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v2fly/app/proxyman/inbound/inbound.go

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package inbound
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//go:generate go run github.com/v2fly/v2ray-core/v4/common/errors/errorgen
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import (
"context"
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"sync"
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core "github.com/v2fly/v2ray-core/v4"
"github.com/v2fly/v2ray-core/v4/app/proxyman"
"github.com/v2fly/v2ray-core/v4/common"
"github.com/v2fly/v2ray-core/v4/common/serial"
"github.com/v2fly/v2ray-core/v4/common/session"
"github.com/v2fly/v2ray-core/v4/features/inbound"
)
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// Manager is to manage all inbound handlers.
type Manager struct {
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access sync.RWMutex
untaggedHandler []inbound.Handler
taggedHandlers map[string]inbound.Handler
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running bool
}
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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) {
m := &Manager{
taggedHandlers: make(map[string]inbound.Handler),
}
return m, nil
}
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// Type implements common.HasType.
func (*Manager) Type() interface{} {
return inbound.ManagerType()
}
// AddHandler implements inbound.Manager.
func (m *Manager) AddHandler(ctx context.Context, handler inbound.Handler) error {
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m.access.Lock()
defer m.access.Unlock()
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tag := handler.Tag()
if len(tag) > 0 {
m.taggedHandlers[tag] = handler
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} else {
m.untaggedHandler = append(m.untaggedHandler, handler)
}
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if m.running {
return handler.Start()
}
return nil
}
// GetHandler implements inbound.Manager.
func (m *Manager) GetHandler(ctx context.Context, tag string) (inbound.Handler, error) {
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m.access.RLock()
defer m.access.RUnlock()
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handler, found := m.taggedHandlers[tag]
if !found {
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return nil, newError("handler not found: ", tag)
}
return handler, nil
}
// RemoveHandler implements inbound.Manager.
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func (m *Manager) RemoveHandler(ctx context.Context, tag string) error {
if tag == "" {
return common.ErrNoClue
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}
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m.access.Lock()
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 {
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)
return nil
}
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()
defer m.access.Unlock()
m.running = true
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for _, handler := range m.taggedHandlers {
if err := handler.Start(); err != nil {
return err
}
}
for _, handler := range m.untaggedHandler {
if err := handler.Start(); err != nil {
return err
}
}
return nil
}
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// Close implements common.Closable.
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func (m *Manager) Close() error {
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m.access.Lock()
defer m.access.Unlock()
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 {
errors = append(errors, err)
}
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}
for _, handler := range m.untaggedHandler {
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if err := handler.Close(); err != nil {
errors = append(errors, err)
}
}
if len(errors) > 0 {
return newError("failed to close all handlers").Base(newError(serial.Concat(errors...)))
}
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return nil
}
// NewHandler creates a new inbound.Handler based on the given config.
func NewHandler(ctx context.Context, config *core.InboundHandlerConfig) (inbound.Handler, error) {
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rawReceiverSettings, err := serial.GetInstanceOf(config.ReceiverSettings)
if err != nil {
return nil, err
}
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proxySettings, err := serial.GetInstanceOf(config.ProxySettings)
if err != nil {
return nil, err
}
tag := config.Tag
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receiverSettings, ok := rawReceiverSettings.(*proxyman.ReceiverConfig)
if !ok {
return nil, newError("not a ReceiverConfig").AtError()
}
streamSettings := receiverSettings.StreamSettings
if streamSettings != nil && streamSettings.SocketSettings != nil {
ctx = session.ContextWithSockopt(ctx, &session.Sockopt{
Mark: streamSettings.SocketSettings.Mark,
})
}
allocStrategy := receiverSettings.AllocationStrategy
if allocStrategy == nil || allocStrategy.Type == proxyman.AllocationStrategy_Always {
return NewAlwaysOnInboundHandler(ctx, tag, receiverSettings, proxySettings)
}
if allocStrategy.Type == proxyman.AllocationStrategy_Random {
return NewDynamicInboundHandler(ctx, tag, receiverSettings, proxySettings)
}
return nil, newError("unknown allocation strategy: ", receiverSettings.AllocationStrategy.Type).AtError()
}
func init() {
common.Must(common.RegisterConfig((*proxyman.InboundConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return New(ctx, config.(*proxyman.InboundConfig))
}))
common.Must(common.RegisterConfig((*core.InboundHandlerConfig)(nil), func(ctx context.Context, config interface{}) (interface{}, error) {
return NewHandler(ctx, config.(*core.InboundHandlerConfig))
}))
}