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) {
 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             $header = '--' . mimeBoundary() . "\r\n";
 130             if ( isset($info['remotefilename']) && $info['remotefilename'] != '') {
 131                 $header .= "Content-Type: $filetype; name=\"" .
 132                     $info['remotefilename'] . "\"\r\n";
 133                 $header .= "Content-Disposition: attachment; filename=\"" .
 134                     $info['remotefilename'] . "\"\r\n";
 135             } else {
 136                 $header .= "Content-Type: $filetype;\r\n";
 137             }
 138
 139
 140             /* Use 'rb' for NT systems -- read binary
 141              * Unix doesn't care -- everything's binary!  :-)
 142              */
 143
 144             $filename = $hashed_attachment_dir . '/' . $info['localfilename'];
 145             $file = fopen ($filename, 'rb');
 146             if (substr($filetype, 0, 5) == 'text/' ||
 147                 substr($filetype, 0, 8) == 'message/' ) {
 148                 $header .= "\r\n";
 149                 fputs ($fp, $header);
 150                 $length += strlen($header);
 151                 while ($tmp = fgets($file, 4096)) {
 152                     $tmp = str_replace("\r\n", "\n", $tmp);
 153                     $tmp = str_replace("\r", "\n", $tmp);
 154                     $tmp = str_replace("\n", "\r\n", $tmp);
 155                     if (feof($fp) && substr($tmp, -2) != "\r\n") {
 156                         $tmp .= "\r\n";
 157                     }
 158                     fputs($fp, $tmp);
 159                     $length += strlen($tmp);
 160                 }
 161             } else {
 162                 $header .= "Content-Transfer-Encoding: base64\r\n\r\n";
 163                 fputs ($fp, $header);
 164                 $length += strlen($header);
 165                 while ($tmp = fread($file, 570)) {
 166                     $encoded = chunk_split(base64_encode($tmp));
 167                     $length += strlen($encoded);
 168                     fputs ($fp, $encoded);
 169                 }
 170             }
 171             fclose ($file);
 172           }
 173         }
 174     }
 175     return $length;
 176 }
 177
 178 /* Delete files that are uploaded for attaching
 179  */
 180 function deleteAttachments($session) {
 181     global $username, $attachments, $attachment_dir;
 182     $hashed_attachment_dir = getHashedDir($username, $attachment_dir);
 183
 184     $rem_attachments = array();
 185     foreach ($attachments as $info) {
 186         if ($info['session'] == $session) {
 187             $attached_file = "$hashed_attachment_dir/$info[localfilename]";
 188             if (file_exists($attached_file)) {
 189                 unlink($attached_file);
 190             }
 191         } else {
 192             $rem_attachments[] = $info;
 193         }
 194     }
 195     $attachments = $rem_attachments;
 196 }
 197
 198 /* Return a nice MIME-boundary
 199  */
 200 function mimeBoundary () {
 201     static $mimeBoundaryString;
 202
 203     if ( !isset( $mimeBoundaryString ) ||
 204          $mimeBoundaryString == '') {
 205         $mimeBoundaryString = '----=_' . date( 'YmdHis' ) . '_' .
 206                               mt_rand( 10000, 99999 );
 207     }
 208
 209     return $mimeBoundaryString;
 210 }
 211
 212 /* Time offset for correct timezone */
 213 function timezone () {
 214     global $invert_time;
 215
 216     $diff_second = date('Z');
 217     if ($invert_time) {
 218         $diff_second = - $diff_second;
 219     }
 220     if ($diff_second > 0) {
 221         $sign = '+';
 222     }
 223     else {
 224         $sign = '-';
 225     }
 226
 227     $diff_second = abs($diff_second);
 228
 229     $diff_hour = floor ($diff_second / 3600);
 230     $diff_minute = floor (($diff_second-3600*$diff_hour) / 60);
 231
 232     $zonename = '('.strftime('%Z').')';
 233     $result = sprintf ("%s%02d%02d %s", $sign, $diff_hour, $diff_minute, $zonename);
 234     return ($result);
 235 }
 236
 237 /* Print all the needed RFC822 headers */
 238 function write822Header ($fp, $t, $c, $b, $subject, $more_headers, $session) {
 239     global $REMOTE_ADDR, $SERVER_NAME, $REMOTE_PORT;
 240     global $data_dir, $username, $popuser, $domain, $version, $useSendmail;
 241     global $default_charset, $HTTP_VIA, $HTTP_X_FORWARDED_FOR;
 242     global $REMOTE_HOST, $identity;
 243
 244     /* Storing the header to make sure the header is the same
 245      * everytime the header is printed.
 246      */
 247     static $header, $headerlength;
 248
 249     if ($header == '') {
 250         $to = expandAddrs(parseAddrs($t));
 251         $cc = expandAddrs(parseAddrs($c));
 252         $bcc = expandAddrs(parseAddrs($b));
 253         if (isset($identity) && $identity != 'default') {
 254             $reply_to = getPref($data_dir, $username, 'reply_to' . $identity);
 255             $from = getPref($data_dir, $username, 'full_name' . $identity);
 256             $from_addr = getPref($data_dir, $username, 'email_address' . $identity);
 257         } else {
 258             $reply_to = getPref($data_dir, $username, 'reply_to');
 259             $from = getPref($data_dir, $username, 'full_name');
 260             $from_addr = getPref($data_dir, $username, 'email_address');
 261         }
 262
 263         if ($from_addr == '') {
 264             $from_addr = $popuser.'@'.$domain;
 265         }
 266
 267         $to_list = getLineOfAddrs($to);
 268         $cc_list = getLineOfAddrs($cc);
 269         $bcc_list = getLineOfAddrs($bcc);
 270
 271         /* Encoding 8-bit characters and making from line */
 272         $subject = encodeHeader($subject);
 273         if ($from == '') {
 274             $from = "<$from_addr>";
 275         }
 276         else {
 277             $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 278         }
 279
 280         /* This creates an RFC 822 date */
 281         $date = date("D, j M Y H:i:s ", mktime()) . timezone();
 282
 283         /* Create a message-id */
 284         $message_id = '<' . $REMOTE_PORT . '.' . $REMOTE_ADDR . '.';
 285         $message_id .= time() . '.squirrel@' . $SERVER_NAME .'>';
 286
 287         /* Make an RFC822 Received: line */
 288         if (isset($REMOTE_HOST)) {
 289             $received_from = "$REMOTE_HOST ([$REMOTE_ADDR])";
 290         }
 291         else {
 292             $received_from = $REMOTE_ADDR;
 293         }
 294
 295         if (isset($HTTP_VIA) || isset ($HTTP_X_FORWARDED_FOR)) {
 296             if ($HTTP_X_FORWARDED_FOR == '') {
 297                 $HTTP_X_FORWARDED_FOR = 'unknown';
 298             }
 299             $received_from .= " (proxying for $HTTP_X_FORWARDED_FOR)";
 300         }
 301
 302         $header  = "Received: from $received_from\r\n";
 303         $header .= "        (SquirrelMail authenticated user $username)\r\n";
 304         $header .= "        by $SERVER_NAME with HTTP;\r\n";
 305         $header .= "        $date\r\n";
 306
 307         /* Insert the rest of the header fields */
 308         $header .= "Message-ID: $message_id\r\n";
 309         $header .= "Date: $date\r\n";
 310         $header .= "Subject: $subject\r\n";
 311         $header .= "From: $from\r\n";
 312         $header .= "To: $to_list\r\n";    // Who it's TO
 313
 314         if (isset($more_headers["Content-Type"])) {
 315             $contentType = $more_headers["Content-Type"];
 316             unset($more_headers["Content-Type"]);
 317         }
 318         else {
 319             if (isMultipart($session)) {
 320                 $contentType = "multipart/mixed;";
 321             }
 322             else {
 323                 if ($default_charset != '') {
 324                     $contentType = 'text/plain; charset='.$default_charset;
 325                 }
 326                 else {
 327                     $contentType = 'text/plain;';
 328                 }
 329             }
 330         }
 331
 332         /* Insert headers from the $more_headers array */
 333         if(is_array($more_headers)) {
 334             reset($more_headers);
 335             while(list($h_name, $h_val) = each($more_headers)) {
 336                 $header .= sprintf("%s: %s\r\n", $h_name, $h_val);
 337             }
 338         }
 339
 340         if ($cc_list) {
 341             $header .= "Cc: $cc_list\r\n"; // Who the CCs are
 342         }
 343
 344         if ($reply_to != '') {
 345             $header .= "Reply-To: $reply_to\r\n";
 346         }
 347
 348         if ($useSendmail) {
 349             if ($bcc_list) {
 350                 // BCCs is removed from header by sendmail
 351                 $header .= "Bcc: $bcc_list\r\n";
 352             }
 353         }
 354
 355         $header .= "X-Mailer: SquirrelMail (version $version)\r\n"; /* Identify SquirrelMail */
 356
 357         /* Do the MIME-stuff */
 358         $header .= "MIME-Version: 1.0\r\n";
 359
 360         if (isMultipart($session)) {
 361             $header .= 'Content-Type: '.$contentType.' boundary="';
 362             $header .= mimeBoundary();
 363             $header .= "\"\r\n";
 364         } else {
 365             $header .= 'Content-Type: '.$contentType."\r\n";
 366             $header .= "Content-Transfer-Encoding: 8bit\r\n";
 367         }
 368         $header .= "\r\n"; // One blank line to separate header and body
 369
 370         $headerlength = strlen($header);
 371     }
 372
 373     /* Write the header */
 374     fputs ($fp, $header);
 375
 376     return $headerlength;
 377 }
 378
 379 /* Send the body
 380  */
 381 function writeBody ($fp, $passedBody, $session) {
 382     global $default_charset;
 383
 384     $attachmentlength = 0;
 385
 386     if (isMultipart($session)) {
 387         $body = '--'.mimeBoundary()."\r\n";
 388
 389         if ($default_charset != "") {
 390             $body .= "Content-Type: text/plain; charset=$default_charset\r\n";
 391         }
 392         else {
 393             $body .= "Content-Type: text/plain\r\n";
 394         }
 395
 396         $body .= "Content-Transfer-Encoding: 8bit\r\n\r\n";
 397         $body .= $passedBody . "\r\n\r\n";
 398         fputs ($fp, $body);
 399
 400         $attachmentlength = attachFiles($fp, $session);
 401
 402         if (!isset($postbody)) {
 403             $postbody = "";
 404         }
 405         $postbody .= "\r\n--".mimeBoundary()."--\r\n\r\n";
 406         fputs ($fp, $postbody);
 407     } else {
 408         $body = $passedBody . "\r\n";
 409         fputs ($fp, $body);
 410         $postbody = "\r\n";
 411         fputs ($fp, $postbody);
 412     }
 413
 414     return (strlen($body) + strlen($postbody) + $attachmentlength);
 415 }
 416
 417 /* Send mail using the sendmail command
 418  */
 419 function sendSendmail($t, $c, $b, $subject, $body, $more_headers, $session) {
 420     global $sendmail_path, $popuser, $username, $domain;
 421
 422     /* Build envelope sender address. Make sure it doesn't contain
 423      * spaces or other "weird" chars that would allow a user to
 424      * exploit the shell/pipe it is used in.
 425      */
 426     $envelopefrom = "$popuser@$domain";
 427     $envelopefrom = ereg_replace("[[:blank:]]",'', $envelopefrom);
 428     $envelopefrom = ereg_replace("[[:space:]]",'', $envelopefrom);
 429     $envelopefrom = ereg_replace("[[:cntrl:]]",'', $envelopefrom);
 430
 431     /* open pipe to sendmail or qmail-inject (qmail-inject doesn't accept -t param) */
 432     if (strstr($sendmail_path, "qmail-inject")) {
 433         $fp = popen (escapeshellcmd("$sendmail_path -f$envelopefrom"), "w");
 434     } else {
 435         $fp = popen (escapeshellcmd("$sendmail_path -t -f$envelopefrom"), "w");
 436     }
 437
 438     $headerlength = write822Header ($fp, $t, $c, $b, $subject, $more_headers, $session);
 439     $bodylength = writeBody($fp, $body, $session);
 440
 441     pclose($fp);
 442
 443     return ($headerlength + $bodylength);
 444 }
 445
 446 function smtpReadData($smtpConnection) {
 447     $read = fgets($smtpConnection, 1024);
 448     $counter = 0;
 449     while ($read) {
 450         echo $read . '<BR>';
 451         $data[$counter] = $read;
 452         $read = fgets($smtpConnection, 1024);
 453         $counter++;
 454     }
 455 }
 456
 457 function sendSMTP($t, $c, $b, $subject, $body, $more_headers, $session) {
 458     global $username, $popuser, $domain, $version, $smtpServerAddress,
 459         $smtpPort, $data_dir, $color, $use_authenticated_smtp, $identity,
 460         $key, $onetimepad;
 461
 462     $to = expandRcptAddrs(parseAddrs($t));
 463     $cc = expandRcptAddrs(parseAddrs($c));
 464     $bcc = expandRcptAddrs(parseAddrs($b));
 465     if (isset($identity) && $identity != 'default') {
 466         $from_addr = getPref($data_dir, $username, 'email_address' . $identity);
 467     }
 468     else {
 469         $from_addr = getPref($data_dir, $username, 'email_address');
 470     }
 471
 472     if (!$from_addr) {
 473         $from_addr = "$popuser@$domain";
 474     }
 475
 476     $smtpConnection = fsockopen($smtpServerAddress, $smtpPort, $errorNumber, $errorString);
 477     if (!$smtpConnection) {
 478         echo 'Error connecting to SMTP Server.<br>';
 479         echo "$errorNumber : $errorString<br>";
 480         exit;
 481     }
 482     $tmp = fgets($smtpConnection, 1024);
 483     if (errorCheck($tmp, $smtpConnection)!=5) {
 484         return(0);
 485     }
 486
 487     $to_list = getLineOfAddrs($to);
 488     $cc_list = getLineOfAddrs($cc);
 489
 490     /* Lets introduce ourselves */
 491     if (! isset ($use_authenticated_smtp) || $use_authenticated_smtp == false) {
 492         fputs($smtpConnection, "HELO $domain\r\n");
 493         $tmp = fgets($smtpConnection, 1024);
 494         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 495     } else {
 496         fputs($smtpConnection, "EHLO $domain\r\n");
 497         $tmp = fgets($smtpConnection, 1024);
 498         if (errorCheck($tmp, $smtpConnection)!=5) return(0);
 499
 500         fputs($smtpConnection, "AUTH LOGIN\r\n");
 501         $tmp = fgets($smtpConnection, 1024);
 502         if (errorCheck($tmp, $smtpConnection)!=5) {
 503             return(0);
 504         }
 505
 506         fputs($smtpConnection, base64_encode ($username) . "\r\n");
 507         $tmp = fgets($smtpConnection, 1024);
 508         if (errorCheck($tmp, $smtpConnection)!=5) {
 509             return(0);
 510         }
 511
 512         fputs($smtpConnection, base64_encode (OneTimePadDecrypt($key, $onetimepad)) . "\r\n");
 513         $tmp = fgets($smtpConnection, 1024);
 514         if (errorCheck($tmp, $smtpConnection)!=5) {
 515             return(0);
 516         }
 517     }
 518
 519     /* Ok, who is sending the message? */
 520     fputs($smtpConnection, "MAIL FROM: <$from_addr>\r\n");
 521     $tmp = fgets($smtpConnection, 1024);
 522     if (errorCheck($tmp, $smtpConnection)!=5) {
 523         return(0);
 524     }
 525
 526     /* send who the recipients are */
 527     for ($i = 0; $i < count($to); $i++) {
 528         fputs($smtpConnection, "RCPT TO: $to[$i]\r\n");
 529         $tmp = fgets($smtpConnection, 1024);
 530         if (errorCheck($tmp, $smtpConnection)!=5) {
 531             return(0);
 532         }
 533     }
 534     for ($i = 0; $i < count($cc); $i++) {
 535         fputs($smtpConnection, "RCPT TO: $cc[$i]\r\n");
 536         $tmp = fgets($smtpConnection, 1024);
 537         if (errorCheck($tmp, $smtpConnection)!=5) {
 538             return(0);
 539         }
 540     }
 541     for ($i = 0; $i < count($bcc); $i++) {
 542         fputs($smtpConnection, "RCPT TO: $bcc[$i]\r\n");
 543         $tmp = fgets($smtpConnection, 1024);
 544         if (errorCheck($tmp, $smtpConnection)!=5) {
 545             return(0);
 546         }
 547     }
 548
 549     /* Lets start sending the actual message */
 550     fputs($smtpConnection, "DATA\r\n");
 551     $tmp = fgets($smtpConnection, 1024);
 552     if (errorCheck($tmp, $smtpConnection)!=5) {
 553         return(0);
 554     }
 555
 556     /* Send the message */
 557     $headerlength = write822Header ($smtpConnection, $t, $c, $b, $subject, $more_headers, $session);
 558     $bodylength = writeBody($smtpConnection, $body, $session);
 559
 560     fputs($smtpConnection, ".\r\n"); /* end the DATA part */
 561     $tmp = fgets($smtpConnection, 1024);
 562     $num = errorCheck($tmp, $smtpConnection, true);
 563     if ($num != 250) {
 564         return(0);
 565     }
 566
 567     fputs($smtpConnection, "QUIT\r\n"); /* log off */
 568
 569     fclose($smtpConnection);
 570
 571     return ($headerlength + $bodylength);
 572 }
 573
 574
 575 function errorCheck($line, $smtpConnection, $verbose = false) {
 576     global $color, $compose_new_win;
 577
 578     /* Read new lines on a multiline response */
 579     $lines = $line;
 580     while(ereg("^[0-9]+-", $line)) {
 581         $line = fgets($smtpConnection, 1024);
 582         $lines .= $line;
 583     }
 584
 585     /* Status:  0 = fatal
 586      *          5 = ok
 587      */
 588     $err_num = substr($line, 0, strpos($line, " "));
 589     switch ($err_num) {
 590     case 500:   $message = 'Syntax error; command not recognized';
 591         $status = 0;
 592         break;
 593     case 501:   $message = 'Syntax error in parameters or arguments';
 594         $status = 0;
 595         break;
 596     case 502:   $message = 'Command not implemented';
 597         $status = 0;
 598         break;
 599     case 503:   $message = 'Bad sequence of commands';
 600         $status = 0;
 601         break;
 602     case 504:   $message = 'Command parameter not implemented';
 603         $status = 0;
 604         break;
 605
 606     case 211:   $message = 'System status, or system help reply';
 607         $status = 5;
 608         break;
 609     case 214:   $message = 'Help message';
 610         $status = 5;
 611         break;
 612
 613     case 220:   $message = 'Service ready';
 614         $status = 5;
 615         break;
 616     case 221:   $message = 'Service closing transmission channel';
 617         $status = 5;
 618         break;
 619
 620     case 421:   $message = 'Service not available, closing chanel';
 621         $status = 0;
 622         break;
 623
 624     case 235:   return(5);
 625         break;
 626     case 250:   $message = 'Requested mail action okay, completed';
 627         $status = 5;
 628         break;
 629     case 251:   $message = 'User not local; will forward';
 630         $status = 5;
 631         break;
 632     case 334:   return(5); break;
 633     case 450:   $message = 'Requested mail action not taken:  mailbox unavailable';
 634         $status = 0;
 635         break;
 636     case 550:   $message = 'Requested action not taken:  mailbox unavailable';
 637         $status = 0;
 638         break;
 639     case 451:   $message = 'Requested action aborted:  error in processing';
 640         $status = 0;
 641         break;
 642     case 551:   $message = 'User not local; please try forwarding';
 643         $status = 0;
 644         break;
 645     case 452:   $message = 'Requested action not taken:  insufficient system storage';
 646         $status = 0;
 647         break;
 648     case 552:   $message = 'Requested mail action aborted:  exceeding storage allocation';
 649         $status = 0;
 650         break;
 651     case 553:   $message = 'Requested action not taken: mailbox name not allowed';
 652         $status = 0;
 653         break;
 654     case 354:   $message = 'Start mail input; end with .';
 655         $status = 5;
 656         break;
 657     case 554:   $message = 'Transaction failed';
 658         $status = 0;
 659         break;
 660     default:    $message = 'Unknown response: '. nl2br(htmlspecialchars($lines));
 661         $status = 0;
 662         $error_num = '001';
 663         break;
 664     }
 665
 666     if ($status == 0) {
 667         include_once('../functions/page_header.php');
 668         if ($compose_new_win == '1') {
 669             compose_Header($color, 'None');
 670         }
 671         else {
 672             displayPageHeader($color, 'None');
 673         }
 674         include_once('../functions/display_messages.php');
 675         $lines = nl2br(htmlspecialchars($lines));
 676         $msg  = $message . "<br>\nServer replied: $lines";
 677         plain_error_message($msg, $color);
 678     }
 679     if (! $verbose) return $status;
 680     return $err_num;
 681 }
 682
 683 function sendMessage($t, $c, $b, $subject, $body, $reply_id, $MDN, $prio = 3, $session) {
 684     global $useSendmail, $msg_id, $is_reply, $mailbox, $onetimepad,
 685            $data_dir, $username, $domain, $key, $version, $sent_folder, $imapServerAddress,
 686            $imapPort, $default_use_priority, $more_headers, $request_mdn, $request_dr;
 687
 688     $more_headers = Array();
 689
 690     do_hook('smtp_send');
 691
 692     $imap_stream = sqimap_login($username, $key, $imapServerAddress, $imapPort, 1);
 693
 694     if (isset($reply_id) && $reply_id) {
 695         sqimap_mailbox_select ($imap_stream, $mailbox);
 696         sqimap_messages_flag ($imap_stream, $reply_id, $reply_id, 'Answered');
 697
 698         /* Insert In-Reply-To and References headers if the
 699          * message-id of the message we reply to is set (longer than "<>")
 700          * The References header should really be the old Referenced header
 701          * with the message ID appended, but it can be only the message ID too.
 702          */
 703         $hdr = sqimap_get_small_header ($imap_stream, $reply_id, false);
 704         if(strlen($hdr->message_id) > 2) {
 705             $more_headers['In-Reply-To'] = $hdr->message_id;
 706             $more_headers['References']  = $hdr->message_id;
 707         }
 708     }
 709     if ($default_use_priority) {
 710         $more_headers = array_merge($more_headers, createPriorityHeaders($prio));
 711     }
 712
 713     $requestRecipt = 0;
 714     if (isset($request_dr)) {
 715         $requestRecipt += 1;
 716     }
 717     if (isset($request_mdn)) {
 718         $requestRecipt += 2;
 719     }
 720     if ( $requestRecipt > 0) {
 721         $more_headers = array_merge($more_headers, createReceiptHeaders($requestRecipt));
 722     }
 723
 724     /* In order to remove the problem of users not able to create
 725      * messages with "." on a blank line, RFC821 has made provision
 726      * in section 4.5.2 (Transparency).
 727      */
 728     $body = ereg_replace("\n\\.", "\n..", $body);
 729     $body = ereg_replace("^\\.", "..", $body);
 730
 731     /* this is to catch all plain \n instances and
 732      * replace them with \r\n.  All newlines were converted
 733      * into just \n inside the compose.php file.
 734      */
 735     $body = ereg_replace("\n", "\r\n", $body);
 736
 737     if ($MDN) {
 738         $more_headers["Content-Type"] = "multipart/report; ".
 739             "report-type=disposition-notification;";
 740     }
 741
 742     if ($useSendmail) {
 743         $length = sendSendmail($t, $c, $b, $subject, $body,  $more_headers, $session);
 744     } else {
 745         $length = sendSMTP($t, $c, $b, $subject, $body, $more_headers, $session);
 746     }
 747     if (sqimap_mailbox_exists ($imap_stream, $sent_folder)) {
 748         sqimap_append ($imap_stream, $sent_folder, $length);
 749         write822Header ($imap_stream, $t, $c, $b, $subject, $more_headers, $session);
 750         writeBody ($imap_stream, $body, $session);
 751         sqimap_append_done ($imap_stream);
 752     }
 753     sqimap_logout($imap_stream);
 754     /* Delete the files uploaded for attaching (if any).
 755      * only if $length != 0 (if there was no error)
 756      */
 757     if ($length) {
 758         ClearAttachments($session);
 759     }
 760
 761     return $length;
 762 }
 763
 764 function createPriorityHeaders($prio) {
 765     $prio_headers = Array();
 766     $prio_headers['X-Priority'] = $prio;
 767
 768     switch($prio) {
 769     case 1: $prio_headers['Importance'] = 'High';
 770         $prio_headers['X-MSMail-Priority'] = 'High';
 771         break;
 772
 773     case 3: $prio_headers['Importance'] = 'Normal';
 774         $prio_headers['X-MSMail-Priority'] = 'Normal';
 775         break;
 776
 777     case 5:
 778         $prio_headers['Importance'] = 'Low';
 779         $prio_headers['X-MSMail-Priority'] = 'Low';
 780         break;
 781     }
 782     return  $prio_headers;
 783 }
 784
 785 function createReceiptHeaders($receipt) {
 786
 787     GLOBAL $data_dir, $username;
 788
 789     $receipt_headers = Array();
 790     $from_addr = getPref($data_dir, $username, 'email_address');
 791     $from = getPref($data_dir, $username, 'full_name');
 792
 793     if ($from == '') {
 794         $from = "<$from_addr>";
 795     }
 796     else {
 797         $from = '"' . encodeHeader($from) . "\" <$from_addr>";
 798     }
 799
 800     /* On Delivery */
 801     if ( $receipt == 1
 802         || $receipt == 3 ) {
 803         $receipt_headers["Return-Receipt-To"] = $from;
 804     }
 805     /* On Read */
 806     if ($receipt == 2
 807         || $receipt == 3 ) {
 808         /* Pegasus Mail */
 809         $receipt_headers["X-Confirm-Reading-To"] = $from;
 810         /* RFC 2298 */
 811         $receipt_headers["Disposition-Notification-To"] = $from;
 812     }
 813     return $receipt_headers;
 814 }
 815
 816
 817 ?>