115 lines
3.1 KiB
Go
115 lines
3.1 KiB
Go
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package cyberghost
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import (
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"fmt"
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"net"
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"strings"
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"github.com/qdm12/golibs/files"
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"github.com/qdm12/private-internet-access-docker/internal/constants"
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"github.com/qdm12/private-internet-access-docker/internal/models"
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)
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func (c *configurator) GetOpenVPNConnections(group models.CyberghostGroup, region models.CyberghostRegion, protocol models.NetworkProtocol, targetIP net.IP) (connections []models.OpenVPNConnection, err error) {
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var IPs []net.IP
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for _, server := range constants.CyberghostServers() {
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if strings.EqualFold(string(server.Region), string(region)) && strings.EqualFold(string(server.Group), string(group)) {
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IPs = server.IPs
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}
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}
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if len(IPs) == 0 {
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return nil, fmt.Errorf("no IP found for group %q and region %q", group, region)
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}
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if targetIP != nil {
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found := false
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for i := range IPs {
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if IPs[i].Equal(targetIP) {
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found = true
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break
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}
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}
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if !found {
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return nil, fmt.Errorf("target IP address %q not found in IP addresses", targetIP)
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}
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IPs = []net.IP{targetIP}
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}
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for _, IP := range IPs {
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connections = append(connections, models.OpenVPNConnection{IP: IP, Port: 1443, Protocol: protocol})
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}
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return connections, nil
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}
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func (c *configurator) BuildConf(connections []models.OpenVPNConnection, clientKey string, verbosity, uid, gid int, root bool, cipher, auth string) (err error) {
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if len(cipher) == 0 {
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cipher = "AES-256-CBC"
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}
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if len(auth) == 0 {
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auth = "SHA256"
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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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"persist-tun",
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"remote-cert-tls server",
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// Cyberghost specific
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"resolv-retry infinite",
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"redirect-gateway def1",
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"ncp-disable",
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"ping 5",
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"ping-exit 60",
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"ping-timer-rem",
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"script-security 2",
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"route-delay 5",
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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", string(connections[0].Protocol)),
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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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for _, connection := range connections {
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lines = append(lines, fmt.Sprintf("remote %s %d", connection.IP.String(), connection.Port))
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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.CyberghostCertificate,
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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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"<crt>",
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"-----BEGIN CERTIFICATE-----",
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constants.CyberghostClientCertificate,
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"-----END CERTIFICATE-----",
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"</crt>",
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}...)
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lines = append(lines, []string{
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"<key>",
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"-----BEGIN PRIVATE KEY-----",
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clientKey,
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"-----END PRIVATE KEY-----",
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"</key>",
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"",
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}...)
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return c.fileManager.WriteLinesToFile(string(constants.OpenVPNConf), lines, files.Ownership(uid, gid), files.Permissions(0400))
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}
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