chore(vpn): add check for empty public key for Wireguard

internal/provider/ivpn/connection_test.go

@@ -72,7 +72,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 		},
 		"default Wireguard port": {
 			filteredServers: []models.Server{
-				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}},
+				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}, WgPubKey: "x"},
 			},
 			selection: settings.ServerSelection{
 				VPN: vpn.Wireguard,
@@ -82,6 +82,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 				IP:       net.IPv4(1, 1, 1, 1),
 				Port:     58237,
 				Protocol: constants.UDP,
+				PubKey:   "x",
 			},
 		},
 	}

internal/provider/mullvad/connection_test.go

@@ -72,7 +72,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 		},
 		"default Wireguard port": {
 			filteredServers: []models.Server{
-				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}},
+				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}, WgPubKey: "x"},
 			},
 			selection: settings.ServerSelection{
 				VPN: vpn.Wireguard,
@@ -82,6 +82,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 				IP:       net.IPv4(1, 1, 1, 1),
 				Port:     51820,
 				Protocol: constants.UDP,
+				PubKey:   "x",
 			},
 		},
 	}

internal/provider/utils/connection.go

@@ -1,6 +1,7 @@
 package utils
 
 import (
+	"errors"
 	"fmt"
 	"math/rand"
 
@@ -29,6 +30,10 @@ type Storage interface {
 		servers []models.Server, err error)
 }
 
+var (
+	ErrWireguardPublicKeyMissing = errors.New("wireguard public key is missing")
+)
+
 func GetConnection(provider string,
 	storage Storage,
 	selection settings.ServerSelection,
@@ -52,6 +57,11 @@ func GetConnection(provider string,
 				continue
 			}
 
+			if selection.VPN == vpn.Wireguard && server.WgPubKey == "" {
+				return connection, fmt.Errorf("%w: for server hostname %s and ip %s",
+					ErrWireguardPublicKeyMissing, server.Hostname, ip)
+			}
+
 			hostname := server.Hostname
 			if selection.VPN == vpn.OpenVPN && server.OvpnX509 != "" {
 				// For Windscribe where hostname and

internal/provider/wevpn/connection_test.go

@@ -72,7 +72,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 		},
 		"default Wireguard port": {
 			filteredServers: []models.Server{
-				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}},
+				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}, WgPubKey: "x"},
 			},
 			selection: settings.ServerSelection{
 				VPN: vpn.Wireguard,

internal/provider/windscribe/connection_test.go

@@ -73,7 +73,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 		},
 		"default Wireguard port": {
 			filteredServers: []models.Server{
-				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}},
+				{IPs: []net.IP{net.IPv4(1, 1, 1, 1)}, WgPubKey: "x"},
 			},
 			selection: settings.ServerSelection{
 				VPN: vpn.Wireguard,
@@ -83,6 +83,7 @@ func Test_Provider_GetConnection(t *testing.T) {
 				IP:       net.IPv4(1, 1, 1, 1),
 				Port:     1194,
 				Protocol: constants.UDP,
+				PubKey:   "x",
 			},
 		},
 	}