Feat: WeVPN support (#591)

internal/provider/wevpn/openvpnconf.go

@@ -0,0 +1,84 @@
+package wevpn
+
+import (
+	"strconv"
+
+	"github.com/qdm12/gluetun/internal/configuration"
+	"github.com/qdm12/gluetun/internal/constants"
+	"github.com/qdm12/gluetun/internal/models"
+	"github.com/qdm12/gluetun/internal/provider/utils"
+)
+
+func (w *Wevpn) BuildConf(connection models.Connection,
+	settings configuration.OpenVPN) (lines []string, err error) {
+	if settings.Cipher == "" {
+		settings.Cipher = constants.AES256gcm
+	}
+
+	if settings.Auth == "" {
+		settings.Auth = constants.SHA512
+	}
+
+	lines = []string{
+		"client",
+		"nobind",
+		"tls-exit",
+		"dev " + settings.Interface,
+		"verb " + strconv.Itoa(settings.Verbosity),
+
+		// Wevpn specific
+		"ping 30",
+		"remote-cert-tls server",
+		"redirect-gateway def1 bypass-dhcp",
+		"reneg-sec 0",
+		"auth-user-pass " + constants.OpenVPNAuthConf,
+		"auth " + settings.Auth,
+
+		// Added constant values
+		"auth-nocache",
+		"mute-replay-warnings",
+		"pull-filter ignore \"auth-token\"", // prevent auth failed loops
+		"auth-retry nointeract",
+		"suppress-timestamps",
+
+		// Modified variables
+		connection.OpenVPNProtoLine(),
+		connection.OpenVPNRemoteLine(),
+	}
+
+	if connection.Protocol == constants.UDP {
+		lines = append(lines, "explicit-exit-notify")
+	}
+
+	lines = append(lines, utils.CipherLines(settings.Cipher, settings.Version)...)
+
+	if !settings.Root {
+		lines = append(lines, "user "+settings.ProcUser)
+		lines = append(lines, "persist-tun")
+		lines = append(lines, "persist-key")
+	}
+
+	if settings.MSSFix > 0 {
+		lines = append(lines, "mssfix "+strconv.Itoa(int(settings.MSSFix)))
+	}
+
+	if settings.IPv6 {
+		lines = append(lines, "tun-ipv6")
+	} else {
+		lines = append(lines, `pull-filter ignore "route-ipv6"`)
+		lines = append(lines, `pull-filter ignore "ifconfig-ipv6"`)
+	}
+
+	lines = append(lines, utils.WrapOpenvpnKey(
+		settings.ClientKey)...)
+	lines = append(lines, utils.WrapOpenvpnCA(
+		constants.WevpnCA)...)
+	lines = append(lines, utils.WrapOpenvpnCert(
+		constants.WevpnCertificate)...)
+	lines = append(lines, utils.WrapOpenvpnTLSCrypt(
+		constants.WevpnOpenvpnStaticKeyV1)...)
+
+	lines = append(lines, "")
+
+	return lines, nil
+}