neko/internal/session/manager.go

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package session
import (
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"fmt"
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"sync"
"github.com/kataras/go-events"
"github.com/rs/zerolog"
"github.com/rs/zerolog/log"
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"demodesk/neko/internal/config"
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"demodesk/neko/internal/types"
"demodesk/neko/internal/utils"
)
func New(config *config.Session) *SessionManagerCtx {
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manager := &SessionManagerCtx{
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logger: log.With().Str("module", "session").Logger(),
config: config,
host: nil,
hostMu: sync.Mutex{},
tokens: make(map[string]string),
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sessions: make(map[string]*SessionCtx),
sessionsMu: sync.Mutex{},
emmiter: events.New(),
}
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// create API session
if config.APIToken != "" {
manager.apiSession = &SessionCtx{
id: "API",
token: config.APIToken,
manager: manager,
logger: manager.logger.With().Str("session_id", "API").Logger(),
profile: types.MemberProfile{
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Name: "API Session",
IsAdmin: true,
CanLogin: true,
CanConnect: false,
CanWatch: true,
CanHost: true,
CanAccessClipboard: true,
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},
}
}
return manager
}
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type SessionManagerCtx struct {
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logger zerolog.Logger
config *config.Session
host types.Session
hostMu sync.Mutex
tokens map[string]string
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sessions map[string]*SessionCtx
sessionsMu sync.Mutex
emmiter events.EventEmmiter
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apiSession *SessionCtx
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}
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func (manager *SessionManagerCtx) Create(id string, profile types.MemberProfile) (types.Session, string, error) {
token, err := utils.NewUID(64)
if err != nil {
return nil, "", err
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}
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manager.sessionsMu.Lock()
if _, ok := manager.sessions[id]; ok {
manager.sessionsMu.Unlock()
return nil, "", fmt.Errorf("Session id already exists.")
}
if _, ok := manager.tokens[token]; ok {
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manager.sessionsMu.Unlock()
return nil, "", fmt.Errorf("Session token already exists.")
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}
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session := &SessionCtx{
id: id,
token: token,
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manager: manager,
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logger: manager.logger.With().Str("session_id", id).Logger(),
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profile: profile,
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}
manager.tokens[token] = id
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manager.sessions[id] = session
manager.sessionsMu.Unlock()
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manager.emmiter.Emit("created", session)
return session, token, nil
}
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func (manager *SessionManagerCtx) Update(id string, profile types.MemberProfile) error {
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manager.sessionsMu.Lock()
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session, ok := manager.sessions[id]
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if !ok {
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manager.sessionsMu.Unlock()
return fmt.Errorf("Session id not found.")
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}
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session.profile = profile
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manager.sessionsMu.Unlock()
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manager.emmiter.Emit("profile_changed", session)
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session.profileChanged()
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return nil
}
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func (manager *SessionManagerCtx) Delete(id string) error {
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manager.sessionsMu.Lock()
session, ok := manager.sessions[id]
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if !ok {
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manager.sessionsMu.Unlock()
return fmt.Errorf("Session id not found.")
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}
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delete(manager.tokens, session.token)
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delete(manager.sessions, id)
manager.sessionsMu.Unlock()
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var errs []error
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if session.State().IsConnected {
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err := session.GetWebSocketPeer().Destroy()
errs = append(errs, err)
}
if session.State().IsWatching {
err := session.GetWebRTCPeer().Destroy()
errs = append(errs, err)
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}
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manager.emmiter.Emit("deleted", session)
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return utils.ErrorsJoin(errs)
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}
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func (manager *SessionManagerCtx) Get(id string) (types.Session, bool) {
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manager.sessionsMu.Lock()
defer manager.sessionsMu.Unlock()
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session, ok := manager.sessions[id]
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return session, ok
}
func (manager *SessionManagerCtx) GetByToken(token string) (types.Session, bool) {
manager.sessionsMu.Lock()
id, ok := manager.tokens[token]
manager.sessionsMu.Unlock()
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if ok {
return manager.Get(id)
}
// is API session
if manager.apiSession != nil && manager.apiSession.token == token {
return manager.apiSession, true
}
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return nil, false
}
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func (manager *SessionManagerCtx) List() []types.Session {
manager.sessionsMu.Lock()
defer manager.sessionsMu.Unlock()
var sessions []types.Session
for _, session := range manager.sessions {
sessions = append(sessions, session)
}
return sessions
}
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// ---
// host
// ---
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func (manager *SessionManagerCtx) SetHost(host types.Session) {
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manager.hostMu.Lock()
manager.host = host
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manager.hostMu.Unlock()
manager.emmiter.Emit("host_changed", host)
}
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func (manager *SessionManagerCtx) GetHost() types.Session {
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manager.hostMu.Lock()
defer manager.hostMu.Unlock()
return manager.host
}
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func (manager *SessionManagerCtx) ClearHost() {
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manager.SetHost(nil)
}
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// ---
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// broadcasts
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// ---
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func (manager *SessionManagerCtx) Broadcast(v interface{}, exclude interface{}) {
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manager.sessionsMu.Lock()
defer manager.sessionsMu.Unlock()
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for id, session := range manager.sessions {
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if !session.State().IsConnected {
continue
}
if exclude != nil {
if in, _ := utils.ArrayIn(id, exclude); in {
continue
}
}
if err := session.Send(v); err != nil {
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manager.logger.Warn().Err(err).Msgf("broadcasting event has failed")
}
}
}
func (manager *SessionManagerCtx) AdminBroadcast(v interface{}, exclude interface{}) {
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manager.sessionsMu.Lock()
defer manager.sessionsMu.Unlock()
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for id, session := range manager.sessions {
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if !session.State().IsConnected || !session.Profile().IsAdmin {
continue
}
if exclude != nil {
if in, _ := utils.ArrayIn(id, exclude); in {
continue
}
}
if err := session.Send(v); err != nil {
manager.logger.Warn().Err(err).Msgf("broadcasting admin event has failed")
}
}
}
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// ---
// events
// ---
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func (manager *SessionManagerCtx) OnCreated(listener func(session types.Session)) {
manager.emmiter.On("created", func(payload ...interface{}) {
listener(payload[0].(*SessionCtx))
})
}
func (manager *SessionManagerCtx) OnDeleted(listener func(session types.Session)) {
manager.emmiter.On("deleted", func(payload ...interface{}) {
listener(payload[0].(*SessionCtx))
})
}
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func (manager *SessionManagerCtx) OnConnected(listener func(session types.Session)) {
manager.emmiter.On("connected", func(payload ...interface{}) {
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listener(payload[0].(*SessionCtx))
})
}
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func (manager *SessionManagerCtx) OnDisconnected(listener func(session types.Session)) {
manager.emmiter.On("disconnected", func(payload ...interface{}) {
listener(payload[0].(*SessionCtx))
})
}
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func (manager *SessionManagerCtx) OnProfileChanged(listener func(session types.Session)) {
manager.emmiter.On("profile_changed", func(payload ...interface{}) {
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listener(payload[0].(*SessionCtx))
})
}
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func (manager *SessionManagerCtx) OnStateChanged(listener func(session types.Session)) {
manager.emmiter.On("state_changed", func(payload ...interface{}) {
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listener(payload[0].(*SessionCtx))
})
}
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func (manager *SessionManagerCtx) OnHostChanged(listener func(session types.Session)) {
manager.emmiter.On("host_changed", func(payload ...interface{}) {
if payload[0] == nil {
listener(nil)
} else {
listener(payload[0].(*SessionCtx))
}
})
}
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// ---
// config
// ---
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func (manager *SessionManagerCtx) ImplicitHosting() bool {
return manager.config.ImplicitHosting
}