# File Source for class.smtp.php

# Source for file class.smtp.php

Documentation is available at class.smtp.php

    <?php
    /*~ class.smtp.php
    .---------------------------------------------------------------------------.
    |  Software: PHPMailer - PHP email class                                    |
    |   Version: 2.0.4                                                          |
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    |      Info: http://phpmailer.sourceforge.net                               |
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    | ------------------------------------------------------------------------- |
    |    Author: Andy Prevost (project admininistrator)                         |
    |    Author: Brent R. Matzelle (original founder)                           |
    | Copyright (c) 2004-2007, Andy Prevost. All Rights Reserved.               |
    | Copyright (c) 2001-2003, Brent R. Matzelle                                |
    | ------------------------------------------------------------------------- |
    |   License: Distributed under the Lesser General Public License (LGPL)     |
    |            http://www.gnu.org/copyleft/lesser.html                        |
    | This program is distributed in the hope that it will be useful - WITHOUT  |
    | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or     |
    | FITNESS FOR A PARTICULAR PURPOSE.                                         |
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    '---------------------------------------------------------------------------'

    /**
     * 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.
     * @package PHPMailer
     * @author Chris Ryan
     */

    class SMTP
    {
      /**
       *  SMTP server port
       *  @var int
       */
      var $SMTP_PORT = 25;

      /**
       *  SMTP reply line ending
       *  @var string
       */
      var $CRLF = "\r\n";

      /**
       *  Sets whether debugging is turned on
       *  @var bool
       */
      var $do_debug;       # the level of debug to perform

      /**
       *  Sets VERP use on/off (default is off)
       *  @var bool
       */
      var $do_verp = false;

      /**#@+
       * @access private
       */
      var $smtp_conn;      # the socket to the server

      var $error;          # error if any on the last call

      var $helo_rply;      # the reply the server sent to us for HELO

      /**#@-*/

      /**
       * Initialize the class so that the data is in a known state.
       * @access public
       * @return void
       */
      function SMTP() {
        $this->smtp_conn = 0;
        $this->error = null;
        $this->helo_rply = null;

        $this->do_debug = 0;
      }

      /***********************************************************
       *                    CONNECTION FUNCTIONS                  *
       ***********************************************************/

      /**
       * 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
       * @access public
       * @return bool
       */
      function Connect($host,$port=0,$tval=30) {
        # set the error val to null so there is no confusion
        $this->error = null;

        # make sure we are __not__ connected
        if($this->connected()) {
          # ok we are connected! what should we do?
          # for now we will just give an error saying we
          # are already connected
          $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;
          }
          return false;
        }

        # sometimes the SMTP server takes a little longer to respond
        # so we will give it a longer timeout for the first read
        // Windows still 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 stuff
        $announce = $this->get_lines();

        # set the timeout  of any socket functions at 1/10 of a second
        //if(function_exists("socket_set_timeout"))
        //   socket_set_timeout($this->smtp_conn, 0, 100000);

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

        return true;
      }

      /**
       * Performs SMTP authentication.  Must be run after running the
       * Hello() method.  Returns true if successfully authenticated.
       * @access public
       * @return bool
       */
      function Authenticate($username, $password) {
        // Start authentication
        fputs($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;
          }
          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;
          }
          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;
          }
          return false;
        }

        return true;
      }

      /**
       * Returns true if connected to a server otherwise false
       * @access private
       * @return bool
       */
      function Connected() {
        if(!empty($this->smtp_conn)) {
          $sock_status = socket_get_status($this->smtp_conn);
          if($sock_status["eof"]) {
            # hmm this is an odd situation... the socket is
            # valid but we are not connected anymore
            if($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;
      }

      /**
       * 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.
       * @access public
       * @return void
       */
      function Close() {
        $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;
        }
      }

      /*************************************************************
       *                        SMTP COMMANDS                       *
       *************************************************************/

      /**
       * Issues a data command and sends the msg_data to the server
       * finializing the mail transaction. $msg_data is the message
       * that is to be send with the headers. Each header needs to be
       * on a single line followed by a <CRLF> with the message headers
       * and the message body being seperated by and additional <CRLF>.
       *
       * Implements rfc 821: DATA <CRLF>
       *
       * SMTP CODE INTERMEDIATE: 354
       *     [data]
       *     <CRLF>.<CRLF>
       *     SMTP CODE SUCCESS: 250
       *     SMTP CODE FAILURE: 552,554,451,452
       * SMTP CODE FAILURE: 451,554
       * SMTP CODE ERROR  : 500,501,503,421
       * @access public
       * @return bool
       */
      function Data($msg_data) {
        $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:" . $this->CRLF . $rply;
        }

        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;
          }
          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 are 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,$pos + 1);
            # if we are processing headers we need to
            # add a LWSP-char to the front of the new line
            # rfc 822 on long msg headers
            if($in_headers) {
              $line = "\t" . $line;
            }
          }
          $lines_out[] = $line;

          # now 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);
          }
        }

        # ok all the message data has been sent so lets get this
        # over with aleady
        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:" . $this->CRLF . $rply;
        }

        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;
          }
          return false;
        }
        return true;
      }

      /**
       * Expand takes the name and asks the server to list all the
       * people who are members of the _list_. Expand will return
       * back and array of the result or false if an error occurs.
       * Each value in the array returned has the format of:
       *     [ <full-name> <sp> ] <path>
       * The definition of <path> is defined in rfc 821
       *
       * Implements rfc 821: EXPN <SP> <string> <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE FAILURE: 550
       * SMTP CODE ERROR  : 500,501,502,504,421
       * @access public
       * @return string array
       */
      function Expand($name) {
        $this->error = null; # so no confusion is caused

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

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

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

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

        if($code != 250) {
          $this->error =
            array("error" => "EXPN 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;
          }
          return false;
        }

        # parse the reply and place in our array to return to user
        $entries = explode($this->CRLF,$rply);
        while(list(,$l) = @each($entries)) {
          $list[] = substr($l,4);
        }

        return $list;
      }

      /**
       * 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
       * @access public
       * @return bool
       */
      function Hello($host="") {
        $this->error = null; # so no confusion is caused

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

        # if a hostname for the HELO was not specified determine
        # a suitable one to send
        if(empty($host)) {
          # we need to determine some sort of appopiate default
          # to send to the server
          $host = "localhost";
        }

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

        return true;
      }

      /**
       * Sends a HELO/EHLO command.
       * @access private
       * @return bool
       */
      function SendHello($hello, $host) {
        fputs($this->smtp_conn, $hello . " " . $host . $this->CRLF);

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

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

        if($code != 250) {
          $this->error =
            array("error" => $hello . " 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;
          }
          return false;
        }

        $this->helo_rply = $rply;

        return true;
      }

      /**
       * Gets help information on the keyword specified. If the keyword
       * is not specified then returns generic help, ussually contianing
       * A list of keywords that help is available on. This function
       * returns the results back to the user. It is up to the user to
       * handle the returned data. If an error occurs then false is
       * returned with $this->error set appropiately.
       *
       * Implements rfc 821: HELP [ <SP> <string> ] <CRLF>
       *
       * SMTP CODE SUCCESS: 211,214
       * SMTP CODE ERROR  : 500,501,502,504,421
       * @access public
       * @return string
       */
      function Help($keyword="") {
        $this->error = null; # to avoid confusion

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

        $extra = "";
        if(!empty($keyword)) {
          $extra = " " . $keyword;
        }

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

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

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

        if($code != 211 && $code != 214) {
          $this->error =
            array("error" => "HELP 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;
          }
          return false;
        }

        return $rply;
      }

      /**
       * Starts a mail transaction from the email address specified in
       * $from. Returns true if successful or false otherwise. If True
       * the mail transaction is started and then one or more Recipient
       * commands may be called followed by a Data command.
       *
       * Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE SUCCESS: 552,451,452
       * SMTP CODE SUCCESS: 500,501,421
       * @access public
       * @return bool
       */
      function Mail($from) {
        $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:" . $this->CRLF . $rply;
        }

        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;
          }
          return false;
        }
        return true;
      }

      /**
       * Sends the command NOOP to the SMTP server.
       *
       * Implements from rfc 821: NOOP <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE ERROR  : 500, 421
       * @access public
       * @return bool
       */
      function Noop() {
        $this->error = null; # so no confusion is caused

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

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

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

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

        if($code != 250) {
          $this->error =
            array("error" => "NOOP 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;
          }
          return false;
        }
        return true;
      }

      /**
       * Sends the quit command to the server and then closes the socket
       * if there is no error or the $close_on_error argument is true.
       *
       * Implements from rfc 821: QUIT <CRLF>
       *
       * SMTP CODE SUCCESS: 221
       * SMTP CODE ERROR  : 500
       * @access public
       * @return bool
       */
      function Quit($close_on_error=true) {
        $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:" . $this->CRLF . $byemsg;
        }

        $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;
          }
        }

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

        return $rval;
      }

      /**
       * Sends the command RCPT to the SMTP server with the TO: argument of $to.
       * Returns true if the recipient was accepted false if it was rejected.
       *
       * Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
       *
       * SMTP CODE SUCCESS: 250,251
       * SMTP CODE FAILURE: 550,551,552,553,450,451,452
       * SMTP CODE ERROR  : 500,501,503,421
       * @access public
       * @return bool
       */
      function Recipient($to) {
        $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:" . $this->CRLF . $rply;
        }

        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;
          }
          return false;
        }
        return true;
      }

      /**
       * 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
       * @access public
       * @return bool
       */
      function Reset() {
        $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:" . $this->CRLF . $rply;
        }

        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;
          }
          return false;
        }

        return true;
      }

      /**
       * Starts a mail transaction from the email address specified in
       * $from. Returns true if successful or false otherwise. If True
       * the mail transaction is started and then one or more Recipient
       * commands may be called followed by a Data command. This command
       * will send the message to the users terminal if they are logged
       * in.
       *
       * Implements rfc 821: SEND <SP> FROM:<reverse-path> <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE SUCCESS: 552,451,452
       * SMTP CODE SUCCESS: 500,501,502,421
       * @access public
       * @return bool
       */
      function Send($from) {
        $this->error = null; # so no confusion is caused

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

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

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

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

        if($code != 250) {
          $this->error =
            array("error" => "SEND 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;
          }
          return false;
        }
        return true;
      }

      /**
       * Starts a mail transaction from the email address specified in
       * $from. Returns true if successful or false otherwise. If True
       * the mail transaction is started and then one or more Recipient
       * commands may be called followed by a Data command. This command
       * will send the message to the users terminal if they are logged
       * in and send them an email.
       *
       * Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE SUCCESS: 552,451,452
       * SMTP CODE SUCCESS: 500,501,502,421
       * @access public
       * @return bool
       */
      function SendAndMail($from) {
        $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:" . $this->CRLF . $rply;
        }

        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;
          }
          return false;
        }
        return true;
      }

      /**
       * Starts a mail transaction from the email address specified in
       * $from. Returns true if successful or false otherwise. If True
       * the mail transaction is started and then one or more Recipient
       * commands may be called followed by a Data command. This command
       * will send the message to the users terminal if they are logged
       * in or mail it to them if they are not.
       *
       * Implements rfc 821: SOML <SP> FROM:<reverse-path> <CRLF>
       *
       * SMTP CODE SUCCESS: 250
       * SMTP CODE SUCCESS: 552,451,452
       * SMTP CODE SUCCESS: 500,501,502,421
       * @access public
       * @return bool
       */
      function SendOrMail($from) {
        $this->error = null; # so no confusion is caused

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

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

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

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

        if($code != 250) {
          $this->error =
            array("error" => "SOML 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;
          }
          return false;
        }
        return true;
      }

      /**
       * 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
       * @access public
       * @return bool
       */
      function Turn() {
        $this->error = array("error" => "This method, TURN, of the SMTP ".
                                        "is not implemented");
        if($this->do_debug >= 1) {
          echo "SMTP -> NOTICE: " . $this->error["error"] . $this->CRLF;
        }
        return false;
      }

      /**
       * Verifies that the name is recognized by the server.
       * Returns false if the name could not be verified otherwise
       * the response from the server is returned.
       *
       * Implements rfc 821: VRFY <SP> <string> <CRLF>
       *
       * SMTP CODE SUCCESS: 250,251
       * SMTP CODE FAILURE: 550,551,553
       * SMTP CODE ERROR  : 500,501,502,421
       * @access public
       * @return int
       */
      function Verify($name) {
        $this->error = null; # so no confusion is caused

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

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

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

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

        if($code != 250 && $code != 251) {
          $this->error =
            array("error" => "VRFY failed on name '$name'",
                  "smtp_code" => $code,
                  "smtp_msg" => substr($rply,4));
          if($this->do_debug >= 1) {
            echo "SMTP -> ERROR: " . $this->error["error"] .
                     ": " . $rply . $this->CRLF;
          }
          return false;
        }
        return $rply;
      }

      /*****************************************************************
       *                       INTERNAL FUNCTIONS                       *
       ******************************************************************/

      /**
       * Read in as many lines as possible
       * either before eof or socket timeout occurs on the operation.
       * With SMTP we can tell if we have more lines to read if the
       * 4th character is '-' symbol. If it is a space then we don't
       * need to read anything else.
       * @access private
       * @return string
       */
      function get_lines() {
        $data = "";
        while($str = @fgets($this->smtp_conn,515)) {
          if($this->do_debug >= 4) {
            echo "SMTP -> get_lines(): \$data was \"$data\"" .
                     $this->CRLF;
            echo "SMTP -> get_lines(): \$str is \"$str\"" .
                     $this->CRLF;
          }
          $data .= $str;
          if($this->do_debug >= 4) {
            echo "SMTP -> get_lines(): \$data is \"$data\"" . $this->CRLF;
          }
          # if the 4th character is a space then we are done reading
          # so just break the loop
          if(substr($str,3,1) == " ") { break; }
        }
        return $data;
      }

    }

     ?>

Documentation generated on Thu, 02 Apr 2009 21:19:51 -0400 by phpDocumentor 1.3.0RC3