Moved GetUser and GetPassword to openvpn params getters

internal/params/openvpn.go

@@ -1,10 +1,46 @@
 package params
 
 import (
+	"fmt"
+
 	libparams "github.com/qdm12/golibs/params"
 	"github.com/qdm12/private-internet-access-docker/internal/models"
 )
 
+// GetUser obtains the user to use to connect to the VPN servers
+func (p *paramsReader) GetUser() (s string, err error) {
+	defer func() {
+		unsetenvErr := p.unsetEnv("USER")
+		if err == nil {
+			err = unsetenvErr
+		}
+	}()
+	s, err = p.envParams.GetEnv("USER")
+	if err != nil {
+		return "", err
+	} else if len(s) == 0 {
+		return s, fmt.Errorf("USER environment variable cannot be empty")
+	}
+	return s, nil
+}
+
+// GetPassword obtains the password to use to connect to the VPN servers
+func (p *paramsReader) GetPassword() (s string, err error) {
+	defer func() {
+		unsetenvErr := p.unsetEnv("PASSWORD")
+		if err == nil {
+			err = unsetenvErr
+		}
+	}()
+	s, err = p.envParams.GetEnv("PASSWORD")
+	if err != nil {
+		return "", err
+	} else if len(s) == 0 {
+		return s, fmt.Errorf("PASSWORD environment variable cannot be empty")
+	}
+	return s, nil
+}
+
 // GetNetworkProtocol obtains the network protocol to use to connect to the
 // VPN servers from the environment variable PROTOCOL
 func (p *paramsReader) GetNetworkProtocol() (protocol models.NetworkProtocol, err error) {