private string sendAndExpect(string toSend, int statusCode)
{
if (toSend != null)
{
_writer.Write(toSend + "\r\n");
_conversation.Add("> " + toSend);
_log.Debug(8, "> " + toSend);
}
string response = "";
Match m;
do
{
var line = _reader.ReadLine();
_conversation.Add("< " + line);
_log.Debug(8, "< " + line);
m = Regex.Match(line, @"^(\d+)(-| |$)?(.*)?$");
if (!m.Success)
{
throw new RTSmtpException("Expected status code '{0}', got unexpected line: {1}".Fmt(statusCode, line), _conversation);
}
if (int.Parse(m.Groups[1].Value) != statusCode)
{
throw new RTSmtpException("Expected status code '{0}', got: {1}.".Fmt(statusCode, line), _conversation);
}
response += m.Groups[3].Value.Trim() + Environment.NewLine;
}while (m.Groups[2].Value == "-");
return(response);
}
/// <summary>
/// Creates a connection to the SMTP server and authenticates the specified user.</summary>
/// <param name="host">
/// SMTP host name.</param>
/// <param name="port">
/// SMTP host port.</param>
/// <param name="username">
/// SMTP username.</param>
/// <param name="password">
/// SMTP password.</param>
/// <param name="encryption">
/// Encryption mode.</param>
/// <param name="log">
/// The SMTP client logs various messages to this log at various verbosity levels.</param>
/// <param name="timeout">
/// Network stream read/write timeout, in milliseconds.</param>
/// <exception cref="RTSmtpException">
/// SMTP protocol error, or authentication failed.</exception>
/// <exception cref="IOException">
/// Network error or timeout.</exception>
public RTSmtpClient(string host, int port, string username = null, string password = null, SmtpEncryption encryption = SmtpEncryption.None, LoggerBase log = null, int timeout = 10000)
{
_log = log ?? new NullLogger();
_log.Debug(2, "Connecting to {0}:{1}...".Fmt(host, port));
_tcp = new TcpClient(host, port);
_tcpStream = _tcp.GetStream();
if (encryption == SmtpEncryption.Ssl || encryption == SmtpEncryption.SslIgnoreCert)
{
if (encryption == SmtpEncryption.Ssl)
{
_sslStream = new SslStream(_tcpStream);
}
else
{
_sslStream = new SslStream(_tcpStream, false, (_, __, ___, ____) => true);
}
_sslStream.AuthenticateAsClient(host);
_log.Debug(3, "SSL: authenticated as client");
}
(_sslStream ?? _tcpStream).ReadTimeout = timeout;
(_sslStream ?? _tcpStream).WriteTimeout = timeout;
_writer = new StreamWriter(_sslStream ?? _tcpStream, new UTF8Encoding(false))
{
NewLine = "\r\n", AutoFlush = true
};
_reader = new StreamReader(_sslStream ?? _tcpStream, Encoding.UTF8);
_conversation = new List <string>();
sendAndExpect(null, 220);
sendAndExpect("EHLO localhost", 250);
if (username == null || password == null)
{
_log.Debug(3, "Connected without authentication.");
return;
}
var result = sendAndExpect("AUTH LOGIN", 334).Trim();
var resultDec = Convert.FromBase64String(result).FromUtf8();
if (resultDec != "Username:"******"Expected 'Username:'******'{0}'".Fmt(resultDec), _conversation);
}
result = sendAndExpect(Convert.ToBase64String(username.ToUtf8()), 334).Trim();
resultDec = Convert.FromBase64String(result).FromUtf8();
if (resultDec != "Password:"******"Expected 'Password:'******'{0}'".Fmt(resultDec), _conversation);
}
sendAndExpect(Convert.ToBase64String(password.ToUtf8()), 235);
_log.Debug(3, "Connected.");
}
private HResponse performRequest(HttpWebRequest request)
{
Log.Debug(1, "Requested ({0}) URL \"{1}\"".Fmt(request.Method, request.RequestUri.OriginalString));
for (int i = 0; i < request.Headers.Count; i++)
{
Log.Debug(3, " " + request.Headers.AllKeys[i] + ": " + request.Headers[i]);
}
if (request.CookieContainer != null && request.CookieContainer.Count > 0)
{
Log.Debug(3, " Cookie: " + request.CookieContainer.GetCookieHeader(request.RequestUri));
}
HResponse result;
HttpWebResponse resp;
try
{
resp = (HttpWebResponse)request.GetResponse();
if (resp == null)
{
throw new WebException("Received a null response.");
}
result = new HResponse(resp);
}
catch (WebException e)
{
if (e.Response == null)
{
throw new WebException("Caught WebException containing no response.", e);
}
else
{
result = new HResponse(resp = (HttpWebResponse)e.Response);
}
}
Log.Debug(2, "Response: " + result.StatusCode + " - " + result.DataString.SubstringSafe(0, 50));
for (int i = 0; i < resp.Headers.Count; i++)
{
Log.Debug(3, " " + resp.Headers.AllKeys[i] + ": " + resp.Headers[i]);
}
return(result);
}
/// <summary>
/// Creates a connection to the SMTP server and authenticates the specified user.</summary>
/// <param name="host">
/// SMTP host name.</param>
/// <param name="port">
/// SMTP host port.</param>
/// <param name="username">
/// SMTP username.</param>
/// <param name="password">
/// SMTP password.</param>
/// <param name="encryption">
/// Encryption mode.</param>
/// <param name="log">
/// The SMTP client logs various messages to this log at various verbosity levels.</param>
/// <param name="timeout">
/// Network stream read/write timeout, in milliseconds.</param>
/// <exception cref="RTSmtpException">
/// SMTP protocol error, or authentication failed.</exception>
/// <exception cref="IOException">
/// Network error or timeout.</exception>
public RTSmtpClient(string host, int port, string username, string password, SmtpEncryption encryption = SmtpEncryption.None, LoggerBase log = null, int timeout = 10000)
{
_log = log ?? new NullLogger();
_log.Debug(2, "Connecting to {0}:{1}...".Fmt(host, port));
_tcp = new TcpClient(host, port);
_tcpStream = _tcp.GetStream();
if (encryption == SmtpEncryption.Ssl || encryption == SmtpEncryption.SslIgnoreCert)
{
if (encryption == SmtpEncryption.Ssl)
_sslStream = new SslStream(_tcpStream);
else
_sslStream = new SslStream(_tcpStream, false, (_, __, ___, ____) => true);
_sslStream.AuthenticateAsClient(host);
_log.Debug(3, "SSL: authenticated as client");
}
(_sslStream ?? _tcpStream).ReadTimeout = timeout;
(_sslStream ?? _tcpStream).WriteTimeout = timeout;
_writer = new StreamWriter(_sslStream ?? _tcpStream, new UTF8Encoding(false)) { NewLine = "\r\n", AutoFlush = true };
_reader = new StreamReader(_sslStream ?? _tcpStream, Encoding.UTF8);
_conversation = new List<string>();
sendAndExpect(null, 220);
sendAndExpect("EHLO localhost", 250);
var result = sendAndExpect("AUTH LOGIN", 334).Trim();
var resultDec = Convert.FromBase64String(result).FromUtf8();
if (resultDec != "Username:"******"Expected 'Username:'******'{0}'".Fmt(resultDec), _conversation);
result = sendAndExpect(Convert.ToBase64String(username.ToUtf8()), 334).Trim();
resultDec = Convert.FromBase64String(result).FromUtf8();
if (resultDec != "Password:"******"Expected 'Password:'******'{0}'".Fmt(resultDec), _conversation);
sendAndExpect(Convert.ToBase64String(password.ToUtf8()), 235);
_log.Debug(3, "Connected.");
}