functions/smtp.php

   1 <?php
   2
   3 /**
   4  * smtp.php
   5  *
   6  * Copyright (c) 1999-2002 The SquirrelMail Project Team
   7  * Licensed under the GNU GPL. For full terms see the file COPYING.
   8  *
   9  * This contains all the functions needed to send messages through
  10  * an smtp server or sendmail.
  11  *
  12  * $Id$
  13  */
  14
  15 require_once('../functions/addressbook.php');
  16 require_once('../functions/plugin.php');
  17 require_once('../functions/prefs.php');
  18
  19 global $username, $popuser, $domain;
  20
  21 /* This should most probably go to some initialization... */
  22 if (ereg("^([^@%/]+)[@%/](.+)$", $username, $usernamedata)) {
  23     $popuser = $usernamedata[1];
  24     $domain  = $usernamedata[2];
  25     unset($usernamedata);
  26 } else {
  27     $popuser = $username;
  28 }
  29 /* We need domain for smtp */
  30 if (!$domain) {
  31     $domain = getenv('HOSTNAME');
  32 }
  33
  34 /* Returns true only if this message is multipart */
  35 function isMultipart ($session) {
  36     global $attachments;
  37
  38     foreach ($attachments as $info) {
  39         if ($info['session'] == $session) {
  40             return true;
  41         }
  42     }
  43     return false;
  44 }
  45
  46 /* looks up aliases in the addressbook and expands them to
  47  * the full address.
  48  *
  49  * Adds @$domain if it wasn't in the address book and if it
  50  * doesn't have an @ symbol in it
  51  */
  52 function expandAddrs ($array) {
  53     global $domain;
  54
  55     /* don't show errors -- kinda critical that we don't see
  56      * them here since the redirect won't work if we do show them
  57      */
  58     $abook = addressbook_init(false, true);
  59     for ($i=0; $i < count($array); $i++) {
  60         $result = $abook->lookup($array[$i]);
  61         $ret = "";
  62         if (isset($result['email'])) {
  63             if (isset($result['name'])) {
  64                 $ret = '"'.$result['name'].'" ';
  65             }
  66             $ret .= '<'.$result['email'].'>';
  67             $array[$i] = $ret;
  68         }
  69         else
  70         {
  71             if (strpos($array[$i], '@') === false) {
  72                 $array[$i] .= '@' . $domain;
  73             }
  74             $array[$i] = '<' . $array[$i] . '>';
  75         }
  76     }
  77     return $array;
  78 }
  79
  80
  81 /* looks up aliases in the addressbook and expands them to
  82  * the RFC 821 valid RCPT address. ie <user@example.com>
  83  * Adds @$domain if it wasn't in the address book and if it
  84  * doesn't have an @ symbol in it
  85  */
  86 function expandRcptAddrs ($array) {
  87     global $domain;
  88
  89     /* don't show errors -- kinda critical that we don't see
  90      * them here since the redirect won't work if we do show them
  91      */
  92     $abook = addressbook_init(false, true);
  93     for ($i=0; $i < count($array); $i++) {
  94         $result = $abook->lookup($array[$i]);
  95         $ret = "";
  96         if (isset($result['email'])) {
  97             $ret = '<'.$result['email'].'>';
  98             $array[$i] = $ret;
  99         }
 100         else {
 101             if (strpos($array[$i], '@') === false) {
 102                 $array[$i] .= '@' . $domain;
 103             }
 104             $array[$i] = '<' . $array[$i] . '>';
 105         }
 106     }
 107     return $array;
 108 }
 109
 110
 111 /* Attach the files that are due to be attached
 112  */
 113 function attachFiles ($fp, $session, $rn="\r\n") {
 114     global $attachments, $attachment_dir, $username;
 115
 116     $length = 0;
 117
 118     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 119     if (isMultipart($session)) {
 120         foreach ($attachments as $info) {
 121             if ($info['session'] == $session) {
 122                 if (isset($info['type'])) {
 123                     $filetype = $info['type'];
 124                 }
 125                 else {
 126                     $filetype = 'application/octet-stream';
 127                 }
 128
 129                 $header = '--' . mimeBoundary() . "$rn";
 130                 if ( isset($info['remotefilename'])
 131                      && $info['remotefilename'] != '') {
 132                     $header .= "Content-Type: $filetype; name=\"" .
 133                         $info['remotefilename'] . "\"$rn";
 134                     $header .= "Content-Disposition: attachment; filename=\""
 135                         . $info['remotefilename'] . "\"$rn";
 136                 } else {
 137                     $header .= "Content-Type: $filetype$rn";
 138                 }
 139
 140
 141                 /* Use 'rb' for NT systems -- read binary
 142                  * Unix doesn't care -- everything's binary!  :-)
 143                  */
 144
 145                 $filename = $hashed_attachment_dir . '/'
 146                     . $info['localfilename'];
 147                 $file = fopen ($filename, 'rb');
 148                 if (substr($filetype, 0, 5) == 'text/' ||
 149                     substr($filetype, 0, 8) == 'message/' ) {
 150                     $header .= $rn;
 151                                         if ($fp) {
 152                                             fputs ($fp, $header);
 153                                         }
 154                     $length += strlen($header);
 155                     while ($tmp = fgets($file, 4096)) {
 156                         $tmp = str_replace("\r\n", "\n", $tmp);
 157                         $tmp = str_replace("\r", "\n", $tmp);
 158                         if ($rn == "\r\n"){
 159                             $tmp = str_replace("\n", "\r\n", $tmp);
 160                         }
 161                         /**
 162                          * Check if the last line has newline ($rn) in it
 163                          * and append if it doesn't.
 164                          */
 165                         if ($fp && feof($fp) && !strstr($tmp, "$rn")){
 166                             $tmp .= $rn;
 167                         }
 168                         if ($fp) {
 169                             fputs($fp, $tmp);
 170                         }
 171                         $length += strlen($tmp);
 172                     }
 173                 } else {
 174                     $header .= "Content-Transfer-Encoding: base64"
 175                         . "$rn" . "$rn";
 176                     if ($fp) fputs ($fp, $header);
 177                     $length += strlen($header);
 178                     while ($tmp = fread($file, 570)) {
 179                         $encoded = chunk_split(base64_encode($tmp));
 180                         $length += strlen($encoded);
 181                         if ($fp) fputs ($fp, $encoded);
 182                     }
 183                 }
 184                 fclose ($file);
 185             }
 186         }
 187     }
 188     return $length;
 189 }
 190
 191 /* Delete files that are uploaded for attaching
 192  */
 193 function deleteAttachments($session) {
 194     global $username, $attachments, $attachment_dir;
 195     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 196
 197     $rem_attachments = array();
 198     foreach ($attachments as $info) {
 199         if ($info['session'] == $session) {
 200             $attached_file = "$hashed_attachment_dir/$info[localfilename]";
 201             if (file_exists($attached_file)) {
 202                 unlink($attached_file);
 203             }
 204         } else {
 205             $rem_attachments[] = $info;
 206         }
 207     }
 208     $attachments = $rem_attachments;
 209 }
 210
 211 /* Return a nice MIME-boundary
 212  */
 213 function mimeBoundary () {
 214     static $mimeBoundaryString;
 215
 216     if ( !isset( $mimeBoundaryString ) ||
 217          $mimeBoundaryString == '') {
 218         $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
 219             mt_rand( 10000, 99999 );
 220     }
 221
 222     return $mimeBoundaryString;
 223 }
 224
 225 /* Time offset for correct timezone */
 226 function timezone () {
 227     global $invert_time;
 228
 229     $diff_second = date('Z');
 230     if ($invert_time) {
 231         $diff_second = - $diff_second;
 232     }
 233     if ($diff_second > 0) {
 234         $sign = '+';
 235     }
 236     else {
 237         $sign = '-';
 238     }
 239
 240     $diff_second = abs($diff_second);
 241
 242     $diff_hour = floor ($diff_second / 3600);
 243     $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
 244
 245     $zonename = '('.strftime('%Z').')';
 246     $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute,
 247                        $zonename);
 248     return ($result);
 249 }
 250
 251 /* Print all the needed RFC822 headers */
 252 function write822Header ($fp, $t, $c, $b, $subject, $more_headers, $session, $rn="\r\n") {
 253     global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
 254     global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
 255     global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
 256     global $REMOTE_HOST, $identity;
 257
 258     /* Storing the header to make sure the header is the same
 259      * everytime the header is printed.
 260      */
 261     static $header, $headerlength, $headerrn;
 262
 263     if ($header == '') {
 264                 $headerrn = $rn;
 265         $to = expandAddrs(parseAddrs($t));
 266         $cc = expandAddrs(parseAddrs($c));
 267         $bcc = expandAddrs(parseAddrs($b));
 268         if (isset($identity) && $identity != 'default') {
 269             $reply_to = getPref($data_dir, $username, 'reply_to' . $identity);
 270             $from = getPref($data_dir, $username, 'full_name' . $identity);
 271             $from_addr = getFrom();
 272         } else {
 273             $reply_to = getPref($data_dir, $username, 'reply_to');
 274             $from = getPref($data_dir, $username, 'full_name');
 275             $from_addr = getFrom();
 276         }
 277
 278         $to_list = getLineOfAddrs($to);
 279         $cc_list = getLineOfAddrs($cc);
 280         $bcc_list = getLineOfAddrs($bcc);
 281
 282         /* Encoding 8-bit characters and making from line */
 283         $subject = encodeHeader($subject);
 284         if ($from == '') {
 285             $from = "<$from_addr>";
 286         }
 287         else {
 288             $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 289         }
 290
 291         /* This creates an RFC 822 date */
 292         $date = date("D, j M Y H:i:s ", mktime()) . timezone();
 293
 294         /* Create a message-id */
 295         $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
 296         $message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
 297
 298         /* Make an RFC822 Received: line */
 299         if (isset($REMOTE_HOST)) {
 300             $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
 301         }
 302         else {
 303             $received_from = $REMOTE_ADDR;
 304         }
 305
 306         if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
 307             if ($HTTP_X_FORWARDED_FOR == '') {
 308                 $HTTP_X_FORWARDED_FOR = 'unknown';
 309             }
 310             $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
 311         }
 312
 313         $header  = "Received: from $received_from" . $rn;
 314         $header .= "        (SquirrelMail authenticated user $username)" . $rn;
 315         $header .= "        by $SERVER_NAME with HTTP;" . $rn;
 316         $header .= "        $date" . $rn;
 317
 318         /* Insert the rest of the header fields */
 319         $header .= "Message-ID: $message_id" . $rn;
 320         $header .= "Date: $date" . $rn;
 321         $header .= "Subject: $subject" . $rn;
 322         $header .= "From: $from" . $rn;
 323         $header .= "To: $to_list" . $rn;    // Who it's TO
 324
 325         if (isset($more_headers["Content-Type"])) {
 326             $contentType = $more_headers["Content-Type"];
 327             unset($more_headers["Content-Type"]);
 328         }
 329         else {
 330             if (isMultipart($session)) {
 331                 $contentType = "multipart/mixed;";
 332             }
 333             else {
 334                 if ($default_charset != '') {
 335                     $contentType = 'text/plain; charset='.$default_charset;
 336                 }
 337                 else {
 338                     $contentType = 'text/plain;';
 339                 }
 340             }
 341         }
 342
 343         /* Insert headers from the $more_headers array */
 344         if(is_array($more_headers)) {
 345             reset($more_headers);
 346             while(list($h_name, $h_val) = each($more_headers)) {
 347                 if ($h_name == 'References') {
 348                     $h_val = str_replace(' ', "$rn        ", $h_val);
 349                 }
 350                 $header .= sprintf("%s: %s%s", $h_name, $h_val, $rn);
 351             }
 352         }
 353
 354         if ($cc_list) {
 355             $header .= "Cc: $cc_list" . $rn; // Who the CCs are
 356         }
 357
 358         if ($reply_to != '') {
 359             $header .= "Reply-To: $reply_to" . $rn;
 360         }
 361
 362         if ($useSendmail) {
 363             if ($bcc_list) {
 364                 // BCCs is removed from header by sendmail
 365                 $header .= "Bcc: $bcc_list" . $rn;
 366             }
 367         }
 368
 369         /* Identify SquirrelMail */
 370         $header .= "X-Mailer: SquirrelMail (version $version)" . $rn;
 371
 372         /* Do the MIME-stuff */
 373         $header .= "MIME-Version: 1.0" . $rn;
 374
 375         if (isMultipart($session)) {
 376             $header .= 'Content-Type: '.$contentType.' boundary="';
 377             $header .= mimeBoundary();
 378             $header .= "\"$rn";
 379         } else {
 380             $header .= 'Content-Type: ' . $contentType . $rn;
 381             $header .= "Content-Transfer-Encoding: 8bit" . $rn;
 382         }
 383         $header .= $rn; // One blank line to separate header and body
 384
 385         $headerlength = strlen($header);
 386     }
 387
 388         if ($headerrn != $rn) {
 389                 $header = str_replace($headerrn, $rn, $header);
 390         $headerlength = strlen($header);
 391                 $headerrn = $rn;
 392         }
 393
 394     /* Write the header */
 395     if ($fp) fputs ($fp, $header);
 396
 397     return $headerlength;
 398 }
 399
 400 /* Send the body
 401  */
 402 function writeBody ($fp, $passedBody, $session, $rn="\r\n") {
 403     global $default_charset;
 404
 405     $attachmentlength = 0;
 406
 407     if (isMultipart($session)) {
 408         $body = '--'.mimeBoundary() . $rn;
 409
 410         if ($default_charset != "") {
 411             $body .= "Content-Type: text/plain; charset=$default_charset".$rn;
 412         }
 413         else {
 414             $body .= "Content-Type: text/plain" . $rn;
 415         }
 416
 417         $body .= "Content-Transfer-Encoding: 8bit" . $rn . $rn;
 418         $body .= $passedBody . $rn . $rn;
 419         if ($fp) fputs ($fp, $body);
 420
 421         $attachmentlength = attachFiles($fp, $session, $rn);
 422
 423         if (!isset($postbody)) {
 424             $postbody = "";
 425         }
 426         $postbody .= $rn . "--" . mimeBoundary() . "--" . $rn . $rn;
 427         if ($fp) fputs ($fp, $postbody);
 428     } else {
 429         $body = $passedBody . $rn;
 430         if ($fp) fputs ($fp, $body);
 431         $postbody = $rn;
 432         if ($fp) fputs ($fp, $postbody);
 433     }
 434
 435     return (strlen($body) + strlen($postbody) + $attachmentlength);
 436 }
 437
 438 /* Send mail using the sendmail command
 439  */
 440 function sendSendmail($t, $c, $b, $subject, $body, $more_headers, $session) {
 441     global $sendmail_path, $popuser, $username, $domain;
 442
 443     /* Build envelope sender address. Make sure it doesn't contain
 444      * spaces or other "weird" chars that would allow a user to
 445      * exploit the shell/pipe it is used in.
 446      */
 447     $envelopefrom = getFrom();
 448     $envelopefrom = ereg_replace("[[:blank:]]",'', $envelopefrom);
 449     $envelopefrom = ereg_replace("[[:space:]]",'', $envelopefrom);
 450     $envelopefrom = ereg_replace("[[:cntrl:]]",'', $envelopefrom);
 451
 452     /**
 453      * open pipe to sendmail or qmail-inject
 454      * (qmail-inject doesn't accept -t param)
 455      */
 456     if (strstr($sendmail_path, "qmail-inject")) {
 457         $fp = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
 458     } else {
 459         $fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
 460     }
 461
 462     $headerlength = write822Header ($fp, $t, $c, $b, $subject,
 463                                     $more_headers, $session, "\n");
 464     $bodylength = writeBody($fp, $body, $session, "\n");
 465
 466     pclose($fp);
 467
 468     return ($headerlength + $bodylength);
 469 }
 470
 471 function smtpReadData($smtpConnection) {
 472     $read = fgets($smtpConnection, 1024);
 473     $counter = 0;
 474     while ($read) {
 475         echo $read . '<BR>';
 476         $data[$counter] = $read;
 477         $read = fgets($smtpConnection, 1024);
 478         $counter++;
 479     }
 480 }
 481
 482 function sendSMTP($t, $c, $b, $subject, $body, $more_headers, $session) {
 483     global $username, $popuser, $domain, $version, $smtpServerAddress,
 484         $smtpPort, $data_dir, $color, $use_authenticated_smtp, $identity,
 485         $key, $onetimepad;
 486
 487     $to = expandRcptAddrs(parseAddrs($t));
 488     $cc = expandRcptAddrs(parseAddrs($c));
 489     $bcc = expandRcptAddrs(parseAddrs($b));
 490     if (isset($identity) && $identity != 'default') {
 491         $from_addr = getPref($data_dir, $username,
 492                              'email_address' . $identity);
 493     }
 494     else {
 495         $from_addr = getPref($data_dir, $username, 'email_address');
 496     }
 497
 498     if (!$from_addr) {
 499         $from_addr = "$popuser@$domain";
 500     }
 501
 502     /* POP3 BEFORE SMTP CODE HERE */
 503     global $pop_before_smtp;
 504     if (isset($pop_before_smtp) && $pop_before_smtp === true) {
 505         if (!isset($pop_port)) {
 506             $pop_port = 110;
 507         }
 508         if (!isset($pop_server)) {
 509             $pop_server = $smtpServerAddress; /* usually the same host! */
 510         }
 511         $popConnection = fsockopen($pop_server, $pop_port, $err_no, $err_str);
 512         if (!$popConnection) {
 513             error_log("Error connecting to POP Server ($pop_server:$pop_port)"
 514                   . " $err_no : $err_str");
 515         } else {
 516             $tmp = fgets($popConnection, 1024); /* banner */
 517             if (!eregi("^\+OK", $tmp, $regs)) {
 518                 return(0);
 519             }
 520             fputs($popConnection, "USER $username\r\n");
 521             $tmp = fgets($popConnection, 1024);
 522             if (!eregi("^\+OK", $tmp, $regs)) {
 523                 return(0);
 524             }
 525             fputs($popConnection, 'PASS ' . OneTimePadDecrypt($key, $onetimepad) . "\r\n");
 526             $tmp = fgets($popConnection, 1024);
 527             if (!eregi("^\+OK", $tmp, $regs)) {
 528                 return(0);
 529             }
 530             fputs($popConnection, "QUIT\r\n"); /* log off */
 531             fclose($popConnection);
 532         }
 533     }
 534
 535     $smtpConnection = fsockopen($smtpServerAddress, $smtpPort,
 536                                 $errorNumber, $errorString);
 537     if (!$smtpConnection) {
 538         echo 'Error connecting to SMTP Server.<br>';
 539         echo "$errorNumber : $errorString<br>";
 540         exit;
 541     }
 542     $tmp = fgets($smtpConnection, 1024);
 543     if (errorCheck($tmp, $smtpConnection)!=5) {
 544         return(0);
 545     }
 546
 547     $to_list = getLineOfAddrs($to);
 548     $cc_list = getLineOfAddrs($cc);
 549
 550     /* Lets introduce ourselves */
 551     if (! isset ($use_authenticated_smtp)
 552         || $use_authenticated_smtp == false) {
 553         fputs($smtpConnection, "HELO $domain\r\n");
 554         $tmp = fgets($smtpConnection, 1024);
 555         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 556     } else {
 557         fputs($smtpConnection, "EHLO $domain\r\n");
 558         $tmp = fgets($smtpConnection, 1024);
 559         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 560
 561         fputs($smtpConnection, "AUTH LOGIN\r\n");
 562         $tmp = fgets($smtpConnection, 1024);
 563         if (errorCheck($tmp, $smtpConnection)!=5) {
 564             return(0);
 565         }
 566
 567         fputs($smtpConnection, base64_encode ($username) . "\r\n");
 568         $tmp = fgets($smtpConnection, 1024);
 569         if (errorCheck($tmp, $smtpConnection)!=5) {
 570             return(0);
 571         }
 572
 573         fputs($smtpConnection, base64_encode
 574               (OneTimePadDecrypt($key, $onetimepad)) . "\r\n");
 575         $tmp = fgets($smtpConnection, 1024);
 576         if (errorCheck($tmp, $smtpConnection)!=5) {
 577             return(0);
 578         }
 579     }
 580
 581     /* Ok, who is sending the message? */
 582     fputs($smtpConnection, "MAIL FROM: <$from_addr>\r\n");
 583     $tmp = fgets($smtpConnection, 1024);
 584     if (errorCheck($tmp, $smtpConnection)!=5) {
 585         return(0);
 586     }
 587
 588     /* send who the recipients are */
 589     for ($i = 0; $i < count($to); $i++) {
 590         fputs($smtpConnection, "RCPT TO: $to[$i]\r\n");
 591         $tmp = fgets($smtpConnection, 1024);
 592         if (errorCheck($tmp, $smtpConnection)!=5) {
 593             return(0);
 594         }
 595     }
 596     for ($i = 0; $i < count($cc); $i++) {
 597         fputs($smtpConnection, "RCPT TO: $cc[$i]\r\n");
 598         $tmp = fgets($smtpConnection, 1024);
 599         if (errorCheck($tmp, $smtpConnection)!=5) {
 600             return(0);
 601         }
 602     }
 603     for ($i = 0; $i < count($bcc); $i++) {
 604         fputs($smtpConnection, "RCPT TO: $bcc[$i]\r\n");
 605         $tmp = fgets($smtpConnection, 1024);
 606         if (errorCheck($tmp, $smtpConnection)!=5) {
 607             return(0);
 608         }
 609     }
 610
 611     /* Lets start sending the actual message */
 612     fputs($smtpConnection, "DATA\r\n");
 613     $tmp = fgets($smtpConnection, 1024);
 614     if (errorCheck($tmp, $smtpConnection)!=5) {
 615         return(0);
 616     }
 617
 618     /* Send the message */
 619     $headerlength = write822Header ($smtpConnection, $t, $c, $b,
 620                                     $subject, $more_headers, $session);
 621     $bodylength = writeBody($smtpConnection, $body, $session);
 622
 623     fputs($smtpConnection, ".\r\n"); /* end the DATA part */
 624     $tmp = fgets($smtpConnection, 1024);
 625     $num = errorCheck($tmp, $smtpConnection, true);
 626     if ($num != 250) {
 627         return(0);
 628     }
 629
 630     fputs($smtpConnection, "QUIT\r\n"); /* log off */
 631
 632     fclose($smtpConnection);
 633
 634     return ($headerlength + $bodylength);
 635 }
 636
 637
 638 function errorCheck($line, $smtpConnection, $verbose = false) {
 639     global $color, $compose_new_win;
 640
 641     /* Read new lines on a multiline response */
 642     $lines = $line;
 643     while(ereg("^[0-9]+-", $line)) {
 644         $line = fgets($smtpConnection, 1024);
 645         $lines .= $line;
 646     }
 647
 648     /* Status:  0 = fatal
 649      *          5 = ok
 650      */
 651     $err_num = substr($line, 0, strpos($line, " "));
 652     switch ($err_num) {
 653     case 500:   $message = 'Syntax error; command not recognized';
 654         $status = 0;
 655         break;
 656     case 501:   $message = 'Syntax error in parameters or arguments';
 657         $status = 0;
 658         break;
 659     case 502:   $message = 'Command not implemented';
 660         $status = 0;
 661         break;
 662     case 503:   $message = 'Bad sequence of commands';
 663         $status = 0;
 664         break;
 665     case 504:   $message = 'Command parameter not implemented';
 666         $status = 0;
 667         break;
 668
 669     case 211:   $message = 'System status, or system help reply';
 670         $status = 5;
 671         break;
 672     case 214:   $message = 'Help message';
 673         $status = 5;
 674         break;
 675
 676     case 220:   $message = 'Service ready';
 677         $status = 5;
 678         break;
 679     case 221:   $message = 'Service closing transmission channel';
 680         $status = 5;
 681         break;
 682
 683     case 421:   $message = 'Service not available, closing chanel';
 684         $status = 0;
 685         break;
 686
 687     case 235:   return(5);
 688         break;
 689     case 250:   $message = 'Requested mail action okay, completed';
 690         $status = 5;
 691         break;
 692     case 251:   $message = 'User not local; will forward';
 693         $status = 5;
 694         break;
 695     case 334:   return(5); break;
 696     case 450:   $message = 'Requested mail action not taken:  mailbox unavailable';
 697         $status = 0;
 698         break;
 699     case 550:   $message = 'Requested action not taken:  mailbox unavailable';
 700         $status = 0;
 701         break;
 702     case 451:   $message = 'Requested action aborted:  error in processing';
 703         $status = 0;
 704         break;
 705     case 551:   $message = 'User not local; please try forwarding';
 706         $status = 0;
 707         break;
 708     case 452:   $message = 'Requested action not taken:  insufficient system storage';
 709         $status = 0;
 710         break;
 711     case 552:   $message = 'Requested mail action aborted:  exceeding storage allocation';
 712         $status = 0;
 713         break;
 714     case 553:   $message = 'Requested action not taken: mailbox name not allowed';
 715         $status = 0;
 716         break;
 717     case 354:   $message = 'Start mail input; end with .';
 718         $status = 5;
 719         break;
 720     case 554:   $message = 'Transaction failed';
 721         $status = 0;
 722         break;
 723     default:    $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
 724         $status = 0;
 725         $error_num = '001';
 726         break;
 727     }
 728
 729     if ($status == 0) {
 730         include_once('../functions/page_header.php');
 731         if ($compose_new_win == '1') {
 732             compose_Header($color, 'None');
 733         }
 734         else {
 735             displayPageHeader($color, 'None');
 736         }
 737         include_once('../functions/display_messages.php');
 738         $lines = nl2br(htmlspecialchars($lines));
 739         $msg  = $message . "<br>\nServer replied: $lines";
 740         plain_error_message($msg, $color);
 741     }
 742     if (! $verbose) return $status;
 743     return $err_num;
 744 }
 745
 746 /* create new reference header per rfc2822 */
 747
 748 function calculate_references($refs, $inreplyto, $old_reply_to) {
 749
 750     $refer = "";
 751     for ($i=1;$i<count($refs[0]);$i++) {
 752         if (!empty($refs[0][$i])) {
 753             if (preg_match("/^References:(.+)$/", $refs[0][$i], $regs)) {
 754                 $refer = trim($regs[1]);
 755             }
 756             else {
 757                 $refer .= ' ' . trim($refs[0][$i]);
 758             }
 759         }
 760     }
 761     $refer = trim($refer);
 762     if (strlen($refer) > 2) {
 763         $refer .= ' ' . $inreplyto;
 764     }
 765     else {
 766         if (!empty($old_reply_to)) {
 767             $refer .= $old_reply_to . ' ' . $inreplyto;
 768         }
 769         else {
 770             $refer .= $inreplyto;
 771         }
 772     }
 773     trim($refer);
 774     return $refer;
 775 }
 776
 777 function sendMessage($t, $c, $b, $subject, $body, $reply_id, $MDN,
 778                      $prio = 3, $session) {
 779     global $useSendmail, $msg_id, $is_reply, $mailbox, $onetimepad,
 780         $data_dir, $username, $domain, $key, $version, $sent_folder,
 781         $imapServerAddress, $imapPort, $default_use_priority, $more_headers,
 782         $request_mdn, $request_dr;
 783
 784     $more_headers = Array();
 785
 786     do_hook('smtp_send');
 787
 788     $imap_stream = sqimap_login($username, $key, $imapServerAddress,
 789                                 $imapPort, 1);
 790
 791     if (isset($reply_id) && $reply_id) {
 792         sqimap_mailbox_select ($imap_stream, $mailbox);
 793         sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, 'Answered');
 794
 795         /* Insert In-Reply-To and References headers if the
 796          * message-id of the message we reply to is set (longer than "<>")
 797          * The References header should really be the old Referenced header
 798          * with the message ID appended, and now it is (jmunro)
 799          */
 800         $sid = sqimap_session_id();
 801         $query = "$sid FETCH $reply_id (BODY.PEEK[HEADER.FIELDS (Message-Id In-Reply-To)])\r\n";
 802         fputs ($imap_stream, $query);
 803         $read = sqimap_read_data($imap_stream, $sid, true, $response, $message);
 804         $message_id = '';
 805         $in_reply_to = '';
 806
 807         foreach ($read as $r) {
 808                 if (preg_match("/^message-id:(.*)/iA", $r, $regs)) {
 809                     $message_id = trim($regs[1]);
 810                 }
 811                 if (preg_match("/^in-reply-to:(.*)/iA", $r, $regs)) {
 812                     $in_reply_to = trim($regs[1]);
 813                 }
 814         }
 815
 816         if(strlen($message_id) > 2) {
 817             $refs = get_reference_header ($imap_stream, $reply_id);
 818             $inreplyto = $message_id;
 819             $old_reply_to = $in_reply_to;
 820             $refer = calculate_references ($refs, $inreplyto, $old_reply_to);
 821             $more_headers['In-Reply-To'] = $inreplyto;
 822             $more_headers['References']  = $refer;
 823         }
 824
 825     }
 826     if ($default_use_priority) {
 827         $more_headers = array_merge($more_headers, createPriorityHeaders($prio));
 828     }
 829
 830     $requestRecipt = 0;
 831     if (isset($request_dr)) {
 832         $requestRecipt += 1;
 833     }
 834     if (isset($request_mdn)) {
 835         $requestRecipt += 2;
 836     }
 837     if ( $requestRecipt > 0) {
 838         $more_headers = array_merge($more_headers, createReceiptHeaders($requestRecipt));
 839     }
 840
 841     /* In order to remove the problem of users not able to create
 842      * messages with "." on a blank line, RFC821 has made provision
 843      * in section 4.5.2 (Transparency).
 844      */
 845     $body = ereg_replace("\n\\.", "\n..", $body);
 846     $body = ereg_replace("^\\.", "..", $body);
 847
 848     /* this is to catch all plain \n instances and
 849      * replace them with \r\n.  All newlines were converted
 850      * into just \n inside the compose.php file.
 851      * But only if delimiter is, in fact, \r\n.
 852      */
 853
 854     if ($MDN) {
 855         $more_headers["Content-Type"] = "multipart/report; ".
 856             "report-type=disposition-notification;";
 857     }
 858
 859     if ($useSendmail) {
 860         $length = sendSendmail($t, $c, $b, $subject, $body, $more_headers,
 861                                $session);
 862         $body = ereg_replace("\n", "\r\n", $body);
 863     } else {
 864         $body = ereg_replace("\n", "\r\n", $body);
 865         $length = sendSMTP($t, $c, $b, $subject, $body, $more_headers,
 866                            $session);
 867     }
 868     if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
 869                 $headerlength = write822Header (FALSE, $t, $c, $b, $subject, $more_headers, $session, "\r\n");
 870                 $bodylength = writeBody(FALSE, $body, $session, "\r\n");
 871                 $length = $headerlength + $bodylength;
 872
 873         sqimap_append ($imap_stream, $sent_folder, $length);
 874         write822Header ($imap_stream, $t, $c, $b, $subject, $more_headers,
 875                         $session);
 876         writeBody ($imap_stream, $body, $session);
 877         sqimap_append_done ($imap_stream);
 878     }
 879     sqimap_logout($imap_stream);
 880     /* Delete the files uploaded for attaching (if any).
 881      * only if $length != 0 (if there was no error)
 882      */
 883     if ($length) {
 884         ClearAttachments($session);
 885     }
 886
 887     return $length;
 888 }
 889
 890 function createPriorityHeaders($prio) {
 891     $prio_headers = Array();
 892     $prio_headers['X-Priority'] = $prio;
 893
 894     switch($prio) {
 895     case 1: $prio_headers['Importance'] = 'High';
 896         $prio_headers['X-MSMail-Priority'] = 'High';
 897         break;
 898
 899     case 3: $prio_headers['Importance'] = 'Normal';
 900         $prio_headers['X-MSMail-Priority'] = 'Normal';
 901         break;
 902
 903     case 5:
 904         $prio_headers['Importance'] = 'Low';
 905         $prio_headers['X-MSMail-Priority'] = 'Low';
 906         break;
 907     }
 908     return  $prio_headers;
 909 }
 910
 911 function createReceiptHeaders($receipt) {
 912
 913     GLOBAL $data_dir, $username, $identity, $popuser, $domain;
 914
 915     $receipt_headers = Array();
 916     if (isset($identity) && $identity != 'default') {
 917         $from = getPref($data_dir, $username, 'full_name' . $identity);
 918         $from_addr = getPref($data_dir, $username, 'email_address' . $identity);
 919     } else {
 920         $from = getPref($data_dir, $username, 'full_name');
 921         $from_addr = getPref($data_dir, $username, 'email_address');
 922     }
 923     if ($from_addr == '') {
 924         $from_addr = $popuser.'@'.$domain;
 925     }
 926
 927     if ($from == '') {
 928         $from = "<$from_addr>";
 929     }
 930     else {
 931         $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 932     }
 933
 934     /* On Delivery */
 935     if ( $receipt == 1
 936         || $receipt == 3 ) {
 937         $receipt_headers["Return-Receipt-To"] = $from;
 938     }
 939     /* On Read */
 940     if ($receipt == 2
 941         || $receipt == 3 ) {
 942         /* Pegasus Mail */
 943         $receipt_headers["X-Confirm-Reading-To"] = $from;
 944         /* RFC 2298 */
 945         $receipt_headers["Disposition-Notification-To"] = $from;
 946     }
 947     return $receipt_headers;
 948 }
 949
 950 /* Figure out what the 'From:' address is
 951  */
 952
 953 function getFrom() {
 954     global $username, $popuser, $domain, $data_dir, $identity;
 955     if (isset($identity) && $identity != 'default') {
 956         $from_addr = getPref($data_dir, $username,
 957                              'email_address' . $identity);
 958     }
 959     else {
 960         $from_addr = getPref($data_dir, $username, 'email_address');
 961     }
 962
 963     if (!$from_addr) {
 964         $from_addr = "$popuser@$domain";
 965     }
 966     return $from_addr;
 967 }
 968
 969
 970 ?>