.password" {
-		errResponse = &utils.ErrorResponse{ErrorCode: "M_FORBIDDEN", ErrorMessage: "Unsupported Auth Type"}
+		errResponse = &utils.ErrorResponse{ErrorCode: "M_UNKNOWN", ErrorMessage: "Bad login type."}
 		return
 	}
 	return
 }
+
+func generateUserId(username string) string {
+	return fmt.Sprintf("@%s:%s", username, config.Homeserver)
+}
+
+func createUserDevice(id string, name string, userId string) (userDevice *device.Device, errResponse *utils.ErrorResponse) {
+	userDevice, err := device.ReadDevice(id)
+	if err != nil {
+		errResponse = &utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}
+		return
+	}
+	if userDevice != nil {
+		err = userDevice.RenewAccesToken()
+		if name != "" {
+			userDevice.Name = name
+		}
+		if err != nil {
+			errResponse = &utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Unable to renew AccesToken: %s", err)}
+			return
+		}
+		err = device.UpdateDevice(userDevice)
+		if err != nil {
+			errResponse = &utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}
+			return
+		}
+	} else {
+		err, userDevice = device.New(name)
+		if err != nil {
+			errResponse = &utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Unable to create device: %s", err)}
+			return
+		}
+		err = device.CreateDevice(userDevice, userId)
+		if err != nil {
+			errResponse = &utils.ErrorResponse{ErrorMessage: fmt.Sprintf("Database Error: %s", err)}
+			return
+		}
+	}
+	return
+}

entities/user/userDatabaseConnector.go

@@ -56,6 +56,31 @@ func ReadUser(id string) (foundUser *User, err error) {
 	return
 }
 
+func ReadUserFromAccessToken(accessToken string) (foundUser *User, err error) {
+	queryStmt := fmt.Sprintf(`SELECT u.id, u.name, u.password
+		FROM user as u
+		join device as d on u.id = d.userId
+		WHERE d.accessToken = '%s'`, accessToken)
+
+	rows, err := database.DB.Query(queryStmt)
+	if err != nil {
+		return
+	}
+
+	defer rows.Close()
+
+	if rows.Next() {
+		foundUser = &User{}
+		err = rows.Scan(&foundUser.Id, &foundUser.Name, &foundUser.Password)
+		if err != nil {
+			return
+		}
+		foundUser.Devices, err = device.ReadDevicesForUser(foundUser.Id)
+	}
+
+	return
+}
+
 func UpdateUser(user *User) (err error) {
 	sqlStmt := fmt.Sprintf(`UPDATE user SET
 			name = ?,

go.mod

@@ -3,6 +3,7 @@ module nutfactory.org/Matrix
 go 1.14
 
 require (
+	github.com/cenkalti/backoff/v4 v4.1.0
 	github.com/gorilla/mux v1.8.0
 	github.com/mattn/go-sqlite3 v1.14.3
 )

go.sum

@@ -1,4 +1,33 @@
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/cenkalti/backoff v1.1.0 h1:QnvVp8ikKCDWOsFheytRCoYWYPO/ObCTBGxT19Hc+yE=
+github.com/cenkalti/backoff v2.2.1+incompatible h1:tNowT99t7UNflLxfYYSlKYsBpXdEet03Pg2g16Swow4=
+github.com/cenkalti/backoff v2.2.1+incompatible/go.mod h1:90ReRw6GdpyfrHakVjL/QHaoyV4aDUVVkXQJJJ3NXXM=
+github.com/cenkalti/backoff/v4 v4.1.0 h1:c8LkOFQTzuO0WBM/ae5HdGQuZPfPxp7lqBRwQRm4fSc=
+github.com/cenkalti/backoff/v4 v4.1.0/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
+github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/gorilla/mux v1.8.0 h1:i40aqfkR1h2SlN9hojwV5ZA91wcXFOvkdNIeFDP5koI=
 github.com/gorilla/mux v1.8.0/go.mod h1:DVbg23sWSpFRCP0SfiEN6jmj59UnW/n46BH5rLB71So=
+github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
+github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
 github.com/mattn/go-sqlite3 v1.14.3 h1:j7a/xn1U6TKA/PHHxqZuzh64CdtRc7rU9M+AvkOl5bA=
 github.com/mattn/go-sqlite3 v1.14.3/go.mod h1:WVKg1VTActs4Qso6iwGbiFih2UIHo0ENGwNd0Lj+XmI=
+github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
+golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
+golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
+golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
+golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
+golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d h1:/iIZNFGxc/a7C3yWjGcnboV+Tkc7mxr+p6fDztwoxuM=
+golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+honnef.co/go/tools v0.0.1-2020.1.5 h1:nI5egYTGJakVyOryqLs1cQO5dO0ksin5XXs2pspk75k=
+honnef.co/go/tools v0.0.1-2020.1.5/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=

main.go

@@ -1,11 +1,16 @@
 package main
 
 import (
-	"encoding/json"
+	"crypto/tls"
 	"log"
 	"net/http"
 	"os"
 
+	"nutfactory.org/Matrix/config"
+	"nutfactory.org/Matrix/entities/device"
+	"nutfactory.org/Matrix/entities/event"
+	"nutfactory.org/Matrix/entities/general"
+	"nutfactory.org/Matrix/entities/room"
 	"nutfactory.org/Matrix/entities/user"
 	"nutfactory.org/Matrix/utils/database"
 	"nutfactory.org/Matrix/utils/router"
@@ -14,73 +19,65 @@ import (
 var keyPath = "./ssl.key"
 var certPath = "./ssl.crt"
 
-//var htmlPath = "./html/"
-
 var routes = router.Routes{
+
 	// General
-	router.Route{"ResolveServerName", "GET", "/.well-known/matrix/server", Test},
+	router.Route{"ResolveServerName", "GET", "/.well-known/matrix/server", general.ResolveServerName},
-	router.Route{"GetServerImplementation", "GET", "/_matrix/federation/v1/version", Test},
+	router.Route{"GetServerImplementation", "GET", "/_matrix/federation/v1/version", general.GetServerImplementation},
+	router.Route{"Reset", "GET", "/reset", general.Reset},
 
 	// Keys
-	router.Route{"GetSigningKey", "GET", "/_matrix/key/v2/server/{keyId}", Test},
+	router.Route{"GetSigningKey", "GET", "/_matrix/key/v2/server/{keyId}", device.GetServerSigningKeyHandler},
-	router.Route{"GetSigningKeyFromServer", "GET", "/_matrix/key/v2/query/{serverName}/{keyId}", Test},
+	router.Route{"GetSigningKey", "GET", "/_matrix/key/v2/server", device.GetServerSigningKeyHandler},
-	router.Route{"GetSigningKeyFromMultipleServer", "GET", "/_matrix/key/v2/query", Test},
 
 	// Users
-	router.Route{"CheckUsernameAvailability", "GET", "/_matrix/client/r0/register/available", user.CheckUsernameAvailability},
+	router.Route{"CheckUsernameAvailability", "GET", "/_matrix/client/r0/register/available", user.CheckUsernameAvailabilityHandler},
-	router.Route{"Register", "POST", "/_matrix/client/r0/register", user.Register},
+	router.Route{"Register", "POST", "/_matrix/client/r0/register", user.RegisterHandler},
-	router.Route{"Login", "POST", "/_matrix/client/r0/login", user.Login},
+	router.Route{"Login", "POST", "/_matrix/client/r0/login", user.LoginHandler},
-	router.Route{"Logout", "POST", "/_matrix/client/r0/logout", user.Logout},
+	router.Route{"Logout", "POST", "/_matrix/client/r0/logout", user.LogoutHandler},
-	router.Route{"Deactivate", "POST", "/_matrix/client/r0/account/deactivate", user.Deactivate},
+	router.Route{"Sync", "GET", "/_matrix/client/r0/sync", user.SyncHandler},
-	router.Route{"ChangePassword", "POST", "/_matrix/client/r0/account/password", user.ChangePassword},
-	router.Route{"Sync", "GET", "/_matrix/client/r0/sync", user.Sync},
 
 	// Rooms
-	router.Route{"CreateRoom", "POST", "/_matrix/client/r0/createRoom", Test},
+	router.Route{"CreateRoom", "POST", "/_matrix/client/r0/createRoom", room.CreateRoomHandler},
-	router.Route{"GetRoomMembers", "GET", "/_matrix/client/r0/rooms/{roomId}/members", Test},
+	router.Route{"GetRoomMembers", "GET", "/_matrix/client/r0/rooms/{roomId}/members", room.GetRoomMemberHandler},
-	router.Route{"JoinRoomUser", "POST", "/_matrix/client/r0/rooms/{roomId}/join", Test},
+	router.Route{"JoinRoomUser", "POST", "/_matrix/client/r0/rooms/{roomId}/join", room.JoinRoomUserHandler},
-	router.Route{"LeaveRoomUser", "POST", "/_matrix/client/r0/rooms/{roomId}/leave", Test},
 
-	router.Route{"GetPrepInfoToJoin", "GET", "/_matrix/federation/v1/make_join/{roomId}/{userId}", Test},
+	router.Route{"GetPrepInfoToJoin", "GET", "/_matrix/federation/v1/make_join/{roomId}/{userId}", room.GetPrepInfoToJoinHandler},
-	router.Route{"JoinRoomServer", "PUT", "/_matrix/federation/v2/send_join/{roomId}/{eventId}", Test},
+	router.Route{"JoinRoomServer", "PUT", "/_matrix/federation/v2/send_join/{roomId}/{eventId}", room.JoinRoomServerHandler},
-	router.Route{"GetPrepInfoToLeave", "GET", "/_matrix/federation/v1/make_leave/{roomId}/{userId}", Test},
-	router.Route{"LeaveRoomServer", "PUT", "/_matrix/federation/v2/send_leave/{roomId}/{eventId}", Test},
 
 	// Events
-	router.Route{"CreateEvent", "PUT", "/_matrix/client/r0/rooms/{roomId}/send/{eventType}/{txnId}", Test},
+	router.Route{"CreateEvent", "PUT", "/_matrix/client/r0/rooms/{roomId}/send/{eventType}/{txnId}", event.SendMessageHandler},
-	router.Route{"CreateStateEvent", "PUT", "/_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}", Test},
+	router.Route{"CreateStateEvent", "PUT", "/_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}", event.CreateStateEventHandler},
-	router.Route{"ChangeEvent", "PUT", "/_matrix/client/r0/rooms/{roomId}/redact/{eventId}/{txnId}", Test},
+	router.Route{"GetEventUser", "GET", "/_matrix/client/r0/rooms/{roomId}/event/{eventId}", event.GetEventUserHandler},
-	router.Route{"GetEvents", "GET", "/_matrix/client/r0/rooms/{roomId}/messages", Test},
+	router.Route{"GetStateEvent", "GET", "/_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}", event.GetStateEventHandler},
-	router.Route{"GetStateEventsUser", "GET", "/_matrix/client/r0/rooms/{roomId}/state", Test},
-	router.Route{"GetEventUser", "GET", "/_matrix/client/r0/rooms/{roomId}/event/{eventId}", Test},
-	router.Route{"GetStateEvent", "GET", "/_matrix/client/r0/rooms/{roomId}/state/{eventType}/{stateKey}", Test},
 
-	router.Route{"GetStateEventsServer", "GET", "/_matrix/federation/v1/state/{roomId}", Test},
+	router.Route{"SyncEventsServer", "PUT", "/_matrix/federation/v1/send/{txnId}", event.SyncEventsServerHandler},
-	router.Route{"GetEventServer", "GET", "/_matrix/federation/v1/event/{eventId}", Test},
+	router.Route{"Backfill", "GET", "/_matrix/federation/v1/backfill/{roomId}", event.BackfillHandler},
-	router.Route{"SyncEventsServer", "PUT", "/_matrix/federation/v1/send/{txnId}", Test},
-	router.Route{"Backfill", "GET", "/_matrix/federation/v1/backfill/{roomId}", Test},
-	router.Route{"GetMissingEvents", "POST", "/_matrix/federation/v1/get_missing_events/{roomId}", Test},
-}
-
-func Test(w http.ResponseWriter, r *http.Request) {
-	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
-	w.WriteHeader(http.StatusOK)
-	if err := json.NewEncoder(w).Encode("Test"); err != nil {
-		panic(err)
-	}
 }
 
 func main() {
-	// TODO: Remove later
+	// TODO: Change to something variable --> cli
+	// TODO: Implement Message Counter
+	http.DefaultTransport.(*http.Transport).TLSClientConfig = &tls.Config{InsecureSkipVerify: true}
+	config.Homeserver = "localhost"
+	config.Port = "80"
+	if err := device.InitServerSigningKey(); err != nil {
+		log.Fatal(err)
+	}
+	config.VerifyKeys = make(map[string]map[string][]byte)
 	os.Remove("sqlite.db")
 
-	_ = database.InitDB("sqlite.db")
+	if err := database.InitDB("sqlite.db"); err != nil {
+		log.Fatal(err)
+	}
 	defer database.DB.Close()
 
+	// TODO: Set Default Config Params here
+	config.HttpString = "https"
+
 	router := router.NewRouter(routes)
 
-	//router.PathPrefix("/").Handler(http.FileServer(http.Dir(htmlPath)))
+	// TODO: Serve on Port 443 and 80 without Redirect
-
 	httpErr := http.ListenAndServeTLS(":443", certPath, keyPath, router)
 	if httpErr != nil {
 		log.Fatal(httpErr)

utils/database/databaseConnector.go

@@ -34,7 +34,8 @@ func initDeviceTable() (err error) {
 	log.Printf("Init Device Table")
 	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS device (
 		id TEXT PRIMARY KEY, 
-		name TEXT, 
+		name TEXT,
+		accessToken TEXT,
 		userId TEXT
 	)`)
 	if err != nil {
@@ -137,10 +138,35 @@ func initEventTable() (err error) {
 		id TEXT PRIMARY KEY,
 		roomId TEXT,
 		txnId TEXT,
+		sender TEXT,
+		origin TEXT,
+		timestamp INTEGER,
 		eventType TEXT,
-		content TEXT,
+		stateKey TEXT,
-		parentId TEXT, 
+		content TEXT, 
-		depth INTEGER
+		depth INTEGER,
+		hash TEXT,
+		signature TEXT
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	statement, err = DB.Prepare(`CREATE TABLE IF NOT EXISTS parent (
+		eventId TEXT, 
+		parentId TEXT,
+		PRIMARY KEY (eventId, parentId)
+	)`)
+	if err != nil {
+		return
+	}
+	statement.Exec()
+
+	statement, err = DB.Prepare(`CREATE TABLE IF NOT EXISTS authEvent (
+		eventId TEXT, 
+		authEventId TEXT,
+		PRIMARY KEY (eventId, authEventId)
 	)`)
 	if err != nil {
 		return
@@ -202,7 +228,12 @@ func initRoomTable() (err error) {
 	log.Printf("Init Room Table")
 	statement, err := DB.Prepare(`CREATE TABLE IF NOT EXISTS room (
 		id TEXT PRIMARY KEY, 
-		version TEXT
+		version TEXT,
+		visibility TEXT,
+		name TEXT,
+		topic TEXT,
+		isDirect INT,
+		federated INT
 	)`)
 	if err != nil {
 		return
@@ -211,6 +242,7 @@ func initRoomTable() (err error) {
 	statement, err = DB.Prepare(`CREATE TABLE IF NOT EXISTS roomMember (
 		userId TEXT, 
 		roomId TEXT,
+		server TEXT,
 		PRIMARY KEY (userId, roomId)
 	)`)
 	if err != nil {

utils/encryptionService.go

@@ -1,11 +1,14 @@
 package utils
 
 import (
+	"crypto/ed25519"
 	"crypto/rand"
 	"crypto/sha256"
 	"encoding/base64"
 	"fmt"
 	"log"
+
+	"nutfactory.org/Matrix/config"
 )
 
 func CreateToken() (err error, token string) {
@@ -15,7 +18,7 @@ func CreateToken() (err error, token string) {
 		log.Fatal(err)
 		return
 	}
-	token = string(b)
+	token = fmt.Sprintf("%x", b)
 	return
 }
 
@@ -26,7 +29,7 @@ func CreateUUID() (err error, uuid string) {
 		log.Fatal(err)
 		return
 	}
-	uuid = fmt.Sprintf("%x-%x-%x-%x-%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
+	uuid = fmt.Sprintf("%x_%x_%x_%x_%x", b[0:4], b[4:6], b[6:8], b[8:10], b[10:])
 	return
 }
 
@@ -40,3 +43,23 @@ func Hash(s []byte) (err error, hashString string) {
 	hashString = base64.StdEncoding.EncodeToString(hash)
 	return
 }
+
+func GenerateKeyPair() (publicKey ed25519.PublicKey, privateKey ed25519.PrivateKey, err error) {
+	publicKey, privateKey, err = ed25519.GenerateKey(nil)
+	return
+}
+
+func Sign(message []byte) []byte {
+	return ed25519.Sign(config.PrivateKey, message)
+}
+
+func SignContent(content []byte) (signatures map[string]map[string]string) {
+	signatures = make(map[string]map[string]string)
+	signatures[config.Homeserver] = make(map[string]string)
+	signatures[config.Homeserver][config.KeyId] = string(Sign(content))
+	return
+}
+
+func VerifySignature(publicKey []byte, message []byte, signature []byte) bool {
+	return ed25519.Verify(publicKey, message, signature)
+}

utils/requestChecker.go

@@ -1,11 +1,24 @@
 package utils
 
 import (
+	"bytes"
 	"encoding/json"
+	"fmt"
 	"net/http"
 	"strings"
+
+	"nutfactory.org/Matrix/config"
 )
 
+type RequestSummary struct {
+	Method      string                       `json:"method,omitempty"`
+	Uri         string                       `json:"uri,omitempty"`
+	Origin      string                       `json:"origin,omitempty"`
+	Destination string                       `json:"destination,omitempty"`
+	Content     string                       `json:"content,omitempty"`
+	Signatures  map[string]map[string]string `json:"signatures,omitempty"`
+}
+
 type ErrorResponse struct {
 	ErrorCode    string `json:"errcode,omitempty"`
 	ErrorMessage string `json:"error,omitempty"`
@@ -19,6 +32,72 @@ func CheckRequest(r *http.Request) (response *ErrorResponse) {
 	return
 }
 
+func CheckAuthHeader(r *http.Request) (response *ErrorResponse) {
+	authHeader := r.Header.Get("Authorization")
+	if authHeader == "" || !strings.Contains(authHeader, "X-Matrix") {
+		response = &ErrorResponse{ErrorMessage: "Missing Authorization Header"}
+		return
+	}
+	keys := strings.Split(authHeader, ",")
+	origin := strings.Split(keys[0], "=")[1]
+	if !strings.Contains(keys[2], "ed25519") {
+		response = &ErrorResponse{ErrorMessage: "Missing ed25519 Signature Key"}
+		return
+	}
+	key := strings.Split(strings.Replace(strings.Split(keys[2], "=")[1], "\"", "", 2), ":")[1]
+	signature := strings.Replace(strings.Split(keys[2], "=")[1], "\"", "", 2)
+	buf := new(bytes.Buffer)
+	buf.ReadFrom(r.Body)
+	content := buf.String()
+	requestSummary := RequestSummary{
+		Method:      r.Method,
+		Uri:         r.RequestURI,
+		Origin:      origin,
+		Destination: config.Homeserver,
+		Content:     content,
+	}
+	requestSummaryString, err := json.Marshal(requestSummary)
+	if err != nil {
+		response = &ErrorResponse{ErrorMessage: "Error Creating Auth JSON String"}
+		return
+	}
+	correct := VerifySignature([]byte(key), requestSummaryString, []byte(signature))
+	if !correct {
+		response = &ErrorResponse{ErrorMessage: "Signature in Auth Header is incorrect"}
+		return
+	}
+	return
+}
+
+func CreateAuthHeader(method string, uri string, destination string, content string) (authHeader string, err error) {
+	requestSummary := RequestSummary{
+		Method:      method,
+		Uri:         uri,
+		Origin:      config.Homeserver,
+		Destination: destination,
+		Content:     content,
+	}
+	SigningContent, err := json.Marshal(requestSummary)
+	if err != nil {
+		return
+	}
+	authHeader = fmt.Sprintf("X-Matrix origin=%s,key=\"%s\",sig=\"%s\"", config.Homeserver, config.KeyId, Sign(SigningContent))
+	return
+}
+
+func GetAccessToken(r *http.Request) (token string, response *ErrorResponse) {
+	token = r.URL.Query().Get("access_token")
+	if token == "" {
+		token = r.Header.Get("Authorization")
+		if token == "" || !strings.Contains(token, "Bearer") {
+			response = &ErrorResponse{ErrorCode: "M_MISSING_TOKEN"}
+		} else {
+			token = strings.Split(token, " ")[1]
+		}
+	}
+	return
+}
+
 func IsJSONString(s string) bool {
 	var js string
 	return json.Unmarshal([]byte(s), &js) == nil