138 lines
3.6 KiB
Go
138 lines
3.6 KiB
Go
package provider
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import (
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"context"
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"fmt"
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"math/rand"
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"net"
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"net/http"
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"strings"
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"github.com/qdm12/gluetun/internal/constants"
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"github.com/qdm12/gluetun/internal/firewall"
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"github.com/qdm12/gluetun/internal/models"
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"github.com/qdm12/golibs/files"
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"github.com/qdm12/golibs/logging"
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)
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type windscribe struct {
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servers []models.WindscribeServer
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randSource rand.Source
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}
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func newWindscribe(servers []models.WindscribeServer, timeNow timeNowFunc) *windscribe {
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return &windscribe{
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servers: servers,
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randSource: rand.NewSource(timeNow().UnixNano()),
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}
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}
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func (w *windscribe) filterServers(region string) (servers []models.WindscribeServer) {
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if len(region) == 0 {
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return w.servers
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}
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for _, server := range w.servers {
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if strings.EqualFold(server.Region, region) {
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return []models.WindscribeServer{server}
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}
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}
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return nil
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}
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func (w *windscribe) GetOpenVPNConnection(selection models.ServerSelection) (connection models.OpenVPNConnection, err error) {
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var port uint16
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switch {
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case selection.CustomPort > 0:
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port = selection.CustomPort
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case selection.Protocol == constants.TCP:
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port = 1194
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case selection.Protocol == constants.UDP:
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port = 443
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default:
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return connection, fmt.Errorf("protocol %q is unknown", selection.Protocol)
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}
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if selection.TargetIP != nil {
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return models.OpenVPNConnection{IP: selection.TargetIP, Port: port, Protocol: selection.Protocol}, nil
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}
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servers := w.filterServers(selection.Region)
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if len(servers) == 0 {
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return connection, fmt.Errorf("no server found for region %q", selection.Region)
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}
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var connections []models.OpenVPNConnection
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for _, server := range servers {
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for _, IP := range server.IPs {
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connections = append(connections, models.OpenVPNConnection{IP: IP, Port: port, Protocol: selection.Protocol})
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}
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}
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return pickRandomConnection(connections, w.randSource), nil
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}
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func (w *windscribe) BuildConf(connection models.OpenVPNConnection, verbosity, uid, gid int, root bool, cipher, auth string, extras models.ExtraConfigOptions) (lines []string) {
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if len(cipher) == 0 {
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cipher = aes256cbc
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}
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if len(auth) == 0 {
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auth = "sha512"
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}
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lines = []string{
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"client",
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"dev tun",
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"nobind",
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"persist-key",
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"remote-cert-tls server",
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// Windscribe specific
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"comp-lzo",
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"key-direction 1",
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"script-security 2",
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// Added constant values
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"auth-nocache",
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"mute-replay-warnings",
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"pull-filter ignore \"auth-token\"", // prevent auth failed loops
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"auth-retry nointeract",
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"remote-random",
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"suppress-timestamps",
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// Modified variables
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fmt.Sprintf("verb %d", verbosity),
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fmt.Sprintf("auth-user-pass %s", constants.OpenVPNAuthConf),
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fmt.Sprintf("proto %s", connection.Protocol),
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fmt.Sprintf("remote %s %d", connection.IP, connection.Port),
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fmt.Sprintf("cipher %s", cipher),
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fmt.Sprintf("auth %s", auth),
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}
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if strings.HasSuffix(cipher, "-gcm") {
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lines = append(lines, "ncp-ciphers AES-256-GCM:AES-256-CBC:AES-128-GCM")
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}
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if !root {
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lines = append(lines, "user nonrootuser")
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}
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lines = append(lines, []string{
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"<ca>",
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"-----BEGIN CERTIFICATE-----",
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constants.WindscribeCertificate,
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"-----END CERTIFICATE-----",
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"</ca>",
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}...)
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lines = append(lines, []string{
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"<tls-auth>",
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"-----BEGIN OpenVPN Static key V1-----",
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constants.WindscribeOpenvpnStaticKeyV1,
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"-----END OpenVPN Static key V1-----",
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"</tls-auth>",
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"",
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}...)
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return lines
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}
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func (w *windscribe) PortForward(ctx context.Context, client *http.Client,
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fileManager files.FileManager, pfLogger logging.Logger, gateway net.IP, fw firewall.Configurator,
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syncState func(port uint16) (pfFilepath models.Filepath)) {
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panic("port forwarding is not supported for windscribe")
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}
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