80 lines
2.7 KiB
Go
80 lines
2.7 KiB
Go
|
package service
|
||
|
|
|
||
|
|
import (
|
||
|
|
"errors"
|
||
|
|
"fmt"
|
||
|
|
"net/netip"
|
||
|
|
|
||
|
|
"github.com/qdm12/gluetun/internal/configuration/settings"
|
||
|
|
"github.com/qdm12/gluetun/internal/constants/providers"
|
||
|
|
"github.com/qdm12/gluetun/internal/provider"
|
||
|
|
"github.com/qdm12/gosettings"
|
||
|
|
)
|
||
|
|
|
||
|
|
type Settings struct {
|
||
|
|
UserSettings settings.PortForwarding
|
||
|
|
PortForwarder provider.PortForwarder
|
||
|
|
Gateway netip.Addr // needed for PIA and ProtonVPN
|
||
|
|
ServerName string // needed for PIA
|
||
|
|
Interface string // needed for PIA and ProtonVPN, tun0 for example
|
||
|
|
VPNProvider string // used to validate new settings
|
||
|
|
}
|
||
|
|
|
||
|
|
// UpdateWith deep copies the receiving settings, overrides the copy with
|
||
|
|
// fields set in the partialUpdate argument, validates the new settings
|
||
|
|
// and returns them if they are valid, or returns an error otherwise.
|
||
|
|
// In all cases, the receiving settings are unmodified.
|
||
|
|
func (s Settings) UpdateWith(partialUpdate Settings) (updatedSettings Settings, err error) {
|
||
|
|
updatedSettings = s.copy()
|
||
|
|
updatedSettings.overrideWith(partialUpdate)
|
||
|
|
err = updatedSettings.validate()
|
||
|
|
if err != nil {
|
||
|
|
return updatedSettings, fmt.Errorf("validating new settings: %w", err)
|
||
|
|
}
|
||
|
|
return updatedSettings, nil
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s Settings) copy() (copied Settings) {
|
||
|
|
copied.UserSettings = s.UserSettings.Copy()
|
||
|
|
copied.PortForwarder = s.PortForwarder
|
||
|
|
copied.Gateway = s.Gateway
|
||
|
|
copied.ServerName = s.ServerName
|
||
|
|
copied.Interface = s.Interface
|
||
|
|
copied.VPNProvider = s.VPNProvider
|
||
|
|
return copied
|
||
|
|
}
|
||
|
|
|
||
|
|
func (s *Settings) overrideWith(update Settings) {
|
||
|
|
s.UserSettings.OverrideWith(update.UserSettings)
|
||
|
|
s.PortForwarder = gosettings.OverrideWithInterface(s.PortForwarder, update.PortForwarder)
|
||
|
|
s.Gateway = gosettings.OverrideWithValidator(s.Gateway, update.Gateway)
|
||
|
|
s.ServerName = gosettings.OverrideWithString(s.ServerName, update.ServerName)
|
||
|
|
s.Interface = gosettings.OverrideWithString(s.Interface, update.Interface)
|
||
|
|
s.VPNProvider = gosettings.OverrideWithString(s.VPNProvider, update.VPNProvider)
|
||
|
|
}
|
||
|
|
|
||
|
|
var (
|
||
|
|
ErrVPNProviderNotSet = errors.New("VPN provider not set")
|
||
|
|
ErrServerNameNotSet = errors.New("server name not set")
|
||
|
|
ErrPortForwarderNotSet = errors.New("port forwarder not set")
|
||
|
|
ErrGatewayNotSet = errors.New("gateway not set")
|
||
|
|
ErrInterfaceNotSet = errors.New("interface not set")
|
||
|
|
)
|
||
|
|
|
||
|
|
func (s *Settings) validate() (err error) {
|
||
|
|
switch {
|
||
|
|
case s.VPNProvider == "":
|
||
|
|
return fmt.Errorf("%w", ErrVPNProviderNotSet)
|
||
|
|
case s.VPNProvider == providers.PrivateInternetAccess && s.ServerName == "":
|
||
|
|
return fmt.Errorf("%w", ErrServerNameNotSet)
|
||
|
|
case s.PortForwarder == nil:
|
||
|
|
return fmt.Errorf("%w", ErrPortForwarderNotSet)
|
||
|
|
case !s.Gateway.IsValid():
|
||
|
|
return fmt.Errorf("%w", ErrGatewayNotSet)
|
||
|
|
case s.Interface == "":
|
||
|
|
return fmt.Errorf("%w", ErrInterfaceNotSet)
|
||
|
|
}
|
||
|
|
|
||
|
|
return s.UserSettings.Validate(s.VPNProvider)
|
||
|
|
}
|