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// 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/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"fmt"
"log"
"math/big"
"net"
"os"
"path/filepath"
"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)
priv, err = ecdsa.GenerateKey(elliptic.P521(), rand.Reader)
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{"Ponzu Dev Server"},
},
NotBefore: notBefore,
NotAfter: notAfter,
KeyUsage: x509.KeyUsageKeyEncipherment | x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
BasicConstraintsValid: true,
}
hosts := []string{"localhost", "0.0.0.0"}
domain := db.ConfigCache("domain")
if domain != "" {
hosts = append(hosts, domain)
}
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:", err)
}
vendorTLSPath := filepath.Join(pwd, "cmd", "ponzu", "vendor", "github.com", "ponzu-cms", "ponzu", "system", "tls")
devcertsPath := filepath.Join(vendorTLSPath, "devcerts")
fmt.Println(devcertsPath)
// clear all old certs if found
err = os.RemoveAll(devcertsPath)
if err != nil {
log.Fatalln("Failed to remove old files from dev certificate directory:", err)
}
err = os.Mkdir(devcertsPath, os.ModePerm|os.ModePerm)
if err != nil {
log.Fatalln("Failed to create directory to locate or save dev certificates:", err)
}
certOut, err := os.Create(filepath.Join(devcertsPath, "cert.pem"))
if err != nil {
log.Fatalln("Failed to open devcerts/cert.pem for writing:", err)
}
pem.Encode(certOut, &pem.Block{Type: "CERTIFICATE", Bytes: derBytes})
certOut.Close()
keyOut, err := os.OpenFile(filepath.Join(devcertsPath, "key.pem"), os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
if err != nil {
log.Fatalln("Failed to open devcerts/key.pem for writing:", err)
return
}
pem.Encode(keyOut, pemBlockForKey(priv))
keyOut.Close()
}
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