mirror of
https://github.com/wneessen/go-mail.git
synced 2024-11-15 02:12:55 +01:00
Refactor SMTP test cases for improved clarity and coverage
Consolidate and organize SMTP test cases by removing obsolete tests and adding focused, detailed tests for CRAM-MD5 and new client behaviors. This ensures clearer test structure and better coverage of edge cases.
This commit is contained in:
parent
92ab51b13d
commit
cefaa0d4ee
GPG key ID:
385AC9889632126E
1 changed files with 229 additions and 540 deletions
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@ -1391,252 +1391,204 @@ func TestScramAuth_handleServerFirstResponse(t *testing.T) {
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t.Errorf("expected error to be %q, got %q", expectedErr, err)
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}
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})
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}
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/*
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func TestCRAMMD5Auth(t *testing.T) {
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t.Run("CRAM-MD5 on test server succeeds", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-AUTH CRAM-MD5\r\n250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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auth := CRAMMD5Auth("username", "password")
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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if err = client.Auth(auth); err != nil {
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t.Errorf("failed to auth to test server: %s", err)
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}
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})
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t.Run("CRAM-MD5 on test server fails", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-AUTH CRAM-MD5\r\n250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnAuth: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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func TestAuthSCRAMSHA1_OK(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2585"
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go func() {
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startSMTPServer(false, hostname, port, sha1.New)
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}()
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time.Sleep(time.Millisecond * 500)
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port))
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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if err = client.Auth(ScramSHA1Auth("username", "password")); err != nil {
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t.Errorf("failed to authenticate: %v", err)
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}
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auth := CRAMMD5Auth("username", "password")
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Fatalf("failed to dial to test server: %s", err)
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}
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if err = client.Auth(auth); err == nil {
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t.Error("auth should fail on test server")
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}
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})
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}
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func TestAuthSCRAMSHA256_OK(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2586"
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func TestNewClient(t *testing.T) {
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t.Run("new client via Dial succeeds", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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go func() {
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startSMTPServer(false, hostname, port, sha256.New)
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}()
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time.Sleep(time.Millisecond * 500)
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Errorf("failed to create client: %s", err)
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}
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if err := client.Close(); err != nil {
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t.Errorf("failed to close client: %s", err)
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}
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})
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t.Run("new client via Dial fails on server not started", func(t *testing.T) {
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_, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, 64000))
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if err == nil {
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t.Error("dial on non-existant server should fail")
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}
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})
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t.Run("new client fails on server not available", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnDial: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port))
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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if err = client.Auth(ScramSHA256Auth("username", "password")); err != nil {
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t.Errorf("failed to authenticate: %v", err)
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}
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_, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err == nil {
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t.Error("connection to non-available server should fail")
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}
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})
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t.Run("new client fails on faker that fails on close", func(t *testing.T) {
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server := "442 service not available\r\n"
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var wrote strings.Builder
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var fake faker
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fake.failOnClose = true
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fake.ReadWriter = struct {
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io.Reader
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io.Writer
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}{
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strings.NewReader(server),
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&wrote,
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}
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_, err := NewClient(fake, "faker.host")
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if err == nil {
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t.Error("connection to non-available server should fail on close")
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}
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})
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}
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func TestAuthSCRAMSHA1PLUS_OK(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2590"
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func TestClient_hello(t *testing.T) {
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t.Run("client fails on EHLO but not on HELO", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FailOnEhlo: true,
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FailOnHelo: true,
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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go func() {
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startSMTPServer(true, hostname, port, sha1.New)
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}()
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time.Sleep(time.Millisecond * 500)
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cert, err := tls.X509KeyPair(localhostCert, localhostKey)
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if err != nil {
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fmt.Printf("error creating TLS cert: %s", err)
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return
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}
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tlsConfig := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
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conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port), &tlsConfig)
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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tlsConnState := conn.ConnectionState()
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if err = client.Auth(ScramSHA1PlusAuth("username", "password", &tlsConnState)); err != nil {
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t.Errorf("failed to authenticate: %v", err)
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}
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Errorf("failed to dial to test server: %s", err)
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}
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if err = client.hello(); err == nil {
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t.Error("helo should fail on test server")
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}
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})
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}
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func TestAuthSCRAMSHA256PLUS_OK(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2591"
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func TestClient_Hello(t *testing.T) {
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t.Run("normal client HELO/EHLO", func(t *testing.T) {
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ctx, cancel := context.WithCancel(context.Background())
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defer cancel()
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PortAdder.Add(1)
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serverPort := int(TestServerPortBase + PortAdder.Load())
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featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
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go func() {
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if err := simpleSMTPServer(ctx, t, &serverProps{
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FeatureSet: featureSet,
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ListenPort: serverPort,
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},
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); err != nil {
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t.Errorf("failed to start test server: %s", err)
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return
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}
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}()
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time.Sleep(time.Millisecond * 30)
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go func() {
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startSMTPServer(true, hostname, port, sha256.New)
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}()
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time.Sleep(time.Millisecond * 500)
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cert, err := tls.X509KeyPair(localhostCert, localhostKey)
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if err != nil {
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fmt.Printf("error creating TLS cert: %s", err)
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return
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}
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tlsConfig := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
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conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port), &tlsConfig)
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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tlsConnState := conn.ConnectionState()
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if err = client.Auth(ScramSHA256PlusAuth("username", "password", &tlsConnState)); err != nil {
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t.Errorf("failed to authenticate: %v", err)
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}
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}
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func TestAuthSCRAMSHA1_fail(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2587"
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go func() {
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startSMTPServer(false, hostname, port, sha1.New)
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}()
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time.Sleep(time.Millisecond * 500)
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port))
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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if err = client.Auth(ScramSHA1Auth("username", "invalid")); err == nil {
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t.Errorf("expected auth error, got nil")
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}
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}
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func TestAuthSCRAMSHA256_fail(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2588"
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go func() {
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startSMTPServer(false, hostname, port, sha256.New)
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}()
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time.Sleep(time.Millisecond * 500)
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conn, err := net.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port))
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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if err = client.Auth(ScramSHA256Auth("username", "invalid")); err == nil {
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t.Errorf("expected auth error, got nil")
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}
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}
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func TestAuthSCRAMSHA1PLUS_fail(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2592"
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go func() {
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startSMTPServer(true, hostname, port, sha1.New)
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}()
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time.Sleep(time.Millisecond * 500)
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cert, err := tls.X509KeyPair(localhostCert, localhostKey)
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if err != nil {
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fmt.Printf("error creating TLS cert: %s", err)
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return
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}
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tlsConfig := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
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conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port), &tlsConfig)
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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tlsConnState := conn.ConnectionState()
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if err = client.Auth(ScramSHA1PlusAuth("username", "invalid", &tlsConnState)); err == nil {
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t.Errorf("expected auth error, got nil")
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}
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}
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func TestAuthSCRAMSHA256PLUS_fail(t *testing.T) {
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hostname := "127.0.0.1"
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port := "2593"
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go func() {
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startSMTPServer(true, hostname, port, sha1.New)
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}()
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time.Sleep(time.Millisecond * 500)
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cert, err := tls.X509KeyPair(localhostCert, localhostKey)
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if err != nil {
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fmt.Printf("error creating TLS cert: %s", err)
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return
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}
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tlsConfig := tls.Config{Certificates: []tls.Certificate{cert}, InsecureSkipVerify: true}
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conn, err := tls.Dial("tcp", fmt.Sprintf("%s:%s", hostname, port), &tlsConfig)
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if err != nil {
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t.Errorf("failed to dial server: %v", err)
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}
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client, err := NewClient(conn, hostname)
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if err != nil {
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t.Errorf("failed to create client: %v", err)
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}
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if err = client.Hello(hostname); err != nil {
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t.Errorf("failed to send HELO: %v", err)
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}
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tlsConnState := conn.ConnectionState()
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if err = client.Auth(ScramSHA256PlusAuth("username", "invalid", &tlsConnState)); err == nil {
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t.Errorf("expected auth error, got nil")
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}
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client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
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if err != nil {
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t.Errorf("failed to dial to test server: %s", err)
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}
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if err = client.Hello(TestServerAddr); err != nil {
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t.Errorf("failed to send HELO/EHLO to test server: %s", err)
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}
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})
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}
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// Issue 17794: don't send a trailing space on AUTH command when there's no password.
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func TestClientAuthTrimSpace(t *testing.T) {
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func TestClient_Auth_trimSpace(t *testing.T) {
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server := "220 hello world\r\n" +
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"200 some more"
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var wrote strings.Builder
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|
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@ -1655,7 +1607,7 @@ func TestClientAuthTrimSpace(t *testing.T) {
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c.tls = true
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c.didHello = true
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_ = c.Auth(toServerEmptyAuth{})
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if err := c.Close(); err != nil {
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if err = c.Close(); err != nil {
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t.Errorf("close failed: %s", err)
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}
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if got, want := wrote.String(), "AUTH FOOAUTH\r\n*\r\nQUIT\r\n"; got != want {
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|
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@ -1663,19 +1615,15 @@ func TestClientAuthTrimSpace(t *testing.T) {
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}
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}
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// toServerEmptyAuth is an implementation of Auth that only implements
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// the Start method, and returns "FOOAUTH", nil, nil. Notably, it returns
|
||||
// zero bytes for "toServer" so we can test that we don't send spaces at
|
||||
// the end of the line. See TestClientAuthTrimSpace.
|
||||
type toServerEmptyAuth struct{}
|
||||
/*
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
func (toServerEmptyAuth) Start(_ *ServerInfo) (proto string, toServer []byte, err error) {
|
||||
return "FOOAUTH", nil, nil
|
||||
}
|
||||
|
||||
func (toServerEmptyAuth) Next(_ []byte, _ bool) (toServer []byte, err error) {
|
||||
panic("unexpected call")
|
||||
}
|
||||
|
||||
func TestBasic(t *testing.T) {
|
||||
server := strings.Join(strings.Split(basicServer, "\n"), "\r\n")
|
||||
|
|
@ -3158,46 +3106,6 @@ func sendMail(hostPort string) error {
|
|||
return SendMail(hostPort, nil, from, to, []byte("Subject: test\n\nhowdy!"))
|
||||
}
|
||||
|
||||
// localhostCert is a PEM-encoded TLS cert generated from src/crypto/tls:
|
||||
//
|
||||
// go run generate_cert.go --rsa-bits 1024 --host 127.0.0.1,::1,example.com \
|
||||
// --ca --start-date "Jan 1 00:00:00 1970" --duration=1000000h
|
||||
var localhostCert = []byte(`
|
||||
-----BEGIN CERTIFICATE-----
|
||||
MIICFDCCAX2gAwIBAgIRAK0xjnaPuNDSreeXb+z+0u4wDQYJKoZIhvcNAQELBQAw
|
||||
EjEQMA4GA1UEChMHQWNtZSBDbzAgFw03MDAxMDEwMDAwMDBaGA8yMDg0MDEyOTE2
|
||||
MDAwMFowEjEQMA4GA1UEChMHQWNtZSBDbzCBnzANBgkqhkiG9w0BAQEFAAOBjQAw
|
||||
gYkCgYEA0nFbQQuOWsjbGtejcpWz153OlziZM4bVjJ9jYruNw5n2Ry6uYQAffhqa
|
||||
JOInCmmcVe2siJglsyH9aRh6vKiobBbIUXXUU1ABd56ebAzlt0LobLlx7pZEMy30
|
||||
LqIi9E6zmL3YvdGzpYlkFRnRrqwEtWYbGBf3znO250S56CCWH2UCAwEAAaNoMGYw
|
||||
DgYDVR0PAQH/BAQDAgKkMBMGA1UdJQQMMAoGCCsGAQUFBwMBMA8GA1UdEwEB/wQF
|
||||
MAMBAf8wLgYDVR0RBCcwJYILZXhhbXBsZS5jb22HBH8AAAGHEAAAAAAAAAAAAAAA
|
||||
AAAAAAEwDQYJKoZIhvcNAQELBQADgYEAbZtDS2dVuBYvb+MnolWnCNqvw1w5Gtgi
|
||||
NmvQQPOMgM3m+oQSCPRTNGSg25e1Qbo7bgQDv8ZTnq8FgOJ/rbkyERw2JckkHpD4
|
||||
n4qcK27WkEDBtQFlPihIM8hLIuzWoi/9wygiElTy/tVL3y7fGCvY2/k1KBthtZGF
|
||||
tN8URjVmyEo=
|
||||
-----END CERTIFICATE-----`)
|
||||
|
||||
// localhostKey is the private key for localhostCert.
|
||||
var localhostKey = []byte(testingKey(`
|
||||
-----BEGIN RSA TESTING KEY-----
|
||||
MIICXgIBAAKBgQDScVtBC45ayNsa16NylbPXnc6XOJkzhtWMn2Niu43DmfZHLq5h
|
||||
AB9+Gpok4icKaZxV7ayImCWzIf1pGHq8qKhsFshRddRTUAF3np5sDOW3QuhsuXHu
|
||||
lkQzLfQuoiL0TrOYvdi90bOliWQVGdGurAS1ZhsYF/fOc7bnRLnoIJYfZQIDAQAB
|
||||
AoGBAMst7OgpKyFV6c3JwyI/jWqxDySL3caU+RuTTBaodKAUx2ZEmNJIlx9eudLA
|
||||
kucHvoxsM/eRxlxkhdFxdBcwU6J+zqooTnhu/FE3jhrT1lPrbhfGhyKnUrB0KKMM
|
||||
VY3IQZyiehpxaeXAwoAou6TbWoTpl9t8ImAqAMY8hlULCUqlAkEA+9+Ry5FSYK/m
|
||||
542LujIcCaIGoG1/Te6Sxr3hsPagKC2rH20rDLqXwEedSFOpSS0vpzlPAzy/6Rbb
|
||||
PHTJUhNdwwJBANXkA+TkMdbJI5do9/mn//U0LfrCR9NkcoYohxfKz8JuhgRQxzF2
|
||||
6jpo3q7CdTuuRixLWVfeJzcrAyNrVcBq87cCQFkTCtOMNC7fZnCTPUv+9q1tcJyB
|
||||
vNjJu3yvoEZeIeuzouX9TJE21/33FaeDdsXbRhQEj23cqR38qFHsF1qAYNMCQQDP
|
||||
QXLEiJoClkR2orAmqjPLVhR3t2oB3INcnEjLNSq8LHyQEfXyaFfu4U9l5+fRPL2i
|
||||
jiC0k/9L5dHUsF0XZothAkEA23ddgRs+Id/HxtojqqUT27B8MT/IGNrYsp4DvS/c
|
||||
qgkeluku4GjxRlDMBuXk94xOBEinUs+p/hwP1Alll80Tpg==
|
||||
-----END RSA TESTING KEY-----`))
|
||||
|
||||
func testingKey(s string) string { return strings.ReplaceAll(s, "TESTING KEY", "PRIVATE KEY") }
|
||||
|
||||
var flaky = flag.Bool("flaky", false, "run known-flaky tests too")
|
||||
|
||||
func SkipFlaky(t testing.TB, issue int) {
|
||||
|
|
@ -3207,271 +3115,22 @@ func SkipFlaky(t testing.TB, issue int) {
|
|||
}
|
||||
}
|
||||
|
||||
// testSCRAMSMTPServer represents a test server for SCRAM-based SMTP authentication.
|
||||
// It does not do any acutal computation of the challenges but verifies that the expected
|
||||
// fields are present. We have actual real authentication tests for all SCRAM modes in the
|
||||
// go-mail client_test.go
|
||||
type testSCRAMSMTPServer struct {
|
||||
authMechanism string
|
||||
nonce string
|
||||
hostname string
|
||||
port string
|
||||
tlsServer bool
|
||||
h func() hash.Hash
|
||||
}
|
||||
|
||||
func (s *testSCRAMSMTPServer) handleConnection(conn net.Conn) {
|
||||
defer func() {
|
||||
_ = conn.Close()
|
||||
}()
|
||||
|
||||
reader := bufio.NewReader(conn)
|
||||
writer := bufio.NewWriter(conn)
|
||||
writeLine := func(data string) error {
|
||||
_, err := writer.WriteString(data + "\r\n")
|
||||
if err != nil {
|
||||
return fmt.Errorf("unable to write line: %w", err)
|
||||
}
|
||||
return writer.Flush()
|
||||
}
|
||||
writeOK := func() {
|
||||
_ = writeLine("250 2.0.0 OK")
|
||||
}
|
||||
|
||||
if err := writeLine("220 go-mail test server ready ESMTP"); err != nil {
|
||||
return
|
||||
}
|
||||
|
||||
data, err := reader.ReadString('\n')
|
||||
if err != nil {
|
||||
return
|
||||
}
|
||||
data = strings.TrimSpace(data)
|
||||
if strings.HasPrefix(data, "EHLO") {
|
||||
_ = writeLine(fmt.Sprintf("250-%s", s.hostname))
|
||||
_ = writeLine("250-AUTH SCRAM-SHA-1 SCRAM-SHA-256")
|
||||
writeOK()
|
||||
} else {
|
||||
_ = writeLine("500 Invalid command")
|
||||
return
|
||||
}
|
||||
|
||||
for {
|
||||
data, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
fmt.Printf("failed to read data: %v", err)
|
||||
}
|
||||
data = strings.TrimSpace(data)
|
||||
if strings.HasPrefix(data, "AUTH") {
|
||||
parts := strings.Split(data, " ")
|
||||
if len(parts) < 2 {
|
||||
_ = writeLine("500 Syntax error")
|
||||
return
|
||||
}
|
||||
|
||||
authMechanism := parts[1]
|
||||
if authMechanism != "SCRAM-SHA-1" && authMechanism != "SCRAM-SHA-256" &&
|
||||
authMechanism != "SCRAM-SHA-1-PLUS" && authMechanism != "SCRAM-SHA-256-PLUS" {
|
||||
_ = writeLine("504 Unrecognized authentication mechanism")
|
||||
return
|
||||
}
|
||||
s.authMechanism = authMechanism
|
||||
_ = writeLine("334 ")
|
||||
s.handleSCRAMAuth(conn)
|
||||
return
|
||||
} else {
|
||||
_ = writeLine("500 Invalid command")
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
func (s *testSCRAMSMTPServer) handleSCRAMAuth(conn net.Conn) {
|
||||
reader := bufio.NewReader(conn)
|
||||
writer := bufio.NewWriter(conn)
|
||||
writeLine := func(data string) error {
|
||||
_, err := writer.WriteString(data + "\r\n")
|
||||
if err != nil {
|
||||
return fmt.Errorf("unable to write line: %w", err)
|
||||
}
|
||||
return writer.Flush()
|
||||
}
|
||||
var authMsg string
|
||||
|
||||
data, err := reader.ReadString('\n')
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
data = strings.TrimSpace(data)
|
||||
decodedMessage, err := base64.StdEncoding.DecodeString(data)
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
splits := strings.Split(string(decodedMessage), ",")
|
||||
if len(splits) != 4 {
|
||||
_ = writeLine("535 Authentication failed - expected 4 parts")
|
||||
return
|
||||
}
|
||||
if !s.tlsServer && splits[0] != "n" {
|
||||
_ = writeLine("535 Authentication failed - expected n to be in the first part")
|
||||
return
|
||||
}
|
||||
if s.tlsServer && !strings.HasPrefix(splits[0], "p=") {
|
||||
_ = writeLine("535 Authentication failed - expected p= to be in the first part")
|
||||
return
|
||||
}
|
||||
if splits[2] != "n=username" {
|
||||
_ = writeLine("535 Authentication failed - expected n=username to be in the third part")
|
||||
return
|
||||
}
|
||||
if !strings.HasPrefix(splits[3], "r=") {
|
||||
_ = writeLine("535 Authentication failed - expected r= to be in the fourth part")
|
||||
return
|
||||
}
|
||||
authMsg = splits[2] + "," + splits[3]
|
||||
|
||||
clientNonce := s.extractNonce(string(decodedMessage))
|
||||
if clientNonce == "" {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
|
||||
s.nonce = clientNonce + "server_nonce"
|
||||
serverFirstMessage := fmt.Sprintf("r=%s,s=%s,i=4096", s.nonce,
|
||||
base64.StdEncoding.EncodeToString([]byte("salt")))
|
||||
_ = writeLine(fmt.Sprintf("334 %s", base64.StdEncoding.EncodeToString([]byte(serverFirstMessage))))
|
||||
authMsg = authMsg + "," + serverFirstMessage
|
||||
|
||||
data, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
data = strings.TrimSpace(data)
|
||||
decodedFinalMessage, err := base64.StdEncoding.DecodeString(data)
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
splits = strings.Split(string(decodedFinalMessage), ",")
|
||||
|
||||
if !s.tlsServer && splits[0] != "c=biws" {
|
||||
_ = writeLine("535 Authentication failed - expected c=biws to be in the first part")
|
||||
return
|
||||
}
|
||||
if s.tlsServer {
|
||||
if !strings.HasPrefix(splits[0], "c=") {
|
||||
_ = writeLine("535 Authentication failed - expected c= to be in the first part")
|
||||
return
|
||||
}
|
||||
channelBind, err := base64.StdEncoding.DecodeString(splits[0][2:])
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed - base64 channel bind is not valid - " + err.Error())
|
||||
return
|
||||
}
|
||||
if !strings.HasPrefix(string(channelBind), "p=") {
|
||||
_ = writeLine("535 Authentication failed - expected channel binding to start with p=-")
|
||||
return
|
||||
}
|
||||
cbType := string(channelBind[2:])
|
||||
if !strings.HasPrefix(cbType, "tls-unique") && !strings.HasPrefix(cbType, "tls-exporter") {
|
||||
_ = writeLine("535 Authentication failed - expected channel binding type tls-unique or tls-exporter")
|
||||
return
|
||||
}
|
||||
}
|
||||
|
||||
if !strings.HasPrefix(splits[1], "r=") {
|
||||
_ = writeLine("535 Authentication failed - expected r to be in the second part")
|
||||
return
|
||||
}
|
||||
if !strings.Contains(splits[1], "server_nonce") {
|
||||
_ = writeLine("535 Authentication failed - expected server_nonce to be in the second part")
|
||||
return
|
||||
}
|
||||
if !strings.HasPrefix(splits[2], "p=") {
|
||||
_ = writeLine("535 Authentication failed - expected p to be in the third part")
|
||||
return
|
||||
}
|
||||
|
||||
authMsg = authMsg + "," + splits[0] + "," + splits[1]
|
||||
saltedPwd := pbkdf2.Key([]byte("password"), []byte("salt"), 4096, s.h().Size(), s.h)
|
||||
mac := hmac.New(s.h, saltedPwd)
|
||||
mac.Write([]byte("Server Key"))
|
||||
skey := mac.Sum(nil)
|
||||
mac.Reset()
|
||||
|
||||
mac = hmac.New(s.h, skey)
|
||||
mac.Write([]byte(authMsg))
|
||||
ssig := mac.Sum(nil)
|
||||
mac.Reset()
|
||||
|
||||
serverFinalMessage := fmt.Sprintf("v=%s", base64.StdEncoding.EncodeToString(ssig))
|
||||
_ = writeLine(fmt.Sprintf("334 %s", base64.StdEncoding.EncodeToString([]byte(serverFinalMessage))))
|
||||
|
||||
_, err = reader.ReadString('\n')
|
||||
if err != nil {
|
||||
_ = writeLine("535 Authentication failed")
|
||||
return
|
||||
}
|
||||
|
||||
_ = writeLine("235 Authentication successful")
|
||||
}
|
||||
|
||||
func (s *testSCRAMSMTPServer) extractNonce(message string) string {
|
||||
parts := strings.Split(message, ",")
|
||||
for _, part := range parts {
|
||||
if strings.HasPrefix(part, "r=") {
|
||||
return part[2:]
|
||||
}
|
||||
}
|
||||
return ""
|
||||
}
|
||||
|
||||
func startSMTPServer(tlsServer bool, hostname, port string, h func() hash.Hash) {
|
||||
server := &testSCRAMSMTPServer{
|
||||
hostname: hostname,
|
||||
port: port,
|
||||
tlsServer: tlsServer,
|
||||
h: h,
|
||||
}
|
||||
listener, err := net.Listen("tcp", fmt.Sprintf("%s:%s", hostname, port))
|
||||
if err != nil {
|
||||
fmt.Printf("Failed to start SMTP server: %v", err)
|
||||
}
|
||||
defer func() {
|
||||
_ = listener.Close()
|
||||
}()
|
||||
|
||||
cert, err := tls.X509KeyPair(localhostCert, localhostKey)
|
||||
if err != nil {
|
||||
fmt.Printf("error creating TLS cert: %s", err)
|
||||
return
|
||||
}
|
||||
tlsConfig := tls.Config{Certificates: []tls.Certificate{cert}}
|
||||
|
||||
for {
|
||||
conn, err := listener.Accept()
|
||||
if err != nil {
|
||||
fmt.Printf("Failed to accept connection: %v", err)
|
||||
continue
|
||||
}
|
||||
if server.tlsServer {
|
||||
conn = tls.Server(conn, &tlsConfig)
|
||||
}
|
||||
go server.handleConnection(conn)
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
*/
|
||||
|
||||
// faker is a struct embedding io.ReadWriter to simulate network connections for testing purposes.
|
||||
type faker struct {
|
||||
io.ReadWriter
|
||||
failOnRead bool
|
||||
failOnClose bool
|
||||
}
|
||||
|
||||
func (f faker) Close() error { return nil }
|
||||
func (f faker) Close() error {
|
||||
if f.failOnClose {
|
||||
return fmt.Errorf("faker: failed to close connection")
|
||||
}
|
||||
return nil
|
||||
}
|
||||
func (f faker) LocalAddr() net.Addr { return nil }
|
||||
func (f faker) RemoteAddr() net.Addr { return nil }
|
||||
func (f faker) SetDeadline(time.Time) error { return nil }
|
||||
|
|
@ -3486,6 +3145,8 @@ type serverProps struct {
|
|||
FailOnAuth bool
|
||||
FailOnDataInit bool
|
||||
FailOnDataClose bool
|
||||
FailOnDial bool
|
||||
FailOnEhlo bool
|
||||
FailOnHelo bool
|
||||
FailOnMailFrom bool
|
||||
FailOnNoop bool
|
||||
|
|
@ -3582,6 +3243,10 @@ func handleTestServerConnection(connection net.Conn, t *testing.T, props *server
|
|||
}
|
||||
|
||||
if !props.IsTLS {
|
||||
if props.FailOnDial {
|
||||
writeLine("421 4.4.1 Service not available")
|
||||
return
|
||||
}
|
||||
writeLine("220 go-mail test server ready ESMTP")
|
||||
}
|
||||
|
||||
|
|
@ -3595,9 +3260,9 @@ func handleTestServerConnection(connection net.Conn, t *testing.T, props *server
|
|||
var datastring string
|
||||
data = strings.TrimSpace(data)
|
||||
switch {
|
||||
case strings.HasPrefix(data, "EHLO"), strings.HasPrefix(data, "HELO"):
|
||||
case strings.HasPrefix(data, "HELO"):
|
||||
if len(strings.Split(data, " ")) != 2 {
|
||||
writeLine("501 Syntax: EHLO hostname")
|
||||
writeLine("501 Syntax: HELO hostname")
|
||||
break
|
||||
}
|
||||
if props.FailOnHelo {
|
||||
|
|
@ -3605,6 +3270,16 @@ func handleTestServerConnection(connection net.Conn, t *testing.T, props *server
|
|||
break
|
||||
}
|
||||
writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
|
||||
case strings.HasPrefix(data, "EHLO"):
|
||||
if len(strings.Split(data, " ")) != 2 {
|
||||
writeLine("501 Syntax: EHLO hostname")
|
||||
break
|
||||
}
|
||||
if props.FailOnEhlo {
|
||||
writeLine("500 5.5.2 Error: fail on EHLO")
|
||||
break
|
||||
}
|
||||
writeLine("250-localhost.localdomain\r\n" + props.FeatureSet)
|
||||
case strings.HasPrefix(data, "MAIL FROM:"):
|
||||
if props.FailOnMailFrom {
|
||||
writeLine("500 5.5.2 Error: fail on MAIL FROM")
|
||||
|
|
@ -3886,3 +3561,17 @@ type randReader struct{}
|
|||
func (r *randReader) Read([]byte) (int, error) {
|
||||
return 0, errors.New("broken reader")
|
||||
}
|
||||
|
||||
// toServerEmptyAuth is an implementation of Auth that only implements
|
||||
// the Start method, and returns "FOOAUTH", nil, nil. Notably, it returns
|
||||
// zero bytes for "toServer" so we can test that we don't send spaces at
|
||||
// the end of the line. See TestClientAuthTrimSpace.
|
||||
type toServerEmptyAuth struct{}
|
||||
|
||||
func (toServerEmptyAuth) Start(_ *ServerInfo) (proto string, toServer []byte, err error) {
|
||||
return "FOOAUTH", nil, nil
|
||||
}
|
||||
|
||||
func (toServerEmptyAuth) Next(_ []byte, _ bool) (toServer []byte, err error) {
|
||||
return nil, fmt.Errorf("unexpected call")
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue