package inbound
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//go:generate go run github.com/v2fly/v2ray-core/v5/common/errors/errorgen
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import (
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"context"
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"sync"
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core "github.com/v2fly/v2ray-core/v5"
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"github.com/v2fly/v2ray-core/v5/app/proxyman"
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"github.com/v2fly/v2ray-core/v5/common"
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"github.com/v2fly/v2ray-core/v5/common/serial"
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"github.com/v2fly/v2ray-core/v5/common/session"
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"github.com/v2fly/v2ray-core/v5/features/inbound"
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)
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// Manager is to manage all inbound handlers.
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type Manager struct {
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access sync.RWMutex
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untaggedHandler []inbound.Handler
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taggedHandlers map[string]inbound.Handler
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running bool
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}
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// New returns a new Manager for inbound handlers.
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func New(ctx context.Context, config *proxyman.InboundConfig) (*Manager, error) {
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m := &Manager{
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taggedHandlers: make(map[string]inbound.Handler),
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}
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return m, nil
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}
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// Type implements common.HasType.
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func (*Manager) Type() interface{} {
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return inbound.ManagerType()
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}
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// AddHandler implements inbound.Manager.
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func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error {
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m.access.Lock()
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defer m.access.Unlock()
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tag := handler.Tag()
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if len(tag) > 0 {
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m.taggedHandlers[tag] = handler
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} else {
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m.untaggedHandler = append(m.untaggedHandler, handler)
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}
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if m.running {
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return handler.Start()
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}
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return nil
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}
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// GetHandler implements inbound.Manager.
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func (m *Manager) GetHandler(ctx context.Context, tag string) (inbound.Handler, error) {
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m.access.RLock()
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defer m.access.RUnlock()
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handler, found := m.taggedHandlers[tag]
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if !found {
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return nil, newError("handler not found: ", tag)
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}
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return handler, nil
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}
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// RemoveHandler implements inbound.Manager.
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func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
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if tag == "" {
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return common.ErrNoClue
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}
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m.access.Lock()
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defer m.access.Unlock()
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if handler, found := m.taggedHandlers[tag]; found {
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if err := handler.Close(); err != nil {
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newError("failed to close handler ", tag).Base(err).AtWarning().WriteToLog(session.ExportIDToError(ctx))
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}
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delete(m.taggedHandlers, tag)
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return nil
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}
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return common.ErrNoClue
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}
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// Start implements common.Runnable.
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func (m *Manager) Start() error {
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m.access.Lock()
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defer m.access.Unlock()
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m.running = true
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for _, handler := range m.taggedHandlers {
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if err := handler.Start(); err != nil {
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return err
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}
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}
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for _, handler := range m.untaggedHandler {
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if err := handler.Start(); err != nil {
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return err
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}
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}
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return nil
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}
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// Close implements common.Closable.
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func (m *Manager) Close() error {
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m.access.Lock()
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defer m.access.Unlock()
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m.running = false
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var errors []interface{}
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for _, handler := range m.taggedHandlers {
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if err := handler.Close(); err != nil {
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errors = append(errors, err)
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}
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}
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for _, handler := range m.untaggedHandler {
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if err := handler.Close(); err != nil {
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errors = append(errors, err)
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}
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}
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if len(errors) > 0 {
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return newError("failed to close all handlers").Base(newError(serial.Concat(errors...)))
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}
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return nil
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}
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// NewHandler creates a new inbound.Handler based on the given config.
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func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound.Handler, error) {
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rawReceiverSettings, err := serial.GetInstanceOf(config.ReceiverSettings)
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if err != nil {
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return nil, err
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}
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proxySettings, err := serial.GetInstanceOf(config.ProxySettings)
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if err != nil {
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return nil, err
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}
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tag := config.Tag
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receiverSettings, ok := rawReceiverSettings.(*proxyman.ReceiverConfig)
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if !ok {
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return nil, newError("not a ReceiverConfig").AtError()
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}
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streamSettings := receiverSettings.StreamSettings
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if streamSettings != nil && streamSettings.SocketSettings != nil {
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ctx = session.ContextWithSockopt(ctx, &session.Sockopt{
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Mark: streamSettings.SocketSettings.Mark,
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})
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}
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allocStrategy := receiverSettings.AllocationStrategy
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if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {
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return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
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}
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if allocStrategy.Type == proxyman.AllocationStrategy_Random {
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return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
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}
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return nil, newError("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
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}
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func init() {
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common.Must(common.RegisterConfig((*proxyman.InboundConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
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return New(ctx, config.(*proxyman.InboundConfig))
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}))
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common.Must(common.RegisterConfig((*core.InboundHandlerConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
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return NewHandler(ctx, config.(*core.InboundHandlerConfig))
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}))
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}
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