adding self-signed cert generator for local https/http2 testing

4 files changed, 183 insertions, 8 deletions

diff --git a/cmd/ponzu/main.go b/cmd/ponzu/main.go
index 9900d40..3764984 100644
--- a/cmd/ponzu/main.go
+++ b/cmd/ponzu/main.go
@@ -20,9 +20,10 @@ import (
 )
 
 var (
-	usage = usageHeader + usageNew + usageGenerate + usageBuild + usageRun
-	port  int
-	https bool
+	usage    = usageHeader + usageNew + usageGenerate + usageBuild + usageRun
+	port     int
+	https    bool
+	devhttps bool
 
 	// for ponzu internal / core development
 	dev   bool
@@ -30,15 +31,14 @@ var (
 	gocmd string
 )
 
-func init() {
+func main() {
 	flag.Usage = func() {
 		fmt.Println(usage)
 	}
-}
 
-func main() {
 	flag.IntVar(&port, "port", 8080, "port for ponzu to bind its listener")
 	flag.BoolVar(&https, "https", false, "enable automatic TLS/SSL certificate management")
+	flag.BoolVar(&devhttps, "devhttps", false, "[dev environment] enable automatic TLS/SSL certificate management")
 	flag.BoolVar(&dev, "dev", false, "modify environment for Ponzu core development")
 	flag.StringVar(&fork, "fork", "", "modify repo source for Ponzu core development")
 	flag.StringVar(&gocmd, "gocmd", "go", "custom go command if using beta or new release of Go")
@@ -116,6 +116,10 @@ func main() {
 			addTLS = "--https=false"
 		}
 
+		if devhttps {
+			addTLS = "--devhttps"
+		}
+
 		var services string
 		if len(args) > 1 {
 			services = args[1]
@@ -167,7 +171,11 @@ func main() {
 			}
 		}
 
-		if https {
+		// cannot run production HTTPS and development HTTPS together
+		if devhttps {
+			fmt.Println("Enabling self-signed HTTPS...")
+			tls.EnableDev()
+		} else if https {
 			fmt.Println("Enabling HTTPS...")
 			tls.Enable()
 		}
diff --git a/system/tls/devcerts.go b/system/tls/devcerts.go
new file mode 100644
index 0000000..7d07a4a
--- /dev/null
+++ b/system/tls/devcerts.go
@@ -0,0 +1,143 @@
+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Modified 2016 by Steve Manuel, Boss Sauce Creative, LLC
+// All modifications are relicensed under the same BSD license
+// found in the LICENSE file.
+
+// Generate a self-signed X.509 certificate for a TLS server. Outputs to
+// 'devcerts/cert.pem' and 'devcerts/key.pem' and will overwrite existing files.
+
+package tls
+
+import (
+	"crypto/ecdsa"
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/x509"
+	"crypto/x509/pkix"
+	"encoding/pem"
+	"fmt"
+	"log"
+	"math/big"
+	"net"
+	"os"
+	"path/filepath"
+	"strings"
+	"time"
+
+	"github.com/ponzu-cms/ponzu/system/db"
+)
+
+func publicKey(priv interface{}) interface{} {
+	switch k := priv.(type) {
+	case *rsa.PrivateKey:
+		return &k.PublicKey
+	case *ecdsa.PrivateKey:
+		return &k.PublicKey
+	default:
+		return nil
+	}
+}
+
+func pemBlockForKey(priv interface{}) *pem.Block {
+	switch k := priv.(type) {
+	case *rsa.PrivateKey:
+		return &pem.Block{Type: "RSA PRIVATE KEY", Bytes: x509.MarshalPKCS1PrivateKey(k)}
+	case *ecdsa.PrivateKey:
+		b, err := x509.MarshalECPrivateKey(k)
+		if err != nil {
+			fmt.Fprintf(os.Stderr, "Unable to marshal ECDSA private key: %v", err)
+			os.Exit(2)
+		}
+		return &pem.Block{Type: "EC PRIVATE KEY", Bytes: b}
+	default:
+		return nil
+	}
+}
+
+func setupDev() {
+	var priv interface{}
+	var err error
+
+	priv, err = rsa.GenerateKey(rand.Reader, 2048)
+
+	if err != nil {
+		log.Fatalf("failed to generate private key: %s", err)
+	}
+
+	notBefore := time.Now()
+	notAfter := notBefore.Add(time.Hour * 24 * 30) // valid for 30 days
+
+	serialNumberLimit := new(big.Int).Lsh(big.NewInt(1), 128)
+	serialNumber, err := rand.Int(rand.Reader, serialNumberLimit)
+	if err != nil {
+		log.Fatalf("failed to generate serial number: %s", err)
+	}
+
+	template := x509.Certificate{
+		SerialNumber: serialNumber,
+		Subject: pkix.Name{
+			Organization: []string{"Acme Co"},
+		},
+		NotBefore: notBefore,
+		NotAfter:  notAfter,
+
+		KeyUsage:              x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
+		ExtKeyUsage:           []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
+		BasicConstraintsValid: true,
+	}
+
+	host := db.ConfigCache("domain")
+	if host == "" {
+		host = "localhost, 0.0.0.0"
+	}
+	hosts := strings.Split(host, ",")
+	for _, h := range hosts {
+		if ip := net.ParseIP(h); ip != nil {
+			template.IPAddresses = append(template.IPAddresses, ip)
+		} else {
+			template.DNSNames = append(template.DNSNames, h)
+		}
+	}
+
+	// make all certs CA
+	template.IsCA = true
+	template.KeyUsage |= x509.KeyUsageCertSign
+
+	derBytes, err := x509.CreateCertificate(rand.Reader, &template, &template, publicKey(priv), priv)
+	if err != nil {
+		log.Fatalln("Failed to create certificate:", err)
+	}
+
+	// overwrite/create directory for devcerts
+	pwd, err := os.Getwd()
+	if err != nil {
+		log.Fatalln("Couldn't find working directory to locate or save dev certificates.")
+	}
+
+	devcertsPath := filepath.Join(pwd, "system", "tls", "devcerts")
+
+	err = os.Mkdir(devcertsPath, os.ModePerm|os.ModePerm)
+	if err != nil {
+		log.Fatalln("Failed to create directory to locate or save dev certificates.")
+	}
+
+	certOut, err := os.Create(filepath.Join(devcertsPath, "cert.pem"))
+	if err != nil {
+		log.Fatalf("failed to open devcerts/cert.pem for writing: %s", err)
+	}
+	pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
+	certOut.Close()
+	log.Print("written devcerts/cert.pem\n")
+
+	keyOut, err := os.OpenFile(filepath.Join(devcertsPath, "key.pem"), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		log.Print("failed to open devcerts/key.pem for writing:", err)
+		return
+	}
+	pem.Encode(keyOut, pemBlockForKey(priv))
+	keyOut.Close()
+	log.Print("written devcerts/key.pem\n")
+}
diff --git a/system/tls/enable.go b/system/tls/enable.go
index 04f032a..5e16b92 100644
--- a/system/tls/enable.go
+++ b/system/tls/enable.go
@@ -65,7 +65,8 @@ func setup() {
 
 }
 
-// Enable runs the setup for creating or locating certificates and starts the TLS server
+// Enable runs the setup for creating or locating production certificates and 
+// starts the TLS server
 func Enable() {
 	setup()
 
diff --git a/system/tls/enabledev.go b/system/tls/enabledev.go
new file mode 100644
index 0000000..18da161
--- /dev/null
+++ b/system/tls/enabledev.go
@@ -0,0 +1,23 @@
+package tls
+
+import (
+	"log"
+	"net/http"
+	"path/filepath"
+)
+
+// EnableDev generates self-signed SSL certificates to use HTTPS & HTTP/2 while
+// working in a development environment. The certs are saved in a different
+// directory than the production certs (from Let's Encrypt), so that the
+// acme/autocert package doesn't mistake them for it's own.
+// Additionally, a TLS server is started using the default http mux.
+func EnableDev() {
+	setupDev()
+
+	cert := filepath.Join("devcerts", "cert.pem")
+	key := filepath.Join("devcerts", "key.pem")
+	err := http.ListenAndServeTLS(":10443", cert, key, nil)
+	if err != nil {
+		log.Fatalln(err)
+	}
+}