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mirror of https://github.com/v2fly/v2ray-core.git synced 2024-12-22 18:17:52 -05:00
v2fly/shell/point/point.go
2016-04-26 00:13:26 +02:00

214 lines
6.4 KiB
Go

// Package point is a shell of V2Ray to run on various of systems.
// Point server is a full functionality proxying system. It consists of an inbound and an outbound
// connection, as well as any number of inbound and outbound detours. It provides a way internally
// to route network packets.
package point
import (
"github.com/v2ray/v2ray-core/app"
"github.com/v2ray/v2ray-core/app/dispatcher"
"github.com/v2ray/v2ray-core/app/proxyman"
"github.com/v2ray/v2ray-core/app/router"
"github.com/v2ray/v2ray-core/common/log"
v2net "github.com/v2ray/v2ray-core/common/net"
"github.com/v2ray/v2ray-core/common/retry"
"github.com/v2ray/v2ray-core/proxy"
proxyrepo "github.com/v2ray/v2ray-core/proxy/repo"
"github.com/v2ray/v2ray-core/transport/ray"
)
// Point shell of V2Ray.
type Point struct {
port v2net.Port
ich proxy.InboundHandler
och proxy.OutboundHandler
idh []InboundDetourHandler
taggedIdh map[string]InboundDetourHandler
odh map[string]proxy.OutboundHandler
router router.Router
space *app.SpaceController
}
// NewPoint returns a new Point server based on given configuration.
// The server is not started at this point.
func NewPoint(pConfig *Config) (*Point, error) {
var vpoint = new(Point)
vpoint.port = pConfig.Port
if pConfig.LogConfig != nil {
logConfig := pConfig.LogConfig
if len(logConfig.AccessLog) > 0 {
err := log.InitAccessLogger(logConfig.AccessLog)
if err != nil {
return nil, err
}
}
if len(logConfig.ErrorLog) > 0 {
err := log.InitErrorLogger(logConfig.ErrorLog)
if err != nil {
return nil, err
}
}
log.SetLogLevel(logConfig.LogLevel)
}
vpoint.space = app.NewController()
vpoint.space.Bind(dispatcher.APP_ID, vpoint)
vpoint.space.Bind(proxyman.APP_ID_INBOUND_MANAGER, vpoint)
ichConfig := pConfig.InboundConfig.Settings
ich, err := proxyrepo.CreateInboundHandler(pConfig.InboundConfig.Protocol, vpoint.space.ForContext("vpoint-default-inbound"), ichConfig)
if err != nil {
log.Error("Failed to create inbound connection handler: ", err)
return nil, err
}
vpoint.ich = ich
ochConfig := pConfig.OutboundConfig.Settings
och, err := proxyrepo.CreateOutboundHandler(pConfig.OutboundConfig.Protocol, vpoint.space.ForContext("vpoint-default-outbound"), ochConfig)
if err != nil {
log.Error("Failed to create outbound connection handler: ", err)
return nil, err
}
vpoint.och = och
vpoint.taggedIdh = make(map[string]InboundDetourHandler)
detours := pConfig.InboundDetours
if len(detours) > 0 {
vpoint.idh = make([]InboundDetourHandler, len(detours))
for idx, detourConfig := range detours {
allocConfig := detourConfig.Allocation
var detourHandler InboundDetourHandler
switch allocConfig.Strategy {
case AllocationStrategyAlways:
dh, err := NewInboundDetourHandlerAlways(vpoint.space.ForContext(detourConfig.Tag), detourConfig)
if err != nil {
log.Error("Point: Failed to create detour handler: ", err)
return nil, ErrorBadConfiguration
}
detourHandler = dh
case AllocationStrategyRandom:
dh, err := NewInboundDetourHandlerDynamic(vpoint.space.ForContext(detourConfig.Tag), detourConfig)
if err != nil {
log.Error("Point: Failed to create detour handler: ", err)
return nil, ErrorBadConfiguration
}
detourHandler = dh
default:
log.Error("Point: Unknown allocation strategy: ", allocConfig.Strategy)
return nil, ErrorBadConfiguration
}
vpoint.idh[idx] = detourHandler
if len(detourConfig.Tag) > 0 {
vpoint.taggedIdh[detourConfig.Tag] = detourHandler
}
}
}
outboundDetours := pConfig.OutboundDetours
if len(outboundDetours) > 0 {
vpoint.odh = make(map[string]proxy.OutboundHandler)
for _, detourConfig := range outboundDetours {
detourHandler, err := proxyrepo.CreateOutboundHandler(detourConfig.Protocol, vpoint.space.ForContext(detourConfig.Tag), detourConfig.Settings)
if err != nil {
log.Error("Failed to create detour outbound connection handler: ", err)
return nil, err
}
vpoint.odh[detourConfig.Tag] = detourHandler
}
}
routerConfig := pConfig.RouterConfig
if routerConfig != nil {
r, err := router.CreateRouter(routerConfig.Strategy, routerConfig.Settings)
if err != nil {
log.Error("Failed to create router: ", err)
return nil, ErrorBadConfiguration
}
vpoint.router = r
}
return vpoint, nil
}
func (this *Point) Close() {
this.ich.Close()
for _, idh := range this.idh {
idh.Close()
}
}
// Start starts the Point server, and return any error during the process.
// In the case of any errors, the state of the server is unpredicatable.
func (this *Point) Start() error {
if this.port <= 0 {
log.Error("Invalid port ", this.port)
return ErrorBadConfiguration
}
err := retry.Timed(100 /* times */, 100 /* ms */).On(func() error {
err := this.ich.Listen(this.port)
if err != nil {
return err
}
log.Warning("Point server started on port ", this.port)
return nil
})
if err != nil {
return err
}
for _, detourHandler := range this.idh {
err := detourHandler.Start()
if err != nil {
return err
}
}
return nil
}
// Dispatches a Packet to an OutboundConnection.
// The packet will be passed through the router (if configured), and then sent to an outbound
// connection with matching tag.
func (this *Point) DispatchToOutbound(context app.Context, destination v2net.Destination) ray.InboundRay {
direct := ray.NewRay()
dispatcher := this.och
if this.router != nil {
if tag, err := this.router.TakeDetour(destination); err == nil {
if handler, found := this.odh[tag]; found {
log.Info("Point: Taking detour [", tag, "] for [", destination, "]")
dispatcher = handler
} else {
log.Warning("Point: Unable to find routing destination: ", tag)
}
}
}
go this.FilterPacketAndDispatch(destination, direct, dispatcher)
return direct
}
func (this *Point) FilterPacketAndDispatch(destination v2net.Destination, link ray.OutboundRay, dispatcher proxy.OutboundHandler) {
payload, err := link.OutboundInput().Read()
if err != nil {
log.Info("Point: No payload to dispatch, stopping dispatching now.")
link.OutboundOutput().Close()
link.OutboundInput().Release()
return
}
dispatcher.Dispatch(destination, payload, link)
}
func (this *Point) GetHandler(context app.Context, tag string) (proxy.InboundHandler, int) {
handler, found := this.taggedIdh[tag]
if !found {
log.Warning("Point: Unable to find an inbound handler with tag: ", tag)
return nil, 0
}
return handler.GetConnectionHandler()
}