sing-box/box.go
2023-04-08 08:09:28 +08:00

315 lines
8.3 KiB
Go

package box
import (
"context"
"fmt"
"io"
"os"
"runtime/debug"
"time"
"github.com/sagernet/sing-box/adapter"
"github.com/sagernet/sing-box/experimental"
"github.com/sagernet/sing-box/experimental/libbox/platform"
"github.com/sagernet/sing-box/inbound"
"github.com/sagernet/sing-box/log"
"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/outbound"
"github.com/sagernet/sing-box/route"
"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
)
var _ adapter.Service = (*Box)(nil)
type Box struct {
createdAt time.Time
router adapter.Router
inbounds []adapter.Inbound
outbounds []adapter.Outbound
logFactory log.Factory
logger log.ContextLogger
preServices map[string]adapter.Service
postServices map[string]adapter.Service
done chan struct{}
}
type Options struct {
option.Options
Context context.Context
PlatformInterface platform.Interface
}
func New(options Options) (*Box, error) {
ctx := options.Context
if ctx == nil {
ctx = context.Background()
}
createdAt := time.Now()
experimentalOptions := common.PtrValueOrDefault(options.Experimental)
applyDebugOptions(common.PtrValueOrDefault(experimentalOptions.Debug))
var needClashAPI bool
var needV2RayAPI bool
if experimentalOptions.ClashAPI != nil && experimentalOptions.ClashAPI.ExternalController != "" {
needClashAPI = true
}
if experimentalOptions.V2RayAPI != nil && experimentalOptions.V2RayAPI.Listen != "" {
needV2RayAPI = true
}
var defaultLogWriter io.Writer
if options.PlatformInterface != nil {
defaultLogWriter = io.Discard
}
logFactory, err := log.New(log.Options{
Options: common.PtrValueOrDefault(options.Log),
Observable: needClashAPI,
DefaultWriter: defaultLogWriter,
BaseTime: createdAt,
PlatformWriter: options.PlatformInterface,
})
if err != nil {
return nil, E.Cause(err, "create log factory")
}
router, err := route.NewRouter(
ctx,
logFactory,
common.PtrValueOrDefault(options.Route),
common.PtrValueOrDefault(options.DNS),
common.PtrValueOrDefault(options.NTP),
options.Inbounds,
options.PlatformInterface,
)
if err != nil {
return nil, E.Cause(err, "parse route options")
}
inbounds := make([]adapter.Inbound, 0, len(options.Inbounds))
outbounds := make([]adapter.Outbound, 0, len(options.Outbounds))
for i, inboundOptions := range options.Inbounds {
var in adapter.Inbound
var tag string
if inboundOptions.Tag != "" {
tag = inboundOptions.Tag
} else {
tag = F.ToString(i)
}
in, err = inbound.New(
ctx,
router,
logFactory.NewLogger(F.ToString("inbound/", inboundOptions.Type, "[", tag, "]")),
inboundOptions,
options.PlatformInterface,
)
if err != nil {
return nil, E.Cause(err, "parse inbound[", i, "]")
}
inbounds = append(inbounds, in)
}
for i, outboundOptions := range options.Outbounds {
var out adapter.Outbound
var tag string
if outboundOptions.Tag != "" {
tag = outboundOptions.Tag
} else {
tag = F.ToString(i)
}
out, err = outbound.New(
ctx,
router,
logFactory.NewLogger(F.ToString("outbound/", outboundOptions.Type, "[", tag, "]")),
outboundOptions)
if err != nil {
return nil, E.Cause(err, "parse outbound[", i, "]")
}
outbounds = append(outbounds, out)
}
err = router.Initialize(inbounds, outbounds, func() adapter.Outbound {
out, oErr := outbound.New(ctx, router, logFactory.NewLogger("outbound/direct"), option.Outbound{Type: "direct", Tag: "default"})
common.Must(oErr)
outbounds = append(outbounds, out)
return out
})
if err != nil {
return nil, err
}
preServices := make(map[string]adapter.Service)
postServices := make(map[string]adapter.Service)
if needClashAPI {
clashServer, err := experimental.NewClashServer(router, logFactory.(log.ObservableFactory), common.PtrValueOrDefault(options.Experimental.ClashAPI))
if err != nil {
return nil, E.Cause(err, "create clash api server")
}
router.SetClashServer(clashServer)
preServices["clash api"] = clashServer
}
if needV2RayAPI {
v2rayServer, err := experimental.NewV2RayServer(logFactory.NewLogger("v2ray-api"), common.PtrValueOrDefault(options.Experimental.V2RayAPI))
if err != nil {
return nil, E.Cause(err, "create v2ray api server")
}
router.SetV2RayServer(v2rayServer)
preServices["v2ray api"] = v2rayServer
}
return &Box{
router: router,
inbounds: inbounds,
outbounds: outbounds,
createdAt: createdAt,
logFactory: logFactory,
logger: logFactory.Logger(),
preServices: preServices,
postServices: postServices,
done: make(chan struct{}),
}, nil
}
func (s *Box) PreStart() error {
err := s.preStart()
if err != nil {
// TODO: remove catch error
defer func() {
v := recover()
if v != nil {
log.Error(E.Cause(err, "origin error"))
debug.PrintStack()
panic("panic on early close: " + fmt.Sprint(v))
}
}()
s.Close()
return err
}
s.logger.Info("sing-box pre-started (", F.Seconds(time.Since(s.createdAt).Seconds()), "s)")
return nil
}
func (s *Box) Start() error {
err := s.start()
if err != nil {
// TODO: remove catch error
defer func() {
v := recover()
if v != nil {
log.Error(E.Cause(err, "origin error"))
debug.PrintStack()
panic("panic on early close: " + fmt.Sprint(v))
}
}()
s.Close()
return err
}
s.logger.Info("sing-box started (", F.Seconds(time.Since(s.createdAt).Seconds()), "s)")
return nil
}
func (s *Box) preStart() error {
for serviceName, service := range s.preServices {
s.logger.Trace("pre-start ", serviceName)
err := adapter.PreStart(service)
if err != nil {
return E.Cause(err, "pre-starting ", serviceName)
}
}
for i, out := range s.outbounds {
var tag string
if out.Tag() == "" {
tag = F.ToString(i)
} else {
tag = out.Tag()
}
if starter, isStarter := out.(common.Starter); isStarter {
s.logger.Trace("initializing outbound/", out.Type(), "[", tag, "]")
err := starter.Start()
if err != nil {
return E.Cause(err, "initialize outbound/", out.Type(), "[", tag, "]")
}
}
}
return s.router.Start()
}
func (s *Box) start() error {
err := s.preStart()
if err != nil {
return err
}
for serviceName, service := range s.preServices {
s.logger.Trace("starting ", serviceName)
err = service.Start()
if err != nil {
return E.Cause(err, "start ", serviceName)
}
}
for i, in := range s.inbounds {
var tag string
if in.Tag() == "" {
tag = F.ToString(i)
} else {
tag = in.Tag()
}
s.logger.Trace("initializing inbound/", in.Type(), "[", tag, "]")
err = in.Start()
if err != nil {
return E.Cause(err, "initialize inbound/", in.Type(), "[", tag, "]")
}
}
for serviceName, service := range s.postServices {
s.logger.Trace("starting ", service)
err = service.Start()
if err != nil {
return E.Cause(err, "start ", serviceName)
}
}
return nil
}
func (s *Box) Close() error {
select {
case <-s.done:
return os.ErrClosed
default:
close(s.done)
}
var errors error
for serviceName, service := range s.postServices {
s.logger.Trace("closing ", serviceName)
errors = E.Append(errors, service.Close(), func(err error) error {
return E.Cause(err, "close ", serviceName)
})
}
for i, in := range s.inbounds {
s.logger.Trace("closing inbound/", in.Type(), "[", i, "]")
errors = E.Append(errors, in.Close(), func(err error) error {
return E.Cause(err, "close inbound/", in.Type(), "[", i, "]")
})
}
for i, out := range s.outbounds {
s.logger.Trace("closing outbound/", out.Type(), "[", i, "]")
errors = E.Append(errors, common.Close(out), func(err error) error {
return E.Cause(err, "close outbound/", out.Type(), "[", i, "]")
})
}
s.logger.Trace("closing router")
if err := common.Close(s.router); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close router")
})
}
for serviceName, service := range s.preServices {
s.logger.Trace("closing ", serviceName)
errors = E.Append(errors, service.Close(), func(err error) error {
return E.Cause(err, "close ", serviceName)
})
}
s.logger.Trace("closing log factory")
if err := common.Close(s.logFactory); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close log factory")
})
}
return errors
}
func (s *Box) Router() adapter.Router {
return s.router
}