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|
package tlsutil
import (
"crypto/tls"
"crypto/x509"
"encoding/pem"
"fmt"
"io"
"math/big"
"net/http"
"net/http/httptest"
"os"
"path/filepath"
"reflect"
"testing"
"time"
"go.step.sm/crypto/x509util"
)
func testServerRenewFunc(hello *tls.ClientHelloInfo) (*tls.Certificate, *tls.Config, error) {
var err error
leafCert.NotBefore = time.Now()
leafCert.DNSNames, leafCert.IPAddresses, leafCert.EmailAddresses, leafCert.URIs = x509util.SplitSANs([]string{hello.ServerName})
leafCert.NotAfter = leafCert.NotBefore.Add(time.Hour)
leafCert.SerialNumber = leafCert.SerialNumber.Add(leafCert.SerialNumber, big.NewInt(1))
leafCert, err = x509util.CreateCertificate(leafCert, issuerCert, leafKey.Public(), issuerKey)
if err != nil {
return nil, nil, err
}
return &tls.Certificate{
Certificate: [][]byte{leafCert.Raw},
PrivateKey: leafKey,
Leaf: leafCert,
}, tlsConfig, nil
}
func TestNewServerCredentials(t *testing.T) {
type args struct {
fn ServerRenewFunc
}
tests := []struct {
name string
args args
want *ServerCredentials
wantErr bool
}{
{"ok", args{testServerRenewFunc}, &ServerCredentials{RenewFunc: testServerRenewFunc, cache: newCredentialsCache()}, false},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := NewServerCredentials(tt.args.fn)
if (err != nil) != tt.wantErr {
t.Errorf("NewServerCredentials() error = %v, wantErr %v", err, tt.wantErr)
return
}
// Cannot deep equal methods
if got != nil {
got.RenewFunc = nil
}
if tt.want != nil {
tt.want.RenewFunc = nil
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("NewServerCredentials() = %v, want %v", got, tt.want)
}
})
}
}
func TestNewServerCredentialsFromFile(t *testing.T) {
dir := t.TempDir()
certFile := filepath.Join(dir, "testcert.crt")
keyFile := filepath.Join(dir, "testcert.key")
if err := os.WriteFile(certFile, pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: leafCert.Raw,
}), 0600); err != nil {
t.Fatal(err)
}
keyBytes, err := x509.MarshalPKCS8PrivateKey(leafKey)
if err != nil {
t.Fatal(err)
}
if err := os.WriteFile(keyFile, pem.EncodeToMemory(&pem.Block{
Type: "PRIVATE KEY",
Bytes: keyBytes,
}), 0600); err != nil {
t.Fatal(err)
}
type args struct {
certFile string
keyFile string
}
tests := []struct {
name string
args args
wantCert *tls.Certificate
wantErr bool
}{
{"ok", args{certFile, keyFile}, &tls.Certificate{
Certificate: [][]byte{leafCert.Raw},
PrivateKey: leafKey,
Leaf: leafCert,
}, false},
{"fail", args{certFile, filepath.Join(dir, "missing.key")}, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got, err := NewServerCredentialsFromFile(tt.args.certFile, tt.args.keyFile)
if (err != nil) != tt.wantErr {
t.Errorf("NewServerCredentialsFromFile() error = %v, wantErr %v", err, tt.wantErr)
return
}
if tt.wantCert != nil {
cert, err := got.GetCertificate(&tls.ClientHelloInfo{ServerName: "localhost"})
if err != nil {
t.Errorf("GetCertificate() error = %v", err)
return
}
if !reflect.DeepEqual(cert, tt.wantCert) {
t.Errorf("GetCertificate() = \n%v, want \n%v", cert, tt.wantCert)
}
}
})
}
}
func TestServerCredentials_GetCertificate(t *testing.T) {
// Prepare server
sc, err := NewServerCredentials(testServerRenewFunc)
if err != nil {
t.Fatal(err)
}
srv := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "ok")
}))
srv.TLS = &tls.Config{
MinVersion: tls.VersionTLS12,
GetCertificate: sc.GetCertificate,
}
srv.StartTLS()
// We need to set Certificates to nil, because if the hello message does not
// have a SNI, this certificate will be used.
srv.TLS.Certificates = nil
defer srv.Close()
// Create url with localhost
dnsURL := getLocalHostURL(t, srv.URL)
// Prepare valid client
pool := x509.NewCertPool()
pool.AddCert(issuerCert)
tr := http.DefaultTransport.(*http.Transport).Clone()
tr.TLSClientConfig = &tls.Config{
MinVersion: tls.VersionTLS12,
RootCAs: pool,
}
tests := []struct {
name string
client *http.Client
url string
want []byte
wantErr bool
}{
{"ok", &http.Client{Transport: tr}, dnsURL, []byte("ok"), false},
{"fail empty", &http.Client{}, dnsURL, nil, true},
{"fail httptest", srv.Client(), dnsURL, nil, true},
{"fail ip", &http.Client{Transport: tr}, srv.URL, nil, true},
{"fail httptest ip", srv.Client(), srv.URL, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resp, err := tt.client.Get(tt.url)
if (err != nil) != tt.wantErr {
t.Errorf("http.Client.Get() error = %v, wantErr %v", err, tt.wantErr)
return
}
if resp != nil && resp.Body != nil {
got, err := io.ReadAll(resp.Body)
if err != nil {
t.Errorf("io.ReadAll() error = %v", err)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("http.Client.Get() = %v, want %v", got, tt.want)
}
}
})
}
}
func TestServerCredentials_GetConfigForClient(t *testing.T) {
// Prepare server
sc, err := NewServerCredentials(testServerRenewFunc)
if err != nil {
t.Fatal(err)
}
srv := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "ok")
}))
srv.TLS = &tls.Config{
MinVersion: tls.VersionTLS12,
GetConfigForClient: sc.GetConfigForClient,
}
srv.StartTLS()
// We need to set Certificates to nil, because if the hello message does not
// have a SNI, this certificate will be used.
srv.TLS.Certificates = nil
defer srv.Close()
// Create url with localhost
dnsURL := getLocalHostURL(t, srv.URL)
// Prepare valid client
pool := x509.NewCertPool()
pool.AddCert(issuerCert)
tr := http.DefaultTransport.(*http.Transport).Clone()
tr.TLSClientConfig = &tls.Config{
MinVersion: tls.VersionTLS12,
RootCAs: pool,
}
tests := []struct {
name string
client *http.Client
url string
want []byte
wantErr bool
}{
{"ok", &http.Client{Transport: tr}, dnsURL, []byte("ok"), false},
{"fail empty", &http.Client{}, dnsURL, nil, true},
{"fail httptest", srv.Client(), dnsURL, nil, true},
{"fail ip", &http.Client{Transport: tr}, srv.URL, nil, true},
{"fail httptest ip", srv.Client(), srv.URL, nil, true},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
resp, err := tt.client.Get(tt.url)
if (err != nil) != tt.wantErr {
t.Errorf("http.Client.Get() error = %v, wantErr %v", err, tt.wantErr)
return
}
if resp != nil && resp.Body != nil {
got, err := io.ReadAll(resp.Body)
if err != nil {
t.Errorf("io.ReadAll() error = %v", err)
return
}
if !reflect.DeepEqual(got, tt.want) {
t.Errorf("http.Client.Get() = %v, want %v", got, tt.want)
}
}
})
}
}
func TestServerCredentials_RenewFunc_error(t *testing.T) {
// Prepare server
sc, err := NewServerCredentials(func(hello *tls.ClientHelloInfo) (*tls.Certificate, *tls.Config, error) {
return nil, nil, fmt.Errorf("test error")
})
if err != nil {
t.Fatal(err)
}
tests := []struct {
name string
tlsConfig *tls.Config
}{
{"fail GetCertificate", &tls.Config{GetCertificate: sc.GetCertificate, MinVersion: tls.VersionTLS12}},
{"fail GetConfigForClient", &tls.Config{GetConfigForClient: sc.GetConfigForClient, MinVersion: tls.VersionTLS12}},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
srv := httptest.NewUnstartedServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
fmt.Fprintf(w, "ok")
}))
srv.TLS = tt.tlsConfig
srv.StartTLS()
defer srv.Close()
// Prepare valid client
pool := x509.NewCertPool()
pool.AddCert(issuerCert)
tr := http.DefaultTransport.(*http.Transport).Clone()
tr.TLSClientConfig = &tls.Config{
MinVersion: tls.VersionTLS12,
RootCAs: pool,
}
c := &http.Client{Transport: tr}
if _, err := c.Get(getLocalHostURL(t, srv.URL)); err == nil {
t.Errorf("http.Client.Get() error = %v, wantErr true", err)
}
})
}
}
func TestServerCredentials_TLSConfig(t *testing.T) {
sc, err := NewServerCredentials(testServerRenewFunc)
if err != nil {
t.Fatal(err)
}
tests := []struct {
name string
serverCredentials *ServerCredentials
want *tls.Config
}{
{"ok", sc, &tls.Config{
MinVersion: tls.VersionTLS12,
GetCertificate: sc.GetCertificate,
GetConfigForClient: sc.GetConfigForClient,
}},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
got := tt.serverCredentials.TLSConfig()
if got.GetCertificate == nil || got.GetConfigForClient == nil {
t.Errorf("ServerCredentials.TLSConfig() = \n%#v, want \n%#v", got, tt.want)
}
})
}
}
|
