SMTP Klassenreferenz

Aufstellung aller Elemente

Öffentliche Methoden
	__construct ()
	Connect ($host, $port=0, $tval=30)
	StartTLS ()
	Authenticate ($username, $password)
	Connected ()
	Close ()
	Data ($msg_data)
	Hello ($host= '')
	Mail ($from)
	Quit ($close_on_error=true)
	Recipient ($to)
	Reset ()
	SendAndMail ($from)
	Turn ()
	getError ()
Öffentliche Attribute
	$SMTP_PORT = 25
	$CRLF = "\r\n"
	$do_debug
	$do_verp = false

---

Ausführliche Beschreibung

SMTP is rfc 821 compliant and implements all the rfc 821 SMTP commands except TURN which will always return a not implemented error. SMTP also provides some utility methods for sending mail to an SMTP server. original author: Chris Ryan

Definiert in Zeile 49 der Datei class.smtp.php.

---

Beschreibung der Konstruktoren und Destruktoren

SMTP::__construct

(

)

Initialize the class so that the data is in a known state. public

Rückgabe:

void

Definiert in Zeile 87 der Datei class.smtp.php.

                                {
    $this->smtp_conn = 0;
    $this->error = null;
    $this->helo_rply = null;

    $this->do_debug = 0;
  }

---

Dokumentation der Elementfunktionen

SMTP::Authenticate	(	$	username,
		$	password
	)

Performs SMTP authentication. Must be run after running the Hello() method. Returns true if successfully authenticated. public

Rückgabe:

bool

Definiert in Zeile 210 der Datei class.smtp.php.

                                                     {
    // Start authentication
    fputs($this->smtp_conn,"AUTH LOGIN" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($code != 334) {
      $this->error =
        array("error" => "AUTH not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    // Send encoded username
    fputs($this->smtp_conn, base64_encode($username) . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($code != 334) {
      $this->error =
        array("error" => "Username not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    // Send encoded password
    fputs($this->smtp_conn, base64_encode($password) . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($code != 235) {
      $this->error =
        array("error" => "Password not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    return true;
  }

SMTP::Close

(

)

Closes the socket and cleans up the state of the class. It is not considered good to use this function without first trying to use QUIT. public

Rückgabe:

void

Definiert in Zeile 293 der Datei class.smtp.php.

                          {
    $this->error = null; // so there is no confusion
    $this->helo_rply = null;
    if(!empty($this->smtp_conn)) {
      // close the connection and cleanup
      fclose($this->smtp_conn);
      $this->smtp_conn = 0;
    }
  }

Hier ist ein Graph der zeigt, wo diese Funktion aufgerufen wird:

SMTP::Connect	(	$	host,
		$	port = 0,
		$	tval = 30
	)

Connect to the server specified on the port specified. If the port is not specified use the default SMTP_PORT. If tval is specified then a connection will try and be established with the server for that number of seconds. If tval is not specified the default is 30 seconds to try on the connection.

SMTP CODE SUCCESS: 220 SMTP CODE FAILURE: 421 public

Rückgabe:

bool

Definiert in Zeile 112 der Datei class.smtp.php.

                                                        {
    // set the error val to null so there is no confusion
    $this->error = null;

    // make sure we are __not__ connected
    if($this->connected()) {
      // already connected, generate error
      $this->error = array("error" => "Already connected to a server");
      return false;
    }

    if(empty($port)) {
      $port = $this->SMTP_PORT;
    }

    // connect to the smtp server
    $this->smtp_conn = @fsockopen($host,    // the host of the server
                                 $port,    // the port to use
                                 $errno,   // error number if any
                                 $errstr,  // error message if any
                                 $tval);   // give up after ? secs
    // verify we connected properly
    if(empty($this->smtp_conn)) {
      $this->error = array("error" => "Failed to connect to server",
                           "errno" => $errno,
                           "errstr" => $errstr);
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": $errstr ($errno)" . $this->CRLF . '<br />';
      }
      return false;
    }

    // SMTP server can take longer to respond, give longer timeout for first read
    // Windows does not have support for this timeout function
    if(substr(PHP_OS, 0, 3) != "WIN")
     socket_set_timeout($this->smtp_conn, $tval, 0);

    // get any announcement
    $announce = $this->get_lines();

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $announce . $this->CRLF . '<br />';
    }

    return true;
  }

SMTP::Connected

(

)

Returns true if connected to a server otherwise false public

Rückgabe:

bool

Definiert in Zeile 270 der Datei class.smtp.php.

                              {
    if(!empty($this->smtp_conn)) {
      $sock_status = socket_get_status($this->smtp_conn);
      if($sock_status["eof"]) {
        // the socket is valid but we are not connected
        if($this->do_debug >= 1) {
            echo "SMTP -> NOTICE:" . $this->CRLF . "EOF caught while checking if connected";
        }
        $this->Close();
        return false;
      }
      return true; // everything looks good
    }
    return false;
  }

Hier ist ein Graph der zeigt, was diese Funktion aufruft:

SMTP::Data

(

$

msg_data

)

Issues a data command and sends the msg_data to the server finializing the mail transaction. $msg_data is the message that is to be send with the headers. Each header needs to be on a single line followed by a <CRLF> with the message headers and the message body being seperated by and additional <CRLF>.

Implements rfc 821: DATA <CRLF>

SMTP CODE INTERMEDIATE: 354 [data] <CRLF>.<CRLF> SMTP CODE SUCCESS: 250 SMTP CODE FAILURE: 552,554,451,452 SMTP CODE FAILURE: 451,554 SMTP CODE ERROR : 500,501,503,421 public

Rückgabe:

bool

Definiert in Zeile 326 der Datei class.smtp.php.

                                  {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
              "error" => "Called Data() without being connected");
      return false;
    }

    fputs($this->smtp_conn,"DATA" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 354) {
      $this->error =
        array("error" => "DATA command not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    /* the server is ready to accept data!
     * according to rfc 821 we should not send more than 1000
     * including the CRLF
     * characters on a single line so we will break the data up
     * into lines by \r and/or \n then if needed we will break
     * each of those into smaller lines to fit within the limit.
     * in addition we will be looking for lines that start with
     * a period '.' and append and additional period '.' to that
     * line. NOTE: this does not count towards limit.
     */

    // normalize the line breaks so we know the explode works
    $msg_data = str_replace("\r\n","\n",$msg_data);
    $msg_data = str_replace("\r","\n",$msg_data);
    $lines = explode("\n",$msg_data);

    /* we need to find a good way to determine is headers are
     * in the msg_data or if it is a straight msg body
     * currently I am assuming rfc 822 definitions of msg headers
     * and if the first field of the first line (':' sperated)
     * does not contain a space then it _should_ be a header
     * and we can process all lines before a blank "" line as
     * headers.
     */

    $field = substr($lines[0],0,strpos($lines[0],":"));
    $in_headers = false;
    if(!empty($field) && !strstr($field," ")) {
      $in_headers = true;
    }

    $max_line_length = 998; // used below; set here for ease in change

    while(list(,$line) = @each($lines)) {
      $lines_out = null;
      if($line == "" && $in_headers) {
        $in_headers = false;
      }
      // ok we need to break this line up into several smaller lines
      while(strlen($line) > $max_line_length) {
        $pos = strrpos(substr($line,0,$max_line_length)," ");

        // Patch to fix DOS attack
        if(!$pos) {
          $pos = $max_line_length - 1;
          $lines_out[] = substr($line,0,$pos);
          $line = substr($line,$pos);
        } else {
          $lines_out[] = substr($line,0,$pos);
          $line = substr($line,$pos + 1);
        }

        /* if processing headers add a LWSP-char to the front of new line
         * rfc 822 on long msg headers
         */
        if($in_headers) {
          $line = "\t" . $line;
        }
      }
      $lines_out[] = $line;

      // send the lines to the server
      while(list(,$line_out) = @each($lines_out)) {
        if(strlen($line_out) > 0)
        {
          if(substr($line_out, 0, 1) == ".") {
            $line_out = "." . $line_out;
          }
        }
        fputs($this->smtp_conn,$line_out . $this->CRLF);
      }
    }

    // message data has been sent
    fputs($this->smtp_conn, $this->CRLF . "." . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 250) {
      $this->error =
        array("error" => "DATA not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }
    return true;
  }

SMTP::getError

(

)

Get the current error public

Rückgabe:

array

Definiert in Zeile 778 der Datei class.smtp.php.

                             {
    return $this->error;
  }

SMTP::Hello

(

$

host = ''

)

Sends the HELO command to the smtp server. This makes sure that we and the server are in the same known state.

Implements from rfc 821: HELO <SP> <domain> <CRLF>

SMTP CODE SUCCESS: 250 SMTP CODE ERROR : 500, 501, 504, 421 public

Rückgabe:

bool

Definiert in Zeile 463 der Datei class.smtp.php.

                                    {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
            "error" => "Called Hello() without being connected");
      return false;
    }

    // if hostname for HELO was not specified send default
    if(empty($host)) {
      // determine appropriate default to send to server
      $host = "localhost";
    }

    // Send extended hello first (RFC 2821)
    if(!$this->SendHello("EHLO", $host)) {
      if(!$this->SendHello("HELO", $host)) {
        return false;
      }
    }

    return true;
  }

SMTP::Mail

(

$

from

)

Starts a mail transaction from the email address specified in $from. Returns true if successful or false otherwise. If True the mail transaction is started and then one or more Recipient commands may be called followed by a Data command.

Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>

SMTP CODE SUCCESS: 250 SMTP CODE SUCCESS: 552,451,452 SMTP CODE SUCCESS: 500,501,421 public

Rückgabe:

bool

Definiert in Zeile 533 der Datei class.smtp.php.

                              {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
              "error" => "Called Mail() without being connected");
      return false;
    }

    $useVerp = ($this->do_verp ? "XVERP" : "");
    fputs($this->smtp_conn,"MAIL FROM:<" . $from . ">" . $useVerp . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 250) {
      $this->error =
        array("error" => "MAIL not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }
    return true;
  }

SMTP::Quit

(

$

close_on_error = true

)

Sends the quit command to the server and then closes the socket if there is no error or the $close_on_error argument is true.

Implements from rfc 821: QUIT <CRLF>

SMTP CODE SUCCESS: 221 SMTP CODE ERROR : 500 public

Rückgabe:

bool

Definiert in Zeile 576 der Datei class.smtp.php.

                                               {
    $this->error = null; // so there is no confusion

    if(!$this->connected()) {
      $this->error = array(
              "error" => "Called Quit() without being connected");
      return false;
    }

    // send the quit command to the server
    fputs($this->smtp_conn,"quit" . $this->CRLF);

    // get any good-bye messages
    $byemsg = $this->get_lines();

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $byemsg . $this->CRLF . '<br />';
    }

    $rval = true;
    $e = null;

    $code = substr($byemsg,0,3);
    if($code != 221) {
      // use e as a tmp var cause Close will overwrite $this->error
      $e = array("error" => "SMTP server rejected quit command",
                 "smtp_code" => $code,
                 "smtp_rply" => substr($byemsg,4));
      $rval = false;
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $e["error"] . ": " . $byemsg . $this->CRLF . '<br />';
      }
    }

    if(empty($e) || $close_on_error) {
      $this->Close();
    }

    return $rval;
  }

Hier ist ein Graph der zeigt, was diese Funktion aufruft:

SMTP::Recipient

(

$

to

)

Sends the command RCPT to the SMTP server with the TO: argument of $to. Returns true if the recipient was accepted false if it was rejected.

Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>

SMTP CODE SUCCESS: 250,251 SMTP CODE FAILURE: 550,551,552,553,450,451,452 SMTP CODE ERROR : 500,501,503,421 public

Rückgabe:

bool

Definiert in Zeile 629 der Datei class.smtp.php.

                                 {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
              "error" => "Called Recipient() without being connected");
      return false;
    }

    fputs($this->smtp_conn,"RCPT TO:<" . $to . ">" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 250 && $code != 251) {
      $this->error =
        array("error" => "RCPT not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }
    return true;
  }

SMTP::Reset

(

)

Sends the RSET command to abort and transaction that is currently in progress. Returns true if successful false otherwise.

Implements rfc 821: RSET <CRLF>

SMTP CODE SUCCESS: 250 SMTP CODE ERROR : 500,501,504,421 public

Rückgabe:

bool

Definiert in Zeile 672 der Datei class.smtp.php.

                          {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
              "error" => "Called Reset() without being connected");
      return false;
    }

    fputs($this->smtp_conn,"RSET" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 250) {
      $this->error =
        array("error" => "RSET failed",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    return true;
  }

SMTP::SendAndMail

(

$

from

)

Starts a mail transaction from the email address specified in $from. Returns true if successful or false otherwise. If True the mail transaction is started and then one or more Recipient commands may be called followed by a Data command. This command will send the message to the users terminal if they are logged in and send them an email.

Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>

SMTP CODE SUCCESS: 250 SMTP CODE SUCCESS: 552,451,452 SMTP CODE SUCCESS: 500,501,502,421 public

Rückgabe:

bool

Definiert in Zeile 720 der Datei class.smtp.php.

                                     {
    $this->error = null; // so no confusion is caused

    if(!$this->connected()) {
      $this->error = array(
          "error" => "Called SendAndMail() without being connected");
      return false;
    }

    fputs($this->smtp_conn,"SAML FROM:" . $from . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 250) {
      $this->error =
        array("error" => "SAML not accepted from server",
              "smtp_code" => $code,
              "smtp_msg" => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }
    return true;
  }

SMTP::StartTLS

(

)

Initiate a TLS communication with the server.

SMTP CODE 220 Ready to start TLS SMTP CODE 501 Syntax error (no parameters allowed) SMTP CODE 454 TLS not available due to temporary reason public

Rückgabe:

bool success

Definiert in Zeile 168 der Datei class.smtp.php.

                             {
    $this->error = null; # to avoid confusion

    if(!$this->connected()) {
      $this->error = array("error" => "Called StartTLS() without being connected");
      return false;
    }

    fputs($this->smtp_conn,"STARTTLS" . $this->CRLF);

    $rply = $this->get_lines();
    $code = substr($rply,0,3);

    if($this->do_debug >= 2) {
      echo "SMTP -> FROM SERVER:" . $rply . $this->CRLF . '<br />';
    }

    if($code != 220) {
      $this->error =
         array("error"     => "STARTTLS not accepted from server",
               "smtp_code" => $code,
               "smtp_msg"  => substr($rply,4));
      if($this->do_debug >= 1) {
        echo "SMTP -> ERROR: " . $this->error["error"] . ": " . $rply . $this->CRLF . '<br />';
      }
      return false;
    }

    // Begin encrypted connection
    if(!stream_socket_enable_crypto($this->smtp_conn, true, STREAM_CRYPTO_METHOD_TLS_CLIENT)) {
      return false;
    }

    return true;
  }

SMTP::Turn

(

)

This is an optional command for SMTP that this class does not support. This method is here to make the RFC821 Definition complete for this class and __may__ be implimented in the future

Implements from rfc 821: TURN <CRLF>

SMTP CODE SUCCESS: 250 SMTP CODE FAILURE: 502 SMTP CODE ERROR : 500, 503 public

Rückgabe:

bool

Definiert in Zeile 764 der Datei class.smtp.php.

                         {
    $this->error = array("error" => "This method, TURN, of the SMTP ".
                                    "is not implemented");
    if($this->do_debug >= 1) {
      echo "SMTP -> NOTICE: " . $this->error["error"] . $this->CRLF . '<br />';
    }
    return false;
  }

---

Dokumentation der Datenelemente

SMTP::$CRLF = "\r\n"

Definiert in Zeile 60 der Datei class.smtp.php.

SMTP::$do_debug

Definiert in Zeile 66 der Datei class.smtp.php.

SMTP::$do_verp = false

Definiert in Zeile 72 der Datei class.smtp.php.

SMTP::$SMTP_PORT = 25

Definiert in Zeile 54 der Datei class.smtp.php.

---

Die Dokumentation für diese Klasse wurde erzeugt aufgrund der Datei:

• class.smtp.php