sing-box/experimental/libbox/monitor.go
2024-12-03 17:36:56 +08:00

92 lines
2.8 KiB
Go

package libbox
import (
"github.com/sagernet/sing-tun"
"github.com/sagernet/sing/common/control"
E "github.com/sagernet/sing/common/exceptions"
"github.com/sagernet/sing/common/logger"
"github.com/sagernet/sing/common/x/list"
)
var (
_ tun.DefaultInterfaceMonitor = (*platformDefaultInterfaceMonitor)(nil)
_ InterfaceUpdateListener = (*platformDefaultInterfaceMonitor)(nil)
)
type platformDefaultInterfaceMonitor struct {
*platformInterfaceWrapper
element *list.Element[tun.NetworkUpdateCallback]
callbacks list.List[tun.DefaultInterfaceUpdateCallback]
logger logger.Logger
}
func (m *platformDefaultInterfaceMonitor) Start() error {
return m.iif.StartDefaultInterfaceMonitor(m)
}
func (m *platformDefaultInterfaceMonitor) Close() error {
return m.iif.CloseDefaultInterfaceMonitor(m)
}
func (m *platformDefaultInterfaceMonitor) DefaultInterface() *control.Interface {
m.defaultInterfaceAccess.Lock()
defer m.defaultInterfaceAccess.Unlock()
return m.defaultInterface
}
func (m *platformDefaultInterfaceMonitor) OverrideAndroidVPN() bool {
return false
}
func (m *platformDefaultInterfaceMonitor) AndroidVPNEnabled() bool {
return false
}
func (m *platformDefaultInterfaceMonitor) RegisterCallback(callback tun.DefaultInterfaceUpdateCallback) *list.Element[tun.DefaultInterfaceUpdateCallback] {
m.defaultInterfaceAccess.Lock()
defer m.defaultInterfaceAccess.Unlock()
return m.callbacks.PushBack(callback)
}
func (m *platformDefaultInterfaceMonitor) UnregisterCallback(element *list.Element[tun.DefaultInterfaceUpdateCallback]) {
m.defaultInterfaceAccess.Lock()
defer m.defaultInterfaceAccess.Unlock()
m.callbacks.Remove(element)
}
func (m *platformDefaultInterfaceMonitor) UpdateDefaultInterface(interfaceName string, interfaceIndex32 int32, isExpensive bool, isConstrained bool) {
m.isExpensive = isExpensive
m.isConstrained = isConstrained
err := m.networkManager.UpdateInterfaces()
if err != nil {
m.logger.Error(E.Cause(err, "update interfaces"))
}
m.defaultInterfaceAccess.Lock()
if interfaceIndex32 == -1 {
m.defaultInterface = nil
callbacks := m.callbacks.Array()
m.defaultInterfaceAccess.Unlock()
for _, callback := range callbacks {
callback(tun.EventInterfaceUpdate)
}
return
}
oldInterface := m.defaultInterface
newInterface, err := m.networkManager.InterfaceFinder().ByIndex(int(interfaceIndex32))
if err != nil {
m.defaultInterfaceAccess.Unlock()
m.logger.Error(E.Cause(err, "find updated interface: ", interfaceName))
return
}
m.defaultInterface = newInterface
if oldInterface != nil && oldInterface.Name == m.defaultInterface.Name && oldInterface.Index == m.defaultInterface.Index {
m.defaultInterfaceAccess.Unlock()
return
}
callbacks := m.callbacks.Array()
m.defaultInterfaceAccess.Unlock()
for _, callback := range callbacks {
callback(tun.EventInterfaceUpdate)
}
}