safing-portmaster/spn/captain/intel.go

108 lines
2.8 KiB
Go

package captain
import (
"context"
"fmt"
"os"
"sync"
"github.com/safing/portmaster/service/mgr"
"github.com/safing/portmaster/service/updates"
"github.com/safing/portmaster/spn/conf"
"github.com/safing/portmaster/spn/hub"
"github.com/safing/portmaster/spn/navigator"
"github.com/safing/portmaster/spn/ships"
)
var (
intelResource *updates.Artifact
intelResourceName = "main-intel.yaml"
intelResourceMapName = "main"
intelResourceUpdateLock sync.Mutex
)
func registerIntelUpdateHook() error {
module.instance.IntelUpdates().EventResourcesUpdated.AddCallback("update SPN intel", func(wc *mgr.WorkerCtx, s struct{}) (cancel bool, err error) {
return false, updateSPNIntel(wc.Ctx(), nil)
})
module.instance.Config().EventConfigChange.AddCallback("update SPN intel", func(wc *mgr.WorkerCtx, s struct{}) (cancel bool, err error) {
return false, updateSPNIntel(wc.Ctx(), nil)
})
return nil
}
func updateSPNIntel(_ context.Context, _ interface{}) (err error) {
intelResourceUpdateLock.Lock()
defer intelResourceUpdateLock.Unlock()
// Only update SPN intel when using the matching map.
if conf.MainMapName != intelResourceMapName {
return fmt.Errorf("intel resource not for map %q", conf.MainMapName)
}
// Get possibly updated file.
file, err := module.instance.IntelUpdates().GetFile(intelResourceName)
if err != nil {
return fmt.Errorf("failed to get SPN intel update: %w", err)
}
// Check if file is newer.
// Continue on check failure.
newer, ok := file.IsNewerThan(intelResource)
if ok && !newer {
return nil
}
// Load intel file from disk.
intelData, err := os.ReadFile(file.Path())
if err != nil {
return fmt.Errorf("failed to load SPN intel update: %w", err)
}
// Parse and apply intel data.
intel, err := hub.ParseIntel(intelData)
if err != nil {
return fmt.Errorf("failed to parse SPN intel update: %w", err)
}
// Apply new intel.
setVirtualNetworkConfig(intel.VirtualNetworks)
err = navigator.Main.UpdateIntel(intel, cfgOptionTrustNodeNodes())
if err != nil {
return fmt.Errorf("failed to update intel on map: %w", err)
}
intelResource = file
return nil
}
func resetSPNIntel() {
intelResourceUpdateLock.Lock()
defer intelResourceUpdateLock.Unlock()
intelResource = nil
}
func setVirtualNetworkConfig(configs []*hub.VirtualNetworkConfig) {
// Do nothing if not public Hub.
if !conf.PublicHub() {
return
}
// Reset if there are no virtual networks configured.
if len(configs) == 0 {
ships.SetVirtualNetworkConfig(nil)
}
// Check if we are in a virtual network.
for _, config := range configs {
if _, ok := config.Mapping[publicIdentity.Hub.ID]; ok {
ships.SetVirtualNetworkConfig(config)
return
}
}
// If not, reset - we might have been in one before.
ships.SetVirtualNetworkConfig(nil)
}