Files
gluetun/internal/portforward/firewall.go
Quentin McGaw 2998cf5e48 Maint: port forwarding refactoring (#543)
- portforward package
- portforward run loop
- Less functional arguments and cycles
2021-07-28 08:35:44 -07:00

33 lines
877 B
Go

package portforward
import "context"
// firewallBlockPort obtains the state port thread safely and blocks
// it in the firewall if it is not the zero value (0).
func (l *Loop) firewallBlockPort(ctx context.Context) {
port := l.state.GetPortForwarded()
if port == 0 {
return
}
err := l.portAllower.RemoveAllowedPort(ctx, port)
if err != nil {
l.logger.Error("cannot block previous port in firewall: " + err.Error())
}
}
// firewallAllowPort obtains the state port thread safely and allows
// it in the firewall if it is not the zero value (0).
func (l *Loop) firewallAllowPort(ctx context.Context) {
port := l.state.GetPortForwarded()
if port == 0 {
return
}
startData := l.state.GetStartData()
err := l.portAllower.SetAllowedPort(ctx, port, startData.Interface)
if err != nil {
l.logger.Error("cannot allow port through firewall: " + err.Error())
}
}