Create httpsify.go

Author: alash3al

httpsify.go

@@ -0,0 +1,96 @@
+package main
+
+import (
+	"io"
+	"net"
+	"log"
+	"flag"
+	"strings"
+	"net/http"
+	"crypto/tls"
+	"path/filepath"
+	"github.com/dkumor/acmewrapper"
+)
+
+// --------------
+
+var (
+	port	*string		=	flag.String("port", "443", "the port that will serve the https requests")
+	cert	*string 	=	flag.String("cert", "./cert.pem", "the cert.pem save-path")
+	key		*string 	=	flag.String("key", "./key.pem", "the key.pem save-path")
+	domains	*string 	=	flag.String("domains", "", "a comma separated list of your site(s) domain(s)")
+	backend	*string 	=	flag.String("backend", "", "the backend http server that will serve the terminated requests")
+)
+
+// --------------
+
+func init() {
+	flag.Parse()
+	if ( *domains == "" ) {
+		log.Fatal("err> Please enter your site(s) domain(s)")
+	}
+	if ( *backend == "" ) {
+		log.Fatal("err> Please enter the backend http server")
+	}
+}
+
+// --------------
+
+func main() {
+	acme, err := acmewrapper.New(acmewrapper.Config{
+	    Domains: strings.Split(*domains, ","),
+	    Address: ":" + *port,
+	    TLSCertFile: *cert,
+	    TLSKeyFile:  *key,
+	    RegistrationFile: filepath.Dir(*cert) + "/lets-encrypt-user.reg",
+	    PrivateKeyFile:   filepath.Dir(*cert) + "/lets-encrypt-user.pem",
+	    TOSCallback: acmewrapper.TOSAgree,
+	})
+	if err!=nil {
+	    log.Fatal("err> "+ err.Error())
+	}
+	listener, err := tls.Listen("tcp", ":" + *port, acme.TLSConfig())
+	if err != nil {
+		log.Fatal("err> " + err.Error())
+	}
+	log.Fatal(http.Serve(listener, http.HandlerFunc(func(w http.ResponseWriter, r *http.Request){
+		defer r.Body.Close()
+		req, err := http.NewRequest(r.Method, *backend, r.Body)
+		if err != nil {
+			http.Error(w, http.StatusText(504), 504)
+			return
+		}
+		ip, _, _ := net.SplitHostPort(r.RemoteAddr)
+		for k, v := range r.Header {
+			for i := 0; i < len(v); i ++ {
+				if i == 0 {
+					req.Header.Set(k, v[i])
+				} else {
+					req.Header.Add(k, v[i])
+				}
+			}
+		}
+		req.Header.Set("X-Real-IP", ip)
+		req.Header.Set("X-Forwarded-For", ip)
+		req.Header.Set("X-Forwarded-Proto", "https")
+		req.Header.Set("X-Forwarded-Host", r.Host)
+		req.Header.Set("X-Forwarded-Port", *port)
+		res, err := http.DefaultClient.Do(req)
+		if err != nil {
+			http.Error(w, http.StatusText(504), 504)
+			return
+		}
+		defer res.Body.Close()
+		for k, v := range res.Header {
+			for i := 0; i < len(v); i ++ {
+				if i == 0 {
+					w.Header().Set(k, v[i])
+				} else {
+					w.Header().Add(k, v[i])
+				}
+			}
+		}
+		w.WriteHeader(res.StatusCode)
+		io.Copy(w, res.Body)
+	})))
+}