Files
netbird/client/cmd/vnc_agent.go

64 lines
1.8 KiB
Go

//go:build windows || (darwin && !ios)
package cmd
import (
"fmt"
"net/netip"
"os"
log "github.com/sirupsen/logrus"
"github.com/spf13/cobra"
vncserver "github.com/netbirdio/netbird/client/vnc/server"
)
var vncAgentPort uint16
func init() {
vncAgentCmd.Flags().Uint16Var(&vncAgentPort, "port", 15900, "Port for the VNC agent to listen on")
rootCmd.AddCommand(vncAgentCmd)
}
// vncAgentCmd runs a VNC server inside the user's interactive session,
// listening on localhost. The NetBird service spawns it: on Windows via
// CreateProcessAsUser into the console session, on macOS via
// launchctl asuser into the Aqua session.
var vncAgentCmd = &cobra.Command{
Use: "vnc-agent",
Short: "Run VNC capture agent (internal, spawned by service)",
Hidden: true,
RunE: func(cmd *cobra.Command, args []string) error {
log.SetReportCaller(true)
log.SetFormatter(&log.JSONFormatter{})
log.SetOutput(os.Stderr)
log.Infof("VNC agent starting on 127.0.0.1:%d", vncAgentPort)
token := os.Getenv("NB_VNC_AGENT_TOKEN")
if token == "" {
return fmt.Errorf("NB_VNC_AGENT_TOKEN not set; agent requires a token from the service")
}
capturer, injector, err := newAgentResources()
if err != nil {
return err
}
srv := vncserver.New(capturer, injector)
srv.SetDisableAuth(true)
srv.SetAgentToken(token)
addr := netip.AddrPortFrom(netip.AddrFrom4([4]byte{127, 0, 0, 1}), vncAgentPort)
loopback := netip.PrefixFrom(netip.AddrFrom4([4]byte{127, 0, 0, 0}), 8)
if err := srv.Start(cmd.Context(), addr, loopback); err != nil {
return fmt.Errorf("start vnc server: %w", err)
}
log.Infof("vnc-agent listening on 127.0.0.1:%d, ready", vncAgentPort)
<-cmd.Context().Done()
log.Info("vnc-agent context cancelled, shutting down")
return srv.Stop()
},
SilenceUsage: true,
}