Unit SMTP

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Description


Ultibo SMTP Interface unit

Constants



SMTP specific constants SMTP_*
SMTP_LINE_END = Chr(13) + Chr(10); CR LF
 
SMTP_BUFFER_SIZE = SIZE_4K;  


SMTP status SMTP_STATUS_*
SMTP_STATUS_NONE = 0;  
SMTP_STATUS_CONN = 1;  
SMTP_STATUS_HELO = 2;  
SMTP_STATUS_AUTH = 3;  
SMTP_STATUS_MAIL = 4;  
SMTP_STATUS_RCPT = 5;  
SMTP_STATUS_DATA = 6;  
SMTP_STATUS_QUIT = 7;  
 
SMTP_MAX_STATUS = 7;  


SMTP command SMTP_COMMAND_*
SMTP_COMMAND_HELO = 'HELO';  
SMTP_COMMAND_EHLO = 'EHLO';  
SMTP_COMMAND_TIME = 'TIME';  
SMTP_COMMAND_NOOP = 'NOOP';  
SMTP_COMMAND_AUTH = 'AUTH';  
SMTP_COMMAND_MAIL = 'MAIL';  
SMTP_COMMAND_RCPT = 'RCPT';  
SMTP_COMMAND_VRFY = 'VRFY';  
SMTP_COMMAND_BEGIN_DATA = 'DATA';  
SMTP_COMMAND_END_DATA = '.';  
SMTP_COMMAND_RSET = 'RSET';  
SMTP_COMMAND_QUIT = 'QUIT';  


SMTP sub command SMTP_SUB_COMMAND_*
SMTP_SUB_COMMAND_MAIL_FROM = 'FROM:';  
SMTP_SUB_COMMAND_RCPT_TO = 'TO:';  


SMTP string SMTP_STRING_*
SMTP_STRING_CONTINUE = '-';  
 
SMTP_STRING_CONN_SUCCESS = '220 ';  
SMTP_STRING_QUIT_SUCCESS = '221 ';  
SMTP_STRING_HELO_SUCCESS = '250 ';  
SMTP_STRING_EHLO_SUCCESS = '250 ';  
SMTP_STRING_TIME_SUCCESS = '250 ';  
SMTP_STRING_NOOP_SUCCESS = '250 ';  
SMTP_STRING_CONT_SUCCESS = '250-';  
SMTP_STRING_AUTH_SUCCESS = '235 ';  
SMTP_STRING_AUTH_CHALLENGE = '334 ';  
SMTP_STRING_MAIL_SUCCESS = '250 ';  
SMTP_STRING_RCPT_SUCCESS = '250 ';  
SMTP_STRING_VRFY_SUCCESS = '250 ';  
SMTP_STRING_BEGIN_DATA_SUCCESS = '354 ';  
SMTP_STRING_END_DATA_SUCCESS = '250 ';  
SMTP_STRING_RSET_SUCCESS = '250 ';  
 
SMTP_STRING_WRITE_FAILURE = '451 ';  
SMTP_STRING_COMMAND_FAILURE = '500 ';  
SMTP_STRING_SYNTAX_FAILURE = '501 ';  
SMTP_STRING_LOGON_FAILURE = '501 ';  
SMTP_STRING_SEQUENCE_FAILURE = '503 ';  
SMTP_STRING_AUTH_FAILURE = '504 ';  
SMTP_STRING_RCPT_FAILURE = '553 ';  
SMTP_STRING_VRFY_FAILURE = '550 ';  
SMTP_STRING_SIZE_FAILURE = '552 ';  
SMTP_STRING_FORWARD_FAILURE = '551 ';  
SMTP_STRING_PERMISSION_FAILURE = '571 ';  
 
SMTP_STRING_CONN_OK = 'Ultibo SMTP server (version ' + ULTIBO_RELEASE_VERSION + ')';  
SMTP_STRING_HELO_OK = 'Ultibo SMTP server - Hello, ';  
SMTP_STRING_EHLO_HEAD_OK = 'Ultibo SMTP server - Hello ';  
SMTP_STRING_EHLO_TAIL_OK = '; ESMTPs are: ';  
SMTP_STRING_AUTH_OK = 'Authenticated OK';  
SMTP_STRING_MAIL_OK = 'Sender OK - send RCPTs';  
SMTP_STRING_MAIL_SIZE_HEAD_OK = 'Sender and size (';  
SMTP_STRING_MAIL_SIZE_TAIL_OK = ') OK - send RCPTs';  
SMTP_STRING_RCPT_OK = 'Recipient OK - send RCPT or DATA';  
SMTP_STRING_VRFY_OK = 'OK - ';  
SMTP_STRING_BEGIN_DATA_OK = 'OK, send data, end with CRLF.CRLF';  
SMTP_STRING_END_DATA_OK = 'Data received OK';  
SMTP_STRING_RSET_OK = 'Command processed OK';  
SMTP_STRING_QUIT_OK = 'Ultibo SMTP server closing connection';  
SMTP_STRING_TIME_OK = 'Time is ';  
SMTP_STRING_NOOP_OK = 'OK';  
 
SMTP_STRING_BAD_COMMAND = 'Command unrecognized';  
SMTP_STRING_BAD_SYNTAX = 'Bad syntax in command';  
SMTP_STRING_BAD_SEQUENCE = 'Bad sequence of commands';  
SMTP_STRING_BAD_AUTH = 'Unrecognized authentication type';  
SMTP_STRING_BAD_LOGON = 'Authentication failed';  
SMTP_STRING_BAD_MAIL = 'Unknown sender';  
SMTP_STRING_BAD_RCPT = 'Unknown recipient';  
SMTP_STRING_BAD_VRFY = 'Mailbox not found';  


SMTP logging SMTP_LOG_*
SMTP_LOG_LEVEL_DEBUG = LOG_LEVEL_DEBUG; SMTP debugging messages
SMTP_LOG_LEVEL_INFO = LOG_LEVEL_INFO; SMTP informational messages
SMTP_LOG_LEVEL_WARN = LOG_LEVEL_WARN; SMTP warning messages
SMTP_LOG_LEVEL_ERROR = LOG_LEVEL_ERROR; SMTP error messages
SMTP_LOG_LEVEL_NONE = LOG_LEVEL_NONE; No SMTP messages


Type definitions



SMTP client notify event

TSMTPClientNotifyEvent = procedure(const ARequest:String) of Object;

SMTP host event

TSMTPHostEvent = function(AConnection:TSMTPConnection):Boolean of Object;

SMTP count event

TSMTPCountEvent = function(AConnection:TSMTPConnection):Boolean of Object;

SMTP notify event

TSMTPNotifyEvent = procedure(AConnection:TSMTPConnection; const ARequest:String) of Object;

SMTP request event

TSMTPRequestEvent = function(AConnection:TSMTPConnection; const ARequest:String; var AReply:String):Boolean of Object;

SMTP authenticate event

TSMTPAuthenticateEvent = function(AConnection:TSMTPConnection; const AMethod,AUsername,APassword:String; var AReply:String):Boolean of Object;

SMTP connection event

TSMTPConnectionEvent = procedure(AConnection:TSMTPConnection) of Object;


Class definitions



SMTP helper classes

TSMTPBuffer = class(TObject)

SMTP client classes

TSMTPClient = class(TWinsock2TCPClient)

SMTP server classes

TSMTPConnection = class(TListObject)
TSMTPListener = class(TWinsock2TCPListener)


Public variables



SMTP logging

SMTP_DEFAULT_LOG_LEVEL:LongWord = SMTP_LOG_LEVEL_DEBUG; Minimum level for SMTP messages. Only messages with level greater than or equal to this will be printed.
SMTP_LOG_ENABLED:Boolean;


Function declarations



Initialization functions

procedure SMTPInit;
Description: To be documented
Note None documented


SMTP helper functions

procedure SMTPLog(Level:LongWord; const AText:String);
Description: To be documented
Note None documented


procedure SMTPLogInfo(const AText:String); inline;
Description: To be documented
Note None documented


procedure SMTPLogWarn(const AText:String); inline;
Description: To be documented
Note None documented


procedure SMTPLogError(const AText:String); inline;
Description: To be documented
Note None documented


procedure SMTPLogDebug(const AText:String); inline;
Description: To be documented
Note None documented


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