Viewing file: Deliver_SMTP.class.php (12.9 KB) -rw-r--r-- Select action/file-type: (+) | (+) | (+) | Code (+) | Session (+) | (+) | SDB (+) | (+) | (+) | (+) | (+) | (+) |
<?php
/** * Deliver_SMTP.class.php * * SMTP delivery backend for the Deliver class. * * @copyright 1999-2010 The SquirrelMail Project Team * @license http://opensource.org/licenses/gpl-license.php GNU Public License * @version $Id: Deliver_SMTP.class.php 13893 2010-01-25 02:47:41Z pdontthink $ * @package squirrelmail */
/** This of course depends upon Deliver */ require_once(SM_PATH . 'class/deliver/Deliver.class.php');
/** * Deliver messages using SMTP * @package squirrelmail */ class Deliver_SMTP extends Deliver {
function preWriteToStream(&$s) { if ($s) { if ($s{0} == '.') $s = '.' . $s; $s = str_replace("\n.","\n..",$s); } }
function initStream($message, $domain, $length=0, $host='', $port='', $user='', $pass='', $authpop=false, $pop_host='') { global $use_smtp_tls, $smtp_auth_mech;
if ($authpop) { $this->authPop($pop_host, '', $user, $pass); }
$rfc822_header = $message->rfc822_header;
$from = $rfc822_header->from[0]; $to = $rfc822_header->to; $cc = $rfc822_header->cc; $bcc = $rfc822_header->bcc; $content_type = $rfc822_header->content_type;
// MAIL FROM: <from address> MUST be empty in cae of MDN (RFC2298) if ($content_type->type0 == 'multipart' && $content_type->type1 == 'report' && isset($content_type->properties['report-type']) && $content_type->properties['report-type']=='disposition-notification') { // reinitialize the from object because otherwise the from header somehow // is affected. This $from var is used for smtp command MAIL FROM which // is not the same as what we put in the rfc822 header. $from = new AddressStructure(); $from->host = ''; $from->mailbox = ''; }
if (($use_smtp_tls == true) and (check_php_version(4,3)) and (extension_loaded('openssl'))) { $stream = @fsockopen('tls://' . $host, $port, $errorNumber, $errorString); } else { $stream = @fsockopen($host, $port, $errorNumber, $errorString); }
if (!$stream) { $this->dlv_msg = $errorString; $this->dlv_ret_nr = $errorNumber; $this->dlv_server_msg = _("Can't open SMTP stream."); return(0); } $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); }
/* * If $_SERVER['HTTP_HOST'] is set, use that in our HELO to the SMTP * server. This should fix the DNS issues some people have had */ if (sqgetGlobalVar('HTTP_HOST', $HTTP_HOST, SQ_SERVER)) { // HTTP_HOST is set // optionally trim off port number if($p = strrpos($HTTP_HOST, ':')) { $HTTP_HOST = substr($HTTP_HOST, 0, $p); } $helohost = $HTTP_HOST; } else { // For some reason, HTTP_HOST is not set - revert to old behavior $helohost = $domain; }
// if the host is an IPv4 address, enclose it in brackets // if (preg_match('/^\d+\.\d+\.\d+\.\d+$/', $helohost)) $helohost = '[' . $helohost . ']';
/* Lets introduce ourselves */ fputs($stream, "EHLO $helohost\r\n"); $tmp = fgets($stream,1024); if ($this->errorCheck($tmp,$stream)) { // fall back to HELO if EHLO is not supported (error 5xx) if ($this->dlv_ret_nr{0} == '5') { fputs($stream, "HELO $helohost\r\n"); $tmp = fgets($stream,1024); if ($this->errorCheck($tmp,$stream)) { return(0); } } else { return(0); } }
if (( $smtp_auth_mech == 'cram-md5') or ( $smtp_auth_mech == 'digest-md5' )) { // Doing some form of non-plain auth if ($smtp_auth_mech == 'cram-md5') { fputs($stream, "AUTH CRAM-MD5\r\n"); } elseif ($smtp_auth_mech == 'digest-md5') { fputs($stream, "AUTH DIGEST-MD5\r\n"); }
$tmp = fgets($stream,1024);
if ($this->errorCheck($tmp,$stream)) { return(0); }
// At this point, $tmp should hold "334 <challenge string>" $chall = substr($tmp,4); // Depending on mechanism, generate response string if ($smtp_auth_mech == 'cram-md5') { $response = cram_md5_response($user,$pass,$chall); } elseif ($smtp_auth_mech == 'digest-md5') { $response = digest_md5_response($user,$pass,$chall,'smtp',$host); } fputs($stream, $response);
// Let's see what the server had to say about that $tmp = fgets($stream,1024); if ($this->errorCheck($tmp,$stream)) { return(0); }
// CRAM-MD5 is done at this point. If DIGEST-MD5, there's a bit more to go if ($smtp_auth_mech == 'digest-md5') { // $tmp contains rspauth, but I don't store that yet. (No need yet) fputs($stream,"\r\n"); $tmp = fgets($stream,1024);
if ($this->errorCheck($tmp,$stream)) { return(0); } } // CRAM-MD5 and DIGEST-MD5 code ends here } elseif ($smtp_auth_mech == 'none') { // No auth at all, just send helo and then send the mail // We already said hi earlier, nothing more is needed. } elseif ($smtp_auth_mech == 'login') { // The LOGIN method fputs($stream, "AUTH LOGIN\r\n"); $tmp = fgets($stream, 1024);
if ($this->errorCheck($tmp, $stream)) { return(0); } fputs($stream, base64_encode ($user) . "\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); }
fputs($stream, base64_encode($pass) . "\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); } } elseif ($smtp_auth_mech == "plain") { /* SASL Plain */ $auth = base64_encode("$user\0$user\0$pass");
$query = "AUTH PLAIN\r\n"; fputs($stream, $query); $read=fgets($stream, 1024);
if (substr($read,0,3) == '334') { // OK so far.. fputs($stream, "$auth\r\n"); $read = fgets($stream, 1024); }
$results=explode(" ",$read,3); $response=$results[1]; $message=$results[2]; } else { /* Right here, they've reached an unsupported auth mechanism. This is the ugliest hack I've ever done, but it'll do till I can fix things up better tomorrow. So tired... */ if ($this->errorCheck("535 Unable to use this auth type",$stream)) { return(0); } }
/* Ok, who is sending the message? */ $fromaddress = (strlen($from->mailbox) && $from->host) ? $from->mailbox.'@'.$from->host : ''; fputs($stream, 'MAIL FROM:<'.$fromaddress.">\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); }
/* send who the recipients are */ for ($i = 0, $cnt = count($to); $i < $cnt; $i++) { if (!$to[$i]->host) $to[$i]->host = $domain; if (strlen($to[$i]->mailbox)) { fputs($stream, 'RCPT TO:<'.$to[$i]->mailbox.'@'.$to[$i]->host.">\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); } } }
for ($i = 0, $cnt = count($cc); $i < $cnt; $i++) { if (!$cc[$i]->host) $cc[$i]->host = $domain; if (strlen($cc[$i]->mailbox)) { fputs($stream, 'RCPT TO:<'.$cc[$i]->mailbox.'@'.$cc[$i]->host.">\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); } } }
for ($i = 0, $cnt = count($bcc); $i < $cnt; $i++) { if (!$bcc[$i]->host) $bcc[$i]->host = $domain; if (strlen($bcc[$i]->mailbox)) { fputs($stream, 'RCPT TO:<'.$bcc[$i]->mailbox.'@'.$bcc[$i]->host.">\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); } } } /* Lets start sending the actual message */ fputs($stream, "DATA\r\n"); $tmp = fgets($stream, 1024); if ($this->errorCheck($tmp, $stream)) { return(0); } return $stream; }
function finalizeStream($stream) { fputs($stream, "\r\n.\r\n"); /* end the DATA part */ $tmp = fgets($stream, 1024); $this->errorCheck($tmp, $stream); if ($this->dlv_ret_nr != 250) { return(0); } fputs($stream, "QUIT\r\n"); /* log off */ fclose($stream); return true; }
/* check if an SMTP reply is an error and set an error message) */ function errorCheck($line, $smtpConnection) {
$err_num = substr($line, 0, 3); $this->dlv_ret_nr = $err_num; $server_msg = substr($line, 4);
while(substr($line, 0, 4) == ($err_num.'-')) { $line = fgets($smtpConnection, 1024); $server_msg .= substr($line, 4); }
if ( ((int) $err_num{0}) < 4) { return false; }
switch ($err_num) { case '421': $message = _("Service not available, closing channel"); break; case '432': $message = _("A password transition is needed"); break; case '450': $message = _("Requested mail action not taken: mailbox unavailable"); break; case '451': $message = _("Requested action aborted: error in processing"); break; case '452': $message = _("Requested action not taken: insufficient system storage"); break; case '454': $message = _("Temporary authentication failure"); break; case '500': $message = _("Syntax error; command not recognized"); break; case '501': $message = _("Syntax error in parameters or arguments"); break; case '502': $message = _("Command not implemented"); break; case '503': $message = _("Bad sequence of commands"); break; case '504': $message = _("Command parameter not implemented"); break; case '530': $message = _("Authentication required"); break; case '534': $message = _("Authentication mechanism is too weak"); break; case '535': $message = _("Authentication failed"); break; case '538': $message = _("Encryption required for requested authentication mechanism"); break; case '550': $message = _("Requested action not taken: mailbox unavailable"); break; case '551': $message = _("User not local; please try forwarding"); break; case '552': $message = _("Requested mail action aborted: exceeding storage allocation"); break; case '553': $message = _("Requested action not taken: mailbox name not allowed"); break; case '554': $message = _("Transaction failed"); break; default: $message = _("Unknown response"); break; }
$this->dlv_msg = $message; $this->dlv_server_msg = nl2br(htmlspecialchars($server_msg));
return true; }
function authPop($pop_server='', $pop_port='', $user, $pass) { if (!$pop_port) { $pop_port = 110; } if (!$pop_server) { $pop_server = 'localhost'; } $popConnection = @fsockopen($pop_server, $pop_port, $err_no, $err_str); if (!$popConnection) { error_log("Error connecting to POP Server ($pop_server:$pop_port)" . " $err_no : $err_str"); } else { $tmp = fgets($popConnection, 1024); /* banner */ if (substr($tmp, 0, 3) != '+OK') { return(0); } fputs($popConnection, "USER $user\r\n"); $tmp = fgets($popConnection, 1024); if (substr($tmp, 0, 3) != '+OK') { return(0); } fputs($popConnection, 'PASS ' . $pass . "\r\n"); $tmp = fgets($popConnection, 1024); if (substr($tmp, 0, 3) != '+OK') { return(0); } fputs($popConnection, "QUIT\r\n"); /* log off */ fclose($popConnection); } } }
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