Add per app proxy support for auto redirect

experimental/libbox/config.go

@@ -9,6 +9,7 @@ import (
 	"github.com/sagernet/sing-box"
 	"github.com/sagernet/sing-box/adapter"
 	"github.com/sagernet/sing-box/common/process"
+	"github.com/sagernet/sing-box/experimental/libbox/platform"
 	"github.com/sagernet/sing-box/option"
 	"github.com/sagernet/sing-tun"
 	"github.com/sagernet/sing/common/control"
@@ -97,6 +98,14 @@ func (s *platformInterfaceStub) FindProcessInfo(ctx context.Context, network str
 	return nil, os.ErrInvalid
 }
 
+func (s *platformInterfaceStub) PerAppProxyList() ([]uint32, error) {
+	return nil, os.ErrInvalid
+}
+
+func (s *platformInterfaceStub) PerAppProxyMode() int32 {
+	return platform.PerAppProxyModeDisabled
+}
+
 type interfaceMonitorStub struct{}
 
 func (s *interfaceMonitorStub) Start() error {

experimental/libbox/platform.go

@@ -22,6 +22,8 @@ type PlatformInterface interface {
 	IncludeAllNetworks() bool
 	ReadWIFIState() *WIFIState
 	ClearDNSCache()
+	PerAppProxyList() (IntegerIterator, error)
+	PerAppProxyMode() int32
 }
 
 type TunInterface interface {
@@ -54,6 +56,11 @@ type NetworkInterfaceIterator interface {
 	HasNext() bool
 }
 
+type IntegerIterator interface {
+	Next() int32
+	HasNext() bool
+}
+
 type OnDemandRule interface {
 	Target() int32
 	DNSSearchDomainMatch() StringIterator

experimental/libbox/platform/interface.go

@@ -11,6 +11,12 @@ import (
 	"github.com/sagernet/sing/common/logger"
 )
 
+const (
+	PerAppProxyModeDisabled int32 = iota
+	PerAppProxyModeExclude
+	PerAppProxyModeInclude
+)
+
 type Interface interface {
 	Initialize(ctx context.Context, router adapter.Router) error
 	UsePlatformAutoDetectInterfaceControl() bool
@@ -24,5 +30,7 @@ type Interface interface {
 	IncludeAllNetworks() bool
 	ClearDNSCache()
 	ReadWIFIState() adapter.WIFIState
+	PerAppProxyList() ([]uint32, error)
+	PerAppProxyMode() int32
 	process.Searcher
 }

experimental/libbox/service.go

@@ -229,6 +229,18 @@ func (w *platformInterfaceWrapper) ReadWIFIState() adapter.WIFIState {
 	return (adapter.WIFIState)(*wifiState)
 }
 
+func (w *platformInterfaceWrapper) PerAppProxyList() ([]uint32, error) {
+	uidIterator, err := w.iif.PerAppProxyList()
+	if err != nil {
+		return nil, err
+	}
+	return common.Map(iteratorToArray[int32](uidIterator), func(it int32) uint32 { return uint32(it) }), nil
+}
+
+func (w *platformInterfaceWrapper) PerAppProxyMode() int32 {
+	return w.iif.PerAppProxyMode()
+}
+
 func (w *platformInterfaceWrapper) DisableColors() bool {
 	return runtime.GOOS != "android"
 }