sing-box/box.go

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package box
import (
"context"
"fmt"
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"io"
"os"
"runtime/debug"
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"time"
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"github.com/sagernet/sing-box/adapter"
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C "github.com/sagernet/sing-box/constant"
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"github.com/sagernet/sing-box/experimental"
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"github.com/sagernet/sing-box/experimental/libbox/platform"
"github.com/sagernet/sing-box/inbound"
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"github.com/sagernet/sing-box/log"
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"github.com/sagernet/sing-box/option"
"github.com/sagernet/sing-box/outbound"
"github.com/sagernet/sing-box/route"
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"github.com/sagernet/sing/common"
E "github.com/sagernet/sing/common/exceptions"
F "github.com/sagernet/sing/common/format"
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)
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var _ adapter.Service = (*Box)(nil)
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type Box struct {
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createdAt time.Time
router adapter.Router
inbounds []adapter.Inbound
outbounds []adapter.Outbound
logFactory log.Factory
logger log.ContextLogger
logFile *os.File
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clashServer adapter.ClashServer
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v2rayServer adapter.V2RayServer
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done chan struct{}
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}
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func New(ctx context.Context, options option.Options, platformInterface platform.Interface) (*Box, error) {
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createdAt := time.Now()
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experimentalOptions := common.PtrValueOrDefault(options.Experimental)
applyDebugOptions(common.PtrValueOrDefault(experimentalOptions.Debug))
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var needClashAPI bool
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var needV2RayAPI bool
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if experimentalOptions.ClashAPI != nil && experimentalOptions.ClashAPI.ExternalController != "" {
needClashAPI = true
}
if experimentalOptions.V2RayAPI != nil && experimentalOptions.V2RayAPI.Listen != "" {
needV2RayAPI = true
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}
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logOptions := common.PtrValueOrDefault(options.Log)
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var logFactory log.Factory
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var observableLogFactory log.ObservableFactory
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var logFile *os.File
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var logWriter io.Writer
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if logOptions.Disabled {
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observableLogFactory = log.NewNOPFactory()
logFactory = observableLogFactory
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} else {
switch logOptions.Output {
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case "":
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if platformInterface != nil {
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logWriter = io.Discard
} else {
logWriter = os.Stdout
}
case "stderr":
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logWriter = os.Stderr
case "stdout":
logWriter = os.Stdout
default:
var err error
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logFile, err = os.OpenFile(C.BasePath(logOptions.Output), os.O_APPEND|os.O_CREATE|os.O_WRONLY, 0o644)
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if err != nil {
return nil, err
}
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logWriter = logFile
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}
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logFormatter := log.Formatter{
BaseTime: createdAt,
DisableColors: logOptions.DisableColor || logFile != nil,
DisableTimestamp: !logOptions.Timestamp && logFile != nil,
FullTimestamp: logOptions.Timestamp,
TimestampFormat: "-0700 2006-01-02 15:04:05",
}
if needClashAPI {
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observableLogFactory = log.NewObservableFactory(logFormatter, logWriter, platformInterface)
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logFactory = observableLogFactory
} else {
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logFactory = log.NewFactory(logFormatter, logWriter, platformInterface)
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}
if logOptions.Level != "" {
logLevel, err := log.ParseLevel(logOptions.Level)
if err != nil {
return nil, E.Cause(err, "parse log level")
}
logFactory.SetLevel(logLevel)
} else {
logFactory.SetLevel(log.LevelTrace)
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}
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}
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router, err := route.NewRouter(
ctx,
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logFactory,
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common.PtrValueOrDefault(options.Route),
common.PtrValueOrDefault(options.DNS),
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common.PtrValueOrDefault(options.NTP),
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options.Inbounds,
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platformInterface,
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)
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if err != nil {
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return nil, E.Cause(err, "parse route options")
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}
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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
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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,
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platformInterface,
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)
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if err != nil {
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return nil, E.Cause(err, "parse inbound[", i, "]")
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}
inbounds = append(inbounds, in)
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}
for i, outboundOptions := range options.Outbounds {
var out adapter.Outbound
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var tag string
if outboundOptions.Tag != "" {
tag = outboundOptions.Tag
} else {
tag = F.ToString(i)
}
out, err = outbound.New(
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ctx,
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router,
logFactory.NewLogger(F.ToString("outbound/", outboundOptions.Type, "[", tag, "]")),
outboundOptions)
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if err != nil {
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return nil, E.Cause(err, "parse outbound[", i, "]")
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}
outbounds = append(outbounds, out)
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}
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err = router.Initialize(inbounds, outbounds, func() adapter.Outbound {
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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
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}
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var clashServer adapter.ClashServer
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var v2rayServer adapter.V2RayServer
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if needClashAPI {
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clashServer, err = experimental.NewClashServer(router, observableLogFactory, common.PtrValueOrDefault(options.Experimental.ClashAPI))
if err != nil {
return nil, E.Cause(err, "create clash api server")
}
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router.SetClashServer(clashServer)
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}
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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)
}
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return &Box{
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router: router,
inbounds: inbounds,
outbounds: outbounds,
createdAt: createdAt,
logFactory: logFactory,
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logger: logFactory.Logger(),
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logFile: logFile,
clashServer: clashServer,
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v2rayServer: v2rayServer,
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done: make(chan struct{}),
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}, nil
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}
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func (s *Box) Start() error {
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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))
}
}()
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s.Close()
}
return err
}
func (s *Box) start() error {
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if s.clashServer != nil {
err := s.clashServer.Start()
if err != nil {
return E.Cause(err, "start clash api server")
}
}
if s.v2rayServer != nil {
err := s.v2rayServer.Start()
if err != nil {
return E.Cause(err, "start v2ray api server")
}
}
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for i, out := range s.outbounds {
if starter, isStarter := out.(common.Starter); isStarter {
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err := starter.Start()
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if err != nil {
var tag string
if out.Tag() == "" {
tag = F.ToString(i)
} else {
tag = out.Tag()
}
return E.Cause(err, "initialize outbound/", out.Type(), "[", tag, "]")
}
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}
}
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err := s.router.Start()
if err != nil {
return err
}
for i, in := range s.inbounds {
err = in.Start()
if err != nil {
var tag string
if in.Tag() == "" {
tag = F.ToString(i)
} else {
tag = in.Tag()
}
return E.Cause(err, "initialize inbound/", in.Type(), "[", tag, "]")
}
}
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s.logger.Info("sing-box started (", F.Seconds(time.Since(s.createdAt).Seconds()), "s)")
return nil
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}
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func (s *Box) Close() error {
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select {
case <-s.done:
return os.ErrClosed
default:
close(s.done)
}
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var errors error
for i, in := range s.inbounds {
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 {
errors = E.Append(errors, common.Close(out), func(err error) error {
return E.Cause(err, "close inbound/", out.Type(), "[", i, "]")
})
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}
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if err := common.Close(s.router); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close router")
})
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}
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if err := common.Close(s.logFactory); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close log factory")
})
}
if err := common.Close(s.clashServer); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close clash api server")
})
}
if err := common.Close(s.v2rayServer); err != nil {
errors = E.Append(errors, err, func(err error) error {
return E.Cause(err, "close v2ray api server")
})
}
if s.logFile != nil {
errors = E.Append(errors, s.logFile.Close(), func(err error) error {
return E.Cause(err, "close log file")
})
}
return errors
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}
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func (s *Box) Router() adapter.Router {
return s.router
}