add tun socket

1 files changed, 50 insertions, 0 deletions

diff --git a/cmd/tunneld/main.go b/cmd/tunneld/main.go
index b45f516..4ff23ba 100644
--- a/cmd/tunneld/main.go
+++ b/cmd/tunneld/main.go
@@ -5,9 +5,11 @@ import (
 	"errors"
 	"flag"
 	"fmt"
+	"io"
 	"log"
 	"log/syslog"
 	"os"
+	"os/exec"
 	"os/signal"
 	"os/user"
 	"path"
@@ -165,6 +167,42 @@ func updateSocketGroup(s *server.Server, group string) error {
 	return nil
 }
 
+func runCommand(s *server.Server, name string) error {
+	cmd := s.Env().Get(name)
+	if cmd == "" {
+		return nil
+	}
+
+	log.Printf("cmd \"%s\" try", cmd)
+
+	args := strings.Split(cmd, " ")
+	c := exec.Command(args[0], args[1:]...)
+
+	stdout, _ := c.StdoutPipe()
+	stderr, _ := c.StderrPipe()
+
+	if err := c.Start(); err != nil {
+		return fmt.Errorf("cmd \"%s\" start failed: %w", cmd, err)
+	}
+
+	logger := func(s string, r io.Reader) {
+		for scanner := bufio.NewScanner(r); scanner.Scan(); {
+			log.Println(s, ">", scanner.Text())
+		}
+	}
+
+	go logger(args[0], stdout)
+	go logger(args[0], stderr)
+
+	if err := c.Wait(); err != nil {
+		return fmt.Errorf("cmd \"%s\" failed: %w", cmd, err)
+	}
+
+	log.Printf("cmd \"%s\" ok", cmd)
+
+	return nil
+}
+
 func configure(s *server.Server) error {
 	if err := readConfig(s); err != nil {
 		return err
@@ -176,9 +214,17 @@ func configure(s *server.Server) error {
 		}
 	}
 
+	if err := runCommand(s, "cmd.init"); err != nil {
+		return err
+	}
+
 	return nil
 }
 
+func deconfigure(s *server.Server) error {
+	return runCommand(s, "cmd.down")
+}
+
 func main() {
 	flag.Parse()
 	initLog()
@@ -208,5 +254,9 @@ func main() {
 
 	s.Run()
 
+	if err := deconfigure(s); err != nil {
+		log.Println(err)
+	}
+
 	log.Print("exit")
 }