//AUTHコマンド後
private String After(String recvStr)
{
var pass = "";
if (_authType == AuthType.Login)
{
if (_user == null)
{
_user = Encoding.ASCII.GetString(Convert.FromBase64String(recvStr));
return("334 UGFzc3dvcmQ6");
}
pass = Encoding.ASCII.GetString(Convert.FromBase64String(recvStr));
goto auth;
}
if (_authType == AuthType.Plain)
{
recvStr = Encoding.ASCII.GetString(Convert.FromBase64String(recvStr));
string[] tmp = recvStr.Split('\0');
if (tmp.Length == 3)
{
_user = tmp[1];
pass = tmp[2];
}
goto auth;
}
if (_authType == AuthType.CramMd5)
{
recvStr = Encoding.ASCII.GetString(Convert.FromBase64String(recvStr));
var tmp = recvStr.Split(new[] { ' ' }, 2);
if (tmp.Length == 2)
{
_user = tmp[0];
pass = _smtpAuthUserList.GetPass(_user);
if (pass != null)
{
var ret = Md5.Hash(pass, _timestamp);
if (ret == tmp[1])
{
IsFinish = true;
return("235 Authentication successful.");
}
}
}
}
return(null);
auth:
if (_smtpAuthUserList.Auth(_user, pass))
{
//認証OK
IsFinish = true;
return("235 Authentication successful.");
}
return(null);
}
public bool Auth(SmtpClientAuthKind kind, String user, String pass)
{
//トランザクションでない場合エラー
if (Status != SmtpClientStatus.Transaction)
{
SetLastError("Auth() Status != Transaction");
return(false);
}
//AUTH送信
var authStr = "";
switch (kind)
{
case SmtpClientAuthKind.Login:
authStr = "AUTH LOGIN";
break;
case SmtpClientAuthKind.Plain:
authStr = "AUTH PLAIN";
break;
case SmtpClientAuthKind.CramMd5:
authStr = "AUTH CRAM-MD5";
break;
}
if (!SendCmd(authStr))
{
return(false);
}
//334受信
if (!RecvStatus(334))
{
return(false);
}
//ユーザ・パスワード送信
switch (kind)
{
case SmtpClientAuthKind.Plain:
//ユーザ名送信
var str = String.Format("{0}\0{1}\0{2}", user, user, pass);
if (!SendCmd(String.Format(Base64.Encode(str))))
{
return(false);
}
break;
case SmtpClientAuthKind.Login:
//ユーザ名送信
if (!SendCmd(String.Format(Base64.Encode(user))))
{
return(false);
}
//334受信
if (!RecvStatus(334))
{
return(false);
}
//パスワード送信
if (!SendCmd(String.Format(Base64.Encode(pass))))
{
return(false);
}
break;
case SmtpClientAuthKind.CramMd5:
//MD5送信
var timestamp = _recvStr.Split(' ')[1];
var s = string.Format("{0} {1}", user, Md5.Hash(pass, Base64.Decode(timestamp)));
if (!SendCmd(Base64.Encode(s)))
{
return(false);
}
break;
}
//235受信
if (!RecvStatus(235))
{
return(false);
}
Status = SmtpClientStatus.Transaction;
return(true);
}
public string Set(string recvStr)
{
if (_finish || _authType == AuthType.Unknown)//認証動作 もしくは 認証モードが未対応
{
return(null);
}
int response = 0;
if (recvStr.IndexOf(' ') == 3)
{
response = Convert.ToInt32(recvStr.Substring(0, 3));
}
if (_authType == AuthType.Plain)
{
switch (_mode)
{
case 0:
_mode++;
return("AUTH PLAIN " + Base64.Encode(string.Format("\0{0}\0{1}", _user, _pass)));
case 1:
if (response == 235)
{
_mode++;
_finish = true;
return(null);
}
if (response == 334)
{
return(Base64.Encode(string.Format("\0{0}\0{1}", _user, _pass)));
}
break;
}
}
if (_authType == AuthType.Login)
{
switch (_mode)
{
case 0:
_mode++;
return("AUTH LOGIN");
//break;
case 1:
if (response == 334)
{
_mode++;
return(Base64.Encode(_user));
}
break;
case 2:
if (response == 334)
{
_mode++;
return(Base64.Encode(_pass));
}
break;
case 3:
if (response == 235)
{
_mode++;
_finish = true;
return(null);
}
break;
}
}
if (_authType == AuthType.CramMd5)
{
switch (_mode)
{
case 0:
_mode++;
return("AUTH CRAM-MD5");
//break;
case 1:
if (response == 334)
{
_mode++;
if (recvStr.Length > 5)
{
string timestamp = recvStr.Substring(4); //AUTH CRAM-MD5用のタイムスタンプ
string str = string.Format("{0} {1}", _user, Md5.Hash(_pass, Base64.Decode(timestamp)));
return(Base64.Encode(str));
}
}
break;
case 2:
if (response == 235)
{
_mode++;
_finish = true;
return(null);
}
break;
}
}
return(null);
}