func (db *dbClient) newRedisClient() (rdisClient, error) {
if db.config.DatabaseAddress == "" {
return nil, errMissingDatabaseHost
}
if db.config.DatabasePass == "" {
logger.Info("Insecure redis database is not recommended")
}
r := &rClient{}
r.Client = redis.NewClient(&redis.Options{
//r.Client = redis.NewClient(&redis.Options{
Addr: db.config.DatabaseAddress,
Password: db.config.DatabasePass,
DB: db.config.DatabaseUser,
})
// Confirm we can communicate with the redis instance.
_, err := r.Ping().Result()
if err != nil {
return nil, errors.Wrap(err, "r.Pint().Result")
}
return r, nil
}
func main() {
http.HandleFunc("/", http.NotFound)
http.HandleFunc("/ws", newConnection)
logger.Info("Starting Tiberious on", config.Port)
if err := http.ListenAndServe(config.Port, nil); err != nil {
logger.Error(err)
}
}
// WriteGroupData writes a given group object to the current database.
func (db *dbClient) WriteGroupData(group *types.Group) error {
switch {
case db.config.UserDatabase == 0:
return db.rdis.writeGroupData(group)
default:
// TODO determine if this should be a fatal error, it should never happen
logger.Info("Invalid config, no group data written")
break
}
return nil
}
// NewDB returns a new database client
func NewDB(c settings.Config) (Client, error) {
client := &dbClient{
config: c,
}
if client.config.UserDatabase == 0 {
// Load Redis DB
var err error
client.rdis, err = client.newRedisClient()
if err != nil {
return client, errors.Wrap(err, "newRedisClient")
}
logger.Info("User database started on redis db", client.config.DatabaseUser)
}
return client, nil
}
package db
import (
"strings"
"tiberious/logger"
"tiberious/settings"
"tiberious/types"
"github.com/pkg/errors"
)
type (
// Client provides access to the database
Client interface {
GetKeySet(search string) ([]string, error)
WriteUserData(user *types.User) error
WriteRoomData(room *types.Room) error
WriteGroupData(group *types.Group) error
UserExists(id string) (bool, error)
RoomExists(gname, rname string) (bool, error)
GroupExists(gname string) (bool, error)
GetUserData(id string) (*types.User, error)
GetRoomData(gname, rname string) (*types.Room, error)
GetGroupData(gname string) (*types.Group, error)
DeleteUser(user *types.User) error
}
dbClient struct {
config settings.Config
rdis rdisClient
}
)
// NewDB returns a new database client
func NewDB(c settings.Config) (Client, error) {
client := &dbClient{
config: c,
}
if client.config.UserDatabase == 0 {
// Load Redis DB
var err error
client.rdis, err = client.newRedisClient()
if err != nil {
return client, errors.Wrap(err, "newRedisClient")
}
logger.Info("User database started on redis db", client.config.DatabaseUser)
}
return client, nil
}
// GetKeySet returns all the keys that match a given search pattern.
func (db *dbClient) GetKeySet(search string) ([]string, error) {
switch {
case db.config.UserDatabase == 0:
return db.rdis.getKeySet(search)
default:
break
}
return nil, types.NotInDB
}
// WriteUserData writes a given user object to the current database.
func (db *dbClient) WriteUserData(user *types.User) error {
switch {
case db.config.UserDatabase == 0:
return db.rdis.writeUserData(user)
default:
// TODO determine if this should be a fatal error, it should never happen
logger.Info("Invalid config, no user data written")
break
}
return nil
}
// WriteRoomData writes a given room object to the current database.
func (db *dbClient) WriteRoomData(room *types.Room) error {
switch {
case db.config.UserDatabase == 0:
return db.rdis.writeRoomData(room)
default:
// TODO determine if this should be a fatal error, it should never happen
logger.Info("Invalid config, no room data written")
break
}
return nil
}
// WriteGroupData writes a given group object to the current database.
func (db *dbClient) WriteGroupData(group *types.Group) error {
switch {
case db.config.UserDatabase == 0:
return db.rdis.writeGroupData(group)
default:
// TODO determine if this should be a fatal error, it should never happen
logger.Info("Invalid config, no group data written")
break
}
return nil
}
// UserExists returns whether a user exists in the database.
func (db *dbClient) UserExists(id string) (bool, error) {
res, err := db.GetKeySet("user-*-*-" + id)
if err != nil {
return false, errors.Wrap(err, "GetKeySet")
}
if len(res) == 0 {
return false, nil
}
return true, nil
}
// RoomExists returns whether a room exists in the database.
func (db *dbClient) RoomExists(gname, rname string) (bool, error) {
res, err := db.GetKeySet("room-" + gname + "-" + rname + "*")
if err != nil {
return false, errors.Wrap(err, "GetKeySet")
}
if len(res) == 0 {
return false, nil
}
return true, nil
}
// GroupExists returns whether a group exists in the database.
func (db *dbClient) GroupExists(gname string) (bool, error) {
res, err := db.GetKeySet("group-" + gname + "-*")
if err != nil {
return false, errors.Wrap(err, "GetKeySet")
}
if len(res) == 0 {
return false, nil
}
return true, nil
}
// GetUserData gets all the data for a given user ID from the database
func (db *dbClient) GetUserData(id string) (*types.User, error) {
switch {
case db.config.UserDatabase == 0:
return db.rdis.getUserData(id)
default:
break
}
return nil, types.NotInDB
}
// GetRoomData gets all the data for a given room (group required) from the database
func (db *dbClient) GetRoomData(gname, rname string) (*types.Room, error) {
switch {
case db.config.UserDatabase == 0:
return db.rdis.getRoomData(gname, rname)
default:
break
}
return nil, types.NotInDB
}
// GetGroupData gets all the data for a given group from the database
func (db *dbClient) GetGroupData(gname string) (*types.Group, error) {
switch {
case db.config.UserDatabase == 0:
return db.rdis.getGroupData(gname)
default:
break
}
return nil, types.NotInDB
}
// DeleteUser removes a user from all rooms and groups and deletes it from the
// database (use sparingly). */
func (db *dbClient) DeleteUser(user *types.User) error {
for _, gname := range user.Groups {
group, err := db.GetGroupData(gname)
if err != nil {
return errors.Wrap(err, "GetGroupData")
}
delete(group.Users, user.ID.String())
if err := db.WriteGroupData(group); err != nil {
return errors.Wrap(err, "WriteGroupData")
}
}
for _, rname := range user.Rooms {
slice := strings.Split(rname, "/")
room, err := db.GetRoomData(slice[0], slice[1])
if err != nil {
return errors.Wrap(err, "GetRoomData")
}
delete(room.Users, user.ID.String())
if err := db.WriteRoomData(room); err != nil {
return errors.Wrap(err, "WriteRoomData")
}
}
switch {
case db.config.UserDatabase == 0:
return db.rdis.deleteUser(user)
default:
// TODO determine if this should be a fatal error, it should never happen
logger.Info("Invalid config, user not deleted")
break
}
return nil
}
// ClientHandler handles all client interactions
func ClientHandler(conn *websocket.Conn) {
var err error
client := types.NewClient()
client.Conn = conn
client.User = new(types.User)
// Set the UUID and initialize a username of "guest"
client.User.ID, err = getUniqueID()
if err != nil {
logger.Error(err)
}
guests, err := dbClient.GetKeySet("user-guest-*-*")
if err != nil {
logger.Error(err)
}
// TODO give guests a numeric suffix, allow disabling guest connections.
client.User.Username = "******" + strconv.Itoa(len(guests)+1)
client.User.LoginName = client.User.Username
client.User.Type = "guest"
client.User.Connected = true
clients[client.User.ID.String()] = client
if config.AllowGuests {
defgroup, err := GetGroup("#default")
if err != nil {
logger.Error(err)
}
defgroup.Users[client.User.ID.String()] = client.User
client.User.Groups = append(client.User.Groups, "#default")
room, err := GetRoom("#default", "#general")
if err != nil {
logger.Error(err)
}
client.User.Rooms = append(client.User.Rooms, "#default/#general")
room.Users[client.User.ID.String()] = client.User
dbClient.WriteUserData(client.User)
dbClient.WriteGroupData(defgroup)
dbClient.WriteRoomData(room)
logger.Info("guest", client.User.ID.String(), "connected")
} else {
logger.Info("new client connected")
}
if err := client.Alert(types.OK, ""); err != nil {
logger.Error(err)
}
/* TODO we may want to remove this later it's just for easy testing.
* to allow a client to get their UUID back from the server after
* connecting. */
if config.AllowGuests {
if err := client.Alert(types.GeneralNotice, string("Connected as guest with ID "+client.User.ID.String())); err != nil {
logger.Error(err)
}
} else {
if err := client.Alert(types.ImportantNotice, "No Guests Allowed : send authentication token to continue"); err != nil {
logger.Error(err)
}
}
/* Never return from this loop!
* Never break from this loop unless intending to disconnect the client. */
for {
_, rawmsg, err := client.Conn.ReadMessage()
if err != nil {
switch {
case websocket.IsCloseError(err, websocket.CloseNormalClosure):
if client.User != nil {
logger.Info(client.User.Type, client.User.ID.String(), "disconnected")
} else {
logger.Info("client disconnected")
}
break
// TODO handle these different cases appropriately.
case websocket.IsCloseError(err, websocket.CloseGoingAway):
case websocket.IsCloseError(err, websocket.CloseProtocolError, websocket.CloseUnsupportedData):
// This should utilize the ban-score to combat possible spammers
case websocket.IsCloseError(err, websocket.ClosePolicyViolation, websocket.CloseMessageTooBig):
// These should also utilize the ban-score but with a higher ban
default:
logger.Info(err)
}
break
}
ban, err := ParseMessage(client, rawmsg)
if err != nil {
logger.Info(err)
}
if ban > 0 {
// TODO handle ban-score
break
}
}
// We broke out of the loop so disconnect the client.
client.Conn.Close()
if client.User != nil {
if client.User.Type == "guest" {
if err := dbClient.DeleteUser(client.User); err != nil {
logger.Error(err)
}
} else {
client.User.Connected = false
dbClient.WriteUserData(client.User)
}
}
delete(clients, client.User.ID.String())
}
