Smtp.php:
<?php
/*
* $Id: smtp.php, v 1.2 2005/05/23 19:49:26 stephen.kitching Exp $
*
* Description: 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.
*
* Creator: Chris Ryan <xgbe <at> yahoo <dot> com>
* Created: 03/26/2001
*
* TODO:
* - Move all the duplicate code to a utility function
* Most of the functions have the first lines of
* code do the same processing. If this can be moved
* into a utility function then it would reduce the
* overall size of the code significantly.
*
* 08/22/2001 - Chris Ryan <xgbe <at> yahoo <dot> com>
* Added the Authenticate() method submitted by Brent Matzelle
* in response to the feature request #298.
*/
/*
* PhpSMTP library for using the SMTP protocol from PHP
* Copyright (C) 2001-2003 Chris Ryan
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* STMP 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.
*/
class SMTP {
var $SMTP_PORT = 25; # the default SMTP PORT
var $CRLF = "\r\n"; # CRLF pair
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
var $do_debug; # the level of debug to perform
/*
* SMTP()
*
* Initialize the class so that the data is in a known state.
*/
function SMTP() {
$this->smtp_conn = 0;
$this->error = null;
$this->helo_rply = null;
$this->do_debug = 0;
}
/************************************************************
* CONNECTION FUNCTIONS *
***********************************************************/
/*
* Connect($host, $port=0, $tval=30)
*
* Connect to the server specified on the port specified.
* If the port is not specified use the default SMTP_PORT.
* If tval is specified then a connection will try and be
* established with the server for that number of seconds.
* If tval is not specified the default is 30 seconds to
* try on the connection.
*
* SMTP CODE SUCCESS: 220
* SMTP CODE FAILURE: 421
*/
function Connect($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)" . $this->CRLF;
}
return false;
}
# sometimes the SMTP server takes a little longer to respond
# so we will give it a longer timeout for the first read
# I have a report that on Windows systems this doesn't
# behave properly.
#socket_set_timeout($this->smtp_conn, 1, 0);
# get any announcement stuff
$announce = $this->get_lines();
# set the timeout of any socket functions at 1/10 of a second
#socket_set_timeout($this->smtp_conn, 0, 100000);
if($this->do_debug >= 2) {
echo "SMTP -> FROM SERVER:" . $this->CRLF . $announce;
}
return true;
}
/*
* Connected()
*
* Returns true if connected to a server otherwise false
*/
function Connected() {
if(!empty($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;
}
/*
* 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.
*/
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);
$this->smtp_conn = 0;
}
}
/**************************************************************
* SMTP COMMANDS *
*************************************************************/
/*
* Data($msg_data)
*
* Issues a data command and sends the msg_data to the server
* finializing the mail transaction. $msg_data is the message
* that is to be send with the headers. Each header needs to be
* on a single line followed by a <CRLF> with the message headers
* and the message body being seperated by and additional <CRLF>.
*
* Implements rfc 821: DATA <CRLF>
*
* SMTP CODE INTERMEDIATE: 354
* [data]
* <CRLF>.<CRLF>
* SMTP CODE SUCCESS: 250
* SMTP CODE FAILURE: 552, 554, 451, 452
* SMTP CODE FAILURE: 451, 554
* SMTP CODE ERROR : 500, 501, 503, 421
*/
function Data($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 = 980; # 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, $max_line_length), " ");
if($pos === false) {
$pos = $max_line_length;
}
$lines_out[] = substr($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(!empty($line_out) && $line_out[0] == ".") {
$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 . $this->CRLF;
}
return false;
}
return true;
}
/*
* Expand($name)
*
* 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
*/
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 $rval;
}
/*
* Hello($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
*/
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
$host = "localhost";
}
fputs($this->smtp_conn, "HELO " . $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" => "HELO 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 = $rply;
return true;
}
/*
* Help($keyword="")
*
* 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 $this->error set appropiately.
*
* Implements rfc 821: HELP [ <SP> <string> ] <CRLF>
*
* SMTP CODE SUCCESS: 211, 214
* SMTP CODE ERROR : 500, 501, 502, 504, 421
*/
function Help($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 $rply;
}
/*
* Mail($from)
*
* Starts a mail transaction from the email address specified in
* $from. Returns true if successful or false otherwise. If True
* the mail transaction is started and then one or more Recipient
* commands may be called followed by a Data command.
*
* Implements rfc 821: MAIL <SP> FROM:<reverse-path> <CRLF>
*
* SMTP CODE SUCCESS: 250
* SMTP CODE SUCCESS: 552, 451, 452
* SMTP CODE SUCCESS: 500, 501, 421
*/
function Mail($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;
}
/*
* Noop()
*
* Sends the command NOOP to the SMTP server.
*
* Implements from rfc 821: NOOP <CRLF>
*
* SMTP CODE SUCCESS: 250
* SMTP CODE ERROR : 500, 421
*/
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 . $this->CRLF;
}
return false;
}
return true;
}
/*
* Quit($close_on_error=true)
*
* Sends the quit command to the server and then closes the socket
* if there is no error or the $close_on_error argument is true.
*
* Implements from rfc 821: QUIT <CRLF>
*
* SMTP CODE SUCCESS: 221
* SMTP CODE ERROR : 500
*/
function Quit($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 $rval;
}
/*
* Recipient($to)
*
* Sends the command RCPT to the SMTP server with the TO: argument of $to.
* Returns true if the recipient was accepted false if it was rejected.
*
* Implements from rfc 821: RCPT <SP> TO:<forward-path> <CRLF>
*
* SMTP CODE SUCCESS: 250, 251
* SMTP CODE FAILURE: 550, 551, 552, 553, 450, 451, 452
* SMTP CODE ERROR : 500, 501, 503, 421
*/
function Recipient($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;
}
/*
* 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
*/
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 . $this->CRLF;
}
return false;
}
return true;
}
/*
* Send($from)
*
* Starts a mail transaction from the email address specified in
* $from. Returns true if successful or false otherwise. If True
* the mail transaction is started and then one or more Recipient
* commands may be called followed by a Data command. This command
* will send the message to the users terminal if they are logged
* in.
*
* Implements rfc 821: SEND <SP> FROM:<reverse-path> <CRLF>
*
* SMTP CODE SUCCESS: 250
* SMTP CODE SUCCESS: 552, 451, 452
* SMTP CODE SUCCESS: 500, 501, 502, 421
*/
function Send($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 . $this->CRLF;
}
return false;
}
return true;
}
/*
* SendAndMail($from)
*
* Starts a mail transaction from the email address specified in
* $from. Returns true if successful or false otherwise. If True
* the mail transaction is started and then one or more Recipient
* commands may be called followed by a Data command. This command
* will send the message to the users terminal if they are logged
* in and send them an email.
*
* Implements rfc 821: SAML <SP> FROM:<reverse-path> <CRLF>
*
* SMTP CODE SUCCESS: 250
* SMTP CODE SUCCESS: 552, 451, 452
* SMTP CODE SUCCESS: 500, 501, 502, 421
*/
function SendAndMail($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 . $this->CRLF;
}
return false;
}
return true;
}
/*
* SendOrMail($from)
*
* Starts a mail transaction from the email address specified in
* $from. Returns true if successful or false otherwise. If True
* the mail transaction is started and then one or more Recipient
* commands may be called followed by a Data command. This command
* will send the message to the users terminal if they are logged
* in or mail it to them if they are not.
*
* Implements rfc 821: SOML <SP> FROM:<reverse-path> <CRLF>
*
* SMTP CODE SUCCESS: 250
* SMTP CODE SUCCESS: 552, 451, 452
* SMTP CODE SUCCESS: 500, 501, 502, 421
*/
function SendOrMail($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;
}
/*
* 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
*/
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"] . $this->CRLF;
}
return false;
}
/*
* Verify($name)
*
* 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
*/
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 *
******************************************************************/
/*
* get_lines()
*
* __internal_use_only__: 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.
*/
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 $data;
}
/******************************************************************
* EXTENDED FUNCTIONALITY *
******************************************************************/
/*
* Authenticate()
*
* Performs SMTP authentication. Must be run after running the
* Hello() method. Returns true if successfully authenticated.
*
* Submitted by: "Brent R. Matzelle" <matzelle <at> activestrategy <dot> com>
*/
function Authenticate($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;
}
}
?>
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