Files

62 lines
1.8 KiB
Go

// Package testutil contains fixtures shared by transport integration tests.
package testutil
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"math/big"
"net"
"os"
"path/filepath"
"testing"
"time"
)
// CertificateFiles creates a temporary localhost certificate and a client
// configuration that verifies it. No insecure TLS bypass is needed in tests.
func CertificateFiles(t testing.TB) (certFile, keyFile string, client *tls.Config) {
t.Helper()
key, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
if err != nil {
t.Fatal(err)
}
serial, err := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 120))
if err != nil {
t.Fatal(err)
}
certificate := &x509.Certificate{
SerialNumber: serial,
NotBefore: time.Now().Add(-time.Hour), NotAfter: time.Now().Add(time.Hour),
DNSNames: []string{"localhost"}, IPAddresses: []net.IP{net.ParseIP("127.0.0.1")},
KeyUsage: x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
}
der, err := x509.CreateCertificate(rand.Reader, certificate, certificate, &key.PublicKey, key)
if err != nil {
t.Fatal(err)
}
keyDER, err := x509.MarshalPKCS8PrivateKey(key)
if err != nil {
t.Fatal(err)
}
directory := t.TempDir()
certFile, keyFile = filepath.Join(directory, "server.crt"), filepath.Join(directory, "server.key")
if err := os.WriteFile(certFile, pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: der}), 0600); err != nil {
t.Fatal(err)
}
if err := os.WriteFile(keyFile, pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: keyDER}), 0600); err != nil {
t.Fatal(err)
}
leaf, err := x509.ParseCertificate(der)
if err != nil {
t.Fatal(err)
}
roots := x509.NewCertPool()
roots.AddCert(leaf)
return certFile, keyFile, &tls.Config{RootCAs: roots, MinVersion: tls.VersionTLS12}
}