67 lines
1.5 KiB
Go
67 lines
1.5 KiB
Go
package env
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import (
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"errors"
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"fmt"
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"strings"
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"github.com/qdm12/gluetun/internal/configuration/settings"
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"github.com/qdm12/gluetun/internal/constants"
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"github.com/qdm12/govalid/port"
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)
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func (s *Source) readOpenVPNSelection() (
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selection settings.OpenVPNSelection, err error) {
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confFile := getCleanedEnv("OPENVPN_CUSTOM_CONFIG")
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if confFile != "" {
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selection.ConfFile = &confFile
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}
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selection.TCP, err = s.readOpenVPNProtocol()
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if err != nil {
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return selection, err
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}
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selection.CustomPort, err = s.readOpenVPNCustomPort()
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if err != nil {
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return selection, err
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}
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selection.PIAEncPreset = s.readPIAEncryptionPreset()
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return selection, nil
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}
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var ErrOpenVPNProtocolNotValid = errors.New("OpenVPN protocol is not valid")
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func (s *Source) readOpenVPNProtocol() (tcp *bool, err error) {
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envKey, protocol := s.getEnvWithRetro("OPENVPN_PROTOCOL", "PROTOCOL")
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switch strings.ToLower(protocol) {
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case "":
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return nil, nil //nolint:nilnil
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case constants.UDP:
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return boolPtr(false), nil
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case constants.TCP:
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return boolPtr(true), nil
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default:
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return nil, fmt.Errorf("environment variable %s: %w: %s",
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envKey, ErrOpenVPNProtocolNotValid, protocol)
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}
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}
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func (s *Source) readOpenVPNCustomPort() (customPort *uint16, err error) {
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key, value := s.getEnvWithRetro("VPN_ENDPOINT_PORT", "PORT", "OPENVPN_PORT")
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if value == "" {
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return nil, nil //nolint:nilnil
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}
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customPort = new(uint16)
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*customPort, err = port.Validate(value)
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if err != nil {
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return nil, fmt.Errorf("environment variable %s: %w", key, err)
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}
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return customPort, nil
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}
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