80 lines
1.5 KiB
Go
80 lines
1.5 KiB
Go
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package main
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import (
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"crypto/tls"
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"log"
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"net"
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"flag"
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"fmt"
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"os"
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"os/exec"
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)
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var (
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cfile = flag.String("cert", "cert.pem", "Certificate file in PEM format")
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kfile = flag.String("key", "key.pem", "Key file in PEM format")
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port = flag.Int("port", 1234, "Port to bind to")
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args []string
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nargs int
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)
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func main() {
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flag.Parse()
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args = flag.Args()
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nargs = flag.NArg()
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if nargs < 1 {
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fmt.Println("Usage: tlsserver [options] cmd [flags for cmd]")
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fmt.Println("options:")
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flag.PrintDefaults()
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os.Exit(1)
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}
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// setup certs etc. for TLS-socket
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tconf := new(tls.Config)
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cert, err := tls.LoadX509KeyPair(*cfile, *kfile)
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if err != nil {
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fmt.Println("error with certs:", err)
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os.Exit(2)
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}
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tconf.Certificates = append(tconf.Certificates, cert)
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tconf.BuildNameToCertificate()
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// start listening
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sport := fmt.Sprintf(":%d", *port)
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sock, err := tls.Listen("tcp", sport , tconf)
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if err != nil {
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fmt.Println("error with tcp-socket:", err)
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os.Exit(3)
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}
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defer sock.Close()
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// accept-loop
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for {
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conn, err := sock.Accept()
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if err != nil {
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log.Println("error during Accept()", err)
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continue
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}
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log.Println("Got connection:", conn.RemoteAddr())
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go handleConnection(conn)
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}
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}
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func handleConnection(conn net.Conn) {
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defer conn.Close()
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// setup cmd
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cmd := exec.Command(args[0])
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cmd.Args = args
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cmd.Stdin = conn
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cmd.Stdout = conn
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cmd.Stderr = os.Stderr
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err := cmd.Run()
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if err != nil {
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log.Println(err)
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}
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log.Println("Done with connection", conn.RemoteAddr())
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}
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