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Add test cases for invalid HELO/EHLO commands

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Add tests to ensure HELO/EHLO commands fail with empty name, newline in name, and double execution. This improves validation and robustness of the SMTP client implementation.
This commit is contained in:
Winni Neessen 2024-11-09 14:01:02 +01:00
parent cefaa0d4ee
commit af7964450a
Signed by: wneessen
GPG key ID: 385AC9889632126E
1 changed files with 81 additions and 0 deletions
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81
smtp/smtp_test.go
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@ -1585,6 +1585,87 @@ func TestClient_Hello(t *testing.T) {
t.Errorf("failed to send HELO/EHLO to test server: %s", err)
}
})
t.Run("client HELO/EHLO with empty name should fail", func(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
PortAdder.Add(1)
serverPort := int(TestServerPortBase + PortAdder.Load())
featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
go func() {
if err := simpleSMTPServer(ctx, t, &serverProps{
FeatureSet: featureSet,
ListenPort: serverPort,
},
); err != nil {
t.Errorf("failed to start test server: %s", err)
return
}
}()
time.Sleep(time.Millisecond * 30)
client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
if err != nil {
t.Errorf("failed to dial to test server: %s", err)
}
if err = client.Hello(""); err == nil {
t.Error("HELO/EHLO with empty name should fail")
}
})
t.Run("client HELO/EHLO with newline in name should fail", func(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
PortAdder.Add(1)
serverPort := int(TestServerPortBase + PortAdder.Load())
featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
go func() {
if err := simpleSMTPServer(ctx, t, &serverProps{
FeatureSet: featureSet,
ListenPort: serverPort,
},
); err != nil {
t.Errorf("failed to start test server: %s", err)
return
}
}()
time.Sleep(time.Millisecond * 30)
client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
if err != nil {
t.Errorf("failed to dial to test server: %s", err)
}
if err = client.Hello(TestServerAddr + "\r\n"); err == nil {
t.Error("HELO/EHLO with newline should fail")
}
})
t.Run("client double HELO/EHLO should fail", func(t *testing.T) {
ctx, cancel := context.WithCancel(context.Background())
defer cancel()
PortAdder.Add(1)
serverPort := int(TestServerPortBase + PortAdder.Load())
featureSet := "250-8BITMIME\r\n250-DSN\r\n250 SMTPUTF8"
go func() {
if err := simpleSMTPServer(ctx, t, &serverProps{
FeatureSet: featureSet,
ListenPort: serverPort,
},
); err != nil {
t.Errorf("failed to start test server: %s", err)
return
}
}()
time.Sleep(time.Millisecond * 30)
client, err := Dial(fmt.Sprintf("%s:%d", TestServerAddr, serverPort))
if err != nil {
t.Errorf("failed to dial to test server: %s", err)
}
if err = client.Hello(TestServerAddr); err != nil {
t.Errorf("failed to send HELO/EHLO to test server: %s", err)
}
if err = client.Hello(TestServerAddr); err == nil {
t.Error("double HELO/EHLO should fail")
}
})
}
// Issue 17794: don't send a trailing space on AUTH command when there's no password.