X-Git-Url: https://scripts.mit.edu/gitweb/autoinstalls/wordpress.git/blobdiff_plain/022dfbbbe3215917d84708eb09acca93b21ae9e0..7688c6ba71852cd89123b62b2d57683535e4702a:/wp-includes/class-smtp.php

diff --git a/wp-includes/class-smtp.php b/wp-includes/class-smtp.php
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+<?php
+////////////////////////////////////////////////////
+// SMTP - PHP SMTP class
+//
+// Version 1.02
+//
+// Define an SMTP class that can be used to connect
+// and communicate with any SMTP server. It implements
+// all the SMTP functions defined in RFC821 except TURN.
+//
+// Author: Chris Ryan
+//
+// License: LGPL, see LICENSE
+////////////////////////////////////////////////////
+
+/**
+ * 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
+
+    /**#@+
+     * @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($sock_status["eof"]) {
+                # hmm this is an odd situation... the socket is
+                # valid but we aren't connected anymore
+                if($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'm 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()) {
+            $this->error = array(
+                    "error" => "Called Hello() without being connected");
+            return false;
+        }
+
+        # if a hostname for the HELO wasn't specified determine
+        # a suitable one to send
+        if(empty($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()) {
+            $this->error = array(
+                    "error" => "Called Mail() without being connected");
+            return false;
+        }
+
+        fputs($this->smtp_conn,"MAIL 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" => "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;
+    }
+
+}
+
+
+ ?>