public void TestArgumentExceptions ()
{
var credentials = new NetworkCredential ("username", "password");
var uri = new Uri ("smtp://localhost");
SaslMechanism sasl;
Assert.Throws<ArgumentNullException> (() => new SaslException (null, SaslErrorCode.MissingChallenge, "message"));
sasl = new SaslMechanismCramMd5 (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismCramMd5 (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismCramMd5 (uri, null));
Assert.Throws<NotSupportedException> (() => sasl.Challenge (null));
sasl = new SaslMechanismDigestMd5 (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismDigestMd5 (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismDigestMd5 (uri, null));
Assert.Throws<NotSupportedException> (() => sasl.Challenge (null));
sasl = new SaslMechanismLogin (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismLogin (uri, null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismLogin (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismLogin (uri, null));
Assert.Throws<NotSupportedException> (() => sasl.Challenge (null));
sasl = new SaslMechanismNtlm (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismNtlm (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismNtlm (uri, null));
Assert.DoesNotThrow (() => sasl.Challenge (null));
sasl = new SaslMechanismOAuth2 (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismOAuth2 (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismOAuth2 (uri, null));
Assert.DoesNotThrow (() => sasl.Challenge (null));
sasl = new SaslMechanismPlain (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismPlain (uri, null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismPlain (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismPlain (uri, null));
Assert.DoesNotThrow (() => sasl.Challenge (null));
sasl = new SaslMechanismScramSha1 (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismScramSha1 (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismScramSha1 (uri, null));
Assert.DoesNotThrow (() => sasl.Challenge (null));
sasl = new SaslMechanismScramSha256 (uri, credentials);
Assert.Throws<ArgumentNullException> (() => new SaslMechanismScramSha256 (null, credentials));
Assert.Throws<ArgumentNullException> (() => new SaslMechanismScramSha256 (uri, null));
Assert.DoesNotThrow (() => sasl.Challenge (null));
}
public void TestScramSha1 ()
{
const string cnonce = "fyko+d2lbbFgONRv9qkxdawL";
var uri = new Uri ("imap://elwood.innosoft.com");
var credentials = new NetworkCredential ("user", "pencil");
var sasl = new SaslMechanismScramSha1 (uri, credentials, cnonce);
string token;
var challenge = Encoding.UTF8.GetString (Convert.FromBase64String (sasl.Challenge (null)));
Assert.AreEqual ("n,,n=user,r=" + cnonce, challenge, "Initial SCRAM-SHA-1 challenge response does not match the expected string.");
Assert.IsFalse (sasl.IsAuthenticated, "SCRAM-SHA-1 should not be authenticated yet.");
token = Convert.ToBase64String (Encoding.UTF8.GetBytes ("r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,s=QSXCR+Q6sek8bf92,i=4096"));
challenge = Encoding.UTF8.GetString (Convert.FromBase64String (sasl.Challenge (token)));
const string expected = "c=biws,r=fyko+d2lbbFgONRv9qkxdawL3rfcNHYJY1ZVvWVs7j,p=v0X8v3Bz2T0CJGbJQyF0X+HI4Ts=";
Assert.AreEqual (expected, challenge, "Second SCRAM-SHA-1 challenge response does not match the expected string.");
Assert.IsFalse (sasl.IsAuthenticated, "SCRAM-SHA-1 should not be authenticated yet.");
token = Convert.ToBase64String (Encoding.UTF8.GetBytes ("v=rmF9pqV8S7suAoZWja4dJRkFsKQ="));
challenge = Encoding.UTF8.GetString (Convert.FromBase64String (sasl.Challenge (token)));
Assert.AreEqual (string.Empty, challenge, "Third SCRAM-SHA-1 challenge should be an empty string.");
Assert.IsTrue (sasl.IsAuthenticated, "SCRAM-SHA-1 should be authenticated now.");
}