/// SMTPメールサーバーへLogin認証でログインします。
/// <summary>
/// SMTPメールサーバーへLogin認証でログインします。
/// </summary>
/// <returns></returns>
public Boolean AuthenticateByLogin()
{
SmtpCommandResult rs = null;
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.Execute("Auth Login");
if (rs.StatusCode != SmtpCommandResultCode.WaitingForAuthentication)
{
return(false);
}
//ユーザー名送信
rs = this.Execute(Base64Converter.Encode(Encoding.UTF8.GetBytes(this.UserName)));
if (rs.StatusCode != SmtpCommandResultCode.WaitingForAuthentication)
{
return(false);
}
//パスワード送信
rs = this.Execute(Base64Converter.Encode(Encoding.UTF8.GetBytes(this.Password)));
if (rs.StatusCode == SmtpCommandResultCode.AuthenticationSuccessful)
{
this._State = SmtpConnectionState.Authenticated;
}
}
return(this._State == SmtpConnectionState.Authenticated);
}
private SmtpCommandResult ExecuteEhloAndHelo()
{
SmtpCommandResult rs = null;
//サーバーへメールトランザクションの開始コマンドを送信
rs = this.ExecuteEhlo();
if (rs.StatusCode != SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
rs = this.ExecuteHelo();
}
return(rs);
}
/// StartTLSコマンドをサーバーに対して送信し、暗号化された通信を開始します。
/// <summary>
/// StartTLSコマンドをサーバーに対して送信し、暗号化された通信を開始します。
/// </summary>
#if NETFX_CORE
private Boolean StartTls()
{
SmtpCommandResult rs = null;
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.Execute("STARTTLS");
if (rs.StatusCode != SmtpCommandResultCode.ServiceReady)
{
return(false);
}
base.Ssl = true;
this.EncryptedCommunication = SmtpEncryptedCommunication.Tls;
var t = this.Socket.UpgradeToSslAsync(SocketProtectionLevel.Ssl, new HostName(this.ServerName)).AsTask();
t.Wait();
return(true);
}
return(false);
}
/// SMTPメールサーバーへPlain認証でログインします。
/// <summary>
/// SMTPメールサーバーへPlain認証でログインします。
/// </summary>
/// <returns></returns>
public Boolean AuthenticateByPlain()
{
SmtpCommandResult rs = null;
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.Execute("Auth Plain");
if (rs.StatusCode != SmtpCommandResultCode.WaitingForAuthentication)
{
return(false);
}
//ユーザー名＆パスワードの文字列を送信
rs = this.Execute(MailParser.ToBase64String(String.Format("{0}\0{0}\0{1}", this.UserName, this.Password)));
if (rs.StatusCode == SmtpCommandResultCode.AuthenticationSuccessful)
{
this._State = SmtpConnectionState.Authenticated;
}
}
return(this._State == SmtpConnectionState.Authenticated);
}
/// SMTPメールサーバーへCRAM-MD5認証でログインします。
/// <summary>
/// SMTPメールサーバーへCRAM-MD5認証でログインします。
/// </summary>
/// <returns></returns>
public Boolean AuthenticateByCramMD5()
{
SmtpCommandResult rs = null;
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.Execute("Auth CRAM-MD5");
if (rs.StatusCode != SmtpCommandResultCode.WaitingForAuthentication)
{
return(false);
}
//ユーザー名＋チャレンジ文字列をBase64エンコードした文字列を送信
String s = SmtpClient.ToCramMd5String(rs.Message, this.UserName, this.Password);
rs = this.Execute(s);
if (rs.StatusCode == SmtpCommandResultCode.AuthenticationSuccessful)
{
this._State = SmtpConnectionState.Authenticated;
}
}
return(this._State == SmtpConnectionState.Authenticated);
}
private Boolean StartTls()
{
SmtpCommandResult rs = null;
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.Execute("STARTTLS");
if (rs.StatusCode != SmtpCommandResultCode.ServiceReady)
{
return(false);
}
base.Ssl = true;
this.EncryptedCommunication = SmtpEncryptedCommunication.Tls;
SslStream ssl = new SslStream(new NetworkStream(this.Socket), true, this.RemoteCertificateValidationCallback, null);
ssl.AuthenticateAsClient(this.ServerName);
this.Stream = ssl;
return(true);
}
return(false);
}
/// メールを送信し、送信結果となるSendMailListResultを取得します。
/// <summary>
/// メールを送信し、送信結果となるSendMailListResultを取得します。
/// </summary>
/// <param name="commandList"></param>
/// <returns></returns>
public SendMailListResult SendMailList(IEnumerable <SendMailCommand> commandList)
{
SmtpCommandResult rs = null;
Boolean HasRcpt = false;
//接続失敗
if (this.EnsureOpen() == SmtpConnectionState.Disconnected)
{
return(new SendMailListResult(SendMailResultState.Connection));
}
//不正な状態でのメソッドの実行
if (this.State != SmtpConnectionState.Connected &&
this.State != SmtpConnectionState.Authenticated)
{
return(new SendMailListResult(SendMailResultState.InvalidState));
}
//認証済みで無い場合
if (this.State != SmtpConnectionState.Authenticated)
{
//サーバーへメールトランザクションの開始コマンドを送信
rs = this.ExecuteEhloAndHelo();
if (rs.StatusCode != SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
return(new SendMailListResult(SendMailResultState.Helo));
}
//TLS/SSL通信
if (this.EncryptedCommunication == SmtpEncryptedCommunication.Tls)
{
if (this.StartTls() == false)
{
return(new SendMailListResult(SendMailResultState.Tls));
}
rs = this.ExecuteEhloAndHelo();
if (rs.StatusCode != SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
return(new SendMailListResult(SendMailResultState.Helo));
}
}
//ログイン認証が必要とされるかチェック
if (SmtpClient.NeedAuthenticate(rs.Message) == true)
{
this.Authenticate();
}
}
List <SendMailResult> results = new List <SendMailResult>();
foreach (var command in commandList)
{
//Mail Fromの送信
if (command.From == null ||
command.From.Value == null)
{
rs = this.ExecuteMail("");
}
else if (command.From.Value.StartsWith("<") == true)
{
rs = this.ExecuteMail(command.From.Value);
}
else
{
rs = this.ExecuteMail("<" + command.From.Value + ">");
}
if (rs.StatusCode != SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
results.Add(new SendMailResult(SendMailResultState.MailFrom, command));
continue;
}
List <MailAddress> mailAddressList = new List <MailAddress>();
//Rcpt Toの送信
StringBuilder sb = new StringBuilder();
foreach (var m in command.RcptTo)
{
String mailAddress = m.ToString();
if (mailAddress.StartsWith("<") == true && mailAddress.EndsWith(">") == true)
{
rs = this.ExecuteRcpt(mailAddress);
}
else
{
rs = this.ExecuteRcpt("<" + mailAddress + ">");
}
if (rs.StatusCode == SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
HasRcpt = true;
}
else
{
mailAddressList.Add(m);
}
sb.AppendLine(rs.Message);
}
if (HasRcpt == false)
{
results.Add(new SendMailResult(SendMailResultState.Rcpt, command, sb.ToString(), mailAddressList));
continue;
}
//Dataの送信
rs = this.ExecuteData();
if (rs.StatusCode == SmtpCommandResultCode.StartMailInput)
{
this.Send(command.Data);
rs = this.GetResponse();
if (rs.StatusCode == SmtpCommandResultCode.RequestedMailActionOkay_Completed)
{
results.Add(new SendMailResult(SendMailResultState.Success, command, rs.Message, mailAddressList));
this.ExecuteRset();
}
else
{
results.Add(new SendMailResult(SendMailResultState.Data, command, rs.Message, mailAddressList));
}
}
else
{
results.Add(new SendMailResult(SendMailResultState.Data, command, rs.Message, mailAddressList));
}
}
rs = this.ExecuteQuit();
if (results.Exists(el => el.State != SendMailResultState.Success) == true)
{
return(new SendMailListResult(SendMailResultState.SendMailData, results));
}
return(new SendMailListResult(SendMailResultState.Success, results));
}
/// SMTPメールサーバーへログインします。
/// <summary>
/// SMTPメールサーバーへログインします。
/// </summary>
/// <returns></returns>
public Boolean TryAuthenticate()
{
SmtpCommandResult rs = null;
if (this._Mode == SmtpAuthenticateMode.Auto)
{
if (this.EnsureOpen() == SmtpConnectionState.Connected)
{
rs = this.ExecuteEhlo();
String s = rs.Message.ToUpper();
//SMTP認証に対応している場合
if (s.Contains("AUTH") == true)
{
if (s.Contains("LOGIN") == true)
{
return(this.AuthenticateByLogin());
}
if (s.Contains("PLAIN") == true)
{
return(this.AuthenticateByPlain());
}
if (s.Contains("CRAM-MD5") == true)
{
return(this.AuthenticateByCramMD5());
}
}
else
{
rs = this.ExecuteEhlo();
return(rs.StatusCode == SmtpCommandResultCode.ServiceReady);
}
//TLS認証
if (this.EncryptedCommunication == SmtpEncryptedCommunication.Tls)
{
if (s.Contains("STARTTLS") == false)
{
throw new MailClientException("TLS is not allowed.");
}
this.StartTls();
rs = this.ExecuteEhlo();
return(rs.StatusCode == SmtpCommandResultCode.ServiceReady);
}
}
}
else
{
switch (this._Mode)
{
case SmtpAuthenticateMode.None: return(true);
case SmtpAuthenticateMode.Plain: return(this.AuthenticateByPlain());
case SmtpAuthenticateMode.Login: return(this.AuthenticateByLogin());
case SmtpAuthenticateMode.Cram_MD5: return(this.AuthenticateByCramMD5());
case SmtpAuthenticateMode.PopBeforeSmtp:
{
Boolean bl = this._Pop3Client.TryAuthenticate();
this._Pop3Client.Close();
return(bl);
}
}
throw new InvalidOperationException();
}
return(false);
}
